A high-efficiency tensile testing device for quality inspection of hollow boards.

Abstract

This utility model discloses a high-efficiency tensile testing device for hollow board quality inspection, belonging to the field of hollow board quality inspection technology. It includes a tensile testing machine body, on which two symmetrically arranged double-headed clamping devices are fixedly connected to the upper and lower clamping seats. Each double-headed clamping device includes a horizontally arranged base shell fixedly connected to the clamping seats. The base shell is provided with a spacing adjustment mechanism, and two symmetrically arranged clamping mechanisms are fixedly connected to both ends of the spacing adjustment mechanism. In this utility model, by setting up a double-headed clamping device, the spacing adjustment mechanism can adjust the spacing between the two clamping mechanisms to accommodate hollow boards of different widths. Furthermore, by using two sets of clamping mechanisms to clamp and fix the ends of the hollow board, the force is more evenly distributed, the clamping and fixing effect is better, and the risk of damaging the clamping part of the hollow board is reduced, thereby ensuring the efficiency of the tensile testing for hollow board quality inspection.

Description

Technical Field

[0001] This utility model belongs to the field of hollow board quality testing technology, specifically a high-efficiency tensile testing device for hollow board quality testing. Background Technology

[0002] Hollow core board (also called hollow corrugated board, multi-wall board, double-wall board) is a new type of material that is lightweight (hollow structure), non-toxic, non-polluting, waterproof, shockproof, anti-aging, corrosion-resistant, and available in a variety of colors. Compared to cardboard products, hollow core board has advantages such as moisture resistance and corrosion resistance. Compared to injection-molded products, hollow core board has advantages such as shock resistance, flexible structural design, and no need for injection molds. At the same time, by controlling the raw materials, antistatic and conductive masterbatches can be flexibly added to produce plastic hollow core boards with conductive and antistatic functions. After production, hollow core boards need to undergo tensile testing.

[0003] However, existing tensile testing devices use a single clamping head structure for the clamping devices at both ends of the plate. If the width of the plate is large, the clamping part is small, the force is not uniform, and the clamped part of the plate is prone to breakage, resulting in test failure and affecting the efficiency of tensile testing for hollow board quality inspection. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides the following technical solution: a high-efficiency tensile testing device for hollow board quality testing, comprising a tensile testing machine body, wherein two symmetrically arranged double-headed clamping devices are fixedly connected to the upper and lower clamping seats of the tensile testing machine body, each double-headed clamping device comprising a base strip shell fixedly connected to the clamping seats and arranged horizontally, wherein a spacing adjustment mechanism is provided on the base strip shell, and two symmetrically arranged clamping mechanisms are fixedly connected to both ends of the spacing adjustment mechanism;

[0005] The spacing adjustment mechanism includes a stepper motor fixed in the middle of the side wall of the base strip shell. The main shaft of the stepper motor passes through the base strip shell and is fixedly connected to a first bevel gear. The inner walls of both ends of the base strip shell are rotatably connected to two horizontally arranged lead screws through bearing seats. The near ends of the two lead screws are fixedly connected to two second bevel gears that mesh with the first bevel gear. The two lead screws are threaded with two symmetrically arranged nut blocks. The far ends of the two nut blocks are fixedly connected to two symmetrically arranged connecting rods. The two sets of connecting rods pass through the side walls of both ends of the base strip shell and are fixedly connected to two clamping mechanisms.

[0006] As a further embodiment of this utility model: the clamping mechanism includes a cover shell fixedly connected to a connecting rod, an electric push rod fixedly connected to the upper side wall of the cover shell, the driving end of the electric push rod penetrating into the cover shell and fixedly connected to a moving block, two symmetrically arranged pull rods hinged to both ends of the moving block, a crossbar fixedly connected to the lower part of the inner wall of the cover shell, two symmetrically arranged sliding sleeves sleeved on the crossbar, and clamping plates fixedly connected to the lower ends of the two sliding sleeves extending to the bottom of the cover shell.

[0007] As a further improvement of this utility model, anti-slip pads are fixedly connected to the opposite sides of the two clamping plates.

[0008] As a further embodiment of this utility model, the inner wall of the base shell is slidably connected to the outer wall of the nut block.

[0009] As a further improvement of this utility model, the base shell has two through holes on each of its two end sidewalls, and two sets of connecting rods pass through the two through holes at each end respectively.

[0010] As a further embodiment of this utility model, the dual-head clamping device and the spacing adjustment mechanism are both electrically connected to the power supply control terminal of the tensile testing machine body.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, by setting a spacing adjustment mechanism, can drive the first bevel gear to rotate when the stepper motor is started. Since the first bevel gear meshes with two second bevel gears respectively, it drives the two lead screws to rotate in opposite directions at the same time. At this time, the two nut blocks are displaced in opposite directions, which in turn drives the two clamping mechanisms fixed to the two sets of connecting rods to displace in opposite directions. The spacing between the two clamping mechanisms can be adjusted according to the width of the hollow board, so as to be suitable for clamping and fixing hollow boards of different widths. The force is more uniform, the clamping stability is better, and the risk of damaging the clamping part of the hollow board can be reduced, thereby ensuring the efficiency of tensile testing for hollow board quality inspection.

