An automatic centering device for the head of an outer sheath extruder for optical cables

Abstract

The present invention discloses an automatic centering device for the head of an outer sheath extruder for optical cables, comprising a front cover, a mold sleeve cover, a mold sleeve, a mold core, an adjustment sleeve, and an adjustment mechanism. The front cover and the mold sleeve cover are connected by mold sleeve cover connecting bolts and a disc spring assembly, and the front cover and the mold sleeve cover are spherically matched. The mold sleeve and the mold core are installed in the mold sleeve cover. The adjustment sleeve is connected to the mold sleeve cover by bolts. The adjustment mechanism comprises a motor and a reducer, an arc-shaped rack, a reducer gear, a connector, and a transmission rod. The motor and reducer are fixedly installed, and the reducer gear is installed on the reducer. One end of the transmission rod is connected to the adjustment sleeve, and the other end is located in the connector. The device can automatically adjust the wall thickness based on signals fed back by manual detection or thickness detection sensors to meet the concentricity requirements between the cable core and the outer sheath material.

Description

Technical Field

[0001] The invention belongs to the field of optical cable production equipment, and in particular relates to an automatic centering device for the head of an outer sheath extruder for optical cables. Background Art

[0002] Existing extruder head device: 1. The existing extruder head cannot achieve automatic adjustment of concentricity and requires manual adjustment, which is labor-intensive, slow to adjust, wastes a lot of materials, and has difficulty in ensuring the effect; 2. It cannot cooperate with detection components for real-time adjustment. Summary of the Invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides an automatic centering device for the head of an outer sheath extruder for optical cable. The device can automatically adjust the wall thickness through signals fed back by manual detection or thickness detection sensors to meet the concentricity requirements between the cable core and the outer sheath material.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic centering device for the head of an outer sheath extruder for optical cables, comprising a front cover, a mold sleeve cover, a mold sleeve, a mold core, an adjustment sleeve and an adjustment mechanism, the front cover and the mold sleeve cover are connected by mold sleeve cover connecting bolts and a disc spring assembly, and the front cover and the mold sleeve cover are spherically matched, the mold sleeve and the mold core are installed in the mold sleeve cover, and the adjustment sleeve is connected to the mold sleeve cover by bolts, the adjustment mechanism comprises a motor and a reducer, an arc-shaped rack, a reducer gear, a connecting piece and a transmission rod, the motor and the reducer are fixedly installed, and the reducer gear is installed on the reducer, one end of the transmission rod is connected to the adjustment sleeve, and the other end is in the connecting piece, the connecting piece is provided with a cavity to cooperate with the end of the transmission rod, the transmission rod and the connecting piece are provided with an adjustment gap, the connecting piece is connected with an arc-shaped rack, and the arc-shaped rack cooperates with the reducer gear.

[0005] In the above technical solution, the number of the adjustment mechanisms is at least 2, and the angle between the transmission rods of the two adjustment mechanisms with the farthest distance is 90 degrees.

[0006] In the above technical solution, an adjustment gap is provided on the flange surface after the front cover and the mold sleeve cover are connected.

[0007] In the above technical solution, the mold sleeve cover connecting bolts and disc spring assembly are arranged circumferentially, and their pre-tightening force is greater than the internal pressure of the machine head.

[0008] The beneficial effects of the present invention are: the centering device can replace manual adjustment and reduce the labor intensity of workers; the centering device cooperates with the wall thickness detection switch to realize the function of real-time adjustment; the device can be widely used in the field of round optical cable and electrical cable production. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1It is a cross-sectional view of the structure of the present invention.

[0010] Among them: 1. Center tube, 2. Diverter cone, 3. Pressure chamber, 4. Front cover, 5. Die cover, 6. Die cover connecting bolts and disc spring assembly, 7. Adjustment sleeve, 8. Die sleeve, 9. Die core, 10. Left and right adjustment of arc rack, 11. Left and right adjustment of motor and reducer, 12. Connector, 13. Up and down adjustment of arc rack, 14. Reducer gear, 15. Die cover gap adjustment, 16. Connector gap adjustment, 17. Up and down adjustment of motor and reducer, 18. Transmission rod, DETAILED DESCRIPTION

