CN214926689U

CN214926689U - Hot runner mold

Info

Publication number: CN214926689U
Application number: CN202120845662.4U
Authority: CN
Inventors: 朱建新
Original assignee: DONGTAI PRECISION MOLD (SUZHOU) CO LTD
Current assignee: DONGTAI PRECISION MOLD (SUZHOU) CO LTD
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-30
Anticipated expiration: 2031-04-23

Abstract

The utility model discloses a hot runner mold, which comprises a mold body, a first feeding component and a second feeding component, wherein a first feeding hole is formed at the first side of the mold body, and a second feeding hole is formed at the second side of the mold body; the first feeding assembly comprises a first feeding pipe arranged at a first feeding port and a first flow channel communicated with the first feeding pipe, and the second feeding assembly comprises a second feeding pipe arranged at a second feeding port and a second flow channel communicated with the second feeding pipe; the first flow passage is communicated with the second flow passage, the first feeding pipe and the second feeding pipe alternately discharge materials, and when the molten material of the first feeding pipe flows to the cavity, the molten material in the second feeding pipe is retained in the second feeding assembly. The utility model discloses a hot runner mold sets up the first feeding subassembly and the second feeding subassembly of ejection of compact in turn, and save time greatly guarantees that production is continuous, improves the product quantity of moulding plastics in the unit interval, improves the productivity greatly simultaneously guaranteeing the quality of moulding plastics.

Description

Hot runner mold

Technical Field

The utility model relates to a mould manufacturing field especially relates to a hot runner mold.

Background

The existing products such as low-voltage circuit breaker shells are common electrical appliances for civil use, because the product consumption is large, the molding cycle reaches 17s (the molding process comprises die assembly, injection, pressure maintaining, material storage \ cooling, die opening, ejection and part taking) after years of process optimization, in the material storage \ cooling step, the material storage means that 7 seconds are required for preparing raw materials required by injection molding to form a product, in the material storage process, the former product needs 3 seconds for cooling molding in a hot runner mold, the product is cooled for 3 seconds and then is opened to take out the molded product, after the molded product is taken out, the raw materials for injection molding of a new product are not prepared, the next mold can be injected by waiting for 3 seconds, the material storage time in an injection molding machine cannot be further compressed, the product needs 4 seconds to be waited after being cooled, the injection molding of the next mold can be started after the material storage is finished, which is equivalent to waste 4 seconds, continuous production cannot be realized, and the production time is prolonged.

At present, a plurality of molds are produced, and if an injection unit of an injection machine is changed, controlled processes of all molds of a machine table are failed under the condition that the storage time cannot be kept up with the storage time, so that the investment cost is high, and the burden is caused to enterprises.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem existing in the prior art, the utility model provides a hot runner mold, technical scheme is as follows:

the utility model provides a hot runner mold, which comprises a mold body, a first feeding component and a second feeding component, wherein a first feeding hole is formed at the first side of the mold body, a second feeding hole is formed at the second side of the mold body, and the first side and the second side are arranged adjacently;

the first feeding assembly comprises a first feeding pipe arranged at a first feeding port and a first runner communicated with the first feeding pipe, the first feeding pipe is provided with a first feeding end and a first discharging end, the first feeding end is used for introducing molten material, the first discharging end is used for extending into the die body, and the molten material in the first feeding pipe flows into a cavity of the die body through the first runner;

the second feeding assembly comprises a second feeding pipe arranged at a second feeding port and a second runner communicated with the second feeding pipe, the second feeding pipe is provided with a second feeding end and a second discharging end, the second feeding end is used for introducing molten material, the second discharging end is used for extending into the die body, and the molten material in the second feeding pipe flows into a cavity of the die body through the second runner;

the first runner is communicated with the second runner, the first feeding pipe and the second feeding pipe alternately discharge, and when the molten material of the first feeding pipe flows into the cavity of the die body, the molten material in the second feeding pipe is retained in the second feeding assembly.

