Integrated circuit board mounting clamp

Abstract

The utility model discloses an integrated circuit board mounting clamp, which is characterized by comprising a fixed flat plate, a movable flat plate, four supporting tables, four guide rods, four positioning rods and an air cylinder, the movable flat plate is positioned above the fixed flat plate; the lower ends of the four supporting tables are fixedly connected with the movable flat plate and are distributed in a rectangular shape; the four guide rods are arranged on the fixed flat plate in a penetrating manner and are distributed in a rectangular manner; the upper ends of the four guide rods are fixedly connected with the movable flat plate; the lower ends of the four positioning rods are fixedly connected with the fixed flat plate and are distributed in a rectangular shape; the four positioning rods are respectively arranged on the four supporting tables in a penetrating manner; the air cylinder is used for driving the movable flat plate to ascend and descend. The positioning rod comprises a main rod section and a reducing section which is arranged at the upper end of the main rod section, and the outer diameter of the reducing section is reduced. The positioning and clamping device can be used for accurate positioning and clamping when the integrated circuit board is mounted, can automatically loosen and retreat before being taken out, cannot be clamped, is convenient to take out the product easily, and cannot damage the integrated circuit board.

Description

Technical Field

[0001] The utility model relates to an integrated circuit board mounting fixture. Background Art

[0002] SMT patch is the process of accurately installing components (electrical components) on fixed positions on PCB boards (i.e. integrated circuit boards). The SMT patch processing process is complex and requires high precision.

[0003] In SMT patch production, the PCB board (i.e. integrated circuit board) needs to be accurately positioned and clamped. Figure 1 This is a circuit board mounting fixture previously used by our company. It features a fixed base plate M-1, on which four support platforms M-2 are fixed. Each support platform M-2 is equipped with a positioning pin M-3 on its top surface. During mounting, the four connection holes N-1 on a PCB (i.e., an integrated circuit board) engage with the positioning pins M-3 on the four support platforms M-2, positioning the PCB horizontally. However, certain deficiencies have been discovered during use, as described below. To overcome positioning errors caused by clearance fit, the positioning pins M-3 and the connection holes on the PCB N require an interference fit, resulting in a clearance-free fit and improved positioning accuracy, better meeting the requirements of high-precision product production. However, after mounting, the PCB (i.e., integrated circuit board) can become stuck on the positioning pins (four in total), making it difficult to remove. Therefore, an improved design for the existing circuit board mounting fixture is needed.

[0004] In addition, it is necessary to take into account that the PCB board (i.e. integrated circuit board) should not be damaged when removing it. Utility Model Content

[0005] The utility model provides an integrated circuit board mounting fixture to solve the problem that a PCB board (i.e. an integrated circuit board) is stuck and difficult to remove after mounting.

[0006] In order to achieve the above-mentioned object, the solution of the utility model is as follows: an integrated circuit board mounting fixture, characterized in that it includes a fixed plate, a movable plate, four support platforms, four guide rods, four positioning rods and a cylinder; the movable plate is located above the fixed plate; the lower ends of the four support platforms are fixedly connected to the movable plate and are distributed in a rectangular shape; the four guide rods are passed through the fixed plate and are distributed in a rectangular shape; the upper ends of the four guide rods are fixedly connected to the movable plate; the lower ends of the four positioning rods are fixed to the fixed plate and are distributed in a rectangular shape; the four positioning rods are respectively passed through the four support platforms;

[0007] The cylinder is used to drive the movable plate to move up and down; the positioning rod includes a main rod section and a reduced diameter section which is arranged at the upper end of the main rod section and has a smaller outer diameter.

[0008] Preferably, the cylinder is fixed on the fixed plate, and the output end of the cylinder faces upward and is connected to the movable plate.

[0009] Preferably, the cylinder is a telescopic hydraulic cylinder or a telescopic air cylinder.

[0010] Preferably, the fixed plate is provided with four guide holes distributed in a rectangular shape; the four guide rods are respectively connected to the four guide holes.

[0011] Furthermore, a guide sleeve is provided in the guide hole; and the guide rod and the guide sleeve are clearance-fitted.

[0012] Furthermore, a sensing plate is installed on the movable plate; a sensing switch is installed on the fixed plate and corresponds to the position of the sensing plate; and when the cylinder drives the movable plate downward to its position, the sensing plate will be sensed by the sensing switch.

[0013] Furthermore, two side panels are provided on the left and right sides of the fixed plate respectively; a laser emitter and a laser receiver are respectively installed on the two side panels; and the laser emitter and the laser receiver are positioned correspondingly.

[0014] Beneficial effects of the utility model:

[0015] First, the utility model can be used for precise positioning and clamping when mounting integrated circuit boards, and can automatically release and retract before removal, so that the product will not be stuck and can be easily removed without damaging the integrated circuit board.

