Injection mold with optimized surrounding structure of PIN

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold with an optimized PIN surrounding structure, which comprises a support block, a bottom mold, an upper mold and an ejection device, and further comprises a stabilizing device, the stabilizing device comprises a stabilizing plate, a connecting plate, a mounting frame, a guide component and a pulling component, and the upper mold is clamped with the bottom mold through the guide component; an expansion groove is formed in the bottom mold, an installation frame is installed on the bottom mold and located in the expansion groove, a connecting plate is fixedly installed on the installation frame and located in an injection molding cavity, a stabilizing plate is fixedly installed on the connecting plate, a plurality of sets of stabilizing holes are formed in the stabilizing plate, and a pulling assembly is arranged on the installation frame. The injection molding part is formed at the bottom of the injection molding cavity, the PINs are combined with the injection molding part, and therefore the PINs can be kept stable in the injection molding process through limiting of the stabilizing holes in the stabilizing plate for the PINs.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold with optimized structure around the PIN pin. Background Technology

[0002] As a core transmission component of a vehicle's electronic system, automotive electronic connectors require precise collaboration across multiple stages to manufacture their pins. Starting with material selection, priority must be given to alloy materials with high conductivity, tensile strength, and corrosion resistance to meet the electrical and mechanical performance requirements of various applications. In the pretreatment stage, advanced cleaning processes remove surface impurities, and plastic processing enhances the density of the material's microstructure. The precision machining stage utilizes high-precision CNC equipment, employing precision turning and micro-hole forming technologies to ensure the geometric accuracy and surface finish of the pins. Furthermore, laser micromachining technology is introduced to create specific functional structures on the surface for special functional requirements. The surface treatment process requires a multi-layer composite plating system, combining chemical deposition and physical strengthening methods to improve wear resistance, oxidation resistance, and environmental tolerance while maintaining conductivity.

[0003] PIN connectors consist of PIN pins and a plastic housing. During the injection molding process, the PIN pins need to be combined with the engineering plastic housing. However, due to the small size of the PIN pins, they are not easy to fit into the injection cavity and are easily impacted by the hot flow of molten material during the injection molding process, causing them to shake and affecting the injection molding effect. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold with an optimized structure around the PIN pin, which solves the problem that when combining the PIN pin with the engineering plastic shell, the PIN pin is small in size and difficult to put into the injection cavity, and is easily impacted by the hot flow of molten material during the injection process, causing it to shake and affecting the injection effect.

[0005] To achieve the above objectives, this utility model provides an injection mold with optimized PIN pin surrounding structure, including a support block, a bottom mold, an upper mold, and an ejection device. The bottom mold has an injection cavity, and an expansion groove is also provided on the side of the bottom mold near the injection cavity. The bottom mold also has a feed groove that communicates with the injection cavity. The support block is fixedly installed on the bottom mold. The system also includes a stabilizing device, which includes a stabilizing plate, a connecting plate, a mounting frame, a guide assembly, and a pulling assembly. The upper mold engages with the bottom mold via the guide assembly. The mounting frame is installed on the bottom mold and located within the expansion groove. The connecting plate is fixedly installed on the mounting frame and located within the injection cavity. The stabilizing plate is fixedly installed on the connecting plate and has multiple sets of stabilizing holes. The pulling assembly is located on the mounting frame.

[0006] The pulling assembly includes a pull rod and a pull plate. The pull rod is fixedly installed on the mounting frame. The pull plate is fixedly installed on the pull rod and located at the end of the pull rod away from the mounting frame.

[0007] The guiding component includes a first guide block and a second guide block. The first guide block is fixedly installed on the bottom mold. The second guide block is fixedly installed on the side of the bottom mold near the first guide block. The upper mold slides in cooperation with the first guide block and the second guide block.

[0008] The bottom mold is also provided with a spiral cooling groove that penetrates through the bottom mold.

[0009] The ejection device includes a top plate and an ejector rod. The bottom of the bottom mold is provided with a top groove, which is connected to the injection cavity. A pneumatic push rod is provided on the side of the bottom mold near the top groove, and the ejector rod is fixedly installed at the output end of the pneumatic push rod. The top plate is slidably installed on the bottom mold and located in the top groove, and the top plate is fixedly connected to the ejector rod.

