L-shaped pin positioning and press-fitting structure and method

Abstract

The application discloses an L-shaped pin positioning and press-fitting structure and method, which comprises an L-shaped shell pressing plate and an L-shaped positioning tool; the height of the L-shaped shell pressing plate can be lifted and lowered, and the top surface of the L-shaped shell located directly below can be pressed and positioned; the L-shaped positioning tool comprises an L-shaped positioning bottom plate, an L-shaped lifting limiting plate and an L-shaped horizontal push plate; the L-shaped positioning bottom plate is hung and arranged at the bottom of an L-shaped through positioning groove, can be lifted and lowered synchronously with the L-shaped shell pressing plate, and can extend into the inner cavity of the L-shaped shell; the L-shaped lifting limiting plate faces the L-shaped pin hole, the height of the L-shaped lifting limiting plate can be lifted and lowered, the bottom of the L-shaped lifting limiting plate is provided with L-shaped pin limiting grooves which are equal in number to the L-shaped pin holes and are one-to-one corresponding and have openings at the bottom ends; and the L-shaped horizontal push plate can be horizontally slid in the direction of the L-shaped lifting limiting plate under the drive of external force. The application can press and fit multiple L-shaped pins into the L-shaped pin holes of the L-shaped shell of an automobile executor synchronously, and the L-shaped pins are accurate, have no deformation and have high consistency during the press-fitting process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic pin inserting machines, in particular to an L-shaped pin positioning and press-fitting structure and method. BACKGROUND

[0002] In the manufacturing process of automobile grille actuators, the pin inserting process plays a key role. The process requirements vary for different types of PIN pins, and the insertion process of L-shaped PIN pins is particularly critical. However, the current processing of L-shaped PIN pins mainly relies on a semi-automatic insertion method, which requires manual pre-assembly followed by equipment press-fitting. This results in limited insertion speed and low production efficiency. In addition, this method requires frequent manual intervention and has high labor intensity, as workers need to constantly adjust the jig manually, which not only significantly increases physical exertion, but also may cause insertion quality fluctuations due to operator fatigue, making it difficult to ensure the accuracy of the connection position and leading to a low pass rate.

[0003] To address the above challenges, the present application proposes a solution that uses a highly automated insertion process to significantly improve the insertion efficiency of L-shaped PIN pins, enabling fast and accurate positioning and insertion of L-shaped PIN pins, and thus optimizing and improving production efficiency. SUMMARY

[0004] The technical problem to be solved by the present application is to address the deficiencies of the prior art and provide an L-shaped pin positioning and press-fitting structure and method that can simultaneously press-fit multiple L-shaped pins into the L-shaped pin holes of an automobile actuator L-shaped housing, and ensure that each L-shaped pin is accurately inserted into the predetermined position without deformation and consistently, with a high pin pass rate.

[0005] To solve the above technical problems, the technical solution adopted by the present application is as follows:

[0006] An L-shaped pin positioning and press-fitting structure includes an L-shaped housing compression plate and an L-shaped positioning tool.

[0007] The L-shaped pin is L-shaped and includes an insertion part, an L-shaped bending part, and an electrical interface part arranged in sequence.

[0008] The L-shaped housing is located at the L-shaped pin positioning and press-fitting station and has a plurality of L-shaped pin holes arranged horizontally side by side.

[0009] The L-shaped housing compression plate is located directly above the L-shaped pin positioning and press-fitting station and can be raised and lowered in height. When the L-shaped housing compression plate is lowered in height, it can compress and position the top surface of the L-shaped housing located at the L-shaped pin positioning and press-fitting station.

[0010] The side of the L-shaped housing compression plate facing the L-shaped pin holes is provided with an L-shaped through positioning groove.

[0011] The L-shaped positioning tool comprises an L-shaped positioning base plate, an L-shaped lifting limiting plate and an L-shaped horizontal push plate.

[0012] The L-shaped positioning base plate is hung and arranged at the bottom of the L-shaped through positioning groove and can be lifted synchronously with the L-shaped shell pressing plate and can extend into the inner cavity of the L-shaped shell.

