A locking device of a transverse film drawing machine

Abstract

The utility model provides a locking device of transverse film drawing machine relates to polytetrafluoroethylene microporous membrane field. The locking device of transverse film drawing machine, including the fixed frame, the surface of fixed frame is provided with locking mechanism, the locking mechanism includes the locating wheel, fixed base, pressure sensor and pressing plate, the top of fixed frame is provided with the compact mechanism, the compact mechanism includes the hinged plate, support slide, pull rod and adjustment frame. The locking device of transverse film drawing machine, through the pressing plate and fixed base mutual extrusion to the film both sides extrusion, to the surface clamping and fixing, through the locating wheel, to the fixed frame positioning, through pressure sensor, to the pressure sensor bearing pressure detects, when pressure changes, send alarm information, through the support slide to the adjustment frame provides the upward thrust of, makes the other end of hinged plate extrude pull rod downward, through pull rod drive pressing plate moves downward, to the film both sides are fixed.

Description

Technical Field

[0001] This utility model relates to a locking device for a film stretching machine, specifically a locking device for a transverse film stretching machine, belonging to the field of polytetrafluoroethylene microporous membrane technology. Background Technology

[0002] Polytetrafluoroethylene (PTFE) microporous membranes are thin film materials with a uniform microporous structure, made from PTFE dispersion resin through processes such as premixing, extrusion, and biaxial stretching. They can physically trap microorganisms such as bacteria and viruses, and combine with zinc ion antibacterial technology or chlorine dioxide slow-release technology to form a dual-layer protective mechanism. The production process includes key steps such as longitudinal stretching and degreasing, gradient heating, and transverse stretching and shaping.

[0003] The patent CN210851302U is a utility model in the field of transverse film stretching, specifically a clamp for a transverse stretching machine. Addressing the problems of existing clamps being complex in structure, inflexible opening and closing during use, and prone to mechanical damage and tearing of the clamped film edges, the present invention proposes the following solution: It includes a lower clamp plate and an upper clamp plate. The lower clamp plate has a mounting chamber, and a rotating shaft is rotatably connected to one inner wall of the mounting chamber. This utility model has a reasonable structure and simple operation; opening and closing the clamp can be achieved by rotating the shaft in both directions. Simultaneously, the two buffer pads effectively prevent mechanical damage and tearing of the clamped film edges, resulting in good film stretching performance and strong practicality.

[0004] When using a film stretching machine to stretch polytetrafluoroethylene microporous membranes, a locking device is used to fix and clamp the edges of the membrane before stretching. Although the clamps in the aforementioned patent prevent damage to the membrane, they rely on their own weight to fix the membrane. When the tension is too great, the membrane is prone to slipping, which increases the difficulty of stretching the membrane. Utility Model Content

[0005] (a) Technical problems to be solved The purpose of this invention is to provide a locking device for a transverse film stretching machine to solve the above-mentioned problems, thereby addressing the issue that the clamps are prone to slipping off when the tension is too high in the prior art.

[0006] (II) Technical Solution This utility model is achieved through the following technical solution: a locking device for a transverse film stretching machine.

[0007] The device includes a fixed frame, the surface of which is provided with a locking mechanism. The locking mechanism includes a positioning wheel, a fixed base, a pressure sensor, and a pressure plate. The top of the fixed frame is provided with a pressing mechanism, which includes a hinge plate, a support slide plate, a pull rod, and an adjustment frame. The two ends of the pull rod are rotatably connected to the hinge plate and the pressure plate, respectively.

[0008] Preferably, the positioning wheel is rotatably connected to the fixed frame, and the surface of the positioning wheel is slidably connected to the bottom of the film stretching machine. The middle part of the fixed frame is assembled and connected to the rotating chain of the film stretching machine by bolts.

[0009] Preferably, a sliding block is slidably connected inside the fixed base, and the top of the pressure sensor is in contact with the sliding block. Clamping pads are fixedly connected to the sides of the pressure plate and the sliding block that are in contact with each other. A sliding groove is provided in the middle of the fixed frame.

[0010] Preferably, the bottom end of the fixed base is fixedly connected to the fixed frame, the pressure sensor is fixed inside the fixed base, a buffer pad is fixedly connected inside the fixed base, and the top end of the buffer pad is fixedly connected to the sliding block.

[0011] Preferably, a positioning rod is slidably connected inside the sliding groove, and the positioning rod is fixedly connected to the pressure plate. Two positioning plates are fixedly connected to the surface of the positioning rod. Each positioning plate has a limit wheel rotatably connected inside, and each limit wheel is slidably connected to the fixed frame.

