CN220548668U - Cable sheath extruding machine is with crowded package mould - Google Patents

Abstract

The utility model discloses an extrusion die for a cable sheath plastic extruding machine, which comprises a die sleeve and a die core, wherein the die core comprises a connecting sleeve and an outer cone which are connected with each other, one end of the outer cone, which is opposite to the die sleeve, is provided with a connecting column which is used for being connected with a die core seat, the connecting sleeve is sleeved outside the die sleeve and is in threaded connection with the die sleeve, the die sleeve is provided with an inner cone hole into which the outer cone extends, a material injection channel for injecting molten plastics is formed between the outer cone and the inner cone hole, and the connecting sleeve is provided with a material injection groove which is communicated with the material injection channel. According to the extrusion die for the cable sheath extruder, the die core and the die sleeve are connected in a sleeved mode, so that coaxiality between the die core and the die sleeve is guaranteed, meanwhile, the die sleeve is rotated relative to the die core to adjust the die spacing, the operation is convenient, and the installation efficiency of the extrusion die is improved.

Description

Cable sheath extruding machine is with crowded package mould

Technical Field

The utility model relates to the technical field of sheath extrusion, in particular to an extrusion die for a cable sheath extruder.

Background

The cable sheath extruder is an indispensable device in the cable processing process, and utilizes a screw to extrude molten plastic forwards, and then the plastic is extruded into continuous plastic layers with various shapes required by extrusion dies with different shapes so as to be extruded on a metal wire core. The extrusion die is an important part on the extruder, and the specific size of the extrusion die is determined by the specification of the cable sheath and the extrusion process parameters, so that whether the die is reasonably matched directly influences the quality of extrusion.

The extruding die comprises a die core and a die sleeve, wherein the die core is fixed on a die core seat and is used for fixing and supporting a metal wire core, the die sleeve is used for enabling plastics to enter a pore canal of the die sleeve to be formed after passing through a gap formed by an inner taper hole of the die core and an outer taper of the die core, when the die core and the die sleeve are matched for use, the die core and the die sleeve are required to be in a coaxial position, and an outer taper part of the die core extends into an inner taper hole of the die sleeve. The distance between the front end of the outer cone and the front end of the inner cone hole is the die spacing, and the die spacing is an important installation parameter in the extrusion die and is used for adjusting extrusion pressure so as to ensure the smoothness and concentricity of the extrusion appearance. At present, in the extrusion die with adjustable die spacing, the die core seat bolt is adjusted to adjust the position of the die core relative to the die sleeve, so that the adjustment of the die spacing is realized, and as the die core and the die sleeve are in split design, the coaxiality between the die core and the die sleeve is difficult to ensure, and a plurality of inconveniences are undoubtedly brought to the installation of the extrusion die and the adjustment of the die spacing.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: in the prior art, the coaxiality of the mold core and the mold sleeve is difficult to ensure when the mold core and the mold sleeve are matched for use, and the mold spacing is inconvenient to adjust.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a cable sheath extruding machine is with crowded package mould, includes die sleeve and mold core, the mold core includes interconnect's adapter sleeve and outer cone, on the outer cone relative the one end of die sleeve is equipped with the spliced pole that is used for being connected with the mold core seat, the adapter sleeve cover is established the outside of die sleeve and with die sleeve threaded connection, be equipped with on the die sleeve and supply the interior taper hole that the outer cone stretched into, the outer cone with form between the interior taper hole and be used for injecting into the material passageway of annotating molten plastic, set up on the adapter sleeve with annotating the material groove of annotating material passageway intercommunication.

Further, the number of the material injection grooves is multiple, and the material injection grooves are uniformly arranged along the circumference of the connecting sleeve.

Further, the material injection groove is of a strip-shaped waist-round structure, and one end of the material injection groove is located at the joint of the connecting sleeve and the outer cone.

Further, the outer cone is fixedly accommodated in one end of the connecting sleeve, the outer cone and the connecting sleeve are coaxially arranged, and the connecting column is fixedly connected with the side wall of the outer cone and is coaxially arranged with the outer cone.

Further, the connecting column is a stud in threaded fit connection with the mold core seat.

Further, a wire guide hole is formed in the middle of the outer cone in the axial direction, an extrusion hole is formed in the middle of the die sleeve in the axial direction, and the aperture of the extrusion hole is larger than that of the wire guide hole.

Further, a conical hole is axially formed in one end, far away from the die sleeve, of the outer cone, a small opening end of the conical hole is communicated with the wire guide hole, and the diameter of the small opening end of the conical hole is the same as that of the wire guide hole.

Further, the extrusion die for the cable sheath extruding machine further comprises an elastic piece, the elastic piece is arranged outside the die sleeve, an annular flange is convexly arranged on the outer wall of the die sleeve, one end of the elastic piece is propped against the flange, and the other end of the elastic piece is propped against the side wall of one end of the connecting sleeve.

