A copper core pull-off test device for a shower hose and its test method

Abstract

The present invention discloses a copper core pull-off test device for a shower pipe and its test method. It includes a platform, on which a sliding seat is provided. The sliding seat is slidably connected to the platform in the left-right direction. On the platform, there are a first clamping plate and a second clamping plate. The first clamping plates are symmetrically distributed on the front and rear sides of the platform and are slidably connected to it in the front-rear direction. The second clamping plates are symmetrically distributed on the front and rear sides of the sliding seat and are slidably connected to it in the front-rear direction. On the first clamping plate, there is a first clamping block, and the first clamping block is arranged on the opposite surfaces of the two first clamping plates. On the second clamping plate, there is a second clamping block, and the second clamping block is arranged on the opposite surfaces of the two second clamping plates. The first clamping block and the second clamping block are located in the same plane. A force measuring platform is also installed on the platform, and a pull rod connected to the sliding seat is provided on the force measuring platform. The sliding seat is located between the first clamping plate and the force measuring platform. The beneficial effect of the present invention is that there is no need to fix the copper core, and the accuracy of the test results can be ensured for inner hoses and copper cores of different sizes and specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary wares, and in particular to a copper core pull-off test device for a shower pipe and a test method thereof. Background Art

[0002] With the development of the economy, people's living standards have been gradually improved, and the requirements for showers are getting higher and higher. The market for shower equipment is also becoming broader and broader. Therefore, researching and developing shower equipment has great economic significance. A shower pipe is a water pipe structure often used in sanitary facilities. As Figure 1 shown, its structure includes an inner hose 1 and a copper core 2. One end of the copper core 2 is inserted into the port of the inner hose 1, and an outward flange 3 is fixed at the other end of the copper core 2. The end face of the inner hose 1 abuts against the outward flange 3. Since the shower pipe needs to move and bend continuously during use, the firmness of the connection between the inner hose and the copper core is particularly important. Therefore, before being put into use, generally, a pull-off test needs to be carried out between the inner hose and the copper core to test the firmness between the two.

[0003] The existing pull-off test for shower pipes generally fixes the copper core on the fixed seat of the force measuring table, and then manually grabs the inner hose and pulls it outwards to judge whether the connection firmness between the inner hose and the copper core is qualified.

[0004] For inner hoses and copper cores with different size specifications, not only a new fixed seat needs to be replaced to match the copper core, which is troublesome to operate, but also due to the change of the size specifications of the inner hose and the copper core, it is very easy for the staff to pull the inner hose crooked during the pull-off process (that is, it cannot be ensured that the staff can always pull the inner hose parallel along the axis of the copper core), resulting in a radial pressure between the inner hose and the copper core. At this time, the staff needs a greater pulling force to pull the inner hose off the copper core, which greatly reduces the accuracy of the test results. Summary of the Invention

[0005] The present invention is to overcome the deficiencies in the prior art that for inner hoses and copper cores with different size specifications, not only a new fixed seat needs to be replaced to match the copper core, which is troublesome to operate, but also due to the change of the size specifications of the inner hose and the copper core, it is very easy for the staff to pull the inner hose crooked during the pull-off process (that is, it cannot be ensured that the staff can always pull the inner hose parallel along the axis of the copper core), resulting in a radial pressure between the inner hose and the copper core. At this time, the staff needs a greater pulling force to pull the inner hose off the copper core, which greatly reduces the accuracy of the test results. The present invention provides a copper core pull-off test device for a shower pipe and a test method thereof that do not require fixing the copper core and can ensure the accuracy of the test results for inner hoses and copper cores with different size specifications.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A copper core pulling-off test device for a shower pipe, comprising a platform, a sliding seat is arranged on the platform, the sliding seat is slidably connected to the platform left and right, a first clamping plate and a second clamping plate are arranged on the platform, the first clamping plates are symmetrically distributed on the front and rear sides of the platform and are slidably connected to it front and rear, the second clamping plates are symmetrically distributed on the front and rear sides of the sliding seat and are slidably connected to it front and rear, a first clamping block is arranged on the first clamping plate, the first clamping block is arranged on the opposite surface of the two first clamping plates, a second clamping block is arranged on the second clamping plate, the second clamping block is arranged on the opposite surface of the two second clamping plates, the first clamping block and the second clamping block are located in the same plane, a force measuring platform is further installed on the platform, a pull rod connected to the sliding seat is arranged on the force measuring platform, and the sliding seat is located between the first clamping plate and the force measuring platform.

