Plastic mold structure capable of performing injection molding twice in sequence

Abstract

The utility model discloses a plastic mold structure capable of performing injection molding twice in sequence, which relates to the technical field of molds and comprises a lower mold component, an upper mold component, a lower mold core, a plurality of groups of troughs I, a plurality of groups of troughs II, a plurality of groups of material channels, an upper mold core and a nozzle, the lower mold core is fixed at the upper part of the lower mold component, and the troughs I are arranged at the upper part of the lower mold core. The second material grooves are formed in the upper portion of the lower mold core, the number of the second material grooves is the same as that of the first material grooves, and the second material grooves and the first material grooves are distributed at equal intervals and are used for conducting primary shell injection molding and secondary shell injection molding on a continuous material belt, and latent glue enters the first material grooves and the second material grooves through the nozzles and the material channels; according to the continuous material belt injection mold, primary shell injection molding is carried out on the outer portions of the continuous material belts in the multiple sets of first material grooves, secondary shell injection molding is carried out on the outer portions of the continuous material belts subjected to primary shell injection molding in the multiple sets of second material grooves, and therefore two-time injection molding of the continuous material belts can be completed through the one-time mold closing process, the production procedure is greatly simplified, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, concretely is a plastic mould structure of two times injection molding in succession. BACKGROUND

[0002] In the production process of plastic products, injection molding technology is a common and efficient manufacturing method, for some complex structure or have special requirements plastic products, traditional single injection molding often difficult to meet its manufacturing needs,

[0003] Among them in the processing process of WIFI antenna product or electronic component, need two sets of plastic mould, first use hardware piece to carry out first injection molding and get semi -finished product, again put semi -finished product into second set of plastic mould and carry out second injection molding and get finished product, this increases production procedure and production cost, for this, we propose a plastic mould structure of two times injection molding in succession, through once clamping process can complete twice injection molding to continuous material belt, simplify production procedure, improve production efficiency. SUMMARY

[0004] In view of the prior art, the utility model provides a plastic mould structure of two times injection molding in succession, solves the problem in the background art.

[0005] To achieve the above object, the utility model realizes through the following technical scheme: a plastic mould structure of two times injection molding in succession, including lower die assembly and upper die assembly, still including:

[0006] Lower die core, the lower die core is fixed on the upper portion of lower die assembly;

[0007] Material groove one, a plurality of material groove one is set up on the upper portion of lower die core;

[0008] Material groove two, a plurality of material groove two is set up on the upper portion of lower die core, a plurality of material groove two and a plurality of material groove one are same in number, and are equally spaced distribution, are used to carry out once shell injection molding and twice shell injection molding to continuous material belt;

[0009] Material channel, the material channel is set up on the upper portion of lower die core, and the material channel is communicated to a plurality of material groove two and a plurality of material groove one.

[0010] Further, the plastic mould structure of two times injection molding in succession further includes:

[0011] Upper die core, the upper die core is fixed on the lower portion of upper die assembly;

[0012] Mouth, the mouth is installed in the inside of upper die core, and the mouth and the position of material channel correspond.

[0013] Further, the lower die assembly includes:

[0014] the base;

[0015] the lower die plate is fixed on the upper part of the base, and the lower die core is installed on the upper part of the lower die plate;

[0016] the positioning hole is arranged at the corner of the lower die plate.

[0017] Further, the lower die assembly further comprises:

[0018] the fixed plate is fixed in the interior of the base;

[0019] the needle returning groups are fixed between the lower die plate and the fixed plate;

[0020] the needle plate is slidingly connected outside the needle returning groups;

[0021] the return springs are respectively sleeved outside the needle returning groups and above the needle plate;

[0022] the needles are arranged in the corresponding positions of the second material grooves and the first material grooves.

[0023] Further, the upper die assembly comprises:

[0024] the upper die plate;

[0025] the backing plate is fixed on the lower part of the upper die plate, and the upper die core is fixed on the lower part of the backing plate;

[0026] the positioning ring is fixed in the middle of the upper die plate.

[0027] Further, the upper die assembly further comprises:

[0028] the positioning columns are fixed on the lower part of the backing plate, and the positions of the positioning columns and the positioning holes are corresponding.

