Rubber injection molding machine with high cooling speed

Abstract

The utility model discloses a rubber injection molding machine with high cooling speed, which relates to the technical field of rubber injection molding and comprises a case, a lower mold mechanism is fixedly mounted at the top of the case, an upper mold mechanism is fixedly mounted at the lower end of a support frame, and a molding machine main body is fixedly mounted at the top of the support frame. By the adoption of the structure, the second motor drives the rotating shaft and the lead screw to rotate, the sliding block slides in the sliding groove in a reciprocating mode, transverse displacement of the lower die is flexibly adjusted, the lower die is rapidly separated from the upper die, and meanwhile the second motor can drive the lower die on the outer side of the rotating shaft to change the position. The lower mold is repositioned at the bottom of the upper mold, one of the two groups of lower molds outside the upper mold can be quickly dismounted and demolded, the other group can be remounted, continuous forming is realized, the device is simple and convenient to operate, the processing efficiency is improved, and uninterrupted production forming processing is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber injection molding, and particularly relates to a rubber injection molding machine with a fast cooling speed. Background Art

[0002] Rubber refers to a highly elastic polymer material with reversible deformation. It is elastic at room temperature, can produce large deformations under very small external forces, and can return to its original state after the external forces are removed. The injection machine used for the production of rubber seals is an auxiliary device used in the production and processing of rubber seals. It heats and extrudes rubber to make it better for forming. It has been widely used in the technical field of injection machines. In the existing rubber injection molding machine, after injecting rubber raw materials on the mold plate, a large amount of heat will be generated on the mold plate. During operation, operators are prone to accidental burns, so it needs to be improved.

[0003] Chinese patent with the publication number of "CN216182537U" discloses a heat-insulating rubber injection molding machine, which includes a molding machine main body. A bottom plate is arranged on the upper surface of the molding machine main body. A lower mold is arranged on the upper surface of the bottom plate. Columns are connected to the molding machine main body near the bottom plate. A fixing plate is sleeved on the columns. A hydraulic cylinder is arranged on the upper surface of the fixing plate. The bottom end of the hydraulic rod at the output end of the hydraulic cylinder is connected to a lifting plate. An upper template is arranged on the lower surface of the lifting plate. A heat-insulating frame is covered on the upper surface of the bottom plate. An opening for inserting the lower mold is formed on one side of the heat-insulating frame. In the heat-insulating frame, the lower mold and the upper mold are used to form rubber products, playing a role in heat insulation. At the same time, the lower mold is arranged on a moving plate. When the moving plate moves on the molding machine main body, it can drive the lower mold in the heat-insulating frame, which not only benefits the cooling and forming of rubber, improves production efficiency, but also facilitates the removal of the formed rubber products.

[0004] During the use of the above device, although the lower mold can be quickly withdrawn for demolding, during the specific application process, when the lower mold is withdrawn for demolding, the equipment is in a stagnant state, and it is obvious that it cannot carry out continuous and uninterrupted processing, and the overall processing efficiency is low. And during the processing process, the above equipment lacks a cooling structure and cannot quickly cool the lower mold during use, and the overall mold forming efficiency is relatively slow, so it needs to be improved. Summary of the Utility Model

[0005] Aiming at the problems mentioned in the background art, the purpose of the utility model is to provide a rubber injection molding machine with a fast cooling speed to solve the problems raised in the background art.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A rubber injection molding machine with a fast cooling speed. A lower mold mechanism is fixedly installed at the top of the machine case. On one side of the machine case away from the lower mold mechanism at the top, a support frame is fixedly installed. At the top of the support frame, a molding machine main body is fixedly installed. At the lower end of the support frame, an upper mold mechanism is fixedly installed. The upper mold mechanism covers the outside of the lower mold mechanism. On one side of the support frame away from the lower mold mechanism, a cooling mechanism is fixedly installed. The refrigerating end of the cooling mechanism is spirally arranged on the outside of the upper mold mechanism.

[0008] The upper mold mechanism includes a telescopic cylinder. The telescopic cylinder is fixedly installed in the middle of the back of the molding machine main body. The bottom output end of the telescopic cylinder is fixedly installed with a top plate. The bottom of the top plate is fixedly installed with an upper mold body. The refrigerating end of the cooling mechanism is sleeved on the outside of the upper mold body. The upper mold mechanism is driven by the telescopic cylinder to realize the rapid opening and closing with the lower mold mechanism, which is convenient for the injection and removal of rubber. The cooling mechanism cleverly spirally arranges the refrigerating end on the outside of the upper mold mechanism to directly cool the upper mold body, greatly improving the cooling speed.

