Cable extruder constant tension wire storage device

Abstract

The present invention relates to the field of wire storage devices, and in particular to a constant tension wire storage device for a cable extruder, comprising a cable winding device and a support frame, wherein the cable winding device is located on the support frame and connected to the support frame, and the cable winding device comprises a hollow rotating shaft; and further comprises an elastic protective component located inside the hollow rotating shaft. The present invention utilizes the elastic force of a telescopic spring so that when the cable is wound on a winding plate, the increased height value of the cable is equal to the contraction value of the four groups of winding plates, that is, the inner diameter of the cross-section circle formed by the cable and the four groups of winding plates remains unchanged, ensuring that the winding angle of the cable remains unchanged and the linear speed between the cables remains unchanged, thereby improving the production quality of the cable, and solving the problem that the existing constant tension wire storage device needs to be always powered on to ensure that the tension of the cable remains unchanged, thereby increasing the loss of the wire storage device.

Description

Technical Field

[0001] The present invention relates to the field of wire storage devices, in particular to a constant tension wire storage device for a cable extruder. Background Art

[0002] Cables are mainly composed of a certain number of cables arranged in a certain way to form a cable core and a sheath outside the cable core. After the cable is extruded, it is collected by a reel. As the reel winds the cable, the diameter of the reel gradually increases. Therefore, the angle between the cable and the reel becomes smaller and smaller, the linear speed between the cables increases, and the tension also increases accordingly. Excessive tension can easily cause the wire diameter to become thinner or even break, reducing the quality of cable production.

[0003] The existing solution is to add an electromagnetic device at the bottom of the reel. When the reel winds the cable and the diameter of the reel gradually increases, the power output of the electromagnetic device is reduced, causing the reel and the cable to move downward as a whole. This ensures that the angle between the cable and the reel remains unchanged, and the linear speed of the cable remains unchanged, thereby improving the production quality of the cable.

[0004] Therefore, it is necessary to invent a constant tension wire storage device for a cable extruder. Summary of the Invention

[0005] To this end, the present invention provides a constant tension wire storage device for a cable extruder. By utilizing the elastic force of a telescopic spring, when the cable is wound on a winding plate, the increased height value of the cable is equal to the contraction value of the four sets of winding plates, that is, the inner diameter of the cross-section circle formed by the cable and the four sets of winding plates remains unchanged, ensuring that the winding angle of the cable remains unchanged, and the linear speed between the cables remains unchanged, thereby improving the production quality of the cable, and solving the problem that the existing constant tension wire storage device needs to be powered on all the time to ensure that the tension of the cable remains unchanged, thereby increasing the loss of the wire storage device.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a constant tension wire storage device for a cable extruder, comprising a cable winding device and a support frame, wherein the cable winding device is located on the support frame and connected to the support frame, and the cable winding device comprises a hollow rotating shaft; and further comprising: an elastic protective component located inside the hollow rotating shaft;

[0007] The elastic protection component is provided with two groups, and the two groups of elastic protection components are centrally symmetrically arranged. The elastic protection component includes double side plates, and the top and bottom outer walls of the double side plates are fixedly installed with curved plates. The inner walls on both sides of the front ends of the double side plates are fixedly installed with the same blocking plate. A protruding area is formed between the top of the blocking plate and the curved plates at the top of the double side plates, and a protruding area is formed between the bottom of the blocking plate and the curved plates at the bottom of the double side plates. The protruding area on the left is connected to the protruding area on the right, and the outer wall of the curved plate at the top on the left is connected to the outer wall of the curved plate at the bottom on the right. The outer walls of the curved plates are fitted together, and a servo motor is fixedly installed at the center of the outer side of the same side of the two groups of side plates. A flywheel is rotatably connected to the center of the inner walls of the two side plates. The output shaft of the servo motor is fixedly connected to the flywheel. A slot is provided on the outer wall of one side of the flywheel, and a square card frame is rotatably connected to the outer wall of the other side of the flywheel. Both groups of the square card frames are located in the protruding area, and the square card frame on the left is engaged with the slot on the right. Reset springs are fixedly installed on the outer walls of both sides of the flywheel, and the ends of the two groups of reset springs are fixedly connected to the inner wall of the bottom of the curved plate.

