Cutting and forming device for hook-and-loop fastener
By introducing an extrusion and stretching mechanism into the Velcro cutting device, the problems of skewness and unevenness during Velcro cutting are solved, ensuring the flatness of the cutting edge and the quality of the finished product.
Patent Information
- Application Number
- CN202422656590.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Because of its soft texture, Velcro can easily become skewed and rough due to external wrinkles when cut and shaped, affecting the quality of the finished product.
The extrusion mechanism and the stretching mechanism are used to limit and tension the Velcro. The Velcro is fixed by the extrusion block, and the stretching mechanism drives the T-shaped arm to stretch it to avoid sliding and wrinkling during cutting and ensure a smooth incision.
It effectively avoids the skewness and unevenness of the Velcro during cutting, and improves the quality of the finished product.
Smart Images
Figure CN223301759U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cutting and forming devices for hook and loop fasteners, in particular to a cutting and forming device for hook and loop fasteners. Background Art
[0002] Velcro, also known as hook and loop fasteners, is a widely used fastening material in various applications. It consists of two different materials: fine, soft fibers on one side and harder, hooked bristles on the other. These two materials adhere to each other, making it easy to use, durable, reusable, and adjustable.
[0003] When processing Velcro, cutting equipment is required to cut large pieces of Velcro into shape. However, Velcro has a relatively soft texture, which means that when it is directly cut into shape, the external wrinkles will cause the cut edge of the Velcro to be crooked and rough, thus affecting the quality of the finished product. Utility Model Content
[0004] (1) Technical problems solved
[0005] In response to the shortcomings of the existing technology, the utility model provides a cutting and forming device for Velcro to solve the technical problem that the Velcro has a relatively soft texture, which leads to the external wrinkles causing the cut edge of the Velcro to be crooked and rough when directly cut and formed, thus affecting the quality of the finished product of the Velcro.
[0006] (2) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cutting and forming device for Velcro, comprising: a conveying unit and a cutting unit, the cutting unit being assembled on the top of the conveying unit, the extrusion mechanism being evenly distributed on the inner top of the cutting unit, the extrusion mechanism comprising a connecting rod, the bottom of the connecting rod being connected to a cross arm through a hinge, the outside of the cross arm being connected to a trapezoidal block.
[0008] Both sides of the cutting unit are slidably connected with extrusion blocks, and a stretching mechanism is installed inside the extrusion block. The stretching mechanism includes a gear, a bidirectional screw rod is inserted into the interior of the gear, and nuts are threadedly connected on both sides of the exterior of the bidirectional screw rod. The bottom of the nut is equipped with a T-shaped arm, and the top of the gear is meshed with an L-shaped rack.
[0009] Preferably, the interior of the cutting unit is equipped with a hydraulic cutting knife, the bottom of the hydraulic cutting knife is connected to the top of the connecting rod through a hinge, and the hydraulic cutting knife and the cutting unit are combined to form a common hydraulic cutting equipment in the prior art, which is used to cut and shape the Velcro.
[0010] Preferably, guide grooves are provided on both sides of the cutting unit, and the guide grooves are slidably connected to the cross arm and the extrusion block. Track grooves matching the cross arm and the extrusion block are provided inside the guide grooves, and the track grooves cooperate with the track blocks to guide the cross arm and the extrusion block to perform linear motion.
[0011] Preferably, both ends of the top of the transmission unit are connected to assembly arms, and the top of the assembly arm is equipped with a first spring, which is connected to the extrusion block. The assembly arm can support the cutting unit and, at the same time, cooperate with the first spring to drive the extrusion block to return to its position after the movement is completed, thereby releasing the limit on the Velcro.
[0012] Preferably, both ends of the top of the extrusion block are provided with transverse grooves, a slider is slidably connected inside the transverse groove, a second spring is connected between the transverse groove and the slider, and the transverse groove cooperates with the slider to guide the L-shaped rack and then perform linear motion.
[0013] Preferably, sliding blocks are provided on both sides of the extrusion block, the sliding blocks are slidably connected to the guide grooves, the interior of the extrusion block is connected to the bidirectional screw rod through bearings, and the sliding blocks can guide the extrusion block to perform linear motion.
[0014] Preferably, guide arms are inserted on both sides of the interior of the nut, and the guide arms are connected to the extrusion block. The guide arms can guide the nut to move linearly and prevent the nut from rotating during movement.
