CN115014943A - A copper foil tensile test device - Google Patents

Abstract

The invention discloses a copper foil tensile test device, comprising: a support part, a power part, an upper clamping part and a lower clamping part; the power part is arranged at the top end of the support part; the upper clamping part is arranged in the support part, and is connected with the power A tension sensor is arranged between the upper clamping part and the power part; the lower clamping part is fixed on the bottom of the supporting part and is opposite to the upper clamping part; the upper clamping part includes a first base, and the lower clamping part is The part includes a second base, a second fixed clamping block is fixed on the second base, a first fixed clamping block is fixed on the first base, and the clamping surfaces of the first fixed clamping block and the second fixed clamping block are located in the same vertical on a straight plane. The invention can prevent the dislocation of both ends of the copper foil after the clamping of the copper foil is completed, and a crease is formed at the clamping part of the copper foil, which affects the test result.

Description

A copper foil tensile test device

technical field

The invention relates to the technical field of copper foil tensile testing devices, in particular to a copper foil tensile testing device.

Background technique

In the production process of copper foil, it is necessary to use a tensile test device to perform a tensile test on the copper foil sample to analyze its tensile strength.

The existing tensile test device usually clamps the two ends of the copper foil to be tested by moving the two clamping blocks of the clamping device toward each other. However, the thickness of the copper foil is small and the hardness is low. This method is used to test the copper foil. The tensile force may cause the two ends of the copper foil to be dislocated, forming creases at the clamping place of the copper foil, thereby affecting the accuracy of the copper foil tensile test results.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a copper foil tensile test device to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present invention provides the following solutions: the present invention provides a copper foil tensile test device, comprising:

support;

a power part, arranged on the top end of the support part;

The upper clamping part is arranged in the support part and is connected with the power part in a driving manner, a tension sensor is arranged between the upper clamping part and the power part, and the upper clamping part includes a first base, The bottom end of the first base is fixed with a first fixing clamp block, a first sliding groove is opened on the bottom surface of the first base, and a first sliding block is slidably connected in the first sliding groove, and the first sliding block is slidably connected to the first sliding groove. One end of a sliding block protrudes from the first sliding slot and is fixedly connected with a first sliding clamping block, the first sliding clamping block and the first fixed clamping block are arranged opposite, and the first sliding block is drivingly connected There is a first clamping motor;

The lower clamping part is fixed on the bottom of the support part and is arranged opposite to the upper clamping part, the lower clamping part includes a second base, and the top of the second base is fixed with a second fixing clip The top surface of the second base is provided with a second chute, a second slider is slidably connected in the second chute, and one end of the second slider protrudes from the second chute and A second sliding clamping block is fixedly connected, the second sliding clamping block is arranged opposite to the second fixed clamping block, and the second sliding block is drivingly connected with a second clamping motor;

Wherein, the clamping surfaces of the first fixed clamping block and the second fixed clamping block are located on the same vertical plane.

Preferably, the support portion includes a bottom plate, and two support plates are fixedly connected to the top surface of the bottom plate, the two support plates are respectively located at two ends of the bottom plate, and the top ends of the two support plates are fixedly connected with A top plate, the power part is arranged on the top surface of the top plate, the first base is located between the bottom plate and the top plate, and the second base is fixed on the top surface of the bottom plate.

Preferably, the power part includes a lift motor fixed on the top surface of the top plate, the output shaft of the lift motor passes through the top plate and is fixed with a first screw, the first screw is rotatably connected to the top plate Between the top plate and the bottom plate, a third sliding block is threadedly connected to the first screw, the top surface and the bottom surface of the third sliding block are fixed with a horizontal plate, and the horizontal plate is sleeved on the first sliding block. On the outer side of a screw, two ends of the horizontal plate are provided with vertically arranged limit rods, the limit rods are slidably connected with the horizontal plate, and the two limit rods are arranged in parallel and with the first The axis of the screw rod is axially symmetrical, and the limit rod is fixedly connected between the top plate and the bottom plate.

