Conductive rubber strip sticking tool

Abstract

The utility model discloses a kind of electrically-conductive adhesive strip pasting tool, it is related to mechanical tooling technical field, to solve the problem of low precision, poor flatness and operation interference of narrow long contact surface workpiece electrically-conductive adhesive strip pasting. The tool includes limiting tool and positioning tool, positioning tool is correspondingly installed in the four corners of the bottom of the workpiece to be operated to realize positioning, limiting tool is set between positioning tool and workpiece and one-to-one correspondence;Limiting tool contains positioning surface and reference surface, vertically connected into the L-shaped structure with opening towards positioning tool, its positioning surface is attached to the top of positioning tool to provide pasting reference surface, reference surface is attached to the side of positioning tool towards workpiece. The tool can provide accurate positioning and rigid support for electrically-conductive adhesive strip, guarantee pasting flatness, adapt to workpiece corner structure, convenient to operate, suitable for electrically-conductive adhesive strip pasting operation of narrow long contact surface such as electronic equipment shell.

Description

Technical Field

[0001] This application relates to the field of mechanical tooling technology, specifically a tooling for attaching conductive adhesive strips to narrow and long contact surfaces. Background Technology

[0002] In the field of mechanical tooling technology, conductive adhesive strips (such as aluminum-plated silver conductive rubber) are widely used for sealing gaps in workpieces such as electronic device housings and shielding enclosures, and are key components for achieving electromagnetic shielding. However, in actual production, applying conductive adhesive strips to workpieces with narrow and long contact surfaces presents numerous challenges: The lack of positioning reference at corners makes it difficult to attach conductive adhesive strips: The areas where conductive adhesive strips need to be attached to the workpieces are concentrated at the four bottom corners and adjacent sides. In the current operation, there is no dedicated positioning structure for corners. When attaching manually, it is impossible to determine the start and end positions of the adhesive strips, which can easily cause the adhesive strips to shift at the corners and exceed the preset attachment range. This is especially true for narrow and long contact surfaces (such as the bottom edge of a square shell cover with a wall thickness of 2mm), where the redundancy space is extremely small. Shifting directly damages the sealing and shielding performance of the workpiece. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a versatile and easy-to-operate conductive adhesive strip pasting fixture, enabling the conductive adhesive strip to be quickly and straightly pasted onto specific narrow and long positions on a workpiece. The specific solution is as follows: A conductive adhesive strip pasting fixture includes: a limiting fixture and a positioning fixture; The positioning fixtures are respectively installed at the four corners of the bottom of the workpiece to be operated, and are used to position the conductive adhesive strips. The limiting fixtures are respectively disposed between the positioning fixture and the workpiece to be operated; The limiting fixture and the positioning fixture are configured in a one-to-one correspondence, and the limiting fixture includes a positioning surface and a reference surface; The positioning surface is located at the top of the reference surface, and one end is perpendicularly connected to the other end of the reference surface to form an L-shaped structure with the opening facing the positioning fixture. The limiting fixture is fastened to the top of the positioning fixture on the side facing the workpiece, and its positioning surface is attached to the top of the positioning fixture, providing a bonding reference surface for the conductive adhesive strip to be pasted.

[0004] Preferably, the positioning fixture is a rectangular columnar structure with rounded corners on all four sides; One side of the positioning fixture is parallel to the side wall of the workpiece to be worked on, and two positioning protrusions are provided on the top of each positioning fixture. The reference surfaces are respectively attached to the side of the positioning fixture facing the workpiece.

[0005] Preferably, a clearance groove for fixing the connecting parts of the positioning fixture is provided on the side of the positioning surface that fits against the top of the positioning fixture and faces the positioning fixture, so as to provide clearance space for the connecting parts of the fixing fixture.

[0006] Preferably, the clearance space matches the cross-sectional dimensions and shape of the connecting parts of the fixed tooling.

