Unreeling device of LED support injection molding machine

Abstract

The utility model relates to the technical field of LED (Light Emitting Diode) production, in particular to an unwinding device of an LED bracket injection molding machine, which comprises a main bracket and a guide mechanism, an unwinding mechanism is arranged on the main bracket, a material disc is detachably arranged on the unwinding mechanism, and the unwinding mechanism can control the material disc to rotate so as to unwind a material belt; the guide mechanism is arranged on one side of the main support and located between the main support and the injection molding machine. The guide mechanism is provided with a guide bracket, the guide bracket is provided with a guide seat, the guide seat can be subjected to lifting adjustment in the vertical direction, and a guide roller group is rotationally arranged on the guide seat; in the process that the material disc is gradually unwound, the diameter of a coiled material formed by winding a material belt is gradually reduced, by controlling the change of the vertical height of the guide seat, the material belt can keep a certain tensile force and is small in bending angle in the process that the material belt enters an injection molding machine, creases of the material belt can be reduced, and the yield is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED production, and more specifically, to an unwinding device for an LED bracket injection molding machine. Background Art

[0002] An LED bracket is the bottom base of an LED lamp bead before encapsulation. Its function is to fix the LED chip, weld the positive and negative electrodes, and provide structural support during the encapsulation process. LED brackets are usually made of materials with good electrical conductivity, such as copper, iron, aluminum, or ceramics, in order to effectively conduct current and provide the necessary mechanical strength and heat dissipation capacity. The existing manufacturing process of LED brackets mainly includes processes such as stamping, electroplating, injection molding, bending, and cutting. In the injection molding process, a metal strip made into a coil is gradually unwound and fed into an injection molding machine, and thermoplastic plastic is injected into a mold to form a plastic frame that wraps the metal strip and the chip, which not only enhances the mechanical strength of the product but also provides environmental isolation for internal components.

[0003] During injection molding, the injection molding machine uses a mold to perform injection molding on the metal strip to form the required shape. When the existing injection molding machine is working, the strip is prone to creases, resulting in a decrease in the yield rate. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an unwinding device for an LED bracket injection molding machine, which can reduce the occurrence of creases on the strip and improve the yield rate.

[0005] An unwinding device for an LED bracket injection molding machine according to an embodiment of the utility model includes:

[0006] A main bracket, on which at least one unwinding mechanism is arranged in the vertical direction. The unwinding mechanism can fix the material tray and control the rotation of the material tray;

[0007] A guiding mechanism, which is provided with a guiding bracket. On the guiding bracket, a guiding seat is adjustably arranged in the vertical direction, and a guiding roller set is rotatably arranged on the guiding seat.

[0008] According to some embodiments of the utility model, the guiding mechanism includes a linear drive. One end of the linear drive is hinged to the guiding seat, and the other end of the linear drive is hinged to the guiding bracket.

[0009] According to some embodiments of the utility model, the guiding roller set includes a first guiding roller and a second guiding roller; an adjustment groove is arranged on the guiding seat. The first guiding roller and the second guiding roller are respectively rotatably connected to the guiding seat through bearing units, and the bearing units are adjustably installed in the adjustment groove through fastening bolts.

[0010] According to some embodiments of the present invention, both the first guide roller and the second guide roller are hollow structures.

[0011] According to some embodiments of the utility model, a base is provided at the lower end of the guide bracket, and casters are respectively provided at the corners of the bottom of the base.

[0012] According to some embodiments of the utility model, the unwinding mechanism includes a rotary drive assembly, a clamping assembly and an unwinding shaft; the rotary drive assembly and the unwinding shaft are transmission connected to control the rotation of the unwinding shaft; the clamping assembly is arranged on the unwinding shaft to clamp the material tray.

[0013] According to some embodiments of the utility model, the rotary drive assembly includes a motor, a first sprocket, a second sprocket and a conveyor chain, the output end of the motor is fixedly connected to the first sprocket, the first sprocket is transmission-connected to the second sprocket via the conveyor chain, the second sprocket is fixedly connected to the unwinding shaft; the unwinding shaft is rotatably arranged on the main bracket.

