Rubber part quality detection device

Abstract

The utility model relates to the technical field of rubber part quality inspection, in particular to a rubber part quality detection device which comprises a detection device body, the detection device body comprises a workbench, a top frame is arranged on the top of the workbench through stand columns, a hydraulic oil cylinder is arranged above the top frame, clamping devices are arranged at the top end of a piston rod of the hydraulic oil cylinder and the top face of the workbench, and the clamping devices are connected with chucks. When a test block is inserted between the eccentric wheels, the eccentric wheels rotate in the direction far away from the circle center of the stress table, the distance between the eccentric wheels is increased, meanwhile, the reset springs are extruded, and the eccentric wheels are always in contact with the test block under the action of the elastic force of the reset springs. When the test block is pulled and moves in the direction away from the stress table, the eccentric wheels are driven to rotate towards the center of the stress table under the action of friction force, the distance between the eccentric wheels is reduced, the clamping force on the test block is increased, and the test block can be prevented from being disengaged due to tension reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber component quality inspection, in particular to a rubber component quality inspection device. Background Art

[0002] Rubber is a high polymer material with reversible deformation. It is elastic at room temperature and can produce large deformation under very small external force. It can return to its original shape after the external force is removed. Due to its special properties, rubber is widely used in various aspects of industry and life. Rubber materials and products have strict quality requirements, such as tensile strength, elastic modulus, elongation, aging resistance, etc. Among them, the tensile strength of rubber is generally tested using a tensile testing machine. The two ends of the rubber part are clamped by a clamping mechanism, and a certain tensile force is applied to the two ends of the rubber part to measure the deformation of the rubber part, the tensile force at the break, and other data.

[0003] The clamping device of the existing tensile testing machine generally uses a clamping plate or a clamping claw, and uses a screw to drive the clamping claw or the clamping plate to approach each other to clamp the test block. Since rubber itself has high elasticity, after the two ends of the test block are subjected to tension, the length of the test block will increase, but the diameter of the test block will shrink, and the clamping claw or the clamping plate will not move during the experiment, so there is a risk that the test block will fall out of the clamping device. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a rubber component quality detection device.

[0005] The technical solution of the utility model is:

[0006] A rubber part quality detection device, comprising:

[0007] The detection device comprises a workbench, a top frame is provided on the top of the workbench through a column, a hydraulic cylinder is provided above the top frame, a clamping device is provided on the top of the hydraulic cylinder piston rod and the top surface of the workbench, and the clamping device is connected to a chuck;

[0008] The clamping device comprises a force-bearing platform, and a plurality of clamping driving devices are arranged above the force-bearing platform, each of the clamping driving devices is connected to a clamping head, and the clamping driving device is used to drive the clamping head to approach or move away from the center of the force-bearing platform;

[0009] The chuck includes a mounting box, which is connected to the clamping drive device. An eccentric wheel is rotatably mounted inside the mounting box. The eccentric wheel head is connected to a return spring through a spring mounting frame. The return spring is used to apply an elastic force to the eccentric wheel head in the direction of the center of the force-bearing platform.

[0010] Preferably, a plurality of guide grooves are evenly arranged on the force-bearing platform, and the clamping drive device is slidably installed in the guide grooves.

[0011] Preferably, the clamping drive device includes a guide slider, and the mounting box is fixedly mounted on the top surface of the guide slider.

[0012] Preferably, an adjusting screw is provided in the middle of the guide sliding block, and the adjusting screw is rotatably mounted in the center of the guide groove through a fixing block, and an adjusting motor is provided at the head of the adjusting screw passing through the fixing block.

[0013] Preferably, the installation box comprises a bottom box, the bottom box is fixedly mounted on the top surface of the guide slider, and a top cover is fixedly mounted on the front side of the bottom box.

[0014] Preferably, a rotating groove is provided inside the bottom box, a rotating column is provided on one side of the rotating groove close to the center of the force-bearing platform, and the eccentric wheel is rotatably mounted on the rotating column.

