Eccentricity adjustment device for cable extruder

Abstract

The invention discloses an eccentric adjustment device for a cable extruder, which can be installed on existing equipment as a whole without damaging and modifying the existing equipment, and can reliably adjust the eccentric position of the inner mold, so as to make the concentricity of the cable good. It includes: an inner ball head modification base, which includes an outer seat body and a ball head placement cavity with a concave front end; an outer hemispherical head inner mold base, which includes a tail hemispherical head and a convex guide structure, and the tail hemispherical head is also provided with a rear convex transmission guide rod, the center of the transmission guide rod is a through hole, and the through hole penetrates the radial center of the tail hemispherical head and the convex guide structure from back to front; an inner mold head, which includes a convex guide protrusion and a rear end mounting seat; an eccentric adjustment ring, which includes a ring body, the outer periphery of the ring body is annularly provided with a plurality of radial through threaded holes, and the thickness direction of the ring body is provided with a plurality of evenly distributed positioning through holes; a fixing seat; and a linear elastic component.

Description

Technical Field

[0001] The invention relates to the technical field of cable extruder structures, in particular to an eccentricity adjusting device for a cable extruder. Background Art

[0002] The extruder heads of U7 and U14 used by cable manufacturers cannot adjust the concentricity in a controlled manner. In the existing technology, most of the time, the operator adjusts the concentricity by adjusting the die spacing. However, this method has a lot of randomness and upper limits, and it is difficult to adjust or the adjustment is limited. As customers have higher and higher requirements for cable quality, the requirements for concentricity are also getting higher and higher. Most of the original equipment cannot produce cables with such high concentricity.

[0003] Therefore, it is necessary to purchase an expensive adjustable eccentric machine head, which adjusts the center position of the outer coating material to achieve the purpose of center adjustment. The adjustable eccentric machine head is very expensive, and its accessories are fragile and expensive.

[0004] Therefore, it is urgent to develop a low-cost and simple-structured device suitable for eccentric adjustment of cable extruders. Summary of the invention

[0005] In view of the above problems, the present invention provides an eccentricity adjustment device for a cable extruder, which can be installed as a whole on existing equipment without damaging or modifying the existing equipment, and can reliably adjust the eccentric position of the inner mold, thereby improving the concentricity of the cable.

[0006] An eccentricity adjustment device for a cable extruder, characterized in that it comprises:

[0007] An inner ball head modification base comprises an outer base body and a ball head placement cavity with a concave front end;

[0008] The outer hemispherical head inner mold base includes a tail hemispherical head and a front convex guide structure. The tail hemispherical head is also provided with a rear convex transmission guide rod. The center of the transmission guide rod is a through hole. The through hole penetrates the radial center of the tail hemispherical head and the front convex guide structure from back to front.

[0009] The inner die head includes a forward convex guide protrusion and a rear end mounting seat;

[0010] An eccentric adjustment ring comprises a ring body, the outer circumference of which is provided with a plurality of radially penetrating threaded holes, and a plurality of evenly distributed positioning through holes are provided in the thickness direction of the ring body;

[0011] Fixed seat;

[0012] and a linear elastic member;

[0013] The eccentric adjustment ring is fixedly mounted on the exposed end face of the tail machine head after passing through the positioning through hole through the axially arranged fastening bolt, the inner ball head modified base is fixedly inserted into the front guide hole of the tail machine head, and the tail hemisphere head is embedded in the ball head placement cavity of the inner ball head modified base, the transmission guide rod passes through the inner ball head modified base, the central through hole of the tail machine head, and the central hole of the eccentric adjustment ring from front to back, and is convex to the rear, and a fixing seat is installed at the tail end of the transmission guide rod, and a linear elastic component is arranged between the fixing seat and the rear end face of the eccentric adjustment ring, The linear elastic component is mounted on the top of the fixing seat so that the fixing seat tightens the tail hemisphere head through the transmission guide rod. The tail hemisphere head is arranged in close proximity to the ball head placement cavity, and the inner ball head modified base is tightly inserted and connected to the front end guide hole of the tail machine head. Each radial through threaded hole is respectively connected to a radial adjustment bolt, and the inner ends of the radial adjustment bolts are respectively in close proximity to the corresponding outer circumference of the transmission guide rod. Several groups of radial adjustment bolts are linked in combination to adjust the center position of the transmission guide rod. The rear end mounting seat of the inner die head is fixed to the central positioning hole of the forward convex guide structure.

