Molding device for soft rubber layer of armrest

Abstract

The utility model relates to the technical field of handrail soft rubber layer production, in particular to a forming device of a handrail soft rubber layer, which can improve the forming precision, improve the forming efficiency, simplify the mold structure and reduce the cost. Comprising a lower die frame used for bearing forming parts installed on a lower die; the upper die frame is used for bearing and installing all forming parts of the upper die; wherein the lower mold frame comprises mold feet used for supporting the whole mold and fixing the lower mold on an injection molding machine when the mold is put on a machine; the four lower mold cores are arranged on the forming end face of the lower mold frame; the runner is arranged on the lower mold frame, and the runner is used for communicating the four lower mold cores and conveying molten raw materials; the two sliding blocks are symmetrically arranged on the lower mold frame in a sliding mode and used for assisting in forming of the handrail soft rubber layer, and two inclined guide holes are formed in each sliding block; the upper mold frame comprises four upper mold cores, and the four upper mold cores are arranged on the forming end face of the upper mold frame.

Description

Technical Field

[0001] This utility model relates to the technical field of handrail soft rubber layer production, and in particular to a molding device for handrail soft rubber layer. Background Technology

[0002] In modern industrial production and daily life, handrails are widely used in furniture, transportation, medical equipment, and many other fields. The soft rubber layer on the surface of the handrail not only improves grip comfort but also provides important functions such as anti-slip, wear resistance, and cushioning, greatly enhancing the practicality and safety of the handrail. As the market's requirements for the quality and performance of handrails continue to increase, how to efficiently and precisely mold the soft rubber layer of handrails has become a focus of industry attention.

[0003] Traditional handrail soft rubber layer molding devices often suffer from problems such as unreasonable structural design, low molding efficiency, and difficulty in guaranteeing molding quality. In some devices, the flow channel layout is unreasonable, leading to poor flow and uneven filling of the molten material during transportation, affecting the molding accuracy and surface quality of the soft rubber layer. Furthermore, the complex mold structure increases equipment maintenance costs and operational difficulty, reducing the economic benefits for enterprises. Therefore, there is an urgent need for a handrail soft rubber layer molding device with optimized structure and reliable performance. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a molding device for the soft rubber layer of handrails that can improve molding accuracy, increase molding efficiency, simplify mold structure, and reduce costs.

[0005] This utility model discloses a molding device for a soft rubber layer on an armrest, comprising:

[0006] The lower mold frame is used to support and support the various molding components mounted on the lower mold.

[0007] The upper mold frame is used to support the various molding components on which the upper mold is installed;

[0008] The lower mold frame includes:

[0009] Mold feet are used to support the entire mold and to fix the lower mold onto the injection molding machine when the mold is installed.

[0010] Four lower cores are provided on the forming end face of the lower mold frame;

[0011] The lower mold frame is provided with flow channels, which are used to connect the four lower cores and to transport molten raw materials.

[0012] Two sliders are symmetrically slidably mounted on the lower mold frame to assist in the molding of the soft rubber layer of the handrail. Each slider has two oblique guide holes.

[0013] The upper mold frame includes:

[0014] Four upper cores are provided on the forming end face of the upper mold frame. The four upper cores and four lower cores correspond to each other to form four forming cavities for the soft rubber layer of the handrail.

[0015] Four inclined guide pillars are fixedly installed on the upper mold frame. The four inclined guide pillars correspond one-to-one with four inclined guide holes. The inclined guide pillars are slidably inserted into the inclined guide holes.

[0016] The gating system has a vertical gating system in the middle of the upper mold frame. The gating system is connected to the runner and is used to introduce molten raw materials into the injection molding machine.

[0017] This utility model discloses a molding device for a soft rubber layer of a handrail. The upper mold frame is internally connected with a cooling water channel, which is located close to the upper core and is used to cool and mold the soft rubber layer of the handrail formed on the upper core. The cooling water channel is provided with an inlet and an outlet.

