A trimming device for nonwoven fabric processing that enables asymmetrical trimming in the width direction

Abstract

This utility model discloses a nonwoven fabric trimming device capable of asymmetrical trimming in the width direction, relating to the field of nonwoven fabric production technology. It includes a bed frame with two protective shells slidably mounted on it. A support plate is fixedly mounted on each protective shell. A linear block and a reciprocating block are slidably mounted on the support plate. Two reciprocating rollers are rotatably mounted on the reciprocating block. The cutting line is positioned between the reciprocating rollers during operation and is used to cut the nonwoven fabric. This device adjusts the connection position of the connecting rod on the connecting slider to allow the reciprocating block to move back and forth, coordinating with the movement of the nonwoven fabric within the device. This allows the device to continuously perform regular pattern cutting, improving both the adaptability and efficiency of the cutting process.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, specifically to a nonwoven fabric processing edge trimming device that can achieve asymmetrical edge trimming in the width direction. Background Technology

[0002] Nonwoven fabrics, as a material widely used in medical, hygiene, home furnishing, and industrial fields, have increasingly stringent requirements for dimensional accuracy and edge quality during their production. In traditional nonwoven fabric processing, the edge trimming process typically uses fixed cutters or molds for symmetrical cutting. While this method can meet basic production needs, it has significant limitations when dealing with complex patterns, asymmetrical designs, or special specifications. For example, symmetrical cutting makes it difficult to achieve personalized pattern layouts in the width direction, limiting the diversity of product designs. At the same time, traditional mechanical structures are prone to decreased cutting accuracy due to vibration and wear during high-speed continuous production, affecting the finished product qualification rate.

[0003] With the increasing demand for diversified and refined nonwoven products, the industry urgently needs equipment that can flexibly adjust cutting modes, adapt to asymmetrical pattern processing, and possess high stability. In existing technologies, some improvement solutions enhance flexibility by introducing CNC systems or replacing modular cutting tools, but such equipment is often complex in structure, expensive, and requires highly skilled operators, making it difficult to popularize in small and medium-sized enterprises. In addition, during long-term operation, traditional cutting devices are prone to slack or misalignment of cutting tools, resulting in accumulated cutting errors, which further reduces production efficiency and product quality. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model proposes the following technical solution:

[0005] A nonwoven fabric trimming device capable of asymmetrical trimming in the width direction includes a bed with two protective shells slidably mounted on it. A support plate is fixedly mounted on the protective shells. The support plate has two sliding grooves and a linear block slidably mounted on it, located in one sliding groove. A reciprocating block is slidably mounted on the support plate, located in the other sliding groove. Two reciprocating rollers are rotatably mounted on the reciprocating block. The cutting line operates between the reciprocating rollers, which change the movement state of the cutting line. The cutting line cuts the nonwoven fabric. Changing the position of the reciprocating block on the support plate changes the contact position between the cutting line and the nonwoven fabric.

[0006] Furthermore, a protective shell is fixedly installed on one side of the bed, and a connecting slider is rotatably installed on the crank rod. The connecting slider is located inside the protective shell, and a connecting rod is slidably installed on the connecting slider. A crank screw is rotatably installed inside the connecting rod, and the crank screw is threadedly connected to the connecting slider. The crank screw is used to drive the connecting slider to slide on the connecting rod. One end of the connecting rod is rotatably connected to a reciprocating block. The connection between the connecting rod and the reciprocating block is secured by bolts to facilitate subsequent disassembly and replacement of the connecting rod. The connecting rod, crank rod, and reciprocating block form a crank-slider mechanism.

[0007] Furthermore, the protective shell is provided with an upper top block, a sliding block is slidably installed on the upper top block, a tensioning spring is fixedly installed inside the upper top block, the other end of the tensioning spring is fixedly installed on the upper top block, a plurality of limit wheels are rotatably installed on one side of the sliding block, and the cutting line is set between two limit wheels.

[0008] Furthermore, two drive wheels are rotatably mounted at both ends of the upper block. The drive wheels are used to change the movement trajectory of the cutting line. The drive wheels actively rotate to drive the cutting line to circulate. The limiting wheel is used to keep the cutting line in a taut state.

