A plug housing injection mold

Abstract

The utility model relates to plug shell forming technical field, especially plug shell injection mold, including mutually cooperate's upper die main body and lower die main body, form at least one mould cavity between upper die main body and lower die main body, the front end of mould cavity extends and corresponds to the plurality of plug pin positioning slot between upper die main body and lower die main body, the rear end of mould cavity extends and corresponds to the wire positioning slot between upper die main body and lower die main body, its characterized in that, still transversely set up the first long groove that communicates in all plug pin positioning slot between upper die main body and lower die main body, the butt joint has long board in the first long groove, set up the plurality of plug pin positioning jack in long board on corresponding plug pin positioning slot, through long board can take out the setting from the mould, cooperate two long board alternate use's mode, can when the mould is in injection moulding stage, let operating personnel utilize another long board to complete the fixed work of plug pin and wire in advance.

Description

Technical Field

[0001] This utility model relates to the field of plug shell molding technology, and in particular to a plug shell injection mold. Background Technology

[0002] In the field of power supply connections for electrical equipment, the plug, as a key component for realizing power transmission, directly affects the safety, reliability, and production efficiency of the product through its structural design and manufacturing process. In existing technology, a common plug structure mainly consists of a main body, multiple prongs located at the front end of the main body, and wires connected to the rear end of the main body. To adapt to spatial layout and usage requirements, the main body often adopts a flat structural design.

[0003] Traditionally, the production of this type of plug primarily involves assembly, where individual components are processed and then combined to form a complete plug. However, due to the flat structure and small thickness of the main body, it is difficult to install robust and reliable locking or screw connections, resulting in limited connection strength between components and low overall structural rigidity. To compensate for this deficiency, current assembly processes rely heavily on ultrasonic welding to assemble and fix the main body. However, this welding method not only requires high operational precision but also carries the risk of desoldering at the weld joints due to vibration, temperature changes, and other factors during long-term use, thus affecting the plug's lifespan and safety. To address this issue, another process has emerged: in-mold manufacturing. This involves pre-fixing the pins and wires within a mold before injecting molding material to form the main body as a single piece. However, this process also faces significant challenges in actual production. Firstly, plugs typically have three pins. Due to their small size and the need for precise alignment with pre-set positions within the mold, simultaneously fixing all three pins is extremely cumbersome. This not only increases the difficulty of manual operation but also increases the risk of product scrap due to pin positioning deviations. Secondly, before the mold closes, it is necessary to wait for the pins and wires to be fixed within the mold. This results in a long waiting time for the mold to remain open, significantly extending the single production cycle, reducing the effective utilization rate of the mold, and consequently leading to low production efficiency, making it difficult to meet the demands of large-scale industrial production.

[0004] In summary, existing plug structures, whether produced by assembly or in-mold molding, have their own insurmountable technical defects during the manufacturing process. A new technical solution is urgently needed to address these issues and improve the structural robustness, production reliability, and production efficiency of plug products. Utility Model Content

[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0006] A plug housing injection mold includes an upper mold body and a lower mold body that cooperate with each other. At least one mold cavity is formed between the upper mold body and the lower mold body. The front end of the mold cavity extends with a plurality of pin positioning grooves corresponding to the pin positioning grooves between the upper mold body and the lower mold body. The rear end of the mold cavity extends with a wire positioning groove corresponding to the pin positioning grooves between the upper mold body and the lower mold body. The mold is characterized in that a first elongated groove is laterally formed between the upper mold body and the lower mold body, which connects to all the pin positioning grooves. A long plate is connected in the first elongated groove, and a plurality of pin positioning holes corresponding to the pin positioning grooves are formed on the long plate.

[0007] Preferably, the front side of the first long groove is set as an inclined surface, which enlarges the opening of the first long groove on the upper mold body cavity surface and the lower mold body cavity surface, and the front side of the long plate is an inclined surface that matches the front side of the first long groove.

[0008] Preferably, the two ends of the first long groove extend through both sides of the upper mold body and the lower mold body, and the two ends of the long plate extend to form a gripping part.

[0009] Preferably, the gripping part has an abutment structure for abutting against the sides of the upper mold body and the lower mold body, and the long plate is positioned between the upper mold body and the lower mold body through the abutment structure.

[0010] Preferably, the long plate has positioning holes, and the first long groove is provided with positioning pins corresponding to the positioning holes. The long plate is positioned between the upper mold body and the lower mold body by the cooperation of the positioning holes and the positioning pins.

[0011] Preferably, an anti-slip sleeve is provided on the grip portion.

[0012] Preferably, a second long groove is provided at the rear position of the mold cavity between the upper mold body and the lower mold body, and a reinforcing block is embedded and fixed in the second long groove. The front section of the wire positioning groove is set on the reinforcing block.

