Buckling type pressing jig

Abstract

The utility model discloses a buckling type pressing jig, and relates to the technical field of jigs. The device comprises an upper plate body, a plurality of sleeves are evenly distributed at the bottom of the upper plate body, ejector pins are arranged in the sleeves in a sliding fit mode, and the ejector pins are connected with the sleeves through first compression springs. According to the PCB lamp panel, the upper panel body and the lower panel body are matched with the spring pressure ejector pins in a buckle pressing mode, glue can be evenly attached to the surface of the PCB lamp panel and the surface of the glass panel, and therefore the problem that the thickness is not consistent after packaging is solved; compared with the prior art, the pressing device has the advantages that the problems of surface cavities, bubbles, layering and the like after packaging caused by insufficient pressure can be ingeniously solved, the potential safety hazard of injury to operators can be reduced, and the pressing device has practicability.

Description

Technical Field

[0001] The present application relates to the technical field of jigs, and in particular to a snap-fit ​​press-fit jig. Background Art

[0002] During the production process of LED liquid crystal display screens, the lamp surface needs to be packaged for a second time through a room temperature curing process or a high temperature curing process. The high temperature curing process has the advantages of not being easy to yellow, being resistant to high temperatures, and not being easy to deform at low temperatures, which facilitates the subsequent screen splicing processing.

[0003] When LED liquid crystal display screens are produced, most of them use glue to stick the PCB light board and the glass plate to complete the secondary packaging process. Due to the high viscosity of the glue, the flow between the PCB light board and the glass plate is relatively slow, and it is difficult to evenly fit the PCB light board. In the prior art, the PCB light board and the glass plate are placed between the upper and lower fixtures, and a counterweight plate is added on the top of the upper fixture to increase the pressure applied to the PCB light board and the glass plate, so that after the secondary packaging, it is not easy to have a series of problems such as inconsistent thickness, cavity, bubble, and delamination. However, when such a design separates the upper and lower fixtures from each other, the counterweight plate is prone to fall off, posing a safety hazard that may cause harm to the operator. In order to reasonably improve this problem, the present application proposes a snap-fit ​​pressing fixture. Utility Model Content

[0004] The purpose of the present application is to solve the problem in the prior art that a PCB light board and a glass plate are placed between upper and lower fixtures, and a counterweight plate is added on the top of the upper fixture to increase the pressure applied to the PCB light board and the glass plate, so that they are not prone to a series of problems such as inconsistent thickness, cavities, bubbles, and stratification after secondary packaging. However, such a design is prone to the counterweight plate falling off when the upper and lower fixtures are separated from each other, posing a safety hazard to the operator. The present application provides a snap-fit ​​pressing fixture.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] Snap-on press fixtures, including:

[0007] The upper plate body has a plurality of sleeves evenly distributed on the bottom, each sleeve is slidably fitted with an ejector pin, and the ejector pin is connected to the sleeve via a first compression spring;

[0008] The lower plate body has a storage plate on the top, a plurality of guide rods are vertically connected to the top of the lower plate body, and a plurality of through holes are formed on the upper plate body, and the guide rods slide through the through holes;

[0009] Four bases are symmetrically installed on the back sides of the upper plate body, and are hinged with limit plates. The limit plates are connected to the bases through torsion springs. The limit plates are provided with clamping blocks. The lower plate body is provided with clamping grooves. The clamping blocks are clamped and matched with the clamping grooves.

[0010] The adjusting component is arranged on the limiting plate and is used for adjusting the distance between the clamping block and the base.

[0011] Furthermore, the limiting plates on the same side are connected via a first connecting plate.

[0012] Furthermore, the adjustment assembly includes a movable plate, which is slidably matched with the limit plate, and the block is constructed at the end of the movable plate. The movable plate on the same side is connected through a second connecting plate. A rotating handle is rotatably installed on the second connecting plate, and a screw rod is coaxially connected to it, and the screw rod thread passes through the first connecting plate.

[0013] Furthermore, a second compression spring is sleeved on the circumference of the screw rod, and two ends of the second compression spring are respectively in contact with the opposite sides of the first connecting plate and the second connecting plate.

[0014] Furthermore, a fixing block is installed on the top of the lower plate body, and a slanted surface is constructed on the top of the fixing block. The lower end of the fixing block extends to the edge of the slot of the snap-in slot, and a curved surface is constructed on the snap-in block, which is movably overlapped with the slanted surface.

