A mounting structure of a patch head of a circuit board patching machine

Abstract

The utility model discloses a kind of mounting structure of paster head of circuit board chip mounter, including fixed plate, symmetrically equipped with moving plate block on fixed plate, adjusting mechanism is arranged in the rear side center of mounting plate, the adjusting mechanism includes the movable connecting sleeve that is adjusted up and down along the vertical direction of mounting plate, connecting column is horizontally installed in movable connecting sleeve, connecting column both ends extend to certain distance to the two sides of mounting plate at equal intervals, the both ends of connecting column are respectively provided with first connecting part, first connecting part is connected with tension spring, and one end of tension spring is detachably arranged in first connecting part, the bottom of two moving plate blocks is equipped with the extension plate corresponding with the both ends of connecting column, and the end of extension plate is provided with second connecting part that can detachably connect the other end of tension spring. The present application is detachably connected by detachable connecting part and adjusting mechanism cooperation, so that tension spring is quickly replaced, and the pre-tightening force of replacement spring is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of chip mounter technology, specifically to a chip mounter head mounting structure for a circuit board chip mounter. Background Technology

[0002] As the core equipment for electronic component placement, the mounting structure of the placement head of the circuit board pick-and-place machine directly affects the placement accuracy and equipment stability.

[0003] Chinese utility model patent (authorization announcement number CN209930832U) discloses a mounting structure for a circuit board pick-and-place machine's placement head, including a mounting plate. Fixing plates are fixedly mounted on both sides of the rear surface of the mounting plate. A stepper motor is fixedly mounted on the rear surface of the mounting plate. A slider is slidably mounted on the front surface of the mounting plate. A moving plate is fixedly mounted on the front surface of the slider. A connecting box is fixedly mounted on the front surface of the moving plate. A nozzle interface is fixedly mounted on the lower surface of the connecting box. This mounting structure for the circuit board pick-and-place machine makes installation simpler and more convenient, and facilitates disassembly for maintenance. It also maintains long-term lubrication inside the rolling groove, reducing internal friction, preventing component damage, and increasing component lifespan. Furthermore, using rolling instead of sliding reduces noise generated by sliding friction, resulting in good noise reduction.

[0004] However, whether it is the existing circuit board pick-and-place machine head mounting structure disclosed above, or the traditional pick-and-place head mounting structure, the return spring, as a key component for realizing the reset of the pick-and-place head, still faces the following technical bottlenecks: Existing structures mostly use welding or fixed connection methods to install return springs. When the spring's elasticity decreases due to long-term high-frequency use, the entire mounting plate needs to be disassembled for replacement. Furthermore, stress concentration is prone to occur at the welded parts, which increases the risk of spring breakage.

[0005] After replacing the spring, it is usually adjusted manually through the adjustment mechanism, such as by turning the screw with a screwdriver to change the spring tension, which can easily lead to errors in preload control.

[0006] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0007] To address the aforementioned problems, this utility model provides a chip mounter structure for a circuit board chip mounter.

[0008] To address the problems of existing technologies, this utility model provides a mounting structure for a board placement machine, including a fixed plate. The fixed plate has symmetrically arranged movable plates that can move vertically along the fixed plate. The key feature is that an adjustment mechanism is provided at the rear center of the mounting plate. This adjustment mechanism includes a movable connecting sleeve that can be adjusted vertically along the mounting plate. A connecting post is horizontally installed inside the movable connecting sleeve. Both ends of the connecting post extend at equal intervals to both sides of the mounting plate to a certain distance. Each end of the connecting post has a first connecting portion connected to a tension spring. One end of the tension spring is detachably attached to the first connecting portion. The bottom of the two movable plates has extension plates corresponding to the ends of the connecting posts. The ends of the extension plates have second connecting portions that can detachably connect the other ends of the tension springs.

