Apparatus and method for loading a male shaft into a profiled array of contact elements

Abstract

The application discloses a device and method for installing convex shafts into special-shaped row-mounted contact pieces, and belongs to the technical field of precision assembly. The device comprises a bottom plate, a vertical plate, a mounting plate that can move up and down, a support seat with a supporting structure, a support shaft, and at least one pair of spring sheets in inverted V-shaped structure. The support shaft is driven to reciprocate by the lifting of the mounting plate, so as to be clamped into or separated from the inverted V-shaped structure of the spring sheet, thereby switching the tips of the at least one pair of spring sheets between the open and closed states. During assembly, the convex shaft is first placed on the support seat, and then the mounting plate is lowered to close the spring sheet; subsequently, the product shell is placed to make the tips of the spring sheet inserted between the contact piece pins; finally, the mounting plate is lifted, the spring sheet is opened by the convex shaft, and the contact piece pins are expanded synchronously, so that the convex shaft is smoothly guided into the cavity to complete the assembly. The application realizes the precise guidance and stress control of the convex shaft assembly, effectively prevents the deformation of the pins, and improves the assembly efficiency and quality consistency.

Description

Technical Field

[0001] This invention relates to the field of medical product assembly equipment technology, and in particular to an apparatus and method for inserting a convex shaft into a non-circularly arranged contact component. Background Technology

[0002] Connectors with male shafts are widely used in the medical product field. Their assembly quality is directly related to the signal transmission stability and operational reliability of medical equipment. The assembly process of male shafts and irregularly shaped contact parts is the core link that determines the performance of this type of connector and even the overall medical product.

[0003] In this assembly process, the connector to be assembled includes a product housing 102, two sets of irregularly shaped contact parts 101, and a pair of meshing first cams 1031 and second cams 1032. The assembly relationship of each component is as follows: Figures 1 to 2 As shown: Two sets of irregularly shaped contact elements 101 are each composed of multiple contacts with slender leads arranged in rows. The leads of the two sets of contacts are positioned opposite each other, forming a narrow gap between them in their natural state, collectively enclosing an internal cavity for the insertion of the convex shaft 103. The two sets of irregularly shaped contact elements 101 must be forcibly connected to the product housing 102 to ensure the initial position stability of the irregularly shaped contact elements 101 inside the product housing 102. The first convex shaft 1031 and the second convex shaft 1032 must maintain a gear meshing state throughout the assembly process and ultimately be precisely inserted into the internal cavity enclosed by the two sets of irregularly shaped contact elements 101. Because medical products have extremely high requirements for signal transmission accuracy and component fit stability, after assembly, the positional tolerance of the irregularly shaped contact elements 101 must be strictly guaranteed to be within the preset tolerance range. Once the positional tolerance is exceeded, it will directly lead to abnormal connector signal transmission, or even cause medical equipment malfunction, affecting the normal operation of diagnosis and treatment.

[0004] However, in existing technologies, this core assembly process relies entirely on manual operation and lacks dedicated auxiliary equipment, resulting in numerous intractable technical challenges during production, as follows:

[0005] (1) The assembly efficiency is extremely low: When assembling manually, workers need to align the positions of the irregularly arranged contact parts 101 and the convex shaft 103 one by one, and need to repeatedly adjust to try to make the irregularly arranged contact parts 101 cross the convex shaft 103. The whole process has no auxiliary positioning structure and relies entirely on the operator's skill level, which makes it difficult to meet the needs of mass production.

[0006] (2) The contact is prone to deformation: The pins of the irregularly arranged contact 101 have a slender structure. During manual assembly, workers cannot directly observe the assembly state inside the product housing 102. They can only judge the relative position of the irregularly arranged contact 101 and the convex shaft 103 based on experience. This makes it easy for the irregularly arranged contact 101 to collide or be squeezed with the convex shaft 103 during the assembly process. At the same time, manual operation cannot ensure that the relative positions of the two ends of the irregularly arranged contact 101 and the convex shaft 103 are always consistent, which makes the force on the two ends of the irregularly arranged contact 101 uneven, further aggravating the deformation problems such as bending and offset of the pins.

[0007] (3) Poor product quality consistency: Since manual assembly relies on workers' experience, different workers have different operating techniques and strengths. Even the same worker's operating state is difficult to maintain stability at different times. As a result, the position tolerance of the irregularly arranged contact 101 in the assembled product fluctuates greatly. Some products directly affect the electrical connection performance due to the position tolerance exceeding the tolerance, which cannot meet the high requirements of medical products for reliability and stability. In addition, the deformation of the irregularly arranged contact 101 may also cause the meshing accuracy of the convex shaft 103 to decrease, causing abnormal noise and jamming during product operation. In severe cases, it may even shorten the product's service life.

[0008] (4) High operational threshold: This assembly process requires workers to have extremely high skill levels. New workers need to undergo long-term training to master the basic operating methods, which not only increases the company's labor costs, but also causes fluctuations in production stability due to personnel turnover.

