Refrigerator injection molding part mold opening device

Abstract

The utility model discloses a mold opening device for an injection molding part of a refrigerator, and particularly relates to the field of processing of injection molding parts, the mold opening device is embedded in an upper mold and a lower mold of the injection molding part, and comprises air pipe components mounted on the outer walls of the upper mold and the lower mold, magnetic mold opening parts mounted in the upper mold and the lower mold, and sealing parts matched with the magnetic mold opening parts, the magnetic mold opening parts in the upper mold and the lower mold provide power for mold closing and mold opening of the molds, and the sealing parts are driven by the magnetic mold opening parts to move in the upper mold and the lower mold so as to conduct pressure adjustment on the interiors of mold grooves of the upper mold and the lower mold. According to the utility model, the separation speed between the injection molding part and the mold is accelerated through air pressure, and the magnetic mold opening part is matched for separation and mold opening, so that the mold opening and demolding efficiency of the injection molding part is greatly improved, the surface of the injection molding part is not scratched and damaged, and the finished product quality of the injection molding part after demolding is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding part processing field more specifically, the utility model relates to a refrigerator injection molding part mold opening device. BACKGROUND

[0002] The refrigerator injection molding part is the key component in the refrigerator manufacturing, and its production process usually involves injection molding process. In the injection molding process, the mold opening device is a crucial equipment, which is responsible for opening the mold after injection molding is completed to take out the molded injection molding part. The refrigerator injection molding part mold generally includes an upper mold and a lower mold, and the mold opening device separates the upper mold from the lower mold after the injection molding part is molded. The traditional mold opening device is an external independent structure, which opens the mold from the outside during use, resulting in poor cooperation with the mold itself during the mold opening process, affecting the mold opening efficiency. SUMMARY

[0003] To solve the above technical problems, the utility model provides a refrigerator injection molding part mold opening device, which is embedded in the interior of the upper mold and the lower mold of the injection molding part, including a gas pipe assembly installed on the outer wall of the upper mold and the lower mold, a magnetic mold opening piece installed in the interior of the upper mold and the lower mold, and a sealing component cooperating with the magnetic mold opening piece. The magnetic mold opening piece in the interior of the upper mold and the lower mold provides power for the mold closing and opening of the mold, and the sealing component is driven by the magnetic mold opening piece to move in the interior of the upper mold and the lower mold to adjust the pressure in the interior of the mold groove of the upper mold and the lower mold.

[0004] In a preferred embodiment, a first through hole extending vertically, a second through hole arranged horizontally and a third through hole extending vertically are formed in the interior of the upper mold and the lower mold, the two ends of the second through hole are communicated with the first through hole and the third through hole respectively, and the end of the third through hole away from the second through hole is communicated with the interior of the mold groove. The sealing assembly seals the connection between the second through hole and the mold groove.

[0005] In a preferred embodiment, the magnetic mold opening piece is installed in the interior of the first through hole, and the magnetic mold opening piece includes an electromagnet, a sealing partition plate and a magnet arranged in the first through hole in sequence. The end of the electromagnet is flush with the mold closing surface of the upper mold and the lower mold.

[0006] The electromagnet and the sealing partition plate are fixedly installed in the first through hole, and the magnet is lifted and lowered in the first through hole.

[0007] In a preferred embodiment, the sealing component includes a sealing ring installed in the interior of the third through hole near the end of the mold groove and a sealing plug inserted in the sealing ring. A first connecting rod extending to the second through hole is connected to the sealing plug. A first limiting tube is sleeved outside the first connecting rod, and a first fixing rod is connected between the first limiting tube and the inner wall of the third through hole. A first spring is connected between the first limiting tube and the sealing plug.

