Multi-station circulation clamp for earphone front and middle shells

Abstract

The invention discloses an earphone front middle shell multi-station circulation clamp which comprises a cover plate, a carrier and a base, a welding heat conduction block and a profiling positioning block of the carrier are both provided with profiling faces used for positioning an earphone front middle shell, the cover plate is detachably and magnetically attracted to a fixing piece through a first guiding positioning magnetic attraction assembly, and the cover plate is provided with a through hole aligned with a welding position on a mainboard. The carrier is connected to the base, and the base is provided with a second guiding and positioning magnetic attraction assembly to be assembled with different station devices in a positioning mode. According to the clamp, through separable arrangement of the cover plate, peripheral devices of an earphone mainboard can be protected and shell materials can be shielded during welding operation, meanwhile, guiding and magnetic attraction modes are adopted for assembly of the cover plate and the carrier, assembly of the carrier and the base and assembly of the base and equipment at different stations, the positioning accuracy and assembly convenience and stability are improved, and the production efficiency is improved. The universality of the clamp is improved, and multiple stations of charging PAD welding, BTB dispensing, BTB pressing and curing and middle shell dispensing are effectively connected in series.

Description

Technical Field

[0001] The invention relates to the technical field of earphone shell fixtures, in particular to a multi-station circulation fixture for the front middle shell of an earphone. Background Art

[0002] During the operation of the front middle shell of the rechargeable earphone, it is necessary to perform the following processes on the charging interface (hereinafter referred to as PAD) welding, the connector (hereinafter referred to as BTB) dispensing, the BTB dispensing and then pressing and curing, the middle shell dispensing and other processes on the mainboard assembled on the middle shell, and then press it with the back shell. Before each process is operated, the front middle shell needs to be placed in a fixture, that is, the existing fixture can only be fixed in a single station for use. On the one hand, after multiple pick-ups and put-aways, it is easy to cause inconsistent positioning of the product in the carrier (of each station), and multiple pick-ups and put-aways are easy to cause three damages to the appearance of the product. On the other hand, the fixture used in a single station requires the transfer and positioning of the middle shell before each process, forming a bottleneck for increasing production capacity, which cannot meet the fast-paced production mode of consumer electronics. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a headset front middle shell multi-station circulation fixture that can effectively connect charging PAD welding, BTB dispensing, BTB pressing and curing, and middle shell dispensing in series.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A multi-station circulation fixture for the front middle shell of an earphone, comprising a cover plate, a carrier and a base, wherein the cover plate is provided with a first guiding and positioning magnetic suction component, the carrier comprises a welding heat conductive block, a contoured positioning block and a fixing member connecting the welding heat conductive block and the contoured positioning block, the welding heat conductive block and the contoured positioning block are both provided with contoured surfaces, the two contoured surfaces are used to jointly position and place the front middle shell of the earphone equipped with a motherboard, the cover plate can be detachably magnetically attracted to the fixing member through the first guiding and positioning magnetic suction component, the cover plate is provided with a through hole aligned with the welding position on the motherboard, the carrier is connected to the base, and the base is provided with a second guiding and positioning magnetic suction component for positioning and assembling with different station equipment.

[0006] Furthermore, the first guide positioning magnetic attraction component includes a guide sleeve and a cover plate adsorption magnet, and the guide sleeve and cover plate adsorption magnet are used to position and install the cover plate on the fixing member.

[0007] Furthermore, the cover plate also includes a pressing head, which is used to press the mainboard in the front middle shell of the earphone.

[0008] Preferably, the through hole is an inverted tapered hole.

[0009] Furthermore, the fixing part is provided with assembly positions of the welding heat conductive block, the contour positioning block and a first positioning component, the first positioning component includes first and second guide positioning pins and a magnetic block, the welding heat conductive block is connected to the fixing part via the first guide positioning pin, the welding heat conductive block and the contour positioning block are locked with a first locking screw, the guide sleeve is connected to the fixing part via the second guide positioning pin, and the magnetic block is adsorbed to the cover plate adsorption magnet.

[0010] Furthermore, the base includes a bottom plate, on which are arranged a second positioning assembly and the second guiding positioning magnetic attraction assembly, the second positioning assembly includes third and fourth guiding positioning pins and an earphone adsorption magnet, the third guiding positioning pin is connected to a fixing member and is locked to the bottom plate with a second locking screw, the fourth guiding positioning pin is connected to the contoured positioning block, the earphone adsorption magnet is used to adsorb the front middle shell of the earphone placed on the contoured positioning block, the second guiding positioning magnetic attraction assembly includes a fixture guide sleeve and a fixture adsorption magnet, the fixture guide sleeve and the fixture adsorption magnet are used for guiding positioning and magnetic attraction assembled with different workstation equipment.