[0009] In summary, traditional manual assembly methods can no longer meet the requirements of medical products for assembly efficiency, quality accuracy, and stability. There is an urgent need to design a special assembly device that can achieve precise positioning and assist in force balance in order to solve the above-mentioned technical pain points and ensure the assembly quality and production efficiency of connectors with convex shafts. Summary of the Invention

[0010] To address the problems of low efficiency, easy deformation of contact parts, and poor quality consistency in the manual assembly of cam shafts and irregularly shaped contact parts in the prior art, the present invention aims to provide a device and method for installing cam shafts into irregularly shaped contact parts. Through structural design, it achieves auxiliary positioning and force balance control in the assembly process, thereby improving assembly efficiency and product quality.

[0011] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0012] On one hand, the present invention discloses an apparatus for installing a convex shaft into a non-circularly arranged contact member, for assembling the convex shaft into a non-circularly arranged contact member disposed within a product housing, comprising:

[0013] Base plate;

[0014] Four uprights are arranged on the base plate in the form of a rectangular frame;

[0015] The mounting plate can move up and down relative to the upright plate;

[0016] A pair of support seats are symmetrically fixed on the mounting plate. Each support seat is provided with a support structure for supporting the convex shaft. At least one support shaft is connected between the pair of support seats.

[0017] At least one pair of spring sheets, the number of pairs of spring sheets, the number of support shafts and the number of convex shafts are all the same, the spring sheets are set on the upright plate by spring sheet mounting blocks, and the two spring sheets in each pair are elastic elements with the root fixed and the middle bent, and their two tips are close to each other in the natural state, forming an inverted V-shaped structure with the opening facing down and the tip facing up.

[0018] The up-and-down movement of the mounting plate drives at least one support shaft to reciprocate vertically, enabling the at least one support shaft to alternately engage and disengage from the inverted V-shaped structure. Through the engaging and disengaging actions of the at least one support shaft, at least one pair of spring tips are driven to switch between an open and closed state. The opening and closing actions of the at least one pair of spring tips are used to sequentially complete the entire assembly process during assembly, including guiding the convex shaft in, expanding the pins of the irregularly arranged contact parts, inserting the convex shaft into the cavity formed by the irregularly arranged contact parts, and unloading the finished product.

[0019] Furthermore, it also includes a guiding mechanism, which includes a linear bearing mounted on the mounting plate and a guide post fixed to the base plate and extending through the linear bearing. A compression spring is sleeved on the guide post, and the compression spring is located between the linear bearing and the base plate. The mounting plate moves up and down along the guide post via the linear bearing.

[0020] Furthermore, it also includes a limiting mechanism for limiting the vertical travel of the mounting plate.

[0021] Furthermore, the limiting mechanism includes a limiting ring disposed at the upper end of the guide post and a limiting screw disposed on the screw mounting block. The screw mounting block is disposed on the base plate, and the vertical travel of the mounting plate is between the limiting ring and the limiting screw.

[0022] Furthermore, it also includes a limiting block, and the upright plate cooperates with the limiting block to form a cavity that can position the product housing, which is used to restrict the movement of the product housing after it is placed in, and to ensure that the irregularly arranged contact parts in the product housing are aligned with the tip of the spring sheet.

[0023] Furthermore, the upright plate is provided with a limiting protrusion to limit the vertical displacement of the product shell.

[0024] Furthermore, the mounting plate is provided with a through groove, and four upright plates are disposed in the through groove.

[0025] Furthermore, the mounting plate is connected to a drive component that drives it to move up and down. The drive component is a manually operated handle or an automated drive element.

[0026] Furthermore, the cam shaft includes a first cam shaft and a second cam shaft that mesh with each other.

[0027] Furthermore, the supporting structure is a slot for accommodating the first and second cam shafts in a meshing state.

[0028] Furthermore, the spring sheet is fixed to the spring sheet mounting block by a spring sheet positioning pin, and the spring sheet mounting block is mounted on the upright plate.

[0029] On the other hand, the present invention discloses a method for assembling shafts of irregularly shaped contact members using the above device, comprising the following steps:

[0030] S1. In the initial state, the support shaft is located at the entrance of at least one pair of spring sheet inverted V-shaped structure, so that the tips of at least one pair of spring sheets are kept open to form an flared channel; the convex shaft is placed on the support structure of the support seat;

[0031] S2. Drive the mounting plate downward, causing the support shaft and the convex shaft to move downward synchronously, so that the support shaft and the convex shaft are inserted into the inverted V-shaped structure, and the tips of at least one pair of spring plates close due to the loss of support and their own elasticity.

[0032] S3. Place the product housing pre-installed with irregularly shaped contact elements into the positioning cavity formed by the upright plate and the limiting block, so that the tips of at least one pair of spring plates in the closed state are inserted between the pins of the irregularly shaped contact elements.

[0033] S4. Drive the mounting plate upward, causing the support shaft and the convex shaft to move upward synchronously; during the upward process, the convex shaft contacts and opens the tip of the spring plate, and the tip of the spring plate expands the pins of the irregularly shaped assembly contact to form an assembly channel, and guides the convex shaft into the cavity of the irregularly shaped assembly contact until it is assembled in place.

