Injection mold for a modular strip

Abstract

The utility model discloses a kind of injection moulding jigs of die strip wire harness, it includes: lower mould and upper mould;Die strip wire harness structure;Injection channel;A plurality of first profiling grooves are opened in lower mould and communicated with injection channel, a plurality of second profiling grooves are opened in upper mould and communicated with injection channel, when upper mould and lower mould close mould, first profiling groove and second profiling groove form injection cavity, wire is passed through the injection cavity.The utility model is by being provided with a die strip wire harness structure in lower mould to be used for accommodating wire, provide good support to wire, effectively improve the traditional "point to line" support mode, substantially improve the yield of injection molding, it is suitable to be applied to various injection molding structures.The utility model adds injection channel between external injection molding machine and injection cavity, so that external injection molding machine can directly injection molding to injection channel, without secondary encapsulation to wire, substantially improve production efficiency, effectively enhance market competitiveness.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding fixture devices, and specifically to an injection molding fixture for molding strip wiring. Background Technology

[0002] With the increasing popularity of electronic terminal products, data cables, as an accessory to these products, are experiencing a growing market demand.

[0003] Data cables are generally composed of terminals, wires, and an outer plastic layer. During production, the wires are first soldered to the terminals, and then the outer plastic layer is injection molded onto the terminals and the outer layer of the wires.

[0004] Currently available injection molding jigs can enclose the wire with plastic, preventing the wire edges from being exposed. For example, Chinese utility model patent application CN219191038U discloses a stamping jig for preventing misalignment of the coated wire. It includes a top mold and a bottom mold. The bottom mold has a cavity, which includes a head cavity for positioning the earphone head and a wire-shaped cavity for positioning the wire. The wire-shaped cavity has multiple spaced support blocks, each with a support groove adapted to the shape of the wire. There is a bottom positioning groove for installing the support block; the bottom of the top mold is formed with an upper mold that matches the shape of the mold cavity, and the upper mold has multiple injection holes; the earphone head is positioned in the head cavity, the cable is located in the cable cavity, the support groove in the cable cavity is inserted into the support block, and the support groove formed by the support block supports and positions the earphone cable. The cable is segmented and positioned by the support block. During injection molding, the cable is positioned by the support groove of the support block and will not shift, so that the plastic can surround the cable and the edge of the cable will not be exposed, effectively protecting the cable.

[0005] However, this existing stamping fixture for preventing the misalignment of coated wires still has the following shortcomings:

[0006] In this technical solution, the wire is mainly supported and positioned in segments by support blocks to ensure that the wire is positioned by the support grooves of the support blocks during injection molding and will not shift. However, the support blocks support the wire in a "point-to-line" manner, which can easily lead to uneven support force, thereby affecting the efficiency and yield of injection molding. Furthermore, this technical solution does not have an injection channel, requiring secondary coating of the wire, which greatly affects production efficiency.

[0007] In view of the above, the inventors propose the following technical solution. Summary of the Invention

[0008] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an injection molding fixture for molding strip wiring.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an injection molding fixture for molding strips, comprising: a lower mold and an upper mold disposed above the lower mold and used for mold closing with the lower mold; a molding strip structure installed on the lower mold and used for accommodating wires; an injection channel disposed on the molding strip structure; the lower mold has several first contour grooves communicating with the injection channel, and correspondingly, the upper mold has several second contour grooves communicating with the injection channel. When the upper mold and the lower mold are closed, the first contour grooves and the second contour grooves form an injection cavity, and the wires pass through the injection cavity.

[0010] Furthermore, in the above technical solution, a mold strip groove is provided on the lower mold, and a first clearance part is also provided on the lower mold; several first positioning holes are provided on the lower mold, and correspondingly, several first positioning pins are provided on the upper mold.

[0011] Furthermore, in the above technical solution, the lower end of the upper mold is provided with a mold strip positioning groove that matches the mold strip slot, and the upper mold is provided with a first sleeve. The first sleeve is provided with a first channel hole for the injection channel to pass through, wherein the upper end of the first sleeve protrudes from the upper end face of the upper mold.