[0013] The L-shaped lifting limiting plate and the L-shaped horizontal push plate are oppositely arranged on the two sides of the L-shaped positioning base plate, wherein the L-shaped lifting limiting plate faces the L-shaped pin hole, the height of the L-shaped lifting limiting plate can be lifted, the bottom of the L-shaped lifting limiting plate is provided with L-shaped pin limiting grooves equal in number and one-to-one corresponding to the L-shaped pin holes, and the bottom end of each L-shaped pin limiting groove is provided with an opening.

[0014] The L-shaped horizontal push plate can be horizontally slid in the direction of the L-shaped lifting limiting plate under the driving of external force.

[0015] Each L-shaped pin limiting groove is a horn groove, the flared end of the horn groove faces the L-shaped horizontal push plate and has a width greater than that of the L-shaped pin hole, and the constricted end of the horn groove faces the L-shaped pin hole and has a width equal to that of the L-shaped pin hole.

[0016] The horn groove is not less than 1.5 times the L-shaped pin hole.

[0017] Further comprising a shell transmission line for L-shaped shell transmission, the shell transmission line has an L-shaped pin positioning and pressing station; each L-shaped pin hole is perpendicular to the shell transmission line.

[0018] Further comprising an L-shaped lifting assembly arranged on one side of the L-shaped pin positioning and pressing station and used for driving the height lifting of the L-shaped shell pressing plate.

[0019] Further comprising a horizontal pressing assembly used for driving the horizontal sliding of the L-shaped horizontal push plate.

[0020] An electrical interface push plate is arranged on the wall surface of the L-shaped horizontal push plate facing the L-shaped lifting limiting plate side, the electrical interface push plate has a gap with the L-shaped positioning base plate, and the gap is not less than the thickness of the plug-in part.

[0021] An L-shaped pin positioning and pressing method comprises the following steps.

[0022] Step 1, pressing the L-shaped shell: the L-shaped shell pressing plate carrying the L-shaped positioning tool is synchronously lowered in height until the L-shaped shell pressing plate presses and positions the top surface of the L-shaped shell located on the L-shaped pin positioning and pressing station.

[0023] Step 2, L-shaped positioning base position alignment: while the L-shaped positioning base is pressed against the L-shaped shell, the L-shaped positioning base extends into the inner cavity of the L-shaped shell, and the top surface of the L-shaped positioning base is flush with the bottom surface of the L-shaped pin hole.

[0024] Step 3, forming a closed L-shaped pin limiting groove: the height of the L-shaped lifting limiting plate is lowered until it is in contact with the top surface of the L-shaped positioning base, so that each L-shaped pin limiting groove of the bottom opening is surrounded by the L-shaped positioning base, forming a closed L-shaped pin limiting groove.

[0025] Step 4, placing L-shaped pins: place L-shaped pins equal to the number of L-shaped pin holes on the top surface of the L-shaped positioning base between the L-shaped lifting limiting plate and the L-shaped horizontal push plate; wherein the insertion part of the L-shaped pin is in direct contact with the top surface of the L-shaped positioning base; the tip of the insertion part of the L-shaped pin points to the corresponding closed L-shaped pin limiting groove; the electrical interface part of the L-shaped pin faces the L-shaped horizontal push plate.

[0026] Step 5, L-shaped pin pre-pressing: the L-shaped horizontal push plate slides horizontally towards the L-shaped lifting limiting plate, and during the sliding process, it comes into contact with the outer wall of the electrical interface part of all L-shaped pins placed on the L-shaped positioning base; the L-shaped horizontal push plate continues to slide horizontally towards the L-shaped lifting limiting plate to a set distance, the tip of the insertion part of each L-shaped pin passes through the corresponding closed L-shaped pin limiting groove in turn, and enters the corresponding L-shaped pin hole to a set depth, completing the pre-pressing of each L-shaped pin.

[0027] Step 6, L-shaped lifting limiting plate avoidance: the L-shaped lifting limiting plate is raised, and the bottom surface of the L-shaped lifting limiting plate is not lower than the top surface height of the electrical interface part of each L-shaped pin.

[0028] Step 7, L-shaped pin secondary pressing: the L-shaped horizontal push plate slides forward again to a set distance, so that all L-shaped pins are separated from the L-shaped positioning base, and the insertion part of the L-shaped pin is completely inserted into the corresponding L-shaped pin hole, thereby completing the synchronous positioning and pressing of all L-shaped pins with the L-shaped shell.