[0008] The force measuring platform is used to control the pull rod to pull the sliding seat, so that it slides left and right on the platform, and can display the pulling force used by the pull rod in real time; a cylinder is also installed on the platform to control the front and back sliding of the first clamping plate and the second clamping plate. In the initial state, the first clamping block on the first clamping plate located on the front side of the platform and the second clamping block on the second clamping plate located on the front side of the platform are on the same horizontal line, and the first clamping block on the first clamping plate located on the rear side of the platform and the second clamping block on the second clamping plate located on the rear side of the platform are also on the same horizontal line. When starting the test, the staff places the inner hose between the first clamping plates on both sides of the platform (and also between the second clamping plates on both sides of the platform), and makes the copper core located between the sliding seat and the force measuring platform; then the cylinder controls the first clamping plates and the second clamping plates on both sides of the platform to move simultaneously towards the direction of the inner hose, so that the first clamping block and the second clamping block clamp the inner hose simultaneously (not tightly clamped), and at this time the clamped part of the inner hose becomes a horizontal straight line shape; then the pull rod on the force measuring platform is used to pull the sliding seat, so that it moves towards the copper core along the direction of the horizontal straight line, thereby driving the second clamping block to straighten the inner hose along the direction of the horizontal straight line. At the same time, the cylinder controls the first clamping plates on both sides to exert force again, and clamps and fixes the inner hose simultaneously from both sides of the inner hose (by exerting force simultaneously on both sides for fixation, the geometric center line of the fixed inner hose can be kept unchanged); since the inner hose has been fixed by the first clamping plate, as the sliding seat moves, the second clamping block on the second clamping plate will eventually top against the outer turned edge of the copper core and push the copper core out of the port of the inner hose, and at this time the pulling force used by the pull rod on the force measuring platform is the actual pulling-off force. By making the first clamping block and the second clamping block on both sides of the platform move simultaneously towards the direction of the inner hose, so that the first clamping block and the second clamping block clamp the inner hose simultaneously, the inner hose of different sizes and specifications can be clamped into a horizontal straight line state; by controlling the first clamping plates on both sides to exert force simultaneously, and clamping and fixing the inner hose simultaneously from both sides of the inner hose, the geometric center line of the fixed inner hose can still be kept unchanged and still be in the same horizontal straight line state; by pulling the sliding seat with the pull rod, so that it moves towards the copper core along the direction of the horizontal straight line, the second clamping block on it can still straighten the inner hose along the same horizontal straight line direction; as the sliding seat moves, the second clamping block on the second clamping plate closest to the copper core will eventually top against the outer turned edge of the copper core and push the copper core out of the port of the inner hose, and at this time the pulling force generated by the pull rod on the force measuring platform is the accurate actual pulling-off force. Since there is no need to fix the copper core, it is applicable to copper cores of different sizes and specifications. To sum up, for inner hoses and copper cores of different sizes and specifications, the accuracy of the test results can be guaranteed.

[0009] Preferably, the one clamping block comprises a plurality of V-shaped clamping blocks, the one clamping block is arranged in a straight line on the one clamping plate, and the two V-shaped clamping blocks on the one clamping plate are staggered, the bottom of the one clamping block is fixed on the one clamping plate, and the open ends of the one clamping blocks on the two clamping plates are arranged opposite to each other, and the two clamping blocks comprise a plurality of V-shaped clamping blocks, the two clamping blocks are arranged in a straight line on the two clamping plates, and the two V-shaped clamping blocks on the two clamping plates are staggered, the bottom of the two clamping blocks is fixed on the two clamping plates, and the open ends of the two clamping blocks on the two clamping plates are arranged opposite to each other, the opening angle of the one clamping block is the same as the opening angle of the two clamping blocks, the bottom of the one clamping block and the bottom of the two clamping blocks are located in the same plane, and the straight line formed by the one clamping block on the one clamping plate and the straight line formed by the two clamping blocks on the two clamping plates are parallel to each other. Both sides of V-shaped clamp block 1 lie within a vertical plane, as do both sides of V-shaped clamp block 2. The design of V-shaped clamp blocks 1 and 2 effectively clamps inner hoses of varying widths, maintaining the clamped portion of the inner hose in a straight horizontal line. Furthermore, the straight lines formed by V-shaped clamp block 1 on clamp plate 1 and V-shaped clamp block 2 on clamp plate 2 are both parallel to the direction of motion of the pull rod. This ensures that as the pull rod pulls the sliding seat, clamp block 2 on the clamp plate continues to straighten the inner hose along the same horizontal line, improving test accuracy.

[0010] Preferably, the surface of the V-shaped clamping block 1 is provided with an anti-skid layer. The anti-skid layer is an anti-skid pattern provided on the surface of the V-shaped clamping block 1, which can improve the clamping effect of the V-shaped clamping block 1 on the inner hose.

[0011] Preferably, a top plate is fixed to the second V-shaped clamp closest to the force plate. The top plate is fixed to the side of the second V-shaped clamp and is located on the side facing the force plate. Top plates are provided on both the upper and lower sides of the second V-shaped clamp. The top plates symmetrically press against the outer edge of the copper core and push the copper core away from the end of the inner hose.