[0015] Preferably, a spring mounting column is provided on the side of the rotating groove away from the center of the force-bearing platform, and the tail of the reset spring is fixedly connected to the spring mounting column.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model utilizes the elastic force of a reset spring to push the eccentric wheel to rotate toward the center of the force-bearing platform. When a test block is inserted between the eccentric wheels, the eccentric wheel rotates away from the center of the force-bearing platform, the distance between the eccentric wheels increases, and the reset spring is squeezed at the same time. Under the action of the elastic force of the reset spring, the eccentric wheel is always in contact with the test block. When the test block is subjected to a pulling force and moves in a direction away from the force-bearing platform, the eccentric wheel is driven to rotate toward the center of the force-bearing platform under the action of the friction force, the distance between the eccentric wheels decreases, the clamping force on the test block increases, and the test block can be prevented from detaching due to shrinkage due to tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the detection device in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the clamping device in the utility model;

[0021] Figure 4 It is an exploded schematic diagram of the chuck structure in the utility model.

[0022] The meaning of each number in the figure is:

[0023] 1. Detection device; 11. Workbench; 12. Column; 13. Top frame; 14. Hydraulic cylinder;

[0024] 2. Clamping device; 21. Force bearing platform; 22. Guide groove; 23. Guide slide block; 24. Fixed block; 25. Adjusting screw; 26. Adjusting motor;

[0025] 3. Chuck; 31. Bottom box; 32. Top cover; 33. Rotating groove; 34. Rotating column; 35. Eccentric wheel; 36. Spring mounting column; 37. Reset spring; 38. Spring mounting frame. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] Embodiment 1:

[0029] See also Figure 1-4 The utility model describes the above technical solution in detail through the following embodiments:

[0030] A rubber part quality detection device, comprising:

[0031] The detection device 1 comprises a workbench 11, a top frame 13 is provided on the top of the workbench 11 through a column 12, a hydraulic cylinder 14 is provided above the top frame 13, a clamping device 2 is provided on the top of the piston rod of the hydraulic cylinder 14 and the top surface of the workbench 11, and the clamping device 2 is connected to a chuck 3;

[0032] The column 12 is fixedly mounted on the top surface of the workbench 11 by bolts, the top frame 13 is fixedly mounted on the top of the column 12 by bolts, and the hydraulic cylinder 14 is fixedly mounted on the center of the top surface of the top frame 13 by bolts. The piston rod of the hydraulic cylinder 14 penetrates the top frame 13. By controlling the extension or retraction of the piston rod of the hydraulic cylinder 14, the upper clamping device 2 and the chuck 3 can be driven to approach or move away from the lower clamping device 2 and the chuck 3.

[0033] The clamping device 2 includes a force-bearing platform 21 , and a plurality of clamping driving devices are arranged above the force-bearing platform 21 . Each clamping driving device is connected to a clamp 3 , and the clamping driving device is used to drive the clamp 3 to approach or move away from the center of the force-bearing platform 21 .

[0034] The force-bearing platform 21 is integrally formed of metal material. The upper force-bearing platform 21 is threadedly connected to the piston rod of the hydraulic oil cylinder 14, and the axis of the upper force-bearing platform 21 coincides with the axis of the hydraulic oil cylinder 14. The axis of the lower force-bearing platform 21 coincides with the axis of the upper force-bearing platform 21.

[0035] A plurality of guide grooves 22 are evenly arranged on the force-bearing platform 21 , and the clamping drive device is slidably installed in the guide grooves 22 .

[0036] There are three guide grooves 22 , and the three guide grooves 22 are evenly arranged relative to the center of the force-bearing platform 21 .

[0037] The clamping drive comprises a guide slide 23 .

[0038] The guide slider 23 is clamped with the force-bearing platform 21 and can slide along the guide groove 22 . A guide slider 23 is slidably installed in each guide groove 22 .

[0039] An adjusting screw 25 is threadedly connected to the middle of the guide slide block 23 . The adjusting screw 25 is rotatably mounted in the center of the guide groove 22 through a fixing block 24 . An adjusting motor 26 is disposed at the head of the adjusting screw 25 through the fixing block 24 .

