A co-extruder quick color changing device and working method thereof

Abstract

The invention relates to a co-extruder quick color-changing device and a working method thereof. The co-extruder quick color-changing device comprises a mobile base, a head mounting frame, an adjustment box, a transmission gear, and a connecting gear. The head mounting frame is fixedly arranged on the mobile base, the adjustment box is slidably matched with the joint mounting frame, a transmission-matching power device and a rack are arranged in the adjustment box, a rotatable transmission gear is arranged on the adjustment box, an outer wall of the transmission gear is provided with a transmission external spline meshing with the rack, one end of the connecting gear is provided with a mold core external spline meshing with a mold core internal spline, the other end of the connecting gear is provided with a connecting external spline, and the inner wall of the transmission gear is provided with a transmission internal spline transmission-matching with the connecting external spline of the connecting gear.

Description

Technical Field

[0001] The invention relates to the technical field of cable processing equipment, in particular to a quick color changing device for a co-extruder and a working method thereof. Background Art

[0002] According to the provisions of GB6995.4~GB6995.5 (Identification Marks for Wires and Cables): For the insulated cores of electrical equipment wires and cables, cables with less than five cores should generally be identified by color, and the insulation of the cable cores should be colored with colored insulating materials or colored on the surface of the insulation by other suitable methods; for cross-linked polyethylene insulated or polyethylene insulated or polyvinyl chloride insulated power cables, the insulated cores should be identified by color, and polyvinyl chloride insulated cables should generally use colored insulating materials. Insulated cores that are not easy to color are allowed to use marking yarn or marking ribbons. It can be seen that insulating materials of different colors or different materials need to act together on the wire core. In the process of cable production, it is the extruder and co-extruder that realize the above functions. Multiple extruders heat and melt the insulating materials and introduce them into the same co-extruder. The co-extruder head realizes injection molding. In order to keep the insulating material in a molten state, the co-extruder head needs to be maintained at a certain temperature. There are multiple flow channels in the co-extruder head for passing different insulating materials. When producing cables of different colors, it is necessary to switch between different flow channels. If the machine is stopped and the temperature is waited for to drop before switching, it will affect the production efficiency. Therefore, it is generally achieved by setting a mold core with an internal spline on the head, and switching between different injection molding modes by rotating the internal spline. Taking the three-layer co-extrusion / double-layer + injection strip head as an example, you can switch between the injection strip color and the inner layer color, or switch between the outer layer full package and the inner layer color. How to drive the rotation of the mold core is a technical problem that technicians in this field urgently need to solve. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a co-extruder quick color changing device with a simple structure and convenient cable speed adjustment, and a working method thereof.

[0004] In order to solve the above technical problems, the co-extruder rapid color changing device provided by the present invention comprises a movable base, a head mounting frame, an adjusting box, a transmission gear, and a connecting gear. The head mounting frame is fixedly arranged on the movable base, the adjusting box is slidably matched with the joint mounting frame, a transmission matching power device and a rack are arranged in the adjusting box, and a rotatable transmission gear is arranged on the adjusting box, the outer wall of the transmission gear is provided with a transmission external spline meshing with the rack, one end of the connecting gear is provided with a core external spline meshing with the core internal spline, the other end of the connecting gear is provided with a connecting external spline, and the inner wall of the transmission gear is provided with a transmission internal spline transmission-matched with the connecting external spline of the connecting gear. When in use, the core external spline of the connecting gear extends into the core and meshes with the core internal spline, the movable base is moved until the connecting gear extends into the transmission gear, so that the transmission internal spline meshes with the connecting external spline, the rack is driven to rise and fall by the power device, the transmission gear is driven to rotate by the rack, and the transmission gear drives the core to rotate via the connecting gear to realize color changing.

[0005] Furthermore, the head mounting frame includes a horizontal plate and a vertical plate that are fixedly connected. The horizontal plate is fixedly connected to the movable base, and the bottom end of the vertical plate is fixedly connected to the horizontal plate. A plurality of guide slide bars parallel to the horizontal plate are fixedly arranged on the vertical plate, and the adjustment box body is slidably matched with the guide slide bars so that the adjustment box body can slide along the guide slide bars.

[0006] Furthermore, a translation cylinder is arranged on the adjusting box, and a telescopic rod of the translation cylinder extends out of the adjusting box and abuts against the vertical plate, so that the translation cylinder can drive the adjusting box to translate along the guide slide rod.