[0012] Preferably, a first clamping block chute matching the first V-shaped clamping block is provided on the platform. The top of one side of the first V-shaped clamping block is placed in the first clamping block chute and is slidably connected to it front and back. A second clamping block chute matching the second V-shaped clamping block is provided on the sliding seat. The top of one side of the second V-shaped clamping block is placed in the second clamping block chute and is slidably connected to it front and back. Through the design of the first clamping block chute, on the one hand, it plays a guiding role when the first clamping plate moves; on the other hand, when clamping the inner hose, since the top of one side of the first V-shaped clamping block is in the first clamping block chute, the two first V-shaped clamping blocks can clamp the inner hose more smoothly, ensuring a good clamping effect. Through the design of the second clamping block chute, on the one hand, it plays a guiding role when the second clamping plate moves; on the other hand, when clamping the inner hose, since the top of one side of the second V-shaped clamping block is in the second clamping block chute, the two second V-shaped clamping blocks can clamp the inner hose more smoothly, ensuring a good clamping effect.

[0013] Preferably, a clamping structure is provided between the first clamping plate and the second clamping plate on the same side of the platform. A clamping plate slider is fixed on the second clamping plate. A clamping plate chute matching the clamping plate slider is provided on the sliding seat. The clamping plate sliders on the two second clamping plates are both placed in the clamping plate chute and are slidably connected to it front and back. A locking structure is provided between the clamping plate slider and the clamping plate chute, and a clamping plate reset structure is also provided in the clamping plate chute. In the initial state, the first clamping plate and the second clamping plate are clamped together through the clamping structure, and the air cylinder is used to separately control the first clamping plate to slide back and forth, and then drive the second clamping plate to move synchronously through the clamping structure. Through the design of the clamping plate chute and the clamping plate slider, it can play a guiding role when the second clamping plate moves on the sliding seat. When the air cylinder controls the first clamping plate to move so that the first clamping block and the second clamping block clamp the inner hose at the same time (not tightly), the clamping structure between the first clamping plate and the second clamping plate will automatically release the clamping state, making the second clamping plate separate from the first clamping plate. At the same time, the locking structure automatically locks the clamping plate slider, thereby fixing the second clamping plate on the sliding seat; then the air cylinder controls the first clamping plate to move again to clamp and fix the inner hose. At the same time, the sliding seat moves under the pull of the pull rod, moving along the horizontal straight line direction towards the copper core, and pushing the copper core out of the port of the inner hose through the top plate. After the pull-off test is completed, the locking structure automatically releases the lock, and the second clamping plate is automatically reset through the clamping plate reset mechanism.

[0014] Preferably, a clamping rod chute is provided on the side of the second clamping plate facing the first clamping plate. The clamping structure includes a clamping rod slidably connected to the clamping rod chute. One end of the clamping rod is placed in the clamping rod chute and a moving iron core is fixed thereon. The moving iron core is connected to the bottom surface of the clamping rod chute through a first spring. An induction coil is provided inside the second clamping plate and outside the clamping rod chute. A clamping rod card slot matching the other end of the clamping rod is provided on the side of the first clamping plate facing the second clamping plate. In the initial state, the other end of the clamping rod is stuck in the clamping rod chute under the elastic force of the first spring. At this time, the first clamping plate and the second clamping plate are in a clamped state. A circuit board is provided inside the second clamping plate, and a clamping sensor is provided inside the V-shaped clamping block two. The clamping sensor, the air cylinder, and the force measuring table are all electrically connected to the circuit board. When the clamping sensor detects that the second clamping block clamps the inner hose (not tightly clamped), a clamping signal is sent to the circuit board. At this time, the circuit board energizes the induction coil to generate an induction magnetic field. The moving iron core drives the clamping rod to move towards the bottom of the clamping rod chute under the action of the magnetic force, so that the other end of the clamping rod disengages from the clamping rod card slot, thereby releasing the clamped state of the first clamping plate and the second clamping plate. Then the circuit board controls the air cylinder to work to clamp the inner hose tightly, and at the same time controls the force measuring table to work, and pulls the sliding seat to move through the pull rod. The operation is convenient and the degree of automation is high.

[0015] Preferably, a pressure rod chute is provided on the side wall of the clamping rod chute. The bottom of the pressure rod chute is located inside the clamping plate slider. The locking structure includes a pressure rod slidably connected to the pressure rod chute. A first guiding inclined surface is provided on the side wall of the clamping rod. A second guiding inclined surface matching the first guiding inclined surface is provided on the end surface of one end of the pressure rod. The first guiding inclined surface and the second guiding inclined surface are in contact with each other and are slidably connected. A locking block through hole is provided on the bottom side wall of the pressure rod chute. A locking block is slidably connected in the locking block through hole. A third guiding inclined surface is provided on the side wall of the other end of the pressure rod. A fourth guiding inclined surface matching the third guiding inclined surface is provided on the locking block. The third guiding inclined surface and the fourth guiding inclined surface are in contact with each other and are slidably connected. During the movement of the clamping rod towards the bottom of the clamping rod chute, driven by the guiding action of the first guiding inclined surface and the second guiding inclined surface, the pressure rod will be driven to move towards the bottom of the pressure rod chute. At the same time, driven by the guiding action of the third guiding inclined surface and the fourth guiding inclined surface, the locking block will be pushed to move towards the inner wall of the clamping plate chute and finally press on the inner wall of the clamping plate chute, thereby achieving the purpose of automatically locking the clamping plate slider, so that the second clamping plate is fixed on the sliding seat, ensuring the clamping accuracy of the V-shaped clamping block two during the movement of the sliding seat.