[0034] S5. Drive the mounting plate downwards to close the tip of the spring sheet and remove it from between the pins, and then take out the assembled finished product.

[0035] Beneficial effects:

[0036] This invention, through the coordinated design of the device structure and assembly method, has the following significant advantages compared to traditional manual assembly:

[0037] (1) The device of the present invention constructs a structured positioning system through components such as a base plate, a vertical plate, and a limiting block, eliminating the need for repeated manual adjustments to the positions of irregularly shaped contact parts and the cam shaft. At the same time, the mounting plate, as a linkage carrier, can synchronously drive the support base, support shaft, and cam shaft to move, realizing "one-time drive to complete multiple assembly actions", greatly reducing the tediousness of assembly operations and improving overall assembly efficiency. In addition, the operation of the device does not rely on the long-term accumulated experience of workers, and new operators can quickly master the usage method, further ensuring the efficiency and stability of mass production.

[0038] (2) From the perspective of structural design, each pair of spring plates adopts an inverted V-shaped structure and is precisely positioned by the spring plate mounting block to ensure that the force exerted by the spring plates on the pins of the irregularly arranged contact parts is uniform; the guide mechanism composed of the guide column and the linear bearing ensures that the mounting plate drives the cam shaft to make a smooth linear movement, avoiding unexpected collisions between the cam shaft and the irregularly arranged contact parts. From the perspective of assembly mechanism, the device adopts the assembly logic of "first fixing the irregularly arranged contact parts, then installing the cam shaft", and the pins of the irregularly arranged contact parts are controllably opened by the elastic deformation of the spring plates to provide a preset channel for the cam shaft; compared with the forced installation method that lacks guidance in traditional manual assembly, this design can avoid unexpected squeezing or collision between the pins of the irregularly arranged contact parts and the cam shaft, fundamentally solving the deformation problems such as bending and offset of the pins of the irregularly arranged contact parts caused by uneven force and ambiguous positioning in manual operation.

[0039] (3) The device of the present invention ensures the uniformity of assembly benchmarks through a multi-dimensional positioning structure. The limiting block and the upright plate cooperate to limit the horizontal displacement of the product shell, the limiting protrusion on the upright plate limits the vertical displacement of the product shell, and the slot of the support base fixes the posture of the cam shaft, so that the relative position of the irregularly arranged contact parts and the cam shaft remains consistent during each assembly. At the same time, the elastic deformation law of the spring sheet is stable, and the amplitude and force of opening the pins of the irregularly arranged contact parts each time can be controlled, avoiding assembly deviations caused by differences in force and technique during manual operation, ensuring that the position accuracy of the contact parts and the meshing accuracy of the cam shaft of all assembled products meet the standards, and significantly improving the consistency of product quality.

[0040] (4) The device of the present invention simplifies operation through drive components such as handles. Operators only need to apply a small force to drive the mounting plate to move. There is no need to manually and precisely control the fit between the irregularly arranged contact parts and the convex shaft, which greatly reduces the intensity of operation and the skill threshold. In addition, the components of the device are detachable (such as spring plates fixed by positioning pins and adjustable limit screws), which facilitates component maintenance and replacement and reduces equipment failure rate. At the same time, the improved quality consistency can reduce the scrap rate, reduce raw material waste, and reduce the overall production cost from the perspective of long-term use. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the connector to be installed in this invention.

[0043] Figure 2 yes Figure 1 Sectional view at point AA.

[0044] Figure 3 This is a front view of the device.

[0045] Figure 4 This is the right view of the device.

[0046] Figure 5 This is a top view of the device.

[0047] Figure 6 This is the left view of the device.

[0048] Figure 7 yes Figure 3 Sectional view at point BB.

[0049] Figure 8 yes Figure 7 Enlarged view of point I in the middle.

[0050] Figure 9 This is a schematic diagram of a linear bearing.

[0051] Figure 10 This is a schematic diagram of the mounting plate.

[0052] Figure 11 This is a schematic diagram of a screw mounting block.

[0053] Figure 12 This is a schematic diagram of the base plate.

[0054] Figure 13 This is a schematic diagram of the spring sheet, spring sheet mounting block, and locating pin before assembly.

[0055] Figure 14 This is a schematic diagram of the support base and support shaft before assembly.

[0056] Figure 15 This is a schematic diagram of the upright panel.

[0057] Figure 16 This is a schematic diagram illustrating the operating principle of installing the cam shaft using the device of the present invention.