[0009] As a preferred technical solution, two groups of support rods are fixedly installed at the front end of one side of the machine case away from the lower mold mechanism at the top. The tops of the two groups of support rods penetrate through the top plate. The top plate is slidably connected to the outer surface of the support rods. The support rods not only provide additional support for the top plate, making it more stable when moving up and down driven by the telescopic cylinder, but also ensure the smoothness and accuracy of the top plate during the sliding process.

[0010] As a preferred technical solution, the cooling mechanism includes a side plate. The side plate is fixedly installed on one side of the support frame. A cooling box is fixedly installed on the outside of the side plate. A semiconductor refrigerator is fixedly installed on the back of the cooling box. The refrigerating end of the semiconductor refrigerator is arranged inside the cooling box. The inside of the cooling box is filled with a coolant. A hose is fixedly installed on the outside of the cooling box. The outer end of the hose is fixedly installed with a heat conduction coil. A water pump is fixedly installed in the middle at the back of the heat conduction coil. The output end of the water pump is communicated with the heat conduction coil. The input end of the water pump is communicated with the inside of the cooling box through the hose. The output end of the heat conduction coil is communicated with the cooling box through the hose. The side plate is fixedly installed on one side of the support frame to play a role in supporting and fixing the cooling box. The inside of the cooling box is filled with a coolant. The coolant circulates to take away the heat from the heat conduction coil to achieve the cooling effect.

[0011] As a preferred technical solution, the heat-conducting coil is spirally arranged to cover the outer surface of the upper mold, and the corners of the chassis are all set to be arc-shaped. The spirally arranged heat-conducting coil can contact the outer surface of the upper mold more comprehensively, so as to more effectively absorb and take away the heat generated by the mold during the rubber molding process. This tightly fitting cooling method not only improves the cooling speed, but also makes the cooling more uniform, effectively preventing the quality problems of rubber products caused by local overheating.

[0012] As a preferred technical solution, the lower mold mechanism includes a chute and a first motor. The first motor is fixedly installed at the upper end of one side of the chassis. The chute is opened in the middle of the top of the chassis. A lead screw is rotatably connected inside the chute. The output end of the first motor is fixedly connected to one end of the lead screw. A sliding block is threadedly connected to the outer surface of the lead screw. The lower mold assembly is fixedly installed on the top of the sliding block. The chute provides a stable moving track for the lead screw and the sliding block. The output end of the first motor is fixedly connected to one end of the lead screw. By driving the lead screw to rotate, the reciprocating sliding of the sliding block in the chute is realized. This design enables the lower mold assembly to be conveniently displaced horizontally, facilitating the molding and demolding of rubber products. The outer surface of the lead screw is threadedly connected to the sliding block. This connection method ensures that the sliding block can move smoothly along the lead screw. At the same time, the rotational movement of the lead screw can be accurately converted into the linear movement of the sliding block. The lower mold assembly is fixedly installed on the top of the sliding block, enabling the lower mold assembly to move with the movement of the sliding block, thereby realizing rapid mold change and continuous production.

[0013] As a preferred technical solution, the lower mold assembly includes a fixed frame and a placement frame. The fixed frame is fixedly installed on the top of the sliding block. A second motor is fixedly installed inside the fixed frame. The output end of the second motor penetrates the fixed frame and is fixedly installed with a rotating shaft. A receiving frame is fixedly installed on the top of the rotating shaft. A limiting shaft is fixedly installed at the bottom of the placement frame. A limiting hole is opened at the outer end of the receiving frame. The limiting shaft is inserted into the inner side of the limiting hole. The lower mold body is fixedly installed on the outside of the placement frame. The fixed frame serves as the support structure of the entire lower mold assembly. Through the connection of the sliding block with the chute and the lead screw, the horizontal displacement function of the lower mold assembly is realized. The second motor is installed inside the fixed frame. By driving the rotating shaft to rotate, the position and angle of the receiving frame can be conveniently adjusted, thereby realizing the flexible adjustment of the placement frame and the lower mold body. The placement frame serves as the installation platform of the lower mold body. Through the cooperation of the limiting shaft and the limiting hole on the receiving frame, the rapid installation and disassembly of the lower mold body are realized.

