PCB screwing machine

Abstract

The utility model discloses a PCB screw machine, include: displacement module, including fixed base, base, linear module and link plate, and one end of fixed base along first direction is equipped with the connecting clamping groove, and bottom is equipped with a plurality of linear guide rails, and a plurality of linear guide rails all extend along second direction, and along first direction interval setting. The base is located below the fixed base, and is equipped with the slide corresponding setting of linear guide rail, and is slidably connected with linear guide rail. Linear module extends along second direction, and is located in one side of fixed base along first direction. The top of linear module is slidably equipped with the sliding block, and the top of sliding block is equipped with the adapter plate. One end along first direction of link plate is fixedly connected with the connecting clamping groove, and the other end is connected with adapter plate, is used for moving the fixed base along second direction relative to base through linear module.

Description

Technical Field

[0001] This utility model relates to the field of PCB circuit board application technology, and specifically to a PCB board screw machine. Background Technology

[0002] A screw fastening machine is a small, automated machine for fastening screws. Its operating structure generally consists of two parts: a feeding section and an electric screwdriver section. The feeding section is responsible for sorting and supplying screws, while the electric screwdriver section is responsible for picking up and fastening the screws. Screw fastening machines have improved work efficiency and reduced manual labor intensity. A screw fastening machine comprises a feeding system and a screw fastening system. The feeding section, also known as a screw arranging machine or screw feeder, is a relatively simple small automated device that arranges screws in a row to improve work efficiency and is widely used in the electronics industry.

[0003] PCBs (Printed Circuit Boards) serve to interconnect electronic components, but screwing is required when assembling battery pack PCBs. Currently, battery pack PCBs are generally screwed manually with a power screwdriver in a semi-automatic manner. This semi-automatic screwing method suffers from low efficiency, high labor intensity, and high labor costs. Utility Model Content

[0004] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a solution to the problem of low work efficiency in semi-automatic screw driving mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides a PCB board screw machine, comprising: a displacement module including a fixed base, a base, a linear module, and a connecting plate. The fixed base has a connecting slot at one end along a first direction and multiple linear guide rails at its bottom. These linear guide rails extend along a second direction and are spaced apart along the first direction. The base is located below the fixed base and has slide rails corresponding to the linear guide rails, allowing for slidable connection. The linear module extends along the second direction and is located on one side of the fixed base along the first direction. A slider is slidably mounted on the top of the linear module, and an adapter plate is mounted on the top of the slider. One end of the connecting plate along the first direction is fixedly connected to the connecting slot, and the other end is connected to the adapter plate, for moving the fixed base relative to the base along the second direction via the linear module.

[0006] Two screw-locking mechanisms are symmetrically arranged on the top of the fixing base along the second direction.

[0007] This utility model provides a PCB board screw fastening machine. Two screw-fastening mechanisms are symmetrically arranged on the top of the fixed base along a second direction. This layout allows for the simultaneous fastening of two screws in a single movement, significantly improving work efficiency and shortening the production cycle compared to a single screw-fastening mechanism. The use of a linear module provides high-precision linear motion control. By precisely controlling the drive of the linear module, the fixed base can move accurately along the second direction, enabling the screw-fastening mechanism to accurately position itself at the screw hole on the PCB board, thus improving the screw fastening accuracy.

[0008] Preferably, the displacement module further includes multiple photoelectric sensors, a sensing element, and a mounting slide bar. The mounting slide bar extends along the second direction and is located on the side of the linear module away from the fixed base along the first direction. The multiple photoelectric sensors are spaced apart at the top of the mounting slide bar along the second direction and are slidably connected to the mounting slide bar. One end of the sensing element along the first direction is connected to the adapter plate, and the other end is suspended above the mounting slide bar and correspondingly positioned with the photoelectric sensors.