[0016] Secondly, before removal, the PCB is moved upward synchronously with the four supports on the movable plate when the cylinder drives the movable plate upward and is held together; the reduced diameter sections of the four positioning rods automatically retract into the four connection holes of the PCB, and the upper and lower surfaces of the PCB are not impacted during the entire movement, thus preventing damage to the PCB. The utility model is very safe, reliable and stable.

[0017] Third, the present invention can obtain sensing signals during different steps through the induction switch, cylinder, laser transmitter and laser receiver, and can cooperate with the PCB board grabbing robot and the placement robot to achieve fully automated production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main view of a circuit board mounting fixture originally used by our company.

[0019] Figure 2 The utility model is a main view of an integrated circuit board mounting fixture when it is lowered into position on a movable plate.

[0020] Figure 3 The utility model is a three-dimensional diagram of an integrated circuit board mounting fixture when it is lowered into position under a movable plate.

[0021] Figure 4 This is a main view of an integrated circuit board mounting fixture in the present utility model when the PCB board is positioned and clamped in place.

[0022] Figure 5 The utility model is a main view of an integrated circuit board mounting fixture when the PCB board is released after being mounted.

[0023] Figure 6 yes Figure 5 Enlarged view of point K in the middle. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] Example 1: See Figure 2-5 , an integrated circuit board mounting fixture, which includes a fixed plate 1, a movable plate 2, four supports 3, four guide rods 4, four positioning rods 5 and a cylinder 6.

[0026] Wherein, the movable plate 2 is located above the fixed plate 1. When in use, the fixed plate 1 is fixedly mounted on a frame or a workbench and is in a fixed state.

[0027] The lower ends of the four supports 3 are fixed to the moving plate 2 and are distributed in a rectangular shape;

[0028] The four guide rods 4 are provided on the fixed plate 1 and are distributed in a rectangular shape. In this embodiment, preferably, the fixed plate 1 is provided with four guide holes 1-1 distributed in a rectangular shape; the four guide rods 4 are respectively connected with the four guide holes 1-1.

[0029] Furthermore, a guide sleeve 1-2 is provided in the guide hole 1-1; and the guide rod 4 is clearance-fitted with the guide sleeve 1-2.

[0030] The upper ends of the four guide rods 4 are fixedly connected to the movable plate 2 ; the lower ends of the four positioning rods 5 are fixedly connected to the fixed plate 1 and are distributed in a rectangular shape.

[0031] The four positioning rods 5 are respectively passed through the four supports 3 .

[0032] The cylinder 6 is used to drive the movable plate 2 to move up and down. In this embodiment, the cylinder 6 is fixed on the fixed plate 1 , and the output end of the cylinder 6 faces upward and is connected to the movable plate 2 .

[0033] Preferably, the cylinder 6 is a telescopic hydraulic cylinder or a telescopic air cylinder.

[0034] The positioning rod 5 includes a main rod section 5-1 and a reduced diameter section 5-2 disposed at the upper end of the main rod section 5-1. Specifically, a through-hole 3-1 is provided at the center of the support 3. The main rod section 5-1 of the positioning rod 5 is in a sliding engagement with the through-hole 3-1 (i.e., a clearance fit).

[0035] The outer diameter of the main rod section 5-1 matches the connecting hole N-1 of the PCB board N and has an interference fit with each other, while the reduced diameter section 5-2 has a clearance fit with the connecting hole N-1.

[0036] The working process of this embodiment is as follows:

[0037] First, the cylinder 6 works and drives the movable plate 2 downward to its position (see Figure 2-3 );

[0038] Then, place the PCB to be mounted on the four supports 3, so that the four connection holes N-1 of the PCB N are respectively positioned with the upper parts of the main rod sections 5-1 of the four positioning rods 5 (i.e., interference fit), and the PCB (i.e., integrated circuit board) is horizontally supported by the four supports 3, thus completing the precise positioning and clamping before mounting (see Figure 4 );

[0039] Then, the placement is started again (it can be automatically completed by a placement robot, but it does not belong to the invention of this application and will not be described in detail);

[0040] Finally, the cylinder 6 is started to work and drive the movable plate 2 upward to the position (see Figure 5 ), at this time, the PCB board N moves up synchronously with the four supports 3 on the movable plate 2 and is kept together; and the reduced diameter sections 5-2 of the four positioning rods 5 are respectively retracted into the four connecting holes N-1 of the PCB board N, and because the outer diameter of the reduced diameter section 5-2 becomes smaller and there is a clearance fit between the connecting holes N-1 (see Figure 6 ), it will no longer be stuck, and then the PCB board N can be easily taken out.

[0041] Before removal, when the cylinder 6 drives the movable plate 2 upward, the PCB board N is synchronously moved upward and held together with the four supports 3 on the movable plate 2; and the reduced diameter sections 5-2 of the four positioning rods 5 are automatically retracted into the four connecting holes N-1 of the PCB board N respectively. During the entire movement, no impact effect is caused on the upper and lower surfaces of the PCB board N, so no damage is caused, which is very safe, reliable and stable.

