Stranded wire injection mold

Abstract

The utility model discloses a stranded wire injection mold which comprises an injection molding assembly, a mold strip assembly and a wire supporting assembly, and the injection molding assembly comprises an upper mold, a lower mold and an injection molding pipe; the die strip assembly can be clamped with the wire supporting assembly and is mounted between the upper die and the lower die; the mold strip assembly comprises a mold strip, a fixing plate, a clamping plate, an adjusting piece, a rotating shaft piece and a fastening piece. The wire supporting assembly comprises a bottom plate, a first wire supporting block, a second wire supporting block and a positioning block; when the mold strip assembly is clamped with the wire supporting assembly, the clamping plate and the fixing plate are used for fixing a cable; when the mold strip assembly is installed between the upper mold and the lower mold, the distance between the mold strip and the fixing plate is increased, the mold strip assembly is used for straightening the cable, and the injection molding assembly is used for injection molding of an insulating layer of the cable in the straightened state. According to the utility model, the mold strip assembly is arranged, and the adjusting piece in the mold strip assembly is utilized to straighten the stranded cable, so that the outer insulating layer of the cable is subjected to injection molding in a straightened state, and the phenomenon of explosion of the stranded cable is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, and particularly relates to a stranded wire injection mold. Background Art

[0002] A stranded wire is a wire made by tightly winding multiple metal wires (usually copper or aluminum) together according to certain rules and methods. This structure can improve the mechanical strength and tensile resistance of the wire, reduce resistance and improve electrical conductivity, and is widely used in fields such as power transmission, communication cables, and electrical equipment connections. The production process of stranded wires generally includes four steps: wire drawing, stranding, annealing, and insulation. Among them, the insulation process is the final process in production and also the most critical process, which plays a crucial role in ensuring the performance and safety of the cable.

[0003] In the prior art, the insulation process includes the following steps: 1. Selecting a suitable insulation material: Select a suitable insulation material according to the application environment and performance requirements of the stranded wire; 2. Extrusion of the insulation layer: Heat and melt the insulation material through an extruder and evenly extrude it to cover the stranded conductor to form a continuous insulation layer; 3. Cooling and curing: The extruded hot melt insulation material needs to be cooled through a cooling device to solidify and form, ensuring the physical and chemical properties of the insulation layer; 4. Verification and quality inspection: Verify the thickness, uniformity, etc. of the insulation layer to ensure that it meets the design requirements and pass the necessary quality inspections. Such a process is prone to cause the phenomenon of wire breakage in the stranded wire. Summary of the Utility Model

[0004] In view of this, the purpose of the present utility model is to overcome the problems existing in the prior art, and provide a stranded wire injection mold. By setting a die bar assembly and using an adjusting member in the die bar assembly, the stranded cable is straightened, and the outer insulation layer is injected while the cable is in a straightened state, thereby avoiding the phenomenon of wire breakage in the stranded wire.

[0005] To achieve the above technical purpose and reach the above technical effect, the present utility model is realized through the following technical solutions:

[0006] A stranded wire injection mold includes an injection component, a die bar component, and a wire supporting component;

[0007] The injection component includes an upper die, a lower die, and an injection pipe. The upper die and the lower die are arranged corresponding to each other up and down. When the upper die and the lower die are closed, an injection cavity is formed between the upper die and the lower die, and the injection pipe is arranged in the injection cavity; the die bar component can be used to be clamped with the wire supporting component and installed between the upper die and the lower die;

[0008] The mold bar assembly includes a mold bar, a fixing plate, a clamping plate, an adjusting member, a rotating shaft member and a fastening member. The clamping plate is connected to the upper end of the fixing plate through the rotating shaft member. A first wire groove is formed between the clamping plate and the fixing plate. The mold bar is connected to the fixing plate through the adjusting member. The adjusting member is used to adjust the distance between the mold bar and the fixing plate. The mold bar is provided with a second wire groove;

