Automatic pressure regulating clamp detection device

Abstract

The utility model relates to the technical field of detection devices, in particular to an automatic pressure regulating clamp detection device, each of two groups of clamping assemblies comprises a movable clamp and a fixed clamp which are oppositely arranged, a hydraulic control mechanism is arranged between the movable clamp and the fixed clamp, the hydraulic control mechanism is used for controlling the movable clamp to be close to or far away from the fixed clamp, and the hydraulic control mechanism is used for controlling the movable clamp to be close to or far away from the fixed clamp. The hydraulic control mechanism comprises an oil tank, a motor, a conveying pump, a three-position four-way reversing valve and an oil cylinder, the output end of the motor is in transmission connection with the power input end of the conveying pump, the input end of the conveying pump is arranged in the oil tank, and the output end of the conveying pump is communicated with an oil port P of the three-position four-way reversing valve. The pressure of the whole hydraulic system is controlled through the proportioning valve, the clamping force of the clamping assembly on the product can be accurately controlled, the requirement for the clamping force of a special product is met, the applicability of the detection device is improved, and the proportioning valve also provides an overload protection effect on the whole hydraulic system.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to an automatic pressure regulating clamp detection device. Background Technology

[0002] After the production of wire harness products is completed, the products need to be tested. Existing testing equipment mainly includes jaws for clamping the products. The jaws are mainly controlled manually to clamp or release. For special products, testing is required under a certain clamping force. Existing testing equipment cannot meet the testing requirements for such products, which reduces the applicability of the equipment. Therefore, new equipment is needed for testing, which increases the testing time and cost. Utility Model Content

[0003] The technical problem to be solved by this utility model is that, in order to solve the problem that the existing testing equipment cannot meet the testing requirements for products with special clamping forces due to manual control of the clamping jaws to tighten or loosen the products, thus reducing the applicability of the equipment, new equipment is needed for testing, which increases the testing cost. Here, an automatic pressure regulating clamp testing device is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an automatic pressure regulating clamp detection device, including a base, on which two sets of clamping components are arranged in parallel, each set of clamping components including a moving clamp and a fixed clamp arranged opposite to each other, and a hydraulic control mechanism is provided between the moving clamp and the fixed clamp, the hydraulic control mechanism being used to control the moving clamp to move closer to or away from the fixed clamp.

[0005] The hydraulic control mechanism includes an oil tank, a motor, a delivery pump, a three-position four-way directional valve, and a hydraulic cylinder. The output end of the motor is connected to the power input end of the delivery pump, the input end of the delivery pump is located in the oil tank, the output end of the delivery pump is connected to the P port of the three-position four-way directional valve, the A port of the three-position four-way directional valve is connected to the rodless chamber of the hydraulic cylinder, the rod chamber of the hydraulic cylinder is connected to the B port of the three-position four-way directional valve, the T port of the three-position four-way directional valve is connected to the oil tank, the hydraulic cylinder is mounted on a base, the movable clamp is mounted on the output end of the hydraulic cylinder, and a proportional regulating valve for controlling system pressure is connected between the output end of the delivery pump and the P port of the three-position four-way directional valve. Compared with the prior art, this solution controls the displacement of the movable clamp through the hydraulic system and controls the pressure of the entire hydraulic system through the proportional regulating valve, achieving precise control of the clamping force of the clamping components on the product, meeting the clamping force requirements of special products, improving the applicability of the detection device, and at the same time, the proportional regulating valve also provides overload protection for the entire hydraulic system.

[0006] During testing, the clamping assembly needs to maintain clamping force at all times. To prevent pressure leakage, in some preferred embodiments, the hydraulic control mechanism further includes a two-position two-way directional valve disposed between the cylinder and the three-position four-way directional valve. The P2 port of the two-position two-way directional valve is connected to the B port of the three-position four-way directional valve, and the A2 port of the two-position two-way directional valve is connected to the rod chamber of the cylinder. By connecting the two-position two-way directional valve between the cylinder and the three-position four-way directional valve, during pressure holding, the two-position two-way directional valve is simultaneously switched to the left position, and the three-position four-way directional valve is switched to the center position, thereby cutting off the hydraulic oil in the rod chamber and rodless chamber of the cylinder. The two-position two-way directional valve and the three-position four-way directional valve are interlocked, further reducing system leakage and achieving pressure holding in the cylinder, thus keeping the clamping assembly in a clamped state.

[0007] In some preferred embodiments, the two-position two-way directional valve is a direct-acting two-position two-way directional valve.

[0008] Due to the different product lengths, in order to meet the testing requirements of products of different lengths, in some preferred embodiments, one of the two sets of clamping components is fixed on the base, and the other set of clamping components is movably disposed on the base. The base is provided with a drive mechanism for controlling the other set of clamping components to move closer to or further away from the first set of clamping components.

