Screen cap jig for plastic ring positioning

Abstract

The utility model discloses a sieve cap jig for plastic ring positioning, which belongs to the technical field of semiconductor plastic ring positioning and comprises an upper cover plate, one side of the upper cover plate is fixedly connected with a holding portion, a linkage assembly is mounted on the holding portion, a sliding groove is formed in the upper cover plate, a linkage plate is mounted in the sliding groove, and the linkage plate is mounted on the linkage assembly. By means of the linkage assembly and the linkage plate, the movement mode of the jig mechanism in the using process is changed, so that the precision problem in the plastic ring screening and positioning process is solved, and compared with a traditional mode that a plastic plate is used for positioning, the plastic ring screening and positioning device has the advantages of being simple in structure, convenient to use and high in practicability. The plastic ring screening device is simple and convenient to operate, guarantees no deviation during plastic ring screening, effectively avoids the situation that normal operation is affected due to deviation, is overall firm and durable, is not prone to damage, effectively saves use cost, is accurate in positioning, reduces manual adjustment times, and can greatly improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor plastic ring positioning technology, specifically a sieve cap fixture for positioning plastic rings. Background Technology

[0002] For press-fit diodes, since sufficient epoxy resin encapsulation is required, and the product socket does not have a sufficiently high support structure to wrap the epoxy, a plastic ring is needed as a support structure. If the plastic ring is placed manually before press-fitting, it will waste a lot of time and affect production efficiency. Currently, two similar plastic plates that can cooperate with the tray fixture are generally used to screen and position the plastic ring. The positioning holes of the plastic rings on the two plates are staggered to block the plastic ring from falling. Then, the positioning holes are rubbed to make them coincide, and the plastic ring can fall onto the product.

[0003] However, when the positioning holes of the two plastic rings are staggered to block the falling plastic rings, it is not possible to retain a sufficient number of plastic rings due to operational reasons. In addition, employees need to wear gloves to operate during the production process, and the action of rubbing the plastic plates may be difficult due to material issues, resulting in poor operability. Furthermore, since the two plastic plates have no limit to their movement, the plastic rings may not be able to fall. Moreover, since it is not a dedicated fixture, there are errors in positioning accuracy, which prevents the plastic rings from falling accurately to the predetermined position and requires manual adjustment. Therefore, a screen cap fixture for positioning plastic rings is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide a screen cap fixture for positioning plastic rings, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a screen cap fixture for positioning plastic rings, comprising an upper cover plate, a gripping part fixedly connected to one side of the upper cover plate, a linkage component installed on the gripping part, a sliding groove opened in the upper cover plate, a linkage plate installed in the sliding groove, a support plate provided below the linkage plate, and the upper cover plate and the linkage plate forming a fixture mechanism through the linkage component;

[0006] The linkage plate has multiple sliding grooves, and the support plate is fixedly connected with multiple positioning posts, which pass through the sliding grooves and the upper cover plate in sequence.

[0007] As a further preferred embodiment of this technical solution: the gripping part includes at least three fixed rods, and each fixed rod is provided with a receiving groove and a running groove. The receiving groove supports the pressing plate to ensure its operational feasibility, while the running groove facilitates the installation of the spring and the connecting rod.

[0008] One of the fixed rods has two sliding holes symmetrically opened on both sides of the running groove, so as to ensure the sliding feasibility of the linkage plate when the spring is compressed.

[0009] As a further preferred embodiment of this technical solution: the linkage component includes a pressing plate, the pressing plate is arranged in a "Z" shape, the pressing plate is installed on the gripping part by a pin, and the linkage plate is driven to run by the components connected to it under the action of external force.

[0010] The bent part of the pressing plate is located inside the receiving groove.

[0011] As a further preferred embodiment of this technical solution: the linkage component further includes two connecting plates, which are connected to one end of the pressing plate by pins. The connecting plates drive the linkage plate through sliding holes when the pressing plate is running.

[0012] As a further preferred embodiment of this technical solution: the linkage assembly further includes a spring, which is installed in the running groove. A connecting rod is fixedly connected to one side of the linkage plate, and one end of the spring is fixedly connected to the connecting rod. The spring and the connecting rod are used for the connection between the gripping part and the linkage plate, and to ensure the stable operation of the linkage plate when the linkage assembly is running.

[0013] As a further preferred embodiment of this technical solution: a pin passes through the connecting rod, and the pin passes through two sliding holes and two connecting plates in sequence. The above arrangement ensures the feasibility of the linkage plate.

[0014] As a further preferred embodiment of this technical solution: both the upper cover plate and the tray plate are provided with through holes arranged at equal intervals. The diameter of the through holes in the tray plate is larger than that in the upper cover plate. The through holes in the upper cover plate are used to screen plastic rings that meet the specifications, while the through holes in the tray plate are used to receive plastic rings that fall after screening.

