Fixing jig

Abstract

The fixing jig comprises a bottom plate, a fixing mechanism and a telescopic mechanism, the bottom plate is provided with a first surface and a second surface which are opposite, the bottom plate is provided with a first groove penetrating through the first surface and an air suction hole penetrating through the first surface and the second surface, and the air suction hole communicates with the first groove; the fixing mechanism is fixed to the bottom plate and covers the first groove, the fixing mechanism is provided with a third surface and a fourth surface which are opposite, the fixing mechanism is provided with a through hole, the through hole penetrates through the third surface and the fourth surface, and the through hole is communicated with the first groove and the air suction hole; the telescopic mechanism comprises a blocking piece, an elastic piece and a fixing piece, the fixing piece and the elastic piece are located in the first groove, the fixing piece is fixed to the bottom of the first groove, the elastic piece is connected between the fixing piece and the blocking piece, and the blocking piece protrudes out of the third surface and blocks the through hole. The fixing jig is high in universality, easy to operate and suitable for fixing workpieces of various models and sizes.

Description

Technical Field

[0001] This application relates to the field of fixture equipment technology, and in particular to a fixing fixture. Background Technology

[0002] During the machining process, jigs are often used to fix the workpiece in place to ensure machining accuracy and stability. Currently, jigs for fixing workpieces fall into two main categories: dedicated jigs and universal jigs. Dedicated jigs are designed according to the workpiece's structure and machining requirements, but their versatility is limited. Universal jigs, as the name suggests, can be used to fix workpieces of various sizes. However, traditional universal jigs rely on clamping blocks to hold the workpiece in place, which requires repeated clamping when changing workpieces, and the clamping process is time-consuming. Summary of the Invention

[0003] In view of this, this application provides a fixation fixture that is versatile and easy to operate.

[0004] A fixing fixture includes a base plate, a fixing mechanism, and a telescopic mechanism. The base plate has opposing first and second surfaces. The base plate has a first groove penetrating the first surface and an air intake hole penetrating both the first and second surfaces, with the air intake hole communicating with the first groove. The fixing mechanism is fixed to the base plate and covers the first groove. The fixing mechanism has opposing third and fourth surfaces and a through hole penetrating both the third and fourth surfaces, communicating with the first groove and the air intake hole. The telescopic mechanism includes a sealing member, an elastic member, and a fixing member. The fixing member and the elastic member are located within the first groove. The fixing member is fixed to the bottom of the first groove, and the elastic member connects the fixing member and the sealing member. The sealing member protrudes from the third surface and blocks the through hole.

[0005] In some embodiments, the fastener includes a base and a guide rod, the base being fixed to the bottom surface of the first groove, and the guide rod being located within the first groove and connected to the surface of the base opposite to the base plate.

[0006] In some embodiments, the elastic element is a spring, which is sleeved on the outer periphery of the guide rod.

[0007] In some embodiments, the sealing element includes a first body and a second body, the first body passing through the through hole and protruding from the third surface, the second body being located within the first groove, the maximum diameter of the first body being equal to the diameter of the through hole, and the diameter of the first body gradually decreasing along the direction from the second body toward the first body.

[0008] In some embodiments, the side of the second body opposite to the first body is fixedly connected to the elastic element.

[0009] In some embodiments, the second body has opposing top and bottom surfaces, the first body is connected to the top surface, the second body is provided with a second groove that penetrates the bottom surface, and the elastic element is partially accommodated in the second groove.

[0010] In some embodiments, the fixing mechanism includes a plurality of through holes, which are spaced apart along a first direction and a second direction, the first direction intersecting the second direction. The fixing mechanism also includes a plurality of telescopic mechanisms, each corresponding to one of the through holes.

[0011] In some embodiments, the fixing mechanism has at least two first slots and at least two second slots extending through the third surface. The at least two first slots are spaced apart along a first direction, and the at least two second slots are spaced apart along a second direction, the first direction intersecting the second direction. Each through hole is located between each pair of adjacent first slots and between each pair of adjacent second slots. The fixing fixture further includes a seal located within the first and second slots. The seal has opposing fifth and sixth surfaces, the fifth surface being close to the bottom of the first or second slot, and the sixth surface protruding from the third surface. The seal is elastic.