[0012] Preferably, a return spring is rotatably connected to the surface of the fixed frame, and the top end of the return spring is hinged to the hinge plate. The interior of the adjusting frame is rotatably connected to a sliding wheel adapted to the supporting slide plate.

[0013] Preferably, the surface of the adjusting frame is fixedly connected to two threaded rods, each of which is threaded with a threaded tube, and each threaded tube is rotatably connected to the hinge plate.

[0014] Preferably, each of the threaded tubes has a sprocket fixedly connected to its surface, and the two sprockets are connected by a chain drive. Each of the threaded tubes has a hexagonal ring fixedly connected to its top end.

[0015] This utility model provides a locking device for a transverse film stretching machine, which has the following beneficial effects: 1. The locking device of this transverse film stretching machine uses the mutual squeezing of the pressure plate and the fixed base to squeeze both sides of the film and clamp and fix the surface. The positioning wheel positions the fixed frame, improving the stability of the fixed frame operation. The pressure sensor detects the pressure it is subjected to and issues an alarm when the pressure changes. The support slide plate provides an upward thrust to the adjustment frame, causing the other end of the hinge plate to squeeze the pull rod downward. The pull rod drives the pressure plate to move downward, fixing and positioning the top of the film.

[0016] 2. The locking device of this transverse film stretching machine supports the fixed frame by having the positioning wheel abut against the surface of the film stretching machine. The fixed frame moves synchronously through the rotary chain drive, which in turn moves the polytetrafluoroethylene (PTFE) microporous membrane, stretching and fixing the PTFE microporous membrane. The fixed base positions the sliding block, improving the stability of the sliding block's movement. Two clamping pads interlock to hold and fix the film, improving the stability of clamping and locking the film on both sides. The buffer pad provides cushioning for the fixed base, allowing the fixed base to slide up and down within a certain range, improving the stability of the sliding block fixing the film. The positioning rod is fixed through the sliding groove.

[0017] 3. The locking device of this transverse film stretching machine reduces the friction between the positioning plate and the fixed frame through the limiting wheel, making the positioning rod slide more smoothly inside the sliding groove. The return spring provides a pushing force to the hinge plate. After the hinge plate disengages from the support slide plate, it controls the hinge plate to move upward and control the pressure plate away from the sliding block, making it easier to remove the stretched film from the device and improving the stability and convenience of film stretching. The sliding wheel reduces the friction between the adjusting frame and the support slide plate, allowing the support slide plate to better press the hinge plate upward. The rotation of the threaded tube on the surface of the threaded rod controls the up and down movement of the adjusting frame, adjusting the distance between the sliding wheel and the hinge plate, improving the stability of the mutual pressing of the two clamping pads. The rotation of the threaded tube can be controlled by the hexagonal ring, and the synchronous rotation of the two threaded tubes can be controlled by the sprocket and chain, improving the stability of the up and down adjustment of the adjusting frame. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the locking mechanism of this utility model; Figure 3 This is a schematic diagram of the positioning rod structure of this utility model; Figure 4 This is a schematic diagram of the adjustment frame structure of this utility model.

[0019] [Explanation of Key Component Symbols] 1. Fixture; 2. Locking mechanism; 201. Positioning wheel; 202. Fixed base; 203. Sliding block; 204. Buffer pad; 205. Pressure sensor; 206. Pressure plate; 207. Clamping pad; 208. Positioning rod; 209. Sliding groove; 210. Positioning plate; 211. Limiting wheel; 3. Clamping mechanism; 301. Hinge plate; 302. Support slide plate; 303. Pull rod; 304. Return spring; 305. Adjusting frame; 306. Sliding wheel; 307. Threaded rod; 308. Threaded tube; 309. Sprocket; 310. Hexagonal ring. Detailed Implementation

[0020] This utility model provides a locking device for a transverse film stretching machine.

[0021] Example 1: Please see Figure 1 , Figure 2 and Figure 3 The device includes a fixed frame 1, and a locking mechanism 2 is provided on the surface of the fixed frame 1. The locking mechanism 2 includes a positioning wheel 201, a fixed base 202, a pressure sensor 205, and a pressure plate 206. The pressure plate 206 and the fixed base 202 squeeze each other to squeeze the two sides of the film and clamp and fix the surface. The positioning wheel 201 positions the fixed frame 1 to improve the stability of the operation of the fixed frame 1. The pressure sensor 205 detects the pressure it is subjected to and issues an alarm when the pressure changes.

