Universal pushing and pressing clamp

Abstract

The utility model discloses a universal pushing and pressing clamp which comprises a working table, a fixing block arranged on the working table, a supporting base installed on the working table in the mode that the relative position can be adjusted, and at least one pushing and pressing mechanism installed in the supporting base and used for being matched with the fixing block to clamp a workpiece. The pushing and pressing mechanism comprises an installation base installed on the supporting base, a push rod arranged in the installation base in a penetrating mode, a power device connected with the rear end of the push rod and used for driving the push rod to slide in the installation base and a pressing block installed at the front end of the push rod through a flexible element, a first inclined face is arranged at the front end of the push rod, and the pressing block is provided with a second inclined face. And the second inclined surface is in butt joint with the first inclined surface. When the pressing block is matched with the fixing block to tightly clamp the workpiece, the pressing block provides downward pressure for the workpiece, it is guaranteed that the force for clamping the workpiece is stable, the workpiece can be effectively prevented from tilting, the clamping effect and the clamping requirement are guaranteed, later machining of the workpiece is facilitated, and using is extremely convenient.

Description

Technical fields:

[0001] This utility model relates to the field of clamping product technology, and specifically refers to a general-purpose push-down clamping fixture. Background technology:

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for machining or inspection. It is also called a clamp. A general-purpose fixture refers to a fixture capable of clamping one or more types of workpieces. Examples include welding fixtures, inspection fixtures, assembly fixtures, and machine tool fixtures, with machine tool fixtures being the most common and often simply referred to as a fixture. When machining workpieces on a machine tool, to ensure that the workpiece surface meets the technical requirements specified in the drawings, such as dimensions, geometry, and positional accuracy relative to other surfaces, the workpiece must be properly mounted (positioned) and clamped (tightened) before machining.

[0003] Chinese utility model patent application number 202220114369.5 discloses a universal clamping fixture applicable to clamping plastic molds on various processing equipment. It includes a fixed platform, a fixed clamping plate installed on the top of the fixed platform, a movable clamping plate installed on the side of the fixed clamping plate, a rotating handle installed on the side of the movable clamping plate, and a fixed base installed at the bottom of the fixed platform. Fixed support rods are set at both ends of the side of the fixed back plate, and the movable support rods are fixedly installed at both ends of the movable back plate. In use, the movable clamping plate is driven to move towards the fixed clamping plate by rotating the handle, thereby cooperating with the fixed clamping plate to clamp the workpiece placed on the fixed platform, so as to realize the clamping function.

[0004] However, when using the aforementioned general-purpose mold to clamp some square-shaped workpieces, it only drives the movable clamping plate to move horizontally, and when it comes into contact with the square-shaped workpiece, there is only horizontal force. At this time, the square-shaped workpiece may not be properly stressed, resulting in the problem of it tilting upwards, which affects the subsequent processing. That is, it is necessary to reoperate to meet the clamping requirements, which is inconvenient to operate and causes great trouble to the user.

[0005] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a universal push-down clamp.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The universal push-press clamp includes a worktable, a fixed block disposed on the worktable, a support seat mounted on the worktable in an adjustable relative position, and at least one push-press mechanism mounted in the support seat and used to cooperate with the fixed block to clamp the workpiece. The push-press mechanism includes a mounting seat mounted on the support seat, a push rod passing through the mounting seat, a power device connected to the rear end of the push rod and used to drive the push rod to slide in the mounting seat, and a pressure block mounted on the front end of the push rod through a flexible element. The front end of the push rod is provided with a first inclined surface, and the pressure block has a second inclined surface and is in contact with the first inclined surface through the second inclined surface.

[0008] Furthermore, in the above technical solution, the second inclined surface is provided with an inclined rail, the first inclined surface is provided with an inclined guide groove, and the inclined rail is installed in the inclined guide groove; or, the first inclined surface is provided with an inclined rail, the second inclined surface is provided with an inclined guide groove, and the inclined rail is installed in the inclined guide groove.

[0009] Furthermore, in the above technical solution, the flexible element includes a soft rubber tube and a connecting part integrally fixed to the rear end of the soft rubber tube. The soft rubber tube is inserted into the movable groove at the front end of the push rod and can move in the movable groove. The connecting part is fixedly connected to the push rod, and the front end of the soft rubber tube is fixedly connected to the pressure block.

[0010] Furthermore, in the above technical solution, the connecting part is a threaded section, which is helically fixed to the first threaded groove provided in the movable groove; the front end of the soft rubber tube is provided with a second threaded groove, and the first screw passes through the countersunk hole of the pressure block and is helically fixed to the second threaded groove.

[0011] Furthermore, in the above technical solution, a metal block is integrally connected to the front end of the soft rubber tube, and the metal block is provided with the second threaded groove.

