A dispensing device with precise pressure control

Abstract

The invention discloses a glue dispensing device with precise pressure control, comprising a base, a turntable rotatably arranged on the base, the turntable driven to rotate by a motor, an anti-fool mechanism, a first glue dispensing machine, a curing machine and a second glue dispensing machine sequentially arranged on the base along the rotation direction of the turntable, a plurality of glue dispensing fixtures for placing earphone fixtures and a fixing frame located in the middle of the turntable are arranged on the turntable, the glue dispensing fixture comprises a glue dispensing seat and an ejector pin slidably connected to the glue dispensing seat, the bottom of the fixing frame is connected to the base and a locking component and an unlocking component are arranged thereon, the locking component and the unlocking component are respectively located on one side of the first glue dispensing machine and the second glue dispensing machine, when the turntable rotates, the locking component and the unlocking component can both contact with the ejector pin and make the ejector pin slide on the glue dispensing seat, so as to avoid product crushing, effectively reduce the product scrap rate and improve the glue dispensing efficiency and glue dispensing stability.

Description

Technical Field

[0001] The present invention relates to the technical field of earphone processing devices, and in particular to a glue dispensing device capable of precisely controlling pressure. Background Art

[0002] Headphones are mostly used in mobile phones, walkmans, radios, portable video games and digital audio players. Currently, glue is usually used to assemble and combine the inner mold plastic parts of the headphone plug with the plug sleeve. The existing bonding methods mainly include manual bonding and glue dispenser bonding. Manual bonding is not only inefficient but also prone to high scrap rate due to inaccurate bonding position. When glue dispenser bonding presses the product to dispense glue, it is easy to damage the product by directly pressing the product. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the present invention is to provide a dispensing device with precise pressure control which can avoid product crushing, effectively reduce product scrap rate and improve dispensing efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is: a dispensing device with precise pressure control, comprising a base, a turntable is rotatably arranged on the base, and the turntable is driven to rotate by a motor, and an anti-fool mechanism, a first dispensing machine, a curing machine and a second dispensing machine are sequentially arranged on the base along the rotation direction of the turntable, and a plurality of dispensing fixtures for placing earphone fixtures and a fixed frame located in the middle of the turntable are arranged on the turntable, the dispensing fixture comprises a dispensing seat and a ejector pin slidably connected to the dispensing seat, the bottom of the fixed frame is connected to the base and a locking assembly and an unlocking assembly are arranged thereon, the locking assembly and the unlocking assembly are respectively located on one side of the first dispensing machine and the second dispensing machine, and when the turntable rotates, the locking assembly and the unlocking assembly can both contact the ejector pin and make the ejector pin slide on the dispensing seat.

[0005] Furthermore, the dispensing seat includes a clamp fixing seat, a support seat, a clamp extension seat and a clamp snap-fit ​​seat. The clamp fixing seat is tilted on the support seat, one end of the clamp extension seat is connected to the clamp fixing seat, and the other end is connected to the clamp snap-fit ​​seat. The free end of the clamp snap-fit ​​seat extends away from the support seat and a snap-fit ​​groove is provided at the end.

[0006] Further, the ejector pin comprises an ejector pin fixing block, an ejector pin sliding rod, an engaging rotating plate, a pushing pin and an ejector pin slide rail, the fixture extension seat is slidably connected to the ejector pin slide rail at one end away from the fixture fixing seat, the top of the ejector pin slide rail is connected to the ejector pin sliding rod through a partition plate, and the free end of the ejector pin sliding rod passes through the fixture engaging seat, a spring is sleeved on the ejector pin sliding rod, two ends of the spring are respectively against the fixture extension seat and the partition plate, one end of the partition plate extends in a direction away from the fixture engaging seat and is connected to the ejector pin fixing block, the pushing pin is arranged at the bottom of the ejector pin fixing block, one end of the engaging rotating plate is rotatably connected to the ejector pin fixing block, and the other end is provided with an engaging protrusion matching the engaging groove, and the fixture engaging seat and the engaging rotating plate can be engaged with each other through the engaging groove and the engaging protrusion.

[0007] Furthermore, the locking assembly and the unlocking assembly respectively include an upper locking positioning slide and an unlocking positioning slide, and the tops of the upper locking positioning slide and the unlocking positioning slide both have inclined surfaces, the height of the upper locking positioning slide gradually decreases along the rotation direction of the turntable, and the height of the unlocking positioning slide gradually increases along the rotation direction of the turntable, and the locking assembly also includes a push rod arranged on the fixed frame, and the push rod is located above the upper locking positioning slide.

[0008] Furthermore, a positioning rod is provided on the ejector fixing block, and the free end of the positioning rod extends toward the fixing frame. When the turntable rotates, the positioning rod can contact the top of the upper locking positioning slide and the unlocking positioning slide and drive the push pin to move closer to / away from the fixture fixing seat.

[0009] Furthermore, the fool-proof mechanism includes a fool-proof bracket and an in-place sensor, wherein the in-place sensor is arranged on the fool-proof bracket and the ray can intersect with the fixture fixing seat.

