Quick change structure of test fixture

Abstract

The utility model belongs to the technical field of mold detection equipment, and discloses a test fixture quick-change structure which comprises a disc, and a sliding groove is transversely formed in the middle of the front side of the disc. A motor is arranged on the right side of the disc, a threaded rod is connected to the transmission end of the left side of the motor, the threaded rod transversely penetrates through and is inserted into an inner cavity of the disc leftwards and is located on the rear side of the sliding groove, outer ring clamps are symmetrically arranged on the two sides of the front side face of the disc, and the two outer ring clamps are semicircular clamps which are in butt joint. Inner cavities of the opposite sides of the outer ring clamp are provided with inner ring grooves capable of going in and out, inner ring clamps are installed in the inner ring grooves, and symmetrical outer ring clamp fixing blocks are fixed to the middle portions of the opposite sides of the outer ring clamp and the side walls of the two sides which do not block an inlet and an outlet of the inner ring grooves. A single clamp is difficult to consider multiple surfaces when coping with various complicated workpieces and accessories, so that the clamp can shake in a small range after being fixed, and the clamp is easy to deviate from a detection position when a detector works.

Description

Technical Field

[0001] This utility model relates to the field of mold testing equipment technology, specifically a quick-change structure for a test fixture. Background Technology

[0002] In the automobile production process, it is necessary to conduct certain inspections and tests on the produced parts to determine whether they meet national and usage standards. This is an indispensable step in the production process.

[0003] During the inspection process, the workpiece to be inspected needs to be temporarily fixed to prevent it from falling to the ground and damaging the workpiece. This would not only affect the inspection efficiency but also cause the inspection personnel to pay for the loss. Therefore, a handy fixture structure is particularly important.

[0004] Meanwhile, during production, we found that a single fixture is insufficient to handle the diverse and complex workpieces and accessories, resulting in slight wobbling even after the fixture is fixed. This wobbling can easily cause the fixture to deviate from the inspection position when the inspector is working. Therefore, we designed a structure in which the mother fixture includes the child fixture. After the outer ring fixture is fixed, the inner ring fixture is not fixed. Moreover, to cope with different types of workpieces to be inspected, the fixture can be flexibly disassembled, making it easy to quickly replace with other fixtures of the same type and size. Based on the above design concept, we proposed a quick-change structure for test fixtures. Utility Model Content

[0005] The purpose of this invention is to provide a quick-change structure for a test fixture to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quick-change structure for a test fixture, comprising a disc, wherein a sliding groove is laterally formed in the middle of the front side of the disc;

[0007] A motor is located on the right side of the disc. A threaded rod is connected to the left drive end of the motor. The threaded rod extends laterally to the left and is inserted into the inner cavity of the disc, located behind the slide groove. Two outer ring clamps are symmetrically arranged on the front side of the disc. These two outer ring clamps are mating semi-circular clamps. The inner cavities on opposite sides of the outer ring clamps have inner ring grooves that allow entry and exit. Inner ring clamps are installed within these inner ring grooves. Symmetrical outer ring clamp fixing blocks are fixed to the two sidewalls on opposite sides of the outer ring clamps, without obstructing the entry and exit of the inner ring grooves. The outer ring clamp has a mounting block in the middle of the opposite side. The rear side of the mounting block is an integrally formed mounting block base, and a screw hole is opened through the mounting block base. The mounting block base is inserted into the slide groove, and a threaded rod is screwed into the screw hole of the mounting block base. The threads on the left and right sides of the threaded rod are opposite. A telescopic motor is fixed in the middle of the opposite side of the mounting block by a support frame. Telescopic rods are provided on the opposite sides of the two telescopic motors, and the telescopic rods are inserted into the mounting block and the outer ring clamp to connect to the outer side wall of the inner ring clamp.

[0008] Preferably, the top and bottom of the motor are welded with fixing brackets, and the fixing brackets are fixed to the left side wall of the disc.

[0009] Preferably, the outer ring clamp and the inner ring clamp have the same circular curvature, except that the diameter of the inner ring clamp is smaller than the diameter of the outer ring clamp.

[0010] Preferably, the opposite edges of the outer ring clamp and the inner ring clamp are both wrapped with a rubber layer.

[0011] Preferably, the front side of the mounting block is a U-shaped opening connector, and the connector corresponds to the outer ring clamp.

[0012] Preferably, the four corners of the U-shaped opening of the mounting block are provided with corresponding through holes for the outer ring clamp and the outer ring clamp fixing block, and the two outer ring clamps are fixed to the opposite sides of the two mounting blocks by long bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The fixture is designed with a mother and child clamp. After the outer ring clamp completes the initial clamping and fixing of the workpiece, the inner ring clamp further presses inward to clamp and fix the workpiece again. The inner ring clamp is stored in the inner cavity of the outer ring clamp. When not needed, the inner ring clamp can be used for fixing.

