Heat shrink tube conveying device

Abstract

The present invention provides a heat shrink tube conveying device, which belongs to the field of mechanical technology. It solves the problem that the existing machinery cannot meet the assembly of longer length heat shrink tubes. The heat shrink tube conveying device includes a tube delivery mechanism and a sleeve transfer mechanism. The tube delivery mechanism is located on the side of the sleeve transfer mechanism, and the tube delivery mechanism is used to deliver the heat shrink tube to the sleeve transfer mechanism. The sleeve transfer mechanism includes a fixed frame, a rack, a sleeve feed fixed seat, a push tube, a rotating rod and a cylinder. The rack is slidably inserted in the fixed frame, and the rack is connected with a driving structure for driving the rack to slide relative to the fixed frame. The rotating rod is provided with a gear meshed with a tooth groove. The sleeve feed fixed seat is fixedly connected to the rotating rod. The push tube is driven by the cylinder to slide on the sleeve feed fixed seat, and the push tube has a sleeve port for matching with the tube delivery mechanism. It can reduce the occupied space of the entire device, and can adapt to the requirements of feeding heat shrink tubes of different lengths, and has a wider applicability.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a heat shrink tube conveying device. Background Art

[0002] When welding existing electronic devices such as LED bulbs or resistors, since the two feet are exposed in a large area, in order to prevent leakage, it is usually necessary to cover the feet of the LED bulb with insulating materials. The commonly used insulating material is heat shrink tubing. Heat shrink tubing is a special polyolefin heat shrink tubing, and can also be made of EVA. It has high-temperature shrinkage, soft flame retardancy, insulation and corrosion resistance, and is widely used in insulation protection of various wiring harnesses, solder joints, and inductors. The heat shrink tubing will shrink after being heated and be mounted on the energized object. Due to size limitations, existing welding machines can often only deliver short heat shrink tubing. Moreover, when delivering long heat shrink tubing, the existing welding machines will bend and collapse due to the softness of the heat shrink tubing itself, resulting in inaccurate delivery position and poor applicability. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems in the prior art and to propose a heat shrink tube conveying device, which aims to solve the technical problem of how to convey a relatively long heat shrink tube.

[0004] The objectives of the present invention can be achieved through the following technical solutions: a heat shrink tube delivery device, characterized in that it includes a tube delivery mechanism and a sleeve transfer mechanism, the tube delivery mechanism is located on the side of the sleeve transfer mechanism, and the tube delivery mechanism is used to deliver the heat shrink tube to the sleeve transfer mechanism, the sleeve transfer mechanism includes a fixed frame, a rack, a sleeve feed fixing seat, a push tube, a rotating rod and a cylinder, the rack is slidably inserted in the fixed frame, and the rack is connected to a driving structure for driving the rack to slide relative to the fixed frame, the rotating rod is provided with a gear meshing with the tooth groove, the sleeve feed fixing seat is fixedly connected to the rotating rod, the push tube is driven by the cylinder to slide on the sleeve feed fixing seat, and the push tube has a sleeve opening for matching with the tube delivery mechanism.

[0005] The heat shrink tube conveying device is arranged on the side of the welding table of the welding machine. The tube conveying mechanism conveys the heat shrink tube to the sleeve opening of the push tube. The tooth groove of the rack is located in the length direction of the rack. When the gear moves relative to the fixed frame, the tooth groove in the middle of the rack drives the rotating rod, the sleeve fixing seat and the push tube to rotate together through the gear meshing, so that the sleeve opening of the push tube rotates from facing the tube conveying mechanism to facing the workbench. The cylinder drives the push tube to move toward the workbench and allows the heat shrink tube to be sleeved on the pins of the electronic components.

[0006] In the above heat shrink tube conveying device, the fixed frame includes a bottom frame and a cover plate, the bottom frame has a groove for accommodating a rack, the bottom of the groove is embedded with a first bearing, the cover plate covers the bottom frame and the rack, and the cover plate is fixed to the bottom frame by a fastener, the cover plate is embedded with a second bearing, the rotating rod is sequentially inserted through the second bearing and the first bearing from top to bottom, and the gear is located between the first bearing and the second bearing. The fastener is a bolt, a screw or a positioning pin.