[0014] According to some embodiments of the utility model, the clamping assembly includes a clamping sleeve, a control screw sleeve, an adjusting block, a first connecting rod, a second connecting rod and a coil flange, the coil flange is sleeved on the unwinding shaft, the clamping sleeve is axially sleeved on the unwinding shaft, the control screw sleeve is threadedly connected to the unwinding shaft, and one end of the control screw sleeve abuts the clamping sleeve; there are multiple adjusting blocks, and the multiple adjusting blocks are evenly distributed along the circumference of the clamping sleeve; one end of the adjusting block is slidably arranged on the coil flange; one end of the first connecting rod is rotatably connected to the adjusting block, and the other end of the first connecting rod is rotatably connected to the clamping sleeve; one end of the second connecting rod is rotatably connected to the adjusting block, and the other end of the second connecting rod is rotatably connected to the clamping sleeve; the first connecting rod is parallel to the second connecting rod.

[0015] According to some embodiments of the utility model, the inner peripheral wall of the clamping sleeve is provided with a sliding groove extending in the axial direction, and the unwinding shaft is provided with a sliding block corresponding to the sliding groove.

[0016] According to some embodiments of the present utility model, an arc-shaped elastic portion is provided on a side of the adjustment block away from the control screw sleeve.

[0017] According to an embodiment of the utility model, an unwinding device for an LED bracket injection molding machine has at least the following beneficial effects:

[0018] According to the solution of the present utility model, the unwind device of the LED bracket injection molding machine includes a main bracket and a guiding mechanism. A unwind mechanism is arranged on the main bracket, and a material tray is detachably arranged on the unwind mechanism. The unwind mechanism can control the rotation of the material tray, thereby realizing the unwinding of the material tape; the guiding mechanism is arranged on one side of the main bracket and is located between the main bracket and the injection molding machine; the guiding mechanism is provided with a guiding bracket, the guiding bracket is provided with a guiding seat, the guiding seat can be adjusted up and down along the vertical direction, and a guiding roller set is rotatably arranged on the guiding seat; during the gradual unwinding of the material tray, the diameter of the coil formed by winding the material tape gradually becomes smaller. By controlling the change of the vertical height of the guiding seat, when the material tape enters the injection molding machine, the material tape can not only maintain a certain tension, but also have a smaller bending angle, which can reduce the creases on the material tape and improve the yield rate. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] Figure 2 is a schematic structural diagram of the guiding mechanism of the present utility model;

[0021] Figure 3 is of the present utility model Figure 2 is a partially enlarged schematic diagram of the local structure at A;

[0022] Figure 4 is of the present utility model Figure 2 is a partially enlarged schematic diagram of the local structure at B;

[0023] Figure 5 is a partially schematic diagram of the local structure of the unwind mechanism of the present utility model;

[0024] Figure 6 is a schematic structural diagram of the unwind mechanism of the present utility model;

[0025] Figure 7 is a schematic structural diagram of the unwind shaft and the clamping sleeve of the present utility model.

[0026] In the figure:

[0027] 100 - Main bracket;

[0028] 200 - Unwind mechanism, 210 - Material tray, 220 - Rotary drive assembly, 221 - Motor, 222 - First sprocket, 223 - Second sprocket, 224 - Conveyor chain, 230 - Clamping assembly, 231 - Clamping sleeve, 232 - Control screw sleeve, 233 - Adjusting block, 234 - First connecting rod, 235 - Second connecting rod, 236 - Coiling flange, 237 - Chute, 238 - Elastic part, 240 - Unwind shaft, 241 - Slide block;

[0029] 300 - Guide mechanism, 310 - Guide bracket, 320 - Guide seat, 321 - Adjustment groove, 330 - Guide roller set, 331 - First guide roller, 332 - Second guide roller, 333 - Bearing unit, 340 - Linear drive, 350 - Base, 351 - Caster wheel;

[0030] 400 - Tape. Detailed implementation manner

[0031] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation descriptions such as up, down, etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model.