[0015] (3) Beneficial effects
[0016] Compared with the prior art, the present invention provides a cutting and forming device for hook and loop fasteners, which has the following beneficial effects:
[0017] The cutting and forming device of the Velcro tape automatically limits and fixes the Velcro tape before cutting through an added extrusion mechanism and an extrusion block, thereby preventing the Velcro tape from sliding during cutting, which would subsequently cause the cut edge to be skewed. At the same time, the added stretching mechanism automatically stretches the Velcro tape when the extrusion block limits the Velcro tape, thereby tightening the Velcro tape, thereby preventing the Velcro tape from being wrinkled during cutting, resulting in an uneven cut edge, which would reduce the quality of the finished product after the Velcro tape is cut and formed. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a front view of the utility model;
[0019] Figure 2 This is a front view of the cutting unit of the utility model;
[0020] Figure 3 This is a front view of the extrusion mechanism of the utility model;
[0021] Figure 4 This is a front view of the extrusion block of the utility model;
[0022] Figure 5 This is a front view of the stretching mechanism of the present invention.
[0023] In the figure: 1. Conveying unit; 2. Cutting unit; 21. Guide groove; 22. Assembly arm; 23. Hydraulic cutting knife; 3. Extrusion mechanism; 31. Connecting rod; 32. Cross arm; 33. Trapezoidal block; 4. Extrusion block; 41. Cross groove; 42. First spring; 43. Sliding block; 5. Stretching mechanism; 51. Gear; 52. Bidirectional screw rod; 53. Nut; 54. T-arm; 55. L-shaped rack; 56. Slider; 57. Second spring; 58. Guide arm. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] This utility model provides a technical solution, please refer to Figure 1 and Figure 2 A device for cutting and forming a hook and loop fastener comprises: a transmission unit 1 and a cutting unit 2. The transmission unit 1 is a belt transmission device commonly used in the prior art. At the same time, a support plate is installed inside the transmission unit 1 to improve the cutting effect of the cutting unit 2 on the hook and loop fastener. The cutting unit 2 is installed on the top of the transmission unit 1. A hydraulic cutting knife 23 is installed inside the cutting unit 2. The bottom of the hydraulic cutting knife 23 is connected to the top of the connecting rod 31 through a hinge. The hydraulic cutting knife 23 and the cutting unit 2 cooperate to form a hydraulic cutting device commonly used in the prior art for cutting and forming the hook and loop fastener.
[0026] See also Figure 3 The extrusion mechanism 3 is evenly distributed on the inner top of the cutting unit 2. The extrusion mechanism 3 includes a connecting rod 31. The connecting rod 31 is used to transmit the cross arm 32. The bottom of the connecting rod 31 is connected to the cross arm 32 through a hinge. The cross arm 32 is used to push the trapezoidal block 33 to move. The outside of the cross arm 32 is connected to the trapezoidal block 33.
[0027] The trapezoidal block 33 is used to drive the extrusion block 4 to descend. Guide grooves 21 are provided on both sides of the cutting unit 2. The guide grooves 21 are slidingly connected to the cross arm 32 and the extrusion block 4. Track grooves matching the cross arm 32 and the extrusion block 4 are provided inside the guide grooves 21.
[0028] The track groove cooperates with the track block to guide the cross arm 32 and the extrusion block 4 to perform linear movement. The top ends of the transmission unit 1 are connected to the assembly arm 22. The top of the assembly arm 22 is equipped with a first spring 42. The first spring 42 is connected to the extrusion block 4. The assembly arm 22 can support the cutting unit 2. At the same time, in conjunction with the first spring 42, it can drive the extrusion block 4 to return to its position after the movement is completed, thereby releasing the limit on the Velcro.
[0029] See also Figure 4 , both ends of the top of the extrusion block 4 are provided with a transverse groove 41, and a slider 56 is slidably connected inside the transverse groove 41. A second spring 57 is connected between the transverse groove 41 and the slider 56. The transverse groove 41 cooperates with the slider 56 to guide the L-shaped rack 55 and then perform linear motion. Sliding blocks 43 are provided on both sides of the extrusion block 4. The sliding block 43 is slidably connected to the guide groove 21. The interior of the extrusion block 4 is connected to the bidirectional screw rod 52 through a bearing. The sliding block 43 can guide the extrusion block 4 to perform linear motion.
[0030] See also Figure 5 Both sides of the cutting unit 2 are slidably connected with an extrusion block 4, and a stretching mechanism 5 is assembled inside the extrusion block 4. The stretching mechanism 5 includes a gear 51. The gear 51 can be transmitted through an L-shaped rack 55, and then drive the bidirectional screw rod 52 to rotate. The bidirectional screw rod 52 is inserted into the interior of the gear 51.
[0031] The bidirectional screw rod 52 is used to drive the nut 53 to move. The two sides of the outside of the bidirectional screw rod 52 are threadedly connected with nuts 53. The nut 53 is used to drive the T-shaped arm 54 to move. The bottom of the nut 53 is equipped with a T-shaped arm 54. The T-shaped arm 54 is used to fix the Velcro first and then stretch it.