Preferably, one end of the L-shaped plate is fixed on one side of the two horizontal plates, the other end of the L-shaped plate is horizontally arranged, and two limit posts are fixed on the bottom surface of the L-shaped plate. The limiting columns are respectively located on both sides of the L-shaped plate, the bottom ends of the limiting columns are fixed with a first limiting cap, the outer side walls of the limiting columns are sleeved with a first compression spring, and the The bottom end of the first compression spring is fixedly connected with the first limit cap, and the two limit posts are slidably connected with a first connecting plate, the first connecting plate is located above the first compression spring, so An overload protection mechanism is also arranged between the first connecting plate and the L-shaped plate.

Preferably, the tension sensor is fixed on the bottom surface of the first connecting plate, the second connecting plate is fixed on the bottom end of the tension sensor, and the first base is fixed on the second connecting plate. on the underside.

Preferably, the first clamping motor is fixed on the bottom surface of the second connecting plate, the output shaft of the first clamping motor is connected with a second screw through a coupling, and the second screw passes through into the first chute and parallel to the axis of the first chute, and the second screw is threadedly connected to the first slider.

Preferably, the second clamping motor is fixed on the top surface of the bottom plate, the output shaft of the second clamping motor is fixed with a third screw through the coupling, and the third screw The third screw is screwed into the second sliding slot and is arranged in parallel with the axis of the second sliding slot.

Preferably, the overload protection mechanism includes an installation box, the bottom wall of the installation box is provided with two vertical rods, and a third connecting plate is fixedly connected between the two vertical rods, and the third connecting plate is located in the installation box. In the box, a second compression spring is sleeved on the vertical rod, and the second compression spring is located between the third connecting plate and the inner side wall of the installation box, on the opposite two side walls of the installation box Two limit plates are passed through, and the two limit plates are symmetrically arranged. One end of the limit plate located on the outer side of the installation box is fixed with a limit piece, and a third compression spring is sleeved on the outer side of the limit plate. , the third compression spring is located between the limit piece and the outer side wall of the installation box, one end of the limit plate located in the installation box is provided with a groove, and the limit plate is opened with a groove a through hole, the through hole is located in the installation box, the top end of the vertical rod penetrates into the through hole, a cylinder is arranged between the two grooves, and the cylinder is located at one end of the installation box A second limit cap is fixedly connected, the second limit cap is located between the two grooves, the two vertical rods are fixed on the top surface of the first connecting plate, and the cylinder is fixed on the bottom surface of the L-shaped plate.

Preferably, flexible splints are fixedly fixed on the surfaces of the first fixed clamping block and the first sliding clamps, and a plurality of circular holes are formed on the opposite surfaces of the two flexible splints.

The present invention discloses the following technical effects:

In the present invention, when testing the tensile force of the copper foil, first place one end of the copper foil between the first fixed clamp block and the first sliding clamp block, and then drive the first clamping motor to drive the first slider in the first chute Then move the first sliding clamp block, clamp the copper foil between the first fixed clamp block and the first sliding clamp block, and then put the other end of the same ratio into the second fixed clamp block and the second sliding clamp. Between the blocks, the second clamping motor is driven so that the other end of the copper foil is clamped between the second fixed clamping block and the second sliding clamping block. The surfaces are located on the same vertical plane, and the positioning function of the first fixing block and the second fixing block prevents the two ends of the copper foil from being dislocated after the copper foil is clamped, and a crease is formed at the clamping place of the copper foil, which affects the test. result.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

1 is a front view of a copper foil tensile test device of the present invention;

Fig. 2 is the right side view of a kind of copper foil tensile test device of the present invention;

Fig. 3 is the structural representation of overload protection mechanism in the present invention;

Fig. 4 is the partial enlarged view of A place in Fig. 1;

