CN110561702A

CN110561702A - Injection mould

Info

Publication number: CN110561702A
Application number: CN201810569728.4A
Authority: CN
Inventors: 王昌同; 邓璨
Original assignee: Shenzhen Yuzhan Precision Technology Co ltd
Current assignee: Shenzhen Yuzhan Precision Technology Co ltd
Priority date: 2018-06-05
Filing date: 2018-06-05
Publication date: 2019-12-13

Abstract

The invention provides an injection mold, which is used for injection molding of a workpiece and comprises a female mold, a female mold core arranged on the female mold, a male mold arranged opposite to the female mold, and a male mold core arranged on the male mold, wherein the female mold core is provided with an upper surface and a lower surface which are oppositely arranged, the upper surface faces the male mold, the upper surface of the female mold core is provided with a molding groove, a plurality of hot runners are arranged inside the female mold core, one end of each hot runner is connected with a sprue, the sprue is arranged on the upper surface of the female mold core and is communicated with the molding groove, the injection mold further comprises a vibration device, the vibration device comprises a main body part and a vibration part connected with the main body part, the vibration part penetrates through the female mold core, and the vibration part is arranged between two adjacent hot runners. The vibrating device of the injection mold vibrates the cavity insert so as to enhance the bonding strength of the plastic at the bonding line.

Description

Injection mould

Technical Field

The invention relates to the field of molds, in particular to an injection mold.

Background

An injection mold belongs to the field of injection molding and is used for producing products or parts with various shapes, in particular to a final molded product which is obtained by injecting heated and melted plastic into a mold cavity under high pressure and cooling and solidifying the plastic. Some injection molded products are provided with inserts, such as metal sheets, in the injection mold to form a composite of metal and plastic.

Generally, an injection mold is provided with a plurality of plastic gates, and a joint line is easily formed at the joint of the gates. Because the temperature at the joint line is lower, the plastics are difficult to be fully fused, so the bonding strength of the plastics at the joint line is weaker. When the product is subjected to surface treatment or machining subsequently, the joint line of the product is easy to break, so that the production yield is low.

Disclosure of Invention

In view of the above, it is necessary to provide an injection mold capable of improving the bonding strength of a product.

The utility model provides an injection mold for carry out injection moulding to work piece, it includes the female mould board, locate the master model on the female mould board, the public template that sets up with the female mould board relatively to and locate the public mould on the public template, the master model has relative upper surface and the lower surface that sets up, the upper surface is towards public mould sets up, the upper surface of master model is equipped with the shaping groove, the inside a plurality of hot runners that are equipped with of master model, every the one end of hot runner is connected with the runner, the runner is located the upper surface of master model and with the shaping groove is linked together, injection mold still includes vibrating device, vibrating device include the main part and with the vibration portion that the main part is connected, vibration portion wears to establish in the master model, just vibration portion locates adjacent two between the hot runner.

Among the above-mentioned injection mold, because vibrating device's vibration position is between two runners, vibrating device applys the vibration to cavity benevolence, can promote the plastic of joint line department to fuse each other, with the joint strength of reinforcing joint line department plastic, thereby promote the holistic joint strength of product, promoted the production yield.

Drawings

Fig. 1 is a schematic perspective view of an injection mold according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of the injection mold shown in fig. 1.

Fig. 3 is a schematic perspective exploded view of the injection mold shown in fig. 1 from another angle.

Fig. 4 is a schematic perspective view of the cavity and the vibrating device of the injection mold shown in fig. 1.

Fig. 5 is an exploded perspective view of the cavity insert and the vibration device shown in fig. 4.

Fig. 6 is a cross-sectional view of the cavity insert and the vibration device shown in fig. 4 taken along the line V-V.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, the present invention provides an injection mold 100 for injection molding a workpiece 200 embedded in the injection mold 100. In the present embodiment, the workpiece 200 is an iron member, but is not limited thereto, and the workpiece 200 may also be an aluminum member or other metal members.

The injection mold 100 includes a female mold 10, a female mold core 20 disposed on the female mold 10, a male mold 30 disposed opposite to the female mold 10, a male mold core 40 disposed on the male mold 30, and a vibrating device 50.

