A card point assembly

Abstract

The utility model relates to graphite boat assembly technical field, concretely relates to a clamping point combination device. The clamping point includes the clamping point post and the clamping point cap of interference fit, and the clamping point combination device includes the pressure head, the pressure head includes the pressure head main part, and the positioning slot of setting at the end of pressure head main part, and the center of positioning slot is provided with the limiting boss. The positioning slot is used for accommodating the clamping point cap, and the limiting boss abuts with the clamping point post. The transverse deviation in the clamping point installation process is eliminated through the positioning slot structure, improves the installation accuracy, thereby improves the adaptability of clamping point installation, reduces the installation failure due to the alignment deviation, and optimizes the installation time. The point contact design of limiting boss changes the stress transmission direction, avoids the stress diffusion to the clamping point cap area, reduces the risk of clamping point cap rupture, thereby prolongs the service life of clamping point, reduces the equipment maintenance frequency, and further solves the technical problems that the existing pressure head structure is difficult to accurately position and the clamping point cap is easily damaged due to stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of graphite boat assembly technology, specifically to a locking point assembly device. Background Technology

[0002] As a core precision component of graphite boats in the photovoltaic industry, the clamping point's main function is to achieve precise positioning and stable clamping of silicon wafers, directly affecting the production accuracy and conversion efficiency of photovoltaic cells. In the graphite boat assembly process, the installation of the clamping point must meet micron-level positional tolerance requirements, a process that must be completed through the coordinated operation of a dedicated pressure head and a clamping machine.

[0003] Currently, most pressure heads used in the industry have a single structural design, which leads to poor adaptability and time-consuming adjustments when dealing with different specifications of clamping points (such as different thicknesses). In addition, traditional pressure heads are prone to stress concentration on the graphite cap of the clamping point during pressure transmission, causing the graphite cap of the clamping point to be crushed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a locking point combination device, which solves the technical problems of existing pressure head structures being difficult to position accurately and prone to damage to the locking point cap due to stress concentration.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a locking point assembly device. The locking point includes an interference-fit locking point post and a locking point cap. The locking point assembly device includes a pressure head, which includes a pressure head body and a positioning groove formed at the end of the pressure head body. A limiting boss is provided at the center of the positioning groove. The positioning groove is used to accommodate the locking point post portion of the locking point, and the limiting boss abuts against the locking point post.

[0007] In one possible implementation, the diameter of the positioning groove is larger than the diameter of the locking cap, and the diameter of the positioning groove is smaller than the diameter of the locking point.

[0008] In one possible implementation, the diameter of the limiting boss is smaller than the diameter of the locking post.

[0009] In one possible implementation, the edge of the positioning groove is provided with a guide surface, and the locking cap slides into the positioning groove along the guide surface.

[0010] In one possible implementation, the locking point assembly further includes a base with a limiting groove, and the end of the locking point post facing away from the positioning groove abuts against the limiting groove.

[0011] In one possible implementation, the locking point assembly further includes a driving device, with one end of the pressure head body facing away from the positioning groove connected to the driving device, and the driving device driving the pressure head to reciprocate in the vertical direction.

[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, the positioning groove structure eliminates lateral offset during the installation process, improves installation accuracy, thereby enhancing the adaptability of the installation, reducing installation errors caused by alignment deviations, and optimizing installation time. The point contact design of the limiting boss changes the stress transmission direction, preventing stress from spreading to the clamp cap area, reducing the risk of clamp cap breakage, thus extending the service life of the clamp, reducing equipment maintenance frequency, and solving the technical problems of existing pressure head structures, such as difficulty in precise positioning and susceptibility to damage to the clamp cap due to stress concentration. Attached Figure Description

[0013] Figure 1 This utility model provides a schematic diagram of the assembly structure of a locking point combination device and a locking point.

