Resistance wire clamping device

Abstract

The utility model relates to the technical field of resistance wires, in particular to a resistance wire clamping device, which comprises a bottom plate, a hollow shaft, a driving component, a movable plate, a guide wheel and a support wheel, the bottom plate is connected with a vertical plate, and the vertical plate is rotatably connected with a turntable A. The hollow shaft is connected with the rotating disc A. The hollow shaft is provided with a plurality of storage grooves communicating with the interior of the hollow shaft, and clamping blocks are slidably connected into the storage grooves. The driving assembly is connected with the hollow shaft and is in driving connection with the clamping blocks. The movable plate is slidably connected with the bottom plate and rotationally connected with the rotary disc B. The hollow shaft penetrates through the rotary disc B and slides with the rotary disc B. A tensioning assembly A used for pushing the movable plate to the rotary disc A is arranged on the bottom plate. And the two guide wheels are rotationally connected with the vertical plate. The supporting wheel is rotationally connected with the vertical plate, an upper pressing wheel matched with the supporting wheel is arranged on the vertical plate, and a tensioning assembly B used for pushing the upper pressing wheel downwards is arranged on the vertical plate. When the resistance wire winding rollers with different inner diameters are clamped, the resistance wire winding rollers can be effectively prevented from jumping, and the linear output of the resistance wire is stable.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance wires, in particular to a resistance wire clamping device. Background Art

[0002] The resistor winding machine is a device used for equidistant spiral winding on a material rod of a resistor wire. It includes a welding machine and a resistor clamping device. The existing resistor wire clamping device needs to be installed on one side of the resistor winding machine when in use, so as to facilitate use. However, the existing clamping device is troublesome to operate when removing and replacing the resistor wire winding roller.

[0003] The technical solution disclosed in the Chinese patent with authorization announcement number CN219738665U can clamp the resistance wire through two clamping plates, and is designed with multiple clamping grooves of different sizes, so that resistance wires of different sizes can be clamped, thereby increasing the practicality of the device. Through the design of the adjustment plate, the top pin can be driven by adjusting the adjustment plate to limit the adjusted active shaft, thereby ensuring stability during use.

[0004] However, the device still has some shortcomings: the resistance wire is prone to sliding contact with the inner wall and edge of the clamping groove during transportation, causing the resistance wire to wear or even break, and the coil in the device lacks an inner tensioning limit structure. If the inner diameter of the coil is large, the coil will jump during the wire feeding process, resulting in uneven wire output. Utility Model Content

[0005] The utility model aims to provide a resistance wire clamping device in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is a resistance wire clamping device, which comprises a bottom plate, the bottom plate is connected to a vertical plate, and the vertical plate is rotatably connected to a turntable A.

[0007] A hollow shaft is connected to the turntable A. A plurality of receiving grooves connected to the interior of the hollow shaft are arranged in a ring array around the axis of the hollow shaft, and a card block is slidably connected in the receiving groove.

[0008] A driving component is connected to the hollow shaft and drives the connected clamping blocks to synchronously adjust the distance between the clamping blocks and the axis of the hollow shaft.

[0009] The movable plate is slidably connected to the bottom plate, the movable plate is rotatably connected to the turntable B, the hollow shaft passes through the turntable B and slides with it, and a tensioning component A for pushing the movable plate toward the turntable A is arranged on the bottom plate.

[0010] Guide wheels, both guide wheels are rotatably connected to the vertical plate to limit the lateral movement of the resistance wire.

[0011] And a supporting wheel, the supporting wheel is rotatably connected to the vertical plate, an upper pressing wheel cooperating with the supporting wheel is arranged on the vertical plate, and a tensioning assembly B for pushing the upper pressing wheel downward is arranged on the vertical plate.

[0012] Preferably, a plurality of limit frames are arranged in a ring array on the hollow shaft, each limit frame is respectively covered and arranged on the outside of the corresponding side receiving groove, and each clamping block is respectively located in the corresponding side limit frame and is slidably connected to the inner wall thereof.

[0013] Preferably, a through hole is provided on turntable B, the hollow shaft is slidably connected to the inner wall of the through hole, and a plurality of limit grooves are provided on turntable B in a circular array around its axis, each limit frame is respectively located in the corresponding side limit groove, and each clamping block is respectively located in the corresponding side limit groove and slidably connected to its inner wall.

