Composite fixture combining physical clamping and negative pressure adsorption

Abstract

This utility model relates to the field of composite fixture technology, and discloses a composite fixture combining physical clamping and negative pressure adsorption, comprising: a placement platform, wherein an adsorption groove is installed in the middle of the placement platform, and a negative pressure hole is provided at the center of the adsorption groove; and a physical clamping assembly, wherein the physical clamping assembly includes a first cylinder and a second cylinder, the first cylinder is installed on the rear side of the placement platform, the output end of the first cylinder is connected to an end plate, and an end baffle is installed on the front side of the placement platform. The beneficial effects of adopting the above technical solution are: by providing an adsorption groove and a negative pressure hole on the placement platform, and connecting the negative pressure hole to a vacuum generator, the negative pressure hole adsorbs the bottom of the profile workpiece; by providing a second cylinder, a first cylinder, an end plate, an end baffle, a side plate, and a side baffle on the placement platform, it is convenient to clamp the front and rear sides and left and right sides of the profile workpiece; and by utilizing physical clamping and negative pressure adsorption, the workpiece can be clamped in multiple directions.

Description

Technical Field

[0001] This utility model relates to the field of composite fixture technology, specifically a composite fixture that combines physical clamping and negative pressure adsorption. Background Technology

[0002] Traditional physical clamping (such as jigs and chucks) relies on the clamping force of mechanical structures to fix workpieces. For long, narrow profile workpieces, on the one hand, if the clamping force is too large, it can easily cause scratches and deformation on the workpiece surface; if the clamping force is insufficient, it cannot effectively fix the workpiece, especially during high-speed operation on automated production lines or when the workpiece is subjected to external forces (such as cutting forces), which can easily lead to workpiece displacement or detachment. On the other hand, to adapt to long, narrow profile workpieces of different specifications, physical clamping structures often need frequent adjustments, or even jig replacements, resulting in poor versatility, high debugging costs, and difficulty in meeting the needs of flexible production.

[0003] Negative pressure adsorption fixes workpieces using vacuum adsorption force. While this avoids damage to the workpiece surface from physical contact, its reliability is significantly affected by the workpiece material, shape, and surface flatness. For long, narrow workpieces, using only negative pressure adsorption can easily lead to sagging and deformation in the middle section due to uneven force along the workpiece's length (such as localized negative pressure leakage or insufficient adsorption force). This is especially problematic when the workpiece is heavy or requires high cutting forces, making it difficult to guarantee adsorption stability. Furthermore, traditional negative pressure adsorption structures often have a single-channel airflow distribution, which can easily lead to airflow concentration in localized areas, further reducing the uniformity and reliability of adsorption. Utility Model Content

[0004] The purpose of this invention is to provide a composite fixture combining physical clamping and negative pressure adsorption to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite fixture combining physical clamping and negative pressure adsorption, comprising: A placement platform, wherein an adsorption tank is installed in the middle of the placement platform, and a negative pressure hole is provided at the center of the adsorption tank; A physical clamping assembly includes a first cylinder and a second cylinder. The first cylinder is installed on the rear side of the placement platform, and an end plate is connected to the output end of the first cylinder. An end baffle is installed on the front side of the placement platform. The second cylinder is installed on one side of the placement platform, and a side plate is connected to the output end of the second cylinder. A side baffle is connected to the other side of the placement platform.

[0006] The beneficial effects of adopting the above technical solution are as follows: by providing an adsorption groove and a negative pressure hole on the placement table, and connecting the negative pressure hole to a vacuum generator, the negative pressure hole adsorbs the bottom of the profile workpiece. By providing a second cylinder, a first cylinder, an end plate, an end baffle, a side plate, and a side baffle on the placement table, it is convenient to clamp the front and rear sides and the left and right sides of the profile workpiece. By using physical clamping and negative pressure adsorption, the workpiece is clamped in multiple directions.

[0007] As a further improvement of this utility model, the physical clamping assembly further includes an end push block and a side push block. An end push block is installed on the front side of the end plate, and a side push block is installed on one side of the side plate.

[0008] The beneficial effect of adopting the above technical solution is that the end plate and the side plate are respectively provided with end push blocks and side push blocks, which facilitates the clamping of the workpiece using end push blocks and side push blocks.

[0009] As a further improvement of this utility model, the side push block and the end push block are L-shaped.

[0010] The beneficial effects of adopting the above technical solution are: by utilizing the shape characteristics of the side push block and the end push block, they can better fit with the edge and corner contour of the workpiece, achieve precise positioning, and ensure the positional accuracy of the workpiece in the fixture.