[0012] In some embodiments, the fixing fixture further includes a negative pressure device connected to and communicating with the air intake.

[0013] In some embodiments, the base plate is provided with a first fixing hole that penetrates the first surface and the second surface, and the fixing mechanism is provided with a second fixing hole that penetrates the fourth surface. The first fixing hole and the second fixing hole are used to fix the base plate and the fixing mechanism.

[0014] The fixing fixture provided in this application is highly versatile and can be used to fix workpieces of various models and sizes. It is also easy to operate; simply place the workpiece on the surface of the fixing mechanism and press it down to fix the workpiece. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a fixing fixture provided in one embodiment of this application.

[0016] Figure 2 This is an exploded view of the structure of the fixing fixture provided in one embodiment of this application.

[0017] Figure 3 This is a schematic diagram of the base plate and negative pressure device provided in one embodiment of this application.

[0018] Figure 4 This is an exploded view of the telescopic mechanism provided in one embodiment of this application.

[0019] Figure 5 This is a partial cross-sectional schematic diagram of a fixing mechanism with a seal provided in one embodiment of this application.

[0020] Explanation of main component symbols: Fixture 100, base plate 10, first groove 10a, air intake hole 10b, first surface 11, second surface 12, first fixing hole 13, fixing mechanism 20, through hole 20a, first slot 20b, second slot 20c, third surface 21, fourth surface 22, telescopic mechanism 30, sealing component 31, first body 311, second body 312, second groove 312a, top surface 3121, bottom surface 3122, elastic component 32, fixing component 33, base 331, guide rod 332, sealing component 40, fifth surface 40a, sixth surface 40b, negative pressure device 50, first direction X, second direction Y.

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the features in the embodiments of this application can be combined with each other.

[0023] The following description sets forth numerous specific details to provide a thorough understanding of the embodiments of this application. The described implementations are only a portion, not all, of the embodiments described herein. All other implementations obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of the embodiments of this application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of this application belong. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application.

[0025] Please see Figure 1 and Figure 2This application provides a fixing fixture 100, which includes a base plate 10, a fixing mechanism 20, and a telescopic mechanism 30. Please refer to the following references. Figure 3 The base plate 10 has a first surface 11 and a second surface 12. The base plate 10 has a first groove 10a penetrating the first surface 11 and an air intake 10b penetrating the first surface 11 and the second surface 12, with the air intake 10b communicating with the first groove 10a. A fixing mechanism 20 is fixed to the base plate 10 and covers the first groove 10a. The fixing mechanism 20 has a third surface 21 and a fourth surface 22. The fixing mechanism 20 has a through hole 20a penetrating the third surface 21 and the fourth surface 22, and communicating with the first groove 10a and the air intake 10b. The telescopic mechanism 30 includes a sealing member 31, an elastic member 32, and a fixing member 33. The fixing member 33 and the elastic member 32 are located within the first groove 10a. The fixing member 33 is fixed to the bottom of the first groove 10a, and the elastic member 32 connects the fixing member 33 and the sealing member 31. The sealing member 31 protrudes from the third surface 21 and blocks the through hole 20a. In this embodiment, the elastic element 32 is sleeved on the outer periphery of the fixing element 33, and the sealing element 31 is connected to the elastic element 32.

[0026] In use, the fixing fixture 100 is connected to the external negative pressure device 50, so that negative pressure can be generated in the first groove 10a. When fixing the workpiece, the workpiece to be fixed is placed on the third surface 21 of the fixing mechanism 20, and a downward pressing force can be applied to the workpiece after placement. At this time, the sealing member 31 protruding from the third surface 21 contacts the workpiece and is subjected to the downward pressure of the workpiece, so that the elastic member 32 is compressed and the sealing member 31 is pressed below the third surface 21, thereby exposing part or all of the through hole 20a, that is, the through hole 20a is not completely blocked by the sealing member 31 at this time. Since there is negative pressure in the first groove 10a, the workpiece is fixed to the fixing fixture 100 by the negative pressure through the through hole 20a. When it is necessary to release the workpiece, the negative pressure device 50 can be stopped, the workpiece can be removed without the negative pressure, at this time, the elastic member 32 restores its deformation, so that the sealing member 31 re-seals the through hole 20a, restoring the fixture to its initial state.

