Forming mold for producing plastic water cup

Abstract

The utility model provides a forming mold for producing a plastic water cup, which comprises a movable mold plate, a fixed mold seat, a mold seat supporting bottom plate, a sprue seat, a hot runner sprue and a T-shaped hot runner pipe, a water leakage cover plate connected with the two water cup forming mold blanks is installed on the top of an inner cavity of the fixed mold base, a liquid discharging base is arranged in the middle of the inner cavity of the fixed mold base, a liquid guiding opening communicated with the inner cavity of the fixed mold base is formed in the side portion of the liquid discharging base, and a water inlet connecting base is installed on the side portion of the fixed mold base. Water leaks out of the water leakage cover plate to flow into the inner cavity of the fixed mold base, local parts of the T-shaped hot runner pipes are cooled, meanwhile, the outer walls of the two water cup forming mold blanks are surrounded by water, the good cooling effect can be achieved, the cooling time is greatly shortened, the situation that the raw material solidification time is prolonged due to the too high temperature is avoided, and the water cup forming quality is improved. Meanwhile, cracks on the surface of the product are also avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of molding dies and relates to a molding die for producing plastic water cups. Background Technique

[0002] An injection molding die is a tool for producing plastic products and is also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some complex-shaped parts. Specifically, it means injecting the heat-melted plastic into the mold cavity at high pressure by an injection molding machine. After cooling and solidifying, a formed product is obtained. In the production process of plastic water cups, a molding die is required. The prior art such as CN202021896455.3 discloses a high-temperature injection molding die for double-layer wall-thickness plastic water cups, belonging to the technical field of die manufacturing. It solves the problem of difficult demolding of the existing double-layer wall-thickness plastic water cup molding die. This high-temperature injection molding die for double-layer wall-thickness plastic water cups includes a moving die and a fixed die. A convex molding block facing the moving die is arranged at the center of the fixed die. A push block that can move away from or close to the molding block is arranged at the upper end of the molding block. A receiving groove for receiving the push block and the molding block is formed on the moving die. A molding cavity for forming the water cup is formed between the receiving groove, the push block, and the molding block. An injection port communicating with the molding cavity is arranged on the moving die. It has the advantage of good demolding effect.

[0003] The disadvantage of the above-mentioned disclosed molding die in actual use is that when cooling and forming, due to the self-closed nature of the die, the solidification time of the molten raw material is long, and the high temperature in the hot pouring runner causes a significant increase in the cooling time. Therefore, we design a molding die for producing plastic water cups. Summary of the Invention

[0004] The purpose of the utility model is to provide a molding die for producing plastic water cups to solve the problems raised in the above background technique.

[0005] The object of the present utility model can be achieved by the following technical solutions: A forming mold for the production of plastic water cups, comprising a movable mold plate, a fixed mold base, a mold base support bottom plate, a gate seat, a hot runner gate and a T-shaped hot runner tube. The bottom end of the fixed mold base is bolted and fastened to the mold base support bottom plate, and the fixed mold base is connected to the movable mold plate in a mold closing manner. Two water cup forming mold embryos are installed inside the fixed mold base. Water cup core inserts are arranged inside both of the two water cup forming mold embryos. Two mold embryo sealing plates are arranged at the bottom end of the movable mold plate. The movable mold plate is connected to the two water cup forming mold embryos respectively through the two mold embryo sealing plates. A water leakage cover plate connected to the two water cup forming mold embryos is installed at the top of the inner cavity of the fixed mold base. A liquid discharge seat is arranged in the middle of the inner cavity of the fixed mold base. A liquid guide port communicating with the inner cavity of the fixed mold base is arranged on the side of the liquid discharge seat. An inlet connection seat is installed on the side of the fixed mold base, and the inlet connection seat communicates with the inner cavity of the fixed mold base.

