Extrusion production equipment for cable outer protection plastic pipe

Abstract

The invention is suitable for the technical field of plastic pipe production, and provides extrusion production equipment for a cable outer protection plastic pipe. A support bar; the extruder is fixedly mounted at the top of the supporting rod; the extrusion die head is movably mounted on the left side of the extruder; the filter screen is movably arranged at the inner end of the extrusion die head; and a cutting and grinding structure. Compared with the prior art, the plastic pipe cutting and grinding device has the beneficial effects that the cutting and grinding structure attached to the extrusion die head is arranged on the left side of the extruder, so that during cutting, a notch is smoother, the front end of a plastic pipe located at an outlet of the extrusion die head can be ground, the surface of the plastic pipe becomes smoother, and the cutting and grinding effect is better. And the cutting and grinding structure can perform bidirectional grinding, so that the rear end of the cut plastic pipe can be ground, the front end and the rear end of the plastic pipe are kept smooth, and the effect of relieving the burden of post-treatment is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic pipe production, and in particular relates to extrusion production equipment for cable outer protective plastic pipes. Background Art

[0002] The cable outer protective plastic tube is an insulating protective tube that is sleeved on the surface of the cable to protect the cable and the people who come into contact with it.

[0003] When producing the cable outer protective plastic tube, the plastic extruder and the corresponding die are mainly used to melt the plastic, and then extrude it into a plastic tube in the die. Then, according to production needs, it is cut with a cutter. However, since the newly extruded plastic tube is relatively soft, it is easy to have an uneven cut when cutting with a cutter, and burrs are easy to appear at the cut, which leads to the need to grind both ends before putting it into use.

[0004] Therefore, how to provide an extrusion production device for cable outer protective plastic tube is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The object of the present invention is to provide an extrusion production device for a cable outer protective plastic tube, aiming to solve the problems mentioned in the background technology.

[0006] The present invention is achieved by providing an extrusion production device for a cable outer protective plastic tube, comprising:

[0007] Support rods;

[0008] An extruder, wherein the extruder is fixedly mounted on the top of the support rod;

[0009] An extrusion die head, wherein the extrusion die head is movably mounted on the left side of the extruder;

[0010] A filter screen, the filter screen being movably arranged at the inner end of the extrusion die head;

[0011] A cutting and grinding structure, wherein the cutting and grinding structure is arranged at the left end of the extruder, and the inner side of the cutting and grinding structure is arranged close to the extrusion die head;

[0012] A circulating cooling structure is provided at the outer end of the extrusion die head.

[0013] Preferably, the surface of the extrusion die is also provided with an exhaust structure, which includes an annular air pipe, an air filter frame, a filter box and an exhaust pump. The annular air pipe is fixedly installed on the outer end of the extrusion die surface, and an exhaust pipe is fixedly installed on the left side of the annular air pipe. The air filter frame is arranged on the front side of the circulating cooling structure, and the filter box and the exhaust pump are arranged inside the air filter frame from top to bottom. The lower end of the exhaust pipe passes through the surface of the air filter frame and is fixedly connected to the filter box.

[0014] Preferably, the cutting and grinding structure includes a lifting plate and a bidirectional grinding unit, a support frame is fixedly installed at the left end of the extruder, a storage box is movably placed at the lower end of the support frame), lifting screws are symmetrically arranged on the inner sides of the support frames at the front and rear sides, the lifting plate is movably installed on the surface of the lifting screw, and a cutter is movably installed at the bottom and is arranged in contact with the left side of the extrusion die head, and the bidirectional grinding unit is arranged in the middle of the lifting plate;

[0015] The bidirectional grinding unit includes a transmission gear ring and a bidirectional grinding disc. The transmission gear ring is movably installed in the middle of the lifting plate. The bidirectional grinding disc is meshingly installed in the middle of the bidirectional grinding disc. An electric gear is arranged in the middle of the front side of the top end of the lifting plate, and a transmission gear is arranged between the transmission gear ring and the transmission gear ring.