Among them, 1. Tension sensor; 2. The first base; 3. The first fixed clamping block; 4. The first sliding block; 5. The first sliding clamping block; 6. The first clamping motor; 7. The second base; 8. Second fixed clamping block; 9. Second sliding block; 10. Second sliding clamping block; 11. Second clamping motor; 12. Bottom plate; 13. Support plate; 14. Top plate; 15. Lifting motor; 16 , the first screw; 17, the third slider; 18, the horizontal plate; 19, the limit rod; 20, the L-shaped plate; 21, the limit column; 22, the first limit cap; 23, the first compression spring; 24, the first connecting plate; 25, the second connecting plate; 26, the second screw; 27, the third screw; 28, the installation box; 29, the vertical rod; 30, the third connecting plate; 31, the second compression spring; 32, limit plate; 33, limit piece; 34, third compression spring; 35, cylinder; 36, second limit cap; 37, flexible splint.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

1-4, the present invention provides a copper foil tensile test device, including:

support;

The power part is arranged on the top end of the support part;

The upper clamping part is arranged in the supporting part and is connected with the power part. A tension sensor 1 is arranged between the upper clamping part and the power part. The upper clamping part includes a first base 2, and the bottom end of the first base 2 is fixed. A first fixed clamp 3 is connected, a first chute is opened on the bottom surface of the first base 2, a first sliding block 4 is slidably connected in the first sliding groove, and one end of the first sliding block 4 protrudes from the first sliding groove And a first sliding clamping block 5 is fixedly connected, the first sliding clamping block 5 is arranged opposite to the first fixed clamping block 3, and the first sliding block 4 is drivingly connected with a first clamping motor 6;

The lower clamping part is fixed on the bottom of the supporting part and is arranged opposite to the upper clamping part. The lower clamping part includes a second base 7 , and the top of the second base 7 is fixed with a second fixed clamping block 8 . 7 is provided with a second sliding slot on the top surface, and a second sliding block 9 is slidably connected in the second sliding slot. The second sliding clamp block 10 is arranged opposite to the second fixed clamp block 8, and the second sliding block 9 is connected with a second clamping motor 11; the second fixed clamp block 8 and the first fixed clamp block 3 are arranged correspondingly up and down;

Wherein, the clamping surfaces of the first fixed clamp block 3 and the second fixed clamp block 8 are located on the same vertical plane.

In this device, the top of the copper foil is first placed between the first fixed clamp block 3 and the first sliding clamp block 5, and the first clamp motor 6 is driven to drive the first slider 4 to move in the first chute, and then Drive the first sliding clamp block 5 to move, clamp the top of the copper foil between the first fixed clamp block 3 and the first sliding clamp block 5, and then put the other end of the copper foil into the second fixed clamp block 8 and the first sliding clamp block 5. Between the two sliding clamping blocks 10, the second clamping motor 11 is driven to drive the second sliding block 9 to move in the second chute, thereby driving the second sliding clamping block 10 to move to clamp the bottom end of the copper foil on the second sliding block 10. Between the fixed clamping block 8 and the second sliding clamping block 10, during this process, the copper foil needs to be kept as flat as possible to avoid errors in the test results caused by improper clamping.

To further optimize the solution, the support portion includes a bottom plate 12, two support plates 13 are fixedly connected to the top surface of the bottom plate 12, the two support plates 13 are respectively located at both ends of the bottom plate 12, and a top plate 14 is fixed between the top ends of the two support plates 13, The power part is arranged on the top surface of the top plate 14 , the first base 2 is located between the bottom plate 12 and the top plate 14 , and the second base 7 is fixed on the top surface of the bottom plate 12 .

To further optimize the solution, the power unit includes a lift motor 15 fixed on the top surface of the top plate 14, the output shaft of the lift motor 15 passes through the top plate 14 and is fixed with a first screw 16, and the first screw 16 is rotatably connected to the top plate 14 and the bottom plate 12. In between, the first screw 16 is threadedly connected with a third sliding block 17, the top surface and the bottom surface of the third sliding block 17 are fixed with a horizontal plate 18, the horizontal plate 18 is sleeved on the outer side of the first screw 16, and the horizontal plate The two ends of the 18 are provided with vertically arranged limit rods 19. The limit rods 19 are slidably connected to the horizontal plate 18. The two limit rods 19 are arranged in parallel and symmetrically arranged with the axis of the first screw 16 as the axis. 19 is fixed between the top plate 14 and the bottom plate 12 . The lifting motor 15 drives the first screw 16 to rotate, thereby driving the third sliding block 17 to rise, and the third sliding block 17 rises to drive the two horizontal plates 18 to rise.

