Tear-off towel fabric cutting size calibration device

Abstract

The utility model relates to textile fabric processing equipment technical field discloses the cloth fabric cutting size calibration device of tear, including lathe, the fixed installation of positioning mechanism and clamping mechanism is established in the lathe upside, positioning mechanism utilizes electric push rod drive slide bar and moves along the sliding slot, the slide bar bottom is equipped with the compression assembly including disc spring, connecting column and rolling wheel, utilizes the buffer of disc spring and rolling wheel contact surface fabric, realizes the flexible compression positioning to fabric, and clamping mechanism moves through fluid drive piston and drives the wedge core cover, and the wedge core cover drives the clamping jaw radial to draw together through the cooperation of outer taper surface and the inner taper surface of clamping jaw, realizes the centering clamping of tool. The utility model solves the problem that rigid fixed easily damages fabric through flexible compression assembly, improves the stability and the replacement efficiency of tool fixation through the wedge clamping structure, effectively guarantees the calibration precision of cloth cutting size.

Description

Technical Field

[0001] This utility model relates to the technical field of textile fabric processing equipment, and in particular to a device for calibrating the cutting size of tearable cloth fabric. Background Technology

[0002] In the production and processing of tearable cloth fabric, in order to meet the market demand for different specifications and sizes, it is necessary to use automated cutting equipment to cut the rolled fabric into specific lengths and widths. In this process, in order to ensure the neatness of the cut edges and the uniformity of the finished product size, the fabric conveyed to the processing station must be positioned and firmly pressed before the cutting blade performs the cutting action to prevent the fabric from shifting relative to the conveyor belt under the action of vibration and cutting force.

[0003] However, most existing fabric cutting devices use rigid metal pressure plates and fixed blocks to directly contact and press the fabric surface when positioning and fixing the fabric. This rigid contact method lacks buffering and self-adaptation capabilities and cannot effectively adapt to the uneven thickness and relatively soft texture of tearable cloth fabrics. When the fabric thickness changes slightly, the rigid pressure plate is unable to provide uniform and constant pressing force, causing the fabric to loosen and shift in position during the cutting process. This results in deviations in the final cut cloth size, which cannot meet the calibration requirements. Furthermore, the rigid structure generates significant sliding friction resistance with the fabric during movement and alignment, which can scratch the fabric surface and cause the fabric to wrinkle and stack, seriously affecting the processing quality and production efficiency of the product.

[0004] Therefore, this utility model proposes a tearable cloth fabric cutting size calibration device to address the shortcomings of the prior art. Utility Model Content

[0005] In the existing technology, tearable rag fabric cutting devices mostly use rigid structures to directly press the fabric during the fabric positioning stage, which lacks the ability to adapt to fabrics of different thicknesses. This leads to uneven force on the fabric, causing it to shift and get scratched, which in turn affects the cutting size accuracy. In addition, the existing devices have cumbersome tool clamping methods, inaccurate centering, and unstable clamping force, which seriously restricts production efficiency and processing quality. The present invention aims to provide a tearable rag fabric cutting size calibration device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a tearable cloth fabric cutting size calibration device, including a machine tool, and a positioning mechanism and a clamping mechanism fixedly installed on the upper side of the machine tool.

[0007] The positioning mechanism includes a fixed plate fixedly installed on the upper side of the machine tool. An electric push rod is fixedly installed on the upper side of the fixed plate. A first fixing block is fixedly installed around the electric push rod. A sliding groove is opened on the first fixing block. A sliding rod is slidably connected in the sliding groove. The sliding rod is fixedly connected to the output end of the electric push rod. A connecting rod is threadedly connected to the top center of the sliding rod. A positioning block is threadedly connected to the connecting rod by bolts. A rolling shaft is rotatably installed in the center of the positioning block. A second fixing block is fixedly installed at the bottom end of the sliding rod. A U-shaped block is fixedly connected to the bottom of the second fixing block by a connecting column. A rolling wheel is rotatably installed inside the U-shaped block. A disc spring is installed on the inner side of the second fixing block.

[0008] Furthermore, the positioning mechanism drives the slide bar and the second fixing block to move via the electric push rod, and uses the flexible pressing assembly formed by the disc spring and the rolling wheel to engage the fabric. The clamping mechanism includes a base fixedly installed on the upper side of the machine tool, a cylinder fixedly connected to the base, a piston slidably connected inside the cylinder, a wedge sleeve connected to the piston, and a gripper slidably connected to the bottom of the wedge sleeve. The piston drives the wedge sleeve to move axially, and the wedge structure drives the gripper to retract radially to clamp the tool.

