Intelligent wire cutting device for wire harness production

Abstract

The application relates to the technical field of wire cutting machines, and discloses an intelligent wire cutting device for wire harness production, which comprises a buffer and tight pressing device, the inner cavity bottom of the buffer and tight pressing device is fixedly connected with a partition plate, the inner cavity top of the buffer and tight pressing device is fixedly connected with two electromagnets, the inner cavity bottom of the buffer and tight pressing device is fixedly connected with air bags on the left and right sides, the air bags are arranged in pairs in a symmetrical mode, the left and right sides of the partition plate are fixedly connected with a group of air bags, respectively, the top of a flexible supporting part is provided with a baffle, a plurality of clamping plates are fixedly connected to the top of the baffle at equal intervals, steel balls are arranged on the left and right sides of the clamping plates, respectively, the outer skin of the air bag is movably connected with a wire pocket, and a plurality of rolling balls are arranged on the top of the wire pocket. The intelligent wire cutting device for wire harness production has the advantages of firmly clamping the wire harness, avoiding over-tight clamping of the wire harness and adjusting the wire feeding length of the wire drum, and solves the problems of wire harness sliding and wire harness deviation caused by the lack of a clamping device in the wire feeding process due to the inertia of the wire harness feeding a certain distance from the wire drum.

Description

Technical Field

[0001] This invention relates to the field of wire cutting machine technology, specifically to an intelligent wire cutting device for wire harness production. Background Technology

[0002] The automatic wire cutting machine uses a PLC to control two stepper motors. One motor drives two conveyor wheels to rotate and feed the wire, while the other motor drives the wire trough to rotate so that the finished products in the wire trough can be tilted into the finished product trough below. The cutting is powered by an air pump, and the PLC controls the solenoid valve to supply power to the cylinder so that it presses down to cut the wire. Wire cutting machines are generally used with a feeding mechanism.

[0003] In existing wire cutting machines, the feeding mechanism causes the wire harness to slip off the spool due to inertia after each pull and before the next pull, making the harness slack and prone to detaching from the guide rollers. Furthermore, while the clamps engage to hold the uncut wire harness as it enters the cutting machine, they may not provide a secure grip, allowing uncut strands to shift and reducing stability, thus affecting the efficiency of subsequent feeds into the machine. Additionally, excessive pressure applied by the clamps can flatten the wire harness, damaging it and impacting its usability. Summary of the Invention

[0004] In view of the shortcomings of existing wire cutting machine feeding devices mentioned in the background art, the present invention provides an intelligent wire cutting device for wire harness production, which has the advantages of stable clamping of wire harness and simultaneous adjustment of wire spool feeding length, thus solving the technical problems mentioned in the background art.

[0005] This invention provides the following technical solution: an intelligent wire cutting device for wire harness production, comprising a buffer clamping device, a displacement sensor fixedly connected to the left side of the buffer clamping device, a wire feeding wheel on the left side of the buffer clamping device, a wire spool on the left side of the wire feeding wheel, a support frame on the right side of the buffer clamping device, guide wheels fixedly installed on the left and right sides of the support frame, two electromagnets fixedly connected to the top of the inner cavity of the buffer clamping device, airbags fixedly connected to the bottom sides of the inner cavity of the buffer clamping device, the airbags being arranged symmetrically in a group, the bottom of the airbag being composed of a flexible support part, the top of the airbag being composed of an airbag skin, the flexible support part being fixedly connected to the airbag skin, a wire pocket being fixedly connected to the airbag skin, multiple ball bearings placed on the top of the wire pocket, baffles fixedly connected to the left and right sides of the buffer clamping device, a baffle plate fixedly installed on the top of the flexible support part, the baffle plate being used to divide the airbag into upper and lower parts, and multiple steel balls being placed in the upper part of the inner cavity of the airbag.