[0022] The positioning wheel 201 is rotatably connected to the fixed frame 1, and the surface of the positioning wheel 201 is slidably connected to the bottom of the film stretching machine. The middle part of the fixed frame 1 is assembled and connected to the rotary chain of the film stretching machine by bolts. The positioning wheel 201 abuts against the surface of the film stretching machine to support the fixed frame 1. The rotary chain drives the fixed frame 1 to move synchronously, which in turn drives the polytetrafluoroethylene microporous membrane to move, thus stretching and fixing the polytetrafluoroethylene microporous membrane.

[0023] The fixed base 202 has a sliding block 203 inside, and the top of the pressure sensor 205 is in contact with the sliding block 203. The pressure plate 206 and the side of the sliding block 203 that are in contact with each other are fixedly connected with clamping pads 207. The fixed base 202 positions the sliding block 203 and improves the stability of the movement of the sliding block 203. The two clamping pads 207 are interlocked to clamp and fix the film, improving the stability of clamping and locking the film on both sides.

[0024] The bottom end of the fixed base 202 is fixedly connected to the fixed frame 1. The pressure sensor 205 is fixed inside the fixed base 202. A buffer pad 204 is fixedly connected inside the fixed base 202, and the top end of the buffer pad 204 is fixedly connected to the sliding block 203. The buffer pad 204 provides buffering for the fixed base 202, allowing the fixed base 202 to slide up and down within a certain range, thereby improving the stability of the sliding block 203 in fixing the film.

[0025] Example 2: Please refer to it again. Figure 3 The fixed frame 1 has a sliding groove 209 in the middle. A positioning rod 208 is slidably connected inside the sliding groove 209. One end of the positioning rod 208 is fixedly connected to the pressure plate 206. Two positioning plates 210 are fixedly connected to the surface of the positioning rod 208. Each positioning plate 210 is rotatably connected to a limit wheel 211. Each limit wheel 211 is slidably connected to the fixed frame 1. The positioning rod 208 is limited by the sliding groove 209. The friction between the positioning plate 210 and the fixed frame 1 is reduced by the limit wheel 211, making the positioning rod 208 slide more smoothly inside the sliding groove 209.

[0026] Example 3: Please refer to it again. Figure 1 and Figure 4 The top of the fixed frame 1 is provided with a pressing mechanism 3. The pressing mechanism 3 includes a hinge plate 301, a support slide plate 302, a pull rod 303 and an adjusting frame 305. The two ends of the pull rod 303 are rotatably connected to the hinge plate 301 and the pressure plate 206 respectively. The support slide plate 302 provides an upward thrust to the adjusting frame 305, causing the other end of the hinge plate 301 to press the pull rod 303 downward. The pull rod 303 drives the pressure plate 206 to move downward, thereby fixing and positioning the top of the film.

[0027] A return spring 304 is rotatably connected to the surface of the fixed frame 1, and the top of the return spring 304 is hinged to the hinge plate 301. A sliding wheel 306 adapted to the support slide plate 302 is rotatably connected inside the adjusting frame 305. The return spring 304 provides a thrust to the hinge plate 301. After the hinge plate 301 is disengaged from the support slide plate 302, the hinge plate 301 is controlled to move upward to control the pressure plate 206 away from the sliding block 203, so that the stretched film can be easily removed from the device, improving the stability and convenience of film stretching. The sliding wheel 306 reduces the friction between the adjusting frame 305 and the support slide plate 302, so that the support slide plate 302 can better press the hinge plate 301 upward.

[0028] Two threaded rods 307 are fixedly connected to the surface of the adjusting frame 305. Each threaded rod 307 has a threaded tube 308 threadedly connected to its surface, and each threaded tube 308 is rotatably connected to the hinge plate 301. By rotating the threaded tube 308 on the surface of the threaded rod 307, the adjusting frame 305 is controlled to move up and down, and the distance between the sliding wheel 306 and the hinge plate 301 is adjusted to improve the stability of the two clamping pads 207 pressing against each other.

[0029] Each threaded tube 308 is fixedly connected to a sprocket 309, and the two sprockets 309 are connected by a chain drive. Each threaded tube 308 is fixedly connected to a hexagonal ring 310 at its top. The rotation of the threaded tube 308 can be controlled by the hexagonal ring 310. The synchronous rotation of the two threaded tubes 308 is controlled by the sprockets 309 and the chain, which improves the stability of the adjustment frame 305 in vertical adjustment.

