Forming mold of plug with conjoined plastic PIN (Personal Identification Number)

Abstract

The utility model discloses a forming die for a plug with a connected plastic PIN. The forming die comprises a top plate, a hot runner plate, an upper supporting plate, an upper die plate, a lower die plate, a lower supporting plate and a bottom plate which are sequentially arranged from top to bottom, the bottom of the hot runner plate is provided with an inclined pulling inner needle structure, and the inclined pulling inner needle structure comprises a sliding seat, two inclined guide rods and two plastic PIN contact pins for forming a plug; a first sliding block and a second sliding block which are oppositely arranged are arranged on the top of the lower die plate, and a core is arranged on the top of the lower supporting plate. A first containing groove is formed in the bottom of the upper die plate in an upward concave mode, a second containing groove is formed in the top of the first containing groove in a concave mode, an upper die core is arranged in the second containing groove, and a forming die cavity for plug forming is defined by the upper die core, the first sliding block, the second sliding block and the core together. Through the arrangement of the inclined pulling inner pin structure, the first sliding block, the second sliding block and the core, the plug with the connected plastic PIN can be subjected to one-time injection molding, and demolding is smooth.

Description

Technical Field

[0001] The utility model relates to the field of injection mold technology, in particular to a molding mold for a plug with a connected plastic PIN. Background Art

[0002] Injection mold is a tool for producing plastic products; it is also a tool that gives plastic products a complete structure and precise size. Injection mold is also a processing method used in mass production of parts. It is mainly used in the industrial field. The injection mold process is to inject the heated and melted material into the mold cavity by high pressure, and obtain the molded product after cooling and solidification; it is divided into thermosetting plastic mold and thermoplastic plastic mold according to the molding characteristics.

[0003] With the update and progress of science and technology, the requirements for automatic injection molding of rubber-coated products are getting higher and higher. The European standard plug with a one-piece plastic PIN has replaced the previous plug with a hardware PIN. Before the injection molding of the plug with a hardware PIN, it is necessary to insert a hardware PIN on the upper template, so that the plug has a hardware PIN after injection molding. In the mold structure with multiple cavities in one mold, it is time-consuming and labor-intensive to insert multiple hardware PINs, thereby reducing production efficiency. The European standard plug with a one-piece plastic PIN is made of plastic as a whole, and the plastic PIN has an oblique inner hole. During subsequent assembly, the hardware PIN can be inserted into the plug together with the internal parts, and the hardware PIN protrudes from the plastic PIN. Therefore, how to design an injection mold to realize the one-time injection molding of the one-piece plastic PIN plug is a key research direction in the industry.

[0004] Therefore, it is necessary to design a new technical solution to solve the above problems. Utility Model Content

[0005] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a molding mold for a plug with a one-piece plastic PIN, which is provided with an oblique inner needle pull-out structure, which includes a sliding seat, two oblique guide rods and two insertion pins. After the hot runner plate is separated from the upper support plate, the insertion pins will be driven to be obliquely pulled out of the molding cavity. When the upper mold plate is separated from the lower mold plate, the first slider and the second slider will move away from the molding cavity. When the lower support plate is separated from the lower mold plate, the core on the lower support plate will move downward away from the molding cavity, so that the plug with the one-piece plastic PIN can be injected once and demolded smoothly.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A molding die for a plug with a connected plastic PIN, comprising a top plate, a hot runner plate, an upper support plate, an upper mold plate, a lower mold plate, a lower support plate and a bottom plate arranged in sequence from top to bottom;

[0008] The bottom of the hot runner plate is provided with an oblique inner needle structure, which includes a sliding seat, two oblique guide rods and two plastic PIN pins for forming the plug, the pins are arranged in the oblique guide rods and protrude from the bottom of the oblique guide rods, the sliding seat is provided with a slide groove, and the top of the oblique guide rod is slidably connected to the slide groove;

