CN115561066B

CN115561066B - Automatic staple shearing force testing device and testing method

Info

Publication number: CN115561066B
Application number: CN202211150206.3A
Authority: CN
Inventors: 张木兴; 钟林驹
Original assignee: Shaoxing Shunxing Metal Producting Co ltd
Current assignee: Shaoxing Shunxing Metal Producting Co ltd
Priority date: 2022-09-21
Filing date: 2022-09-21
Publication date: 2024-03-22
Anticipated expiration: 2042-09-21
Also published as: CN115561066A

Abstract

The utility model discloses an automatic testing device for shearing force of staples, which aims to solve the problems of accuracy and efficiency of the shearing force testing of the staples, and has the technical scheme that: comprises a frame, a supporting rail supported by the frame, a limiting block, a pushing block, a pressing block, a detection block, a pressure gauge and a plurality of driving parts. The staples are supported through the supporting rail to form a sliding supporting structure; one end of the staple is pressed and limited by the limiting block, the other end of the staple is pushed by the pushing block, the staple is pressed on the limiting block, the staple is fixed by the pressing block, and the staple can be fixed and clamped at a determined position of the supporting rail. The first single staple of the staple is pressed down by the press and the detection block until the staple is separated, and then the shearing force value of the staple can be obtained. Through the mutually supporting and automatic drive of each part, can realize the shearing force automatic test to the staple, improve nailing test's accuracy and efficiency.

Description

Automatic staple shearing force testing device and testing method

Technical Field

The utility model relates to a staple detection device, in particular to an automatic staple shearing force testing device and an automatic staple shearing force testing method.

Background

The staples are long products which can be used in daily office work and production processes, the single staples in each group are adhered by listening to glue to form a continuous whole, and the single staples are pressed out through the stapler in the use process, so that the binding is realized. The staples are bonded by glue, the bonding force between the glue is directly affected, and the size of force selected by breaking the staples after shearing force directly affects the smooth binding stability of the staples in the use process.

For products of higher quality, it is desirable to control the pressure uniformity required for staple stapling, which in turn is responsive to shear forces between staples. The Chinese patent with publication number of CN216646218U discloses a staple shearing force testing device, which comprises a lifting seat, a mounting seat, a pressure gauge, a testing frame and a driving mechanism, wherein the lifting seat, the mounting seat, the pressure gauge, the testing frame and the driving mechanism are arranged on a base; the test rack is installed on the mounting seat and is adjustable in height and used for mounting staples to be tested, the lifting seat is driven to lift through the driving mechanism, the pressure gauge is fixed on the lifting seat, a pressing block is fixed on the detection end of the pressure gauge and is located above one side of the test rack and used for pressing down the staples. Through adopting carrying out the structure with automatic lifting equipment and manometer, can detect the staple and receive the pressure, break off the required pressure of whereabouts in-process, can monitor the bonding condition of staple to can improve the holistic stability of staple, improve the use experience of staple.

However, in the prior art, the staples are manually adjusted, and in the testing process, the staples are manually pushed, so that each single staple in the whole row of staples is subjected to a pressing test. In the manual pushing process, the protruding amount of the staples is different due to different experiences of each person, so that a large error exists in the shearing force testing process of the staples; and because the manual operation intervention is larger, larger errors are also unavoidable, and the accuracy of staple shearing force test is affected.

There is therefore a need to propose a new solution to this problem.

Disclosure of Invention

The utility model aims to solve the problems and provide an automatic staple shearing force testing device which can improve the precision and efficiency of staple shearing force testing.