[0013] 2. This utility model, by setting two sets of clamping mechanisms, activates the electric push rod to retract, which can pull the moving block upward, thereby pulling the two pull rods to swing and displace. At this time, the two sliding sleeves can be pulled to move towards each other on the crossbar, thereby driving the two clamping plates to press against both sides of the end of the hollow plate until it is clamped and fixed. The operation is simple and the fixation is reliable. Moreover, by using two sets of clamping mechanisms to clamp and fix the end of the hollow plate, the force is more even and the clamping and fixing effect is better. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional enlarged structural diagram of the dual-head clamping device of this utility model;

[0016] Figure 3 This is a side view sectional structural diagram of the base shell of this utility model;

[0017] Figure 4 This is a three-dimensional cross-sectional view of the clamping mechanism of this utility model.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Tensile testing machine body; 2. Base strip shell; 3. Stepper motor; 4. First bevel gear; 5. Lead screw; 6. Second bevel gear; 7. Nut block; 8. Connecting rod; 9. Cover plate shell; 10. Electric push rod; 11. Moving block; 12. Pull rod; 13. Crossbar; 14. Sliding sleeve; 15. Clamping plate; 16. Anti-slip mat. Detailed Implementation

[0020] Please see Figures 1-4 This embodiment provides a high-efficiency tensile testing device for hollow board quality inspection, which includes a tensile testing machine body 1. The tensile testing machine body 1 is a common tensile testing equipment, such as the WDS-200 hollow board tensile testing machine, which can perform tensile testing on hollow boards. Two symmetrically arranged double-headed clamping devices are fixedly connected to the upper and lower clamping seats of the tensile testing machine body 1. The clamping seats of the tensile testing machine body 1 refer to the mounting seats for installing clamps for holding hollow boards, which can be fixed by bolts. The double-headed clamping device includes a base shell 2 fixedly connected to the clamping seats and arranged horizontally. The base shell 2 is provided with a spacing adjustment mechanism. Two symmetrically arranged clamping mechanisms are fixedly connected to both ends of the spacing adjustment mechanism. The two clamps clamp and fix the ends of the hollow board, resulting in more uniform force and better clamping and fixing effect.

[0021] The spacing adjustment mechanism includes a stepper motor 3 fixed in the middle of the side wall of the base strip shell 2. The main shaft of the stepper motor 3 passes through the base strip shell 2 and is fixedly connected to a first bevel gear 4. Two horizontally arranged lead screws 5 are rotatably connected to the inner walls of both ends of the base strip shell 2 via bearing seats. Two second bevel gears 6, respectively meshing with the first bevel gear 4, are fixedly connected to the near ends of the two lead screws 5. Two symmetrically arranged nut blocks 7 are threaded onto the two lead screws 5. Two symmetrically arranged connecting rods 8 are fixedly connected to the far ends of the two nut blocks 7. The two sets of connecting rods 8 pass through the side walls of both ends of the base strip shell 2 and are fixedly connected to two clamping mechanisms. When the stepper motor is started... 3. During operation, the first bevel gear 4 can be driven to rotate. Since the first bevel gear 4 meshes with two second bevel gears 6 respectively, it drives the two lead screws 5 to rotate in opposite directions simultaneously. At this time, since the two lead screws 5 are threadedly connected to two nut blocks 7 respectively, the two nut blocks 7 are displaced in opposite directions, which in turn drives the two clamping mechanisms fixed to the two sets of connecting rods 8 to displace in opposite directions. The distance between the two clamping mechanisms can be adjusted according to the width of the hollow board to make it suitable for clamping and fixing hollow boards of different widths. The force is more uniform, the clamping stability is better, and the risk of damaging the clamping part of the hollow board can be reduced, thereby ensuring the efficiency of tensile testing for hollow board quality inspection.

[0022] like Figure 4 As shown: The clamping mechanism includes a cover shell 9 fixedly connected to the connecting rod 8. An electric push rod 10 is fixedly connected to the upper side wall of the cover shell 9. The driving end of the electric push rod 10 passes through the cover shell 9 and is fixedly connected to a moving block 11. Two symmetrically arranged pull rods 12 are hinged to both ends of the moving block 11. A crossbar 13 is fixedly connected to the lower part of the inner wall of the cover shell 9. Two symmetrically arranged sliding sleeves 14 are sleeved on the crossbar 13. The lower ends of the two sliding sleeves 14 extend to the bottom of the cover shell 9 and are fixedly connected to clamping plates 15. When the end of the hollow plate is placed between the two clamping plates 15, the electric push rod 10 is activated to retract, which can pull the moving block 11 to move upward, and then pull the two pull rods 12 to swing and move. At this time, the two sliding sleeves 14 can be pulled to move towards each other on the crossbar 13, which in turn drives the two clamping plates 15 to press against both sides of the end of the hollow plate until it is clamped and fixed. The operation is simple and the fixation is reliable.