[0009] The wire supporting assembly is arranged on one side of the injection molding assembly. The wire supporting assembly includes a bottom plate, a first wire supporting block, a second wire supporting block and a positioning block. The first wire supporting block, the positioning block and the second wire supporting block are arranged in sequence on the upper end surface of the bottom plate. The positioning block is provided with a third wire groove;

[0010] When the mold bar assembly is clamped with the wire supporting assembly, the first wire groove, the third wire groove and the second wire groove are arranged in sequence and are used for the wire to pass through in sequence. The clamping plate and the fixing plate are used to fix the wire; when the mold bar assembly is installed between the upper mold and the lower mold, the distance between the mold bar and the fixing plate is increased. The mold bar assembly is used to straighten the wire, and the injection molding assembly is used to inject the insulating layer of the straightened wire.

[0011] Further, the adjusting member includes a pin and a spring. The number of the pins and the springs is two. Both sides of the fixing plate are oppositely arranged with the mold bar through the pins. The spring is sleeved on the pin.

[0012] Further, a first clamping groove for clamping the rotating shaft member is provided at one end of the fixing plate and the clamping plate. The rotating shaft member includes a rotating shaft block and a first shaft pin. One end of the rotating shaft block is fixedly connected to the fixing plate, and the other end of the rotating shaft block is connected to the clamping plate through the first shaft pin; the fixing plate and the clamping plate are connected through the rotating shaft member, and the clamping plate is rotatable relative to the fixing plate.

[0013] Further, a second clamping groove for clamping the fastening member is provided at the other end of the fixing plate and the clamping plate. The fastening member includes a wrench and a second shaft pin. One end of the wrench is rotatably connected to the fixing plate through the second shaft pin. The wrench is rotatable relative to the fixing plate and is used to tightly connect the clamping plate and the fixing plate.

[0014] Further, one end of the fixing plate is rotatably connected to one end of the clamping plate through the rotating shaft member, and the other end of the fixing plate is tightly connected to the other end of the clamping plate through the fastening member.

[0015] Further, the upper mold further includes a first groove and a second groove, and the lower mold further includes a third groove and a fourth groove; when the mold bar assembly is installed between the upper mold and the lower mold, the mold bar is clamped in a first positioning groove formed by the cooperation of the first groove and the third groove, the clamping plate is clamped in the second groove, and the fixing plate is clamped in the fourth groove.

[0016] Further, the cable supporting component further includes a second positioning groove and a third positioning groove. The second positioning groove is located between the first cable supporting block and the positioning block, and the third positioning groove is located between the positioning block and the second cable supporting block. When the die bar component is clamped with the cable supporting component, the die bar is clamped in the second positioning groove, and the fixing plate is clamped in the third positioning groove.

[0017] Further, the injection molding component further includes a first pressing block and a second pressing block. The first pressing block penetrates through the upper die, and the second pressing block penetrates through the lower die. The second pressing block is provided with a fourth wire groove, and the lower die is provided with a fifth wire groove. When the die bar component is installed between the upper die and the lower die, the first wire groove, the fourth wire groove, the fifth wire groove, and the second wire groove are arranged in sequence and used for the cable to pass through. The first pressing block is used to flatten the cable.

[0018] Further, the injection molding component further includes an upper mounting plate and a lower mounting plate. The upper mounting plate is arranged on the upper end surface of the upper die, and the lower mounting plate is arranged on the lower end surface of the lower die.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] The present utility model straightens the cable by using the adjusting member in the die bar component. First, the stranded cable is installed in the cable supporting component, then the die bar component is clamped with the cable supporting component, and the pre-stranded cable is transferred and installed into the die bar component. After the die bar component is separated from the cable supporting component, the adjusting member straightens the stranded cable. Then, the die bar component is installed between the upper die and the lower die, and the upper and lower dies are closed. The injection molding component injects an insulating layer onto the straightened cable. After the injection molding is completed, the die bar component is separated from the injection molding component, and the cable returns to the stranded state, completing the injection molding process for the stranded wire. The process flow in the present utility model can prevent the cable from bursting due to inappropriate cable tension and improve the performance stability of the stranded wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall structural schematic diagram of the present utility model;

[0022] Figure 2 is the structural schematic diagram of the injection molding component in the present utility model;

[0023] Figure 3 is the exploded schematic diagram of the injection molding component in the present utility model;

[0024] Figure 4 is the structural schematic diagram of the die bar component in the present utility model;

[0025] Figure 5 is the exploded schematic diagram of the die bar component in the present utility model;

[0026] Figure 6 is the structural schematic diagram of the cable supporting component in the present utility model;

[0027] Figure 7 It is an exploded schematic view when the injection molding component and the die bar component are used in combination in the present utility model.

