Hydraulic device with energy-saving effect for injection molding machine

Abstract

The utility model relates to the technical field of hydraulic devices of injection molding machines, in particular to an energy-saving hydraulic device for an injection molding machine, which comprises a mounting plate, one end of the mounting plate is fixedly connected with a hydraulic cylinder, and a telescopic rod of the hydraulic cylinder is in clearance fit with the inner wall of the mounting plate. Through cooperation of a mounting plate, a hydraulic cylinder, a plate body, a sliding rod, a sliding block, a shell, an electric valve, a curved pipe, a pipe body and a lubricating structure, the sliding rod moves left and right on the inner wall of the sliding block and drives a ball to roll, friction force can be reduced through arrangement of the ball, meanwhile, a sponge block adsorbs lubricating oil, and an electric push rod drives a pressing plate to move inwards; and lubricating oil in the sponge ring is extruded out and falls on the balls, so that the lubricating effect is achieved, the friction force is further reduced, the friction force between the sliding block and the sliding rod is reduced, the output power provided by an external hydraulic pump to the hydraulic cylinder is reduced when the same moving work is carried out, and the energy-saving effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic devices for injection molding machines, in particular to a hydraulic device for injection molding machines with energy-saving effect. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal, and all-electric types. When the movable mold in the injection molding machine moves, it often requires a hydraulic device to drive it.

[0003] There is an energy-saving hydraulic device controlled by a servo motor for an injection molding machine (application number: 201920057306.9). The hydraulic cylinder and the hydraulic rod are matched to make the demolding process of the plastic part after the injection molding is completed slowly, so as to avoid the change of the mold shape of the mold molded in the mold body. It is easy to use and has high reliability. It reduces the cost of the injection molding mold of the injection molding machine, thereby saving energy. The above-mentioned problem still exists. When the injection molding machine is used for work, the movable mold in the injection molding machine needs to be driven by a hydraulic cylinder. In order to ensure the stable operation of the movable mold, it is often limited. The limit effect is achieved through the cooperation between the slider and the slide bar. When the slider and the slide bar slide, a certain friction is often generated. The friction between the slider and the slide bar increases, and then when performing the same moving work, the output power of the external hydraulic pump to the hydraulic cylinder increases, and the energy-saving effect is poor. When the staff injects the lubricating oil, it is not convenient to filter the lubricating oil. If there are impurities in the lubricating oil, it is easy to block the curved pipe and affect the circulation of the lubricating oil. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the friction between the slider and the slide rod is increased, and thus when performing the same moving work, the output power given to the hydraulic cylinder by the external hydraulic pump is increased, the energy-saving effect is poor, it is not convenient to filter the lubricating oil, and if the lubricating oil is mixed with impurities, it is easy to block the curved pipe and affect the circulation of the lubricating oil. A hydraulic device for an injection molding machine with energy-saving effect is proposed.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hydraulic device for an injection molding machine with energy-saving effect is designed, comprising a mounting plate, one end of the mounting plate is fixedly connected to a hydraulic cylinder, a telescopic rod of the hydraulic cylinder is clearance-matched with an inner wall of the mounting plate, the telescopic rod of the hydraulic cylinder is fixedly connected to a plate body, one end of the plate body is fixedly connected to a movable mold, one end of the movable mold is fitted with a mold, the other end of the plate body is fixedly connected to a sliding rod on the outside, one side of the outer wall of the sliding rod is clearance-matched with an inner wall of one side of the mounting plate, one side of the outer wall of the sliding rod is clearance-matched with a sliding block, one end of the sliding block is fixedly connected to the outside of one end of the mounting plate, a tube body is provided on one side of the sliding block, a lubrication structure is provided on one side of the sliding rod, and a filtering structure is provided on one side of the tube body.

[0007] Preferably, the lubrication structure includes a ball, one end of the ball is fitted with one side of the outer wall of the sliding rod, one side of the outer wall of the ball is slidably engaged with a groove at one end of the inner wall of the sliding block, one side of the ball is provided with a sponge ring, the inner wall of the sponge ring is fixedly connected to the inner wall of the sliding block, one end of the sponge ring is fitted with a rubber sleeve, the inner wall of the rubber sleeve is fixedly connected with a pressure plate, one end of the pressure plate is fixedly connected to the telescopic rod of the electric push rod, the telescopic rod of the electric push rod is clearance-matched with the inner wall of one end of the sliding block, and one end of the electric push rod is fixedly connected to one end of the sliding block.

[0008] Preferably, an electric valve is fixedly connected to an upper inner wall of one side of the slider, a curved pipe is fixedly connected to one end of the electric valve, and an upper outer wall of the curved pipe is fixedly connected to the bottom inner wall of the tube body.

