Multi-station PCB continuous pin inserting device

Abstract

The present application relates to the technical field of electronic component assembly, in particular to a multi-station PCB continuous pin inserting device, which comprises an upper pressing assembly and a lower top assembly, and the upper pressing assembly and the lower top assembly are oppositely arranged and can realize opposite pressing movement. During the inserting operation, the upper pressing assembly and the lower top assembly clamp and press the outer peripheral edge of the PCB board to be inserted from both top and bottom, eliminate the initial gap between the PCB board and the lower top assembly due to warping, maintain the flat state of the PCB board to be inserted, avoid the bending and vibration of the PCB board during the pin inserting process, improve the flatness, stability and positioning accuracy of the PCB board during the inserting process, ensure the matching accuracy of the pin and the socket, and improve the overall inserting quality and operation reliability.

Description

Technical Field

[0001] This invention relates to the field of electronic component assembly technology, and in particular to a multi-station PCB continuous pin insertion device. Background Technology

[0002] PCB pin insertion devices are core automated processing equipment in the field of PCB electronic assembly. They are mainly used to accurately insert various metal pins into pre-set through holes on PCB boards to achieve electrical interconnection and mechanical fixation between PCB boards and external devices. They are widely applicable to batch PCB connector assembly, terminal insertion and other processes.

[0003] The equipment mainly includes a frame, a control system, a pin feeding mechanism, a pin clamping mechanism, a PCB board clamping and positioning mechanism, a motion drive module, and an insertion execution mechanism. During operation, the pin feeding mechanism first feeds the pins, and the pin clamping mechanism stably clamps and positions them; simultaneously, the PCB board clamping and positioning mechanism clamps and positions the PCB board. Then, the control system drives the motion drive module, moving the pin clamping mechanism above the corresponding hole on the PCB board, and the insertion execution mechanism presses the pin into the through-hole of the PCB board. Through the coordinated operation of all components, the core processes of clamping, positioning, and insertion are completed, ensuring the accuracy of the pin position and depth.

[0004] Existing PCB clamping and positioning mechanisms mostly employ a top-rod support structure. A lower top rod provides bottom support and positioning for specific points on the PCB board. During insertion, the lower top rod bears the axial force generated by the downward pressure of the pins. However, due to factors such as the material properties of the PCB, residual stress from processing, and temperature changes, the PCB board is prone to warping deformation. This prevents the lower top rod from forming a uniformly fitted support surface with the bottom of the PCB, resulting in localized gaps. During pin pressing, the PCB board bends due to the lack of effective support in these areas, leading to overall vibration. This vibration not only reduces the alignment accuracy between the pins and the PCB board holes but also easily causes pin bending, PCB surface damage, and hole deformation, severely impacting the yield and structural stability of the PCB board pin assembly. Summary of the Invention

[0005] Therefore, it is necessary to provide a multi-station continuous PCB pin insertion device to address the problem of bending and vibration of the PCB board due to the lack of effective support in certain areas during the insertion process in current PCB pin insertion devices.

[0006] The above objectives are achieved through the following technical solutions: A multi-station PCB continuous pin insertion device includes a crimping assembly, an upper crimping assembly, and a lower push assembly. The crimping assembly is used to clamp the pins and press them into the insertion holes of the PCB board. The upper crimping assembly and the lower push assembly are arranged opposite to each other and can move towards each other. The upper crimping assembly and the lower push assembly are used to clamp and press the outer peripheral edges of the insertion holes on the PCB board during the insertion operation. The upper crimping assembly includes an upper pressure head, and the lower push assembly includes a lower push head. The upper pressure head and the lower push head can simultaneously cover multiple insertion holes on the PCB board to achieve synchronous pressing of the outer peripheral edges of multiple insertion holes.

[0007] Furthermore, a first elastic membrane is provided at one end of the upper pressure head facing the PCB board, and the first elastic membrane is used to make the upper pressure head flexibly contact the PCB board.