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0012] like Figure 1 The shown embodiment is an automatic centering device for the head of an outer sheath extruder for an optical cable, comprising a front cover 4, a mold sleeve cover 5, a mold sleeve 8, a mold core 9, an adjustment sleeve 7 and an adjustment mechanism, wherein the front cover 4 and the mold sleeve cover 5 are connected by mold sleeve cover connecting bolts and a disc spring assembly 6, and the front cover 4 and the mold sleeve cover 5 are spherically matched, the mold sleeve 8 and the mold core 9 are installed in the mold sleeve cover 5, and the adjustment sleeve 7 is connected to the mold sleeve cover 5 by bolts, and the adjustment mechanism comprises a motor and a reducer, an arcuate rack, a reducer gear 14, a connecting member 12 and a transmission rod 18, wherein the motor and the reducer are fixedly installed, and the reducer gear 14 is installed on the reducer, one end of the transmission rod 18 is connected to the adjustment sleeve 7, and the other end is in the connecting member 12, the connecting member 12 is provided with a cavity which cooperates with the end of the transmission rod 18, the transmission rod and the connecting member 12 are provided with a connecting member adjustment gap 16, the connecting member 12 is connected with an arcuate rack, and the arcuate rack cooperates with the reducer gear.

[0013] In the above technical solution, the number of the adjustment mechanisms is at least two, and the angle between the transmission rods of the two most distant adjustment mechanisms is 90 degrees. This embodiment uses two adjustment mechanisms, which are arranged perpendicularly to each other. If there are multiple adjustment mechanisms, the remaining adjustment mechanisms are installed between the two adjustment mechanisms arranged perpendicularly at 90 degrees and are evenly spaced.

[0014] In the above technical solution, a mold cover adjustment gap 15 is provided on the flange surface after the front cover 4 and the mold sleeve cover 5 are connected.

[0015] In the above technical solution, the mold sleeve cover connecting bolts and disc spring assembly are arranged circumferentially, and are pre-tightened with a torque wrench. The pre-tightening force must be greater than the internal pressure of the machine head, and the disc spring cannot be completely tightened, and there is sufficient elastic space.

[0016] The left and right adjustment motors and reducer 11 drive the adjustment sleeve 7 to move through a separate reducer gear and a left and right adjustment arc rack 10. Due to the existence of the mold cover adjustment gap 15, the front cover 4 and the mold sleeve cover 5 can rotate. During the rotation, the spherical center of the part mold sleeve cover 5 remains unchanged and always keeps in contact with the inner spherical surface of the part front cover 4, thereby realizing the centering function.

[0017] Similarly, the up and down adjustment motor and reducer 17 drive the connecting part 12 to move through the reducer gear 14 and the up and down adjustment arc rack 13, and drive the transmission rod 18 to move, so that the front cover 4 and the mold sleeve cover 5 can rotate. During the rotation process, the spherical center of the part mold sleeve cover 5 remains unchanged and always keeps in contact with the inner spherical surface of the part front cover 4, realizing the centering function.

[0018] Since there is a connector adjustment gap 16 between the connector 12 and the transmission rod 18, interference between the up and down adjustment and the left and right adjustment processes is prevented.

[0019] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. An automatic centering device for the head of an optical cable outer sheath extruder, comprising a front cover, a mold sleeve cover, a mold sleeve, a mold core, an adjustment sleeve, and an adjustment mechanism, characterized by: The front cover and the mold sleeve cover are connected by the mold sleeve cover connecting bolts and the disc spring assembly, and the front cover and the mold sleeve cover are spherically matched. The mold sleeve and the mold core are installed in the mold sleeve cover. The adjustment sleeve is connected to the mold sleeve cover by bolts. The adjustment mechanism includes a motor and a reducer, an arc-shaped rack, a reducer gear, a connecting piece and a transmission rod. The motor and the reducer are fixedly installed, and the reducer gear is installed on the reducer. One end of the transmission rod is connected to the adjustment sleeve, and the other end is in the connecting piece. The connecting piece is provided with a cavity to cooperate with the end of the transmission rod. The transmission rod and the connecting piece are provided with an adjustment gap. The connecting piece is connected with an arc-shaped rack, and the arc-shaped rack cooperates with the reducer gear.

2. The automatic centering device for the head of an optical cable outer sheath extruder according to claim 1, characterized in that: The number of the adjustment mechanisms is at least 2, and the angle between the transmission rods of the two adjustment mechanisms with the greatest distance between them is 90 degrees.

3. The automatic centering device for the head of an optical cable outer sheath extruder according to claim 1, characterized in that: An adjustment gap is provided on the flange surface after the front cover and the mold sleeve cover are connected.

4. The automatic centering device for the head of an optical cable outer sheath extruder according to claim 1, characterized in that: The mold sleeve cover connecting bolts and disc spring components are arranged circumferentially, and their pre-tightening force is greater than the internal pressure of the machine head.

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