[0008] Preferably, the outer wall of the hollow shaft is provided with three groups of sliding grooves arranged in a circumferential array, the outer wall of the hollow shaft is slidably connected to three groups of outer sliding rings, the inner wall of the hollow shaft is slidably connected to three groups of inner sliding columns, the inner walls of the three groups of outer sliding rings are respectively fixedly connected to the outer walls of the three groups of inner sliding columns, and are slidably connected to the inner walls of the three groups of sliding grooves, the inner walls at both ends of the hollow shaft are fixedly installed with connecting columns, the inner wall of the connecting column on the left side is fixedly installed with a cylinder, the cylinder output shaft is fixedly connected to the inner sliding column on the left side, and the inner wall of the connecting column on the right side is fixedly installed with a telescopic spring, the other end of the telescopic spring is connected to the inner wall of the connecting column on the left side. The inner sliding column on the right is fixedly connected, and the ends of the two groups of double-side plates and the arc-shaped plates are respectively fixedly connected to the inner walls of the two groups of inner sliding columns on the right side. The outer side walls of the two groups of outer sliding rings on the right side are rotatably connected with four groups of first connecting rods, and the four groups of first connecting rods are arranged in a circular array. The first connecting rods on the two groups of outer sliding rings are arranged in parallel, and the outer side wall of the outer sliding ring on the far left is rotatably connected with four groups of second connecting rods, and the four groups of second connecting rods are arranged in a circular array. The outer ends of the two groups of first connecting rods and second connecting rods located on the same plane are rotatably connected with the same hollow sliding steel, and the outer sides of the four groups of hollow sliding steels are fixedly installed with winding plates.

[0009] Preferably, double plate frames are fixedly mounted on the outer walls at both ends of the hollow rotating shaft, four groups of double track steels are fixedly mounted on the inner walls of the two groups of double plate frames, the four groups of double track steels on the two groups of double plate frames are arranged in a circular array, the inner walls of the double track steels are provided with inner sliding rails, the two ends of the four groups of hollow sliding steels are respectively slidably connected to the four groups of inner sliding rails, and the outer ends of the four groups of double track steels located on the same side are fixedly mounted with the same limiting ring.

[0010] Preferably, the outer side walls of the two groups of connecting columns are rotatably connected to the tops of both sides of the support frame respectively, a reduction motor is fixedly installed on the top of one side of the support frame, and the output shaft of the reduction motor is fixedly connected to the connecting column.

[0011] The beneficial effects of the present invention are:

[0012] 1. By selecting telescopic springs with different elastic coefficients based on the different cables to be wound, when the cable is wound around the four sets of winding plates, the added gravity of the four sets of winding plates is constant, and the inner diameter of the circle formed by the vertical section of the four sets of winding plates and the cable is also constant. According to Hooke's law F = kx, the increased gravity is substituted into F and the inner diameter into x to calculate the elastic coefficient k. Selecting a telescopic spring with this elastic coefficient k ensures that when the cable is wound around the four sets of winding plates, the inner diameter of the circle formed by the section of the cable and the four sets of winding plates remains unchanged, so that the cable winding angle on the four sets of winding plates remains unchanged;

[0013] 2. Before reeling in the cable, drive two sets of servo motors. The output shafts of the two servo motors drive the two sets of flywheels to rotate, so that the two sets of flywheels drive the four sets of reset springs to stretch. At this time, the flywheel on the right drives the square card frame to move backward, so that the square card frame on the right is stuck in the card slot of the left forward flywheel. At the same time, the square card frame on the left is pulled into the card slot of the right flywheel. When the square card frame is engaged with the card slot, stop driving the servo motor. Under the elastic force of the reset spring, the square card frame is always engaged with the card slot, thereby ensuring that the two sets of inner slides can move synchronously. After the closing is completed, the reduction motor is driven so that the output shaft of the reduction motor drives the connecting column to rotate, so that the cable winding device rotates as a whole, and the cable is wound onto the four sets of winding plates. Under the action of the gravity of the cable, the four sets of winding plates drive the two sets of outer sliding rings to move backward through the first connecting rod, so that the inner sliding column connected to the outer sliding ring compresses the telescopic spring. When the telescopic spring reaches a predetermined contraction value, the cylinder is driven so that the cylinder output shaft hinders the movement of the inner sliding column, ensuring that the cable on the winding plate will not compress the telescopic spring for the second time, thereby preventing the telescopic spring from being crushed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of the device provided by the present invention;