[0029] Step 8, reset: the L-shaped shell pressing plate is raised to release the pressing of the completed L-shaped shell, and the completed L-shaped shell enters the next process; the L-shaped horizontal push plate is reset; the L-shaped pin positioning and pressing station enters a new L-shaped shell to be pressed, and steps 1 to 8 are repeated to press the L-shaped pin of the next L-shaped shell to be pressed.

[0030] The L-shaped pin limiting groove in step 3 is a trumpet slot, and the flared end of the trumpet slot faces the L-shaped horizontal push plate; during the L-shaped pin pre-pressing process in step 5, the trumpet slot can easily guide the L-shaped pin to enter, preventing deformation of the pre-pressing of the L-shaped pin insertion part.

[0031] In step 8, the L-shaped horizontal push plate is driven by the horizontal pressing assembly to slide horizontally towards the L-shaped pin hole, and is automatically reset under the action of the horizontal reset spring.

[0032] The present application has the following beneficial effects:

[0033] 1、The L-shaped shell pressing plate in the present application can press the L-shaped shell to be inserted and pressed, facilitating subsequent pressing of the L-shaped pins.

[0034] 2、The L-shaped positioning bottom plate and the L-shaped lifting limiting plate in the L-shaped positioning tool in the present application jointly constitute a closed L-shaped pin limiting groove, which supports and guides the front end of the insertion part of each L-shaped pin, avoiding deformation of the L-shaped pin during pre-pressing, and when the L-shaped pin enters the L-shaped pin hole to a set depth, the L-shaped lifting limiting plate is lifted in height and can be avoided, without affecting the secondary pressing of the L-shaped pin, thereby ensuring the assembly accuracy and success rate.

[0035] 3、The horizontal pressing assembly and the L-shaped horizontal push plate can simultaneously press all the L-shaped pins in each L-shaped shell, thereby ensuring high consistency and high qualification rate of pressing. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 The overall structure schematic diagram of the L-shaped pin positioning and pressing structure is shown.

[0037] Figure 2 The three-dimensional structure schematic diagram of the preferred embodiment of the L-shaped pin positioning and pressing structure is shown.

[0038] Figure 3 The three-dimensional structure schematic diagram of the preferred embodiment of the L-shaped pin positioning and pressing structure is shown. Figure 2

[0039] The structure schematic diagram of the horizontal pressing assembly is shown. Figure 4

[0040] The structure schematic diagram of the L-shaped shell corresponding to a group of four L-shaped pins is shown. Figure 5

[0041] The structure schematic diagram of the L-shaped shell placed on the shell tool plate is shown. Figure 6 Among them:

[0042]

[0043] 610.L-shaped shell pressing plate; 611.L-shaped through positioning groove;

[0044] 620.L-shaped positioning tool;

[0045] ​621. L-shaped positioning bottom plate; 6211. suspension connecting plate;

[0046] 622. L-shaped lifting limiting plate; 6221. L-shaped pin limiting groove; 6222. L-shaped lifting connecting rod; 6223. inverted U-shaped lifting connecting plate; 6224. L-shaped lifting motor; 6225. inverted U-shaped motor mounting seat;

[0047] 623. L-shaped horizontal push plate;

[0048] 6231. electric interface part push plate; 6232. L-shaped bending part matching surface; 6233. guide push rod; 6234. reset spring;

[0049] 630. L-shaped lifting assembly;

[0050] 540. horizontal pressing assembly; 541. horizontal pressing head; 542. horizontal pressing electric cylinder; 543. horizontal pressing guide rail; 544. support frame;

[0051] 820. L-shaped shell; 821. L-shaped pin hole;

[0052] 840. shell transmission line; 842. L-shaped pin positioning pressing assembly station; 844. shell tooling plate;

[0053] 920. L-shaped pin; 921. L-shaped bending part; 940. plug-in part; 950. electric interface part; 960. barb. DETAILED DESCRIPTION

[0054] The application will be described in further detail below with reference to the drawings and specific preferred embodiments.

[0055] In the description of the application, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and "first", "second" and the like do not represent the importance of the parts, and therefore cannot be understood as limiting the application. The specific dimensions used in the embodiments are only for the purpose of illustrating the technical solutions and do not limit the protection scope of the application.