[0008] Furthermore, a second elastic membrane is provided at the end of the lower top facing the PCB board, and the second elastic membrane is used to make the lower top contact the PCB board flexibly.

[0009] Furthermore, the lower top assembly also includes a pressure structure, which is used to increase the upward support force of the lower top head on the PCB board when the insertion pressure reaches a preset value.

[0010] Furthermore, the pressure structure includes a sealed chamber and a valve body.

[0011] The upper pressure head, the lower pressure head, and the crimping assembly together form the sealed chamber; during the insertion process, the crimping assembly can compress the sealed chamber.

[0012] The valve body is disposed on the lower top head, and the valve body is used to control the opening and closing of the sealing chamber and the interior of the second elastic membrane.

[0013] During the insertion process, the crimping assembly compresses the sealing chamber to increase its internal pressure and form a high-pressure medium; when the pressure inside the sealing chamber reaches the preset value, the valve body opens, allowing the high-pressure medium to act on the second elastic membrane and drive the second elastic membrane to expand and deform.

[0014] Furthermore, the valve body is a barrier spring sheet fixedly mounted on the inner wall of the lower head; the inner wall of the lower head is provided with a through hole connecting the second elastic membrane and the sealing chamber; during the insertion process, the barrier spring sheet blocks the through hole; when the pressure inside the sealing chamber reaches the preset value, the barrier spring sheet opens the through hole under the action of the high-pressure medium.

[0015] Furthermore, the crimping assembly includes a movable block, a first clamping plate, and a second clamping plate; both the first clamping plate and the second clamping plate are movably disposed on the movable block, and the first clamping plate and the second clamping plate are used to clamp the insert pin; the outer walls of both the first clamping plate and the second clamping plate are rotatably provided with rolling rods, and the rolling rods are in close rolling contact with the inner wall of the upper pressure head.

[0016] Furthermore, the pressing assembly also includes a first hydraulic cylinder, which is used to drive the pressing head to move.

[0017] Furthermore, the lower jack assembly also includes a second hydraulic cylinder, which is used to drive the lower jack head to move.

[0018] The beneficial effects of this invention are: This invention provides a multi-station PCB continuous pin insertion device, including a crimping assembly, an upper crimping assembly, and a lower push assembly. Before the insertion operation begins, the upper crimping assembly and the lower push assembly act on the outer periphery of the PCB board to be inserted through the bidirectional pressing force, forcibly flattening any warped areas of the PCB board. This fundamentally eliminates the gaps formed between the PCB board and the lower push assembly due to warping, ensuring the PCB board is in a flat, fitted, and stable state without any gaps before insertion. During the insertion process, the upper crimping assembly and the lower push assembly continuously maintain a clamping and pressing state on the PCB board, providing continuous, uniform, and reliable support constraints. This effectively resists the downward force generated when the pins are pressed in, preventing the PCB board from bending, vibrating, or shifting in areas with no support or uneven support. Therefore, this significantly improves the flatness, stability, and positioning accuracy of the PCB board during the insertion process, ensures the matching accuracy between the pins and the holes, and improves the insertion quality and operational reliability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a multi-station PCB continuous pin insertion device provided in an embodiment of the present invention; Figure 2 for Figure 1 The front view of the structure shown; Figure 3 for Figure 2 A magnified view of a section at point A in the middle; Figure 4 This is a schematic diagram of a multi-station PCB continuous pin insertion device provided in an embodiment of the present invention. For ease of observation, the frame and the feeding cylinder are omitted. Figure 5 for Figure 4 The front view of the structure shown; Figure 6 for Figure 4 Side view of the structure shown; Figure 7 for Figure 6 Cross-sectional view along the BB direction; Figure 8 for Figure 7 A magnified view of a section at point C; Figure 9 This is a schematic diagram of the lower top head in a multi-station PCB continuous pin insertion device provided in an embodiment of the present invention; Figure 10 for Figure 9 The front view of the structure shown; Figure 11 for Figure 10 A cross-sectional view along the DD direction; Figure 12 for Figure 11 A magnified view of point E when the middle blocking spring sheet blocks the inner through hole of the lower mandrel; Figure 13 for Figure 11 A magnified view of point E when the middle blocking spring opens the inner through hole of the lower top head.

