Multi-specification combined plastic parts shared assembly system

Abstract

This invention belongs to the field of intelligent manufacturing technology and discloses a multi-specification combined plastic part sharing assembly system, including equipment 1, equipment 2, equipment 3, and equipment 4 connected sequentially by a conveying device; each of equipment 1, equipment 2, equipment 3, and equipment 4 includes a turntable and multiple housing carriers arranged along the circumference of the turntable; the housing carriers are used to position the housings and fix them to the turntable; equipment 1 also includes an assembly device 1 for installing a sealing ring into the housing; equipment 2 also includes an assembly device 2 for installing a terminal holding auxiliary structure into the housing, an assembly device 3 for installing a slider 1 into the housing, and an assembly device 4 for installing a slider 2 into the housing, with assembly devices 2, 3, and 4 distributed along the circumference of the turntable of equipment 2; equipment 3 also includes an assembly device 5 for installing a sealing gasket into the housing and an assembly device 6 for installing a cap into the housing, with assembly devices 5 and 6 distributed along the circumference of the turntable of equipment 3; equipment 4 also includes an assembly device 7 for installing a handle into the housing.

Description

Technical Field

[0001] This invention belongs to the field of intelligent manufacturing technology, specifically relating to a shared assembly system for multi-specification combined plastic parts. Background Technology

[0002] Composite plastic parts, such as connectors in the field of electronic components, typically include housings, terminal retaining aids (TPAs), caps (CAPs), handles, and sealing rings. Depending on the circuit size, composite plastic parts come in various specifications. In the existing technology, each specification requires separate equipment for assembly, with separate feeding devices, assembly devices, and CCD inspection devices, resulting in high investment costs. Summary of the Invention

[0003] In order to solve the technical problem that the investment cost of configuring a separate assembly equipment for each specification of combined plastic parts is high in the existing technology, the purpose of this invention is to provide a shared assembly system for multi-specification combined plastic parts.

[0004] The technical solution adopted in this invention is as follows:

[0005] A multi-specification combined plastic parts shared assembly system includes equipment 1, equipment 2, equipment 3, and equipment 4 connected sequentially via a conveying device. Each of equipment 1, 2, 3, and 4 includes a turntable and multiple housing carriers arranged along the circumference of the turntable. The housing carriers are used to position and fix the housings to the turntable. Equipment 1 further includes an assembly device 1 for inserting a sealing ring into the housing. Equipment 2 further includes an assembly device 2 for inserting a terminal holding auxiliary structure into the housing, an assembly device 3 for inserting a slider 1 into the housing, and an assembly device 4 for inserting a slider 2 into the housing. Assembly devices 2, 3, and 4 are distributed along the circumference of the turntable of equipment 2. Equipment 3 further includes an assembly device 5 for inserting a sealing gasket into the housing and an assembly device 6 for inserting a cap into the housing. Assembly devices 5 and 6 are distributed along the circumference of the turntable of equipment 3. Equipment 4 further includes an assembly device 7 for inserting a handle into the housing.

[0006] As a further optional embodiment of the multi-specification combined plastic parts shared assembly system, equipment one, equipment two, equipment three, and equipment four are arranged in a rectangular configuration; or,

[0007] The third device is connected to a fifth device for punching caps; the fifth device includes a punching device and a transfer device for transferring punched caps to the third device; the punching device includes a die, a press for driving the die to punch, and a cap carrier for positioning the cap; the die includes a body, a punch, a reset device, and a limiting device; the body has a limiting structure; multiple punches and limiting devices are provided and correspond one-to-one, and the punch is configured to slide within the range defined by the limiting structure and the reset device; the reset device has a first telescopic part, which extends along the movement direction of the die and is used to reset the punch when the punch is in the initial mode; the limiting device has a second telescopic part, which extends in a direction perpendicular to the movement direction of the die when the punch corresponding to the limiting device is in the punching mode and is used to fix a part of the punch between the second telescopic part and the limiting structure.

[0008] As a further optional embodiment of the multi-specification combined plastic parts shared assembly system, the transfer device includes a cap turntable and a robotic arm for transferring the caps from the cap turntable to the third device. Multiple cap carriers are arranged along the circumference of the cap turntable and fixed to it. At least two punching devices are arranged along the cap turntable; or...

[0009] The body has a stepped through hole, the punch is a stepped shaft that slides with the stepped through hole, and the stepped surface of the stepped through hole is the limiting structure; or,

[0010] The reset device includes multiple ejector pins corresponding one-to-one with multiple punches and a reset drive unit that drives the multiple ejector pins to extend and retract along the movement direction of the die, wherein the ejector pins are the first telescopic part; or,

[0011] A discharge plate is provided between the main body and the cap carrier. The discharge plate is connected to the main body, and a discharge spring is provided between the discharge plate and the main body. The discharge plate is slidably engaged with the punch.

[0012] As a further optional embodiment of the multi-specification combined plastic parts shared assembly system, the limiting device includes a telescopic rod and a limiting drive unit that drives the telescopic rod to extend and retract in a direction perpendicular to the direction of die movement, wherein the telescopic rod is the second telescopic part.

[0013] As a further optional embodiment of the multi-specification combined plastic part shared assembly system, the assembly device seven includes a clamping device for clamping a handle, a robotic arm two for driving the clamping device to move to insert the clamped handle into the housing, and a spreading structure for spreading the housing. The spreading structure includes a spreading component and a lifting drive component. The spreading component includes two oppositely arranged spreading fingers and a finger drive component for driving the spreading fingers to open and close. When the assembly device seven is in the assembly mode, the lifting drive component is used to drive the spreading structure to move, so that the two spreading fingers are inserted into the gap where the handle is mounted on the housing. The finger drive component is used to drive the two spreading fingers to open, widening the gap where the handle is mounted on the housing. The robotic arm two is used to drive the handle on the clamping device to be inserted into the housing.

[0014] As a further optional embodiment of the multi-specification combined plastic parts shared assembly system, it also includes a clamping mechanism for clamping slide one and slide two; the clamping mechanism includes two elastic clamping parts that respectively contact slide one and slide two and can elastically clamp, and a clamping drive unit that drives the two elastic clamping parts to move along the insertion direction of slide one and slide two.