[0012] Furthermore, in the above technical solution, the injection channel includes a first feed section passing through the first channel hole, a first diversion section connected to the first feed section, and several first injection nozzles disposed on the first diversion section for injection into the injection cavity.

[0013] Furthermore, in the above technical solution, there are four first contour grooves and four second contour grooves, and correspondingly, there are also four first injection nozzles.

[0014] Furthermore, in the above technical solution, the template strip wiring structure includes a first template plate, a first limiting strip installed on the template slot and connected to the first template plate, and a first spring and a second spring respectively disposed on both sides of the first limiting strip for floating support of the upper mold. The first template plate has a first extension portion protruding and forming for abutting against the first clearance portion. The first extension portion has several first receiving grooves for positioning the wire. Correspondingly, the first limiting strip has several second receiving grooves for positioning the wire.

[0015] Furthermore, in the above technical solution, the first limiting strip is formed with a third receiving groove for accommodating the first diversion section of the injection molding channel.

[0016] Furthermore, in the above technical solution, an upper mold fixing plate is installed above the upper mold by four second screws, and the lower mold is installed on a base.

[0017] Furthermore, in the above technical solution, the upper mold fixing plate is provided with a first sleeve hole for the upper end of the first sleeve to pass through, and the upper mold fixing plate is also provided with four second through holes. Correspondingly, the upper mold is provided with four second screw holes. Each second screw passes through a second through hole and is installed in a second screw hole, so that the upper mold fixing plate is installed on the upper mold.

[0018] Furthermore, in the above technical solution, the base includes a square base plate, a first support plate and a second support plate mounted on the base plate, an mounting plate erected on the upper part of the first support plate and the second support plate for mounting the lower mold, and a third spring disposed below the mounting plate and supporting it.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0020] In this invention, a wire-layout structure is incorporated into the lower mold to accommodate the wire, providing excellent support and effectively improving upon the traditional "point-to-line" support method. This significantly increases the yield rate of injection molding and makes it suitable for application in various injection molding structures. Furthermore, compared to existing structures, this invention adds an injection channel between the external injection molding machine and the injection cavity, allowing the external injection molding machine to directly inject into the channel without requiring secondary coating of the wire. This greatly improves production efficiency and enhances market competitiveness. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is an exploded structural diagram of the present invention.

[0023] Figure 3 This is an exploded structural diagram of the present invention from another perspective.

[0024] Figure 4 This is a schematic diagram of the injection channel structure in this utility model.

[0025] Figure 5 This is a schematic diagram of the module strip wiring structure in this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0027] See Figures 1 to 5 As shown, this is an injection molding fixture for molding strip wiring, which includes: a lower mold 1 and an upper mold 2 disposed above the lower mold 1 and used for closing with the lower mold 1;

[0028] The module strip wiring structure 3 is installed on the lower mold 1 and is used to accommodate the wire 10;

[0029] Injection channel 4 is provided on mold strip wiring structure 3;

[0030] The lower mold 1 has several first contour grooves 11 that communicate with the injection channel 4. Correspondingly, the upper mold 2 has several second contour grooves 21 that communicate with the injection channel 4. When the upper mold 2 and the lower mold 1 are closed, the first contour grooves 11 and the second contour grooves 21 form an injection cavity, and the wire 10 passes through the injection cavity.

[0031] In this invention, a wire routing structure 3 is provided in the lower mold 1 to accommodate the wire 10, providing excellent support for the wire 10. This effectively improves the traditional "point-to-line" support method, significantly increasing the yield rate of injection molding and making it suitable for application in various injection molding structures. Furthermore, compared to existing structures, this invention adds an injection channel 4 between the external injection molding machine and the injection cavity, allowing the external injection molding machine to directly inject into the injection channel 4 without the need for secondary coating of the wire, greatly improving production efficiency and effectively enhancing market competitiveness.

