Tensioning device of rubber thread machine

Abstract

The utility model provides a rubber thread machine tensioning device which is characterized in that a rubber thread frame is arranged on one side of a rubber thread machine, a metal wire coil is arranged on the rubber thread frame, and a tensioning device is arranged on the rubber thread frame; the tensioning device comprises a row of movable tensioning wheels and a row of elastic tensioning wheels, the movable tensioning wheels correspond to the elastic tensioning wheels in a one-to-one mode, the elastic tensioning wheels are arranged on the side close to the rubber thread machine, lifting devices installed on the rubber thread frame are arranged on the lower sides of the movable tensioning wheels, and elastic rods are arranged between the elastic tensioning wheels and the rubber thread frame. And a pressure sensing switch is arranged on the elastic tensioning wheel. The tensioning device has the advantages that the movable tensioning wheel driven by the lifting device is matched with the elastic tensioning wheel with the pressure sensing switch, and the technical problem that a tensioning device of an existing rubber thread machine is prone to damage is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable production, in particular to a rubber wire machine tensioning device. Background Art

[0002] The existing technology of rubber wire machine mainly includes the core parts such as metal wire unwinding device, melt extrusion unit, composite extrusion die head and precision cooling system. First, the metal wire is unwound in an orderly manner by the special unwinding device, and is accurately guided into the extrusion die head through the tensioning device and the guiding device.

[0003] The actual working process is the twisting process. When the pulling force during twisting is too large, the metal wire is easily broken or the tensioning device is damaged. Moreover, because the metal wire has excellent strength and is not easily broken, the tensioning device is easily damaged. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a tensioning device for a rubber wire machine, which solves the technical problem that the tensioning device of the prior rubber wire machine is easily damaged.

[0005] According to an embodiment of the utility model, a tensioning device for a rubber wire machine is provided, a rubber wire rack is provided on one side of the rubber wire machine, a metal wire roll is provided on the rubber wire rack, and a tensioning device is provided on the rubber wire rack;

[0006] The tensioning device includes a row of movable tensioning wheels and a row of elastic tensioning wheels. The movable tensioning wheels correspond to the elastic tensioning wheels one by one, and the elastic tensioning wheels are arranged on the side close to the rubber wire machine. A lifting device installed on the rubber wire frame is provided on the lower side of the movable tensioning wheel. An elastic rod is provided between the elastic tensioning wheel and the rubber wire frame, and a pressure-sensitive switch is provided on the elastic tensioning wheel.

[0007] The technical principle of the utility model is as follows: after the metal wire roll is led out, it enters the upper side of the movable tensioning wheel, then passes through the lower side of the elastic tensioning wheel, and is finally pulled to the rubber wire machine for twisting, wherein the elastic rod provides a certain tensioning force during daily use; when the pulling force of the metal wire is too large, the pressure-sensitive switch can sense that the pulling force is too large, and the lifting device drives the movable tensioning wheel to move downward, thereby reducing the tensioning force to ensure that the movable tensioning wheel and the elastic tensioning wheel are not damaged by the excessive pulling force.

[0008] Compared with the prior art, the utility model has the following beneficial effects: the movable tensioning wheel driven by the lifting device cooperates with the elastic tensioning wheel with a pressure-sensitive switch, which solves the technical problem that the tensioning device of the existing rubber wire machine is easily damaged.

[0009] Furthermore, the movable tensioning wheel and the elastic tensioning wheel both include an outer hub and a rotating ring, the outer hub is connected to an elastic rod or a lifting device, an annular groove is provided on the cylindrical surface of the outer hub, the rotating ring is sleeved on the annular groove, and rollers are evenly distributed between the rotating ring and the annular groove.

[0010] Furthermore, the pressure-sensitive switch is arranged at the bottom of the annular groove of the elastic tension wheel, and the roller is made of rubber.

[0011] Ensure that the pressure-sensitive switch does not come into direct contact with the metal wire to avoid rapid wear at the front. A rubber roller is used to contact the pressure-sensitive switch, which also serves to protect the pressure-sensitive switch.

[0012] Furthermore, a semicircular groove is provided outside the rotating ring.