[0015] As a further optional embodiment of the multi-specification combined plastic parts shared assembly system, the elastic clamping part includes two limiting blocks arranged at intervals along the insertion directions of the first and second slides, and a clamping shaft slidably disposed along the insertion directions of the first and second slides; the clamping shaft is stepped in shape with a thicker middle and thinner ends, and the two ends of the clamping shaft are respectively slidably engaged with the two limiting blocks, with the end of the clamping shaft near the housing extending out of the corresponding limiting block, and a clamping spring is disposed between the clamping shaft and at least one of the limiting blocks. When the elastic clamping part is in the clamping state, the clamping spring is used to provide clamping force for the first and second slides.

[0016] As a further optional embodiment of the multi-specification combined plastic parts shared assembly system, the assembly device seven also includes an elastic clamping structure for clamping the housing, the elastic clamping structure being fixed to the output end of the lifting drive component and rising and falling simultaneously with the spreading structure.

[0017] As a further optional embodiment of the multi-specification combined plastic parts shared assembly system, the finger driving component includes a base, a rotating shaft rotatably supported on the base, two end face cams fixed to the rotating shaft, a motor driving the rotating shaft to rotate, a movable seat fixed to the output end of the lifting driving component, and two cam follower components respectively connected to the two end face cams; the two cam follower components are slidably connected to the base along a direction parallel to the rotating shaft, and each cam follower component has two driven rollers at one end and driven rollers at the other end; the outer circular surfaces of the two driven rollers are tangent to the two end faces of the end face cams respectively; two spreading fingers are slidably connected to the movable seat along their spreading direction, and the spreading fingers have a sliding groove along the lifting direction of the spreading structure, and the driven rollers are located in the sliding groove and are adapted to the sliding groove.

[0018] As a further optional solution for the multi-specification combined plastic parts shared assembly system, the elastic clamping structure includes a clamping block slidably connected to the movable seat along the lifting direction of the spreading structure and a second clamping spring disposed between the clamping block and the movable seat. When the elastic clamping part is in the clamping state, the second clamping spring is used to provide clamping force for the clamping housing.

[0019] The beneficial effects of this invention are as follows:

[0020] The assembly process, which can be completed on one machine, is broken down into four machines: Machine 1, Machine 2, Machine 3, and Machine 4. Since the outer contour dimensions of the components of different specifications of combined plastic parts are the same, and only the number of holes in the Terminal Holding Auxiliary Structure (TPA), Cap (CAP), and Sealing Gasket differs, the housing carriers used for positioning the housings can be interchangeable. When assembling a certain specification of combined plastic parts, the turntable can sequentially rotate the corresponding multiple housing carriers to the corresponding assembly devices. The assembly devices, CCD detection devices, conveying devices, and feeding devices can all be shared. Compared with configuring a separate assembly machine for each specification of combined plastic parts, this reduces the number of assembly devices, CCD detection devices, feeding devices, etc., thereby greatly reducing costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a composite plastic part assembled by the multi-specification composite plastic part sharing assembly system of the present invention.

[0022] Figure 2 This is a schematic diagram of the assembly structure of a multi-specification combined plastic parts sharing assembly system according to an embodiment of the present invention.

[0023] Figure 3 yes Figure 2 The diagram shows the structure of device five in the multi-specification combined plastic parts sharing assembly system.

[0024] Figure 4 yes Figure 2The diagram shows the structure of the punching device in a multi-specification combined plastic parts sharing assembly system.

[0025] Figure 5 yes Figure 1 The diagram shows the arrangement of holes in the cap of the assembled plastic part.

[0026] Figure 6 yes Figure 2 The diagram shows the structure of the die in a multi-specification combined plastic parts sharing assembly system.

[0027] Figure 7 yes Figure 2 The diagram shows the structure of equipment four in the multi-specification combined plastic parts sharing assembly system.

[0028] Figure 8 yes Figure 2 The diagram shows the structure of assembly device seven in a multi-specification combined plastic parts sharing assembly system.

[0029] Figure 9 yes Figure 2 The diagram shows a structural schematic of the spread-out structure in a multi-specification combined plastic parts sharing assembly system.

[0030] Figure 10 yes Figure 9 Top view.

[0031] Figure 11 yes Figure 2 The diagram shows the structure of the clamping mechanism in a multi-specification combined plastic parts sharing assembly system.

[0032] Figure 12 yes Figure 2 The diagram shows the structure of equipment one in the multi-specification combined plastic parts sharing assembly system.

[0033] Figure 13 yes Figure 2 The diagram shows the structure of assembly device one in a multi-specification combined plastic parts sharing assembly system.

[0034] In the diagram: 1000 - Equipment 1; 1100 - Turntable 1; 1200 - Housing Carrier 1; 1300 - Assembly Device 1; 1310 - Gripping Module 2; 1320 - Opening Mechanism; 1321 - Opening Finger; 1322 - Guide Rail Slide Table Parallel Finger Gripper 1; 1323 - Lifting Cylinder; 1330 - Clamping Device 1; 1340 - Clamping Device 2; 1341 - Core Block; 1342 - Push Sleeve; 1400 - Housing Feeding Equipment; 1500 - Sealing Ring Feeding Equipment; 2000 - Equipment 2; 2100 - Turntable 2; 2200 - Housing Carrier 2; 2300 - Assembly Device 2; 2400 - Assembly Device 3; 2500 - Assembly Device 4; 2600 - Terminal Holding Auxiliary Structure Feeding Equipment; 2700 - Sliding plate feeding device 1; 2800 - Sliding plate feeding device 2; 3000 - Device 3; 3100 - Turntable 3; 3200 - Housing carrier 3; 3300 - Assembly device 5; 3400 - Assembly device 6; 3500 - Sealing gasket feeding device; 3600 - Cap feeding device; 4000 - Device 4; 4100 - Turntable 4; 4200 - Housing carrier 4; 4300 - Assembly device 7; 4310 - Clamping device; 4320 - Robotic arm 2; 4330 - Spreading structure; 4331 - Spreading component; 43311 - Spreading finger; 433111 - Slide groove; 43312 - Finger driving component; 433121 - Base; 433122 - Rotating shaft; 433123 - End face cam; 43312 4-Motor; 433125-Moving seat; 433126-Cam follower component; 4331261-Driven roller one; 4331262-Driven roller two; 4332-Lifting drive component; 43321-Telescopic cylinder three; 4340-Pressure clamping mechanism; 4341-Elastic pressure clamping part; 43411-Limit block; 43412-Pressure clamping shaft; 43413-Pressure spring one; 4342-Pressure clamping drive unit; 43421-Telescopic cylinder four; 4350-Elastic pressure clamping structure; 4351-Pressure clamping block; 4352-Pressure spring two; 4400-Handle feeding device; 5000-Equipment five; 5100-Punching device; 5110-Punching die; 5111-Body; 51111-Limiting structure; 51 112-Stepped through hole; 51113-Mounting block one; 51114-Mounting block two; 5112-Punch; 5113-Reset device; 51131-Ejector pin; 51132-Reset drive unit; 51133-First telescopic part; 51134-Telescopic cylinder one; 5114-Limiting device; 51141-Telescopic rod; 51142-Limiting drive unit; 511421-Telescopic cylinder two; 511422-Reset spring; 51143-Second telescopic part; 5115-Unloading plate; 5116-Unloading spring; 5120-Press; 5130-Cap carrier; 5200-Transfer device; 5210-Cap turntable; 5220-Robot arm one; 6000-Assembled plastic part; 6100-Housing shell;6200 - Sealing ring; 6300 - Terminal holding auxiliary structure; 6400 - Sliding piece one; 6500 - Sliding piece two; 6600 - Sealing gasket; 6700 - Cap; 6701 - First hole; 6702 - Second hole; 6703 - Third hole; 6704 - Fourth hole; 6705 - Fifth hole; 6706 - Sixth hole; 6707 - Seventh hole; 6708 - Eighth hole; 6800 - Handle; 7000 - Conveying device. Detailed Implementation