[0027] In some implementations, please refer to Figure 4 The fixing member 33 includes a base 331 and a guide rod 332. The base 331 is fixed to the bottom surface 3122 of the first groove 10a, and the guide rod 332 is located in the first groove 10a and connected to the surface of the base 331 opposite to the base plate 10. The base 331 is used to fix the guide rod 332, and the guide rod 332 provides guidance for the elastic member 32, so that the elastic member 32 moves along the guide rod 332 when compressed or stretched, reducing the probability that the sealing member 31 will fail to seal the through hole 20a due to the elastic member 32 deviating from the guide rod 332.

[0028] In some implementations, please refer to Figure 4 The elastic element 32 is a spring, which is sleeved on the outer periphery of the guide rod 332. The pressure of the workpiece causes the sealing element 31 to move downward to expose the through hole 20a. At the same time, the pressure causes the spring to contract and deform. After the pressure is removed, the spring's deformation restoring force causes the sealing element 31 to move upward to seal the through hole 20a.

[0029] In some implementations, please refer to Figure 4 The sealing component 31 includes a first body 311 and a second body 312. The first body 311 passes through the through hole 20a and protrudes from the third surface 21, while the second body 312 is located within the first groove 10a. The second body 312 is connected to the side of the first body 311 facing the base plate 10. The maximum diameter of the first body 311 is equal to the diameter of the through hole 20a, and the diameter of the first body 311 gradually decreases along the direction from the second body 312 toward the first body 311. The maximum diameter of the first body 311 being equal to the diameter of the through hole 20a allows the first body 311 to completely seal the through hole 20a, which is beneficial for maintaining the stability of the negative pressure inside the fixing fixture 100. The gradual decrease in the diameter of the first body 311 along the direction from the second body 312 toward the first body 311 facilitates the exposure of the through hole 20a and promotes the adsorption of the workpiece by the negative pressure.

[0030] In some embodiments, the side of the second body 312 facing away from the first body 311 can be fixedly connected to the elastic element 32. Since the sealing element 31 mainly relies on the restoring force of the elastic element 32 to return to its initial position, fixing one side of the second body 312 to the elastic element 32 can strengthen the connection between the sealing element 31 and the elastic element 32, making it less likely for the sealing element 31 and the elastic element 32 to detach during movement, thus not affecting the repeated use of the fixing fixture 100. In other embodiments, the side of the second body 312 facing away from the first body 311 can also contact the elastic element 32 but not be fixedly connected, as long as it does not affect the sealing element 31 from driving the elastic element 32 to be compressed or from the sealing element 31 moving back to its initial position under the restoring force of the elastic element 32.

[0031] In some implementations, please refer to Figure 4The second body 312 has a top surface 3121 and a bottom surface 3122. The first body 311 is connected to the top surface 3121. The second body 312 has a second groove 312a that penetrates the bottom surface 3122. The elastic element 32 is partially accommodated in the second groove 312a. By accommodating the elastic element 32 in the second groove 312a, the elastic element 32 and the sealing element 31 do not need to be fixed to each other to achieve a linkage effect. When the sealing element 31 is subjected to pressure from the workpiece, the elastic element 32 can be compressed. When the pressure applied to the sealing element 31 is removed, the elastic element 32 restores its deformation and simultaneously drives the sealing element 31 back to its initial position. This method also facilitates the replacement of the elastic element 32.

[0032] In some implementations, please refer to Figure 1 and Figure 2 The fixing mechanism 20 includes multiple through holes 20a, which are arranged at intervals along a first direction X and a second direction Y, with the first direction X intersecting the second direction Y. The fixing mechanism 20 also includes multiple telescopic mechanisms 30, each corresponding to a through hole 20a. The multiple through holes 20a enhance the negative pressure adsorption effect of the fixing fixture 100 on the workpiece, thus improving the stability of the fixed workpiece. The interval arrangement of the multiple through holes 20a along the first direction X and the second direction Y increases the orderliness of the through hole distribution, making the through holes 20a more uniform. Therefore, for workpieces of different sizes, the point of application of negative pressure on the workpiece can be evenly distributed, increasing the uniformity of the force on the workpiece and the firmness of the workpiece when adsorbed by negative pressure. In other words, workpieces of different sizes can be reliably fixed on the fixing fixture 100, enhancing the versatility of the fixing fixture 100.