[0007] Furthermore, the power device is a lifting cylinder, the top end of the lifting cylinder is fixedly connected to the bottom end of the rack, an oil pump is arranged on the movable base, and the oil pump supplies oil to the lifting cylinder through an oil pipe.

[0008] Furthermore, handles are provided on both sides of the adjustment box.

[0009] Furthermore, a plurality of universal wheels are arranged at the bottom end of the mobile base to facilitate the movement of the mobile base.

[0010] Furthermore, the quick color-changing device of the co-extruder also includes an inverted U-shaped handrail, and connecting piles are arranged on both sides of the end of the movable base, and the two ends of the bottom of the handrail are plugged into and matched with the connecting piles, so that the handrail can be detachably arranged on the movable base, which is convenient for moving the movable base.

[0011] Furthermore, at least one rotatable guide wheel is provided at the bottom end of the movable base, and the bottom end of the guide wheel is higher than the bottom end of the universal wheel. At least one of the guide wheels is provided with an inner groove along the circumferential direction. When in use, a guide rail is provided in front of the mold core. When the movable base moves on the ground, the universal wheel contacts the ground. When the movable base moves in front of the mold core, the guide wheel with the inner groove is guided by the guide rail, so as to facilitate the alignment of the transmission gear with the connecting gear on the mold core.

[0012] The working method of the above-mentioned co-extruder rapid color changing device comprises the following steps:

[0013] A. Extend the outer spline of the core of the connecting gear into the core and mesh with the inner spline of the core, so that the connecting gear and the core of the co-extruder are matched;

[0014] B. Set a guide rail in front of the co-extruder, move the mobile base until the guide wheel with an inner groove slides with the guide rail, move the mobile base and the adjustment box until the transmission gear is aligned with the connecting gear, push the adjustment box, so that the connecting external spline of the connecting gear is meshed with the transmission internal spline of the transmission gear;

[0015] C. Start the oil pump to make the lifting cylinder drive the rack to rise, the rack drives the transmission gear to rotate, the transmission gear drives the connecting gear to rotate, the connecting gear drives the mold core to rotate, and the color change is completed;

[0016] D. Stop the oil pump to stop the transmission gear and the connecting gear from rotating; start the translation cylinder, which drives the adjustment box away from the vertical plate, and the transmission gear and the connecting gear are disengaged;

[0017] E. Start the oil pump so that the lifting cylinder drives the rack down and resets the rack.

[0018] Technical effects of the invention: (1) Compared with the prior art, the co-extruder quick color-changing device of the present invention adopts a transmission gear with an external transmission spline and an internal transmission spline to cooperate with the connecting gear. The mold core is driven to rotate by the rotation of the transmission gear, which can easily realize the flow channel replacement and rapid color change; (2) The adjustment box is slid through the guide slide rod, and a translation cylinder is provided to facilitate the separation of the transmission gear and the connecting gear. Since the mold core is in a high temperature state, the connecting gear expands due to heat after contacting it, and the meshing with the transmission gear is tight and not easy to disengage. The provision of the translation cylinder saves manpower and improves efficiency; (3) The oil cylinder and oil pump are used to drive the rack to rise and fall, and the power is stable and easy to operate; (4) An inner groove is provided on the guide wheel to cooperate with the guide rail on the ground, so that the transmission gear and the connecting gear can be easily aligned, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of the rapid color changing device of the co-extruder of the present invention;

[0021] Figure 2 It is a side view of the co-extruder quick color changing device of the present invention after being equipped with a handrail;

[0022] Figure 3 It is a schematic diagram of the interior of the adjustment box;

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure after the adjustment box and the head mounting frame are assembled;

[0024] Figure 5 It is a structural diagram of the transmission gear.

[0025] In the figure:

[0026] Mobile base 10, universal wheel 11, guide wheel 12, connecting pile 13, handrail 14,

[0027] Head mounting frame 20, vertical plate 21, horizontal plate 22, guide slide bar 23, translation cylinder 24,

[0028] Lifting cylinder 30, oil pump 31, oil pipe 32, rack 33,

[0029] Adjustment box 40, handle 41,

[0030] Transmission gear 50 , transmission external spline 51 , transmission internal spline 52 . DETAILED DESCRIPTION Example