The master mold 10 is substantially rectangular, the master mold 10 is connected to an injection machine (not shown), the master mold includes a master mold plate 11, a hot runner plate 12 and a master mold fixing plate 13, which are connected in sequence, the master mold plate 11 is provided with a first receiving groove 111, and the first receiving groove 111 is rectangular and is used for receiving the master mold insert 20. In the present embodiment, the number of the first receiving grooves 111 is two, but the present invention is not limited thereto, and the number of the first receiving grooves 111 may be one or more than two. The female mold fixing plate 13 is provided with a filling nozzle 14 for injecting plastic.

The cavity insert 20 is substantially rectangular and disposed in the first receiving groove 111 of the cavity plate 11. The cavity insert 20 has an upper surface 201 and a lower surface 202 opposite to each other, and the upper surface 201 faces the core insert 40.

Referring to fig. 2 and fig. 3, the male mold 30 is substantially rectangular, the male mold 30 includes a male mold plate 31, an ejector plate 32 and a male mold fixing plate 33 connected in sequence, a second receiving slot 311 is formed in a side of the male mold plate 31 facing the female mold 10, and the second receiving slot 311 is rectangular and is used for receiving the male mold insert 40. The ejector plate 32 is used to eject the injection-molded workpiece from the male mold plate 31 to complete the mold release. In the present embodiment, the number of the second receiving grooves 311 is two, but the present invention is not limited thereto, and the number of the second receiving grooves 311 may be one or more than two.

The core insert 40 is substantially rectangular and disposed in the second receiving groove 311 of the core plate 31. The surface of the core insert 40 facing the cavity insert 20 is provided with a fixing groove 41, and the fixing groove 41 is used for accommodating the workpiece 200.

Referring to fig. 4 to fig. 6, a plurality of hot runners 21 and heat insulation oil passages 22 are disposed in the cavity insert 20, and a molding groove 23 and a flash well 24 are disposed on an upper surface 201 of the cavity insert 20.

Each hot runner 21 is disposed through the cavity insert 20. The top of the hot runner 21 is connected with a gate 211, and the gate 211 is disposed on the upper surface 201 of the cavity insert 20. In the present embodiment, the number of the hot runner 21 and the number of the gates 211 are plural, and fig. 5 illustrates only two gates 211 for the sake of understanding.

The heat insulation oil path 22 is disposed around the plurality of hot runners 21 and includes a plurality of criss-cross branches. The heat-insulating oil passage 22 serves as a flow passage for heat-insulating liquid, so that the injection mold 100 can maintain a certain temperature.

The molding groove 23 of the cavity 20 corresponds to the fixing groove 41 of the core 40, and when the cavity 20 and the core 40 are closed, the molding groove 23 and the fixing groove 41 together form a cavity in which a workpiece is accommodated and a plastic part 300 is formed.

The molding groove 23 is in communication with the gate 211, so that the molten plastic can flow through the hot runner 21 to the gate 211 and into the molding groove 23 to form the plastic part 300 in the molding groove 23.

The overflow well 24 is a groove formed on the cavity insert 20, and the overflow well 24 is disposed adjacent to the gate 211 and communicated with the molding groove 23 for receiving the plastic overflowing from the molding groove 23. In the present embodiment, the flash well 24 is located between two adjacent gates 211.

The middle part of one side of the cavity insert 20 is provided with a mounting groove 25, and the mounting groove 25 is rectangular and penetrates through the upper surface 201 of the cavity insert 20. The bottom of the mounting groove 25 is provided with a mounting hole 251, and the mounting hole 251 is positioned below the overflow well 24 and used for mounting the vibration device 50.

The vibrating device 50 is disposed on one side of the cavity insert 20 and between two adjacent gates 211. The vibration device 50 includes a main body 51 and a vibration portion 52 connected to the main body 51. The main body 51 is provided with a vibration source, the vibration portion 52 is substantially rod-shaped, the vibration portion 52 is provided protruding from one side of the main body 51, and the vibration portion 52 can vibrate by being driven by the main body 51. The vibrating portion 52 is arranged in the mounting hole 251 of the cavity insert 20 in a penetrating manner, the vibrating portion 52 corresponds to the overflow well 24 and is located between two adjacent hot runners 21, and the vibrating portion 52 is used for applying vibration to the cavity insert.