[0029] Compared with the prior art, the plastic mold structure provided by the present application comprises a lower die assembly, an upper die assembly, a lower die core, a first material groove, a second material groove, a material channel, an upper die core and a nozzle. After the mold is closed, the latent glue enters the interiors of the first material grooves and the second material grooves through the nozzle and the material channel, so that the one-shell and two-shell injection operations can be respectively performed on the products in the interiors. Compared with the traditional production process, the production process is simplified, and the production efficiency is improved.

[0030] The plastic mold structure provided by the present application has the following beneficial effects compared with the prior art:

[0031] 1. A two-time injection molding structure, which is characterized in that: the structure is provided with a plurality of groups of material groove one and a plurality of groups of material groove two, and a plurality of groups of material groove one and a plurality of groups of material groove two are communicated through a material channel, so that the continuous material belt is continuously injected.

[0032] 2. A two-time injection molding structure, which is characterized in that: the structure is provided with a plurality of groups of material groove one and a plurality of groups of material groove two, and a plurality of groups of material groove one and a plurality of groups of material groove two are communicated through a material channel, so that the continuous material belt is continuously injected. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structure diagram of a two-time injection molding structure.

[0034] Figure 2 It is a split structure diagram of a two-time injection molding structure.

[0035] Figure 3 It is an enlarged structure diagram of A in a two-time injection molding structure.

[0036] Figure 4 It is a structure diagram of a lower die assembly in a two-time injection molding structure.

[0037] Figure 5 It is a structure diagram of an upper die assembly in a two-time injection molding structure.

[0038] Figure 6 It is a structure diagram of a product in a two-time injection molding structure.

[0039] In the figure: 1, lower die assembly; 11, base; 12, lower die plate; 13, fixed plate; 14, return needle; 15, needle plate; 16, return spring; 17, needle; 18, positioning hole; 2, upper die assembly; 21, upper die plate; 22, pad plate; 23, positioning ring; 24, positioning column; 3, lower die core; 4, material groove one; 5, material groove two; 6, material channel; 7, upper die core; 8, nozzle. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] See also Figures 1-3 The utility model provides a technical solution for a plastic mold structure for two injection moldings: a plastic mold structure for two injection moldings, comprising a lower mold assembly 1, an upper mold assembly 2, a lower mold core 3, a trough 1 4, a trough 2 5, a material channel 6, an upper mold core 7 and a nozzle 8. Specifically, a continuous material strip of a metal sheet passes between the lower mold core 3 and the upper mold core 7, and the upper mold assembly 2 and the upper mold core 7 move downward, so that the lower mold core 3 and the upper mold core 7 fix the continuous material strip. After the mold is closed, the latent glue enters the multiple groups of troughs 1 4 through the nozzle 8 and the material channel 6. and the inside of the multi-group material trough 2 5, a shell injection is performed on the outside of the continuous material strip in the multi-group material trough 1 4, and a secondary shell injection is performed on the outside of the continuous material strip that has been injected once in the multi-group material trough 2 5. After the mold is opened, the continuous material strip is moved to realize the function of injecting the continuous material strip twice in succession. After the mold is opened, the robot or manual person removes the nozzle 8 and the material head formed in the material channel 6. Moreover, the design of the material channel 6 enables the multi-group material trough 1 4 and the multi-group material trough 2 5 to be connected, thereby realizing the continuous injection molding of the continuous material strip.

[0042] See also Figure 4 The lower mold assembly 1 includes a base 11, a lower mold plate 12, a positioning hole 18, a fixing plate 13, a return pin 14, an ejector plate 15, a reset spring 16 and an ejector 17. Specifically, when the mold is opened, multiple sets of reset springs 16 pull the ejector plate 15 and multiple sets of ejector pins 17 upward, so that the free ends of the multiple sets of ejector pins 17 lift the products inside the multiple sets of material troughs 1 4 and the multiple sets of material troughs 2 5.

[0043] See also Figure 5 The upper mold assembly 2 includes an upper mold plate 21, a pad 22, a positioning ring 23 and a positioning column 24. Specifically, the positions of multiple groups of positioning columns 24 and multiple groups of positioning holes 18 correspond to each other, ensuring the precise positioning of the mold during the mold closing process.

