A multi-layer composite anti-slip plastic chair injection molding device

Abstract

The utility model relates to the field of plastic stool production, especially a kind of multilayer composite antiskid plastic stool injection molding device, including lower mould, further including upper mould, the upper end fixed mounting of upper mould has connecting sleeve seat, the upper end fixed mounting of upper mould is located in the side of connecting sleeve seat and is installed by annular preheating module one, the lower end fixed mounting of annular preheating module one has heating rod one, the upper end of upper mould is located in the side of annular preheating module one and is provided with exhaust groove and feeding port, the lower end of lower mould is provided with mould bottom plate, the lower end of lower mould is located in the side of mould bottom plate and is fixedly installed with U-shaped support;The utility model carries out the preheating work of mould by annular preheating module one and annular preheating module two, reduces the temperature difference between mould and processing raw material, further effectively reduces the air bubble generated by excessive temperature difference, simultaneously cooperates multiple exhaust groove and discharges air, avoids the situation that mould cavity is kept air, is favorable for improving the production quality of multilayer composite antiskid plastic stool.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic stool production, especially to a multilayer composite antiskid plastic stool injection molding device. BACKGROUND

[0002] The multilayer composite antiskid plastic stool is made of high-quality thickened plastic, which has excellent durability and very strong load-bearing capacity after strict testing, and can meet the daily use needs of adults. The bottom of the stool is designed with antiskid pads to effectively prevent the stool from sliding and ensure safety. The plastic stool injection molding is a manufacturing process that melts plastic particles and injects them into a mold to obtain the desired shape after cooling and solidification.

[0003] For example, patent number (CN211164950U) discloses a plastic stool production device, which includes a mold base moving block, a left mold base movably installed on the right side of the mold base moving block, a fixed head fixedly welded on the top of the left mold base, a clamping seat provided on the bottom of the mold base moving block, and a sliding seat provided on the top of the mold base moving block. The plastic stool production device changes the traditional four-point screw fixing method to a two-point clamping and one-point fixing method. This method has the advantage of only needing to fix one point to fix the entire mold. This saves a lot of time during installation and disassembly, thereby saving production time and greatly improving production efficiency. The traditional fixing method is to fix the mold at four corners by fixing screws, which is a cumbersome process and not conducive to installation and disassembly. Therefore, the plastic stool production device has greater advantages.

[0004] Currently, the multilayer composite antiskid plastic stool injection molding device has certain limitations in injection molding production. During the plastic stool injection molding process, air is easily trapped inside the mold, and the temperature of the mold is not controlled well, which can cause a large temperature difference between the raw materials and the mold, resulting in bubbles and further affecting the production quality of the multilayer composite antiskid plastic stool.

[0005] Therefore, to address the above problems, a multilayer composite antiskid plastic stool injection molding device with a preheating structure and an exhaust structure can be designed. SUMMARY

[0006] To overcome the problem of air being easily trapped inside the mold during the plastic stool injection molding process, and the temperature of the mold not being controlled well, which can cause a large temperature difference between the raw materials and the mold, resulting in bubbles and further affecting the production quality of the multilayer composite antiskid plastic stool.

[0007] The utility model discloses a technical scheme for a multi-layer composite anti-skid plastic stool injection molding device, which comprises a lower mold and an upper mold.

[0008] Preferably, the upper mold can be installed on the driving output structure of the equipment through the connecting sleeve, the lower mold can be installed on the base workbench of the equipment through the connecting frame, the upper mold and the lower mold can be driven by the equipment for injection molding production, the annular preheating module one and the annular preheating module two can heat the heating rod one and the heating rod two, the upper mold and the lower mold can form a mold cavity when they are combined, the feeding port can add multi-layer composite anti-skid plastic stool injection molding raw materials, the exhaust groove can exhaust air, the cooling inlet and the cooling outlet can connect the cooling module and the cooling cavity, and the driving module can be a telescopic cylinder or other driving element to lift the mold base plate.

[0009] Preferably, the lower mold and the upper mold are clamped and connected, a mold cavity is formed when the lower mold and the upper mold are combined, and the exhaust groove and the feeding port are connected to the mold cavity, so that injection molding can be performed.

