A TDO chain clamp that prevents EVA raw materials from sticking

Abstract

The present invention discloses a TDO chain clamp for preventing EVA raw materials from sticking. The key technical features of the chain clamp are as follows: it comprises a left clamp arm and a right clamp arm, wherein a shaft is fixed in the right clamp arm, and the left clamp arm is rotatably connected to the outside of the shaft. A first torsion spring is sleeved on the outside of the shaft, one end of the first torsion spring being fixed to the left clamp arm, and the other end of the first torsion spring being fixed to the right clamp arm. The chain clamp further comprises: a clamping plate fixed to the end of the left clamp arm; a clamping structure provided on the clamping plate for compressing the EVA strip; a compression structure cooperating with the clamping structure for compression; a linkage structure for driving the compression structure when the left and right clamp arms are closed; and an auxiliary structure provided on the clamping plate for assisting in declamping the EVA strip. The TDO chain clamp for preventing EVA raw materials from sticking has an excellent compression and fixation effect on the EVA strip and facilitates declamping.

Description

Technical Field

[0001] The invention relates to the field of film production, and in particular to a TDO chain clamp for preventing EVA raw materials from sticking. Background Art

[0002] Film sheet stretching and orientation are categorized into uniaxial and biaxial orientation. Uniaxially oriented polymer films exhibit significantly improved performance in the oriented direction, while performance in the unoriented direction, such as tear resistance, is reduced. Biaxial orientation involves orienting a polymer film in two mutually perpendicular directions, significantly improving the performance of the film in both directions. Biaxially oriented films can be produced with either isotropic or anisotropic properties by varying the process conditions. The production process for biaxially oriented films significantly influences the film's properties.

[0003] During the biaxial stretching process, both sides of the EVA tape need to be clamped with TDO clip chains, so clip chains are used for fixation. However, there are some disadvantages when using TDO clip chains for clamping, such as: the EVA tape has a large thermal viscosity, which easily leads to sticking. Summary of the Invention

[0004] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a TDO chain clamp that prevents EVA raw materials from sticking, so as to solve the problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A TDO chain clamp for preventing EVA raw materials from sticking, comprising a left clamp arm and a right clamp arm, wherein a rod shaft is fixed in the right clamp arm, and the left clamp arm is rotatably connected to the outside of the rod shaft, and a first torsion spring is sleeved on the outside of the rod shaft, wherein one end of the first torsion spring is fixed to the left clamp arm, and the other end of the first torsion spring is fixed to the right clamp arm, and further comprising:

[0007] a splint fixed to the end side of the left clamp arm;

[0008] A clamping structure provided at the clamping plate for compressing the EVA strip;

[0009] a pressing structure that cooperates with the clamping structure to perform pressing;

[0010] A linkage structure for driving the clamping structure to move when the left clamping arm and the right clamping arm are closed;

[0011] And an auxiliary structure is arranged at the clamping plate for assisting the EVA strip to be unclamped.

[0012] By adopting the above technical solution, the TDO chain clamp that prevents EVA raw materials from sticking has a good compression and fixing effect on the EVA strip, and can facilitate material removal; when this equipment is used, the first torsion spring outside the rod shaft can be used to make the left clamping arm and the right clamping arm close together for clamping, and by utilizing the coordination of the clamping structure and the compression structure at the clamping plate, the EVA strip can be effectively fixed, and the auxiliary structure can assist in the removal of the EVA strip.

[0013] Preferably, the clamping structure includes a pressure plate, a groove, a spring, a guide hole and a guide column. The pressure plate is arranged on the side of the clamping plate close to the right clamping arm, the groove is opened in the clamping plate, the spring is connected between the bottom of the groove and the pressure plate, the guide hole is opened at the bottom of the groove, the guide column is fixed on the pressure plate, and the guide column and the guide hole cooperate with each other.

[0014] By adopting the above technical solution, when the left clamping arm and the right clamping arm approach each other, the spring in the groove will drive the pressure plate closer to the right clamping arm, thereby further improving the stability of fixing the EVA strip. By relying on the cooperation of the guide column and the guide hole, the reliability of the clamping structure can be further improved.