[0007] Preferably, the positioning surface that fits onto the top of the positioning fixture faces the side of the positioning fixture, and a clearance structure is provided at the position corresponding to the positioning protrusion to avoid interference with the positioning protrusion.

[0008] Preferably, the clearance clearance structure is an opening groove at the intersection of the positioning surface and the reference surface.

[0009] Preferably, the cross-sectional shape of the opening groove is one of a rectangle, trapezoid, or arc, which is specifically determined by the shape of the positioning protrusion.

[0010] Preferably, both the positioning fixture and the limiting fixture are metal fixtures.

[0011] Preferably, the reference surface is the same as the thickness of the conductive adhesive strip and the height of the positioning fixture.

[0012] Compared with the prior art, the beneficial effects of this application are as follows: This application installs positioning fixtures at the four corners of the bottom of the workpiece to be worked, using the corners as positioning anchor points to clearly define the start and end boundaries of the adhesive strip application. At the same time, the limiting fixture and the positioning fixture are connected one-to-one. Through the fit between the positioning surface and the top of the positioning fixture, and the fit between the reference surface and the side of the positioning fixture facing the workpiece, a precise spatial reference is provided for the adhesive strip, completely avoiding the problem of the adhesive strip shifting at the corners, especially suitable for the application requirements of narrow and long contact surfaces.

[0013] In this application, the limiting fixture has an L-shaped structure. The positioning surface in the L-shaped structure directly serves as the rigid reference surface for the conductive adhesive strip to be pasted, providing stable support for the flexible adhesive strip. The adhesive strip can be continuously pasted along the outer side of the reference surface, ensuring that the adhesive strip remains straight along the side of the workpiece, perfectly matching the direction of the workpiece gap, and improving the straightness accuracy of the adhesive strip pasting. The L-shaped opening of the limiting fixture faces the positioning fixture, and its structural dimensions are perfectly matched with the connection area of ​​the positioning fixture and the workpiece to be operated: the reference surface is attached to the side of the positioning fixture facing the workpiece, and the positioning surface is attached to the top of the positioning fixture. This avoids spatial interference between the limiting fixture and the positioning fixture, and can also closely fit the side of the workpiece. It can be stably placed without adjusting the tool angle, simplifying the operation process.

[0014] By setting the reference surface to be the same as the thickness of the conductive adhesive strip and the height of the positioning fixture, the height of the adhesive strip is perfectly matched with the height of the gap in the workpiece during the pasting process.

[0015] The entire tooling set consists only of a limiting tooling and a positioning tooling, without any complex transmission components. During installation, it is only necessary to fix the positioning tooling to the corner and fasten the limiting tooling to the positioning tooling to complete the preparation. No professional skills training is required for the staff to quickly stick the adhesive strips along the reference surface and the positioning surface, which greatly reduces the operation threshold. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of the use of a conductive adhesive strip pasting fixture as shown in an embodiment of this application; Figure 2 This application illustrates a positioning fixture position in a conductive adhesive strip pasting fixture. Schematic diagram; Figure 3 This application illustrates a limiting fixture in a conductive adhesive strip pasting tooling. Side view; Figure 4 for Figure 3 A cross-sectional view along the AA direction; List of components and reference numerals: 1. Positioning surface; 2. Reference surface; 3. Opening groove; 4. Clearance hole; 5. Square housing cover; 6. Square base; 7. Conductive adhesive strip; 8. Positioning fixture; 9. Connector; 10. Limiting fixture; 11. Positioning protrusion. Detailed Implementation

[0017] A conductive adhesive strip pasting fixture includes: a limiting fixture and a positioning fixture; The positioning fixtures are respectively installed at the four corners of the bottom of the workpiece to be operated, and are used to position the conductive adhesive strips. The limiting fixtures are respectively disposed between the positioning fixture and the workpiece to be operated; The limiting fixture and the positioning fixture are configured in a one-to-one correspondence, and the limiting fixture includes a positioning surface and a reference surface; The positioning surface is located at the top of the reference surface, and one end is perpendicularly connected to the other end of the reference surface to form an L-shaped structure with the opening facing the positioning fixture. The limiting fixture is fastened to the top of the positioning fixture on the side facing the workpiece, and its positioning surface is attached to the top of the positioning fixture, providing a bonding reference surface for the conductive adhesive strip to be pasted.