[0007] In the above-mentioned heat shrink tube delivery device, the front end of the inlet tube fixing seat is provided with an upwardly protruding limit seat, the push tube is located above the plate body of the inlet tube fixing seat, and the push tube slides and inserts on the limit seat, and the front end of the fixed frame is provided with a limit block, the limit block has a vertically arranged limit plate, a recessed head screw is vertically inserted on the limit plate, and a buffer sleeve is provided at the end of the recessed head screw. The limit seat limits the travel of the push tube to prevent the push tube from deflecting when moving forward and backward, and ensures the accuracy of the heat shrink tube when it is installed; when the inlet tube fixing seat is rotated into place, the side of the limit seat abuts against the buffer sleeve, and the buffer sleeve limits and buffers the limit seat to avoid damage to the mechanism.

[0008] In the above heat shrink tube conveying device, the cylinder is located above the push tube, so as to avoid the cylinder from being damaged by contacting the limit plate when the sleeve fixing seat rotates.

[0009] In the above heat shrink tube conveying device, the driving structure includes a screw and a driving motor, the screw is connected to the motor shaft of the driving motor, the rack is spirally connected to the screw, and the axial direction of the screw is consistent with the length direction of the rack. The driving motor drives the screw to rotate, so that the rack moves along the axial direction of the screw.

[0010] In the above-mentioned heat shrink tube conveying device, a sliding seat is arranged on the inlet sleeve fixing seat, the front end of the push tube slides and penetrates into the sliding seat, and the rear end of the push tube is connected to the piston rod of the cylinder through a connecting block.

[0011] In the above-mentioned heat shrink tube conveying device, a cylinder fixing frame is fixed on the inlet sleeve fixing seat, the cylinder is vertically fixed on the cylinder fixing frame, and the cylinder fixing frame has an opening for allowing the push tube and the connecting block to move back and forth.

[0012] In the above-mentioned heat shrink tube conveying device, the sleeve opening is a blind hole.

[0013] In the above-mentioned heat shrink tube conveying device, the connecting block includes rod block 1, rod block 2 and rod block 3. Rod block 1 is vertically connected to the front end of rod block 2, and rod block 1 is fixedly connected to the piston rod of the cylinder. Rod block 3 is vertically connected to the rear end of rod block 2, and rod block 3 is fixedly connected to the rear end of the push tube. The rear end of the push tube is also connected with a counterweight block, and the counterweight block is located at the rear side of the connection between rod block 3 and the push tube. The counterweight block is used to further ensure that the push tube will not deviate when moving. The above-mentioned setting of the connecting block can not only ensure the pushing stroke of the push tube, but also reduce the space occupied by the cylinder and the push tube in the sleeve transfer mechanism, so that the entire structure is smaller.

[0014] In the above heat shrink tube conveying device, the tube transfer mechanism further includes a slide rail and a slider, the slider is slidably connected to the slide rail, and the fixed frame is fixedly connected to the slider. The slider is connected to a driving member for driving the slider to slide on the slide rail. When the slider moves, it drives the fixed frame, the tube feed fixing seat and the push tube to move together, thereby adjusting the initial position of the push tube, that is, adjusting the distance between the push tube and the tube delivery mechanism, so that heat shrink tubes of different lengths can be used. At the same time, the sliding of the slider can further reduce the occupied space of the tube transfer mechanism.