[0040] The fixing block 24 is fixedly mounted on the outer side of the top surface of the workbench 11 by bolts, and the number of the fixing blocks 24 is equal to the guide groove 22. The axis of the adjusting screw 25 coincides with the axis of the guide groove 22, and the tail of the adjusting screw 25 faces the center of the force-bearing platform 21.

[0041] The adjusting motor 26 is fixedly mounted on the side of the fixing block 24 by bolts, and the output shaft of the adjusting motor 26 is fixedly connected to the adjusting screw 25 by a coupling. The adjusting motor 26 adopts a servo motor, and the adjusting motor 26 can drive the adjusting screw 25 to rotate.

[0042] Since the adjusting screw 25 is threadedly connected to the guide slider 23 , when the adjusting screw 25 rotates, it can drive the guide slider 23 to slide along the guide groove 22 .

[0043] The chuck 3 includes a mounting box, which is connected to the clamping drive device, and an eccentric wheel 35 is rotatably mounted inside the mounting box. The head of the eccentric wheel 35 is connected to a return spring 37 through a spring mounting bracket 38. The return spring 37 is used to apply an elastic force to the head of the eccentric wheel 35 in the direction of the center of the force-bearing platform 21. The mounting box is fixedly mounted on the top surface of the guide slider 23.

[0044] The spring mounting frame 38 is welded and installed on the head of the eccentric wheel 35, and the head of the return spring 37 is on the spring mounting frame 38.

[0045] The installation box includes a bottom box 31 , which is fixedly mounted on the top surface of the guide slider 23 , and a top cover 32 is fixedly mounted on the front side of the bottom box 31 .

[0046] The bottom box 31 is fixedly mounted on the top surface of the guide slider 23 by bolts. The top cover 32 is fixedly mounted on the front side of the bottom box 31 by bolts. The bottom box 31 and the top cover 32 are parallel to the axis of the guide slider 23. The guide slider 23 slides along the guide groove 22, and can drive the bottom box 31 and the top cover 32 to approach or move away from the center of the force-bearing platform 21.

[0047] A rotating groove 33 is provided inside the bottom box 31 . A rotating column 34 is welded to one side of the rotating groove 33 close to the center of the force-bearing platform 21 . An eccentric wheel 35 is rotatably mounted on the rotating column 34 .

[0048] The opening of the rotating groove 33 faces the center of the force-bearing platform 21. The rotating column 34 is used to limit the rotation axis of the eccentric wheel 35. The rotation axis of the eccentric wheel 35 is close to the tail of the eccentric wheel 35, so when the head of the eccentric wheel 35 rotates toward the center of the force-bearing platform 21, the distance between the eccentric wheels 35 on the same force-bearing platform 21 decreases.

[0049] A spring mounting column 36 is provided on one side of the rotating groove 33 away from the center of the force-bearing platform 21 , and the tail end of the return spring 37 is fixedly connected to the spring mounting column 36 .

[0050] The tail of the return spring 37 is sleeved on the spring mounting column 36. When the eccentric wheel 35 is affected by the external force and rotates away from the center of the force receiving platform 21, the return spring 37 is compressed. When the external force disappears or decreases, the elastic force of the return spring 37 can make the eccentric wheel 35 rotate toward the center of the force receiving platform 21.

[0051] When the operator of this embodiment uses the device, he controls the piston rod of the hydraulic cylinder 14 to retract, driving the upper clamping device 2 and the clamping head 3 to move upward, so that the upper clamping device 2 and the lower clamping device 2 are separated from each other.

[0052] The adjusting motor 26 is started to drive the adjusting screw 25 to rotate, thereby driving the guide slider 23 to move toward the center of the force-bearing platform 21 , and further driving the chuck 3 to move toward the center of the force-bearing platform 21 .

[0053] When it is known that the radius of the circle formed by the three eccentric wheels 35 is smaller than the radius of the test block, the operation of the regulating motor 26 is stopped.

[0054] The upper clamping head 3 is also adjusted in the above manner.

[0055] The test block is inserted from above the center of the three eccentric wheels 35, the test block presses the eccentric wheels 35, and the eccentric wheels 35 rotate in the direction of the return spring 37 to press the return spring 37. Under the elastic force of the return spring 37, the eccentric wheel 35 fits with the surface of the test block.