[0015] 2. The outer ring clamp is an independent unit. It can be quickly assembled and disassembled by connecting the outer ring clamp fixing block and the mounting block and locking it with long bolts. When the size of the workpiece is not suitable for the size of the current outer ring clamp, it can be quickly replaced. The replacement structure is simple and easy to operate. Attached Figure Description

[0016] Figure 1 This is a top view of the present invention;

[0017] Figure 2 This is a cross-sectional view of the right outer ring clamp of this utility model;

[0018] Figure 3 This is a schematic diagram showing the connection between the mounting block and the outer ring clamp of this utility model.

[0019] In the diagram: 1. Disc, 2. Slide groove, 3. Motor, 4. Threaded rod, 5. Outer ring clamp, 6. Outer ring clamp fixing block, 7. Mounting block, 8. Inner ring groove, 9. Inner ring clamp, 10. Telescopic motor, 11. Mounting block base. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0022] Please see Figure 1-3 This utility model provides a quick-change structure for a test fixture, including a disc 1. A sliding groove 2 is laterally opened in the middle of the front side of the disc 1. The sliding groove 2 is a sliding groove that passes through the disc 1, and the size of the sliding groove 2 corresponds to the size of the mounting block base 11.

[0023] A motor 3 is located on the right side of the disc 1. A threaded rod 4 is connected to the left transmission end of the motor 3. The threaded rod 4 is inserted laterally into the inner cavity of the disc 1 and is located behind the slide groove 2. Two outer ring clamps 5 are symmetrically arranged on the front side of the disc 1. The two outer ring clamps 5 are semi-circular clamps that meet to the left and can be spliced ​​into a complete circle. The test workpiece is placed in the middle of the disc 1. The inner cavities on opposite sides of the outer ring clamps 5 are provided with inner ring grooves 8 for entry and exit. Inner ring clamps 9 are installed in the inner ring grooves 8. The inner ring groove 8 is slightly larger than the inner ring clamp 9, providing sufficient space to accommodate the inner ring clamp 9. The inner ring clamp 9 can be completely retracted into the inner ring groove 8. Symmetrical outer ring clamp fixing blocks 6 are fixed on the opposite sides of the outer ring clamp 5, without obstructing the inlet and outlet of the inner ring groove 8. These outer ring clamp fixing blocks 6 are welded or integrally formed fixed installation auxiliary blocks. Mounting blocks 7 are provided on the opposite sides of the two outer ring clamps 5. The rear side of the mounting block 7 is an integrally formed mounting block base 11. 1 is a rectangular sliding block, and its size is smaller than the U-shaped connector of the mounting block 7, so that after the mounting block 7 is inserted into the sliding groove 2, the connector is still locked onto the front side of the disc 1. A threaded hole is opened through the mounting block base 11. The mounting block base 11 is locked into the sliding groove 2, and a threaded rod 4 is threaded into the threaded hole of the mounting block base 11. The push thread on the threaded rod 4 is meshed with the thread of the threaded hole of the mounting block base 11. The threads on the left and right sides of the threaded rod 4 are opposite, so that when the motor 3 rotates, the outer ring clamp 5 can always move to the opposite side or The opposing sides move together. The middle of the opposing side of the mounting block 7 is fixed with a telescopic motor 10 by a support frame. The support frame is fixed to the side wall of the mounting block 7 by a support foot. The two telescopic motors 10 are provided with telescopic rods on opposite sides. The telescopic rods pass through the mounting block 7 and the outer ring clamp 5 and connect to the outer side wall of the inner ring clamp 9. The opposite ends of the telescopic rods are provided with screw joints. The opposing sides of the inner ring clamp 9 are provided with screw caps. Before use, the screw joints are fixed in the screw caps. When the telescopic rods move back and forth, they drive the inner ring clamp 9 to move left and right.

[0024] Furthermore, the top and bottom of the motor 3 are welded with fixing brackets, and the fixing brackets are fixed to the left side wall of the disc 1 to stabilize the motor 3.

[0025] Furthermore, the outer ring clamp 5 and the inner ring clamp 9 have the same circular curvature, except that the diameter of the inner ring clamp 9 is smaller than the diameter of the outer ring clamp 5, and the inner ring clamp 9 can be housed in the inner cavity of the outer ring clamp 5.

[0026] Furthermore, the opposite edges of the outer ring clamp 5 and the inner ring clamp 9 are both wrapped with a rubber layer, that is, the side facing the workpiece to be detected, to prevent scratching the surface of the workpiece to be detected and to play a buffering role.