[0009] Preferably, a piston is threadedly connected to the top inner wall of the tube body.

[0010] Preferably, one end of the slider is fixedly connected to a housing.

[0011] Preferably, the filtering structure includes an outer shell, one end of the outer shell is fixedly connected to an upper side of a tube body, a straight block is provided in a gap in an inner wall at one end of the outer shell, a filter is fixedly connected to one end of the straight block, one side of an outer wall of the filter is gapped with an inner wall at an upper side of a tube body, a plug rod is provided in a gap in an inner wall at the bottom of the straight block, the lower side of an outer wall of the plug rod is gapped with an inner wall at the bottom of the outer shell, a spring is provided in a gap at the lower side of the outer wall of the plug rod, and the upper and lower ends of the spring are respectively fixedly connected to the upper side of the outer wall of the plug rod and the bottom of the inner wall of the outer shell.

[0012] The utility model proposes a hydraulic device for an injection molding machine with energy-saving effect, and its beneficial effect lies in: through the cooperation of the mounting plate, the hydraulic cylinder, the plate body, the sliding rod, the slider, the shell, the electric valve, the curved pipe, the tube body and the lubricating structure, the device can be moved left and right on the inner wall of the slider through the sliding rod when in use, the sliding rod drives the ball to roll, the setting of the ball can reduce the friction, and at the same time the sponge block absorbs the lubricating oil, the electric push rod drives the pressure plate to move inward, the pressure plate drives the rubber sleeve to move inward, the rubber sleeve squeezes the sponge ring, and then the lubricating oil in the sponge ring is squeezed out and falls on the ball, so as to achieve the lubrication effect, further reduce the friction, reduce the friction between the slider and the sliding rod, and then reduce the output power of the external hydraulic pump to the hydraulic cylinder when performing the same moving work, so as to improve the energy-saving effect;

[0013] Through the cooperation of the tube body and the filtering structure, when the device is in use, the filter can be inserted into the inner wall of the tube body, and then the straight block can be inserted into the inner wall of the shell. The spring drives the insertion rod to move upward, so that the insertion rod is inserted into the groove of the straight block, thereby fixing the filter, and injecting lubricating oil from the top of the tube body. Then the filter can filter impurities in the lubricating oil, which is convenient for filtering the lubricating oil and avoids clogging the curved pipe if impurities are mixed in the lubricating oil, thereby affecting the circulation of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the mounting plate, hydraulic cylinder and plate structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the electric push rod, the pressure plate and the rubber sleeve of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the sponge ring, ball bearing and slider of the utility model;

[0018] Figure 5 This is a schematic diagram of the filter screen, tube body and piston structure of the utility model;

[0019] Figure 6 It is a schematic diagram of the curved plate, block and bolt structure of the utility model.

[0020] In the figure: 1. mounting plate, 2. lubrication structure, 2a1. electric push rod, 2a2. sponge ring, 2a3. ball, 2a4. pressure plate, 2a5. rubber sleeve, 2b1. curved plate, 2b2. block, 2b3. bolt, 3. filtering structure, 301. housing, 302. filter screen, 303. straight block, 304. plug rod, 305. spring, 4. hydraulic cylinder, 5. plate, 6. movable mold, 7. mold, 8. slide rod, 9. slide block, 10. housing, 11. electric valve, 12. curved pipe, 13. pipe body, 14. piston. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Embodiment 1:

[0023] See attached Figure 1-6 : In the present embodiment, a hydraulic device for an injection molding machine with energy-saving effect comprises a mounting plate 1, one end of the mounting plate 1 is fixedly connected with a hydraulic cylinder 4, the hydraulic cylinder 4 is connected to an external hydraulic pump, the telescopic rod of the hydraulic cylinder 4 is gapped with the inner wall of the mounting plate 1, the telescopic rod of the hydraulic cylinder 4 is fixedly connected with a plate body 5, one end of the plate body 5 is fixedly connected with a movable mold 6, one end of the movable mold 6 is fitted with a mold 7, the other end of the plate body 5 is fixedly connected with a slide bar 8 on the outside, one side of the outer wall of the slide bar 8 is gapped with the inner wall of one side of the mounting plate 1, one side of the outer wall of the slide bar 8 is gapped with a slider 9, one end of the slider 9 is fixedly connected to the outside of one end of the mounting plate 1, a tube body 13 is provided on one side of the slider 9, and an electric Valve 11. The model of the electric valve 11 is determined according to the actual usage. One end of the electric valve 11 is fixedly connected to a curved tube 12. The upper outer wall of the curved tube 12 is fixedly connected to the bottom inner wall of the tube body 13. The top inner wall of the tube body 13 is threadedly connected to a piston 14. One end of the slider 9 is fixedly connected to a shell 10. A lubrication structure 2 is provided on one side of the slide rod 8. A filtering structure 3 is provided on one side of the tube body 13. The lubrication structure 2 reduces the friction between the slider 9 and the slide rod 8, thereby reducing the output power of the external hydraulic pump to the hydraulic cylinder 4 when performing the same moving work, thereby improving the energy-saving effect. The filtering structure 3 is convenient for filtering the lubricating oil to avoid impurities mixed in the lubricating oil clogging the curved tube 12 and affecting the circulation of the lubricating oil.

