CN216443017U - Flame-retardant flat cable extrusion molding equipment - Google Patents

Abstract

The utility model relates to a fire-retardant winding displacement extrusion molding equipment, the technical field who relates to special electric wire, it includes the mould body, this internal cavity that is formed with of mould, the feed head that is linked together with the cavity is installed to the mould body, install on the feed head and be used for the connector that links to each other with the extruder, the connector lateral wall is connected with the pressurization subassembly, the pressurization subassembly includes the air supply, pressurized tube and pressurization head, the air supply links to each other with the pressurized tube, pressurized tube and connector intercommunication, the pressurization head is located the connector and is connected with the pressurized tube, the pressurization head is used for guiding the air current along the motion of feed head inner wall. This application will pressurize gas through the air supply and transport in to the pressurized tube, and pressurized gas moves to the feed head in through the pressurized head, and pressurized gas strikes the material on the feed head inner wall, makes the melting material to this internal motion of mould, has alleviated the not good unable timely motion to this internal problem of mould of material fluidity after the melting is extruded to a certain extent.

Description

Flame-retardant flat cable extrusion molding equipment

Technical Field

The application relates to the technical field of special electric wires, in particular to flame-retardant flat cable extrusion molding equipment.

Background

The PVC cable is generally a cable in which power lines or signal lines are arranged in a band shape and then a protective cover is extruded into a band shape for data transmission in a movable part and a movable area. The PVC flat cable generally comprises a cable core and a protective sleeve, the distance between two adjacent wires is generally 2.0mm or 2.5mm, and the protective sleeve of the PVC flat cable is generally made of raw materials such as flame retardant, oil resistance and mould resistance and is used for endowing the PVC flat cable with the performances of fire resistance, oil resistance and mould resistance.

In the related art, the process of processing and forming the PVC cable generally includes the following steps: the wire is arranged into the banding through winding displacement machine, the extruder extrudes the raw materials melting of lag, the melting raw materials from mould top entry transportation to the cavity in the mould, the wire of arranging passes the cavity that loads the melting raw materials from mould one side, the wire of arranging leaves and the primary forming from the mould opposite side, the PVC winding displacement of primary forming calibrates through the normalizing machine, then the PVC winding displacement cools off the shaping and air-dries through cooling device, the PVC winding displacement is finally rolled up by the coiling mechanism.

In view of the above-mentioned related technologies, applicants have found that in an actual production process, because a PVC flat cable is generally required to have good flame retardant, mold resistance, and other properties, it is necessary to adjust or modify a raw material composition of the protective sleeve, and after the raw material composition is adjusted or modified, the fluidity of the raw material melt-extruded by an extruder may be reduced compared with the fluidity of the raw material before adjustment, which may further cause that the raw material melt-extruded cannot move well into a mold, and may finally cause that the protective sleeve of the PVC flat cable is molded unevenly, thereby generating inferior products.

Disclosure of Invention

In order to solve the problem that a PVC flat cable protective sleeve is not uniformly formed after the fluidity of raw materials after melt extrusion is reduced, the application provides flame-retardant flat cable extrusion molding equipment.

The application provides a fire-retardant winding displacement extrusion molding equipment adopts following technical scheme:

the utility model provides a fire-retardant winding displacement extrusion molding equipment, includes the mould body, this internal cavity that is formed with of mould, the mould body install with the feed head that the cavity is linked together, install on the feed head and be used for the connector that links to each other with the extruder, the connector lateral wall is connected with the pressurization subassembly, the pressurization subassembly includes air supply, pressurized tube and pressurization head, the air supply with the pressurized tube links to each other, the pressurized tube with the connector intercommunication, the pressurization head be located in the connector and with the pressurization union coupling, the pressurization head is used for guiding the air current to follow the motion of feed head inner wall.

Through adopting above-mentioned technical scheme, the connector is used for in the material drainage to the feed head of mould body with extruder melt extrusion, and the air supply transports pressurized gas to the pressurized tube in, and pressurized gas passes through the pressurized head and moves to the feed head in, and pressurized gas is through strikeing the melting material on the feed head inner wall, makes the melting material to this internal motion of mould, has alleviated the material fluidity after the melt extrusion to a certain extent and can't the internal problem of timely movement to mould.

