An assembly device

Abstract

The present invention discloses an assembly device, including a conveying device for conveying an annular sponge, a flaring device installed on one side of the conveying device, and a plugging manipulator for plugging a workpiece into a hollow area of ​​the annular sponge; the flaring device includes two sets of expansion manipulators arranged opposite to each other, the expansion manipulator includes an expansion claw and a lateral drive device for driving the expansion claw to move away from the annular sponge and a vertical drive device for driving the expansion claw to insert into the hollow area, the lateral drive device is fixedly connected to the drive shaft of the vertical drive device. The assembly device of this embodiment can effectively prevent the annular sponge from sticking to the shell when it is not placed in the correct position, greatly improving the assembly efficiency.

Description

Technical Field

[0001] The invention relates to the field of earphone assembly, and in particular to an assembly device. Background Art

[0002] Nowadays, earphones include earmuffs, which include a shell and an annular sponge sleeved around the shell. Generally, the shell is round or oval, and the shape of the annular sponge is similar to that of the earmuffs.

[0003] In the prior art, a double-sided adhesive layer is attached to the 360° circumference of the shell, and the annular sponge needs to be manually placed around the shell. During the manual assembly process, the operator is prone to adhesion between the double-sided adhesive layer and the annular sponge, resulting in the need for rework, which greatly reduces the efficiency of production and assembly.

[0004] In view of this, it is necessary to design an assembly device to improve the efficiency of arranging the annular sponge on the outer peripheral side of the shell. Summary of the invention

[0005] The object of the present invention is to provide an assembly device to improve the efficiency of arranging an annular sponge on the outer peripheral side of a housing.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] An assembly device comprises a conveying device for conveying an annular sponge, an expanding device installed on one side of the conveying device, and a plugging manipulator for plugging a workpiece into a hollow area of ​​the annular sponge;

[0008] The expansion device includes two sets of expansion manipulators arranged opposite to each other, and the expansion manipulators include expansion claws and a horizontal drive device for driving the expansion claws to move away from the annular sponge and a vertical drive device for driving the expansion claws to insert into the hollow area. The horizontal drive device is fixedly connected to the drive shaft of the vertical drive device.

[0009] Optionally, the conveying device is a rotating disc, and a plurality of supporting jigs for supporting the annular sponge are arranged in a circular array on the rotating disc.

[0010] Optionally, a side pressure maintaining device is further provided on one side of the rotating disc, and the side pressure maintaining device includes a bracket, on which a side pressure maintaining cylinder is mounted, and the telescopic shaft of the side pressure maintaining cylinder is provided with a side extrusion block for extruding the outer side of the workpiece.

[0011] Optionally, it further includes a sticker module for sticking double-sided adhesive tape on the top side of the workpiece, and the sticker module includes:

[0012] A fixed frame, on which a material discharge device for outputting the material belt is installed;

[0013] A telescopic device, wherein the body of the telescopic device is fixedly connected to the fixed frame, and a material-retrieving platform is fixedly connected to the telescopic shaft of the telescopic device, and the material belt passes through the top side of the material-retrieving platform;

[0014] The gluing device comprises a gluing paper cylinder, the body of which is fixedly connected to the fixing frame, and a suction component for sucking the double-sided adhesive paper on the material belt is arranged on the telescopic shaft of the gluing device;

[0015] A material belt collection device, installed on the fixing frame to recycle the material belt;

[0016] When the gluing device absorbs the double-sided adhesive tape on the material belt, the adsorption component adsorbs the double-sided adhesive tape on the material belt, the telescopic device drives the material picking platform to translate so that the material picking platform is separated from the adsorption component, and the material collecting belt device collects the material so that the material belt is separated from the material belt. At this time, the adsorption component only adsorbs the double-sided adhesive tape.

[0017] Optionally, the sticker module further includes a transfer tray, on which a positioning fixture for carrying a workpiece is provided;

[0018] The material transfer tray is located at one side of the bottom of the adhesive tape cylinder, so that the adsorption component can stick the adsorbed double-sided adhesive tape on the workpiece.