[0011] Preferably, the welded heat-conducting block is made of brass.

[0012] Preferably, there are four contoured positioning blocks, and correspondingly, there are four welded heat-conducting blocks.

[0013] Furthermore, the contoured positioning blocks and the corresponding welded heat-conducting blocks are arranged in groups and laterally spaced apart on the fixing member.

[0014] Furthermore, the welding heat-conducting block and the contoured surfaces on the contoured positioning block are both made of silicone molds.

[0015] The clamp of the present invention, through the detachable setting of the cover plate, can protect the peripheral devices of the earphone mainboard and shield the shell material at the same time as the charging PAD welding operation, to prevent the shell material from being scalded by the instantaneous high temperature of welding. At the same time, the assembly between the cover plate and the carrier, the carrier and the base, and the base and different workstation equipment all adopts the guidance and magnetic attraction method to improve the positioning accuracy and the convenience and stability of assembly, and improve the versatility of the clamp, so that the charging PAD welding, BTB dispensing, BTB pressing and curing, and middle shell dispensing multiple stations can be effectively connected in series, avoiding the need to be equipped with manpower for a single process and a single equipment, thereby achieving the purpose of reducing manpower and increasing efficiency.

[0016] The welding heat-conducting block is made of brass, and the charging PAD is in contact with brass to achieve the heat transfer effect, avoiding the material loss caused by the instantaneous high temperature of the tin-spraying welding PAD causing the shell material surface to atomize and leading to the overall scrapping of the semi-finished earphones. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A three-dimensional diagram of the clamp of the present invention;

[0019] Figure 2 It is an exploded view of the clamp of the present invention;

[0020] Figure 3 This is a schematic diagram of the back of the cover;

[0021] Figure 4 This is a schematic diagram of the back of the base. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0023] It should be noted that when an element is referred to as being "mounted on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The "front and middle shell of the earphone" described herein is a semi-finished earphone with the front shell and the middle shell of the earphone assembled. The terms "first", "second", "upper" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] See also Figures 1 to 4A multi-station circulation fixture for a front-middle shell of an earphone comprises a cover plate 1, a carrier and a base, the cover plate 1 is provided with a first guiding positioning magnetic suction component, the carrier comprises a welding heat conductive block 21, a contouring positioning block 22 and a fixing member 23 connecting the welding heat conductive block and the contouring positioning block, the welding heat conductive block 21 and the contouring positioning block 22 are provided with contouring surfaces 211 and 221, the contouring surfaces 211 and 221 are jointly positioned to place a front-middle shell of an earphone equipped with a motherboard, the cover plate 1 is detachably magnetically attracted to the fixing member 23 through the first guiding positioning magnetic suction component, the cover plate 1 is provided with a through hole 11 aligned with the welding position on the motherboard, the carrier is connected to the base, and the base is provided with a second guiding positioning magnetic suction component for positioning and assembling with different station equipment.

[0026] In this embodiment, the clamp adopts a mode in which the cover plate 1 is separated from the carrier. The carrier is provided with a welding heat conductive block 21 and a contour positioning block 22 to position and place the front middle shell of the earphone. The cover plate 1 adopts a first guide positioning magnetic suction component to accurately ensure the positioning accuracy. The base adopts a second guide positioning magnetic suction component to position and assemble with different station equipment, so that the front middle shell of the earphone with the assembled motherboard is placed on the contour surfaces 211 and 221 before the welding station. The cover plate 1 is covered during the welding process, and the peripheral components of the motherboard can be protected and shielded at the same time while the charging PAD welding operation is being performed. The shell material is blocked to prevent the shell material from being scalded by the instantaneous high temperature of welding. After the welding is completed, the cover plate 1 is removed, and the fixture with the front and middle shell of the earphone can continue to flow into the next station for processing, so as to realize the effective series connection of the charging PAD welding, BTB dispensing, BTB pressing and curing, and middle shell dispensing stations. From the input station to the product shell assembly, the whole process is executed in the equipment without multiple pick-up and placement, which can reduce the problem of black clamping after shell assembly and the three damages to the product appearance, reduce the outflow of defective products, and avoid the manpower requirements of single process and single equipment, so as to achieve the purpose of reducing manpower and increasing efficiency.

[0027] In a specific implementation of this embodiment, the first guide positioning magnetic attraction component includes a guide sleeve 12 and a cover plate adsorption magnet 13 , and the guide sleeve 12 and the cover plate adsorption magnet 13 are used to position and install the cover plate on the fixing member 23 .