[0020] in: 110. Pin; 120. PCB board; 210. Frame; 220. Operation control panel; 230. Front moving track; 240. Rear moving track; 310. Moving block; 410. Feeding cylinder; 510. Moving block; 520. First clamping plate; 530. Second clamping plate; 540. Drive hydraulic cylinder; 550. Control cylinder; 610. Upper pressure head; 611. First elastic membrane; 620. First hydraulic cylinder; 710. Lower top head; 711. Second elastic membrane; 712. Barrier spring; 720. Second hydraulic cylinder. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] The following reference Figures 1 to 13 This invention describes a multi-station PCB continuous pin insertion device, which includes a frame 210, a moving component, a feeding component, a crimping component, an upper pressing component, and a lower pressing component.

[0025] Specifically, the frame 210 is a rigid frame structure, fixedly placed on the ground or other fixed support surface, providing a stable mounting base for other components. An operation control panel 220 is fixedly installed at the front end of the frame 210, used to set the overall operating parameters of the device, monitor the operating status, and execute input / output commands. A front moving track 230 and a rear moving track 240 are fixedly installed at the left and right ends of the frame 210, respectively. The front moving track 230 is used for the directional transport of the PCB board 120 to the insertion work area, and the rear moving track 240 is used for the directional removal of the PCB board 120 after insertion.

[0026] The moving assembly includes a moving block 310 and a drive cylinder. The moving block 310 is positioned between the front moving track 230 and the rear moving track 240, forming a fixed sliding connection with both tracks to ensure smooth transport of the PCB board 120. The moving block 310 is movably connected to the frame 210 and is used to stably clamp and fix the edge of the PCB board 120. The drive cylinder is fixedly mounted on the frame 210 and is used to drive the movement of the moving block 310 to achieve the station change of the PCB board 120, ensuring that the PCB board 120 can be accurately moved to the preset insertion station.

[0027] The feeding assembly includes a feeding cylinder 410, which is fixedly installed on the frame 210. The pins 110 to be inserted are placed in the feeding cylinder 410 in an orderly manner. The feeding cylinder 410 can deliver the pins 110 to the insertion execution area in a directional manner according to a preset program.

[0028] The crimping assembly includes a movable block 510, a first clamping plate 520, a second clamping plate 530, a control cylinder 550, and a drive hydraulic cylinder 540. The movable block 510 is movably mounted on the frame 210. The first clamping plate 520 and the second clamping plate 530 are movably mounted on the movable block 510, and can perform opening and closing actions by moving closer to each other and further apart. The control cylinder 550 is fixedly mounted on the movable block 510, and drives the first clamping plate 520 and the second clamping plate 530 to complete the opening and closing actions, thereby achieving stable clamping and reliable release of the insert 110. The hydraulic cylinder 540 is fixedly installed on the frame 210. The hydraulic cylinder 540 drives the moving block 510 to move back and forth between the picking position of the pin 110 and the insertion position of the PCB board 120. The moving block 510 drives the first clamping plate 520 and the second clamping plate 530 to move synchronously, and completes the picking, conveying and insertion of the pin 110 in sequence, ensuring that the pin 110 is accurately pressed into the insertion hole of the PCB board 120.

