Spring needle pressing mechanism

Abstract

The utility model discloses a spring needle pressing mechanism which comprises a carrier plate and a support, the carrier plate is hinged to the support, a small spring and a large spring are installed on the carrier plate, the large spring is fixedly installed on the face, opposite to the support, of the carrier plate, the small spring penetrates through the carrier plate in a sliding mode, the small spring is connected with a hook, the carrier plate rotates to be closed with the support, the large spring is compressed, and the small spring is reset. The carrier plate rotates to be opened from the support, the large spring resets, and the small spring is pulled to deform. According to the utility model, only two springs are used, the structure is simple, the manufacturing cost of equipment is greatly reduced, the operation is stable, the springs are naturally pressed and the pressing needles are opened during overturning by virtue of the self weight of the carrier plate and the carrier plate support frame, and the spring pressing needles are made of silicon-manganese alloy steel materials, so that the fatigue resistance is very high, and the stability is very good.

Description

Technical Field

[0001] This utility model relates to the field of needle pressing mechanism technology, specifically a spring needle pressing mechanism. Background Technology

[0002] The carrier plate serves as the substrate for silicon wafers in the coating process, and the pressure pin is an indispensable component on the carrier plate. It is used to fix the silicon wafers on the carrier plate. When the carrier plate moves to the wafer pick-up and drop-off position, the pressure pin opens, the gripper completes the wafer pick-up and drop-off action, the pressure pin closes, and the carrier plate moves to other stations to complete a coating process.

[0003] There are currently two types of pressure pins: magnetic and mechanical. Magnetic pressure pins have magnets built into them. When the carrier plate reaches the loading / unloading station, the pressure pin opens using the principle of like poles repelling, thanks to the magnets on the opening / closing plate. Magnetic pressure pins have a complex structure, requiring magnets to be installed on the pin itself, a pressure pin shaft, and numerous magnets to be arranged on the opening / closing plate. This makes them expensive, and the direction of the magnet poles, the distance between the magnets, and the weakening of the magnetic force at high temperatures can all cause instability in the operation of magnetic pressure pins.

[0004] Mechanical pressure pins are used when the carrier plate reaches the wafer pick-and-place station. The pressure pins are opened directly by pushing or rotating them using an auxiliary mechanism on the opening and closing plate. Mechanical pressure pins also have the problem of complex structure. Although they are cheaper than magnetic pressure pins, mechanical ones have poor stability. If the top shaft is not in a vertical position at the moment of contact with the opening and closing plate, it will jam, causing wafer pick-and-place failure.

[0005] Therefore, we propose a spring-loaded needle mechanism to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a spring-pressing needle mechanism to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a spring-pressing needle mechanism, comprising: a carrier plate and a bracket, the carrier plate and the bracket being hinged together, a small spring and a large spring being mounted on the carrier plate, the large spring being fixedly mounted on the side of the carrier plate opposite to the bracket, the small spring slidingly penetrating the carrier plate, and the small spring being connected by a hook.

[0008] When the carrier plate rotates and the support closes, the large spring is compressed and the small spring returns to its original position.

[0009] When the carrier plate rotates and the support opens, the large spring returns to its original position, and the small spring is pulled and deformed.

[0010] Preferably, the torque of the small spring is less than the elastic force of the large spring.

[0011] Preferably, the small spring includes a connecting rod portion and a pressure needle portion, with the connecting rod portion connected to the pressure needle portion.

[0012] Preferably, a straight plug is integrally provided at the end of the large spring, and the straight plug is inserted into the carrier plate.

[0013] Preferably, the other end of the large spring is bent inward to form a ring hook, and the connecting rod of the small spring is hooked to the ring hook.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Using only two springs, the simple structure significantly reduces the cost of the equipment and ensures stable operation. The weight of the carrier plate and its support frame naturally compresses the springs during rotation, opening the pressure pin. The spring pressure pin is made of silicon-manganese alloy steel, which has very high fatigue resistance and excellent stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the closed structure of the carrier plate and the bracket in this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the small spring in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the large spring in this utility model.

[0020] In the diagram: 1. Small spring; 11. Connecting rod; 12. Pressing pin; 2. Large spring; 21. Straight plug; 22. Ring hook; 3. Carrier plate; 4. Support. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a spring-pressing needle mechanism, including: a carrier plate 3 and a bracket 4, the carrier plate 3 and the bracket 4 are hinged, a small spring 1 and a large spring 2 are installed on the carrier plate 3, the large spring 2 is fixedly installed on the side of the carrier plate 3 opposite to the bracket 4, the small spring 1 slides through the carrier plate 3, and the small spring 1 is connected by a hook.

[0023] The torque of the small spring 1 is less than the elastic force of the large spring 2.

[0024] The small spring 1 includes a connecting rod portion 11 and a pressing needle portion 12, with the connecting rod portion 11 connected to the pressing needle portion 12.

[0025] A straight plug 21 is integrally provided at the end of the large spring 2. The straight plug 21 is inserted into the carrier plate 3 to fix the large spring 2 to the carrier plate 3.

[0026] The other end of the large spring 2 is bent inward to form a ring hook 22, and the connecting rod part 11 of the small spring 1 is hooked to the ring hook 22.

[0027] Working principle: When the carrier plate 3 and the bracket 4 are not closed, the large spring 2 is not subjected to any force. Its own elastic tension pulls the small spring 1 inward, and the pressure needle part 12 of the small spring 1 is stretched and rotated, becoming parallel to the carrier plate 3, thus achieving the closing effect.

[0028] When the plate is picked up and placed at the work station, the carrier plate 3 flips to a horizontal position, the large spring 2 presses against the bracket 4, and the large spring 2 is compressed by the weight of the carrier plate 3. The small spring 1 loses the tension of the large spring 2, and under the action of torque, the pressure needle part 12 of the small spring 1 deforms and rotates, thus achieving the opening effect.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[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 spring-loaded needle mechanism, comprising: The carrier plate (3) and the bracket (4) are hinged together. The carrier plate (3) and the bracket (4) are characterized in that: a small spring (1) and a large spring (2) are installed on the carrier plate (3). The large spring (2) is fixedly installed on the side opposite to the carrier plate (3) and the bracket (4). The small spring (1) slides through the carrier plate (3) and is connected by a hook. The carrier plate (3) rotates and closes with the bracket (4), the large spring (2) is compressed and the small spring (1) is reset; The carrier plate (3) rotates and the bracket (4) opens, the large spring (2) returns to its original position, and the small spring (1) is pulled and deformed.

2. The spring-pressing needle mechanism according to claim 1, characterized in that, The torque of the small spring (1) is less than the elastic force of the large spring (2).

3. The spring-pressing needle mechanism according to claim 1, characterized in that, The small spring (1) includes a connecting rod portion (11) and a pressure needle portion (12), with the connecting rod portion (11) connected to the pressure needle portion (12).

4. The spring-pressing needle mechanism according to claim 1, characterized in that, The end of the large spring (2) is integrally provided with a straight plug (21), which is inserted into the carrier plate (3).

5. The spring-pressing needle mechanism according to claim 1, characterized in that, The other end of the large spring (2) is bent inward to form a ring hook (22), and the connecting rod part (11) of the small spring (1) is hooked to the ring hook (22).

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