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is 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.

[0036] The technical solutions provided by the present invention will be described in detail below with reference to the accompanying drawings and through embodiments. It should be noted that these descriptions of embodiments are for the purpose of helping to understand the present invention, but do not constitute a limitation thereof.

[0037] In some instances, because some implementation methods are existing or conventional technologies, they are not described or are not described in detail.

[0038] Furthermore, the technical features described herein, or the steps in all the methods or processes disclosed herein, may be combined in any suitable manner in one or more embodiments, except for mutually exclusive features and / or steps. It will be readily understood by those skilled in the art that the order of steps or operations of the methods relating to the embodiments provided herein may also be altered. Any order in the drawings and embodiments is for illustrative purposes only and does not imply a requirement to follow a particular order unless explicitly stated otherwise.

[0039] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, under reasonable circumstances (without self-contradiction), include both direct and indirect connections (linkages).

[0040] A type of composite plastic part 6000 assembled using the composite plastic part 6000 assembly system of the present invention, such as... Figure 1As shown, the assembled plastic part 6000 includes a housing 6100, a terminal retaining auxiliary structure 6300 (TPA), a cap 6700 (CAP), a handle 6800, a slider 6400, a slider 6500, a sealing ring 6200, and a sealing gasket 6600. The housing 6100 is generally rectangular and has three cavities along its width. The cap 6700 (CAP) and the sealing gasket 6600 are inserted into the middle cavity of the housing 6100 from top to bottom. The terminal retaining auxiliary structure 6300 (TPA) and the sealing ring 6200 are inserted into the middle cavity of the housing 6100 from bottom to top. Slider 6400 and slider 6500 are inserted into the middle cavity of the housing 6100 from bottom to top. Figure 1 The paper is inserted into the two cavities of the housing 6100 from the paper side; the handle 6800 is inserted into the two cavities of the housing 6100 from top to bottom and cooperates with the slider 1 6400 and slider 2 6500 respectively.

[0041] like Figure 2 As shown, the assembly system for the combined plastic part 6000 in this embodiment includes equipment 1000, equipment 2000, equipment 3000, and equipment 4000 connected sequentially via a conveying device 7000. Equipment 1000, equipment 2000, equipment 3000, and equipment 4000 each include a turntable and multiple housing carriers arranged circumferentially along the turntable. The housing carriers are used to position the housing 6100. Equipment 1000 also includes assembly device 1300 for installing the sealing ring 6200 into the housing 6100. Equipment 2000 further includes assembly device 2300 for installing the terminal holding auxiliary structure 6300 into the housing 6100, and assembly device 2300 for installing the sliding plate 6400 into... Assembly device 3 2400 for housing 6100 and assembly device 4 2500 for inserting slide 2 6500 into housing 6100, assembly devices 2 2300, 2400 and 4 2500 are distributed around the circumference of the turntable of device 2 2000; device 3 3000 also includes assembly device 5 3300 for inserting gasket 6600 into housing 6100 and assembly device 6 3400 for inserting cap 6700 into housing 6100, assembly devices 5 3300 and 6 3400 are distributed around the circumference of the turntable of device 3 3000; device 4 4000 also includes assembly device 7 4300 for inserting handle 6800 into housing 6100.

[0042] The turntable can be any of the following: a cam divider, a DD motor, or a servo motor 433124, etc. This invention is not limited to any particular type, as long as it can drive the housing carrier to rotate. In this embodiment, the turntable includes a DD motor and an annular disk mounted on the output end of the DD motor, with the housing carrier fixed to the corresponding annular disk.

[0043] To facilitate the assembly of the sealing ring 6200 and the terminal holding auxiliary structure 6300, the housing 6100 can be flipped between the second device 2000 and the third device 3000. For example, a part of the conveying device 7000 can be made to rotate, or a robot arm can be set to flip the housing 6100 sent out by the second device 2000 by 180 degrees before placing it into the conveying device 7000; or a robot arm can be set before entering the third device 3000 to flip the housing 6100 by 180 degrees before placing it into the housing carrier 3200 of the third device 3000. Obviously, there are many other structures that can achieve the 180-degree flip of the housing 6100, which will not be listed here, and the flipping methods listed above should not be construed as limitations on the present invention. By rotating the housing 6100 by 180 degrees, the sealing ring 6200 and the terminal retaining auxiliary structure 6300 are assembled from top to bottom in both device 1000 and device 2000. Then, by rotating the housing 6100 by 180 degrees, the sealing gasket 6600, the cap 6700 and the handle 6800 are assembled from top to bottom in device 3000 and device 4000.

[0044] The conveying device 7000 can be a belt conveyor, a single-axis robot, a linear vibrating feeder, etc. This invention does not limit it, as long as it can transfer the housing 6100 between various devices.

