Automatic oil changing system of disc injection molding machine

Abstract

The utility model discloses an automatic oil change system of a disc injection molding machine, which relates to the technical field of disc injection molding machines and comprises a rotating disc, a plurality of mold components are arranged at the top of the rotating disc, and each mold component comprises a first heat dissipation block, a lower mold, an upper mold and a second heat dissipation block. And the interior of the first heat dissipation block is fixedly connected with the exterior of the lower mold. According to the utility model, the oil changing assembly is arranged, the oil changing assembly realizes opening and closing of the mold through oil path control, and when the electromagnetic valves on the second connecting pipe and the fourth connecting pipe are switched according to a preset program, the oil path drives the telescopic rod to slide in the sleeve to drive the piston to move; and linkage of the first heat dissipation block and the second heat dissipation block is controlled through the first connecting pipe and the third connecting pipe correspondingly, automatic mold closing and opening of the lower mold and the upper mold are achieved, the problem of labor waste of manual operation is solved, the labor intensity of workers is reduced, meanwhile, the alignment deviation risk of manual operation is eliminated, and therefore the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to disc injection molding machine technical field, especially disc injection molding machine's automatic oil change system. BACKGROUND

[0002] In the industrial injection molding production, disc injection molding machine becomes the key equipment of batch production because of the multi-station continuous operation. But the traditional equipment has two core pain points: one is that part of small and medium-sized equipment or old equipment still relies on manual mold opening and closing, the mold itself is heavy, manual operation is not only laborious, but also easy to cause mold alignment deviation due to uneven operation force, which affects product precision; two is that a large amount of heat will be generated during mold pouring process, the traditional cooling method is mostly external cooling device, the heat dissipation is uneven and the efficiency is low, high temperature easily leads to shortening of mold life, unstable product forming quality, and seriously restricts production efficiency and product qualification rate.

[0003] Therefore, it is necessary to provide an automatic oil change system for disc injection molding machine to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing disc injection molding machine's automatic oil change system to solve the problems of part of small and medium-sized equipment or old equipment still relying on manual mold opening and closing, heavy weight of mold itself, laborious manual operation and uneven heat dissipation and low efficiency in the background art.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: the automatic oil change system of disc injection molding machine, including rotating disc, the top of rotating disc is provided with a plurality of mold assemblies, the mold assembly includes first heat dissipation block, lower mold, upper mold and second heat dissipation block, the inside of first heat dissipation block is fixedly connected with the outside of lower mold, the inside of second heat dissipation block is fixedly connected with the outside of upper mold, the inside of first heat dissipation block and second heat dissipation block is all set up with oil channel;

[0006] The both sides of first heat dissipation block are provided with oil change assembly, the oil change assembly includes first connecting pipe, one end of first connecting pipe is fixedly connected with the side surface of first heat dissipation block, and the other end of first connecting pipe is fixedly connected with sleeve, the inside of sleeve top is fixedly installed with sealing sleeve, the inside of sealing sleeve is slidably connected with telescopic rod, the bottom end of telescopic rod is fixedly connected with piston, the outside of piston is slidably connected with the inner wall of sleeve, the side surface of sleeve is fixedly connected with fourth connecting pipe;

[0007] The inside of the telescopic rod is hollow, and the bottom end of the telescopic rod is provided with an oil outlet hole.

[0008] Preferably, the second connecting pipe and the fourth connecting pipe are externally fixedly installed with electromagnetic valves.

[0009] Preferably, the fourth connecting pipe is in communication with the oil channel in the sleeve, the first connecting pipe and the first heat dissipation block, and the second connecting pipe is in communication with the oil channel in the telescopic rod, the third connecting pipe and the second heat dissipation block.

[0010] Preferably, the side surface of the sleeve inner cavity is fixedly connected with a first limiting block, the outside of the telescopic rod is fixedly connected with a second limiting block, the outside of the second limiting block is in sliding connection with the inner wall of the sleeve, and the second limiting block is located above the oil outlet hole.

[0011] Preferably, the outside of the piston is sleeved with a sealing ring, and the outside of the sealing ring is in sliding connection with the inner wall of the sleeve.

[0012] Preferably, the bottom of the first heat dissipation block is fixedly connected with the top of the rotary disc, and the top end of the upper mold is fixedly connected with a pouring pipe.