[0056] The insertion is stopped until the bottom of the test block contacts the top surface of the force-bearing platform 21 .

[0057] The piston rod of the hydraulic cylinder 14 is controlled to extend, driving the upper clamping device 2 and the chuck 3 to move downward, and the test block is inserted from the center of the three eccentric wheels 35 above until the top of the test block abuts against the bottom surface of the upper force-bearing platform 21, and the hydraulic cylinder 14 stops working.

[0058] The piston rod of the hydraulic cylinder 14 is controlled to be retracted again, driving the upper clamping device 2 and the clamping head 3 to move upward. At this time, the test block moves upward under the action of the friction force.

[0059] At the same time, under the action of friction and the elastic force of the return spring 37, the head of the eccentric wheel 35 rotates toward the test block, the distance between the eccentric wheels 35 decreases, and the extrusion force on the test block increases. The greater the pulling force on the test block, the greater the rotation angle of the eccentric wheel 35, and the greater the extrusion force of the eccentric wheel 35 on the test block, which can prevent the test block from detaching from the eccentric wheel 35 after the radius of the test block is reduced by the pulling force.

[0060] After the experiment is completed, the adjusting motor 26 is started to drive the adjusting screw 25 to rotate, thereby driving the guide slider 23 to move away from the center of the force-bearing platform 21, and then driving the chuck 3 to release the clamping of the test block.

[0061] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A rubber part quality inspection device, characterized in that: include: A detection device (1), the detection device (1) comprising a workbench (11), a top frame (13) being provided on the top of the workbench (11) via a column (12), a hydraulic cylinder (14) being provided above the top frame (13), a clamping device (2) being provided at the top end of a piston rod of the hydraulic cylinder (14) and the top surface of the workbench (11), the clamping device (2) being connected to a chuck (3); The clamping device (2) comprises a force-bearing platform (21), a plurality of clamping drive devices are arranged above the force-bearing platform (21), each of the clamping drive devices is connected to a clamp (3), and the clamping drive device is used to drive the clamp (3) to approach or move away from the center of the force-bearing platform (21); The chuck (3) comprises a mounting box, the mounting box is connected to the clamping drive device, an eccentric wheel (35) is rotatably mounted inside the mounting box, the head of the eccentric wheel (35) is connected to a return spring (37) via a spring mounting frame (38), and the return spring (37) is used to apply an elastic force to the head of the eccentric wheel (35) in the direction of the center of the force-bearing platform (21).

2. A rubber component quality inspection device as claimed in claim 1, characterized in that: A plurality of guide grooves (22) are evenly arranged on the force-bearing platform (21), and the clamping drive device is slidably installed in the guide grooves (22).

3. A rubber component quality detection device as claimed in claim 2, characterized in that: The clamping drive device comprises a guide slider (23), and the mounting box is fixedly mounted on the top surface of the guide slider (23).

4. A rubber component quality inspection device as claimed in claim 3, characterized in that: An adjusting screw (25) is provided in the middle of the guide slide block (23). The adjusting screw (25) is rotatably mounted in the center of the guide groove (22) through a fixing block (24). An adjusting motor (26) is provided at the head of the adjusting screw (25) passing through the fixing block (24).

5. A rubber component quality inspection device as claimed in claim 3, characterized in that: The installation box comprises a bottom box (31), the bottom box (31) is fixedly mounted on the top surface of the guide slider (23), and a top cover (32) is fixedly mounted on the front side of the bottom box (31).

6. A rubber component quality inspection device as claimed in claim 5, characterized in that: A rotating groove (33) is provided inside the bottom box (31), a rotating column (34) is provided on one side of the rotating groove (33) close to the center of the force-bearing platform (21), and the eccentric wheel (35) is rotatably mounted on the rotating column (34).

7. A rubber component quality inspection device as claimed in claim 6, characterized in that: A spring mounting column (36) is provided on one side of the rotating groove (33) away from the center of the force-bearing platform (21), and the tail of the return spring (37) is fixedly connected to the spring mounting column (36).

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