A precision positioner for a circuit board chip mounter

Abstract

This utility model discloses a precision positioner for a PCB placement machine, relating to the technical field of precision positioners for PCB placement machines. It includes a fixed base and a precision adjustment positioning assembly. The precision adjustment positioning assembly is fixedly connected to the center of the back of the fixed base. The precision adjustment positioning assembly includes a support plate fixedly connected to the center of the back of the fixed base. A fixed column is fixedly connected to the top of the front of the support plate. A fixed box is fixedly connected to the surface of the fixed column. A protective column is fixedly connected inside the fixed column. A hydraulic rod body is fixedly connected inside the protective column. Through the setting of the precision adjustment positioning assembly, when the device is operated by personnel, the hydraulic rod body drives the sliding box to achieve coarse adjustment in the Z-axis direction, and the servo motor drives the high-strength threaded rod to drive the sliding block to achieve fine adjustment in the X-axis direction. Combined with the flexible structure of the sliding rod and the return spring, positioning accuracy can be achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of precision positioners for PCB placement machines, specifically a precision positioner for PCB placement machines. Background Technology

[0002] As a core piece of equipment in the electronics manufacturing industry, the positioning accuracy of PCB placement machines directly affects the quality and performance of electronic products. Traditional placement machine positioning systems mostly rely on mechanical limits or single vision recognition, which have problems such as insufficient positioning accuracy and low adjustment efficiency. Under the demand for high-density placement, the precise placement of tiny components places higher demands on the positioning system.

[0003] When using existing PCB placement machine precision positioning devices...

[0004] (1) The positioning adjustment mechanism mostly uses rigid connection and lacks flexible buffer structure, which is prone to positioning deviation due to vibration.

[0005] (2) The fixed device has poor compatibility with different specifications of circuit boards, and the adapter components need to be replaced frequently, which affects production efficiency.

[0006] To address the above problems, this utility model provides a precision positioner for a circuit board chip mounter. Utility Model Content

[0007] The purpose of this invention is to provide a precision positioner for a circuit board chip mounter. This invention features multi-dimensional precision adjustment, flexible buffer positioning, and adaptive fixing, thereby solving the problems of insufficient accuracy and poor compatibility of traditional positioners.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a precision positioner for a circuit board placement machine, comprising a fixed base and a precision adjustment and positioning component, wherein the precision adjustment and positioning component is fixedly connected to the middle of the back side of the fixed base, and the precision adjustment and positioning component includes a support plate fixedly connected to the middle of the back side of the fixed base;

[0009] A fixed column is fixedly connected to the top of the front of the support plate. A fixed box is fixedly connected to the surface of the fixed column. A protective column is fixedly connected inside the fixed column. A hydraulic rod body is fixedly connected inside the protective column. A sliding box is fixedly connected to one end of the hydraulic rod body.

[0010] Furthermore, the sliding box is slidably connected to the inner wall of the fixed box, and a motor box is fixedly connected to one side of the inner wall of the sliding box. A servo motor is fixedly connected inside the motor box, and a transmission rod is fixedly connected to the output end of the servo motor. The servo motor drives the transmission rod to achieve precise lateral positioning and adjustment.

[0011] Furthermore, a high-strength threaded rod is fixedly connected to one end of the transmission rod, and a bearing is fixedly connected to one end of the high-strength threaded rod. One end of the bearing is fixedly connected to one side of the inner wall of the sliding box, and the rotational stability of the threaded rod is ensured by the bearing support.

[0012] Furthermore, the surface of the high-strength threaded rod is threaded with a sliding block, which is slidably connected to the inner wall of the sliding box. The bottom end of the sliding block is fixedly connected to a connecting column, and the rotational motion is converted into linear motion by using threaded transmission to achieve micron-level positioning accuracy.

[0013] Furthermore, a sliding rod is slidably connected inside the connecting post, a fixed suction cup is fixedly connected to the bottom end of the sliding rod, a limit ring is fixedly connected to the surface of the sliding rod, a return spring is sleeved on the bottom end of the surface of the sliding rod, a sliding post is fixedly connected to the top end of the sliding rod, and a control handle is fixedly connected to the surface of the sliding post. The return spring provides flexible buffering during the adsorption process, avoiding damage to the circuit board from hard contact.