[0009] Preferably, the adjustment mechanism further includes an adjustment track, a slider, a screw, an adjustment rod, and a locking plate; The adjustment track is vertically positioned at the center of the rear side of the fixed plate; The screw is rotatably mounted inside the adjusting rail, and both ends of the screw are axially connected to both ends of the adjusting rail. The slider is movably set in the adjustment track. The slider has a threaded hole that mates with the screw thread. One side of the slider is connected to one side of the movable connecting sleeve. The locking plate is located at the bottom center of the fixed plate; One end of the adjusting rod is connected to the end of the screw near the lower side of the fixed plate. The end of the adjusting rod away from the screw can rotate and extend downward through the locking plate for a certain distance. A knob is provided at the extended end of the adjusting rod.

[0010] Preferably, the adjusting rod is provided with a locking nut near the outside of the knob, and the outside of the adjusting rod is provided with an external thread that engages with the locking nut.

[0011] Preferably, the extension plate has a cut that allows it to move vertically along the edge of the fixed plate, and the edge of the fixed plate has a scale corresponding to the extension plate.

[0012] Preferably, the first connecting part and the second connecting part have the same structure, and the first connecting part and the second connecting part include a pressure plate, a threaded column and a fixing cap; The clamping plate in the first connecting part is located at the end of the connecting column, and the clamping plate in the second connecting part is located on the side of the extension plate away from the moving plate. The threaded column is coaxially mounted on the pressure plate; The two ends of the tension spring are respectively sleeved on the outside of the threaded post of the first connecting part and the threaded post of the second connecting part; The fixing cap and the threaded column are screwed together. After the two ends of the tension spring are put into the threaded column, the fixing cap is tightened to press down along the threaded column, and the end face of the spring is squeezed between the fixing cap and the pressure plate to form a rigid clamp.

[0013] Preferably, a rubber pad that can abut against the tension spring is provided on the side of the clamping plate adjacent to the fixing cap.

[0014] The advantages of this utility model compared to the prior art are: 1. With the first connecting part and the second connecting part, when the spring needs to be replaced, it can be quickly disassembled and assembled by simply loosening the fixing cap in the reverse direction.

[0015] 2. When the extension plate moves vertically along the edge of the fixed plate through the cut of the extension plate, the displacement of the extension plate can be accurately controlled according to the scale value, thereby quantifying and adjusting the compression of the tension spring.

[0016] 3. This utility model achieves dual control of the spring installation height and preload by adjusting the slider driven by the screw in the adjustment mechanism, ensuring the positional deviation of the patch head when it resets after placement, thus meeting the requirements of high-precision placement. Attached Figure Description

[0017] Figure 1 A three-dimensional structural diagram of the mounting head of a circuit board pick-and-place machine. Figure 1 .

[0018] Figure 2 A three-dimensional structural diagram of the mounting head of a circuit board pick-and-place machine. Figure 2 .

[0019] Figure 3 A partial three-dimensional adjustment mechanism for the mounting head structure of a circuit board pick-and-place machine. Figure 1 .

[0020] Figure 4 A partial three-dimensional adjustment mechanism for the mounting head structure of a circuit board pick-and-place machine. Figure 2 .

[0021] Figure 5 This is a diagram showing the fit between the locking plate and the locking nut in the mounting structure of a circuit board pick-and-place machine's pick-and-place head.

[0022] Figure 6 A three-dimensional structural diagram of the mounting head of a circuit board pick-and-place machine. Figure 3 .

[0023] Figure 7 This is a partially exploded view of the first and second connecting parts of the mounting head structure of a circuit board pick-and-place machine.