[0015] Preferably, the clamping structure includes several pressure strips, avoidance grooves, a first support shaft, a shoulder block, a swing block, a convex pressure portion, a second torsion spring and a notch, several pressure strips are respectively fixed on one side of the right clamp arm close to the clamp plate, the avoidance groove is opened in the right clamp arm, the first support shaft is rotatably connected in the avoidance groove, the shoulder block is fixed on the outside of the first support shaft, the swing block is threadedly connected to the outside of the first support shaft, the convex pressure portion is integrally formed on the swing block, the second torsion spring is sleeved on the outside of the first support shaft, one end of the second torsion spring is fixed on the shoulder block, the other end of the second torsion spring is fixed on the swing block, and the notch is opened at the end of the right swing arm for the convex pressure portion to rotate out.

[0016] By adopting the above technical solution, firstly, the pressure strip can reduce the pressing contact area. In addition, the second torsion spring sleeved on the outside of the first support shaft can push the first support shaft to have a rotation tendency. When the pendulum block outside the first support shaft rotates, it can drive the pressing convex part to rotate, thereby achieving firm pressing of the EVA strip.

[0017] Preferably, the linkage structure includes a worm wheel, a worm, a second support shaft, a first pulley, a second pulley and a belt, the worm wheel is fixed to the outside of the rod shaft, the worm is fixed on the second support shaft, the second support shaft is rotatably connected in the avoidance groove, the first pulley is fixed to the outside of the second support shaft, the second pulley is fixed to the outside of the first support shaft, and the belt drive is connected to the outside of the first pulley and the second pulley.

[0018] By adopting the above technical solution, when the left clamping arm and the right clamping arm are closed under the operation of the first torsion spring, the worm gear outside the rod shaft can be driven to rotate, thereby driving the worm to rotate, and then driving the second support shaft to rotate. Through the transmission of the belt outside the first pulley and the second pulley, the first support shaft can be driven to rotate, thereby cooperating with the second torsion spring to promote the rotation of the pendulum block, so that the pressure bulge on the pendulum block rotates out of the slot, driving the clamping structure to be fully tightened.

[0019] Preferably, the right clamping arm is provided with an inspection groove on a side away from the left clamping arm, and a fixing plate is fixed to the inspection groove by screws and clamping blocks.

[0020] By adopting the above technical solution, the production and subsequent maintenance of the chain clamp can be facilitated by utilizing the inspection groove and the fixing plate.

[0021] Preferably, the auxiliary structure includes a first perforation, a second perforation, a built-in pipeline and a rotary joint, the first perforation is opened in the splint, the second perforation is opened in the pressure plate, the built-in pipeline is embedded in the first perforation, and one end of the rotary joint is fixed to the built-in pipeline.

[0022] By adopting the above technical solution, lubricating or cooling liquid can be injected into the EVA tape between the pressing plate and the pressure strip by utilizing the auxiliary structure, thereby improving the flexibility of de-clamping and the anti-sticking property.

[0023] Preferably, the pressing plate and the plurality of pressing strips are respectively provided with a layer of Teflon coating on the sides close to each other.

[0024] By adopting the above technical solution, the Teflon coating on the pressing plate and the pressing strip can improve the anti-sticking effect of the pressing plate and the pressing strip.

[0025] Preferably, a connecting plate is welded and fixed to the outside of the right clamping arm, and a plurality of waist-shaped holes and threaded holes are opened on the connecting plate.

[0026] By adopting the above technical solution, the external fixation of the chain clip can be facilitated by utilizing the connecting plate and the waist-shaped holes, threaded holes, etc. thereon.

[0027] In summary, the present invention mainly has the following beneficial effects:

[0028] This TDO chain clamp, which prevents EVA raw materials from sticking, has a good compression and fixing effect on the EVA strip and can facilitate the removal of the material. When this equipment is used, the first torsion spring outside the rod shaft can be used to make the left clamping arm and the right clamping arm close together for clamping. By utilizing the coordination of the clamping structure and the compression structure at the clamping plate, the EVA strip can be effectively fixed, and the auxiliary structure can assist in the removal of the EVA strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1This is one of the structural diagrams of the present invention;

[0030] Figure 2 This is the second structural diagram of the present invention;

[0031] Figure 3 It is a cross-sectional view of the structure of the present invention;

[0032] Figure 4 for Figure 3 A magnified view of point A in the figure;

[0033] Figure 5 for Figure 3 Enlarged view of point B in .