[0015] In the above-mentioned heat shrink tube conveying device, the tube conveying mechanism includes a fixed plate, a lower pressure wheel, an upper pressure wheel, a pressure wheel motor, a guide tube, a fixed block, a movable cutter and a cutter motor. The fixed plate is vertically arranged, the pressure wheel motor is fixedly connected to the fixed plate, and the motor shaft vertically penetrates the fixed plate, the lower pressure wheel is connected to the motor shaft, the upper pressure wheel is located above the lower pressure wheel, the guide tube and the fixed block are both fixedly connected to the fixed plate, and the guide tube is located at the front side of the upper pressure wheel and the lower pressure wheel, the fixed block is located at the rear side of the upper pressure wheel and the lower pressure wheel, the fixed block has a through hole for the heat shrink tube to pass through, the cutter motor is fixedly connected to the fixed plate, and the cutter motor drives the movable cutter to rise and fall relative to the fixed block through the transmission structure and cuts off the heat shrink tube.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The heat shrink tube conveying device can reduce the occupied space of the whole device through the rotating tube pushing structure, and the structure is compact;

[0018] 2. The heat shrink tube conveying device can adapt to the feeding requirements of heat shrink tubes of different lengths through the slider and the slide rail structure, and has wider applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the light bulb welding machine of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 It is a side view of the present invention.

[0022] Figure 4 It is a top view of the present invention.

[0023] Figure 5 It is a cross-sectional view of the sleeve transfer mechanism in the present invention.

[0024] Figure 6 It is a top view of the connection structure of the rack, the rotating rod and the fixed frame in the present invention.

[0025] In the figure, 1, fixed frame; 101, bottom frame; 102, cover plate; 103, groove; 2, rack; 201, tooth groove; 3, sleeve fixing seat; 301, limit seat; 4, push tube; 401, sleeve opening; 5, rotating rod; 501, gear; 6, cylinder; 7, bearing 1; 8, bearing 2; 9, limit block; 901, limit plate; 10, socket head screw; 11, buffer sleeve; 12, screw rod; 13, drive motor; 14, cylinder fixing frame; 1401, opening; 15, connecting block; 1501, Rod block one; 1502, rod block two; 1503, rod block three; 16, counterweight block; 17, slide rail; 18, slider; 19, fixed plate; 20, lower pressure wheel; 21, upper pressure wheel; 22, pressure wheel motor; 23, guide tube; 24, fixed block; 2401, through hole; 25, movable cutter; 26, cutter motor; 27, bubble clamping table; 28, clamp assembly; 29, auxiliary clamp; 30, heat shrink tube disc fixing frame; 31, working panel; 32, pressure rod; 33, connecting rod structure; 34, linkage block; 35, through slot. DETAILED DESCRIPTION

[0026] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0027] Reference Figure 1 The present embodiment is a heat shrink tube conveying device used in an LED bulb welding machine. The LED bulb welding machine also includes a working panel 31, a bubble clamping table 27, a clamp assembly 28, an auxiliary clamp 29 and a heat shrink tube disc fixing frame 30. The bubble clamping table 27 is disc-shaped and is located at the center of the working panel 31. The clamp assembly 28 is evenly spaced along the peripheral edge of the bubble clamping table 27. The heat shrink tube conveying device is located at the periphery of the bubble clamping table 27. The auxiliary clamp 29 is located between the bubble clamping table and the heat shrink tube conveying device, and is used to clamp the heat sleeve for auxiliary positioning. The heat shrink tube disc fixing frame 30 is located on the outside of the heat shrink tube conveying device to release the heat shrink tube.