[0014] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0015] Attached image labels:

[0016] 1. Press head; 11. Press head body; 12. Positioning groove; 13. Limiting boss; 2. Base; 21. Limiting groove; 3. Locking point; 31. Locking point post; 32. Locking point cap. Detailed Implementation

[0017] To solve the above-mentioned technical problems, this utility model provides a checkpoint combination device. The technical solution and embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0018] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., 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 application 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 limitations on this application.

[0019] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "joining" should be interpreted broadly, for example, they can refer to fixed connection, detachable connection, or integral connection; for those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a locking point assembly device. The locking point 3 includes a locking point post 31 and a locking point cap 32 that are interference-fitted. The locking point assembly device includes a pressure head 1, which includes a pressure head body 11 and a positioning groove 12 formed at the end of the pressure head body 11. A limiting boss 13 is provided at the center of the positioning groove 12. The positioning groove 12 is used to accommodate the locking point cap 32, and the limiting boss 13 abuts against the locking point post 31.

[0022] The pressure head body 11 refers to the rigid structure that supports the positioning groove 12 and the limiting boss 13. Specifically, it can be made of metal or ceramic materials to form an integral structure, providing a stable installation reference for the positioning groove 12.

[0023] The positioning groove 12 refers to the recessed structure set at the end of the pressure head body 11 to accommodate the locking cap 32. Specifically, it can be an annular groove structure. The lateral displacement of the locking cap 32 is restricted by the gap between the groove wall and the side of the locking cap 32, ensuring that the locking cap 32 moves along the preset path.

[0024] The limiting boss 13 refers to the axial protrusion structure set at the center of the positioning groove 12. Specifically, it can be a cylindrical protrusion. By forming a point contact with the end face of the locking post 31, it concentrates the pressure to the axial area of ​​the locking post 31, and avoids the pressure from spreading to the locking cap 32.

[0025] The working process and principle of this application are as follows: the locking point assembly device includes a pressure head 1, which consists of a pressure head body 11 and a positioning groove 12. The positioning groove 12 is formed at the end of the pressure head body 11 and is used to accommodate the locking point post 31 of the locking point 3. A limiting boss 13 is provided at the center of the positioning groove 12, and the limiting boss 13 abuts against the locking point post 31.

[0026] The pressure head body 11 serves as a load-bearing structure, providing rigid support for the positioning groove 12 and ensuring the stability of the positioning reference. The geometric dimensions of the positioning groove 12 and the locking cap 32 form a clearance fit, ensuring both assembly freedom and controlling the maximum offset. The axial protrusion design of the limiting boss 13 forms a precise mechanical transmission path.

[0027] During operation, the locking cap 32 is precisely housed within the positioning groove 12, forming a physical constraint boundary to eliminate lateral offset. The limiting boss 13 forms a point-contact abutment with the locking post 31, converting the surface pressure generated by traditional surface contact into concentrated stress acting on the axis of the locking post 31, preventing stress from diffusing to the locking cap 32 area. The controllable transfer of stress concentration points is achieved by changing the stress transmission direction.

[0028] The positioning groove 12 structure eliminates lateral offset during the installation of the locking point 3, improving installation accuracy. The point contact design of the limiting boss 13 changes the stress transmission direction, preventing stress from spreading to the locking point cap 32 area and reducing the risk of the locking point cap 32 breaking. This design improves the adaptability of the locking point 3 installation, reduces installation errors caused by alignment deviations, and optimizes installation time. At the same time, through the reasonable distribution of stress, it extends the service life of the locking point 3 and reduces the frequency of equipment maintenance.

[0029] See Figure 1 and Figure 2 Furthermore, the diameter of the positioning groove 12 is greater than the diameter of the locking cap 32, and the diameter of the positioning groove 12 is less than the diameter of the locking point 3.

[0030] Specifically, during the installation of the locking point 3, the diameter of the positioning groove 12 is larger than the diameter of the locking point cap 32, allowing the locking point cap 32 to freely enter the groove along the axial direction, eliminating assembly resistance caused by dimensional interference. When the locking point post 31 contacts the limiting boss 13, the applied axial pressure causes the locking point cap 32 to expand radially. At this time, the diameter of the positioning groove 12 is smaller than the diameter of the locking point 3, so that the outer circumferential surface of the locking point cap 32 is restricted within a predetermined range by the side wall of the positioning groove 12.

