A photocoupler de-adhesive cutting and stripping block

Abstract

This utility model relates to the field of optocoupler lead cutting technology, and in particular to an optocoupler de-adhesive cutting and lead-removing block. By setting a relief surface with a specific projection relationship at the bottom of the upper cavity, when the optocoupler is raised due to impurities, the inclined or arc-shaped structure of the relief surface changes the contact point between the lead pin and the lead-removing block from vertical shearing to progressive contact. The setting of the relief surface forms a physical relief space, which significantly reduces the stress concentration of the pins at the optocoupler package and greatly reduces the damage rate of the optocoupler pins. By adding a waste groove on the bottom surface of the lower cavity, metal debris generated by lead cutting can be actively collected, which to a certain extent eliminates the factor of the optocoupler being raised. Combined with the complete fit design between the bottom surface of the lower cavity and the optocoupler, it can also ensure the support capacity of the optocoupler and reduce the deformation of the optocoupler bracket during the lead cutting process. It solves the technical problem that the optocoupler pins may be cut off by the lead-removing block when the existing lead-removing block positions the components.

Description

Technical Field

[0001] This utility model relates to the field of optical coupler cutting technology, and in particular to an optical coupler de-adhesive cutting and stripping block. Background Technology

[0002] Currently, in the process of removing adhesive and cutting the connecting ribs between optocouplers, the main method used is to position the components (optocouplers) using a material-picking block, and then use a punch to cut off the connecting ribs between the components. The traditional material-picking block structure is as follows: Figure 3 As shown, in cases where traditional material stripping blocks are damaged or have debris adhering to the positioning area, such as the lower stripping block, there may be iron filings on the bottom surface of the lower cavity during the previous lead cutting process. This can lift up the components, causing the bottom surface of the lower cavity of the lower stripping block to not fit against the components. When the upper and lower stripping blocks are closed to clamp the optocoupler bracket, the lead pins of the components will be raised due to the lack of fit. At this time, when the upper and lower stripping blocks are pressed together for positioning, the lead pins of the components may be cut off. This will cause the components to fail during testing and use due to the cut lead pins. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an optocoupler de-adhesive cutting and stripping block, which solves the technical problem that the optocoupler pins may be cut off by the stripping block when positioning components using existing stripping blocks.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a photocoupler de-adhesive cutting and material-pulling block, comprising an upper material-pulling block and a lower material-pulling block for clamping the photocoupler bracket after being joined together. The bottom surface of the upper material-pulling block is provided with an upper cavity, and the top surface of the lower material-pulling block is provided with a lower cavity. The upper cavity and the lower cavity are used to accommodate the photocoupler after being joined together. The bottom of the upper cavity is provided with a clearance surface connecting the side wall of the upper cavity and the bottom surface of the upper material-pulling block. The projection of the upper edge of the clearance surface on the plane where the photocoupler bracket is located is located within the projection of the lower edge of the clearance surface on the plane where the photocoupler bracket is located.

[0005] Preferably, a clearance space is provided between the top of the upper cavity and the top surface of the optocoupler.

[0006] Preferably, the height of the clearance space is not less than the thickness of the optical coupler bracket.

[0007] Preferably, the bottom surface of the lower cavity is attached to the bottom surface of the optocoupler.

[0008] Preferably, the clearance surface is either a rounded corner or a chamfered corner.

[0009] Preferably, a waste trough is provided on the bottom surface of the lower cavity.

[0010] Preferably, the bottom of the lower cavity is provided with a second clearance surface that has the same structure as the clearance surface, and is used to connect the side wall of the lower cavity with the top surface of the lower feed block.

[0011] By employing the above technical solution, this utility model provides a photocoupler de-adhesive cutting and stripping block, which has at least the following beneficial effects:

[0012] 1. This utility model sets a clearance surface with a specific projection relationship at the bottom of the upper cavity. When the optocoupler tilts due to impurities, the inclined or arc-shaped structure of the clearance surface changes the contact point between the lead pin and the feed block from vertical shearing to progressive contact. The geometric feature that the projection of the upper edge of the clearance surface on the optocoupler bracket plane is located inside the projection of the lower edge forms a physical clearance space, which significantly reduces the stress concentration of the pins at the optocoupler package and greatly reduces the damage rate of the optocoupler pins.

[0013] 2. This utility model can actively collect metal scraps generated during rib cutting by adding a waste trough to the bottom surface of the lower cavity, thereby eliminating the factor of raising the optocoupler to a certain extent. Combined with the design of the complete fit between the bottom surface of the lower cavity and the optocoupler, it can also ensure the support capacity of the optocoupler and reduce the deformation of the optocoupler bracket during the rib cutting process.

[0014] 3. By setting the height of the clearance space, this utility model creates a safe gap between the top wall of the upper cavity and the top of the optocoupler. This design can greatly reduce the risk of the package breaking under pressure. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the upper and lower material feeding blocks of this utility model;

[0017] Figure 2 This is a schematic diagram of the upper and lower material blocks clamping the optocoupler bracket according to this utility model;

[0018] Figure 3 for Figure 2 Point A in the middle is an enlarged view of the traditional scheme;

[0019] Figure 4 This utility model Figure 2 Point A in the middle is an enlarged view of this utility model;

[0020] Figure 5 This is a schematic diagram of the avoidance surface of this utility model;

[0021] Figure 6 This is a schematic diagram of the waste trough of this utility model.