Furthermore, the first feeding pipe is provided with a feeding channel, the feeding channel comprises a first channel, a second channel and a third channel which are sequentially communicated, the first channel is positioned at the first feeding end, the third channel is positioned at the first discharging end, the first channel gradually narrows towards the second channel, and the third channel gradually widens towards the first channel.

Further, the second inlet pipe has feedstock channel, feedstock channel is including the fourth passageway, fifth passageway and the sixth passageway that communicate in proper order, the fourth passageway is located the second feed end, the sixth passageway is located the second discharge end, the fourth passageway to the fifth passageway direction progressively narrows, the sixth passageway progressively widens to the second runner direction.

Further, the first flow channel and the second flow channel are vertically arranged.

Furthermore, the hot runner mold further comprises a control valve body, wherein the control valve body is used for controlling the opening and closing of the first flow passage, and the control valve body is also used for controlling the opening and closing of the second flow passage.

Further, the control valve body comprises a driving part and a valve body, the valve body comprises valve needles, and the two valve needles are respectively arranged in the first flow passage and the second flow passage.

Furthermore, a communication pipeline is arranged between the communication position of the first flow passage and the second flow passage and the hot runner charging barrel in the die body.

Further, the communicating pipeline is formed by combining a plurality of pipelines, and the communicating pipeline is arranged in a bent shape.

Further, a fastener is arranged outside each of the first feeding pipe and the second feeding pipe, the fastener is provided with a clamping space, and the fastener is used for clamping the feeding pipe passing through the clamping space.

Further, the fastener is a clip.

The utility model provides a beneficial effect that technical scheme brought as follows:

a. the utility model relates to a hot runner mold, set up first feeding subassembly and the second feeding subassembly of alternative ejection of compact, the second feeding subassembly stock when the first feeding subassembly ejection of compact can save time greatly, guarantees production in succession, improves the product injection molding quantity in unit interval, improves the productivity greatly when guaranteeing injection molding quality;

b. the utility model discloses a hot runner mold increases a feed inlet through hot runner system to increase the feeding subassembly, need not to change the injection machine and jet out unit and the controlled technology of all moulds, need not to drop into the big cost, can solve the condition that the storage time can not follow up, improve production efficiency greatly.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of a hot runner mold according to an embodiment of the present invention;

fig. 2 is a perspective view of a first feed tube and a second feed tube of a hot runner mold provided by an embodiment of the present invention;

fig. 3 is a top view of a hot runner mold provided by an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along the line A-A of FIG. 3;

fig. 5 is a side view of a hot runner mold provided by an embodiment of the present invention;

fig. 6 is a cross-sectional view taken along the line B-B in fig. 5.

Wherein the reference numerals include: 1-die body, 2-first feed tube, 21-first channel, 22-second channel, 23-third channel, 3-first runner, 4-second feed tube, 41-fourth channel, 42-fifth channel, 43-sixth channel, 5-second runner, 6-fastener, 7-hot runner cartridge, 8-connecting channel.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device.

The utility model discloses an embodiment provides a hot runner mold, the concrete structure refers to fig. 1 to 6, hot runner mold includes mould body 1, first feeding subassembly and second feeding subassembly, and first feed inlet is seted up to the first side of mould body 1, and its second side is seted up the second feed inlet, and first side and second side adjacent setting, if first side is the front side, the preferred left side or right side of second side, for the operation side, the nozzle and the feed inlet of the injection machine of being convenient for are connected, convenient operation. The injection machine (vice fort) is used for providing plastic melt and is the melt, and injection machine (vice fort) is connected with first feeding component and second feeding component, and the melt gets into the hot runner feed cylinder of mould body through first feeding component and second feeding component in, reentrant die cavity, carries out injection moulding product molding.