Wherein, the top and bottom surfaces of the third slider 17 are fixed with a horizontal plate 18, in order to share the force generated in the test process inclined to the axis of the first screw 16 to the limit rod 19, so as to prevent the first screw 16 from being subjected to If the tilting force is too large, the first screw 16 will be damaged and the service life of the device will be prolonged.

To further optimize the solution, one end of the L-shaped plate 20 is fixedly connected to one side of the two horizontal plates 18, the other end of the L-shaped plate 20 is arranged horizontally, and the bottom surface of the L-shaped plate 20 is fixedly fixed with two limit posts 21. The columns 21 are located on both sides of the L-shaped plate 20 respectively. The bottom end of the limiting column 21 is fixed with a first limiting cap 22 , and the outer side wall of the limiting column 21 is sleeved with a first compression spring 23 . The bottom end of 23 is fixedly connected with the first limit cap 22, and the two limit posts 21 are slidably connected with a first connecting plate 24, the first connecting plate 24 is located above the first compression spring 23, and the first connecting plate 24 is connected to the L An overload protection mechanism is also arranged between the shaped plates 20 .

In a further optimized solution, the tension sensor 1 is fixed on the bottom surface of the first connecting plate 24 , the second connecting plate 25 is fixed on the bottom end of the tension sensor 1 , and the first base 2 is fixed on the bottom surface of the second connecting plate 25 .

The overload protection mechanism is arranged between the L-shaped plate 20 and the first connecting plate 24, which can prevent the tensile force sensor 1 from being damaged due to excessive tensile force during the testing process. The first limit cap 22 can prevent the first connecting plate from being damaged. 24 is completely separated from the limit post 21 .

To further optimize the solution, the first clamping motor 6 is fixedly connected to the bottom surface of the second connecting plate 25, the output shaft of the first clamping motor 6 is connected with a second screw 26 through a coupling, and the second screw 26 penetrates the second screw 26. A chute is arranged in parallel with the axis of the first chute, and the second screw 26 is threadedly connected with the first sliding block 4 .

Further optimized solution, the second clamping motor 11 is fixed on the top surface of the bottom plate 12, the output shaft of the second clamping motor 11 is fixedly connected with a third screw 27 through a coupling, and the third screw 27 penetrates into the second clamping motor 11. Inside the chute and parallel to the axis of the second chute, the third screw 27 is threadedly connected with the second sliding block 9 .

To further optimize the solution, the overload protection mechanism includes an installation box 28, two vertical rods 29 are pierced through the bottom wall of the installation box 28, and a third connecting plate 30 is fixed between the two vertical rods 29, and the third connecting plate 30 is located in the installation box. 28, a second compression spring 31 is sleeved on the vertical rod 29, and the second compression spring 31 is located between the third connecting plate 30 and the inner side wall of the installation box 28. Limiting plate 32, the two limiting plates 32 are symmetrically arranged, one end of the limiting plate 32 located on the outside of the installation box 28 is fixedly connected to the limiting piece 33, the outer side of the limiting plate 32 is sleeved with a third compression spring 34, the third compression spring 34 is located between the limit piece 33 and the outer side wall of the installation box 28, a groove is formed at one end of the limit plate 32 located in the installation box 28, and a through hole is opened on the limit plate 32, and the through hole is located in the installation box 28, The top end of the vertical rod 29 penetrates into the through hole, and a cylinder 35 is arranged between the two grooves. One end of the cylinder 35 located in the installation box 28 is fixed with a second limit cap 36, and the second limit cap 36 is located in the two grooves. In between, the two vertical rods 29 are fixed on the top surface of the first connecting plate 24 , and the cylinder 35 is fixed on the bottom surface of the L-shaped plate 20 . When in use, the L-shaped plate 20 rises, and then drives the entire installation box 28 to rise through the cylinder 35. At this time, sliding occurs between the vertical rod 29 and the through hole. When the tensile force is about to exceed the range of the tension sensor 1, the vertical rod 29 comes out of the through hole. , at this time, the limit plate 32 pops up under the action of the third compression spring 34, the limit plate 32 no longer acts as a limiter on the second limit cap 36, and the mounting box 28 falls down, reducing the pulling force received by the tension sensor 1, preventing the The tension sensor 1 is overloaded and damaged. The function of the first compression spring 23 is to avoid rigid contact between the first connecting plate 24 and the first limiting cap 22 .