[0014] Preferably, the driving assembly includes a slider, a connecting rod and a bidirectional screw. The two sliders are symmetrically arranged in the hollow shaft and slidably connected to the inner wall thereof, and each connecting rod is rotatably connected to the corresponding side slider and the block. The bidirectional screw is rotatably connected to the hollow shaft, and the sliders on both sides are respectively spirally connected to the corresponding sides of the bidirectional screw.

[0015] Preferably, the bidirectional screw rod is slidably connected to the latch pin, the latch pin is rotationally connected to the hollow shaft, and the latch pin is connected to the crank.

[0016] Preferably, the latch is connected to the chuck, a tooth groove is provided on the hollow shaft, and the chuck is meshed with the tooth groove in the vertical direction.

[0017] Preferably, a brake assembly for adjusting the rotation resistance of the support wheel is arranged on the vertical plate, and the brake assembly comprises a knob, a screw rod and a brake block. The brake block is slidably connected to the vertical plate and abuts against the axle of the support wheel. The knob is connected to the screw rod, the screw rod is spirally connected to the vertical plate, and the screw rod is slidably connected to the brake block.

[0018] Compared with the prior art, the utility model has the following beneficial technical effects:

[0019] By setting a hollow shaft and a clamping block with an adjustable telescopic distance on the hollow shaft, it is convenient to tension and clamp the resistance wire rollers with different inner diameters, thereby ensuring that the resistance wire roller is coaxial with the hollow shaft, thereby preventing it from jumping during the unwinding process, and effectively improving the smoothness and stability of the unwinding of the resistance wire; by setting the structure of the chuck and the tooth groove, it is possible to effectively prevent the bidirectional lead screw from rotating freely when following the rotation of the hollow shaft, thereby ensuring that the tension of the resistance wire roller on the clamping block is constant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the connection structure of various components on the turntable A;

[0022] Figure 3 It is the structural diagram of the hollow shaft;

[0023] Figure 4 It is a schematic diagram of the connection structure between the card block and the bidirectional screw rod.

[0024] Figure numerals: 1, bottom plate; 101, slide groove; 2, vertical plate; 3, turntable A; 4, hollow shaft; 401, storage groove; 402, tooth groove; 5, limit frame; 6, block; 7, slider; 8, connecting rod; 9, two-way screw; 10, latch; 11, crank; 12, chuck; 13, movable plate; 14, turntable B; 141, limit groove; 15, handle; 16, tensioning assembly A; 17, guide wheel; 18, support wheel; 19, brake assembly; 20, upper pressure wheel; 21, tensioning assembly B. DETAILED DESCRIPTION