[0010] Preferably, the curing machine is a point light source curing machine.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. By setting a top pin to press the product, the problems of low efficiency and accuracy of traditional manual bonding and easy damage to the product by the dispensing machine are avoided;

[0013] 2. By setting the positioning rod, locking the positioning slide plate, and unlocking the positioning slide plate, the push pin has a buffering process when pressing the product, avoiding damage to the product caused by the force generated by the instantaneous downward movement;

[0014] 3. By setting a spring, the push pin can be automatically reset, and glue can be dispensed at two different parts of the earphone, realizing automatic glue dispensing at multiple parts and improving work efficiency;

[0015] 4. By setting up an anti-mistake mechanism, the earphones can be monitored for their position, thus improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of the present invention;

[0017] Figure 2 A schematic diagram of the structure of the present invention.

[0018] In the figure:

[0019] 1-base; 2-turntable; 3-anti-fool mechanism; 4-first dispensing machine; 5-curing machine; 6-second dispensing machine; 7-dispensing fixture; 8-fixed frame; 9-positioning rod; 10-upper locking slide; 11-push rod; 12-unlocking positioning slide; 13-clamp fixing seat; 14-support seat; 15-clamp extension seat; 16-clamp engaging seat; 17-engaging groove; 18-thimble fixing block; 19-thimble sliding rod; 20-engaging rotating plate; 21-pushing pin; 22-thimble slide rail; 23-spring; 24-partition plate; 25-engaging protrusion. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] See attached Figure 1 , Attachment Figure 2 As shown, a dispensing device with precise pressure control includes a base 1, a turntable 2 is rotatably arranged on the base 1, and the turntable 2 is driven to rotate by a motor. An anti-fool mechanism 3, a first dispensing machine 4, a curing machine 5, and a second dispensing machine 6 are sequentially arranged on the base 1 along the rotation direction of the turntable 2. The anti-fool mechanism 3 includes an anti-fool bracket and an in-place sensor. The in-place sensor is arranged on the anti-fool bracket and the rays can intersect with the fixture fixing seat 13. The curing machine 5 adopts a point light source curing machine, and the first dispensing machine 4 and the second dispensing machine 6 use EVA glue and silicone respectively.

[0022] The turntable 2 is provided with a plurality of glue dispensing fixtures 7 for placing headphone fixtures and a fixing frame 8 located in the middle of the turntable 2. The glue dispensing fixture 7 includes a glue dispensing seat and an ejector pin. The glue dispensing seat includes a fixture fixing seat 13, a support seat 14, a fixture extension seat 15 and a fixture clamping seat 16. The fixture fixing seat 13 is tiltedly arranged on the support seat 14. One end of the fixture extension seat 15 is connected to the fixture fixing seat 13, and the other end is connected to the fixture clamping seat 16. The free end of the fixture clamping seat 16 extends away from the support seat 14 and a clamping groove 17 is provided at the end. The ejector pin includes an ejector pin fixing block 18, an ejector pin sliding rod 19, a clamping rotating plate 20, a push pin 21 and an ejector pin slide rail 22. The fixture extension seat 15 is away from the fixture fixing seat 1 One end of the ejector slide rail 22 is slidably connected to the ejector slide rail 22, the top of the ejector slide rail 22 is connected to the ejector slide rod 19 through a partition 24, and the free end of the ejector slide rod 19 passes through the fixture clamping seat 16. A spring 23 is sleeved on the ejector slide rod 19, and the two ends of the spring 23 are respectively against the fixture extension seat 15 and the partition 24. One end of the partition 24 extends away from the fixture clamping seat 16 and is connected to the ejector fixing block 18. The push pin 21 is set at the bottom of the ejector fixing block 18. One end of the clamping rotating plate 20 is rotatably connected to the ejector fixing block 18, and the other end is provided with a clamping protrusion 25 matching the clamping groove 17. The clamp clamping seat 16 and the clamping rotating plate 20 can be engaged through the clamping groove 17 and the clamping protrusion 25.

[0023] The bottom of the fixed frame 8 is connected to the base 1 and a locking component and an unlocking component are arranged thereon. The locking component and the unlocking component are respectively located on one side of the first dispensing machine 4 and the second dispensing machine 6. The locking component and the unlocking component respectively include an upper locking positioning slide 10 and an unlocking positioning slide 12. The tops of the upper locking positioning slide 10 and the unlocking positioning slide 12 both have inclined surfaces. The height of the upper locking positioning slide 10 gradually decreases along the rotation direction of the turntable 2, and the height of the unlocking positioning slide 12 gradually increases along the rotation direction of the turntable 2. The locking component also includes a push rod 11 arranged on the fixed frame 8, and the push rod 11 is located above the upper locking positioning slide 10. A positioning rod 9 is arranged on the ejector fixing block 18, and the free end of the positioning rod 9 extends toward the fixed frame 8. When the turntable 2 rotates, the positioning rod 9 can contact the top of the upper locking positioning slide 10 and the unlocking positioning slide 12 and drive the ejector slide rail 22 to make vertical reciprocating motion along the fixture extension seat 15, pushing the needle 21 to move close to / away from the fixture fixing seat 13.