[0019] Optionally, a glue paper tearing module is further provided on one side of the material transfer tray, and the glue paper tearing module includes a glue paper top device and a glue paper sandwich device;

[0020] The adhesive paper ejecting device comprises an adhesive paper ejecting cylinder, an ejector pin is installed on the telescopic shaft of the adhesive paper ejecting cylinder, the material transfer tray is provided with a first through hole, the positioning fixture is provided with a second through hole coaxial with the first through hole, and the ejector pin can be driven to pass through the first through hole and the second through hole in sequence to eject the waste part of the double-sided adhesive paper on the workpiece;

[0021] The laminated paper device comprises a paper clamping manipulator arranged on one side of the top of the material transfer tray, the paper clamping manipulator is provided with a clamping claw for clamping the waste part, and the clamping claw has a serrated clamping part.

[0022] Optionally, a roller pressing device is further provided on one side of the transfer material tray, the roller pressing device comprises a roller pressing bracket and a rotating pressing roller mounted on the roller pressing bracket, and an elastic member for pushing the rotating pressing roller toward the transfer material tray is provided between the roller pressing bracket and the rotating pressing roller, and the axis of the rotating pressing roller is parallel to the top side surface of the transfer material tray;

[0023] The sticker module, the rolling device and the adhesive tape tearing module are arranged in sequence. When the workpiece of the transfer material tray passes through the rolling device, the rotating pressing roller presses on the top side of the workpiece with the double-sided adhesive tape.

[0024] Optionally, a top pressure-maintaining device is further provided on one side of the top of the rotating disc, and the top pressure-maintaining device comprises a top pressure-maintaining cylinder and a pressure-maintaining plate for pressing on the top side surface of the workpiece.

[0025] Optionally, a material transfer robot is further provided between the rotating disc and the material transfer disc, and the material transfer robot is used to transfer the workpiece on the carrying fixture to the positioning fixture.

[0026] Optionally, the expansion claw comprises two expansion columns which are spaced apart from each other, and one end of the expansion column which is used to extend into the hollow area of ​​the annular sponge is inclined.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] In this embodiment, two groups of expansion manipulators are inserted into the hollow area of ​​the annular sponge at the same time, and then the two groups of expansion manipulators move away from each other to expand the hollow area of ​​the annular sponge. At this time, the plugging manipulator plugs the shell of the earphone into the hollow area of ​​the annular sponge. At this time, the double-sided adhesive layer on the side of the shell will not adhere to the annular sponge, avoiding the problem of incorrect installation position caused by the adhesion of the double-sided adhesive layer, so that the shell can be installed in the correct position; after the shell is inserted into the set position, the two groups of expansion manipulators release the annular sponge, and the annular sponge rebounds to the side of the shell and adheres to the double-sided adhesive layer of the shell. The assembly equipment, the expansion device and the plugging manipulator of this embodiment can effectively avoid the situation where the annular sponge sticks to the shell when it is not placed in the correct position, greatly improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0031] Figure 1 A schematic diagram of the structure of an assembly device provided in an embodiment of the present invention;

[0032] Figure 2 for Figure 1 A magnified schematic diagram of position A in the middle;

[0033] Figure 3 A schematic top view of an assembly device provided in an embodiment of the present invention;

[0034] Figure 4 A three-dimensional schematic diagram of a sticker module provided by an embodiment of the present invention on one side of a transfer tray;

[0035] Figure 5 for Figure 4 A magnified schematic diagram of position B in the middle;

[0036] Figure 6 A schematic diagram of the structure of a material transfer tray sticker module and a glue paper peeling module provided in an embodiment of the present invention;

[0037] Figure 7 for Figure 6 A magnified schematic diagram of the middle C position;

[0038] Figure 8 A schematic diagram of the three-dimensional structure of a sticker module provided in an embodiment of the present invention.