[0014] As a preferred technical solution, the overall cross-sectional shape of the sliding block and the sliding groove is set to a convex shape, the outer surface of the sliding block and the inner wall of the sliding groove are fixedly connected with wear-resistant gaskets, the cross-sectional shape of the inner end contact of the fixed frame and the placement frame is set in a stepped shape, and the overall cross-sectional shape of the sliding block and the sliding groove is set to a convex shape. This design can increase the stability and guidance of the sliding block in the sliding groove, making the sliding block more stable during movement and less prone to displacement or shaking.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] First, by setting the cooling mechanism to cooperate with the lower mold body mechanism, the device can start the molding machine body during operation, push the upper mold body and the lower mold body to close through the telescopic cylinder, and after the fluid material is injected, start the water pump to circulate the coolant in the heat conduction coil and the cooling box, quickly extract the heat energy of the mold body, achieve efficient heat dissipation, improve molding efficiency and ease of use, and at the same time, the semiconductor refrigerator assists in cooling, ensures long-term and efficient heat dissipation, and improves the overall heat dissipation efficiency;

[0017] Second, the second motor drives the rotating shaft and the screw to rotate, and the sliding block slides back and forth in the slide groove, flexibly adjusting the lateral displacement of the lower mold to quickly separate it from the upper mold. At the same time, the second motor can drive the lower mold on the outside of the rotating shaft to change its position. Combined with the reverse operation of the first motor, the lower mold is repositioned to the bottom of the upper mold. Of the two groups of lower molds on the outside, one group can be quickly disassembled and demolded, and the other group can be reinstalled to achieve continuous molding. The device is easy to operate, improves processing efficiency, and realizes uninterrupted production and molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the lower mold assembly of the utility model;

[0022] Figure 5 It is a structural schematic diagram of the lower mold component of the utility model in a disassembled state.

[0023] Reference numerals: 1, chassis; 2, lower die mechanism; 21, chute; 22, first motor; 23, lead screw; 24, sliding block; 25, lower die assembly; 251, fixing frame; 252, placing frame; 253, second motor; 254, rotating shaft; 255, receiving frame; 256, limiting shaft; 257, limiting hole; 258, lower die body; 3, upper die mechanism; 31, telescopic cylinder; 32, top plate; 33, upper die body; 34, support rod; 4, main body of molding machine; 5, support frame; 6, cooling mechanism; 61, side plate; 62, cooling box; 63, semiconductor refrigerator; 64, hose; 65, heat conduction coil; 66, water pump. Detailed implementation manners

[0024] Embodiment

[0025] Reference Figures 1 to 5 , in a rubber injection molding machine with fast cooling speed in this embodiment, a lower die mechanism 2 is fixedly installed at the top of a chassis 1, a support frame 5 is fixedly installed on one side of the top of the chassis 1 far away from the lower die mechanism 2, a main body 4 of a molding machine is fixedly installed at the top of the support frame 5, an upper die mechanism 3 is fixedly installed at the lower end of the support frame 5, the upper die mechanism 3 covers the outside of the lower die mechanism 2, a cooling mechanism 6 is fixedly installed on one side of the support frame 5 far away from the lower die mechanism 2, and the refrigerating end of the cooling mechanism 6 is spirally arranged outside the upper die mechanism 3;

[0026] The upper die mechanism 3 includes a telescopic cylinder 31, the telescopic cylinder 31 is fixedly installed in the middle of the back of the main body 4 of the molding machine, the bottom output end of the telescopic cylinder 31 is fixedly installed with a top plate 32, the bottom of the top plate 32 is fixedly installed with an upper die body 33, the refrigerating end of the cooling mechanism 6 is sleeved outside the upper die body 33, and the upper die mechanism 3 is driven by the telescopic cylinder 31 to realize rapid opening and closing with the lower die mechanism 2, facilitating the injection and extraction of rubber. The cooling mechanism 6 cleverly spirally arranges the refrigerating end outside the upper die mechanism 3 to directly cool the upper die body 33, greatly improving the cooling speed. When working, the upper die mechanism 3 and the lower die mechanism 2 are closed, and rubber raw materials are injected into the lower die mechanism 2 and the upper die mechanism 3. After the upper die mechanism 3 is closed, the rubber is vulcanized and formed under high temperature and high pressure. At this time, the refrigerating end of the cooling mechanism 6 starts to work to quickly cool the upper die body 33, enabling the rubber product to be quickly shaped and reach the required hardness. This design not only improves the production efficiency, but also reduces the deformation and shrinkage of the rubber during the vulcanization process due to the increased cooling speed, thereby improving the precision and quality of the product. In addition, the molding machine is simple to operate and convenient to maintain, providing strong technical support for the production of rubber products.

