Top adsorption type jig

Abstract

The utility model discloses a top adsorption type jig, and belongs to the technical field of jig machining. The upward ejection adsorption type jig comprises a machining panel and a mold core capable of getting close to the machining panel to form clamping force, a product middle frame is placed on the mold core, and a negative pressure positioning table is arranged on the mold core and used for forming negative pressure adsorption at the machining position where the product middle frame makes contact with the mold core. According to the utility model, the bottom surface of the processing panel is close to the top surface of the mold core to form a clamping force to limit the space of the product middle frame, but the vertical space for clamping the product middle frame is not completely fixed, so that the deformation of the product middle frame caused by the clamping force is reduced, and the negative pressure positioning table adsorbs the processing position to realize the complete fixation of the vertical space; and it is guaranteed that when the product middle frame is machined, the fluctuation problem in the deep machining process is avoided, and the stability of the machining depth size is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture processing, in particular to an upper adsorption type fixture. Background Art

[0002] Today, the 3C industry is developing rapidly, and the requirements for the precision and size of processed products are getting higher and higher. For example, high-precision processing of mobile phones, tablets, notebooks and other products, as well as ensuring that the weight of the products is lighter and the user experience is better have become the mainstream of the industry; when traditional CNC machine tools are processing the middle frame of the product, they need to use fixtures to fix the middle frame of the product to prevent the product from being displaced during drilling, turning and milling operations, which affects the processing accuracy.

[0003] In the prior art, the products to be processed are mostly fixed directly by clamping. However, ordinary clamping structures easily cause slight deformation of the clamped products, which leads to depth fluctuation problems due to deformation and cannot meet the stability of product processing depth dimensions. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the fluctuation of the processing depth caused by the clamping deformation of the frame of the product affects the processing size accuracy, and proposes an upper adsorption fixture.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The top adsorption fixture includes a processing panel and a mold core that can be approached to the processing panel to form a clamping force. The product middle frame is placed on the mold core, wherein a negative pressure positioning platform is provided on the mold core to form negative pressure adsorption at the processing position where the product middle frame contacts the mold core.

[0007] In order to improve the stability of adsorption on the product processing area, preferably, negative pressure suction holes are equidistantly provided on the negative pressure positioning platform, and an installation groove connected to the negative pressure suction holes is provided on the back of the mold core, and a negative pressure sealing block is installed in the installation groove.

[0008] In order to improve the integration effect of the equipment, it further includes a vacuum generator, and the suction end of the vacuum generator is connected to the installation groove through an air pipe.

[0009] In order to facilitate the inspection and maintenance of the equipment, further, both ends of the air pipe are detachably connected with suction joints, and the two sets of suction joints are respectively connected to the negative pressure sealing block and the vacuum generator.

[0010] Preferably, the vacuum generator is provided with an air inlet connector.

[0011] In order to achieve effective limitation of the product middle frame by the equipment, preferably, it also includes: a base, which is fixedly connected to the processing panel through guide pillars, the mold core is slidably connected to the guide pillars, and a cylinder fixedly connected to the base, and the output end of the cylinder is fixedly connected to the bottom surface of the mold core through a pull rod. When the cylinder is actuated, the mold core moves closer to or away from the processing panel.

[0012] In order to improve the stability of the clamping process, further, a positioning hole is opened on the mold core, a guide sleeve is installed in the positioning hole, and the guide sleeve is slidably matched with the guide column.

[0013] Preferably, the guide pillars are provided in four groups, and the four groups of guide pillars are equidistantly distributed on the base.

[0014] In order to ensure the safety of processing, preferably, a processing groove penetrating the thickness of the processing panel is opened on the processing panel, and the processing groove corresponds to the negative pressure positioning platform.

[0015] Furthermore, the processing groove is in an inverted trapezoidal structure, and the top surface area of ​​the processing groove located on the processing panel is larger than the bottom surface area.

[0016] Compared with the prior art, the utility model provides an upper suction fixture having the following features:

[0017] Beneficial effects:

[0018] 1. The top adsorption fixture has a negative pressure sealing block installed in the mounting groove to block the mounting groove, thereby forming a negative pressure cavity connected to multiple negative pressure suction holes, thereby achieving uniform negative pressure and synchronous action in the multiple negative pressure suction holes.