[0010] Preferably, the connecting sleeve is used to connect the driving output structure of the injection molding device, the side of the lower end of the lower mold is fixedly installed with a connecting frame, and the connecting frame is used to connect the base structure of the injection molding device.

[0011] Preferably, the lower end of the heating rod one extends to the inside of the upper mold and is internally provided with heating wires, and the upper end of the heating rod two extends to the inside of the lower mold and is internally provided with the same heating wires.

[0012] Preferably, the surface of the feeding port is provided with a connecting thread, the feeding port is detachably connected to a feeding hose, and the exhaust groove is used to exhaust excess air when the feeding port is feeding.

[0013] Preferably, the mold base plate is adapted to the lower mold, the output end of the driving module extends to the inside of the U-shaped frame and is fixedly connected to the mold base plate, the output end of the driving module is slidingly connected to the U-shaped frame, and the driving module is used to lift the mold base plate.

[0014] Preferably, the upper side of the front end of the upper mold is provided with a cooling inlet, and the lower side of the front end of the upper mold is provided with a cooling outlet.

[0015] The beneficial effects of this utility model are:

[0016] 1. The injection molding device for the multi-layer composite anti-slip plastic stool uses two ring preheating modules to preheat the mold, which helps to reduce the temperature difference between the mold and the raw material. This further reduces the bubbles caused by excessive temperature difference. At the same time, the device uses multiple air vents to expel air, which prevents the mold cavity from being filled with air and improves the production quality of the multi-layer composite anti-slip plastic stool.

[0017] 2. This multi-layer composite anti-slip plastic stool injection molding device uses a drive module to lift the mold base plate, which in turn pushes the plastic stool that is attached to the inner wall of the lower mold to be formed. After the plastic stool is peeled off, it is slightly ejected, realizing the automatic demolding function of the injection molding device. This is beneficial to improving the convenience of material unloading of the multi-layer composite anti-slip plastic stool injection molding device. Attached Figure Description

[0018] Figure 1 The diagram shown is a schematic representation of the overall structure of the injection molding device for the multi-layer composite anti-slip plastic stool of this utility model.

[0019] Figure 2 The diagram shown is a schematic representation of the exhaust channel structure of the injection molding device for the multi-layer composite anti-slip plastic stool of this utility model.

[0020] Figure 3 The diagram shown is a schematic representation of the heating rod structure of the injection molding device for the multi-layer composite anti-slip plastic stool of this utility model.

[0021] Figure 4 The diagram shown is a schematic representation of the heating rod structure of the injection molding device for the multi-layer composite anti-slip plastic stool of this utility model.

[0022] Figure 5 The diagram shown illustrates the structure of the mold base plate of the injection molding device for the multi-layer composite anti-slip plastic stool of this utility model. Figure 1 ;

[0023] Figure 6 The diagram shown illustrates the structure of the mold base plate of the injection molding device for the multi-layer composite anti-slip plastic stool of this utility model. Figure 2 .

[0024] Explanation of reference numerals in the attached drawings: 1. Lower mold; 2. Upper mold; 3. Connecting sleeve; 4. Annular preheating module one; 5. Heating rod one; 6. Exhaust groove; 7. Feed port; 8. Mold base plate; 9. U-shaped frame; 10. Drive module; 11. Annular preheating module two; 12. Heating rod two; 13. Connecting frame; 14. Cooling liquid inlet; 15. Cooling liquid outlet. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Please see Figures 1-6 This utility model provides an embodiment: a multi-layer composite anti-slip plastic stool injection molding device, including a lower mold 1 and an upper mold 2. A connecting sleeve 3 is fixedly installed on the upper end of the upper mold 2. An annular preheating module 4 is fixedly installed on the side of the connecting sleeve 3 on the upper end of the upper mold 2. A heating rod 5 is fixedly installed on the lower end of the annular preheating module 4. An exhaust groove 6 and a feeding port 7 are provided on the side of the annular preheating module 4 on the upper end of the upper mold 2. A mold base plate 8 is provided on the lower end of the lower mold 1. A U-shaped frame 9 is fixedly installed on the side of the mold base plate 8 on the lower end of the lower mold 1. A drive module 10 is fixedly installed on the lower end of the U-shaped frame 9. The lower end of the tool 1 is fixedly installed with an annular preheating module 2 11 on the side of the U-shaped frame 9. The upper end of the annular preheating module 2 11 is fixedly installed with a heating rod 2 12. The annular preheating module 1 4 and the annular preheating module 2 11 are used to preheat the upper mold 2 and the lower mold 1 respectively, so as to avoid a large temperature difference between the raw material and the mold and reduce the generation of bubbles. When the lower mold 1 and the upper mold 2 are closed to form a mold cavity, the multi-layer composite anti-slip plastic stool injection raw material is added through the feeding port 7, and the air is discharged through the venting groove 6. After the upper mold 2 is raised, the driving module 10 drives the mold base plate 8 to lift up, so that the plastic stool is peeled off the inner surface of the lower mold 1 by the mold base plate 8.