[0009] Preferably, the displacement module further includes a support plate extending along a third direction and disposed on the other side of the fixed base along the first direction. The bottom of the support plate is provided with the linear guide rail and a base slidably connected to the linear guide rail, and the top is abutted against the screw locking mechanism.

[0010] Preferably, each screw-locking mechanism includes a screwdriver assembly and a locking mechanism. The screwdriver assembly is disposed on one side of the fixing base along the second direction. The locking mechanism is disposed on the top of the fixing base and correspondingly connected to the screw-locking mechanism. The locking mechanism includes a module mounting base, an X-axis displacement module, a first module connecting plate, a Z-axis displacement module, and a second module connecting plate. The module mounting base extends along the first direction and its bottom is connected to the fixing base. The X-axis displacement module extends along the first direction and is disposed on the side of the module mounting base facing the screwdriver assembly along the second direction. One end of the first module connecting plate along the second direction is slidably connected to the X-axis displacement module, and the other end is connected to the Z-axis displacement module. The Z-axis displacement module extends along the third direction. One end of the second module connecting plate along the second direction is slidably connected to the Z-axis displacement module, and the other end is connected to the screwdriver assembly.

[0011] Preferably, the screwdriver assembly includes a guide plate, a guide slider, a motor base, a servo motor, and a screwdriver. Both the guide plate and the screwdriver extend along the third direction. One end of the guide slider along the second direction is connected to the second module connecting plate, and the other end is provided with a slide rail extending along the third direction. One end of the guide slider along the second direction is slidably connected to the slide rail, and the other end is connected to the motor base. The servo motor is located on the top of the motor base, and its drive end passes through the motor base along the third direction and is connected to the top of the screwdriver.

[0012] Preferably, the screwdriver assembly further includes a suction nozzle, an upper sleeve, a connecting flange, a limiting block, a return spring, a threaded sleeve, and a lower sleeve. The connecting flange is correspondingly located at the connection between the motor base and the servo motor drive end. The upper sleeve extends along the third direction and is sleeved on the outside of the screwdriver. The threaded sleeve is connected and fixed to the connecting flange and the top of the upper sleeve, respectively. The lower sleeve extends along the third direction, its top is connected to the upper sleeve, and its bottom is provided with a suction nozzle, which is correspondingly located to the screwdriver along the third direction. The limiting block is located near the upper end of the screwdriver, and the return spring is located between the limiting block and the lower sleeve and sleeved on the screwdriver.

[0013] Preferably, the screwdriver assembly further includes a buffer plate, a guide rod fixing block, a guide rod, a limiting spring, and a spring adjusting block. The buffer plate is disposed on the top of the guide plate, and the guide rod fixing blocks are disposed at both ends of the motor base along the first direction. The guide rod extends along the third direction, with its top connected to the buffer plate and its bottom slidably connected to the guide rod fixing block. The spring adjusting block is sleeved on the guide rod, and the top of the limiting spring is connected to the spring adjusting block, while its bottom is connected to the guide rod fixing block.

[0014] Preferably, the screw-locking mechanism further includes an auxiliary tank chain, a displacement sensor, and a sensor mounting plate. The auxiliary tank chain is located on top of the fixed base and is connected to the X-axis displacement module via a transmission connection. The displacement sensor is located above the servo motor and the guide plate, and is connected to the top of the guide plate via the sensor mounting plate.