[0014] Furthermore, a fixing component is fixedly connected to the middle of the top of the fixing base. The fixing component includes a connecting box fixedly connected to the middle of the top of the fixing base. The connecting box has a threaded rod with positive and negative threads inside. One end of the threaded rod is rotatably connected to the inner wall of the connecting box, and the other end of the threaded rod is fixedly connected to a control panel. The synchronous opposing movement of the clamping plates on both sides is realized through the threaded rod, which can quickly adapt to circuit boards of different sizes.

[0015] Furthermore, clamping plates are threadedly connected to both sides of the surface of the positive and negative threaded rod, and damping expansion joints are fixedly connected to the surface of the clamping plates. Shock-absorbing plates are fixedly connected to the surface of the damping expansion joints. The damping expansion joints and shock-absorbing plates form a two-stage buffer structure, which effectively absorbs the vibration energy during the mounting process.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model provides a precision positioner for a circuit board chip mounter.

[0018] (1) By precisely adjusting the settings of the positioning components, when the personnel operate the device, the hydraulic rod body drives the sliding box to achieve coarse adjustment in the Z-axis direction, and the servo motor drives the high-strength threaded rod to drive the sliding block to achieve fine adjustment in the X-axis direction. Combined with the flexible structure of the sliding rod and the return spring, positioning accuracy can be achieved.

[0019] (2) By setting the fixed components, when the personnel operate the device, the rotating control disk drives the positive and negative thread rods to make the clamping plate move synchronously in opposite directions, which can adapt to circuit boards of different widths. The dual buffer structure of the damping expansion joint and the shock absorption plate improves the vibration attenuation rate during the mounting process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device of this utility model;

[0021] Figure 2 This is a schematic diagram of the precise adjustment and positioning component structure of this utility model;

[0022] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0023] Figure 4 This is a schematic diagram of the fixing component structure of this utility model;

[0024] Figure 5 This is a front view schematic diagram of the present utility model.

[0025] In the diagram: 1. Fixed base; 2. Precision adjustment and positioning component; 201. Support plate; 202. Fixed column; 203. Fixed box; 204. Protective column; 205. Hydraulic rod body; 206. Sliding box; 207. Motor box; 208. Servo motor; 209. Transmission rod; 210. High-strength threaded rod; 211. Bearing; 212. Sliding block; 213. Connecting column; 214. Sliding rod; 215. Fixed suction cup; 216. Limiting ring; 217. Return spring; 218. Sliding column; 219. Control handle; 3. Fixed component; 301. Connecting box; 302. Positive and negative threaded rod; 303. Control panel; 304. Clamping plate; 305. Damping expansion joint; 306. Shock absorber plate. Detailed Implementation

[0026] 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.

[0027] To solve the problem of how to effectively position and adjust the technology, such as Figure 1-5 As shown, the following preferred technical solutions are provided:

[0028] A precision positioner for a circuit board placement machine includes a fixed base 1 and a precision adjustment and positioning component 2. The precision adjustment and positioning component 2 is fixedly connected to the middle of the back of the fixed base 1. By setting the precision adjustment and positioning component 2, when the device is operated by personnel, the hydraulic rod body 205 drives the sliding box 206 to achieve coarse adjustment in the Z-axis direction, and the servo motor 208 drives the high-strength threaded rod 210 to drive the sliding block 212 to achieve fine adjustment in the X-axis direction. Combined with the flexible structure of the sliding rod 214 and the return spring 217, positioning accuracy can be achieved. The precision adjustment and positioning component 2 includes a support plate 201 fixedly connected to the middle of the back of the fixed base 1.

[0029] A fixed post 202 is fixedly connected to the top of the front of the support plate 201. A fixed box 203 is fixedly connected to the surface of the fixed post 202. A protective post 204 is fixedly connected inside the fixed post 202. A hydraulic rod body 205 is fixedly connected inside the protective post 204. A sliding box 206 is fixedly connected to one end of the hydraulic rod body 205.

[0030] Specifically, when operating the device, the operator first inputs positioning parameters into the control system according to the circuit board mounting requirements. The hydraulic rod body 205 then starts, pushing the sliding box 206 to slide on the inner wall of the fixed box 203, quickly completing the initial adjustment of the height in the Z-axis direction, so that the fixed suction cup 215 approaches the circuit board. Then, the servo motor 208 runs, driving the high-strength threaded rod 210 to rotate through the transmission rod 209, driving the sliding block 212 to move precisely within the sliding box 206, achieving fine positioning in the X-axis direction. Finally, the operator manually presses down the control handle 219, and the sliding column 218 drives the sliding rod 214 to move down, so that the fixed suction cup 215 contacts the circuit board. The return spring 217 is compressed to provide buffering force to avoid hard collisions, and at the same time, the fixed suction cup 215 activates its adsorption function to fix the circuit board.