[0024] The following are the labels in the diagram: 1. Fixed plate; 11. Scale; 2. Moving plate; 3. Adjustment mechanism; 31. Movable connecting sleeve; 311. Connecting column; 312. First connecting part; 32. Adjustment track; 33. Slider; 34. Screw; 35. Adjusting rod; 351. Knob; 352. Locking nut; 353. External thread; 36. Locking plate; 4. Extension plate; 41. Second connecting part; 411. Pressure plate; 412. Threaded column; 413. Fixed cap; 4131. Rubber pad; 42. Cutout; 5. Tension spring. Detailed Implementation

[0025] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0026] Reference Figures 1 to 7 As shown: A chip mounter structure for a circuit board placement machine includes a fixed plate 1. The fixed plate 1 has symmetrically arranged movable plates 2 that can move vertically along the fixed plate 1. An adjustment mechanism 3 is provided at the rear center of the mounting plate. The adjustment mechanism 3 includes a movable connecting sleeve 31 that can be adjusted vertically along the mounting plate. A connecting post 311 is horizontally installed inside the movable connecting sleeve 31. Both ends of the connecting post 311 extend at equal intervals to both sides of the mounting plate to a certain distance. A first connecting part 312 is provided at each end of the connecting post 311. A tension spring 5 is connected to the first connecting part 312. One end of the tension spring 5 is detachably attached to the first connecting part 312. The bottom of the two movable plates 2 has an extension plate 4 corresponding to the two ends of the connecting post 311. The end of the extension plate 4 has a second connecting part 41 that can detachably connect the other end of the tension spring 5.

[0027] Existing structures mostly use welding or fixed connection methods to install return springs. When the spring's elasticity decreases due to long-term high-frequency use, the entire mounting plate needs to be removed for replacement. Furthermore, stress concentration is prone to occur at the welded parts, which increases the risk of spring breakage. After replacing the spring, it is usually adjusted manually through the adjustment mechanism 3. For example, by turning the screw with a screwdriver to change the spring tension, the preload control error is likely to occur. Therefore, the main scope of protection of this application is based on the above problems. The other structures of the chip mounting head of the circuit board pick and place machine are not within the scope of protection of this application, and therefore are not described in this application. The following is the installation process for tension spring 5: First, align the hook at one end of the tension spring 5 with the first connecting part 312 of the connecting post 311, insert it horizontally, and fix it through the first connecting part 312; The second step is to move the movable plate 2 so that the second connecting part 41 at the end of the extension plate 4 is close to the other end of the spring. Similarly, the hook of the tension spring 5 is aligned with the second connecting part 41 and inserted, and fixed by the second connecting part 41 to complete the connection of the two ends of the tension spring 5. The third step is to gently pull the spring to check the connection strength and fine-tune the vertical height through the movable connecting sleeve 31 to ensure that the spring preload is appropriate.

[0028] Through the above process, the tension spring 5 can be quickly disassembled and assembled, and can be adapted to the spring installation height requirements of different equipment, while also being able to finely adjust the preload to ensure the accuracy of the patch head return.

[0029] Reference Figures 2 to 5 As shown: The adjustment mechanism 3 also includes an adjustment track 32, a slider 33, a screw 34, an adjustment rod 35, and a locking plate 36; The adjusting track 32 is vertically positioned at the center of the rear side of the fixed plate 1; The screw 34 is rotatably mounted inside the adjusting rail 32, and both ends of the screw 34 are axially connected to both ends of the adjusting rail 32 respectively; The slider 33 is movably disposed within the adjusting track 32. The slider 33 is provided with a threaded hole that engages with the screw 34. One side of the slider 33 is connected to one side of the movable connecting sleeve 31. The locking plate 36 is located at the bottom center of the fixing plate 1; One end of the adjusting rod 35 is connected to the end of the screw 34 near the lower side of the fixed plate 1. The end of the adjusting rod 35 away from the screw 34 can rotate and extend downward through the locking plate 36 for a certain distance. A knob 351 is provided at the extended end of the adjusting rod 35.

[0030] The adjustment mechanism 3 provides guidance for the screw 34 and slider 33 through the vertically set adjustment rail 32. Rotating the knob 351 drives the adjustment rod 35 to rotate the screw 34. The screw 34 drives the slider 33 to move up and down in the adjustment rail 32 through the threaded engagement. The slider 33 drives the movable connecting sleeve 31 to rise and fall synchronously, thereby adjusting the height of the connecting column 311. The locking plate 36 supports the adjustment rod 35 and can lock the adjustment rod 35 after adjustment to the correct position to prevent the screw 34 from rotating due to vibration and other factors, ensuring the stability of the movable connecting sleeve 31, thereby controlling the installation height and preload of the tension spring 5.