[0058] The diagram shows the following markings: 1. Connector; 101. Irregularly shaped contact element; 102. Product housing; 103. Protruding shaft; 1031. First protruding shaft; 1032. Second protruding shaft; 2. Base plate; 201. Guide post mounting hole; 202. Vertical plate mounting hole; 3. Screw mounting block; 4. Limiting screw; 5. Mounting plate; 501. Linear bearing mounting hole; 502. Support seat mounting hole; 6. Spring plate mounting block; 601. Slot; 602. Second mounting hole; 7. Locating pin; 8. Spring plate; 801. First mounting hole; 9. Limiting block; 10. Vertical plate; 1001. Limiting protrusion; 11. Limiting ring; 12. Guide post; 13. Handle; 14. Linear bearing; 15. Compression spring; 16. Support shaft; 17. Support seat; 1701. Support shaft mounting hole; 1702. Slot. Detailed Implementation

[0059] The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0060] In the description of this invention, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0061] It should be noted that relational terms such as "first" and "second" are used merely 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. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0062] This invention provides a device for installing a convex shaft 103 into a non-circularly arranged contact component. The device assembles the convex shaft 103 into the non-circularly arranged contact component 101 within a product housing 102. Each core component has a clearly defined function and works in concert. The base plate 2 serves as the fixed reference and load-bearing foundation for the entire device, ensuring the stability of all components after assembly. Four upright plates 10 are precisely fixed to the base plate 2 with bolts, forming a regular vertical support frame, providing a vertical positioning reference for subsequent component installation. An mounting plate 5 is movably disposed on the outside of this vertical support frame, allowing for smooth movement along the height of the upright plates 10, serving as a movable load-bearing carrier for the support base 17. The support base 17 is fixed to the mounting plate 5 and supports the convex shaft 103 to be assembled, and a pair of supports... The support bases 17 are connected by a support shaft 16 to form a linkage system of "mounting plate-support base-support shaft-cam shaft", ensuring that the mounting plate 5 can move synchronously and drive the cam shaft 103 and the support shaft 16 to move precisely. At the same time, the upright plate 10 is also equipped with a spring plate mounting block 6, which is equipped with at least one pair of spring plates 8 (the number of pairs of spring plates 8 is the same as the number of cam shafts included in the cam shaft 103). With the movement of the support shaft 16 or the cam shaft 103, the pins of the irregularly arranged contact parts 101 can be opened in a controllable manner. With the help of the guide mechanism, the limiting mechanism and the limiting block 9, the motion accuracy, the stroke range and the positioning of the product housing 102 are guaranteed respectively, and finally the efficient and precise assembly of the cam shaft 103 and the irregularly arranged contact parts 101 is achieved.

[0063] The following is a reference to the appendix. Figure 1-16 Taking the cam shaft 103, which includes a first cam shaft 1031 and a second cam shaft 1032 that mesh with each other, and the spring plate mounting block 6, which is equipped with two pairs of spring plates 8, as an example, the specific structure and connection relationship of each component are explained in detail.

[0064] The base plate 2 is a rectangular plate structure, serving as the basic load-bearing unit of the entire device and providing a stable and uniform installation reference surface for all upper components. Guide post mounting holes 201 and upright plate mounting holes 202 are precisely drilled on the base plate 2 according to the preset assembly positions: the guide post mounting holes 201 are used to fix the guide posts 12 of the guiding mechanism, and the upright plate mounting holes 202 are used to fix the four upright plates 10. The diameter tolerance and position tolerance of all mounting holes are strictly controlled to ensure that the subsequent assembly of the guide posts 12 and upright plates 10 meets the overall precision requirements of the device, avoiding misalignment in subsequent assembly due to reference deviations.

[0065] The four upright plates 10 are all long strip-shaped metal plates (material same as the base plate 2). Based on the size requirements of the vertical support frame, they are fixed one-to-one with the upright plate mounting holes 202 on the base plate 2 using bolts. The four upright plates 10 are located at the four corners of the rectangular frame, forming a structurally stable vertical support frame. The height of the upright plates 10 is designed according to the assembly stroke of the convex shaft 103, ensuring that the mounting plate 5 can cover the entire assembly process when moving up and down. A limiting protrusion 1001 is provided on the side of the upright plate 10 near the assembly area of ​​the product housing 102. The height of the limiting protrusion 1001 is adapted to the assembly height of the product housing 102, and is used to abut against the lower end face of the product housing 102 during assembly to limit its vertical displacement and prevent the product housing 102 from moving up and down during assembly, affecting the positioning accuracy. A spring plate mounting block 6 is also mounted on the upright plate 10, and a spring plate 8 is mounted on the spring plate mounting block. This, in conjunction with the movement of the support shaft 16, allows for the controllable opening of the pins of the irregularly arranged contact parts 101.

[0066] Mounting plate 5 is a rectangular plate adapted to the shape of the vertical support frame. It is movably mounted on the outside of the vertical support frame enclosed by four upright plates 10. Preferably, the edge of the plate is in contact with the outer wall of the upright plate 10, ensuring that the mounting plate 5 can only move up and down along the height direction of the upright plate 10 without any horizontal offset. One or both sides of the mounting plate 5 can be connected to a drive component (such as a manually operated handle 13, or an automated drive component such as a cylinder or servo motor). The mounting plate 5 can be moved along the upright plate 10 by applying external force through the drive component. The upper surface of the mounting plate 5 is also provided with a support mounting hole 502 for fixing the support base 17 with bolts. The position of the support mounting hole 502 is designed according to the symmetrical distribution requirements of the support base 17 to ensure that the support base 17 can stably support the convex shaft 103 after it is fixed.