[0016] Preferably, the splint reset structure includes a second spring placed in the splint chute, and both ends of the second spring are respectively fixed on two splint sliders. When the two splints on both sides of the platform move towards the inner hose simultaneously to clamp the inner hose, the second spring is compressed; after the pull-off test is completed, the circuit board stops supplying power to the induction coil, and the clamping rod automatically resets under the action of the first spring. At this time, the pressure of the clamping rod on the pressure rod is released, and at the same time, the pressure of the locking block on the inner wall of the splint chute is also released. The two splint sliders (the second clamping plate) automatically reset under the action of the second spring.

[0017] The present invention also provides a test method for a pull-off test device of a copper core of a shower pipe, including the following steps:

[0018] Step 1, the staff places the inner hose between the first splints on both sides of the platform (and also between the second splints on both sides of the platform), and makes the copper core located between the sliding seat and the force measuring table;

[0019] Step 2, the first splints on both sides of the platform automatically move towards the inner hose simultaneously, and drive the second splints to move synchronously through the clamping structure, so that the first clamping block and the second clamping block clamp the inner hose simultaneously (not tightly). At this time, the clamped part of the inner hose becomes a horizontal straight line shape;

[0020] Step 3, the induction coil is automatically powered on to generate an induction magnetic field, and the moving iron core drives the clamping rod to move towards the bottom of the clamping rod chute under the action of the magnetic force, so that the other end of the clamping rod disengages from the clamping rod slot, thereby releasing the clamping state of the first splint and the second splint;

[0021] Step 4, during the process of the clamping rod moving towards the bottom of the clamping rod chute, through the guiding action of the first guiding inclined surface and the second guiding inclined surface, the pressure rod is driven to move towards the bottom of the pressure rod chute. At the same time, through the guiding action of the third guiding inclined surface and the fourth guiding inclined surface, the locking block is pushed to move towards the inner wall of the splint chute and finally presses on the inner wall of the splint chute to automatically lock the splint slider, so that the second splint is fixed on the sliding seat;

[0022] Step 5, the sliding seat is pulled by the pull rod on the force measuring table to move towards the copper core along the horizontal straight line direction, thereby driving the second clamping block to straighten the inner hose along the horizontal straight line direction. At the same time, the cylinder controls the two first splints to apply force simultaneously again to clamp and fix the inner hose from both sides of the inner hose;

[0023] Step 6, as the sliding seat moves, the top plate on the second V-shaped clamping block closest to the force measuring table will finally abut against the turned-up edge of the copper core and push the entire copper core out of the port of the inner hose. At this time, the pulling force used by the pull rod on the force measuring table is the actual pull-off force.

[0024] The copper core does not need to be fixed, and the accuracy of test results can be ensured for inner hoses and copper cores of different size specifications.

[0025] The beneficial effects of the present invention are as follows: the copper core does not need to be fixed, and the accuracy of test results can be ensured for inner hoses and copper cores of different size specifications; the test precision is improved; the clamping effect on the inner hose is improved; a good clamping effect is ensured; the operation is convenient and the degree of automation is high; the clamping precision during the pulling-off process is ensured. Description of the Drawings

[0026] Figure 1 is a schematic structural diagram of a shower hose;

[0027] Figure 2 is a perspective view of the present invention;

[0028] Figure 3 is a top view of the present invention;

[0029] Figure 4 is Figure 3 a cross-sectional view taken along line A-A in

[0030] Figure 5 is Figure 4 an enlarged view of B in

[0031] Figure 6 is a working state diagram of the present invention.

[0032] In the figure: 1. Inner hose, 2. Copper core, 3. Flanged edge, 4. Platform, 5. Sliding seat, 6. First clamping plate, 7. Second clamping plate, 8. Force measuring table, 9. Pull rod, 10. First V-shaped clamping block, 11. Second V-shaped clamping block, 12. Top plate, 13. First clamping block chute, 14. Second clamping block chute, 15. Clamping plate slider, 16. Clamping plate chute, 17. Card rod chute, 18. Card rod, 19. Moving iron core, 20. First spring, 21. Induction coil, 22. Card rod card slot, 23. Pressure rod chute, 24. Pressure rod, 25. Lock block through hole, 26. Lock block, 27. Second spring. Detailed Embodiments

[0033] The following further describes the present invention in conjunction with the drawings and specific embodiments.