[0033] In the description of the present utility model, "a plurality of" refers to more than two. If the first and second are described, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0034] In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0035] Refer to Figures 1 to 7As shown in the figure, the present utility model discloses an unwinding device for an LED bracket injection molding machine. The unwinding device for the LED bracket injection molding machine includes a main bracket 100 and a guiding mechanism 300. At least one unwinding mechanism 200 is arranged on the main bracket 100 in the vertical direction. The unwinding mechanism 200 can fix the material tray 210 and control the rotation of the material tray 210. In this embodiment, two unwinding mechanisms 200 are provided, one of which is for normal operation and use. When the unwinding is nearly completed, rapid switching can be achieved through the second unwinding mechanism 200. The guiding mechanism 300 is provided with a guiding bracket 310, and a guiding seat 320 is adjustably arranged on the guiding bracket 310 in the vertical direction. A guiding roller set 330 is rotatably arranged on the guiding seat 320. The main bracket 100 is provided with an unwinding mechanism 200, and a material tray 210 is detachably arranged on the unwinding mechanism 200. The unwinding mechanism 200 can control the rotation of the material tray 210, thereby realizing the unwinding of the tape 400. Specifically, in this embodiment, the tape 400 is a strip structure made of metal, and the tape 400 is wound around the material tray 210. When the distance between the main bracket 100 and the injection molding machine is relatively close, the tape 400 is prone to bending. Therefore, the main bracket 100 is arranged far away from the injection molding machine to increase the bending radius of the tape 400, thereby reducing the risk of bending. Specifically, the distance between the main bracket 100 and the injection molding machine is 3m to 8m. The guiding mechanism 300 is arranged on one side of the main bracket 100 and is located between the main bracket 100 and the injection molding machine. By arranging the guiding mechanism 300, the bending deformation of the tape 400 can be adjusted while providing support for the tape 400. The guiding mechanism 300 is provided with a guiding bracket 310, and the guiding bracket 310 is provided with a guiding seat 320. The guiding seat 320 can be adjusted up and down in the vertical direction. A guiding roller set 330 is rotatably arranged on the guiding seat 320, and the guiding roller set 330 can carry the tape 400. During the gradual unwinding of the material tray 210, the diameter of the coil formed by the winding of the tape 400 gradually becomes smaller. By controlling the change in the vertical height of the guiding seat 320, when the tape 400 enters the injection molding machine, the tape 400 can not only maintain a certain tension, but also have a smaller bending angle, which can reduce the occurrence of creases on the tape 400 and improve the yield rate.

[0036] In some embodiments of the present utility model, the guiding mechanism 300 includes a linear drive 340. One end of the linear drive 340 is hinged to the guiding seat 320, and the other end of the linear drive 340 is hinged to the guiding bracket 310. In this embodiment, the linear drive 340 can be selected as a cylinder or an electric cylinder. Through the linear drive 340, the movement of the guiding seat 320 in the vertical direction can be controlled, so as to keep the part of the tape 400 located between the main bracket 100 and the guiding mechanism 300 in a horizontal or slightly inclined state. Through the design of this structure, the automation degree is high and the working efficiency is improved.

[0037] In some embodiments of the present utility model, the guide roller set 330 includes a first guide roller 331 and a second guide roller 332; an adjustment groove 321 is provided on the guide seat 320, and the first guide roller 331 and the second guide roller 332 are respectively rotatably connected to the guide seat 320 through bearing units 333, and the bearing units 333 are adjustably installed in the adjustment groove 321 through fastening bolts. In this embodiment, the rotation connection between the first guide roller 331 and the second guide roller 332 can be realized through the bearing unit 333, avoiding large friction when the strip 400 passes through the gap between the first guide roller 331 and the second guide roller 332. In this embodiment, by providing the adjustment groove 321, the gap between the first guide roller 331 and the second guide roller 332 can be adjusted, so as to realize the conveyance of strips 400 with different thicknesses.

[0038] In some embodiments of the present utility model, both the first guide roller 331 and the second guide roller 332 are of a hollow structure. Through the design of the hollow structure, the weights of the first guide roller 331 and the second guide roller 332 can be reduced, and at the same time, costs can be saved.

[0039] In some embodiments of the present utility model, a base 350 is provided at the lower end of the guide bracket 310, and casters 351 are respectively provided at the corners of the bottom of the base 350. By providing the base 350 at the lower end of the guide bracket 310, the center of gravity of the guide bracket 310 can be lowered, thereby improving the stability of the guide bracket 310; in this embodiment, by providing the casters 351 at the lower end of the base 350, the position of the guiding mechanism 300 can be conveniently adjusted, improving the practicability of the device. Specifically, in this embodiment, the caster 351 is a universal wheel, and the caster 351 is also provided with a braking structure.

[0040] In some embodiments of the present utility model, the unwinding mechanism 200 includes a rotary drive assembly 220, a clamping assembly 230, and an unwinding shaft 240; the rotary drive assembly 220 is in transmission connection with the unwinding shaft 240 for controlling the rotation of the unwinding shaft 240; the clamping assembly 230 is provided on the unwinding shaft 240 for clamping the material tray 210. Specifically, in use, the material tray 210 is placed on the unwinding shaft 240, and the material tray 210 is fixed by the clamping assembly 230. Further, the rotation of the unwinding shaft 240 is controlled by the rotary drive assembly 220, so as to realize automatic unwinding control.