[0039] Illustrations: 1. Conveying device; 21. Expanding device; 211. Expansion claw; 213. Horizontal driving device; 212. Vertical driving device; 22. Material plugging manipulator; 3. Side pressure-maintaining device; 31. Side pressure-maintaining cylinder; 32. Side extrusion block; 4. Sticker module; 401. Pressing cylinder; 402. First clamping plate 402; 41. Fixed frame; 42. Discharging device; 43. Telescopic device; 44. Material taking platform; 45. Adhesive paper cylinder; 46. Adsorption component; 47. Material receiving belt device; 48. Material transfer tray; 5. Adhesive paper tearing module; 51. Top adhesive paper cylinder; 52. Paper clamping manipulator; 53. Clamping claw 6; Rolling device; 61. Rotating pressure roller; 62. Elastic member; 7. Top pressure-maintaining device; 71. Top pressure-maintaining cylinder; 72. Pressure-maintaining plate. DETAILED DESCRIPTION

[0040] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0042] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0043] An embodiment of the present invention provides an assembly device for improving the efficiency of installing an annular sponge on a shell.

[0044] See also Figures 1 to 8 , the assembly equipment includes a conveying device 1 for conveying annular sponge, an expanding device 21 installed on one side of the conveying device 1, and a plugging manipulator 22 for plugging the workpiece into the hollow area of ​​the annular sponge;

[0045] The expansion device 21 includes two sets of expansion manipulators arranged opposite to each other, the expansion manipulators include expansion claws 211 and a horizontal driving device 213 for driving the expansion claws 211 to move away from the annular sponge and a vertical driving device 212 for driving the expansion claws 211 to insert into the hollow area. The horizontal driving device 213 is fixedly connected to the driving shaft of the vertical driving device 212.

[0046] It is worth noting that the expansion device 21 is installed on one side of the top of the conveying device 1, and a carrying jig for carrying the annular sponge is provided on the conveyor belt. When the carrying jig is at the assembly station, two groups of expansion manipulators are arranged on both sides of the carrying jig. The expansion claws 211 of the two groups of expansion manipulators are both extended into the hollow area of ​​the annular sponge, and the expansion claws 211 of the two groups of expansion manipulators are symmetrically arranged about the shell on the carrying jig, and then one group of expansion claws 211 moves in a set direction (for example, parallel to the horizontal plane and moves to the left) under the drive of the lateral drive device 213, and the other group of expansion claws 211 moves in the opposite direction of the set direction, so that the hollow area of ​​the annular sponge is expanded, and at this time, the plugging manipulator 22 inserts the shell into the expanded hollow area, and then releases the annular sponge, and the annular sponge rebounds and adheres to the peripheral side of the shell. It should also be noted that after the assembly of one shell is completed, the vertical drive device 212 drives the expansion claw 211 to move upward, the assembled shell flows out of the assembly station, and another shell flows into the assembly station, and the assembly is cyclically performed.

[0047] The assembly equipment in this embodiment can effectively avoid the situation where the annular sponge sticks to the shell when it is not placed in the correct position through mechanized assembly, thereby greatly improving the assembly efficiency.

[0048] Optionally, the conveying device 1 is a rotating disc, and a plurality of supporting jigs for supporting the annular sponge are arranged in a circumferential array on the rotating disc. Specifically, the loading robot puts the shell into the supporting jig, and after the shell is assembled, the unloading robot unloads the shell.

[0049] Optionally, a side pressure-maintaining device 3 is further provided on one side of the rotating disc, and the side pressure-maintaining device 3 includes a bracket, on which a side pressure-maintaining cylinder 31 is mounted, and a telescopic shaft of the side pressure-maintaining cylinder 31 is provided with a side extrusion block 32 for extruding the outer side of the workpiece. Specifically, the side pressure-maintaining cylinder 31 drives the side extrusion block 32 to press on the annular sponge on the outer periphery of the shell, so that the annular sponge can adhere to the shell more stably, thereby improving the adhesion stability of the annular sponge on the shell.