[0029] The pressing assembly includes an upper pressing head 610 and a first hydraulic cylinder 620. The upper pressing head 610 has a hollow structure, and its hollow inner cavity provides space for the insertion of the first clamping plate 520 and the second clamping plate 530. After the first clamping plate 520 and the second clamping plate 530 complete their merging action, they can be smoothly inserted into the interior of the upper pressing head 610. The lower end of the upper pressing head 610 is positioned facing the PCB board 120, and the lower contour of the upper pressing head 610 can simultaneously cover the outer periphery of multiple insertion holes to achieve a covering constraint of the insertion area. A first elastic membrane 611 is fixedly provided at the lower end of the upper pressing head 610. The first elastic membrane 611 is made of elastic material and is used to achieve flexible adhesion and pressing between the upper pressing head 610 and the upper surface of the PCB board 120, avoiding damage to the PCB board 120 caused by rigid contact, while ensuring the uniformity and stability of the pressing force of the upper pressing head 610 on the PCB board 120. The first hydraulic cylinder 620 is fixedly installed on the frame 210. The first hydraulic cylinder 620 is used to drive the upper pressure head 610 to reciprocate in the vertical direction so as to realize the pressing operation of the upper pressure head 610 on the upper surface of the PCB board 120.

[0030] The lower support assembly includes a lower support head 710 and a second hydraulic cylinder 720. The upper end of the lower support head 710 faces the PCB board 120, and the contour of the upper end of the lower support head 710 matches the contour of the lower end of the upper pressure head 610. The lower support head 710 and the upper pressure head 610 together achieve stable clamping of the outer periphery of the insertion hole to be inserted. The upper end of the lower support head 710 is provided with an upward-opening relief groove, which provides space for the insertion action of the pin 110. A second elastic membrane 711 is fixedly provided on the upper end of the lower support head 710. The second elastic membrane 711 is made of elastic material and is used to achieve flexible fit and support between the lower support head 710 and the lower end face of the PCB board 120, avoiding damage to the PCB board 120 caused by rigid contact, while ensuring the uniformity and stability of the support of the lower support head 710 to the PCB board 120. The second hydraulic cylinder 720 is fixedly installed on the frame 210. The second hydraulic cylinder 720 is used to drive the lower top head 710 to reciprocate in the vertical direction so as to realize the supporting operation of the lower top head 710 on the lower end face of the PCB board 120.

[0031] After the PCB board 120 moves to the preset insertion station, the first hydraulic cylinder 620 drives the upper pressure head 610 to move downward, and the second hydraulic cylinder 720 drives the lower top head 710 to move upward. The upper pressure head 610 and the lower top head 710 form a bidirectional pressure on the area of ​​the PCB board 120 to be inserted. The first elastic membrane 611 at the lower end of the upper pressure head 610 flexibly adheres to the upper surface of the PCB board 120, and the second elastic membrane 711 at the upper end of the lower top head 710 flexibly adheres to the lower surface of the PCB board 120, thus completing the pre-pressing and flatness correction of the area of ​​the PCB board 120 to be inserted.

[0032] The control cylinder 550 drives the first clamping plate 520 and the second clamping plate 530 to complete the merging action, and the first clamping plate 520 and the second clamping plate 530 form a stable clamp for the pin 110. Subsequently, the drive hydraulic cylinder 540 drives the moving block 510 to move downward. The moving block 510 drives the first clamping plate 520 and the second clamping plate 530 holding the pin 110 to move downward synchronously along the hollow inner cavity of the upper pressure head 610. The pin 110 passes through the hollow area of ​​the upper pressure head 610 and the insertion hole of the PCB board 120, and extends into the clearance groove of the lower top head 710, completing the insertion operation between the pin 110 and the PCB board 120.

[0033] After the insertion operation is completed, the first hydraulic cylinder 620 drives the upper pressure head 610 to reset upward, and the second hydraulic cylinder 720 drives the lower top head 710 to reset downward. The upper pressure head 610 and the lower top head 710 release the bidirectional pressure on the PCB board 120.

[0034] Therefore, the bidirectional pressing action of the upper pressure head 610 and the lower top head 710 keeps the area of ​​the PCB board 120 to be inserted flat, eliminating the initial gap between the PCB board 120 and the lower top head 710 before insertion, and preventing the PCB board 120 from deforming and warping due to local suspension, thus avoiding vibration. At the same time, the first elastic membrane 611 and the second elastic membrane 711 provide flexible clamping and uniform force application to the PCB board 120, ensuring the structural stability and positional accuracy of the PCB board 120 throughout the insertion process.

