CN217968161U

CN217968161U - Injection mold capable of shortening length of main runner

Info

Publication number: CN217968161U
Application number: CN202222266363.2U
Authority: CN
Inventors: 张振; 朱能杰; 许讯
Original assignee: Shenzhen Insighters Medical Technology Co ltd
Current assignee: Shenzhen Insighters Medical Technology Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-12-06
Anticipated expiration: 2032-08-26

Abstract

An injection mold capable of shortening the length of a main runner, comprising: the mould comprises a plate A, a plate B, a front mould core, a rear mould core, a panel and a sprue bushing; the panel is arranged on the top surface of the plate A, the plate A is provided with a front mould mounting groove, the plate B is provided with a rear mould mounting groove, the front mould core is arranged in the front mould mounting groove, the rear mould core is arranged in the rear mould mounting groove, and the front mould core and the rear mould core form a product cavity after the plate A and the plate B are combined; the panel is provided with a panel avoidance hole, the A plate is provided with a front mold avoidance hole, and the panel avoidance hole is communicated with the front mold avoidance hole to form a through avoidance hole; the sprue bush is nested in the front mold core and extends to the through avoidance hole, the sprue bush is provided with a through injection molding flow passage, and the injection molding flow passage is communicated with the product cavity; the extending end of the squirt nozzle sleeve is used for being in butt joint with a nozzle of an injection molding machine, and the through avoiding hole is used for avoiding the nozzle of the injection molding machine. The shortened injection molding runner can reduce the flow length of the injection molding material and improve the flow rate of the injection molding material so as to improve the molding effect of injection molding products and reduce the waste of the injection molding material.

Description

Injection mold capable of shortening length of main runner

Technical Field

The application relates to the technical field of injection molds, in particular to an injection mold capable of shortening the length of a main runner.

Background

The injection mold is a general name of a mold used for plastic injection molding, and a plastic product with a complex appearance, high dimensional precision or an insert can be molded at one time by injecting a molten injection material into a product cavity through a main runner.

In an injection mold, the main flow passage is typically formed in a sprue bushing, which is typically secured to a mold face plate and extends into a product cavity of the mold to communicate the main flow passage with the product cavity. However, the sprue bushing is fixed on the mold panel, so that the length of the main runner is too long, the injection pressure of the molten injection molding material is gradually reduced due to the too long main runner, the injection molding effect is affected, the friction resistance of the molten injection molding material flowing is increased due to the too long main runner, the flow speed of the injection molding material is reduced, the molten injection molding material is solidified in advance, the molding effect of the injection molding product is affected, and the waste of the injection molding material is also caused.

SUMMERY OF THE UTILITY MODEL

The application aims at providing the injection mold capable of shortening the length of the main runner so as to improve the molding effect of injection molding products and reduce the waste of injection molding materials.

The application provides a can shorten injection mold of sprue length, include: the plate A, the plate B, the front mold core, the rear mold core, the panel and the sprue bushing; the panel is installed on the top surface of the plate A, the plate A is provided with a front mold installing groove, the plate B is provided with a rear mold installing groove, the front mold core is arranged in the front mold installing groove, the rear mold core is arranged in the rear mold installing groove, and the front mold core and the rear mold core form a product cavity after the plate A and the plate B are assembled; the panel is provided with a panel avoidance hole, the A plate is provided with a front mold avoidance hole, and the panel avoidance hole is communicated with the front mold avoidance hole to form a through avoidance hole; the sprue bushing is nested in the front mold core, extends to the through avoidance hole, is sleeved with a through injection flow channel, and is communicated with the product cavity; the extending end of the squirt nozzle sleeve is used for being in butt joint with a nozzle of an injection molding machine, and the through avoidance hole is used for avoiding the nozzle of the injection molding machine.

In one embodiment, the panel avoiding hole is internally provided with a supporting part, and the supporting part is used for supporting a nozzle of the injection molding machine.

In one embodiment, the supporting portion is a supporting conical surface disposed on the wall of the panel avoiding hole.

In one embodiment, the top end of the squirt nozzle sleeve is provided with a matching surface adapted to a nozzle of an injection molding machine.

In one embodiment, the mating surface is a mating conical surface, and the bottom end of the mating conical surface is a top end port of the injection molding runner.

In one embodiment, the front mold core and the rear mold core are further provided with a sub-runner after the plate a and the plate B are closed, one end of the sub-runner is communicated with the injection runner, and the other end of the sub-runner is communicated with the product cavity.

In one embodiment, the bottom surface of the front mold core is flush with the bottom surface of the plate a, and the top surface of the rear mold core is flush with the top surface of the plate B.