[0015] Preferably, the PCB board screw machine further includes a screw feeder, which is located on one side of the screw locking mechanism along the third direction, and has a discharge port at the top for providing screws to be fixed. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment of a PCB board screw machine according to the present invention; Figure 2 This is a rear view of an embodiment of a PCB board screw machine according to the present invention; Figure 3 This is a schematic diagram of the screwdriver assembly of an embodiment of a PCB board screwdriver according to the present invention; In the picture: 1. PCB board screwdriver; 20. Fixing base; 200. Linear guide rail; 21. Base; 22. Linear module; 23. Slider; 24. Adapter plate; 25. Connecting plate; 30. Photoelectric sensor; 31. Sensing plate; 32. Mounting slide bar; 33. Support plate; 40. Module mounting base; 41. X-axis displacement module; 42. First module connecting plate; 43. Z-axis displacement module; 44. Second module connecting plate; 5. Screwdriver assembly; 50. Guide plate 51. Guide slider; 52. Motor base; 53. Servo motor; 54. Screwdriver; 60. Suction nozzle; 61. Upper sleeve; 62. Connecting flange; 63. Threaded sleeve; 64. Lower sleeve; 65. Limit block; 66. Return spring; 70. Buffer plate; 71. Guide rod fixing block; 72. Guide rod; 73. Limit spring; 74. Spring adjusting block; 80. Auxiliary tank chain; 81. Displacement sensor; 82. Sensor fixing plate; 83. Screw feeder. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0018] refer to Figures 1 to 3 , Figure 1 A perspective view of a PCB board screw machine 1 provided in an embodiment of the present invention is shown; Figure 2 The image shows a rear view of a PCB board screw machine 1 provided in an embodiment of the present invention; Figure 3 This diagram illustrates the structure of the screwdriver assembly 5 in a PCB board screwdriver 1 provided by an embodiment of the present invention.

[0019] like Figures 1 to 3 As shown, the technical solution provided in this application is a PCB board screw machine 1, including: a displacement module, including a fixed base 20, a base 21, a linear module 22 and a connecting plate 25, the fixed base 20 along a first direction ( Figure 1 One end (as shown in the X direction) is provided with a connecting slot, and the bottom is provided with multiple linear guides 200, all of which are along the second direction (as shown in the X direction). Figure 1The linear module 22 extends along the Y-direction and is spaced apart along the first direction. The base 21 is located below the fixed base 20 and has a slide rail corresponding to the linear guide rail 200, slidably connected to the linear guide rail 200. The linear module 22 extends along the second direction and is located on one side of the fixed base 20 along the first direction. A slider 23 is slidably mounted on the top of the linear module 22, and an adapter plate 24 is mounted on the top of the slider 23. One end of the connecting plate 25 along the first direction is fixedly connected to the connecting slot, and the other end is connected to the adapter plate 24, used to drive the fixed base 20 to move relative to the base 21 along the second direction via the linear module 22.

[0020] Two screw-locking mechanisms are symmetrically arranged on the top of the fixed base 20 along the second direction.

[0021] This application provides a PCB board screw fastening machine 1, in which two screw fastening mechanisms are symmetrically arranged on the top of the fixed base 20 along a second direction. This layout allows for the simultaneous fastening of two screws in a single movement, significantly improving work efficiency and shortening the production cycle compared to a single screw fastening mechanism. The use of a linear module 22 provides high-precision linear motion control. By precisely controlling the drive of the linear module 22, the fixed base 20 can be moved accurately along the second direction, enabling the screw fastening mechanism to accurately position itself at the screw hole on the PCB board, thus improving the screw fastening accuracy.

[0022] In some embodiments, reference Figures 1 to 3 The displacement module also includes multiple photoelectric sensors 30, sensing plates 31, and mounting slides 32. The mounting slides 32 extend along a second direction and are positioned on the side of the linear module 22 away from the fixed base 20 along a first direction. The multiple photoelectric sensors 30 are spaced apart on top of the mounting slides 32 along the second direction and are slidably connected to the mounting slides 32. One end of the sensing plate 31 along the first direction is connected to the adapter plate 24, and the other end is suspended above the mounting slides 32 and correspondingly positioned to correspond with the photoelectric sensors 30.

[0023] For example, high repeatability positioning accuracy can be achieved through the precise cooperation of photoelectric sensor 30 and sensing plate 31. Even during multiple reciprocating movements, the fixed base 20 can accurately return to the preset position, enabling high-precision detection of the position of the fixed base 20.