[0067] A pair of support bases 17 are block-shaped components with identical structures. They are symmetrically fixed to the upper surface of the mounting plate 5 by bolts passing through the support base mounting holes 502 on the mounting plate 5, and are located between two opposing vertical plates. The axis of symmetry of the pair of support bases 17 coincides with the central axis of the mounting plate 5, ensuring that the support bases 17 are subjected to balanced forces and avoiding tilting of the cam shaft 103 due to unilateral forces. The upper end face of each support base 17 is provided with a slot 1702 for supporting the cam shaft 103: the width of the slot (i.e., the plate thickness of the support base 17) along the symmetrical distribution direction of the support base 17 is designed to "stablely support the cam shaft 103 without obstructing the assembly path of the cam shaft 103 and the irregularly arranged contact parts 101"; the length of the slot perpendicular to the symmetrical distribution direction of the support base 17 is designed to be slightly larger than the diameter of the cam shaft 103, which ensures that the cam shaft 103 does not wobble after being placed in the mounting plate 5, and also avoids the cam shaft 103 from shifting during the movement of the mounting plate 5 by reasonably controlling the length of the slot. When the first cam 1031 and the second cam 1032, which are meshing with each other, are placed in the slot 1702, they can maintain the preset meshing posture and will not shift or disengage during the movement of the mounting plate 5. The opposite sides of the support base 17 are also provided with coaxial support shaft mounting holes 1701 for mounting the support shaft 16. The support shaft 16 is a cylindrical rod structure, and its two ends are fixedly connected to a pair of support bases 17 through the support shaft mounting holes 1701 on the support base 17 (such as interference fit or bolt fastening). The axial direction of the support shaft 16 is consistent with the symmetrical distribution direction of the pair of support bases 17, so that the support shaft 16 and the pair of support bases 17 form a linked whole. When the mounting plate 5 moves up and down, the support shaft 16 can move vertically synchronously with the support bases 17.

[0068] The spring plate mounting block 6 is a block-shaped structure, installed within a rectangular frame formed by four upright plates 10. Its installation position corresponds to the vertical movement path of the support shaft 16, ensuring precise engagement with the spring plate 8 when the support shaft 16 moves up and down. A slot 601 is formed on the upper surface of the spring plate mounting block 6. The width of the slot 601 is slightly larger than the thickness of the spring plate 8, used to accommodate the root of the spring plate 8, achieving initial positioning of the spring plate 8. A second mounting hole 602 is also formed on the spring plate mounting block 6, penetrating the slot 601, for inserting a positioning pin 7 to fix the spring plate 8 within the slot 601. The spring plate mounting block 6 is provided with two pairs of spring plates 8. Each pair of spring plates 8 consists of two identical spring plates (such as elastic metal plates). The middle part of the spring plates 8 is bent so that each pair of spring plates forms a preset shape with the opening facing down and the tip facing up. The roots of the two spring plates are separated from each other, and the tips are close to each other in the natural state, forming an inverted V-shaped structure. This shape can ensure that when the support shaft 16 or the convex shaft 103 moves, the tip of the spring plate can be squeezed to open it. At the same time, the tip can penetrate into the pins of the irregularly arranged contact member 101. Since the spring plate 8 has good elastic deformation capability, the tip of the inverted V-shaped structure can be opened outward under the action of external force (such as the force of the support shaft 16 or the convex shaft 103). After the external force is removed, it can return to the closed state by its own elasticity, thereby realizing the controllable opening and resetting of the pins of the irregularly arranged contact member 101. The spring plate 8 has a first mounting hole 801 at its root. When the root of the spring plate 8 is inserted into the slot 601 of the spring plate mounting block 6, the first mounting hole 801 and the second mounting hole 602 are coaxial. By passing the positioning pin 7 through the two holes, the spring plate 8 can be detachably fixed to the spring plate mounting block 6, which is convenient for the spring plate 8 to be replaced after wear.

[0069] Preferably, the device further includes a guide mechanism, which is used to ensure the straightness of the vertical movement of the mounting plate 5 and prevent the mounting plate 5 from shifting. The guide mechanism includes a guide post 12, a linear bearing 14 and a compression spring 15.

[0070] The guide post 12 is a cylindrical rod. Its lower end is fixed to the guide post mounting hole 201 on the base plate 2 by interference fit or bolts, and its upper end extends to the upper part of the upright plate 10. The axis of the guide post 12 is parallel to the height direction of the upright plate 10, so as to ensure that the mounting plate 5 can maintain a matching position with the upright plate 10 when it moves along the guide post 12.