[0045] The housing carrier may have a contoured groove that adapts to the outer contour of the housing 6100, thereby positioning the housing 6100. In some embodiments, the housing carrier may be configured as a plurality of positioning blocks distributed in a rectangle, the rectangle adapting to the outer contour of the housing carrier. The positioning blocks on one set of two adjacent sides of the rectangle are configured to be elastically telescopic, for example, the positioning blocks are configured as fixed blocks and telescopic blocks, with a compression spring provided between the fixed blocks and the telescopic blocks, so that the positioning blocks on the other set of two adjacent sides serve as positioning references, and the elastically telescopic positioning blocks clamp the housing 6100.

[0046] The turntables of Equipment 1 (1000), Equipment 2 (2000), Equipment 3 (3000), and Equipment 4 (4000) are Turntable 1 (1100), Turntable 2 (2100), Turntable 3 (3100), and Turntable 4 (4100), respectively. The housing carriers of Equipment 1 (1000), Equipment 2 (2000), Equipment 3 (3000), and Equipment 4 (4000) are Housing Carrier 1 (1200), Housing Carrier 2 (2200), Housing Carrier 3 (3200), and Housing Carrier 4 (4200), respectively. The working principle of the 6000 assembled plastic part assembly system in this embodiment is as follows:

[0047] The housing 6100 is placed on the housing carrier 1200. The turntable 1100 rotates the housing carrier 1200 containing the housing 6100 to the assembly device 1300. The assembly device 1300 installs the sealing ring 6200 onto the housing 6100. The turntable 1100 continues to rotate the housing carrier 1200 containing the housing 6100 out of the assembly device 1300. The conveying device 7000 then transports the housing 6100 with the sealing ring 6200 installed to... The housing carrier 2200 of device 2000 and the turntable 2100, carrying the housing carrier 2200 containing housing 6100, are respectively rotated to assembly devices 2300, 32400 and 42500. Assembly devices 2300, 32400 and 42500 respectively install terminal holding auxiliary structure 6300, slider 1 6400 and slider 2 6500 onto housing 6100. Turntable 1100... The housing carrier 2200 containing housing 6100 continues to rotate out; the conveyor 7000 delivers housing 6100 to housing carrier 3200 of equipment 3000. The turntable 3100, carrying housing carrier 3200 containing housing 6100, rotates to assembly device 5 3300 and assembly device 6 3400 respectively. Assembly device 5 3300 and assembly device 6 3400 install sealing gasket 6600 and cap 6700 onto housing 6100 respectively. 0. Turntable 3100 continues to rotate out with housing carrier 3200 containing housing 6100. Conveying device 7000 sends housing 6100 to housing carrier 4200 of device 4000. Turntable 4100 rotates housing carrier 4200 containing housing 6100 to assembly device 7300. Assembly device 7300 inserts handle 6800 into housing 6100. This cycle repeats until all combined plastic parts 6000 are assembled.

[0048] like Figure 2 As shown, devices 1 (1000), 2 (2000), 3 (3000), and 4 (4000) are all equipped with feeding devices. Specifically, device 1 (1000) is connected to a housing feeding device 1400 and a sealing ring feeding device 1500; device 2 (2000) is connected to a terminal holding auxiliary structure feeding device 2600, a sliding plate feeding device 2700, and a sliding plate feeding device 2800; device 3 (3000) is connected to a sealing gasket feeding device 3500 and a cap feeding device 3600; and device 4 (4000) is connected to a handle feeding device 4400. The feeding devices can be vibratory feeders or similar methods. In some embodiments, such as... Figure 2 As shown, Equipment 1 (1000), Equipment 2 (2000), Equipment 3 (3000), and Equipment 4 (4000) are arranged in a rectangular pattern. Compared with other layouts, the rectangular pattern can shorten the walking distance between operators, reduce the labor intensity of operators, and reduce the time for replenishing materials to the feeding equipment.

[0049] The number of holes in the cap 6700 varies for different specifications of the combined plastic parts 6000. If a separate punching device is configured for each specification of the combined plastic parts 6000, the diameter of the annular disc of the equipment 3000 will increase. Furthermore, since the punching devices cannot overlap, only one specification of the combined plastic parts 6000 has its sealing gasket 6600 assembled simultaneously with the punching process. The sealing gaskets 6600 and caps 6700 for other specifications of the combined plastic parts 6000 are not synchronized, resulting in waiting time and a slower production cycle. Therefore, in some embodiments, such as... Figure 2 As shown, a fifth device 5000 is set up between device 3000 and cap feeding device 3600 for punching cap 6700; in this way, punching is completed by device 5000 alone, while device 3000 is only responsible for assembling gasket 6600 and cap 6700. Gasket 6600 and cap 6700 of different specifications of combined plastic parts 6000 are assembled simultaneously in device 3000, resulting in higher production efficiency.

[0050] like Figure 3 As shown, in some embodiments, device 5000 may include a punching device 5100 and a transfer device 5200 for transferring the punched cap 6700 to device 3000; the punching device 5100 includes a die 5110, a press 5120 for driving the die 5110 to punch, and a cap carrier 5130 for positioning the cap 6700; as Figure 4 As shown, the die 5110 includes a body 5111, a punch 5112, a reset device 5113, and a limiting device 5114; the body 5111 has a limiting structure 51111; multiple punches 5112 and limiting devices 5114 are provided and correspond one-to-one, and the punch 5112 is configured to slide within the range defined by the limiting structure 51111 and the reset device 5113; the reset device 5113 has a first telescopic part 51133, which, when the punch 5112 is in the initial position... In the punching mode, the first telescopic part 51133 extends along the movement direction of the die 5110 and is used to reset the punch 5112; the limiting device 5114 has a second telescopic part 51143. When the punch 5112 corresponding to the limiting device 5114 is in the punching mode, the second telescopic part 51143 extends in a direction perpendicular to the movement direction of the die 5110 and is used to fix a part of the punch 5112 between the second telescopic part 51143 and the limiting structure 51111.

[0051] Understandably, the number of punches 5112 covers the number of holes in the caps 6700 of all sizes of the combined plastic parts 6000. During punching, the second telescopic part 51143 of the limiting device 5114 corresponding to the number of holes in the cap 6700 extends to fix the corresponding punch 5112. Then, the press 5120 drives the die 5110 to move towards the cap 6700. The fixed punches 5112 punch away the connecting material in the holes of the cap 6700, while other punches 5112, since they are not fixed, retract after contacting the cap 6700. After completing the punching, the press 5120 drives the die 5110 back. When changing to a cap 6700 of another size, the first telescopic part 51133 of the reset device 5113 extends to reset the punch 5112, and then the second telescopic part 51143 of the limiting device 5114 corresponding to that size extends to fix the corresponding punch 5112.

