CN211566824U - Injection mold convenient for discharging - Google Patents

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold with convenient unloading, which solves the problems in the prior art that the injection molded parts are directly pushed out, the injection molded parts are easily adhered to the mold, and the finished injection molded parts are defective. An injection mold for easy discharge, comprising an upper mold fixing plate, an upper template is fixedly connected to the bottom of the upper mold fixing plate, a core is arranged inside the upper template, the core and the upper template are communicated through a gate, and the upper template is connected. There is a lower die fixing plate at the bottom of the upper die plate, and a backing plate fixedly connected with the lower die fixing plate is arranged between the upper die plate and the lower die fixing plate. of the discharge rod. Before unloading the injection molded parts, the utility model uses the upper template as a driving force to drive the sliding rod to slide, and then drives the ejector rod to pre-unload the injection molded parts, so as to loosen the injection molded parts and reduce the defects of the finished injection molded parts.

Description

An injection mold for easy unloading

technical field

The utility model relates to the technical field of injection moulds, in particular to an injection mould which is convenient for unloading.

Background technique

Plastic mold is a tool that is matched with plastic molding machine in the plastic processing industry to give plastic products a complete configuration and precise size. , There are also various types and structures of plastic molds. Injection molding is to clamp the injection mold on the injection molding machine, and the molten plastic is injected into the molding cavity, cooled and shaped in the cavity, and then the upper and lower molds are separated. The system ejects the product from the mold cavity and leaves the mold, and finally the mold is closed again for the next injection. The entire injection molding process is cyclic.

After the injection molding of the injection mold is completed, first open the upper mold and the lower mold, then push the unloading rod to push out the unloading plate, and then push out the injection molded parts. Defects.

Utility model content

The purpose of the utility model is to provide an injection mold with convenient discharge, which solves the problem that the injection molded part is directly pushed out in the prior art, and the injection molded part is easy to adhere to the mold, resulting in the defect of the finished injection molded part.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

An injection mold for easy discharging, comprising an upper die fixing plate, an upper die plate is fixedly connected to the bottom of the upper die fixing plate, a core is arranged inside the upper die plate, the core and the upper die plate are communicated through a gate, and the upper die plate is connected to the upper die plate. There is a lower mold fixing plate at the bottom of the lower mold, and a backing plate fixedly connected with the lower mold fixing plate is arranged between the upper template and the lower mold fixing plate. The same end of the two unloading rods is fixedly connected by the unloading plate, the top of the unloading board is provided with two symmetrically distributed top rods, and a sliding rod is slidably connected between the unloading board and the upper template. When the slide bar slides to the lowest end of the upper die plate, the unloading plate unloads the injection molded parts in the core.

Preferably, a return spring is arranged between the stripper plate and the backing plate, and both ends of the return spring are fixedly connected to the stripper plate and the backing plate respectively.

Preferably, a spacer block is provided inside the upper formwork, and the spacer block is fixedly connected to the bottom inner wall of the upper formwork.

Preferably, the top of the stripper plate is provided with two symmetrically distributed chamfers.

Preferably, the top of the sliding rod is provided with two symmetrically distributed chamfers.

Preferably, the bottom of the upper formwork is provided with a protective sleeve inserted into the backing plate, and the protective sleeve is slidably connected with the sliding rod.

Preferably, the bottom of the protective sleeve is provided with a chamfer.

The utility model at least has the following beneficial effects:

Driven by the hydraulic cylinder of the injection molding machine, the upper die plate and the upper die plate are separated from the backing plate. At this time, the upper die plate moves. After the upper die plate moves to a certain distance, the injection molded parts are separated from the core, and the upper die plate continues to move. The upper template then drives the sliding rod to move, the sliding rod drives the discharge plate to move, the discharge plate pushes the ejector rod to move, the ejector rod pre-discharges the injection molded parts, and then pushes the discharge rod, which drives the discharge plate to move. , and then drive the ejector rod to continue to move, the ejector rod completely ejects the injection molded parts, and the injection molding parts are discharged. Compared with the prior art, after the injection molding of the injection mold is completed, the upper mold and the lower mold are first opened, and then the unloading is pushed. The rod pushes out the unloading plate, and then pushes out the injection molded parts. The injection molded parts are directly pushed out. The injection molded parts are easy to adhere to the mold, which leads to the defects of the finished injection molded parts. The sliding rod is driven to slide, and then the ejector rod is driven to pre-discharge the injection-molded parts, so that the injection-molded parts are loosened, the defects of the finished injection-molded parts are reduced, and the unloading of the injection-molded parts is convenient.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is a three-dimensional diagram of the utility model;

Fig. 2 is a partial cross-sectional view in Fig. 1;

FIG. 3 is a state diagram of the mold opening in FIG. 2 .