[0008] In a preferred embodiment, a second connecting rod is further installed in the second through hole and the first through hole, one end of the second connecting rod is connected with the first connecting rod, the other end of the second connecting rod is connected with a third connecting rod extending into the first through hole, the other end of the third connecting rod is fixed on the magnet, a second limiting tube is sleeved outside the third connecting rod, a second fixed rod is connected between the second limiting tube and the inner wall of the first through hole, and a second spring is connected between the second limiting tube and the magnet.

[0009] In a preferred embodiment, the air pipe assembly comprises an air passage channel located inside the upper die and the lower die and communicating with the inside of the first through hole, a branch pipe is connected at the outer end of the air passage channel and fixed on the outer wall of the upper die and the lower die, and a main pipe is connected at the other end of the branch pipe.

[0010] The technical effects and advantages of the utility model are as follows:

[0011] 1. The mold opening device is embedded inside the upper die and the lower die, so that when the injection molding part is completed, the mold opening device can be better matched with the mold outside the mold, the mold opening operation is improved, and the mold opening efficiency is improved.

[0012] 2. The air pressure accelerates the separation speed between the injection molding part and the mold, cooperates with the magnetic mold opening part separation and mold opening, greatly improves the efficiency of the injection molding part mold opening and demolding, and does not scratch and damage the surface of the injection molding part, improves the finished product quality after the injection molding part product demolding. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the utility model;

[0014] Figure 2 It is a whole structure schematic view of the utility model; Figure 1

[0015] Figure 3 It is a whole structure schematic view of the utility model; Figure 2 .

[0016] Mark explanation: 1 upper die, 2 lower die, 3 mold groove, 4 first through hole, 5 second through hole, 6 third through hole, 7 electromagnet, 8 sealing partition, 9 magnet, 10 sealing ring, 11 sealing plug, 12 first connecting rod, 13 first limiting tube, 14 first fixed rod, 15 first spring, 16 second connecting rod, 17 third connecting rod, 18 second limiting tube, 19 second fixed rod, 20 second spring, 21 air passage channel, 22 branch pipe, 23 main pipe. DETAILED DESCRIPTION

[0017] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations will be obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0018] As Figures 1-3 shown, a mold opening device for a refrigerator injection molding part is embedded inside the upper mold 1 and the lower mold 2 of the injection molding part. The mold opening device includes an air pipe assembly installed on the outer walls of the upper mold 1 and the lower mold 2, a magnetic mold opening member installed inside the upper mold 1 and the lower mold 2, and a sealing member cooperating with the magnetic mold opening member. The magnetic mold opening member inside the upper mold 1 and the lower mold 2 provides power for the mold closing and mold opening of the mold. The sealing member is driven by the magnetic mold opening member to move inside the upper mold 1 and the lower mold 2, and adjusts the pressure inside the mold groove 3 of the upper mold 1 and the lower mold 2.

[0019] Based on the above, by embedding the mold opening device inside the upper mold 1 and the lower mold 2, when the mold opening is performed after the injection molding of the injection molding part, there is no need to cooperate the mold opening device with the mold outside the mold, which can better perform the mold opening operation and improve the mold opening efficiency.

[0020] Vertically extending first through holes 4, horizontally arranged second through holes 5, and vertically extending third through holes 6 are respectively opened inside the upper mold 1 and the lower mold 2. Both ends of the second through hole 5 are respectively connected to the first through hole 4 and the third through hole 6. One end of the third through hole 6 far from the second through hole 5 is connected to the inside of the mold groove 3. The sealing component seals the connection between the second through hole 5 and the mold groove 3.

[0021] Furthermore, the first through hole 4, the second through hole 5, and the third through hole 6 are integrally arranged, jointly forming a channel in the shape of "冖" and provided inside the upper mold 1 and the lower mold 2.

[0022] And inside the upper mold 1 and the lower mold 2, this channel is divided into left and right groups, and each group contains multiple such channels and is equidistantly distributed.

[0023] Among them, inside the upper mold 1, multiple channels in the left and right groups are symmetrically arranged through the mold groove 3 of the upper mold 1. Inside the lower mold 2, multiple channels in the left and right groups are symmetrically arranged through the mold groove 3 of the lower mold 2.