[0013] The technical effects and advantages of the present application are as follows:

[0014] 1. By setting the oil changing assembly, the oil changing assembly realizes mold opening and closing through oil way control, when the electromagnetic valves on the second connecting pipe and the fourth connecting pipe are switched according to the preset program, the oil way drives the telescopic rod to slide in the sleeve, drives the piston to move, and then controls the first heat dissipation block and the second heat dissipation block through the first connecting pipe and the third connecting pipe respectively, realizes the automatic mold closing and mold opening of the lower mold and the upper mold, avoids the labor problem of manual operation, reduces the labor intensity of workers, eliminates the risk of alignment deviation of manual operation, and improves the production efficiency.

[0015] 2. The first heat dissipation block and the second heat dissipation block are both provided with an oil channel, the oil way of the oil changing system drives the mold to move at the same time, the low-temperature oil liquid flows through the oil channel, absorbs the heat generated by the pouring of the lower mold and the upper mold, and then takes away the heat through the oil way circulation, realizes synchronous cooling, avoids product deformation, shrinkage hole and other defects caused by high temperature, and improves the mold heat dissipation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure diagram of the automatic oil changing system of the disc injection molding machine.

[0017] Figure 2It is the cross section schematic view of the sleeve in the utility model.

[0018] Figure 3 It is the cross section schematic view of the sleeve in the utility model.

[0019] In the figure: 1, rotary disc; 2, first radiating block; 3, lower mould; 4, upper mould; 5, second radiating block; 6, pouring pipe; 7, first connecting pipe; 8, sleeve; 9, sealing sleeve; 10, telescopic rod; 11, oil outlet hole; 12, second connecting pipe; 13, third connecting pipe; 14, piston; 15, sealing ring; 16, fourth connecting pipe; 17, first limiting block; 18, second limiting block. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the protection scope of the utility model.

[0021] The utility model provides a disc injection molding machine's automatic oil change system as Figure 1 - Figure 3 The automatic oil change system of disc injection molding machine shown in the figure, including rotary disc 1, the top of rotary disc 1 is provided with a plurality of mould assemblies, and the mould assembly includes first radiating block 2, lower mould 3, upper mould 4 and second radiating block 5, the inside of first radiating block 2 is fixedly connected with the outside of lower mould 3, the inside of second radiating block 5 is fixedly connected with the outside of upper mould 4, and the inside of first radiating block 2 and second radiating block 5 is all provided with oil channel, the bottom of first radiating block 2 is fixedly connected with the top of rotary disc 1, and the inside of the top of upper mould 4 is fixedly connected with pouring pipe 6, can utilize pouring pipe 6 to be convenient for pouring raw materials to the inside of mould assembly.

[0022] In addition, the first heat dissipation block 2 is provided with an oil change assembly on both sides, the oil change assembly comprises a first connecting pipe 7, one end of the first connecting pipe 7 is fixedly connected with the side of the first heat dissipation block 2, and the other end of the first connecting pipe 7 is fixedly connected with a sleeve 8, the inside of the top end of the sleeve 8 is fixedly installed with a sealing sleeve 9, the inside of the sealing sleeve 9 is slidably connected with an extension rod 10, the bottom end of the extension rod 10 is fixedly connected with a piston 14, the outside of the piston 14 is slidably connected with the inner wall of the sleeve 8, the side of the sleeve 8 is fixedly connected with a fourth connecting pipe 16, the inside of the extension rod 10 is hollow, the outside of the bottom end of the extension rod 10 is provided with an oil outlet hole 11, one side of the top of the extension rod 10 is fixedly connected with a second connecting pipe 12, and the other side of the top of the extension rod 10 is fixedly connected with a third connecting pipe 13, one end of the third connecting pipe 13 is fixedly connected with the side of the second heat dissipation block 5, the outside of the second connecting pipe 12 and the fourth connecting pipe 16 is fixedly installed with a solenoid valve, the fourth connecting pipe 16 is in communication with the oil channel in the sleeve 8, the first connecting pipe 7 and the first heat dissipation block 2, and the second connecting pipe 12 is in communication with the oil channel in the extension rod 10, the third connecting pipe 13 and the second heat dissipation block 5.