[0056] As shown in Figure 5 each L-shaped pin is L-shaped and includes plug-in part 940, L-shaped bending part 921 and electric interface part 950 arranged integrally in sequence; wherein the plug-in part is horizontally arranged, the plug-in part near the L-shaped bending part is provided with barb 960, and the electric interface part is vertically arranged for external power connection.

[0057] As shown in Figure 6As shown, the L-shaped shell 820 has several L-shaped pin holes 821 arranged horizontally side by side, preferably four.

[0058] As shown in Figure 1 , Figure 2 and Figure 3 , an L-shaped pin positioning and pressing structure includes a shell conveying line 840, an L-shaped shell pressing plate 610, an L-shaped positioning tool 620, an L-shaped lifting assembly 630, and a horizontal pressing assembly 540.

[0059] The shell conveying line can convey the L-shaped shell and has a shell loading station and an L-shaped pin positioning and pressing station 842. The shell conveying line is conveyed between the shell loading station and the L-shaped pin positioning and pressing station through a shell tool plate 844.

[0060] Further, the shell conveying line is perpendicular to each L-shaped pin hole of the L-shaped shell, that is, the pressing direction of the subsequent L-shaped pin is perpendicular to the shell conveying line.

[0061] The above-mentioned L-shaped shell pressing plate is located directly above the L-shaped pin positioning and pressing station and can be driven by the L-shaped lifting assembly to realize height adjustment. When the height of the L-shaped shell pressing plate is lowered, the top surface of the L-shaped shell located on the L-shaped pin positioning and pressing station can be pressed and positioned. The L-shaped lifting assembly is arranged on one side of the L-shaped pin positioning and pressing station and is a prior art, which will not be described here.

[0062] The side of the L-shaped shell pressing plate facing the L-shaped pin hole is provided with an L-shaped through positioning groove 611.

[0063] The L-shaped positioning tool includes an L-shaped positioning bottom plate 621, an L-shaped lifting limiting plate 622, and an L-shaped horizontal push plate 623.

[0064] The L-shaped positioning bottom plate is preferably suspended at the bottom of the L-shaped through positioning groove through two suspension connecting plates 6211 and can be lifted synchronously with the L-shaped shell pressing plate and can extend into the inner cavity of the L-shaped shell. Further, the bottom surface of the L-shaped positioning bottom plate can be provided with a clearance groove matched with the inner cavity component of the L-shaped shell.

[0065] The L-shaped lifting limiting plate and the L-shaped horizontal push plate are arranged on both sides of the L-shaped positioning bottom plate (preferably the long side).

[0066] The above-mentioned L-shaped lifting limiting plate faces and is close to the inner side of the L-shaped pin hole. The L-shaped lifting limiting plate can be driven by the L-shaped lifting limiting assembly to realize height adjustment.

[0067] The above-mentioned L-shaped lifting limiting assembly is preferably an L-shaped lifting motor 6224, which is preferably installed on the top of both sides of the L-shaped shell pressing plate through an inverted U-shaped motor mounting seat 6225 to provide a clearance space for the subsequent L-shaped horizontal push plate.

[0068] The bottom of the L-shaped lifting motor is preferably provided with an inverted U-shaped lifting connecting plate 6223, and each side leg of the inverted U-shaped lifting connecting plate is preferably connected with an L-shaped lifting connecting rod 6222. The two L-shaped lifting connecting rods are preferably located on both sides of the subsequent L-shaped horizontal push plate and the L-shaped through positioning groove, and form a flange on both sides of the L-shaped through positioning groove, which can be overlapped with the L-shaped positioning bottom plate, so as to limit the descending position of the L-shaped lifting limiting plate.

[0069] The L-shaped lifting limiting plate is preferably U-shaped, thereby facilitating automatic feeding of the L-shaped pin.

[0070] The bottom of the L-shaped lifting limiting plate is provided with an L-shaped pin limiting groove 6221 corresponding to the number of L-shaped pin holes. The bottom end of each L-shaped pin limiting groove is open.

[0071] Further, each L-shaped pin limiting groove is a horn groove, the necked end of the horn groove is adjacent to or in contact with the L-shaped pin hole, and the width is equal to the width of the L-shaped pin hole; the flared end of the horn groove faces the L-shaped horizontal push plate, and the width is greater than the width of the L-shaped pin hole.