[0028] The reference numerals in the drawings are as follows:

[0029] 1 - injection molding component, 11 - upper die, 12 - lower die, 13 - injection molding pipe, 14 - first groove, 15 - second groove, 16 - third groove, 17 - fourth groove, 18 - first pressing block, 19 - second pressing block, 110 - fourth wire groove, 111 - fifth wire groove, 112 - upper mounting plate, 113 - lower mounting plate;

[0030] 2 - die bar component, 21 - die bar, 22 - fixing plate, 23 - clamping plate, 24 - first wire groove, 25 - second wire groove, 26 - pin, 27 - spring, 28 - first clamping groove, 29 - rotating shaft block, 210 - first shaft pin, 211 - second clamping groove, 212 - wrench, 213 - second shaft pin;

[0031] 3 - wire supporting component, 31 - bottom plate, 32 - first wire supporting block, 33 - second wire supporting block, 34 - positioning block, 35 - third wire groove, 36 - second positioning groove, 37 - third positioning groove. Detailed implementation manners

[0032] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the embodiments does not limit the present utility model.

[0033] Embodiment

[0034] As Figure 1-7 shown, this embodiment discloses a stranded wire injection molding die, including an injection molding component 1, a die bar component 2 and a wire supporting component 3;

[0035] The injection molding component 1 includes an upper die 11, a lower die 12 and an injection molding pipe 13. The upper die 11 and the lower die 12 are arranged corresponding to each other up and down. When the upper die 11 and the lower die 12 are closed, an injection molding cavity is formed between the upper die 11 and the lower die 12, and the injection molding pipe 13 is arranged in the injection molding cavity; the die bar component 2 can be used for being clamped with the wire supporting component 3 and installed between the upper die 11 and the lower die 12;

[0036] The die bar component 2 includes a die bar 21, a fixing plate 22, a clamping plate 23, an adjusting member, a rotating shaft member and a fastening member. The clamping plate 23 is connected to the upper end of the fixing plate 22. A first wire groove 24 is formed between the clamping plate 23 and the fixing plate. The die bar 21 is connected to the fixing plate 22 through the adjusting member. The adjusting member is used to adjust the distance between the die bar 21 and the fixing plate 22. The die bar 21 is provided with a second wire groove 25;

[0037] The cable supporting component 3 is arranged on one side of the injection molding component 1. The cable supporting component 3 includes a bottom plate 31, a first cable supporting block 32, a second cable supporting block 33 and a positioning block 34. The first cable supporting block 32, the positioning block 34 and the second cable supporting block 33 are arranged in sequence on the upper end surface of the bottom plate 31. The positioning block 34 is provided with a third wire groove 35.

[0038] When the die bar component 2 is clamped with the cable supporting component 3, the first wire groove 24, the third wire groove 35 and the second wire groove 25 are arranged in sequence and used for the cable to pass through in sequence. The clamping plate 23 and the fixing plate 22 are used to fix the cable. When the die bar component 2 is installed between the upper die 11 and the lower die 12, the distance between the die bar 21 and the fixing plate 22 is increased. The die bar component 2 is used to straighten the cable, and the injection molding component 1 is used to inject the insulating layer of the cable in the straightened state.