[0013] Furthermore, the lifting device is a lifting electric push rod, a limit switch is provided on the upper side of the movable tensioning wheel, and the pressure-sensitive switch and the limit switch are both connected to control the lifting device.

[0014] Furthermore, the pressure-sensitive switch includes a normally open port and a normally closed port. The normally closed port is connected in series with the limit switch and is connected to control the forward rotation of the lifting device, and the normally open port is connected to control the reverse rotation of the lifting device.

[0015] Furthermore, a pressure switch is provided on the movable tensioning wheel, the wire roll is transmission-connected to a lead-out motor, and the pressure switch controls the rotation of the lead-out motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the position of the rubber wire machine in Example 1 of the utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the tensioning device of Example 1 of the utility model.

[0018] Figure 3 It is a top view schematic diagram of the tensioning device of Example 1 of the utility model.

[0019] Figure 4 This is a main sectional view of the elastic tensioning wheel of Example 1 of the utility model.

[0020] Figure 5 This is a side sectional view of the elastic tensioning wheel of Example 1 of the utility model.

[0021] Figure 6 This is a control circuit diagram of the lifting device of Example 1 of the utility model.

[0022] Figure 7 This is a main sectional view of the movable tensioning wheel in Example 2 of the utility model.

[0023] Figure 8This is a schematic diagram of the lead-out motor structure of Example 2 of the utility model.

[0024] In the above drawings: 100, rubber wire machine; 110, rubber wire rack; 111, metal wire roll; 112, tensioning device; 120, lead-out motor; 200, elastic tensioning wheel; 210, elastic rod; 220, pressure-sensitive switch; 221, normally open port; 222, normally closed port; 230, outer hub; 231, annular groove; 232, roller; 240, rotating ring; 241, semicircular groove; 300, movable tensioning wheel; 310, lifting device; 320, limit switch; 330, pressure switch. DETAILED DESCRIPTION

[0025] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Example 1

[0027] like Figure 1 The rubber wire machine tensioning device shown in the figure has a rubber wire rack 110 disposed on one side of the rubber wire machine 100 , a metal wire roll 111 disposed on the rubber wire rack 110 , and a tensioning device 112 disposed on the rubber wire rack 110 .

[0028] like Figure 1-3 As shown, the tensioning device 112 includes a row of movable tensioning wheels 300 and a row of elastic tensioning wheels 200. The movable tensioning wheels 300 correspond to the elastic tensioning wheels 200 one by one, and the elastic tensioning wheels 200 are arranged on the side close to the rubber wire machine 100. The lower side of the movable tensioning wheel 300 is provided with a lifting device 310 installed on the rubber wire frame 110, so that the movable tensioning wheel 300 can move in the vertical direction. An elastic rod 210 is provided between the elastic tensioning wheel 200 and the rubber wire frame 110. Specifically, the elastic rod 210 can be a structure that can be elastically deformed by itself; or it can be hingedly connected to the rubber wire frame 110, and a torsion spring is provided at the hinge; a pressure-sensitive switch 220 is provided on the elastic tensioning wheel 200 for controlling the downward movement of the tensioning device 112.

[0029] like Figure 4-5 As shown, the movable tensioning wheel 300 and the elastic tensioning wheel 200 both include an outer hub 230 and a rotating ring 240, wherein the outer hub 230 is connected to the elastic rod 210 or the lifting device 310, an annular groove 231 is provided on the cylindrical surface of the outer hub 230, and the rotating ring 240 is sleeved on the annular groove 231, and rollers 232 are evenly distributed between the rotating ring 240 and the annular groove 231, thereby converting the sliding friction between the rotating ring 240 and the annular groove 231 into rolling friction.

[0030] Specifically, the pressure-sensitive switch 220 is disposed at the bottom of the annular groove 231 of the elastic tension wheel 200 , and the pressure-sensitive switch 220 only needs to be disposed at a position where the metal wire passes. The roller 232 is made of rubber material and is used to protect the pressure-sensitive switch 220 .

[0031] like Figure 5 As shown, a semicircular groove 241 is provided outside the rotating ring 240 to limit the position of the metal wire.