[0033] In some implementations, please refer to Figure 1 and Figure 2 The fixing mechanism 20 has at least two first slots 20b and at least two second slots 20c. The first slots 20b and the second slots 20c penetrate the third surface 21. The at least two first slots 20b are spaced apart along a first direction X, and the at least two second slots 20c are spaced apart along a second direction Y. The first direction X and the second direction Y intersect. Each through hole 20a is located between each pair of adjacent first slots 20b and between each pair of adjacent second slots 20c. Please refer to the reference section. Figure 5The fixing fixture 100 also includes a sealing element 40, which is located within the first slot 20b and the second slot 20c. The sealing element 40 has opposing fifth surfaces 40a and sixth surfaces 40b. The fifth surface 40a is close to the bottom of the first slot 20b or the bottom of the second slot 20c, and the sixth surface 40b protrudes from the third surface 21. The sealing element 40 is elastic; for example, it can be made of an elastic material such as a rubber strip. The selection of an elastic material for the sealing element 40 is intended to allow it to contract and deform to a certain extent when the workpiece is pressed down, so that the sixth surface 40b of the sealing element 40 can be pressed flush with the third surface 21, thus not affecting the negative pressure's adsorption effect on the workpiece. A first slot 20b and a second slot 20c are provided, and a sealing element 40 is placed in the first slot 20b and the second slot 20c. The sixth surface 40b of the sealing element 40 protrudes from the third surface 21 of the fixing mechanism 20, which allows the through hole 20a to be isolated in an independent space by the sealing element 40. When there are multiple through holes 20a, the sealing element 40 can isolate each through hole 20a in its corresponding independent space, that is, isolate each through hole 20a, so that each through hole 20a and its corresponding telescopic mechanism 30 can work independently. When one of the through holes 20a cannot generate negative pressure on the workpiece for some reason, it does not affect the negative pressure adsorption effect of the other through holes 20a on the workpiece, thereby improving the working stability of the fixture.

[0034] In some embodiments, the diameter of the first body 311 gradually decreases along the direction of the second body 312 toward the first body 311. The diameter of the first body 311 gradually decreases along the direction of the second body 312 toward the first body 311. For example, the shape of the first body 311 can be hemispherical, conical, or frustum-shaped, and its diameter gradually decreases along the direction of the second body 312 toward the first body 311. This allows the sealing member 31 to be pressed down slightly compared to its initial state to expose part of the through hole 20a, enabling the workpiece to come into contact with negative pressure and be fixed by it, without the sealing member 31 needing to be completely pressed below the third surface 21 to expose the through hole 20a. Especially when the fixing fixture 100 is equipped with a sealing member 40, since the sixth surface 40b of the sealing member 40 protrudes from the third surface 21 of the fixing mechanism 20, when the workpiece is placed on the fixing fixture 100, the sealing member 40 maintains a certain distance between the lower surface of the workpiece and the apex of the first body 311. Setting the diameter of the first body 311 to gradually decrease along the direction from the second body 312 toward the first body 311 is beneficial for the workpiece to expose part of the through hole 20a during the pressing process, at which point a negative pressure adsorption effect can be generated without having to wait for the sealing part 31 to be completely pressed to the third surface 21 to generate a negative pressure adsorption effect.

[0035] In other embodiments, the first body 311 may also be approximately rectangular or cylindrical, meaning the diameter of the first body 311 remains unchanged. When the first body 311 is rectangular, the shape of the through hole 20a can be set to a square shape that matches the shape of the first body 311, thereby facilitating the sealing member 31's sealing of the through hole 20a. The first body 311 and the through hole 20a can be adaptively adjusted to match each other in shape and size (diameter).