[0011] As a further improvement of this utility model, a support frame is fixedly installed on both the front and rear sides of the bottom of the placement platform, and a square groove is opened on the outer side of the support frame.

[0012] The beneficial effects of adopting the above technical solution are: the support frame and square groove at the bottom of the placement platform facilitate the support of the placement platform, and the square groove on the support frame facilitates the connection of the support frame with other equipment.

[0013] As a further improvement of this utility model, mounting holes are provided on both the side baffle and the end baffle, and a plurality of mounting holes are provided.

[0014] The beneficial effects of adopting the above technical solution are: the installation holes on the side baffle and the end baffle facilitate the connection with the placement platform; at the same time, while ensuring structural strength, the installation holes reduce the weight of the side baffle and the end baffle, and also facilitate processing and manufacturing.

[0015] As a further improvement of this utility model, there are two second cylinders, side plates, side push blocks and side baffles, and the two second cylinders, side plates, side push blocks and side baffles are located on the same side of the placement platform.

[0016] The beneficial effects of adopting the above technical solution are: by having two components, namely the second cylinder, the side plate, the side push block, and the side baffle, it is easier to increase the range of clamping the workpiece on the side and improve stability.

[0017] As a further improvement of this utility model, the adsorption groove is in the shape of a grid, and the adsorption groove is disposed between the side plate and the side baffle.

[0018] The beneficial effects of adopting the above technical solution are: the adsorption tank is grid-shaped to disperse the adsorption airflow and to completely adhere to the bottom surface of the workpiece.

[0019] As a further improvement of this utility model, buffer pads are provided on the side of the end push block and the end baffle that are close to each other, and on the side of the side push block and the side baffle that are close to each other.

[0020] The beneficial effects of adopting the above technical solution are: buffer pads are provided on the side of the end push block and the end baffle that are close to each other, and on the side of the side push block and the side baffle that are close to each other, to avoid damage to the workpiece surface during clamping. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the composite fixture combining physical clamping and negative pressure adsorption of this utility model; Figure 2 This is a schematic diagram of the physical clamping component structure of the composite fixture of physical clamping and negative pressure adsorption of this utility model. Figure 3 This is a schematic diagram of the workpiece placed on the adsorption tank in the composite fixture of physical clamping and negative pressure adsorption of this utility model. Figure 4 This is a schematic diagram of the workpiece clamping structure of the composite fixture of physical clamping and negative pressure adsorption of this utility model.

[0023] In the diagram: 1. Placement platform; 2. Adsorption tank; 3. Negative pressure hole; 4. Physical clamping assembly; 41. First cylinder; 42. End plate; 43. End push block; 44. Second cylinder; 45. Side plate; 46. Side push block; 47. Side baffle; 48. End baffle; 5. Support frame; 6. Square groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-4 This utility model provides a composite fixture combining physical clamping and negative pressure adsorption, comprising: Placement platform 1, with an adsorption tank 2 installed in the middle of the placement platform 1, and a negative pressure hole 3 provided in the center of the adsorption tank 2. The physical clamping assembly 4 includes a first cylinder 41 and a second cylinder 44. The first cylinder 41 is installed on the rear side of the placement platform 1, and the output end of the first cylinder 41 is connected to an end plate 42. An end baffle 48 is installed on the front side of the placement platform 1, and the second cylinder 44 is installed on one side of the placement platform 1. The output end of the second cylinder 44 is connected to a side plate 45, and a side baffle 47 is connected to the other side of the placement platform 1.

[0026] The beneficial effects of adopting the above technical solution are as follows: the placement table 1 is provided with an adsorption groove 2 and a negative pressure hole 3, and the negative pressure hole 3 is connected to a vacuum generator, so that the negative pressure hole 3 adsorbs the bottom of the profile workpiece. The placement table 1 is provided with a second cylinder 44, a first cylinder 41, an end plate 42, an end baffle 48, a side plate 45 and a side baffle 47, which facilitates the clamping of the front and rear sides and the left and right sides of the profile workpiece. The workpiece is clamped in multiple directions by physical clamping and negative pressure adsorption.

[0027] In one embodiment of the present invention, the physical clamping assembly 4 further includes an end push block 43 and a side push block 46. The end push block 43 is installed on the front side of the end plate 42, and the side push block 46 is installed on one side of the side plate 45.

[0028] The beneficial effect of adopting the above technical solution is that the end plate 42 and the side plate 45 are respectively provided with end push block 43 and side push block 46, which facilitates the clamping of the workpiece by using end push block 43 and side push block 46.

