WO2018068175A1

WO2018068175A1 - Silicone rubber plastic composite component forming apparatus and forming method

Info

Publication number: WO2018068175A1
Application number: PCT/CN2016/101637
Authority: WO
Inventors: 黄佳莉
Original assignee: 东莞太洋橡塑制品有限公司
Priority date: 2016-10-10
Filing date: 2016-10-10
Publication date: 2018-04-19

Abstract

A silicone rubber plastic composite component forming apparatus and a forming method. The forming apparatus comprises: a silicone rubber forming upper mold A (20); a silicone rubber forming upper mold B (30); a plastic forming upper mold (40); a shared lower mold A (50); a shared lower mold B (60); and a movement mechanism (70) for actuating a back-and-forth movement of the shared lower molds A (50) and B (60). The silicone rubber forming upper mold A (20), the silicone rubber forming upper mold B (30), and the plastic forming upper mold (40) are arranged side-by-side. The plastic forming upper mold (40) is situated between the silicone rubber forming upper mold A (20) and the silicone rubber forming upper mold B (30). The shared lower molds A (50) and B (60) are both connected to the movement mechanism (70). The shared lower molds A (50) and B (60) can move, when actuated by the movement mechanism (70), back and forth below the silicone rubber forming upper mold A (20), the silicone rubber forming upper mold B (30), and the plastic forming upper mold (40). The movement mechanism (70) is used for actuating a back-and-forth movement of the shared lower molds A (50) and B (60) corresponding to the silicone rubber forming upper molds A (20) and B (30), and the plastic forming upper mold (40). The apparatus of the present invention is time efficient. A mold moving operation and interlocking production are used to improve mold utilization rates and improve production efficiency.

Description

Silicone plastic composite part molding equipment and molding method

Technical field

The invention relates to the technology of the production of composite parts, in particular to a molding equipment and a molding method of a silicone plastic composite part.

Background technique

Control panels are installed on electronic products and various household appliances, and the control panels are mostly plastic buttons or silicone buttons. The feel of the plastic button is hard, the softness and hardness of the silicone button is moderate, the hand feel is better, and the use range is wide. The production of traditional silicone button is made by traditional liquid silicone IM injection molding. The material is separately molded in batches, and then the material is manually placed into the silicone mold. Finally, the liquid silicone IM is injection molded. This manufacturing method has the following problems, and the mold design needs to reserve materials. The gap is set up (otherwise, the zero-gap material can't be placed), and it is easy to have the risk of overflowing glue. Moreover, the flatness of the button cannot be guaranteed, and it is easy to produce uneven glue. In addition, the manual labor required for this manufacturing method is large. Moreover, such silicone buttons usually require first injection molding and then silicone molding, and the molding cycle of the silicone is about twice the injection molding cycle. In this case, how to work on the silicone molding die and the plastic molding die, Improving mold utilization and production efficiency is an urgent problem to be solved in the industry. Therefore, the existing silicone button device and production method should be improved to solve the above problems.

Summary of the invention

In view of this, the present invention is directed to the absence of the prior art, and the main object thereof is to provide a silicone plastic composite molding device and a molding method, which are driven by a moving mechanism to drive the common lower molds A and B to reciprocate and corresponding to the silicone molding. Molds A and B and the plastic molding upper die work together to make full use of time, mold shifting, and linkage production to improve production efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions:

A silicone plastic composite molding device comprises a silicone molding upper mold A, a silicone molding upper mold B, a plastic molding upper mold, a shared lower mold A, a shared lower mold B, and a moving mechanism for driving the common lower molds A and B to move back and forth. The silicone molding upper mold A, the silicone molding upper mold B, and the plastic molding upper mold are arranged side by side, and the plastic molding upper mold is located between the silicone molding upper mold A and the silicone molding upper mold B, and the common lower molds A and B are both The moving mechanism is connected, and the common lower molds A and B are reciprocally movable under the moving mechanism to be located under the silicone molding upper mold A, the silicone molding upper mold B and the plastic molding upper mold.