[0009] A first slider and a second slider which are arranged opposite to each other are arranged on the top of the lower template, and a core is arranged on the top of the lower support plate, and the core is located in the area surrounded by the first slider and the second slider;

[0010] The bottom of the upper template is recessed upwardly with a first receiving groove for receiving the first slider and the second slider, the top of the first receiving groove is recessed with a second receiving groove, an upper mold core is arranged in the second receiving groove, the upper mold core, the first slider, the second slider and the core together form a molding cavity for molding the plug, and an inclined guide column assembly for driving the first slider and the second slider to move away from or approach each other is arranged on the side of the second receiving groove;

[0011] The pin passes through the upper mold core and extends into the molding cavity. The arrangement of the inner pin structure, the first slider, the second slider and the core enables the plug with the integrated plastic PIN to be injection molded at one time and demoulded smoothly.

[0012] As a preferred solution, the first slider and the second slider are each provided with two concave cavities arranged side by side with a spacing. Correspondingly, the oblique inner needle structure and the core are both two to form two molding cavities. Two concave cavities are arranged on one slider, so that two plugs can be molded, which makes rational use of the usable space on the slider and has an ingenious structural design.

[0013] As a preferred solution, the first slider and the second slider form a slider group, and the slider group is four groups arranged in a square shape. Correspondingly, the first accommodating grooves are two arranged at intervals, and the two groups of slider groups can be placed in a first accommodating groove at intervals. The arrangement of the four groups of slider groups makes it possible to form 8 plugs at one time, thereby improving the production efficiency of the plugs.

[0014] As a preferred solution, a pouring gate is provided at the bottom of the hot runner plate, and there are four pouring gates corresponding to the slider group. The pouring gate is connected to a symmetrically arranged first runner and a second runner, and the first runner and the second runner are connected to corresponding concave cavities, and the first runner and the second runner are arranged on the top of the upper template.

[0015] As a preferred solution, the first flow channel and the second flow channel are both arranged in an arc shape.

[0016] As a preferred embodiment, the top of the upper template is recessed downwardly with a first mounting groove and a second mounting groove corresponding to the first flow channel and the second flow channel, and guide blocks are provided in the first mounting groove and the second mounting groove, and the guide blocks are provided with inclined grooves matching the inclined guide rods, and the first flow channel and the second flow channel are connected to the corresponding concave cavities through the corresponding guide blocks.

[0017] As a preferred solution, the inclined guide column assembly includes two inclined guide columns arranged on opposite sides of the second accommodating groove and a fixing block for fixing the inclined guide columns. Accordingly, the first slider and the second slider are both provided with inclined guide grooves matching the inclined guide columns, and the two inclined guide columns slide in the corresponding inclined guide grooves to drive the first slider and the second slider to move away from or closer to each other.

[0018] As a preferred solution, a lower mold core is arranged on the top of the lower mold plate, the core passes through the lower mold core, and the first slider and the second slider are respectively arranged on opposite sides of the lower mold core.

[0019] As a preferred solution, the top of the lower template is provided with an anti-slip protrusion, and correspondingly, the bottoms of the first slider and the second slider are provided with anti-slip grooves matching the anti-slip protrusion. The setting of the anti-slip protrusion and the anti-slip groove can prevent the first slider and the second slider from detaching from the lower template.

[0020] As a preferred solution, a cooling channel is provided in the core, and the input and output ends of the cooling channel are exposed on the side of the lower support plate. The setting of the cooling channel can cool the inner wall surface of the plug, and utilize the principle of thermal expansion and contraction to enable the plug to be smoothly removed from the mold.

[0021] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0022] Mainly, an oblique inner needle pulling structure is provided, which includes a sliding seat, two oblique guide rods and two insertion pins. After the hot runner plate is separated from the upper support plate, the insertion pins will be driven to be obliquely pulled out of the molding cavity. When the upper mold plate is separated from the lower mold plate, the first slider and the second slider will move away from the molding cavity. When the lower support plate is separated from the lower mold plate, the core on the lower support plate will move downward away from the molding cavity, so that the plug with a connected plastic PIN can be injected at one time and demolded smoothly.