In a further optimized solution, the surfaces of the first fixed clamp block 3 and the first sliding clamp block 5 are fixedly connected with flexible clamp plates 37 , and the opposite surfaces of the two flexible clamp plates 37 are provided with a plurality of circular holes. The function of the flexible splint 37 is to avoid hard contact between the copper foil and the first fixed clamp block 3 and the first sliding clamp block 5, resulting in scratches or pressure injuries on the surface of the copper foil, affecting the test results. The opposite surfaces of the two flexible splints 37 There are several round holes on the top, and the air in the round holes is discharged when clamping, and the copper foil is more closely attached to the flexible splint 37 under the action of atmospheric pressure, so as to prevent the copper foil from falling out of the first fixed clamp block 3 and 3 during the test. between the first sliding clamps 5 . The material of the flexible splint 37 is preferably rubber.

The lower clamping part has the same structure as the upper clamping part.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or It is implied that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The above-mentioned embodiments are only to describe the preferred modes of the present invention, but not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those of ordinary skill in the art can make various modifications to the technical solutions of the present invention. Variations and improvements should fall within the protection scope determined by the claims of the present invention.

Claims (9)

1. A copper foil tensile force testing device is characterized by comprising:

a support portion;

the power part is arranged at the top end of the supporting part;

the upper clamping part is arranged in the supporting part and is in transmission connection with the power part, a tension sensor (1) is arranged between the upper clamping part and the power part, the upper clamping part comprises a first base (2), a first fixed clamping block (3) is fixedly connected to the bottom end of the first base (2), a first sliding groove is formed in the bottom surface of the first base (2), a first sliding block (4) is connected to the first sliding groove in a sliding manner, one end of the first sliding block (4) extends out of the first sliding groove and is fixedly connected with a first sliding clamping block (5), the first sliding clamping block (5) and the first fixed clamping block (3) are arranged right opposite to each other, and the first sliding block (4) is in transmission connection with a first clamping motor (6);

the lower clamping part is fixed at the bottom of the supporting part and is arranged opposite to the upper clamping part, the lower clamping part comprises a second base (7), a second fixed clamping block (8) is fixedly connected to the top end of the second base (7), a second sliding groove is formed in the top surface of the second base (7), a second sliding block (9) is connected in the second sliding groove in a sliding mode, one end of the second sliding block (9) extends out of the second sliding groove and is fixedly connected with a second sliding clamping block (10), the second sliding clamping block (10) is arranged opposite to the second fixed clamping block (8), and a second clamping motor (11) is connected to the second sliding block (9) in a transmission mode;

the clamping surfaces of the first fixing clamping block (3) and the second fixing clamping block (8) are located on the same vertical plane.

2. The copper foil tension testing device of claim 1, wherein: the supporting part includes bottom plate (12), the rigid coupling has two backup pads (13) on the top surface of bottom plate (12), two backup pad (13) are located respectively the both ends of bottom plate (12), two the rigid coupling has roof (14) between the top of backup pad (13), power portion sets up on the top surface of roof (14), first base (2) are located bottom plate (12) with between roof (14), second base (7) rigid coupling is in on the top surface of bottom plate (12).