[0018] This utility model discloses a molding device for a soft rubber layer on a handrail. The inlet and outlet of the cooling water circuit are threaded with quick-connect fittings, and both quick-connect fittings are connected to a water supply hose, which is connected to an external cooling water tank.

[0019] This utility model discloses a forming device for a soft rubber layer on a handrail. The water supply hose at the cooling water inlet is a blue hose, as blue is a cool color and represents cold water. The water supply hose at the cooling water outlet is a red hose, as red is a warm color and represents hot water.

[0020] This utility model discloses a molding device for a soft rubber layer of a handrail. Two wedge blocks are symmetrically fixed on the upper mold frame. The inner sidewall of the wedge block is set as an inclined surface, and the outer sidewall of the slider is set as an inclined surface. When the upper mold frame and the lower mold frame are closed, the inner sidewall of the wedge block and the outer sidewall of the slider are in contact, pushing the slider to fit into the cavity.

[0021] This utility model discloses a molding device for a soft rubber layer of a handrail. A sprue sleeve is provided on the upper mold frame. The sprue sleeve is connected to the sprue channel and is used to connect to the feeding mechanism of an external injection molding machine.

[0022] This utility model discloses a molding device for a soft rubber layer of a handrail. Four mold guide pillars are arranged at the four corners of the molding end of the upper mold frame, and four mold guide sleeves are arranged at the four corners of the material discharge end of the lower mold frame. The four mold guide pillars are slidably inserted into the four mold guide sleeves respectively.

[0023] This utility model discloses a molding device for a soft rubber layer of a handrail, wherein the mold guide post is provided with an exhaust groove.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] By setting a reasonable flow channel layout, the molten raw material flows more smoothly during the conveying process, solving the problems of poor flow and uneven filling caused by unreasonable flow channel layout in traditional devices, and improving the molding accuracy and surface quality of the soft rubber layer. The connection design between the flow channel and the molding cavity, combined with a reasonable gating channel, allows the raw material to fill each molding cavity quickly and evenly, reducing defects such as insufficient filling, air bubbles, and weld lines, and improving molding efficiency and quality. The cooperative design of the slider with the inclined guide post and inclined guide hole enables precise sliding of the slider, avoiding the high maintenance costs and operation difficulties caused by the complex mold structure in traditional devices, and improving the economy and stability of the equipment. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is an enlarged structural diagram of the lower mold;

[0029] Figure 3 This is an enlarged structural diagram of the upper mold;

[0030] Figure 4 This is a schematic diagram of the cooling water circuit layout;

[0031] Figure 5 This is a schematic diagram of the layout structure of the gate runner;

[0032] The following are labels in the attached diagram: 1. Lower mold frame; 11. Mold foot; 12. Lower core; 13. Runner; 14. Slider; 15. Angled guide hole; 16. Mold guide sleeve; 2. Upper mold frame; 21. Upper core; 22. Angled guide pillar; 23. Sprue runner; 24. Cooling water channel; 25. Quick-connect coupling; 26. Water supply hose; 27. Wedge block; 28. Sprue sleeve; 29. ​​Mold guide pillar. Detailed Implementation

[0033] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0034] like Figures 1 to 5 As shown, the present invention provides a molding device for a soft rubber layer on an armrest, comprising:

[0035] Lower mold frame 1 is used to support and install various molding components on the lower mold;

[0036] Upper mold frame 2 is used to support the various molding components on which the upper mold is installed;

[0037] The lower mold frame 1 includes:

[0038] Mold foot 11 is used to support the entire mold and to fix the lower mold on the injection molding machine when the mold is installed;

[0039] Four lower cores 12 are provided on the forming end face of the lower mold frame 1;

[0040] The flow channel 13 is provided on the lower mold frame 1. The flow channel 13 is used to connect the four lower cores 12 and to transport molten raw materials.

[0041] Two sliders 14 are symmetrically slidably arranged on the lower mold frame 1 to assist in the forming of the soft rubber layer of the armrest. Each slider 14 is provided with two oblique guide holes 15.