[0015] Figure 2 A schematic structural diagram of a cable winding device provided by the present invention;

[0016] Figure 3 A diagram showing the internal structure of the cable reeling device provided by the present invention;

[0017] Figure 4 A schematic diagram of the internal structure of the hollow rotating shaft provided by the present invention;

[0018] Figure 5A schematic structural diagram of the elastic protective assembly provided by the present invention;

[0019] Figure 6 A disassembled diagram of the elastic protective assembly provided by the present invention;

[0020] Figure 7 A schematic diagram of the internal structure of the elastic protection assembly when the servo motor provided by the present invention is in operation;

[0021] Figure 8 A schematic diagram of the internal structure of the elastic protection assembly provided by the present invention when the servo motor is not working;

[0022] Figure 9 A side view of the elastic protective assembly provided by the present invention.

[0023] In the figure: cable winding device 100, elastic protective component 110, double side plates 111, curved plate 112, blocking plate 113, extension area 114, extension area 115, servo motor 116, flywheel 117, card slot 118, square card frame 119, return spring 120, hollow rotating shaft 130, slide groove 131, outer sliding ring 132, inner sliding column 133, cylinder 134, telescopic spring 135, connecting column 136, first connecting rod 137, second connecting rod 138, hollow sliding steel 139, winding plate 140, double plate frame 150, double track steel 151, inner sliding rail 152, limit ring 153, support frame 200, reduction motor 210. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0025] Refer to the attached Figure 1-9 The constant tension wire storage device of the cable extruder provided by the present invention includes a cable winding device 100 and a support frame 200. The cable winding device 100 is located on the support frame 200 and is connected to the support frame 200. The cable winding device 100 includes a hollow rotating shaft 130 and further includes an elastic protective component 110 located inside the hollow rotating shaft 130.

[0026] There are two groups of elastic protection components 110, and the two groups of elastic protection components 110 are centrally symmetrically arranged. The elastic protection components 110 include double side plates 111, and the top and bottom outer walls of the double side plates 111 are fixedly installed with curved plates 112. The inner walls on both sides of the front ends of the double side plates 111 are fixedly installed with the same blocking plate 113. An extension area 114 is formed between the top of the blocking plate 113 and the curved plate 112 at the top of the double side plates 111, and a protruding area 114 is formed between the bottom of the blocking plate 113 and the curved plate 112 at the bottom of the double side plates 111. An extension area 115 is formed, and the extension area 114 on the left is connected to the extension area 115 on the right. The outer wall of the arc-shaped plate 112 on the top of the left side is fitted with the outer wall of the arc-shaped plate 112 on the bottom of the right side. A servo motor 116 is fixedly installed at the center of the outer side of the same side of the two sets of double-side plates 111. A flywheel 117 is rotatably connected to the center of the inner wall of the double-side plates 111. The output shaft of the servo motor 116 is fixedly connected to the flywheel 117. A slot 118 is opened on the outer wall of one side of the flywheel 117. The flywheel 117 is rotated and connected to the flywheel 117. The outer wall on the other side is rotatably connected to a square card frame 119. Both sets of square card frames 119 are located in the protruding area 114, and the square card frame 119 on the left is engaged with the card slot 118 on the right. Return springs 120 are fixedly installed on the outer walls on both sides of the flywheel 117. The ends of the two sets of return springs 120 are fixedly connected to the inner wall of the bottom of the arc plate 112. Specifically, before reeling the cable, the two sets of servo motors 116 are driven, and the output shafts of the two sets of servo motors 116 drive the two sets of flywheels 117 to rotate. The two sets of flywheels 117 drive the four sets of return springs 120 to stretch. At this time, the flywheel 117 on the right drives the square card frame 119 to move backward, so that the square card frame 119 on the right is clamped into the card slot 118 of the left forward flywheel 117. At the same time, the square card frame 119 on the left is pulled into the card slot 118 of the right flywheel 117. When the square card frame 119 is engaged with the card slot 118, the servo motor 116 is stopped. Under the elastic force of the return spring 120, the square card frame 119 is always engaged with the card slot 118.