[0006] Preferably, a partition is fixedly connected to the bottom of the inner cavity of the buffer clamping device, a set of airbags is fixedly connected to the left and right sides of the partition, and multiple clamps are fixedly connected to the top of the baffle at equal intervals. Multiple steel balls of the same number are placed on the left and right sides of the clamps.

[0007] Preferably, the partition and clamp are both made of magnetically blocking material.

[0008] Preferably, the end of the baffle used to support the airbag is arc-shaped.

[0009] Preferably, the loop can move up and down according to the expansion and contraction of the airbag outer skin.

[0010] Preferably, the bottom of the flexible support portion has a hole.

[0011] Preferably, the steel ball is made of a magnetically conductive material and can be attracted by an electromagnet when energized.

[0012] The present invention has the following beneficial effects:

[0013] 1. This invention uses a displacement sensor to detect whether there is wire bundle movement on the wire spool of the wire cutting machine. When the wire cutting machine feeds wire intermittently, after the wire bundle is fed from the spool, it will be fed a certain distance beyond the spool due to inertia. At this time, the electromagnet is not energized, the steel ball is not attracted by the electromagnet, the outer skin of the air bag contracts and drives the wire pocket to move downward. The wire pocket drives the wire bundle to move downward, and the wire bundle moves inside the ball. There is a gap in the middle of the ball. The wire bundle is squeezed into an irregular arc shape by the ball, which buffers the straightening force generated when the wire bundle is fed, and extends the length of the wire bundle in the buffer and pressing device. The wire bundle that is fed a certain distance beyond the spool due to inertia is absorbed by the buffer and pressing device, preventing the wire bundle from slipping off the guide wheel.

[0014] 2. This invention uses a displacement sensor to detect whether there is movement of the wire bundle on the wire spool of the wire cutting machine. When the wire bundle stops being fed, the displacement sensor controls the electromagnet to open. The electromagnet attracts the steel ball and moves it upward, causing the outer skin of the air bladder to tighten. The outer skin of the air bladder moves the wire pocket upward, and the wire pocket moves the wire bundle upward. At the same time, the ball bearings above the wire bundle are moved upward by the outer skin of the air bladder and the wire bundle. The tightening of the outer skin of the air bladder, combined with the gravity of the wire pocket and the ball bearings, provides a certain amount of compressive force to the wire bundle, making the wire bundle reach a compacted state. Because the ball bearings make multi-point contact and compress the wire bundle, the pressure is evenly distributed. Before the wire bundle is compressed, the gaps between the ball bearings gradually shrink due to mutual compression, effectively providing a buffer space and avoiding excessive compressive force that flattens the wire bundle and damages it, thereby improving the protection of the wire bundle.

[0015] 3. This invention uses the weight of the ball bearings in conjunction with the outer sheath of the airbag to compress the wire harness. The number of ball bearings can be adjusted to match the wire harness diameter, effectively controlling the compressive force on the wire harness within the rated range. This avoids excessive pressure on the wire harness under the compressed state, which could flatten the wire harness and cause damage.

[0016] 4. In this invention, when the wire harness moves within the buffer clamping device, the wire harness will leave the wire pocket due to tension and be in a "suspended" state. Some of the balls will be scattered at the top of the wire pocket and the bottom of the wire harness. When the wire harness moves horizontally, it is driven by the balls. The friction between the balls and the wire harness is smaller than the friction between the wire harness and the wire pocket, which reduces the friction when the wire harness moves and avoids damage to the wire harness. Attached Figure Description

[0017] Figure 1 This is a side structural cross-sectional view of the buffer clamping device of the present invention in the wire feeding state;

[0018] Figure 2 This is a side cross-sectional view of the buffer clamping device of the present invention in the clamping state;

[0019] Figure 3 This is a front view of the overall structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the side structure of the buffer clamping device of the present invention;

[0021] Figure 5 This is a top view of the structure of the buffer clamping device of the present invention.