[0009] Preferably, a sealing ring one is fitted between the inner wall of the cylinder and the piston, and a sealing ring two is fitted between the outer wall of the wedge sleeve and the inner wall of the cylinder. The sealing ring one and the sealing ring two can effectively prevent leakage of the pressure medium and ensure that the clamping mechanism maintains stable internal pressure and power output during operation.

[0010] Preferably, the outer surface of the wedge sleeve is an outer conical surface, and the inner surface of the gripper is an inner conical surface. The outer conical surface of the wedge sleeve and the inner conical surface of the gripper maintain contact and fit. When the wedge sleeve moves axially, the gripper is driven to retract and reset in the radial direction using the inclined plane transmission principle, thereby achieving strong centering and clamping of the tool.

[0011] Preferably, the upper end of the connecting post extends into the interior of the second fixing block and abuts against the disc spring. The disc spring is located between the second fixing block and the connecting post. The disc spring can provide axial buffer stroke and constant rebound force when the rolling wheel is compressed, so that the positioning mechanism can adapt to different thicknesses of rag fabric and maintain a flexible pressing state.

[0012] Preferably, there are two electric push rods, which are fixedly installed on the upper side of the fixed plate. The output end of each electric push rod is fixedly connected to the slide rod. The fixed block is set in a corresponding manner to the electric push rod. This dual-drive layout can provide a more balanced thrust and ensure that the positioning components on the left and right sides maintain force balance during movement.

[0013] Preferably, there are two connecting rods, which are threaded to the middle of the top of the two slide rods respectively, and both connecting rods are threaded to the positioning block by bolts. The linkage mechanism formed by the connecting rods, the positioning block and the rolling shaft enables the two slide rods to maintain mechanical synchronization and stable posture during movement.

[0014] Preferably, multiple fixing blocks are provided, and the multiple fixing blocks are respectively fixedly installed on the left and right bottom ends of the two slide rods. By distributing them at multiple points, a wider fabric area can be covered, providing a more uniform positioning effect.

[0015] Preferably, the number of disc springs, connecting columns, U-shaped blocks, and rolling wheels are all set to correspond one-to-one with the number of fixed blocks, ensuring that each pressing point has an independent buffer adjustment function, thereby further improving the stability and adaptability of the overall positioning mechanism.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model solves the problems of rigid pressing devices scratching the fabric surface and being unable to adapt to fabrics of different thicknesses, resulting in unstable positioning, by setting a pressing component including a disc spring and a rolling wheel at the bottom of the slide rod. It utilizes the contact between the rolling wheel and the fabric to convert sliding friction into rolling friction, and with the elastic buffering effect of the disc spring, it achieves the effect of effectively protecting the fabric while achieving flexible and constant pressing force, ensuring that the fabric remains in a fixed position and does not shift during the cutting process.

[0018] 2. This utility model uses a fluid-driven piston in the clamping mechanism to move the wedge sleeve, and uses the outer conical surface of the wedge sleeve to abut and wedge tightly with the inner conical surface of the gripper. This solves the problems of cumbersome operation, insufficient clamping force and poor centering accuracy in the existing tool clamping methods. It can automatically achieve tool centering and clamping, and the wedge structure amplifies the clamping force and provides self-locking protection, which significantly improves the stability of tool clamping and the efficiency of tool replacement.

[0019] 3. This utility model directly drives the slide bar to move along the slide groove through an electric push rod, and forms a linkage guide structure with the connecting rod and positioning block at the top. This solves the problems of limited adjustment range of positioning device and jamming and shaking during the movement process in the prior art. It can quickly and accurately adjust the positioning width according to different specifications of cloth fabric, and the movement process is smooth and synchronous, which improves the accuracy of cutting size calibration. Attached Figure Description

[0020] Figure 1 This is a perspective view of the tearable cloth fabric cutting size calibration device proposed in this utility model.

[0021] Figure 2 This is a front view of the tearable cloth fabric cutting size calibration device proposed in this utility model;

[0022] Figure 3 This is a partial structural diagram of the positioning mechanism of the tearable cloth fabric cutting size calibration device proposed in this utility model;

[0023] Figure 4 This is a partial structural schematic diagram of the positioning mechanism of the tearable cloth fabric cutting size calibration device proposed in this utility model.