[0034] Figure numerals: 1. left clamping arm; 2. right clamping arm; 21. rod shaft; 22. first torsion spring; 11. clamping plate; 3. clamping structure; 4. pressing structure; 5. linkage structure; 6. auxiliary structure; 31. pressure plate; 32. groove; 33. spring; 34. guide hole; 35. guide column; 41. pressure strip; 42. avoidance groove; 43. first support shaft; 44. shoulder; 45. pendulum block; 46. convex pressure part; 47. second torsion spring; 48. notch; 51. worm gear; 52. worm; 53. second support shaft; 54. first pulley; 55. second pulley; 56. belt; 23. inspection groove; 24. fixing plate; 61. first through-hole; 62. second through-hole; 63. built-in pipeline; 64. swivel joint; 26. connecting plate; 261. waist-shaped hole; 262. threaded hole. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] refer to Figure 1 、 Figure 2 and Figure 3, a TDO chain clamp for preventing EVA raw materials from sticking, includes a left clamp arm 1 and a right clamp arm 2, a rod shaft 21 is fixed in the right clamp arm 2, the left clamp arm 1 is rotatably connected to the outside of the rod shaft 21, and a first torsion spring 22 is sleeved on the outside of the rod shaft 21, one end of the first torsion spring 22 is fixed to the left clamp arm 1, and the other end of the first torsion spring 22 is fixed to the right clamp arm 2, and also includes: a clamping plate 11 fixed to the end side of the left clamp arm 1; a clamping structure 3 for compressing the EVA strip arranged at the clamping plate 11; a clamping structure 4 for cooperating with the clamping structure 3 for compression; a linkage structure 5 for driving the clamping structure 4 to move when the left clamp arm 1 and the right clamp arm 2 are closed; and an auxiliary structure 6 for assisting the EVA strip to be unclamped arranged at the clamping plate 11.

[0037] refer to Figure 1 、 Figure 2 and Figure 3 The TDO chain clamp that prevents EVA raw materials from sticking has a good compression and fixing effect on the EVA strip, and can facilitate the removal of the material; when this equipment is used, the first torsion spring 22 outside the rod shaft 21 can be used to make the left clamping arm 1 and the right clamping arm 2 close together for clamping. By utilizing the cooperation of the clamping structure 3 and the compression structure 4 at the clamping plate 11, the EVA strip can be effectively fixed, and the auxiliary structure 6 can be used to assist in the removal of the EVA strip.

[0038] refer to Figure 3 and Figure 4 , the clamping structure 3 includes a pressure plate 31, a groove 32, a spring 33, a guide hole 34 and a guide column 35, the pressure plate 31 is arranged on the side of the clamping plate 11 close to the right clamping arm 2, the groove 32 is opened in the clamping plate 11, the spring 33 is connected between the bottom of the groove 32 and the pressure plate 31, the guide hole 34 is opened at the bottom of the groove 32, the guide column 35 is fixed on the pressure plate 31, and the guide column 35 and the guide hole 34 cooperate with each other; when the left clamping arm 1 and the right clamping arm 2 approach, the spring 33 in the groove 32 will drive the pressure plate 31 to approach the right clamping arm 2, thereby further improving the stability of fixing the EVA strip, and relying on the cooperation of the guide column 35 and the guide hole 34, the reliability of the clamping structure 3 can be further improved.