[0032] The lower mold 1 has a mold strip groove 15 and a first clearance part 13. The lower mold 1 also has several first positioning holes 14, and correspondingly, the upper mold 2 has several first positioning posts 22. Here, to ensure accurate positioning when the upper mold 2 and lower mold 1 are closed, several first positioning posts 22 are provided on the upper mold 2. Preferably, there are four first positioning posts 22, located at the four corners of the upper mold 2. The number of first positioning holes 14 is also four.

[0033] The die strip wiring structure 3 includes a first die strip plate 31, a first limiting strip 32 mounted on the die strip slot 15 and connected to the first die strip plate 31, and a first spring 33 and a second spring 34 respectively disposed on both sides of the first limiting strip 32 for floating support of the upper die 2. The first die strip plate 31 has a first extension portion 35 protruding from it for abutting against the first relief portion 13. The first extension portion 35 has several first receiving grooves 351 recessed on it for positioning the wire 10. Correspondingly, the first limiting strip 32 has several second receiving grooves 321 for positioning the wire 10. The first limiting strip 32 has a third receiving groove 322 formed on it for accommodating the first diversion section 42 of the injection channel 4.

[0034] The first receiving groove 351, the third receiving groove 322, and the second receiving groove 321 can position and support the wire 10. The first receiving groove 351, the third receiving groove 322, and the second receiving groove 321 all have a certain length to support most of the wire body 10. Compared with the existing structure, it changes the traditional "point-to-line" support method and has a better support effect. In addition, in order to prevent foreign objects from falling onto the wire 10 and causing dirt, a protective plate 39 is provided on the first template plate 31, which can effectively block foreign objects.

[0035] The upper mold 2 has a mold strip positioning groove 25 at its lower end that matches the mold strip slot 15. A first sleeve 23 is provided on the upper mold 2, and a first channel hole 231 for the injection channel 4 to pass through is provided on the first sleeve 23. The upper end of the first sleeve 23 protrudes from the upper end face of the upper mold 2. Here, when the upper mold 2 and the lower mold 1 are closed, the mold strip positioning groove 25 and the mold strip slot 15 together limit the first limiting strip 32 to ensure that the mold strip wiring structure 3 is in the correct position, thereby improving the accuracy of injection molding.

[0036] The injection channel 4 includes a first feed section 41 passing through the first channel hole 231, a first diversion section 42 connected to the first feed section 41, and several first injection nozzles 43 disposed on the first diversion section 42 for injection into the injection cavities. There are four first contour grooves 11 and four second contour grooves 21, and four injection cavities. Correspondingly, there are also four first injection nozzles 43. Here, when the upper mold 2 and the lower mold 1 are closed, the four first injection nozzles 43 correspond to the four injection cavities. The external injection molding machine delivers the material into the injection channel 4 through the first channel hole 231, and then the injection channel 4 delivers the material into the four injection cavities to complete the injection process.

[0037] An upper mold fixing plate 5 is installed on the upper mold 2 by four second screws 90, and the lower mold 1 is installed on a base 6.

[0038] The upper mold fixing plate 5 has a first sleeve hole 51 for the upper end of the first sleeve 23 to pass through. The upper mold fixing plate 5 also has four second through holes 52. Correspondingly, the upper mold 2 has four second screw holes 26. Each second screw 90 passes through a second through hole 52 and is installed in a second screw hole 26, so that the upper mold fixing plate 5 is installed on the upper mold 2.

[0039] The base 6 includes a square base plate 61, a first support plate 62 and a second support plate 63 mounted on the base plate 61, an mounting plate 64 mounted on the upper end of the first support plate 62 and the second support plate 63 for mounting the lower mold 1, and a third spring 65 disposed below the mounting plate 64 and supporting it.