Optionally, the feed head periphery wall is provided with the external screw thread, the connector include the linkage segment and with the erection segment that the linkage segment links to each other, the linkage segment inner wall is provided with the internal thread, the internal diameter of erection segment is less than the internal diameter of linkage segment, add pressure head pass through mounting fixed mounting in the erection segment.

By adopting the technical scheme, the connecting section is in threaded fit with the feeding head, so that the connecting head and the feeding head can be conveniently disassembled, and residual materials on the inner walls of the connecting head and the feeding head can be conveniently cleaned; on the other hand, the setting that the installation section internal diameter is less than the linkage segment internal diameter for the top of stub bar can the butt in installation section department after the installation, and then forms the link up of passageway in the stub bar and the installation section, reduces the flow that stops of material at the stub bar and installation section transition department.

Optionally, the pressurizing head includes a connecting portion and a guiding portion connected to the connecting portion, the fixing member is a fixing bolt, the fixing bolt penetrates through the connecting portion and is connected to the mounting portion, the pressurizing pipe is connected to the side wall of the connecting portion, and a gas introducing channel for allowing gas flow to pass through is formed in the connecting portion and the guiding portion.

By adopting the technical scheme, the arrangement of the connecting part and the fixing bolt is used for realizing the loading and unloading work of the pressurizing head on the mounting section; the setting of guide portion and bleed passageway for can follow the feed head inner wall direction motion behind the pressurized air current entering the passageway in the feed head, thereby drive the material on the feed head inner wall and to this internal motion of mould, improve the mobile influence of pressurized air current to the material.

Optionally, the connecting portion is provided with a positioning block, and the mounting section is provided with a positioning groove for clamping the positioning block.

By adopting the technical scheme, the positioning block on the connecting part and the positioning groove on the mounting section are arranged, so that on one hand, the effect of primary fixing of the pressurizing head on the mounting section is achieved; on the other hand, the positioning function is realized for the installation position of the pressurizing head on the installation section, and the subsequent communication of the air-guiding channel in the pressurizing head and the pressurizing pipe is convenient.

Optionally, a feeding channel is formed in the feeding head, and the diameter of the feeding channel gradually increases from the end close to the die body to the end far away from the die body.

Through adopting above-mentioned technical scheme, feed channel is the setting of the round platform form of invering for when the pressurized airflow passes through feed channel, have different velocity of flow, thereby produce further impact to the material in the feed channel, and then further improve the pressurized airflow to the mobile effect of increase material.

Optionally, the connecting pipe is installed to the connector lateral wall, connecting pipe one end tip is provided with threaded connection head, threaded connection head with connecting portion lateral wall threaded connection, the connecting pipe other end pass through the ring flange with the pressurized tube is connected.

Through adopting above-mentioned technical scheme, threaded connection head and connecting portion's setting have realized the connector and have added the dismantlement of pressure head and be connected, and simultaneously, the connector passes through flange joint's mode with the pressurization pipe, conveniently realizes installation and dismantlement between connector, connecting pipe and the pressurization pipe.

Optionally, a ball valve for controlling the on-off state of the pressurizing pipe is mounted on the pressurizing pipe.

Through adopting above-mentioned technical scheme, the setting of ball valve for the staff accessible adjusts the pressurized gas flow that gets into in the feed head through the aperture of adjustment ball valve, has avoided forming the impact to this internal wire of mould because of the pressurized gas flow is too big as far as possible, has compromise the shaping quality of the outer lag of wire when having guaranteed material mobility to a certain extent.

Optionally, an air outlet pipe is installed on the side wall of the die body, on which the feeding head is installed, and is communicated with the cavity, and a circular truncated cone-shaped air outlet is formed in the joint of the die body and the air outlet pipe.

Through adopting above-mentioned technical scheme, the setting of outlet duct has played the recovery and the mediation effect to getting into this internal pressurized airflow of mould, and the setting of the gas outlet of round platform form simultaneously compares in ordinary gas outlet, can increase the velocity of flow when dredging pressurized airflow to a certain extent, improves the pressurized airflow to a certain extent and leaves this internal speed of mould.