[0036] In some implementations, please refer to Figure 3 The fixture 100 also includes a negative pressure device 50, which is connected to and communicates with the suction port 10b. The negative pressure device 50 provides an internal negative pressure environment for the fixture 100, for example, creating a negative pressure state in the internal space between the base plate 10 and the fixing mechanism 20, thereby fixing the workpiece to the fixture 100 through negative pressure adsorption. The negative pressure device 50 can be a vacuum pump or similar device.

[0037] In some embodiments, the base plate 10 is provided with a first fixing hole 13, which penetrates the first surface 11 and the second surface 12. The fixing mechanism 20 is provided with a second fixing hole (not shown), which penetrates the fourth surface 22. The first fixing hole 13 and the second fixing hole are used to fix the base plate 10 and the fixing mechanism 20. For example, the base plate 10 and the fixing mechanism 20 can be fixed by simultaneously inserting screws or bolts into the first fixing hole 13 and the second fixing hole.

[0038] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A fixing fixture, characterized in that, include: The base plate has a first surface and a second surface opposite to each other. The base plate is provided with a first groove penetrating the first surface and an air intake hole penetrating the first surface and the second surface. The air intake hole is in communication with the first groove. A fixing mechanism, fixed to the base plate and covering the first groove, the fixing mechanism having opposing third and fourth surfaces, the fixing mechanism having a through hole penetrating the third and fourth surfaces, and the through hole communicating with the first groove and the air intake hole; and The telescopic mechanism includes a sealing element, an elastic element, and a fixing element. The fixing element and the elastic element are located in the first groove. The fixing element is fixed to the bottom of the first groove. The elastic element is connected between the fixing element and the sealing element. The sealing element protrudes from the third surface and blocks the through hole.

2. The fixing fixture as described in claim 1, characterized in that, The fastener includes a base and a guide rod. The base is fixed to the bottom surface of the first groove, and the guide rod is located inside the first groove and connected to the surface of the base opposite to the bottom plate.

3. The fixing fixture as described in claim 2, characterized in that, The elastic element is a spring, which is sleeved on the outer periphery of the guide rod.

4. The fixing fixture as described in claim 1, characterized in that, The sealing component includes a first body and a second body. The first body passes through the through hole and protrudes from the third surface. The second body is located in the first groove. The maximum diameter of the first body is equal to the diameter of the through hole. The diameter of the first body gradually decreases along the direction from the second body toward the first body.

5. The fixing fixture as described in claim 4, characterized in that, The second body is fixedly connected to the elastic element on the side opposite to the first body.

6. The fixing fixture as described in claim 4, characterized in that, The second body has a top surface and a bottom surface opposite each other. The first body is connected to the top surface. The second body is provided with a second groove that penetrates the bottom surface. The elastic element is partially accommodated in the second groove.

7. The fixing fixture as described in claim 1, characterized in that, The fixing mechanism includes a plurality of through holes, which are arranged at intervals along a first direction and a second direction, the first direction intersecting the second direction. The fixing mechanism also includes a plurality of telescopic mechanisms, each corresponding to one of the through holes.

8. The fixing fixture as described in claim 1, characterized in that, The fixing mechanism is provided with at least two first slots and at least two second slots, the first slots and the second slots penetrating the third surface. The at least two first slots are spaced apart along a first direction, and the at least two second slots are spaced apart along a second direction. The first direction intersects the second direction. Each through hole is located between each pair of adjacent first slots and between each pair of adjacent second slots. The fixing fixture also includes a sealing element located within the first slots and the second slots. The sealing element has opposing fifth and sixth surfaces. The fifth surface is close to the bottom of the first slot or the bottom of the second slot, and the sixth surface protrudes from the third surface. The sealing element is elastic.

9. The fixing fixture as described in claim 1, characterized in that, The fixing fixture also includes a negative pressure device, which is connected to and communicates with the air intake.

10. The fixing fixture as described in claim 1, characterized in that, The base plate is provided with a first fixing hole that penetrates the first surface and the second surface. The fixing mechanism is provided with a second fixing hole that penetrates the fourth surface. The first fixing hole and the second fixing hole are used to fix the base plate and the fixing mechanism.

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