High strength chain tong

Abstract

The utility model discloses a high strength chain nippers, including nipper seat, slider assembly and open and close subassembly, slider assembly includes upper slider, lower slider and chain link, and upper slider and lower slider are opposite to set along vertical direction, and the corresponding position of upper slider and lower slider all are commonly provided with a pair of chain link pin, and chain link is sleeved in the central position of chain link pin, and the upper end of chain link pin is passed through the assembly hole of nipper seat corresponding to open, and is locked by anti -rotation nut screwing, realizes the fixed connection of slider assembly and nipper seat, and the inside of upper slider and lower slider all is equipped with steel core, and steel core is as base body and forms the support to slider, the utility model discloses through adding steel core in the inside of slider as the support base body, makes slider stress more evenly, and improves its impact resistance and structural strength, avoids the problem that single plastic slider of transmission is easy to break, makes high strength chain nippers more wear -resisting and durable under different load working conditions.

Description

Technical Field

[0001] This utility model relates to the field of film stretching production lines, specifically a high-strength chain clip. Background Technology

[0002] In the fields of film production, printing, and lamination, chain clamps are the core clamping and transmission components of the production line. Their operational reliability, service life, and adaptability directly affect production efficiency and product quality.

[0003] Traditional chain clamp slider assemblies are mostly made of a single piece of plastic material. Plastic material itself is brittle and lacks an effective internal support structure. As a result, the slider is subjected to significant stress concentration during long-term transmission tension, guide rail friction, and clamping force. Especially under high-frequency operation, load fluctuation, or slight impact conditions, it is prone to failure problems such as side wall cracking and end breakage. This not only shortens the service life of the chain clamp, but also requires frequent shutdowns to replace the slider, which seriously affects the continuous operation efficiency of the production line.

[0004] In addition, in the opening and closing components of traditional chain clamps, the spring and the coiled pin are mostly in direct contact. During the frequent opening and closing of the chain clamp, continuous frictional wear will occur between the end of the spring and the coiled pin, which will cause the spring to be prone to deformation, fatigue and breakage, thus affecting the stability and accuracy of the chain clamp's clamping action. Utility Model Content

[0005] The purpose of this invention is to provide a high-strength chain clip to solve the problems of high slider brittleness and large wear between the spring and the coiled pin mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-strength chain clamp, comprising a clamp base, a slider assembly, and an opening and closing assembly. The slider assembly includes an upper slider, a lower slider, and chain links. The upper slider and the lower slider are arranged opposite each other in the vertical direction, and a pair of chain link pins are passed through corresponding positions of the upper slider and the lower slider. The chain link is fitted into the center position of the chain link pin. The upper end of the chain link pin passes through the corresponding mounting hole opened in the clamp base and is locked by screwing in an anti-rotation nut, thereby realizing the fixed connection between the slider assembly and the clamp base. The upper slider and the lower slider both have a steel core inside, and the steel core serves as a base to support the slider.

[0007] Preferably, the opening and closing assembly includes a pair of clamp handles rotatably mounted on the clamp base by a clamp handle shaft and a pair of spring sleeves rotatably mounted on the clamp base by an anti-rotation pin. The side wall of each clamp handle has a pin hole opened laterally, and a coiled pin passes through the pin hole with both ends extending out of the side wall of the clamp handle. The spring sleeve is hollow inside and contains a spring. One end of the spring abuts against the inner wall of the spring sleeve, and the other end is fitted with a spring washer. The side wall of the spring sleeve has a sliding hole adapted to the coiled pin, and the coiled pin passes through it and abuts against the spring washer, so as to synchronously drive the spring washer to compress or release the spring as the clamp handle rotates.

[0008] Preferably, the anti-rotation pin is fitted with a first wear-resistant sleeve at the mating part with the clamp seat, and the clamp handle shaft is fitted with a second wear-resistant sleeve at the mating part with the clamp handle.

[0009] Preferably, the sidewalls of the clamp handle shaft and the anti-rotation pin are radially provided with insertion holes, and the clamp seat is provided with matching limiting holes at the positions of the insertion holes. A cotter pin is sequentially passed through the limiting holes and the insertion holes and locked in place to achieve axial positioning of the clamp handle shaft and the anti-rotation pin on the clamp seat.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention adds a steel core inside the slider as a support base, making the slider more evenly stressed and improving its impact resistance and structural strength. It avoids the problem of easy breakage of a single plastic slider in transmission, making the high-strength chain clip more wear-resistant and durable under different load conditions. In addition, a spring washer is added inside the spring sleeve of the opening and closing component to isolate the direct friction between the spring and the coiled pin, reducing the wear and loss of the spring, thereby improving the operational reliability and service life of the high-strength chain clip. Attached Figure Description

[0011] Figure 1 This is a first-view perspective three-dimensional structural diagram of the present invention; Figure 2 This is a second-view perspective three-dimensional structural diagram of the present invention; Figure 3 This is a schematic diagram of the exploded three-dimensional structure of this utility model; Figure 4 This is a three-dimensional structural diagram of the upper slider, lower slider, and steel core of this utility model.