[0018] Furthermore, the positioning fixture is a rectangular columnar structure with rounded corners on all four sides; One side of the positioning fixture is parallel to the side wall of the workpiece to be worked on, and two positioning protrusions are provided on the top of each positioning fixture. The reference surfaces are respectively attached to the side of the positioning fixture facing the workpiece.

[0019] Furthermore, a clearance groove for fixing the connecting parts of the positioning fixture is provided on the side of the positioning surface that is attached to the top of the positioning fixture and faces the positioning fixture, so as to provide clearance space for the connecting parts of the fixing fixture.

[0020] Furthermore, the clearance space matches the cross-sectional dimensions and shape of the connecting parts of the fixed tooling.

[0021] Furthermore, the positioning surface that fits onto the top of the positioning fixture faces the side of the positioning fixture, and a clearance clearance structure is provided at the position corresponding to the positioning protrusion to avoid interference with the positioning protrusion.

[0022] In this application, the positioning protrusion may be a screw or other positioning block, fixed to the top of the positioning fixture.

[0023] Furthermore, the clearance clearance structure is an opening groove at the intersection of the positioning surface and the reference surface.

[0024] Furthermore, the cross-sectional shape of the opening groove is one of a rectangle, trapezoid, or arc, which is specifically determined by the shape of the positioning protrusion.

[0025] Furthermore, both the positioning fixture and the limiting fixture are metal fixtures.

[0026] Furthermore, the reference surface is the same as the thickness of the conductive adhesive strip and the height of the positioning fixture.

[0027] The present application is described in detail below with reference to the embodiments, but the present application is not limited to these embodiments.

[0028] Example like Figure 1 and Figure 2 As shown, in this embodiment, the workpieces to be operated on are a square housing cover 5 and a square base 6. A conductive adhesive strip 7 with a thickness of 1 mm and a width of 3 mm needs to be used to seal the opening of the square housing cover 5 and the base. Therefore, in this embodiment, four positioning fixtures 8 are provided. The four positioning fixtures 8 are located on the top of the square base 6 and are respectively set at the corners of the two ends of the square housing cover 5 where the conductive adhesive strip 7 needs to be pasted. like Figure 2 As shown, in this embodiment, the connecting member 9 that fixes the four positioning fixtures 8 to the top of the square base 6 is a bolt assembly; the bolt assembly is located at the center of the positioning fixtures 8, and the positioning fixtures 8 are respectively fixed to the square base 6 by the bolt assembly. Two positioning protrusions 11 are arranged opposite each other on opposite sides of the connecting member 9.

[0029] The limiting fixture 10 is formed by vertically connecting one end of the positioning surface 1 of the rectangular plate structure and the reference surface 2 of the rectangular plate structure. In this embodiment, the positioning surface 1 and the reference surface 2 are integrally formed. like Figure 3 and Figure 4 As shown, the positioning surface 1 faces the top of the positioning fixture 8, and an opening groove 3 is provided at the position corresponding to the positioning protrusion 11 on the top of the positioning fixture 8. The size and shape of the opening groove 3 match the positioning protrusion 11 so that when the positioning surface 1 is in contact with the top of the positioning fixture 8, the opening groove 3 can be just locked outside the positioning protrusion 11 to determine the vertical position of the limiting fixture 10.

[0030] A clearance hole 4 is provided in the center of the positioning surface 1. The size of the clearance hole 4 is slightly larger than the size of the connector (a bolt assembly in this embodiment) to avoid the bolt assembly affecting the fit between the positioning surface 1 and the top of the positioning fixture 8.