[0022] In the diagram: 1. Buffer clamping device; 2. Wire spool; 3. Wire feed wheel; 4. Displacement sensor; 5. Support frame; 6. Guide wheel; 7. Electromagnet; 8. Airbag outer skin; 9. Flexible support part; 10. Baffle; 11. Steel ball; 12. Wire pocket; 13. Ball bearing; 14. Wire harness; 15. Material baffle; 16. Slide groove; 17. Spring; 18. Partition; 19. Clamping plate. Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figures 1-5 A smart wire cutting device for wire harness production includes a buffer clamping device 1. A displacement sensor 4 is fixedly connected to the left side of the buffer clamping device 1. The displacement sensor 4 detects the feeding of wire harness 14 on the wire spool 2. When the wire harness 14 is detected to move, the sensor controls the electromagnet 7 to de-energize, allowing the wire harness 14 to be fed smoothly. When the wire harness 14 stops feeding, the sensor controls the electromagnet 7 to open. A wire feeding wheel 3 is provided on the left side of the buffer clamping device 1, which assists in feeding the wire harness 14. A wire spool 2 is provided on the left side of the wire feeding wheel 3, with a large number of wire harnesses 14 surrounding it. The wire harnesses 14 are transmitted by rotating the wire spool 2. A support frame 5 is provided on the right side of the buffer clamping device 1. Guide wheels 6 are fixedly installed on the left and right sides of the support frame 5, respectively. The two guide wheels 6 have a height difference. The wire harness 14 is led out from the wire spool 2 in an S-shape, passes through the guide wheels 6, and is pulled into the wire cutting machine.

[0025] A partition 18 is fixedly connected to the bottom of the inner cavity of the buffer clamping device 1. The partition 18 is made of a magnetically blocking material, which can isolate the magnetic force of the electromagnets 7 and prevent the two electromagnets 7 from interfering with each other. The partition 18 divides the inner cavity of the buffer clamping device 1 into two spaces of the same size. The partition 18 has slots that fit the size of the wire harness 14, allowing the wire harness 14 to move up and down within the partition 18. The partition 18 also separates multiple balls 13, preventing uneven distribution of the balls 13 in the two spaces inside the buffer clamping device 1. Two electromagnets 7 are fixedly connected to the top of the inner cavity of the buffer clamping device 1. The electromagnets 7 are controlled by a displacement sensor 4.

[0026] The inner cavity of the buffer compression device 1 is fixedly connected to two airbags on both sides, and the airbags are arranged symmetrically on the left and right as a group. The bottom of the airbag is composed of a flexible support part 9, and the bottom of the flexible support part 9 has holes, which can be used to adjust the pressure inside the airbag when the airbag expands, contracts and tightens; the top of the airbag is composed of an airbag skin 8, which is driven to contract and tighten by steel balls 11. When the steel ball 11 is attracted by the electromagnet 7, causing the airbag outer skin 8 to tighten, it drives the wire pocket 12 to move upward, thereby moving the wire harness 14 upward. The wire harness 14 is straightened, and the tightened airbag outer skin 8, together with the wire pocket 12, fixes the bottom of the wire harness 14. The top of the wire harness 14 is pressed by the weight of the rollers 13, clamping and fixing the wire harness 14 to prevent it from shifting during the cutting process, reducing the stability of the wire harness 14, and affecting the efficiency of the wire harness 14 entering the wire cutting machine. When the electromagnet 7 is de-energized and no longer attracts the steel ball 11, the steel ball 11 falls onto the baffle 10, the airbag outer skin 8 contracts, causing the wire pocket 12 to fall, thereby moving the wire harness 14 downward. The rollers 13 are distributed on the top of the wire harness 14. The bottom and the wire harness 14 are arranged in an irregular arc shape inside the buffer and pressing device 1, which extends the length of the wire harness 14 inside the buffer and pressing device 1 and absorbs the wire harness 14 that has been conveyed a longer distance from the wire spool 2 due to inertia, preventing the wire harness 14 from slipping off the guide wheel 6; the outer skin 8 of the airbag is fixedly connected to the flexible support part 9, and a set of airbags is fixedly connected to the left and right sides of the partition 18 respectively. One end of the airbag is fixedly connected to the inner cavity of the buffer and pressing device 1, and the other end is fixedly connected to the partition 18; the top of the flexible support part 9 is provided with a baffle 10, one end of which is arc-shaped to prevent the outer skin 8 of the airbag from being scratched when it contracts and tightens, which would cause the outer skin 8 of the airbag to break. The baffle 10 receives the steel ball 11. Multiple clamping plates 19 are fixedly connected at equal intervals to the top of the baffle. The clamping plates 19 are made of a magnetically blocking material, such as plastic, to prevent the two electromagnets 7 from interfering with each other's movement of the steel balls 11 after being energized. The clamping plates 19 divide the inside of the airbag into multiple equally sized compartments to prevent the steel balls 11 from accumulating on the baffle 10 and affecting the tension and contraction of the airbag outer skin 8. The same number of steel balls 11 are placed on the left and right sides of the clamping plates 19. The steel balls 11 can be attracted by the energized electromagnets 7 and move upward, causing the airbag outer skin 8 to tighten.