[0035] Furthermore, the pin 110 adopts a fisheye pin structure, and the insertion section of the pin 110 is provided with an elastic expansion portion. The lateral dimension of the elastic expansion portion is larger than the inner diameter of the socket on the PCB board 120, forming an interference fit between the pin 110 and the socket. The elastic expansion portion of the pin 110 contracts under pressure during insertion and elastically returns to its original position after insertion, tightly expanding and connecting with the inner wall of the socket to achieve a stable mechanical connection and electrical conduction. The interference fit between the pin 110 and the socket will generate a momentary increase in axial resistance and radial compressive force during insertion, which can easily cause bending deformation and vibration of the PCB board 120, thereby reducing insertion accuracy and structural stability. Based on this, the lower top assembly also includes a pressure-enhancing structure.

[0036] Specifically, the pressure structure includes a sealed chamber and a valve body.

[0037] Both the first clamping plate 520 and the second clamping plate 530 have rotatably mounted rolling rods on their outer walls, which form a tight rolling contact with the inner wall of the upper pressure head 610. During the insertion operation, the first clamping plate 520, the second clamping plate 530, the upper pressure head 610, the lower top head 710, and the PCB board 120 together form a sealed chamber. The downward movement of the first clamping plate 520 and the second clamping plate 530 inside the upper pressure head 610 directly compresses the volume of the sealed chamber.

[0038] The valve body is a blocking spring 712 fixedly mounted on the inner wall of the lower head 710. The lower end of the blocking spring 712 is fixedly connected to the inner wall of the lower head 710, and the upper end is a free end. The inner wall of the lower head 710 is provided with a through hole connecting the second elastic membrane 711 and the sealing chamber.

[0039] During insertion, the barrier spring 712 presses tightly against the wall of the through hole under its own elastic force, achieving stable sealing of the through hole. The first clamping plate 520 and the second clamping plate 530 move downward within the upper pressure head 610, compressing the sealing chamber and continuously increasing the internal pressure to form a high-pressure medium.

[0040] As the pin 110 continues to press down, the pressure inside the sealed chamber continues to rise. Under the pressure, the barrier spring 712 gradually undergoes elastic deformation, but does not cross the wall of the through hole. When the pressure reaches a preset value, the high-pressure medium acts on the barrier spring 712, causing it to overcome its own elasticity and instantly cross the wall of the through hole, thus opening the through hole. At this time, the interior of the second elastic membrane 711 is connected to the sealed chamber. The high-pressure medium enters the second elastic membrane 711 and causes it to expand and deform rapidly, thereby increasing the upward support force on the PCB board 120 to resist the downward pressure applied to the PCB board 120 during the insertion of the pin 110, while reducing the reverse impact caused by the sudden change in support force. Thus, the variable force load during the insertion process is offset, significantly reducing the bending deformation and vibration amplitude of the PCB board 120 during the insertion process, protecting the structural integrity of the PCB board 120 and the components on it.

[0041] After the insertion operation is completed, the upper pressure head 610 and the lower top head 710 reset, releasing the bidirectional pressure on the PCB board 120. At this time, the high-pressure medium still remains inside the second elastic membrane 711. After the lower top head 710 moves downward and disengages from the PCB board 120, a pressure difference is formed inside and outside the second elastic membrane 711. This pressure difference drives the barrier spring 712 to overcome its own elasticity again, pass over the hole wall of the through hole and deflect towards the inside of the lower top head 710, so that the second elastic membrane 711 is connected to the external environment, and the high-pressure medium inside the second elastic membrane 711 is discharged outward, completing the pressure relief and retraction. Subsequently, under the action of its own elastic restoring force, the barrier spring 712 presses tightly against the hole wall again, realizing the re-sealing of the through hole and providing a stable sealing basis for the next insertion operation.