[0034] As Figure 2In the described embodiment, a copper core pull-off test device for a shower pipe includes a platform 4. A sliding seat 5 is provided on the platform 4, and the sliding seat 5 is slidably connected to the platform 4 in the left-right direction. On the platform 4, there are a first clamping plate 6 and a second clamping plate 7. The first clamping plates 6 are symmetrically distributed on the front and rear sides of the platform 4 and are slidably connected to it in the front-rear direction. The second clamping plates 7 are symmetrically distributed on the front and rear sides of the sliding seat 5 and are slidably connected to it in the front-rear direction. A first clamping block is provided on the first clamping plate 6, and the first clamping block is arranged on the opposite side of the two first clamping plates 6. A second clamping block is provided on the second clamping plate 7, and the second clamping block is arranged on the opposite side of the two second clamping plates 7. The first clamping block and the second clamping block are located in the same plane. A force measuring platform 8 is also installed on the platform 4. A pull rod 9 connected to the sliding seat 5 is provided on the force measuring platform 8. The sliding seat 5 is located between the first clamping plate 6 and the force measuring platform 8.

[0035] The first clamping block includes a number of first V-shaped clamping blocks 10. The first V-shaped clamping blocks 10 are arranged in a straight line on the first clamping plate 6, and the first V-shaped clamping blocks 10 on the two first clamping plates 6 are staggeredly distributed. The bottom of the first V-shaped clamping block 10 is fixed on the first clamping plate 6. The open ends of the first V-shaped clamping blocks 10 on the two first clamping plates 6 are arranged oppositely. The second clamping block includes a number of second V-shaped clamping blocks 11. The second V-shaped clamping blocks 11 are arranged in a straight line on the second clamping plate 7, and the second V-shaped clamping blocks 11 on the two second clamping plates 7 are staggeredly distributed. The bottom of the second V-shaped clamping block 11 is fixed on the second clamping plate 7. The open ends of the second V-shaped clamping blocks 11 on the two second clamping plates 7 are arranged oppositely. The opening angle of the first V-shaped clamping block 10 is the same as the opening angle of the second V-shaped clamping block 11. The bottom of the first V-shaped clamping block 10 and the bottom of the second V-shaped clamping block 11 are located in the same plane. The straight line formed by the first V-shaped clamping blocks 10 on the first clamping plate 6 and the straight line formed by the second V-shaped clamping blocks 11 on the second clamping plate 7 are parallel to each other.

[0036] The surface of the first V-shaped clamping block 10 is provided with an anti-slip layer.

[0037] A top plate 12 is fixed on the second V-shaped clamping block 11 closest to the force measuring platform 8. The top plate 12 is fixed on the side edge of the second V-shaped clamping block 11 and is located on the side facing the force measuring platform 8.

[0038] The platform 4 is provided with a first clamping block chute 13 matching the first V-shaped clamping block 10. The top of one side edge of the first V-shaped clamping block 10 is placed in the first clamping block chute 13 and is slidably connected to it in the front-rear direction. The sliding seat 5 is provided with a second clamping block chute 14 matching the second V-shaped clamping block 11. The top of one side edge of the second V-shaped clamping block 11 is placed in the second clamping block chute 14 and is slidably connected to it in the front-rear direction.

[0039] As Figure 3 、 Figure 4 and Figure 5As shown in the figure, a clamping structure is provided between the first clamping plate 6 and the second clamping plate 7 on the same side of the platform 4. A clamping plate slider 15 is fixed on the second clamping plate 7. A clamping plate chute 16 matching the clamping plate slider 15 is provided on the sliding seat 5. The clamping plate sliders 15 on the two second clamping plates 7 are both placed in the clamping plate chute 16 and are slidably connected to it front and back. A locking structure is provided between the clamping plate slider 15 and the clamping plate chute 16, and a clamping plate reset structure is also provided in the clamping plate chute 16.

[0040] A clamping rod chute 17 is provided on the side of the second clamping plate 7 facing the first clamping plate 6. The clamping structure includes a clamping rod 18 slidably connected to the clamping rod chute 17. One end of the clamping rod 18 is placed in the clamping rod chute 17 and a moving iron core 19 is fixed on it. The moving iron core 19 is connected to the bottom surface of the clamping rod chute 17 through a first spring 20. An induction coil 21 is provided inside the second clamping plate 7 and outside the clamping rod chute 17. A clamping rod slot 22 matching the other end of the clamping rod 18 is provided on the side of the first clamping plate 6 facing the second clamping plate 7.

