Laminated steel plate pressing device for printed circuit

Abstract

The utility model relates to the technical field of printed circuit board pressing, and particularly discloses a laminated steel plate pressing device for a printed circuit, which is characterized in that a pressure sensor is connected to the input end of a PLC (Programmable Logic Controller), the output end of the PLC is connected to a relay, the relay is connected with an electric push cylinder, and a threaded rod can be rotated according to the thickness of a circuit board during use; the threaded rod is in threaded connection with the fixing plate, so that the pressure sensor can slide up and down in the fixing plate by rotating the threaded rod, the upper surface of the pressure sensor is adjusted to be horizontal with the upper surface of the circuit board, and when the electric push cylinder is pressed downwards, the pressure sensor can detect pressure change; when the pressure reaches a set value, a signal is sent to the PLC, the PLC controls the electric push cylinder to stop pressing downwards, after pressing is completed, the electric push cylinder pulls the top pressing plate to reset upwards, the pressure change is detected through the pressure sensor, accurate control over the pressure of the electric push cylinder is completed, and the effect of reducing the defective rate is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit board pressing, in particular to a laminated steel plate pressing device for printed circuits. Background Art

[0002] PCB Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, the support of electronic components, and the carrier of electrical connection of electronic components. Because it is made by electronic printing, it is called "printed" circuit board.

[0003] Existing Chinese patent: A printed circuit board pressing device, patent number: CN208462171 U, includes a second cylinder, a first slider, a second slider, a first cylinder, a steel plate and a first heating plate. The second cylinder is used to drive the piston rod to extend, thereby pushing the frame to move upward to above the steel plate and making the bottom of the second limit plate flush with the top of the steel plate. The position of the circuit board to be pressed is calculated according to its size, and the first slider and the second slider are further pushed to move, thereby moving the first limit plate and the second limit plate to the specified position, thereby realizing the marking of the position of the circuit board to be pressed on the top of the steel plate, and the operation is simple. The circuit board is further placed on the top of the steel plate and the two sides of the circuit board are respectively in contact with the first limit plate and the second limit plate, thereby realizing the limitation of the position of the circuit board on the top of the steel plate, and the operation is simple. There is no need to manually adjust the position of the circuit board, which saves a lot of time.

[0004] However, during the implementation of the above technical solution, it was found that there are at least the following technical problems: the above-mentioned pressing device lacks a pressure detection device. If the pressure is too high, it will increase the force between the circuit board and the laminated steel plate, causing damage to the circuit board. If the pressure is too low, the circuit board and the laminated steel plate cannot be completely pressed together, which will increase the defective rate of the product. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a laminated steel plate pressing device for printed circuits, which solves the technical problem that the above-mentioned pressing device lacks a pressure detection device, if the pressure is too high, the circuit board will be damaged, if the pressure is too low, the circuit board cannot be completely pressed, and the defective rate of the product will increase.

[0007] (II) Technical solution

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A laminated steel plate pressing device for printed circuits comprises a fixed frame, a fixed plate is slidably installed inside the fixed frame, two rotating rods are symmetrically rotatably installed on both sides of the fixed plate, a top rod is slidably installed on the bottom end of the fixed plate, and two adjustment plates are symmetrically slidably installed on both sides of the fixed plate; the ends of the top rods are rotatably connected to the two rotating rods respectively, two springs are fixedly installed on the side ends of the two adjustment plates, a pressure sensor is slidably installed on the side end of the fixed plate, a threaded rod is rotatably installed on the bottom end of the pressure sensor, a top pressure plate is slidably installed inside the fixed frame, a second heating plate is fixedly installed inside the top pressure plate, and a first heating plate is fixedly installed inside the fixed plate.

[0010] Preferably: an electric push cylinder is fixedly mounted on the top of the top pressure plate.

[0011] Preferably: a limiting groove is provided inside the fixing frame.

[0012] (III) Beneficial effects

[0013] 1. Connect the pressure sensor to the input end of the PLC controller, and then connect the output end of the PLC to the relay, which is connected to the electric push cylinder. When in use, the threaded rod can be rotated according to the thickness of the circuit board. Since the threaded rod is connected to the fixed plate by threads, rotating the threaded rod can make the pressure sensor slide up and down inside the fixed plate, and adjust the upper surface of the pressure sensor to be level with the upper surface of the circuit board. When the electric push cylinder is pressed down, the pressure sensor will detect the change in pressure. When the pressure reaches the set value, it will send a signal to the PLC controller, and the PLC will control the electric push cylinder to stop pressing down. When the pressing is completed, the electric push cylinder will pull the top pressure plate to reset upward. The pressure change is detected by the pressure sensor to accurately control the pressure of the electric push cylinder, thereby reducing the defective rate.

