Hydraulic valve block of injection molding machine system

Abstract

The utility model relates to the technical field of hydraulic valve blocks, and discloses an injection molding machine system hydraulic valve block which comprises a valve block, a plurality of groups of circular grooves are formed in the bottom surface of the valve block at equal intervals, springs I are mounted in the grooves, the tail ends of the springs I are connected with a mounting plate, the bottom end of the valve block is connected with a cover plate, and the bottom end of the mounting plate is connected with a clamping block. The tail end of the inner wall, provided with the feeding groove, of the valve block is connected with a second spring, and the tail end of the second spring is connected with a cleaning mechanism. According to the hydraulic valve block of the injection molding machine system, when a filter screen part is blocked, a piston can be gradually pushed to move along a cover plate, so that a spring II is stretched, the area of the filter screen is increased, liquid can continuously pass through, and meanwhile, an extension plate can move along with pushing of the piston; when the piston rotates, a scraper on an unfolding plate is driven to scrape a filter screen, impurities are scraped off, at the moment, the pressure of the piston on one side of the feeding groove is reduced, a second spring is shrunk, the piston is driven to reset, full utilization of the internal space is guaranteed, and meanwhile it can be guaranteed that the piston is not prone to being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valve blocks, in particular to a hydraulic valve block for an injection molding machine system. Background Art

[0002] A hydraulic valve block is a small circuit for liquid flow, which brings together various necessary valves through the oil holes on the valve block. For example, a valve block we are using now contains a balancing valve, a pressure reducing valve, a safety valve, a check valve, a reversing valve, and a shuttle valve. By connecting the valve to the block, the direction, flow rate, and on-off of the liquid flow can be controlled.

[0003] Patent No. CN 212536295 U disclosed a hydraulic valve block, including a valve block body, a conveying mechanism, a filtering mechanism, a telescopic spring, a filter screen, a cover plate, a leather plug, a leather pad and bolts. The beneficial effect of the utility model is that by connecting a plurality of different types of hydraulic valves to the conveying mechanism on the top side of the valve block body, and connecting the external inlet and outlet pipes to the two ends of the conveying mechanism, when the liquid is conveyed, the liquid will enter the conveying mechanism after being filtered through the filter screen, which is conducive to filtering the debris inside the liquid and preventing the equipment pipeline from being blocked and damaged. At the same time, when the debris at the bottom of the filter screen is accumulated, the liquid pushes the leather plug to move away from the action of the telescopic spring, thereby increasing the area of ​​the filter screen, which is conducive to the conveying of the liquid and effectively preventing the phenomenon of the liquid being unable to flow due to the blockage of the filter screen. At the same time, by removing a plurality of bolts, the cover plate is separated from the bottom of the valve block body, which is convenient for cleaning the bottom inner side of the valve block body.

[0004] After the liquid enters the guide groove, the device will gradually push the telescopic spring and the leather plug due to pressure, thereby increasing the contact area between the filter and the liquid, thereby avoiding the clogging of the filter. However, the installation position of the spring is opposite to the position where the liquid enters. As the filter is gradually clogged, the spring is gradually compressed, and eventually the entire spring is compressed. The spring itself has a certain length. After the spring is fully compressed, the filter between the leather plug and the spring installation position cannot play a filtering role, resulting in a waste of internal space. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a hydraulic valve block for an injection molding machine system, which has the advantages of avoiding blockage and the like, and solves the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic valve block of an injection molding machine system, comprising a valve block, a plurality of discharge grooves are provided on the top of the valve block, a discharge groove is provided on the side of the valve block, a feed groove is provided on the side opposite to the valve block, a cavity is present in the valve block, a filter screen is provided at a position flush with the end of the feed groove in the cavity, a plurality of circular grooves are equidistantly provided on the bottom surface of the valve block, and a spring 1 is installed in the groove, an end of the spring 1 is connected to a mounting plate, a cover plate is connected to the bottom end of the valve block, a clamping block is connected to the end of the inner wall of the valve block with the feed groove, and a cleaning mechanism is connected to the end of the spring 2.

[0009] As a preferred technical solution of the utility model, the filter screen is a metal dense mesh structure and is coated with a corrosion-resistant coating.

[0010] As the preferred technical solution of the utility model, the spring is fixedly installed at the bottom end of the circular groove, and the outer end of the spring is in contact with the inner wall of the circular groove. The mounting plate is fixedly installed at the end of the spring, the mounting plate can slide in the circular groove, and the clamping block is rotatably connected to the bottom end of the mounting plate.

[0011] As a preferred technical solution of the utility model, there are grooves corresponding to the clamping blocks on the bottom surface of the valve block and the bottom surface of the cover plate, and the clamping blocks are made of magnetic metal.

[0012] As the preferred technical solution of the utility model, the second spring is fixedly installed on the side of the inner wall of the valve block, and the cleaning mechanism includes a piston, an extension plate, an expansion plate and a scraper head. The piston is fixedly installed on the end of the second spring, the extension plate is fixedly installed on the top of the side of the piston facing the second spring, the expansion plate is equidistantly fixed on the top of the two symmetrical end surfaces of the extension plate that are perpendicular to the top surface, and the scraper head is equidistantly fixed on the top of each extension plate.