[0023] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of a preferred embodiment of the utility model;

[0025] Figure 2 It is a three-dimensional schematic diagram of another viewing angle of a preferred embodiment of the utility model;

[0026] Figure 3 It is a bottom schematic diagram of a hot runner plate of a preferred embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of an inclined guide rod passing through an upper support plate according to a preferred embodiment of the utility model;

[0028] Figure 5 It is a bottom schematic diagram of the upper template of the preferred embodiment of the utility model;

[0029] Figure 6 It is a top schematic diagram of the upper template of the preferred embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the installation of the first slider and the second slider of the preferred embodiment of the utility model;

[0031] Figure 8 It is a schematic diagram of the installation of the core of the preferred embodiment of the utility model.

[0032] Description of the accompanying drawings:

[0033] 10. Top plate 20. Hot runner plate

[0034] 21. pouring gate 211. first runner

[0035] 212, second flow channel 30, upper support plate

[0036] 40. Upper template 41. Inclined guide column assembly

[0037] 411, inclined guide column 412, fixed block

[0038] 42. Upper mold core

[0039] 401, first receiving groove 402, second receiving groove

[0040] 403, first installation slot 404, second installation slot

[0041] 405, guide block 406, chute

[0042] 50. Lower template 51. First slide block

[0043] 52. Second slider 53. Lower die core

[0044] 54. Anti-falling convex part 501, concave cavity

[0045] 502, inclined guide groove 60, lower support plate

[0046] 61. Core 611. Cooling channel

[0047] 70, bottom plate 80, oblique inner needle structure

[0048] 81. Sliding seat 811. Sliding groove

[0049] 82. Oblique guide rod 83. Insert pin

[0050] 90. Molding cavity. DETAILED DESCRIPTION

[0051] First of all, it should be noted that in the description of the present invention, the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present invention.

[0052] Please refer to Figures 1 to 8 As shown, it shows the specific structure of the preferred embodiment of the utility model, including a top plate 10, a hot runner plate 20, an upper support plate 30, an upper mold plate 40, a lower mold plate 50, a lower support plate 60 and a bottom plate 70 arranged in sequence from top to bottom.

[0053] The bottom of the hot runner plate 20 is provided with an oblique inner needle structure 80, which includes a sliding seat 81, two oblique guide rods 82 and two plastic PIN pins 83 for forming the plug, the pins 83 are arranged in the oblique guide rods 82 and protrude from the bottom of the oblique guide rods 82, the sliding seat 81 is provided with a slide groove 811, and the top of the oblique guide rod 82 is slidably connected to the slide groove 811;

[0054] See also Figure 3 As shown, specifically, a pouring gate 21 is provided at the bottom of the hot runner plate 20, and the pouring gates 21 are four in a square arrangement.

[0055] The top of the lower template 50 is provided with a first slider 51 and a second slider 52 which are arranged opposite to each other, and the top of the lower support plate 60 is provided with a core 61, and the core 61 is located in the area surrounded by the first slider 51 and the second slider 52; the bottom of the upper template 40 is upwardly recessed with a first receiving groove 401 for accommodating the first slider 51 and the second slider 52, the top of the first receiving groove 401 is recessed with a second receiving groove 402, and the upper mold core 42 is provided in the second receiving groove 402, and the upper mold The core 42, the first slider 51, the second slider 52 and the core 61 together form a molding cavity 90 for molding the plug. The side of the second accommodating groove 402 is provided with an inclined guide column assembly 41 for driving the first slider 51 and the second slider 52 to move away from or towards each other; the insertion pin 83 passes through the upper mold core 42 and extends into the molding cavity 90. The arrangement of the oblique inner needle structure 80, the first slider 51, the second slider 52 and the core 61 enables the plug with the integrated plastic PIN to be injected once and demolded smoothly.