[0044] See also Figure 6 , consists of a continuous strip of metal sheet and a primary shell and a secondary shell that are injection molded on the outside.

[0045] The working principle of the utility model is as follows: when in use, the upper mold assembly 2 and the upper mold core 7 are first moved downward, so that the lower mold core 3 and the upper mold core 7 fix the continuous material strip, and the latent glue enters the multi-group material trough 1 4 and the multi-group material trough 2 5 through the nozzle 8 and the material channel 6, and the shell is injected once on the outside of the continuous material strip in the multi-group material trough 1 4, and the shell is injected twice on the outside of the continuous material strip in the multi-group material trough 2 5 that has been injected once;

[0046] Then the upper die assembly 2 and the upper die core 7 move upward to open the mold, the plurality of reset springs 16 pull the plurality of ejector pins 17 and the plurality of ejector pin plates 15 to move upward, so that the free ends of the plurality of ejector pins 17 lift the products in the interiors of the plurality of first material grooves 4 and the plurality of second material grooves 5, so that the products are separated from the mold to realize movement, and after the movement is completed, the above-mentioned repeated operation can be performed.

Claims

1. A plastic mold structure for two injection moldings, comprising a lower mold assembly (1) and an upper mold assembly (2), characterized in that: Also includes: A lower mold core (3), wherein the lower mold core (3) is fixed to the upper portion of the lower mold assembly (1); A material trough (4), wherein a plurality of groups of the material troughs (4) are provided on the upper portion of the lower mold core (3); Trough 2 (5), multiple groups of the trough 2 (5) are opened on the upper part of the lower mold core (3), the number of the multiple groups of the trough 2 (5) is the same as the number of the multiple groups of the trough 1 (4), and they are evenly spaced and used for primary shell injection molding and secondary shell injection molding of the continuous material strip; A material channel (6) is provided on the upper portion of the lower mold core (3), and the material channel (6) connects the plurality of material troughs 2 (5) and the plurality of material troughs 1 (4).

2. The plastic mold structure for two injection moldings according to claim 1, characterized in that: Also includes: An upper mold core (7), wherein the upper mold core (7) is fixed to the lower portion of the upper mold assembly (2); A nozzle (8) is installed inside the upper mold core (7), and the positions of the nozzle (8) and the material channel (6) correspond to each other.

3. The plastic mold structure for two injection moldings according to claim 1, characterized in that: The lower mold assembly (1) comprises: Base (11); A lower template (12), wherein the lower template (12) is fixed to the upper portion of the base (11), and the lower mold core (3) is mounted on the upper portion of the lower template (12); A positioning hole (18) is provided at a corner of the lower template (12).

4. The plastic mold structure for two injection moldings according to claim 3, characterized in that: The lower mold assembly (1) further comprises: A fixing plate (13), wherein the fixing plate (13) is fixed inside the base (11); Return pins (14), multiple groups of return pins (14) are fixed between the lower template (12) and the fixed plate (13); An ejector plate (15) is slidably connected to the outside of the plurality of return pins (14); Return springs (16), wherein the plurality of return springs (16) are respectively sleeved on the outside of the plurality of return pins (14) and located above the ejector plate (15); Ejectors (17), wherein the free ends of the plurality of groups of ejectors (17) pass through the lower mold plate (12) and the lower mold core (3), and correspond to the positions of the plurality of groups of material troughs 2 (5) and the plurality of groups of material troughs 1 (4).

5. The plastic mold structure for two injection moldings according to claim 1, characterized in that: The upper mold assembly (2) comprises: Upper template (21); A backing plate (22), wherein the backing plate (22) is fixed to the lower portion of the upper mold plate (21), and the upper mold core (7) is fixed to the lower portion of the backing plate (22); A positioning ring (23) is fixed in the middle of the upper template (21).

6. The plastic mold structure for two injection moldings according to claim 5, characterized in that: The upper mold assembly (2) further includes: Positioning columns (24), multiple groups of the positioning columns (24) are fixed to the lower part of the pad (22), and the positions of the multiple groups of the positioning columns (24) and the multiple groups of positioning holes (18) correspond to each other.

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