Optionally, a first guide plate and a second guide plate are respectively installed on two sides of the mold body, the first guide plate is provided with guide holes for the lead to pass through at intervals along the horizontal direction, and the second guide plate is provided with injection ports at intervals along the horizontal direction.

Optionally, a front sealing cover and a rear sealing cover are respectively arranged on two sides of the die body, the front sealing cover and the rear sealing cover are both fixedly mounted on the die body through bolts, and the front sealing cover and the rear sealing cover are respectively used for tightly mounting the first guide plate and the second guide plate on the die body.

By adopting the technical scheme, the arrangement of the guide hole on the first guide plate plays a role in guiding the lead to enter the die body for forming the anti-slip sleeve, and the arrangement of the injection hole on the second guide plate plays a role in forming the shape of the protective sleeve; meanwhile, the arrangement of the front sealing cover and the rear sealing cover plays a role in mounting the first guide plate and the second guide plate on the die body.

In summary, the present application includes at least one of the following beneficial technical effects:

the pressurized gas is transported into the pressurizing pipe through the gas source, the pressurized gas moves into the feeding head through the pressurizing head, and the pressurized gas impacts the material on the inner wall of the feeding head to promote the molten material to move into the die body, so that the problem that the material after being molten and extruded has poor flowability and cannot move into the die body in time is solved to a certain extent;

through the setting of ball valve for the staff accessible adjusts the pressurized gas flow that gets into in the feed head through the aperture of adjustment ball valve, has avoided producing the impact to this internal wire of mould because of the pressurized gas flow is too big as far as possible, has compromise the shaping quality of the outer lag of wire when having guaranteed material mobility to a certain extent.

Drawings

FIG. 1 is a schematic diagram of an explosive structure of example 1 of the present application;

FIG. 2 is a schematic cross-sectional view of the mold body of FIG. 1;

FIG. 3 is an enlarged partial schematic view of portion A of FIG. 2;

in the figure, 100, a mold body; 110. a cavity; 120. a stepped groove; 130. a first guide plate; 140. a second guide plate; 150. a guide hole; 160. an injection port; 170. a front cover; 180. sealing the cover; 190. a feed head; 200. a feed channel; 210. an air outlet pipe; 220. an air outlet; 230. a connector; 231. a connecting section; 232. an installation section; 240. a gas source; 250. a pressurizing pipe; 260. a pressurizing head; 261. a connecting portion; 262. a guide section; 270. a bleed air passage; 280. positioning blocks; 290. positioning a groove; 300. fixing the bolt; 310. a connecting pipe; 320. a threaded connector; 330. a ball valve.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The utility model provides a fire-retardant winding displacement extrusion molding equipment, refers to fig. 1, includes mould body 100, is formed with the cavity 110 that supplies wire machine-shaping lag in the mould body 100, and the both sides of mould body 100 are open mode and communicate with the external world, and the both sides lateral wall department of mould body 100 is formed with ladder groove 120. The first guide plate 130 and the second guide plate 140 are respectively installed in the two stepped grooves 120 in a clamping mode, the first guide plate 130 is located at the wire feeding end, and the second guide plate 140 is located at the wire discharging end. The first guide plate 130 is provided with a plurality of guide holes 150 for the lead wires to pass through at intervals along the horizontal direction, the second guide plate 140 is provided with a plurality of injection ports 160 at intervals along the horizontal direction, and two adjacent injection ports 160 are communicated with each other.

Referring to fig. 1, a front cover 170 is detachably connected to the mold body 100 on which the first guide plate 130 is mounted, the front cover 170 is fixedly mounted on the mold body 100 through a plurality of bolts, and the front cover 170 presses the first guide plate 130 against the stepped groove 120 under the action of the bolts; the die body 100 provided with the second guide plate 140 is detachably connected with a rear sealing cover 180, the rear sealing cover 180 is fixedly mounted on the die body 100 through a plurality of bolts, and the rear sealing cover 180 abuts against the second guide plate 140 in the stepped groove 120 under the action of the bolts.