The technical aim of the utility model is realized by the following technical scheme: an automatic staple shearing force testing device comprises a rack, a supporting rail, a limiting block, a pressing block, a detecting block and a pressure gauge;

the support rail is arranged on the frame and is matched with the staples to enable the staples to slide along the length direction;

the extending position of the limiting block, which is arranged at the first end of the supporting rail, can be reciprocally adjusted relative to the first end through the driving of the first driving piece; the limiting block is provided with a blocking position close to the first end; at the blocking position, a gap for a single staple is formed between the limiting block and the first end, and the width of the gap is larger than the width of the single staple and smaller than twice the width of the single staple;

the pressing block is arranged above the supporting rail, can be driven by the driving piece III to reciprocate up and down and is used for pressing and fixing the staples on the supporting rail;

the pressure gauge is arranged above the first end of the supporting rail, can reciprocate up and down through driving of the driving piece IV, and is provided with a downward detection end; the detection block is arranged at the detection end and is used for downwards propping against the first single nail extending out of the first end until falling off.

The utility model further provides a pushing block which is arranged at the second end of the supporting rail, can reciprocate along the supporting rail by being driven by the driving piece II and is used for pushing and pushing the staples to move towards the first end direction until the staples are propped against the limiting block.

The utility model is further arranged that the pushing block is matched with the outline of the staple, the lower part is provided with a through groove, and the through groove position of the pushing block is covered on the upper side of the supporting rail.

The utility model further provides that the support rail is adapted to the inner contour of the staples, the upper side is provided with a support surface for supporting the staples, and the width of the support surface is smaller than the width of the legs of the staples.

The utility model is further arranged that the first end face of the supporting rail and the supporting surface are inclined at an acute angle.

The utility model is further arranged that the rack is provided with a mounting seat for mounting the supporting rail, and the lower part of the supporting rail is detachably connected with the mounting seat; the detection block is detachably connected to the detection end.

The utility model is further arranged that a step groove is formed in the lower end position of one side of the detection block, which faces the staple, and the step groove is provided with a downward transverse position surface and a side position surface which faces the staple; the transverse surface is used for downwards pressing a first single nail extending out of the first end.

The utility model is further arranged such that the transverse plane is parallel to the support rail and has a width which is smaller than the single staple width of the staples.

The utility model is further arranged that the limiting block is provided with a limiting surface which is propped against the staples and is positioned at the blocking position, and the limiting surface is perpendicular to the length direction of the supporting rail; the side surface is parallel to the limiting surface at the blocking position, and the distance between the side surface and the first end is larger than the width of the gap.

The utility model also provides an automatic test method for the shearing force of the staples, which adopts the test device to test, and selects an adaptive support rail, a pushing block and a detection block according to the specification of the staples to be detected;

the test process comprises the following steps:

1) Sleeving a staple to be tested on the support rail;

2) The limiting block is adjusted to a blocking position close to the first end of the supporting rail through the first driving part;

3) The second driving piece drives the pushing block to move towards the first end, and the pushing block pushes the staples to move towards the first end until the staples are propped against the limiting block;

4) The third driving part drives the pressing block to press downwards, so that the staples are pressed and fixed on the support rail; the first driving piece and the second driving piece respectively drive the limiting block and the pushing block to move back to the direction of the staples, and the limiting block is separated from the staples;

5) The fourth driving piece drives the pressure gauge to move downwards, and the detection block is pressed downwards on the first single nail extending out of the first end until falling off; then the fourth driving piece drives the pressure gauge and the detection block to move upwards for resetting; the pressure gauge can obtain a shearing force value in the staple detachment process;

6) And repeating the steps, and sequentially carrying out shearing force test on each single staple in the whole row of staples.

In summary, the utility model has the following beneficial effects:

the position of the staple can be adjusted by adopting the mutual adaptation of the limiting block and the pushing block, the staple is adjusted and controlled to be at an accurate test position, and the staple is pressed and fixed through the pressing block, so that the test accuracy can be improved; and can realize automatic adjustment to the staple, improve test efficiency. The automatic testing process can discharge errors of the manual testing process, ensure that the states in each pressing testing process are consistent, avoid errors of manual detection and improve accuracy of staple shearing force testing.

Through the interval of control stopper and the first end of backing rail, can adjust the projecting amount of staple, the first single nail of control staple can stretch out unsettled, ensures staple other support interference in the noon of pushing down the in-process, improves the precision of shearing force test.

