A uniform dispensing device for earphone production

Abstract

The present invention discloses a uniform glue dispensing device for earphone production, comprising a base plate, a support rod, an electric control box and a first cylinder, wherein one end of the support rod is fixed to the base plate, the other end of the support rod is fixed to the electric control box, the first cylinder is fixed to the lower end surface of the electric control box, a support plate is arranged above the base plate, and the support plate is connected to a positioning plate. The uniform glue dispensing device for earphone production adopts a linear moving mechanism in conjunction with a linked eccentric rotating mechanism, which can achieve a comprehensive and uniform glue dispensing effect on the workpiece. The entire structure is realized by a mechanical structure, and no special programming operation is required, which improves the convenience of using the device. In conjunction with the linked glue suction mechanism, the glue remaining in the glue dispensing head can be collected after the glue dispensing is completed, which can avoid the residual glue clogging the glue dispensing head, and can also avoid the glue inside the glue dispensing head and the glue on the surface of the workpiece from drawing due to viscosity, resulting in glue splashing, thereby better meeting the glue dispensing needs.

Description

Technical Field

[0001] The invention relates to the technical field of glue dispensing devices, in particular to a uniform glue dispensing device for earphone production. Background Art

[0002] Bluetooth headsets apply Bluetooth technology to hands-free headsets, allowing users to get rid of the entanglement of annoying wires and easily talk, listen to music or other audio in various ways. They are widely used in real life. In the production process of Bluetooth headsets, in order to ensure the dust and water resistance of the internal circuit board of the Bluetooth headset, it is necessary to perform glue dispensing on the circuit board. However, in actual use, the existing glue dispensing device needs to be programmed according to the circuit board structure, so as to design the action path of the glue dispensing mechanism to achieve uniform glue dispensing. The operation is more cumbersome and has high technical requirements. It is difficult for novices to operate, and only the glue dispensing effect of a single Bluetooth headset circuit board can be achieved each time, resulting in low production efficiency. Therefore, in view of the above problems, a uniform glue dispensing device for headset production is designed to better meet actual use needs. Summary of the invention

[0003] The purpose of the present invention is to provide a uniform glue dispensing device for earphone production to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a uniform dispensing device for earphone production, comprising a base plate, a support rod, an electric control box and a first cylinder, wherein one end of the support rod is fixed to the base plate, the other end of the support rod is fixed to the electric control box, the first cylinder is fixed to the lower end surface of the electric control box, a support plate is arranged above the base plate, the support plate is connected to a positioning plate, a workpiece is placed on the positioning plate, a movable plate is fixed to the output end of the first cylinder, a convex rack is evenly fixed to the lower end surface of the movable plate, a connecting rod is fixed to the right side of the movable plate, a second cylinder is fixed to the connecting rod, a mounting plate is arranged below the movable plate, a connecting frame is fixed to the right side of the mounting plate, the connecting frame is connected to the output end of the second cylinder, sliding rods are symmetrically fixed to the connecting frame, and the The sliding rod and the connecting rod are connected in a sliding manner, and a rotating shaft is connected to the bearing on the mounting plate. A gear is fixed to the upper end of the rotating shaft, and the gear corresponds to the convex rack one by one, and the gear and the convex rack are meshingly connected. A disc is fixed to the lower end of the rotating shaft, and an eccentric shaft is fixed to the lower end of the disc, and the diameter of the rotating path of the eccentric shaft is smaller than the diameter of the circular structure on the workpiece. A gluing mechanism is fixed directly below the eccentric shaft, and a glue suction mechanism is installed on the side of the gluing mechanism. During the gluing process, the mounting plate is driven to move horizontally by the second cylinder, thereby driving the gluing mechanism to move horizontally, so as to realize gluing of the long strip part of the workpiece, and then cooperating with the meshing transmission action between the gear and the convex rack, the eccentric shaft can be rotated, thereby driving the gluing mechanism to rotate, and then the gluing of the circular part of the workpiece can be realized.