[0027] Reference Figure 2, on the front end of one side of the top of the chassis 1 away from the lower die mechanism 2, two groups of support rods 34 are fixedly installed. The tops of the two groups of support rods 34 penetrate through the top plate 32. The top plate 32 is slidably connected to the outer surface of the support rods 34. The setting of the support rods 34 not only provides additional support for the top plate 32, making it more stable when moving up and down driven by the telescopic cylinder 31, but also ensures the smoothness and accuracy of the top plate 32 during the sliding process. The top plate 32 is slidably connected to the outer surface of the support rods 34. Such a design not only ensures that the top plate 32 can slide stably along the support rods 34, but also makes the entire upper die mechanism 3 operate more smoothly, reducing errors caused by vibration or deviation. Such a structural design makes the rubber injection molding machine more reliable during use, improves production efficiency, and also extends the service life of the equipment.

[0028] Reference Figures 1 - 3, the cooling mechanism 6 includes side plates 61. The side plates 61 are fixedly installed on one side of the support frame 5. A cooling box 62 is fixedly installed on the outer side of the side plates 61. A semiconductor refrigerator 63 is fixedly installed on the back of the cooling box 62. The refrigerating end of the semiconductor refrigerator 63 is arranged inside the cooling box 62. The inside of the cooling box 62 is filled with coolant. A hose 64 is fixedly installed on the outer side of the cooling box 62. A heat-conducting coil 65 is fixedly installed at the outer end of the hose 64. A water pump 66 is fixedly installed in the middle at the rear side of the heat-conducting coil 65. The output end of the water pump 66 is communicated with the heat-conducting coil 65. The input end of the water pump 66 is communicated with the inside of the cooling box 62 through the hose 64. The output end of the heat-conducting coil 65 is communicated with the cooling box 62 through the hose 64. The side plates 61 are fixedly installed on one side of the support frame 5, playing a role in supporting and fixing the cooling box 62. The inside of the cooling box 62 is filled with coolant. The coolant circulates to take away the heat from the heat-conducting coil 65 to achieve the cooling effect. The semiconductor refrigerator 63 is fixed on the back of the cooling box 62, and its refrigerating end directly acts on the inside of the cooling box 62, further improving the cooling efficiency. The hose 64 connects the cooling box 62, the heat-conducting coil 65 and the water pump 66 to form a closed circulation system. The water pump 66 is responsible for driving the coolant to circulate in the system to ensure that the coolant can flow through the heat-conducting coil 65 evenly and quickly, so as to absorb and take away more heat. The heat-conducting coil 65 is closely attached to the outer side of the upper die mechanism 3. Through heat conduction, the heat of the upper die body 33 is transferred to the coolant. When the rubber injection molding machine works, a large amount of heat will be generated in the upper die mechanism 3. At this time, the cooling mechanism 6 starts to operate. The coolant is driven by the water pump 66, absorbs the heat of the upper die body 33 through the heat-conducting coil 65, and then flows back to the cooling box 62. Inside the cooling box 62, the coolant is further cooled by the action of the semiconductor refrigerator 63, and then returns to the heat-conducting coil 65 through the hose 64 to continue circulating. This design not only ensures the cooling speed and efficiency, but also ensures the cooling uniformity and stability, effectively preventing product quality problems caused by local overheating. In addition, the use of the semiconductor refrigerator 63 further improves the cooling effect, making the entire cooling mechanism 6 more efficient and energy-saving.

[0029] Reference Figures 1 - 3, the heat-conducting coil 65 is spirally arranged to cover the outer surface of the upper mold. The corners of the chassis 1 are all set to be arc-shaped. The spirally arranged heat-conducting coil 65 can contact the outer surface of the upper mold more comprehensively, thereby more effectively absorbing and taking away the heat generated by the mold during the rubber molding process. This tightly fitting cooling method not only improves the cooling speed but also makes the cooling more uniform, effectively preventing quality problems of rubber products caused by local overheating. At the same time, the corners of the chassis 1 are all set to be arc-shaped. This detailed design also improves the performance and user experience of the entire molding machine. The arc-shaped corner design not only makes the appearance of the chassis 1 more smooth and beautiful, but more importantly, it reduces the stress concentration and collision damage that may occur at the corners, enhances the structural strength and durability of the chassis 1. In addition, the arc-shaped corners are also easier to clean and maintain, extending the service life of the molding machine.