[0006] In the above-mentioned forming mold for the production of plastic water cups, a lifting cylinder is installed on the side of the mold base support bottom plate. A limit seat is installed at the output end of the lifting cylinder. A slide rail bar is arranged at the top end of the limit seat. A sliding groove is arranged inside the slide rail bar. A sliding connection block is installed on the side of the top end of the movable mold plate. The sliding connection block is slidably connected to the sliding groove inside the slide rail bar. A pushing handle is installed at the side edge of the top end of the movable mold plate. The pushing handle pushes the movable mold plate to slide along the slide rail bar. The purpose of such a setting is to connect the lifting cylinder to the air source and turn on the power supply. The lifting cylinder is used to quickly lift the movable mold plate, so that the movable mold plate is separated from the fixed mold base to realize the mold opening operation. Then, the pushing handle is used to push the movable mold plate to slide along the slide rail bar, so that the inner cavity of the fixed mold base is exposed, which is convenient for taking out structures such as the water cup forming mold embryo and the water leakage cover plate, and is convenient for better demolding operation.

[0007] In the above-mentioned forming mold for the production of plastic water cups, the top end hole of the movable mold plate is connected to the gate seat. The hot runner gate is installed inside the gate seat through bolts, and the tail end of the hot runner gate is connected to the T-shaped hot runner tube. Insertion heads are arranged at both ends of the T-shaped hot runner tube. A nozzle communicating with the T-shaped hot runner tube is arranged at one end of the insertion head. The purpose of such a setting is to conveniently pour the molten raw material into the T-shaped hot runner tube through the hot runner gate, divert it to the nozzle through the guiding operation of the T-shaped hot runner tube, and enter the inside of the water cup forming mold embryo through the nozzle to contact the water cup core insert to form a water cup embryo body.

[0008] In the above-mentioned forming mold for producing plastic water cups, puncture sealing rubber plugs are embedded and installed at the tops of the side walls of the two water cup forming die blanks. The insertion head is connected to the corresponding puncture sealing rubber plug, so that each nozzle is communicated with the corresponding water cup forming die blank. The purpose of such a setting is to ensure good connection sealing performance when the side wall of the water cup forming die blank is connected to the nozzle, and to avoid surface defects of the product caused by too large gaps during the pouring process.

[0009] In the above-mentioned forming mold for producing plastic water cups, the vertical pipe of the T-shaped hot runner pipe passes through the water leakage cover plate, and both insertion heads are located below the water leakage cover plate. The purpose of such a setting is to facilitate better positioning of the T-shaped hot runner pipe, so that the T-shaped hot runner pipe has good stability during the pouring process, to avoid unstable phenomena caused by the flow of molten raw materials. At the same time, the water flowing out through the water leakage cover plate can cool the local part of the T-shaped hot runner pipe, preventing the raw materials from solidifying for an increased time due to excessive temperature.

[0010] Compared with the prior art, the advantages of the forming mold for producing plastic water cups of the present utility model are as follows: by installing a water leakage cover plate connected to the two water cup forming die blanks at the top of the inner cavity of the fixed mold base, a liquid discharge seat is arranged in the middle of the inner cavity of the fixed mold base, a liquid guide port communicating with the inner cavity of the fixed mold base is arranged on the side of the liquid discharge seat, a water inlet connecting seat is installed on the side of the fixed mold base, the water inlet connecting seat is connected to a water source and injects water above the water leakage cover plate. The water flows out through the water leakage cover plate into the inner cavity of the fixed mold base to cool the local part of the T-shaped hot runner pipe. At the same time, the outer walls of the two water cup forming die blanks are surrounded by water, which can achieve a good cooling effect, greatly shortening the cooling time, preventing the raw materials from solidifying for an increased time due to excessive temperature, and also avoiding cracks on the surface of the product;

[0011] By installing a lifting cylinder on the side of the mold base support bottom plate, a limit seat is installed at the output end of the lifting cylinder, a slide rail bar is arranged at the top of the limit seat, a sliding groove is arranged inside the slide rail bar, and a sliding connection block is installed at the side of the top of the mold moving template. The sliding connection block is slidably connected to the sliding groove inside the slide rail bar; connect the lifting cylinder to the air source and turn on the power supply, use the lifting cylinder to quickly lift the mold moving template, so that the mold moving template is separated from the fixed mold base to realize the mold opening operation, and then push the mold moving template along the slide rail bar by pushing the handle, so that the inner cavity of the fixed mold base is exposed, which is convenient for taking out the water cup forming die blank, the water leakage cover plate and other structures, and is convenient for better demolding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structural schematic diagram of the forming mold for producing plastic water cups of the present utility model.