Through seting up the ladder groove in the downside position of detecting the piece, the ladder groove can be just with stretching out unsettled first single nail and support downwards to press, keeps single nail to push down the smoothness of in-process, keeps the nailing stable to the state when can simulate the staple use, and then make the shear force test of staple more accord with in-service use state, improve the accuracy of staple shear force test.

Drawings

FIG. 1 is a schematic diagram of an automatic staple shear force testing device according to the present utility model;

FIG. 2 is a schematic diagram of a device for automatically testing shearing force of staples according to the present utility model;

FIG. 3 is a schematic diagram of an automatic staple shear force testing device according to the present utility model;

FIG. 4 is a partial enlarged view of the present utility model during testing;

FIG. 5 is a partial enlarged view of the present utility model during debugging;

FIG. 6 is a schematic cross-sectional view of the support rail and staple of the present utility model.

Reference numerals: 1. a frame; 2. a support rail; 21. a first end; 22. a second end; 23. a support surface; 24. an end face; 25. a mounting base; 3. a limiting block; 31. a first driving member; 32. a limiting surface; 33. a gap; 4. a pushing block; 41. a second driving piece; 42. a through groove; 5. briquetting; 51. a third driving member; 6. a pressure gauge; 61. a driving member IV; 62. a detection end; 7. a detection block; 71. a stepped groove; 72. a transverse plane; 73. a side surface; 8. a staple; 81. single nail; 82. and (5) stitching.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment discloses an automatic staple shearing force testing device, which is shown in fig. 1-6 and comprises a frame 1, a support rail 2, a limiting block 3, a pushing block 4, a pressing block 5, a detecting block 7, a pressure gauge 6 and a plurality of driving pieces, wherein the support rail 2 is supported through frame installation.

The staples 8 are supported by the support rail 2 to form a sliding support structure; one end of the staple 8 is propped and limited through the limiting block 3, the other end of the staple is pushed through the pushing block 4, the staple 8 is propped and pressed on the limiting block 3, the staple 8 is fixed through the pressing block 5, and the staple 8 can be fixedly clamped at a determined position of the supporting rail 2. The first single staple 81 of the staple 8 is pressed down by the press and the detection block 7 until it is released, and a value simulating the shearing force applied to the staple 8 during the nailing process can be obtained. Through the mutually supporting and automatic drive of each part, can realize testing staple 8's shearing force, improve nailing test's accuracy and efficiency.

Wherein, the support rail 2 is arranged on the frame 1 and is matched with the staple 8 in a sliding guide way. The upper side of the support rail 2 is a horizontal support surface 23, the width of the support surface is smaller than that of the legs 82 of the staples 8, and the support surface is matched with the inner contour of the staples 8, so that the staples 8 in the whole row can be nested on the upper side of the support rail 2, and a structure capable of allowing the staples 8 to slide along the length direction is formed;

according to the model of different staples 8, the size of the supporting rail 2 needs to be changed, so that the supporting rail 2 can be installed on the frame 1 by adopting a detachable structure, and particularly, the supporting rail 2 can be fixed by adopting structures such as threads, nuts, clamping blocks and the like. For example, two parallel mounting seats 25 may be mounted on the frame 1, a mounting groove may be formed between the two mounting seats 25, and the lower half portion of the support rail 2 may be inserted into the mounting groove; the bolts are mounted on the mounting seat 25 on one side, and the lower part of the support rail 2 can be clamped by tightening the bolts, so that the whole support rail 2 is fixed. When the support rail 2 is installed, the upper surface of the installation rail can be kept in a horizontal state by detecting through a level gauge, so that the positions and angles of other components can be adjusted conveniently.

The supporting rail 2 corresponds to the length direction of the whole row of staples 8, and is respectively provided with a first end 21 and a second end 22, the staples 8 can be stretched out to perform nailing shearing force test at the position of the first end 21, and the staples 8 can be driven to move towards the first end 21 by pushing the pushing block 4 at the position of the second end 22 so as to stretch out the staples 8.