[0030] Reference Figures 1 - 5 , the lower mold mechanism 2 includes a chute 21 and a first motor 22. The first motor 22 is fixedly installed at the upper end of one side of the chassis 1. The chute 21 is opened in the middle of the top of the chassis 1. A lead screw 23 is rotatably connected inside the chute 21. The output end of the first motor 22 is fixedly connected to one end of the lead screw 23. A sliding block 24 is threadedly connected to the outer surface of the lead screw 23. The lower mold assembly 25 is fixedly installed on the top of the sliding block 24. The chute 21 provides a stable moving track for the lead screw 23 and the sliding block 24. The output end of the first motor 22 is fixedly connected to one end of the lead screw 23. By driving the lead screw 23 to rotate, the reciprocating sliding of the sliding block 24 in the chute 21 is realized. This design enables the lower mold assembly 25 to be conveniently displaced horizontally, facilitating the molding and demolding of rubber products. The outer surface of the lead screw 23 is threadedly connected to the sliding block 24. This connection method ensures that the sliding block 24 can move smoothly along the lead screw 23. At the same time, the rotational movement of the lead screw 23 can also be accurately converted into the linear movement of the sliding block 24. The lower mold assembly 25 is fixedly installed on the top of the sliding block 24, enabling the lower mold assembly 25 to move with the movement of the sliding block 24, thereby realizing rapid mold change and continuous production. In the actual production process, by controlling the forward and reverse rotation of the first motor 22, the position of the lower mold assembly 25 can be conveniently adjusted. When the mold needs to be changed or maintained, only need to move the sliding block 24 to the appropriate position, and the relevant operations can be easily carried out. This design not only improves production efficiency but also reduces the operation difficulty and labor intensity.

[0031] Reference Figures 4 - 5, the lower die assembly 25 includes a fixing frame 251 and a placing frame 252. The fixing frame 251 is fixedly installed on the top of the sliding block 24. A second motor 253 is fixedly installed inside the fixing frame 251. The output end of the second motor 253 penetrates the fixing frame 251 and is fixedly installed with a rotating shaft 254. A receiving frame 255 is fixedly installed on the top of the rotating shaft 254. A limiting shaft 256 is fixedly installed at the bottom of the placing frame 252. A limiting hole 257 is opened at the outer end of the receiving frame 255. The limiting shaft 256 is inserted into the inner side of the limiting hole 257. A lower die body 258 is fixedly installed on the outer side of the placing frame 252. The fixing frame 251 serves as the support structure of the entire lower die assembly 25. Through the connection of the sliding block 24 with the sliding groove 21 and the lead screw 23, the lateral displacement function of the lower die assembly 25 is realized. The second motor 253 is installed inside the fixing frame 251. By driving the rotation of the rotating shaft 254, the position and angle of the receiving frame 255 can be conveniently adjusted, so as to realize the flexible adjustment of the placing frame 252 and the lower die body 258. The placing frame 252 serves as the installation platform of the lower die body 258. Through the cooperation of the limiting shaft 256 and the limiting hole 257 on the receiving frame 255, the quick installation and disassembly of the lower die body 258 are realized. This design not only simplifies the operation process of replacing the die, but also improves the production efficiency. At the same time, the setting of multiple lower die bodies 258 enables continuous and uninterrupted production and processing. The cooperation of the limiting shaft 256 and the limiting hole 257 also ensures the stability of the placing frame 252, preventing quality problems caused by the movement of the die during the forming process. During the actual use process, when the lower die needs to be replaced or maintained, only by adjusting the position of the receiving frame 255 through the second motor 253 to separate the limiting shaft 256 from the limiting hole 257, the placing frame 252 and the lower die body 258 can be easily removed. Then, install the new lower die body 258 on the placing frame 252, and insert the limiting shaft 256 into the corresponding limiting hole 257 to complete the replacement of the die. This design not only improves the convenience of operation, but also reduces the labor intensity of the operator.