[0012] Furthermore, in the above technical solution, the front end face of the pressing block is a vertical face, and a plurality of anti-slip ridges are provided on the vertical face at intervals.

[0013] Furthermore, in the above technical solution, the mounting base is provided with a horizontally penetrating sliding hole, the push rod passes through the sliding hole, the push rod is provided with a strip-shaped limiting hole, and a limiting rod passes through the mounting base and the limiting rod passes through the strip-shaped limiting hole.

[0014] Furthermore, in the above technical solution, a protective cover is also provided on the outside of the mounting base, and the front end of the protective cover extends out of the front end of the mounting base and is distributed around the front end of the push rod.

[0015] Furthermore, in the above technical solution, the power device includes a power cylinder and a connecting rod connected to the piston rod of the power cylinder, the front end of which is connected to the rear end of the push rod.

[0016] Furthermore, in the above technical solution, the front end of the connecting rod is provided with a threaded post, the rear end of the push rod is provided with a third threaded groove, and the connecting rod is screwed to the rear end of the push rod by means of the threaded post and the third threaded groove; the rear end of the connecting rod is provided with a convex-shaped positioning groove, and the front end of the piston rod is provided with a convex-shaped positioning part, which is pressed into the positioning groove from top to bottom.

[0017] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: In specific use, the workpiece to be clamped is placed between the fixed block and the support seat, and then the pressing mechanism is pushed to work. The power device drives the mounting seat in the push rod to slide, and then the flexible element drives the pressure block to slide towards the fixed block until the pressure block contacts the outer side of the workpiece. At this time, the power device continues to drive the push rod to slide, so that the pressure block is squeezed against the outer side of the workpiece. During this process, the flexible element will bend, and with the cooperation of the second inclined surface and the first inclined surface, it can drive the pressure block to press down relative to the front end of the push rod, thereby tightly clamping the workpiece with the fixed block. The pressure block provides a downward pressure on the workpiece, ensuring that the clamping force is relatively stable and effectively preventing the workpiece from tilting, ensuring the clamping effect and clamping requirements, facilitating the subsequent processing of the workpiece, and is extremely convenient to use. Attached image description:

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a perspective view of the present invention from another angle;

[0020] Figure 3 This is an exploded view of the present invention;

[0021] Figure 4 This is a cross-sectional view of the pushing and pressing mechanism in this utility model;

[0022] Figure 5 This is a perspective view of the push-down mechanism in this utility model;

[0023] Figure 6 This is a perspective view of the pushing and pressing mechanism in this utility model from another angle;

[0024] Figure 7 This is an exploded perspective view of the pushing and pressing mechanism in this utility model;

[0025] Figure 8 This is a perspective view of the connecting rod in this utility model. Detailed implementation method:

[0026] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0027] See Figure 1-8 As shown, a general-purpose push-down clamp includes a worktable 1, a fixed block 2 disposed on the worktable 1, a support base 3 mounted on the worktable 1 in an adjustable relative position, and at least one push-down mechanism 400 mounted in the support base 3 and used to cooperate with the fixed block 2 to clamp the workpiece.

[0028] In this embodiment, three pushing and pressing mechanisms 400 are used in conjunction with the fixing block 2 to clamp the workpiece.

[0029] The pressing mechanism 400 includes a mounting base 4 mounted on a support base 3, a push rod 5 passing through the mounting base 4, a power device 6 connected to the rear end of the push rod 5 and used to drive the push rod 5 to slide in the mounting base 4, and a pressure block 8 mounted on the front end of the push rod 5 via a flexible element 7. The front end of the push rod 5 is provided with a first inclined surface 51, and the pressure block 8 has a second inclined surface 81, and is connected to the first inclined surface 51 through the second inclined surface 81. In practical use, the workpiece to be clamped is placed between the fixed block 2 and the support base 3. Then, the pressing mechanism 400 is pushed to work, and the power device 6 drives the mounting base 4 in the push rod 5 to slide. Then, the flexible element 7 drives the pressure block 8 to slide towards the fixed block 2 until the pressure block 8 contacts the outer side of the workpiece. At this time, the power device 6 continues to drive the push rod 5 to slide, so that the pressure block 8 is pressed against the outer side of the workpiece. During this process, the flexible element 7 will bend, and with the cooperation of the second inclined surface 81 and the first inclined surface 51, it can drive the pressure block 8 to press down relative to the front end of the push rod 5, thereby working with the fixed block 2 to tightly clamp the workpiece. The pressure block 8 provides a downward pressure on the workpiece, ensuring that the clamping force is relatively stable and effectively preventing the workpiece from tilting up, ensuring the clamping effect and clamping requirements, facilitating the subsequent processing of the workpiece, and making it extremely convenient to use.