[0031] Reference Figure 5 As shown: The adjusting rod 35 is provided with a locking nut 352 near the outside of the knob 351, and the outside of the adjusting rod 35 is provided with an external thread 353 that is threaded to engage with the locking nut 352.

[0032] The adjusting rod 35 is threadedly connected to the locking nut 352 via the external thread 353. After the knob 351 drives the adjusting rod 35 to complete the rotation of the screw 34 and the adjustment of the positions of the slider 33 and the movable connecting sleeve 31, the locking nut 352 is tightened to make it abut against the top surface of the locking plate 36. The friction of the threaded pair and the axial pressure of the locking nut 352 are used to fix the adjusting rod 35 on the locking plate 36, preventing the adjusting rod 35 and the screw 34 from rotating, preventing the slider 33 from being displaced due to equipment vibration or external force, ensuring that the height of the movable connecting sleeve 31 is fixed, and thus maintaining the stability of the preload of the tension spring 5.

[0033] Reference Figure 6 As shown: The extension plate 4 is provided with a cutout 42 that can move vertically along the edge of the fixed plate 1, and the edge of the fixed plate 1 is provided with a scale 11 corresponding to the extension plate 4.

[0034] The cutout 42 on the extension plate 4 allows it to move vertically along the edge of the fixed plate 1. When moving, the extension plate 4 drives the end of the return spring to rise and fall synchronously. The scale 11 on the edge of the fixed plate 1 can intuitively display the distance the extension plate 4 has moved. By observing the value of the scale 11, the position of the extension plate 4 can be precisely controlled, thereby adjusting the tension or compression of the return spring to achieve quantitative adjustment of the spring preload and ensure that the reset force of the patch head meets the working requirements. At the same time, the design of the cutout 42 ensures the guidance and stability of the movement of the extension plate 4.

[0035] Reference Figure 3 and Figure 7 As shown: The first connecting part 312 and the second connecting part 41 have the same structure. The first connecting part 312 and the second connecting part 41 include a pressure plate 411, a threaded post 412 and a fixing cap 413. The clamping plate 411 in the first connecting part 312 is located at the end of the connecting column 311, and the clamping plate 411 in the second connecting part 41 is located on the side of the extension plate 4 away from the moving plate 2. The threaded column 412 is coaxially mounted on the pressure plate 411; The two ends of the tension spring 5 are respectively sleeved on the threaded post 412 of the first connecting part 312 and the outside of the threaded post 412 of the second connecting part 41; The fixing cap 413 is screwed into the threaded post 412. When the two ends of the tension spring 5 are fitted into the threaded post 412, the fixing cap 413 is tightened to press down along the threaded post 412, and the end face of the spring is pressed between the fixing cap 413 and the pressure plate 411 to form a rigid clamp.

[0036] The clamping plate 411 provides a support reference, and the threaded post 412 is coaxially fixed to the clamping plate 411. After the two ends of the tension spring 5 are inserted into the threaded post 412, the fixing cap 413 is tightened to press it down along the threaded post 412, pressing the end face of the spring between the fixing cap 413 and the clamping plate 411 to form a rigid clamp. The degree of spring compression can be adjusted by rotating the fixing cap 413, thereby precisely controlling the spring preload. When the spring needs to be replaced, the fixing cap 413 can be loosened in the opposite direction for quick disassembly. This structure uses the self-locking characteristic of the threaded drive to ensure a stable spring connection.

[0037] Reference Figure 7 As shown: The side of the clamping plate 411 and the fixing cap 413 adjacent to each other is provided with a rubber pad 4131 that can abut against the tension spring 5.

