Machining fixing jig for clamping supporting plate

Abstract

The utility model relates to the field of fixing jigs, and discloses a machining fixing jig for clamping a supporting plate, which comprises an electromagnetic valve group, a driving element, a fixing block, a fixing seat and a push-pull rod, the two ends of one side of the fixing base are movably connected with fixing blocks used for fixing a supporting plate to be machined, the two ends of the other side of the fixing base are correspondingly provided with driving elements used for pushing the push-pull rods, and the electromagnetic valve set is connected with the driving elements. One end of the push-pull rod is connected with the fixed block through a first connecting piece, and the other end of the push-pull rod is fixedly connected with the extending end of the driving element. The electromagnetic valve group controls the driving element to push the push-pull rod, so that the fixing block can reliably clamp the supporting plate to be machined, the clamping stability and accuracy are improved, shaking in the machining process is reduced, and the machining quality is improved.

Description

A machining and fixing fixture for clamping trays Technical Field

[0001] This utility model relates to the field of fixing fixtures, and more specifically, to a processing fixing fixture for clamping a tray. Background Technology

[0002] In industrial manufacturing processes such as machining, welding, and assembly, fixtures are crucial auxiliary equipment for ensuring workpiece stability and machining accuracy. The workpiece support plate, as a platform, must remain stable during processing; otherwise, machining errors, reduced product quality, and even disruption of equipment operation may occur. Therefore, effectively fixing the workpiece support plate and improving clamping stability are key issues for enhancing machining accuracy and production efficiency.

[0003] Currently, common pallet fixing methods mainly include manual clamping, bolt fixing, and hydraulic or pneumatic clamping mechanisms. However, these traditional methods have certain limitations in practical applications. For example, manual clamping relies on the operator's experience, the clamping force is uneven, and the adjustment time is long, making it difficult to meet the needs of high-efficiency production. Although bolt fixing provides a certain degree of stability, repeated disassembly and assembly are required when changing pallets, affecting production efficiency. While hydraulic or pneumatic clamping mechanisms can provide greater clamping force, in high-speed or high-vibration processing environments, the clamping structure may loosen due to external impacts, affecting the stability of the pallet.

[0004] The main reasons for pallet wobbling during processing include insufficient rigidity of the clamping mechanism, uneven distribution of clamping force, and unreasonable structural design of the clamping device. For example, traditional clamping devices often use single-point or few-point clamping, resulting in a small force-bearing surface, making them prone to displacement under external forces. In addition, vibrations and impacts generated during processing can also cause the clamping force to weaken, leading to slight wobbling of the pallet during processing and thus affecting the final processing accuracy. Summary of the Invention

[0005] To overcome the defects of poor clamping stability and pallet wobbling during processing described in the prior art, this utility model provides a processing fixture for clamping pallets.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0007] A machining fixture for clamping a pallet includes a solenoid valve assembly and a drive element, as well as a fixing block, a fixing seat, and a push-pull rod. The fixing seat has a fixing block movably connected to both ends on one side for fixing the pallet to be processed, and a drive element for pushing the push-pull rod is correspondingly provided on the other side. The solenoid valve assembly is connected to the drive element. The push-pull rod is movably fitted into the fixing seat, with one end connected to the fixing block via a first connector, and the other end fixedly connected to the telescopic end of the drive element.

[0008] Preferably, the driving element is a piston cylinder or a pneumatic cylinder.

[0009] Preferably, the first connecting member is a bolt, and the push-pull rod has an internal thread in the middle. The push-pull rod is threadedly connected to the fixed seat by the bolt.

[0010] Furthermore, the fixed base is configured with a stepped design on both sides, including a first step and a second step;

[0011] The end face of the first step is used to place the pallet to be processed; the inner side of the vertical surface of the second step is provided with a through hole, and the fixing block is movable in the through hole through a second connecting piece fixedly connected to its lower end.

[0012] Preferably, the second connecting member is a pin, and the fixing block is movably connected to the fixing seat through the pin, so that the lower end face of the fixing block slides relative to the upper end face of the second step during the clamping process.

[0013] Furthermore, a baffle for protecting the connecting pipes of the solenoid valve assembly is fixedly provided at the bottom of the mounting base.

[0014] Furthermore, the baffle is provided with a bent inclined section and a vertical section, and the inner side of the bent inclined section and the vertical section fixed on the fixed base form a pipe placement channel.

[0015] Furthermore, a wedge-shaped block is provided between the fixing blocks at both ends of the fixing base, and the vertical section is provided at the connection between the inclined surface of the wedge-shaped block and the inclined surface of the bending section. The inclined surface of the wedge-shaped block and the inclined surface of the bending section are connected as one unit, which is used for the material to slide down the inclined surface during the processing.

[0016] Furthermore, the angle between the inclined plane of the bent section and the vertical plane of the vertical section is 15°-30°.

