Conveying and cutting machine for spliced carpet without scrap edge on end face

Abstract

The utility model discloses a spliced carpet conveying and cutting machine without scrap edges on an end face, which is characterized in that a rigid feeding flat plate which is flush with the height of a table top of the cutting machine is fixed on a feeding rack, and a front fixed pressure rod and a rear fixed pressure rod which are used for pressing or loosening a fed wide strip-shaped carpet on the feeding flat plate are respectively fixed on the front and the rear of the feeding flat plate. The left and right ends of the front and rear fixed pressure rods are respectively provided with fixed pressure rod cylinders for controlling the lifting of the front and rear fixed pressure rods; feeding guide rails are respectively fixed on the left side and the right side of the feeding flat plate between the front fixed pressure rod and the rear fixed pressure rod, a movable pressure rod device for clamping the wide strip-shaped carpet to move is arranged on the feeding guide rails, the movable pressure rod device is driven by two parallel ball screw transmission mechanisms with three threads, and the transmission mechanisms are controlled by a servo motor; a photoelectric sensor is arranged on a cutting table surface or the front cutting edge of the cutting machine close to the two sides of the front cutting edge; and the photoelectric sensor accurately controls the forward feeding length of the servo motor.

Description

Technical Field

[0001] This utility model relates to production equipment for modular carpets, and more particularly to a modular carpet conveying and cutting machine with no waste edge material on the end face in the production of modular carpets. Background Technology

[0002] In manufacturing modular carpets, a wide-width non-woven fabric is typically used as the base. A tufting machine, using needles, inserts yarns into the base fabric, creating a tufted carpet surface with varying pile heights or cut pile. The carpet surface is automatically rolled into a cylindrical blank. A backing adhesive is then applied to the back of the tufted carpet using a backing adhesive machine to strengthen the bond between the pile roots and the base fabric, preventing pile shedding. The pre-coated blank carpet is then laminated or cured with different materials (commonly known as backing) to form a wide strip carpet. This strip carpet is then fed into a cutting machine via a conveyor system, where it is cut into square, rectangular, or polygonal modular carpet pieces according to customer requirements. During the feeding process, transmission errors caused by gaps in the various transmission mechanisms often result in variations in the actual length of carpet fed into the cutting machine each time. If too much is fed (too long), excessive waste material is generated at the front end, leading to waste. If too little is fed (too short), the carpet at the front end will not reach the specified length, resulting in defective products. To ensure the cutting quality of patchwork carpets, the current method involves feeding the carpet 3-8 millimeters further forward with the feeding device to compensate for errors in the feeding mechanism. Therefore, each cut produces approximately 3-8 millimeters of waste edge material, accounting for about 1-1.5% of the total carpet weight, resulting in significant waste. This waste edge material does not decompose naturally in a short time and is typically disposed of by qualified environmental companies through landfill, causing environmental harm, occupying limited land, and increasing costs for carpet manufacturers. Based on our company's current annual production of 3.2 million square meters of patchwork carpets, this generates nearly 100 tons of waste edge material annually, resulting in economic losses of hundreds of thousands of yuan. Designing a precise carpet feeding and cutting device that eliminates excess waste edge material at the front of the carpet during cutting, completely resolving waste caused by feeding errors, and reducing pollution would be a significant contribution to both businesses and society. Utility Model Content

[0003] To achieve the above requirements, the present invention provides a piece-type carpet conveying and cutting machine with no waste edge material on the end face, which is implemented through the following technical solution: It includes a cutting machine for cutting a wide strip of carpet into pieces, and a feeding frame is connected to the rear end of the cutting machine. The characteristic feature is that a rigid feeding plate, flush with the height of the cutting machine table, is fixed on the feeding frame. Front and rear pressure rods, respectively, are fixed at the front and rear of the feeding plate to press or release the wide strip of carpet. Pressure rod cylinders are respectively provided at the left and right ends of the front and rear pressure rods to control their lifting and lowering. Feeding guide rails are fixed on both sides of the feeding plate. A dynamic pressure rod device is installed on the feeding guide rail to clamp and move the wide strip carpet. The dynamic pressure rod device is driven by two parallel three-threaded ball screw transmission mechanisms. The transmission mechanism is controlled by a servo motor, which controls the forward and backward movement of the dynamic pressure rod device. Photoelectric sensors are installed on the cutting table or on the front blade of the cutting machine, which is located close to both sides of the front blade. When the wide strip carpet moves to be aligned with the front blade, the photoelectric sensor sends a command to the servo motor. The servo motor immediately stops and brakes, stopping the forward feeding of carpet. The cutting machine then begins to cut the wide strip carpet into patchwork carpets.