[0039] By arranging the die bar component 2 and the cable supporting component 3, when the die bar component 2 is clamped with the cable supporting component 3, the cable in the stranded state is installed in the die bar component 2; when the die bar component 2 is taken out from the cable supporting component 3, the cable is straightened; by arranging the die bar component 2 and the injection molding component 1, the stranded wire is straightened by the adjusting member in the die bar component 2, and the injection molding component 1 injects the cable in the straightened state. After the injection molding is completed, the cable is taken out, and the cable automatically returns to the stranded state. The injection mold in the present utility model changes the traditional injection molding method for stranded cables. First, the stranded cable is straightened, and then the insulating layer of the cable in the straightened state is injected, so as to prevent the occurrence of wire breakage phenomenon due to too large or too small cable tension during the injection molding process.

[0040] Further, the adjusting member includes a plug pin 26 and a spring 27. The number of the plug pins 26 and the springs 27 is two. Both sides of the fixing plate 22 are oppositely arranged with the die bar 21 through the plug pins 26, and the spring 27 is sleeved on the plug pin 26. By arranging the adjusting member, the distance between the die bar 21 and the fixing plate 22 can be changed by compressing or stretching the spring 27. When the die bar component 2 needs to be fixed to the cable supporting component 3, the spring 27 is compressed, the die bar component 2 is clamped to the cable supporting component 3, and the cable passes through the first wire groove 24, the third wire groove 35 and the second wire groove 25 in sequence. The cable in the stranded state is installed in the die bar component 2; when the die bar component 2 is installed between the upper die 11 and the lower die 12, the spring 27 extends, the distance between the die bar 21 and the fixing plate 22 is increased, the cable is straightened, and then the outer insulating layer of the cable is injected.

[0041] Further, a first card slot 28 for clamping the rotating shaft member is provided at one end of the fixed plate 22 and the clamping plate 23. The rotating shaft member includes a rotating shaft block 29 and a first shaft pin 210. One end of the rotating shaft block 29 is fixedly connected to the fixed plate 22, and the other end of the rotating shaft block 29 is connected to the clamping plate 23 through the first shaft pin 210. The fixed plate 22 and the clamping plate 23 are connected by the rotating shaft member, and the clamping plate 23 is rotatable relative to the fixed plate 22.

[0042] Further, a second card slot 211 for clamping the fastener is provided at the other end of the fixed plate 22 and the clamping plate 23. The fastener includes a wrench 212 and a second shaft pin 213. One end of the wrench 212 is rotatably connected to the fixed plate 22 through the second shaft pin 213. The wrench 212 is rotatable relative to the fixed plate 22 and is used to tightly connect the clamping plate 23 and the fixed plate 22. By providing the fastener, one end of the cable can be fixedly clamped between the fixed plate 22 and the clamping plate 23. By controlling the opening or closing of the wrench 212, the rotation of the clamping plate 23 relative to the fixed plate 22 can be controlled.

[0043] Further, one end of the fixed plate 22 is rotatably connected to one end of the clamping plate 23 through a rotating shaft member, and the other end of the fixed plate 22 is tightly connected to the other end of the clamping plate 23 through a fastener.

[0044] Further, the upper die 11 further includes a first groove 14 and a second groove 15, and the lower die 12 further includes a third groove 16 and a fourth groove 17. When the die bar assembly 2 is installed between the upper die 11 and the lower die 12, the die bar 21 is clamped in a first positioning groove formed by the cooperation of the first groove 14 and the third groove 16, the clamping plate 23 is clamped in the second groove 15, and the fixed plate 22 is clamped in the fourth groove 17. The distance between the third groove 16 and the fourth groove 17 is greater than the distance between the die bar 21 and the fixed plate 22 (when the spring 27 is in a natural state). When the die bar assembly 2 is installed between the upper die 11 and the lower die 12, the spring 27 is in a stretched state, and the cable clamped in the die bar assembly 2 is straightened.