[0052] The transfer device 5200 can be a single-axis robot, a synchronous belt conveyor, etc., and this invention does not limit it, as long as it can realize the positional change of the cap 6700. In some embodiments, such as Figure 3 As shown, the transfer device 5200 may include a cap turntable 5210 and a robotic arm 5220 for transferring the cap 6700 from the cap turntable 5210 to the device 3000. Multiple cap carriers 5130 are arranged along the circumference of the cap turntable 5210 and fixed to it. The cap turntable 5210 may have the same structure as the aforementioned turntable 1100, turntable 2100, turntable 3100, or turntable 4100, or may adopt other forms. Considering the small hole spacing of the cap 6700, a single punching device 5100 covering all sizes of the combined plastic parts 6000 might result in the second telescopic portion 51143 of the limiting device 5114 being too small, thus reducing strength and increasing the frequency of replacement. Therefore, in some embodiments, at least two punching devices 5100 are arranged along the cap turntable 5210, allowing for flexible arrangement of the punches 5112 and the limiting device 5114, increasing strength and reducing the frequency of replacing the limiting device 5114. For example, for the small-pitch cap 6700, the punches 5112 of the punching device 5100 are arranged at intervals. For ease of explanation, as shown... Figure 5As shown, assuming the holes of the cap 6700 from one end to the other are the first hole 6701, the second hole 6702, the third hole 6703, the fourth hole 6704, the fifth hole 6705, the sixth hole 6706, the seventh hole 6707, and the eighth hole 6708, taking two punching devices 5100 as an example, the punch 5112 of one punching device 5100 corresponds to the first hole 6701, the third hole 6703, the fifth hole 6705, and the seventh hole 6707, while the punch 5112 of the other punching device 5100 corresponds to the second hole 6702, the fourth hole 6704, the sixth hole 6706, and the eighth hole 6708, thereby increasing the distance between the punches 5112, indirectly increasing the distance between the limiting devices 5114, thus allowing the size of the second telescopic part 51143 to be made larger and improving its strength.

[0053] In some implementations, such as Figure 6 As shown, the body 5111 has a stepped through hole 51112, the punch 5112 is a stepped shaft that slides with the stepped through hole 51112, and the stepped surface of the stepped through hole 51112 is a limiting structure 51111.

[0054] In some implementations, such as Figure 6 As shown, the reset device 5113 includes a plurality of ejector pins 51131 corresponding one-to-one with a plurality of punches 5112 and a reset drive unit 51132 that drives the plurality of ejector pins 51131 to extend and retract along the movement direction of the die 5110. The ejector pins 51131 are the first telescopic portions 51133. The reset drive unit 51132 can be a drive device that drives the load to perform linear motion, such as a cylinder, a crank-slider mechanism, etc. In some embodiments, such as... Figure 6 As shown, the reset drive unit 51132 is a telescopic cylinder 51134. The cylinder body of the telescopic cylinder 51134 is fixed to the output end of the press 5120, and the piston rod of the telescopic cylinder 51134 is connected to multiple ejector pins 51131.

[0055] In some implementations, such as Figure 6As shown, a discharge plate 5115 is provided between the body 5111 and the cap carrier 5130. The discharge plate 5115 is connected to the body 5111, and a discharge spring 5116 is provided between the discharge plate 5115 and the body 5111. The discharge plate 5115 is in sliding engagement with the punch 5112. The discharge plate 5115 can be connected to the body 5111 by equalizing screws. By setting the unloading spring 5116 and the unloading plate 5115, when the press 5120 drives the die 5110 to move toward the cap 6700, the unloading plate 5115 first contacts the cap 6700 and presses the cap 6700 with the unloading spring 5116. On the one hand, this prevents the cap 6700 from moving during the punching process, and on the other hand, it can guide the punch 5112. When the punch 5112 returns, the unloading plate 5115 continues to press the cap 6700 under the action of the unloading spring 5116, preventing the punch 5112 from lifting the cap 6700.

[0056] In some implementations, such as Figure 6 As shown, the limiting device 5114 includes a telescopic rod 51141 and a limiting drive unit 51142 that drives the telescopic rod 51141 to extend and retract in a direction perpendicular to the movement direction of the die 5110. The telescopic rod 51141 is a second telescopic part 51143. The limiting drive unit 51142 can be a drive device that drives the load to perform linear motion, such as a cylinder or a crank-slider mechanism. In some embodiments, such as... Figure 6 As shown, the limit drive unit 51142 includes a telescopic cylinder 511421 and a return spring 511422. The telescopic rod 51141 is in the shape of a stepped shaft. The body 5111 has a stepped hole adapted to the telescopic rod 51141. The return spring 511422 is a compression spring, with its two ends abutting against the stepped surface of the telescopic rod 51141 and the stepped surface of the stepped hole, respectively. The cylinder body of the telescopic cylinder 511421 is fixed to the body 5111. The piston rod of the telescopic cylinder 511421 abuts against the end of the telescopic rod 51141, that is, the telescopic rod 51141 is extended by the telescopic cylinder, and retracted by the return spring 511422. In some embodiments, such as Figure 6 As shown, the main body 5111 includes mounting block one 51113 and mounting block two 51114. Mounting block one 51113 and mounting block two 51114 are detachably connected. When the telescopic rod 51141 needs to be replaced, only mounting block one 51113 needs to be removed. There are fewer disassembled parts, making replacement more convenient and quick.