[0024] Figure 5 This is a cross-sectional view of the clamping mechanism of the tearable cloth fabric cutting size calibration device proposed in this utility model.

[0025] Legend:

[0026] 1. Machine tool; 2. Positioning mechanism; 201. Electric push rod; 202. Slide rod; 203. Connecting rod; 204. Bolt; 205. Rolling shaft; 206. Positioning block; 207. Fixing plate; 208. Slide groove; 209. Fixing block one; 210. Fixing block two; 211. U-shaped block; 212. Connecting column; 213. Disc spring; 214. Rolling wheel; 3. Clamping mechanism; 301. Gripper; 302. Base; 303. Piston; 304. Cylinder; 305. Sealing ring one; 306. Wedge sleeve; 307. Sealing ring two. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Example:

[0029] Please refer to Figures 1 to 5 This utility model provides a tearable rag fabric cutting size calibration device, which aims to solve the problems in the prior art where the rag fabric shifts during the cutting process, resulting in inaccurate dimensions, and the unstable clamping and inconvenience of the cutting tool.

[0030] Please refer to Figure 1 and Figure 2 The tearable rag fabric cutting size calibration device includes a machine tool 1, a positioning mechanism 2 and a clamping mechanism 3 fixedly installed on the upper side of the machine tool 1. The machine tool 1 serves as the support platform for the entire device and is used to carry the rag fabric to be processed. The positioning mechanism 2 is used to flexibly press and position rags of different thicknesses after the fabric is transferred to the position to prevent processing deviation. The clamping mechanism 3 is used to drive the mechanical structure through internal fluid pressure to realize automatic centering clamping and rapid release of the cutting tool.

[0031] Please refer to Figure 1 , Figure 3 and Figure 4 The positioning mechanism 2 includes a fixed plate 207 fixedly installed on the upper side of the machine tool 1. Two electric push rods 201 are symmetrically fixedly installed on the left and right ends of the upper side of the fixed plate 207. The electric push rods 201 serve as the active power source to drive the movement of the positioning component. Each electric push rod 201 is fixedly installed with a fixing block 209 around its perimeter. The fixing block 209 has a sliding groove 208 extending in the front-back direction. A sliding rod 202 is slidably connected inside the sliding groove 208. One end of the sliding rod 202 is fixedly connected to the output end of the electric push rod 201. When the electric push rod 201 extends or retracts, it directly drives the sliding rod 202 to reciprocate linearly along the path of the sliding groove 208.

[0032] Please refer to Figure 3 A connecting rod 203 is threaded to the top center of the slide rod 202. The end of the connecting rod 203 away from the slide rod 202 is threaded to a positioning block 206 by a bolt 204. A rolling shaft 205 is rotatably connected to the center of the positioning block 206. The connecting rod 203, the positioning block 206, and the rolling shaft 205 cooperate to form a linkage guide structure. This structure can rotate with the slide rod 202 when it moves to assist in support and maintain the synchronicity and stability of the movement on both sides.

[0033] Please refer to Figure 3 and Figure 4Each slide bar 202 has multiple fixing blocks 210 fixedly installed on its left and right bottom ends. The fixing blocks 210 serve as the mounting base for the clamping assembly and move synchronously with the slide bar 202. A disc spring 213 is installed inside the fixing block 210. The disc spring 213 has the characteristics of a conical spring and can provide axial buffer stroke and elastic force. The bottom of the disc spring 213 abuts against a connecting post 212. The upper end of the connecting post 212 extends into the interior of the fixing block 210 and contacts the disc spring 213. A U-shaped block 211 is fixedly connected to the lower end of the connecting post 212 away from the disc spring 213. The U-shaped block 211 has a downward opening structure for installing a rolling component. A rolling wheel 214 is rotatably installed inside the opening of the U-shaped block 211 via a rotating shaft. The lower surface of the rolling wheel 214 protrudes from the bottom surface of the U-shaped block 211 to directly contact the cloth fabric. This design utilizes the rolling wheel 214 By converting sliding friction into rolling friction, scratches on the fabric are avoided. At the same time, the elastic deformation of the disc spring 213 absorbs changes in fabric thickness and provides constant clamping force, ensuring that cloths of different specifications can be stably fixed after being transported to their positions without easily shifting. Furthermore, when the connecting column 212 is subjected to the reaction force from below, it can make a slight axial movement within the fixing block 210 and squeeze the disc spring 213. The rebound force generated by the disc spring 213 after being compressed is transmitted to the rolling wheel 214 through the connecting column 212 and the U-shaped block 211, so that the rolling wheel 214 always maintains a tight fit with the fabric. This elastic clamping structure based on the disc spring 213 ensures that the positioning mechanism 2 can maintain an efficient and stable positioning effect when facing cloths with uneven surfaces and varying thicknesses, effectively solving the problems of rigid clamping damaging the fabric and incomplete clamping.