[0024] In some embodiments, reference Figures 1 to 3 The displacement module also includes a support plate 33, which is positioned along a third direction ( Figure 1 Extending in the Z direction, and located on the other side of the fixed base 20 along the first direction. The bottom of the support plate 33 is provided with a linear guide rail 200 and a base 21 that is slidably connected to the linear guide rail 200, and the top is abutted against the screw locking mechanism.

[0025] For example, the top of the support plate 33 abuts against the screw-locking mechanism, which can provide stable support for the screw-locking mechanism and prevent the screw-locking mechanism from being displaced or shaking due to the movement of the fixed seat 20 during operation.

[0026] In some embodiments, reference Figures 1 to 3 Each screw-locking mechanism includes a screwdriver assembly 5 and a locking mechanism. The screwdriver assembly 5 is located on one side of the fixed base 20 along the second direction. The locking mechanism is located on the top of the fixed base 20 and is correspondingly connected to the screw-locking mechanism. The locking mechanism includes a module mounting base 40, an X-axis displacement module 41, a first module connecting plate 42, a Z-axis displacement module 43, and a second module connecting plate 44. The module mounting base 40 extends along the first direction and its bottom is connected to the fixed base 20. The X-axis displacement module 41 extends along the first direction and is located on the side of the module mounting base 40 facing the screwdriver assembly 5 along the second direction. One end of the first module connecting plate 42 along the second direction is slidably connected to the X-axis displacement module 41, and the other end is connected to the Z-axis displacement module 43. The Z-axis displacement module 43 extends along the third direction. One end of the second module connecting plate 44 along the second direction is slidably connected to the Z-axis displacement module 43, and the other end is connected to the screwdriver assembly 5.

[0027] For example, the fastening mechanism includes an X-axis displacement module 41 and a Z-axis displacement module 43. This multi-axis displacement module design enables precise movement of the screwdriver assembly 5 in multiple directions. Through the coordinated operation of the X and Z axes, the screwdriver assembly 5 can be precisely positioned to the screw hole location on the PCB board, significantly improving the screw fastening accuracy.

[0028] In some embodiments, reference Figures 1 to 3 The screwdriver assembly 5 includes a guide plate 50, a guide slider 51, a motor base 52, a servo motor 53, and a screwdriver 54. Both the guide plate 50 and the screwdriver 54 extend along a third direction, with one end in a second direction connected to the second module connecting plate 44, and the other end provided with a slide rail extending along the third direction. One end of the guide slider 51 in the second direction is slidably connected to the slide rail, and the other end is connected to the motor base 52. The servo motor 53 is located on the top of the motor base 52, with its drive end passing through the motor base 52 along a third direction and connected to the top of the screwdriver 54.

[0029] For example, the cooperation between the guide plate 50 and the guide slider 51 provides high-precision linear motion guidance. The guide slider 51 slides along a second direction, ensuring smooth and precise movement of the screwdriver 54 in a third direction. This high-precision guiding system can significantly improve the positioning accuracy of the screwdriver 54, ensuring that the screw can be accurately fastened to the predetermined position on the PCB board.

[0030] In some embodiments, reference Figures 1 to 3The screwdriver assembly 5 also includes a suction nozzle 60, an upper sleeve 61, a connecting flange 62, a limiting block 65, a return spring 66, a threaded sleeve 63, and a lower sleeve 64. The connecting flange 62 is correspondingly located at the connection point between the motor base 52 and the drive end of the servo motor 53. The upper sleeve 61 extends along a third direction and is fitted onto the outside of the screwdriver 54. The threaded sleeve 63 is connected and fixed to the top of both the connecting flange 62 and the upper sleeve 61. The lower sleeve 64 extends along a third direction, with its top connected to the upper sleeve 61 and a suction nozzle 60 at its bottom, which is correspondingly positioned to the screwdriver 54 along a third direction. The limiting block 65 is located near the upper end of the screwdriver 54, and the return spring 66 is located between the limiting block 65 and the lower sleeve 64 and fitted onto the screwdriver 54.