[0019] 2. The top adsorption fixture uses a guide sleeve to ensure the stability of the mold core when it is frequently raised and lowered, preventing the product thereon from being dislocated when the mold core moves.

[0020] 3. The top adsorption fixture has an inverted trapezoidal processing groove on the processing panel. On the one hand, it is convenient for CNC processing to identify the processing position, and on the other hand, it prevents the problem of collision between the processing panel 3 and the tool during the processing.

[0021] The parts not involved in the device are the same as the prior art or can be implemented by the prior art. The utility model processes the bottom surface of the panel close to the top surface of the mold core to form a clamping force to limit the space of the product middle frame, but does not completely fix the vertical space of the clamping force, thereby reducing the deformation of the product middle frame caused by the clamping force. Instead, the negative pressure positioning table adsorbs the processing position to achieve complete fixation of the vertical space, ensuring that when the product middle frame is processed, there will be no fluctuation in the depth of the processing, effectively ensuring the stability of the processing depth size. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of the top adsorption fixture proposed by the utility model from the first perspective;

[0023] Figure 2 This is a structural schematic diagram of the upper adsorption fixture proposed by the utility model from a second perspective;

[0024] Figure 3 This is a structural schematic diagram of the top adsorption fixture proposed by the utility model from a third perspective;

[0025] Figure 4 Schematic diagram of the core structure of the top adsorption fixture proposed in the utility model Figure 1 ;

[0026] Figure 5 Schematic diagram of the core structure of the top adsorption fixture proposed in the utility model Figure 2 .

[0027] In the figure: 1. base; 2. cylinder; 3. processing panel; 4. processing groove; 5. mold core; 6. mounting groove; 7. negative pressure suction hole; 8. negative pressure sealing block; 9. air pipe; 10. suction joint; 11. vacuum generator; 12. pull rod; 13. guide column; 14. guide sleeve; 15. negative pressure positioning platform; 16. air inlet joint; 17. positioning hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0030] Example:

[0031] Reference Figure 1-Figure 5The top adsorption fixture includes a processing panel 3 for CNC processing identification and a mold core 5 that can approach the processing panel 3 to form a clamping force on the product middle frame. The product middle frame is placed on the mold core 5. This structural form can limit the space of the product middle frame, but the clamping force is low and will not cause deformation of the mobile phone, tablet or notebook computer middle frame to be processed. A further design is that a negative pressure positioning platform 15 is provided in the processing area of ​​the mold core 5 to form negative pressure adsorption at the processing position where the product middle frame contacts the mold core 5, that is, when the product middle frame is placed on the mold core 5, the negative pressure positioning platform 15 can generate negative pressure to absorb the area to be processed of the product middle frame. The overall structure forms a clamping force by bringing the bottom surface of the processing panel 3 and the top surface of the mold core 5 close to each other to limit the space of the product middle frame, but does not completely fix the vertical space of the clamping force, thereby reducing the deformation of the product middle frame caused by the clamping force. Instead, the negative pressure positioning platform 15 absorbs the processing position to achieve complete fixation of its vertical space, ensuring that when the product middle frame is processed, there will be no fluctuation problem in the depth processing process, effectively ensuring the stability of the processing depth size.

[0032] The specific fixation of the processing position can be formed according to the following design structure, that is, 20-40 negative pressure suction holes 7 are equidistantly opened on the negative pressure positioning platform 15, and the preferred number of negative pressure suction holes 7 for the mobile phone middle frame here is 23, and the specific arrangement method is specially equidistantly designed according to the shape of the position to be processed; in addition, a mounting groove 6 connected to multiple negative pressure suction holes 7 is opened on the back of the mold core 5, and a negative pressure sealing block 8 is installed in the mounting groove 6 to seal the mounting groove 6, forming a negative pressure cavity connecting multiple negative pressure suction holes 7, thereby realizing a uniform negative pressure and synchronous action in multiple negative pressure suction holes 7, and a specific method of generating negative pressure includes a vacuum generator 11, and the suction end of the vacuum generator 11 is connected to the mounting groove 6 through an air pipe 9, and the two ends of the air pipe 9 are detachably connected with suction connectors 10, and the two sets of suction connectors 10 are respectively connected to the negative pressure sealing block 8 and the vacuum generator 11, so that it is convenient to replace and repair the air pipe 9, the vacuum generator 11, the negative pressure sealing block 8, etc.

[0033] The vacuum generator 11 is provided with an air inlet connector 16 .