[0005] Preferably, a rubber anti-skid pad is fixed symmetrically to the lower end surface of the bottom plate, and a vertical plate is fixed symmetrically to the upper end surface of the bottom plate. The anti-skid pad can increase the friction between the bottom plate and the desktop to ensure the stability of the device.

[0006] Preferably, a fixing plate is fixed symmetrically on the lower end surface of the support plate, and a cross bar is fixed symmetrically on the fixing plate front and back, and the cross bar and the vertical plate are slidably connected, one end of a first spring is fixed on the fixing plate, and the other end of the first spring is fixed on the vertical plate. When the support plate is moved under force, the sliding guiding action between the cross bar and the vertical plate can ensure the stability of the movement of the support plate, and the elastic action of the first spring can provide a basic force for the automatic reset of the support plate.

[0007] Preferably, the horizontal distance between the support plate and the connecting frame is equal to the horizontal distance between the convex rack and the gear, and the horizontal distance between the support plate and the connecting frame is greater than the length of the long strip structure of the workpiece. The above length limitation can provide a basic guarantee for achieving comprehensive gluing of the workpiece.

[0008] Preferably, a positioning rod is fixed to the lower end surface of the positioning plate, and the positioning rod and the support plate are nested and connected, and ear plates are symmetrically fixed to the outer side of the positioning plate. When the positioning plate is installed, the accuracy of the installation position of the positioning plate can be ensured through the nested positioning effect between the positioning rod and the support plate, thereby providing a basic guarantee for accurate dispensing operations in the later stage.

[0009] Preferably, positioning grooves are evenly arranged on the positioning plate, and the positioning grooves and the workpiece are nested and connected, and the positioning grooves and the dispensing mechanism are distributed in a one-to-one correspondence. Through the nesting effect between the positioning grooves and the workpiece, the limiting effect of the workpiece can be achieved, thereby ensuring the stability of the workpiece during the dispensing process.

[0010] Preferably, the lower end surface of the connecting frame is lower than the lower end surface of the dispensing mechanism, and the connecting frame can achieve a pushing effect by contacting the support plate. Through the above structure, a basic force can be provided for the movement of the support plate, thereby ensuring the normal operation of the device.

[0011] Preferably, the glue dispensing mechanism consists of a glue storage cylinder, a delivery pump and a glue dispensing head. The delivery pump is fixed to the lower end of the glue storage cylinder, and the delivery pump and the glue dispensing head are connected to each other. Through the above structure, normal glue dispensing can be ensured.

[0012] Preferably, the glue suction mechanism consists of a heating barrel, a movable rod, a high temperature resistant piston, a second spring, a top plate and a ball bearing. The heating barrel is fixed on the right side of the glue storage cylinder, and the glue storage cylinder is connected to the glue dispensing head through a conduit, and the movable rod is slidably connected to the heating barrel, and a high temperature resistant piston is fixed to the upper end of the movable rod, the high temperature resistant piston is slidably connected in the heating barrel, and one end of the second spring is fixed on the high temperature resistant piston, and the other end of the second spring is fixed in the heating barrel. The exhaust function of the heating barrel can be realized through the action of the movable rod and the high temperature resistant piston. The residual glue in the glue dispensing head can be sucked out by exhausting air after glue dispensing, which can avoid the glue dispensing head from being blocked and the glue pulling phenomenon after the glue dispensing is completed. In combination with the action of the second spring, a basic guarantee can be provided for the automatic reset of the movable rod and the high temperature resistant piston.