[0042] Upper frame 2 includes:

[0043] Four upper cores 21 are provided on the molding end face of the upper mold frame 2. The four upper cores 21 and the four lower cores 12 correspond to each other to form four molding cavities for the soft rubber layer of the armrest.

[0044] Four inclined guide pillars 22 are fixedly installed on the upper mold frame 2. The four inclined guide pillars 22 correspond one-to-one with the four inclined guide holes 15. The inclined guide pillars 22 are slidably inserted into the inclined guide holes 15.

[0045] The upper mold frame 2 has a vertically arranged gate runner 23 in the middle of the mold frame 2. The gate runner 23 is connected to the runner 13. The gate runner 23 is used to introduce the molten material of the injection molding machine.

[0046] The working process and principle of the device are as follows: The upper mold frame 2, carrying the upper core 21 and the inclined guide post 22, moves downwards, gradually approaching the lower mold frame 1; as the upper mold frame 2 continues to move downwards, the inclined guide post 22 inserts into the inclined guide hole 15 of the upper slider 14 of the lower mold frame 1; due to the inclined surface cooperation between the inclined guide post 22 and the inclined guide hole 15, during the mold closing process, the inclined guide post 22 generates a horizontal force on the slider 14, causing the two sliders 14 to slide symmetrically and move closer to each other, completing the auxiliary molding preparation work for the molding cavity; when the upper mold frame 2 and the lower mold frame 1 are completely closed, The upper core 21 and lower core 12 correspond to each other, forming four complete molded cavities for the soft rubber layer of the armrest. The molten material from the injection molding machine is introduced through the gate runner 23 in the middle of the upper mold frame 2. The gate runner 23 is interconnected with the runner 13 on the lower mold frame 1. The material is evenly transported through the runner 13 to the four molded cavities formed by the lower core 12 and the upper core 21. Due to the reasonable layout of the runner 13, the molten material can be ensured to flow smoothly during the transportation process and evenly fill each molded cavity. The molten material flows smoothly through the runner 13 and the gate runner 21. Guided by 3, the material smoothly enters each molding cavity, cools and solidifies within the cavity, forming the soft rubber layer of the armrest. After injection molding, the upper mold frame 2 moves upward, causing the inclined guide post 22 to be pulled out from the inclined guide hole 15. As the inclined guide post 22 is pulled out, the slider 14 slides in the opposite direction along the inclined guide hole 15 under the action of the inclined surface of the inclined guide post 22, achieving symmetrical mold opening. By setting a reasonable flow channel 13 layout, the molten material flows more smoothly during the conveying process, solving the problems of poor flow and uneven filling caused by unreasonable flow channel layout in traditional devices, thus improving efficiency. The device improves the molding precision and surface quality of the soft rubber layer. The design of the flow channel 13 and the molding cavity, combined with the reasonable gate flow channel 23, enables the raw material to be quickly and evenly filled into each molding cavity, reducing defects such as insufficient filling, air bubbles, and weld lines, and improving molding efficiency and quality. The design of the slider 14 in conjunction with the inclined guide post 22 and the inclined guide hole 15 enables the slider 14 to slide precisely, avoiding the high maintenance costs and operational difficulties caused by the complex mold structure in traditional devices, and improving the economy and stability of the equipment.