[0023] When the equipment receives the mold closing instruction, the solenoid valve outside the second connecting pipe 12 is opened, the low-temperature oil enters the hollow extension rod 10 through the second connecting pipe 12, and then flows into the inner cavity of the sleeve 8 through the oil outlet hole 11 at the bottom end of the extension rod 10; the oil pushes the piston 14 to slide downward along the inner wall of the sleeve 8, the piston 14 drives the extension rod 10 to move downward, the extension rod 10 pulls the second heat dissipation block 5 to move downward through the third connecting pipe 13, so that the upper mold 4 and the lower mold 3 are accurately matched to complete mold closing; when mold opening is needed, the program switches the state of the solenoid valve, the solenoid valve of the fourth connecting pipe 16 is opened, the oil enters the inner cavity of the sleeve 8 through the fourth connecting pipe 16 to push the piston 14 to move upward, drives the extension rod 10 to move upward, and then pulls the second heat dissipation block 5 to move upward, so that the mold is separated. In this way, not only the labor problem of manual mold opening and closing is solved, the labor intensity of workers is reduced, but also the problem of manual alignment deviation is avoided.

[0024] In addition, the side of the inner cavity of the sleeve 8 is fixedly connected with a first limiting block 17, the outside of the extension rod 10 is fixedly connected with a second limiting block 18, the outside of the second limiting block 18 is slidably connected with the inner wall of the sleeve 8, and the second limiting block 18 is located above the oil outlet hole 11, the outside of the piston 14 is sleeved with a sealing ring 15, and the outside of the sealing ring 15 is slidably connected with the inner wall of the sleeve 8. The first limiting block 17 can limit the position of the piston 14 moving downward, the second limiting block 18 can limit the position of the extension rod 10 moving upward, so as to avoid the problem of oil leakage caused by the oil outlet hole 11 moving out of the outside of the sleeve 8, and the sealing ring 15 can improve the sealing performance of the piston 14.

[0025] Finally, after the mold is closed and the pouring pipe 6 starts pouring, the oil circuit system remains in a low-flow circulation state, and the low-temperature oil continuously enters the telescopic rod 10 through the second connecting pipe 12. Part of the oil is used to maintain the mold closing pressure, and the other part of the oil flows into the third connecting pipe 13. The oil then enters the oil channel inside the second heat sink 5. At this time, the electromagnetic valve outside the fourth connecting pipe 16 can also be opened, so that low-flow, low-temperature oil enters the inside of the sleeve 8 from the fourth connecting pipe 16. At this time, the oil pressure entering the fourth connecting pipe 16 is less than the oil pressure entering the second connecting pipe 12, which can prevent the piston 14 from being lifted and maintain the mold closing pressure. Then, through the first connecting pipe 7, the oil enters the oil channel inside the second heat sink 5, which can fully contact the surface of the lower mold 3 and the upper mold 4, absorb the heat generated by the pouring of the lower mold 3 and the upper mold 4, and then return to the cooling system through the second connecting pipe 12 and the fourth connecting pipe 16 on the other side of the mold assembly to cool down. The cooled oil enters the circulation again to achieve continuous heat dissipation.

[0026] Working principle: After receiving the clamping instruction, the electromagnetic valve outside the second connecting pipe 12 is opened, the low-temperature oil enters the hollow structure of the telescopic rod 10 through the second connecting pipe 12, and then flows into the sleeve 8 through the oil outlet hole 11 at the bottom of the telescopic rod 10. The oil pushes the piston 14 to slide downward along the inner wall in the sleeve 8, and the first limiting block 17 on the side of the sleeve 8 cavity limits the downward movement of the piston 14 to avoid excessive movement. The piston 14 drives the telescopic rod 10 to move downward synchronously, and the second limiting block 18 outside the telescopic rod 10 slides with it and is always located above the oil outlet hole 11 to prevent the oil outlet hole 11 from moving out of the sleeve 8 and causing oil leakage. Then the telescopic rod 10 pulls the second heat sink 5 downward through the third connecting pipe 13, and finally the upper mold 4 connected with the second heat sink 5 is precisely matched with the lower mold 3 connected with the first heat sink 2 to complete the clamping. The sealing ring 15 outside the piston 14 ensures the oil seal to avoid pressure leakage; after the clamping is completed, the pouring pipe 6 at the top of the upper mold 4 pours the raw material into the mold assembly, and the oil circuit system keeps low-flow circulation at the same time. The low-temperature oil continuously enters the telescopic rod 10 through the second connecting pipe 12, part of the oil remains in the telescopic rod 10 and the sleeve 8 to maintain the pressure required for clamping, and the other part of the oil flows into the third connecting pipe 13 and finally enters the oil channel in the second heat sink 5. By opening the electromagnetic valve outside the fourth connecting pipe 16 (the oil pressure flowing into the fourth connecting pipe 16 at this time is lower than that of the second connecting pipe 12, which ensures that the piston 14 is not lifted and the clamping state is stable), the oil enters the sleeve 8 and then flows into the oil channel in the first heat sink 2 through the first connecting pipe 7. The low-temperature oil in the oil channel fully contacts the surfaces of the upper mold 4 and the lower mold 3 to absorb the heat generated by the pouring of the mold. The oil after heat absorption returns to the cooling system through the second connecting pipe 12 and the fourth connecting pipe 16 on the other side of the mold assembly, and after being cooled, it reenters the oil circuit to realize continuous heat dissipation of the mold. After pouring and heat dissipation are completed, the equipment receives the opening instruction, the program switches the state of the electromagnetic valve, the electromagnetic valve outside the fourth connecting pipe 16 is opened, the low-temperature oil enters the sleeve 8 cavity through the fourth connecting pipe 16 and pushes the piston 14 to slide upward along the inner wall, the piston 14 drives the telescopic rod 10 to move upward synchronously, the second limiting block 18 limits the upward movement of the telescopic rod 10 to avoid excessive movement, and the telescopic rod 10 pulls the second heat sink 5 and the upper mold 4 upward through the third connecting pipe 13, while the first heat sink 2 and the lower mold 3 remain fixed. The mold is separated to complete the opening.