[0028] Combination Figure 2-Figure 6The heat shrink tube conveying device includes a tube conveying mechanism and a sleeve transfer mechanism. The tube conveying mechanism is located on the outside of the sleeve transfer mechanism, and is used to convey the heat shrink tube to the sleeve transfer mechanism. The tube conveying mechanism includes a fixed plate 19, a lower pressure wheel 20, an upper pressure wheel 21, a pressure wheel motor 22, a guide tube 23, a fixed block 24, a movable cutter 25, a cutter motor 26 and a pressure rod 32. The fixed plate 19 is vertically arranged on the working panel 31, the pressure wheel motor 22 is fixedly connected to the fixed plate 19, and the motor shaft vertically penetrates the fixed plate 19. The lower pressure wheel 20 is connected to the motor shaft of the pressure wheel motor 22 and is driven to rotate by the pressure wheel motor 22. The upper pressure wheel 21 is located above the lower pressure wheel 20, and the wheel surfaces of the lower pressure wheel 20 and the upper pressure wheel 21 are both provided with grooves. The pressure rod 32 is hinged on the fixed plate by a torsion spring, the upper pressure wheel 21 is connected to the rear end of the pressure rod 32, and the front end of the pressure rod 32 has an operating handle. The upper pressure wheel 21 can automatically adjust the spacing with the lower pressure wheel 20 to meet the delivery needs of heat shrink tubes of different sizes. The guide tube 23 and the fixed block 24 are both fixedly connected to the fixed plate 19, and the guide tube 23 is located at the front side of the upper pressure wheel 21 and the lower pressure wheel 20, which is used to receive the heat shrink tube and transfer it between the lower pressure wheel 20 and the upper pressure wheel 21, the fixed block 24 is located at the rear side of the upper pressure wheel 21 and the lower pressure wheel 20, and the fixed block 24 has a through hole 2401 for the heat shrink tube to pass through, and the cutter motor 26 is fixedly connected to the fixed plate 19, and the blade surface of the movable cutter 25 is attached to the rear end surface of the fixed block 24, and the cutter motor 26 drives the movable cutter 25 to rise and fall relative to the fixed block 24 through the screw nut structure and cuts the heat shrink tube.

[0029] The casing transfer mechanism includes a fixed frame 1, a rack 2, a linkage block 34, a casing feed fixed seat 193, a push tube 4, a rotating rod 5, a cylinder 6, a slide rail 17 and a slider 18. The slide rail 17 is fixedly connected to the working panel 31. The slider 18 is driven by a connecting rod structure 33 and slidably connected to the slide rail 17. The fixed frame 1 is fixedly connected to the slider 18. The linkage block 34 is fixedly connected to the rack 2, and the linkage block 34 abuts against the side surface of the rack 2 having the tooth groove 201. 2 and the linkage block 34 are slidably inserted into the fixed frame 1, and a vertical through groove 35 is provided between the rack 2 and the linkage block 34. The linkage block 34 is connected with a driving structure for driving the rack 2 to slide relative to the fixed frame 1. The driving structure in this embodiment includes a screw rod 12 and a driving motor 13. The screw rod 12 is connected to the motor shaft of the driving motor 13. The linkage block 34 is spirally connected to the screw rod 12. The axial direction of the screw rod 12 is consistent with the length direction of the rack 2. The rotating rod 5 is vertically inserted into the through groove 35, and a gear 501 meshing with the tooth groove 201 of the rack 2 is provided in the middle of the rotating rod 5, the sleeve fixing seat 193 is fixedly connected to the rotating rod 5, and the push tube 4 is driven by the cylinder 6 to slide on the sleeve fixing seat 193, and the push tube 4 has a sleeve opening 401 for matching with the tube feeding mechanism, and the sleeve opening 401 is a blind hole. When the push tube 4 pushes the heat shrink tube, the end of the heat shrink tube abuts against the bottom end of the sleeve opening 401 and is pushed by the push tube 4. The diameter and depth of the sleeve opening 401 of the push tube 4 are selected according to the heat shrink tubes of different lengths and sizes.

[0030] The fixed frame 1 includes a bottom frame 101 and a cover plate 102. The bottom frame 101 has a groove 103 for accommodating the rack 2. A bearing 7 is embedded in the bottom of the groove 103. The cover plate 102 covers the bottom frame 101 and the rack 2, and is fixed to the bottom frame 101 by fasteners. The cover plate 102 is embedded with a bearing 2 8. The rotating rod 5 is inserted into the bearing 2 8 and the bearing 1 7 from top to bottom in sequence. The gear 501 is located between the bearing 1 7 and the bearing 2 8.

[0031] A limit seat 301 protruding upward is provided at the front end of the sleeve fixing seat 193, the push tube 4 is located above the plate body of the sleeve fixing seat 193, and the push tube 4 slides and inserts on the limit seat 301, and a limit block 9 is provided at the front end of the fixing frame 1. The limit block 9 has a vertically arranged limit plate 901, and a recessed head screw 10 is vertically inserted on the limit plate 901, and a buffer sleeve 11 is provided at the end of the recessed head screw 10.