[0024] The lubrication structure 2 includes a ball 2a3, one end of which is fitted with one side of the outer wall of the slide rod 8, and one side of the outer wall of the ball 2a3 is slidably engaged with a groove at one end of the inner wall of the slider 9. When the ball 2a3 is subjected to force, it can roll in the groove at one end of the inner wall of the slider 9. A sponge ring 2a2 is provided on one side of the ball 2a3, and the sponge ring 2a2 can absorb lubricating oil. The inner wall of the sponge ring 2a2 is fixedly connected to the inner wall of the slider 9. A rubber sleeve 2a5 is fitted on one end of the sponge ring 2a2, and the rubber sleeve 2a5 plays a sealing role. The inner wall of the rubber sleeve 2a5 is fixedly connected with a pressure plate 2a4, one end of the pressure plate 2a4 is fixedly connected to the telescopic rod of the electric push rod 2a1, the model of the electric push rod 2a1 is determined according to the actual usage, the telescopic rod of the electric push rod 2a1 is clearance-matched with the inner wall of one end of the slider 9, one end of the electric push rod 2a1 is fixedly connected to one end of the slider 9, thereby reducing the friction between the slider 9 and the slide rod 8, and then when performing the same moving work, reducing the output power of the external hydraulic pump to the hydraulic cylinder 4, thereby improving the energy-saving effect.

[0025] The filtering structure 3 includes a shell 301, one end of which is fixedly connected to the upper side of the tube body 13, a straight block 303 is fitted in the inner wall gap at one end of the shell 301, and a filter screen 302 is fixedly connected to one end of the straight block 303. The material and mesh number of the filter screen 302 are determined according to actual usage conditions. One side of the outer wall of the filter screen 302 is fitted with the inner wall gap at the upper side of the tube body 13, and a plug rod 304 is fitted in the bottom inner wall gap of the straight block 303. The lower part of the outer wall of the plug rod 304 is fitted with the bottom inner wall gap of the shell 301, and a spring 305 is fitted in the lower gap of the outer wall of the plug rod 304. The spring 305 gives the plug rod 304 an upward force. The upper and lower ends of the spring 305 are respectively fixedly connected to the upper part of the outer wall of the plug rod 304 and the bottom of the inner wall of the shell 301, so as to facilitate filtering of the lubricating oil and prevent the lubricating oil from being mixed with impurities and clogging the curved pipe 12, thereby affecting the circulation of the lubricating oil.

[0026] Working principle:

[0027] During injection molding:

[0028] The hydraulic cylinder 4 is driven by an external hydraulic pump to work, and the hydraulic cylinder 4 drives the plate body 5 to move rightward, and the plate body 5 drives the movable mold 6 to move rightward, so that the movable mold 6 fits with the mold 7, and the external raw material is injected into the mold cavity formed by the movable mold 6 and the mold 7, and the injection molding work is completed after the raw material is cooled. When the plate body 5 moves, the plate body 5 drives the slide bar 8 to move on the inner wall of the slide block 9, and the slide bar 8 makes the ball 2a3 roll, thereby reducing the friction;

[0029] When lubricating:

[0030] Insert the filter 302 into the inner wall of the tube body 13, and then insert the straight block 303 into the inner wall of the shell 301. The spring 305 drives the insertion rod 304 to move upward, so that the insertion rod 304 is inserted into the groove of the straight block 303, thereby fixing the filter 302. Remove the piston 14, inject lubricating oil into the tube body 13, filter the lubricating oil, open the electric valve 11, and allow the lubricating oil to enter the inner wall of the slider 9. The sponge ring 2a2 absorbs the lubricating oil, closes the electric valve 11, and the electric push rod 2a1 starts to work. The electric push rod 2a1 drives the pressure plate 2a4 to move, and the pressure plate 2a4 drives the rubber sleeve 2a5 to move. The rubber sleeve 2a5 squeezes the sponge ring 2a2, and then the lubricating oil in the sponge ring 2a2 passes through the internal through hole of the slider 9 and falls on the outer wall of the ball 2a3, thereby achieving lubrication work, further reducing friction, and thereby reducing the output power of the external hydraulic pump to the hydraulic cylinder 4, thereby improving the energy saving effect.