[0031] like Figures 1 to 5 As shown, the co-extruder quick color changing device of this embodiment includes a mobile base 10, a head mounting frame 20, an adjustment box 40, a transmission gear 50, and a connecting gear (not shown in the figure). Four universal wheels 11 are arranged at the bottom end of the mobile base 10, and one of the universal wheels 11 is provided with a brake device to facilitate the movement of the mobile base 10; two rotatable guide wheels 12 are also arranged at the bottom end of the mobile base 10, and the bottom end of the guide wheel 12 is higher than the bottom end of the universal wheel 11, and one of the guide wheels 12 is provided with an inner groove along the circumferential direction. When in use, a guide rail is arranged in front of the mold core, and when the mobile base 10 moves on the ground, the universal wheel 11 contacts the ground, and when the mobile base 10 moves to the front of the mold core, the guide wheel 12 with the inner groove moves on the guide rail and is guided by the guide rail.

[0032] The co-extruder quick color-changing device also includes an inverted U-shaped handrail 14. Connecting plugs 13 are arranged on both sides of the end of the mobile base 10. The two ends of the bottom of the handrail 14 are plugged into the connecting plugs 13 so that the handrail 14 can be detachably arranged on the mobile base 10, which is convenient for moving the mobile base 10.

[0033] The head mounting frame 20 includes a transverse plate 22 and a vertical plate 21 which are fixedly connected. The transverse plate 22 is fixedly connected to the movable base 10 via a screw. The bottom end of the vertical plate 21 is fixedly connected to the transverse plate 22. Three guide slide bars 23 parallel to the transverse plate 22 are fixedly arranged on the vertical plate 21. The three guide slide bars 23 are arranged side by side. One end of the three guide slide bars 23 is fixedly connected to the vertical plate 21. The other ends of the three guide slide bars 23 are fixed by the same connecting rod to enhance the stability of the guide slide bars 23. The guide slide bars 23 pass through the adjustment box 40 so that the adjustment box 40 and the guide slide bars 23 are slidably matched, that is, the adjustment box 40 can slide along the guide slide bars 23.

[0034] A power device and a rack 33 for transmission cooperation are arranged in the adjusting box 40, and a rotatable transmission gear 50 is arranged on the adjusting box 40. Both ends of the transmission gear 50 are rotatably cooperated with the two side walls of the adjusting box 40 through bearings. The outer wall of the transmission gear 50 is provided with a transmission external spline 51 meshing with the rack 33, one end of the connecting gear is provided with a core external spline meshing with the core internal spline, and the other end of the connecting gear is provided with a connecting external spline. The inner wall of the transmission gear 50 is provided with a transmission internal spline 52 for transmission cooperation with the connecting external spline of the connecting gear. When in use, the core external spline of the connecting gear extends into the core and meshes with the core internal spline, and the movable base 10 is moved until the connecting gear extends into the transmission gear 50, so that the transmission internal spline 52 meshes with the connecting external spline, and the rack 33 is driven to rise and fall by the power device, and the transmission gear 50 is driven to rotate by the rack 33, and the transmission gear 50 drives the core to rotate via the connecting gear to realize color changing.

[0035] Preferably, the power device is a lifting cylinder 30, the top of which is fixedly connected to the bottom of the rack 33, and an oil pump 31 is arranged on the movable base 10, which supplies oil to the lifting cylinder 30 through an oil pipe 32; a translation cylinder 24 is arranged on the adjusting box 40, and a telescopic rod of the translation cylinder 24 extends out of the adjusting box 40 and abuts against the vertical plate 21, so that the translation cylinder 24 can drive the adjusting box 40 to translate along the guide slide bar 23; handles 41 are arranged on both sides of the adjusting box 40 to facilitate pushing the adjusting box 40 to move. Example

[0036] The working method of the above-mentioned co-extruder rapid color changing device comprises the following steps:

[0037] A. Extend the outer spline of the core of the connecting gear into the core and mesh with the inner spline of the core, so that the connecting gear and the core of the co-extruder are matched;

[0038] B. Set a guide rail in front of the co-extruder, move the mobile base 10 until the guide wheel 12 with an inner groove slides with the guide rail, so that the mobile base 10 and the adjustment box 40 move until the transmission gear 50 is aligned with the connecting gear, and push the adjustment box 40 so that the connecting external spline of the connecting gear meshes with the transmission internal spline 52 of the transmission gear 50;

[0039] C. Start the oil pump 31 so that the lifting oil cylinder 30 drives the rack 33 to rise, and the rack 33 drives the transmission gear 50 to rotate, the transmission gear 50 drives the connecting gear to rotate, and the connecting gear drives the mold core to rotate, and the color change is completed;

[0040] D. Stop the oil pump 31, so that the transmission gear 50 and the connecting gear stop rotating; start the translation cylinder 24, and the translation cylinder 24 drives the adjustment box 40 away from the vertical plate 21, so that the transmission gear 50 and the connecting gear are out of mesh;

[0041] E. Start the oil pump 31 so that the lifting cylinder 30 drives the rack 33 to descend and reset the rack 33.