[0012] In the diagram: 1. Clamp base; 2. Upper slider; 3. Lower slider; 4. Chain link pin; 5. Anti-rotation nut; 6. Chain link; 7. Spring sleeve; 8. Clamp handle small shaft; 9. Clamp handle; 10. First wear-resistant sleeve; 11. Spring; 12. Anti-rotation pin; 13. Second wear-resistant sleeve; 14. Spring washer; 15. Coil pin; 16. Cotter pin; 17. Steel core. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-3 This utility model provides a technical solution: a high-strength chain clamp, including a clamp base 1, a slider assembly, and an opening and closing assembly. The slider assembly includes an upper slider 2, a lower slider 3, and chain links 6. The upper slider 2 and the lower slider 3 are arranged opposite each other in the vertical direction, and a pair of chain link pins 4 are passed through corresponding positions of the upper slider 2 and the lower slider 3. The chain link 6 is fitted into the center position of the chain link pin 4. The upper end of the chain link pin 4 passes through the corresponding assembly hole opened in the clamp base 1 and is locked by screwing in an anti-rotation nut 5, thereby realizing the fixed connection between the slider assembly and the clamp base 1. The outer walls of the upper slider 2 and the lower slider 3 are provided with concave track structures. The cross-sectional shape and size of the concave track are adapted to the guide rail of the production line. When the high-strength chain clamp is running, the guide rail is embedded in the concave track and forms a sliding fit, which can effectively limit the lateral displacement of the high-strength chain clamp along the running direction, avoid the high-strength chain clamp from shifting or shaking, and thus ensure the positional stability of the high-strength chain clamp when clamping the film.

[0015] In practical applications, the high-strength chain clip transmits power by adapting to the external transmission mechanism of the production line through a slider assembly. Chain link 6 engages or snaps with the external transmission mechanism (existing technology chain disc). When the external transmission mechanism is running, it can directly drive chain link 6 to move synchronously, thereby driving the entire high-strength chain clip to run smoothly along the preset path of the production line.

[0016] Please see Figure 4 Both the upper slider 2 and the lower slider 3 have a steel core 17 inside, which serves as a base to support the upper slider 2 and the lower slider 3. As the load-bearing components of the high-strength chain clamp, the upper slider 2 and the lower slider 3 must withstand the tension of the chain link 6, the friction of the guide rail, and the force exerted when clamping the film over a long period. Traditional sliders are mostly made of single plastic or light alloy materials, which are prone to failure such as sidewall cracking and end breakage under high-frequency operation, heavy load, or sudden impact conditions. The steel core 17, as an internal base, forms a composite structure with the slider body, which can improve the slider's tensile, bending, and impact resistance, avoiding damage caused by insufficient structural strength during long-term use and extending the overall service life of the high-strength chain clamp.

[0017] During the operation of the high-strength chain clamp, the relative movement between the clamp handle 9 and the slider assembly in the opening and closing components can be precisely controlled by the magnetic force of the external magnetic clamp opener and clamp closeer configured on the production line. When the magnetic clamp opener generates magnetic force to attract the clamp handle 9, the clamp handle 9 rotates around the clamp handle shaft 8 and pushes the spring pad 14 to compress the spring 11 through the coiled pin 15, and the clamping mouth of the high-strength chain clamp opens to insert or release the film; when the magnetic clamp closeer stops working or switches the direction of magnetic force, the spring 11 returns to its original position and drives the clamp handle 9 to rotate in the opposite direction through the spring pad 14 and the coiled pin 15, and the clamping mouth closes to clamp the film, thereby realizing the reliable clamping and releasing action of the high-strength chain clamp on the film.

[0018] Please see Figures 1-3 The opening and closing assembly includes a pair of clamp handles 9 rotatably mounted on the clamp base 1 by the clamp handle shaft 8 and a pair of spring sleeves 7 rotatably mounted on the clamp base 1 by the anti-rotation pin 12, forming a symmetrical layout to ensure the synchronicity and smoothness of the opening and closing action.