[0057] In some implementations, such as Figure 7 and Figure 8 As shown, the assembly device 7 4300 may include a clamping device 4310 for clamping the handle 6800, a robotic arm 2 4320 for driving the clamping device 4310 to move so as to insert the clamped handle 6800 into the housing 6100, and a spreading structure 4330 for spreading the housing 6100; as Figure 8 , Figure 9 and Figure 10 As shown, the spreading structure 4330 includes a spreading component 4331 and a lifting drive component 4332. The spreading component 4331 includes two opposing spreading fingers 43311 and a finger drive component 43312 for driving the spreading fingers 43311 to open and close. When the assembly device 7 4300 is in the assembly mode, the lifting drive component 4332 is used to drive the spreading structure 4330 to move, so that the two spreading fingers 43311 are inserted into the gap of the housing 6100 mounting handle 6800. The finger drive component 43312 is used to drive the two spreading fingers 43311 to open, thus widening the gap of the housing 6100 mounting handle 6800. The robotic arm 2 4320 is used to drive the handle 6800 on the clamping device 4310 to insert into the housing 6100. When turntable 4100 rotates housing 6100 to assembly device 7 4300, lifting drive component 4332 drives two spreading fingers 43311 to move towards housing 6100 and insert into the cavities on both sides of housing 6100 respectively. The cavities on both sides are the gaps in housing 6100 where handle 6800 is installed. Then, finger drive component 43312 drives the two spreading fingers 43311 to open, expanding the cavities on both sides. Robotic arm 2 4320 then inserts handle 6800 into housing 6100. Then, the two spreading fingers 43311 return to their original position, the cavities on both sides are restored, and the protrusions on both sides of the vertical arm of handle 6800 are inserted into the holes in the cavity wall of housing 6100 and the corresponding slots in the slides respectively. Lifting drive component 4332 drives the two spreading fingers 43311 to leave the cavities on both sides, completing the assembly of handle 6800. Because the handle 6800 is a thin sheet structure, and the line connecting the clamping point and the protrusion of the handle 6800 has a clamping mechanism in the direction of the handle 6800's insertion into the housing 6100, if the handle 6800 is directly and forcibly inserted into the housing 6100 using the robotic arm 4320, the handle 6800 will be subjected to a torque, which may prevent assembly from being completed and could damage both the handle 6800 and the housing 6100. Therefore, the present invention provides a spreading member 4331 to spread open the cavities on both sides of the housing 6100, avoiding the reaction force of the housing 6100 on the handle 6800 when it is inserted.

[0058] In some implementations, such as Figure 9 and Figure 10As shown, the finger drive component 43312 includes a base 433121, a rotating shaft 433122 rotatably supported on the base 433121, two end face cams 433123 fixed to the rotating shaft 433122, a motor 433124 driving the rotating shaft 433122 to rotate, a movable seat 433125 fixed to the output end of the lifting drive component 4332, and two cam follower components 433126 respectively connected to the two end face cams 433123; the two cam follower components 433126 are slidably connected to the base 433121 along a direction parallel to the rotating shaft 433122. 121. Each cam follower component 433126 has two driven rollers at one end and a driven roller 4331262 at the other end. The outer surfaces of the two driven rollers 4331261 are tangent to the two end faces of the end face cam 433123. Two spreading fingers 43311 are slidably connected to the moving seat 433125 along their spreading direction. The spreading fingers 43311 have a groove 433111 along the lifting direction of the spreading structure 4330. The driven roller 4331262 is located in the groove 433111 and is adapted to the groove 433111. In some embodiments, the lifting drive component 4332 is a telescopic cylinder 43321. The cylinder body of the telescopic cylinder 43321 is fixed to the base 433121, and the piston rod of the telescopic cylinder 43321 is connected to the lifting seat. Motor 433124 drives two end-face cams 433123 to rotate via shaft 433122, thereby driving two cam follower components 433126 to open and close two spreading fingers 43311. Timing control is achieved through the use of a cam mechanism. Typically, the housing carrier is configured with multiple positioning blocks arranged in a rectangular shape, which fits the outer contour of the housing carrier. One set of two adjacent positioning blocks on one side of the rectangle is elastically extendable; for example, the positioning blocks can be configured as fixed blocks and telescopic blocks, with a compression spring placed between them. The other set of two adjacent positioning blocks serves as a positioning reference, and the elastically extendable positioning blocks clamp the housing 6100. Therefore, when the housing 6100 is opened, the opening fingers 43311 first squeeze the elastically retractable positioning block with the housing 6100, leaving space for the other side of the housing 6100 to open. Then, the two opening fingers 43311 open the housing 6100 and insert the handle 6800. Compared with the controller and servo drive mechanism, the cam mechanism control is simpler and more reliable.

[0059] In some implementations, such as Figure 11As shown, the assembly device 7 4300 may further include a clamping mechanism 4340 for clamping the first slide 6400 and the second slide 6500; the clamping mechanism 4340 includes two elastic clamping parts 4341 that respectively contact the first slide 6400 and the second slide 6500 and can elastically clamp them, and a clamping drive unit 4342 that drives the two elastic clamping parts 4341 to move along the insertion direction of the first slide 6400 and the second slide 6500; the first slide 6400 and the second slide 6500 have grooves that are adapted to the protrusions on both sides of the handle 6800. After the first slide 6400 and the second slide 6500 are clamped by the clamping mechanism 4340 to ensure that the first slide 6400 and the second slide 6500 are in the correct position, the handle 6800 is then installed. In some embodiments, such as Figure 11 As shown, the clamping drive unit 4342 is a telescopic cylinder 43421.

[0060] The elastic clamping part 4341 may be at least partially made of an elastic material, such as urethane; it may also be a mechanism composed of elastic elements such as springs. In some embodiments, such as Figure 11 As shown, the elastic pressing part 4341 may include two limiting blocks 43411 arranged at intervals along the insertion direction of the first slider 6400 and the second slider 6500, and a pressing shaft 43412 slidably disposed along the insertion direction of the first slider 6400 and the second slider 6500. The pressing shaft 43412 is stepped in shape with a thicker middle and thinner ends. The two ends of the pressing shaft 43412 are respectively slidably engaged with the two limiting blocks 43411. The end of the pressing shaft 43412 near the housing 6100 extends out of the corresponding limiting block 43411. A pressing spring 43413 is disposed between the pressing shaft 43412 and at least one of the limiting blocks 43411. When the elastic pressing part 4341 is in the pressing state, the pressing spring 43413 is used to provide the pressing force for pressing the first slider 6400 and the second slider 6500.

[0061] In some implementations, such as Figure 9 and Figure 10 As shown, the assembly device 7 4300 may further include an elastic clamping structure 4350 for clamping the housing 6100. The elastic clamping structure 4350 is fixed to the output end of the lifting drive component 4332 and rises and falls simultaneously with the spreading structure 4330. Before the spreading finger 43311 is inserted into the housing 6100, the elastic clamping structure 4350 clamps the housing 6100 to ensure that the spreading finger 43311 is accurately inserted into the housing 6100. The elastic clamping structure 4350 may have the same structure as the elastic clamping part 4341. In some embodiments, such as Figure 9 and Figure 10As shown, the elastic pressing structure 4350 may include a pressing block 4351 slidably connected to the movable seat 433125 along the lifting direction of the spreading structure 4330 and a second pressing spring 4352 disposed between the pressing block 4351 and the movable seat 433125. When the elastic pressing part 4341 is in the pressing state, the second pressing spring 4352 is used to provide the pressing force for pressing the housing 6100.