[0024] The magnetic mold opening member is installed inside the first through hole 4. The magnetic mold opening member includes an electromagnet 7, a sealing partition 8, and a magnet 9 sequentially arranged inside the first through hole 4. The end of the electromagnet 7 is flush with the mold closing surface of the upper mold 1 and the lower mold 2.

[0025] The electromagnet 7 and the sealing partition plate 8 are fixedly installed in the first through hole 4, and the magnet 9 is movably installed in the first through hole 4.

[0026] Further, the sealing partition plate 8 seals the end of the first through hole 4, and separates the inside of the first through hole 4 from one side of the electromagnet 7.

[0027] The sealing part includes a sealing ring 10 installed in the third through hole 6 near the end of the mold groove 3, a sealing plug 11 inserted into the sealing ring 10, a first connecting rod 12 extending to the second through hole 5 connected to the sealing plug 11, a first limiting tube 13 sleeved outside the first connecting rod 12, a first fixed rod 14 connected between the first limiting tube 13 and the inner wall of the third through hole 6, and a first spring 15 connected between the first limiting tube 13 and the sealing plug 11.

[0028] The second connecting rod 16 is further installed in the second through hole 5 and the first through hole 4, one end of the second connecting rod 16 is connected with the first connecting rod 12, the other end of the second connecting rod 16 is connected with a third connecting rod 17 extending into the first through hole 4, the other end of the third connecting rod 17 is fixed on the magnet 9, a second limiting tube 18 is sleeved outside the third connecting rod 17, a second fixed rod 19 is connected between the second limiting tube 18 and the inner wall of the first through hole 4, and a second spring 20 is connected between the second limiting tube 18 and the magnet 9.

[0029] Based on the above, when the upper die 1 and the lower die 2 are closed, the closing surfaces of the upper die 1 and the lower die 2 are in contact and fit together, at this time, the electromagnet 7 in the upper die 1 and the lower die 2 is controlled to be powered on, and a magnetic field with the same direction is generated, the electromagnet 7 in the upper die 1 and the lower die 2 will generate an adsorption force, which provides an auxiliary effect for the closing of the upper die 1 and the lower die 2, and at this time, the magnetic field direction of the electromagnet 7 is the same as the magnetic field direction of the magnet 9 in the first through hole 4, so that the electromagnet 7 powered on will also generate an adsorption force on the magnet 9, which will pull the magnet 9 in the first through hole 4 to the side of the sealing partition plate 8, as shown in the figure. Figure 2

[0030] Further, the magnet 9 moves to the side of the sealing partition plate 8, drives the third connecting rod 17 to move downward in the second limiting tube 18, drives the second connecting rod 16 to move downward in the second through hole 5, drives the first connecting rod 12 to move downward in the first limiting tube 13, and makes the sealing plug 11 at the end of the first connecting rod 12 inserted into the sealing ring 10, so that the position of the sealing plug 11 is flush with the inner wall of the mold groove 3 and the sealing ring 10, at this time, it is convenient to inject the raw material into the mold.

[0031] As shown in the figure. Figure 3 ​As shown, after the injection molding of the to-be-injected part, the control electromagnet 7 generates a magnetic field in the opposite direction, at this time, the upper mold 1 and the lower mold 2 are subjected to the repulsive force of the electromagnet 7, and the upper mold 1 and the lower mold 2 are pushed apart to open the mold and fall off the injection part, and in this process, the electromagnet 7 will also generate a repulsive force with the magnet 9, pushing the magnet 9 to move to the other end of the first through hole 4, while pulling the third connecting rod 17, the second connecting rod 16 and the first connecting rod 12 to move, so that the sealing plug 11 at the other end of the first connecting rod 12 moves out of the sealing ring 10, at this time, the third through hole 6, the second through hole 5 and the first through hole 4 in the mold groove 3 are in communication.

