Energy-saving hydraulic device for injection molding machine

Abstract

The utility model relates to the technical field of hydraulic devices, in particular to an energy-saving hydraulic device for an injection molding machine, which comprises a hydraulic device body, a hard hydraulic pipe used in the hydraulic device body and a mounting seat, and the mounting seat is arranged in the hard hydraulic pipe and communicated with the hard hydraulic pipe. The fixing seat is in threaded connection with the interior of the mounting seat; the energy-saving hydraulic device for the injection molding machine comprises a hard hydraulic pipe, a fixed seat arranged on the hard hydraulic pipe, a multi-section impurity collecting unit arranged in the hard hydraulic pipe and connected with the fixed seat, and a switching type anti-splashing unit arranged in the hard hydraulic pipe. By means of the multi-section type impurity collecting unit and the switching type anti-splashing unit, metal impurities in hydraulic oil flowing through the hard hydraulic pipe can be adsorbed, through adjustment of the multi-section structure, the metal impurities can be cleaned, and the situation that the hydraulic oil in the hard hydraulic pipe is splashed out when the cleaned metal impurities are taken out is prevented.

Description

Technical Field

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

[0002] Injection molding machines are the main production equipment in the plastic products industry. Currently, the most commonly used ones are hydraulically driven ones, that is, the mold closing, injection, pressure holding, cooling, mold opening and ejection of the injection molding machine are controlled by hydraulic devices. In order to reduce energy waste, accumulators are generally added to the hydraulic devices to absorb the pressure generated when the system is started and stopped to ensure the stability and energy saving of the system. The rubber diaphragm inside the accumulator is in direct contact with the hydraulic oil. This part of the metal impurities may scratch the diaphragm, reducing the service life of the diaphragm. As a result, some staff will design a structure to remove metal impurities at the front pipe of the accumulator.

[0003] However, we found in actual use that when taking metal impurities out of the pipeline, the hydraulic oil would splash due to the high pressure in the pipe, which not only wastes the hydraulic oil but also increases the cleaning work of the staff. For this reason, we proposed an energy-saving hydraulic device for injection molding machines. Utility Model Content

[0004] A technical problem to be solved by the present application is: how to design an energy-saving hydraulic device that can prevent splashing when removing metal impurities in a pipeline.

[0005] In order to solve the above technical problems, the embodiment of the present application provides an energy-saving hydraulic device for an injection molding machine, including a hydraulic device body and a hard hydraulic pipe used in the hydraulic device body, and also including

[0006] A mounting seat, the mounting seat is disposed in the hard hydraulic pipe and is in communication with the hard hydraulic pipe;

[0007] A fixing seat, the fixing seat being threadedly connected in the mounting seat;

[0008] A multi-stage impurity collecting unit, which is arranged inside the hard hydraulic pipe and connected to a fixing seat, and is used to absorb metal impurities in the hydraulic oil flowing through the hard hydraulic pipe, and can clean the metal impurities through the adjustment of the multi-stage structure;

[0009] A switchable anti-splash unit is arranged inside a hard hydraulic pipe and is used in conjunction with a multi-section collecting unit to prevent hydraulic oil in the hard hydraulic pipe from splashing out when removing cleaned metal impurities.

[0010] In some embodiments, the multi-stage impurity collection unit includes a fixed ring arranged at the bottom of a fixed seat, an end shift ring is arranged on the inner side of the fixed ring, and multiple intermediate shift rings are arranged between the fixed ring and the end shift ring. The intermediate shift ring close to the fixed ring is slidably connected to the fixed ring, the intermediate shift ring close to the end shift ring is slidably connected to the end shift ring, and the intermediate shift rings located in the middle are slidably connected to each other, magnetic plates are arranged on the outer sides of the intermediate shift rings and the end shift rings, a control component is arranged on the fixed seat, which is used to drive the multiple intermediate shift rings and the end shift rings to expand and retract, and a collecting component is arranged in the hard hydraulic pipe, which is used to collect metal impurities cleaned by the magnetic plate.

[0011] In some embodiments, the control member includes a screw rod threadedly connected to a fixing seat, a positioning block is provided on the inner side of the terminal displacement ring, and the bottom of the screw rod is rotatably connected to the positioning block.