As a preferred solution, the device further includes a rack on which a workbench is disposed, and three sets of support frames are arranged side by side on the workbench, and the above-mentioned silicone molding upper molds A and B are mounted on both sides. On the frame, the plastic molding upper die is mounted on the middle support frame, and a driving device is respectively arranged above each support frame, and the silicone molding upper molds A, B and the plastic molding upper mold are respectively connected with the corresponding driving devices; A moving space for reciprocating movement of the common lower molds A, B is formed under the rack, the moving mechanism is disposed at the bottom of the moving space, and the common lower molds A, B are mounted above the moving mechanism.

As a preferred solution, an automatic gate grid is disposed at both ends of the moving space.

As a preferred solution, the intermediate support frame is provided with a hopper for feeding the plastic molding upper mold.

As a preferred solution, the periphery of the rack is provided with a plurality of heat dissipation holes for ventilation and ventilation of the device.

A molding method for a silicone plastic composite member, which comprises the silicone plastic composite molding device according to any one of claims 1 to 5, comprising the following steps:

S1, the common lower mold A is located under the plastic molding upper mold, the common lower mold B is located under the silicone molding upper mold B, and the plastic molding upper mold performs the injection molding operation on the common lower mold A. After the injection molding is completed, the common lower mold A and the common one are shared. Mode B moves to the left together;

After S2, the shared lower mold A and the common lower mold B are moved to the left, the common lower mold A is located below the silicone molding upper mold A, the common lower mold B is located below the plastic molding upper mold, and the silicone molding upper mold A performs the common lower mold A. Silica gel injection molding; at the same time, the plastic molding upper mold performs the injection molding operation on the common lower mold B, and when the injection molding is completed, the common lower mold A silica gel injection molding is completed half;

S3, the common lower mold B moves to the right, the common lower mold B is located under the silicone molding upper mold B, and the silicone molding upper mold B performs the silicone injection molding on the common lower mold B, and the common lower mold A remains stationary, and continues to be injection molded;

After the injection molding of the common lower mold A silica gel is completed, the finished product is taken out. At this time, the common lower mold B silica gel is injection-molded and finished half, the common lower mold B is kept still, and the common lower mold A is moved to the right to the lower side of the plastic molding upper mold. The injection molding is resumed. When the injection molding is completed, the common lower mold B is also injection molded, and the finished product is taken out;

S5, the common lower mold A and the common lower mold B move to the left together, the common lower mold A is located under the silicone molding upper mold A, the silicone molding upper mold A performs the silicone injection molding on the common lower mold A, and the common lower mold B is located in the plastic molding. Below the upper mold, the plastic molding upper mold performs injection molding on the common lower mold B, and then repeats the above S2, and sequentially circulates.

The present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions that the common lower molds A and B are reciprocated by using a moving mechanism to correspond to the silicone molding upper molds A and B and The plastic molding upper mold works together, so that under the condition that the molding time of the silicone rubber is about twice the plastic molding time, the time is fully utilized, the mold shifting operation, the linkage production, and the manual pick-and-place operation are performed, and the mold utilization rate is improved. It also improves the production efficiency (up 50%), and the molding method does not need to reserve the material assembly gap, which overcomes the risk of overflow and ensures the flatness of the product.

DRAWINGS

Figure 1 is a perspective view of the apparatus of the present invention;

2 is a front view of the device of the present invention;

3 is a schematic view showing the distribution state of each mode of the molding step 1 of the present invention;

4 is a schematic view showing the distribution state of each mode in the molding step 2 of the present invention;

Figure 5 is a schematic view showing the distribution state of each mode in the molding step 3 of the present invention;

Figure 6 is a schematic view showing the distribution state of each mode in the molding step 4 of the present invention;

Fig. 7 is a schematic view showing the distribution state of each mode in the molding step 5 of the present invention.