Claims

1. Automatic oil change system for a disc injection molding machine, comprising a rotating disc (1), characterized in that: The top of the rotating disc (1) is provided with a plurality of mold assemblies, the mold assemblies include a first heat dissipation block (2), a lower mold (3), an upper mold (4) and a second heat dissipation block (5), the inside of the first heat dissipation block (2) is fixedly connected with the outside of the lower mold (3), the inside of the second heat dissipation block (5) is fixedly connected with the outside of the upper mold (4), and the inside of the first heat dissipation block (2) and the second heat dissipation block (5) are both provided with an oil channel; Both sides of the first heat dissipation block (2) are provided with an oil changing assembly, the oil changing assembly includes a first connecting pipe (7), one end of the first connecting pipe (7) is fixedly connected with the side surface of the first heat dissipation block (2), and the other end of the first connecting pipe (7) is fixedly connected with a sleeve (8), the inside of the top end of the sleeve (8) is fixedly installed with a sealing sleeve (9), the inside of the sealing sleeve (9) is slidably connected with an extension rod (10), the bottom end of the extension rod (10) is fixedly connected with a piston (14), the outside of the piston (14) is slidably connected with the inner wall of the sleeve (8), and the side surface of the sleeve (8) is fixedly connected with a fourth connecting pipe (16). The inside of the extension rod (10) is hollow, the outside of the bottom end of the extension rod (10) is provided with an oil outlet hole (11), one side of the top of the extension rod (10) is fixedly connected with a second connecting pipe (12), and the other side of the top of the extension rod (10) is fixedly connected with a third connecting pipe (13), and one end of the third connecting pipe (13) is fixedly connected with the side surface of the second heat dissipation block (5).

2. The automatic oil change system of a disc injection molding machine according to claim 1, characterized in that: The outside of the second connecting pipe (12) and the fourth connecting pipe (16) is fixedly installed with an electromagnetic valve.

3. The automatic oil change system of a disc injection molding machine according to claim 1, characterized in that: The fourth connecting pipe (16) is in communication with the oil channel in the inside of the sleeve (8), the first connecting pipe (7), the first heat dissipation block (2), the second connecting pipe (12) is in communication with the oil channel in the inside of the extension rod (10), the third connecting pipe (13) and the second heat dissipation block (5).

4. The automatic oil change system of a disc injection molding machine according to claim 1, characterized by: The side surface of the inner cavity of the sleeve (8) is fixedly connected with a first limiting block (17), the outside of the extension rod (10) is fixedly connected with a second limiting block (18), the outside of the second limiting block (18) is slidably connected with the inner wall of the sleeve (8), and the second limiting block (18) is located above the oil outlet hole (11).

5. The automatic oil change system of a disc injection molding machine according to claim 1, characterized in that: The outside of the piston (14) is sleeved with a sealing ring (15), and the outside of the sealing ring (15) is slidably connected with the inner wall of the sleeve (8).

6. The automatic oil change system of a disc injection molding machine according to claim 1, characterized by: The bottom of the first heat dissipation block (2) is fixedly connected with the top of the rotating disc (1), and the inside of the top end of the upper mold (4) is fixedly connected with a pouring pipe (6).

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