[0071] The linear bearing 14 is a standard component (such as a deep groove ball linear bearing) adapted to the guide post 12. It is installed in the pre-set linear bearing mounting hole 501 on the mounting plate 5 with an interference fit. The inner hole of the linear bearing 14 slides with the outer circumferential surface of the guide post 12, which can significantly reduce the frictional resistance when the mounting plate 5 moves along the guide post 12, ensuring smooth and stable movement. The compression spring 15 is sleeved on the guide post 12 and located between the linear bearing 14 and the base plate 2. The two ends of the spring abut against the lower surface of the linear bearing 14 and the upper surface of the base plate 2, respectively. When the mounting plate 5 moves downward, the linear bearing 14 moves downward and compresses the compression spring 15, storing force. When the downward force is removed, the compression spring 15 uses its elastic restoring force to push the linear bearing 14 and the mounting plate 5 upward to reset. At the same time, it can buffer the impact force when the mounting plate 5 moves downward, preventing damage to the components due to hard collisions.

[0072] Preferably, the device further includes a limiting mechanism for limiting the vertical travel of the mounting plate 5 to prevent excessive movement of the mounting plate 5 that could damage the components. The limiting mechanism includes a limiting ring 11 and a limiting screw 4.

[0073] The limiting ring 11 is a ring structure and is fixed to the upper end of the guide post 12 by threaded connection or interference fit. The outer diameter of the limiting ring 11 is larger than the inner diameter of the linear bearing 14, which is used to block the linear bearing 14 from continuing to move upward, thereby limiting the maximum upward height of the mounting plate 5.

[0074] The limiting screw 4 is mounted on the base plate 2 via the screw mounting block 3. The screw mounting block 3 is a block structure, fixed to the upper surface of the base plate 2 and located below the mounting plate 5. The limiting screw 4 and the screw mounting block 3 are connected by threads. The extension height can be adjusted by rotating the limiting screw 4. When the mounting plate 5 descends to the preset position, the lower surface of the mounting plate 5 abuts against the upper end of the limiting screw 4, restricting the mounting plate 5 from continuing to descend, thereby realizing the adjustment of the minimum descending height of the mounting plate 5 to adapt to the assembly requirements of different specifications of cam shafts.

[0075] Preferably, the device of the present invention further includes a limiting block 9, which is a block structure and is fixed to the side of the upright plate 10 by bolts, and is fixed to the outside of the area enclosed by the four upright plates 10. The upright plates 10 and the limiting block 9 cooperate to form a cavity that can position the product housing 102. The shape of the cavity is adapted to the shape of the product housing 102. When the product housing 102 is placed in the cavity, the side wall of the upright plate 10 and the side of the limiting block 9 together restrict the horizontal movement of the product housing 102. At the same time, the limiting protrusion 1001 on the upright plate 10 restricts the vertical movement of the product housing 102, ensuring that after the product housing 102 is fixed, the irregularly shaped arranged contact member 101 inside can be precisely aligned with the tip of the spring plate 8, providing a precise positioning reference for the subsequent smooth insertion of the convex shaft 103 into the cavity of the irregularly shaped arranged contact member 101.

[0076] Then combine with the appendix Figure 16 The method for assembling shafts with irregularly shaped contact components using the above-mentioned device is described. Figure 16 (a) is a schematic diagram of the initial state; Figure 16 (b) is a schematic diagram of the cam shaft feeding process; Figure 16 (c) is a schematic diagram of the cam shaft being pre-installed. Figure 16 (d) is a schematic diagram of the loading of the product housing 102 equipped with contact parts; Figure 16 Image (e) shows a schematic diagram of the cam shaft being assembled in place; Figure 16 Figure (f) shows a schematic diagram of the completed assembly. Based on the structural characteristics of the aforementioned device, this method utilizes the up-and-down movement of the mounting plate 5 to drive the movement of the support shaft 16 and the convex shaft 103. Combined with the elastic deformation of the spring plate 8, this achieves precise assembly of the convex shaft 103. The specific steps are as follows:

[0077] S1, Initial position: Support shaft 16 is located at the entrance position of the inverted V-shaped structure of spring plate 8 ( Figure 16 In (a), a supporting force is formed on the spring sheet 8, so that the tip of the spring sheet 8 is kept open, and a channel is reserved for the convex shaft 103 to enter the interior of the spring sheet 8;

[0078] S2. Loading and positioning of cam 103: Place the first cam 1031 and the second cam 1032, which are meshing with each other, into the slot 1702 (support structure) of the support base 17, ensuring that the cam 103 is stably supported in a preset meshing posture, and that the cam 103 and the corresponding support shaft 16 are vertically aligned, thus completing the loading of the cam 103. Figure 16 (b)

[0079] S3, Support shaft 16 descends and closes with spring plate 8: The mounting plate 5 is driven to descend along the guide post 12 by the driving component (such as the downward push handle 13). The mounting plate 5 drives the support seat 17 to descend synchronously with the support shaft 16. The support shaft 16 and the corresponding first convex shaft 1031 (or second convex shaft 1032) gradually engage with the inverted V-shaped structure formed by a pair of spring plates 8. Figure 16 In the middle (c), the supporting force of the support shaft 16 on the spring plate 8 disappears, and the spring plate 8 closes the tip of the inverted V-shaped structure by its own elasticity; at the same time, the compression spring 15 is compressed by the linear bearing 14 and stores the reset energy.