As shown in fig. 1, the stopper 3 is disposed at an extended position of the first end 21 of the support rail 2, and is driven by the first driving member 31 to be reciprocally adjustable with respect to the first end 21, where the first driving member 31 may be a power member such as an air cylinder, may be a linear movement manner, or may be a swinging manner. During the displacement travel of the stop 3, there is a blocking position close to the first end 21. When the limiting block 3 moves to the blocking position, the limiting block 3 can block and limit the moving position of the staples 8, the limiting block 3 and the first end 21 form a gap 33 for the staples 81, the width of the gap 33 is larger than that of the staples 81 and smaller than twice that of the staples 81, and one staple 8 can be completely stretched out to form a suspended state, so that the influence of friction and the like brought by the supporting rail 2 is eliminated when the test is achieved.

The limiting block 3 is provided with a limiting surface 32 on one side facing the supporting rail 2, and the limiting block 3 is propped against the staples 8 through the limiting surface 32 to play a role of propping and limiting. When the stopper 3 is in the blocking position, the stopper surface 32 of the stopper 3 is perpendicular to the longitudinal direction of the support rail 2, and is in parallel contact with the end surface 24 of the staple 8.

For example, the first driving member 31 is an air cylinder, when the air cylinder is extended, the stopper 3 is at the bottom blocking position, after the position adjustment of the staple 8 is completed, the position of the staple 8 is fixedly clamped, and then the first driving member 31 is retracted, so that a space for pressing the test is formed at the extended position of the staple 8.

The press block 5 is arranged above the support rail 2 and near one side of the first end 21. The pressing block 5 is supported by the third driving piece 51, and the pressing block 5 can be driven to reciprocate up and down under the action of the third driving piece 51. When the pressing block 5 is adjusted to be capable of propping against the support rail 2, the staples 8 can be clamped and fixed on the support rail 2 under the action of pressure, and the staples 8 are kept in a fixed state in the pressure test process. The third driving member 51 may be an air cylinder or the like, and may be configured to vertically adjust the pressing block 5, so as to clamp the staple 8 to the support rail 2.

The pressure gauge 6 can be used for testing the shearing force of the staples 8, and is provided with a detection pin, so that when the detection end 62 is subjected to pressure, the value of the pressure can be obtained, and specifically, the conventional pressure gauge 6 can be directly adopted.

The pressure gauge 6 is provided above the first end 21 of the support rail 2, and is supported by the fourth driving member 61, and the pressure gauge 6 is driven to reciprocate up and down. The detection end 62 of the pressure gauge 6 faces downward and is perpendicular to the upper surface of the support rail 2, that is, the staple 8 is also perpendicular, and the pressing direction of the staple 8 is the same. The driving piece IV 61 can adopt a threaded screw rod transmission structure, and is driven by a stepping motor, so that the pressure gauge 6 can be kept to be slowly pressed down at a constant speed in the adjusting process, the stability of pressure is kept, and the accuracy of nailing test is improved. The driving member four 61 is guided up and down by the rail, so that the downward pressure is always perpendicular to the staple 8, and an error in measurement of the shearing force is avoided.

During the downward movement of the pressure gauge 6, the detecting block 7 may abut against the first single staple 81 extending out of the first end 21, the pressure gauge 6 may press the staple 81 down again until the staple 81 falls off. During the pressing down, the pressure gauge 6 can detect the pressure during the pressing down in real time, and the shearing force between the staples 8 can be tested.

The detection block 7 is arranged at the lower end of the detection end 62 of the pressure gauge 6, the detection block 7 is mutually matched with the staples 8 of the corresponding model, and the detection block 7 and the detection end 62 are fixed in a detachable connection mode before, for example, a threaded connection structure can be adopted.

In order to maintain the stability of the pressing between the detection block 7 and the staple 8, a stepped groove 71 may be formed at the lower end position of the detection block 7 facing the staple 8, and the single staple 81 of the staple 8 may be mutually matched through the stepped groove 71, so that the stability of the pressing process of the staple 8 may be maintained during the nailing process.