[0032] The cylinder 6 is located above the push tube 4 to prevent the cylinder 6 from being damaged by contacting the limit plate 901 when the sleeve fixing seat 193 rotates. Further, in this embodiment, the cylinder 6 is located obliquely above the push tube 4, which can ensure the movement stroke of the cylinder 6 and reduce the height of the entire device.

[0033] The rear end of the push tube 4 is connected to the piston rod of the cylinder 6 through the connecting block 15. The cylinder fixing frame 14 is fixed on the sleeve fixing seat 193. The cylinder 6 is vertically fixed on the cylinder fixing frame 14. The cylinder fixing frame 14 has an opening 1401 for the push tube 4 and the connecting block 15 to move back and forth. The connecting block 15 includes a rod block 1501, a rod block 2 1502 and a rod block 3 1503. The rod block 1501 is vertically connected to the front end of the rod block 2 1502, and the rod block 1501 is fixedly connected to the piston rod of the cylinder 6. The rod block 3 1503 is vertically connected to the rear end of the rod block 2 1502, and the rod block 3 1503 is fixedly connected to the rear end of the push tube 4. The rear end of the push tube 4 is also connected with a counterweight block 16, which is located at the rear side of the connection between the rod block 3 1503 and the push tube 4 to ensure that the push tube 4 does not deviate when moving, and to ensure the accuracy when delivering the heat shrink tube.

[0034] The working principle of this embodiment is as follows:

[0035] The heat shrink tube on the heat shrink tube disc fixing frame 30 is sent to the push tube 4 of the sleeve transfer mechanism through the tube delivery mechanism and cut off. The sleeve delivery fixing seat 3 of the sleeve transfer mechanism rotates so that the sleeve opening 401 of the push tube 4 faces the bubble clamping platform 27. At this time, the clamp assembly 28 holding the LED bulb on the bubble clamping platform 27 rotates to the sleeve station. The push tube 4 is sleeved on the bubble foot of the LED bulb under the action of the cylinder 6. The auxiliary clamp 29 can further adjust the position of the heat shrink tube after the heat shrink tube is sleeved. When the heat shrink tube is long, the fixed frame 1 moves forward and backward with the slider 18, thereby adjusting the initial position of the push tube 4, that is, when the push tube 4 receives the heat shrink tube, the slider 18 can move backward to increase the distance between the bottom end of the push tube 4 and the tube delivery mechanism. When the push tube 4 rotates, the slider 18 can move forward to increase the distance between the bottom end of the push tube 4 and the bubble clamping platform 27.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A heat shrink tube conveying device, characterized in that: The invention comprises a tube delivery mechanism and a sleeve transfer mechanism, wherein the tube delivery mechanism is located outside the sleeve transfer mechanism and is used to deliver a heat shrink tube to the sleeve transfer mechanism, wherein the sleeve transfer mechanism comprises a fixed frame (1), a rack (2), a sleeve feed fixed seat (3), a tube pusher (4), a rotating rod (5) and a cylinder (6), wherein the rack (2) is slidably inserted into the fixed frame (1), and the rack (2) is connected to a driving structure for driving the rack (2) to slide relative to the fixed frame (1), and the rotating rod (5) is provided with a gear (502) meshing with a tooth groove (202) of the rack (2). 1), the casing inlet fixing seat (3) is fixedly connected to the rotating rod (5), the pushing tube (4) is slidably connected to the casing inlet fixing seat (3) by the cylinder (6), and the pushing tube (4) has a casing opening (401) adapted to the tube delivery mechanism, the casing delivery mechanism further comprises a slide rail (17) and a slider (18), the slider (18) is slidably connected to the slide rail (17), the fixing frame (1) is fixedly connected to the slider (18), and when the slider (18) moves, it drives the fixing frame (1), the casing inlet fixing seat (3) and the pushing tube (4) to move together, thereby The distance between the tube (4) and the tube feeding mechanism can be adjusted, and heat shrink tubes of different lengths can be used. The tube feeding mechanism comprises a fixed plate (19), a lower pressing wheel (20), an upper pressing wheel (21), a pressing wheel motor (22), a guide tube (23), a fixed block (24), a movable cutter (25) and a cutter motor (26). The fixed plate (19) is vertically arranged, the pressing wheel motor (22) is fixedly connected to the fixed plate (19), and the motor shaft vertically penetrates the fixed plate (19), the lower pressing wheel (20) is connected to the motor shaft, and the upper pressing wheel (21) is located at the lower pressing wheel (20). The guide tube (23) and the fixed block (24) are both fixedly connected to the fixed plate (19), and the guide tube (23) is located at the front side of the upper pressing wheel (21) and the lower pressing wheel (20), and the fixed block (24) is located at the rear side of the upper pressing wheel (21) and the lower pressing wheel (20), and the fixed block (24) has a through hole (2401) for allowing the heat shrink tube to pass through, and the cutter motor (26) is fixedly connected to the fixed plate (19), and the cutter motor (26) drives the movable cutter (25) to move up and down relative to the fixed block (24) through the transmission structure to cut the heat shrink tube.

