An extruder for wire production with easy mold changing

Abstract

This utility model relates to the field of wire extrusion machine technology, specifically to a wire production extruder with an easy-to-change mold, including an extruder head, an extrusion mold mounted on the outside of the extruder head, a locking post slidably inserted into the outside of the extrusion mold, and a locking spring fixedly mounted on the outside of the locking post for driving it to fix the extrusion mold. An electromagnet is mounted on the outside of the extruder head for moving the locking post out of the extrusion mold. When changing the extrusion mold, the electromagnet is energized and becomes magnetic, driving the locking post to fully enter the receiving chamber and disengage from the fixing hole. The locking spring is compressed, the worker removes the existing extrusion mold, and then installs the new extrusion mold on the outside of the extruder head. When the electromagnet is de-energized and loses its magnetism, the elastic force of the locking spring drives the locking post to insert into the fixing hole, thus fixing the extrusion mold. The worker does not need to repeatedly turn the bolts, reducing the labor intensity of the worker, and the efficiency of extrusion mold replacement is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of wire extrusion machine technology, specifically to an extrusion machine for wire production that is easy to change molds. Background Technology

[0002] Extruders for wire and cable production are core equipment in the wire and cable manufacturing industry. Their core principle is to melt and plasticize plastic granules using high temperature and pressure, then continuously and uniformly coat the surface of a metal conductor through a precision die, forming an insulation or sheath layer. This equipment mainly consists of an extrusion system, a transmission system, a heating and cooling system, a control system, and key components such as the die head and mold. The screw rotates inside the barrel, responsible for conveying, compacting, melting, and metering the plastic; the heating and cooling system ensures the material is at the optimal processing temperature; and the control system precisely regulates the temperature, screw speed, and traction speed to ensure product quality stability. The performance of the extruder directly determines the insulation strength, thickness uniformity, surface finish, and production efficiency of the wire. It is an indispensable basic manufacturing equipment in many fields such as modern power transmission, communications, home appliances, and the automotive industry. Different types of wires have significantly different conductor diameters and insulation or sheath thicknesses, requiring the use of appropriately sized molds to change the flow channel dimensions of the extruded plastic, thereby precisely controlling the thickness and outer diameter of the coating layer.

[0003] In the existing technology, some extrusion dies are connected to the die head by bolts. When changing product specifications, the die needs to be replaced. Operators must use large wrenches to loosen and tighten multiple large bolts one by one. This process is not only extremely physically demanding, but also very time-consuming. It severely limits the production flexibility of the equipment, prolongs downtime, and reduces overall production efficiency. Utility Model Content

[0004] To overcome the above-mentioned defects, the present invention provides an extruder for wire production that facilitates mold replacement, solving the technical problem of low mold replacement efficiency caused by the reliance on bolts to fix the die head and mold in the prior art.

[0005] An extruder for wire production with easy mold replacement includes an extruder head, an extrusion mold mounted on the outside of the extruder head, and a locking post slidably inserted into the outside of the extrusion mold. A locking spring is fixedly installed on the outside of the locking post to drive it to fix the extrusion die; An electromagnet is installed on the outside of the extruder head to move the locking pin out of the extrusion die.

[0006] Preferably, the outer side of the extrusion die has multiple fixing holes, and the fixing holes and locking posts are slidably inserted into each other, with an arc-shaped correction slope at the end of the locking posts.

[0007] Preferably, a locking block is fixedly installed on the outer side of the extruder head, and a storage compartment is opened on the inner side of the locking block, with a locking post slidably installed on the inner side of the storage compartment.

[0008] Preferably, the locking spring is fixedly installed between the locking block and the locking post.

[0009] Preferably, the top of the locking block has a through-hole for ventilation.

[0010] Preferably, the electromagnet is fixedly installed inside the storage compartment.

[0011] Preferably, a control button is fixedly installed on the outside of the extruder head, and the control button is electrically connected to the electromagnet.

[0012] Preferably, the control button is surrounded by a protective cover, which is hinged to the outside of the extruder head.

[0013] Preferably, a convenient protrusion is fixedly installed on the outer side of the protective cover, and a permanent magnet is fixedly installed on the bottom of the protective cover.