[0062] The housing 6100 can be transferred from the housing loading device 1400 to the housing carrier 1200 of the turntable 1100 by a robotic arm. In some embodiments, such as Figure 12 As shown, the housing 6100 is placed onto the housing carrier 1200 on the turntable 1100 via the gripping module 1. The gripping module 1 is located between the housing loading device 1400 and the turntable 1100. The gripping module 1 can adopt existing structures, such as the HSP series high-speed gripping module from FESTO; another example is Chinese utility model patent CN208249299U, entitled "An Integrated Rotary Gripping Mechanism." Of course, other forms can also be adopted, and this invention does not limit them. It is only necessary to install a structure for gripping the housing 6100 at the output end of the gripping module 1, such as a gripper cylinder.

[0063] Assembly devices 1 (1300), 2 (2300), 3 (2400), 4 (2500), 5 (3300), 6 (3400), and 7 (4300) can all employ robotic arms. Only a corresponding end-effector for picking up components such as the sealing gasket 6600 needs to be configured at the end of the robotic arm. In some embodiments, assembly device 1 (1300) may include a gripping module 2 (1310) located between the sealing ring feeding device 1500 and the turntable 1 (1100), and an end-effector for the sealing ring 6200 fixed to the gripping module 2 (1310). The end-effector for the sealing ring 6200 may adopt a structure similar to that of Chinese Utility Model Patent CN202943586U, entitled "A Clamping and Assembly Mechanism for an Elastic Sealing Ring 6200." In other embodiments, such as... Figure 13As shown, the end tool of the sealing ring 6200 includes a clamping device 1330 for clamping the sealing ring 6200 in a free state and a clamping device 2 1340 for clamping the sealed ring 6200 in an open state. An opening mechanism 1320 for opening the sealing ring 6200 is also provided between the turntable 1100 and the sealing ring feeding device 1500. The opening mechanism 1320 may include a guide rail slide parallel finger gripper 1322 and two guide rail slide parallel finger grippers 2, which are respectively installed on the two slides of the guide rail slide parallel finger gripper 1322. Opening fingers 1321 are installed on both slides of the guide rail slide parallel finger gripper 2. The opening directions of the guide rail slide parallel finger gripper 1322 and the guide rail slide parallel finger gripper 2 are perpendicular to each other. The guide rail slide parallel finger gripper 1322 and the guide rail slide parallel finger gripper 2 can both adopt existing technology, such as the MHF2 series guide rail slide parallel finger gripper from SMC. The clamping device 1330 can be a gripper cylinder. When clamping the free-state sealing ring 6200, two fingers of the clamping device 1330 are inserted into the seal, and then the two fingers are spread open to support the sealing ring 6200. Then, the grasping module 2 1310 drives the clamping device 2 1340 to remove the sealing ring 6200 from the opening mechanism 1320, and at the same time, the clamping device 1330 moves the sealing ring 6200 into the opening mechanism 1320. Then, the guide rail slide parallel finger gripper 1322 and the guide rail slide parallel finger gripper 2 move simultaneously, driving the four opening fingers 1321 to open, expanding the sealing ring 6200, making it easier for the clamping device 2 1340 to grasp it. In some embodiments, such as Figure 13 As shown, the clamping device 2 1340 includes a retractable core block 1341 and a push sleeve 1342 that fits over the core block 1341. The core block 1341 extends out of the push sleeve 1342, and the outer contour of the core block 1341 extending out of the push sleeve 1342 is adapted to the inner wall of the opened sealing ring 6200. When the sealing ring 6200 is taken out from the opening mechanism 1320, the core block 1341 is inserted into the sealing ring 6200. The guide rail slide parallel finger gripper 1 1322 and the guide rail slide parallel finger gripper 2 respectively drive the four opening fingers 1321 to close, thereby putting the sealing ring 6200 over the core block 1341. It can be understood that avoidance grooves can be machined on the core block 1341 to avoid the four opening fingers 1321, or the four opening fingers 1321 can be made retractable to avoid interference between the core block 1341 and the four opening fingers 1321. In some embodiments, such as Figure 13As shown, the opening mechanism 1320 also includes a lifting cylinder 1323. A guide rail slide parallel to the finger gripper 1322 is mounted on the output end of the lifting cylinder 1323, thus making the four opening fingers 1321 retractable. When installing the sealing ring 6200, the gripping module 1310 drives the clamping device 1340 to move to the housing 6100. After contacting the housing 6100, the core block 1341 gradually retracts, and the push sleeve 1342 continues to move, thereby pushing the sealing ring 6200 into the housing 6100. The retraction of the core block 1341 can be achieved by setting a spring between the core block 1341 and the push sleeve 1342.

[0064] It is obvious that the housing 6100 can also be transferred from the turntable to the conveying device 7000, and then from the conveying device 7000 to another turntable or discharge device, by means of the structure of the gripping module one or gripping module two 1310 described above.

[0065] Since the terminal holding auxiliary structure 6300 and the cap 6700 are made of hard material, the assembly device 2300 for inserting the terminal holding auxiliary structure 6300 into the housing 6100 and the assembly device 63400 for inserting the cap 6700 into the housing 6100 can both be made using the structure of the gripping module 1 or gripping module 2 1310 described above. Only the end tool needs to be replaced with a gripper cylinder.

[0066] Sliding plates 6400 and 6500 are also made of hard material, but they need to be inserted into the housing 6100 from a horizontal direction. Therefore, when the assembly device 3 2400 and assembly device 4 2500 adopt the structure of the gripping module 1 or gripping module 2 1310, a telescopic cylinder can be added to the end tool. Specifically, when the gripping module moves sliding plate 6400 or sliding plate 6500 to the housing carrier 2 2200, the telescopic cylinder pushes the gripper holding sliding plate 6400 or sliding plate 6500 toward the housing 6100. The device moves to insert a portion of slide plate 6400 or slide plate 6500 into housing 6100. Then, a final pressure telescopic cylinder is set on turntable 2100. When housing carrier 2200, which mounts slide plate 6400 and slide plate 6500, rotates to the final pressure telescopic cylinder, the piston rod of the final pressure telescopic cylinder extends and can completely push slide plate 6400 and slide plate 6500 into housing 6100. Assembly device 3 2400 and assembly device 4 2500 can also be implemented by multi-axis robotic arms, which will not be listed here, and the present invention does not limit them.