[0019] The mating part of the anti-rotation pin 12 and the clamp seat 1 is equipped with a first wear-resistant sleeve 10, and the mating part of the clamp handle shaft 8 and the clamp handle 9 is equipped with a second wear-resistant sleeve 13. The first wear-resistant sleeve 10 and the second wear-resistant sleeve 13 effectively prevent the shaft components from directly rubbing against the clamp seat 1, reducing wear and loss. Especially under high-frequency opening and closing and long-term operation conditions, this extends the service life of the opening and closing components and reduces maintenance and replacement costs. The side walls of the clamp handle shaft 8 and the anti-rotation pin 12 are radially provided with insertion holes. The clamp seat 1 is provided with matching limiting holes at the corresponding positions of the insertion holes. The cotter pins 16 are sequentially passed through the limiting holes and inserted holes and locked in place, thereby achieving axial limiting of the clamp handle shaft 8 and the anti-rotation pin 12 on the clamp seat 1. This effectively prevents the clamp handle shaft 8 and the anti-rotation pin 12 from axially moving during high-speed operation or frequent opening and closing, ensuring precise and controllable opening and closing actions and avoiding clamping deviations caused by component displacement.

[0020] The side wall of the clamp handle 9 has a pin hole along the transverse direction. The coiled pin 15 passes through the pin hole and extends out of the side wall of the clamp handle 9 at both ends. The spring sleeve 7 is hollow inside and contains a spring 11. One end of the spring 11 abuts against the inner wall of the spring sleeve 7, and the other end is equipped with a spring washer 14. The spring washer 14 makes the force exerted by the coiled pin 15 on the spring 11 more even, avoiding deformation or fatigue failure caused by localized force concentration on the spring 11, and at the same time buffering the impact force during the opening and closing process. The side wall of the spring sleeve 7 has a sliding hole adapted to the coiled pin 15. The coiled pin 15 passes through the hole and abuts against the spring washer 14, so that the spring washer 14 is synchronously driven to compress or release the spring 11 as the clamp handle 9 rotates.

[0021] This application adds a steel core 17 inside the slider as a support base, which makes the slider more evenly stressed and improves its impact resistance and structural strength. It avoids the problem of easy breakage of a single plastic slider in transmission, making the high-strength chain clip more wear-resistant and durable under different load conditions. In addition, a spring pad 14 is added inside the spring sleeve 7 of the opening and closing component to isolate the direct friction between the spring 11 and the coiled pin 15, reducing the wear and loss of the spring 11, thereby improving the operational reliability and service life of the high-strength chain clip.

[0022] The high-strength chain clamp of this application can be applied to various thin film stretching processes. Those skilled in the art can refer to the installation relationship between the chain clamp assembly and the chain in the chain conveying device in Chinese patent document CN116100715A.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength chain clamp, comprising a clamp base (1), a slider assembly, and an opening / closing assembly, characterized in that: The slider assembly includes an upper slider (2), a lower slider (3), and a link (6). The upper slider (2) and the lower slider (3) are arranged opposite each other in the vertical direction, and a pair of link pins (4) are provided at corresponding positions of the upper slider (2) and the lower slider (3). The link (6) is fitted into the center of the link pin (4). The upper end of the link pin (4) passes through the corresponding assembly hole of the clamp seat (1) and is locked by screwing in the anti-rotation nut (5) to realize the fixed connection between the slider assembly and the clamp seat (1). The upper slider (2) and the lower slider (3) are both provided with steel cores (17), and the steel cores (17) serve as the base to support the slider.

2. The high-strength chain clamp according to claim 1, characterized in that: The opening and closing assembly includes a pair of clamp handles (9) rotatably mounted on the clamp base (1) by a clamp handle shaft (8) and a pair of spring sleeves (7) rotatably mounted on the clamp base (1) by an anti-rotation pin (12). The side wall of the clamp handle (9) is provided with a pin hole along the transverse direction. A coiled pin (15) passes through the pin hole and extends out of the side wall of the clamp handle (9) at both ends. The spring sleeve (7) is hollow inside and contains a spring (11). One end of the spring (11) abuts against the inner wall of the spring sleeve (7), and the other end is equipped with a spring pad (14). The side wall of the spring sleeve (7) is provided with a sliding hole that matches the coiled pin (15). The coiled pin (15) passes through the hole and abuts against the spring pad (14) so ​​that the spring pad (14) is synchronously driven to compress or release the spring (11) as the clamp handle (9) rotates.

3. A high-strength chain clamp according to claim 2, characterized in that: The anti-rotation pin (12) is fitted with a first wear-resistant sleeve (10) at the mating part with the clamp seat (1), and the clamp handle shaft (8) is fitted with a second wear-resistant sleeve (13) at the mating part with the clamp handle (9).

4. A high-strength chain clamp according to claim 2, characterized in that: Both the small shaft of the clamp handle (8) and the anti-rotation pin (12) have radial insertion holes on their side walls. The clamp seat (1) has matching limiting holes corresponding to the positions of the insertion holes. The cotter pin (16) passes through the limiting holes and the insertion holes in sequence and is locked in place, thereby achieving axial positioning of the small shaft of the clamp handle (8) and the anti-rotation pin (12) on the clamp seat (1).

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