[0034] As a preferred embodiment, to achieve stable and automated clamping of the cutting tool, please refer to... Figure 1 and Figure 5 The clamping mechanism 3 includes a base 302 fixedly mounted on the upper side of the machine tool 1. A vertically arranged cylinder 304 is fixedly connected to the upper surface of the base 302. A piston 303 is slidably connected to the inner wall of the cylinder 304. A wedge sleeve 306 is connected to the lower end face of the piston 303. The wedge sleeve 306 reciprocates axially within the cylinder 304 along with the piston 303. A gripper 301 is slidably connected to the bottom of the wedge sleeve 306. The outer surface of the wedge sleeve 306 is a conical surface. The inner surface of 301 is constructed as an inner conical surface that is adapted to the wedge sleeve 306. The outer conical surface of the wedge sleeve 306 and the inner conical surface of the jaw 301 are in abutting fit. When the piston 303 is pressed and drives the wedge sleeve 306 to move axially, the wedge sleeve 306 drives the jaw 301 to retract radially inward to clamp the tool and to reset outward to release the tool through the wedge clamping action of the inclined surface. This wedge-shaped transmission structure can significantly amplify the clamping force and has a self-locking tendency, thereby improving the safety of clamping.

[0035] As another preferred embodiment, to ensure the sealing of the fluid medium inside the clamping mechanism 3 and maintain stable power output, please continue to refer to... Figure 5 A sealing ring 305 is fitted between the inner wall of the cylinder 304 and the outer circumferential surface of the piston 303. The sealing ring 305 moves with the piston 303 and always maintains a dynamic seal on the inner wall of the cylinder 304. At the same time, a sealing ring 307 is fitted between the outer wall of the wedge sleeve 306 and the inner wall of the lower end of the cylinder 304. The sealing ring 307 is used to prevent the medium from leaking from the protrusion of the wedge sleeve 306. Through the double sealing cooperation of the sealing ring 305 and the sealing ring 307, the airtightness and liquid tightness of the internal pressure chamber of the cylinder 304 are ensured, so that the piston 303 can obtain a continuous and stable thrust.

[0036] In another preferred embodiment, in order to achieve uniform pressing at multiple points, multiple fixing blocks 210 are provided. The multiple fixing blocks 210 are distributed at intervals along the front-back direction and are respectively fixedly installed on the left and right bottom ends of the two slide bars 202. The corresponding number of disc springs 213, connecting columns 212, U-shaped blocks 211 and rolling wheels 214 are also set one-to-one with the number of fixing blocks 210. This multi-point array pressing layout can cover a larger area of ​​the cloth fabric, ensuring that the fabric can be uniformly and effectively positioned and constrained throughout the entire conveying and cutting area.

[0037] Working principle:

[0038] After the rag fabric is conveyed to the designated processing position of machine tool 1 via the external conveyor belt, the two electric push rods 201 in the positioning mechanism 2 are activated. The electric push rods 201 push the two slide rods 202 to move along the slide groove 208 on the fixed block 1 209 towards the center of the fabric. The movement of the slide rods 202 causes the connecting rod 203 and the positioning block 206 at the top to rotate around the rolling shaft 205 to maintain the stability and synchronization of the mechanism's movement. At the same time, the multiple fixed blocks 210 at the bottom of the slide rods 202 move accordingly and drive the U-shaped block 211 and the rolling wheel 214 below to approach the rag fabric. When the rolling wheel 214 contacts the rag surface, the U-shaped block 211 is forced to press the disc spring 213 inside the fixed block 210 upward through the connecting column 212. The disc spring 213 generates an elastic reaction force to make the rolling wheel 214 press the fabric tightly, thereby achieving flexible positioning of rags of different thicknesses and preventing the rag from shifting in subsequent processing.