Referring to fig. 1 and 2, a feed head 190 communicated with the cavity 110 is fixedly installed at the top end of the die body 100, an external thread is arranged on the outer peripheral wall of the feed head 190, a feed channel 200 in an inverted circular truncated cone shape is formed in the feed head 190, and the diameter of the feed channel 200 is gradually increased from one end close to the die body 100 to one end far away from the die body 100. Two air outlet pipes 210 are fixedly installed at the top end of the die body 100, the two air outlet pipes 210 are located on two opposite sides of the feeding head 190, the air outlet pipes 210 are communicated with the cavity 110, and a truncated cone-shaped air outlet 220 is formed at the joint of the inner wall of the die body 100 and the air outlet pipes 210 and used for accelerating the pressurized air to leave the cavity 110.

Referring to fig. 2 and 3, a connector 230 for connecting with an extruder is connected to the feed head 190 through a thread, the connector 230 includes a connection section 231 and a mounting section 232 integrally formed with and connected to the connection section 231, an inner diameter of the mounting section 232 is smaller than an inner diameter of the connection section 231, and an inner wall of the connection section 231 is provided with an inner thread matched with an outer thread of the feed head 190.

Referring to fig. 2 and 3, two pressurizing assemblies are connected to the side wall of the connecting head 230, and the two pressurizing assemblies are arranged oppositely, and each pressurizing assembly comprises a gas source 240, a pressurizing pipe 250 and a pressurizing head 260. The pressurizing head 260 comprises a connecting portion 261 and a guiding portion 262 which is integrally formed with and connected with the connecting portion 261, the connecting portion 261 is semicircular, the inner diameter of the connecting portion 261 is equal to that of the mounting section 232, the guiding portion 262 is semicircular, the outer wall of the guiding portion 262 is abutted to the inner wall of the feeding channel 200, and a bleed air channel 270 for air flow to pass through is formed in the connecting portion 261 and the guiding portion 262. The connecting parts 261 of the two groups of pressing assemblies form a circular ring in a surrounding mode, and the guide parts 262 of the two groups of pressing assemblies form a hollow inverted circular table in a surrounding mode.

Referring to fig. 2 and 3, two positioning blocks 280 are fixedly arranged on the end faces of the connecting portion 261 abutted to the mounting section 232 along the circumferential direction, two positioning grooves 290 for clamping the positioning blocks 280 are formed in the end faces of the mounting section 232 abutted to the connecting portion 261, the connecting portion 261 is connected with the mounting section 232 through a fixing piece, the fixing piece is a fixing bolt, and the fixing bolt penetrates through the connecting portion 261 and is in threaded connection with the mounting section 232 and abuts against the connecting portion 261 on the mounting section 232. The connecting pipe 310 is detachably mounted on the side wall of the connecting portion 261, a threaded connector 320 is arranged at one end, close to the connecting portion 261, of the connecting pipe 310, the threaded connector 320 is fixedly connected with the side wall of the connecting portion 261 and communicates the connecting pipe 310 with the air-entraining channel 270, and the other end of the connecting pipe 310 is fixedly connected with the pressure pipe 250 through a flange.

Referring to fig. 2, a ball valve 330 for controlling the opening and closing state and the valve opening of the pressure pipe 250 is installed on the pressure pipe 250, one end of the pressure pipe 250, which is far away from the flange, is connected to an air source 240, and the air source 240 may be an air compressor or other devices capable of generating pressurized air.

The implementation principle of the embodiment of the application is as follows:

when the processing technology of protecting the lead is needed, the lead to be processed moves into the cavity 110 of the die body 100 from the guide hole 150 on the first guide plate 130, and the material extruded by the extruder moves into the feed head 190 through the connecting head 230; the air source 240 and the ball valve 330 are opened, the pressurized air moves into the air-entraining channel 270 in the pressurizing head 260 through the pressurizing pipe 250, the pressurized air further enters the feeding channel 200 of the feeding head 190 through the air-entraining channel 270, the pressurized air further impacts the material in the feeding channel 200 to further increase the fluidity of the material in the feeding channel 200, the material moves into the cavity 110 of the mold body 100 under the action of the pressurized air, and the lead wire passes through the cavity 110, contacts with the material and finally passes through the injection hole in the second guide plate 140 to be preliminarily molded to be coated with the protective sleeve.