[0010] This utility model discloses an injection mold with an optimized PIN pin surrounding structure. In use, the upper mold is opened, separating it from the bottom mold. PIN pins are then inserted sequentially into the stabilizing holes on the stabilizing plate. The upper mold is then closed again, and molten material is injected into the injection cavity on the bottom mold through the feed channel. The spiral cooling groove is connected to a cold water source. After the injection-molded material cools and solidifies, the upper mold is opened, and the mounting frame is pulled upwards using the pull plate and pull rod, causing the stabilizing plate on the connecting plate to detach from the PIN pins. Then, the pneumatic push rod is activated, causing the ejector rod to push the top plate. The top plate ejects the injection-molded PIN pins, thus limiting the PIN pins through the stabilizing holes on the stabilizing plate, ensuring the PIN pins remain stable during injection molding. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the overall structure of an injection mold with optimized structure around the PIN pin according to this utility model.

[0013] Figure 2 This is a schematic diagram of the stabilizing device of this utility model.

[0014] In the diagram: 101-Support block, 102-Bottom mold, 103-Upper mold, 104-Injection cavity, 105-Feed groove, 106-Stabilizing plate, 107-Connecting plate, 108-Mounting frame, 109-Expanding groove, 110-Stabilizing hole, 111-Tie rod, 112-Pull plate, 113-First guide block, 114-Second guide block, 115-Spiral cooling groove, 116-Top plate, 117-Push rod, 118-Pneumatic push rod, 119-Top groove. Detailed Implementation

[0015] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0016] The embodiment of this application is as follows:

[0017] Please see Figure 1-2 , Figure 1 This is a schematic diagram of the overall structure of an injection mold with optimized structure around the PIN pin according to this utility model. Figure 2 This is a schematic diagram of the stabilizing device of this utility model.

[0018] This utility model provides an injection mold with optimized structure around the PIN pin: it includes a support block 101, a bottom mold 102, an upper mold 103, and an ejection device, and also includes a stabilizing device. The stabilizing device includes a stabilizing plate 106, a connecting plate 107, a mounting frame 108, a guide assembly, and a pulling assembly. The pulling assembly includes a pull rod 111 and a pull plate 112. The guide assembly includes a first guide block 113 and a second guide block 114. The bottom mold 102 is also provided with a spiral cooling groove 115. The ejection device includes a top plate 116 and an ejector rod 117. The aforementioned solution solves the problem that when combining the PIN pin with the engineering plastic shell, the PIN pin is small and difficult to insert into the injection cavity, and is easily impacted by the hot molten flow during injection, causing shaking and affecting the injection molding effect.

[0019] In this embodiment, the PIN pin is limited by the stabilizing hole 110 on the stabilizing plate 106, so that the PIN pin can remain stable during injection molding.

[0020] The upper mold 103 engages with the lower mold 102 via the guide assembly. The mounting frame 108 is mounted on the lower mold 102 and located within the expansion groove 109. The connecting plate 107 is fixedly mounted on the mounting frame 108 and located within the injection cavity 104. The stabilizing plate 106 is fixedly mounted on the connecting plate 107 and has multiple sets of stabilizing holes 110. The pulling assembly is mounted on the mounting frame 108, which is a frame structure. The connecting plate 107 is welded to the upper mold 102. On both sides of the bottom of the mounting frame 108, the stabilizing plate 106 is welded to the connecting plate 107. The stabilizing plate 106 has the same cross-sectional size as the injection cavity 104. In use, by inserting the PIN pin into the stabilizing hole 110 on the stabilizing plate 106 and performing injection molding through the feed groove 105, the injection molded part is formed at the bottom of the injection cavity 104, so that the PIN pin is combined with the injection molded part. Thus, the stabilizing hole 110 on the stabilizing plate 106 limits the PIN pin, so that the PIN pin can remain stable during injection molding.

[0021] Secondly, the pull rod 111 is fixedly installed on the mounting frame 108; the pull plate 112 is fixedly installed on the pull rod 111 and located at the end of the pull rod 111 away from the mounting frame 108. The pull rod 111 is welded to the mounting frame 108, and the pull plate 112 is welded to the top of the pull rod 111. The arrangement of the pull plate 112 and the pull rod 111 facilitates pulling the mounting frame 108 upward.