[0039] When the cutting tool needs to be clamped after the fabric positioning is completed, a pressure medium is introduced into the cylinder 304 of the clamping mechanism 3. The medium pressure pushes the piston 303 to drive the wedge sleeve 306 to move downward along the inner wall of the cylinder 304. During this process, the sealing ring 305 and the sealing ring 307 maintain a seal to ensure stable power output. When the wedge sleeve 306 moves downward, its outer conical surface presses against the inner conical surface of the gripper 301. Through the amplification effect of the wedge surface, the gripper 301 is driven to forcefully close towards the center, thereby achieving centering and clamping of the tool. When the tool needs to be replaced, the medium in the cylinder 304 is controlled to flow in the reverse direction. The piston 303 drives the wedge sleeve 306 to move in the reverse direction to separate the conical surfaces. After the gripper 301 is unrestrained, it resets outward to release the tool, thus completing the quick loading and unloading of the tool and the preparation for size calibration.

Claims

1. A tearable cloth fabric cutting size calibration device, comprising a machine tool (1), characterized in that, The upper side of the machine tool (1) is fixedly equipped with a positioning mechanism (2) and a clamping mechanism (3); The positioning mechanism (2) includes a fixed plate (207) fixedly installed on the upper side of the machine tool (1). An electric push rod (201) is fixedly installed on the upper side of the fixed plate (207). A fixing block (209) is fixedly installed around the electric push rod (201). A sliding groove (208) is provided on the fixing block (209). A sliding rod (202) is slidably connected in the sliding groove (208). The sliding rod (202) is fixedly connected to the output end of the electric push rod (201). The top center of the sliding rod (202) is threaded. There is a connecting rod (203), and the connecting rod (203) is threadedly connected to a positioning block (206) by a bolt (204). A rolling shaft (205) is rotatably installed in the middle of the positioning block (206). A fixing block two (210) is fixedly installed at the bottom end of the slide rod (202). A U-shaped block (211) is fixedly connected to the bottom of the fixing block two (210) by a connecting column (212). A rolling wheel (214) is rotatably installed inside the U-shaped block (211). A disc spring (213) is installed on the inner side of the fixing block two (210).

2. The tearable cloth fabric cutting size calibration device according to claim 1, characterized in that, The clamping mechanism (3) includes a base (302) fixedly installed on the upper side of the machine tool (1), a cylinder (304) fixedly connected to the base (302), a piston (303) slidably connected inside the cylinder (304), a wedge sleeve (306) connected to the piston (303), and a gripper (301) slidably connected to the bottom of the wedge sleeve (306).

3. The tearable cloth fabric cutting size calibration device according to claim 2, characterized in that, A sealing ring one (305) is fitted between the inner wall of the cylinder (304) and the piston (303), and a sealing ring two (307) is fitted between the outer wall of the wedge sleeve (306) and the inner wall of the cylinder (304).

4. The tearable cloth fabric cutting size calibration device according to claim 2, characterized in that, The outer surface of the wedge sleeve (306) is an outer conical surface, and the inner surface of the gripper (301) is an inner conical surface. The outer conical surface of the wedge sleeve (306) and the inner conical surface of the gripper (301) are in contact and engaged.

5. The tearable cloth fabric cutting size calibration device according to claim 1, characterized in that, The upper end of the connecting post (212) extends into the interior of the fixing block two (210) and abuts against the disc spring (213), the disc spring (213) being located between the fixing block two (210) and the connecting post (212).

6. The tearable cloth fabric cutting size calibration device according to claim 1, characterized in that, Two electric push rods (201) are provided and are fixedly installed on the upper side of the fixing plate (207). The output end of each electric push rod (201) is fixedly connected to the slide rod (202). The fixing block (209) is provided corresponding to the electric push rod (201).

7. The tearable cloth fabric cutting size calibration device according to claim 6, characterized in that, There are two connecting rods (203), which are threaded to the top center of the two slide rods (202) respectively, and both connecting rods (203) are threaded to the positioning block (206) by bolts (204).

8. The tearable cloth fabric cutting size calibration device according to claim 6, characterized in that, Multiple fixing blocks (210) are provided, and the multiple fixing blocks (210) are respectively fixedly installed on the left and right bottom ends of the two slide rods (202).

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