[0013] Preferably, a top plate is fixed to the lower end of the movable rod, and two ball bearings are symmetrically installed on the front and rear of the lower end surface of the top plate, and the ball bearings can roll in contact with the positioning plate. At the same time, the distance between the two ball bearings is greater than the width of the workpiece, and the lower end surface of the top plate is lower than the lower end surface of the dispensing head. Through the above structure, a basic force can be provided for the movement of the movable rod and the high-temperature resistant piston, and with the action of the ball bearings, the friction between the top plate and the positioning plate can be reduced, thereby ensuring the normal operation of the device.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the uniform glue dispensing device for earphone production adopts a linear moving mechanism in conjunction with a linked eccentric rotating mechanism, which can achieve a comprehensive and uniform glue dispensing effect on the workpiece. The entire structure is realized by a mechanical structure, and no special programming operation is required, which improves the convenience of using the device. In conjunction with the linked glue suction mechanism, the glue remaining in the glue dispensing head can be collected after the glue dispensing is completed, which can avoid the residual glue clogging the glue dispensing head and the glue on the surface of the workpiece due to the wire drawing phenomenon caused by the viscosity, thereby better meeting the glue dispensing needs. The specific contents are as follows:

[0015] 1. The uniform glue dispensing device for earphone production, when performing glue dispensing operation, drives the connecting frame, the mounting plate and the glue dispensing mechanism to move horizontally through the second cylinder, so as to realize the glue dispensing operation at the position of the long strip structure of the workpiece. When the connecting frame contacts the support plate and pushes the support plate to move, the meshing transmission between the gear and the convex rack can make the rotating shaft, the eccentric shaft of the disc and the glue dispensing mechanism rotate, so as to realize the glue dispensing of the circular part of the workpiece, and the movement of the support plate can synchronously drive the workpiece to move, so as to ensure that when the circular part of the workpiece is glued, the center of the workpiece is located on the central axis of the rotating shaft, so as to ensure the glue dispensing of the circular part of the workpiece;

[0016] 2. The uniform dispensing device for earphone production, during the dispensing process, the ball at the lower end of the top plate first contacts the positioning plate, so that the high-temperature resistant piston and the movable rod move upward, so that the heating barrel is in an air-exhausted state. When the dispensing is completed, there is glue remaining in the dispensing head. At this time, when the ball is separated from the positioning plate, the elastic action of the second spring can realize the vacuum effect of the heating barrel, so that the residual glue in the dispensing head enters the heating barrel for preservation, avoiding the glue remaining in the dispensing head and solidifying, which leads to the blockage of the dispensing head, ensuring the service life of the device, and by extracting the glue, it can be avoided that the glue at the end of the dispensing head and the glue on the surface of the workpiece will produce wire drawing phenomenon, which will cause the glue to splash out, and after the extracted glue enters the heating barrel, it can be discharged for use at the next dispensing, avoiding waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall isometric three-dimensional structure of the device of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the device of the present invention when viewed from above;

[0019] Figure 3 This is a schematic diagram of an exploded three-dimensional structure of a support plate and a positioning plate of the present invention;

[0020] Figure 4 This is a bottom view of the structure of the movable plate of the present invention;

[0021] Figure 5 It is a schematic diagram of the isometric three-dimensional structure of the mounting plate of the present invention;

[0022] Figure 6 This is a schematic diagram of the isometric three-dimensional structure of the rubber storage cylinder of the present invention;

[0023] Figure 7 It is a schematic diagram of an isometric bottom-up stereoscopic structure of the present invention;

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the heating barrel of the present invention in a side view.

[0025] In the figure: 1, bottom plate; 101, anti-skid pad; 102, vertical plate; 2, support rod; 3, electric control box; 4, support plate; 401, fixed plate; 402, cross bar; 403, first spring; 5, positioning plate; 501, positioning rod; 502, ear plate; 503, positioning groove; 6, workpiece; 7, first cylinder; 8, movable plate; 801, convex rack; 9, connecting rod; 10, second cylinder; 11, mounting plate; 1101 , connecting frame; 1102, sliding rod; 1103, rotating shaft; 1104, gear; 1105, disc; 1106, eccentric shaft; 12, glue dispensing mechanism; 1201, glue storage cylinder; 1202, delivery pump; 1203, glue dispensing head; 13, glue suction mechanism; 1301, heating barrel; 1302, movable rod; 1303, high temperature resistant piston; 1304, second spring; 1305, top plate; 1306, ball bearing. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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.