[0031] The design of the positioning groove 12 having a diameter larger than that of the locking cap 32 ensures that the locking cap 32 can be smoothly embedded into the positioning groove 12, avoiding installation resistance or deformation of the locking cap 32 due to insufficient space in the groove. Simultaneously, the design of the positioning groove 12 having a diameter smaller than that of the locking point 3 ensures that when the locking post 31 abuts against the limiting boss 13, the outer edge of the locking cap 32 is constrained by the side wall of the positioning groove 12, limiting its lateral displacement and preventing the locking cap 32 from deviating from its preset position under pressure. This structural design not only ensures the precise positioning of the locking cap 32 but also reduces the risk of alignment deviation during assembly through matching structural dimensions, thereby improving the assembly accuracy and stability of the locking point 3 assembly.

[0032] like Figure 2 As shown, specifically, the diameter of the limiting boss 13 is smaller than the diameter of the locking post 31.

[0033] Specifically, during the downward pressing of the pressure head 1, the limiting boss 13 and the center point of the end face of the locking post 31 form point contact or small-area surface contact, and the pressure is transmitted along the axial centerline of the locking post 31 to the contact surface between the locking post 31 and the base 2. Since the diameter of the limiting boss 13 is smaller than the diameter of the locking post 31, a uniform gap is formed between the side wall of the locking post 31 and the inner wall of the positioning groove 12. This gap can disperse the radial expansion stress generated when the locking post 31 is pressed.

[0034] This design prevents pressure from diffusing to the sidewall of the locking post 31, effectively preventing lateral deformation of the locking post 31. Simultaneously, the concentrated pressure transmission improves the stability of the locking point 3 and reduces the risk of structural breakage of the locking cap 32. Furthermore, this design simplifies the alignment process between the pressure head 1 and the locking point 3, improving assembly efficiency.

[0035] In one alternative embodiment, the edge of the positioning groove 12 is provided with a guide surface (not shown in the figure), and the locking cap 32 slides into the positioning groove 12 along the guide surface.

[0036] The guide surface can be designed as an inclined surface or a curved surface. The inclined surface can be conical or frustum-shaped, forming a continuous transition with the inner wall of the positioning groove 12. The curved surface can be a circular or elliptical arc shape to achieve smooth guidance. The inclination angle or radius of curvature of the guide surface can be optimized according to the size and material properties of the locking cap 32 to ensure the best guiding effect. The surface of the guide surface can be polished to reduce the coefficient of friction.

[0037] The guide surface effectively prevents direct collision between the locking cap 32 and the edge of the positioning groove 12, reducing frictional resistance during assembly. As the locking cap 32 slides into the positioning groove 12 along the guide surface, it is subject to continuous directional constraints, eliminating alignment deviations. This design not only improves assembly efficiency but also protects the integrity of the locking cap 32 surface, reducing damage to the locking point 3 caused by improper installation. The presence of the guide surface allows the locking cap 32 to be automatically guided to the correct position even with slight initial positional deviations, enhancing the fault tolerance and reliability of the assembly process.

[0038] See Figure 1 In one optional embodiment, the locking point assembly device further includes a base 2, on which a limiting groove 21 is formed, and the end of the locking point post 31 facing away from the positioning groove 12 abuts against the limiting groove 21.

[0039] In practical applications, the base 2 can be made of metal materials, such as stainless steel or aluminum alloy, to provide sufficient support strength. The limiting groove 21 can be designed as circular or square, with its dimensions matching the bottom shape of the locking point 31. The surface of the base 2 can be polished to reduce friction when in contact with the locking point 3. A guide mechanism can be provided between the pressure head 1 and the base 2 to ensure that the pressure head 1 can accurately align with the limiting groove 21 of the base 2 when it presses down. In addition, the base 2 can be fixed to the worktable by means of bolts or clips to increase the stability of the overall device.