[0016] Preferably, the circulating cooling structure includes a return water cooling pipe, a water trough and a water storage tank. The water trough is opened in the middle of the outer end of the extrusion die, and the water storage tank is arranged below the extrusion die. A water pumping pipe is fixedly installed on the right side of the water storage tank and is fixedly connected to the top of the water trough. The return water cooling pipe is fixedly installed on the top of the water storage tank and is fixedly connected to the bottom of the water trough.

[0017] Preferably, the left and right edges of the bidirectional grinding disc are symmetrically provided with first grooves, the left and right surfaces of the lifting plate are symmetrically provided with second grooves, a limiting plate is movably placed inside the second groove, and the inner end of the limiting plate extends to the surface of the first groove to constrain the position of the bidirectional grinding disc.

[0018] Preferably, a first rotating rod is movably mounted in the middle of the extruder, and an extrusion screw blade is fixedly mounted on the surface of the first rotating rod.

[0019] Preferably, a delivery cylinder is fixedly installed on the top of the right side of the extruder, a second rotating rod is movably installed in the middle of the delivery cylinder, and breaking rods are arranged in a circular array on the surface.

[0020] Preferably, the return water cooling pipe is configured as an S-shaped bent pipe, and the return water cooling pipe is made entirely of heat-conducting material.

[0021] Preferably, the diameter of the annular air tube is equal to the inner diameter of the extrusion die head, and the outer side of the annular air tube is inclined.

[0022] Compared with the prior art, the beneficial effects of the present invention are: by arranging a cutting and grinding structure in contact with the extrusion die on the left side of the extruder, the incision is smoother during cutting, and the front end of the plastic tube at the outlet of the extrusion die can be polished to make its surface smoother, and the cutting and grinding structure can perform bidirectional polishing, so that the rear end of the cut plastic tube can be polished, so that the front and rear ends of the plastic tube remain smooth, thereby reducing the burden of subsequent processing.

[0023] By setting a circulating cooling structure at the outer end of the extrusion die head, the newly extruded plastic tube can be pre-cooled when extruding the plastic tube, thereby increasing the hardness of the newly extruded plastic tube, so that it can be cut smoothly during the subsequent cutting work, and the incision is smoother and convenient for grinding.

[0024] At the same time, by setting up an exhaust structure on the outside of the extrusion die, the gas discharged from the extrusion die can be sucked into the filter box, thereby reducing the pollution of the working environment by harmful gases generated when the plastic is melted. When the air is exhausted, the flow of surrounding air is driven, thereby further reducing the temperature of the newly extruded plastic pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 A schematic diagram of the overall appearance of an extrusion production device for a cable outer protective plastic tube provided by an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of a rear cross-sectional structure of an extrusion production device for a cable outer protective plastic tube provided in an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of a left-side cross-sectional structure of a cutting and grinding structure of an extrusion production equipment for a cable outer protective plastic tube provided by an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of a right side cross-sectional structure of an extrusion production device for a cable outer protective plastic tube provided in an embodiment of the present invention;

[0030] Figure 5 The embodiment of the present invention provides Figure 2 A schematic diagram of the enlarged structure of part A;

[0031] Figure 6 The embodiment of the present invention provides Figure 4 Schematic diagram of the enlarged structure of part B.