[0080] S4. Product housing 102 loading and positioning: The product housing 102, pre-installed with two sets of irregularly shaped contact elements 101, is placed into the cavity formed by the cooperation of the upright plate 10 and the limiting block 9. Through the combined action of the upright plate 10, the limiting block 9, and the limiting protrusion 1001, the horizontal and vertical movement of the product housing 102 is restricted, ensuring that the irregularly shaped contact elements 101 and the tips of the spring plates 8 are precisely aligned. At this time, the tips of the spring plates 8 are inserted between the pins of the irregularly shaped contact elements 101. Figure 16(d) is in the middle, in preparation for the subsequent expansion of the pins;

[0081] S5. The convex shaft 103 is assembled with the irregularly shaped contact piece 101 and opened: The mounting plate 5 is driven to move upward along the guide post 12 by a driving component (such as pulling the handle 13 upward). The mounting plate 5 drives the support base 17, support shaft 16 and convex shaft 103 to move upward synchronously. During the upward movement, the convex shaft 103 first contacts the tip of the spring plate 8 and applies an upward force to it, forcing the tip of the spring plate 8 to open. At the same time, the tip of the spring plate 8 applies an outward force to the pins of the irregularly shaped contact piece 101, so that the pins of the irregularly shaped contact piece 101 are evenly opened, forming a channel that facilitates the entry of the convex shaft 103. As the mounting plate 5 continues to move upward, the convex shaft 103 is smoothly guided into the cavity formed by the two irregularly shaped contact pieces 101 along the opened channel. Figure 16 (e) until the cam shaft 103 is fully assembled. At this time, the mounting plate 5 moves up until it abuts against the limit ring 11, and the mounting plate 5 stops moving up.

[0082] S6, Spring Plate 8 Reset and Finished Product Unloading: Drive Mounting Plate 5 downwards, Support Shaft 16 disengages from the inverted V-shaped structure of Spring Plate 8, and the tip of Spring Plate 8 closes ( Figure 16 In step (f), the pins of the irregularly arranged contact 101 are restored and stably engaged with the convex shaft 103. Remove the product housing 102 to complete the assembly.

[0083] In summary, the present invention solves the problems of blindness and uneven force in traditional manual assembly by the synergistic effect of the various components of the device. Specifically: (1) The device of the present invention uses the base plate 2 as the basic reference and establishes a unified spatial positioning system through the upright plate 10, the limiting block 9, the guide column 12 and other components, so that the relative positions of the convex shaft 103 (positioned by the support seat 17 and the support shaft 16), the irregularly arranged contact piece 101 (positioned by the product shell 102 and the cavity), and the spring piece 8 (positioned by the spring piece mounting block 6) are accurately controllable, avoiding positional deviations in manual assembly and ensuring that the assembly path of the convex shaft 103 and the irregularly arranged contact piece 101 is fixed. (2) The present invention utilizes the elastic properties of the spring plate 8 to convert the mechanical movement of the cam shaft 103 into the controllable deformation of the spring plate 8. When the mounting plate 5 moves downward, the support shaft 16 disengages from the spring plate 8, and the spring plate 8 closes elastically, making it easy to insert between the pins of the irregularly arranged contact member 101. When the mounting plate 5 moves upward, the cam shaft 103 pushes the spring plate 8 to open, and simultaneously drives the pins of the irregularly arranged contact member 101 to expand evenly, which avoids the unexpected deformation of the pins during manual operation and ensures that the pins are subjected to balanced force. (3) The present invention connects the support base 17, the support shaft 16 and the cam shaft 103 into a linkage whole through the mounting plate 5, so that the up and down movement of the mounting plate 5 can synchronously drive the movement of the cam shaft 103. At the same time, the guide mechanism ensures the linear movement of the mounting plate 5, and the limiting mechanism controls the movement stroke, ensuring the stability of the movement trajectory of the cam shaft 103, realizing "one-time drive, multi-component coordinated action", and improving assembly efficiency and accuracy.

[0084] The foregoing has provided a detailed description of the apparatus and method for installing a convex shaft into an irregularly shaped array of contact members. Specific examples have been used to illustrate the principles and specific implementation methods of the invention. These embodiments are merely illustrative of the methods and core concepts of the invention. It should be noted that any simple modifications, equivalent variations, and alterations made to the above embodiments based on the technical essence of the invention by those skilled in the art fall within the protection scope of the invention.