[0012] In some embodiments, the collecting member includes a collecting tube disposed at the bottom of the positioning block, and the collecting tube is a funnel-shaped structure.

[0013] In some embodiments, the switchable anti-splash unit includes an impurity removal channel opened in the middle of the fixed seat and the positioning block, a threaded hole is opened on the fixed seat, the threaded hole and the impurity removal channel are coaxially arranged, and the diameter of the threaded hole is larger than the diameter of the impurity removal channel, a plug is threadedly connected in the threaded hole, and an anti-splash part is arranged between the impurity removal channel on the positioning block and the collecting pipe, which is used to prevent the hydraulic oil from splashing out when the metal impurities in the collecting pipe are taken out, and a connecting part is arranged between the plug and the anti-splash part, which is used to cooperate with the anti-splash part to remove the metal impurities.

[0014] In some embodiments, the collecting tube includes a reducing portion connected to the positioning block and a collecting portion movably arranged at the bottom of the reducing portion, the splash prevention part includes a blocking column movably arranged in a debris removal channel located on the positioning block, a collecting seat is arranged at the bottom of the blocking column, the collecting seat is arranged inside the collecting portion, and the two are interference fit, a separation hole is provided at the bottom of the debris removal channel located on the positioning block, the collecting portion is interference fit with the separation hole, and the friction force between the collecting seat and the collecting portion is greater than the friction force between the collecting portion and the separation hole, the reducing portion is provided with a protruding ear, and the collecting portion is provided with a sliding groove used in conjunction with the protruding ear.

[0015] In some embodiments, the connecting member includes a polygonal telescopic rod arranged between the plug and the blocking column.

[0016] In some embodiments, the connecting member includes an insertion rod disposed on the plug, and a socket for use with the insertion rod is disposed on the top of the blocking column.

[0017] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses an energy-saving hydraulic device for an injection molding machine, which has the following beneficial effects:

[0018] When the staff is cleaning the metal impurities, the multi-stage impurity collection unit and the switchable anti-splashing unit can be used to absorb the metal impurities in the hydraulic oil flowing through the hard hydraulic pipe. By adjusting the multi-stage structure, the metal impurities can be cleaned to prevent the hydraulic oil in the hard hydraulic pipe from splashing out when the cleaned metal impurities are taken out. This not only avoids the waste of hydraulic oil, but also reduces the cleaning work of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall hydraulic system structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the hard hydraulic pipe and its structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 Schematic diagram of the local structure;

[0023] Figure 4 For this utility model Figure 3 Schematic diagram of the local cross-section structure;

[0024] Figure 5 For this utility model Figure 2 Another schematic diagram of the cross-sectional structure;

[0025] Figure 6 For this utility model Figure 5 Schematic diagram of the enlarged structure of the middle A area;

[0026] Figure 7 This is a schematic diagram of the structure of the utility model after the collecting seat and the collecting part are separated;

[0027] Figure 8 This is a schematic structural diagram of Example 2 of the utility model.

[0028] In the figure: 1. Hydraulic device body; 2. Hard hydraulic pipe; 3. Multi-section collecting unit; 31. Fixed ring; 32. End shift ring; 33. Middle shift ring; 34. Magnetic plate; 4. Control part; 41. Screw; 42. Positioning block; 5. Collecting part; 6. Collecting pipe; 61. Variable diameter part; 62. Collecting part; 7. Switchable anti-splashing unit; 71. Discharge channel; 72. Plug; 8. Anti-splashing part; 81. Blocking column; 82. Collecting seat; 83. Separation hole; 9. Connecting part; 91. Polygonal telescopic rod; 92. Insert rod; 93. Socket; 10. Mounting seat; 11. Fixed seat. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] See also Figure 1-7 The utility model provides a technical solution: an energy-saving hydraulic device for an injection molding machine, comprising a hydraulic device body 1 and a hard hydraulic pipe 2 used in the hydraulic device body 1. The hydraulic device body 1 and the hard hydraulic pipe 2 are both common existing structures, and no further details are given here. The hard hydraulic pipe 2 is generally arranged at the front end of the accumulator inside the hydraulic device body 1, and also includes