[0045] Further, the wire support assembly 3 further includes a second positioning groove 36 and a third positioning groove 37. The second positioning groove 36 is located between the first wire support block 32 and the positioning block 34, and the third positioning groove 37 is located between the positioning block 34 and the second wire support block 33. When the mold bar assembly 2 is clamped with the wire support assembly 3, the mold bar 21 is clamped in the second positioning groove 36, and the fixing plate 22 is clamped in the third positioning groove 37. By providing the second positioning groove 36 and the third positioning groove 37, the wire support assembly 2 can be clamped with the wire support assembly 3, so that the spring 27 is kept in a compressed state, and the wire in the stranded state is installed in the mold bar assembly 2, facilitating the next wire injection molding process. The distance between the second positioning groove 36 and the third positioning groove 37 is less than the distance between the mold bar 21 and the fixing plate 22 (when the spring 27 is in the natural state). When the mold bar assembly 2 is clamped with the wire support assembly 3, the spring 27 is in a compressed state, and the wire clamped in the mold bar assembly 2 is in a stranded state.

[0046] Further, the injection molding assembly 1 further includes a first pressing block 18 and a second pressing block 19. The first pressing block 18 penetrates through the upper mold 11, and the second pressing block 19 penetrates through the lower mold 12. The second pressing block 19 is provided with a fourth wire groove 110, and the lower mold 12 is provided with a fifth wire groove 111. When the mold bar assembly 2 is installed between the upper mold 11 and the lower mold 12, the first wire groove 212, the fourth wire groove 110, the fifth wire groove 111, and the second wire groove 25 are arranged in sequence and used for the wire to pass through. The first pressing block 18 is used to flatten the wire. When the upper mold 11 and the lower mold 12 are closed, due to the pressing of the first pressing block 18 and the support of the second pressing block 19, the wire can be prevented from being washed crooked or offset by the rubber material, ensuring that the wire is in a straightened state during injection molding, and thus ensuring that the outer insulating layer of the wire can completely wrap the wire.

[0047] Further, the injection molding assembly 1 further includes an upper mounting plate 112 and a lower mounting plate 113. The upper mounting plate 112 is provided on the upper end surface of the upper mold 11, and the lower mounting plate 112 is provided on the lower end surface of the lower mold 12.

[0048] Specific implementation process of the stranding injection mold:

[0049] Wire installation: First, place the stranded wire in the wire support assembly 3, and insert the middle section of the wire into the third wire groove 35. Then, clamp the mold bar assembly 2 with the wire support assembly 3, and at the same time squeeze the mold bar 21, the fixing plate 22, and the clamping plate 23. The spring 27 is compressed, so that the mold bar 21 is clamped in the third positioning groove 36, and the fixing plate 22 is clamped in the fourth positioning groove 37. Open the wrench 212, so that the clamping plate 23 rotates relative to the fixing plate 22, and at the same time insert the two ends of the wire into the first wire groove 24 and the second wire groove 25 respectively. Rotate the clamping plate 23 again, and close the wrench 210 to complete the wire installation process.

[0050] Cable injection molding: After the cable is installed, the mold bar assembly 2 is taken out from the cable supporting assembly 3, the spring 27 returns to its original shape, and at the same time the cable is straightened; then the mold bar assembly 2 is installed between the upper mold 11 and the lower mold 12. Meanwhile, the mold bar 21, the fixing plate 22 and the clamping plate 23 are pulled apart, the spring 27 is stretched, the mold bar 21 is placed in the third groove 16, the fixing plate 22 is clamped in the fourth groove 17, and the cable installed in the mold bar assembly 2 is in a straightened state; the upper mold 11 and the lower mold 12 are closed, so that the mold bar 21 is clamped in the first positioning groove formed by the cooperation of the first groove 14 and the third groove 16, and the clamping plate 23 is clamped in the second groove 15; the outer insulating layer of the cable is injection-molded through the injection pipe 13 to complete the cable injection molding process.