The stepped groove 71 has a downward-facing lateral surface 72 and a lateral surface 73 facing the staple 8, wherein the lateral surfaces 72 are parallel to each other on the upper side of the support rail 2, i.e. also parallel to the upper side of the staple 8, and the first individual staple 81 protruding from the first end 21 can be pressed by the lateral surfaces 72 for the nailing test.

The horizontal width of the stepped groove 71, that is, the width of the lateral surface 72 is slightly smaller than the width of the single staple 81 of the staple 8, and the position where the lateral surface 72 is pressed against the single staple 81 exceeds half the width of the single staple 81. In the pressing test process, only one staple 8 is kept against, other interference is avoided, and the accuracy of the test process is maintained.

The side surface 73 is in a vertical state, and is parallel to the stopper surface 32 at the blocking position, that is, is parallel to the end surface 24 of the staple 8. The distance between the side surface 73 and the first end 21 of the support rail 2 is greater than the width of the gap 33 between the limiting surface 32 and the first end 21. It is possible to keep the detection block 7 in the pressing-down process, a minute gap is formed between the side surface 73 and the staple 8, and the side surface 73 and the end surface 24 of the staple 8 are not in contact with each other. By the structure of the stepped groove 71, a stable depressed state between the detection block 7 and the staple 8 can be maintained, and the staple 8 is kept as much as possible under only a vertically downward pressure, that is, a shearing force equivalent to that required for nailing the staple 8.

By adopting the structure of the stepped groove 71, the lateral surface 72 plays a role of pressing down, the lateral surface 73 plays a role of blocking and limiting, and the staple 8 can be kept in a vertically downward moving state by the blocking of the lateral surface 73. When the staple 8 is inclined toward the side surface 73, friction is generated between the side surface 73 and the staple 8, and the friction force acts on the detection block 7, so that the friction force can be transmitted to the detection end 62 of the pressure gauge 6, and further, the detection end can be collected and recorded by the pressure gauge 6, so that the error of the shear force test is reduced to a certain extent.

Since the staple 8 extends to a length slightly greater than the width of a single staple 8, during the downward pressing of the staple 8, the staple 8 may incline to one side of the case support rail 2, and further friction resistance may be generated between the staple 8 and the first end face 24 of the support rail 2, which would affect the test of the shearing force, resulting in a large error. Furthermore, the structure of the first end 21 of the support rail 2 can be optimally designed, and the first end surface 24 of the support rail 2 is inclined at an acute angle to the support surface 23. The inclined state can increase the distance between the first end face 24 and the pressed staple 8, so that the staple 8 is always in a suspended state in the pressing test process, and the accuracy of the test side is improved.

The testing device further comprises a pushing block 4, wherein the pushing block 4 is arranged at the second end 22 of the supporting rail 2, is supported by a second driving piece 41, and can drive the pushing block 4 to reciprocate along the length direction of the supporting rail 2 for adjustment. When moving towards the first end 21 of the support rail 2, the staple 8 can be pushed to move towards the pressing direction until the staple 8 abuts against the limiting block 3. When the staple 8 is abutted against the limiting block 3, one staple 81 at the forefront end position of the staple 8 extends out of the supporting rail 2 to form a suspended state, and then a nailing shearing force test can be performed.

In order to maintain the pushing stability between the pushing block 4 and the staple 8, the section of the pushing block 4 may be formed into a structure adapted to the staple 8, a through groove 42 is formed at the lower side of the pushing block 4, and the pushing block 4 is covered at the upper side of the support rail 2. By forming the slide guide structure with the upper side portion of the support rail 2 through the through groove 42, the push block 4 can maintain stability of both when pressing against the staple 8, and can form a stable moving state. Specifically, the second driving member 41 may be an air cylinder, and the pushing block 4 may be fixedly mounted at the telescopic end of the second driving member 41 by a detachable structure, so that the staples 8 formed in different manners may be replaced.