[0042] In summary, this embodiment can be used for precise positioning and clamping of PCB boards (i.e., integrated circuit boards) during mounting, and automatically releases the clamps before removal, preventing them from getting stuck and facilitating easy removal of the product without damaging the integrated circuit board.

[0043] Example 2: This example is based on Example 1 and is further improved:

[0044] See Figure 2-5 Furthermore, a sensing plate 7 is mounted on the movable plate 2, and a sensing switch 8 is mounted on the fixed plate 1. The sensing switch 8 corresponds to the position of the sensing plate 7. When the air cylinder 6 drives the movable plate 2 downward into position, the sensing plate 7 is sensed by the sensing switch 8. When the air cylinder 6 operates and drives the movable plate 2 downward into position, the sensing plate 7 is sensed by the sensing switch 8, generating a signal. The control system then activates and executes the next action. In other words, the control system activates or performs the PCB placement operation. This allows for cooperation with a PCB board grabbing robot (not shown) to automatically place the PCB board.

[0045] Furthermore, two side panels 9 are provided on the left and right sides of the fixed plate 1 respectively; a laser emitter 10 and a laser receiver 11 are respectively installed on the two side panels 9; and the laser emitter 10 and the laser receiver 11 are positioned correspondingly.

[0046] Specifically, after the PCB board is placed on the four supports 3 and positioned, the laser emitted by the laser transmitter 10 will be blocked by the PCB board. At this time, the laser receiver 11 cannot receive the laser signal. At this time, the control system starts to execute the next action, that is, starts the placement robot (not shown in the figure) to perform the placement work.

[0047] Specifically, the induction switch 8, the cylinder 6, the laser transmitter 10 and the laser receiver 11 are connected to the control system circuit.

[0048] Because the detection and induction of the induction switch 8, the cylinder 6, the laser transmitter 10 and the laser receiver 11 can obtain the induction signals of the clamp at different steps, it can cooperate with the PCB board grabbing robot and the placement robot to achieve fully automated production. The above describes the preferred specific embodiments of the present utility model in detail. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present utility model without creative work. Therefore, any technical solutions that can be obtained by technicians in this technical field based on the concept of the present utility model through logical analysis, reasoning or limited experiments on the basis of existing technology should be within the scope of protection determined by the claims.

Claims

1. An integrated circuit board mounting fixture, characterized in that: It includes a fixed plate (1), a movable plate (2), four support platforms (3), four guide rods (4), four positioning rods (5) and a cylinder (6); The movable plate (2) is located above the fixed plate (1); the lower ends of the four supports (3) are fixedly connected to the movable plate (2) and are distributed in a rectangular shape; The four guide rods (4) are passed through the fixed plate (1) and are distributed in a rectangular shape; the upper ends of the four guide rods (4) are fixedly connected to the movable plate (2); The lower ends of the four positioning rods (5) are fixedly connected to the fixed plate (1) and are distributed in a rectangular shape; the four positioning rods (5) are respectively passed through the four support platforms (3); The cylinder (6) is used to drive the movable plate (2) to move up and down; The positioning rod (5) comprises a main rod section (5-1) and a reduced diameter section (5-2) which is arranged at the upper end of the main rod section (5-1) and has a smaller outer diameter.

2. The integrated circuit board mounting fixture according to claim 1, wherein: The cylinder (6) is fixed on the fixed plate (1), and the output end of the cylinder (6) faces upward and is connected to the movable plate (2).

3. An integrated circuit board mounting fixture as claimed in claim 1 or 2, characterized in that: The cylinder (6) is a telescopic hydraulic cylinder or a telescopic air cylinder.

4. The integrated circuit board mounting fixture according to claim 1, wherein: The fixed plate (1) is provided with four guide holes (1-1) distributed in a rectangular shape; the four guide rods (4) are respectively connected to the four guide holes (1-1).

5. The integrated circuit board mounting fixture according to claim 4, wherein: A guide sleeve (1-2) is provided in the guide hole (1-1); the guide rod (4) and the guide sleeve (1-2) are clearance-matched.

6. The integrated circuit board mounting fixture according to claim 1, wherein: A sensing plate (7) is mounted on the moving plate (2); An induction switch (8) is installed on the fixed plate (1); and when the cylinder (6) drives the movable plate (2) to move downward to its proper position, the induction plate (7) will be sensed by the induction switch (8).

7. The integrated circuit board mounting fixture according to claim 1, wherein: Two side plates (9) are respectively provided on the left and right sides of the fixed plate (1); a laser transmitter (10) and a laser receiver (11) are respectively installed on the two side plates (9); and the laser transmitter (10) and the laser receiver (11) are positioned correspondingly.

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