[0017] Furthermore, the fixing block is concave, and the corners of the contact surfaces of the fixing block that contact the fixing seat and the pallet to be processed are all provided with chamfers to reduce stress concentration.

[0018] Furthermore, one end of the push-pull rod is provided with a connector, and the connector is provided with an external thread. The protruding end of the drive element is threadedly connected to the push-pull rod through the external thread of the connector.

[0019] Furthermore, the allowable stroke at the extended end of the drive element is greater than the opening distance between the fixed block and the tray to be processed.

[0020] Furthermore, the fixing block has several anti-slip grooves spaced apart on the contact surface of the side of the tray to be processed to strengthen the fixing.

[0021] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0022] 1. High-efficiency clamping and stable fixation. The solenoid valve group controls the drive element to push the push-pull rod, so that the fixing block can reliably clamp the pallet to be processed, improving the stability and accuracy of clamping, reducing shaking during processing, and improving processing quality.

[0023] 2. Optimized structure for enhanced durability and safety. The mounting base features a stepped design and includes a baffle to protect the solenoid valve assembly's connecting pipes, effectively preventing damage to the pipes due to debris accumulation or external impacts. Simultaneously, the cooperation between the wedge-shaped block and the inclined surface of the baffle's bent section ensures smooth debris sliding off, reducing processing interference and improving the equipment's durability and safety.

[0024] 3. Enhanced clamping force and reduced stress concentration. The fixing block features a concave design with chamfered corners at the contact points with the fixing seat and the workpiece, effectively reducing stress concentration and lowering the risk of damage due to excessive local stress during clamping. Furthermore, the anti-slip grooves on the contact surface of the fixing block further enhance clamping force, ensuring the stability of the workpiece during processing, preventing slippage or displacement, and improving processing accuracy and safety. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the machining fixture used to clamp the pallet;

[0026] Figure 2 is a schematic diagram of the loosened state of the machining fixture used to clamp the pallet;

[0027] Figure 3 is a schematic diagram of the clamping state of the machining fixture used to clamp the pallet.

[0028] Figure 4 is a schematic diagram of the push-pull rod and its connector;

[0029] Figure 5 is a front view of the fixed block;

[0030] 1. Fixing block; 101. Second connecting piece; 2. Fixing seat; 201. First step; 202. Second step; 203. Wedge block; 204. First connecting piece; 3. Push-pull rod; 301. Connector; 4. Solenoid valve assembly; 5. Driving element; 6. Baffle; 601. Inclined surface of the bending section; 602. Vertical section. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this application. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the described embodiments without creative effort are within the scope of protection of this application.

[0032] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Example 1

[0034] As shown in Figure 1, this embodiment discloses a processing and fixing fixture for clamping a pallet, including a solenoid valve assembly 4 and a driving element 5, as well as a fixing block 2, a fixing seat 2 and a push-pull rod 3; the fixing seat 2 has a fixing block 2 for fixing the pallet to be processed connected to both ends on one side, and a driving element 5 for pushing the push-pull rod 3 is correspondingly provided on the other side, and the solenoid valve assembly 4 is connected to the driving element 5; the push-pull rod 3 is fitted into the fixing seat 2, one end is connected to the fixing block 2 through a first connector 204, and the other end is fixedly connected to the telescopic end of the driving element 5.

[0035] The fixed base 2 is set in a stepped manner on both sides, including a first step 201 and a second step 202; the end face of the first step 201 is used to place the pallet to be processed; a through hole is opened on the inner side of the vertical surface of the second step 202, and the fixed block 2 is movable in the through hole through the second connector 101 fixedly connected at the lower end.

[0036] The driving element 5 is a hydraulic cylinder. High-pressure oil is transported through a high-pressure oil pipe, and then transmitted to the driving element 5, i.e., the hydraulic cylinder, via the solenoid valve assembly 4. Driven by the solenoid valve assembly 4 and the driving cylinder, the extension and retraction end of the hydraulic cylinder pushes the push-pull rod 3 to extend and retract, thereby changing the relative distance between the fixed block 2 and the fixed seat 2. Using a hydraulic cylinder as the driving element, and utilizing high-pressure oil to drive the push-pull rod 3, allows the fixed block 2 to stably clamp the pallet. Because the driving force of the hydraulic cylinder is large and controllable, the clamping force can be evenly distributed on the surface of the pallet, reducing uneven local stress and effectively preventing the pallet from shaking during processing, thus improving processing accuracy.