[0030] The pressure sensor 205 can be powered wirelessly to control its normal operation. Under normal circumstances, the pressure generated by the two clamping pads 207 holding the film is relatively large. When the film suddenly falls off, due to the thickness of the film, the two clamping pads 207 will vibrate up and down, and the pressure value of the pressure sensor 205 will fluctuate. When the two clamping pads 207 are not holding the film, the pressure value will be lower than the normal pressure value due to the increased travel distance of the two clamping pads 207. After the pressure sensor 205 detects the value, it will send the data to the processor of the film stretching machine. The processor compares the value and notifies the staff in time to handle the abnormal value, thereby reducing the production of defective products.

[0031] In use, the following steps are taken: First, the support slide plate 302 is fixed directly above the rotary chain. The fixing frame 1 is then fixed to the rotary chain using bolts. The rotation of the threaded tube 308 is controlled by the hexagonal ring 310. The synchronous rotation of the two threaded tubes 308 is controlled by the sprocket 309 and the chain. The position of the adjusting frame 305 is adjusted so that when the sliding wheel 306 contacts the support slide plate 302, the two clamping pads 207 are tightly pressed together, and the pressure sensor 205 can detect the pressure value. Through the rotary chain drive, the control device moves, thus adjusting the position of the two... The clamping pads 207 move to the upper and lower sides of the film, and the sliding wheel 306 is squeezed by the support slide plate 302, causing one end of the hinge plate 301 to move upward and the other end of the hinge plate 301 to squeeze the pull rod 303 downward. The pull rod 303 drives the pressure plate 206 to move downward, so that the two clamping pads 207 are tightly squeezed on the film surface, locking and fixing the film and stretching the film laterally. When the film suddenly falls off or is not properly clamped, the pressure sensor 205 changes its value. After the value becomes abnormal, the staff is notified in time to handle the problem and reduce the production of defective products.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A locking device for a transverse film stretching machine, comprising a fixing frame (1), characterized in that: The surface of the fixed frame (1) is provided with a locking mechanism (2), which includes a positioning wheel (201), a fixed base (202), a pressure sensor (205) and a pressure plate (206). The top of the fixed frame (1) is provided with a pressing mechanism (3), which includes a hinge plate (301), a support slide plate (302), a pull rod (303) and an adjustment frame (305). The two ends of the pull rod (303) are rotatably connected to the hinge plate (301) and the pressure plate (206) respectively.

2. The locking device for a transverse film stretching machine according to claim 1, characterized in that: The positioning wheel (201) is rotatably connected to the fixed frame (1), and the surface of the positioning wheel (201) is slidably connected to the bottom of the film stretching machine. The middle part of the fixed frame (1) is assembled and connected to the rotating chain of the film stretching machine by bolts.

3. The locking device for a transverse film stretching machine according to claim 1, characterized in that: The fixed base (202) has a sliding block (203) slidably connected inside, and the top of the pressure sensor (205) is in contact with the sliding block (203). The pressure plate (206) and the sliding block (203) are both fixedly connected with clamping pads (207) on the side that is in contact with each other. The fixed frame (1) has a sliding groove (209) in the middle.

4. The locking device for a transverse film stretching machine according to claim 3, characterized in that: The bottom end of the fixed base (202) is fixedly connected to the fixed frame (1), the pressure sensor (205) is fixed inside the fixed base (202), a buffer pad (204) is fixedly connected inside the fixed base (202), and the top end of the buffer pad (204) is fixedly connected to the sliding block (203).

5. The locking device for a transverse film stretching machine according to claim 3, characterized in that: The sliding groove (209) is slidably connected to a positioning rod (208), and the positioning rod (208) is fixedly connected to the pressure plate (206). The surface of the positioning rod (208) is fixedly connected to two positioning plates (210). Each positioning plate (210) is rotatably connected to a limiting wheel (211), and each limiting wheel (211) is slidably connected to the fixing frame (1).

6. The locking device for a transverse film stretching machine according to claim 1, characterized in that: The surface of the fixed frame (1) is rotatably connected to a return spring (304), and the top of the return spring (304) is hinged to the hinge plate (301). The interior of the adjusting frame (305) is rotatably connected to a sliding wheel (306) that is adapted to the supporting slide plate (302).

7. The locking device for a transverse film stretching machine according to claim 1, characterized in that: The surface of the adjusting frame (305) is fixedly connected to two threaded rods (307), and each threaded rod (307) is threadedly connected to a threaded tube (308), and each threaded tube (308) is rotatably connected to the hinge plate (301).

8. The locking device for a transverse film stretching machine according to claim 7, characterized in that: Each of the threaded tubes (308) is fixedly connected to a sprocket (309) on its surface, and the two sprockets (309) are connected by a chain drive. Each of the threaded tubes (308) is fixedly connected to a hexagonal ring (310) at its top end.

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