[0022] In the diagram: 1. Upper feed block; 2. Lower feed block; 3. Upper cavity; 4. Lower cavity; 5. Clearance surface; 6. Waste trough. Detailed Implementation

[0023] 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.

[0024] To address the technical problem that existing component-positioning blocks may cut off optocoupler leads during component positioning, this invention provides an optocoupler de-adhesive and lead-cutting component-positioning block. The corner where the component-positioning block contacts the optocoupler bracket is improved to reduce the shearing force on the optocoupler leads, thereby reducing the probability of lead cutting. It includes an upper component-positioning block 1 and a lower component-positioning block 2 for clamping the optocoupler bracket after assembly, preventing slippage during lead cutting. The upper component-positioning block 1 has an upper cavity 3 on its bottom surface, and the lower component-positioning block 2 has a lower cavity 4 on its top surface. The upper and lower cavities 3, when assembled, accommodate the optocoupler. The bottom of the upper cavity 3 has a clearance surface 5 connecting the sidewall of the upper cavity 3 to the bottom surface of the upper component-positioning block 1. The projection of the upper edge of the clearance surface 5 onto the plane of the optocoupler bracket lies within the projection of the lower edge of the clearance surface 5 onto the plane of the optocoupler bracket. For ease of processing, the clearance surface 5 can be either a rounded corner or a chamfered corner. Figure 3 , Figure 4 and Figure 5 As shown, when the optocoupler is padded, Figure 3 If the clearance surface 5 is not present, the corner of the bottom surface of the upper cavity 3 will directly contact the optocoupler pin on the outer wall of the optocoupler. As a result, the corner of the bottom surface of the upper cavity 3 will cooperate with the optocoupler package to cut the optocoupler pin, making it easy for the optocoupler pin to be cut off. However, by setting the clearance surface 5, a large shearing force can be avoided at the optocoupler pin on the outer wall of the optocoupler. At this time, the optocoupler pin may only be bent to a certain extent. Therefore, this solution can greatly reduce the probability of the optocoupler pin being cut off.

[0025] To prevent damage to the optocoupler caused by the contact between the top wall of the upper cavity 3 and the top surface of the optocoupler when the optocoupler tilts due to impurities and the upper pusher block 1 and lower pusher block 2 come together, a clearance space is provided between the top of the upper cavity 3 and the top surface of the optocoupler. This prevents the top wall of the upper cavity 3 from pressing on the optocoupler and causing damage. Experiments have shown that the height of the clearance space is not less than the thickness of the optocoupler bracket, which is generally 0.25mm. Under these conditions, there have been no cases of the top wall of the upper cavity 3 pressing on the optocoupler and causing damage.

[0026] To ensure that the optical coupler and the rest of the optical coupler support do not deform during the rib cutting process, the bottom surface of the lower cavity 4 is made to fit with the bottom surface of the optical coupler to support the optical coupler, thereby greatly reducing the deformation of the optical coupler support after one rib cutting.

[0027] To reduce the probability of the optocoupler being raised when there are impurities on the bottom surface of the lower cavity 4, a waste trough 6 is provided on the bottom surface of the lower cavity 4. This not only provides support for the optocoupler but also allows impurities to fall into the waste trough 6, thereby reducing the probability of the optocoupler being raised by impurities.

[0028] To avoid shearing forces between the corner of the lower cavity 4 and the optocoupler, a second clearance surface 7 with the same structure as the clearance surface 5 can be provided at the bottom of the lower cavity 4, and used to connect the side wall of the lower cavity 4 and the top surface of the lower feed block 2.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] 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 photocoupler de-adhesive cutting and material-pulling block, comprising an upper material-pulling block (1) and a lower material-pulling block (2) for clamping the photocoupler bracket after assembly, wherein the bottom surface of the upper material-pulling block (1) is provided with an upper cavity (3), and the top surface of the lower material-pulling block (2) is provided with a lower cavity (4), wherein the upper cavity (3) and the lower cavity (4) are used to accommodate the photocoupler after assembly, characterized in that, The bottom of the upper cavity (3) is provided with a clearance surface (5) that connects the side wall of the upper cavity (3) and the bottom surface of the upper feed block (1). The projection of the upper edge of the clearance surface (5) on the plane where the optical coupler bracket is located is located within the projection of the lower edge of the clearance surface (5) on the plane where the optical coupler bracket is located.

2. The optical coupling debonding tab of claim 1, wherein, An clearance space is provided between the top of the upper cavity (3) and the top surface of the optical coupler.

3. The optical coupling debonding tab of claim 2, wherein, The height of the clearance space is not less than the thickness of the optical coupler bracket.

4. The optical coupling debonding tab of claim 1, wherein, The bottom surface of the lower cavity (4) is attached to the bottom surface of the optocoupler.

5. The optical coupling debonding tab of claim 1, wherein, The avoidance surface (5) is either a rounded corner or a chamfered corner.

6. The optical coupling debonding tab of claim 1, wherein, A waste trough (6) is provided on the bottom surface of the lower cavity (4).

7. The optical coupling debonding tab of claim 1, wherein, The bottom of the lower cavity (4) is provided with a second clearance surface (7) that has the same structure as the clearance surface (5), and is used to connect the side wall of the lower cavity (4) with the top surface of the lower feed block (2).

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