[0047] The upper mold frame 2 has a cooling water channel 24 internally connected to it. The cooling water channel 24 is located close to the upper core 21 and is used to cool and shape the soft rubber layer of the armrest formed on the upper core 21. The cooling water channel 24 is provided with an inlet and an outlet. Before injection molding begins, cooling water is introduced through the inlet of the cooling water channel 24. The cooling water flows in the cooling water channel 24. Because the cooling water channel 24 is located close to the upper core 21, the cooling water will exchange heat with the upper core 21, preheating the upper core 21 to a suitable temperature. This prevents the molten material from contacting the overly cold surface of the upper core 21 during injection molding and cooling rapidly, which could lead to molding defects. The molten material of the injection molding machine enters the runner 13 through the gate runner 23. The molten material is then filled into the molding cavity formed by the upper core 21 and the lower core 12. Once the molding cavity is filled with the molten material, the cooling and molding stage begins. Cooling water flows rapidly in the cooling water channel 24, efficiently carrying away the heat from the upper core 21, causing the soft rubber layer on the upper core 21 to cool and solidify quickly. As cooling progresses, the soft rubber layer gradually takes shape, and its shape and size gradually stabilize. After a certain cooling time, when the soft rubber layer is basically formed, the cooling water continues to flow for a period of time to ensure complete cooling of the soft rubber layer and prevent deformation due to excessive temperature during mold opening. Then, the cooling water supply is turned off, and the cooling water is discharged from the cooling water channel 24 through the outlet. After cooling is complete, the upper core 21... The mold frame 2 and the lower mold frame 1 are opened. At this time, the soft rubber layer of the armrest on the upper core 21 has been completely cooled and formed, and can be smoothly removed from the molding cavity. The cooling water channel 24 is set close to the upper core 21, which can quickly and evenly remove the heat of the upper core 21, avoiding defects such as uneven shrinkage, bubbles, and deformation of the molten material due to uneven temperature during the molding process, thus improving the molding accuracy and surface quality of the soft rubber layer of the armrest. By precisely controlling the cooling process, the soft rubber layer of the armrest can shrink evenly during the cooling process, ensuring its dimensional stability and consistency, and meeting the high precision requirements of the product. The existence of the cooling water channel 24 accelerates the cooling speed of the soft rubber layer of the armrest and shortens the molding cycle. In this molding device, the soft rubber layer requires natural cooling or other inefficient cooling methods, resulting in a long cooling time. However, this device, through forced cooling via cooling water channel 24, can significantly shorten the cooling time and improve production efficiency. Due to the shortened cooling time, the mold turnover speed is accelerated, enabling continuous production, reducing mold downtime, and improving equipment utilization. Improved molding quality means a lower defect rate, reducing scrap and rework caused by molding defects, and lowering raw material waste and production costs. Cooling water channel 24 can promptly remove heat from the upper core 21, preventing the mold from experiencing thermal fatigue and deformation due to prolonged high temperatures, extending the mold's service life, and improving equipment reliability.

[0048] The inlet and outlet of the cooling water circuit 24 are both threaded with quick-connect couplings 25, and each quick-connect coupling 25 is connected to a water supply hose 26, which is connected to an external cooling water tank. The quick-connect couplings 25 make the connection between the water supply hose 26 and the cooling water circuit 24 simple and quick, without the need for complicated tools and cumbersome operating procedures, greatly shortening the installation time and improving production efficiency. When maintenance or replacement of cooling system components is required, the water supply hose 26 can be quickly disconnected from the quick-connect couplings 25, facilitating the repair or replacement of the cooling water circuit 24, quick-connect couplings 25, or water supply hose 26, reducing maintenance costs and difficulty. The water supply hose 26 has a certain degree of flexibility, which can adapt to positional changes and vibrations of the molding device during installation and use, ensuring the stable operation of the cooling water circulation system. At the same time, the quick-connect couplings 25 are highly versatile and can be used with water supply hoses 26 of different specifications and models, improving the adaptability and flexibility of the molding device.

[0049] The water inlet hose 26 of cooling water circuit 24 is blue, representing cold water, while the outlet hose 26 is red, representing hot water. This color coding provides workers with intuitive visual cues, enabling them to quickly and accurately identify the inlet and outlet hoses 26 during the installation, connection, and maintenance of the cooling water circulation system. This avoids connection errors due to misoperation, improves work efficiency, reduces the risk of cooling water circulation failures caused by incorrect connections, ensures the normal operation of the cooling system, and improves the stability and reliability of the production process. The clear distinction between red and blue hoses indicates hot water. The color-coded system reminds staff to pay attention to high-temperature areas during operation, preventing scalding accidents caused by contact with hot water and ensuring staff safety. It also helps staff develop good operating habits, adhering to the prescribed color markings and reducing safety accidents caused by improper operation. During equipment maintenance and repair, the color markings help staff quickly locate the inlet and outlet water hoses 26, facilitating inspection, repair, or replacement of the cooling water circuit 24, quick-connect fittings 25, or water hoses 26, improving maintenance efficiency. Furthermore, the color markings make the management of the cooling water circulation system clearer, facilitating equipment classification, management, and recording, which is beneficial for long-term equipment maintenance and management.