[0004] The described dynamic pressure rod device includes a guide rail seat that matches the feeding guide rail, a dynamic pressure rod connecting seat connected to the guide rail seat, a dynamic pressure rod cylinder fixed on the lower surface of the dynamic pressure rod connecting seat, a piston rod of the dynamic pressure rod cylinder connected to the dynamic upper pressure rod through a dynamic pressure rod lifting rod, a dynamic lower pressure rod fixed on the dynamic pressure rod connecting seat, a wide strip of carpet between the dynamic upper pressure rod and the dynamic lower pressure rod, and the dynamic lower pressure rod connected to a ball screw nut on a screw drive mechanism.

[0005] The cutting machine and the feeding machine frame are connected together from top to bottom by bolts and connecting rods or connecting plates, forming a rigid connection.

[0006] The front of the cutting machine is connected to a workbench for receiving cut carpet pieces, which is also used for product inspection.

[0007] Based on the above design, a piece-type carpet conveying and cutting machine with zero edge waste is designed. When the carpet reaches the front blade, a photoelectric sensor sends a command to the servo motor, which immediately stops rotating and feeds the carpet forward, ensuring the accuracy of the carpet length. Typically, the transmission accuracy of the servo motor and ball screw nut can reach approximately 0.02 mm, which is perfectly adequate for carpet cutting precision. The photoelectric sensor sends a stop brake command to the servo motor, ensuring that the cutting machine can cut the carpet without leaving any edge waste at the front end. Two three-headed ball screws on both sides of the conveying device ensure transmission accuracy and achieve high carpet feeding speed. Two parallel ball screws synchronously drive the feeding mechanism, preventing lateral or forward / backward tilting during carpet conveying. Furthermore, the cutting machine and the feeding frame are rigidly connected, effectively controlling transmission errors caused by vibrations between the cutting machine and the feeding frame. Through multi-stage control, precise cutting with no waste material at the front end of the carpet is achieved, i.e., "zero" waste. This improves carpet utilization, saves the cost of landfilling waste materials and the occupation of limited land, completely solves the environmental problems caused by waste generated during the production of modular carpets, reduces the cost of producing modular carpets, and brings certain economic benefits to enterprises. The entire conveying and cutting process of strip carpets is fully automated, improving production efficiency. Attached Figure Description

[0008] Figure 1 This is a front view of a carpet cutting and conveying machine that produces no waste edge material on the end face.

[0009] Figure 2 yes Figure 1 Top view;

[0010] Figure 3 yes Figure 1 The right view;

[0011] Figure 4 yes Figure 1 A three-dimensional image;

[0012] Figure 5 yes Figure 1 Enlarged cross-section of AA after the introduction of wide strip carpet;

[0013] Figure 6 yes Figure 5 A magnified view of a portion of region F in the middle;

[0014] Figure 7 yes Figure 1 Enlarged cross-section of BB after the introduction of wide strip carpet;

[0015] Figure 8 yes Figure 7 A magnified view of a portion of region E in the middle.

[0016] In the diagram: 1. Wide strip carpet; 2. Cutting machine; 3. Feeder frame; 4. Feeding plate; 5. Front fixed pressure bar; 6. Rear fixed pressure bar; 7. Fixed pressure bar connecting rod; 8. Fixed pressure bar cylinder; 9. Feeding guide rail; 10. Moving pressure bar device; 11. Screw drive mechanism; 12. Servo motor; 13. Front cutting blade; 14. Cutting table; 15. Photoelectric sensor; 16. Guide rail seat; 17. Moving pressure bar connecting seat; 18. Moving pressure bar cylinder; 19. Piston rod; 20. Moving pressure bar lifting rod; 21. Moving upper pressure bar; 22. Moving pressure bar seat; 23. Moving lower pressure bar; 24. Bolt; 25. Connecting rod or connecting plate; 26. Workbench. Detailed Implementation

[0017] The present invention will be further described below through embodiments.