In one embodiment, the method further comprises: the holding ring, the holding ring set up in the panel, just the inner circle of holding ring with the panel dodges the hole and link up, the holding ring is used for fixing a position the injection molding machine.

According to the injection mold capable of shortening the length of the main runner, the shortened injection runner can reduce the flow length of a molten injection material so as to reduce the friction force with the injection runner, improve the flow rate of the injection material, and slow down the advanced solidification of the injection material after improving the flow rate, so that the molding effect of plastic products is improved, and the waste of the injection material is reduced. Meanwhile, the shortened injection molding runner can also enable the molten injection molding material pressurized by the injection molding machine to keep injection pressure under the action of a nozzle of the injection molding machine, so that the injection molding effect is improved.

Drawings

FIG. 1 is a schematic structural diagram of an injection mold capable of shortening the length of a sprue according to the present application;

FIG. 2 is a schematic view of a nozzle of an injection molding machine butted with an injection mold capable of shortening the length of a main runner.

Description of reference numerals:

the injection molding machine comprises a plate A10, a front mold mounting groove 11, a front mold avoiding hole 12, a plate B20, a rear mold mounting groove 21, a front mold core 30, a rear mold core 40, a panel 50, a panel avoiding hole 51, a supporting conical surface 52, a sprue bushing 60, an injection molding flow channel 61, a shunt channel 62, a matching conical surface 63, a positioning ring 70, an ejector pin base plate 80, an ejector pin 81, an ejector pin return spring 82, a base plate 83, square iron 84, a product cavity 100, an injection molding machine nozzle 200 and a matching supporting surface 201.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments have been given like element numbers associated therewith. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in this specification in order not to obscure the core of the present application with unnecessary detail, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the description of the methods may be transposed or transposed in order, as will be apparent to a person skilled in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The ordinal numbers used herein for the components, such as "first," "second," etc., are used merely to distinguish between the objects described, and do not have any sequential or technical meaning. The term "connected" and "coupled" as used herein includes both direct and indirect connections (couplings), unless otherwise specified.

The application provides a can shorten injection mold of sprue length, wherein, sprue and injection mold's product die cavity intercommunication can inject the material of moulding plastics of fuse state to the product die cavity through the sprue, wait to form the goods after the material cooling solidification of moulding plastics. This application adopts the mode that can shorten sprue length to form injection mold, can make the material of moulding plastics keep corresponding injection pressure in the sprue, improves the effect of moulding plastics, and simultaneously, the sprue that shortens can reduce the flow length of the material of moulding plastics, and its velocity of flow is improved with the frictional force of sprue to corresponding reduction to can slow down the material of moulding plastics and solidify in advance, improve goods shaping effect, reduce the waste of the material of moulding plastics. In the following embodiments, the injection molding runner is a main runner.

Referring to fig. 1 and 2, the injection mold capable of shortening the length of the main runner provided by the present embodiment includes: the plate assembly comprises an A plate 10, a B plate 20, a front mold core 30, a rear mold core 40, a face plate 50 and a sprue bushing 60. Taking the perspective shown in fig. 1 and 2 as an example, the a plate 10 is disposed above the B plate 20, the a plate 10 can be assembled with or disassembled from the B plate 20, the panel 50 is mounted on the top surface of the a plate 10, the a plate 10 is provided with a front mold mounting groove 11, the front mold core 30 is disposed in the front mold mounting groove 11, the B plate 20 is provided with a rear mold mounting groove 21, the rear mold core 40 is disposed in the rear mold mounting groove 21, and the front mold core 30 and the rear mold core 40 form the product cavity 100 after the a plate 10 and the B plate 20 are assembled. The panel 50 is provided with a panel avoidance hole 51, the A plate 10 is provided with a front mold avoidance hole 12, and the panel avoidance hole 51 is communicated with the front mold avoidance hole 12 to form a through avoidance hole. The sprue bush 60 is nested in the front mold core 30, and in a preferred embodiment, the sprue bush 60 is fixedly connected with the front mold core 30 through a bolt, and more specifically, a flange is arranged on the sprue bush 60 and is fixedly connected with the front mold core 30 through a bolt. In this embodiment, the sprue bush 60 extends to the through-passing hole formed by the panel avoiding hole 51 and the front mold avoiding hole 12, the sprue bush 60 is provided with a through-passing injection runner 61, the injection runner 61 is communicated with the product cavity 100, and the injection runner 61 is further communicated with the through-passing avoiding hole. The sprue bushing 60 extends to the extending end of the through avoiding hole for butt joint with the injection molding machine nozzle 200, and the through avoiding hole is used for avoiding the injection molding machine nozzle 200.