[0032] like Figure 2 , 6 As shown, the lifting device 310 is a lifting electric push rod, and a limit switch 320 is provided on the upper side of the movable tensioning wheel 300. The pressure-sensitive switch 220 and the limit switch 320 are both connected to control the lifting device 310; specifically, the pressure-sensitive switch 220 includes a normally open port 221 and a normally closed port 222. The normally closed port 222 is connected in series with the limit switch 320 and connected to control the forward rotation of the lifting device 310, and the normally open port 221 is connected to control the reverse rotation of the lifting device 310, thereby realizing the rising and falling control of the lifting device 310.

[0033] In actual use, when the pulling force is too large, the pressure-sensitive switch 220 is triggered, the normally open port 221 is connected, and the normally closed port 222 is disconnected, so that the lifting device 310 reverses and controls the movable tensioning wheel 300 to descend to reduce the tensioning force; when the pulling force returns to normal, the limit switch 320 returns to its original state, so that the lifting device 310 rotates forward and controls the movable tensioning wheel 300 to rise until it contacts the limit switch 320, and the limit switch 320 disconnects the lifting device 310, so that the lifting device 310 stops reversing.

[0034] Example 2

[0035] like Figure 7-8 As shown, the difference between this embodiment and embodiment 1 is that a pressure switch 330 is provided on the movable tensioning wheel 300, and the wire roll 111 is transmission-connected to the lead-out motor 120, and the pressure switch 330 controls the rotation of the lead-out motor 120. When the pulling force is too large, the pressure switch 330 is triggered to turn on the lead-out motor 120, and the lead-out motor 120 drives the wire roll 111 to rotate, and actively leads out the wire to reduce the pulling force.

[0036] The pressure switch 330 and the pressure-sensitive switch 220 in the embodiments 1-2 can both adopt FSR402-406 type thin-film pressure-sensitive switches.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tensioning device for a rubber wire machine, wherein a rubber wire rack is provided on one side of the rubber wire machine, and a metal wire roll is provided on the rubber wire rack, characterized in that: The rubber wire rack is provided with a tensioning device; The tensioning device includes a row of movable tensioning wheels and a row of elastic tensioning wheels. The movable tensioning wheels correspond to the elastic tensioning wheels one by one, and the elastic tensioning wheels are arranged on the side close to the rubber wire machine. A lifting device installed on the rubber wire frame is provided on the lower side of the movable tensioning wheel. An elastic rod is provided between the elastic tensioning wheel and the rubber wire frame, and a pressure-sensitive switch is provided on the elastic tensioning wheel.

2. A rubber wire machine tensioning device as claimed in claim 1, characterized in that: The movable tension wheel and the elastic tension wheel both include an outer hub and a rotating ring. The outer hub is connected to an elastic rod or a lifting device. An annular groove is provided on the cylindrical surface of the outer hub. The rotating ring is sleeved on the annular groove. Rollers are evenly distributed between the rotating ring and the annular groove.

3. A rubber wire machine tensioning device as claimed in claim 2, characterized in that: The pressure-sensitive switch is arranged at the bottom of the annular groove of the elastic tension wheel, and the roller is made of rubber.

4. A rubber wire machine tensioning device as claimed in claim 2, characterized in that: A semicircular groove is arranged outside the rotating ring.

5. A rubber wire machine tensioning device as claimed in claim 1, characterized in that: The lifting device is a lifting electric push rod, a limit switch is arranged on the upper side of the movable tensioning wheel, and the pressure-sensitive switch and the limit switch are both connected to control the lifting device.

6. A rubber wire machine tensioning device as claimed in claim 5, characterized in that: The pressure-sensitive switch comprises a normally open port and a normally closed port. The normally closed port is connected in series with the limit switch and is connected to control the forward rotation of the lifting device, and the normally open port is connected to control the reverse rotation of the lifting device.

7. A rubber wire machine tensioning device as claimed in claim 6, characterized in that: The movable tensioning wheel is provided with a pressure switch, the wire roll is transmission-connected with a lead-out motor, and the pressure switch controls the rotation of the lead-out motor.

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