Encapsulation of metal joint of double-ground wire

Abstract

The application relates to a metal joint sealing device for double-head grounding wires, which comprises a pipe winding disc, a pipe feeding mechanism, a pipe cutting mechanism, a rotating disc, a guide mechanism, a positioning block, a sealing block, a hot air blowing mechanism and a workbench; a plurality of work stations are evenly arranged on the rotating disc; each work station comprises two axial through holes, and the outer sides of the two axial through holes are respectively provided with a first slot; the sealing block is provided with two sealing channels on the top, and the upper ends of the two sealing channels are respectively provided with a second slot. The device has the advantages of ingenious design, reasonable and perfect structure, feeding, cutting and safe heating and sealing, time and labor saving, safety and reliability; the first slot and the second slot are designed to ensure that hot air enters the sealing channel and the axial through hole during hot air blowing, and to solve the problem that once the heat shrink tube is not normally sleeved on the double-head grounding wire, the heat shrink tube is bonded or stuck in the sealing channel or the axial through hole after being heated, and the first slot and the second slot can remove the waste heat shrink tube.

Description

Technical Field

[0001] This invention relates to the field of double-ended grounding wire processing, and more specifically to a sealing device for the metal connector of a double-ended grounding wire. Background Technology

[0002] The metal connectors at both ends of a double-ended grounding wire need to be insulated at the connection point with the middle conductor. Currently, heat shrink tubing is a common method for this. Heat shrink tubing is a specially made polyolefin heat shrink sleeve. The outer layer is made of high-quality, soft cross-linked polyolefin material, and the inner layer is made of hot melt adhesive. The outer layer has insulation, corrosion resistance, and wear resistance, while the inner layer has advantages such as low melting point, waterproof sealing, and high adhesion. However, manually cutting the heat shrink tubing to the required length, then manually fitting it to both ends of the double-ended grounding wire, and finally heating and shrinking it is cumbersome, and both the cutting and heating processes pose safety hazards. Currently, heat shrink tubing auxiliary sealing equipment has also appeared on the market, but it has problems such as material jamming. For example, the patent title: "An Automatic Heat Shrink Tubing Insertion and Drying Machine," application number 201620156225.0, is insufficiently disclosed. It is unclear how the soft heat shrink tubing is fed, how it is cut, how it is automatically inserted, and how it is heated. The related drawings also fail to provide sufficient information. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a metal connector encapsulation device for a double-ended grounding wire. This device is rationally designed and compactly structured, assisting operators in feeding, cutting, and safely heating and encapsulating materials, saving time and effort while ensuring safety and reliability.

[0004] The technical solution of the present invention:

[0005] A sealing device for the metal connector of a double-ended grounding wire includes a reel, a tube feeding mechanism, a tube cutting mechanism, a turntable, a guide mechanism, a positioning block, a sealing block, a hot air blowing mechanism, and a worktable. A vertical plate is mounted on the worktable near its front side. A turntable is rotatably mounted on the front side of the vertical plate. A drive motor is mounted on the rear side of the vertical plate, with its front end driving the turntable. A tube feeding mechanism is mounted on the left side of the vertical plate, with a reel mounted on the worktable behind it. A tube cutting mechanism is also designed in front of the tube feeding mechanism. A hot air blowing mechanism is mounted on the right side of the vertical plate. A guide mechanism is designed on the upper front side of the turntable. The turntable has several stations evenly spaced around its circumference. Each station includes two axial through holes arranged side-by-side on the turntable. At the edge, a first groove is designed on the outer side of each of the two axial through holes. The inner side of the first groove connects to the through hole, and the outer side of the first groove connects to the outer circumference of the turntable. A positioning block is installed on the upper end of the vertical plate, located behind the turntable. An encapsulation block is also installed on the upper end of the vertical plate, located between the positioning block and the turntable, with a certain gap between the encapsulation block and the positioning block. Two encapsulation channels are also designed on the encapsulation block corresponding to the two axial through holes of the workstation. A second groove is designed on the upper end of each of the two encapsulation channels, connecting the encapsulation channel to the upper end of the encapsulation block. The hot air blowing mechanism includes an air blowing pipe located above the encapsulation block. A sensing probe is designed and installed on the upper end of the positioning block corresponding to the encapsulation channel.