[0032] In the figure: 1-support rod, 2-extruder, 3-extrusion die head, 4-filter screen, 5-first rotating rod, 6-extrusion screw, 7-dispensing tube, 8-second rotating rod, 9-dispersing rod, 10-water storage tank, 11-return water cooling pipe, 12-water pumping pipe, 13-water trough, 14-air extraction pipe, 15-air filter frame, 16-filter box, 17-air extraction pump, 18-annular air pipe, 19-support frame, 20-storage box, 21-lifting screw, 22-lifting plate, 23-cutter, 24-bidirectional grinding disc, 25-electric gear, 26-transmission gear, 27-transmission gear ring, 28-first groove, 29-second groove, 30-limiting piece, DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 FIG. 1 is a schematic diagram of a structure of an extrusion production device for a cable outer protective plastic tube provided by an embodiment of the present invention, comprising:

[0036] Support rod 1;

[0037] Extruder 2, which is fixedly mounted on the top of the support rod 1;

[0038] An extrusion die head 3 is movably mounted on the left side of the extruder 2;

[0039] A filter screen 4, which is movably arranged at the inner end of the extrusion die head 3;

[0040] The circulating cooling structure is arranged at the outer end of the extrusion die head 3 .

[0041] In the embodiment of the present invention, when in use, the extruder 2 is started, so that the plastic raw material is heated, and then enters the extrusion die 3 through the filter screen 4 for molding and extrusion, and is cooled by the circulating cooling structure;

[0042] By setting a circulating cooling structure at the outer end of the extrusion die head 3, the plastic tube just extruded can be pre-cooled when extruding the plastic tube, thereby increasing the hardness of the plastic tube just extruded, so that it can be cut smoothly and the incision is smoother during the subsequent cutting work.

[0043] like Figure 1 , Figure 2 and Figure 5 As shown, as a preferred embodiment of the present invention, the surface of the extrusion die 3 is also provided with an exhaust structure, the exhaust structure includes an annular air pipe 18, an air filter frame 15, a filter box 16 and an exhaust pump 17, the annular air pipe 18 is fixedly installed on the outer end of the surface of the extrusion die 3, the exhaust pipe 14 is fixedly installed on the left side of the annular air pipe 18, the air filter frame 15 is arranged on the front side of the circulating cooling structure, the filter box 16 and the exhaust pump 17 are arranged from top to bottom inside the air filter frame 15, and the lower end of the exhaust pipe 14 passes through the surface of the air filter frame 15 and is fixedly connected with the filter box 16.

[0044] In the embodiment of the present invention, when in use, the air pump 17 at the lower end of the air filter frame 15 is started, and then the gas discharged from the extrusion die 3 is sucked into the filter box 16 through the air suction pipe 14 and the annular air pipe 18 for purification;

[0045] By providing an exhaust structure, the pollution of the working environment by harmful gases generated when the plastic is melted is reduced, and when the exhaust is performed, the flow of surrounding air is driven, thereby further reducing the temperature of the newly extruded plastic tube.

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, as a preferred embodiment of the present invention, the cutting and grinding structure includes a lifting plate 22 and a bidirectional grinding unit, a support frame 19 is fixedly installed at the left end of the extruder 2, a storage box 20 is movably placed at the lower end of the support frame 19, and lifting screws 21 are symmetrically arranged on the inner sides of the front and rear support frames 19, the lifting plate 22 is movably installed on the surface of the lifting screw 21, and a cutter 23 is movably installed at the bottom and is arranged in contact with the left side of the extrusion die 3, and the bidirectional grinding unit is arranged in the middle of the lifting plate 22;

[0047] The bidirectional grinding unit includes a transmission gear ring 27 and a bidirectional grinding disc 24. The transmission gear ring 27 is movably installed in the middle of the lifting plate 22. The bidirectional grinding disc 24 is meshingly installed in the middle of the bidirectional grinding disc 24. An electric gear 25 is arranged in the middle of the front side of the top end of the lifting plate 22, and a transmission gear 26 is arranged between the transmission gear ring 27.