[0027] See also Figure 1-Figure 8The present invention provides a technical solution: a uniform dispensing device for earphone production, comprising a bottom plate 1, a support rod 2, an electric control box 3 and a first cylinder 7, one end of the support rod 2 is fixed on the bottom plate 1, the other end of the support rod 2 is fixed on the electric control box 3, the first cylinder 7 is fixed on the lower end surface of the electric control box 3, a support plate 4 is arranged above the bottom plate 1, the support plate 4 and the positioning plate 5 are connected to each other, a workpiece 6 is placed on the positioning plate 5, a movable plate 8 is fixed to the output end of the first cylinder 7, a convex rack 801 is evenly fixed to the lower end surface of the movable plate 8, a connecting rod 9 is fixed to the right side of the movable plate 8, a second cylinder 10 is fixed on the connecting rod 9, a mounting plate 11 is arranged below the movable plate 8, a connecting frame 1101 is fixed to the right side of the mounting plate 11, the connecting frame 1101 and the output end of the second cylinder 10 are connected to each other, sliding rods 1102 are symmetrically fixed on the connecting frame 1101, the sliding rods 1102 and the connecting rods 9 are slidably connected, and the mounting plate 11 is connected to the bearing on the There is a rotating shaft 1103, a gear 1104 is fixed on the upper end of the rotating shaft 1103, the gear 1104 corresponds to the convex rack 801 one by one, and the gear 1104 and the convex rack 801 are meshingly connected, a disk 1105 is fixed on the lower end of the rotating shaft 1103, an eccentric shaft 1106 is fixed on the lower end of the disk 1105, and the diameter of the rotating path of the eccentric shaft 1106 is smaller than the diameter of the circular structure on the workpiece 6, a dispensing mechanism 12 is fixed directly below the eccentric shaft 1106, and a glue suction mechanism 13 is installed on the side of the dispensing mechanism 12. During the dispensing process, the second cylinder 10 drives the mounting plate 11 to move horizontally, thereby driving the dispensing mechanism 12 to move horizontally, so as to realize the dispensing of the long strip part of the workpiece 6, and then with the meshing transmission effect between the gear 1104 and the convex rack 801, the eccentric shaft 1106 can be rotated, thereby driving the dispensing mechanism 12 to rotate, and then the dispensing of the circular part of the workpiece 6 can be realized.

[0028] A rubber anti-skid pad 101 is symmetrically fixed to the lower end surface of the bottom plate 1, and a vertical plate 102 is symmetrically fixed to the upper end surface of the bottom plate 1; a fixed plate 401 is symmetrically fixed to the lower end surface of the support plate 4, and a cross bar 402 is symmetrically fixed to the fixed plate 401, and the cross bar 402 is slidably connected to the vertical plate 102, one end of the first spring 403 is fixed to the fixed plate 401, and the other end of the first spring 403 is fixed to the vertical plate 102; the horizontal distance between the support plate 4 and the connecting frame 1101 is equal to the horizontal distance between the convex rack 801 and the gear 1104, and the horizontal distance between the support plate 4 and the connecting frame 1101 is greater than the length of the long strip structure of the workpiece 6; the lower end of the positioning plate 5 A positioning rod 501 is fixed on the surface, and the positioning rod 501 and the support plate 4 are nested and connected, and an ear plate 502 is fixed symmetrically on the outer side of the positioning plate 5; positioning grooves 503 are evenly opened on the positioning plate 5, and the positioning grooves 503 and the workpiece 6 are nested and connected, and the positioning grooves 503 and the dispensing mechanism 12 are distributed one by one; the lower end surface of the connecting frame 1101 is lower than the lower end surface of the dispensing mechanism 12, and the connecting frame 1101 is in contact with the support plate 4 to achieve a pushing effect; the dispensing mechanism 12 is composed of a glue storage cylinder 1201, a delivery pump 1202 and a dispensing head 1203, and a delivery pump 1202 is fixed to the lower end of the glue storage cylinder 1201, and the delivery pump 1202 and the dispensing head 1203 are connected to each other;