[0015] Furthermore, an annular plate is slidably mounted on the guide rod, and a third compression spring is sleeved on the circumference of the guide rod and connected to the annular plate, and the top of the annular plate is movably in contact with the upper plate body.

[0016] Furthermore, ends of some of the ejector pins are connected with columnar abutment blocks, and the columnar abutment blocks are distributed in a rectangular shape.

[0017] Furthermore, the sleeves are all connected with magnetic blocks, which are magnetically connected to the upper plate body.

[0018] The beneficial effects of this application are as follows:

[0019] The present application adopts a snap-fitting method between the upper plate and the lower plate in combination with a spring pressure ejector pin, so that the glue can be evenly bonded to the surface of the PCB light board and the glass plate, thereby improving the problem of inconsistent thickness after packaging. Subsequently, by adopting the design of an adjustment component, the spacing between the card block and the base can be adjusted to facilitate adjustment of the pressing force. Compared with the prior art, it can not only cleverly solve the problems of surface cavities, bubbles, and stratification after packaging caused by insufficient pressure, but also reduce the safety hazards that cause harm to operators, and is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of this application;

[0021] Figure 2 This application Figure 1 A magnified view; cross-sectional view

[0022] Figure 3 It is a schematic diagram of the bottom structure of the upper plate of this application;

[0023] Figure 4 This application Figure 3 The enlarged view of point B;

[0024] Figure 5 This application Figure 3 Enlarged view of point C;

[0025] Figure 6 It is a schematic diagram of the structure of the board under this application;

[0026] 1404, screw rod; 15, first connecting plate; 16, second compression spring; 17, fixed block; 18, inclined surface; 19, arc surface; 20, annular plate; 21, third compression spring; 22, cylindrical block; 23, magnetic block; 24, triangular fixing strip; 25, PCB light board; 26, glass plate. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] like Figure 1-Figure 6 As shown, a snap-fit ​​press-fit fixture proposed in one embodiment of the present application includes:

[0029] The upper plate body 1 has a plurality of sleeves 2 evenly distributed at the bottom thereof. The sleeves 2 are distributed in a square array, and their axes are perpendicular to the bottom surface of the upper plate body 1. The sleeves 2 are slidably fitted with ejector pins 3. The ejector pins 3 are connected to the sleeves 2 through first compression springs 4. The first compression springs 4 are used to provide a thrust forcing the ejector pins 3 to extend out of the sleeves 2.

[0030] The lower plate body 5 is provided with a storage plate 6 on the top thereof. The storage plate 6 is made of glass material, and its four corners are fixed to the lower plate body 5 by triangular fixing strips 24. The PCB light board 25 and the glass plate 26 adhered to each other by glue can be placed on the top of the storage plate 6, wherein the glass plate 26 is in contact with the top of the storage plate 6. A plurality of guide rods 7 are vertically connected to the top of the lower plate body 5. The number of the guide rods 7 is four and they are distributed in a rectangular shape around the storage plate 6. A plurality of through holes 8 are provided on the upper plate body 1. The guide rods 7 slide through the through holes 8. The guide rods 7 can guide the movement of the upper plate body 1 to ensure that the upper plate body 1 and the lower plate body 5 are accurately pressed together. When the upper plate body 1 slides parallel to the lower plate body 5 along the length direction of the guide rods 7, the ejector pin 3 at the bottom of the upper plate body 1 can contact the PCB light board 25. At this time, pressure can be applied to the PCB light board 25 by the first compression spring 4.

[0031] Four bases 9 are symmetrically installed on the back sides of the upper plate body 1 respectively. The four bases 9 are symmetrically distributed in pairs. They are installed on the upper plate body 1 through bolt assemblies, and are hinged with limit plates 10 on them. The limit plate 10 is connected to the base 9 through a torsion spring 11. One end of the torsion spring 11 is fixed to the base 9, and the other end is fixed to the hinged end of the limit plate 10. The movable end of the limit plate 10 extends in a direction away from the bottom of the upper plate body 1. Under the action of the torsion spring 11, the limit plate 10 can be perpendicular to the bottom of the upper plate body 1. A clamping block 12 is provided on the limit plate 10, and the clamping block 12 extends toward the direction of the upper plate body 1. A clamping groove 13 is provided on the lower plate body 5, and the clamping block 12 is connected to the clamping groove 13 one by one Correspondingly, the clamping block 12 is clamped and matched with the clamping groove 13. After the ejector pin 3 contacts the PCB light board 25, as the upper plate body 1 continues to move, the first compression spring 4 is compressed, and then the four limit plates 10 can be driven to rotate so that the movable end moves in the direction away from the upper plate body 1. At the same time, the torsion spring 11 is torsionally deformed, and then the clamping block 12 can pass through the clamping groove 13, and then the limit plate 10 can be loosened. The limit plate 10 can be reset under the action of the torsion spring 11. At this time, the limit plate 10 is in contact with the groove wall of the clamping groove 13, and the clamping block 12 contacts the edge of the bottom notch of the clamping groove 13, so that the upper plate body 1 and the lower plate body 5 are buckled with each other. Such a design can quickly turn around and put the product on and off the line;