[0027] The airbag outer skin 8 is fixedly connected to the wire harness 12. Multiple ball bearings 13 are placed on the top of the wire harness 12. These ball bearings 13 are made of non-magnetic materials, such as stainless steel, to prevent them from being attracted by the electromagnet 7. When the airbag is inflated, the multiple ball bearings 13 adhere to the airbag outer skin 8 and the wire harness 14, using their own weight to compress and secure the wire harness 14. The number of ball bearings 13 is constant, ensuring that the pressure on the wire harness 14 remains within a constant range, preventing excessive pressure from flattening the wire harness 14. Damage may occur; when the airbag contracts, the wiring harness 14 moves downward, and some of the balls 13 slide to the bottom of the wiring harness 14. There are gaps between the balls 13, providing a buffer space for the wiring harness 14. The upper and lower balls 13 compress the wiring harness 14, causing it to form an irregular arc shape, thus buffering the straightening force generated when the wiring harness 14 moves. At the same time, the wiring harness 14 moves horizontally, and the friction force is less than the friction force of the wiring harness 14 sliding in the wire pocket 12, reducing friction loss and damage to the wiring harness 14. Baffle plates 15 are fixedly connected to the left and right sides of the buffer clamping device 1, respectively. The baffle plates 15 can compress the spring 17 to move upward in the slide groove 16, and move downward under its own weight and the restoring force of the spring 17.

[0028] The method of using (working principle) of this invention is as follows:

[0029] The wire harness 14 is pulled by the worker from the wire spool 2 through the wire feeding wheel 3, the buffer clamping device 1, and the guide wheel 6 into the wire cutting machine. When the wire spool 2 stops feeding, the displacement sensor 4 detects that the wire harness 14 is stable and controls the electromagnet 7 to be energized. The adsorbed steel ball 11 moves upward, causing the airbag outer skin 8 to tighten. The airbag outer skin 8 moves the wire pocket 12 upward, and the wire pocket 12 moves the wire harness 14 upward, straightening the wire harness 14. The bottom of the wire harness 14 is fixed, and multiple rollers 13 at the top of the wire harness 14 compress it, providing a certain compressive force to clamp the wire harness 14 securely. This prevents the uncut wire harness 14 from moving during the cutting process, reducing the stability of the wire harness 14 and affecting its stability. The efficiency of subsequent entry into the cutting machine is improved; at the same time, when the wire harness 14 is cut, the weight of the balls 13 themselves acts as a clamping force, preventing the wire pressure roller from slipping during the stripping process and affecting the cutting efficiency; when the wire harness 14 is squeezed by the balls 13, the gaps between the multiple balls 13 provide a buffer space for the wire harness 14, preventing excessive squeezing force from flattening the wire harness 14 and causing damage; the number of balls 13 is constant, and the squeezing force provided is within a constant range, which can prevent the wire harness from being subjected to excessive squeezing and thus flattening the wire harness 14 and causing damage.