The embodiment also discloses an automatic test method for the shearing force of the staples 8, which is implemented by adopting the test device in the embodiment, and the test device is debugged before the test, and then the shearing force test is implemented;

the debugging process comprises the following steps:

according to the specifications of the staples 8 to be detected, the adapted support rail 2, push block 4 and detection block 7 are selected. The limiting block 3 is adjusted to a blocking position through the first driving part 31, the supporting rail 2 is installed on the frame 1, the upper side face of the supporting rail 2 is controlled to be perpendicular to the limiting face 32, the gap 33 between the first end 21 and the limiting block 3 is adjusted to be the size of the gap 33 which can be used for extending the single nail 81, and the width of the gap 33 is larger than the width of the single nail 81 and smaller than twice the width of the single nail 81. The pushing block 4 is mounted on the telescopic end of the second driving member 41, and the detecting block 7 is mounted on the detecting end 62 of the pressure gauge 6.

The test process comprises the following steps:

1) Sleeving a staple 8 to be tested on the support rail 2;

2) The limiting block 3 is adjusted to a blocking position close to the first end 21 of the supporting rail 2 through the first driving part 31;

3) The second driving piece 41 drives the pushing block 4 to move towards the first end 21, and the pushing block 4 pushes the staples 8 to move towards the first end 21 until the staples 8 are propped against the limiting block 3;

4) The third driving piece 51 drives the pressing block 5 to move downwards, and the pressing block 5 presses and fixes the staples 8 on the support rail 2; the first driving piece 31 and the second driving piece 41 respectively drive the limiting block 3 and the pushing block 4 to move back to the direction of the staple 8, and the limiting block 3 is separated from the staple 8;

5) The fourth driving piece 61 drives the pressure gauge 6 to slowly move downwards at a constant speed, the detection block 7 moves downwards synchronously along with the pressure gauge 6, and the detection block 7 is pressed downwards on the first single nail 81 extending out of the first end 21 until falling off; the pressure gauge 6 can obtain the shearing force of the staple 81; and then the fourth driving piece 61 drives the pressure gauge 6 and the detection block 7 to move upwards for resetting;

6) Repeating the above steps, sequentially performing shear force test on each single staple 81 in the entire row of staples 8 the present embodiment discloses an automatic staple shear force test device, as shown in fig. 1 to 6, comprising a frame 1, a support rail 2 supported by installation, a stopper 3, a pushing block 4, a pressing block 5, a detecting block 7, a pressure gauge 6 and a plurality of driving members.

The staples 8 are supported by the support rail 2 to form a sliding support structure; one end of the staple 8 is propped and limited through the limiting block 3, the other end of the staple is pushed through the pushing block 4, the staple 8 is propped and pressed on the limiting block 3, the staple 8 is fixed through the pressing block 5, and the staple 8 can be fixedly clamped at a determined position of the supporting rail 2. The first single staple 81 of the staple 8 is pressed down by the press and the detection block 7 until it is disengaged, and the value of the shearing force of the staple 8 can be obtained. Through the mutually supporting and automatic drive of each part, can realize testing staple 8's shearing force, improve nailing test's accuracy and efficiency.

the debugging process comprises the following steps:

The test process comprises the following steps:

1) Sleeving a staple 8 to be tested on the support rail 2;

6) The above steps are repeated, and the shear force test is sequentially performed on each individual staple 81 in the entire row of staples 8.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. The automatic staple shearing force testing device is characterized by comprising a rack (1), a supporting rail (2), a limiting block (3), a pressing block (5), a detecting block (7) and a pressure gauge (6);

the support rail (2) is arranged on the frame (1) and is matched with the staples (8), so that the staples (8) can slide along the length direction;

the extending position of the first end (21) of the support rail (2) of the limiting block (3) can be driven by the first driving part (31) to be adjusted in a reciprocating manner relative to the first end (21); the limiting block (3) has a blocking position close to the first end (21); in the blocking position, the limiting block (3) and the first end (21) form a gap (33) for a single staple (81);