[0032] The adjusting component 14 is arranged on the limiting plate 10 and is used to adjust the distance between the clamping block 12 and the base 9. The distance between the clamping block 12 and the base 9 is proportional to the distance between the upper plate body 1 and the lower plate body 5 after they are buckled together, so that the pressing force can be adjusted to achieve products of different heights;

[0033] The present application adopts the snap-fitting method of the upper plate body 1 and the lower plate body 5 in combination with the spring pressure ejector pin 3, so that the glue can be evenly bonded to the surface of the PCB light board 25 and the surface of the glass plate 26, thereby improving the problem of inconsistent thickness after packaging. Subsequently, by adopting the design of the adjustment component 14, the spacing between the card block 12 and the base 9 can be adjusted to facilitate the adjustment of the pressing force. Compared with the prior art, it can not only cleverly solve the problems of surface cavities, bubbles, and stratification after packaging caused by insufficient pressure, but also reduce the safety hazards that cause harm to operators, and is practical.

[0034] like Figure 1-Figure 3 As shown, in some embodiments, the limiting plates 10 on the same side are connected by a first connecting plate 15. The first connecting plate 15 is located on the side of the limiting plate 10 on the same side away from the upper plate body 1, and there is a distance between it and the upper plate body 1. This design connects the two limiting plates 10 on the same side to each other so that the two can move synchronously, which is convenient for driving multiple limiting plates 10 to move during operation.

[0035] like Figure 1-Figure 4 As shown, in some embodiments, the adjustment component 14 includes a movable plate 1401, which is slidably matched with the limit plate 10, and the block 12 is constructed at the end of the movable plate 1401. When the movable plate 1401 slides, the distance between the block 12 and the base 9 can be adjusted. The movable plate 1401 on the same side is connected by a second connecting plate 1402, which is on the same side as the second connecting plate 1402. A rotating handle 1403 is rotatably installed on the second connecting plate 1402. The rotating handle 1403 is located in the middle of the second connecting plate 1402, and a screw rod 1404 is coaxially connected thereto. The screw rod 1404 threadedly passes through the first connecting plate 15. By rotating the rotating handle 1403, the second connecting plate 1402 can be driven under the action of the screw rod 1404 to drive the two movable plates 1401 on the same side to slide synchronously, so as to adjust the distance between the block 12 and the base 9.

[0036] like Figure 1 and Figure 3 As shown, in some embodiments, a second compression spring 16 is provided around the screw rod 1404, and its two ends respectively contact the opposite sides of the first connecting plate 15 and the second connecting plate 1402. The second compression spring 16 is used to provide a thrust forcing the second connecting plate 1402 to move away from the first connecting plate 15. Under the action of this thrust, the screw rod 1404 and the first connecting plate 15 are not prone to loosening, thereby improving the stability of the device.

[0037] like Figure 1 and Figure 6 As shown, in some embodiments, a fixing block 17 is installed on the top of the lower plate body 5, and the fixing block 17 is fixed to the lower plate body 5 by a bolt assembly, and an inclined surface 18 is constructed on the top thereof, as shown in FIG. Figure 6As shown, its end located at a lower position extends to the edge of the slot of the snap-in groove 13, and its end located at a higher position is away from the snap-in groove 13. The block 12 is constructed with an arcuate surface 19, which is movably overlapped with the inclined surface 18. During the movement of the upper plate body 1, the arcuate surface 19 on the block 12 can contact the inclined surface 18 and slide along its length direction to force the movable end of the limit plate 10 to move in the direction away from the upper plate body 1. After the arcuate surface 19 is separated from the inclined surface 18, the block 12 can enter the snap-in groove 13 and contact the edge of the slot at its bottom through the snap-in groove 13. This design makes it more convenient for the block 12 to snap into and engage with the snap-in groove 13.