In this embodiment, the bottom surface of the front mold core 30 is flush with the bottom surface of the a plate 10, and the top surface of the rear mold core 40 is flush with the top surface of the B plate 20, so that the flush state is favorable for the sealing performance after the a plate 10 and the B plate 20 are assembled.

The sprue bushing 60 is fixed to the front mold core 30 such that the length of the through-type injection molding runner 61 disposed inside the sprue bushing 60 is substantially equal to the thickness of the front mold core 30, which can relatively shorten the length of the injection molding runner 61 compared to the conventional arrangement of fixing the sprue bushing 60 to the panel 50. The injection molding machine nozzle 200 can directly butt with the sprue bush 60 after passing through the avoidance hole, wherein the injection molding machine is an injection molding device for manufacturing plastic products with various shapes by using the injection mold with molten injection molding materials, and the injection molding machine can heat the injection molding materials and can also apply high pressure to the injection molding materials so that the injection molding materials are ejected to fill the product cavity 100 of the injection mold. In this embodiment, the injection molding machine nozzle 200 can inject a molten injection molding material into the injection runner 61, and the injection molding material flows into the product cavity 100 through the injection runner 61, and a plastic product (finished product) is formed after the injection molding material is cooled and solidified.

In this embodiment, the shortened injection runner 61 can reduce the flow length of the injection material in a molten state, so as to reduce the friction with the injection runner, improve the flow rate of the injection material, and slow down the early solidification of the injection material after improving the flow rate, so as to improve the molding effect of the plastic product and reduce the waste of the injection material. Meanwhile, the shortened injection runner 61 also enables the molten injection molding material pressurized by the injection molding machine to maintain the injection pressure under the action of the injection molding machine nozzle 200, thereby improving the injection molding effect.

It can be understood that the size of the through-passing-avoiding hole formed by the panel-avoiding hole 51 and the front mold-avoiding hole 12 can satisfy the size of the injection molding machine nozzle 200, that is, the size of the through-passing-avoiding hole can ensure that the injection molding machine nozzle 200 moves out of or enters the through-passing-avoiding hole. In other embodiments, the panel avoiding hole 51 and the front mold avoiding hole 12 may have the same radial size and satisfy the size of the injection molding machine nozzle 200, and of course, the panel avoiding hole 51 and the front mold avoiding hole 12 having the same radial size may be coaxial.

Referring to fig. 1 and 2, in an embodiment of the present application, the injection mold capable of shortening the length of the main runner further includes: the positioning ring 70 is disposed on the panel 50, and an inner ring of the positioning ring 70 is communicated with the panel avoiding hole 51, and the positioning ring 70 is used for positioning the injection molding machine to ensure that a center of the injection nozzle 200 of the injection molding machine is aligned (coaxial) with a center of the injection runner 61 disposed inside the squirt nozzle sleeve 60, thereby avoiding deviation.

A support portion for supporting the injection molding machine nozzle 200, specifically, is provided in the panel escape hole 51.

Specifically, the supporting portion is a supporting conical surface 52 disposed on the wall of the panel avoiding hole 51, and a matching supporting surface 201 is disposed on the outer wall of the injection molding machine nozzle 200, in a preferred embodiment, the supporting conical surface 52 is an inverted conical shape, the matching supporting surface is a conical shape, and the supporting conical surface is coaxial with the matching supporting surface, the matching supporting surface 201 matches with the supporting conical surface 52, and the supporting conical surface 52 is formed to block the matching supporting surface 201, so as to assist in keeping the center of the injection molding machine nozzle 200 aligned with the center of the injection molding runner 61.

In one embodiment of the present application, the top end of sprue bushing 60 is provided with a mating surface adapted to the injection molding machine nozzle 200 to facilitate mating of the injection molding machine nozzle 200 with the sprue bushing 60.

Specifically, the mating surface is a mating taper 63, and accordingly, the injection molding machine nozzle 200 is configured to conform to the tapered shape of the mating taper 63 to facilitate mating of the injection molding machine nozzle 200 with the sprue bushing 60. The bottom end of the matching conical surface 63 is the top end port of the injection runner 61.