Description of the figure:

10, the rack 11, cooling holes

12, workbench 13, support frame

14, the drive device 15, mobile space

16, automatic gates 17, hopper

20, silicone molding upper mold A 30, silicone molding upper mold B

40, plastic molding upper mold 50, shared lower mold A

60, shared lower mold B 70, moving mechanism

detailed description

The invention is shown in FIG. 1 to FIG. 7 , a molding device and a molding method for a silicone plastic composite part, comprising a frame 10 and a silicone molding die A 20. A silicone molding upper mold B 30, a plastic molding upper mold 40, a shared lower mold A 50, a shared lower mold B 60, and a moving mechanism 70 that drives the common lower molds A and B to move back and forth, wherein:

A plurality of heat dissipation holes 11 for ventilation and heat dissipation of the device are disposed around the frame 10. The upper surface of the frame 10 is provided with a work table 12, and three sets of support frames 13 are arranged side by side on the work table 12, and the above-mentioned silicone molding die A and B are mounted on the support frames 13 on both sides, and the plastic molding upper mold 40 is mounted on the intermediate support frame 13. Above each support frame 13, a driving device 14 is provided, and the silicone molding upper molds A, B and plastic molding are respectively arranged. The upper molds 40 are respectively connected to the corresponding driving devices 14; under the three sets of support frames 13, a moving space 15 for reciprocating movement of the common lower molds A, B is formed, and the moving mechanism 70 is disposed at the bottom of the moving space 15, sharing the lower mold A, B is mounted on the moving mechanism 70, and the common lower molds A and B are reciprocally movable in the moving space 15 under the movement of the moving mechanism 70; and an automatic gate grill 16 is respectively disposed at two ends of the moving space 15 in the middle. A hopper 17 for feeding the plastic molding upper mold 40 is provided on the support frame 13.

The molding principle of the silicone plastic composite is as follows: the silicone button is formed by combining plastic and silicone materials, the plastic (PC) is injection molded (shot), the liquid silicone (LSR) is injection molded by Insert-Molding, and the PC injection molding cycle is about LSR. Half of the injection molding cycle, using a set of plastic molds to match two sets of silicone molds, PC and LSR use two common lower molds, shifting operations.

The molding method of the silicone plastic composite part is as follows:

S1, the common lower mold A 50 is located below the plastic molding upper mold 40, and the common lower mold B 60 is located on the silicone molding upper mold B. 30, the plastic molding upper mold 40 performs an injection molding operation on the common lower mold A 50. After the injection molding is completed, the common lower mold A 50 and the common lower mold B 60 move to the left together;

After the S2, the shared lower mold A 50 and the common lower mold B 60 are moved to the left, the common lower mold A 50 is located below the silicone molding upper mold A 20, and the lower mold B is shared. 60 is located under the plastic molding upper mold 40, and the silicone molding upper mold A 20 performs silicone injection molding on the common lower mold A 50; meanwhile, the plastic molding upper mold 40 pairs the common lower mold B. 60 injection molding operation, when the injection molding is completed, the common lower mold A 50 silica gel injection molding is completed half;

S3, the common lower mold B 60 moves to the right, and the common lower mold B 60 is located under the silicone molding upper mold B 30, and the silicone molding upper mold B 30 pairs of the common lower mold B 60 are subjected to silicone injection molding, and the common lower mold A 50 is kept stationary, and the injection molding is continued;

After the injection molding of S4 and the shared lower mold A 50 silica gel is completed, the finished product is taken out. At this time, the common lower mold B 60 silica gel is injection-molded and finished half, and the lower mold B is shared. 60 remains stationary, the shared lower mold A 50 moves to the right below the plastic molding upper mold 40, and the injection molding is resumed. When the injection molding is completed, the common lower mold B 60 is also injection molded, and the finished product is taken out;

S5, the common lower mold A 50 and the common lower mold B 60 are moved to the left together, and the common lower mold A 50 is located on the silicone molding upper mold A. Under 20, the silicone molding upper mold A 20 performs silicone injection molding on the common lower mold A 50 , and the common lower mold B 60 is located under the plastic molding upper mold 40, and the plastic molding upper mold 40 pairs the common lower mold B. 60 is injection-molded, and then the above S2 is repeated and sequentially circulated.

In this way, the LSR molding time is approximately twice the PC molding time, and the intermediate PC can supply two for the Insert-Molding injection molding of the left and right LSRs.