In the figure: 1. Upper die fixing plate; 2. Upper template; 3. Backing plate; 4. Lower die fixing plate; 5. Gate; 6. Core; 7. Discharge rod; 8. Discharge plate; 9 , ejector rod; 10, return spring; 11, sliding rod; 12, pad; 13, protective sleeve.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

Referring to Figures 1-3, an injection mold for easy unloading includes an upper mold fixing plate 1, an upper mold plate 2 is fixedly connected to the bottom of the upper mold fixing plate 1, and a core 6 is arranged inside the upper mold plate 2. , the core 6 is fixedly connected with the upper template 2, and the core 6 and the upper template 2 are connected through the gate 5. Specifically, the gate 5 is fixedly connected with the upper mold fixing plate 1, and the gate 5 is provided with a runner , the upper die fixing plate 1 and the core 6 are connected through the runner and the gate 5, the bottom of the upper die plate 2 is provided with a lower die fixing plate 4, and a lower die fixing plate is provided between the upper die plate 2 and the lower die fixing plate 4 4. The backing plate 3 is fixedly connected, and the inner sliding connection of the lower die fixing plate 4 has two symmetrically distributed discharge rods 7 extending from one end to the outside. The same end of the two discharge rods 7 is fixedly connected by the discharge plate 8 , the top of the discharge plate 8 is provided with two symmetrically distributed ejector rods 9, specifically, the ejector rod 9 is fixedly connected with the discharge plate 8, and a sliding rod 11 is slidably connected between the discharge plate 8 and the upper template 2, Specifically, the slide bar 11 is located inside the backing plate 3. When the slide bar 11 slides to the lowest end of the upper die plate 2, the unloading plate 8 unloads the injection molded parts in the core 6. Specifically, the upper die plate 2, the upper die The fixing plate 1 , the backing plate 3 and the lower die fixing plate 4 are slidably connected by a guide post (not shown) and a guide sleeve (not shown).

This program has the following working process:

After the injection mold injects the lamp holder, the injection molded parts are formed in the core 6, and then pushed out of the injection machine. The upper mold plate 2 and the hydraulic cylinder of the injection molding machine are driven, and the upper mold fixing plate 1 and the upper mold plate 2 are separated from the backing plate 3. , at this time, the upper die plate 2 moves, after the upper die plate 2 moves to a certain distance, the injection molded part is separated from the core 6, the upper die plate 2 continues to move, the upper die plate 2 then drives the slide bar 11 to move, and the slide bar 11 drives the discharge plate 8 Move, the unloading plate 8 pushes the ejector rod 9 to move, the ejector rod 9 pre-discharges the injection molded parts, and then pushes the unloading rod 7, the unloading rod 7 drives the unloading plate 8 to move, and then drives the ejector rod 9 to continue to move , the ejector rod 9 completely ejects the injection molded parts, and the injection molding parts are discharged.

According to the above working process, it can be known that:

The upper die plate 2 is driven by the hydraulic cylinder of the injection molding machine, and the upper die fixing plate 1 and the upper die plate 2 are separated from the backing plate 3. At this time, the upper die plate 2 moves. After the upper die plate 2 moves to a certain distance, the injection molded parts are separated from the core. 6. The upper template 2 continues to move, the upper template 2 then drives the sliding rod 11 to move, the sliding rod 11 drives the discharge plate 8 to move, the discharge plate 8 pushes the ejector rod 9 to move, and the ejector rod 9 pre-discharges the injection molded parts, and then , and then push the unloading rod 7, the unloading rod 7 drives the unloading plate 8 to move, and then drives the ejector rod 9 to continue to move, the ejector rod 9 completely ejects the injection molded parts, and the injection molding parts are discharged. , After the injection molding of the injection mold is completed, first open the upper mold and the lower mold, then push the unloading rod 7 to push out the unloading plate 8, and then push out the injection molded parts, the injection molded parts are directly pushed out, and the injection molded parts are easy to adhere to the mold, resulting in For the defects of the finished injection molded parts, in this scheme, before the injection molded parts are unloaded, the upper template 2 is used as the driving force to drive the sliding rod 11 to slide, and then the ejector rod 9 is driven to pre-unload the injection molded parts, so that the injection molded parts are loosened and the injection molding rate is reduced. The defect of the finished product is convenient for the unloading of the injection molded part, and the structure is simple, the operation is convenient, and the promotion is convenient.