With continued reference to fig. 1 and 2, the injection mold capable of shortening the length of the main runner further includes: the rear mold insert comprises a thimble base plate 80, a thimble 81, a thimble return spring 82, a base plate 83 and square irons 84, wherein the square irons 84 are connected between the B plate 20 and the base plate 83 to form an installation space between the B plate 20 and the base plate 83, the thimble base plate 80 is arranged in the installation space, the thimble 81 penetrates through the B plate 20 and the rear mold insert 40, the thimble 81 is connected to the thimble base plate 80, and the thimble base plate 80 can move up and down to drive the thimble 81 to move synchronously. After the plastic product is manufactured, the a plate 10 and the B plate 20 are opened, the ejector pin 81 moves upward under the action of the ejector pin bottom plate 80 to eject the plastic product out to be separated from the product cavity, the ejector pin return spring 82 is arranged between the B plate 20 and the bottom plate 83 (in fig. 1, the connection of the ejector pin return spring 82 is blocked due to the view angle of the ejector pin bottom plate 80), and the ejector pin return spring 82 is used for lifting the ejector pin 81 upward by the push plate 83 and separating the plastic product from the product cavity, so that the ejector pin bottom plate 80 can be reset.

In one embodiment of the present application, the product cavity 100 is located at a side of the sprue bush 60 and spaced apart from the sprue bush 60, so that in order to ensure that the molten injection molding material can be injected into the product cavity 100, the front mold core 30 and the rear mold core 40 are further formed with a runner 62 after the a plate 10 and the B plate 20 are clamped together, one end of the runner 62 is communicated with the injection runner 61 (a bottom end port of the injection runner 61), and the other end of the runner 62 is communicated with the product cavity 100, and the molten injection molding material injected through the injection runner 61 is injected into the product cavity 100 through the runner 62. As shown in fig. 1 and 2, the front mold core 30 and the rear mold core 40 form at least two product cavities 100 after the a plate 10 and the B plate 20 are closed, and thus, the number of the branch passages 62 equal to the number of the product cavities 100 is provided.

In summary, the injection mold capable of shortening the length of the main runner provided by the application, the shortened injection runner can reduce the flow length of the molten injection material, so as to reduce the friction force with the injection runner, improve the flow rate of the injection material, slow down the advanced solidification of the injection material after improving the flow rate, improve the molding effect of the plastic product, and reduce the waste of the injection material. Meanwhile, the shortened injection molding runner can also enable the molten injection molding material pressurized by the injection molding machine to keep injection pressure under the action of a nozzle of the injection molding machine, so that the injection molding effect is improved.

The foregoing is a more detailed description of the present application in connection with specific embodiments thereof, and it is not intended that the present application be limited to the specific embodiments thereof. It will be apparent to those skilled in the art from this disclosure that many more simple derivations or substitutions can be made without departing from the inventive concepts herein.

Claims

1. An injection mold capable of shortening the length of a main runner, which is characterized by comprising: the mould comprises a plate A, a plate B, a front mould core, a rear mould core, a panel and a sprue bushing; the panel is mounted on the top surface of the plate A, the plate A is provided with a front mold mounting groove, the plate B is provided with a rear mold mounting groove, the front mold core is arranged in the front mold mounting groove, the rear mold core is arranged in the rear mold mounting groove, and the front mold core and the rear mold core form a product cavity after the plate A and the plate B are assembled; the panel is provided with a panel avoidance hole, the A plate is provided with a front mold avoidance hole, and the panel avoidance hole is communicated with the front mold avoidance hole to form a through avoidance hole; the sprue bush is nested in the front mold core, extends to the through avoidance hole and is provided with a through injection molding flow passage communicated with the product cavity; the extending end of the squirt nozzle sleeve is used for being in butt joint with a nozzle of an injection molding machine, and the through avoidance hole is used for avoiding the nozzle of the injection molding machine.

2. An injection mold with a shortened sprue length as claimed in claim 1, wherein said panel relief holes have supports therein for supporting the injection molding machine nozzle.

3. An injection mold for shortening the length of a sprue according to claim 2 wherein said support portion is a support taper provided on the wall of said panel relief hole.

4. An injection mold having a shortened sprue length in accordance with claim 1 wherein said sprue bushing has a top end provided with a mating surface adapted to a nozzle of an injection molding machine.

5. An injection mold capable of shortening the length of the main runner according to claim 4, wherein the mating surface is a mating conical surface, and the bottom end of the mating conical surface is the top end port of the injection runner.

6. The injection mold capable of shortening the length of the sprue according to claim 1, wherein a runner is further formed on the front mold core and the rear mold core after the mold assembly of the plate a and the plate B, one end of the runner is communicated with the injection runner, and the other end of the runner is communicated with the product cavity.

7. The injection mold of claim 1, wherein the bottom surface of the front mold core is flush with the bottom surface of the plate A, and the top surface of the rear mold core is flush with the top surface of the plate B.

8. An injection mold capable of shortening the length of a sprue according to claim 1 further comprising: the holding ring, the holding ring set up in the panel, just the inner circle of holding ring with the panel dodges the hole and link up, the holding ring is used for fixing a position the injection molding machine.