[0072] Further, the horn groove is preferably not less than 1.5 times the size of the L-shaped pin hole, and in the embodiment, it is preferably 2 times. The width of the L-shaped lifting limiting plate is preferably half the length of the L-shaped pin insertion part.

[0073] The setting of the horn groove can correct the small deviation of the L-shaped pin during placement or horizontal pushing, and guide the L-shaped pin to align with the L-shaped pin hole position, and prevent deformation and deviation.

[0074] The L-shaped horizontal push plate can slide horizontally towards the L-shaped lifting limiting plate under the action of external force (i.e. horizontal pressing assembly).

[0075] Further, the middle and upper part of the L-shaped horizontal push plate is connected with a guide push rod 6233, and the two sides of the guide push rod are provided with a return spring 6234, which can reset the L-shaped horizontal push plate.

[0076] Further, the L-shaped horizontal push plate wall surface on the side facing the L-shaped lifting limiting plate is provided with an electrical interface part push plate 6231, and the electrical interface part push plate has a gap with the L-shaped positioning bottom plate, and the gap is not less than the thickness of the insertion part; the gap also forms an L-shaped bending part matching surface 6232 which matches the L-shaped bending part.

[0077] As shown in the drawings, Figure 4As shown in the figure, the horizontal pressing assembly preferably comprises a horizontal pressing head 541, a horizontal pressing electric cylinder 542, a horizontal pressing guide rail 543 and a support frame 544. Among them, the support frame is arranged on one side of the shell conveying line, the horizontal pressing guide rail is installed on the top of the support frame, the horizontal pressing electric cylinder is installed on the horizontal pressing guide rail, which is convenient for sharing with other processes, and the horizontal pressing electric cylinder is used to drive the extension of the horizontal pressing head, thereby pushing the horizontal movement of the horizontal pressing head.

[0078] An L-shaped pin positioning and pressing method, comprising the following steps.

[0079] Step 1, pressing L-shaped shell: the L-shaped shell pressing plate carries the L-shaped positioning tool to descend synchronously until the L-shaped shell pressing plate presses and positions the top surface of the L-shaped shell located on the L-shaped pin positioning and pressing station.

[0080] Step 2, aligning the position of the L-shaped positioning bottom plate: while the L-shaped positioning bottom plate presses the L-shaped shell, the L-shaped positioning bottom plate extends into the inner cavity of the L-shaped shell, and the top surface of the L-shaped positioning bottom plate is flush with the bottom surface of the L-shaped pin hole.

[0081] Step 3, forming a closed L-shaped pin limiting groove: the L-shaped lifting limiting plate is lowered in height until it contacts the top surface of the L-shaped positioning bottom plate, so that each bottom opening L-shaped pin limiting groove is surrounded by the L-shaped positioning bottom plate, forming a closed L-shaped pin limiting groove.

[0082] Step 4, placing L-shaped pins: place L-shaped pins equal in number to the L-shaped pin holes on the top surface of the L-shaped positioning bottom plate between the L-shaped lifting limiting plate and the L-shaped horizontal push plate; wherein the insertion part of the L-shaped pin directly contacts the top surface of the L-shaped positioning bottom plate; the tip of the insertion part of the L-shaped pin points to the corresponding closed L-shaped pin limiting groove; the electrical interface part of the L-shaped pin faces the L-shaped horizontal push plate.

[0083] Step 5, L-shaped pin pre-pressing: the L-shaped horizontal push plate slides horizontally towards the L-shaped lifting limiting plate, and in the process of sliding, the outer wall of the electrical interface part of all L-shaped pins placed on the L-shaped positioning bottom plate is contacted; the L-shaped horizontal push plate continues to slide horizontally towards the L-shaped lifting limiting plate to a set distance, the tip of the insertion part of each L-shaped pin passes through the corresponding closed L-shaped pin limiting groove in turn, and enters the corresponding L-shaped pin hole to a set depth, completing the pre-pressing of each L-shaped pin.

[0084] Step 6, L-shaped lifting limiting plate avoidance: the L-shaped lifting limiting plate is raised in height, and the bottom surface of the L-shaped lifting limiting plate is not lower than the top surface height of the electrical interface part of each L-shaped pin.