[0029] When using the uniform dispensing device for earphone production, Figure 1-Figure 8As shown, the entire device is powered by an external power supply, and then the workpiece 6 that needs to be glued is nested with the positioning groove 503 to achieve the positioning and installation of the workpiece 6. After multiple workpieces 6 are installed, the positioning plate 5 and the support plate 4 can be positioned and installed by holding the ear plate 502 and cooperating with the nesting effect between the positioning rod 501 and the support plate 4, thereby realizing the loading of the workpiece 6. When glue is being dispensed, the first cylinder 7 is controlled to extend, thereby driving the movable plate 8, the mounting plate 11 and the glue dispensing mechanism 12 to move downward until the lower end of the glue dispensing head 1203 moves to 1 mm above the workpiece 6. At this time, starting the delivery pump 1202 can The glue material in the glue storage cylinder 1201 is transported to the glue dispensing head 1203 for spraying, thereby realizing the glue dispensing effect. When the delivery pump 1202 is started, the second cylinder 10 is controlled to extend at the same time. The extension of the second cylinder 10 can drive the connecting frame 1101, the mounting plate 11 and the glue dispensing head 1203 to move horizontally. The sliding guide effect between the slide bar 1102 and the connecting rod 9 can ensure the stability of the movement of the connecting frame 1101, the mounting plate 11 and the glue dispensing head 1203. The movement of the glue dispensing head 1203 can realize the glue dispensing effect on the long strip part of the workpiece 6. When the connecting frame 1101 moves to contact with the support plate 4, the gear 110 4 is meshed with the convex rack 801, and the center position of the circular part on the workpiece 6 is exactly located on the vertical center axis of the rotating shaft 1103. At this time, the connecting frame 1101, the mounting plate 11 and the dispensing head 1203 continue to move horizontally, so that the connecting frame 1101 can generate a thrust on the support plate 4, so that the support plate 4, the positioning plate 5 and the workpiece 6 can move horizontally synchronously. The sliding effect between the cross bar 402 and the vertical plate 102 can ensure the stability of the movement of the support plate 4, the positioning plate 5 and the workpiece 6, that is, the center position of the circular part on the workpiece 6 is always located on the vertical center axis of the rotating shaft 1103. The meshing transmission of the rack 801 can rotate the rotating shaft 1103, thereby driving the disc 1105, the eccentric shaft 1106 and the dispensing head 1203 to rotate. Through the rotation of the dispensing head 1203, the annular dispensing effect of the circular part on the workpiece 6 can be achieved, and then the uniform dispensing effect of multiple workpieces 6 can be achieved at one time. The operation is convenient and simple. After the dispensing is completed, the device can be reset by contracting the second cylinder 10 and the first cylinder 7. When the connecting frame 1101 is separated from the supporting plate 4, the elastic action of the first spring 403 can automatically reset the supporting plate 4 to facilitate the next dispensing.

[0030] The glue sucking mechanism 13 is composed of a heating barrel 1301, a movable rod 1302, a high temperature resistant piston 1303, a second spring 1304, a top plate 1305 and a ball 1306. The heating barrel 1301 is fixed to the right side of the glue storage cylinder 1201, and the glue storage cylinder 1201 is connected to the glue dispensing head 1203 through a conduit, and the heating barrel 1301 is slidably connected to the movable rod 1302, and the upper end of the movable rod 1302 is fixed with a high temperature resistant piston 1303, and the high temperature resistant piston 1303 is slidably connected to the heating barrel 13 01, and one end of the second spring 1304 is fixed on the high temperature resistant piston 1303, and the other end of the second spring 1304 is fixed in the heating barrel 1301; a top plate 1305 is fixed at the lower end of the movable rod 1302, and two balls 1306 are symmetrically installed on the front and rear of the lower end surface of the top plate 1305, and the balls 1306 are in contact with the positioning plate 5 and can roll, and at the same time, the distance between the two balls 1306 is greater than the width of the workpiece 6, and the lower end surface of the top plate 1305 is lower than the lower end surface of the dispensing head 1203;