The first feeding assembly has the following specific structure: referring to fig. 2 to 6, the injection molding device includes a first feeding pipe 2 disposed at a first feeding port and a first flow channel 3 communicated with the first feeding pipe 2, the first feeding pipe has a first feeding end and a first discharging end, the first feeding end is used for introducing a melt, the injection molding device injects the melt into the first feeding end, the first discharging end is used for extending into the mold body 1, the melt in the first feeding pipe flows into a hot runner material cylinder of the mold body 1 through the first flow channel 3 and then enters a cavity, and injection molding is performed.

The second feeding assembly has the following specific structure: referring to fig. 2 to 6, the injection molding machine comprises a second feeding pipe 4 arranged at a second feeding port and a second runner 5 communicated with the second feeding pipe 4, the second feeding pipe has a second feeding end and a second discharging end, the second feeding end is used for introducing molten material, the second discharging end is used for extending into the mold body 1, and the molten material in the second feeding pipe flows into a hot runner material cylinder of the mold body 1 through the second runner 5 and then enters a cavity to perform injection molding.

The first runner 3 is communicated with the second runner 5, the first runner 3 is communicated with the second runner 5 and then communicated with the hot runner charging barrel of the mold body 1, namely, a communicating pipeline is arranged between the communicating part of the first runner 3 and the second runner 5 and the hot runner charging barrel, and the molten material sequentially enters the hot runner charging barrel through the first runner 3 and the communicating pipeline and then is subjected to injection molding through the condensation channel. Or the melt sequentially enters the hot runner charging barrel through the second runner 5 and the communicating pipeline and then is subjected to injection molding through the condensing channel.

The first feeding pipe and the second feeding pipe alternately discharge materials, when the molten material of the first feeding pipe flows into the hot runner charging barrel of the mold body 1, the molten material in the second feeding pipe is kept in the second feeding assembly, specifically, the first feeding pipe and the second feeding pipe can both be communicated with the nozzle of the injection machine for feeding materials, when the molten material in the first feeding pipe enters the hot runner charging barrel through the first runner 3 for injection molding of a product, the molten material in the second feeding pipe is prestored (namely the molten material in the second feeding pipe can be prestored when the first feeding pipe works) and can not flow out, the molten material must be kept in the second feeding pipe and the second runner 5, the molten material prestored in the second feeding pipe can not influence the normal injection molding of the first feeding pipe, after the product is cooled and molded and taken out, the molten material in the second feeding pipe can flow into the charging barrel for injection molding of another product, and the time can be greatly saved, the continuous production is ensured, the injection molding quantity of products in unit time is improved, and the injection molding quality is ensured while the productivity is greatly improved.

First inlet pipe detachably sets up in first feed inlet department, and the change is conveniently dismantled. Second inlet pipe detachably sets up in first feed inlet department, and convenient the dismantlement is changed, and first inlet pipe is the hollow tube with the second inlet pipe, and it is used for and the injection machine nozzle intercommunication, and the melt flows to the hot runner feed cylinder in through first inlet pipe, second inlet pipe in the injection machine.

The specific structure of the first feeding pipe is as follows: referring to fig. 4, the feeding channel comprises a first channel 21, a second channel 22 and a third channel 23 which are sequentially communicated, the first channel 21 is located at a first feeding end, the third channel 23 is located at a first discharging end, the first channel 21 is gradually narrowed towards the second channel 22, the second channel 22 is preferably a column with a uniform diameter, and the third channel 23 is gradually widened towards the first flow channel 3. The first channel 21 and the second channel 22 have a shape corresponding to the shape of the nozzle of the injection machine, and the third channel 23 has a gradually widening structure for smoother flow.

The second feeding pipe has the following specific structure: referring to fig. 4, the feeding channel comprises a fourth channel 41, a fifth channel 42 and a sixth channel 43 which are communicated in sequence, the fourth channel 41 is positioned at the second feeding end, the sixth channel 43 is positioned at the second discharging end, the fourth channel 41 is gradually narrowed towards the fifth channel 42, the fifth channel 42 is preferably a column with uniform diameter, and the sixth channel 43 is gradually widened towards the second flow channel 5. The fourth and

fifth passages

41 and 42 have shapes corresponding to the nozzle shape of the injection machine, and the sixth passage 43 has a gradually widening structure for smoother melt flow.