[0006] The tube feeding mechanism includes a front guide block, a rear guide block, a driving wheel, a driven wheel, a tube feeding motor, and a compression cylinder. The front guide block is installed on one side of the vertical plate, and the rear guide block is installed behind the front guide block. The driving wheel and the driven wheel are installed between the front and rear guide blocks. The driving wheel is rotatably mounted on the vertical worktable. The tube feeding motor is installed below the worktable, and the driving end of the tube feeding motor passes through the worktable and drives the lower end of the driving wheel. The compression cylinder is installed on one side of the driving wheel, and a rotatable driven wheel is installed at the front end of the compression cylinder. The compression cylinder drives the driven wheel to squeeze and move closer to the driving wheel for cooperation. Two thermoplastic tube guide channels are designed in the middle of the front and rear guide blocks, arranged vertically. The thermoplastic tube guide channels of the front and rear guide blocks are located before and after the gap between the driven wheel and the driving wheel after they squeeze and move closer. The thermoplastic tube guide channels are designed as cross-shaped channels.

[0007] The pipe cutting mechanism includes a pipe cutting cylinder, a left cutter, and a right cutter. The right cutter is fixed in the middle of the left side of the vertical plate. The right cutter is located in front of the pipe feeding mechanism and behind the left side of the turntable. The pipe cutting cylinder is installed to the left of the right cutter, and the left cutter is driven to be installed at the front end of the pipe cutting cylinder. The cutting cylinder drives the left cutter to move left and right to cooperate with the right cutter in cutting.

[0008] The guiding mechanism includes a finger cylinder, an upper clamping block, and a lower clamping block. The finger cylinder is mounted on the worktable via a bracket. The upper clamping block is installed at the upper finger position of the finger cylinder, and the lower clamping block is installed at the lower finger position of the finger cylinder. The lower end of the upper clamping block is designed with two semi-conical grooves, and the upper end of the lower clamping block is designed with two semi-conical grooves. The two semi-conical grooves of the upper clamping block and the two semi-conical grooves of the lower clamping block form two guide grooves. The guide grooves are located in front of the two axial through holes at the uppermost position of the turntable.

[0009] The hot air blowing mechanism also includes a support, a slide rail, a slider, and a front and rear moving cylinder. The front and rear moving cylinder is installed on the right side of the drive motor. A slide rail is installed on the front side of the front and rear moving cylinder. The slider is slidably installed on the slide rail. The rear end of the slider is connected to the front end of the front and rear moving cylinder. A support is installed on the slider. One end of the air blowing pipe is fixedly connected to the upper end of the support. The lower end of the air blowing pipe has two air holes or air grooves. The two air holes or air grooves are respectively aligned with the second strip groove above the two encapsulation channels.

[0010] The encapsulation device at the metal connector of the double-headed grounding wire also includes a pusher mechanism, which includes a pusher cylinder and an arc-shaped pusher. The pusher cylinder is installed on the upper left side of the vertical plate, and an arc-shaped pusher is installed at the front end of the pusher cylinder. The front end of the arc-shaped pusher blocks the rear side of the two axial through holes in one station.

[0011] The advantages of this invention are its ingenious design and reasonable and perfect structure, which can assist operators in feeding, cutting and safely heating and sealing, saving time and effort, and ensuring safety and reliability. The design of the first and second strip grooves not only ensures that hot air enters the sealing channel and axial through hole when blowing hot air, but also solves the problem that if the heat shrink tubing is not properly fitted on the double-ended grounding wire, and the heat shrink tubing is stuck or stuck in the sealing channel or axial through hole due to heat, the waste heat shrink tubing can be removed through the first and second strip grooves. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the present invention.

[0013] Figure 2 This is a partial top view of the present invention.

[0014] Figure 3 This is a partial front cross-sectional view of the driving wheel and driven wheel of the tube feeding mechanism of the present invention.

[0015] Figure 4 This is a partial cross-sectional view of the front guide block of the tube feeding mechanism of the present invention.