[0032] A mounting seat 10, the mounting seat 10 is disposed in the hard hydraulic pipe 2 and is in communication with the hard hydraulic pipe 2;

[0033] The fixing seat 11 is threadedly connected in the mounting seat 10. Before use, the fixing seat 11 is connected with the mounting seat 10, that is, the structure in the multi-stage collecting unit 3 is placed in the hard hydraulic pipe 2;

[0034] The multi-stage impurity collecting unit 3 is arranged inside the hard hydraulic pipe 2 and connected to the fixing seat 11, and is used to absorb the metal impurities in the hydraulic oil flowing through the hard hydraulic pipe 2, and can clean the metal impurities through the adjustment of the multi-stage structure;

[0035] The multi-stage collecting unit 3 includes a fixed ring 31 arranged at the bottom of the fixed seat 11, an end shift ring 32 is arranged inside the fixed ring 31, and a plurality of intermediate shift rings 33 are arranged between the fixed ring 31 and the end shift ring 32. The intermediate shift ring 33 close to the fixed ring 31 is slidably connected to the fixed ring 31, and the intermediate shift ring 33 close to the end shift ring 32 is slidably connected to the end shift ring 32, and the intermediate shift rings 33 located in the middle are slidably connected to each other, and magnetic plates 34 are arranged on the outer sides of the intermediate shift rings 33 and the end shift rings 32. A control member 4 is arranged on the fixed seat 11 for driving the plurality of intermediate shift rings 33 and the end shift rings 32 to expand and retract. A collecting member 5 is arranged in the hard hydraulic pipe 2 for collecting metal impurities cleaned by the magnetic plate 34. In this scheme, only one intermediate shift ring 33 is shown, which can be adjusted according to needs in actual use;

[0036] The control member 4 includes a screw rod 41 threadedly connected to the fixing seat 11, a positioning block 42 is arranged inside the end displacement ring 32, and the bottom of the screw rod 41 is rotatably connected to the positioning block 42;

[0037] The collecting member 5 includes a collecting pipe 6 disposed at the bottom of the positioning block 42, and the collecting pipe 6 is a funnel-shaped structure;

[0038] A switchable anti-splash unit 7 is arranged inside the hard hydraulic pipe 2 and is used in conjunction with the multi-stage collecting unit 3 to prevent the hydraulic oil in the hard hydraulic pipe 2 from splashing out when the cleaned metal impurities are taken out;

[0039] The switchable anti-splashing unit 7 includes a debris discharge channel 71 opened in the middle of the fixing seat 11 and the positioning block 42. A threaded hole is opened on the fixing seat 11. The threaded hole and the debris discharge channel 71 are coaxially arranged, and the diameter of the threaded hole is larger than the diameter of the debris discharge channel 71. This is to ensure that the blocking column 81 and the collecting seat 82 can be taken out smoothly without causing large friction with the threaded hole, which is conducive to ensuring normal blocking. A plug 72 is connected to the thread in the threaded hole. An anti-splashing member 8 is provided between the debris discharge channel 71 on the positioning block 42 and the collecting pipe 6 to prevent hydraulic oil from splashing out when the metal impurities in the collecting pipe 6 are taken out. A connecting member 9 is provided between the plug 72 and the anti-splashing member 8 to cooperate with the anti-splashing member 8 to take out the metal impurities;

[0040] The collecting pipe 6 includes a reducing portion 61 connected to the positioning block 42 and a collecting portion 62 movably arranged at the bottom of the reducing portion 61. The splash-proof member 8 includes a blocking column 81 movably arranged in the impurity removal channel 71 located on the positioning block 42. A collecting seat 82 is arranged at the bottom of the blocking column 81. The collecting seat 82 is arranged inside the collecting portion 62, and the two are interference fit. A separation hole 83 is provided at the bottom of the impurity removal channel 71 located on the positioning block 42. The collecting portion 62 and the separation hole 83 are interference fit, and the friction between the collecting seat 82 and the collecting portion 62 is greater than the friction between the collecting portion 62 and the separation hole 83. A protruding ear is provided on the reducing portion 61, and a sliding groove used in conjunction with the protruding ear is provided on the collecting portion 62.