[0031] During the dispensing process, Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, when the dispensing mechanism 12 moves downward, it also drives the glue sucking mechanism 13 to move downward. Since the lower end surface of the top plate 1305 is lower than the lower end surface of the dispensing head 1203, the ball 1306 at the lower end of the top plate 1305 can contact the positioning plate 5 before the dispensing head 1203 moves down to the preset position. When the dispensing head 1203 continues to move down to the preset position, the movable rod 1302 is forced to move upward, and at the same time drives the high temperature resistant piston 1303 to move upward, so that the air inside the heating barrel 1301 is discharged outward. At this time, the second spring 1304 is stretched. During the dispensing process, the rolling action between the ball 1306 and the positioning plate 5 can ensure the normal dispensing. When the dispensing is completed, the first cylinder 7 contracts and drives the dispensing mechanism 12 upward. When the glue head 1203 moves, under the action of the second spring 1304, the movable rod 1302 and the high temperature resistant piston 1303 can slide downward in the heating barrel 1301, so that a negative pressure state is formed in the heating barrel 1301, and with the action of the catheter, the residual glue in the glue dispensing head 1203 can enter the heating barrel 1301 through the catheter for storage, thereby preventing the glue from solidifying in the glue dispensing head 1203 and causing blockage, thereby affecting the service life of the device, and preventing the glue in the glue dispensing head 1203 and the glue on the surface of the workpiece 6 from drawing due to viscosity when the glue dispensing head 1203 moves upward, resulting in the problem of glue splashing out, so as to better meet the actual glue dispensing processing needs. This is the working principle of the uniform glue dispensing device for earphone production.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A uniform dispensing device for earphone production, comprising a base plate (1), a support rod (2), an electric control box (3) and a first cylinder (7), wherein one end of the support rod (2) is fixed to the base plate (1), the other end of the support rod (2) is fixed to the electric control box (3), and the first cylinder (7) is fixed to the lower end surface of the electric control box (3), characterized in that: A support plate (4) is arranged above the bottom plate (1), the support plate (4) and the positioning plate (5) are connected to each other, a workpiece (6) is placed on the positioning plate (5), a movable plate (8) is fixed to the output end of the first cylinder (7), a convex rack (801) is evenly fixed to the lower end surface of the movable plate (8), a connecting rod (9) is fixed to the right side of the movable plate (8), a second cylinder (10) is fixed to the connecting rod (9), a mounting plate (11) is arranged below the movable plate (8), a connecting frame (1101) is fixed to the right side of the mounting plate (11), the connecting frame (1101) and the output end of the second cylinder (10) are connected to each other, a sliding rod (1102) is symmetrically fixed to the connecting frame (1101), the sliding rod (1102) and the connecting rod (9) are in sliding connection, a rotating shaft (1103) is connected to the bearing on the mounting plate (11), and a gear (1104) is fixed to the upper end of the rotating shaft (1103). ), the gear (1104) corresponds to the convex rack (801) one by one, and the gear (1104) and the convex rack (801) are meshingly connected, a disc (1105) is fixed at the lower end of the rotating shaft (1103), an eccentric shaft (1106) is fixed at the lower end of the disc (1105), and the diameter of the rotating path of the eccentric shaft (1106) is smaller than the diameter of the circular structure on the workpiece (6), and a dispensing mechanism (12) is fixed directly below the eccentric shaft (1106), The glue dispensing mechanism (12) is provided with a glue suction mechanism (13) on the side thereof, and the second cylinder (10) drives the mounting plate (11) to move horizontally, thereby driving the glue dispensing mechanism (12) to move horizontally, thereby achieving glue dispensing on the long strip portion of the workpiece (6); and the meshing transmission effect between the gear (1104) and the convex rack (801) causes the eccentric shaft (1106) to rotate, thereby driving the glue dispensing mechanism (12) to rotate, thereby achieving glue dispensing on the circular portion of the workpiece (6); The glue dispensing mechanism (12) is composed of a glue storage cylinder (1201), a delivery pump (1202) and a glue dispensing head (1203). The delivery pump (1202) is fixed at the lower end of the glue storage cylinder (1201), and the delivery pump (1202) and the glue dispensing head (1203) are connected to each other. The glue suction mechanism (13) is composed of a heating barrel (1301), a movable rod (1302), a high temperature resistant piston (1303), a second spring (1304), a top plate (1305) and a ball (1306). The heating barrel (1301) is fixed on the right side of the glue storage cylinder (1201), and the glue storage cylinder (1201) is connected to the glue dispensing head (1203) via a conduit. The movable rod (1302) is slidably connected to the heating barrel (1301). A high temperature resistant piston (1303) is fixed to the upper end of the movable rod (1302), and the high temperature resistant piston (1303) is slidably connected in the heating barrel (1301), and one end of a second spring (1304) is fixed on the high temperature resistant piston (1303), and the other end of the second spring (1304) is fixed in the heating barrel (1301); a top plate (1305) is fixed to the lower end of the movable rod (1302), and two balls (1306) are symmetrically mounted on the lower end surface of the top plate (1305) in the front and rear directions, and the balls (1306) are in contact with the positioning plate (5) to roll, and the distance between the two balls (1306) is greater than the width of the workpiece (6), and the lower end surface of the top plate (1305) is lower than the lower end surface of the dispensing head (1203).