[0023] like Figure 4 As shown: Anti-slip pads 16 are fixedly connected to the opposite sides of the two clamping plates 15, which can clamp the hollow plate more stably and reliably.

[0024] like Figure 3 As shown: The inner wall of the base shell 2 is slidably connected to the outer wall of the nut block 7, which can prevent the nut block 7 from rotating axially.

[0025] like Figure 3As shown: Two through holes are opened on both ends of the base shell 2. Two sets of connecting rods 8 are respectively set through the two through holes at each end to facilitate the displacement of the connecting rods 8.

[0026] like Figure 1 As shown: The double-head clamping device and the spacing adjustment mechanism are both electrically connected to the power supply control terminal of the tensile testing machine body 1, which facilitates operation. The circuit involved is existing technology, which can be fully implemented by those skilled in the art, and there is no need to elaborate.

[0027] Working Principle: When using this device to perform a tensile test on a hollow board, firstly, when the stepper motor 3 is started, it drives the first bevel gear 4 to rotate. Since the first bevel gear 4 meshes with two second bevel gears 6, it drives the two lead screws 5 to rotate simultaneously in opposite directions. At this time, since the two lead screws 5 are threadedly connected to two nut blocks 7, the two nut blocks 7 move in opposite directions, thereby driving the two clamping mechanisms fixed to the two sets of connecting rods 8 to move in opposite directions. The distance between the two clamping mechanisms can be adjusted according to the width of the hollow board to achieve the desired effect. Using hollow boards of different widths for clamping and fixing results in more uniform force distribution and better clamping stability, reducing the risk of damaging the clamping part of the hollow board and thus ensuring the efficiency of tensile testing for hollow board quality inspection. When the end of the hollow board is placed between the two clamping plates 15, the electric push rod 10 is activated to retract, which can pull the moving block 11 upward, thereby pulling the two pull rods 12 to swing and displace. At this time, the two sliding sleeves 14 can be pulled to move towards each other on the crossbar 13, thereby driving the two clamping plates 15 to press against both sides of the end of the hollow board until it is clamped and fixed.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency tensile testing device for hollow board quality inspection, comprising a tensile testing machine body (1), characterized in that, Two symmetrically arranged double-headed clamping devices are fixedly connected to the upper and lower clamping seats of the tensile testing machine body (1). The double-headed clamping device includes a base strip shell (2) fixedly connected to the clamping seat and arranged horizontally. The base strip shell (2) is provided with a spacing adjustment mechanism. Two symmetrically arranged clamping mechanisms are fixedly connected to both ends of the spacing adjustment mechanism. The spacing adjustment mechanism includes a stepper motor (3) fixed in the middle of the side wall of the base shell (2). The main shaft of the stepper motor (3) passes through the base shell (2) and is fixedly connected to a first bevel gear (4). The inner walls of both ends of the base shell (2) are rotatably connected to two horizontally arranged lead screws (5) through bearing seats. The ends of the two lead screws (5) that are close to each other are fixedly connected to two second bevel gears (6) that are respectively meshed with the first bevel gear (4). The two lead screws (5) are threaded with two symmetrically arranged nut blocks (7). The sides of the two nut blocks (7) that are far apart are fixedly connected to two symmetrically arranged connecting rods (8). The two sets of connecting rods (8) pass through the side walls of both ends of the base shell (2) and are fixedly connected to two clamping mechanisms respectively.

2. The efficient tensile testing device for hollow board quality testing according to claim 1, characterized in that, The clamping mechanism includes a cover shell (9) fixedly connected to the connecting rod (8). An electric push rod (10) is fixedly connected to the upper side wall of the cover shell (9). The driving end of the electric push rod (10) passes through the cover shell (9) and is fixedly connected to a moving block (11). Two symmetrically arranged pull rods (12) are hinged to both ends of the moving block (11). A crossbar (13) is fixedly connected to the lower part of the inner wall of the cover shell (9). Two symmetrically arranged sliding sleeves (14) are sleeved on the crossbar (13). The lower ends of the two sliding sleeves (14) extend to the bottom of the cover shell (9) and are fixedly connected to clamping plates (15).

3. The efficient tensile testing device for hollow board quality inspection according to claim 2, characterized in that, Anti-slip pads (16) are fixedly connected to the opposite sides of the two clamps (15).

4. The efficient tensile testing device for hollow board quality inspection according to claim 1, characterized in that, The inner wall of the base shell (2) is slidably connected to the outer wall of the nut block (7).

5. The efficient tensile testing device for hollow board quality testing according to claim 1, characterized in that, The base shell (2) has two through holes on both sides of its end walls, and two sets of connecting rods (8) pass through the two through holes at each end.

6. The efficient tensile testing device for hollow board quality inspection according to claim 1, characterized in that, Both the dual-head clamping device and the spacing adjustment mechanism are electrically connected to the power supply control terminal of the tensile testing machine body (1).

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