[0031] The reference surface 2 is perpendicularly connected to the positioning surface 1 and is used to fit tightly against the side of the square housing cover 5 facing the positioning fixture 8.

[0032] During application, the limiting fixture 10 is pressed onto the top of the positioning fixture 8, with the positioning surface 1 of the limiting fixture 10 adhering to the top of the positioning fixture 8 and the reference surface 2 adhering to the side of the positioning fixture 8 facing the square housing cover 5. The conductive adhesive strips 7 of the two limiting fixtures 10 located on the same side of the square housing cover 5 are arranged close to the outer side of the bottom of the reference surface 2 of the two limiting fixtures 10 located on the same side of the square housing cover 5, ensuring they are straight and aligned.

[0033] In this embodiment, the opening groove 3 is matched with the positioning protrusion 11.

[0034] Using the same steps and methods described above for attaching conductive adhesive strips at both ends of the square housing cover 5, the remaining two sides of the square housing cover 5 are then attached with conductive adhesive strips.

[0035] After attaching the conductive adhesive strips to the four sides of the opening of the square housing cover 5, first remove the limiting fixture, and then remove the positioning fixture.

[0036] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A conductive adhesive strip bonding fixture, characterized in that, include: Limiting fixtures and positioning fixtures; The positioning fixtures are respectively installed at the four corners of the bottom of the workpiece to be operated, and are used to position the conductive adhesive strips. The limiting fixtures are respectively disposed between the positioning fixture and the workpiece to be operated; The limiting fixture and the positioning fixture are configured in a one-to-one correspondence, and the limiting fixture includes a positioning surface and a reference surface; The positioning surface is located at the top of the reference surface, and one end is perpendicularly connected to the other end of the reference surface to form an L-shaped structure with the opening facing the positioning fixture. The limiting fixture is fastened to the top of the positioning fixture on the side facing the workpiece, and its positioning surface is attached to the top of the positioning fixture, providing a bonding reference surface for the conductive adhesive strip to be pasted.

2. The conductive adhesive strip pasting fixture according to claim 1, characterized in that, The positioning fixture is a rectangular column structure with rounded corners on all four sides; One side of the positioning fixture is parallel to the side wall of the workpiece to be worked on, and two positioning protrusions are provided on the top of each positioning fixture. The reference surfaces are respectively attached to the side of the positioning fixture facing the workpiece.

3. The conductive adhesive strip pasting fixture according to claim 2, characterized in that, A clearance groove for the connecting parts of the positioning fixture is provided on the side of the positioning surface that is attached to the top of the positioning fixture and faces the positioning fixture, so as to provide clearance space for the connecting parts of the positioning fixture.

4. The conductive adhesive strip bonding fixture according to claim 3, characterized in that, The clearance space is matched with the cross-sectional dimensions and shape of the connecting parts of the fixed tooling.

5. The conductive adhesive strip pasting fixture according to claim 2, characterized in that, The positioning surface that fits onto the top of the positioning fixture faces the side of the positioning fixture, and a clearance clearance structure is provided at the position corresponding to the positioning protrusion to avoid interference with the positioning protrusion.

6. The conductive adhesive strip pasting fixture according to claim 5, characterized in that, The clearance clearance structure is an opening groove at the intersection of the positioning surface and the reference surface.

7. The conductive adhesive strip pasting fixture according to claim 6, characterized in that, The cross-sectional shape of the opening groove is one of rectangle, trapezoid, or arc, depending on the shape of the positioning protrusion.

8. The conductive adhesive strip bonding fixture according to claim 1, characterized in that, Both the positioning fixture and the limiting fixture are metal fixtures.

9. The conductive adhesive strip pasting fixture according to claim 1, characterized in that, The reference surface is the same as the thickness of the conductive adhesive strip and the height of the positioning fixture.

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