[0038] When the fixing cap 413 is tightened, the rubber pad 4131 is compressed and deformed to fill the gap between the end face of the tension spring 5 and the pressure plate 411 and the fixing cap 413, eliminating the shaking caused by rigid contact and ensuring the stability of the clamping force of the tension spring 5.

[0039] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A mounting structure for a chip mounter of a circuit board placement machine, comprising a fixed plate (1), wherein movable plates (2) are symmetrically arranged on the fixed plate (1) and are capable of moving vertically along the fixed plate (1), characterized in that, An adjustment mechanism (3) is provided at the center of the rear side of the mounting plate. The adjustment mechanism (3) includes a movable connecting sleeve (31) that can be adjusted up and down along the vertical direction of the mounting plate. A connecting column (311) is horizontally installed inside the movable connecting sleeve (31). The two ends of the connecting column (311) extend to both sides of the mounting plate at equal intervals to a certain distance. A first connecting part (312) is provided at each end of the connecting column (311). A tension spring (5) is connected to the first connecting part (312). One end of the tension spring (5) is detachably provided at the first connecting part (312). The bottom of the two movable plates (2) is provided with an extension plate (4) corresponding to the two ends of the connecting column (311). The end of the extension plate (4) is provided with a second connecting part (41) that can detachably connect the other end of the tension spring (5).

2. The mounting head structure of a circuit board pick-and-place machine according to claim 1, characterized in that, The adjustment mechanism (3) also includes an adjustment track (32), a slider (33), a screw (34), an adjustment rod (35), and a locking plate (36); The adjusting track (32) is vertically set at the center of the rear side of the fixed plate (1); The screw (34) is rotatably mounted in the adjusting rail (32), and the two ends of the screw (34) are respectively axially connected to the two ends of the adjusting rail (32); The slider (33) is movably set in the adjustment track (32). The slider (33) is provided with a screw hole that is threaded to the screw (34). One side of the slider (33) is connected to one side of the movable connecting sleeve (31). The locking plate (36) is located at the bottom center of the fixing plate (1); One end of the adjusting rod (35) is connected to the end of the screw (34) near the lower side of the fixed plate (1). The end of the adjusting rod (35) away from the screw (34) can rotate and extend downward through the locking plate (36) for a certain distance. A knob (351) is provided at the extended end of the adjusting rod (35).

3. The chip mounter structure for a circuit board placement machine according to claim 2, characterized in that, The adjusting rod (35) is provided with a locking nut (352) near the outside of the knob (351), and the adjusting rod (35) is provided with an external thread (353) that is threaded to the locking nut (352).

4. The mounting structure of the placement head of a circuit board placement machine according to claim 3, characterized in that, The extension plate (4) has a cut (42) that can move vertically along the edge of the fixed plate (1), and the edge of the fixed plate (1) has a scale (11) corresponding to the extension plate (4).

5. The chip mounter structure for a circuit board placement machine according to claim 1, characterized in that, The first connecting part (312) and the second connecting part (41) have the same structure. The first connecting part (312) and the second connecting part (41) include a clamping plate (411), a threaded column (412) and a fixing cap (413). The clamping plate (411) in the first connecting part (312) is located at the end of the connecting column (311), and the clamping plate (411) in the second connecting part (41) is located on the side of the extension plate (4) away from the moving plate (2); The threaded column (412) is coaxially mounted on the pressure plate (411); The two ends of the tension spring (5) are respectively sleeved on the threaded post (412) of the first connecting part (312) and the outside of the threaded post (412) of the second connecting part (41); The fixing cap (413) is screwed into the threaded column (412). When the two ends of the tension spring (5) are fitted into the threaded column (412), the fixing cap (413) is tightened to press down along the threaded column (412), and the end face of the spring is squeezed between the fixing cap (413) and the pressure plate (411) to form a rigid clamp.

6. The chip mounter structure for a circuit board placement machine according to claim 5, characterized in that, The clamping plate (411) and the fixing cap (413) are respectively provided with rubber pads (4131) that can abut against the tension spring (5).

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