In the present embodiment, the vibration device 50 is an ultrasonic vibration device 50, but it is understood that in other embodiments, the vibration device 50 may be a mechanical vibration device 50.

When the die is used, the female die 10 is separated from the male die 30, the workpiece 200 is placed in the fixing groove 41 of the male die core 40, then the female die 10 and the male die 30 are close to each other, the female die core 20 and the male die core 40 are closed, and after the die is closed, the fixing groove 41 and the forming groove 23 form a die cavity together. Then, the molten plastic is injected into the hot runner 21 of the master mold through the sprue 14 of the master mold 10 and flows into the cavity through the gate 211 to mold the plastic part 300 connected to the workpiece 200. After cooling, the cavity 20 is separated from the core 40, and the molded workpiece 200 can be removed.

The plastic between the two gates 211 is easy to form a joint line, and since the vibrating portion 52 of the vibrating device 50 is located between the two gates 211, the vibrating device 50 applies vibration to the cavity insert 20, so that the plastic at the joint line can be promoted to be fused with each other, thereby enhancing the bonding strength of the plastic at the joint line. Meanwhile, the vibration can cause the temperature of the plastic at the joint line to rise, the temperature loss at the joint line is prevented from influencing the strength of the plastic, the strength of the plastic at the joint line is further improved, and the joint line is prevented from being broken, so that the overall bonding strength of the product is improved, and the production yield is improved.

It can be understood that when the number of the gates 211 on the cavity insert 20 is larger, the number of the vibration devices 50 can be correspondingly larger, and each vibration device 50 is respectively located between two adjacent gates 211 to improve the strength of the plastic at the joint line.

Finally, it should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides an injection mold for carry out injection moulding to the work piece, it includes the master model, locates the cavity benevolence on the master model, the public mould that sets up relatively with the master model to and locate the public mould benevolence on the public mould, its characterized in that: the injection mold comprises a cavity, a male mold and a female mold, wherein the cavity is provided with an upper surface and a lower surface which are oppositely arranged, the upper surface faces the male mold, a molding groove is formed in the upper surface of the cavity, a plurality of hot runners are arranged in the cavity, one end of each hot runner is connected with a sprue, the sprue is arranged on the upper surface of the cavity and communicated with the molding groove, the injection mold further comprises a vibrating device, the vibrating device comprises a main body part and a vibrating part connected with the main body part, the vibrating part is arranged in the cavity in a penetrating mode, and the vibrating part is arranged between every two adjacent hot runners.

2. The injection mold of claim 1, wherein: and the upper surface of the female die core is provided with an overflow well, and the overflow well is arranged close to the pouring gate and communicated with the forming groove.

3. The injection mold of claim 2, wherein: the flash well is located between two adjacent gates, and the vibration part corresponds to the flash well.

4. The injection mold of claim 1, wherein: the mounting groove is rectangular and penetrates through the upper surface of the cavity insert, a mounting hole is formed in the bottom of the mounting groove, and the vibrating portion penetrates through the mounting hole.

5. The injection mold of claim 1, wherein: the heat-insulating oil way is arranged in the cavity insert and surrounds the plurality of hot runners.

6. The injection mold of claim 1, wherein: the surface of the male die core facing the female die core is provided with a fixing groove, the forming groove corresponds to the fixing groove, and the forming groove and the fixing groove jointly form a cavity for accommodating the workpiece.

7. The injection mold of claim 1, wherein: the female die comprises a female die plate, a hot runner plate and a female die fixing plate which are sequentially connected, a first accommodating groove is formed in the female die plate, and the female die core is arranged in the first accommodating groove.

8. The injection mold of claim 7, wherein: and the female die fixing plate is provided with a filling nozzle for injecting plastic.

9. The injection mold of claim 1, wherein: the male die comprises a male die plate, an ejector plate and a male die fixing plate which are sequentially connected, a second accommodating groove is formed in one side, facing the female die, of the male die plate, and the male die core is arranged in the second accommodating groove.

10. The injection mold of claim 1, wherein: the vibration device is an ultrasonic vibration device.