[0032] Reference Figures 1 - 5, the overall cross-sectional shapes of the sliding block 24 and the sliding groove 21 are both set to a convex shape. Wear-resistant gaskets are fixedly connected to the outer surface of the sliding block 24 and the inner wall of the sliding groove 21. The cross-sectional shapes at the contact of the inner ends of the fixed frame 251 and the placement frame 252 are both stepped. The overall cross-sectional shapes of the sliding block 24 and the sliding groove 21 are both set to a convex shape. This design can increase the stability and guiding property of the sliding block 24 in the sliding groove 21, making the sliding block 24 move more smoothly during the movement and not prone to deviation or shaking. The convex cross-sectional shape can also effectively prevent the sliding block 24 from falling off in the sliding groove 21, improving the safety and reliability of the entire lower die mechanism 2. At the same time, wear-resistant gaskets are fixedly connected to the outer surface of the sliding block 24 and the inner wall of the sliding groove 21. This design takes into account the possible wear problems of the sliding block 24 and the sliding groove 21 under long-term friction. The use of wear-resistant gaskets can effectively reduce the friction coefficient between the sliding block 24 and the sliding groove 21, reduce the wear rate, and thus extend their service life. In addition, the wear-resistant gaskets can also play a role in buffering and shock absorption, further improving the stability and durability of the lower die mechanism 2.

[0033] Principle of use and advantages: By setting the cooling mechanism 6 in cooperation with the lower die mechanism 2, during the use of this device, the main body 4 of the molding machine can be started to run. The push top plate 32 is driven by the telescopic cylinder 31 to drive the upper die body 33 to move downward. The upper die body 33 and the lower die body 258 fit together to form a closed structure. At this time, by starting the main body 4 of the molding machine to run, the fluid material is injected into the interiors of the upper die body 33 and the lower die body 258. By starting the water pump 66 to run, the water pump 66 pumps the coolant in the cooling tank 62 to circulate inside the heat conduction coil 65 and the cooling tank 62. Through the circulation of the coolant and the assistance of the heat conduction coil 65 for heat conduction and dissipation, the heat energy on the lower die body 258 and the upper die body 33 can be quickly and efficiently exported, enabling the device to quickly perform heat dissipation and cooling, enabling the whole device to have a strong heat dissipation rate, improving the molding efficiency during the overall production and processing of the device, maximizing the convenience of use of the whole device, and during the heat dissipation process, the semiconductor cooler 63 can be started to run to use the semiconductor cooler 63 to assist in cooling and dissipating the coolant in the cooling tank 62, enabling the whole device to perform efficient and lasting cooling and heat dissipation, and improving the heat dissipation efficiency of the whole device;

[0034] By setting up the lower die mechanism 2, during the use of this device, the second motor 253 can be started to operate. The second motor 253 drives the rotation of the rotating shaft 254. By the rotation of the rotating shaft 254, the lead screw 23 inside the chute 21 can be driven to rotate. By the rotation of the lead screw 23, the sliding block 24 can be driven inside the chute 21. Through the reciprocating sliding displacement of the sliding block 24, the lateral displacement of the lower die body 258 can be assisted and flexibly adjusted at this time, so as to promote the lower die body 258 to move away from the bottom of the upper die body 33. During this period, by starting the telescopic cylinder 31 to operate, the upper die body 33 can be pulled up, promoting the rapid separation of the upper die body 33 and the lower die body 258. At this time, by starting the second motor 253 to drive the rotating shaft 254 to operate, the lower die bodies 258 arranged at equal intervals outside the rotating shaft 254 can be driven to exchange positions. During this period, by starting the first motor 22 to run in the reverse direction, the lower die body 258 can be displaced back to the bottom of the upper die body 33. During this period, one of the two groups of lower die bodies 258 exposed to the outside is removed for demolding the finished product inside the lower die body 258. During the removal, only the limiting shaft 256 and the limiting hole 257 inside the receiving frame 255 and the placing frame 252 need to be separated from each other, and the lower die body 258 can be quickly disassembled and assembled. The other group reinstalls and places the lower die body 258 inside the lower die body 258 located inside the upper die body 33, and re-molding can be carried out. It can be seen that this device can carry out continuous production and forming processing, and at the same time improve the overall processing efficiency and operation convenience.