[0027] Furthermore, the outer wall of the hollow shaft 130 is provided with three groups of sliding grooves 131 arranged in a circumferential array. The outer wall of the hollow shaft 130 is slidably connected with three groups of outer sliding rings 132. The inner wall of the hollow shaft 130 is slidably connected with three groups of inner sliding columns 133. The inner walls of the three groups of outer sliding rings 132 are fixedly connected to the outer walls of the three groups of inner sliding columns 133 respectively, and are slidably connected to the inner walls of the three groups of sliding grooves 131. The inner walls of both ends of the hollow shaft 130 are fixedly installed with connecting columns 136. The inner wall of the connecting column 136 on the left is fixed. A cylinder 134 is installed, the output shaft of the cylinder 134 is fixedly connected to the inner sliding column 133 on the left side, a telescopic spring 135 is fixedly installed on the inner wall of the connecting column 136 on the right side, the other end of the telescopic spring 135 is fixedly connected to the inner sliding column 133 on the far right side, the ends of the two sets of double-side plates 111 and the arc-shaped plate 112 are respectively fixedly connected to the inner walls of the two sets of inner sliding columns 133 on the right side, and the outer side walls of the two sets of outer sliding rings 132 on the right side are rotatably connected to four sets of first connecting rods 137. The four sets of first connecting rods 137 The first connecting rods 137 on the two sets of outer sliding rings 132 are arranged in parallel. The outer wall of the outer sliding ring 132 on the far left is rotatably connected to four sets of second connecting rods 138. The four sets of second connecting rods 138 are arranged in a circular array. The outer ends of the two sets of first connecting rods 137 and the second connecting rods 138 on the same plane are rotatably connected to the same hollow sliding steel 139. The outer walls of the four sets of hollow sliding steels 139 are fixedly installed with winding plates 140. Specifically, when the cable is wound around the four sets of winding plates 140, The added gravity of the four sets of winding plates 140 is constant, and the inner diameter of the circle formed by the vertical section of the four sets of winding plates 140 and the cable is also constant. According to Hooke's law F=kx, the added gravity is substituted into F and the inner diameter is substituted into x to calculate the elastic coefficient k. Selecting the telescopic spring 135 with this elastic coefficient k ensures that when the cable is wound on the four sets of winding plates 140, the inner diameter of the circle formed by the section of the cable and the four sets of winding plates 140 remains unchanged, so that the cable winding angle on the four sets of winding plates 140 remains unchanged.

[0028] Furthermore, double plate frames 150 are fixedly installed on the outer walls of both ends of the hollow rotating shaft 130, and four groups of double track steels 151 are fixedly installed on the inner walls of the two groups of double plate frames 150. The four groups of double track steels 151 on the two groups of double plate frames 150 are arranged in a circular array, and the inner walls of the double track steels 151 are provided with inner sliding rails 152. The two ends of the four groups of hollow sliding steels 139 are respectively slidably connected to the four groups of inner sliding rails 152, and the outer ends of the four groups of double track steels 151 located on the same side are fixedly installed with the same limiting ring 153.