[0039] refer to Figure 3 、 Figure 4 and Figure 5, the clamping structure 4 includes a plurality of pressure strips 41, an avoidance groove 42, a first support shaft 43, a shoulder 44, a swing block 45, a convex pressure portion 46, a second torsion spring 47 and a notch 48, wherein the plurality of pressure strips 41 are respectively fixed to one side of the right clamping arm 2 close to the clamping plate 11, the avoidance groove 42 is opened in the right clamping arm 2, the first support shaft 43 is rotatably connected to the avoidance groove 42, the shoulder 44 is fixed to the outside of the first support shaft 43, the swing block 45 is threadedly connected to the outside of the first support shaft 43, the convex pressure portion 46 is integrally formed on the swing block 45, and the second The torsion spring 47 is sleeved on the outside of the first support shaft 43, one end of the second torsion spring 47 is fixed on the shoulder 44, and the other end of the second torsion spring 47 is fixed on the pendulum block 45. The slot 48 is opened at the end of the right pendulum arm for the convex pressure part 46 to rotate out; first, the pressure strip 41 can reduce the pressing contact area. In addition, the second torsion spring 47 sleeved on the outside of the first support shaft 43 can push the first support shaft 43 to have a rotation tendency. When the pendulum block 45 outside the first support shaft 43 rotates, it can drive the convex pressure part to rotate, thereby achieving firm compression of the EVA strip.

[0040] refer to Figure 3 、 Figure 4 and Figure 5 The linkage structure 5 includes a worm wheel 51, a worm 52, a second support shaft 53, a first pulley 54, a second pulley 55 and a belt 56. The worm wheel 51 is fixed to the outside of the rod shaft 21, the worm 52 is fixed to the second support shaft 53, the second support shaft 53 is rotatably connected in the avoidance groove 42, the first pulley 54 is fixed to the outside of the second support shaft 53, the second pulley 55 is fixed to the outside of the first support shaft 43, and the belt 56 is connected to the first pulley 54 and the second pulley The outside of the wheel 55; when the left clamping arm 1 and the right clamping arm 2 are closed under the operation of the first torsion spring 22, the worm gear 51 on the outside of the rod shaft 21 can be driven to rotate, thereby driving the worm 52 to rotate, and then driving the second support shaft 53 to rotate. Through the transmission of the belt 56 outside the first pulley 54 and the second pulley 55, the first support shaft 43 can be driven to rotate, thereby cooperating with the second torsion spring 47 to promote the rotation of the pendulum block 45, so that the pressing protrusion on the pendulum block 45 is rotated out of the slot 48, and the clamping structure 4 is driven to be fully tightened.

[0041] refer to Figure 1 and Figure 2 The right clamp arm 2 is provided with an inspection groove 23 on the side away from the left clamp arm 1, and a fixing plate 24 is fixed to the inspection groove 23 by screws and blocks; the inspection groove 23 and the fixing plate 24 can facilitate the production and subsequent maintenance of the chain clamp.

[0042] refer to Figure 3 、 Figure 4 and Figure 5, wherein the auxiliary structure 6 includes a first through-hole 61, a second through-hole 62, a built-in pipeline 63 and a rotary joint 64, the first through-hole 61 is provided in the clamping plate 11, the second through-hole 62 is provided in the pressing plate 31, the built-in pipeline 63 is embedded in the first through-hole 61, and one end of the rotary joint 64 is fixed to the built-in pipeline 63; by utilizing the auxiliary structure 6, lubricant or coolant can be injected into the EVA tape between the pressing plate 31 and the pressure strip 41 to improve the flexibility and anti-stickiness of the unclamping; wherein the pressing plate 31 and the plurality of pressure strips 41 are respectively provided with a layer of Teflon coating on the side close to each other, and the Teflon coating on the pressing plate 31 and the pressure strip 41 can improve the anti-stickiness effect of the pressing plate 31 and the pressure strip 41.