[0028] The fixing part 23 is provided with assembly positions for the welding heat conductive block 21, the contour positioning block 22 and the first positioning component. The first positioning component includes first and second guide positioning pins 231, 232 and a magnetic block 233. The welding heat conductive block 21 is connected to the fixing part through the first guide positioning pin 231. The welding heat conductive block 21 and the contour positioning block 22 are locked with a first locking screw 234. The guide sleeve 12 is connected to the fixing part 23 through the second guide positioning pin 232. The magnetic block 233 is adsorbed to the cover plate adsorption magnet 13.

[0029] The base includes a bottom plate 3, on which a second positioning assembly and a second guiding positioning magnetic attraction assembly are arranged, the second positioning assembly includes third and fourth guiding positioning pins 31, 32 and an earphone adsorption magnet 33, the third guiding positioning pin 31 is connected to the fixing part 23 and is locked to the bottom plate 3 by a second locking screw 36, the fourth guiding positioning pin 32 is connected to the contoured positioning block 22, the earphone adsorption magnet 33 is used to adsorb the front middle shell of the earphone placed on the contoured positioning block 33, the second guiding positioning magnetic attraction assembly includes a clamp guide sleeve 34 and a clamp adsorption magnet 35, the clamp guide sleeve 34 and the clamp adsorption magnet 35 are used for guiding positioning and magnetic attraction assembled with different workstation equipment.

[0030] In the above specific implementation scheme, the guide sleeve 12, the second guide positioning pin 232 and the magnet are adsorbed between the cover plate 1 and the fixing member 23 to ensure the positioning accuracy requirements during installation; the welding heat conductive block 21 is connected to the fixing member 23 through the first guide positioning pin 231, and the welding heat conductive block 21 is connected to the contour positioning block 22 through the first locking screw 234, that is, the welding heat conductive block 21, the contour positioning block 22 and the fixing member 23 are assembled to form a carrier for taking and placing the front middle shell of the earphone, the fixing member 23 is connected to the contour positioning block 22 and the base through the third and fourth guide positioning pins 31, 32 respectively, and the bottom plate 3 is provided with an earphone adsorption magnet 33 for adsorbing the front middle shell of the earphone placed on the contour positioning block 22, so that the front middle shell of the earphone is placed on the contouring surfaces 211, 221 of the carrier and is adsorbed by the earphone adsorption magnet 33 to avoid shaking or falling out of the carrier during operation; the base and different workstation equipment are assembled through the fixture guide sleeve 34 and the fixture adsorption magnet 35. It can be seen that in this solution, the assembly between the cover plate 1 and the carrier, the carrier and the base, and the base and different workstation equipment all adopt the guidance and magnetic attraction method to improve the positioning accuracy and assembly convenience and stability, and improve the versatility of the fixture.

[0031] The cover plate 1 also includes a pressing head 14. The through hole 11 on the cover plate 1 is an inverted tapered hole. The pressing head 14 is used to press the mainboard in the front middle shell of the earphone to prevent poor welding caused by the warping of the mainboard. The inverted tapered hole 11 is aligned with the welding position on the mainboard to avoid the charging PAD welding position. Because the charging PAD welding is tin-spraying welding, high temperature will be generated at the moment of welding, which can easily burn the shell material. After the cover plate 1 is pressed, the inverted tapered hole 11 blocks the shell around the charging PAD welding to prevent the shell from being burned.

[0032] When the fixture is used, the front middle shell of the earphone with the motherboard assembled is placed in the fixture profiling surfaces 211 and 221 in turn, and then the fixture is placed in the welding equipment track. The fixture automatically moves to the welding position, and the cover plate 1 is pressed down by the equipment induction. The cover plate adsorption magnet 13 is guided by the guide sleeve 12 and the first guide positioning pin 231 to be adsorbed by the magnetic block 233 on the fixing part. After the cover plate 1 is pressed by the pressure head 14 to press the earphone motherboard, the equipment executes the Mark grabbing and then performs the welding action; after the charging PAD is welded, the welding is completed, the welding equipment removes the cover plate 1, and the fixture moves to the BTB The glue dispensing operation is performed in the UV device. After the glue dispensing is completed, it flows into the UV curing device. The cylinder is pressed down to perform BTB pressing. After the pressing is completed, the UV lamp synchronously performs the irradiation action to perform UV curing. After UV curing is completed, the UV glue dispensing equipment runs the fixture to the middle shell for hot melt glue operation. After the middle shell is glued, it flows into the next station for the rear shell closing operation. The rear shell closing is carried out synchronously in the fixture to reduce the picking and placing actions. After the shell closing is completed, it enters the next process for the middle and rear shells to maintain pressure. This fixture only needs to be picked up and placed once, which can effectively solve the three damages to the product appearance caused by multiple picking and placing.