[0050] Two wedge blocks 27 are symmetrically fixedly installed on the upper mold frame 2. The inner sidewall of the wedge block 27 is set as an inclined surface, and the outer sidewall of the slider 14 is set as an inclined surface. When the upper mold frame 2 and the lower mold frame 1 are closed, the inner sidewall of the wedge block 27 fits against the outer sidewall of the slider 14, pushing the slider 14 towards the cavity. Since both the inner sidewall of the wedge block 27 and the outer sidewall of the slider 14 are set as inclined surfaces, as the wedge block 27 descends, its inner sidewall gradually begins to contact the outer sidewall of the slider 14. As the mold closing process continues, the wedge block 27 continues to move towards the cavity. As the upper mold frame 2 moves downward, the inclined surface of the inner wall of the wedge block 27 interacts with the inclined surface of the outer wall of the slider 14, generating a horizontal thrust. This thrust pushes the slider 14 along the sliding track on the lower mold frame 1 towards the cavity, causing the slider 14 to gradually fit tightly against the cavity. When the upper mold frame 2 and the lower mold frame 1 are fully closed, the inner wall of the wedge block 27 and the outer wall of the slider 14 are fully fitted, and the slider 14 fits accurately against the cavity. At this time, the four upper cores 21 and the four lower cores 12 correspond to each other to form four complete molds. The soft rubber layer of the handrail is molded in a cavity, preparing it for subsequent injection molding. The inclined surface fit structure between the wedge block 27 and the slider 14 ensures that the slider 14 can accurately fit onto the cavity during mold closing, avoiding problems such as dimensional deviations and irregular shapes in the soft rubber layer caused by inaccurate slider 14 positioning, thereby improving the molding accuracy of the soft rubber layer. Accurate slider 14 fit can effectively prevent molten material from overflowing in the gap between the slider 14 and the cavity, reducing flash and improving the surface quality of the product. During injection molding, the molten material exerts significant pressure on the mold. The pushing force of the wedge block 27 on the slider 14 ensures that the slider 14 fits tightly against the cavity, providing additional support and fixation for the mold, enhancing the overall stability of the mold, reducing deformation and shaking of the mold during injection molding, and ensuring the smooth progress of the molding process. The inclined surface fit structure can withstand a certain lateral force, preventing the slider 14 from shifting under injection pressure, further improving the stability and reliability of the mold.

[0051] A sprue sleeve 28 is provided on the upper mold frame 2, which is connected to the sprue runner 23. The sprue sleeve 28 is used to connect to the feeding mechanism of the external injection molding machine. The connection between the sprue sleeve 28 and the sprue runner 23 allows the molten material to be directly and smoothly transported from the feeding mechanism of the injection molding machine to the molding cavity, reducing the resistance of the material during the transportation process and improving the material transportation efficiency. Due to the smooth material transportation, the molding cavity can be filled in a shorter time, shortening the injection molding cycle and improving production efficiency. The reasonable material transportation method can avoid defects such as bubbles, shrinkage cavities, and cracks in the soft rubber layer caused by problems such as poor material flow and uneven filling, thus improving the product qualification rate. When maintenance of the injection molding machine or mold is required, the connection between the sprue sleeve 28 and the injection molding machine feeding mechanism is easy to disassemble and install, which facilitates the maintenance and upkeep of the equipment.