2. The uniform glue dispensing device for earphone production according to claim 1, characterized in that: A rubber anti-skid pad (101) is fixed symmetrically to the lower end surface of the bottom plate (1), and a vertical plate (102) is fixed symmetrically to the upper end surface of the bottom plate (1).

3. The uniform glue dispensing device for earphone production according to claim 2, characterized in that: A fixing plate (401) is fixed symmetrically to the lower end surface of the support plate (4), and a cross bar (402) is fixed symmetrically to the front and back of the fixing plate (401), and the cross bar (402) is slidably connected to the vertical plate (102), and one end of a first spring (403) is fixed to the fixing plate (401), and the other end of the first spring (403) is fixed to the vertical plate (102).

4. The uniform dispensing device for earphone production according to claim 1, characterized in that: The horizontal distance between the support plate (4) and the connecting frame (1101) is equal to the horizontal distance between the convex rack (801) and the gear (1104), and the horizontal distance between the support plate (4) and the connecting frame (1101) is greater than the length of the long strip structure of the workpiece (6).

5. The uniform glue dispensing device for earphone production according to claim 1, characterized in that: A positioning rod (501) is fixed to the lower end surface of the positioning plate (5), and the positioning rod (501) and the support plate (4) are nested and connected. Ear plates (502) are symmetrically fixed to the outer side of the positioning plate (5).

6. The uniform glue dispensing device for earphone production according to claim 1, characterized in that: The positioning plate (5) is evenly provided with positioning grooves (503), the positioning grooves (503) and the workpiece (6) are nested and connected, and the positioning grooves (503) and the glue dispensing mechanisms (12) are distributed in a one-to-one correspondence.

7. The uniform glue dispensing device for earphone production according to claim 1, characterized in that: The lower end surface of the connecting frame (1101) is lower than the lower end surface of the glue dispensing mechanism (12), and the connecting frame (1101) is in contact with the supporting plate (4) to achieve a pushing effect.

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