[0013] Figure 2 is an internal structural schematic diagram of the fixed mold base of the forming mold for producing plastic water cups of the present utility model.

[0014] Figure 3 is a forming mold for the production of the plastic water cup of the present utility model Figure 2 and is a partial structural schematic diagram thereof.

[0015] Figure 4 is a three-dimensional structural schematic diagram of the moving template of the forming mold for the production of the plastic water cup of the present utility model.

[0016] In the figure, 1 is the moving template of the mold; 2 is the fixed mold base; 3 is the supporting bottom plate of the mold base; 4 is the gate seat; 5 is the hot runner gate; 6 is the pushing handle; 7 is the slide rail bar; 8 is the sliding groove; 9 is the sliding connection block; 10 is the lifting cylinder; 11 is the limit seat; 12 is the water cup forming mold blank; 13 is the water cup core insert; 14 is the mold blank sealing plate; 15 is the T-shaped hot runner tube; 16 is the water leakage cover plate; 17 is the liquid discharge seat; 18 is the liquid guiding port; 19 is the water inlet connection seat; 20 is the inserted sealing head; 21 is the puncture sealing rubber plug; 22 is the nozzle. Specific embodiments

[0017] The following are specific embodiments of the present utility model and in conjunction with the accompanying drawings, the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0018] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the forming mold for the production of the plastic water cup of the present utility model;

[0019] The forming mold includes a moving template 1 of the mold, a fixed mold base 2, a supporting bottom plate 3 of the mold base, a gate seat 4, a hot runner gate 5 and a T-shaped hot runner tube 15. The bottom end of the fixed mold base 2 is bolted and fixedly connected to the supporting bottom plate 3 of the mold base, and the fixed mold base 2 is in a mold closing connection with the moving template 1 of the mold. Two water cup forming mold blanks 12 are installed inside the fixed mold base 2. Water cup core inserts 13 are arranged inside both of the two water cup forming mold blanks 12. Two mold blank sealing plates 14 are arranged at the bottom end of the moving template 1 of the mold. The moving template 1 of the mold is connected to the two water cup forming mold blanks 12 respectively through the two mold blank sealing plates 14.

[0020] Furthermore, the top hole of the moving template 1 of the mold is connected to the gate seat 4. The hot runner gate 5 is installed inside the gate seat 4 through bolts, and the tail end of the hot runner gate 5 is connected to the T-shaped hot runner tube 15. Inserted sealing heads 20 are arranged at both ends of the T-shaped hot runner tube 15. One end of the inserted sealing head 20 is provided with a nozzle 22 communicating with the T-shaped hot runner tube 15; Puncture sealing rubber plugs 21 are embedded and installed at the top of the side walls of the two water cup forming mold blanks 12. The inserted sealing head 20 is connected to the corresponding puncture sealing rubber plug 21 so that each nozzle 22 communicates with the corresponding water cup forming mold blank 12.

[0021] Example 1: At the top of the inner cavity of the fixed mold base 2, a water leakage cover plate 16 connected to two water cup forming mold embryos 12 is installed. In the middle of the inner cavity of the fixed mold base 2, a liquid discharge seat 17 is provided. At the side of the liquid discharge seat 17, a liquid guiding port 18 communicating with the inner cavity of the fixed mold base 2 is provided. At the side of the fixed mold base 2, a water inlet connection seat 19 is installed, and the water inlet connection seat 19 communicates with the inner cavity of the fixed mold base 2. Among them, in terms of structural arrangement, the vertical pipe of the T-shaped hot runner pipe 15 passes through the water leakage cover plate 16 and makes both inserted end caps 20 located below the water leakage cover plate 16.

[0022] Technical effect of this embodiment: Connect the water source through the water inlet connection seat 19 and inject water above the water leakage cover plate 16. The water leaks out through the water leakage cover plate 16 and flows into the inner cavity of the fixed mold base 2 to cool a part of the T-shaped hot runner pipe 15. At the same time, the outer walls of the two water cup forming mold embryos 12 are surrounded by water, which can achieve a good cooling effect, greatly shorten the cooling time, prevent the raw material solidification time from increasing due to excessive temperature, and avoid cracks on the product surface.