[0043] refer to Figure 1 and Figure 2 A connecting plate 26 is welded and fixed to the outside of the right clamp arm 2, and a plurality of waist-shaped holes 261 and threaded holes 262 are opened on the connecting plate 26; the connecting plate 26 and the waist-shaped holes 261, threaded holes 262, etc. thereon can facilitate the external fixation of the chain clip.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A TDO chain clamp for preventing EVA raw materials from sticking, comprising a left clamp arm (1) and a right clamp arm (2), wherein a rod shaft (21) is fixed in the right clamp arm (2), the left clamp arm (1) is rotatably connected to the outside of the rod shaft (21), a first torsion spring (22) is sleeved on the outside of the rod shaft (21), one end of the first torsion spring (22) is fixed to the left clamp arm (1), and the other end of the first torsion spring (22) is fixed to the right clamp arm (2), characterized in that: Also includes: A clamping plate (11) fixed to the end side of the left clamping arm (1); A clamping structure (3) provided at the clamping plate (11) for compressing the EVA strip; a pressing structure (4) that cooperates with the clamping structure (3) to perform pressing; A linkage structure (5) for driving the pressing structure (4) to move when the left clamping arm (1) and the right clamping arm (2) are closed; and an auxiliary structure (6) provided at the clamping plate (11) for assisting the EVA strip in detaching from the clamp; The clamping structure (3) includes a pressure plate (31), a groove (32), a spring (33), a guide hole (34) and a guide column (35), wherein the pressure plate (31) is arranged on a side of the clamping plate (11) close to the right clamping arm (2), the groove (32) is provided in the clamping plate (11), the spring (33) is connected between the bottom of the groove (32) and the pressure plate (31), the guide hole (34) is provided at the bottom of the groove (32), the guide column (35) is fixed on the pressure plate (31), and the guide column (35) and the guide hole (34) cooperate with each other; The clamping structure (4) comprises a plurality of pressure strips (41), an avoidance groove (42), a first support shaft (43), a shoulder (44), a swing block (45), a convex pressure portion (46), a second torsion spring (47) and a notch (48), wherein the plurality of pressure strips (41) are respectively fixed on one side of the right clamping arm (2) close to the clamping plate (11), the avoidance groove (42) is provided in the right clamping arm (2), the first support shaft (43) is rotatably connected to the avoidance groove (42), and the shoulder (44) is The swing block (45) is fixed to the outside of the first support shaft (43), the swing block (45) is threadedly connected to the outside of the first support shaft (43), the convex pressure portion (46) is integrally formed on the swing block (45), the second torsion spring (47) is sleeved on the outside of the first support shaft (43), one end of the second torsion spring (47) is fixed to the shoulder (44), and the other end of the second torsion spring (47) is fixed to the swing block (45), and the notch (48) is opened at the end of the right swing arm for the convex pressure portion (46) to rotate out; The auxiliary structure (6) comprises a first through-hole (61), a second through-hole (62), a built-in pipeline (63) and a rotary joint (64); the first through-hole (61) is provided in the clamping plate (11); the second through-hole (62) is provided in the pressing plate (31); the built-in pipeline (63) is embedded in the first through-hole (61); and one end of the rotary joint (64) is fixed to the built-in pipeline (63).

2. The TDO chain clip for preventing EVA material from sticking according to claim 1, characterized in that: The linkage structure (5) comprises a worm wheel (51), a worm (52), a second support shaft (53), a first pulley (54), a second pulley (55) and a belt (56); the worm wheel (51) is fixed to the outside of the rod shaft (21); the worm (52) is fixed to the second support shaft (53); the second support shaft (53) is rotatably connected in the avoidance groove (42); the first pulley (54) is fixed to the outside of the second support shaft (53); the second pulley (55) is fixed to the outside of the first support shaft (43); and the belt (56) is transmission-connected to the outside of the first pulley (54) and the second pulley (55).

3. The TDO chain clip for preventing EVA material from sticking according to claim 2, characterized in that: The right clamping arm (2) is provided with an inspection groove (23) on a side facing away from the left clamping arm (1), and a fixing plate (24) is fixed to the inspection groove (23) by screws and a clamping block.

4. The TDO chain clip for preventing EVA material from sticking according to claim 1, characterized in that: The pressing plate (31) and the plurality of pressure strips (41) are respectively provided with a layer of Teflon coating on the sides close to each other.

5. The TDO chain clip for preventing EVA material from sticking according to claim 1, characterized in that: A connecting plate (26) is welded and fixed to the outside of the right clamping arm (2), and a plurality of waist-shaped holes (261) and threaded holes (262) are provided on the connecting plate (26).

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