[0009] Furthermore, a lower top block is provided inside the bed, and the lower top block is located below the conveyor belt. Two lower rollers are rotatably mounted on the lower top block. The lower rollers are used to limit the movement trajectory of the cutting line. The lower rollers, drive wheels, and limit wheels are all used to limit the movement trajectory of the cutting line. In actual use, the limit wheels are used to keep the cutting line taut, so that the cutting line can cut the non-woven fabric during the cyclical movement.

[0010] Furthermore, an adjusting screw is rotatably installed in the sliding groove of the straight block on the supporting horizontal plate. The adjusting screw is threadedly connected to the straight block and is used to change the position of the straight block on the supporting horizontal plate.

[0011] Furthermore, multiple linear rollers are rotatably mounted on the linear block, and the cutting line is positioned between the linear rollers during operation. The linear rollers are used to change the movement state of the cutting line. Limiting holes are provided inside the linear block, and the cutting line passes through the limiting holes inside the linear block. A wear-resistant layer is provided inside the limiting holes to enhance the service life of the linear block.

[0012] Furthermore, the reciprocating block is provided with a positioning hole, the cutting line passes through the positioning hole in the reciprocating block, and the limiting hole is provided with a wear-resistant layer to enhance the service life of the reciprocating block.

[0013] Furthermore, a tensioning wheel is rotatably installed inside the protective shell. The tensioning wheel is used to control the fixed state of the nonwoven fabric during cutting. The rotation of the tensioning wheel can be synchronized with the rotation of the conveyor belt. The tensioning wheel and the conveyor belt are used to drive the movement of the nonwoven fabric.

[0014] Furthermore, the bed is equipped with two sets of conveyor belts for conveying non-woven fabric. A lead-line block is fixedly installed inside the bed and is located at the transition between the conveyor belts. The lead-line block has a through groove, through which the non-woven fabric passes.

[0015] The advantages of this utility model compared with the prior art are: (1) This device adjusts the connection position of the connecting rod on the connecting slider so that the reciprocating block moves back and forth, and moves the non-woven fabric in the device so that the device can continuously cut regular patterns. This not only improves the adaptability of the device during cutting, but also improves the cutting efficiency of the device; (2) This device cuts the non-woven fabric by setting a cutting line, and adjusts the cutting line to cut the non-woven fabric by the reciprocating block so that the device can cut regular patterns. Furthermore, the conveyor belt can also enable the device to continuously cut, thus improving work efficiency; (3) This device tightens the spring and the limiting wheel so that the cutting line can be in a taut state after being driven by the reciprocating block, thus ensuring the accuracy of the cutting line when cutting the non-woven fabric and avoiding excessive cutting errors. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the conveyor belt, protective shell, tensioning wheel, and lead wire block of this utility model.

[0018] Figure 3 This is a cross-sectional structural diagram of the limiting wheel, drive wheel, linear block, linear roller, lower roller, reciprocating block, reciprocating roller, protective shell, and supporting cross plate of this utility model.

[0019] Figure 4 This is a schematic diagram of the connecting rod structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the upper block structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the reciprocating block structure of this utility model.

[0022] Figure 7 This is a cross-sectional structural diagram of the reciprocating block, reciprocating roller, protective shell, crank rod, connecting slider, connecting rod, and supporting cross plate of this utility model.

[0023] Figure 8 This is a schematic diagram of the adjusting screw structure of this utility model.

[0024] Figure 9 This is a schematic diagram of the upper block structure of this utility model.

[0025] Figure 10 This is a schematic diagram of the tensioning spring structure of this utility model.

[0026] Reference numerals: 101-Bed; 102-Conveyor belt; 103-Protective shell; 104-Tightening wheel; 105-Lead block; 201-Upper block; 202-Sliding block; 203-Tightening spring; 204-Limit wheel; 205-Cutting line; 206-Drive wheel; 207-Straight block; 208-Straight roller; 209-Lower block; 210-Lower roller; 211-Reciprocating block; 212-Reciprocating roller; 301-Servo motor; 302-Protective shell plate; 303-Crank rod; 304-Connecting slider; 305-Crank screw; 306-Connecting rod; 308-Support plate; 309-Adjusting screw. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] Example 1:

[0029] This embodiment discloses a nonwoven fabric trimming device capable of achieving asymmetrical trimming in the width direction, specifically as follows: Figures 1 to 6 As shown, the device includes a bed 101, which contains two sets of conveyor belts 102 for conveying nonwoven fabric. A lead-line block 105 is fixedly installed inside the bed 101 and is located at the transition between the conveyor belts 102. The lead-line block 105 has a through groove, through which the nonwoven fabric passes.