[0041] The connecting piece 9 includes a polygonal telescopic rod 91 arranged between the plug 72 and the blocking column 81. The setting of the polygonal telescopic rod 91 ensures that the blocking column 81 can be retracted upward along with the end shift ring 32 and can rotate synchronously with the plug 72, which is beneficial to the insertion of the collecting part 62 and the separation hole 83.

[0042] When in use, the multi-stage impurity collecting unit 3 is installed in the hard hydraulic pipe 2 by installing the fixing seat 11, and the metal impurities can be adsorbed on the outer wall by the adsorption of the magnetic plate 34. When cleaning is needed, it is only necessary to rotate the screw 41 to drive the positioning block 42 to shift, and then the middle shift ring 33 and the end shift ring 32 are synchronously retracted. When retracted, the metal impurities on the outer wall will fall into the collection pipe 6 at the bottom;

[0043] When in the retracted state, the blocking column 81 always blocks the impurity removal channel 71 on the positioning block 42. The plug 72 is rotated to remove the blocking column 81 and the collecting seat 82. When taking them out, the collecting seat 82 and the collecting part 62 move up synchronously. Because the friction between the collecting seat 82 and the collecting part 62 is greater than the friction between the collecting part 62 and the separation hole 83, the collecting part 62 can enter the separation hole 83, but when it reaches the bottom of the separation hole 83, it cannot continue to move up. At this time, the collecting seat 82 and the collecting part 62 are separated, and the collecting seat 82 continues to move up to remove impurities, while the collecting part 62 blocks the impurity removal channel 71 on the positioning block 42 to prevent splashing of hydraulic oil.

[0044] Example 2

[0045] See also Figure 1-8 , which is different from Example 1, the connecting member 9 includes an insert rod 92 arranged on the plug 72, and a socket 93 used in conjunction with the insert rod 92 is arranged on the top of the blocking column 81. Because in Example 1, when the plug 72 is unscrewed and the blocking column 81 is pulled, the polygonal telescopic rod 91 will automatically extend, which makes it necessary to pull the polygonal telescopic rod 91 to the longest position before taking out the collecting seat 82, which is more cumbersome.

[0046] When in use, the multi-stage impurity collecting unit 3 is installed in the hard hydraulic pipe 2 by installing the fixing seat 11, and the metal impurities can be adsorbed on the outer wall by the adsorption of the magnetic plate 34. When cleaning is needed, it is only necessary to rotate the screw 41 to drive the positioning block 42 to shift, and then the middle shift ring 33 and the end shift ring 32 are synchronously retracted. When retracted, the metal impurities on the outer wall will fall into the collection pipe 6 at the bottom;

[0047] When in the retracted state, the blocking column 81 always blocks the impurity removal channel 71 on the positioning block 42. When the end shift ring 32 is retracted to the top, the insertion rod 92 will be inserted into the insertion hole 93. Since there is a protrusion at the end of the insertion rod 92, the rotating plug 72 will be misaligned with the insertion hole 93, so that the blocking column 81 and the collecting seat 82 can be taken out. When taking them out, the collecting seat 82 and the collecting part 62 move up synchronously. Since the friction between the collecting seat 82 and the collecting part 62 is greater than the friction between the collecting part 62 and the separation hole 83, the collecting part 62 can enter the separation hole 83, but when it reaches the bottom of the separation hole 83, it cannot continue to move up. At this time, the collecting seat 82 and the collecting part 62 are separated. The collecting seat 82 continues to move up to remove impurities, and the collecting part 62 blocks the impurity removal channel 71 on the positioning block 42 to prevent the splashing of hydraulic oil.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy-saving hydraulic device for an injection molding machine, comprising a hydraulic device body (1) and a hard hydraulic pipe (2) used in the hydraulic device body (1), characterized in that: Also includes A mounting seat (10), wherein the mounting seat (10) is disposed in the hard hydraulic pipe (2) and is in communication with the hard hydraulic pipe (2); A fixing seat (11), wherein the fixing seat (11) is threadedly connected in the mounting seat (10); A multi-stage impurity collecting unit (3), which is arranged inside the hard hydraulic pipe (2) and connected to a fixing seat (11), and is used to absorb metal impurities in the hydraulic oil flowing through the hard hydraulic pipe (2), and can clean the metal impurities through the adjustment of the multi-stage structure; A switchable anti-splash unit (7), the switchable anti-splash unit (7) being arranged inside the hard hydraulic pipe (2) and used in conjunction with the multi-stage impurity collecting unit (3) to prevent the hydraulic oil in the hard hydraulic pipe (2) from splashing out when removing the cleaned metal impurities; The multi-stage miscellaneous collection unit (3) comprises a fixed ring (31) arranged at the bottom of the fixed seat (11), a terminal displacement ring (32) is arranged inside the fixed ring (31), and a plurality of intermediate displacement rings (33) are arranged between the fixed ring (31) and the terminal displacement ring (32), wherein the intermediate displacement ring (33) close to the fixed ring (31) is slidably connected to the fixed ring (31), and the intermediate displacement ring (33) close to the terminal displacement ring (32) is slidably connected to the terminal displacement ring (32) are slidably connected, and the intermediate shift rings (33) located in the middle are slidably connected to each other, magnetic plates (34) are arranged on the outside of the intermediate shift rings (33) and the terminal shift rings (32), and a control member (4) is arranged on the fixed seat (11) for driving the plurality of intermediate shift rings (33) and the terminal shift rings (32) to expand and retract, and a collecting member (5) is arranged in the hard hydraulic pipe (2) for collecting metal impurities cleaned by the magnetic plate (34).