[0030] The workbench 1 is provided with a through-hole nut groove 11 in the shape of a convex character, and the nut groove 11 is provided with a first square nut 12 and a second square nut 13.

[0031] The fixing block 2 is provided with a first bolt 20, which passes through the nut groove 11 and is screwed to the first square nut 12 to ensure that the fixing block 2 is stably installed on the worktable 1. When it is necessary to adjust the relative position of the fixing block 2, the first bolt 20 is loosened relative to the first square nut 12. The first square nut 12 acts as a slider and moves relative to the nut groove 11, thereby adjusting the position of the fixing block 2 relative to the worktable 1. After completion, the first bolt 20 is tightened again. It is extremely convenient to operate, and the entire assembly structure is simple and easy to install.

[0032] The support base 3 is provided with a second bolt 30, which passes through the nut groove 11 and is screwed to the second square nut 13 to ensure that the support base 3 is stably installed on the workbench 1. When it is necessary to adjust the relative position of the fixing block 2, the second bolt 30 is loosened relative to the second square nut 13. The second square nut 13 moves relative to the nut groove 11 as a slider, thereby adjusting the position of the support base 3 relative to the workbench 1. After completion, the second bolt 30 is tightened again. It is extremely convenient to operate, and the entire assembly structure is simple and easy to install.

[0033] The second inclined surface 81 is provided with an inclined rail 811, and the first inclined surface 51 is provided with an inclined guide groove 511, into which the inclined rail 811 is inserted; this makes the docking of the first inclined surface 51 and the second inclined surface 81 more stable, and allows for more stable relative movement / sliding in one direction. Alternatively, the first inclined surface is provided with an inclined rail, and the second inclined surface is provided with an inclined guide groove, into which the inclined rail is inserted, achieving the same technical effect.

[0034] The flexible element 7 includes a soft rubber tube 71 and a connecting part 72 integrally fixed to the rear end of the soft rubber tube 71. The soft rubber tube 71 is capable of bending and deformation. The soft rubber tube 71 is inserted into the movable groove 52 at the front end of the push rod 5 and can move in the movable groove 52 (i.e., it has enough space to bend and deform). The connecting part 72 is fixedly connected to the push rod 5, and the front end of the soft rubber tube 71 is fixedly connected to the pressure block 8.

[0035] Specifically, the connecting part 72 is a threaded section, which is screwed to the first threaded groove 521 provided in the movable groove 52; the front end of the soft rubber tube 71 is provided with a second threaded groove 711, and the first screw 73 passes through the countersunk hole 82 of the pressure block 8 and is screwed to the second threaded groove 711. Its assembly structure is extremely simple and stable.

[0036] The front end of the soft rubber tube 71 is also integrally connected to a metal block 74, which is provided with the second threaded groove 711 to ensure a stable connection with the first screw 73.

[0037] The front end face of the pressure block 8 is a vertical surface, and a plurality of anti-slip ridges 83 are provided on the vertical surface, which can make more stable contact with the workpiece and prevent slippage.

[0038] The mounting base 4 is provided with a horizontally penetrating sliding hole 41, and the push rod 5 passes through the sliding hole 41. The push rod 5 is provided with a strip-shaped limiting hole 53, and a limiting rod 42 passes through the mounting base 4. The limiting rod 42 passes through the strip-shaped limiting hole 53, thereby limiting the sliding stroke of the push rod 5 in the mounting base 4 and avoiding excessive movement. At the same time, the cooperation between the limiting rod 42 and the strip-shaped limiting hole 53 also plays a guiding role, making the sliding of the push rod 5 in the mounting base 4 more stable.

[0039] The mounting base 4 is also fitted with a protective cover 9, the front end of which extends out of the front end of the mounting base 4 and is distributed around the front end of the push rod 5.

[0040] The power unit 6 includes a power cylinder 61 and a connecting rod 63 connected to the piston rod 62 of the power cylinder 61. The front end of the connecting rod 63 is connected to the rear end of the push rod 5. Preferably, the power cylinder 61 is a hydraulic cylinder.

[0041] The connecting rod 63 has a threaded post 631 at its front end and a third threaded groove 54 at its rear end. The connecting rod 63 is screwed to the rear end of the push rod 5 by means of the threaded post 631 and the third threaded groove 54. The connecting rod 63 has a convex positioning groove 632 at its rear end and a convex positioning part 621 at its front end. The positioning part 621 is pressed into the positioning groove 632 from top to bottom. The assembly is simple and the installation is convenient.