[0009] In some preferred embodiments, the movable clamp in one set of clamping assemblies and the fixed clamp in another set of clamping assemblies are disposed on the same side, and the fixed clamp in one set of clamping assemblies and the movable clamp in another set of clamping assemblies are disposed on the same side.

[0010] In some preferred embodiments, the three-position four-way directional valve is a three-position four-way solenoid directional valve.

[0011] In some preferred embodiments, the proportional control valve is an electro-proportional valve.

[0012] The beneficial effects of this utility model are as follows: When in use, the automatic pressure-adjusting clamp testing device of this utility model controls the displacement of the moving clamp through a hydraulic system and controls the pressure of the entire hydraulic system through a proportional regulating valve. This allows for precise control of the clamping force of the clamping components on the product, meeting the clamping force requirements of special products and improving the applicability of the testing device. Simultaneously, the proportional regulating valve also provides overload protection for the entire hydraulic system. This avoids the problem that existing testing equipment mainly consists of jaws for clamping products, where clamping or loosening is primarily controlled manually. For special products requiring testing under a certain clamping force, existing testing equipment cannot meet the requirements, reducing the applicability of the equipment and necessitating new equipment for testing, thus increasing testing costs. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure between the hydraulic control mechanism and the moving clamp 3 in this utility model.

[0016] In the diagram: 1. Base, 2. Clamping assembly, 3. Moving clamp, 4. Fixed clamp, 5. Oil tank, 6. Motor, 7. Conveyor pump, 8. Three-position four-way directional valve, 9. Oil cylinder, 10. Proportional regulating valve, 11. Two-position two-way directional valve. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the embodiments:

[0018] This utility model is not limited to the following specific embodiments. Those skilled in the art can implement this utility model using various other specific embodiments based on the disclosed content. Any modifications or alterations to the design structure and concept of this utility model fall within its protection scope. It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined with each other.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1-2 As shown, an automatic pressure regulating clamp detection device includes a base 1, on which two sets of clamping components 2 are arranged in parallel. Each set of clamping components 2 includes a movable clamp 3 and a fixed clamp 4 arranged opposite to each other. A hydraulic control mechanism is provided between the movable clamp 3 and the fixed clamp 4. The hydraulic control mechanism is used to control the movable clamp 3 to move closer to or away from the fixed clamp 4.

[0022] The hydraulic control mechanism includes an oil tank 5, a motor 6, a delivery pump 7, a three-position four-way directional valve 8, and a cylinder 9. The output end of the motor 6 is connected to the power input end of the delivery pump 7. The input end of the delivery pump 7 is located in the oil tank 5. The output end of the delivery pump 7 is connected to the P port of the three-position four-way directional valve 8. The A port of the three-position four-way directional valve 8 is connected to the rodless chamber of the cylinder 9. The rod chamber of the cylinder 9 is connected to the B port of the three-position four-way directional valve 8. The T port of the three-position four-way directional valve 8 is connected to the oil tank 5. The cylinder 9 is mounted on the base 1. The moving clamp 3 is mounted on the output end of the cylinder 9. A proportional regulating valve 10 for controlling the system pressure is connected between the output end of the delivery pump 7 and the P port of the three-position four-way directional valve 8.

[0023] The hydraulic control mechanism also includes a two-position two-way directional valve 11 disposed between the cylinder 9 and the three-position four-way directional valve 8. The P2 port of the two-position two-way directional valve 11 is connected to the B port of the three-position four-way directional valve 8, and the A2 port of the two-position two-way directional valve 11 is connected to the rod chamber of the cylinder 9.

[0024] One of the two sets of clamping components 2 is fixed on the base 1, and the other set of clamping components 2 is movably disposed on the base 1. The base 1 is provided with a drive mechanism for controlling the other set of clamping components 2 to move closer to or away from the first set of clamping components 2. In this embodiment, the drive mechanism includes a servo motor 6 mounted on the base 1. A lead screw and nut mechanism is provided between the base 1 and the other set of clamping components 2, and the servo motor 6 is connected to the lead screw and nut mechanism for transmission.

[0025] The movable clamp 3 in one set of clamping components 2 is located on the same side as the fixed clamp in another set of clamping components 2, and the fixed clamp 4 in one set of clamping components 2 is located on the same side as the movable clamp in another set of clamping components 2.

[0026] In this embodiment, the two-position two-way directional valve 11 is a direct-acting two-position two-way directional valve 11, the three-position four-way directional valve 8 is a three-position four-way solenoid directional valve, and the proportional control valve 10 is an electro-proportional valve.

[0027] Before testing, the above-mentioned automatic pressure regulating clamp testing device clamps wire harnesses of the same model with a fixed pressure according to the actual production process. The proportional regulating valve 10 is adjusted online according to the pressure feedback from the hydraulic cylinder 9, which means the clamping force of the wire harness is adjusted in real time.