[0041] In some embodiments of the present utility model, the rotary drive assembly 220 includes a motor 221, a first sprocket 222, a second sprocket 223, and a conveyor chain 224. The output end of the motor 221 is fixedly connected to the first sprocket 222. The first sprocket 222 is drivingly connected to the second sprocket 223 through the conveyor chain 224. The second sprocket 223 is fixedly connected to the unwinding shaft 240. The unwinding shaft 240 is rotatably arranged on the main bracket 100. In this embodiment, the chain drive has the advantages of a relatively accurate transmission ratio, high-efficiency and stable performance, strong power transmission ability, and excellent environmental adaptability. It is not only structurally compact, has a small tension, but also has high cost-effectiveness, and is particularly suitable for power transmission under heavy load conditions.

[0042] In some embodiments of the present utility model, the clamping assembly 230 includes a clamping sleeve 231, a control screw sleeve 232, an adjusting block 233, a first connecting rod 234, a second connecting rod 235, and a coiling flange 236. The coiling flange 236 is sleeved on the unwinding shaft 240. The clamping sleeve 231 is axially sleeved on the unwinding shaft 240. The control screw sleeve 232 is threadedly connected to the unwinding shaft 240, and one end of the control screw sleeve 232 abuts against the clamping sleeve 231. A plurality of adjusting blocks 233 are provided, and the plurality of adjusting blocks 233 are evenly distributed along the circumferential direction of the clamping sleeve 231. One end of the adjusting block 233 is slidably arranged on the coiling flange 236. One end of the first connecting rod 234 is rotatably connected to the adjusting block 233, and the other end of the first connecting rod 234 is rotatably connected to the clamping sleeve 231. One end of the second connecting rod 235 is rotatably connected to the adjusting block 233, and the other end of the second connecting rod 235 is rotatably connected to the clamping sleeve 231. The first connecting rod 234 is parallel to the second connecting rod 235. Specifically, in this embodiment, the adjusting block 233, the clamping sleeve 231, the first connecting rod 234, and the second connecting rod 235 together form a parallelogram linkage structure. There are 3 adjusting blocks 233 evenly distributed along the circumferential direction of the clamping sleeve 231. One end of the adjusting block 233 is slidably connected to the coiling flange 236. When the clamping sleeve 231 slides axially on the unwinding shaft 240, the outer end of the adjusting block 233 can abut against the inner side wall of the central hole of the material tray 210, thereby fixing the material tray 210. In this embodiment, the control screw sleeve 232 is threadedly connected to the unwinding shaft 240, and one end of the control screw sleeve 232 abuts against the clamping sleeve 231. By controlling the rotation of the control screw sleeve 232, the clamping sleeve 231 can be slid axially on the unwinding shaft 240.

[0043] In some embodiments of the present utility model, a chute 237 extending axially is provided on the inner peripheral wall of the clamping sleeve 231, and a slider 241 is provided on the pay-off reel 240 corresponding to the chute 237. In this embodiment, the design of the chute 237 and the slider 241 forms a spline structure, not only enabling the clamping sleeve 231 and the pay-off reel 240 to rotate synchronously, but also enabling the clamping sleeve 231 to slide axially on the pay-off reel 240. Through the design of this structure, a relatively large load can be borne.

[0044] In some embodiments of the present utility model, an arc-shaped elastic portion 238 is provided on the side of the adjusting block 233 away from the control nut 232. Three adjusting blocks 233 are evenly distributed circumferentially on the clamping sleeve 231. One end of the adjusting block 233 is slidably connected to the winding flange 236. When the clamping sleeve 231 slides axially on the pay-off reel 240, the outer end of the adjusting block 233 can abut against the inner side wall of the central hole of the material tray 210, thereby fixing the material tray 210. By providing the arc-shaped elastic portion 238 on the adjusting block 233, the contact area between the adjusting hole and the material tray 210 can be increased, thereby increasing the frictional force and preventing the material tray 210 from rotating relative to the adjusting block 233. In this embodiment, the elastic portion 238 is fixed to the adjusting block 233 by means of adhesion. Through the design of this structure, it is convenient to replace the elastic portion 238. In this embodiment, the radian of the arc surface of the elastic portion 238 is the same as that of the central hole of the material tray 210.