[0040] In summary, this invention utilizes a die strip wiring structure 3 in the lower mold 1 to accommodate the wire 10, providing excellent support for the wire 10. This effectively improves upon the traditional "point-to-line" support method, significantly increasing the yield rate of injection molding and making it suitable for application in various injection molding structures. Furthermore, compared to existing structures, this invention adds an injection channel 4 between the external injection molding machine and the injection cavity, allowing the external injection molding machine to directly inject into the injection channel 4 without requiring secondary coating of the wire, thus greatly improving production efficiency and enhancing market competitiveness.

[0041] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. An injection molding fixture for molding strip wiring, comprising: The lower mold (1) and the upper mold (2) are disposed above the lower mold (1) and used to close with the lower mold (1); Its features are, It also includes: a module strip wiring structure (3), which is installed on the lower mold (1) and used to accommodate the wire (10); Injection channel (4), which is set on mold strip wiring structure (3); The lower mold (1) has several first contour grooves (11) that communicate with the injection channel (4), and the upper mold (2) has several second contour grooves (21) that communicate with the injection channel (4). When the upper mold (2) and the lower mold (1) are closed, the first contour grooves (11) and the second contour grooves (21) form an injection cavity, and the wire (10) passes through the injection cavity.

2. The injection molding fixture for a strip wiring method according to claim 1, characterized in that: The lower mold (1) has a mold strip groove (15) and a first clearance part (13); the lower mold (1) has several first positioning holes (14), and correspondingly, the upper mold (2) has several first positioning posts (22).

3. The injection molding fixture for a strip wiring according to claim 2, characterized in that: The upper mold (2) has a mold strip positioning groove (25) at its lower end that matches the mold strip slot (15). The upper mold (2) has a first sleeve (23) with a first channel hole (231) for the injection channel (4) to pass through it. The upper end of the first sleeve (23) protrudes from the upper end face of the upper mold (2).

4. The injection molding fixture for a strip wiring according to claim 3, characterized in that: The injection channel (4) includes a first feed section (41) passing through the first channel hole (231), a first diversion section (42) connected to the first feed section (41), and several first injection nozzles (43) disposed on the first diversion section (42) for injection into the injection cavity.

5. The injection molding fixture for a strip wiring according to claim 4, characterized in that: The number of the first contour groove (11) and the second contour groove (21) are both four, and the number of the first injection nozzle (43) is also four.

6. The injection molding fixture for a strip wiring according to claim 5, characterized in that: The template wire laying structure (3) includes a first template plate (31), a first limiting strip (32) installed on the template slot (15) and connected to the first template plate (31), and a first spring (33) and a second spring (34) respectively disposed on both sides of the first limiting strip (32) for floating support of the upper mold (2). The first template plate (31) has a first extension portion (35) protruding and forming for abutting against the first relief portion (13). The first extension portion (35) has several first receiving grooves (351) recessed on it for positioning the wire (10). Correspondingly, the first limiting strip (32) has several second receiving grooves (321) for positioning the wire (10).

7. The injection molding fixture for a strip wiring according to claim 6, characterized in that: The first limiting strip (32) has a third receiving groove (322) formed on it for receiving the first diversion section (42) of the injection channel (4).

8. The injection molding fixture for a strip wiring according to claim 3, characterized in that: An upper mold fixing plate (5) is installed above the upper mold (2) by four second screws (90), and the lower mold (1) is installed on a base (6).

9. The injection molding fixture for a strip wiring according to claim 8, characterized in that: The upper mold fixing plate (5) is provided with a first sleeve hole (51) for the upper end of the first sleeve (23) to pass through. The upper mold fixing plate (5) is also provided with four second through holes (52). Correspondingly, the upper mold (2) is provided with four second screw holes (26). Each second screw (90) passes through a second through hole (52) and is installed in a second screw hole (26), so that the upper mold fixing plate (5) is installed on the upper mold (2).

10. The injection molding fixture for a strip wiring according to claim 8, characterized in that: The base (6) includes a square base plate (61), a first support plate (62) and a second support plate (63) mounted on the base plate (61), an mounting plate (64) mounted on the upper end of the first support plate (62) and the second support plate (63) for mounting the lower mold (1), and a third spring (65) located below the mounting plate (64) and supporting it.

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