[0040] The limiting groove 21 of the base 2 and the positioning groove 12 of the pressure head 1 form a spatial correspondence. When the locking post 31 is pressed down by the pressure head 1, the limiting groove 21 abuts against the bottom end of the locking post 31, limiting its horizontal displacement and dispersing the vertical pressure. This bidirectional limiting mechanism ensures that the locking post 31 is always in a vertical stress state during the pressing process, avoiding tilting or uneven stress distribution caused by unilateral fixing. This improves the verticality and stability of the locking point 3 installation and reduces the risk of damage to the locking post 31 or the base 2 structure due to uneven stress. At the same time, this design also enhances the applicability of the locking point assembly device, adapting to different specifications of locking points 3, thus increasing the device's versatility and practical value.

[0041] In one optional embodiment, the locking point assembly further includes a driving device (not shown in the figure), with one end of the pressure head body 11 away from the positioning groove 12 connected to the driving device, and the driving device driving the pressure head 1 to reciprocate in the vertical direction.

[0042] The drive unit can be a mechanical drive component such as a motor, cylinder, or hydraulic cylinder, connected to the pressure head body 11 via a transmission mechanism such as a lead screw, gear, or connecting rod. The drive unit controls the pressure head 1 to reciprocate vertically, and the stroke can be adjusted according to the height of the locking post 31. The reciprocating speed of the pressure head 1 can be controlled within a certain range to ensure the stable installation of the locking post 31. The drive unit can be equipped with a position sensor and a force feedback device to monitor the position and pressure of the pressure head 1 in real time, further improving installation accuracy and stability.

[0043] The introduction of the drive device enables the pressure head 1 to perform stable reciprocating motion in the vertical direction, avoiding the uncertainties of manual operation. The connection design between the pressure head body 11 and the drive device ensures the linear transmission of driving force and reduces the deviation of the pressure head 1 during movement. This precise motion control mechanism ensures accurate docking of the locking post 31 and the limiting groove 21, while reducing the risk of damage to the locking post 31 or graphite cap due to deviation in the motion trajectory. Therefore, this application improves the efficiency and quality of the installation of the locking point 3, providing reliable technical support for the precision assembly of graphite boats in the photovoltaic industry.

[0044] The above description is merely a preferred embodiment of the present utility model, and the specific embodiments described above are not intended to limit the present utility model. Various modifications and variations can be made within the scope of the technical concept of the present utility model. All refinements, modifications, or equivalent substitutions made by those skilled in the art based on the above description are within the scope of protection of the present utility model.

Claims

1. A locking point assembly device, wherein the locking point comprises an interference-fit locking point post and a locking point cap, characterized in that, The device includes a pressure head, which comprises a pressure head body and a positioning groove formed at the end of the pressure head body, wherein a limiting boss is provided at the center of the positioning groove; The positioning groove is used to accommodate the locking cap, and the limiting boss abuts against the locking post.

2. The checkpoint combination device according to claim 1, characterized in that, The diameter of the positioning groove is larger than the diameter of the locking cap, and the diameter of the positioning groove is smaller than the diameter of the locking point.

3. The checkpoint combination device according to claim 2, characterized in that, The diameter of the limiting boss is smaller than the diameter of the locking post.

4. The checkpoint combination device according to claim 1, characterized in that, The positioning groove has a guide surface along its edge, and the locking cap slides into the positioning groove along the guide surface.

5. The checkpoint combination device according to any one of claims 1 to 4, characterized in that, The locking point assembly also includes a base, on which a limiting groove is formed, and the end of the locking point column opposite to the positioning groove abuts against the limiting groove.

6. The checkpoint combination device according to claim 5, characterized in that, The locking point assembly also includes a driving device. The end of the pressure head body that is away from the positioning groove is connected to the driving device, and the driving device drives the pressure head to reciprocate in the vertical direction.

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