[0014] It is further characterized by:

[0015] The outer seat body is a truncated cone structure that expands from the back to the front, and the central aperture of the outer seat body is larger than the outer diameter of the transmission guide rod, which ensures that the eccentric adjustment can be carried out reliably;

[0016] The outer circumference of the ring body is provided with four radially penetrating threaded holes, and the four radially penetrating threaded holes are located at the top, bottom, left and right, so as to ensure that the eccentric adjustment can be carried out reliably and conveniently;

[0017] The linear elastic component is an annular elastic part, and the linear elastic component is sleeved on the outer periphery of the transmission guide rod;

[0018] The diameter of the central through hole of the tail machine head is larger than the outer diameter of the transmission guide rod;

[0019] The diameter of the central through hole of the tail head is 20% to 40% larger than the outer diameter of the transmission guide rod, ensuring reliable clearance for eccentric adjustment;

[0020] The linear elastic component is a compression spring or a high temperature resistant spring. When the injection molding temperature is low, a compression spring is used. When the injection molding temperature is high, a high temperature resistant spring is used to ensure the elastic force. The function of the linear elastic component is only to make the inner ball head modified base and the outer hemispherical head inner mold base in a locked state rather than a locked state, to ensure that the material can be prevented from falling back and can move in the direction of the spherical surface.

[0021] The inner hole diameter of the inner die head is the hole diameter of the inner core, and the rear end mounting seat of the inner die head is positioned and mounted on the central positioning hole of the front convex guide structure through a threaded structure, which enables the inner die head to be quickly adjusted according to the actual hole diameter;

[0022] The tail end of the transmission guide rod is positioned and installed on the fixing seat through a threaded structure, which enables the entire structure to be assembled quickly and reliably.

[0023] After adopting the above technical scheme, the inner core passes through the fixed seat, the transmission guide rod, the tail hemispherical head, the front convex guide structure, and the inner mold head from back to front, and then penetrates into the guide hole of the front head. The front head is used to cover the outer sheath on the surface of the inner core. When there is an eccentric size between the outer sheath and the inner core, several groups of radial adjustment bolts are linked together to adjust the center position of the transmission guide rod, and the transmission guide rod causes the tail hemispherical head to undergo eccentric adjustment displacement through the lever principle, so that the concentricity of the inner core and the outer sheath is finally made the same. It can be installed as a whole on the existing equipment without damaging or modifying the existing equipment, and the eccentric position of the mold corresponding to the inner core can be reliably adjusted, thereby making the concentricity of the cable good. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a perspective exploded schematic diagram of the present invention;

[0025] Figure 2 The three-dimensional explosion diagram of the present invention applied to the machine head Figure 1 ;

[0026] Figure 3 The three-dimensional explosion diagram of the present invention applied to the machine head Figure 2 ;

[0027] The names corresponding to the serial numbers in the figure are as follows:

[0028] The inner ball head modification base 10, the outer seat body 11, the ball head placement cavity 12, the outer hemispherical head inner mold seat 20, the tail hemispherical head 21, the front convex guide structure 22, the transmission guide rod 23, the inner mold head 30, the guide protrusion 31, the rear end mounting seat 32, the eccentric adjustment ring 40, the ring body 41, the through threaded hole 42, the positioning through hole 43, the fixing seat 50, the linear elastic component 60, the fastening bolt 70, the tail head 80, the radial adjustment bolt 90, the front head 100, and the outer mold head 110. DETAILED DESCRIPTION

[0029] An eccentric adjustment device for a cable extruder, see Figure 1-Figure 3 , which includes an inner ball head modification base 10, an outer hemispherical head inner mold base 20, an inner mold head 30, an eccentric adjustment ring 40, a fixing base 50, and a linear elastic component 60;

[0030] The inner ball head modified base 10 comprises an outer base body 11 and a ball head placement cavity 12 with a concave front end;

[0031] The outer hemispherical head inner mold base 20 includes a tail hemispherical head 21, a front convex guide structure 22, and a transmission guide rod 23. The outer hemispherical head inner mold base 20 is an integrated structural component. The tail hemispherical head 21 is provided with a rear convex transmission guide rod 23. The center of the transmission guide rod 23 is a through hole, and the through hole penetrates the radial center of the tail hemispherical head 21 and the front convex guide structure 22 from back to front.