[0031] Embodiment 2:

[0032] See attached Figure 1-6 In the present embodiment, a hydraulic device for an injection molding machine is provided, which has an energy-saving effect, wherein the lubrication structure 2 may further include a curved plate 2b1, one end of the curved plate 2b1 being fixedly connected to the lower side of a plate body 5, a block 2b2 being fitted in the inner wall gap of the curved plate 2b1, a rear end of the block 2b2 being fixedly connected to one side of a front end face of a movable mold 6, and an inner wall of one end of the block 2b2 being threadedly connected to an inner wall of one end of the curved plate 2b1 through a bolt 2b3.

[0033] Working principle:

[0034] Insert the block 2b2 into the inner wall of the curved plate 2b1, and insert the bolt 2b3 into the inner wall of one end of the curved plate 2b1. The inner wall of one end of the curved plate 2b1 is an inclined groove, which can guide the insertion of the bolt 2b3 and facilitate the operation of the staff. Turn the bolt 2b3 to make the bolt 2b3 enter the inner wall of the block 2b2, and then complete the installation of the movable mold 6. The operation is simple.

[0035] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A hydraulic device for an injection molding machine having an energy-saving effect, comprising a mounting plate (1), characterized in that: One end of the mounting plate (1) is fixedly connected to a hydraulic cylinder (4), the telescopic rod of the hydraulic cylinder (4) is gap-matched with the inner wall of the mounting plate (1), the telescopic rod of the hydraulic cylinder (4) is fixedly connected to a plate body (5), one end of the plate body (5) is fixedly connected to a movable mold (6), one end of the movable mold (6) is fitted with a mold (7), the other end of the plate body (5) is fixedly connected to a sliding rod (8) on the outside, one side of the outer wall of the sliding rod (8) is gap-matched with the inner wall of one side of the mounting plate (1), one side of the outer wall of the sliding rod (8) is gap-matched with a sliding block (9), one end of the sliding block (9) is fixedly connected to the outside of one end of the mounting plate (1), one side of the sliding block (9) is provided with a tube body (13), one side of the sliding rod (8) is provided with a lubrication structure (2), and one side of the tube body (13) is provided with a filtering structure (3).

2. The hydraulic device for an injection molding machine with energy-saving effect according to claim 1, characterized in that: The lubrication structure (2) comprises a ball (2a3), one end of which is fitted with one side of the outer wall of the sliding rod (8), one side of which is slidably engaged with a groove at one end of the inner wall of the sliding block (9), one side of the ball (2a3) is provided with a sponge ring (2a2), the inner wall of the sponge ring (2a2) is fixedly connected to the inner wall of the sliding block (9), one end of the sponge ring (2a2) is fitted with a rubber sleeve (2a5), the inner wall of the rubber sleeve (2a5) is fixedly connected with a pressure plate (2a4), one end of the pressure plate (2a4) is fixedly connected to the telescopic rod of the electric push rod (2a1), the telescopic rod of the electric push rod (2a1) is clearance-matched with the inner wall of one end of the sliding block (9), and one end of the electric push rod (2a1) is fixedly connected to one end of the sliding block (9).

3. The hydraulic device for an injection molding machine with energy-saving effect according to claim 1, characterized in that: An electric valve (11) is fixedly connected to the inner wall above one side of the slider (9), a curved pipe (12) is fixedly connected to one end of the electric valve (11), and the upper part of the outer wall of the curved pipe (12) is fixedly connected to the bottom inner wall of the pipe body (13).

4. The hydraulic device for an injection molding machine with energy-saving effect according to claim 1, characterized in that: The top inner wall of the tube body (13) is threadedly connected with a piston (14).

5. The hydraulic device for an injection molding machine with energy-saving effect according to claim 1, characterized in that: One end of the slider (9) is fixedly connected to a housing (10).

6. The hydraulic device for an injection molding machine with energy-saving effect according to claim 1, characterized in that: The filtering structure (3) comprises a shell (301), one end of the shell (301) is fixedly connected to the upper side of one side of the tube body (13), a straight block (303) is provided in the inner wall gap of one end of the shell (301), a filter screen (302) is fixedly connected to one end of the straight block (303), one side of the outer wall of the filter screen (302) is in the inner wall gap of the upper side of one side of the tube body (13), a plug rod (304) is provided in the inner wall gap of the bottom of the straight block (303), the lower side of the outer wall of the plug rod (304) is in the inner wall gap of the bottom of the shell (301), a spring (305) is provided in the outer wall gap of the lower side of the plug rod (304), and the upper and lower ends of the spring (305) are respectively fixedly connected to the upper side of the outer wall of the plug rod (304) and the lower side of the inner wall of the shell (301).

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