[0016] Figure 5 This is a front partial cross-sectional schematic diagram of the tube cutting mechanism and the plate pushing mechanism of the present invention.

[0017] Figure 6This is a front view schematic diagram of the guiding mechanism of the present invention.

[0018] Figure 7 This is a partial three-dimensional schematic diagram of the location of the encapsulation block of the present invention. Detailed Implementation

[0019] See attached document Figure 1-7 The encapsulation device for the metal connector of the double-ended grounding wire includes a reel 1, a tube feeding mechanism 2, a tube cutting mechanism 3, a turntable 4, a guide mechanism 5, a positioning block 6, an encapsulation block 7, a hot air blowing mechanism 8, and a worktable 9. A vertical plate 91 is mounted on the worktable 9 near its front side. The turntable 4 is rotatably mounted on the front side of the vertical plate 91. A drive motor 41 is mounted on the rear side of the vertical plate 91, and the front end of the drive motor 41 drives and connects to the turntable 4. The tube feeding mechanism 2 is mounted on the left side of the vertical plate 91, and a reel 1 is designed on the worktable 9 behind the tube feeding mechanism 2. A tube cutting mechanism 3 is also designed on the front side of the tube feeding mechanism 2. The hot air blowing mechanism 8 is mounted on the right side of the vertical plate 91. A guide mechanism 5 is designed on the upper front side of the turntable 4, and the guide mechanism 5 is mounted on the front side of the turntable 4 via a bracket 54. The turntable 4 has several stations evenly designed around its circumference. Each station includes two axial through holes 42, which are designed side-by-side on the edge of the turntable 4. A first strip groove 43 is designed on the outer side of the axial through hole 42. The inner side of the first strip groove 43 is connected to the through hole, and the outer side of the first strip groove 43 is connected to the outer peripheral surface of the turntable 4. A positioning block 6 is installed on the upper end of the vertical plate 91. The positioning block 6 is located behind the turntable 4. The encapsulation block 7 is also installed on the upper end of the vertical plate 91. The encapsulation block 7 is located between the positioning block 6 and the turntable 4. A certain gap is left between the encapsulation block 7 and the positioning block 6. Two encapsulation channels 71 are also designed on the two axial through holes 42 corresponding to the workstation on the encapsulation block 7. A second strip groove 72 is designed on the upper end of the two encapsulation channels 71. The second strip groove 72 connects the encapsulation channel 71 and the upper end of the encapsulation block 7. The hot air blowing mechanism 8 includes an air blowing pipe 81, which is located above the encapsulation block 7. A sensing probe 73 is designed and installed on the upper end of the positioning block 6 corresponding to the position of the encapsulation channel 71. The bracket 54 is located on the left side in front of the turntable and blocks the workstation on the left side of the turntable. The first and second grooves are designed not only to ensure that hot air enters the encapsulation channel and axial through hole when hot air is blown, but also to solve the problem that if the heat shrink tubing is not properly fitted onto the double-ended grounding wire, and the heat shrink tubing is stuck or adhered to the encapsulation channel or axial through hole due to heat, the waste heat shrink tubing can be removed through the first and second grooves.

