The present invention relates to a strip coupling tenon forming machine and particularly to a strip coupling tenon forming machine for cutting strips.
Strips may include native woods, compound materials (regenerated woods), high polymers (plastics), metals and the like. Among them, woods are regenerating natural resources, thus are well-accepted environment-friendly materials, and widely used to make various types of products, such as furniture, artifacts, hand tools and the like. Woods also can be directly used as building materials to form beams, posts and light partitions and the like.
Tree is a natural growing material with the appearance looked like a cylindrical post. But each tree has a different shape and dimension, therefore has to be cut and sliced to form usable wood. In general, the price of same kind of wood increases exponentially with increasing dimensions. Namely, the wood of a larger dimension is priced much greater than that of a smaller dimension.
Therefore in order to increase the utilization value of wood the peripheral and remanent woods left after a tree is cut and sliced are generally being spliced to form usable woods. In addition, in order to meet use requirements woods of normal dimensions also can be spliced to form woods of a greater dimension. On high polymers (plastics) and metal strips, they usually have to be cut according to the length required before being used to meet use requirements. Recycling of the high polymers and metal strips through traditional melting process consumes a lot of energy, hence another approach of coupling and cutting them for reuse also is a desirable recycling practice.
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Moreover, during forming the coupling tenons 3 on the two end surfaces of the wooden strips 2a, 2b and 2c, in order to make the coupling tenons 3 to match each other and couple in pair, their shapes must be formed with an elevation difference. Hence during fabrication of the coupling tenons 3 the elevation of the wooden strips 2a, 2b and 2c, or the sawteeth cutting device has to be adjusted manually to make the coupling tenons 3 formed at the end surfaces at two sides of the wooden strips 2a, 2b and 2c to match each other.
The aforesaid conventional fabrication practice is slow and difficult to do, operation errors easily take place that could result in non-matching of the coupling tenons 3 at the two end surfaces. Doing the process anew often is needed, hence cannot meet use requirements.
The primary object of the present invention is to disclose a strip coupling tenon forming machine that can automatically change cutting elevation to meet fabrication requirements.
The strip coupling tenon forming machine according to the invention aims to cut a plurality of strips. It comprises a station, a plane cutting device, a sawteeth cutting device and a movement deck. The station has a working plane. The plane cutting device is mounted onto the working plane and has a plane cutter. The sawteeth cutting device is mounted onto the working plane and has a sawteeth cutter.
The movement deck is located on the station and has a holding deck to hold a plurality of the strips, a leaning panel located at one side of the holding deck, a clamp panel movable close to the leaning panel to clamp the strips, a slide element to carry and slide the holding deck, and a rotary element to carry and swivel the holding deck. The rotary element has a holding bar anchored on the station and a rotary bar to support the holding deck and screw into the holding bar. The rotary bar changes the elevation of the holding deck while the holding deck is swiveled. The rotary element makes two ends surfaces of the strips to move close to or away from the working plane through swiveling. The slide element makes the two end surfaces of the strips to pass through respectively the plane cutter and the tool cutter so that the two end surfaces have respectively a coupling tenon formed thereon.
Thus, through the mechanism design of swiveling the holding deck that also changes the elevation thereof at the same time, while the end surfaces at two sides of the strips are passing through the plane cutter of the plane cutting device and the sawteeth cutter of the sawteeth cutting device, the coupling tenons that are matched at varying elevations can be formed on the end surfaces so that the coupling tenons of the strips can be coupled together in a serial fashion. Such a technique can reduce rework caused by mismatching of the elevation and increase fabrication speed, and can be adopted to cut strips made of the native woods, compound materials (regenerating woods), high polymers (plastics), metals and the like to meet fabrication requirements.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed embodiments and description, which proceed with reference to the accompanying drawings. The embodiments merely serve for illustrative purpose and are not the limitation of the invention.
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The invention comprises a station 20, a plane cutting device 30, a sawteeth cutting device 40 and a movement deck 50, and can be collaborated with a gluing device 60, a press device 70 and a thrust device 80 to couple the strips 10 together.