[0050] Optionally, the assembly device further comprises a sticker module 4 for sticking double-sided adhesive tape on the top side of the workpiece, and the sticker module 4 comprises:

[0051] A fixed frame 41, on which a material discharge device 42 for outputting the material belt is installed;

[0052] A telescopic device 43, the body of which is fixedly connected to the fixed frame 41, and a material taking platform 44 is fixedly connected to the telescopic shaft of the telescopic device 43, and the material belt passes through the top side of the material taking platform 44;

[0053] The gluing device comprises a gluing paper cylinder 45, the body of which is fixedly connected to the fixing frame 41, and a suction component 46 for sucking the double-sided adhesive paper on the material belt is arranged on the telescopic shaft of the gluing device;

[0054] A material belt collecting device 47, mounted on the fixing frame 41 to collect the material belt;

[0055] When the gluing device absorbs the double-sided adhesive tape on the material belt, the adsorption component 46 adsorbs the double-sided adhesive tape on the material belt, the telescopic device 43 drives the material picking platform 44 to translate so that the material picking platform 44 is separated from the adsorption component 46, and the material collection device 47 collects the material so that the material belt is separated from the material belt. At this time, the adsorption component 46 only adsorbs the double-sided adhesive tape.

[0056] It is worth noting that the sticker module is used to attach double-sided adhesive tape to the top side of the shell, complete the 360° attachment of the double-sided adhesive layer to the shell circumference, and then transfer it to the carrying fixture, and then attach the annular sponge to the shell circumference. The sticker module can attach double-sided adhesive tape to the top side of the shell without manual attachment of double-sided adhesive tape, which not only improves the efficiency of double-sided adhesive tape, but also reduces the production intensity of workers. The method of adsorbing double-sided adhesive tape in this embodiment can effectively avoid the deformation of the adsorbed double-sided adhesive tape when it is separated from the material belt.

[0057] It should also be noted that the fixing frame is also fixedly connected to the first clamping plate 402, and a clamping cylinder 401 is arranged above the first clamping plate 402. A clamping block for clamping the material strip on the first clamping plate 402 is installed on the telescopic shaft of the clamping cylinder; when the adsorption component 46 adsorbs the double-sided adhesive tape on the material strip, the clamping device presses the material strip on the first clamping plate. It should be particularly noted that the material strip released by the material discharge device 42 passes through the gap between the clamping block and the first clamping plate 402, passes through the top side of the material taking platform 44, and is then recovered by the material receiving device 47.

[0058] Optionally, the sticker module 4 further includes a transfer tray 48, on which a positioning fixture for carrying a workpiece is provided;

[0059] The material transfer tray 48 is located at one side of the bottom of the adhesive tape cylinder 45 so that the adsorption component 46 can stick the adsorbed double-sided adhesive tape onto the workpiece.

[0060] Specifically, the adhesive paper cylinder 45 is actuated to enable the adsorption assembly 46 to adsorb the double-sided adhesive paper on the material belt, and then the material taking platform 44 is moved away, and the adhesive paper cylinder 45 moves toward the material transfer tray 48 to stick the double-sided adhesive paper on the shell of the positioning fixture.

[0061] Optionally, a glue paper tearing module 5 is further provided on one side of the material transfer tray 48, and the glue paper tearing module 5 includes a glue paper top device and a glue paper sandwich device;

[0062] The adhesive paper ejecting device comprises an adhesive paper ejecting cylinder 51, an ejector pin is installed on the telescopic shaft of the adhesive paper ejecting cylinder 51, the material transfer tray 48 is provided with a first through hole, the positioning fixture is provided with a second through hole coaxial with the first through hole, and the ejector pin can be driven to pass through the first through hole and the second through hole in sequence to eject the waste part of the double-sided adhesive paper on the workpiece;

[0063] The laminated paper device comprises a paper clamping robot 52 arranged on one side of the top of the material transfer tray 48, and the paper clamping robot 52 is provided with a clamping claw 53 for clamping the waste part, and the clamping claw has a serrated clamping part.