[0028] In the initial state, the three-position four-way directional valve 8 is in the middle position. The motor 6 drives the delivery pump 7 to rotate and supply pressure oil into the three-position four-way directional valve 8. The clamping assembly 2 is in an unclamped state. The pressure oil is unloaded through the P port and T port of the three-position four-way directional valve 8. When the clamping assembly 2 needs to clamp the product, the three-position four-way directional valve 8 is in the right position. The hydraulic oil enters the rodless chamber of the cylinder 9 from the P port to the A port. The extended end of the cylinder 9 drives the moving clamp 3 to approach the fixed clamp 4 until the clamping action is completed. At the same time, the two-position two-way directional valve 11 is in the right position. The oil in the rod chamber of the cylinder 9 returns to the oil tank 5 through the two-position two-way directional valve 11 and the three-position four-way directional valve 8.

[0029] When clamping cylinder 9 needs to be held under pressure, and when clamping exceeds the rated time, the system needs to hold pressure. At this time, the speed of motor 6 is reduced, and the three-position four-way directional valve 8 is constantly switching between the middle and right positions to fill cylinder 9 with fluid and complete the pressure holding. A two-position two-way directional valve 11 is added to the hydraulic system. When pressure holding is required, the two-position two-way directional valve 11 is in the left position, cutting off the return oil from the rod chamber of cylinder 9. Together with the three-position four-way directional valve 8 in the middle position, a circuit is formed, and two-stage pressure holding is completed to complete the system pressure holding.

[0030] After the test is completed, the three-position four-way directional valve 8 switches to the left position. The pressure oil delivered by the delivery pump 7 passes through the P port of the three-position four-way directional valve 8 to the B port and enters the rod chamber of the cylinder 9 through the two-position two-way directional valve 11. At this time, the hydraulic oil in the rodless chamber of the cylinder 9 is unloaded through the A port of the three-position four-way directional valve 8 to the T port and returns to the oil tank 5, completing the test of the wiring harness. The moving clamp 3 moves back and is released.

[0031] The operating speed of the hydraulic cylinder 9 can be adjusted by increasing or decreasing the speed of motor 6, thereby improving detection efficiency.

[0032] The above description, based on the preferred embodiments of this utility model, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. An automatic pressure regulating clamp detection device, comprising a base, two sets of clamp assemblies are arranged side by side on the base, characterized in that: The clamping assemblies are provided with a movable clamp and a fixed clamp arranged oppositely, and a hydraulic control mechanism is arranged between the movable clamp and the fixed clamp, and the hydraulic control mechanism is used for controlling the movable clamp to approach or move away from the fixed clamp. The hydraulic control mechanism comprises an oil tank, a motor, a delivery pump, a three-position four-way reversing valve and an oil cylinder, the output end of the motor is in transmission connection with the power input end of the delivery pump, the input end of the delivery pump is arranged in the oil tank, the output end of the delivery pump is in communication with the P oil port of the three-position four-way reversing valve, the A oil port of the three-position four-way reversing valve is in communication with the rodless cavity of the oil cylinder, the rod cavity of the oil cylinder is in communication with the B oil port of the three-position four-way reversing valve, the T oil port of the three-position four-way reversing valve is in communication with the oil tank, the oil cylinder is arranged on the base, the movable clamp is arranged on the output end of the oil cylinder, and the output end of the delivery pump and the P oil port of the three-position four-way reversing valve are in communication with a proportional regulating valve used for controlling the system pressure.

2. The automatic pressure regulating clamp detection device of claim 1, wherein: The hydraulic control mechanism further comprises a two-position two-way reversing valve arranged between the oil cylinder and the three-position four-way reversing valve, the P2 oil port of the two-position two-way reversing valve is in communication with the B oil port of the three-position four-way reversing valve, and the A2 oil port of the two-position two-way reversing valve is in communication with the rod cavity of the oil cylinder.

3. The automatic pressure regulating clamp detection device of claim 2, wherein: The two-position two-way reversing valve is a direct-acting two-position two-way reversing valve.

4. The automatic pressure regulating clamp detection device according to claim 1 or 2 or 3, characterized in that: One of the clamping assemblies is fixed on the base, and the other clamping assembly is movably arranged on the base, and the base is provided with a driving mechanism used for controlling the other clamping assembly to approach or move away from one of the clamping assemblies.

5. The automatic pressure regulating clamp detection device of claim 3, wherein: The movable clamp of one of the clamping assemblies is arranged on the same side as the fixed clamp of the other clamping assembly, and the fixed clamp of one of the clamping assemblies is arranged on the same side as the movable clamp of the other clamping assembly.

6. The automatic pressure regulating clamp detection device of claim 1, wherein: The three-position four-way reversing valve is a three-position four-way electromagnetic reversing valve.

7. The automatic pressure regulating clamp detection device of claim 1, wherein: The proportional regulating valve is an electrical proportional valve.

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