[0014] 2. When the pressing is completed, pull the fixing plate to pull out the circuit board, and push the ejector rod inward. The ejector rod lifts the two rotating rods by rotation, so that the circuit board with higher temperature can be separated from the surface of the first heating plate. After the circuit board is taken out, a new circuit board can be placed. After placement, push the fixing plate into the fixing frame. The adjusting plates at both ends of the fixing plate will be constrained by the limit grooves, overcome the elastic force of the spring and aggregate inward. During the aggregation process, the circuit board above the first heating plate will be adjusted for pressing. The position of the circuit board can be quickly adjusted through the adjusting plate and the ejector rod, thereby achieving the effect of improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1This is a structural diagram of the fixing frame of the utility model;

[0017] Figure 2 This is a structural diagram of a fixed plate of the utility model;

[0018] Figure 3 For this utility model Figure 2 A magnified structural diagram;

[0019] Figure 4 This is a structural diagram of a threaded rod of the utility model;

[0020] Figure 5 This is a structural diagram of the limit groove of the utility model.

[0021] Legend: 1. Fixed frame; 2. Fixed plate; 3. Pressing plate; 4. First heating plate; 5. Second heating plate; 6. Adjusting plate; 7. Rotating rod; 8. Push rod; 9. Pressure sensor; 11. Electric push cylinder; 12. Spring; 13. Threaded rod; 14. Limiting groove. DETAILED DESCRIPTION

[0022] The embodiment of the present application provides a laminated steel plate pressing device for printed circuits, which effectively solves the technical problem that the above-mentioned pressing device lacks a pressure detection device. If the pressure is too large, the circuit board will be damaged. If the pressure is too small, the circuit board cannot be completely pressed, which will increase the defective rate of the product. The pressure sensor is connected to the input end of the PLC controller, and the output end of the PLC is connected to the relay. The relay is connected to the electric push cylinder. When in use, the threaded rod can be rotated according to the thickness of the circuit board. Since the threaded rod is connected to the fixed plate by a thread, rotating the threaded rod can make the pressure sensor slide up and down inside the fixed plate, and adjust the upper surface of the pressure sensor to be level with the upper surface of the circuit board. When the electric push cylinder is pressed down, the pressure sensor will detect the change in pressure. When the pressure reaches the set value, it will send a signal to the PLC controller. The PLC then controls the electric push cylinder to stop pressing down. When the pressing is completed, the electric push cylinder will pull the top pressure plate to reset upward. The pressure sensor detects the change in pressure to accurately control the pressure of the electric push cylinder, thereby reducing the defective rate. When the pressing is completed, the fixed plate is pulled out to pull the circuit board out, and the push rod is pushed inward. The push rod lifts the two rotating rods by rotating, so that the circuit board with a higher temperature can be separated from the surface of the first heating plate. After the circuit board is taken out, a new circuit board can be placed. After placement, the fixed plate is pushed into the fixed frame. The adjustment plates at both ends of the fixed plate will be constrained by the limit grooves, overcome the elastic force of the spring and aggregate inward. During the aggregation process, the circuit board above the first heating plate will be adjusted for pressing. The position of the circuit board can be quickly adjusted through the adjustment plate and the push rod, thereby improving production efficiency.

[0023] Example

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the above-mentioned pressing device lacks a pressure detection device. If the pressure is too high, the circuit board will be damaged. If the pressure is too low, the circuit board cannot be completely pressed, which will increase the defective rate of the product. The overall idea is as follows:

[0025] In view of the problems existing in the prior art, the utility model provides a laminated steel plate pressing device for printed circuits, comprising a fixing frame 1, a fixing plate 2 is slidably installed inside the fixing frame 1, two rotating rods 7 are symmetrically rotatably installed on both sides of the fixing plate 2, a top rod 8 is slidably installed on the bottom end of the fixing plate 2, and two adjustment plates 6 are symmetrically slidably installed on both sides of the fixing plate 2.