[0064] Specifically, the shell has a through hole, and the ejector pin can move from the first through hole and the second through hole toward the through hole. The ejector pin ejects the waste portion of the double-sided adhesive tape, and then the serrated clamping portion clamps the raised waste portion of the adhesive tape, and clamps the waste portion of the adhesive tape out and throws it into the waste bin. It should be noted that the shape of the adhesive tape attached to the shell at this time is annular. It is worth noting that a pre-cut double-sided adhesive tape is pasted on the material strip, and the double-sided adhesive tape includes an annular portion and a waste portion arranged in the middle of the annular portion. A serrated line is pre-cut between the waste portion and the annular portion to facilitate the clamping jaw 53 to clamp out the entire waste portion of the adhesive.

[0065] Optionally, a roller pressing device 6 is further provided on one side of the transfer material tray 48, the roller pressing device 6 comprises a roller pressing bracket and a rotating pressing roller 61 mounted on the roller pressing bracket, and an elastic member 62 for pushing the rotating pressing roller 61 toward the transfer material tray 48 is provided between the roller pressing bracket and the rotating pressing roller 61, and the axis of the rotating pressing roller 61 is parallel to the top side of the transfer material tray 48;

[0066] The sticker module 4, the roller pressing device 6 and the adhesive tape tearing module 5 are arranged in sequence. When the workpiece of the transfer material tray 48 passes through the roller pressing device 6, the rotating pressure roller 61 presses on the top side of the workpiece with the double-sided adhesive tape.

[0067] Specifically, the rolling device 6 can make the double-sided adhesive tape stick more closely to the top side of the workpiece.

[0068] Optionally, a top pressure-maintaining device 7 is further provided on one side of the top of the rotating disc, and the top pressure-maintaining device 7 includes a top pressure-maintaining cylinder 71 and a pressure-maintaining plate 72 for pressing on the top side of the workpiece. The pressure-maintaining plate 72 is used to press the double-sided adhesive tape so that the double-sided adhesive tape is more closely attached to the top side of the workpiece. Generally, the pressure-maintaining plate 72 is driven to press on the top side of the workpiece for a set time.

[0069] Optionally, a material transfer robot is further provided between the rotating disc and the material transfer disc 48, and the material transfer robot is used to transfer the workpiece on the carrying fixture to the positioning fixture.

[0070] Optionally, the expansion claw 211 includes two expansion columns that are spaced apart, and one end of the expansion column that is used to extend into the hollow area of ​​the annular sponge is inclined.

[0071] The assembly equipment also includes a double-sided tape sticking device arranged on one side of the rotating disk, and the double-sided tape sticking device is used to stick a double-sided tape layer on the peripheral side of the shell. The double-sided tape sticking device includes a support plate, and the support plate is provided with a double-sided tape placing device, a cutting device for cutting the adhesive layer of the double-sided tape, a glue pressing device for pressing the adhesive layer to the periphery of the workpiece, and a material collecting device for recycling the adhesive paper of the double-sided tape in sequence according to the flow direction of the double-sided tape.