[0031] For example, the design of the suction nozzle 60 enables the screwdriver assembly 5 to precisely grip and place screws. The suction nozzle 60 is positioned in a third direction corresponding to the screwdriver 54, ensuring that the screw maintains the correct orientation and position during gripping and placement, thus improving screw-fastening accuracy. The cushioning effect of the return spring 66 reduces damage to the screwdriver 54 caused by impact during screw-fastening, improving the safety and reliability of the equipment.

[0032] In some embodiments, reference Figures 1 to 3 The screwdriver assembly 5 also includes a buffer plate 70, a guide rod fixing block 71, a guide rod 72, a limiting spring 73, and a spring adjusting block 74. The buffer plate 70 is located on top of the guide plate 50, and the guide rod fixing block 71 is located at both ends of the motor base 52 along a first direction. The guide rod 72 extends along a third direction, with its top connected to the buffer plate 70 and its bottom slidably connected to the guide rod fixing block 71. The spring adjusting block 74 is sleeved on the guide rod 72, and the top of the limiting spring 73 is connected to the spring adjusting block 74, while its bottom is connected to the guide rod fixing block 71.

[0033] For example, the cooperation between the buffer plate 70 and the guide rod 72 can provide precise cushioning and positioning functions, ensuring that the screwdriver 54 maintains stable linear motion during movement and reducing positional deviations caused by vibration or impact.

[0034] In some embodiments, reference Figures 1 to 3 The screw-locking mechanism also includes an auxiliary tank chain 80, a displacement sensor 81, and a sensor mounting plate 82. The auxiliary tank chain 80 is located on top of the fixed base 20 and is connected to the X-axis displacement module 41 via a transmission connection. The displacement sensor 81 is located above the servo motor 53 and the guide plate 50, and is connected to the top of the guide plate 50 via the sensor mounting plate 82.

[0035] For example, the addition of displacement sensor 81 can monitor the displacement of screwdriver assembly 5 in real time. Connected to the top of guide plate 50 via sensor mounting plate 82, displacement sensor 81 can accurately detect positional changes of screwdriver assembly 5 in the third direction, providing high-precision positional feedback information to the control system and further improving screw-locking accuracy.

[0036] In some embodiments, reference Figures 1 to 3 The PCB board screw machine 1 also includes a screw feeder 83, which is located on one side of the screw locking mechanism along the third direction and has a discharge port on the top for providing screws to be fixed.

[0037] For example, the addition of the screw feeder 83 enables fully automated screw supply, reducing manual intervention. Operators no longer need to frequently manually place screws, improving the automation level of the production process and reducing errors and fatigue caused by manual operation.

[0038] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A PCB board screw machine, characterized in that, include: A displacement module includes a fixed base, a base, a linear module, and a connecting plate. The fixed base has a connecting slot at one end along a first direction and multiple linear guide rails at its bottom. These linear guide rails extend along a second direction and are spaced apart along the first direction. The base is located below the fixed base and has slide rails corresponding to the linear guide rails, allowing it to slide smoothly in contact with them. The linear module extends along the second direction and is located on one side of the fixed base along the first direction. A slider is slidably mounted on the top of the linear module, and a transition plate is mounted on the top of the slider. One end of the connecting plate along the first direction is fixedly connected to the connecting slot, and the other end is connected to the transition plate, for moving the fixed base relative to the base along the second direction via the linear module. Two screw-locking mechanisms are symmetrically arranged on the top of the fixing base along the second direction.

2. The PCB board screw machine according to claim 1, characterized in that, The displacement module further includes multiple photoelectric sensors, sensing plates, and mounting slides. The mounting slides extend along the second direction and are located on the side of the linear module away from the fixed base along the first direction. The multiple photoelectric sensors are spaced apart on the top of the mounting slides along the second direction and are slidably connected to the mounting slides. One end of the sensing plate along the first direction is connected to the adapter plate, and the other end is suspended above the mounting slides and is correspondingly arranged with the photoelectric sensors.