[0041] A pressure rod chute 23 is provided on the side wall of the clamping rod chute 17. The bottom of the pressure rod chute 23 is located inside the clamping plate slider 15. The locking structure includes a pressure rod 24 slidably connected to the pressure rod chute 23. A first guiding inclined surface is provided on the side wall of the clamping rod 18. A second guiding inclined surface matching the first guiding inclined surface is provided on the end surface of one end of the pressure rod 24. The first guiding inclined surface and the second guiding inclined surface are in contact with each other and are slidably connected. A locking block through hole 25 is provided on the bottom side wall of the pressure rod chute 23. A locking block 26 is slidably connected in the locking block through hole 25. A third guiding inclined surface is provided on the side wall of the other end of the pressure rod 24. A fourth guiding inclined surface matching the third guiding inclined surface is provided on the locking block 26. The third guiding inclined surface and the fourth guiding inclined surface are in contact with each other and are slidably connected.

[0042] The clamping plate reset structure includes a second spring 27 placed in the clamping plate chute 16. The two ends of the second spring 27 are respectively fixed on the two clamping plate sliders 15.

[0043] The present invention also provides a testing method for a shower pipe copper core pull-off testing device, including the following steps:

[0044] Step 1, the staff places the inner hose 1 between the first clamping plates 6 on both sides of the platform 4 (and also between the second clamping plates 7 on both sides of the platform 4), and makes the copper core 2 located between the sliding seat 5 and the force measuring table 8;

[0045] Step 2, the first clamping plates 6 on both sides of the platform 4 automatically move towards the inner hose 1 at the same time, and drive the second clamping plates 7 to move synchronously through the clamping structure, so that the first clamping block and the second clamping block clamp the inner hose 1 simultaneously (not tightly clamped). At this time, the clamped part of the inner hose 1 becomes a horizontal straight line shape;

[0046] Step 3: The induction coil 21 is automatically powered on to generate an induction magnetic field. Under the action of the magnetic field force, the moving iron core 19 drives the clamping rod 18 to move towards the bottom of the clamping rod chute 17, causing the other end of the clamping rod 18 to disengage from the clamping rod card slot 22, thereby releasing the clamping state of the first clamping plate 6 and the second clamping plate 7.

[0047] Step 4: During the process of the clamping rod 18 moving towards the bottom of the clamping rod chute 17, under the guiding action of the first guiding inclined surface and the second guiding inclined surface, the pressure rod 24 will be driven to move towards the bottom of the pressure rod chute 23. At the same time, under the guiding action of the third guiding inclined surface and the fourth guiding inclined surface, the locking block 26 will be pushed to move towards the inner wall of the clamping plate chute 16 and finally press on the inner wall of the clamping plate chute 16, automatically locking the clamping plate slider 15, so that the second clamping plate 7 is fixed on the sliding seat 5.

[0048] Step 5: The sliding seat 5 is pulled by the pull rod 9 on the force measuring platform 8 to move along the horizontal straight line direction towards the copper core 2, thereby driving the second clamping block to straighten the inner hose 1 along the horizontal straight line direction. At the same time, the air cylinder controls the two first clamping plates 6 on both sides to exert force simultaneously, clamping and fixing the inner hose 1 from both sides of the inner hose 1.

[0049] Step 6: As the sliding seat 5 moves, the top plate 12 on the second V-shaped clamping block 11 closest to the force measuring platform 8 will finally abut against the turned-out edge 3 of the copper core 2 and push the entire copper core 2 out of the port of the inner hose 1. At this time, the pulling force exerted by the pull rod 9 on the force measuring platform 8 is the actual pulling-off force.

[0050] The specific working principle is as follows:

[0051] In the initial state, the first clamping block on the first clamping plate 6 located in front of the platform 4 and the second clamping block on the second clamping plate 7 located in front of the platform 4 are on the same horizontal straight line. The first clamping block on the first clamping plate 6 located behind the platform 4 and the second clamping block on the second clamping plate 7 located behind the platform 4 are also on the same horizontal straight line.

[0052] When starting the test, the staff places the inner hose 1 between the first clamping plates 6 on both sides of the platform 4 (and also between the second clamping plates 7 on both sides of the platform 4), and makes the copper core 2 located between the sliding seat 5 and the force measuring platform 8.

[0053] Then the air cylinder controls the first clamping plates 6 on both sides of the platform 4 to move towards the inner hose 1 simultaneously, and drives the second clamping plate 7 to move synchronously through the clamping structure, so that the first clamping block and the second clamping block clamp the inner hose 1 simultaneously (not tightly). At this time, the clamped part of the inner hose 1 becomes a horizontal straight line shape (by the first clamping block and the second clamping block on both sides of the platform 4 moving towards the inner hose 1 simultaneously, the first clamping block and the second clamping block clamp the inner hose 1 simultaneously, and the inner hose 1 of different size specifications can be clamped into a horizontal straight line state). Its specific state is asFigure 6 As shown; at the same time, the induction coil 21 is automatically powered on to generate an induced magnetic field. Under the action of the magnetic field force, the moving iron core 19 drives the clamping rod 18 to move towards the bottom of the clamping rod chute 17, so that the other end of the clamping rod 18 disengages from the clamping rod card slot 22, thereby releasing the clamping state of the first clamping plate 6 and the second clamping plate 7. During the process of the clamping rod 18 moving towards the bottom of the clamping rod chute 17, through the guiding action of the first guiding inclined surface and the second guiding inclined surface, it will drive the pressure rod 24 to move towards the bottom of the pressure rod chute 23. At the same time, through the guiding action of the third guiding inclined surface and the fourth guiding inclined surface, it will push the locking block 26 towards the inner wall of the clamping plate chute 16 and finally press on the inner wall of the clamping plate chute 16 to automatically lock the clamping plate slider 15, so that the second clamping plate 7 is fixed on the sliding seat 5.