[0030] Two protective shells 103 are slidably mounted on the bed 101. The protective shells 103 are controlled by a torsion screw mounted on the bed 101. A tensioning wheel 104 is rotatably mounted inside the protective shell 103. The tensioning wheel 104 is used to control the fixed state of the nonwoven fabric during cutting. The rotation of the tensioning wheel 104 can be synchronized with the rotation of the conveyor belt 102. The tensioning wheel 104 and the conveyor belt 102 are used to drive the movement of the nonwoven fabric.

[0031] The protective shell 103 is provided with an upper top block 201, and a sliding block 202 is slidably installed on the upper top block 201. A tensioning spring 203 is fixedly installed inside the upper top block 201, and the other end of the tensioning spring 203 is fixedly installed on the upper top block 201. Multiple limiting wheels 204 are rotatably installed on one side of the sliding block 202. A cutting line 205 is provided between two of the limiting wheels 204. The cutting line 205 is used to cut the non-woven fabric. Two drive wheels 206 are rotatably installed at both ends of the upper top block 201. The drive wheels 206 are used to change the movement trajectory of the cutting line 205. The drive wheels 206 actively rotate to drive the cutting line 205 to circulate. The limiting wheels 204 are used to keep the cutting line 205 in a taut state.

[0032] A lower top block 209 is provided inside the bed 101. The lower top block 209 is located below the conveyor belt 102. Two lower rollers 210 are rotatably mounted on the lower top block 209. The lower rollers 210 are used to limit the movement trajectory of the cutting line 205. The lower rollers 210, drive wheel 206, and limit wheel 204 are all used to limit the movement trajectory of the cutting line 205. In actual use, the limit wheel 204 is used to keep the cutting line 205 taut, so that the cutting line 205 can cut the non-woven fabric during the cyclic movement.

[0033] Example 2:

[0034] As described in Embodiment 1, this embodiment further elaborates on the structure of the protective shell 103, specifically as follows: Figures 1 to 4 As shown, a support plate 308 is fixedly installed on the protective shell 103. The support plate 308 is provided with two sliding grooves. A straight block 207 is slidably installed on the support plate 308. The straight block 207 is disposed in one of the sliding grooves of the support plate 308. An adjusting screw 309 is rotatably installed in the sliding groove of the straight block 207 on the support plate 308. The adjusting screw 309 is threadedly connected to the straight block 207. The adjusting screw 309 is used to change the position of the straight block 207 on the support plate 308.

[0035] Multiple linear rollers 208 are rotatably mounted on the linear block 207. When the cutting line 205 is working, it is located between the linear rollers 208. The linear rollers 208 are used to change the movement state of the cutting line 205. Limiting holes are provided in the linear block 207. The cutting line 205 passes through the limiting holes in the linear block 207. A wear-resistant layer is provided in the limiting holes to enhance the service life of the linear block 207.

[0036] A reciprocating block 211 is slidably mounted on the supporting horizontal plate 308. The reciprocating block 211 is disposed in another sliding groove of the supporting horizontal plate 308. Two reciprocating rollers 212 are rotatably mounted on the reciprocating block 211. The cutting wire 205 is positioned between the reciprocating rollers 212 during operation. The reciprocating rollers 212 are used to change the movement state of the cutting wire 205. A positioning hole is provided in the reciprocating block 211, through which the cutting wire 205 passes. A wear-resistant layer is provided in the positioning hole to increase wear resistance. The service life of the reciprocating block 211 is extended when the cutting line 205 passes through the straight block 207 and the reciprocating block 211 during installation. The connection of the cutting line 205 is opened, and then it passes through the drive wheel 206, the limit wheel 204, the straight roller 208, the straight block 207, the lower roller 210, the reciprocating block 211, and the reciprocating roller 212. After that, the connection of the cutting line 205 is closed. The position of the reciprocating block 211 on the support plate 308 can be changed to change the contact position between the cutting line 205 and the nonwoven fabric.