the pressing block (5) is arranged above the supporting rail (2), is driven by the driving piece III (51) to be capable of being adjusted up and down in a reciprocating mode, and is used for propping and fixing the staples (8) on the supporting rail (2);

the pressure gauge (6) is arranged above the first end (21) of the supporting rail (2), can be driven to reciprocate up and down by a driving piece IV (61), and is provided with a downward detection end (62); the detection block (7) is arranged at the detection end (62) and is used for pressing a first single nail (81) extending out of the first end (21) downwards until falling off;

a step groove (71) is formed in the lower end position of the detection block (7) facing one side of the staple (8), and the step groove (71) is provided with a downward transverse position surface (72) and a side position surface (73) facing the staple (8); a first single nail (81) of the transverse position surface (72) is used for downwards pressing and extending out of the first end (21); the transverse position surface (72) is parallel to the support rail (2) and has a width smaller than the width of a single staple (81) of the staple (8);

the limiting block (3) is provided with a limiting surface (32) for propping against the staples (8); when the limiting block (3) is positioned at the blocking position, the limiting surface (32) is perpendicular to the length direction of the supporting rail (2); the lateral surface (73) is parallel to the stop surface (32) in the blocking position and is at a greater distance from the first end (21) than the width of the gap (33).

2. The automatic staple shearing force testing device according to claim 1, further comprising a pushing block (4), wherein the pushing block (4) is arranged at the second end (22) of the supporting rail (2), and is driven by the driving piece II (41) to reciprocate along the supporting rail (2) so as to push and push the staples (8) towards the first end (21) until pushing against the limiting block (3).

3. The automatic staple shearing force testing device according to claim 2, wherein the pushing block (4) is matched with the outline of the staple (8), the lower part is provided with a through groove (42), and the position of the through groove (42) of the pushing block (4) is covered on the upper side of the supporting rail (2).

4. An automatic test device for shearing force of staples according to claim 1, characterized in that said supporting rail (2) is adapted to the inner contour of the staples (8), and that the upper side is provided with a supporting surface (23) for supporting the staples (8) and that the width is smaller than the width of the legs (82) of the staples (8).

5. An automatic staple shearing force testing device as defined in claim 4, wherein the first end face (24) of said support rail (2) is inclined at an acute angle to the support face (23).

6. The automatic staple shearing force testing device according to claim 1, wherein the rack (1) is provided with a mounting seat (25) for mounting the supporting rail (2), and the lower part of the supporting rail (2) is detachably connected with the mounting seat (25); the detection block (7) is detachably connected with the detection end (62).

7. An automatic test method for shearing force of staples is characterized in that the test is carried out by adopting the test device as set forth in any one of claims 1-6, and an adaptive support rail (2), a pushing block (4) and a detection block (7) are selected according to the specification of the staples (8) to be detected;

the test process comprises the following steps:

1) Sleeving a staple (8) to be tested on the support rail (2);

2) The limiting block (3) is adjusted to a blocking position close to the first end (21) of the supporting rail (2) through the first driving part (31);

3) The second driving piece (41) drives the pushing block (4) to move towards the first end (21), and the pushing block (4) pushes the staples (8) to move towards the first end (21) until the staples (8) are propped against the limiting block (3);

4) The third driving piece (51) drives the pressing block (5) to press downwards, so that the staples (8) are pressed against and fixed on the supporting rail (2); the first driving piece (31) and the second driving piece (41) respectively drive the limiting block (3) and the pushing block (4) to move back to the direction of the staples (8), and the limiting block (3) is separated from the staples (8);

5) The fourth driving piece (61) drives the pressure gauge (6) to move downwards, and the detection block (7) is pressed against the first single nail (81) extending out of the first end (21) downwards until falling off; and then the fourth driving part (61) drives the pressure gauge (6) and the detection block (7) to move upwards for resetting; the pressure gauge (6) can obtain a shearing force value in the staple (8) detachment process;

6) The above steps are repeated, and the shear force test is sequentially performed on each single staple (81) in the entire row of staples (8).