3. The copper foil tension testing device of claim 2, wherein: the power part comprises a lifting motor (15) fixedly connected with the top surface of the top plate (14), an output shaft of the lifting motor (15) penetrates through the top plate (14) and is fixedly connected with a first screw rod (16), the first screw (16) is rotationally connected between the top plate (14) and the bottom plate (12), a third sliding block (17) is connected on the first screw rod (16) in a threaded manner, transverse plates (18) are fixedly connected on the top surface and the bottom surface of the third sliding block (17), the transverse plate (18) is sleeved on the outer side of the first screw rod (16), two ends of the transverse plate (18) are provided with vertically arranged limiting rods (19) in a penetrating way, the limiting rods (19) are connected with the transverse plate (18) in a sliding way, the two limiting rods (19) are arranged in parallel and are arranged in an axial symmetry way by taking the axial line of the first screw (16), the limiting rod (19) is fixedly connected between the top plate (14) and the bottom plate (12).

4. The copper foil tension test device of claim 3, wherein: two one side rigid coupling of diaphragm (18) has the one end of L shaped plate (20), the other end level of L shaped plate (20) sets up, the rigid coupling has two spacing post (21) on the bottom surface of L shaped plate (20), two spacing post (21) are located respectively the both sides of L shaped plate (20), the bottom rigid coupling of spacing post (21) has first spacing cap (22), the cover is equipped with first compression spring (23) on the lateral wall of spacing post (21), the bottom of first compression spring (23) with first spacing cap (22) rigid coupling, two sliding connection has first connecting plate (24) on spacing post (21), first connecting plate (24) are located the top of first compression spring (23), first connecting plate (24) with still be provided with overload protection mechanism between L shaped plate (20).

5. The copper foil tension test device of claim 4, wherein: the tension sensor (1) is fixedly connected to the bottom surface of the first connecting plate (24), the second connecting plate (25) is fixedly connected to the bottom end of the tension sensor (1), and the first base (2) is fixedly connected to the bottom surface of the second connecting plate (25).

6. The copper foil tension test device of claim 5, wherein: first centre gripping motor (6) rigid coupling is in on the bottom surface of second connecting plate (25), there is second screw rod (26) through the coupling joint on the output shaft of first centre gripping motor (6), second screw rod (26) penetrate in the first spout and with the axis parallel arrangement of first spout, second screw rod (26) with first slider (4) threaded connection.

7. The copper foil tension test device of claim 6, wherein: second centre gripping motor (11) rigid coupling is in on the top surface of bottom plate (12), pass through on the output shaft of second centre gripping motor (11) the shaft coupling rigid coupling has third screw rod (27), third screw rod (27) penetrate in the second spout and with the axis parallel arrangement of second spout, third screw rod (27) with second slider (9) threaded connection.

8. The copper foil tension test device of claim 4, wherein: the overload protection mechanism comprises a mounting box (28), two vertical rods (29) are arranged on the bottom wall of the mounting box (28) in a penetrating mode, a third connecting plate (30) is fixedly connected between the two vertical rods (29), the third connecting plate (30) is located in the mounting box (28), a second compression spring (31) is sleeved on the vertical rods (29), the second compression spring (31) is located between the third connecting plate (30) and the inner side wall of the mounting box (28), two limiting plates (32) are arranged on the two opposite side walls of the mounting box (28) in a penetrating mode, the two limiting plates (32) are symmetrically arranged, a limiting piece (33) is fixedly connected to one end, located on the outer side of the mounting box (28), of each limiting plate (32), a third compression spring (34) is sleeved on the outer side of each limiting plate (32), the third compression spring (34) is located between the limiting piece (33) and the outer side wall of the mounting box (28), limiting plate (32) are located one end in mounting box (28) is seted up flutedly, the through-hole has been seted up on limiting plate (32), the through-hole is located in mounting box (28), the top of montant (29) penetrates in the through-hole, two be equipped with cylinder (35) between the recess, cylinder (35) are located one end rigid coupling in mounting box (28) has second limit cap (36), second limit cap (36) are located two between the recess, two the equal rigid coupling of montant (29) is in on the top surface of first connecting plate (24), cylinder (35) rigid coupling is in on the bottom surface of L shaped plate (20).

9. The copper foil tension test device of claim 1, wherein: first fixed clamp splice (3) with equal rigid coupling has flexible splint (37) on the face that first slip clamp splice (5) is relative, two a plurality of round holes have all been seted up on the face that flexible splint (37) are relative.

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