[0037] Example 3:

[0038] As described in Embodiment 1, this embodiment further elaborates on the structure of one side of the bed 101, specifically as follows: Figures 4 to 10As shown, a protective shell 302 is fixedly installed on one side of the bed 101. A servo motor 301 is provided on the outer wall of the protective shell 302. A crank 303 is rotatably installed inside the protective shell 302. The output shaft of the servo motor 301 is fixedly connected to the crank 303. A connecting slider 304 is rotatably installed on the crank 303. The connecting slider 304 is disposed inside the protective shell 302. A connecting rod 306 is slidably installed on the connecting slider 304. A rotatable connecting rod 306 is rotatably installed inside the connecting rod 306. A crank screw 305 is installed, which is threadedly connected to a connecting slider 304. The crank screw 305 drives the connecting slider 304 to slide on a connecting rod 306. One end of the connecting rod 306 is rotatably connected to a reciprocating block 211. The connection between the connecting rod 306 and the reciprocating block 211 is secured by bolts to facilitate subsequent disassembly and replacement of the connecting rod 306. The connecting rod 306, crank 303, and reciprocating block 211 form a crank-slider mechanism. The servo motor 30... 1. After startup, the crank 303 rotates within the protective housing 302, which in turn drives the reciprocating block 211 to slide within the sliding groove of the supporting horizontal plate 308 via the connecting rod 306. During the movement, if it is necessary to adjust the travel distance of the reciprocating block 211, the crank screw 305 is rotated to change the rotational connection point between the connecting slider 304 and the crank 303. The greater the distance between the connecting slider 304 and the reciprocating block 211, the longer the reciprocating block 211 travels within the sliding groove of the supporting horizontal plate 308. The greater the distance of reciprocating movement on the 08, the smaller the distance between the connecting slider 304 and the reciprocating block 211, the smaller the distance that the reciprocating block 211 moves back and forth on the support plate 308. This allows the device to cut the edges of the non-woven fabric. By reciprocating the movement of the reciprocating block 211, wave patterns of different amplitudes can be cut on one side of the non-woven fabric. In addition, by controlling the start and stop of the servo motor 301, more complex patterns can be completed, such as stepped, sawtooth, and other regular patterns.

[0039] Working principle of this device: When in use, the nonwoven fabric is transported by the conveyor belt 102, moving from one conveyor belt 102 to another. During this process, the nonwoven fabric passes through the guide block 105, and the tensioning wheel 104 presses down on the nonwoven fabric as it passes, thus keeping the nonwoven fabric taut between the two tensioning wheels 104. The distance between the tensioning wheel 104 and the conveyor belt 102 is adjusted by turning the screw. Specifically, the adjustment is made by turning the screw to change the tensioning wheel 104 according to the thickness of the nonwoven fabric.

[0040] In the specific operation of this device, the cutting process is achieved by driving the cutting wire 205 to circulate within the device to cut the non-woven fabric. Specifically, the cutting wire 205 is driven to rotate by the drive wheel 206. During this rotation, the direction of movement of the cutting wire 205 is generally... Figure 6 The nonwoven fabric can be cut by circulating clockwise along the cutting line 205.