[0018] Figures 1 to 8 This is a schematic diagram of a carpet cutting machine with no waste edge material at the end face. As shown in the diagram, it includes a cutting machine 2 that cuts a wide strip carpet 1 into pieces of carpet. A feeding frame 3 is connected to the rear end of the cutting machine 2. A rigid feeding plate 4, which is flush with the table of the cutting machine 2, is fixed on the feeding frame 3. A front pressure rod 5 and a rear pressure rod 6 are fixed to the front and rear of the feeding plate 4, respectively, to press or release the wide strip carpet 1 on the feeding plate 4. Pressure rod connecting rods 7 are connected to the left and right ends of the front pressure rod 5 and the rear pressure rod 6, respectively. The pressure rod connecting rods 7 are connected to the pressure rod cylinders 8 that control the lifting and lowering of the front pressure rod 5 and the rear pressure rod 6. Feeding guide rails 9 are fixed on the left and right sides of the feeding plate 4 between the front fixed pressure rod 5 and the rear fixed pressure rod 6. A moving pressure rod device 10 is provided on the feeding guide rail 9 to clamp and move the wide strip carpet 1. The moving pressure rod device 10 is driven by two parallel three-threaded ball screw transmission mechanisms 11. The ball screw transmission mechanism 11 is controlled by a servo motor 12. The servo motor 12 controls the moving pressure rod device 10 to move back and forth. Photoelectric sensors 15 are provided on the cutting table 14 or the front blade 13 of the cutting machine 2, which is close to both sides of the front blade 13. When the wide strip carpet 1 moves to align with the front blade 13, the photoelectric sensor 15 sends a command to the servo motor 12. The servo motor 12 immediately stops and brakes, stops feeding the carpet forward, and the cutting machine 2 begins to cut the wide strip carpet 1 into patchwork carpet. The described dynamic pressure rod device 10 includes a guide rail seat 16 that matches the feeding guide rail 9. A dynamic pressure rod connecting seat 17 is connected to the guide rail seat 16. A dynamic pressure rod cylinder 18 is fixed on the lower surface of the dynamic pressure rod connecting seat 17. The piston rod 19 of the dynamic pressure rod cylinder 18 is connected to the dynamic upper pressure rod 21 through a dynamic pressure rod lifting rod 20. A dynamic lower pressure rod 23 is fixed on a frame-shaped dynamic pressure rod seat 22. A wide strip of carpet 1 is located between the dynamic upper pressure rod 21 and the dynamic lower pressure rod 23. The dynamic lower pressure rod 23 is connected to a ball screw nut 24 on a screw drive mechanism 11. During feeding, the dynamic upper pressure rod 21 is pressed down under the drive of the dynamic pressure rod cylinder 18, such as... Figure 6 As indicated by the middle arrow and the function of the moving pressure rod 23, the wide strip of carpet 1 is clamped. At this time, the pressure rod cylinders 8 on the front pressure rod 5 and the rear pressure rod 6 are released, and the servo motor 12 drives the screw transmission mechanism 11 to push the moving pressure rod device 10 to feed the wide strip of carpet 1 into the cutting machine 2 for cutting. The photoelectric sensor 15 and the servo motor 12 precisely control the forward pushing amount. The cutting machine 2 and the feeding frame 3 are connected together vertically by bolts 24 and connecting rods or connecting plates 25 to form a rigid connection. A worktable 26 is connected in front of the cutting machine 2 to receive the cut carpet pieces, which is also used for product inspection.

Claims

1. A tapestry carpet cutting machine with no waste edge conveying, comprising a cutting machine for cutting fed wide strips of carpet into tapestry carpet pieces, and a feeding frame connected to the rear end of the cutting machine, characterized in that... A rigid feeding plate, flush with the cutting machine table, is fixed on the feeding frame. Front and rear pressure rods, respectively, are fixed to the feeding plate to press or release the wide strip of carpet. Pressure rod cylinders, controlling the raising and lowering of the pressure rods, are located at the left and right ends of the pressure rods. Feeding guide rails are fixed to the left and right sides of the feeding plate between the front and rear pressure rods. Moving pressure rod devices, which clamp and move the wide strip of carpet, are mounted on the feeding guide rails. These moving pressure rod devices are driven by two parallel three-threaded ball screws, controlled by a servo motor. Photoelectric sensors are installed on the cutting table or on the front blade, located close to both sides of the cutting machine. When the wide strip of carpet moves to align with the front blade, the photoelectric sensors send a command to the servo motor, which immediately stops and brakes, halting the forward feeding of the carpet. The cutting machine then begins to cut the wide strip of carpet into patchwork carpet pieces.

2. The end-face waste-free patchwork carpet conveying and cutting machine according to claim 1, characterized in that: The described dynamic pressure rod device includes a guide rail seat that matches the feeding guide rail, a dynamic pressure rod connecting seat connected to the guide rail seat, a dynamic pressure rod cylinder fixed on the lower surface of the dynamic pressure rod connecting seat, a piston rod of the dynamic pressure rod cylinder connected to the dynamic upper pressure rod through a dynamic pressure rod lifting rod, a dynamic lower pressure rod fixed on the dynamic pressure rod connecting seat, a wide strip of carpet between the dynamic upper pressure rod and the dynamic lower pressure rod, and the dynamic lower pressure rod connected to a ball screw nut on a screw drive mechanism.

3. The end-face waste-free patchwork carpet conveying and cutting machine according to claim 1, characterized in that: The cutting machine and the feeding machine frame are connected together from top to bottom by bolts and connecting rods or connecting plates, forming a rigid connection.

4. The end-face waste-free patchwork carpet conveying and cutting machine according to claim 1, characterized in that: The front of the cutting machine is connected to a workbench for receiving cut carpet pieces, which is also used for product inspection.

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