Further, the elastic piece is a spring sleeved outside the die sleeve.

The beneficial effects of the utility model are as follows: according to the utility model, the traditional independent installation mode is changed, the mold core and the mold sleeve are connected together in a sleeved mode, so that the coaxiality of the mold sleeve and the mold core is ensured, in addition, the mold sleeve and the mold core are connected in a threaded fit mode, and when the mold sleeve is rotated relative to the mold core, the mold sleeve can be driven to move, so that the adjustment of the mold spacing is facilitated, and the operation is simple and convenient.

Drawings

The utility model is further described below with reference to the drawings and examples.

Fig. 1 is a schematic view of the structure of an extrusion die for a cable sheath extruder of the present utility model.

In the figure: 1. the die sleeve, 11, an inner taper hole, 12, an extrusion hole, 13, a flange, 2, a die core, 21, a connecting sleeve, 210, a material injection groove, 22, an outer taper body, 220, a material injection channel, 221, a wire guide, 222, a taper hole, 23, a connecting column, 3 and an elastic piece.

Detailed Description

The present utility model will now be described in detail with reference to the accompanying drawings. The figure is a simplified schematic diagram illustrating the basic structure of the utility model only by way of illustration, and therefore it shows only the constitution related to the utility model.

Referring to fig. 1, the utility model provides an extrusion die for a cable sheath extruder, which comprises a die sleeve 1 and a die core 2, wherein the die core 2 comprises a connecting sleeve 21 and an outer cone 22 which are connected with each other, a connecting column 23 which is used for being connected with a die core seat is arranged at one end of the outer cone 22 opposite to the die sleeve 1, the connecting sleeve 21 is sleeved outside the die sleeve 1 and is in threaded connection with the die sleeve 1, an inner cone hole 11 into which the outer cone 22 extends is arranged on the die sleeve 1, a material injection channel 220 is formed between the outer cone 22 and the inner cone hole 11, the material injection channel 220 is used for allowing molten plastics to enter the extrusion die, and a material injection groove 210 which is communicated with the material injection channel 220 is arranged on the connecting sleeve 21.

During installation, the die core 2 is fixedly installed on the die core seat through the connecting column 23, the die sleeve 1 is fixedly installed on the die core 2 in a threaded fit mode through the connecting sleeve 21, when the die is used, the metal wire core moves from the rear end to the front end of the die core 2, molten plastic is filled into the material filling channel 220 through the material filling groove 210 and further contacts with the metal wire core, so that gaps among the metal wire cores are filled, and finally the metal wire core penetrates out of the die sleeve 1 together. When a user needs to adjust the die spacing h, the die sleeve 1 can move circumferentially relative to the die core 2 only by rotating the die sleeve 1 relative to the die core 2, so that the effect of adjusting the die spacing h of the extrusion die is realized.

Compared with the traditional independent installation mode of the die core 2 and the die sleeve 1, the extrusion die for the cable sheath extruder has the advantages that the die core 2 and the die sleeve 1 are connected together in a sleeved mode, the installation mode is simple and efficient, and the coaxiality between the die sleeve 1 and the die core 2 is ensured. Meanwhile, when the die spacing h of the extrusion die is adjusted, the die sleeve 1 is only required to rotate relative to the die core 2, so that the operation is simple and convenient, the operation is easy, and the installation efficiency of the extrusion die is improved.

The connecting sleeve 21 is of a sleeve-shaped structure with two through ends, the outer cone 22 is fixedly contained in one end of the connecting sleeve 21, the outer cone 22 and the connecting sleeve 21 are coaxially arranged, the connecting column 23 is fixedly connected with the side wall of the outer cone 22, and the connecting column 23 and the outer cone 22 are coaxially arranged. In this embodiment, the connecting posts 23 are studs that are fixedly mounted to the core holder by a threaded fit, thereby facilitating quick mounting of the core 2 to the core holder.

The middle part of the outer cone 22 is axially provided with a wire hole 221 for the metal wire core before plastic extrusion to pass through, the middle part of the die sleeve 1 is axially provided with an extrusion hole 12 for the metal wire core after plastic extrusion to pass through, and the aperture of the extrusion hole 12 is larger than that of the wire hole 221. The aperture of the wire hole 221 is matched with the external dimension of the metal wire core before the plastic is extruded, so that the metal wire core is prevented from shaking in the wire hole 221, and when the wire hole is used, the metal wire core passes through the wire hole 221 and then contacts with molten plastic injected through the material injection channel 220, and then the molten plastic is extruded outside the metal wire core under the shaping effect of the extrusion hole 12.