[0041] When the cutting line 205 is performing cyclic cutting, the servo motor 301 will also be started. At this time, the servo motor 301 drives the reciprocating block 211 to move back and forth on the support plate 308 through the crank 303 and the connecting rod 306, thereby changing the contact point between the cutting line 205 and the non-woven fabric on one side of the reciprocating block 211. At the same time, the non-woven fabric moves on the conveyor belt 102, thus completing the cutting of regular patterns. During the reciprocating motion of the reciprocating block 211, the position of its straight block 207 can also be manually adjusted. That is, by rotating the adjusting screw 309, the contact point between the straight block 207 and the non-woven fabric is adjusted, thereby changing the width on the other side. In addition, this device may also replace the straight block 207, adjusting screw 309 and other parts by setting two reciprocating blocks 211, i.e., corresponding mechanisms, to allow both sides of the non-woven fabric to be cut into polygons at the same time.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A trimming device for nonwoven fabric processing capable of asymmetrical trimming in the width direction, comprising a bed (101) and a cutting line (205), characterized in that: Two protective shells (103) are slidably mounted on the bed (101). A support cross plate (308) is fixedly mounted on the protective shell (103). The support cross plate (308) is provided with two sliding grooves. A linear block (207) is slidably mounted on the support cross plate (308). The linear block (207) is located in one of the sliding grooves of the support cross plate (308). A reciprocating block (211) is slidably mounted on the support cross plate (308). The reciprocating block (211) is located in the support cross plate (308). In another sliding groove of the support plate (308), two reciprocating rollers (212) are rotatably installed on the reciprocating block (211). When the cutting line (205) is working, it is located between the reciprocating rollers (212). The reciprocating rollers (212) are used to change the movement state of the cutting line (205). The cutting line (205) is used to cut the non-woven fabric. After the position of the reciprocating block (211) on the support plate (308) is changed, the contact position between the cutting line (205) and the non-woven fabric can be changed.

2. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 1, characterized in that: A protective shell plate (302) is fixedly installed on one side of the bed (101). A crank rod (303) is rotatably installed inside the protective shell plate (302). A connecting slider (304) is rotatably installed on the crank rod (303). The connecting slider (304) is located inside the protective shell plate (302). A connecting rod (306) is slidably installed on the connecting slider (304). A crank screw (305) is rotatably installed inside the connecting rod (306). The crank screw (305) is threadedly connected to the connecting slider (304). The crank screw (305) is used to drive the connecting slider (304) to slide on the connecting rod (306). One end of the connecting rod (306) is rotatably connected to the reciprocating block (211). The connecting rod (306), the crank rod (303), and the reciprocating block (211) form a crank-slider mechanism.

3. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 1, characterized in that: The protective shell (103) is provided with an upper top block (201), a sliding block (202) is slidably installed on the upper top block (201), a tensioning spring (203) is fixedly installed inside the upper top block (201), the other end of the tensioning spring (203) is fixedly installed on the upper top block (201), a plurality of limit wheels (204) are rotatably installed on one side of the sliding block (202), and the cutting line (205) is set between two limit wheels (204).

4. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 3, characterized in that: The upper block (201) has two drive wheels (206) rotatably mounted at both ends. The drive wheels (206) are used to change the movement trajectory of the cutting line (205). The drive wheels (206) rotate actively to drive the cutting line (205) to circulate. The limiting wheel (204) is used to keep the cutting line (205) in a taut state.

5. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 1, characterized in that: The bed (101) is provided with a lower top block (209), which is located below the conveyor belt (102). Two lower rollers (210) are rotatably mounted on the lower top block (209) to limit the movement trajectory of the cutting line (205).

6. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 1, characterized in that: An adjusting screw (309) is rotatably installed in the sliding groove of a straight block (207) on the support plate (308). The adjusting screw (309) is threadedly connected to the straight block (207) and is used to change the position of the straight block (207) on the support plate (308).

7. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 6, characterized in that: Multiple linear rollers (208) are rotatably mounted on the linear block (207). The cutting line (205) is positioned between the linear rollers (208) during operation. The linear rollers (208) are used to change the motion state of the cutting line (205). Limiting holes are provided inside the linear block (207). The cutting line (205) passes through the limiting holes inside the linear block (207). A wear-resistant layer is provided inside the limiting holes to enhance the service life of the linear block (207).

8. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 7, characterized in that: The reciprocating block (211) is provided with a positioning hole, the cutting line (205) passes through the positioning hole in the reciprocating block (211), and the limiting hole is provided with a wear-resistant layer to enhance the service life of the reciprocating block (211).

9. The nonwoven fabric trimming device for achieving asymmetrical trimming in the width direction according to claim 1, characterized in that: A tensioning wheel (104) is rotatably installed inside the protective shell (103). The tensioning wheel (104) is used to control the fixed state when the nonwoven fabric is cut. The rotation of the tensioning wheel (104) can be synchronized with the rotation of the conveyor belt (102). The tensioning wheel (104) and the conveyor belt (102) are used to drive the movement of the nonwoven fabric.

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