[0014] Preferably, the outer side of the extrusion die is provided with a positioning groove, and a positioning block is slidably engaged with the inner side of the positioning groove. The positioning block is fixedly installed on the outer side of the extruder head. An oil tank is provided on the inner side of the locking block, and a piston plate is slidably installed on the inner side of the oil tank. A return spring is fixedly installed between the piston plate and the inner side of the locking block, and an electromagnet passes through the end of the piston plate. The outer side of the locking block is connected to and fixedly installed with an outlet check valve and an inlet check valve. The inlet check valve is connected to an external lubricating oil tank through a pipe. Multiple nozzles are embedded and fixedly installed on the inner side of the locking block. The nozzles are connected to the outlet check valve through pipes.

[0015] The beneficial effects of this utility model are as follows: In this invention, when replacing the extrusion mold, the electromagnet is energized and becomes magnetic, which drives the locking pin to fully enter the storage compartment and disengage from the fixing hole. The locking spring is compressed, and the worker removes the existing extrusion mold and then installs the new extrusion mold on the outside of the extruder head. When the electromagnet is de-energized and loses its magnetism, the elastic force of the locking spring drives the locking pin to insert into the fixing hole, thus fixing the extrusion mold. The worker does not need to repeatedly turn the bolts, reducing the labor intensity of the worker, and the efficiency of extrusion mold replacement is greatly improved. When the locking pin enters the storage compartment, it squeezes the piston plate, compressing the return spring. This causes the lubricating oil inside the oil tank to be sprayed from the outlet check valve, pipe, and nozzle to the outside of the locking pin. When the locking pin is inserted into the fixing hole, the lubricating oil can effectively reduce the frictional wear of the locking pin and the fixing hole, extending their service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0017] Figure 1 A schematic diagram of the extruder head connection for an extruder used in wire production, which facilitates mold replacement; Figure 2 A schematic diagram of the extrusion die structure of an extruder for wire production that is easy to change dies; Figure 3 A schematic diagram of the protective cover structure for an extruder used in wire production, which facilitates mold replacement; Figure 4 A schematic diagram of the locking block connection of an extruder for wire production that facilitates mold changing; Figure 5 This is a schematic diagram of the internal structure of the locking block of an extruder for wire production, which is designed for easy mold changing.

[0018] In the picture: 1. Extruder head; 2. Extrusion die; 3. Fixing hole; 4. Locking block; 5. Ventilation hole; 6. Locking post; 7. Locking spring; 8. Storage compartment; 9. Electromagnet; 10. Protective cover; 11. Convenience protrusion; 12. Permanent magnet; 13. Control button; 14. Arc-shaped correction slope; 15. Positioning slot; 16. Positioning block; 17. Nozzle; 18. Liquid outlet check valve; 19. Liquid inlet check valve; 20. Piston plate; 21. Return spring; 22. Oil tank. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0020] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figure 1 , Figure 2 As shown, an extruder for wire production that facilitates mold replacement includes an extruder head 1, an extrusion mold 2 installed on the outside of the extruder head 1, a plurality of fixing holes 3 opened on the outside of the extrusion mold 2, and a locking post 6 slidably inserted into the outside of the extrusion mold 2, with the fixing holes 3 and the locking post 6 slidably inserted into each other.

[0026] Furthermore, such as Figure 5 As shown, the locking post 6 has an arc-shaped correction slope 14 at its end. When there is a small mismatch between the fixing hole 3 and the locking post 6, the locking post 6 moves by using the arc-shaped correction slope 14 to press the extrusion mold 2 to the set position, preventing the fixing hole 3 and the locking post 6 from having a rigid collision.

[0027] Furthermore, such as Figure 5As shown, an electromagnet 9 is installed on the outside of the extruder head 1 to move the locking post 6 out of the extrusion die 2. When the electromagnet 9 is energized, it becomes magnetic, and the attraction force drives the locking post 6 to disengage from the fixing hole 3.

[0028] Furthermore, such as Figure 5 As shown, a locking block 4 is fixedly installed on the outer side of the extruder head 1, and a storage compartment 8 is opened on the inner side of the locking block 4. The locking post 6 is slidably installed on the inner side of the storage compartment 8, and the electromagnet 9 is fixedly installed on the inner side of the storage compartment 8.

[0029] In this embodiment, the electromagnet 9 is energized and becomes magnetic, which drives the locking pin 6 to fully enter the storage compartment 8 and disengage from the fixing hole 3, allowing the staff to remove the existing extrusion mold 2.

[0030] Furthermore, such as Figure 5 As shown, a locking spring 7 for driving the locking post 6 to fix the extrusion mold 2 is fixedly installed on the outside of the locking post 6. The locking spring 7 is fixedly installed between the locking block 4 and the locking post 6.