[0042] Obviously, the above embodiments are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A co-extruder rapid color changing device, characterized in that: The invention comprises a movable base, a head mounting frame, an adjusting box body, a transmission gear and a connecting gear. The head mounting frame is fixedly arranged on the movable base, the adjusting box body is slidably matched with the joint mounting frame, a transmission matching power device and a rack are arranged in the adjusting box body, a rotatable transmission gear is arranged on the adjusting box body, the outer wall of the transmission gear is arranged with a transmission external spline meshing with the rack, one end of the connecting gear is arranged with a core external spline meshing with a core internal spline, the other end of the connecting gear is arranged with a connecting external spline, the inner wall of the transmission gear is arranged with a transmission internal spline transmission-matched with the connecting external spline of the connecting gear, when in use, the core external spline of the connecting gear extends into the core and meshes with the core internal spline, the movable base is moved until the connecting gear extends into the transmission gear, so that the transmission internal spline meshes with the connecting external spline, the rack is driven to rise and fall by the power device, the transmission gear is driven to rotate by the rack, and the transmission gear drives the core to rotate via the connecting gear; one of the multiple universal wheels arranged at the bottom end of the movable base is provided with a brake device.

2. The rapid color changing device for a co-extruder according to claim 1, characterized in that: The head mounting frame includes a horizontal plate and a vertical plate that are fixedly connected. The horizontal plate is fixedly connected to the movable base, and the bottom end of the vertical plate is fixedly connected to the horizontal plate. A plurality of guide slide bars parallel to the horizontal plate are fixedly arranged on the vertical plate, and the adjustment box body is slidably matched with the guide slide bars so that the adjustment box body can slide along the guide slide bars.

3. The rapid color changing device for a co-extruder according to claim 2, characterized in that: The adjusting box is provided with a translation cylinder, and the telescopic rod of the translation cylinder extends out of the adjusting box and abuts against the vertical plate, so that the translation cylinder can drive the adjusting box to translate along the guide slide rod.

4. The rapid color changing device for a co-extruder according to claim 3, characterized in that: The power device is a lifting cylinder, the top end of which is fixedly connected to the bottom end of the rack, and an oil pump is arranged on the movable base, which supplies oil to the lifting cylinder through an oil pipe.

5. The rapid color changing device for a co-extruder according to claim 4, characterized in that: Handles are arranged on both sides of the adjusting box.

6. The rapid color changing device for a co-extruder according to claim 5, characterized in that: It also includes an inverted U-shaped handrail, and connecting piles are arranged on both sides of the end of the mobile base. The two ends of the bottom of the handrail are plugged into and matched with the connecting piles, so that the handrail can be detachably arranged on the mobile base.

7. The rapid color changing device for a co-extruder according to claim 6, characterized in that: At least one rotatable guide wheel is also arranged at the bottom end of the movable base, the bottom end of the guide wheel is higher than the bottom end of the universal wheel, and at least one of the guide wheels is provided with an inner groove along the circumferential direction.

8. The working method of the rapid color changing device of the co-extruder according to claim 7, characterized in that: The steps include: A. Extend the outer spline of the core of the connecting gear into the core and mesh with the inner spline of the core, so that the connecting gear and the core of the co-extruder are matched; B. Set a guide rail in front of the co-extruder, move the mobile base until the guide wheel with an inner groove slides with the guide rail, move the mobile base and the adjustment box until the transmission gear is aligned with the connecting gear, push the adjustment box, so that the connecting external spline of the connecting gear is meshed with the transmission internal spline of the transmission gear; C. Start the oil pump to make the lifting cylinder drive the rack to rise, the rack drives the transmission gear to rotate, the transmission gear drives the connecting gear to rotate, the connecting gear drives the mold core to rotate, and the color change is completed; D. Stop the oil pump to stop the transmission gear and the connecting gear from rotating; start the translation cylinder, which drives the adjustment box away from the vertical plate, and the transmission gear and the connecting gear are disengaged; E. Start the oil pump so that the lifting cylinder drives the rack down and resets the rack.

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