[0020] Figure 2-4The tube feeding mechanism 2 includes a front guide block 21, a rear guide block 22, a drive wheel 23, a driven wheel 24, a tube feeding motor 25, and a compression cylinder 26. The front guide block 21 is installed on one side of the vertical plate 91, and the rear guide block 22 is installed behind the front guide block 21. The drive wheel 23 and the driven wheel 24 are installed between the front guide block 21 and the rear guide block 22. The drive wheel 23 is rotatably mounted on the vertical worktable 9, and the tube feeding motor 25 is installed below the worktable 9. The drive end of the tube feeding motor 25 passes through the worktable 9 and drives the drive wheel 23. At the lower end, the extrusion cylinder 26 is installed on one side of the driving wheel 23. A rotatable driven wheel 24 is installed at the front end of the extrusion cylinder 26. The extrusion cylinder 26 drives the driven wheel 24 to press and move closer to the driving wheel 23 for cooperation. Two thermoplastic tube guide channels 27 are designed in the middle of the front guide block 21 and the rear guide block 22, respectively. The thermoplastic tube guide channels 27 of the front guide block 21 and the rear guide block 22 are located at the front and rear positions of the gap between the driven wheel 24 and the driving wheel 23 after they are pressed and moved closer. The thermoplastic tube guide channels 27 are designed as cross-shaped channels. The tube reel is rotatably mounted on the worktable by an inclined support. The tube reel can load two rolls of thermoplastic tube at a time and release them simultaneously, passing through the upper and lower thermoplastic tube guide channels on the front and rear guide blocks respectively. A left-tilted U-shaped frame is installed at the front end of the tube feeding motor. The driven wheel is vertically rotated and installed inside the left-tilted U-shaped frame. The driving wheel is also installed on the worktable via a right-tilted U-shaped frame. The driving wheel is vertically rotated and installed inside the right-tilted U-shaped frame. The left-tilted U-shaped frame is movable, while the right-tilted U-shaped frame is fixedly installed on the worktable.

[0021] Figure 5 The pipe cutting mechanism 3 includes a pipe cutting cylinder 31, a left cutter 32, and a right cutter 33. The right cutter 33 is fixed at the middle position on the left side of the vertical plate 91. The right cutter 33 is located in front of the pipe feeding mechanism 2 and on the rear left side of the turntable 4. The pipe cutting cylinder 31 is installed on the left side of the right cutter 33, and the left cutter 32 is driven to be installed at the front end of the pipe cutting cylinder 31. The cutting cylinder drives the left cutter 32 to move left and right to cooperate with the right cutter 33 for shearing.

[0022] Figure 6The guiding mechanism 5 includes a finger cylinder 51, an upper clamping block 52, and a lower clamping block 53. The finger cylinder 51 is mounted on the workbench 9 via a bracket 54. The upper clamping block 52 is installed at the upper finger position of the finger cylinder 51, and the lower clamping block 53 is installed at the lower finger position of the finger cylinder 51. The lower end of the upper clamping block 52 is designed with two semi-conical grooves, and the upper end of the lower clamping block 53 is designed with two semi-conical grooves. The two semi-conical grooves of the upper clamping block 52 and the two semi-conical grooves of the lower clamping block 53 form two guide grooves 55. The guide grooves 55 are located in front of the two axial through holes 42 at the uppermost position of the turntable 4. The guide grooves are wider on the outside and narrower on the inside, which can effectively guide the head of the double-ended grounding wire into the workbench, ensuring accurate insertion into the cut thermoplastic tube located at the workbench.

[0023] Figure 2 , Figure 7 The hot air blowing mechanism 8 further includes a support 82, a slide rail 83, a slider 84, and a front-to-back moving cylinder 85. The front-to-back moving cylinder 85 is mounted on the right side of the drive motor 41. The slide rail 83 is mounted on the front side of the front-to-back moving cylinder 85. The slider 84 is slidably mounted on the slide rail 83, and its rear end is connected to the front end of the front-to-back moving cylinder 85. The support 82 is mounted on the slider 84, and one end of the air blowing pipe 81 is fixedly connected to the upper end of the support 82. The lower end of the air blowing pipe has two air holes or air grooves, which are respectively aligned with the second strip groove above the two encapsulation channels. The end of the air blowing pipe is connected to a high-temperature resistant pipe such as a corrugated pipe to allow hot air to enter. The hot air is heated by an electric heating wire and blown by a fan to form a hot airflow. This is existing technology, and the present invention is described briefly.

[0024] Figure 5 The sealing device for the metal connector of the double-ended grounding wire also includes a pusher mechanism 10. The pusher mechanism 10 includes a pusher cylinder 101 and an arc-shaped pusher 102. The pusher cylinder 101 is installed on the upper left side of the vertical plate 91, and the arc-shaped pusher 102 is installed at the front end of the pusher cylinder 101. The front end of the arc-shaped pusher 102 blocks the rear side of the two axial through holes 42 in one station. The arc-shaped pusher pushes the cut heat shrink tube located in the station forward, and the bracket 54 is designed to block the outside of the station. When the heat shrink tube is squeezed, it will automatically open.