[0027] Furthermore, the front side of the mounting block 7 is a U-shaped opening connector, and the connector corresponds to the outer ring clamp 5.

[0028] Furthermore, the four corners of the U-shaped opening of the mounting block 7 are provided with corresponding through holes for the outer ring clamp 5 and the outer ring clamp fixing block 6. The two outer ring clamps 5 are fixed to the opposite sides of the two mounting blocks 7 by long bolts. When replacing the outer ring clamps 5, the long bolts can be loosened to release the fixation.

[0029] Working principle: When using this solution, the workpiece to be inspected is placed in the middle of the front side of the disc 1. Then, the motor 3 is turned on to drive the threaded rod 4. The two outer ring clamps 5 are pushed towards the workpiece by the threaded push until they are clamped and fixed. When the diameter of the outer ring clamp 5 is larger than the diameter of the workpiece, that is, when the workpiece is not clamped and fixed after the complete circle is formed, the telescopic motor 10 is used to push the inner ring clamp 9 towards the workpiece until it is clamped and fixed. Note that the telescopic range of the inner ring clamp 9 is not very far. Since the clamping distance of the outer ring clamp 5 is already very close to the edge of the workpiece at this time, the inner ring clamp 9 is used for short-distance further fixation. The telescopic motor 10 adopts an ORIC closed-loop fixed axis linear stepper motor, or a similar type of motor that is easy to install and adaptable to the installation size.

[0030] When the size of the workpiece to be tested is not suitable for fixing with the current outer ring clamp 5, loosen the long bolt between the mounting block 7 and the outer ring clamp 5, remove the outer ring clamp 5 and replace it with a clamp of the same type but of a different size. The installation steps are to align the outer ring clamp fixing block 6 with the screw hole of the mounting block 7, and then use the long bolt to lock it in place. This makes it easy for testers to change the clamp in a timely manner to adapt to workpieces of different sizes.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change structure for a test fixture, comprising a disc (1), wherein a sliding groove (2) is laterally formed in the middle of the front side of the disc (1), characterized in that: A motor (3) is provided on the right side of the disc (1). A threaded rod (4) is connected to the left transmission end of the motor (3). The threaded rod (4) is inserted into the inner cavity of the disc (1) laterally to the left and is located on the rear side of the slide groove (2). Two outer ring clamps (5) are symmetrically arranged on the front side of the disc (1). The two outer ring clamps (5) are semi-circular clamps that are joined together. The inner cavity of the opposite side of the outer ring clamps (5) is provided with an inner ring groove (8) that can be entered and exited. An inner ring clamp (9) is installed in the inner ring groove (8). Symmetrical outer ring clamp fixing blocks (6) are fixed on the two side walls of the opposite middle of the outer ring clamps (5) that do not obstruct the inlet and outlet of the inner ring groove (8). Mounting blocks (7) are provided in the middle of the opposite sides of the ring clamp (5). The rear side of the mounting block (7) is an integrally formed mounting block base (11), and a threaded hole is provided in the mounting block base (11). The mounting block base (11) is inserted into the slide groove (2) and a threaded rod (4) is threaded into the threaded hole of the mounting block base (11). The threads on the left and right sides of the threaded rod (4) are opposite. A telescopic motor (10) is fixed in the middle of the opposite side of the mounting block (7) by a support frame. Telescopic rods are provided on the opposite sides of the two telescopic motors (10), and the telescopic rods are inserted into the mounting block (7) and the outer ring clamp (5) and connected to the outer wall of the inner ring clamp (9).

2. The quick-change structure for a test fixture according to claim 1, characterized in that: The motor (3) has a fixing frame welded to its top and bottom, and the fixing frame is fixed to the side wall of the disc (1) to the left.

3. The quick-change structure for a test fixture according to claim 1, characterized in that: The outer ring clamp (5) and the inner ring clamp (9) have the same circular curvature, except that the diameter of the inner ring clamp (9) is smaller than the diameter of the outer ring clamp (5).

4. The quick-change structure for a test fixture according to claim 1, characterized in that: The opposite edges of the outer ring clamp (5) and the inner ring clamp (9) are both wrapped with a rubber layer.

5. The quick-change structure for a test fixture according to claim 1, characterized in that: The front side of the mounting block (7) is a U-shaped opening connector, and the connector corresponds to the outer ring clamp (5).

6. The quick-change structure for a test fixture according to claim 1, characterized in that: The four corners of the U-shaped opening of the mounting block (7) are provided with corresponding through holes as well as the outer ring clamp (5) and the outer ring clamp fixing block (6), and the two outer ring clamps (5) are fixed to the opposite sides of the two mounting blocks (7) by long bolts.

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