2. The energy-saving hydraulic device for injection molding machine according to claim 1, characterized in that: The control member (4) comprises a screw rod (41) threadedly connected to a fixing seat (11); a positioning block (42) is arranged inside the terminal displacement ring (32); and the bottom of the screw rod (41) is rotatably connected to the positioning block (42).

3. The energy-saving hydraulic device for injection molding machine according to claim 2, characterized in that: The collecting member (5) comprises a collecting tube (6) arranged at the bottom of the positioning block (42); the collecting tube (6) is a funnel-shaped structure.

4. The energy-saving hydraulic device for injection molding machine according to claim 3, characterized in that: The switchable anti-splashing unit (7) comprises an impurity discharge channel (71) provided in the middle of the fixing seat (11) and the positioning block (42); a threaded hole is provided on the fixing seat (11); the threaded hole and the impurity discharge channel (71) are coaxially arranged, and the diameter of the threaded hole is larger than the diameter of the impurity discharge channel (71); a plug (72) is threadedly connected in the threaded hole; an anti-splashing member (8) is provided between the impurity discharge channel (71) on the positioning block (42) and the collecting pipe (6) for preventing hydraulic oil from splashing out when the metal impurities in the collecting pipe (6) are taken out; a connecting member (9) is provided between the plug (72) and the anti-splashing member (8) for cooperating with the anti-splashing member (8) to take out the metal impurities.

5. The energy-saving hydraulic device for injection molding machine according to claim 4, characterized in that: The collecting pipe (6) comprises a reducing portion (61) connected to the positioning block (42) and a collecting portion (62) movably arranged at the bottom of the reducing portion (61); the splash prevention member (8) comprises a blocking column (81) movably arranged in a debris removal channel (71) located on the positioning block (42); a collecting seat (82) is arranged at the bottom of the blocking column (81); the collecting seat (82) is arranged inside the collecting portion (62), and the two are interference fit; a separation hole (83) is provided at the bottom of the debris removal channel (71) located on the positioning block (42); the collecting portion (62) and the separation hole (83) are interference fit, and the friction force between the collecting seat (82) and the collecting portion (62) is greater than the friction force between the collecting portion (62) and the separation hole (83); a protruding ear is provided on the reducing portion (61), and a sliding groove used in conjunction with the protruding ear is provided on the collecting portion (62).

6. The energy-saving hydraulic device for injection molding machine according to claim 5, characterized in that: The connecting member (9) comprises a polygonal telescopic rod (91) arranged between the plug (72) and the blocking column (81).

7. The energy-saving hydraulic device for injection molding machine according to claim 6, characterized in that: The connecting member (9) comprises an insert rod (92) arranged on the plug (72), and a plug hole (93) for use with the insert rod (92) is arranged on the top of the blocking column (81).

Images