[0037] By controlling the flow of high-pressure oil through the solenoid valve assembly 4, the clamping and loosening operations of the fixing block 2 can be quickly realized. Compared with the traditional manual or bolt fixing method, this design can significantly reduce the time required to change the pallet, improve production efficiency, and is particularly suitable for batch processing scenarios. The stepped fixing base 2 design allows the pallet to better fit the end face of the first step 201 of the fixing base 2, improving positioning accuracy. At the same time, a through hole is provided on the inner side of the vertical surface of the second step 202. The fixing block moves within the through hole through the second connector, so that the fixing block 2 can maintain a certain degree of guidance during the clamping process, avoid deviation during the clamping process, and improve clamping reliability.

[0038] A baffle 6 is fixedly installed at the bottom of the mounting base 2 to protect the connecting pipes of the solenoid valve assembly 4. The baffle 6 has a bent inclined section 601 and a vertical section 602. The inner side of the bent inclined section 601 and the vertical plane of the vertical section 602 fixed on the mounting base 2 form a pipe placement channel. The angle between the bent inclined section and the vertical plane of the vertical section is 15°. The baffle 6 at the bottom of the mounting base 2 effectively protects the connecting pipes of the solenoid valve assembly 4, preventing damage to the oil pipes from external impacts, debris accumulation, or other external factors, reducing equipment failure rate, and improving the stability and durability of the overall system. The bent inclined section 601 and the vertical section 602 of the baffle form a pipe placement channel, and the reasonable 15° angle allows debris to slide smoothly down the inclined section, preventing debris from accumulating inside the fixing fixture, thereby reducing maintenance frequency and maintaining the stable operation of the clamping system.

[0039] Example 2

[0040] As shown in Figures 1-5, this embodiment discloses another processing and fixing fixture for clamping a pallet, including a solenoid valve assembly 4 and a driving element 5, as well as a fixing block 2, a fixing seat 2 and a push-pull rod 3; the fixing seat 2 has a fixing block 2 for fixing the pallet to be processed connected to both ends on one side, and a driving element 5 for pushing the push-pull rod 3 is correspondingly provided on the other side, and the solenoid valve assembly 4 is connected to the driving element 5; the push-pull rod 3 is fitted into the fixing seat 2, one end is connected to the fixing block 2 through the first connector 204, and the other end is fixedly connected to the telescopic end of the driving element 5.

[0041] A baffle 6 is fixedly installed at the bottom of the fixed base 2 to protect the connecting pipe of the solenoid valve assembly 4. The baffle 6 has a bent inclined section 601 and a vertical section 602. The inner side of the bent inclined section 601 and the vertical plane of the vertical section 602 fixed on the fixed base 2 form a pipe placement channel. The angle between the bent inclined section and the vertical plane of the vertical section is 30°. The 30° angle between the bent inclined section 601 and the vertical section 602 of the baffle 6 allows the debris generated during processing to slide smoothly down the inclined section, reducing the accumulation of debris on the fixed base 2, preventing debris from affecting the normal operation of the clamping mechanism, thereby reducing the frequency of equipment maintenance and improving work efficiency.

[0042] A wedge-shaped block 203 is provided between the fixing blocks 2 at both ends of the fixing base 2. A vertical section 602 is provided at the connection between the inclined surface of the wedge-shaped block 203 and the inclined surface 601 of the bending section. The inclined surface of the wedge-shaped block 203 and the inclined surface 601 of the bending section are connected as one unit, which is used for the material to slide down the inclined surface during processing. By setting the wedge-shaped block 203 between the fixing blocks 2 and connecting its inclined surface with the inclined surface 601 of the bending section of the baffle 6 to form a continuous inclined surface, the debris can slide down along this structure more quickly, preventing the debris from accumulating inside the fixing base.

[0043] In addition, the design of the wedge block 203 enhances the rigidity and stability of the overall structure of the fixing fixture. Because the wedge block 203 forms a tight structural connection with the fixing block 2, the fixing block 2 can distribute the force more evenly when clamping the pallet, reducing loosening or deformation caused by external impacts or uneven clamping force, thereby further improving the reliability of the clamping fixture. With the improved stability of the fixing block 2, the clamping accuracy of the pallet during processing also improves, ensuring that the pallet will not shift or loosen due to vibration or stress changes during processing, ultimately improving processing accuracy and product quality.

[0044] Example 3

[0045] As shown in Figures 1-5, this embodiment discloses another processing and fixing fixture for clamping a pallet, including a solenoid valve assembly 4 and a driving element 5, as well as a fixing block 2, a fixing seat 2 and a push-pull rod 3; the fixing seat 2 has a fixing block 2 for fixing the pallet to be processed connected to both ends on one side, and a driving element 5 for pushing the push-pull rod 3 is correspondingly provided on the other side, and the solenoid valve assembly 4 is connected to the driving element 5; the push-pull rod 3 is fitted into the fixing seat 2, one end is connected to the fixing block 2 through the first connector 204, and the other end is fixedly connected to the telescopic end of the driving element 5.