The number of the injection grooves 210 is plural, and the injection grooves 210 are uniformly arranged along the circumferential direction of the connecting sleeve 21 so as to ensure the feeding uniformity. The injection groove 210 is of a strip-shaped waist-round structure, and one end of the injection groove 210 is positioned at the joint of the connecting sleeve 21 and the outer cone 22.

In addition, a conical hole 222 is axially formed in one end, far away from the die sleeve 1, of the outer cone 22, a small opening end of the conical hole 222 is communicated with the wire guide hole 221, and the diameter of the small opening end of the conical hole 222 is the same as that of the wire guide hole 221.

The extrusion die for the cable sheath extruder further comprises an elastic piece 3, wherein the elastic piece 3 is arranged outside the die sleeve 1 in a telescopic way along the axial direction of the die sleeve 1, an annular flange 13 is convexly arranged on the outer wall of the die sleeve 1, one end of the elastic piece 3 is abutted against the flange 13, and the other end of the elastic piece 3 is abutted against the side wall of one end of the connecting sleeve 21. Under the elastic force action of the elastic piece 3, the die sleeve 1 and the die core 2 are always subjected to opposite acting forces, so that the connection stability between the die sleeve 1 and the die core 2 is more accurate, and the situation that the die sleeve 1 and the die core 2 are easily separated from each other is effectively avoided. Meanwhile, the elastic force of the elastic piece 3 can eliminate the screw thread fit clearance between the die sleeve 1 and the die core 2, and the dimensional accuracy of the die spacing h is improved. In the present embodiment, the elastic member 3 is a spring fitted to the outside of the die case 1.

In addition, in order to facilitate the rapid adjustment of the die spacing h by a user, a plurality of scale marks are arranged on the outer wall of the connecting sleeve 21 along the axial direction near the injection groove 210, scale numbers are marked on each scale mark, the scale numbers can directly reflect the size of the die spacing h, and during adjustment, after passing through the injection groove 210, the alignment relationship between the scale marks and the rear end wall of the die sleeve 1 can be utilized, so that whether the die spacing h is adjusted in place or not is known, and the operation of the user is facilitated.

While the foregoing is directed to the preferred embodiment of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (9)

1. The utility model provides a cable sheath extruding machine is with crowded package mould, includes die sleeve and mold core, its characterized in that: the mold core comprises a connecting sleeve and an outer cone which are connected with each other, a connecting column used for being connected with a mold core seat is arranged at one end of the outer cone, which is opposite to the mold sleeve, the connecting sleeve is sleeved outside the mold sleeve and is in threaded connection with the mold sleeve, an inner cone hole used for the outer cone to extend in is formed in the mold sleeve, a material injection channel used for injecting molten plastics is formed between the outer cone and the inner cone hole, and a material injection groove communicated with the material injection channel is formed in the connecting sleeve.

2. The extrusion die for a cable jacket extruder as set forth in claim 1, wherein: the injection grooves are uniformly formed in the circumferential direction of the connecting sleeve.

3. The extrusion die for a cable jacket extruder as set forth in claim 2, wherein: the injection groove is of a strip-shaped waist-round structure, and one end of the injection groove is located at the joint of the connecting sleeve and the outer cone.

4. The extrusion die for a cable jacket extruder as set forth in claim 1, wherein: the outer cone is fixedly contained in one end of the connecting sleeve, the outer cone and the connecting sleeve are coaxially arranged, and the connecting column is fixedly connected with the side wall of the outer cone and is coaxially arranged with the outer cone.

5. The extrusion die for a cable jacket extruder as set forth in claim 4, wherein: the connecting column is a stud which is in threaded fit connection with the mold core seat.

6. The extrusion die for a cable jacket extruder as set forth in claim 4, wherein: the middle part of outer cone has offered the wire guide along the axial, the crowded package hole has been offered along the axial to the middle part of die sleeve, the aperture of crowded package hole is greater than the aperture of wire guide.

7. The extrusion die for a cable jacket extruder as set forth in claim 6, wherein: and one end, far away from the die sleeve, of the outer cone is provided with a conical hole along the axial direction, the small opening end of the conical hole is communicated with the wire guide hole, and the diameter of the small opening end of the conical hole is the same as that of the wire guide hole.

8. The extrusion die for a cable jacket extruder as set forth in claim 1, wherein: the extrusion die for the cable sheath extruder further comprises an elastic piece, the elastic piece is arranged outside the die sleeve, an annular flange is convexly arranged on the outer wall of the die sleeve, one end of the elastic piece is propped against the flange, and the other end of the elastic piece is propped against the side wall of one end of the connecting sleeve.

9. The extrusion die for a cable jacket extruder as set forth in claim 8, wherein: the elastic piece is a spring sleeved outside the die sleeve.