[0052] Four mold guide pillars 29 are arranged at the four corners of the forming end of the upper mold frame 2, and four mold guide sleeves 16 are arranged at the four corners of the material discharge end of the lower mold frame 1. The four mold guide pillars 29 are slidably inserted into the four mold guide sleeves 16 respectively. When the injection molding machine is ready to perform the mold closing operation, the mold closing mechanism of the injection molding machine starts to move, pushing the upper mold frame 2 downward. During the movement, the four mold guide pillars 29 on the upper mold frame 2 gradually approach the four mold guide sleeves 16 on the lower mold frame 1. As the upper mold frame 2 continues to move downward, the front ends of the mold guide pillars 29 open. The mold guide 29 is initially inserted into the mold guide sleeve 16. Since the shape and size of the mold guide post 29 and the mold guide sleeve 16 are precisely designed, their cooperation can achieve a preliminary guiding effect, ensuring that the upper mold frame 2 moves downward in the predetermined direction and position, and preventing the upper mold frame 2 from shifting or shaking during the movement. When the mold guide post 29 is fully inserted into the mold guide sleeve 16, the upper mold frame 2 and the lower mold frame 1 achieve precise positioning and docking. At this time, the upper core 21 and the lower core 12 correspond to each other, forming four molding cavities for the soft rubber layer of the armrest. The inner wall of the wedge block 27 fits against the outer wall of the slider 14, pushing the slider 14 towards the cavity; the inclined guide post 22 slides into the inclined guide hole 15, completing the mold closing action and preparing for subsequent injection molding; the cooperation between the mold guide post 29 and the mold guide sleeve 16 enables precise positioning of the upper mold frame 2 and the lower mold frame 1, ensuring that the upper core 21 and the lower core 12 can accurately align, forming a molding cavity with a shape and size that meets the design requirements; this avoids dimensional deviations and deformations in the soft rubber layer product caused by inaccurate mold closing. The mold guide pillars 29 and 16 work together to reduce direct friction and collision between the upper mold frame 2 and the lower mold frame 1 during mold closing and opening, thus reducing mold wear. This extends the mold's service life, reduces the frequency of mold repair and replacement, and lowers the company's production costs. The guiding function of the mold guide pillars 29 and 16 enables the upper mold frame 2 and the lower mold frame 1 to complete mold closing and opening actions quickly and accurately, reducing mold closing and opening time and improving production efficiency.

[0053] The mold guide pillar 29 is equipped with venting grooves. When the injection molding machine drives the upper mold frame 2 to move downwards for mold closing, the mold guide pillar 29 gradually inserts into the mold guide sleeve 16 of the lower mold frame 1. At this time, the gap between the guide pillar and the guide sleeve is relatively large, and the air distribution is relatively dispersed. However, as the guide pillar penetrates deeper, the gap gradually decreases, and the air begins to be compressed. Because the mold guide pillar 29 is equipped with venting grooves, the compressed air will move upwards along the venting grooves, forming a preliminary venting channel. As the mold closing continues, the clearance between the guide pillar and the guide sleeve further decreases, and the air is compressed. As the degree of penetration increases, the venting groove plays a crucial role in venting air, allowing it to continuously escape and preventing excessive air accumulation in the gap between the guide post and the guide sleeve. Simultaneously, the timely air expulsion reduces resistance to the guide post's movement, enabling it to continue moving downwards more smoothly. When the guide post is about to fully insert into the guide sleeve, the gap between them reaches its minimum, and the air is compressed to its limit. However, due to the presence of the venting groove, air can still escape, preventing trapped air that could cause problems with the guide post. Increased friction between the guide post and the guide sleeve creates additional resistance when the upper mold frame moves downwards to close the mold. The venting grooves effectively expel air trapped in the gap between the guide post and the guide sleeve, reducing closing resistance and making the closing process smoother, thus improving accuracy and efficiency. During rapid mold closing, without venting grooves, air cannot be expelled in time, potentially causing the guide post to jam within the guide sleeve, hindering smooth mold closing. The presence of venting grooves prevents this, ensuring accurate and rapid mold closing. When trapped air is rapidly compressed within the gap between the guide post and the guide sleeve, the air temperature and pressure rise sharply. When the pressure exceeds the air's tolerance limit, a violent explosion occurs, producing a sonic boom. Venting grooves expel trapped air promptly, reducing air pressure and temperature, preventing sonic booms, protecting the mold and injection molding machine, and extending equipment lifespan. Sonic booms generate significant noise, negatively impacting the physical and mental health of operators. Venting grooves reduce sonic booms, lowering noise pollution in the working environment and providing operators with a more comfortable and safer working environment.