[0046] The fixing block 2 is concave, and the corners of the contact surfaces of the fixing block 2 with the fixing seat 2 and the pallet to be processed are provided with chamfers to reduce stress concentration. The concave structure of the fixing block 2 and the chamfers at the corners of the contact surfaces with the fixing seat 2 and the pallet to be processed effectively disperse the clamping force, reduce stress concentration, and prevent deformation or damage to the fixing block or pallet due to excessive local stress, thereby improving the service life and clamping stability of the clamping device.

[0047] One end of the push-pull rod 3 is provided with a connector 301, and the connector 301 is provided with an external thread. The protruding end of the drive element 5 is threadedly connected to the push-pull rod 3 through the external thread of the connector 301. The threaded connection method not only provides a reliable fixing effect and prevents loosening, but also facilitates disassembly and maintenance, thereby improving the maintainability and service life of the equipment.

[0048] The allowable stroke at the extended end of the drive element 5 is greater than the opening distance between the fixed block 2 and the pallet to be processed. By setting a allowable stroke at the telescopic end of the drive element 5, making its stroke greater than the opening distance between the fixed block 2 and the pallet to be processed, it is possible to ensure that the fixed block 2 is fully fitted to the pallet during the clamping process. Even if there is a certain tolerance in the thickness of the pallet, it can ensure sufficient clamping force, avoid the problem of insufficient or excessive clamping, and improve applicability.

[0049] The fixing block 2 has several anti-slip grooves spaced apart on the contact surface of the side where the pallet to be processed is fixed, which can increase the friction between the fixing block and the pallet, effectively preventing the pallet from sliding due to vibration or external force during processing, improving clamping reliability, and thus ensuring processing accuracy.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A machining fixture for clamping a pallet, comprising a solenoid valve assembly (4) and a drive element (5), characterized in that, It also includes a fixing block (2), a fixing seat (2), and a push-pull rod (3); the fixing seat (2) has a fixing block (2) for fixing the pallet to be processed connected to both ends on one side, and a driving element (5) for pushing the push-pull rod (3) is provided on the other side. The solenoid valve group (4) is connected to the driving element (5); the push-pull rod (3) is movably fitted into the fixing seat (2), one end is connected to the fixing block (2) through the first connector (204), and the other end is fixedly connected to the telescopic end of the driving element (5).

2. The machining and fixing fixture for clamping the pallet according to claim 1, characterized in that, The fixed base (2) is set in a stepped manner on both sides, including a first step (201) and a second step (202); the end face of the first step (201) is used to place the pallet to be processed; a through hole is opened on the inner side of the vertical surface of the second step (202), and a second connector (101) is movably connected in the through hole corresponding to the lower end of the fixed block (2), and the second connector (101) moves up and down in the through hole during the movement of the fixed block (2).

3. The machining and fixing fixture for clamping the pallet according to claim 1, characterized in that, The bottom of the fixed base (2) is fixedly provided with a baffle (6) for protecting the connecting pipe of the solenoid valve assembly (4).

4. The machining and fixing fixture for clamping the pallet according to claim 3, characterized in that, The baffle (6) is provided with a bend section slope (601) and a vertical section (602). The inner side of the bend section slope (601) and the vertical section (602) fixed on the fixed seat (2) together form a pipe placement channel.

5. The machining and fixing fixture for clamping the pallet according to claim 4, characterized in that, A wedge block (203) is provided between the fixing blocks (2) at both ends of the fixing base (2). The vertical section (602) is located at the connection between the inclined surface of the wedge block (203) and the inclined surface of the bending section (601). The inclined surface of the wedge block (203) and the inclined surface of the bending section (601) are connected as one unit, which is used for the material to slide down the inclined surface during the processing.

6. The machining and fixing fixture for clamping the pallet according to claim 4, characterized in that, The angle between the inclined plane (601) of the bending section and the vertical plane of the vertical section (602) is 15°-30°.

7. The machining and fixing fixture for clamping a pallet according to claim 1, characterized in that, The fixing block (2) is concave, and the corners of the contact surfaces of the fixing block (2) that contact the fixing seat (2) and the pallet to be processed are provided with chamfers to reduce stress concentration.

8. The machining and fixing fixture for clamping a pallet according to claim 1, characterized in that, One end of the push-pull rod (3) is provided with a connector (301), and the connector (301) is provided with an external thread. The protruding end of the drive element (5) is threadedly connected to the push-pull rod (3) through the external thread of the connector (301).

9. The machining and fixing fixture for clamping a pallet according to claim 1, characterized in that, The reserved stroke at the extended end of the drive element (5) is greater than the opening distance between the fixed block (2) and the pallet to be processed.

10. The machining and fixing fixture for clamping a pallet according to claim 1, characterized in that, The fixing block (2) has several anti-slip grooves spaced apart on the contact surface of the side of the tray to be processed to strengthen the fixing.

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