[0031] Furthermore, such as Figure 3 As shown, the following preferred technical solutions are provided:

[0032] The sliding box 206 is slidably connected to the inner wall of the fixed box 203. A motor box 207 is fixedly connected to one side of the inner wall of the sliding box 206. A servo motor 208 is fixedly connected inside the motor box 207. A transmission rod 209 is fixedly connected to the output end of the servo motor 208. The purpose of this design is to utilize the high precision and high response characteristics of the servo motor 208 to stably transmit the rotational power of the motor to the high-strength threaded rod 210 through the transmission rod 209, thereby achieving precise control of the displacement of the sliding block 212 and ensuring that the positioning accuracy in the X-axis direction reaches ±0.01mm.

[0033] Furthermore, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0034] One end of the transmission rod 209 is fixedly connected to a high-strength threaded rod 210, and one end of the high-strength threaded rod 210 is fixedly connected to a bearing 211. One end of the bearing 211 is fixedly connected to one side of the inner wall of the sliding box 206. The purpose of this design is that the bearing 211 provides stable support for the high-strength threaded rod 210, reduces its radial and axial sway during rotation, reduces friction loss, and at the same time bears the load force during the threaded rod transmission process, ensuring the stability and service life of the transmission system.

[0035] Furthermore, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0036] The high-strength threaded rod 210 has a sliding block 212 threadedly connected to its surface. The sliding block 212 is slidably connected to the inner wall of the sliding box 206. The bottom end of the sliding block 212 is fixedly connected to a connecting post 213. The purpose of this design is to convert the rotational motion of the threaded rod into the linear motion of the sliding block 212 through the threaded transmission between the high-strength threaded rod 210 and the sliding block 212. By utilizing the lead accuracy of the precision thread, the displacement of the sliding block 212 can be precisely controlled, thereby driving the connecting post 213 and the fixed suction cup 215 to be precisely positioned.

[0037] Furthermore, such as Figure 2 As shown, the following preferred technical solutions are provided:

[0038] A sliding rod 214 is slidably connected inside the connecting post 213. A fixed suction cup 215 is fixedly connected to the bottom end of the sliding rod 214. A limit ring 216 is fixedly connected to the surface of the sliding rod 214. A return spring 217 is sleeved on the bottom end of the surface of the sliding rod 214. A sliding post 218 is fixedly connected to the top end of the sliding rod 214. A control handle 219 is fixedly connected to the surface of the sliding post 218. The purpose of this design is that the return spring 217 provides a flexible buffer function when the fixed suction cup 215 contacts the circuit board, preventing damage to the circuit board due to collision; the limit ring 216 limits the maximum stroke of the sliding rod 214 to avoid excessive compression of the spring; and the control handle 219 allows the operator to manually adjust the downward pressing action of the fixed suction cup 215 and flexibly control the adsorption process.

[0039] Furthermore, such as Figure 4 As shown, the following preferred technical solutions are provided:

[0040] A fixing component 3 is fixedly connected to the middle of the top end of the fixing base 1. The fixing component 3 includes a connecting box 301 fixedly connected to the middle of the top end of the fixing base 1. A positive and negative threaded rod 302 is threadedly connected inside the connecting box 301. One end of the positive and negative threaded rod 302 is rotatably connected to the inner wall of the connecting box 301, and the other end of the positive and negative threaded rod 302 is fixedly connected to a control disk 303. The purpose of this design is that rotating the control disk 303 drives the positive and negative threaded rod 302 to rotate. By utilizing the different directions of the threads at both ends of the threaded rod, the clamping plates 304 on both sides move synchronously towards the middle or both sides, quickly adapting to circuit boards of different widths and realizing one-click quick clamping and loosening.

[0041] Furthermore, such as Figure 4 As shown, the following preferred technical solutions are provided:

[0042] Both sides of the surface of the positive and negative threaded rod 302 are threadedly connected to clamping plates 304. The surfaces of the clamping plates 304 are fixedly connected to damping expansion joints 305, and the surfaces of the damping expansion joints 305 are fixedly connected to shock-absorbing plates 306. The purpose of this design is that the damping expansion joints 305 absorb the vibration generated by the clamping force when the clamping plates 304 clamp the circuit board, and attenuate the impact of external vibration on the circuit board during the operation of the pick-and-place machine. The shock-absorbing plates 306 contact the circuit board through elastic material to further buffer vibration, protect the precision components on the circuit board, and ensure the stability of the placement process.