And the first feeding pipe and the second feeding pipe are externally provided with fasteners 6 which are provided with clamping spaces and are used for clamping the feeding pipes passing through the clamping spaces to prevent the feeding pipes from loosening. The clamp comprises a first clamp piece and a second clamp piece which are similar to two semicircles, when the first clamp piece and the second clamp piece are sleeved outside the feeding pipe, a clamping space is formed between the first clamp piece and the second clamp piece, and the first clamp piece and the second clamp piece clamp the feeding pipe through two fastening parts (bolt and nut assemblies); or the clamp comprises a hoop member which can surround the feed pipe, and the hoop member is enabled to clamp the feed pipe through the fastener.

Further, the hot runner mold further comprises a control valve body, the control valve body is used for controlling the opening and closing of the first flow passage 3, the control valve body is also used for controlling the opening and closing of the second flow passage 5, the control valve body comprises a driving part and a valve body, the valve body comprises a valve needle, and the driving part is preferably an air cylinder or a hydraulic cylinder. When the first feeding pipe and the second feeding pipe alternately discharge, when one feeding pipe discharges, in order to prevent the other feeding pipe from discharging, valve bodies for controlling the opening and closing of the flow passage are arranged in the first flow passage 3 and the second flow passage 5. That is, the first flow passage 3 is provided with a needle, and the second flow passage 5 is provided with a needle. The working principle of the control valve body is as follows: the driving part drives the valve needle to move to control the closing and opening of the flow passage, and particularly, the opening and closing of the valve needle are controlled by an injection signal of an injection machine. When the sprue is opened, the injection machine injects plastic melt into the first feeding pipe, an injection signal is sent to the electromagnetic valve of the nozzle to control the air inlet channel of the cylinder, so that the piston of the cylinder drives the valve needle to move upwards to open the channel of the first runner, and the plastic melt is injected into the hot runner system from the injection machine and then enters the cavity for injection molding. When the gate is closed and injection is finished, the injection signal disappears, the electromagnetic valve is powered off, the air inlet channel is changed by the air cylinder, the piston drives the valve needle to move, the channel of the first flow channel is closed, and the melt in the channel is always kept in a molten state. Wherein the air pressure controlling the movement of the valve needle must not be less than 6 bar. Through setting up control valve body, when an inlet pipe ejection of compact, can prevent the ejection of compact of another inlet pipe, guarantee two inlet pipe mutually noninterferes, when the ejection of compact of first inlet pipe promptly, the deposit is resumed to second inlet pipe stockpile after treating the ejection of compact of first inlet pipe, and the steady preface work of two inlet pipes is guaranteed in the ejection of compact of second inlet pipe this moment.

It should be noted that: the hot runner mold can not be provided with a control valve body, and because the required raw material amount of injection molding of some products at every time is small, when the first feeding pipe and the second feeding pipe alternately discharge, when one feeding pipe discharges materials, and when another feeding pipe prestores the melt, the suction of an injection machine can be utilized to reserve the melt in another feeding pipe, and the normal work of the feeding pipe discharging materials can not be influenced.

Preferably, the first flow channel 3 is perpendicular to the second flow channel 5 for easy connection and installation. The first flow channel 3 comprises a hollow tube and the second flow channel 5 comprises a hollow tube. The communicating pipe is formed by combining a plurality of pipes, is arranged in a bent manner, namely, every two pipes vertically form a bent structure, and the number of the pipes is consistent with that of the hot runner charging barrels.