[0042] In summary, when this utility model is used, the workpiece to be clamped is placed between the fixed block 2 and the support base 3. Then, the pressing mechanism 400 is pushed to work, and the power device 6 drives the mounting base 4 in the push rod 5 to slide. Then, the flexible element 7 drives the pressure block 8 to slide towards the fixed block 2 until the pressure block 8 contacts the outer side of the workpiece. At this time, the power device 6 continues to drive the push rod 5 to slide, so that the pressure block 8 is pressed against the outer side of the workpiece. During this process, the flexible element 7 will bend, and with the cooperation of the second inclined surface 81 and the first inclined surface 51, it can drive the pressure block 8 to press down relative to the front end of the push rod 5, thereby working with the fixed block 2 to tightly clamp the workpiece. The pressure block 8 provides a downward pressure on the workpiece, ensuring that the clamping force is relatively stable and effectively preventing the workpiece from tilting up, ensuring the clamping effect and clamping requirements, facilitating the subsequent processing of the workpiece, and making it extremely convenient to use.

[0043] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A universal push-and-press clamp, characterized in that: It includes a worktable (1), a fixing block (2) disposed on the worktable (1), a support base (3) mounted on the worktable (1) in an adjustable relative position, and at least one push-down mechanism (400) mounted in the support base (3) and used to cooperate with the fixing block (2) to clamp the workpiece. The push-down mechanism (400) includes a mounting base (4) mounted on the support base (3), a push rod (5) passing through the mounting base (4), a power device (6) connected to the rear end of the push rod (5) and used to drive the push rod (5) to slide in the mounting base (4), and a pressure block (8) mounted on the front end of the push rod (5) by a flexible element (7). The front end of the push rod (5) is provided with a first inclined surface (51), and the pressure block (8) has a second inclined surface (81) and is connected to the first inclined surface (51) through the second inclined surface (81).

2. The universal push-down clamp according to claim 1, characterized in that: The second inclined surface (81) is provided with an inclined rail (811), and the first inclined surface (51) is provided with an inclined guide groove (511), and the inclined rail (811) is installed in the inclined guide groove (511); or, the first inclined surface is provided with an inclined rail, the second inclined surface is provided with an inclined guide groove, and the inclined rail is installed in the inclined guide groove.

3. The universal push-and-press clamp according to claim 1, characterized in that: The flexible element (7) includes a soft rubber tube (71) and a connecting part (72) integrally fixed to the rear end of the soft rubber tube (71). The soft rubber tube (71) is inserted into the movable groove (52) at the front end of the push rod (5) and can move in the movable groove (52). The connecting part (72) is fixedly connected to the push rod (5), and the front end of the soft rubber tube (71) is fixedly connected to the pressure block (8).

4. The universal push-down clamping fixture according to claim 3, characterized in that: The connecting part (72) is a threaded section, which is screwed to the first threaded groove (521) provided in the movable groove (52); the front end of the soft rubber tube (71) is provided with a second threaded groove (711), and the first screw (73) passes through the countersunk hole (82) of the pressure block (8) and is screwed to the second threaded groove (711).

5. The universal push-down clamping fixture according to claim 4, characterized in that: The front end of the soft rubber tube (71) is also integrally connected to a metal block (74), which is provided with the second threaded groove (711).

6. The universal push-down clamp according to any one of claims 1-5, characterized in that: The front end face of the pressure block (8) is a vertical face, and a plurality of anti-slip ridges (83) are provided on the vertical face.

7. The universal push-down clamp according to any one of claims 1-5, characterized in that: The mounting base (4) is provided with a horizontally penetrating sliding hole (41), the push rod (5) is inserted into the sliding hole (41), the push rod (5) is provided with a strip-shaped limiting hole (53), and a limiting rod (42) is inserted into the mounting base (4), the limiting rod (42) passes through the strip-shaped limiting hole (53).

8. The universal push-down clamp according to any one of claims 1-5, characterized in that: The mounting base (4) is also fitted with a protective cover (9), the front end of which extends out of the front end of the mounting base (4) and is distributed around the front end of the push rod (5).

9. The universal push-down clamp according to any one of claims 1-5, characterized in that: The power unit (6) includes a power cylinder (61) and a connecting rod (63) connected to the piston rod (62) of the power cylinder (61). The front end of the connecting rod (63) is connected to the rear end of the push rod (5).

10. The universal push-down clamping fixture according to claim 9, characterized in that: The connecting rod (63) has a threaded post (631) at its front end and a third threaded groove (54) at its rear end. The connecting rod (63) is screwed to the third threaded groove (54) via the threaded post (631) and the third threaded groove (54) to connect to the rear end of the push rod (5). The connecting rod (63) has a convex-shaped positioning groove (632) at its rear end and a convex-shaped positioning part (621) at its front end. The positioning part (621) is pressed into the positioning groove (632) from top to bottom.

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