[0043] Working principle: In use, first place the circuit board on the fixed base 1, rotate the control disk 303, and the positive and negative threaded rods 302 drive the clamping plate 304 to clamp the circuit board through the damping telescopic device 305 and the shock-absorbing plate 306; then, the control system starts the precision adjustment and positioning component 2, the hydraulic rod body 205 completes the Z-axis coarse adjustment, and the servo motor 208 achieves the X-axis fine adjustment through the transmission rod 209 and the high-strength threaded rod 210, so that the fixed suction cup 215 reaches the preset position; manually operate the control handle 219, the fixed suction cup 215 adsorbs the circuit board, and the return spring 217 provides flexible contact; during the mounting process, the damping telescopic device 305 and the shock-absorbing plate 306 continuously buffer the vibration to ensure the stable positioning of the circuit board. After the precise mounting is completed, the fixed suction cup 215 releases the adsorption, the clamping plate 304 is released, and the circuit board is taken out.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] 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 precision positioner for a circuit board placement machine, comprising a fixed base (1) and a precision adjustment and positioning assembly (2), characterized in that: A precision adjustment and positioning component (2) is fixedly connected to the middle of the back of the fixed base (1). The precision adjustment and positioning component (2) includes a support plate (201) fixedly connected to the middle of the back of the fixed base (1). A fixing post (202) is fixedly connected to the top of the front of the support plate (201). A fixing box (203) is fixedly connected to the surface of the fixing post (202). A protective post (204) is fixedly connected inside the fixing post (202). A hydraulic rod body (205) is fixedly connected inside the protective post (204). A sliding box (206) is fixedly connected to one end of the hydraulic rod body (205).

2. The precision positioner for a circuit board chip mounter according to claim 1, characterized in that: The sliding box (206) is slidably connected to the inner wall of the fixed box (203). A motor box (207) is fixedly connected to one side of the inner wall of the sliding box (206). A servo motor (208) is fixedly connected inside the motor box (207). A transmission rod (209) is fixedly connected to the output end of the servo motor (208).

3. The precision positioner for a circuit board chip mounter according to claim 2, characterized in that: One end of the transmission rod (209) is fixedly connected to a high-strength threaded rod (210), and one end of the high-strength threaded rod (210) is fixedly connected to a bearing (211). One end of the bearing (211) is fixedly connected to one side of the inner wall of the sliding box (206).

4. The precision positioner for a circuit board chip mounter according to claim 3, characterized in that: The surface of the high-strength threaded rod (210) is threaded with a sliding block (212), which is slidably connected to the inner wall of the sliding box (206). The bottom end of the sliding block (212) is fixedly connected with a connecting post (213).

5. A precise positioner for a circuit board chip mounter according to claim 4, characterized in that: The connecting column (213) is internally slidably connected to a sliding rod (214). The bottom end of the sliding rod (214) is fixedly connected to a fixed suction cup (215). The surface of the sliding rod (214) is fixedly connected to a limit ring (216). The bottom end of the surface of the sliding rod (214) is sleeved with a return spring (217). The top end of the sliding rod (214) is fixedly connected to a sliding column (218). The surface of the sliding column (218) is fixedly connected to a control handle (219).

6. A precise positioner for a circuit board chip mounter according to claim 1, characterized in that: A fixing component (3) is fixedly connected to the middle of the top of the fixing base (1). The fixing component (3) includes a connecting box (301) fixedly connected to the middle of the top of the fixing base (1). A positive and negative threaded rod (302) is threadedly connected inside the connecting box (301). One end of the positive and negative threaded rod (302) is rotatably connected to the inner wall of the connecting box (301). The other end of the positive and negative threaded rod (302) is fixedly connected to a control panel (303).

7. A precise positioner for a circuit board placement machine according to claim 6, characterized in that: Both sides of the surface of the positive and negative threaded rod (302) are threadedly connected to clamping plates (304), and the surfaces of the clamping plates (304) are fixedly connected to damping expansion joints (305), and the surfaces of the damping expansion joints (305) are fixedly connected to shock-absorbing plates (306).

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