[0085] Step 7, secondary compression of L-shaped pin: the L-shaped horizontal push plate slides forward again to a set distance, so that all L-shaped pins are separated from the L-shaped positioning bottom plate, and the insertion part of the L-shaped pin is fully inserted into the corresponding L-shaped pin hole, thereby completing the synchronous positioning and compression of all L-shaped pins and the L-shaped shell.

[0086] Step 8, reset: the L-shaped shell compression plate rises in height, releasing the compression on the completed L-shaped shell, and the completed L-shaped shell enters the next process, and the L-shaped horizontal push plate is reset; the L-shaped pin positioning and compression station enters a new L-shaped shell to be compressed, and steps 1 to 8 are repeated to compress the L-shaped pin of the next L-shaped shell to be compressed.

[0087] The L-shaped pin limiting groove in step 3 is a trumpet groove, and the flared end of the trumpet groove faces the L-shaped horizontal push plate; during the L-shaped pin pre-compression in step 5, the trumpet groove can conveniently guide the L-shaped pin to enter, preventing the pre-compression deformation of the insertion part of the L-shaped pin.

[0088] In step 8, the L-shaped horizontal push plate slides horizontally towards the L-shaped pin hole under the drive of the horizontal compression assembly, and is automatically reset under the action of the horizontal reset spring.

[0089] The above describes the preferred embodiments of the application, but the application is not limited to the specific details in the above embodiments, and various equivalent transformations of the technical solutions of the application can be made within the technical concept of the application, and these equivalent transformations all belong to the protection scope of the application.

Claims

1. An L-shaped pin positioning and pressing structure, characterized in that: The L-shaped shell pressing plate and the L-shaped positioning tool are included; The L-shaped pin is in L-shaped, including an integral plug-in part, an L-shaped bending part and an electrical interface part; wherein the plug-in part is horizontally arranged, and the electrical interface part is vertically arranged; The L-shaped shell is located in the L-shaped pin positioning and pressing station, and has a plurality of L-shaped pin holes arranged horizontally and side by side; The L-shaped shell pressing plate is located above the L-shaped pin positioning and pressing station, and the height can be lifted; when the height of the L-shaped shell pressing plate is lowered, the top surface of the L-shaped shell located on the L-shaped pin positioning and pressing station can be pressed and positioned; The side of the L-shaped shell pressing plate facing the L-shaped pin hole is provided with an L-shaped through positioning groove; The L-shaped positioning tool includes an L-shaped positioning bottom plate, an L-shaped lifting limiting plate and an L-shaped horizontal push plate; The L-shaped positioning bottom plate is suspended and arranged at the bottom of the L-shaped through positioning groove, can be lifted synchronously with the L-shaped shell pressing plate, and can extend into the inner cavity of the L-shaped shell; The L-shaped lifting limiting plate and the L-shaped horizontal push plate are oppositely arranged on both sides of the L-shaped positioning bottom plate, wherein the L-shaped lifting limiting plate faces the L-shaped pin hole, the height of the L-shaped lifting limiting plate can be lifted, and the bottom of the L-shaped lifting limiting plate is provided with L-shaped pin limiting grooves equal to the number of the L-shaped pin holes and corresponding to each other; the bottom end of each L-shaped pin limiting groove is open; The L-shaped horizontal push plate can slide horizontally towards the L-shaped lifting limiting plate under the drive of external force.

2. The L-shaped pin positioning press-fitting structure according to claim 1, characterized in that: Each L-shaped pin limiting groove is a horn groove, the flared end of the horn groove faces the L-shaped horizontal push plate, and the width is greater than that of the L-shaped pin hole; the narrow end of the horn groove faces the L-shaped pin hole, and the width is equal to that of the L-shaped pin hole.

3. The L-shaped pin positioning press-fitting structure according to claim 2, characterized in that: The horn groove is not less than 1.5 times the size of the L-shaped pin hole.

4. The L-shaped pin positioning press-fitting structure according to claim 1, characterized in that: It also includes a shell transmission line for L-shaped shell transmission, and the shell transmission line has an L-shaped pin positioning and pressing station; each L-shaped pin hole is perpendicular to the shell transmission line.

5. The L-shaped pin positioning press-fitting structure according to claim 1, characterized in that: It also includes an L-shaped lifting assembly arranged on one side of the L-shaped pin positioning and pressing station, for driving the height of the L-shaped shell pressing plate to be lifted.