[0025] Embodiment 1

[0026] like Figure 1-Figure 4As shown, a resistance wire clamping device proposed by the utility model includes a base plate 1, a hollow shaft 4, a driving assembly, a movable plate 13, a guide wheel 17 and a supporting wheel 18. The base plate 1 is connected to the vertical plate 2, and the vertical plate 2 is rotatably connected to the turntable A3. The hollow shaft 4 is connected to the turntable A3, and a plurality of receiving grooves 401 connected to the inside of the hollow shaft 4 are arranged in a ring array around its axis, and a card block 6 is slidably connected in the receiving groove 401. The driving assembly is connected to the hollow shaft 4 and drives the connection of each card block 6 to synchronously adjust the distance between each card block 6 and the axis of the hollow shaft 4. The driving assembly includes a slider 7, a connecting rod 8 and a bidirectional screw 9. The two sliders 7 are symmetrically arranged in the hollow shaft 4 and slidably connected to its inner wall, and each connecting rod 8 is rotatably connected to the corresponding side slider 7 and the card block 6. The bidirectional screw 9 is rotatably connected to the hollow shaft 4, and the sliders 7 on both sides are spirally connected to the corresponding sides of the bidirectional screw 9. The bidirectional screw rod 9 is slidably connected to the latch pin 10, which is rotatably connected to the hollow shaft 4 and connected to the crank 11. The latch pin 10 is connected to the chuck 12, and the hollow shaft 4 is provided with a tooth groove 402. The chuck 12 is slidably connected to the tooth groove 402 in the horizontal direction, and the chuck 12 is meshed with the tooth groove 402 in the vertical direction. The movable plate 13 is slidably connected to the bottom plate 1, and the movable plate 13 is rotatably connected to the turntable B14. The hollow shaft 4 penetrates the turntable B14 and slides therewith. The movable plate 13 is connected to the handle 15. The bottom plate 1 is provided with a tensioning assembly A16 for pushing the movable plate 13 toward the turntable A3. The tensioning assembly A16 includes a slide bar and a spring A. A slide groove 101 is provided on the bottom plate 1. The slide bar is located in the slide groove 101 and connected to its inner wall. The spring A is sleeved on the slide bar and slidably connected to it. The bottom of the movable plate 13 is inserted into the slide groove 101 and slidably connected to its inner wall. The two ends of the spring A are respectively abutted on the side of the movable plate 13 away from the turntable A3 and the inner wall of the slide groove 101. The two guide wheels 17 are both rotatably connected to the vertical plate 2. The guide wheels 17 are perpendicular to the bottom plate 1 to limit the lateral movement of the resistance wire. The support wheel 18 is rotatably connected to the vertical plate 2. The gap between the guide wheels 17 on both sides is not greater than the opening width of the annular groove of the support wheel 18. A mounting plate is provided on the vertical plate 2. The mounting plate is parallel to the bottom plate 1. The mounting plate is connected to the upper pressure wheel 20. The vertical plate 2 is provided with a tensioning assembly B for pushing the upper pressure wheel 20 downward. The tensioning assembly B includes a telescopic rod and a spring B. The outer tube of the telescopic rod is connected to the bottom of the mounting plate. The inner rod of the telescopic rod is rotatably connected to the axle of the upper pressure wheel 20. The spring B is sleeved on the outside of the telescopic rod, and the two ends of the spring B are respectively abutted against the axle of the upper pressure wheel 20 and the bottom of the mounting plate. A brake assembly 19 for adjusting the rotation resistance of the support wheel 18 is provided on the vertical plate 2. The brake assembly 19 includes a knob, a screw and a brake block. The brake block is slidably connected to the vertical plate 2 and abuts against the axle of the support wheel 18. The knob is connected to the screw, the screw is spirally connected to the vertical plate 2, and the screw is slidably connected to the brake block.

[0027] In this embodiment, the handle 15 is pulled to move the movable plate 13 away from the vertical plate 2. At this time, the spring A contracts, and the resistance wire roller is inserted into the hollow shaft 4 and the handle 15 is released. The spring A tensions the movable plate 13 so that the turntable B14 cooperates with the turntable A3 to clamp the resistance wire roller. Then, the crank 11 is pulled to disengage the chuck 12 from the tooth groove 402, thereby releasing the rotation restriction on the bidirectional lead screw 9. Then, the bidirectional lead screw 9 is driven to rotate with the help of the crank 11. The sliders 7 on both sides slide relative to each other under the action of the bidirectional lead screw 9, and then the connecting rod 8 pushes each card block 6 to extend synchronously until it is pressed against the inner wall of the insertion hole of the resistance wire roller. At this time, the resistance wire roller is coaxial with the hollow shaft 4, and it will not jump when unwinding, thereby making the release of the resistance wire more stable. Then, the chuck 12 is clamped into the tooth groove 402 again to prevent the bidirectional lead screw 9 from rotating freely. After the resistance wire winding roller is clamped, the outer end of the resistance wire is pulled to pass through the guide wheels 17 on both sides, and then the upper pressing wheel 20 is lifted to pass the resistance wire through the annular groove of the support wheel 18, and then the upper pressing wheel 20 is lowered to press the resistance wire, and the end of the resistance wire is connected to the winding roller of the resistance winding machine. During the resistance wire winding process, the screw can be rotated by adjusting the knob to slide the brake block, and the feeding tension coefficient of the resistance wire can be adjusted by the force of the brake block on the wheel shaft of the support wheel 18.

[0028] Embodiment 2

[0029] like Figure 1 , Figure 3 and Figure 4 As shown, a resistance wire clamping device proposed by the utility model, compared with the first embodiment, a plurality of limit frames 5 are arranged in a ring array on the hollow shaft 4, each limit frame 5 is respectively covered and arranged on the outside of the corresponding side receiving groove 401, and each clamping block 6 is respectively located in the corresponding side limit frame 5 and is slidably connected to the inner wall thereof; a through hole is arranged on the turntable B14, the hollow shaft 4 is slidably connected to the inner wall of the through hole, and a plurality of limit grooves 141 are arranged in a ring array around the axis of the turntable B14, each limit frame 5 is respectively located in the corresponding side limit groove 141, and each clamping block 6 is respectively located in the corresponding side limit groove 141 and is slidably connected to the inner wall thereof.