[0029] In one embodiment of this utility model, the side push block 46 and the end push block 43 are L-shaped.

[0030] The beneficial effects of adopting the above technical solution are: by utilizing the shape characteristics of the side push block 46 and the end push block 43, they can better fit with the edge and corner contours of the workpiece, achieve precise positioning, and ensure the positional accuracy of the workpiece in the fixture.

[0031] In one embodiment of this utility model, a support frame 5 is fixedly installed on the front and rear sides of the bottom of the placement platform 1, and a square groove 6 is provided on the outer side of the support frame 5.

[0032] The beneficial effects of adopting the above technical solution are: the support frame 5 and square groove 6 are provided at the bottom of the placement platform 1, which facilitates the support of the placement platform 1. At the same time, the square groove 6 is provided on the support frame 5, which facilitates the connection of the support frame 5 with other equipment.

[0033] In one embodiment of this utility model, both the side baffle 47 and the end baffle 48 are provided with mounting holes, and there are a plurality of mounting holes.

[0034] The beneficial effects of adopting the above technical solution are: the installation holes on the side baffle 47 and the end baffle 48 facilitate the connection with the placement platform 1. At the same time, while ensuring the structural strength, the installation holes reduce the weight of the side baffle 47 and the end baffle 48, and also facilitate processing and manufacturing.

[0035] In one embodiment of this utility model, there are two second cylinders 44, side plates 45, side push blocks 46 and side baffles 47, and both second cylinders 44, side plates 45, side push blocks 46 and side baffles 47 are located on the same side of the placement platform 1.

[0036] The beneficial effects of adopting the above technical solution are: by having two components, namely the second cylinder 44, the side plate 45, the side push block 46, and the side baffle 47, it is easier to increase the range of clamping the side of the workpiece and improve stability.

[0037] In one embodiment of this utility model, the adsorption groove 2 is in the shape of a grid and is disposed between the side plate 45 and the side baffle 47.

[0038] The beneficial effects of adopting the above technical solution are: the adsorption tank 2 is grid-shaped to disperse the adsorption airflow and to completely adhere to the bottom surface of the workpiece.

[0039] In one embodiment of this utility model, buffer pads are provided on the side of the end push block 43 and the end baffle 48 that are close to each other, and on the side of the side push block 46 and the side baffle 47 that are close to each other.

[0040] The beneficial effects of adopting the above technical solution are: buffer pads are provided on the side of the end push block 43 and the end baffle 48 that are close to each other, and on the side of the side push block 46 and the side baffle 47 that are close to each other, so as to avoid damage to the surface of the workpiece during clamping.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compound jig of physical clamping and negative pressure adsorption, characterized in that, include: A placement platform, wherein an adsorption tank is installed in the middle of the placement platform, and a negative pressure hole is provided at the center of the adsorption tank; A physical clamping assembly includes a first cylinder and a second cylinder. The first cylinder is installed on the rear side of the placement platform, and an end plate is connected to the output end of the first cylinder. An end baffle is installed on the front side of the placement platform. The second cylinder is installed on one side of the placement platform, and a side plate is connected to the output end of the second cylinder. A side baffle is connected to the other side of the placement platform.

2. The physical clamping and vacuum suction composite jig according to claim 1, wherein, The physical clamping assembly also includes an end push block and a side push block. An end push block is installed on the front side of the end plate, and a side push block is installed on one side of the side plate.

3. The composite fixture of physical clamping and negative pressure adsorption according to claim 2, characterized in that, The side push block and the end push block are L-shaped.

4. The composite fixture of physical clamping and negative pressure adsorption according to claim 1, characterized in that, Support frames are fixedly installed on the front and rear sides of the bottom of the placement platform, and square grooves are opened on the outer side of the support frames.

5. The composite fixture of physical clamping and negative pressure adsorption according to claim 1, characterized in that, Both the side baffle and the end baffle are provided with mounting holes, and there are several mounting holes.

6. The composite fixture of physical clamping and negative pressure adsorption according to claim 2, characterized in that, There are two second cylinders, side plates, side push blocks and side baffles, and both second cylinders, side plates, side push blocks and side baffles are located on the same side of the placement platform.

7. The composite fixture of physical clamping and negative pressure adsorption according to claim 1, characterized in that, The adsorption tank is grid-shaped and is disposed between the side plate and the side baffle.

8. The composite fixture of physical clamping and negative pressure adsorption according to claim 2, characterized in that, The end push block and the end baffle that are close to each other, and the side push block and the side baffle that are close to each other, are all provided with buffer pads.

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