[0024] Specific working process: the earphone fixture with the earphone to be processed is placed on the dispensing fixture 7, the product loading is completed, and the earphone to be processed is detected by the in-place sensor. When dispensing glue on the first part of the earphone, the positioning rod 9 moves from the highest end of the upper locking positioning slide 10 to its lowest end. At this time, the push rod 11 pushes the engaging rotating plate 20, so that the engaging protrusion 25 moves away from the engaging groove 17. The engaging rotating plate 20 drives the ejector slide rail 22 to move downward along the fixture extension seat 15 under the action of gravity, and the push needle 21 approaches the earphone fixture and presses it, so that the first dispensing machine 4 can perform efficient and stable dispensing.

[0025] After gluing the first part, the curing machine 5 solidifies the gluing part. Since the second gluing part of the earphone is below the pressing part of the push pin 21, it needs to be unlocked before gluing the second part. When the turntable 2 moves into place, the positioning rod 9 moves from the lowest end of the unlocking positioning slide plate 12 to its highest end. At this time, the push rod 11 moves away from the engaging rotating plate 20. The engaging rotating plate 20 drives the push pin 21 to move away from the earphone fixture under the elastic action of the spring 23, which facilitates the second gluing machine 6 to perform efficient and stable gluing, and finally the processed products are unloaded.

[0026] The above implementation modes are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A dispensing device with precise pressure control, comprising a base (1), characterized in that: A turntable (2) is rotatably arranged on the base (1); an anti-mistake mechanism (3), a first glue dispenser (4), a curing machine (5) and a second glue dispenser (6) are sequentially arranged on the base (1) along the rotation direction of the turntable (2); a plurality of glue dispensers (7) for placing earphone clamps and a fixed frame (8) located in the middle of the turntable (2) are arranged on the turntable (2); the glue dispenser (7) comprises a glue dispenser seat and an ejector pin slidably connected to the glue dispenser seat; the bottom of the fixed frame (8) is connected to the base (1) and a locking component and an unlocking component are arranged on the fixed frame; the locking component and the unlocking component are respectively located on one side of the first glue dispenser (4) and the second glue dispenser (6); when the turntable (2) rotates, the locking component and the unlocking component can both contact the ejector pin and cause the ejector pin to slide on the glue dispenser seat; The dispensing seat comprises a clamp fixing seat (13), a supporting seat (14), a clamp extension seat (15) and a clamp engaging seat (16), wherein an end of the clamp engaging seat (16) is provided with an engaging groove (17). The ejector comprises an ejector fixing block (18), an ejector sliding rod (19), a locking rotating plate (20), a pushing pin (21) and an ejector sliding rail (22); the end of the fixture extension seat (15) away from the fixture fixing seat (13) is slidably connected to the ejector sliding rail (22); the top of the ejector sliding rail (22) is connected to the ejector sliding rod (19) through a partition plate (24); and the free end of the ejector sliding rod (19) passes through the fixture locking seat (16); a spring (23) is sleeved on the ejector sliding rod (19); and the two ends of the spring (23) are respectively connected to the ejector sliding rod (19). The fixture extension seat (15) and the partition (24) are abutted against each other, one end of the partition (24) extends in a direction away from the fixture clamping seat (16) and is connected to the ejector fixing block (18), the push pin (21) is arranged at the bottom of the ejector fixing block (18), one end of the clamping rotating plate (20) is rotatably connected to the ejector fixing block (18), and the other end is provided with a clamping protrusion (25) matching the clamping groove (17), the fixture clamping seat (16) and the clamping rotating plate (20) can be engaged through the clamping groove (17) and the clamping protrusion (25), The locking assembly and the unlocking assembly respectively comprise an upper locking positioning slide plate (10) and an unlocking positioning slide plate (12); the upper locking positioning slide plate (10) and the unlocking positioning slide plate (12) both have inclined surfaces at their tops; the height of the upper locking positioning slide plate (10) gradually decreases along the rotation direction of the turntable (2); the height of the unlocking positioning slide plate (12) gradually increases along the rotation direction of the turntable (2); the locking assembly further comprises a push rod (11) arranged on the fixing frame (8); the push rod (11) is located above the upper locking positioning slide plate (10); A positioning rod (9) is provided on the ejector pin fixing block (18), and the free end of the positioning rod (9) extends toward the fixing frame (8). When the turntable (2) rotates, the positioning rod (9) can contact the top of the upper locking positioning slide plate (10) and the unlocking positioning slide plate (12) and drive the push pin (21) to move toward / away from the fixture fixing seat (13).

2. A dispensing device with precise pressure control according to claim 1, characterized in that: The fool-proof mechanism (3) comprises a fool-proof bracket and an in-place sensor, wherein the in-place sensor is arranged on the fool-proof bracket and a ray can intersect with the clamp fixing seat (13).

3. The glue dispensing device with precise pressure control according to claim 1, characterized in that: The curing machine (5) is a point light source curing machine.

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