[0025] In use, this invention also includes a PLC control display, which is mounted on a workbench. The PLC control display controls the drive motor and the tube feeding motor via wires. Initially, manual adjustment is performed. Two rolls of thermoplastic tubing are manually installed on the tubing reel. The heads of the two rolls of thermoplastic tubing are manually moved forward, passing through the two thermoplastic tubing guide channels of the rear guide block of the tube feeding mechanism, and then through the front guide block. The PLC control display issues commands to control the extrusion cylinder to drive the driven wheel to extrude the drive wheel while simultaneously clamping the thermoplastic tubing in the middle. Then, it controls the tube feeding motor to operate, driving the drive wheel to rotate. In this way, the drive wheel and the driven wheel pull the thermoplastic tubing towards... The forward movement, where the tube feeding motor can be designed as a stepper motor or a servo motor, rotates a certain number of revolutions each time, conveying the thermoplastic tube forward at a fixed distance to the two axial through holes at one station of the turntable. After each delivery, the cutting mechanism's cutting cylinder controls the left cutter to extend to the right, and the left and right cutters form a shearing action, cutting the conveyed thermoplastic tube. The cut thermoplastic tube remains in the station of the turntable. The drive motor controls the turntable to rotate one station angle, and the station containing the thermoplastic tube moves to the next station. The pushing mechanism's pushing cylinder controls the arc-shaped pushing plate to push forward, and the arc-shaped pushing plate pushes and squeezes the thermoplastic tube. The front end of this station is designed with a guide mechanism bracket to block the flow, ensuring the thermoplastic tube... Under compression, the flat thermoplastic tube transforms into an open thermoplastic tube. The pushing mechanism then resets, awaiting the next push. The drive motor controls the turntable to rotate one station angle, at which point the open thermoplastic tube reaches the uppermost station. The guiding mechanism, via a finger cylinder, controls the upper and lower clamping blocks to merge, forming two guide grooves. The operator manually inserts the two ends of the double-ended grounding wire into the two guide grooves, into the axial through-hole of the station, and through the already opened thermoplastic tube within the axial through-hole. It continues forward, entering the encapsulation channel of the encapsulation block, with the metal head of the double-ended grounding wire protruding and contacting the sensor probe on the positioning block. Once all the sensors are in position, the hot air blowing mechanism begins blowing hot air into the encapsulation channel, causing the thermoplastic tube to shrink and solidify. The hot air blowing mechanism operates by a forward-backward moving cylinder pushing a slider to slide back and forth on a slide rail. A support on the slider moves the air blowing pipe back and forth above the encapsulation channel. The air blowing pipe, through air holes or grooves, blows hot air into the encapsulation channel via a second strip-shaped groove, uniformly heating the thermoplastic tube through this forward-backward movement. This ensures even heating and shrinkage of the thermoplastic tube. After approximately 5 seconds of heating, the hot air blowing stops. The guide mechanism, controlled by a finger cylinder, opens the upper and lower clamps to facilitate the removal of the thermoplasticized double-ended grounding wire. After removal, the turntable continues to rotate, repeating the above actions. In this invention, the cylinders are pneumatically controlled, and the pneumatic unit is then uniformly controlled by a PLC control display.