[0038] like Figure 1 and Figure 6 As shown, in some embodiments, an annular plate 20 is slidably mounted on the guide rod 7, and a third compression spring 21 is sleeved around the guide rod 7 and connected to the annular plate 20. The third compression spring 21 is used to provide a thrust forcing the annular plate 20 to move away from the lower plate body 5. The top of the annular plate 20 is movably in contact with the upper plate body 1, and the bottom of the upper plate body 1 can be in contact with the annular plate 20, and the third compression spring 21 is compressed during the movement of the upper plate body 1, thereby providing a certain buffering effect on the movement of the upper plate body 1, so as to reduce the impact force generated by it on the PCB light board 25 and prevent it from being damaged.

[0039] like Figure 1-Figure 3 As shown, in some embodiments, the ends of some ejector pins 3 are connected with columnar blocks 22, which are rubber blocks with toughness. There are four columnar blocks 22, and the columnar blocks 22 are distributed in a rectangular shape. The columnar blocks 22 can increase the contact area between the ejector pin 3 and the PCB light board 25, thereby improving its resistance effect on the PCB light board 25.

[0040] like Figure 3 and Figure 4 As shown, in some embodiments, a magnetic block 23 is connected to the sleeve 2. The magnetic block 23 is a strong magnet, which is magnetically connected to the upper plate body 1. The upper plate body 1 is an iron plate. Since the movement of the upper plate body 1 is vertical, the ejector pin 3 is not easy to shift when it collides with the PCB light board 25. This design makes it easier to fix the sleeve 2 and also facilitates adjusting the position of the sleeve 2.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A snap-fit ​​press-fit fixture, characterized in that: include: An upper plate body (1) has a plurality of sleeves (2) evenly distributed on its bottom, each sleeve (2) is slidably fitted with an ejector pin (3), and the ejector pin (3) is connected to the sleeve (2) via a first compression spring (4); A lower plate body (5) is provided with a storage plate (6) on the top thereof, a plurality of guide rods (7) are vertically connected to the top of the lower plate body (5), a plurality of through holes (8) are provided on the upper plate body (1), and the guide rods (7) slide through the through holes (8); Four bases (9) are symmetrically mounted on opposite sides of the upper plate body (1), and are hingedly connected to limit plates (10). The limit plates (10) are connected to the bases (9) via torsion springs (11). A clamping block (12) is provided on the limit plates (10). A clamping groove (13) is provided on the lower plate body (5). The clamping block (12) is clamped and matched with the clamping groove (13). An adjustment component (14) is arranged on the limiting plate (10) and is used to adjust the distance between the clamping block (12) and the base (9).

2. The snap-fit ​​press-fit fixture according to claim 1, characterized in that: The limiting plates (10) on the same side are connected via a first connecting plate (15).

3. The snap-fit ​​press-fit fixture according to claim 2, characterized in that: The adjustment assembly (14) comprises a movable plate (1401) which is slidably matched with the limit plate (10); the clamping block (12) is constructed at the end of the movable plate (1401); the movable plates (1401) on the same side are connected via a second connecting plate (1402); a rotating handle (1403) is rotatably mounted on the second connecting plate (1402) and a screw rod (1404) is coaxially connected thereto; the screw rod (1404) is threadedly passed through the first connecting plate (15).

4. The snap-fit ​​press-fit fixture according to claim 3, characterized in that: A second compression spring (16) is sleeved around the screw rod (1404), and two ends thereof are in contact with the opposite sides of the first connecting plate (15) and the second connecting plate (1402), respectively.

5. The snap-fit ​​press-fit fixture according to claim 3, characterized in that: A fixing block (17) is installed on the top of the lower plate body (5), and an inclined surface (18) is constructed on the top of the fixing block. The lower end of the fixing block (17) extends to the edge of the slot of the clamping slot (13). The clamping block (12) is constructed with an arcuate surface (19) which is movably overlapped with the inclined surface (18).

6. The snap-fit ​​press-fit fixture according to claim 1, characterized in that: An annular plate (20) is slidably mounted on the guide rod (7), and a third compression spring (21) is sleeved around the guide rod (7) and connected to the annular plate (20). The top of the annular plate (20) is in movably contact with the upper plate body (1).

7. The snap-fit ​​press-fit fixture according to claim 1, characterized in that: The ends of some of the ejector pins (3) are connected to columnar stop blocks (22), and the columnar stop blocks (22) are distributed in a rectangular shape.

8. The snap-fit ​​press-fit fixture according to claim 1, characterized in that: The sleeves (2) are each connected to a magnetic attraction block (23), which is magnetically connected to the upper plate body (1).

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