[0013] Compared with the prior art, the beneficial effects of this utility model are: By using a long plate that can be removed from the mold, and by alternating between two long plates, operators can use another long plate to pre-fix the pins and wires while the mold is in the injection stage. This greatly shortens the time spent waiting for the pins and wires to be fixed after the mold opens, significantly improving the efficiency of mold use and production continuity. At the same time, positioning the pins by using the long plate and completing the positioning operation outside the mold ensures the positioning speed of the pins and their accurate position within the mold, reducing the scrap rate caused by pin positioning deviation.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a structural schematic diagram of the lower mold body, the long plate, and the reinforcing block in the combined state of this utility model; Figure 3 This is a structural diagram of the lower mold body, long plate, and reinforcing block in the disassembled state of this utility model; Figure 4 This is a structural schematic diagram of one embodiment of the long plate in this utility model; Figure 5 This is a structural schematic diagram of another embodiment of the long plate in this utility model.

[0017] The reference numerals and names in the figure are as follows: Upper mold body 10, lower mold body 20, mold cavity 30, pin positioning groove 31, wire positioning groove 32, first long groove 33, positioning pin 34, second long groove 35, reinforcing block 36, long plate 40, pin positioning hole 41, gripping part 42, abutting structure 43, positioning hole 44, anti-slip sleeve 45. Detailed Implementation

[0018] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Please see Figure 1-5In this embodiment of the present invention, a plug shell injection mold includes an upper mold body 10 and a lower mold body 20 that cooperate with each other. At least one mold cavity 30 is formed between the upper mold body 10 and the lower mold body 20. The front end of the mold cavity 30 extends with a plurality of pin positioning grooves 31 corresponding to the pin positioning grooves 31 between the upper mold body 10 and the lower mold body 20. The rear end of the mold cavity 30 extends with a wire positioning groove 32 corresponding to the wire positioning grooves 32 between the upper mold body 10 and the lower mold body 20. The invention is characterized in that a first elongated groove 33 is laterally opened between the upper mold body 10 and the lower mold body 20, which communicates with all the pin positioning grooves 31. A long plate 40 is connected in the first elongated groove 33. A plurality of pin positioning holes 41 corresponding to the pin positioning grooves 31 are opened on the long plate 40.

[0020] By setting up the structure of the long plate 40 and the first long groove 33, the long plate 40 can be removed from the mold to fix the pins. Specifically, two long plates 40 are set up. During operation, multiple pins are first inserted into the pin positioning holes 41 on one long plate 40. Then, the long plate 40 is aligned with the first long groove 33 so that the pin positioning holes 41 on the long plate 40 correspond precisely to the pin positioning grooves 31. The wires on the pins are fixed in the wire positioning grooves 32. Then, the upper mold body 10 and the lower mold body 20 are closed, and molding material is injected into the mold cavity 30 for injection molding. Since the long plate 40 can be removed from the mold, during the mold injection stage, the operator can use another long plate 40 to fix the pins with wires in advance. After the mold injection is completed, the mold is opened, and the molded product is taken out from the first long groove 33 along with the long plate 40. Then, the other long plate 40, which has been prepared in advance and has the pins installed, is quickly placed into the first long groove 33 to continue the next injection molding operation. By allowing the long plate 40 to be removed from the mold, and by using two long plates 40 alternately, operators can use another long plate 40 to pre-fix the pins and wires while the mold is in the injection stage. This greatly shortens the time spent waiting for the pins and wires to be fixed after the mold opens, significantly improving the efficiency of mold use and production continuity. At the same time, by positioning the pins with the long plate 40 and completing the positioning operation outside the mold, the positioning speed of the pins and their accurate position within the mold are guaranteed, reducing the scrap rate caused by pin positioning deviation.

[0021] Please see Figure 1The front side of the first long groove 33 is set as an inclined surface, which enlarges the opening of the first long groove 33 on the cavity surface of the upper mold body 10 and the cavity surface of the lower mold body 20. The front side of the long plate 40 is an inclined surface that matches the front side of the first long groove 33. The front side of the long plate 40 has two inclined surfaces, which respectively connect with the inclined surfaces of the first long groove 33 of the upper mold body 10 and the lower mold body 20. This setting allows the long plate 40 to have a larger opening structure when it is inserted into the first long groove 33. The long plate 40 can be initially and quickly connected with the first long groove 33. Then, guided by the inclined surface, the long plate 40 is completely assembled into the first long groove 33, which can improve the efficiency of the long plate 40's assembly and disassembly, and at the same time prevent excessive wear between the long plate 40 and the mold.