[0031] In this embodiment, the operator installs the new extrusion mold 2 on the outside of the extruder head 1. When the electromagnet 9 is de-energized and loses its magnetism, the spring force of the locking spring 7 drives the locking pin 6 to insert into the fixing hole 3, thereby fixing the extrusion mold 2. The operator does not need to repeatedly turn the bolts, reducing the labor intensity of the operator, and the replacement efficiency of the extrusion mold 2 is greatly improved.

[0032] Furthermore, such as Figure 1 , Figure 2 As shown, a positioning slot 15 is provided on the outer side of the extrusion mold 2, and a positioning block 16 is slidably engaged on the inner side of the positioning slot 15. The positioning block 16 is fixedly installed on the outer side of the extruder head 1. The positioning block 16 and the positioning slot 15 cooperate to limit the installation angle of the extrusion mold 2 and prevent the operator from installing it incorrectly.

[0033] Furthermore, such as Figure 4 As shown, a ventilation hole 5 is provided through the top of the locking block 4, allowing the air inside the locking block 4 to communicate with the outside, thus preventing it from affecting the movement of the locking pin 6.

[0034] Furthermore, such as Figure 1 , Figure 3 As shown, a control button 13 is fixedly installed on the outside of the extruder head 1. The control button 13 is electrically connected to the electromagnet 9. The control button 13 facilitates the operator to control the energization and de-energization of the electromagnet 9.

[0035] Furthermore, such as Figure 3As shown, a protective cover 10 is installed around the control button 13. The protective cover 10 is hinged to the outside of the extruder head 1. A convenient protrusion 11 is fixedly installed on the outside of the protective cover 10 to facilitate the operator to rotate the protective cover 10. A permanent magnet 12 is fixedly installed at the bottom of the protective cover 10. The attraction of the permanent magnet 12 fixes the protective cover 10 to the outside of the extruder head 1 relatively stably, reducing the occurrence of accidental touch or pressing of the control button 13 under non-human circumstances.

[0036] Furthermore, such as Figure 5 As shown, an oil reservoir 22 is provided on the inner side of the locking block 4, and a piston plate 20 is slidably installed on the inner side of the oil reservoir 22. A return spring 21 is fixedly installed between the piston plate 20 and the inner side of the locking block 4 to drive the piston plate 20 to return to its original position. An electromagnet 9 passes through the end of the piston plate 20.

[0037] Furthermore, such as Figure 4 , Figure 5 As shown, the locking block 4 is connected and fixedly installed with an outlet check valve 18 and an inlet check valve 19. The inlet check valve 19 is connected to an external lubricating oil tank through a pipe and is used to replenish lubricating oil to the oil tank 22. Multiple nozzles 17 are embedded and fixedly installed on the inner side of the locking block 4 and are used to spray lubricating oil onto the locking column 6. The nozzles 17 are connected to the outlet check valve 18 through a pipe. The top of the locking block 4 has a through hole that cooperates with the piston plate 20 to prevent air pressure from hindering the movement of the piston plate 20.

[0038] In this embodiment, when the locking pin 6 enters the storage compartment 8, it squeezes the piston plate 20 and compresses the return spring 21, causing the lubricating oil inside the oil tank 22 to be sprayed from the liquid outlet check valve 18, pipe, and nozzle 17 to the outside of the locking pin 6. When the locking pin 6 is inserted into the fixing hole 3, the lubricating oil can effectively reduce the frictional wear of the locking pin 6 and the fixing hole 3, and extend their service life. When the locking pin 6 is inserted into the fixing hole 3, the elastic force of the return spring 21 drives the piston plate 20 to return to its original position, and the lubricating oil from the external oil tank is replenished into the oil tank 22 through the pipeline and the liquid inlet check valve 19.

[0039] Specific workflow: When replacing the extrusion mold 2, the staff uses the convenient protrusion 11 to lift the protective cover 10, press the control button 13, the control button 13 sends an electrical signal to the data processor, the data processor sends an electrical signal to the electromagnet 9, the electromagnet 9 is energized and becomes magnetic, which drives the locking post 6 to fully enter the storage compartment 8 and disengage from the fixing hole 3. The locking spring 7 is compressed, and the staff removes the existing extrusion mold 2. The staff installs the new extrusion mold 2 on the outside of the extruder head 1. The positioning block 16 is inserted into the positioning slot 15. The staff presses the control button 13 again, the electromagnet 9 is de-energized and loses its magnetism. The elastic force of the locking spring 7 drives the locking pin 6 to insert into the fixing hole 3, thereby fixing the extrusion mold 2. The staff does not need to repeatedly turn the bolts, reducing the labor intensity of the staff, and the replacement efficiency of the extrusion mold 2 is greatly improved.