[0034] The main structure of the top adsorption fixture also includes: a base 1, which is fixedly connected to the processing panel 3 through a guide column 13, a core 5 is slidably connected to the guide column 13, and a cylinder 2 is fixedly connected to the base 1. The output end of the cylinder 2 is fixedly connected to the bottom surface of the core 5 through a pull rod 12. When the cylinder 2 is extended, the core 5 approaches the processing panel 3 to achieve the displacement limitation of the entire product middle frame on the plane. Similarly, when the cylinder 2 retracts, the core 5 moves away from the processing panel 3 to place the middle frame of the product to be processed or remove the middle frame of the processed product. A positioning hole 17 is opened on the core 5, and a guide sleeve 14 is installed in the positioning hole 17. The guide sleeve 14 is slidably matched with the guide column 13. The guide sleeve 14 is used to ensure the stability of the core 5 when it is frequently raised and lowered, and to prevent the product thereon from being misplaced when the core 5 moves.

[0035] In addition, four groups of guide pillars 13 are provided, and the four groups of guide pillars 13 are equidistantly distributed on the base 1 .

[0036] A more specific design is that a processing groove 4 is opened on the processing panel 3 and runs through the thickness of the processing panel 3. The processing groove 4 corresponds to the negative pressure positioning platform 15. The processing groove 4 has an inverted trapezoidal structure. Specifically, the processing groove 4 is located on the top surface area of ​​the processing panel 3 is larger than the bottom surface area. On the one hand, it is convenient for CNC processing to identify the processing position. On the other hand, it prevents the problem of collision between the processing panel 3 and the tool during advance and retract processing.

[0037] In the utility model, there are positioning columns arranged around the negative pressure positioning platform 15 for positioning the product middle frame, which can also assist in limiting the displacement of the product middle frame in the horizontal plane, while making it convenient for the staff to take or place the product middle frame on the mold core 5.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The top adsorption fixture is characterized by: include: A processing panel (3) and a mold core (5) that can be close to the processing panel (3) to form a clamping force, wherein the mold core (5) is used to place a product middle frame, A negative pressure positioning platform (15) is provided on the mold core (5) for forming negative pressure adsorption at the processing position where the product middle frame contacts the mold core (5).

2. The top adsorption fixture according to claim 1 is characterized in that: Negative pressure suction holes (7) are equidistantly provided on the negative pressure positioning platform (15), a mounting groove (6) connected to the negative pressure suction holes (7) is provided on the back of the mold core (5), and a negative pressure sealing block (8) is installed in the mounting groove (6).

3. The top adsorption fixture according to claim 2 is characterized in that: It also comprises a vacuum generator (11), the suction end of the vacuum generator (11) being connected to the mounting groove (6) via an air pipe (9).

4. The top adsorption fixture according to claim 3 is characterized in that: Both ends of the air pipe (9) are detachably connected to air suction connectors (10), and two sets of air suction connectors (10) are respectively connected to the negative pressure sealing block (8) and the vacuum generator (11).

5. The top suction fixture according to claim 3 or 4, characterized in that: The vacuum generator (11) is provided with an air inlet connector (16).

6. The top suction fixture according to claim 1, characterized in that: Also includes: The base (1) is fixedly connected to the processing panel (3) via a guide column (13), and the mold core (5) is slidably connected to the guide column (13). A cylinder (2) is fixedly connected to the base (1), and the output end of the cylinder (2) is fixedly connected to the bottom surface of the mold core (5) through a pull rod (12). When the cylinder (2) is in motion, the mold core (5) moves closer to or farther from the processing panel (3).

7. The top suction fixture according to claim 6, characterized in that: The mold core (5) is provided with a positioning hole (17), a guide sleeve (14) is installed in the positioning hole (17), and the guide sleeve (14) is slidably matched with the guide column (13).

8. The top suction fixture according to claim 6 or 7, characterized in that: The guide pillars (13) are provided in four groups.

9. The top suction fixture according to claim 1, characterized in that: The processing panel (3) is provided with a processing groove (4) penetrating the thickness of the processing panel (3), and the processing groove (4) corresponds to the negative pressure positioning platform (15).

10. The top suction fixture according to claim 9, characterized in that: The processing groove (4) is in an inverted trapezoidal structure, and the top surface area of ​​the processing groove (4) located on the processing panel (3) is larger than the bottom surface area.

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