The station 20 has a working plane 21. The plane cutting device 30 is mounted onto the working plane 21 and has a plane cutter 31. The sawteeth cutting device 40 is mounted onto the working plane 21 and has a sawteeth cutter 41.
The movement deck 50 is located on the station 20 and has a holding deck 51 to hold the strips 10, a leaning panel 52 located at one side of the holding deck 51, a clamp panel 55 movable close to the leaning panel 52 to clamp the strips 10, a slide element 53 to carry and slide the holding deck 51, and a rotary element 54 to carry the holding deck 51 to swivel 180 degrees. The slide element 53 can have a directing member 531 anchored on the station 20 and a slide base 532 to carry the holding deck 51 and the rotary element 54.
The clamp panel 55 can include two clamp portions 551 screwed through respectively by a clamp screw bar 522. The two clamp screw bars 522 are connected respectively to a rotary wheel 523. Through rotation of the rotary wheels 523 the two clamp portions 551 are driven to move close to the stationary leaning panel 52 to clamp the strips 10.
The holding deck 51 can have a press member 521 located above the strips 10. The press member 521 is anchored on the holding deck 51 and includes a press plate 524 to press and hold the strips 10 still.
The working plane 21 can have a positioning plate 22 to be pressed by the strips 10 to trim the end surfaces at two sides of the strips 10 to pass through respectively where the plane cutter 31 and the sawteeth cutter 41 are located, and after the positioning is finished the strips 10 are clamped tightly by the clamp panels 55 for positioning.
The strips 10 are located on the holding deck 51 with the end surfaces jutting outside the holding deck 51, and through sliding of the slide element 53 and swiveling of the rotary element 54, the two end surfaces at two sides of the strips 10 can pass through respectively the plane cutter 31 and the sawteeth cutter 41 to form respectively a coupling tenon 12 thereon. It is to be noted that after the rotary element 54 has swiveled the two end surfaces at two sides of the strips 10 have to be trimmed again through the positioning plate 22 to pass through the plane cutter 31 and the sawteeth cutter 41. In the event that no rotary element 54 is provided, the strips 10 can be swiveled manually to form the coupling tenons 12 on the end surfaces at two sides of the strips 10.
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The gluing device 60 is mounted onto the working plane 21 and has a glue box 61 which is got into by the coupling tenons 12 of the strips 10. The glue box 61 contains a glue 62 to daub on the coupling tenons 12. The glue box 61 also can include a serrated glue dispensing wheel 63 inside corresponding to the coupling tenons 12 so that even small crevices of the coupling tenons 12 can be daubed with the glue.
The press device 70 is mounted onto the working plane 21 and includes a press plate 71 movable up and down to press the strips 10 at a definite pressure to generate a static friction force between the strips 10 and the working plane 21. The press device 70 can include a pylon 72 which has a revolving wheel 73 and a pylon screw bar 74. The pylon screw bar 74 screws through the pylon 72 and has a distal end fastened to the press plate 71. By rotating the revolving wheel 73 the elevation of the press plate 71 can be changed to hold the strips 10 to avoid the strips 10 from rotating or skewing in the downstream fabrication processes.
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In addition, the plane cutting device 30 and the sawteeth cutting device 40 can be positioned on the same side of the working plane 21, while the thrust device 80 and the press device 70 on another side of the working plane 21 so that the plane cutting device 30, the sawteeth cutting device 40, the thrust device 80 and the press device 70 surround the working plane 21, namely, the equipment required to press and couple the coupling tenons 12 are surrounding the working plane 21 and located on the same station 20.
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As a conclusion, the invention can provide many advantages, notably:
1. With the rotary bar screwed into the holding bar the elevation of the holding deck can be changed while it is swiveling for 180 degrees so that the coupling tenons on the two end surfaces of the strips can be staggered up and down for a selected distance to form desired coupling.
2. Through the approach of automatic change of elevation human operation errors can be eliminated, and rework can be reduced, hence fabrication cost decreases.
3. Through the press member the strips can be pressed effectively to avoid loosening of the strips and improve production yield.
4. Through the positioning plate the end surfaces of the strips can be trimmed neatly and quickly.