[0033] Preferably, the welding heat-conducting block 21 is made of brass, the contoured positioning block 22 is made of urethane foam, the fixing piece 23 is made of sintered steel, and the bottom plate 3 is made of aluminum alloy.

[0034] In a specific implementation of this embodiment, in order to improve efficiency and production capacity, the fixture can make multiple welding heat conductive blocks and multiple profiling positioning blocks according to actual needs, that is, the fixing part is equipped with multiple groups of corresponding welding heat conductive blocks 21 and profiling positioning blocks 22 to form multiple processing points. In this implementation, there are 4 profiling positioning blocks 22, and correspondingly, there are 4 welding heat conductive blocks 21. The profiling positioning blocks 22 and the corresponding welding heat conductive blocks 21 are arranged in groups and laterally spaced on the fixing part 23. In this way, multiple earphone front middle shells are arranged laterally on the fixture, which is convenient for observation and operation.

[0035] The contoured surfaces on the welding heat conductive block 21 and the contoured positioning block 22 are both made of silicone molds. The silicone molds can accurately replicate the shape and details of the original model, effectively solving the problem of three appearance injuries (scratches, crushing, and squeezing) caused by contact between the product and the carrier when it is placed. In addition, silicone molds are used instead of machining to save machining time.

[0036] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A multi-station flow fixture for the front and middle shell of an earphone, characterized in that: It includes a cover plate, a carrier and a base, the cover plate is provided with a first guiding and positioning magnetic suction component, the carrier includes a welding heat conductive block, a contour positioning block and a fixing piece connecting the welding heat conductive block and the contour positioning block, the welding heat conductive block and the contour positioning block are both provided with contour surfaces, the two contour surfaces are used to jointly position and place the front middle shell of the earphone equipped with a motherboard, the cover plate can be detachably magnetically attracted to the fixing piece through the first guiding and positioning magnetic suction component, the cover plate is provided with a through hole aligned with the welding position on the motherboard, the carrier is connected to the base, and the base is provided with a second guiding and positioning magnetic suction component for positioning and assembling with different workstation equipment.

2. The multi-station flow fixture for the front and middle shell of the earphone according to claim 1, characterized in that: The first guide positioning magnetic attraction component includes a guide sleeve and a cover plate adsorption magnet, and the guide sleeve and cover plate adsorption magnet are used to position and install the cover plate on the fixing member.

3. The multi-station flow fixture for the front and middle shell of the earphone according to claim 1, characterized in that: The cover plate also includes a pressing head, which is used to press the mainboard in the front middle shell of the earphone.

4. The multi-station flow fixture for the front and middle shell of the earphone according to claim 1, characterized in that: The through hole is an inverted tapered hole.

5. The multi-station flow fixture for the front and middle shell of an earphone according to claim 2, characterized in that: The fixing part is provided with assembly positions of the welding heat conductive block, the contour positioning block and the first positioning component, the first positioning component includes first and second guide positioning pins and a magnetic block, the welding heat conductive block is connected to the fixing part through the first guide positioning pin, the welding heat conductive block and the contour positioning block are locked with a first locking screw, the guide sleeve is connected to the fixing part through the second guide positioning pin, and the magnetic block is adsorbed to the cover plate adsorption magnet.

6. The multi-station flow fixture for the front and middle shell of an earphone according to claim 5, characterized in that: The base includes a bottom plate, on which are arranged a second positioning assembly and the second guiding positioning magnetic attraction assembly, the second positioning assembly includes third and fourth guiding positioning pins and an earphone adsorption magnet, the third guiding positioning pin is connected to a fixing member and is locked to the bottom plate with a second locking screw, the fourth guiding positioning pin is connected to the contoured positioning block, the earphone adsorption magnet is used to adsorb the front middle shell of the earphone placed on the contoured positioning block, the second guiding positioning magnetic attraction assembly includes a fixture guide sleeve and a fixture adsorption magnet, the fixture guide sleeve and the fixture adsorption magnet are used for guiding positioning and magnetic attraction assembled with different workstation equipment.

7. The multi-station flow fixture for the front and middle shell of an earphone according to claim 1, characterized in that: The welded heat-conducting block is made of brass.

8. The multi-station flow fixture for the front and middle shell of an earphone according to claim 1, characterized in that: There are four contoured positioning blocks, and correspondingly, there are four welded heat-conducting blocks.

9. The multi-station flow fixture for the front and middle shell of an earphone according to claim 8, characterized in that: The contoured positioning blocks and the corresponding welded heat-conducting blocks are arranged in groups in a transversely spaced manner on the fixing member.

10. The multi-station flow fixture for the front and middle shell of an earphone according to claim 1, characterized in that: The welding heat-conducting block and the contoured surfaces on the contoured positioning block are both made by using silicone molds.

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