The design of the present invention is focused on the use of a moving mechanism to drive the common lower molds A, B to reciprocate to cooperate with the silicone molding upper molds A, B and the plastic molding upper mold, thereby forming a plastic molding time of about two in the silicone molding time. Under the condition of multiple times, make full use of time, mold shifting, interlocking production, no manual pick and place, while improving the utilization rate of the mold, it also improves the production efficiency (up 50%), and the molding method does not need to be pre-empted. The material is matched with the gap to overcome the risk of spilling glue and ensure the flatness of the product.

The above is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are Still falling within the scope of the technical solution of the present invention.

Claims

A silicone plastic composite molding device characterized by comprising: a silicone molding upper mold A, a silicone molding upper mold B, a plastic molding upper mold, a shared lower mold A, a shared lower mold B, and a common common lower mold A, B. The moving moving mechanism, the silicone molding upper mold A, the silicone molding upper mold B, the plastic molding upper mold are arranged side by side, and the plastic molding upper mold is located between the silicone molding upper mold A and the silicone molding upper mold B, the common lower mold A And B are connected with the moving mechanism, and the common lower molds A and B are reciprocally movable under the movement mechanism to be located under the silicone molding upper mold A, the silicone molding upper mold B and the plastic molding upper mold.
The molding apparatus for a silicone plastic composite part according to claim 1, further comprising a frame on which a work table is disposed, and three sets of support frames are arranged side by side on the work table, and the silicone molding is performed on the same. The molds A and B are mounted on the support frames on both sides, and the plastic molding upper mold is mounted on the intermediate support frame. A drive device is respectively arranged above each support frame, and the silicone molding upper molds A and B and the plastic molding upper mold are respectively Corresponding to the driving device, a moving space for reciprocating movement of the common lower molds A and B is formed under the three sets of support frames. The moving mechanism is disposed at the bottom of the moving space, and the common lower molds A and B are mounted above the moving mechanism.
The silicone plastic composite molding apparatus according to claim 2, wherein an automatic gate grid is disposed at both ends of the moving space.
The silicone plastic composite molding apparatus according to claim 2, wherein the intermediate support frame is provided with a hopper for feeding the plastic molding upper mold.
The silicone plastic composite molding device according to claim 2, wherein a plurality of heat dissipation holes for ventilation and ventilation of the device are disposed around the frame.
A molding method for a silicone plastic composite member, characterized in that the silicone plastic composite molding device according to any one of claims 1 to 5 comprises the following steps:

S1, the common lower mold A is located under the plastic molding upper mold, the common lower mold B is located under the silicone molding upper mold B, and the plastic molding upper mold performs the injection molding operation on the common lower mold A. After the injection molding is completed, the common lower mold A and the common one are shared. Mode B moves to the left together;

After S2, the shared lower mold A and the common lower mold B are moved to the left, the common lower mold A is located below the silicone molding upper mold A, the common lower mold B is located below the plastic molding upper mold, and the silicone molding upper mold A performs the common lower mold A. Silica gel injection molding; at the same time, the plastic molding upper mold performs the injection molding operation on the common lower mold B, and when the injection molding is completed, the common lower mold A silica gel injection molding is completed half;

S3, the common lower mold B moves to the right, the common lower mold B is located under the silicone molding upper mold B, and the silicone molding upper mold B performs the silicone injection molding on the common lower mold B, and the common lower mold A remains stationary, and continues to be injection molded;

After the injection molding of the common lower mold A silica gel is completed, the finished product is taken out. At this time, the common lower mold B silica gel is injection-molded and finished half, the common lower mold B is kept still, and the common lower mold A is moved to the right to the lower side of the plastic molding upper mold. The injection molding is resumed. When the injection molding is completed, the common lower mold B is also injection molded, and the finished product is taken out;

S5, the common lower mold A and the common lower mold B move to the left together, the common lower mold A is located under the silicone molding upper mold A, the silicone molding upper mold A performs the silicone injection molding on the common lower mold A, and the common lower mold B is located in the plastic molding. Below the upper mold, the plastic molding upper mold performs injection molding on the common lower mold B, and then repeats the above S2, and sequentially circulates.