[0048] In the embodiment of the present invention, when in use, the lifting screws 21 on both sides of the support frame 19 are started, so that the lifting plate 22 drives the cutter 23 to descend, and then the cutter 23 cuts the extruded plastic tube, and the bidirectional grinding disc 24 on the surface of the lifting plate 22 is aligned with the outlet of the extrusion die 3, and then the electric gear 25 is started, through the transmission gear 26 and the transmission gear ring 27, the bidirectional grinding disc 24 meshing in the middle of the transmission gear ring 27 is rotated, so that the front end of the plastic tube at the outlet of the extrusion die 3 is polished, making its surface smoother, thereby reducing the burden of subsequent processing, and because both sides of the bidirectional grinding disc 24 can be polished, when polishing the rear end of the plastic tube after the outer side is cut off, it is only necessary to pick up the rear end of the plastic tube and contact it with the front side of the bidirectional grinding disc 24, so that the rear end of the plastic tube is polished, thereby further reducing the difficulty and burden of subsequent processing.

[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, as a preferred embodiment of the present invention, the circulating cooling structure includes a return water cooling pipe 11, a water trough 13 and a water storage tank 10. The water trough 13 is opened in the middle of the outer end of the extrusion die 3. The water storage tank 10 is arranged below the extrusion die 3. A water pumping pipe 12 is fixedly installed on the right side of the water storage tank 10 and is fixedly connected to the top of the water trough 13. The return water cooling pipe 11 is fixedly installed on the top of the water storage tank 10 and is fixedly connected to the bottom of the water trough 13.

[0050] In the embodiment of the present invention, when in use, the water pumping pipe 12 in the water storage tank 10 is started, so that the coolant in the water storage tank 10 enters the top of the water trough 13, and then returns to the water storage tank 10 through the return cooling pipe 11 for circulation cooling, thereby pre-cooling the plastic pipe that has been formed outside the extrusion die 3;

[0051] By setting up a circulating cooling structure, the hardness of the newly extruded plastic tube can be increased, so that it can be cut smoothly and the incision is smoother during the subsequent cutting work.

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, as a preferred embodiment of the present invention, the edges of the left and right sides of the bidirectional grinding disc 24 are symmetrically provided with first grooves 28, the surfaces of the left and right sides of the lifting plate 22 are symmetrically provided with second grooves 29, and a limiting plate 30 is movably placed inside the second groove 29, and the inner end of the limiting plate 30 extends to the surface of the first groove 28, so as to constrain the position of the bidirectional grinding disc 24.

[0053] In the embodiment of the present invention, when in use, a first groove 28 is symmetrically opened on the edges of the left and right sides of the bidirectional grinding disc 24, and a second groove 29 is symmetrically opened on the surface of the left and right sides of the lifting plate 22, and then a limiting plate 30 is movably placed inside the second groove 29, and the inner end of the limiting plate 30 is extended to the surface of the first groove 28, so as to constrain the position of the bidirectional grinding disc 24 to prevent it from falling during work.

[0054] like Figure 2 and Figure 3 As shown, as a preferred embodiment of the present invention, a first rotating rod 5 is movably installed in the middle of the extruder 2, and an extrusion screw 6 is fixedly installed on the surface of the first rotating rod 5.

[0055] In the embodiment of the present invention, when in use, the first rotating rod 5 in the middle of the extruder 2 is started, so that the raw materials entering the extruder 2 are heated, and then the extrusion screw 6 can be moved from right to left for extrusion molding.

[0056] like Figure 2 and Figure 3 As shown, as a preferred embodiment of the present invention, a delivery cylinder 7 is fixedly installed on the top of the right side of the extruder 2, a second rotating rod 8 is movably installed in the middle of the delivery cylinder 7, and breaking rods 9 are arranged in a circular array on the surface.

[0057] In the embodiment of the present invention, when in use, the raw materials are poured into the delivery tube 7, and then the second rotating rod 8 is started to activate the breaking rod 9, thereby reducing the occurrence of residual raw materials accumulated in the delivery tube 7.

[0058] like Figure 1 , Figure 2 and Figure 4 As shown, as a preferred embodiment of the present invention, the return water cooling pipe 11 is configured as an S-shaped bend pipe, and the return water cooling pipe 11 is made entirely of heat-conducting material.