[0054] After that, the sliding seat 5 is pulled by the pull rod 9 on the force measuring platform 8, so that it moves towards the copper core 2 along the horizontal straight line direction, and then drives the second clamping block to straighten the inner hose 1 along the horizontal straight line direction (by pulling the sliding seat 5 along the horizontal straight line direction by the pull rod 9 to make it move towards the copper core 2, the second clamping block on it can still straighten the inner hose 1 along the same horizontal straight line direction); at the same time, the air cylinder controls the two first clamping plates 6 to exert force simultaneously again, and clamps and fixes the inner hose 1 from both sides (by controlling the two first clamping plates 6 to exert force simultaneously to clamp and fix the inner hose 1 from both sides, the geometric center line of the fixed inner hose 1 can still remain unchanged and is still in the state of the same horizontal straight line).

[0055] Since the inner hose 1 has been fixed by the first clamping plate 6, with the movement of the sliding seat 5, the top plate 12 on the V-shaped second clamping block 11 closest to the force measuring platform 8 will finally abut against the flanging 3 of the copper core 2 and push the entire copper core 2 out of the port of the inner hose 1. At this time, the pulling force used by the pull rod 9 on the force measuring platform 8 is the accurate actual pulling-off force.

Claims

1. A copper core pull-off test device for a shower pipe, characterized in that It includes a platform (4) on which a sliding seat (5) is provided. The sliding seat (5) is slidably connected to the platform (4) in the left - right direction. On the platform (4), there are a first clamping plate (6) and a second clamping plate (7). The first clamping plate (6) is symmetrically distributed on the front and rear sides of the platform (4) and is slidably connected to it in the front - rear direction. The second clamping plate (7) is symmetrically distributed on the front and rear sides of the sliding seat (5) and is slidably connected to it in the front - rear direction. On the first clamping plate (6), there is a first clamping block. The first clamping block is arranged on the opposite surface of the two first clamping plates (6). On the second clamping plate (7), there is a second clamping block. The second clamping block is arranged on the opposite surface of the two second clamping plates (7). The first clamping block and the second clamping block are located in the same plane. On the platform (4), a force - measuring table (8) is also installed. On the force - measuring table (8), there is a pull rod (9) connected to the sliding seat (5). The sliding seat (5) is located between the first clamping plate (6) and the force - measuring table (8). The first clamping block includes a number of V - shaped clamping blocks one (10). The V - shaped clamping blocks one (10) are arranged in a straight line on the first clamping plate (6), and the V - shaped clamping blocks one (10) on the two first clamping plates (6) are staggered. The bottom of the V - shaped clamping block one (10) is fixed on the first clamping plate (6). The open ends of the V - shaped clamping blocks one (10) on the two first clamping plates (6) are arranged oppositely. The second clamping block includes a number of V - shaped clamping blocks two (11). The V - shaped clamping blocks two (11) are arranged in a straight line on the second clamping plate (7), and the V - shaped clamping blocks two (11) on the two second clamping plates (7) are staggered. The bottom of the V - shaped clamping block two (11) is fixed on the second clamping plate (7). The open ends of the V - shaped clamping blocks two (11) on the two second clamping plates (7) are arranged oppositely. The opening angle of the V - shaped clamping block one (10) is the same as the opening angle of the V - shaped clamping block two (11). The bottoms of the V - shaped clamping block one (10) and the V - shaped clamping block two (11) are located in the same plane. The straight line formed by the V - shaped clamping blocks one (10) on the first clamping plate (6) is parallel to the straight line formed by the V - shaped clamping blocks two (11) on the second clamping plate (7). On the V - shaped clamping block two (11) closest to the force - measuring table (8), a top plate (12) is fixed. The top plate (12) is fixed on the side edge of the V - shaped clamping block two (11) and is on the side facing the force - measuring table (8). Between the first clamping plate (6) and the second clamping plate (7) on the same side of the platform (4), there is a clamping structure. On the second clamping plate (7), a clamping plate slider (15) is fixed. On the sliding seat (5), there is a clamping plate chute (16) matching the clamping plate slider (15). The clamping plate sliders (15) on the two second clamping plates (7) are both placed in the clamping plate chute (16) and are slidably connected to it in the front - rear direction. There is a locking structure between the clamping plate slider (15) and the clamping plate chute (16). In the clamping plate chute (16), there is also a clamping plate reset structure. On the side of the second clamping plate (7) facing the first clamping plate (6), there is a clamping rod chute (17). The clamping structure includes a clamping rod (18) slidably connected to the clamping rod chute (17).One end of the clamping rod (18) is placed in the clamping rod chute (17), and a moving iron core (19) is fixed thereon. The moving iron core (19) is connected to the bottom surface of the clamping rod chute (17) through a first spring (20). An induction coil (21) is provided inside the second clamping plate (7) and outside the clamping rod chute (17). A clamping rod slot (22) matching the other end of the clamping rod (18) is provided on the side surface of the first clamping plate (6) facing the second clamping plate (7). A pressure rod chute (23) is provided on the side wall of the clamping rod chute (17). The bottom of the pressure rod chute (23) is located inside the clamping plate slider (15). The locking structure includes a pressure rod (24) slidably connected to the pressure rod chute (23). A first guiding inclined surface is provided on the side wall of the clamping rod (18). A second guiding inclined surface matching the first guiding inclined surface is provided on the end surface of one end of the pressure rod (24). The first guiding inclined surface and the second guiding inclined surface are in contact with each other and are slidably connected. A locking block through hole (25) is provided on the bottom side wall of the pressure rod chute (23). A locking block (26) is slidably connected in the locking block through hole (25). A third guiding inclined surface is provided on the side wall of the other end of the pressure rod (24). A fourth guiding inclined surface matching the third guiding inclined surface is provided on the locking block (26). The third guiding inclined surface and the fourth guiding inclined surface are in contact with each other and are slidably connected., 2. The copper core pull-off test device for a shower pipe according to claim 1, wherein The surface of the first V-shaped clamping block (10) is provided with an anti-slip layer.