[0045] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art to which it pertains, various changes can be made without departing from the gist of the present utility model.

Claims

1. An unwinding device for an LED bracket injection molding machine, characterized in that: include: A main support (100), wherein at least one unwinding mechanism (200) is disposed on the main support (100) in a vertical direction, and the unwinding mechanism (200) is capable of fixing a material tray (210) and controlling the material tray (210) to rotate; A guide mechanism (300) is provided with a guide bracket (310), a guide seat (320) is adjustably provided on the guide bracket (310) in a vertical direction, and a guide roller group (330) is rotatably provided on the guide seat (320).

2. The unwinding device of the LED bracket injection molding machine according to claim 1, characterized in that: The guide mechanism (300) comprises a linear drive (340), one end of the linear drive (340) is hinged to the guide seat (320), and the other end of the linear drive (340) is hinged to the guide bracket (310).

3. The unwinding device of the LED bracket injection molding machine according to claim 2, characterized in that: The guide roller group (330) comprises a first guide roller (331) and a second guide roller (332); an adjustment groove (321) is provided on the guide seat (320); the first guide roller (331) and the second guide roller (332) are rotatably connected to the guide seat (320) via a bearing unit (333), respectively; the bearing unit (333) is adjustably installed in the adjustment groove (321) via a fastening bolt.

4. The unwinding device of the LED bracket injection molding machine according to claim 3, characterized in that: The first guide roller (331) and the second guide roller (332) are both hollow structures.

5. The unwinding device of the LED bracket injection molding machine according to any one of claims 1 to 4, characterized in that: A base (350) is provided at the lower end of the guide bracket (310), and casters (351) are respectively provided at the corners of the bottom of the base (350).

6. The unwinding device of the LED bracket injection molding machine according to claim 1, characterized in that: The unwinding mechanism (200) comprises a rotary drive assembly (220), a clamping assembly (230) and an unwinding shaft (240); the rotary drive assembly (220) and the unwinding shaft (240) are transmission-connected to control the rotation of the unwinding shaft (240); the clamping assembly (230) is arranged on the unwinding shaft (240) to clamp the material tray (210).

7. The unwinding device of the LED bracket injection molding machine according to claim 6, characterized in that: The rotary drive assembly (220) comprises a motor (221), a first sprocket (222), a second sprocket (223) and a conveying chain (224); the output end of the motor (221) is fixedly connected to the first sprocket (222); the first sprocket (222) is transmission-connected to the second sprocket (223) via the conveying chain (224); the second sprocket (223) is fixedly connected to the unwinding shaft (240); and the unwinding shaft (240) is rotatably arranged on the main support (100).

8. The unwinding device of the LED bracket injection molding machine according to claim 6, characterized in that: The clamping assembly (230) comprises a clamping sleeve (231), a control screw sleeve (232), an adjusting block (233), a first connecting rod (234), a second connecting rod (235) and a coiling flange (236); the coiling flange (236) is sleeved on the unwinding shaft (240); the clamping sleeve (231) is sleeved on the unwinding shaft (240) along the axial direction; the control screw sleeve (232) and the unwinding shaft (240) are threadedly connected; one end of the control screw sleeve (232) abuts against the clamping sleeve (231); the adjusting block (233) is provided with a plurality of adjusting blocks ( 233) are evenly distributed along the circumference of the clamping sleeve (231); one end of the adjusting block (233) is slidably set on the coil flange (236); one end of the first connecting rod (234) is rotatably connected to the adjusting block (233), and the other end of the first connecting rod (234) is rotatably connected to the clamping sleeve (231); one end of the second connecting rod (235) is rotatably connected to the adjusting block (233), and the other end of the second connecting rod (235) is rotatably connected to the clamping sleeve (231); the first connecting rod (234) is parallel to the second connecting rod (235).

9. The unwinding device of the LED bracket injection molding machine according to claim 8, characterized in that: The inner peripheral wall of the clamping sleeve (231) is provided with a sliding groove (237) extending in the axial direction, and the unwinding shaft (240) is provided with a sliding block (241) corresponding to the sliding groove (237).

10. The unwinding device of the LED bracket injection molding machine according to claim 8, characterized in that: An arc-shaped elastic portion (238) is provided on a side of the adjustment block (233) away from the control screw sleeve (232).

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