[0042] Specifically, during the insertion of the pin 110, the first clamping plate 520 and the second clamping plate 530 move downwards along the inner wall of the upper pressure head 610, continuously compressing the internal volume of the sealed chamber, causing the gas inside the sealed chamber to be compressed into a high-pressure airflow. This high-pressure airflow flows directionally from the sealed chamber to the insertion hole area of ​​the PCB board 120, forming a stable airflow pressure field around the insertion hole. At the instant before the pin 110 is fully inserted into the insertion hole, the high-pressure airflow in the sealed chamber passes through the gap between the pin 110 and the insertion hole from top to bottom, blowing away any residual metal debris and other impurities inside the insertion hole, thus cleaning the inner wall of the insertion hole and ensuring the fitting accuracy between the pin 110 and the insertion hole.

[0043] The sealed chamber is a closed space formed by the upper pressure head 610, the lower top head 710, the first clamping plate 520, the second clamping plate 530 and the PCB board 120. Airflow and debris are confined within this closed space, and metal debris will not splash outward, fundamentally reducing the risk of short circuit caused by debris and improving the electrical safety and structural stability of the insertion operation.

[0044] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A multi-station PCB continuous pin insertion device, characterized in that, It includes a crimping assembly, an upper crimping assembly, and a lower push assembly; the crimping assembly is used to clamp the pin and press it into the insertion hole of the PCB board; the upper crimping assembly and the lower push assembly are arranged opposite to each other and can move towards each other, and the upper crimping assembly and the lower push assembly are used to clamp and press the outer peripheral edge of the insertion hole on the PCB board from top to bottom during the insertion operation; The upper pressing component includes an upper pressing head, and the lower pressing component includes a lower pressing head. The upper pressing head and the lower pressing head can simultaneously cover multiple insertion holes on the PCB board to achieve synchronous pressing of the outer peripheral edges of multiple insertion holes to be inserted. A second elastic membrane is provided at one end of the lower top facing the PCB board, and the second elastic membrane is used to make the lower top flexibly contact the PCB board; The lower push assembly also includes a pressure structure, which is used to increase the upper push support force of the lower push head on the PCB board when the insertion pressure reaches a preset value; The pressure structure includes a sealed chamber and a valve body; The upper pressure head, the lower top head, and the crimping assembly together enclose the sealed chamber; during the insertion process, the crimping assembly can compress the sealed chamber; The valve body is disposed on the lower top head, and the valve body is used to control the opening and closing of the sealing chamber and the interior of the second elastic membrane; During the insertion process, the crimping assembly compresses the sealing chamber to increase its internal pressure and form a high-pressure medium; when the pressure inside the sealing chamber reaches the preset value, the valve body opens, allowing the high-pressure medium to act on the second elastic membrane and drive the second elastic membrane to expand and deform.

2. The multi-station PCB continuous pin insertion device according to claim 1, characterized in that, The upper pressure head is provided with a first elastic membrane at one end facing the PCB board, and the first elastic membrane is used to make the upper pressure head flexibly contact the PCB board.

3. The multi-station PCB continuous pin insertion device according to claim 1, characterized in that, The valve body is a barrier spring sheet fixedly installed on the inner wall of the lower head; the inner wall of the lower head is provided with a through hole connecting the second elastic membrane and the sealing chamber; during the insertion process, the barrier spring sheet blocks the through hole; when the pressure inside the sealing chamber reaches the preset value, the barrier spring sheet opens the through hole under the action of the high pressure medium.

4. The multi-station PCB continuous pin insertion device according to claim 1, characterized in that, The crimping assembly includes a movable block, a first clamping plate, and a second clamping plate; both the first clamping plate and the second clamping plate are movably mounted on the movable block, and are used to clamp the insertion pin; the outer walls of both the first clamping plate and the second clamping plate are rotatably provided with rolling rods, which are in close rolling contact with the inner wall of the upper pressure head.

5. The multi-station PCB continuous pin insertion device according to claim 1, characterized in that, The pressing assembly also includes a first hydraulic cylinder, which is used to drive the pressing head to move.

6. The multi-station PCB continuous pin insertion device according to claim 1, characterized in that, The lower push assembly also includes a second hydraulic cylinder, which is used to drive the lower push head to move.

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