Claims

1. A rubber injection molding machine with a fast cooling speed, comprising a chassis (1), characterized in that: A lower die mechanism (2) is fixedly installed at the top of the chassis (1). A support frame (5) is fixedly installed on one side of the top of the chassis (1) away from the lower die mechanism (2). A molding machine main body (4) is fixedly installed at the top of the support frame (5). An upper die mechanism (3) is fixedly installed at the lower end of the support frame (5). The upper die mechanism (3) covers the outside of the lower die mechanism (2). A cooling mechanism (6) is fixedly installed on one side of the support frame (5) away from the lower die mechanism (2). The refrigerating end of the cooling mechanism (6) is spirally arranged on the outside of the upper die mechanism (3). The upper die mechanism (3) includes a telescopic cylinder (31). The telescopic cylinder (31) is fixedly installed in the middle of the back of the molding machine main body (4). The bottom output end of the telescopic cylinder (31) is fixedly installed with a top plate (32). The upper die body (33) is fixedly installed at the bottom of the top plate (32). The refrigerating end of the cooling mechanism (6) is sleeved on the outside of the upper die body (33).

2. The rubber injection molding machine with fast cooling speed according to claim 1, wherein: Two groups of support rods (34) are fixedly installed at the front end of one side of the top of the chassis (1) away from the lower die mechanism (2). The tops of the two groups of support rods (34) penetrate through the top plate (32), and the top plate (32) is slidably connected to the outer surface of the support rods (34).

3. A rubber injection molding machine with a fast cooling rate according to claim 1, characterized in that: The cooling mechanism (6) includes a side plate (61). The side plate (61) is fixedly installed on one side of the support frame (5). A cooling box (62) is fixedly installed on the outside of the side plate (61). A semiconductor refrigerator (63) is fixedly installed on the back of the cooling box (62). The refrigerating end of the semiconductor refrigerator (63) is arranged inside the cooling box (62). The inside of the cooling box (62) is filled with a coolant. A hose (64) is fixedly installed on the outside of the cooling box (62). The outer end of the hose (64) is fixedly installed with a heat conduction coil (65). A water pump (66) is fixedly installed in the middle of the back of the heat conduction coil (65). The output end of the water pump (66) is communicated with the heat conduction coil (65). The input end of the water pump (66) is communicated with the inside of the cooling box (62) through the hose (64). The output end of the heat conduction coil (65) is communicated with the cooling box (62) through the hose (64).

4. A rubber injection molding machine with a fast cooling rate according to claim 3, characterized in that: The heat conduction coil (65) is spirally arranged to cover the outer surface of the upper die. The corners of the chassis (1) are all set to be arc-shaped.

5. A rubber injection molding machine with a fast cooling rate according to claim 1, characterized in that: The lower die mechanism (2) includes a chute (21) and a first motor (22). The first motor (22) is fixedly installed at the upper end of one side of the chassis (1). The chute (21) is opened in the middle of the top of the chassis (1). A lead screw (23) is rotatably connected inside the chute (21). The output end of the first motor (22) is fixedly connected to one end of the lead screw (23). A sliding block (24) is threadedly connected to the outer surface of the lead screw (23). The lower die assembly (25) is fixedly installed at the top of the sliding block (24).

6. The rubber injection molding machine with fast cooling speed according to claim 5, characterized in that: The lower die assembly (25) includes a fixing frame (251) and a placing frame (252). The fixing frame (251) is fixedly installed on the top of the sliding block (24). A second motor (253) is fixedly installed inside the fixing frame (251). The output end of the second motor (253) penetrates through the fixing frame (251) and is fixedly installed with a rotating shaft (254). A receiving frame (255) is fixedly installed on the top of the rotating shaft (254). A limiting shaft (256) is fixedly installed at the bottom of the placing frame (252). A limiting hole (257) is formed at the outer end of the receiving frame (255). The limiting shaft (256) is inserted into the inner side of the limiting hole (257). A lower die body (258) is fixedly installed on the outer side of the placing frame (252).

7. A rubber injection molding machine with a fast cooling rate according to claim 6, characterized in that: The overall cross-sectional shapes of the sliding block (24) and the sliding groove (21) are both set to be convex-shaped. Wear-resistant gaskets are fixedly connected to the outer surface of the sliding block (24) and the inner wall of the sliding groove (21). The cross-sectional shapes at the contact positions of the inner ends of the fixing frame (251) and the placing frame (252) are both arranged in a stepped shape.

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