[0022] Furthermore, the first guide block 113 is fixedly installed on the bottom mold 102; the second guide block 114 is fixedly installed on the side of the bottom mold 102 near the first guide block 113, and the upper mold 103 slides in cooperation with the first guide block 113 and the second guide block 114. The first guide block 113 is located on the left and right sides of the bottom mold 102, while the second guide block 114 is located on the front and rear sides of the bottom mold 102. The arrangement of the first guide block 113 and the second guide block 114 facilitates the engagement of the upper mold 103 and the bottom mold 102.

[0023] Furthermore, the spiral cooling groove 115 penetrates the bottom mold 102 and is spirally distributed within the bottom mold 102. By connecting the spiral cooling groove 115 to an external cold water source, the spiral cooling groove 115 can uniformly cool the PIN pins during the injection molding process, thereby optimizing the cooling structure of the bottom mold 102.

[0024] Finally, the bottom mold 102 is provided with a top groove 119, which is connected to the injection cavity 104. A pneumatic push rod 118 is provided on the side of the bottom mold 102 near the top groove 119. The push rod 117 is fixedly installed on the output end of the pneumatic push rod 118. The top plate 116 is slidably installed on the bottom mold 102 and located in the top groove 119. At the same time, the top plate 116 is fixedly connected to the push rod 117. The pneumatic push rod 118 is fixed to the bottom of the bottom mold 102 by screws. The push rod 117 is welded to the output end of the pneumatic push rod 118. The diameter of the top plate 116 is equal to that of the top groove 119. The pneumatic push rod 118 pushes the push rod 117, thereby causing the top plate 116 to push the PIN pin after injection to be demolded.

[0025] In this embodiment, during use, the upper mold 103 is opened, causing it to separate from the bottom mold 102. Then, the PIN pins are sequentially inserted into the stabilizing holes 110 on the stabilizing plate 106. The upper mold 103 is then closed again, and molten material is injected into the injection cavity 104 on the bottom mold 102 through the feed groove 105. The spiral cooling groove 115 is connected to a cold water source. After the injection molding material cools and solidifies, the upper mold 103 is opened, and the mounting frame 108 is pulled upwards by the pull plate 112 and the pull rod 111, causing the stabilizing plate 106 on the connecting plate 107 to separate from the PIN pins. Then, the pneumatic push rod 118 is activated, causing the ejector rod 117 to push the top plate 116. The top plate 116 ejects the injection-molded PIN pins, thereby limiting the PIN pins through the stabilizing holes 110 on the stabilizing plate 106, ensuring the PIN pins remain stable during injection molding.

[0026] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. An injection mold for optimizing the structure around PIN, comprising a support block, a bottom mold, an upper mold and an ejection device, wherein the bottom mold is provided with an injection cavity, and a flared groove is arranged on the side of the bottom mold close to the injection cavity, and a feeding groove is further arranged on the bottom mold and communicates with the injection cavity, and the support block is fixedly installed on the bottom mold.

2. The injection mold for optimizing the structure around PIN according to claim 1, wherein the stabilizing device comprises a stabilizing plate, a connecting plate, a mounting frame, a guide assembly and a pulling assembly, the upper mold is clamped with the bottom mold through the guide assembly, the mounting frame is installed on the bottom mold and located in the flared groove, the connecting plate is fixedly installed on the mounting frame and located in the injection cavity, the stabilizing plate is fixedly installed on the connecting plate, a plurality of stabilizing holes are arranged on the stabilizing plate, and the pulling assembly is arranged on the mounting frame.

3. The injection mold for optimizing the structure around PIN according to claim 1, wherein the guide assembly comprises a first guide block and a second guide block, the first guide block is fixedly installed on the bottom mold, and the second guide block is fixedly installed on the side of the bottom mold close to the first guide block, and the upper mold is slidingly fitted with the first guide block and the second guide block.

4. The injection mold for optimizing the structure around PIN according to claim 3, wherein a spiral cooling groove is further arranged on the bottom mold and penetrates the bottom mold.

5. The injection mold for optimizing the structure around PIN according to claim 1, wherein the ejection device comprises a top disc and a top rod, the bottom mold is provided with a top groove at the bottom, the top groove communicates with the injection cavity, a pneumatic push rod is arranged on the side of the bottom mold close to the top groove, the top rod is fixedly installed at the output end of the pneumatic push rod, the top disc is slidingly installed on the bottom mold and located in the top groove, and the top disc is fixedly connected with the top rod. ​ ​ ​ ​ ​ ​

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