A return spring 10 is arranged between the stripper plate 8 and the backing plate 3, and both ends of the return spring 10 are fixedly connected to the stripper plate 8 and the backing plate 3 respectively. When the stripper plate 8 pushes out the injection molded parts, the return spring 10 compresses , after the injection molded parts are completely ejected, the return spring 10 rebounds, and the discharge plate 8 is reset. The use of the return spring 10 facilitates the return of the discharge plate 8, which in turn facilitates the discharge of the injection molded parts.

Further, a cushion block 12 is provided inside the upper template 2, and the cushion block 12 is fixedly connected with the bottom inner wall of the upper template 2. Therefore, when the sliding rod 11 slides to the bottom of the upper template 2, the cushion block 12 can be opposite to the sliding rod 11. Buffering is performed to protect the sliding rod 11 and prevent the mold from being damaged; at the same time, two symmetrically distributed chamfers are provided on the top of the discharge plate 8, so as to facilitate the push out of the discharge plate 8 when the discharge plate 8 is pushed out, and facilitate injection molding unloading of parts.

In addition, the top of the slide bar 11 is provided with two symmetrically distributed chamfers. When the slide bar 11 slides in the upper die plate 2, the sliding of the slide bar 11 can be facilitated by the chamfers; the bottom of the upper die plate 2 is provided with an insert pad The protective sleeve 13 inside the plate 3 is slidably connected to the sliding rod 11. When the sliding rod 11 is inside the mold, the protective sleeve 13 reduces the influence of the high temperature of the mold core 6 on the sliding rod 11, and can also prevent The plastic particles enter the sliding rod 11 to protect the sliding rod 11; similarly, the bottom of the protective sleeve 13 is provided with a chamfer, so that when the protective sleeve 13 is reset, the chamfer of the protective sleeve 13 is more convenient to insert the protective sleeve 13 Inside the backing plate 3, the use of the protective sleeve 13 is more convenient.

To sum up, the present invention uses the upper template 2 as a driving force to drive the sliding rod 11 to slide, and then drives the ejector rod 9 to pre-unload the injection molded parts, so that the injection molded parts are loosened and the finished product of the injection molded parts is reduced. The defect is convenient for the unloading of the injection molded parts. After the injection molded parts are completely ejected, the return spring 10 rebounds and the unloading plate 8 is reset. The use of the return spring 10 facilitates the reset of the unloading plate 8, which in turn facilitates the unloading of the injection molded parts. .

The basic principles, main features and advantages of the present invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions describe only the principles of the present invention. There are various changes and improvements that fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. An injection mold for convenient unloading, comprising an upper die fixing plate (1), characterized in that the upper die plate (2) is fixedly connected to the bottom of the upper die fixing plate (1), and the upper die plate (2). ) is provided with a core (6) inside, the core (6) is communicated with the upper template (2) through a gate (5), and the bottom of the upper template (2) is provided with a lower mold fixing plate ( 4), between the upper mold plate (2) and the lower mold fixing plate (4), there is a backing plate (3) fixedly connected with the lower mold fixing plate (4), and the inner part of the lower mold fixing plate (4) is The sliding connection is provided with two symmetrically distributed discharge rods (7) with one end extending to the outside, and the same ends of the two discharge rods (7) are fixedly connected by a discharge plate (8), and the discharge plate ( 8) There are two symmetrically distributed top rods (9), and a sliding rod (11) is slidably connected between the discharge plate (8) and the upper template (2). When the sliding rod (11) ) slides to the lowest end of the upper template (2), the discharge plate (8) discharges the injection molded parts in the core (6). 2. The injection mold according to claim 1, wherein a return spring (10) is provided between the stripper plate (8) and the backing plate (3), and both ends of the return spring (10) They are respectively fixedly connected with the stripper plate (8) and the backing plate (3). 3. The injection mold according to claim 1, wherein a spacer (12) is provided inside the upper template (2), and the spacer (12) is fixed to the bottom inner wall of the upper template (2). connect. 4 . The injection mold according to claim 1 , wherein two symmetrically distributed chamfers are provided on the top of the stripper plate ( 8 ). 5 . 5. The injection mold according to claim 1, wherein the top of the sliding rod (11) is provided with two symmetrically distributed chamfers. 6. The injection mold according to claim 1, wherein the bottom of the upper template (2) is provided with a protective sleeve (13) inserted into the backing plate (3), the protective sleeve (13) It is slidably connected with the sliding rod (11). 7. The injection mold according to claim 6, wherein the bottom of the protective sleeve (13) is provided with a chamfer.

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