[0067] The sealing gasket 6600 is made of soft material, and the end tool of the assembly device 53300 can be a vacuum suction head.

[0068] This invention is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that falls within the scope of the claims of this invention shall be protected by this invention.

Claims

1. A multi-specification combined plastic parts shared assembly system, characterized in that: The system includes four devices connected sequentially via a conveying device: Device 1, Device 2, Device 3, and Device 4. Each device includes a turntable and multiple housing carriers arranged around the circumference of the turntable. The housing carriers are used to position and fix the housings to the turntable. Device 1 also includes an assembly device 1 for inserting a sealing ring into the housing. Device 2 includes an assembly device 2 for inserting a terminal holding auxiliary structure into the housing, an assembly device 3 for inserting a slider 1 into the housing, and an assembly device 4 for inserting a slider 2 into the housing. Assembly devices 2, 3, and 4 are distributed around the circumference of the turntable of Device 2. Device 3 includes an assembly device 5 for inserting a sealing gasket into the housing and an assembly device 6 for inserting a cap into the housing. Assembly devices 5 and 6 are distributed around the circumference of the turntable of Device 3. Device 4 also includes an assembly device 7 for inserting a handle into the housing. It also includes a clamping mechanism for clamping slide 1 and slide 2; the clamping mechanism includes two elastic clamping parts that respectively contact slide 1 and slide 2 and can elastically clamp, and a clamping drive unit that drives the two elastic clamping parts to move along the insertion direction of slide 1 and slide 2. The assembly device seven includes a clamping device for clamping the handle, a robotic arm two for driving the clamping device to move so as to insert the clamped handle into the housing, and a spreading structure for spreading the housing; the spreading structure includes a spreading component and a lifting drive component, the spreading component including two oppositely arranged spreading fingers and a finger drive component for driving the spreading fingers to open and close. When the assembly device seven is in assembly mode, the lifting drive component is used to drive the spreading structure to move, so that the two spreading fingers are inserted into the gap of the housing mounting handle. The finger drive component is used to drive the two spreading fingers to open, widening the gap of the housing mounting handle. The robotic arm two is used to drive the handle on the clamping device to be inserted into the housing. The assembly device seven also includes an elastic clamping structure for pressing the housing. The elastic clamping structure is fixed to the output end of the lifting drive component and moves up and down simultaneously with the spreading structure. The finger driving component includes a base, a rotating shaft rotatably supported on the base, two end face cams fixed to the rotating shaft, a motor driving the rotating shaft to rotate, a movable seat fixed to the output end of the lifting driving component, and two cam follower components respectively connected to the two end face cams; the two cam follower components are slidably connected to the base along a direction parallel to the rotating shaft, and each cam follower component has two driven rollers at one end and driven rollers at the other end; the outer circular surfaces of the two driven rollers are tangent to the two end faces of the end face cams respectively; two extended fingers are slidably connected to the movable seat along their extended direction, and the extended fingers have a sliding groove along the lifting direction of the extended structure, and the driven rollers are located in the sliding groove and are adapted to the sliding groove.

2. The multi-specification combined plastic part sharing assembly system according to claim 1, characterized in that: The devices 1, 2, 3, and 4 are arranged in a rectangular pattern; or, The third device is connected to a fifth device for punching caps; the fifth device includes a punching device and a transfer device for transferring punched caps to the third device; the punching device includes a die, a press for driving the die to punch, and a cap carrier for positioning the cap; the die includes a body, a punch, a reset device, and a limiting device; the body has a limiting structure; multiple punches and limiting devices are provided and correspond one-to-one, and the punch is configured to slide within the range defined by the limiting structure and the reset device; the reset device has a first telescopic part, which extends along the movement direction of the die and is used to reset the punch when the punch is in the initial mode; the limiting device has a second telescopic part, which extends in a direction perpendicular to the movement direction of the die when the punch corresponding to the limiting device is in the punching mode and is used to fix a part of the punch between the second telescopic part and the limiting structure.

3. The multi-specification combined plastic part sharing assembly system according to claim 2, characterized in that: The transfer device includes a cap turntable and a robotic arm that transfers the cap from the cap turntable to the device. Multiple cap carriers are arranged along the circumference of the cap turntable and fixed to it. At least two punching devices are arranged along the cap turntable. The main body has a stepped through-hole, and the punch is a stepped shaft that slides with the stepped through-hole. The stepped surface of the stepped through-hole is the limiting structure. The reset device includes multiple ejector pins corresponding to the multiple punches and a reset drive unit that drives the multiple ejector pins to extend and retract along the direction of the die's movement. The ejector pins are the first telescopic parts. A stripper plate is provided between the main body and the cap carrier. The stripper plate is connected to the main body, and a stripper spring is provided between the stripper plate and the main body. The stripper plate slides with the punch.

4. The multi-specification combined plastic part sharing assembly system according to claim 2, characterized in that: The limiting device includes a telescopic rod and a limiting drive unit that drives the telescopic rod to extend and retract in a direction perpendicular to the direction of die movement, wherein the telescopic rod is the second telescopic part.

5. The multi-specification combined plastic part sharing assembly system according to claim 1, characterized in that: The elastic pressing part includes two limiting blocks arranged at intervals along the insertion direction of slider one and slider two, and a pressing shaft slidably arranged along the insertion direction of slider one and slider two. The pressing shaft is stepped in shape with a thicker middle and thinner ends. The two ends of the pressing shaft are slidably engaged with the two limiting blocks respectively. The end of the pressing shaft near the housing extends out of the corresponding limiting block. A pressing spring one is provided between the pressing shaft and at least one of the limiting blocks. When the elastic pressing part is in the pressing state, the pressing spring one is used to provide the pressing force for pressing slider one and slider two.

6. The multi-specification combined plastic part sharing assembly system according to claim 5, characterized in that: The elastic pressing structure includes a pressing block slidably connected to the movable seat along the lifting direction of the spreading structure and a second pressing spring disposed between the pressing block and the movable seat. When the elastic pressing part is in the pressing state, the second pressing spring is used to provide the pressing force of the pressing shell.

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