[0015] The linkage plate has equally spaced waist-shaped holes that are adapted to the through holes of the upper cover plate. The waist-shaped holes act as a barrier, preventing the plastic rings from falling off when the upper cover plate is screening them. After screening, the linkage component moves the screened plastic rings to the tray in a unified manner.

[0016] As a further preferred embodiment of this technical solution: a plastic ring is installed inside the through hole of the upper cover plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention solves the accuracy problem of plastic ring screening and positioning by changing the movement mode of the fixture mechanism through linkage components and linkage plates. Compared with the traditional method of using plastic plates for positioning, it is easier to operate and ensures no deviation when screening plastic rings, effectively avoiding the situation that affects normal operation due to deviation. The device is sturdy and durable, not easy to break, effectively saves the cost of use, and has accurate positioning, reducing the number of manual adjustments, thereby greatly improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the first structure of a screen cap fixture for positioning plastic rings according to the present invention;

[0020] Figure 2 This is a schematic diagram of the second structure of a screen cap fixture for positioning plastic rings according to the present invention;

[0021] Figure 3 This is a partially exploded structural diagram of a screen cap fixture for positioning plastic rings according to this utility model.

[0022] Figure 4 This utility model relates to a screen cap fixture for positioning plastic rings. Figure 3 Enlarged structural diagram of section A in the middle;

[0023] Figure 5 This is a side view of a screen cap fixture for positioning plastic rings according to the present invention.

[0024] In the diagram: 1. Top cover plate; 11. Grip part; 111. Receiving groove; 112. Running groove; 113. Sliding hole; 12. Sliding groove; 2. Linkage assembly; 21. Pressing plate; 22. Connecting plate; 23. Spring; 3. Linkage plate; 31. Sliding groove; 32. Connecting rod; 4. Support plate; 41. Positioning post; 5. Plastic ring. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0026] Example 1

[0027] Please see Figures 1-5 This utility model provides a technical solution: a screen cap fixture for positioning plastic rings, including an upper cover plate 1, a gripping part 11 integrally formed on one side of the upper cover plate 1, a linkage component 2 installed on the gripping part 11, a sliding groove 12 opened in the upper cover plate 1, a linkage plate 3 installed in the sliding groove 12, and a support plate 4 provided below the linkage plate 3. The upper cover plate 1 and the linkage plate 3 together form a fixture mechanism through the linkage component 2 and the linkage plate 3.

[0028] The linkage plate 3 has multiple sliding grooves 31, and the support plate 4 has multiple positioning posts 41 welded on it. The positioning posts 41 pass through the sliding grooves 31 and the upper cover plate 1 in sequence. The sliding grooves 31 ensure that the linkage plate 3 is not affected by the upper cover plate 1 and the support plate 4 or does not affect the upper cover plate 1 and the support plate 4 when it is running.

[0029] In this embodiment, specifically: the gripping part 11 includes at least three fixed rods, and each fixed rod is provided with a receiving groove 111 and a running groove 112. The receiving groove 111 is used to receive the pressing plate 21 to ensure its operational feasibility, while the running groove 112 is used to facilitate the installation of the spring 23 and the connecting rod 32.

[0030] Two sliding holes 113 are symmetrically opened on one of the fixed rods on both sides of the running groove 112. The sliding holes 113 are used to ensure the sliding feasibility of the linkage plate 3 when the spring 23 is compressed.

[0031] In this embodiment, specifically: the linkage component 2 includes a pressing plate 21, which is arranged in a "Z" shape. The pressing plate 21 is installed on the grip part 11 through a pin. Under the action of external force, the pressing plate 21 drives the linkage plate 3 to run through the components connected to it.

[0032] The bending point of the pressing plate 21 is located within the receiving groove 111.

[0033] In this embodiment, specifically: the linkage component 2 also includes two connecting plates 22, which are connected to one end of the pressing plate 21 by pins. When the pressing plate 21 is running, the connecting plates 22 drive the linkage plate 3 through the sliding holes 113.

[0034] In this embodiment, specifically: the linkage component 2 also includes a spring 23, which is installed in the running groove 112. A connecting rod 32 is integrally formed on one side of the linkage plate 3. One end of the spring 23 is welded to the connecting rod 32. The spring 23 and the connecting rod 32 are used to connect the gripping part 11 and the linkage plate 3, and to ensure the stable operation of the linkage plate 3 when the linkage component 2 is running.

[0035] In this embodiment, specifically: a pin passes through the connecting rod 32, and the pin passes through two sliding holes 113 and two connecting plates 22 in sequence. The above arrangement ensures the feasibility of the linkage plate 3.