[0056] See also Figure 7 The first slider 51 and the second slider 52 are both provided with two concave cavities 501 arranged side by side at intervals. Accordingly, the oblique inner needle structure 80 and the core 61 are both two to form two molding cavities 90. Two concave cavities 501 are arranged on one slider to realize molding of two plugs, reasonably utilize the use space on the slider, and the structural design is ingenious.

[0057] Specifically, the first slider 51 and the second slider 52 form a slider group, and the slider group is four groups arranged in a square shape. Correspondingly, the first accommodating grooves 401 are two arranged at intervals, and two groups of slider groups can be placed in one first accommodating groove 401 at intervals. The arrangement of four groups of slider groups allows 8 plugs to be formed at one time, thereby improving the production efficiency of the plugs.

[0058] See also Figure 6 As shown, the pouring port 21 is connected with a symmetrically arranged first runner 211 and a second runner 212, the first runner 211 and the second runner 212 are connected to corresponding concave cavities 501, the first runner 211 and the second runner 212 are arranged on the top of the upper template 40, the top of the upper template 40 is recessed downwardly with a first mounting groove 403 and a second mounting groove 404 corresponding to the first runner 211 and the second runner 212, the first mounting groove 403 and the second mounting groove 404 are both provided with guide blocks 405, the guide blocks 405 are provided with inclined grooves 406 matching the inclined guide rods 82, the first runner 211 and the second runner 212 are connected to corresponding concave cavities 501 through corresponding guide blocks 405; preferably, the first runner 211 and the second runner 212 are both arranged in an arc shape.

[0059] See also Figure 5 and Figure 7 As shown, the inclined guide column assembly 41 includes two inclined guide columns 411 arranged on opposite sides of the second accommodating groove 402 and a fixing block 412 for fixing the inclined guide columns 411. Accordingly, the first slider 51 and the second slider 52 are both provided with inclined guide grooves 502 matching the inclined guide columns 411. The two inclined guide columns 411 slide in the corresponding inclined guide grooves 502 to drive the first slider 51 and the second slider 52 to move away from or approach each other.

[0060] See also Figure 7 As shown, a lower mold core 53 is provided at the top of the lower mold 50, and the core 61 passes through the lower mold core 53. The first slider 51 and the second slider 52 are respectively arranged on the opposite sides of the lower mold core 53; an anti-slip protrusion 54 is provided at the top of the lower mold 50, and correspondingly, the bottoms of the first slider 51 and the second slider 52 are both provided with anti-slip grooves (not shown in the figure) matching the anti-slip protrusion 54. The setting of the anti-slip protrusion 54 and the anti-slip groove can prevent the first slider 51 and the second slider 52 from detaching from the lower mold 50.

[0061] See also Figure 8 As shown, a cooling channel 611 is provided in the core 61, and the input end and the output end of the cooling channel 611 are exposed on the side of the lower support plate 60. The setting of the cooling channel 611 can cool the inner wall surface of the plug, and utilize the principle of thermal expansion and contraction to enable the plug to be smoothly removed from the mold.

[0062] The design focus of this utility model is:

[0063] Mainly, an oblique inner needle pulling structure is provided, which includes a sliding seat, two oblique guide rods and two insertion pins. After the hot runner plate is separated from the upper support plate, the insertion pins will be driven to be obliquely pulled out of the molding cavity. When the upper mold plate is separated from the lower mold plate, the first slider and the second slider will move away from the molding cavity. When the lower support plate is separated from the lower mold plate, the core on the lower support plate will move downward away from the molding cavity, so that the plug with a connected plastic PIN can be injected at one time and demolded smoothly.