[0027] Please see Figures 1-4 In this embodiment, the lower mold 1 and the upper mold 2 are engaged and connected. When the lower mold 1 and the upper mold 2 are closed, a mold cavity is formed. The venting groove 6 and the loading port 7 are both connected to the mold cavity, allowing for injection molding. The connecting sleeve 3 is used to connect with the drive output structure of the injection molding device. A connecting frame 13 is fixedly installed on the lower side of the lower mold 1. The connecting frame 13 is used to connect with the base structure of the injection molding device. The lower end of the heating rod 15 extends to the inner side of the upper mold 2 and is equipped with a heating wire. The upper end of the heating rod 212 extends to the inner side of the lower mold 1 and is equipped with the same heating wire. The loading port 7... The surface is provided with connecting threads. The feeding port 7 is used for detachable connection with the conveying hose. When feeding is made at the feeding port 7, the venting groove 6 is used to cooperate with the feeding port 7 to discharge excess air. Through the operation of the annular preheating module 1 4 and the annular preheating module 2 11 (the annular preheating module 1 4 and the annular preheating module 2 11 are synchronously controlled by the terminal system), the heating rod 1 5 and the heating rod 2 12 are heated to preheat the upper mold 2 and the lower mold 1 respectively. When the lower mold 1 and the upper mold 2 are closed to form a mold cavity, the multi-layer composite anti-slip plastic injection material is added at the feeding port 7, and the air is discharged at the venting groove 6.

[0028] Please see Figure 5 and Figure 6In this embodiment, the mold base plate 8 and the lower mold 1 are adapted to each other. The output end of the drive module 10 extends to the inner side of the U-shaped frame 9 and is fixedly connected to the mold base plate 8. The output end of the drive module 10 is slidably connected to the U-shaped frame 9. The drive module 10 is used to lift the mold base plate 8. A cooling liquid inlet 14 is provided on the upper side of the front end of the upper mold 2, and a cooling liquid outlet 15 is provided on the lower side of the front end of the upper mold 2. Through the operation of the annular preheating module 1 4 and the annular preheating module 2 11, the heating rod 1 5 and the heating rod 2 12 are heated to preheat the upper mold 2 and the lower mold 1 respectively, so as to avoid a large temperature difference between the raw material and the mold, and the formation of a mold cavity when the lower mold 1 and the upper mold 2 are closed. At that time, the injection material is added to the multi-layer composite anti-slip plastic stool through the feeding port 7, and the air is discharged through the venting groove 6. The cooling module and cooling chamber are connected through the cooling liquid inlet interface 14 and the cooling liquid outlet interface 15 to cool and reduce the temperature of the mold (the cooling structure and the preheating mechanism work in separate time, and the cooling structure and the preheating mechanism are alternately distributed and will not interfere with each other), which facilitates the rapid cooling and molding of the plastic stool. After the upper mold 2 is raised, the driving module 10 drives the mold base plate 8 to lift up (the driving module 10 can be set as a driving component such as a driving cylinder), so that the plastic stool is peeled off the inner surface of the lower mold 1 by the mold base plate 8 and slightly pushed out of the lower mold 1, realizing the automatic demolding function of the injection molding device.