Claims

1. A device for inserting a convex shaft into an irregularly shaped array of contact members, characterized in that, For assembling the convex shaft (103) into the irregularly arranged contact member (101) disposed within the product housing (102), including: Base plate (2); Four uprights (10) are arranged in a rectangular frame on the base plate (2); The mounting plate (5) can move up and down relative to the upright plate (10); A pair of support seats (17) are symmetrically fixed on the mounting plate (5). Each support seat (17) is provided with a support structure for supporting the convex shaft (103). At least one support shaft (16) is connected between the pair of support seats (17). At least one pair of spring plates (8), the number of pairs of spring plates (8), the number of support shafts (16) and the number of convex shafts (103) are all consistent. The spring plates (8) are set on the upright plate (10) through spring plate mounting blocks (6). The two spring plates (8) in each pair of spring plates (8) are elastic elements with the root fixed and the middle bent. The tips of the two spring plates (8) are close to each other in the natural state, forming an inverted V-shaped structure with the opening facing down and the tip facing up. The up-and-down movement of the mounting plate (5) drives at least one support shaft (16) to reciprocate vertically, so that at least one support shaft (16) can alternately engage and disengage from the inverted V-shaped structure; through the engagement and disengagement of at least one support shaft (16), the tips of at least one pair of spring plates (8) are driven to switch between an open state and a closed state; the opening and closing actions of the tips of at least one pair of spring plates (8) are used to sequentially complete the entire assembly process of guiding the convex shaft (103), expanding the pins of the irregularly arranged contact parts (101), inserting the convex shaft (103) into the cavity formed by the irregularly arranged contact parts (101), and unloading the finished product.

2. The apparatus according to claim 1, characterized in that, It also includes a guide mechanism, which includes a linear bearing (14) disposed on the mounting plate (5) and a guide post (12) fixed on the base plate (2) and extending through the linear bearing (14). A compression spring (15) is sleeved on the guide post (12). The compression spring (15) is located between the linear bearing (14) and the base plate (2). The mounting plate (5) moves up and down along the guide post (12) through the linear bearing (14).

3. The apparatus according to claim 2, characterized in that, It also includes a limiting mechanism for limiting the up and down travel of the mounting plate (5).

4. The apparatus according to claim 3, characterized in that, The limiting mechanism includes a limiting ring (11) located at the upper end of the guide post (12) and a limiting screw (4) located on the screw mounting block (3). The screw mounting block (3) is located on the base plate (2), and the vertical travel of the mounting plate (5) is between the limiting ring (11) and the limiting screw (4).

5. The apparatus according to claim 1, characterized in that, It also includes a limiting block (9), and the upright plate (10) cooperates with the limiting block (9) to form a cavity that can position the product housing (102) to restrict its movement after the product housing (102) is placed in, and to ensure that the irregularly arranged contact members (101) in the product housing (102) are aligned with the tips of at least one pair of spring plates (8).

6. The apparatus according to claim 5, characterized in that, The upright plate (10) is provided with a limiting protrusion (1001) to limit the vertical displacement of the product shell (102).

7. The apparatus according to claim 1, characterized in that, The mounting plate (5) is provided with a through groove, and the four upright plates (10) are all located in the through groove.

8. The apparatus according to claim 1, characterized in that, The mounting plate (5) is connected to a drive component that drives it to move up and down. The drive component is a manually operated handle (13) or an automated drive element.

9. The apparatus according to claim 1, characterized in that, The cam shaft (103) includes a first cam shaft (1031) and a second cam shaft (1032) that mesh with each other.

10. The apparatus according to claim 9, characterized in that, The supporting structure is a slot (1702) for placing the first cam (1031) and the second cam (1032) when the gears are in a meshing state.

11. The apparatus according to claim 1, characterized in that, The spring sheet (8) is fixed to the spring sheet mounting block (6) by the spring sheet positioning pin (7), and the spring sheet mounting block (6) is mounted on the upright plate (10).

12. A method for assembling a shaft using irregularly shaped contact elements arranged in the form of the device described in any one of claims 1-11, characterized in that, Includes the following steps: S1. In the initial state, the support shaft (16) is located at the inverted V-shaped entrance of at least one pair of spring plates (8), so that the tips of at least one pair of spring plates (8) are kept open to form an flared channel; the convex shaft (103) is placed on the supporting structure of the support seat (17); S2. Drive the mounting plate (5) downward, causing the support shaft (16) and the convex shaft (103) to move downward synchronously, so that the support shaft (16) and the convex shaft (103) are inserted into the inverted V-shaped structure, and the tips of the at least one pair of spring plates (8) close due to the loss of support and their own elasticity. S3. Place the product housing (102) pre-installed with irregularly shaped arranged contact elements (101) into the positioning cavity formed by the upright plate (10) and the limiting block (9), so that the tips of at least one pair of spring plates (8) in the closed state are inserted between the pins of the irregularly shaped arranged contact elements (101); S4. Drive the mounting plate (5) upward, which in turn drives the support shaft (16) and the convex shaft (103) to move upward synchronously; During the upward movement, the convex shaft (103) contacts and expands the tip of the spring sheet (8), and the tip of the spring sheet (8) expands the pin of the irregularly arranged contact (101) to form an assembly channel, and guides the convex shaft (103) into the cavity of the irregularly arranged contact (101) until it is assembled in place. S5. Drive the mounting plate (5) downwards to close the tip of the spring sheet (8) and remove it from between the pins, and then take out the assembled finished product.

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