[0036] Example 2

[0037] A screen cap fixture for positioning plastic rings has through holes arranged at equal intervals on both the upper cover plate 1 and the support plate 4. The diameter of the through holes on the support plate 4 is larger than that of the through holes on the upper cover plate 1. The through holes on the upper cover plate 1 are used to screen plastic rings 5 ​​that meet the specifications, while the through holes on the support plate 4 are used to receive plastic rings 5 ​​that fall through the through holes on the upper cover plate 1 after screening. The through holes on the support plate 4 are set to be larger to facilitate the receiving of the fallen plastic rings 5.

[0038] The linkage plate 3 has equally spaced waist-shaped holes that are adapted to the through holes of the upper cover plate 1. The waist-shaped holes serve two purposes: firstly, they act as a barrier, preventing the plastic rings 5 ​​from falling directly when the upper cover plate 1 is screening them; secondly, after screening, the linkage component 2 transfers the screened plastic rings 5 ​​to the tray plate 4 in a unified manner.

[0039] In this embodiment, specifically: a plastic ring 5 is installed inside the through hole of the upper cover plate 1.

[0040] Working principle: In use, the gripper 11 holds the fixture mechanism and places a large number of plastic rings 5 ​​onto the upper cover plate 1. Plastic rings 5 ​​that meet the size specifications will remain in the through holes opened in the upper cover plate 1. At this time, the plastic rings 5 ​​are blocked from falling by the gap between the waist-shaped holes of the linkage plate 3. Then, the fixture mechanism is placed on the support plate 4, and the two are installed and fixed by the positioning pins 41 on the support plate 4. Finally, the pressing plate 21 is pressed by external force. The pressing plate 21 moves and drives the connecting plate 22 connected to it. At this time, the connecting plate 22 drives the linkage plate 3 through the sliding hole 113, thereby compressing the spring 23 and making the linkage plate 3 run horizontally in the slide groove 12, thereby removing the obstruction to the through holes of the upper cover plate 1, so that the plastic rings 5 ​​that meet the specifications after screening fall and fit onto the support plate 4.

[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 screen cap fixture for positioning plastic rings, comprising an upper cover plate (1), characterized in that: A gripping part (11) is fixedly connected to one side of the upper cover plate (1), and a linkage component (2) is installed on the gripping part (11). A sliding groove (12) is opened in the upper cover plate (1), and a linkage plate (3) is installed in the sliding groove (12). A support plate (4) is provided below the linkage plate (3). The upper cover plate (1) and the linkage plate (3) together form a fixture mechanism through the linkage component (2). The linkage plate (3) is provided with multiple sliding grooves (31), and the support plate (4) is fixedly connected with multiple positioning posts (41). The positioning posts (41) pass through the sliding grooves (31) and the upper cover plate (1) in sequence.

2. The screen cap fixture for positioning plastic rings according to claim 1, characterized in that: The gripping part (11) includes at least three fixing rods, and each fixing rod is provided with a receiving groove (111) and a running groove (112); Two sliding holes (113) are symmetrically provided on one of the fixed rods on both sides of the running groove (112).

3. A screen cap fixture for positioning plastic rings according to claim 2, characterized in that: The linkage component (2) includes a pressing plate (21), which is arranged in a "Z" shape and is mounted on the grip (11) by a pin. The bent part of the pressing plate (21) is located in the receiving groove (111).

4. A screen cap fixture for positioning plastic rings according to claim 3, characterized in that: The linkage component (2) also includes two connecting plates (22), which are connected to one end of the pressing plate (21) by pins.

5. A screen cap fixture for positioning plastic rings according to claim 4, characterized in that: The linkage component (2) also includes a spring (23), which is installed in the running groove (112). A connecting rod (32) is fixedly connected to one side of the linkage plate (3), and one end of the spring (23) is fixedly connected to the connecting rod (32).

6. A screen cap fixture for positioning plastic rings according to claim 5, characterized in that: A pin passes through the connecting rod (32), and the pin passes through two sliding holes (113) and two connecting plates (22) in sequence.

7. A screen cap fixture for positioning plastic rings according to claim 1, characterized in that: Both the upper cover plate (1) and the support plate (4) are provided with through holes arranged at equal intervals, and the diameter of the through holes in the support plate (4) is larger than that in the upper cover plate (1). The linkage plate (3) has equidistantly arranged waist-shaped holes, which are adapted to the through holes of the upper cover plate (1).

8. A screen cap fixture for positioning plastic rings according to claim 7, characterized in that: A plastic ring (5) is installed in the through hole of the upper cover plate (1).

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