[0029] Furthermore, the outer walls of the two groups of connecting columns 136 are rotatably connected to the tops of both sides of the support frame 200 respectively. The support frame 200 provides support for the connecting columns 136. A reduction motor 210 is fixedly installed on the top of one side of the support frame 200. The output shaft of the reduction motor 210 is fixedly connected to the connecting columns 136. Specifically, the reduction motor 210 is driven so that the output shaft of the reduction motor 210 drives the connecting columns 136 to rotate, so that the cable winding device 100 rotates as a whole, so that the cable is wound onto the four groups of winding plates 140. Under the action of the gravity of the cable, the cable is wound onto the four groups of winding plates 140. Next, the four groups of winding plates 140 drive the two groups of outer sliding rings 132 to move backward through the first connecting rod 137, and the hollow sliding steel 139 slides in the inner sliding rail 152 of the double-track steel 151, so that the inner sliding column 133 connected to the outer sliding ring 132 compresses the telescopic spring 135. When the telescopic spring 135 is wound around and reaches a predetermined contraction value, the cylinder 134 is driven to make the output shaft of the cylinder 134 hinder the movement of the inner sliding column 133, ensuring that the cable on the winding plate 140 will not compress the telescopic spring 135 for the second time, thereby preventing the telescopic spring 135 from being crushed.

[0030] The use process of the present invention is as follows: those skilled in the art select telescopic springs 135 with different elastic coefficients according to the different cables to be wound (when the cables are wound around the four sets of winding plates 140 for one circle, the added gravity of the four sets of winding plates 140 is constant, and the inner diameter of the circle formed by the four sets of winding plates 140 and the vertical section of the cables is also constant. According to Hooke's law F=kx, the added gravity is substituted into F and the inner diameter is substituted into x to calculate the elastic coefficient k. The telescopic spring 135 with the elastic coefficient k is selected. 35, which can ensure that when the cable is wound on the four sets of winding plates 140, the inner diameter of the cross-section formed by the cable and the four sets of winding plates 140 remains unchanged, so that the cable winding angle on the four sets of winding plates 140 remains unchanged). Before winding the cable, the two sets of servo motors 116 are driven, and the output shafts of the two sets of servo motors 116 drive the two sets of flywheels 117 to rotate, so that the two sets of flywheels 117 drive the four sets of return springs 120 to stretch. At this time, the flywheel 117 on the right side drives the square card frame 119 to move backward, so that the square card frame 119 on the right side The cable reel 100 is inserted into the slot 118 of the left forward flywheel 117, and the square card frame 119 on the left is pulled into the slot 118 of the right flywheel 117. When the square card frame 119 is engaged with the slot 118, the servo motor 116 is stopped. Under the elastic force of the return spring 120, the square card frame 119 and the slot 118 are always engaged. After the engagement is completed, the reduction motor 210 is driven to make the output shaft of the reduction motor 210 drive the connecting column 136 to rotate, so that the cable reel 100 is rotated as a whole, so that the cable reel 100 is rotated. The cable is wound onto the four groups of winding plates 140. Under the action of the gravity of the cable, the four groups of winding plates 140 drive the two groups of outer sliding rings 132 to move backward through the first connecting rod 137, so that the inner sliding column 133 connected to the outer sliding ring 132 compresses the telescopic spring 135. When the telescopic spring 135 is wound to a predetermined contraction value, the cylinder 134 is driven so that the output shaft of the cylinder 134 hinders the movement of the inner sliding column 133, ensuring that the cable on the winding plate 140 does not compress the telescopic spring 135 for the second time, thereby preventing the telescopic spring 135 from being crushed.

[0031] The above description is merely a preferred embodiment of the present invention. Anyone skilled in the art may utilize the above-described technical solutions to modify the present invention or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the present invention falls within the scope of protection claimed by the present invention.