3. The copper core pull-off test device for a shower pipe according to claim 1, characterized in that, A first clamping block chute (13) matching the first V-shaped clamping block (10) is provided on the platform (4). The top of one side of the first V-shaped clamping block (10) is placed in the first clamping block chute (13) and is slidably connected to the front and back thereof. A second clamping block chute (14) matching the second V-shaped clamping block (11) is provided on the sliding seat (5). The top of one side of the second V-shaped clamping block (11) is placed in the second clamping block chute (14) and is slidably connected to the front and back thereof.

4. A copper core pull-off test device for a shower pipe according to claim 1, characterized in that, The splint reset structure includes a second spring (27) placed in the splint chute (16), and both ends of the second spring (27) are respectively fixed on two splint sliders (15).

5. The testing method of a copper core pull-off testing device for a shower pipe according to claim 1, characterized in that, It includes the following steps: Step 1: The staff places the inner hose (1) between the first splints (6) on both sides of the platform (4). At the same time, the inner hose (1) is also located between the second splints (7) on both sides of the platform (4), and the copper core (2) is located between the sliding seat (5) and the force measuring table (8). Step 2: The first splints (6) on both sides of the platform (4) automatically move towards the inner hose (1) simultaneously, and drive the second splints (7) to move synchronously through the clamping structure, so that the first clamping block and the second clamping block simultaneously clamp but do not tightly clamp the inner hose (1). At this time, the clamped part of the inner hose (1) becomes a horizontal straight line shape. Step 3: The induction coil (21) is automatically powered on to generate an induction magnetic field. The moving iron core (19) drives the clamping rod (18) to move towards the bottom of the clamping rod chute (17) under the action of the magnetic force, so that the other end of the clamping rod (18) disengages from the clamping rod card slot (22), thereby releasing the clamping state of the first splint (6) and the second splint (7). Step 4: During the process of the clamping rod (18) moving towards the bottom of the clamping rod chute (17), through the guiding action of the first guiding inclined surface and the second guiding inclined surface, the pressing rod (24) will be driven to move towards the bottom of the pressing rod chute (23). At the same time, through the guiding action of the third guiding inclined surface and the fourth guiding inclined surface, the locking block (26) will be pushed to move towards the inner wall of the splint chute (16) and finally press on the inner wall of the splint chute (16), automatically locking the splint slider (15), so that the second splint (7) is fixed on the sliding seat (5). Step 5: The sliding seat (5) is pulled through the pull rod (9) on the force measuring table (8) to move along the horizontal straight line direction towards the copper core (2), thereby driving the second clamping block to straighten the inner hose (1) along the horizontal straight line direction. At the same time, the first splints (6) on both sides are controlled to apply force simultaneously again to clamp and fix the inner hose (1) from both sides. Step 6: As the sliding seat (5) moves, the top plate (12) on the second V-shaped clamping block (11) closest to the force measuring table (8) will finally abut against the turned-out edge (3) of the copper core (2) and push the entire copper core (2) out of the port of the inner hose (1). At this time, the pulling force used by the pull rod (9) on the force measuring table (8) is the actual pulling-off force.

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