[0030] When the wire drum 2 starts feeding wire, the displacement sensor 4 detects the movement of the wire harness 14, controls the electromagnet 7 to be de-energized, the steel ball 11 falls, the airbag outer skin 8 contracts, the wire pocket 12 moves downward, and the wire harness 14 moves downward with the wire pocket 12. Some of the rollers 13 slide to the bottom of the wire harness 14. The wire harness 14 is driven by the rollers 13, and the friction is less than the friction of the wire harness 14 sliding on the wire pocket 12, which reduces the friction when the wire harness 14 moves and reduces friction damage to the wire harness 14. In addition, there are gaps between the multiple rollers 13, and the wire harness 14 is squeezed by the rollers 13 at the top and bottom, making the wire harness 14 into an irregular arc shape, which buffers the straightening force when the wire harness 14 is fed, and at the same time extends the length of the wire harness 14 inside the buffer and pressing device 1. The wire harness 14 that is fed a longer distance from the wire drum 2 due to inertia is absorbed by the buffer and pressing device 1, preventing the wire harness 14 from slipping off the guide wheel 6.

Claims

1. An intelligent wire cutting device for wire harness production, comprising a buffer clamping device (1), characterized in that: A displacement sensor (4) is fixedly connected to the left side of the buffer clamping device (1). A wire feeding wheel (3) is provided on the left side of the buffer clamping device (1), and a wire spool (2) is provided on the left side of the wire feeding wheel (3). A support frame (5) is provided on the right side of the buffer clamping device (1). Guide wheels (6) are fixedly installed on the left and right sides of the support frame (5). Two electromagnets (7) are fixedly connected to the top of the inner cavity of the buffer clamping device (1). Airbags are fixedly connected to the bottom sides of the inner cavity of the buffer clamping device (1). The airbags are arranged symmetrically on the left and right as a group. The bottom of the airbags is supported by a flexible support. The airbag is composed of a support (9), the top of which is composed of an airbag skin (8), the airbag skin (8) is fixedly connected to the flexible support (9), the airbag skin (8) is fixedly connected to a wire pocket (12), and multiple balls (13) are placed on the top of the wire pocket. The left and right sides of the buffer pressing device (1) are respectively fixedly connected to baffles (15), the top of the flexible support (9) is provided with a baffle (10), the baffle (10) is fixedly installed on the inner wall of the buffer pressing device (1), the baffle (10) is used to divide the airbag into upper and lower parts, and multiple steel balls (11) are placed in the upper part of the inner cavity of the airbag.

2. The intelligent wire cutting device for wire harness production according to claim 1, characterized in that: The bottom of the inner cavity of the buffer clamping device (1) is fixedly connected to a partition (18), and a set of airbags are fixedly connected to the left and right sides of the partition (18). Multiple clamps (19) are fixedly connected at equal intervals to the top of the baffle (10), and multiple steel balls (11) of the same number are placed on the left and right sides of the clamps (19).

3. The intelligent wire cutting device for wire harness production according to claim 2, characterized in that: The partition (18) and clamp (19) are both made of magnetically blocking material.

4. The intelligent wire cutting device for wire harness production according to claim 2, characterized in that: The baffle (10) is arc-shaped at one end used to support the airbag.

5. The intelligent wire cutting device for wire harness production according to claim 1, characterized in that: The loop (12) can move up and down according to the expansion and contraction of the airbag skin (8).

6. The intelligent wire cutting device for wire harness production according to claim 1, characterized in that: The bottom of the flexible support part (9) has a hole.

7. The intelligent wire cutting device for wire harness production according to claim 1, characterized in that: The steel ball (11) is made of magnetic material and can be attracted by an electromagnet (7) when energized.

Images