6. The L-shaped pin positioning press-fitting structure according to claim 1, characterized in that: It also includes a horizontal pressing assembly for driving the horizontal sliding of the L-shaped horizontal push plate.

7. The L-shaped pin positioning press-fitting structure according to claim 1, characterized in that: An electrical interface part push plate is arranged on the wall surface of the L-shaped horizontal push plate facing the L-shaped lifting limiting plate, and the electrical interface part push plate has a gap with the L-shaped positioning bottom plate, and the gap is not less than the thickness of the plug-in part.

8. A positioning and press-fitting method of L-shaped pins, characterized by: The method includes the following steps: Step 1, pressing the L-shaped shell: the L-shaped shell pressing plate carrying the L-shaped positioning tool is lowered synchronously until the L-shaped shell pressing plate presses and positions the top surface of the L-shaped shell located on the L-shaped pin positioning and pressing station; Step 2, aligning the position of the L-shaped positioning bottom plate: while the L-shaped positioning bottom plate presses the L-shaped shell, the L-shaped positioning bottom plate extends into the inner cavity of the L-shaped shell, and the top surface of the L-shaped positioning bottom plate is flush with the bottom surface of the L-shaped pin hole; Step 3, forming a closed L-shaped pin limiting groove: the height of the L-shaped lifting limiting plate is lowered until it is in contact with the top surface of the L-shaped positioning bottom plate, so that each L-shaped pin limiting groove with an open bottom is surrounded by the L-shaped positioning bottom plate, forming a closed L-shaped pin limiting groove; Step 4, placing L-shaped pins: place L-shaped pins equal to the number of L-shaped pin holes between the L-shaped lifting limiting plate and the L-shaped horizontal push plate on the top surface of the L-shaped positioning base plate; wherein the insertion part of the L-shaped pin is in direct contact with the top surface of the L-shaped positioning base plate; the insertion part of the L-shaped pin points to the corresponding closed L-shaped pin limiting slot; the electrical interface part of the L-shaped pin faces the L-shaped horizontal push plate; Step 5, L-shaped pin pre-pressing: the L-shaped horizontal push plate horizontally slides towards the L-shaped lifting limiting plate, and in the sliding process, the electrical interface part of all L-shaped pins placed on the L-shaped positioning base plate is in contact with the outer wall; the L-shaped horizontal push plate continues to horizontally slide towards the L-shaped lifting limiting plate to a set distance, the insertion part of each L-shaped pin passes through the corresponding closed L-shaped pin limiting slot in turn, and enters the corresponding L-shaped pin hole to a set depth, completing the pre-pressing of each L-shaped pin; Step 6, L-shaped lifting limiting plate avoidance: the L-shaped lifting limiting plate is raised in height, and the bottom surface of the L-shaped lifting limiting plate is not lower than the top surface height of the electrical interface part of each L-shaped pin; Step 7, L-shaped pin secondary pressing: the L-shaped horizontal push plate horizontally slides forward again to a set distance, so that all L-shaped pins are separated from the L-shaped positioning base plate, and the insertion part of the L-shaped pin is completely inserted into the corresponding L-shaped pin hole, thereby completing the synchronous positioning and pressing of all L-shaped pins and the L-shaped shell; Step 8, reset: the L-shaped shell pressing plate is raised in height, releasing the pressing of the L-shaped shell that has completed the pressing, and the L-shaped shell that has completed the pressing enters the next process, and the L-shaped horizontal push plate is reset; the L-shaped pin positioning and pressing station enters a new L-shaped shell to be pressed, and steps 1 to 8 are repeated to press the L-shaped pin of the next L-shaped shell to be pressed.

9. The L-pin positioning press fitting method according to claim 8, characterized by: The L-shaped pin limiting slot in step 3 is a trumpet slot, and the flared end of the trumpet slot faces the L-shaped horizontal push plate; in the L-shaped pin pre-pressing process of step 5, the trumpet slot can conveniently guide the L-shaped pin to enter, preventing the pre-pressing deformation of the insertion part of the L-shaped pin.

10. The L-pin positioning press fitting method according to claim 8, characterized by: In step 8, the L-shaped horizontal push plate horizontally slides towards the L-shaped pin hole under the drive of the horizontal pressing assembly, and automatically resets under the action of the horizontal reset spring.

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