[0032] The inner die head 30 includes a forward convex guide protrusion 31 and a rear end mounting seat 32;

[0033] The eccentric adjustment ring 40 includes a ring body 41, a plurality of radially penetrating threaded holes 42 are arranged around the outer periphery of the ring body 41, and a plurality of evenly distributed positioning through holes 43 are arranged in the thickness direction of the ring body 41;

[0034] The eccentric adjustment ring 40 is fixedly mounted on the exposed end surface of the tail machine head 80 after passing through the positioning through hole 43 through the axially arranged fastening bolt 70. The inner ball head modified base 10 is fixedly inserted into the front end guide hole of the tail machine head 80. The ball head placement cavity 12 of the inner ball head modified base 10 is embedded with the tail hemispherical head 21. The transmission guide rod 23 passes through the inner ball head modified base 10, the central through hole of the tail machine head 80, and the central hole of the eccentric adjustment ring 40 from front to back, and is convex to the rear. The tail end of the transmission guide rod 23 is installed with a fixed seat 50. A linear elastic component 60 is arranged between the fixed seat 50 and the rear end surface of the eccentric adjustment ring 40. The linear elastic component 60 is arranged between the fixed seat 50 and the rear end surface of the eccentric adjustment ring 40. The fixed seat 50 is mounted on the top of the flexible component 60 so that the fixed seat 50 tightens the tail hemispherical head 21 through the transmission guide rod 23. The tail hemispherical head 21 is arranged close to the ball head placement cavity 12, and the inner ball head modified base 10 is tightly inserted and connected to the front end guide hole of the tail machine head 80. Each radial through threaded hole 22 is respectively connected with a radial adjustment bolt 90. The inner ends of the radial adjustment bolts 90 are respectively close to the corresponding outer circumference of the transmission guide rod 23. Several groups of radial adjustment bolts 90 are linked and combined to adjust the center position of the transmission guide rod 23. The rear end mounting seat 32 of the inner die head 30 is fixed to the central positioning hole of the front convex guide structure 22.

[0035] In specific implementation, the outer seat body 11 is a truncated cone structure that expands from the back to the front, and the central aperture of the outer seat body 11 is larger than the outer diameter of the transmission guide rod 23, which ensures that the eccentric adjustment can be performed reliably;

[0036] The outer circumference of the ring body 41 is provided with four radially penetrating threaded holes 42, which are located at the top, bottom, left and right, to ensure that the eccentric adjustment can be carried out reliably and conveniently;

[0037] The transmission guide rod 23 is thickened at the position corresponding to the radial through bolt 90 and can be coated with a wear-resistant and high-temperature resistant coating to ensure that the inner core in the transmission guide rod will not be affected, and the thickened transmission guide rod 23 will not affect the normal eccentric adjustment.

[0038] In specific implementation, the linear elastic component 60 is an annular elastic part, and the linear elastic component 60 is sleeved on the outer periphery of the transmission guide rod 23; the linear elastic component 60 is a compression spring or a high-temperature resistant spring. When the injection molding temperature is low, a compression spring is used. When the injection molding temperature is high, in order to ensure the elastic force, a high-temperature resistant spring, such as a disc spring, is used.

[0039] In specific implementation, the aperture of the central through hole of the tail head 80 is larger than the outer diameter of the transmission guide rod 23; preferably, the aperture of the central through hole of the tail head 80 is 20% to 40% larger than the outer diameter of the transmission guide rod 23, ensuring a reliable gap for eccentric adjustment.

[0040] The inner hole diameter of the inner die head 30 is the hole diameter of the inner core, and the rear end mounting seat of the inner die head 30 is positioned and mounted on the central positioning hole of the front convex guide structure 22 through a threaded structure, which enables the inner die head 30 to be quickly adjusted according to the actual hole diameter;

[0041] The tail end of the transmission guide rod 23 is positioned and mounted on the fixing seat 50 through a threaded structure, which enables the entire structure to be assembled quickly and reliably.

[0042] During specific implementation, the fixing seat 50 is used to be fixed on the tail of the transmission guide rod 23 to play a fixing role. When vacuuming is required, a vacuuming device can be used to replace the fixing seat 50.