[0051] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A stranded wire injection mold, characterized in that: It includes injection molding components, mold strip components and support wire components; The injection molding assembly includes an upper mold, a lower mold and an injection molding tube. The upper mold and the lower mold are arranged correspondingly up and down. When the upper mold and the lower mold are closed, an injection molding cavity is formed between the upper mold and the lower mold. The injection molding tube is arranged in the injection molding cavity. The mold bar assembly can be used to be clamped with the support wire assembly and installed between the upper mold and the lower mold. The mold strip assembly includes a mold strip, a fixed plate, a clamping plate, an adjusting member, a rotating shaft member and a fastener, wherein the clamping plate is connected to the upper end of the fixed plate through the rotating shaft member, a first wire groove is formed between the clamping plate and the fixed plate, the mold strip is connected to the fixed plate through the adjusting member, the adjusting member is used to adjust the distance between the mold strip and the fixed plate, and the mold strip is provided with a second wire groove; The wire support assembly is arranged on one side of the injection molding assembly, and the wire support assembly includes a bottom plate, a first wire support block, a second wire support block and a positioning block, wherein the first wire support block, the positioning block and the second wire support block are sequentially arranged on the upper end surface of the bottom plate, and the positioning block is provided with a third wire groove; When the mold strip assembly is clamped with the wire support assembly, the first wire trough, the third wire trough and the second wire trough are arranged in sequence and are used for allowing the cables to pass through in sequence, and the clamping plate and the fixing plate are used to fix the cables; when the mold strip assembly is installed between the upper mold and the lower mold, the distance between the mold strip and the fixing plate is increased, the mold strip assembly is used to straighten the cables, and the injection molding assembly is used to injection-mold the insulation layer of the straightened cables.

2. The stranded wire injection mold according to claim 1, characterized in that: The adjusting member comprises a latch and a spring, the number of the latch and the number of the spring are both two, both sides of the fixing plate are arranged relative to the mold bar through the latch, and the spring is sleeved on the latch.

3. The stranded wire injection mold according to claim 1, characterized in that: The fixed plate and the clamping plate are each provided with a first clamping groove at one end for clamping the rotating shaft member, and the rotating shaft member includes a rotating shaft block and a first shaft pin, one end of the rotating shaft block is fixedly connected to the fixed plate, and the other end of the rotating shaft block is connected to the clamping plate through the first shaft pin; the fixed plate and the clamping plate are connected through the rotating shaft member, and the clamping plate is rotatable relative to the fixed plate.

4. The stranded wire injection mold according to claim 1, characterized in that: The other ends of the fixed plate and the clamping plate are each provided with a second clamping groove for clamping a fastener, and the fastener includes a wrench and a second axle pin. One end of the wrench is rotatably connected to the fixed plate through the second axle pin. The wrench is rotatable relative to the fixed plate and is used to fasten the clamping plate and the fixed plate.

5. The stranded wire injection mold according to claim 1, characterized in that: One end of the fixing plate is rotatably connected to one end of the clamping plate through a rotating shaft, and the other end of the fixing plate is fastened to the other end of the clamping plate through a fastener.

6. The stranded wire injection mold according to claim 1, characterized in that: The upper mold also includes a first groove and a second groove, and the lower mold also includes a third groove and a fourth groove; when the mold strip assembly is installed between the upper mold and the lower mold, the mold strip is clamped in the first positioning groove formed by the first groove and the third groove, the clamping plate is clamped in the second groove, and the fixing plate is clamped in the fourth groove.

7. The stranded wire injection mold according to claim 1, characterized in that: The wire support assembly also includes a second positioning groove and a third positioning groove, the second positioning groove is located between the first wire support block and the positioning block, and the third positioning groove is located between the positioning block and the second wire support block; when the mold strip assembly is clamped with the wire support assembly, the mold strip is clamped in the second positioning groove, and the fixed plate is clamped in the third positioning groove.

8. The stranded wire injection mold according to claim 1, characterized in that: The injection molding component also includes a first pressing block and a second pressing block, the first pressing block passes through the upper mold, and the second pressing block passes through the lower mold; the second pressing block is provided with a fourth wire groove, and the lower mold is provided with a fifth wire groove; when the mold strip assembly is installed between the upper mold and the lower mold, the first wire groove, the fourth wire groove, the fifth wire groove and the second wire groove are arranged in sequence and are used for cables to pass through; the first pressing block is used to flatten the cables.

9. The stranded wire injection mold according to claim 1, characterized in that: The injection molding assembly also includes an upper mounting plate and a lower mounting plate, wherein the upper mounting plate is arranged on the upper end surface of the upper mold, and the lower mounting plate is arranged on the lower end surface of the lower mold.

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