The embodiments of the present invention are preferred embodiments of the present application, and the protection scope of the present application is not limited thereby, wherein like parts are denoted by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a fire-retardant winding displacement extrusion molding equipment, includes mould body (100), be formed with cavity (110) in mould body (100), mould body (100) install with feed head (190) that cavity (110) are linked together, a serial communication port, install on feed head (190) and be used for connector (230) that link to each other with the extruder, connector (230) lateral wall is connected with the pressurization subassembly, the pressurization subassembly includes air supply (240), pressurization pipe (250) and pressurization head (260), air supply (240) with pressurization pipe (250) link to each other, pressurization pipe (250) with connector (230) intercommunication, pressurization head (260) are located in connector (230) and with pressurization pipe (250) are connected, pressurization head (260) are used for guiding the air current to follow the motion of feed head (190) inner wall.

2. The extrusion molding apparatus of claim 1, wherein the outer peripheral wall of the feeding head (190) is provided with an external thread, the connecting head (230) comprises a connecting section (231) and an installation section (232) connected with the connecting section (231), the inner wall of the connecting section (231) is provided with an internal thread, the inner diameter of the installation section (232) is smaller than that of the connecting section (231), and the pressurizing head (260) is fixedly installed on the installation section (232) through a fixing member.

3. The extrusion molding apparatus of claim 2, wherein the pressure head (260) comprises a connecting portion (261) and a guiding portion (262) connected to the connecting portion (261), the fixing member is configured as a fixing bolt (300), the fixing bolt (300) passes through the connecting portion (261) and is connected to the mounting section (232), the pressure tube (250) is connected to a side wall of the connecting portion (261), and an air-introducing channel (270) for passing an air flow is formed in the connecting portion (261) and the guiding portion (262).

4. The extrusion molding apparatus of claim 3, wherein the connecting portion (261) is provided with a positioning block (280), and the mounting section (232) is provided with a positioning groove (290) for clamping the positioning block (280).

5. The flat cable extrusion molding apparatus of claim 1, wherein the feed head (190) has a feed channel (200) formed therein, and the diameter of the feed channel (200) is gradually increased from an end close to the die body (100) to an end far away from the die body (100).

6. A fire-retardant winding displacement extrusion molding equipment of claim 3, wherein, the connecting pipe (310) is installed on the side wall of the connector (230), a threaded connector (320) is installed on one end of the connecting pipe (310), the threaded connector (320) is in threaded connection with the side wall of the connecting part (261), and the other end of the connecting pipe (310) is connected with the pressure pipe (250) through a flange.

7. The extrusion molding apparatus of claim 6, wherein a ball valve (330) for controlling the opening and closing state of the pressurizing pipe (250) is installed on the pressurizing pipe (250).

8. The extrusion molding equipment of the fire-retardant flat cable according to claim 1, wherein the die body (100) is provided with an air outlet pipe (210) on the side wall of the feeding head (190), the air outlet pipe (210) is communicated with the cavity (110), and a truncated cone-shaped air outlet (220) is formed at the connection part of the die body (100) and the air outlet pipe (210).

9. The extrusion molding apparatus of claim 1, wherein a first guide plate (130) and a second guide plate (140) are respectively installed at two sides of the mold body (100), the first guide plate (130) is horizontally provided with guide holes (150) for passing the wires at intervals, and the second guide plate (140) is horizontally provided with injection ports (160) at intervals.

10. The extrusion molding apparatus of claim 9, wherein a front cover (170) and a rear cover (180) are respectively disposed on two sides of the mold body (100), the front cover (170) and the rear cover (180) are both fixedly mounted on the mold body (100) by bolts, and the front cover (170) and the rear cover (180) are respectively used for tightly mounting the first guide plate (130) and the second guide plate (140) on the mold body (100).

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