[0054] The present invention relates to a forming device for a soft rubber layer of a handrail. Its installation method, connection method, or setting method are all common mechanical methods. Any method that can achieve its beneficial effect can be implemented.

[0055] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A molding device for a handrail soft rubber layer, characterized by, The utility model relates to a mould for forming a handrail soft rubber layer, which comprises: a lower mould frame for bearing and mounting various forming parts of a lower mould; an upper mould frame for bearing and mounting various forming parts of an upper mould; wherein the lower mould frame comprises: a mould foot for supporting the whole mould and fixing the lower mould on an injection molding machine when the mould is on the machine; four lower cores provided on the forming end face of the lower mould frame; a flow channel provided on the lower mould frame, which is used for connecting the four lower cores and conveying molten raw materials; two sliders symmetrically provided on the lower mould frame, which are used for assisting the forming of the handrail soft rubber layer, and two inclined guide holes are provided on each slider; the upper mould frame comprises: four upper cores provided on the forming end face of the upper mould frame, which correspond to the four lower cores to form four forming cavities of the handrail soft rubber layer; four inclined guide columns fixedly installed on the upper mould frame, which correspond to the four inclined guide holes, and the inclined guide columns are slidably inserted into the inclined guide holes; a gate flow channel vertically provided in the middle of the upper mould frame, which is in communication with the flow channel and is used for introducing molten raw materials from the injection molding machine.

2. The handrail soft rubber layer forming apparatus of claim 1, wherein a cooling water channel provided in the upper mould frame, which is close to the upper cores and is used for cooling and forming the handrail soft rubber layer formed on the upper cores, and a water inlet and a water outlet are provided on the cooling water channel.

3. The apparatus according to claim 2, wherein The water inlet and the water outlet of the cooling water channel are both threadedly inserted with quick connectors, and water supply hoses are in communication with the quick connectors, and the water supply hoses are in communication with an external cooling water tank.

4. The apparatus according to claim 3, wherein The water supply hose on the water inlet of the cooling water channel is a blue hose, and blue represents cold color, which indicates cold water, and the water supply hose on the water outlet of the cooling water channel is a red hose, and red represents warm color, which indicates hot water.

5. The apparatus of claim 1, wherein the apparatus further comprises a plurality of rollers arranged to form the soft gel layer on the handrail. Two wedge blocks are symmetrically fixedly installed on the upper mould frame, the inner side wall of the wedge block is provided with an inclined surface, the outer side wall of the slider is provided with an inclined surface, and when the upper mould frame and the lower mould frame are closed, the inner side wall of the wedge block is in contact with the outer side wall of the slider to push the slider to the cavity.

6. The apparatus of claim 1, wherein the apparatus further comprises a plurality of rollers disposed between the first and second conveyor belts. A gate sleeve is provided on the upper mould frame, which is in communication with the gate flow channel and is used for connecting the feeding mechanism of the external injection molding machine.

7. The apparatus of claim 1, wherein the apparatus further comprises a plurality of rollers disposed between the first and second conveyor belts. Four mould guide columns are arranged at the four corners of the forming end of the upper mould frame, and four mould guide sleeves are arranged at the four corners of the forming end of the lower mould frame, and the four mould guide columns are slidably inserted into the four mould guide sleeves.

8. The apparatus according to claim 7, wherein the apparatus is characterized by: An exhaust groove is provided on the mould guide column.

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