Claims

1. A constant tension wire storage device for a cable extruder, comprising a cable winding device (100) and a support frame (200), wherein the cable winding device (100) is located on the support frame (200) and connected to the support frame (200), and is characterized in that: The cable winding device (100) comprises a hollow rotating shaft (130); and further comprises an elastic protective component (110) located inside the hollow rotating shaft (130); The elastic protection components (110) are provided with two groups, and the two groups of elastic protection components (110) are centrally symmetrically arranged. The elastic protection components (110) include double side plates (111), and the top and bottom outer walls of the double side plates (111) are fixedly mounted with arc plates (112). The inner walls on both sides of the front ends of the double side plates (111) are fixedly mounted with the same blocking plate (113). A protruding area (114) is formed between the top of the blocking plate (113) and the arc plates (112) at the top of the double side plates (111), and a protruding area (115) is formed between the bottom of the blocking plate (113) and the arc plates (112) at the bottom of the double side plates (111). The protruding area (114) on the left side is connected to the protruding area (115) on the right side, and the outer wall of the arc plate (112) on the left side is connected to the outer wall of the arc plate (112) on the right side. The outer wall of the arc-shaped plate (112) is fitted, and a servo motor (116) is fixedly installed at the center of the outer side of the same side of the two groups of double-side plates (111). A flywheel (117) is rotatably connected to the center of the inner wall of the double-side plates (111). The output shaft of the servo motor (116) is fixedly connected to the flywheel (117). A slot (118) is provided on the outer wall of one side of the flywheel (117). A square card frame (119) is rotatably connected to the outer wall of the other side of the flywheel (117). Both groups of the square card frames (119) are located in the extension area (114), and the square card frame (119) located on the left is engaged with the slot (118) located on the right. Return springs (120) are fixedly installed on the outer walls of both sides of the flywheel (117), and the ends of the two groups of the return springs (120) are fixedly connected to the inner wall of the bottom of the arc-shaped plate (112). The outer wall of the hollow shaft (130) is provided with three groups of slide grooves (131) arranged in a circumferential array. The outer wall of the hollow shaft (130) is slidably connected to three groups of outer sliding rings (132). The inner wall of the hollow shaft (130) is slidably connected to three groups of inner sliding columns (133). The inner walls of the three groups of outer sliding rings (132) are respectively fixedly connected to the outer walls of the three groups of inner sliding columns (133) and are slidably connected to the inner walls of the three groups of slide grooves (131). Connecting columns (136) are fixedly installed on the inner walls of both ends of the hollow shaft (130). A cylinder (134) is fixedly installed on the inner wall of the connecting column (136) on the left side. The output shaft of the cylinder (134) is fixedly connected to the inner sliding column (133) on the left side. A telescopic spring (135) is fixedly installed on the inner wall of the connecting column (136) on the right side. The other end of the telescopic spring (135) is fixedly connected to the inner wall of the connecting column (136) on the most The inner sliding column (133) on the right side is fixedly connected, and the ends of the two groups of double-side plates (111) and the arc-shaped plates (112) are respectively fixedly connected to the inner walls of the two groups of inner sliding columns (133) on the right side. The outer walls of the two groups of outer sliding rings (132) on the right side are rotatably connected with four groups of first connecting rods (137), and the four groups of first connecting rods (137) are arranged in a circular array. The first connecting rods (137) on the two groups of outer sliding rings (132) are arranged in parallel. The outer wall of the outer sliding ring (132) on the leftmost side is rotatably connected with four groups of second connecting rods (138), and the four groups of second connecting rods (138) are arranged in a circular array. The outer ends of the two groups of first connecting rods (137) and second connecting rods (138) located on the same plane are rotatably connected with the same hollow sliding steel (139), and the outer walls of the four groups of hollow sliding steels (139) are fixedly installed with a winding plate (140).

2. The constant tension wire storage device for a cable extruder according to claim 1, characterized in that: The outer walls of both ends of the hollow rotating shaft (130) are fixedly mounted with double plate frames (150), and the inner walls of the two groups of double plate frames (150) are fixedly mounted with four groups of double track steels (151). The four groups of double track steels (151) on the two groups of double plate frames (150) are arranged in a circular array, and the inner walls of the double track steels (151) are provided with inner slide rails (152). The two ends of the four groups of hollow slide steels (139) are respectively slidably connected to the four groups of inner slide rails (152), and the outer ends of the four groups of double track steels (151) located on the same side are fixedly mounted with the same limiting ring (153).

3. The constant tension wire storage device for a cable extruder according to claim 1, characterized in that: The outer side walls of the two groups of connecting columns (136) are rotatably connected to the tops of both sides of the support frame (200), and a reduction motor (210) is fixedly installed on the top of one side of the support frame (200), and the output shaft of the reduction motor (210) is fixedly connected to the connecting column (136).

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