[0026] The ends of the push rod 8 are rotatably connected to the two rotating rods 7 respectively. Two springs 12 are fixedly installed on the side ends of the two adjustment plates 6. A pressure sensor 9 is slidably installed on the side end of the fixed plate 2. A threaded rod 13 is rotatably installed on the bottom end of the pressure sensor 9.

[0027] A top pressure plate 3 is slidably installed inside the fixed frame 1, a second heating plate 5 is fixedly installed inside the top pressure plate 3, a first heating plate 4 is fixedly installed inside the fixed plate 2, an electric push cylinder 11 is fixedly installed on the top of the top pressure plate 3, and a limiting groove 14 is opened inside the fixed frame 1.

[0028] Working principle:

[0029] The first step is to connect the pressure sensor 9 to the input end of the PLC controller, and then connect the output end of the PLC to the relay, and the relay is connected to the electric push cylinder 11. When in use, the threaded rod 13 can be rotated according to the thickness of the circuit board. Since the threaded rod 13 is connected to the fixed plate 2 by threads, rotating the threaded rod 13 can make the pressure sensor 9 slide up and down inside the fixed plate 2, and adjust the upper surface of the pressure sensor 9 to be level with the upper surface of the circuit board. When the electric push cylinder 11 is pressed down, the pressure sensor 9 will detect the change in pressure. When the pressure reaches the set value, it will send a signal to the PLC controller, and the PLC will control the electric push cylinder 11 to stop pressing down. When the pressing is completed, the electric push cylinder 11 will pull the top pressure plate 3 to reset upward. The pressure change is detected by the pressure sensor 9 to accurately control the pressure of the electric push cylinder 11, thereby achieving the effect of reducing the defective rate.

[0030] In the second step, when the pressing is completed, pull the fixing plate 2 to pull out the circuit board, and push the ejector rod 8 inward. The ejector rod 8 lifts the two rotating rods 7 by rotation, so that the circuit board with a higher temperature can be separated from the surface of the first heating plate 4. After the circuit board is taken out, a new circuit board can be placed. After placement, push the fixing plate 2 into the fixing frame 1. The adjusting plates 6 at both ends of the fixing plate 2 will be constrained by the limiting grooves 14, overcome the elastic force of the spring 12 and aggregate inward. During the aggregation process, the circuit board above the first heating plate 4 will be adjusted for pressing. Through the adjusting plate 6 and the ejector rod 8, the position of the circuit board can be quickly adjusted, thereby achieving the effect of improving production efficiency.

[0031] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A laminated steel plate pressing device for printed circuits, comprising a fixing frame (1), characterized in that: A fixing plate (2) is slidably mounted inside the fixing frame (1), and two rotating rods (7) are symmetrically rotatably mounted on both sides of the fixing plate (2).

2. A laminated steel plate pressing device for printed circuits as claimed in claim 1, characterized in that: A top rod (8) is slidably mounted on the bottom end of the fixing plate (2), and two adjustment plates (6) are symmetrically slidably mounted on both sides of the fixing plate (2); The ends of the top rod (8) are rotatably connected to the two rotating rods (7) respectively.

3. A laminated steel plate pressing device for printed circuits as claimed in claim 2, characterized in that: Two springs (12) are fixedly mounted on the side ends of the two adjustment plates (6).

4. A laminated steel plate pressing device for printed circuits as claimed in claim 1, characterized in that: A pressure sensor (9) is slidably mounted on the side end of the fixing plate (2), and a threaded rod (13) is rotatably mounted on the bottom end of the pressure sensor (9).

5. A laminated steel plate pressing device for printed circuits as claimed in claim 1, characterized in that: A top pressure plate (3) is slidably mounted inside the fixed frame (1), and a second heating plate (5) is fixedly mounted inside the top pressure plate (3).

6. A laminated steel plate pressing device for printed circuits as claimed in claim 1, characterized in that: A first heating plate (4) is fixedly mounted inside the fixing plate (2).

7. A laminated steel plate pressing device for printed circuits as claimed in claim 5, characterized in that: An electric push cylinder (11) is fixedly mounted on the top end of the top pressure plate (3).

8. A laminated steel plate pressing device for printed circuits as claimed in claim 1, characterized in that: A limiting groove (14) is provided inside the fixing frame (1).

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