Claims

1. A sealing device for the metal connector of a double-ended grounding wire, characterized in that, It includes a tube reel, a tube feeding mechanism, a tube cutting mechanism, a turntable, a guide mechanism, a positioning block, a sealing block, a hot air blowing mechanism, and a worktable. A vertical plate is mounted on the worktable near the front. A turntable is rotatably mounted on the front of the vertical plate. A drive motor is mounted on the rear of the vertical plate, with its front end connected to the turntable. A tube feeding mechanism is mounted on the left side of the vertical plate, with a tube reel mounted on the worktable behind it. A tube cutting mechanism is also designed in front of the tube feeding mechanism. A hot air blowing mechanism is mounted on the right side of the vertical plate. A guide mechanism is designed on the upper front of the turntable. The turntable has several stations evenly spaced around its circumference. Each station includes two axial through holes. The holes are designed side-by-side at the edge of the turntable. A first groove is designed on the outer side of each of the two axial through holes. The inner side of the first groove connects to the through hole, and the outer side of the first groove connects to the outer circumference of the turntable. A positioning block is installed on the upper end of the vertical plate, located behind the turntable. A sealing block is also installed on the upper end of the vertical plate, positioned between the positioning block and the turntable, with a certain gap between them. Two sealing channels are designed on the two axial through holes corresponding to the workstations on the sealing block. A second groove is designed on the upper end of each of the two sealing channels, connecting the sealing channel to the upper end of the sealing block. The hot air blowing mechanism includes a blowing pipe. The air tube is located above the packaging block; a sensor probe is designed and installed at the upper end of the positioning block corresponding to the packaging channel position; the tube feeding mechanism includes a front guide block, a rear guide block, a driving wheel, a driven wheel, a tube feeding motor, and a compression cylinder. The front guide block is installed on one side of the vertical plate, and the rear guide block is installed behind the front guide block. The driving wheel and the driven wheel are installed between the front and rear guide blocks. The driving wheel is rotatably mounted on the worktable, and the tube feeding motor is installed below the worktable. The drive end of the tube feeding motor passes through the worktable and drives the lower end of the driving wheel. The compression cylinder is installed on one side of the driving wheel, and a rotatable driven wheel is installed at the front end of the compression cylinder. The cylinder drives the driven wheel to press and move closer to the driving wheel for cooperation. The front guide block and the rear guide block are each designed with two thermoplastic tube guide channels arranged vertically. The thermoplastic tube guide channels of the front guide block and the rear guide block are located at the front and rear positions of the gap between the driven wheel and the driving wheel after they are pressed and moved closer. The thermoplastic tube guide channels are designed as cross-shaped channels. The sealing device at the metal connector of the double-headed grounding wire also includes a pusher mechanism. The pusher mechanism includes a pusher cylinder and an arc-shaped pusher. The pusher cylinder is installed on the upper left side of the vertical plate. An arc-shaped pusher is installed at the front end of the pusher cylinder. The front end of the arc-shaped pusher blocks the rear side of the two axial through holes in one station.

2. The encapsulation device for the metal connector of the double-ended grounding wire according to claim 1, characterized in that, The pipe cutting mechanism includes a pipe cutting cylinder, a left cutter, and a right cutter. The right cutter is fixed in the middle of the left side of the vertical plate. The right cutter is located in front of the pipe feeding mechanism and behind the left side of the turntable. The pipe cutting cylinder is installed to the left of the right cutter, and the left cutter is driven to be installed at the front end of the pipe cutting cylinder. The cutting cylinder drives the left cutter to move left and right to cooperate with the right cutter in cutting.

3. The encapsulation device for the metal connector of the double-ended grounding wire according to claim 1, characterized in that, The guiding mechanism includes a finger cylinder, an upper clamping block, and a lower clamping block. The finger cylinder is mounted on the worktable via a bracket. The upper clamping block is installed at the upper finger position of the finger cylinder, and the lower clamping block is installed at the lower finger position of the finger cylinder. The lower end of the upper clamping block is designed with two semi-conical grooves, and the upper end of the lower clamping block is designed with two semi-conical grooves. The two semi-conical grooves of the upper clamping block and the two semi-conical grooves of the lower clamping block form two guide grooves. The guide grooves are located in front of the two axial through holes at the uppermost position of the turntable.

4. The sealing device for the metal connector of the double-ended grounding wire according to claim 1, characterized in that, The hot air blowing mechanism also includes a support, a slide rail, a slider, and a front and rear moving cylinder. The front and rear moving cylinder is installed on the right side of the drive motor. A slide rail is installed on the front side of the front and rear moving cylinder. The slider is slidably installed on the slide rail. The rear end of the slider is connected to the front end of the front and rear moving cylinder. A support is installed on the slider. One end of the air blowing pipe is fixedly connected to the upper end of the support. Two air holes are opened at the lower end of the air blowing pipe. The two air holes are respectively facing the second strip groove above the two encapsulation channels.

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