[0032] The air pipe assembly includes an air passage 21 located inside the upper mold 1 and the lower mold 2 and in communication with the inside of the first through hole 4, a branch pipe 22 fixed on the outer wall of the upper mold 1 and the lower mold 2 is connected to the outer end of the air passage 21, and a main pipe 23 is connected to the other end of the branch pipe 22.

[0033] Further, in the process of opening the mold and demolding, the main pipe 23 is connected to the external air pump equipment, and air is injected into the mold through the air pump, and the air passes through the main pipe 23, the branch pipe, the air passage 21 and the first through hole 4 in sequence, and then enters the mold groove 3 through the second through hole 5 and the third through hole 6, so that the air fills into the gap between the injection part and the mold groove 3, the air pressure accelerates the separation speed between the injection part and the mold, and the magnetic mold opening part is separated and opened, which greatly improves the efficiency of the injection part opening and demolding, and does not scratch and damage the surface of the injection part, and improves the finished product quality after the injection part product demolding.

[0034] Further, the reset spring is sleeved outside the first connecting rod 12 and the third connecting rod 17, which facilitates the auxiliary reset of the connecting rod part during injection and demolding, and reduces unnecessary shaking and noise.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary skilled in the art and related fields without creative labor should belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to the conventional means in the art.

Claims

1. A refrigerator injection molding part mold opening device, the mold opening device is embedded in the inside of an injection molding part upper mold and a lower mold, characterized in that, The application relates to a mold closing and opening device, which comprises a gas pipe assembly installed on the outer wall of an upper mold and a lower mold, a magnetic mold opening assembly installed in the inner part of the upper mold and the lower mold, and a sealing component matched with the magnetic mold opening assembly.

2. The refrigerator injection molding part opening device according to claim 1, characterized in that: A first through hole extending vertically, a second through hole arranged horizontally and a third through hole extending vertically are arranged in the inner part of the upper mold and the lower mold, the two ends of the second through hole are communicated with the first through hole and the third through hole respectively, and the end of the third through hole far from the second through hole is communicated with the inner part of a mold groove.

3. The refrigerator injection molding part opening device according to claim 2, characterized in that: The magnetic mold opening assembly is installed in the first through hole, and the magnetic mold opening assembly comprises an electromagnet, a sealing partition plate and a magnet arranged in the first through hole in sequence. The electromagnet and the sealing partition plate are fixedly installed in the first through hole, and the magnet is lifted and lowered in the first through hole.

4. The refrigerator injection molding part opening device according to claim 3, characterized in that: The sealing component comprises a sealing ring installed in the inner part of the third through hole close to the mold groove and a sealing plug inserted in the sealing ring, a first connecting rod extending to the second through hole is connected to the sealing plug, a first limiting pipe is sleeved outside the first connecting rod, a first fixing rod is connected between the first limiting pipe and the inner wall of the third through hole, and a first spring is connected between the first limiting pipe and the sealing plug.

5. The refrigerator injection molding part opening device according to claim 4, characterized in that: A second connecting rod is further installed in the second through hole and the first through hole, one end of the second connecting rod is connected with the first connecting rod, the other end of the second connecting rod is connected with a third connecting rod extending into the first through hole, the other end of the third connecting rod is fixed on the magnet, a second limiting pipe is sleeved outside the third connecting rod, a second fixing rod is connected between the second limiting pipe and the inner wall of the first through hole, and a second spring is connected between the second limiting pipe and the magnet.

6. The refrigerator injection molding part opening device according to claim 2, characterized in that: The gas pipe assembly comprises a gas channel in the inner part of the upper mold and the lower mold and communicated with the inner part of the first through hole, a branch pipe fixed on the outer wall of the upper mold and the lower mold is connected to the outer end of the gas channel, and a main pipe is connected to the other end of the branch pipe.

Images