[0040] The staff rotates the protective cover 10 closer to the extruder head 1. The attraction of the permanent magnet 12 fixes the protective cover 10 relatively stably on the outside of the extruder head 1, reducing the occurrence of accidental touch or pressing of the control button 13 under non-human circumstances.

[0041] When the locking pin 6 enters the storage compartment 8, it squeezes the piston plate 20 and compresses the return spring 21, causing the lubricating oil inside the oil tank 22 to be sprayed from the liquid outlet check valve 18, pipe, and nozzle 17 to the outside of the locking pin 6. When the locking pin 6 is inserted into the fixing hole 3, the lubricating oil can effectively reduce the frictional wear of the locking pin 6 and the fixing hole 3, and extend their service life. When the locking pin 6 is inserted into the fixing hole 3, the elastic force of the return spring 21 drives the piston plate 20 to return to its original position, and the lubricating oil from the external oil tank is replenished into the oil tank 22 through the pipeline and the liquid inlet check valve 19.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An extruder for wire production with easy mold replacement, comprising an extruder head (1), wherein an extrusion mold (2) is mounted on the outside of the extruder head (1), characterized in that: A locking post (6) is slidably inserted into the outside of the extrusion die (2); A locking spring (7) is fixedly installed on the outside of the locking post (6) to drive it to fix the extrusion mold (2); An electromagnet (9) is installed on the outside of the extruder head (1) to remove the locking pin (6) from the extrusion die (2).

2. The extruder for wire production with easily changeable molds as described in claim 1, characterized in that: The extrusion die (2) has multiple fixing holes (3) on its outer side. The fixing holes (3) and the locking post (6) are slidably inserted and engaged. The end of the locking post (6) has an arc-shaped correction slope (14).

3. The extruder for wire production with easily changeable molds as described in claim 1, characterized in that: A locking block (4) is fixedly installed on the outside of the extruder head (1), and a storage compartment (8) is opened on the inside of the locking block (4). The locking column (6) is slidably installed on the inside of the storage compartment (8).

4. The extruder for wire production with easily changeable molds as described in claim 3, characterized in that: The locking spring (7) is fixedly installed between the locking block (4) and the locking post (6).

5. The extruder for wire production with easily changeable molds as described in claim 3, characterized in that: The top of the locking block (4) has a through-hole (5).

6. The extruder for wire production with easily changeable molds according to claim 3, characterized in that: The electromagnet (9) is fixedly installed inside the storage compartment (8).

7. The extruder for wire production with easily changeable molds according to claim 1, characterized in that: A control button (13) is fixedly installed on the outside of the extruder head (1), and the control button (13) is electrically connected to the electromagnet (9).

8. An extruder for wire production with easily changeable molds as described in claim 7, characterized in that: The control button (13) is surrounded by a protective cover (10), which is hinged to the outside of the extruder head (1).

9. An extruder for wire production with easily changeable molds as described in claim 8, characterized in that: A convenient protrusion (11) is fixedly installed on the outside of the protective cover (10), and a permanent magnet (12) is fixedly installed on the bottom of the protective cover (10).

10. An extruder for wire production with easily changeable molds according to claim 3, characterized in that: The extrusion die (2) has a positioning slot (15) on the outside, and a positioning block (16) is slidably installed on the inside of the positioning slot (15). The positioning block (16) is fixedly installed on the outside of the extruder head (1). An oil reservoir (22) is provided on the inner side of the locking block (4), and a piston plate (20) is slidably installed on the inner side of the oil reservoir (22). A return spring (21) is fixedly installed between the piston plate (20) and the inner side of the locking block (4), and an electromagnet (9) passes through the end of the piston plate (20). The locking block (4) is connected to and fixedly installed with an outlet check valve (18) and an inlet check valve (19). The inlet check valve (19) is connected to the external lubricating oil tank through a pipe. Multiple nozzles (17) are embedded and fixedly installed on the inner side of the locking block (4). The nozzles (17) are connected to the outlet check valve (18) through a pipe.

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