[0022] Please see Figure 1-3 The two ends of the first long groove 33 extend through both sides of the upper mold body 10 and the lower mold body 20, and the two ends of the long plate 40 are extended to form gripping parts 42. The gripping parts 42 are designed to facilitate the operator to grasp the long plate 40. That is, when taking or putting away the long plate 40 after opening the mold or before closing the mold, by holding the gripping parts 42 at both ends of the long plate 40, the operator can avoid direct contact with the mold, prevent the high temperature of the mold from causing burns to the operator's hands, and also prevent the hands from touching the cavity surface of the lower mold body 20 and causing corrosion or other damage to the cavity surface of the lower mold body 20.

[0023] Please see Figure 4-5 The through-hole design at both ends of the first long groove 33 causes the ends of the long plate 40 to lose their positioning. Therefore, in the design of positioning the long plate 40, this technical solution proposes an implementation method, such as... Figure 4 As shown, an abutment structure 43 for abutting the upper mold body 10 and the lower mold body 20 is formed on the gripping part 42, and the long plate 40 is positioned between the upper mold body 10 and the lower mold body 20 through the abutment structure 43; or another embodiment is proposed, such as Figure 5 As shown, a positioning hole 44 is provided on the long plate 40, and a positioning pin 34 corresponding to the positioning hole 44 is provided in the first long groove 33. The long plate 40 is positioned between the upper mold body 10 and the lower mold body 20 through the cooperation of the positioning hole 44 and the positioning pin 34. In addition, in order to ensure a firm and reliable grip, an anti-slip sleeve 45 is provided on the grip part 42. The anti-slip sleeve 45 is preferably made of a heat-insulating material, so as to isolate the heat of the long plate 40 itself, allowing the operator to more comfortably pick up and put down the long plate 40.

[0024] Please see Figure 1-3A second long groove 35 is provided at the rear position of the mold cavity 30 between the upper mold body 10 and the lower mold body 20. A reinforcing block 36 is embedded and fixed in the second long groove 35. The front section of the wire positioning groove 32 is set on the reinforcing block 36. The reinforcing block 36 is to improve the accuracy of positioning the wire, so that the wire positioning groove 32 and the mold cavity 30 can fit more tightly and prevent excessive glue overflow. When wear causes excessive glue overflow, the problem can be quickly solved by replacing the reinforcing block 36. The guide positioning grooves set on the upper mold body 10 and the lower mold body 20, that is, the rear section of the guide positioning groove, can be appropriately enlarged so that the rear section of the wire positioning groove 32 can be adapted to wires of different thicknesses. The reinforcing block 36 can be adapted to wires of different thicknesses by replacement, so that the mold can adapt to wires of different thicknesses by changing a small part of the structure.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A plug housing injection mold, comprising an upper mold body (10) and a lower mold body (20) that cooperate with each other, wherein at least one mold cavity (30) is formed between the upper mold body (10) and the lower mold body (20), the front end of the mold cavity (30) extends with a plurality of pin positioning grooves (31) corresponding to the space between the upper mold body (10) and the lower mold body (20), and the rear end of the mold cavity (30) extends with a wire positioning groove (32) corresponding to the space between the upper mold body (10) and the lower mold body (20), characterized in that, A first long groove (33) is also opened laterally between the upper mold body (10) and the lower mold body (20), which is connected to all the pin positioning grooves (31). A long plate (40) is connected in the first long groove (33), and multiple pin positioning holes (41) corresponding to the pin positioning grooves (31) are opened on the long plate (40).

2. The plug housing injection mold according to claim 1, characterized in that, The front side of the first long groove (33) is set as an inclined surface, so that the opening of the first long groove (33) on the cavity surface of the upper mold body (10) and the cavity surface of the lower mold body (20) is enlarged, and the front side of the long plate (40) is an inclined surface that matches the front side of the first long groove (33).

3. The plug housing injection mold according to claim 1, characterized in that, The two ends of the first long groove (33) extend through both sides of the upper mold body (10) and the lower mold body (20), and the two ends of the long plate (40) are formed with gripping parts (42).

4. The plug housing injection mold according to claim 3, characterized in that, The gripping part (42) has abutting structures (43) for abutting the upper mold body (10) and the lower mold body (20) on both sides. The long plate (40) is positioned between the upper mold body (10) and the lower mold body (20) through the abutting structures (43).

5. The plug housing injection mold according to claim 3, characterized in that, The long plate (40) has a positioning hole (44) and a positioning pin (34) corresponding to the positioning hole (44) is provided in the first long groove (33). The long plate (40) is positioned between the upper mold body (10) and the lower mold body (20) by the cooperation of the positioning hole (44) and the positioning pin (34).

6. The plug housing injection mold according to claim 3, characterized in that, An anti-slip sleeve (45) is provided on the grip part (42).

7. The plug housing injection mold according to claim 1, characterized in that, A second long groove (35) is provided at the rear position of the corresponding mold cavity (30) between the upper mold body (10) and the lower mold body (20). A reinforcing block (36) is embedded and fixed in the second long groove (35), and the front section of the wire positioning groove (32) is set on the reinforcing block (36).

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