The utility model relates to a hot runner mold, set up first feeding subassembly and the second feeding subassembly of alternative ejection of compact, the second feeding subassembly stock when the first feeding subassembly ejection of compact can save time greatly, guarantees production in succession, improves the product injection molding quantity in unit interval, improves the productivity greatly when guaranteeing injection molding quality; the utility model discloses a hot runner mold increases a feed inlet through hot runner system to increase corresponding feeding assembly, both used in turn when cooperation movable vice fort realizes moulding plastics, another feed inlet storage when realizing that a feed inlet moulds plastics need not to change the controlled technology of injection machine ejection of compact unit and all moulds, need not to drop into the big cost, can solve the condition that the storage time can not follow up, improves production efficiency greatly.

The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A hot runner mold is characterized by comprising a mold body (1), a first feeding assembly and a second feeding assembly, wherein a first feeding hole is formed in the first side of the mold body (1), a second feeding hole is formed in the second side of the mold body, and the first side and the second side are arranged adjacently;

the first feeding assembly comprises a first feeding pipe (2) arranged at a first feeding port and a first runner (3) communicated with the first feeding pipe (2), the first feeding pipe (2) is provided with a first feeding end and a first discharging end, the first feeding end is used for introducing molten materials, the first discharging end is used for extending into the die body (1), and the molten materials in the first feeding pipe (2) are communicated into a cavity of the die body (1) through the first runner (3);

the second feeding assembly comprises a second feeding pipe (4) arranged at a second feeding opening and a second runner (5) communicated with the second feeding pipe (4), the second feeding pipe (4) is provided with a second feeding end and a second discharging end, the second feeding end is used for introducing molten materials, the second discharging end is used for extending into the mould body (1), and the molten materials in the second feeding pipe (4) are communicated into a cavity of the mould body (1) through the second runner (5);

first runner (3) and second runner (5) intercommunication, ejection of compact in turn is managed with second inlet pipe (4) to first inlet pipe (2), when the melt circulation of first inlet pipe (2) is to the die cavity of mould body (1) in, the melt is kept in the second feeding subassembly in second inlet pipe (4).

2. Hot runner mold according to claim 1, wherein the first feeding tube (2) has a feeding channel comprising a first channel (21), a second channel (22) and a third channel (23) which are communicated in sequence, the first channel (21) is located at a first feeding end, the third channel (23) is located at a first discharging end, the first channel (21) is gradually narrowed towards the second channel (22), and the third channel (23) is gradually widened towards the first runner (3).

3. Hot runner mold according to claim 1, wherein the second feeding tube (4) has a feeding channel comprising a fourth channel (41), a fifth channel (42) and a sixth channel (43) which are communicated in sequence, the fourth channel (41) is located at the second feeding end, the sixth channel (43) is located at the second discharging end, the fourth channel (41) is gradually narrowed towards the fifth channel (42), and the sixth channel (43) is gradually widened towards the second flow channel (5).

4. Hot runner mold according to claim 1, characterized in that the first runner (3) is arranged perpendicular to the second runner (5).

5. Hot-runner mold according to claim 1, further comprising a control valve body for controlling the opening and closing of the first flow channel (3), and for controlling the opening and closing of the second flow channel (5).

6. Hot runner mold according to claim 5, characterized in that the control valve body comprises a drive part and a valve body comprising valve needles, which are arranged in the first flow channel (3) and the second flow channel (5), respectively.

7. Hot-runner mold according to claim 1, characterized in that a communication conduit (8) is provided between the place where the first flow channel (3) communicates with the second flow channel (5) and the hot-runner cartridge (7) in the mold body.

8. The hot-runner mold according to claim 7, wherein the communication channel is formed by a combination of a plurality of channels, the communication channel being arranged in a bent shape.

9. Hot runner mold according to claim 2, wherein a fastener (6) is provided outside each of the first and second feed tubes, the fastener having a clamping space for clamping the feed tube passing therethrough.

10. Hot runner mold according to claim 9, characterized in that the fastener (6) is a clip.