[0064] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A molding die for a plug with a one-piece plastic PIN, comprising a top plate, a hot runner plate, an upper support plate, an upper mold plate, a lower mold plate, a lower support plate and a bottom plate arranged in sequence from top to bottom; characterized in that: The bottom of the hot runner plate is provided with an oblique inner needle structure, which includes a sliding seat, two oblique guide rods and two plastic PIN pins for forming the plug, the pins are arranged in the oblique guide rods and protrude from the bottom of the oblique guide rods, the sliding seat is provided with a slide groove, and the top of the oblique guide rod is slidably connected to the slide groove; A first slider and a second slider which are arranged opposite to each other are arranged on the top of the lower template, and a core is arranged on the top of the lower support plate, and the core is located in the area surrounded by the first slider and the second slider; The bottom of the upper template is recessed upwardly with a first receiving groove for receiving the first slider and the second slider, the top of the first receiving groove is recessed with a second receiving groove, an upper mold core is arranged in the second receiving groove, the upper mold core, the first slider, the second slider and the core together form a molding cavity for molding the plug, and an inclined guide column assembly for driving the first slider and the second slider to move away from or approach each other is arranged on the side of the second receiving groove; The insert pin passes through the upper mold core and extends into the forming mold cavity.

2. A molding die for a plug with a one-piece plastic PIN according to claim 1, characterized in that: The first slider and the second slider are both provided with two concave cavities arranged side by side with a spacing, and correspondingly, the oblique inner needle structure and the core are both two to form two molding cavities.

3. A molding die for a plug with a one-piece plastic PIN according to claim 2, characterized in that: The first slider and the second slider form a slider group, and the slider group is four groups arranged in a square shape. Correspondingly, the first accommodating grooves are two arranged at intervals, and two slider groups can be placed in one first accommodating groove at intervals.

4. A molding die for a plug with a one-piece plastic PIN according to claim 3, characterized in that: A pouring gate is provided at the bottom of the hot runner plate, and there are four pouring gates corresponding to the slider group. The pouring gate is connected to the first and second flow channels which are symmetrically arranged. The first and second flow channels are connected to the corresponding concave cavities, and the first and second flow channels are provided on the top of the upper mold plate.

5. The molding die of the plug with integrated plastic PIN according to claim 4, characterized in that: The first flow channel and the second flow channel are both arranged in an arc shape.

6. The molding die of the plug with integrated plastic PIN according to claim 4, characterized in that: The top of the upper template is recessed downwardly with a first mounting groove and a second mounting groove corresponding to the first flow channel and the second flow channel, and guide blocks are provided in the first mounting groove and the second mounting groove, and the guide blocks are provided with inclined grooves matching the inclined guide rods, and the first flow channel and the second flow channel are connected to the corresponding concave cavities through the corresponding guide blocks.

7. The molding die of the plug with integrated plastic PIN according to claim 1, characterized in that: The inclined guide column assembly includes two inclined guide columns arranged on opposite sides of the second accommodating groove and a fixing block for fixing the inclined guide columns. Accordingly, the first slider and the second slider are both provided with inclined guide grooves matching the inclined guide columns. The two inclined guide columns slide in the corresponding inclined guide grooves to drive the first slider and the second slider to move away from or approach each other.

8. The molding die of the plug with integrated plastic PIN according to claim 1, characterized in that: A lower mold core is arranged on the top of the lower mold plate, the core passes through the lower mold core, and the first slider and the second slider are respectively arranged on two opposite sides of the lower mold core.

9. The molding die of the plug with integrated plastic PIN according to claim 1, characterized in that: The top of the lower template is provided with an anti-dropping protrusion, and correspondingly, the bottoms of the first sliding block and the second sliding block are both provided with anti-dropping grooves matching the anti-dropping protrusion.

10. The molding die of the plug with integrated plastic PIN according to claim 1, characterized in that: A cooling channel is arranged in the core, and the input end and the output end of the cooling channel are exposed at the side of the lower support plate.

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