[0029] During operation, the ring preheating module 11 and the ring preheating module 21 work to heat the heating rods 15 and 212, respectively, to preheat the upper mold 2 and the lower mold 1. When the lower mold 1 and the upper mold 2 are closed to form a mold cavity, the multi-layer composite anti-slip plastic material is added through the feeding port 7, and air is discharged through the venting groove 6. The cooling module and the cooling cavity are connected through the cooling liquid inlet port 14 and the cooling liquid outlet port 15 to cool and reduce the temperature of the mold, so that the plastic material can be quickly cooled and formed. After the upper mold 2 is raised, the driving module 10 drives the mold base plate 8 to lift up, so that the plastic material is peeled off the inner surface of the lower mold 1 by the mold base plate 8, and slightly pushed out of the lower mold 1, realizing the automatic demolding function of the injection molding device.

[0030] Through the above steps, the annular preheating module 14 and the annular preheating module 21 preheat the upper mold 2 and the lower mold 1 respectively, avoiding a large temperature difference between the raw material and the mold and reducing the generation of air bubbles. When the lower mold 1 and the upper mold 2 are closed to form a mold cavity, the multi-layer composite anti-slip plastic injection material is added through the feeding port 7, and air is discharged through the venting groove 6. This solves the problem that air is easy to appear inside the mold during the injection molding of plastic stools. At the same time, insufficient control of the mold temperature and the temperature difference between the raw material and the mold may also generate air bubbles, affecting the production quality of multi-layer composite anti-slip plastic stools.

Claims

1. A multi-layer composite anti-slip plastic stool injection molding device, comprising a lower mold (1), characterized in that: It also includes an upper mold (2), a connecting sleeve (3) is fixedly installed at the upper end of the upper mold (2), an annular preheating module (4) is fixedly installed at the side of the connecting sleeve (3) at the upper end of the upper mold (2), a heating rod (5) is fixedly installed at the lower end of the annular preheating module (4), an exhaust groove (6) and a feeding port (7) are provided at the upper end of the upper mold (2) at the side of the annular preheating module (4), a mold base plate (8) is provided at the lower end of the lower mold (1), a U-shaped frame (9) is fixedly installed at the lower end of the lower mold (1) at the side of the mold base plate (8), a drive module (10) is fixedly installed at the lower end of the U-shaped frame (9), an annular preheating module (11) is fixedly installed at the lower end of the lower mold (1) at the side of the U-shaped frame (9), and a heating rod (12) is fixedly installed at the upper end of the annular preheating module (11).

2. The injection molding device for a multi-layer composite anti-slip plastic stool according to claim 1, characterized in that: The lower mold (1) and the upper mold (2) are engaged and connected. When the lower mold (1) and the upper mold (2) are closed, a mold cavity is formed. The venting groove (6) and the feeding port (7) are connected to the mold cavity. The multi-layer composite anti-slip plastic injection molding raw material can enter the mold cavity through the feeding port (7).

3. The injection molding device for a multi-layer composite anti-slip plastic stool according to claim 2, characterized in that: The connecting sleeve (3) is used to connect with the drive output structure of the injection molding device. The lower mold (1) has a connecting frame (13) fixedly installed on the side of the lower end. The connecting frame (13) is used to connect with the base structure of the injection molding device.

4. The injection molding device for a multi-layer composite anti-slip plastic stool according to claim 3, characterized in that: The lower end of heating rod 1 (5) extends to the inner side of the upper mold (2) and is provided with heating wires inside. The upper end of heating rod 2 (12) extends to the inner side of the lower mold (1) and is provided with the same heating wires inside.

5. The injection molding device for a multi-layer composite anti-slip plastic stool according to claim 1, characterized in that: The surface of the feeding port (7) is provided with connecting threads. The feeding port (7) is used to detachably connect with the conveying hose. When the feeding port (7) feeds material, the exhaust groove (6) is used to cooperate with the feeding port (7) to discharge excess air.

6. The injection molding device for a multi-layer composite anti-slip plastic stool according to claim 1, characterized in that: The mold base plate (8) and the lower mold (1) are adapted to each other. The output end of the drive module (10) extends to the inside of the U-shaped frame (9) and is fixedly connected to the mold base plate (8). The output end of the drive module (10) is slidably connected to the U-shaped frame (9). The drive module (10) is used to lift the mold base plate (8).

7. The injection molding device for a multi-layer composite anti-slip plastic stool according to claim 1, characterized in that: A cooling liquid inlet (14) is provided on the upper side of the front end of the upper mold (2), and a cooling liquid outlet (15) is provided on the lower side of the front end of the upper mold (2).

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