2. The heat shrink tube conveying device according to claim 1, characterized in that: The fixed frame (1) comprises a bottom frame (101) and a cover plate (102); the bottom frame (101) has a groove (103) for accommodating the rack (2); a bearing 1 (7) is embedded in the bottom of the groove (103); the cover plate (102) covers the bottom frame (101) and the rack (2), and the cover plate (102) is fixed to the bottom frame (101) by a fastener; the cover plate (102) is embedded with a bearing 2 (8); the rotating rod (5) is inserted through the bearing 2 (8) and the bearing 1 (7) in sequence from top to bottom; and the gear (501) is located between the bearing 1 (7) and the bearing 2 (8).

3. The heat shrink tube conveying device according to claim 1, characterized in that: The front end of the sleeve-entry fixing seat (3) is provided with a limit seat (301) protruding upwards, the push tube (4) is located above the plate body of the sleeve-entry fixing seat (3), and the push tube (4) is slidably inserted on the limit seat (301), and the front end of the fixing frame (1) is provided with a limit block (9), the limit block (9) has a vertically arranged limit plate (901), a recessed head screw (10) is vertically inserted on the limit plate (901), and a buffer sleeve (11) is provided at the end of the recessed head screw (10).

4. The heat shrink tube conveying device according to claim 3, characterized in that: The cylinder (6) is located above the push tube (4).

5. The heat shrink tube conveying device according to claim 1, characterized in that: The driving structure comprises a screw rod (12) and a driving motor (13); the screw rod (12) is connected to a motor shaft of the driving motor (13); the rack (2) is spirally connected to the screw rod (12); and the axial direction of the screw rod (12) is consistent with the length direction of the rack (2).

6. The heat shrink tube conveying device according to claim 1, characterized in that: The rear end of the push tube (4) is connected to the piston rod of the cylinder (6) via a connecting block (15); a cylinder fixing frame (14) is fixedly provided on the sleeve fixing seat (3); the cylinder (6) is vertically fixedly connected to the cylinder fixing frame (14); and the cylinder fixing frame (14) has an opening (1401) for allowing the push tube (4) and the connecting block (15) to move back and forth.

7. The heat shrink tube delivery device according to claim 6, characterized in that: The connecting block (15) comprises a rod block one (1501), a rod block two (1502) and a rod block three (1503); the rod block one (1501) is vertically connected to the front end of the rod block two (1502), and the rod block one (1501) is fixedly connected to the piston rod of the cylinder (6); the rod block three (1503) is vertically connected to the rear end of the rod block two (1502), and the rod block three (1503) is fixedly connected to the rear end of the push tube (4); the rear end of the push tube (4) is also connected to a counterweight block (16), and the counterweight block (16) is located at the rear side of the connection between the rod block three (1503) and the push tube (4).

8. The heat shrink tube conveying device according to claim 1, characterized in that: The sleeve opening (401) is a blind hole.

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