[0032] An L-shaped rack 55 is meshed with the top of the gear 51, and guide arms 58 are inserted on both sides of the interior of the nut 53. The guide arms 58 are connected to the extrusion block 4. The guide arms 58 can guide the nut 53 to move linearly and prevent the nut 53 from rotating during movement.
[0033] The bottom end of the L-shaped rack 55 close to the hydraulic cutter 23 is not provided with teeth, so the hydraulic cutter 23 can only drive the T-shaped arm 54 to move a certain distance. When it moves to the maximum distance, the gear 51 is disconnected from the L-shaped rack 55, and the T-shaped arm 54 will not continue to move, avoiding pulling and damaging the Velcro.
[0034] In this solution, the hook and loop fastener is first placed on the top of the conveyor unit 1, and the conveyor unit 1 drives the hook and loop fastener to be fed. When the hook and loop fastener moves to the bottom of the cutting unit 2, the hydraulic cutter 23 is started to descend to cut the hook and loop fastener. When the hydraulic cutter 23 descends, it will first drive the connecting rod 31 to transmit, and then drive the cross arm 32 to move, and squeeze the extrusion block 4 through the trapezoidal block 33, so that the extrusion block 4 descends, and the hook and loop fastener is fixed on the top of the conveyor unit 1. When the trapezoidal block 33 continues to move, it will drive the L-shaped rack 55 to move laterally, and then drive the meshing gear 51 to rotate, drive the two-way screw rod 52 to rotate and transmit, and finally drive the two nuts 53 to move away from each other, thereby driving the T-shaped arm 54 to pull the hook and loop fastener, so that the hook and loop fastener is tensioned, and finally the hydraulic cutter 23 is completely descended to complete the cutting and forming process of the hook and loop fastener;
[0035] Before cutting, the Velcro is automatically limited and fixed by the added extrusion mechanism 3 in cooperation with the extrusion block 4 to prevent the Velcro from sliding during cutting, which would cause the cut to be skewed. At the same time, the added stretching mechanism 5 automatically stretches the Velcro when the extrusion block 4 limits the Velcro, making the Velcro tight to avoid uneven cuts due to wrinkles during cutting, which would reduce the quality of the finished product after the Velcro is cut and formed.
[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A cutting and forming device for a hook and loop fastener, comprising: A conveying unit (1) and a cutting unit (2), wherein the cutting unit (2) is assembled on the top of the conveying unit (1), and is characterized in that: an extrusion mechanism (3) is evenly distributed on the inner top of the cutting unit (2), and the extrusion mechanism (3) includes a connecting rod (31), the bottom of the connecting rod (31) is connected to a cross arm (32) through a hinge, and the outside of the cross arm (32) is connected to a trapezoidal block (33); Both sides of the cutting unit (2) are slidably connected to an extrusion block (4), the interior of the extrusion block (4) is equipped with a stretching mechanism (5), the stretching mechanism (5) comprises a gear (51), a bidirectional screw rod (52) is inserted into the interior of the gear (51), both sides of the exterior of the bidirectional screw rod (52) are threadedly connected to nuts (53), the bottom of the nut (53) is equipped with a T-shaped arm (54), and the top of the gear (51) is meshedly connected to an L-shaped rack (55).
2. The device for cutting and forming a hook and loop fastener according to claim 1, characterized in that: A hydraulic cutting knife (23) is installed inside the cutting unit (2), and the bottom of the hydraulic cutting knife (23) is connected to the top of the connecting rod (31) through a hinge.
3. The device for cutting and forming a hook and loop fastener according to claim 1, characterized in that: Guide grooves (21) are provided on both sides of the cutting unit (2), and the guide grooves (21) are slidably connected to the cross arm (32) and the extrusion block (4).
4. The device for cutting and forming a hook and loop fastener according to claim 1, wherein: Both ends of the top of the transmission unit (1) are connected to assembly arms (22), the top of the assembly arm (22) is equipped with a first spring (42), and the first spring (42) is connected to the extrusion block (4).
5. The device for cutting and forming a hook and loop fastener according to claim 1, characterized in that: Both ends of the top of the extrusion block (4) are provided with transverse grooves (41), the interior of the transverse groove (41) is slidably connected to a slider (56), and a second spring (57) is connected between the transverse groove (41) and the slider (56).
6. The device for cutting and forming a hook and loop fastener according to claim 3, characterized in that: Sliding blocks (43) are provided on both sides of the extrusion block (4), and the sliding blocks (43) are slidably connected to the guide groove (21). The interior of the extrusion block (4) is connected to the bidirectional screw rod (52) through a bearing.
7. The device for cutting and forming a hook and loop fastener according to claim 1, characterized in that: Guide arms (58) are inserted into both sides of the interior of the nut (53), and the guide arms (58) are connected to the extrusion block (4).