[0043] For specific use, see Figure 2 and Figure 3 The outer die head 110 is placed in the inner hole of the front die head 100 , and the inner die head is arranged toward the outer die head 110 .

[0044] Its working principle is as follows: the inner core passes through the fixed seat, the transmission guide rod, the tail hemispherical head, the front convex guide structure, and the inner die head from back to front, and then goes deep into the guide hole of the front head. The front head is used to cover the outer sleeve on the surface of the inner core. When there is an eccentric size between the outer sleeve and the inner core, several groups of radial adjustment bolts are linked to adjust the center position of the transmission guide rod, and the transmission guide rod causes the tail hemispherical head to undergo eccentric adjustment displacement through the lever principle, and finally the concentricity of the inner core and the outer sleeve is made the same. There are two advantages of using the lever principle. First, the force used is small and the adjustment is convenient. Second, the distance change at the rear end is large and the change at the front end is very small, so the adjustment accuracy can be high.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An eccentricity adjustment device for a cable extruder, characterized in that: It includes: An inner ball head modification base comprises an outer base body and a ball head placement cavity with a concave front end; The outer hemispherical head inner mold base includes a tail hemispherical head and a front convex guide structure. The tail hemispherical head is also provided with a rear convex transmission guide rod. The center of the transmission guide rod is a through hole. The through hole penetrates the radial center of the tail hemispherical head and the front convex guide structure from back to front. The inner die head includes a forward convex guide protrusion and a rear end mounting seat; An eccentric adjustment ring comprises a ring body, the outer circumference of which is provided with a plurality of radially penetrating threaded holes, and a plurality of evenly distributed positioning through holes are provided in the thickness direction of the ring body; Fixed seat; and a linear elastic member; The eccentric adjustment ring is fixedly mounted on the exposed end face of the tail machine head after passing through the positioning through hole through the axially arranged fastening bolt, the inner ball head modified base is fixedly inserted into the front guide hole of the tail machine head, and the tail hemisphere head is embedded in the ball head placement cavity of the inner ball head modified base, the transmission guide rod passes through the inner ball head modified base, the central through hole of the tail machine head, and the central hole of the eccentric adjustment ring from front to back, and is convex to the rear, and a fixing seat is installed at the tail end of the transmission guide rod, and a linear elastic component is arranged between the fixing seat and the rear end face of the eccentric adjustment ring, The linear elastic component is mounted on the top of the fixing seat so that the fixing seat tightens the tail hemisphere head through the transmission guide rod. The tail hemisphere head is arranged in close proximity to the ball head placement cavity, and the inner ball head modified base is tightly inserted and connected to the front end guide hole of the tail machine head. Each radial through threaded hole is respectively connected to a radial adjustment bolt, and the inner ends of the radial adjustment bolts are respectively in close proximity to the corresponding outer circumference of the transmission guide rod. Several groups of radial adjustment bolts are linked in combination to adjust the center position of the transmission guide rod. The rear end mounting seat of the inner die head is fixed to the central positioning hole of the forward convex guide structure.

2. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The outer seat body is a truncated cone structure expanding from the back to the front, and the central hole diameter of the outer seat body is larger than the outer diameter of the transmission guide rod.

3. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The outer circumference of the ring body is provided with four radially penetrating threaded holes, and the positions of the four radially penetrating threaded holes are upper, lower, left and right.

4. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The linear elastic component is an annular elastic part, and the linear elastic component is sleeved on the outer periphery of the transmission guide rod.

5. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The diameter of the central through hole of the tail machine head is larger than the outer diameter of the transmission guide rod.

6. The eccentricity adjustment device for a cable extruder according to claim 5, characterized in that: The diameter of the central through hole of the tail machine head is 20% to 40% larger than the outer diameter of the transmission guide rod.

7. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The linear elastic component is a compression spring or a high temperature resistant spring. When the injection molding temperature is low, the compression spring is used. When the injection molding temperature is high, in order to ensure the elastic force, a high temperature resistant spring is used.

8. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The inner hole diameter of the inner die head is the hole diameter of the inner core, and the rear end mounting seat of the inner die head is positioned and mounted on the central positioning hole of the front convex guide structure through a threaded structure.

9. The eccentricity adjustment device for a cable extruder according to claim 1, characterized in that: The tail end of the transmission guide rod is positioned and installed on the fixing seat through a threaded structure.

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