[0072] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An assembly device, characterized in that: It comprises a conveying device (1) for conveying an annular sponge, an expanding device (21) installed on one side of the conveying device (1), and a plugging manipulator (22) for plugging a workpiece into a hollow area of ​​the annular sponge; The expanding device (21) comprises two sets of expansion manipulators arranged opposite to each other, the expansion manipulators comprising expansion claws (211) and a transverse driving device (213) for driving the expansion claws (211) to move in a direction away from the annular sponge, and a vertical driving device (212) for driving the expansion claws (211) to insert into the hollow area, the transverse driving device (213) being fixedly connected to a driving shaft of the vertical driving device (212); The conveying device (1) is a rotating disc, and a plurality of supporting jigs for supporting the annular sponge are arranged in a circular array on the rotating disc; A side pressure-maintaining device (3) is also provided on one side of the rotating disc, the side pressure-maintaining device (3) comprising a bracket, a side pressure-maintaining cylinder (31) is mounted on the bracket, and a telescopic shaft of the side pressure-maintaining cylinder (31) is provided with a side extrusion block (32) for extruding the outer side of the workpiece; It also includes a sticker module (4) for sticking double-sided adhesive tape on the top side of the workpiece, and the sticker module (4) includes: A fixed frame (41), wherein a material discharge device (42) for discharging a material strip is mounted on the fixed frame (41); A telescopic device (43), wherein the body of the telescopic device (43) is fixedly connected to the fixed frame (41), and a material taking platform (44) is fixedly connected to the telescopic shaft of the telescopic device (43), and the material belt passes through the top side of the material taking platform (44); The gluing device comprises a gluing paper cylinder (45), the body of the gluing paper cylinder (45) being fixedly connected to the fixing frame (41), and an adsorption component (46) for adsorbing the double-sided adhesive paper on the material strip being arranged on the telescopic shaft of the gluing device; A material belt collection device (47) mounted on the fixing frame (41) to collect the material belt; When the gluing device absorbs the double-sided adhesive tape on the material belt, the adsorption component (46) adsorbs the double-sided adhesive tape on the material belt, the telescopic device (43) drives the material picking platform (44) to translate so that the material picking platform (44) is separated from the adsorption component (46), and the material collection device (47) collects the material so that the material belt is separated from the material belt. At this time, the adsorption component (46) only adsorbs the double-sided adhesive tape.

2. The assembly device according to claim 1, characterized in that: The sticker module (4) further comprises a material transfer tray (48), on which a positioning fixture for carrying a workpiece is arranged; The material transfer tray (48) is located at one side of the bottom of the adhesive paper sticking cylinder (45), so that the adsorption component (46) can stick the adsorbed double-sided adhesive paper onto the workpiece.

3. The assembly device according to claim 2, characterized in that: A glue paper tearing module (5) is also provided on one side of the material transfer tray (48), and the glue paper tearing module (5) comprises a glue paper top device and a glue paper sandwich device; The adhesive paper ejecting device comprises an adhesive paper ejecting cylinder (51), a push pin is mounted on the telescopic shaft of the adhesive paper ejecting cylinder (51), the material transfer plate (48) is provided with a first through hole, the positioning fixture is provided with a second through hole coaxial with the first through hole, and the push pin can be driven to pass through the first through hole and the second through hole in sequence to eject the waste portion of the double-sided adhesive paper on the workpiece; The laminated paper device comprises a paper clamping robot (52) arranged on one side of the top of the material transfer tray (48), and the paper clamping robot (52) is provided with a clamping claw (53) for clamping the waste part, and the clamping claw has a serrated clamping part.

4. The assembly device according to claim 3, characterized in that: A roller pressing device (6) is also provided on one side of the transfer material tray (48), the roller pressing device (6) comprising a roller pressing bracket and a rotating pressing roller (61) mounted on the roller pressing bracket, and an elastic member (62) for pushing the rotating pressing roller (61) toward the transfer material tray (48) is provided between the roller pressing bracket and the rotating pressing roller (61), and the axis of the rotating pressing roller (61) is parallel to the top side surface of the transfer material tray (48); The sticker module (4), the roller pressing device (6) and the adhesive tape tearing module (5) are arranged in sequence, and when the workpiece of the transfer material tray (48) passes through the roller pressing device (6), the rotating pressure roller (61) presses on the top side of the workpiece on which the double-sided adhesive tape is affixed.

5. The assembly device according to claim 2, characterized in that: A top pressure-maintaining device (7) is also provided on one side of the top of the rotating disc. The top pressure-maintaining device (7) comprises a top pressure-maintaining cylinder (71) and a pressure-maintaining plate (72) for pressing on the top side surface of the workpiece.

6. The assembly device according to claim 2, characterized in that: A material transfer robot is also provided between the rotating disc and the material transfer disc (48), and the material transfer robot is used to transfer the workpiece on the supporting fixture to the positioning fixture.

7. The assembly device according to claim 1, characterized in that: The expansion claw (211) comprises two expansion columns which are spaced apart from each other, and one end of the expansion column which is used to extend into the hollow area of ​​the annular sponge is inclined.

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