[0030] In this embodiment, the fitting structure of the limit frame 5 and the limit groove 141 can be used to prevent the turntable B14 and the limit groove 141 from sliding relative to each other after the blocking block 6 is completely received into the storage groove 401, thereby preventing the subsequent blocking block 6 from failing to be inserted into the limit groove 141 in time after being extended. While satisfying the sliding space of the blocking block 6, this structure also effectively ensures that the turntable B is always in contact with the end face of the resistance wire roll. This structure is different from the structure of a separate hole in the turntable B, and can prevent the resistance wire roll with a smaller outer diameter from slipping out of the through hole.

[0031] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A resistance wire clamping device, characterized in that: include A bottom plate (1), the bottom plate (1) is connected to a vertical plate (2), and the vertical plate (2) is rotatably connected to a rotating disk A (3); A hollow shaft (4), the hollow shaft (4) is connected to the turntable A (3), a plurality of receiving grooves (401) connected to the inside of the hollow shaft (4) are arranged in a ring array around the axis thereof, and a card block (6) is slidably connected in the receiving groove (401); A driving assembly, the driving assembly is connected to the hollow shaft (4) and drives the connected clamping blocks (6) to synchronously adjust the distance between the clamping blocks (6) and the axis of the hollow shaft (4); A movable plate (13), the movable plate (13) is slidably connected to the bottom plate (1), the movable plate (13) is rotatably connected to the turntable B (14), the hollow shaft (4) passes through the turntable B (14) and slides therewith, and a tensioning assembly A (16) is provided on the bottom plate (1) for pushing the movable plate (13) toward the turntable A (3); Guide wheels (17), both guide wheels (17) are rotatably connected to the vertical plate (2) to limit the lateral movement of the resistance wire; and a support wheel (18), the support wheel (18) being rotatably connected to the vertical plate (2), an upper pressing wheel (20) cooperating with the support wheel (18) being arranged on the vertical plate (2), and a tensioning assembly B for pushing the upper pressing wheel (20) downwards being arranged on the vertical plate (2).

2. A resistance wire clamping device according to claim 1, characterized in that: A plurality of limit frames (5) are arranged in a ring array on the hollow shaft (4), each limit frame (5) is respectively arranged to cover the outside of the corresponding side receiving groove (401), and each clamping block (6) is respectively located in the corresponding side limit frame (5) and is slidably connected to the inner wall thereof.

3. A resistance wire clamping device according to claim 2, characterized in that: A through hole is provided on the turntable B (14), the hollow shaft (4) is slidably connected to the inner wall of the through hole, and a plurality of limit grooves (141) are provided on the turntable B (14) in a ring array around its axis, each limit frame (5) is respectively located in a corresponding side limit groove (141), and each clamping block (6) is respectively located in a corresponding side limit groove (141) and slidably connected to the inner wall thereof.

4. A resistance wire clamping device according to claim 1, characterized in that: The driving assembly comprises a slider (7), a connecting rod (8) and a bidirectional screw rod (9); the two sliders (7) are symmetrically arranged in the hollow shaft (4) and are slidably connected to the inner wall thereof, and each connecting rod (8) is rotatably connected to the slider (7) and the clamping block (6) on the corresponding side; the bidirectional screw rod (9) is rotatably connected to the hollow shaft (4), and the sliders (7) on both sides are respectively spirally connected to the corresponding sides of the bidirectional screw rod (9).

5. A resistance wire clamping device according to claim 4, characterized in that: The bidirectional screw rod (9) is slidably connected to the latch pin (10), the latch pin (10) is rotationally connected to the hollow shaft (4), and the latch pin (10) is connected to the crank (11).

6. A resistance wire clamping device according to claim 5, characterized in that: The latch (10) is connected to the chuck (12), a tooth groove (402) is provided on the hollow shaft (4), and the chuck (12) and the tooth groove (402) are meshed in the vertical direction.

7. A resistance wire clamping device according to claim 1, characterized in that: A brake assembly (19) for adjusting the rotational resistance of the support wheel (18) is arranged on the vertical plate (2), and the brake assembly (19) comprises a knob, a screw rod and a brake block; the brake block is slidably connected to the vertical plate (2) and abuts against the wheel axle of the support wheel (18); the knob is connected to the screw rod, the screw rod is spirally connected to the vertical plate (2), and the screw rod is slidably connected to the brake block.

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