[0059] In the embodiment of the present invention, when in use, the return water cooling pipe 11 is set as an S-shaped bend pipe, and the return water cooling pipe 11 is made of heat-conducting material as a whole, so that when returning water, the temperature is reduced at the same time, thereby facilitating subsequent circulation cooling.

[0060] like Figure 1 , Figure 2 and Figure 5 As shown, as a preferred embodiment of the present invention, the diameter of the annular air pipe 18 is equal to the inner diameter of the extrusion die 3, and the outer side of the annular air pipe 18 is inclined.

[0061] In an embodiment of the present invention, when in use, by making the diameter value of the annular air pipe 18 equal to the inner diameter value of the extrusion die 3, and the outer side of the annular air pipe 18 is inclined, the air discharged from the extrusion die 3 can be fully absorbed, thereby achieving a better air purification effect.

[0062] The above embodiment of the present invention provides an extrusion production device for cable outer protective plastic tube. When in use, the raw material is poured into the delivery tube 7, and then the second rotating rod 8 is started to make the breaking rod 9 move, thereby reducing the occurrence of raw material residue accumulated in the delivery tube 7;

[0063] At the same time, the first rotating rod 5 in the middle of the extruder 2 is started to heat the raw material entering the extruder 2, and the raw material is moved from right to left through the extrusion screw 6, and then enters the extrusion die 3 through the filter screen 4 for molding and extrusion;

[0064] During extrusion, the water pumping pipe 12 in the water storage tank 10 is started at the same time, so that the coolant in the water storage tank 10 enters the top of the water trough 13, and then returns to the water storage tank 10 through the return water cooling pipe 11 for circulation cooling, thereby pre-cooling the plastic tube that has been formed outside the extrusion die 3, thereby increasing the hardness of the just-extruded plastic tube, so that it can be smoothly cut during the subsequent cutting work, and the incision is smoother;

[0065] At the same time, when the plastic tube is extruded, the air pump 17 at the lower end of the air filter frame 15 is started, and the gas discharged from the extrusion die 3 is sucked into the filter box 16 through the air suction pipe 14 and the annular air pipe 18, thereby reducing the pollution of the working environment by harmful gases generated when the plastic is melted, and when the air is pumped, the flow of the surrounding air is driven, thereby further reducing the temperature of the just-extruded plastic tube;

[0066] Then, the lifting screws 21 on both sides of the support frame 19 are started, so that the lifting plate 22 drives the cutter 23 to descend, and then the cutter 23 cuts the extruded plastic pipe, and the bidirectional grinding disc 24 on the surface of the lifting plate 22 is aligned with the outlet of the extrusion die 3, and then the electric gear 25 is started, through the transmission gear 26 and the transmission gear ring 27, the bidirectional grinding disc 24 meshing in the middle of the transmission gear ring 27 is rotated, so that the front end of the plastic pipe at the outlet of the extrusion die 3 is polished, making its surface smoother, thereby reducing the burden of later processing, and because both sides of the bidirectional grinding disc 24 can be polished, when polishing the rear end of the plastic pipe after the outer side is cut off, it is only necessary to pick up the rear end of the plastic pipe and contact it with the front side of the bidirectional grinding disc 24, so as to polish the rear end of the plastic pipe, thereby further reducing the difficulty and burden of later processing.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion production equipment for cable outer protective plastic tube, characterized in that: include; Support rod (1); An extruder (2), wherein the extruder (2) is fixedly mounted on the top of the support rod (1); An extrusion die head (3), wherein the extrusion die head (3) is movably mounted on the left side of the extruder (2); A filter screen (4), wherein the filter screen (4) is movably arranged at the inner end of the extrusion die head (3); A cutting and grinding structure, wherein the cutting and grinding structure is arranged at the left end of the extruder (2) and the inner side of the cutting and grinding structure is arranged in contact with the extrusion die head (3); A circulating cooling structure is arranged at the outer end of the extrusion die head (3).