3. The PCB board screw machine according to claim 2, characterized in that, The displacement module further includes a support plate, which extends along a third direction and is located on the other side of the fixed base along the first direction. The bottom of the support plate is provided with the linear guide rail and a base that is slidably connected to the linear guide rail, and the top is abutted against the screw locking mechanism.

4. The PCB board screw machine according to claim 3, characterized in that, Each screw-locking mechanism includes a screwdriver assembly and a locking mechanism. The screwdriver assembly is disposed on one side of the fixed base along the second direction. The locking mechanism is disposed on the top of the fixed base and is correspondingly connected to the screw-locking mechanism. The locking mechanism includes a module mounting base, an X-axis displacement module, a first module connecting plate, a Z-axis displacement module, and a second module connecting plate. The module mounting base extends along the first direction and its bottom is connected to the fixed base. The X-axis displacement module extends along the first direction and is disposed on the side of the module mounting base facing the screwdriver assembly along the second direction. One end of the first module connecting plate along the second direction is slidably connected to the X-axis displacement module, and the other end is connected to the Z-axis displacement module. The Z-axis displacement module extends along the third direction. One end of the second module connecting plate along the second direction is slidably connected to the Z-axis displacement module, and the other end is connected to the screwdriver assembly.

5. The PCB board screw machine according to claim 4, characterized in that, The screwdriver assembly includes a guide plate, a guide slider, a motor base, a servo motor, and a screwdriver. The guide plate and the screwdriver both extend along the third direction. One end of the guide slider along the second direction is connected to the second module connecting plate, and the other end is provided with a slide rail extending along the third direction. One end of the guide slider along the second direction is slidably connected to the slide rail, and the other end is connected to the motor base. The servo motor is located on the top of the motor base, and its driving end passes through the motor base along the third direction and is connected to the top of the screwdriver.

6. The PCB board screw machine according to claim 5, characterized in that, The screwdriver assembly further includes a suction nozzle, an upper sleeve, a connecting flange, a limiting block, a return spring, a threaded sleeve, and a lower sleeve. The connecting flange is correspondingly located at the connection between the motor base and the servo motor drive end. The upper sleeve extends along the third direction and is sleeved on the outside of the screwdriver. The threaded sleeve is connected and fixed to the top of the connecting flange and the upper sleeve, respectively. The lower sleeve extends along the third direction, with its top connected to the upper sleeve and a suction nozzle at its bottom, which is correspondingly located to the screwdriver along the third direction. The limiting block is located near the upper end of the screwdriver, and the return spring is located between the limiting block and the lower sleeve and sleeved on the screwdriver.

7. The PCB board screw machine according to claim 6, characterized in that, The screwdriver assembly further includes a buffer plate, a guide rod fixing block, a guide rod, a limiting spring, and a spring adjusting block. The buffer plate is located on top of the guide plate, and the guide rod fixing block is located at both ends of the motor base along the first direction. The guide rod extends along the third direction, with its top connected to the buffer plate and its bottom slidably connected to the guide rod fixing block. The spring adjusting block is sleeved on the guide rod, and the top of the limiting spring is connected to the spring adjusting block, while its bottom is connected to the guide rod fixing block.

8. The PCB board screw machine according to claim 7, characterized in that, The screw-locking mechanism also includes an auxiliary tank chain, a displacement sensor, and a sensor mounting plate. The auxiliary tank chain is located on top of the mounting base and is connected to the X-axis displacement module via a transmission connection. The displacement sensor is located above the servo motor and the guide plate and is connected to the top of the guide plate via the sensor mounting plate.

9. The PCB board screw machine according to claim 8, characterized in that, It also includes a screw feeder, which is located on one side of the screw-locking mechanism along the third direction, and has a discharge port at the top for providing screws to be fixed.

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