[0023] Example 2: At the side of the mold base support bottom plate 3, a lifting cylinder 10 is installed. At the output end of the lifting cylinder 10, a limit seat 11 is installed. At the top of the limit seat 11, a slide rail bar 7 is provided. Inside the slide rail bar 7, a sliding groove 8 is provided. At the side of the top of the moving mold plate 1, a sliding connection block 9 is installed, and the sliding connection block 9 is slidably connected to the sliding groove 8 inside the slide rail bar 7. At the side edge of the top of the moving mold plate 1, a pushing handle 6 is installed, and the pushing handle 6 pushes the moving mold plate 1 to slide along the slide rail bar 7.

[0024] Technical effect of this embodiment: Use the lifting cylinder 10 to quickly lift the moving mold plate 1, so that the moving mold plate 1 is separated from the fixed mold base 2 to realize the mold opening operation. Then, push the moving mold plate 1 to slide along the slide rail bar 7 through the pushing handle 6, so that the inner cavity of the fixed mold base 2 is exposed, which is convenient for taking out the water cup forming mold embryo 12, the water leakage cover plate 16 and other structures, and is convenient for better demolding operation.

[0025] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the present invention belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A forming mold for producing plastic water cups, comprising a moving mold plate (1), a fixed mold base (2), a mold base support bottom plate (3), a gate seat (4), a hot runner gate (5) and a T-shaped hot runner tube (15). The bottom end of the fixed mold base (2) is bolted and fixedly connected to the mold base support bottom plate (3), and the fixed mold base (2) is connected to the moving mold plate (1) in a mold closing manner. Two water cup forming mold embryos (12) are installed inside the fixed mold base (2). Water cup core inserts (13) are arranged inside both of the two water cup forming mold embryos (12). Two mold embryo sealing plates (14) are arranged at the bottom end of the moving mold plate (1). The moving mold plate (1) is connected to the two water cup forming mold embryos (12) respectively through the two mold embryo sealing plates (14). It is characterized in that, At the top of the inner cavity of the fixed mold base (2), a water leakage cover plate (16) connected to two water cup forming mold embryos (12) is installed. In the middle of the inner cavity of the fixed mold base (2), a liquid discharge seat (17) is arranged. A liquid guiding port (18) communicating with the inner cavity of the fixed mold base (2) is arranged on the side of the liquid discharge seat (17). An inlet connection seat (19) is installed on the side of the fixed mold base (2), and the inlet connection seat (19) communicates with the inner cavity of the fixed mold base (2).

2. The forming die for producing plastic water cups according to claim 1, characterized in that, A lifting cylinder (10) is installed on the side of the mold base support bottom plate (3). The output end of the lifting cylinder (10) is installed with a limit seat (11). A slide rail bar (7) is arranged at the top end of the limit seat (11). A sliding groove (8) is arranged inside the slide rail bar (7). A sliding connection block (9) is installed on the side of the top end of the moving mold plate (1), and the sliding connection block (9) is slidably connected with the sliding groove (8) inside the slide rail bar (7).

3. The molding die for producing plastic water cups according to claim 2, characterized in that, A pushing handle (6) is installed on the side of the top end of the moving mold plate (1), and the pushing handle (6) pushes the moving mold plate (1) to slide along the slide rail bar (7).

4. The molding die for producing a plastic water cup according to claim 1, characterized in that, The top end hole of the moving mold plate (1) is connected to a gate seat (4). The hot runner gate (5) is installed inside the gate seat (4) through bolts, and the tail end of the hot runner gate (5) is connected to a T-shaped hot runner tube (15). Insertion heads (20) are arranged at both ends of the T-shaped hot runner tube (15). A nozzle (22) communicating with the T-shaped hot runner tube (15) is arranged at one end of the insertion head (20).

5. The molding die for producing plastic water cups according to claim 4, characterized in that, Puncture sealing rubber plugs (21) are embedded and installed at the top of the side walls of the two water cup forming mold embryos (12). The insertion head (20) is connected to the corresponding puncture sealing rubber plug (21) so that each nozzle (22) communicates with the corresponding water cup forming mold embryo (12).

6. The forming mold for producing plastic water cups according to claim 4, characterized in that, The vertical tube of the T-shaped hot runner tube (15) passes through the water leakage cover plate (16) so that both insertion heads (20) are located below the water leakage cover plate (16).

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