2. The extrusion production equipment for cable outer protective plastic tube according to claim 1 is characterized in that: The surface of the extrusion die (3) is also provided with an exhaust structure, which includes an annular air pipe (18), an air filter frame (15), a filter box (16) and an exhaust pump (17). The annular air pipe (18) is fixedly mounted on the outer end of the surface of the extrusion die (3). An exhaust pipe (14) is fixedly mounted on the left side of the annular air pipe (18). The air filter frame (15) is arranged on the front side of the circulating cooling structure. The filter box (16) and the exhaust pump (17) are arranged inside the air filter frame (15) from top to bottom. The lower end of the exhaust pipe (14) passes through the surface of the air filter frame (15) and is fixedly connected to the filter box (16).

3. The extrusion production equipment for cable outer protective plastic tube according to claim 1, characterized in that: The cutting and grinding structure includes a lifting plate (22) and a bidirectional grinding unit. A support frame (19) is fixedly installed at the left end of the extruder (2). A storage box (20) is movably placed at the lower end of the support frame (19). Lifting screws (21) are symmetrically arranged on the inner sides of the support frames (19) at the front and rear sides. The lifting plate (22) is movably installed on the surface of the lifting screw (21), and a cutter (23) is movably installed at the bottom and is arranged in contact with the left side of the extrusion die head (3). The bidirectional grinding unit is arranged in the middle of the lifting plate (22); The bidirectional grinding unit comprises a transmission gear ring (27) and a bidirectional grinding disc (24), wherein the transmission gear ring (27) is movably mounted in the middle of the lifting plate (22), and the bidirectional grinding disc (24) is meshingly mounted in the middle of the bidirectional grinding disc (24), and an electric gear (25) is arranged in the middle of the front side of the top end of the lifting plate (22), and a transmission gear (26) is arranged between the transmission gear ring (27).

4. The extrusion production equipment for cable outer protective plastic tube according to claim 1, characterized in that: The circulating cooling structure comprises a return water cooling pipe (11), a water trough (13) and a water storage tank (10); the water trough (13) is arranged in the middle of the outer end of the extrusion die (3); the water storage tank (10) is arranged below the extrusion die (3); a water pumping pipe (12) is fixedly installed on the right side of the water storage tank (10) and is fixedly connected to the top of the water trough (13); the return water cooling pipe (11) is fixedly installed on the top of the water storage tank (10) and is fixedly connected to the bottom of the water trough (13).

5. The extrusion production equipment for cable outer protective plastic tube according to claim 3, characterized in that: The left and right edges of the bidirectional grinding disc (24) are symmetrically provided with first grooves (28), the left and right surfaces of the lifting plate (22) are symmetrically provided with second grooves (29), a limiting plate (30) is movably placed inside the second groove (29), the inner end of the limiting plate (30) extends to the surface of the first groove (28), and the position of the bidirectional grinding disc (24) is constrained.

6. The extrusion production equipment for cable outer protective plastic tube according to claim 1, characterized in that: A first rotating rod (5) is movably mounted in the middle of the extruder (2), and an extrusion screw blade (6) is fixedly mounted on the surface of the first rotating rod (5).

7. The extrusion production equipment for cable outer protective plastic tube according to claim 1, characterized in that: A delivery cylinder (7) is fixedly installed on the top of the right side of the extruder (2), a second rotating rod (8) is movably installed in the middle of the delivery cylinder (7), and a scattering rod (9) is arranged in a circular array on the surface.

8. The extrusion production equipment for cable outer protective plastic tube according to claim 4, characterized in that: The return water cooling pipe (11) is configured as an S-shaped bent pipe, and the return water cooling pipe (11) is entirely made of heat-conducting material.

9. The extrusion production equipment for cable outer protective plastic tube according to claim 2, characterized in that: The diameter of the annular air pipe (18) is equal to the inner diameter of the extrusion die head (3), and the outer side of the annular air pipe (18) is inclined.

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