[0013] As the preferred technical solution of the utility model, the piston and the valve block are movably connected and have sealing properties. The minimum length of the second spring should be longer than the distance between the piston and the inner wall of the valve block when the piston fits the side of the filter screen. The scraper head is a conical cone with a top diameter smaller than the aperture of the filter screen. The expansion plate does not contact the inner wall of the valve block.

[0014] Compared with the prior art, the utility model provides a hydraulic valve block for an injection molding machine system, which has the following beneficial effects:

[0015] 1. The utility model has the following advantages: when the filter screen is partially clogged, the pressure on the side of the piston connected to the feed slot increases, which gradually pushes the piston to move along the cover plate, so that the second spring is stretched, thereby increasing the area of ​​the filter screen and allowing the liquid to continue to pass through. At the same time, as the piston pushes, the extension plate moves accordingly, thereby driving the scraper head on the expansion plate to scrape the filter screen, thereby scraping off the impurities on the filter screen. At this time, the pressure on the piston on one side of the feed slot decreases, causing the second spring to contract, thereby driving the piston to reset, and so on and so forth, thereby ensuring full utilization of the internal space and ensuring that it is less likely to be clogged.

[0016] 2. When the inside of the valve block needs to be cleaned, the utility model uses external magnetic blocks to absorb the card blocks one by one, then pull them out, and rotate the card blocks to make them escape from the grooves on the valve block and the cover plate. After the rotation, the card blocks are hung on the bottom of the valve block due to a spring. At this time, the cover plate is pulled out through the groove on the cover plate to clean the inside of the valve block. After the cleaning is completed, the cover plate is covered, and the card blocks are rotated one by one, so that the spring pair tightens the card blocks, thereby closing the cover plate tightly, making it easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the full section structure of the utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the structure A of the utility model;

[0020] Figure 4 It is a partial enlarged schematic diagram of structure B of the utility model;

[0021] Figure 5 It is a bottom view schematic diagram of the structure of the utility model;

[0022] Figure 6 It is a partial enlarged schematic diagram of structure C of the utility model.

[0023] Among them: 1. valve block; 2. discharge trough; 3. discharge trough; 4. feed trough; 5. cavity; 6. filter screen; 7. cover plate; 8. mounting plate; 9. spring 1; 10. clamping block; 11. spring 2; 12. cleaning mechanism; 1201. piston; 1202. extension plate; 1203. expansion plate; 1204. scraper head. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1-6 A hydraulic valve block for an injection molding machine system includes a valve block 1. The top of the valve block 1 is provided with multiple groups of discharge grooves 2, the side of the valve block 1 is provided with a discharge groove 3, the side opposite to the valve block 1 is provided with a feed groove 4, a cavity 5 exists in the valve block 1, and a filter screen 6 is provided at a position flush with the end of the cavity 5 and the feed groove 4. The bottom surface of the valve block 1 is provided with multiple groups of circular grooves at equal intervals, and a spring 9 is installed in the groove, the end of the spring 9 is connected to a mounting plate 8, the bottom end of the valve block 1 is connected to a cover plate 7, the bottom end of the mounting plate 8 is connected to a clamping block 10, the end of the inner wall of the valve block 1 provided with the feed groove 4 is connected to a spring 2 11, and the end of the spring 2 11 is connected to a cleaning mechanism 12.

[0028] Furthermore, the filter screen 6 is configured as a metal dense mesh with a corrosion-resistant coating, which can ensure the long-term use of the filter screen 6. At the same time, the filter screen 6 is detachably connected to the inside of the valve block 1, and the filter screen 6 can be removed and cleaned after a long period of use.

[0029] Furthermore, when it is necessary to clean the inside of the valve block 1, the card blocks 10 are sucked one by one by external magnetic blocks and then pulled out, and the card blocks 10 are rotated to make them disengage from the grooves on the valve block 1 and the cover plate 7. After rotation, the card block 10 is hung on the bottom end of the valve block 1 due to the spring 9. At this time, the cover plate 7 is pulled out through the groove on the cover plate 7 to clean the inside of the valve block 1. After cleaning, the cover plate 7 is covered, and the card blocks 10 are rotated one by one, so that the spring 9 tightens the card blocks 10, thereby closing the cover plate 7, and at the same time, there is a sealing gasket between the cover plate 7 and the valve block 1.

[0030] Furthermore, after the liquid enters one side of the piston 1201 from the feed groove 4, the liquid will enter the cavity from the gap between the piston 1201 and the filter screen 6 and be discharged from the discharge groove 3. Part of the liquid enters the opposite side area of ​​the piston 1201 and is gradually discharged as the liquid flows in. When the filter screen 6 is partially blocked, the pressure on the side of the piston 1201 connected to the feed groove 4 increases, which will gradually push the piston 1201 to move along the cover plate 7, so that the spring 11 is stretched, thereby increasing the area of ​​the filter screen 6, allowing the liquid to continue to pass through. At the same time, as the piston 1201 pushes, the extension plate 1202 will move accordingly, and then the scraper head 1204 on the expansion plate 1203 will be driven to scrape the filter 6, so that the impurities on the filter 6 are scraped off. At this time, the pressure of the piston 1201 on the side of the feed trough 4 is reduced, causing the spring 2 11 to contract, and then driving the piston 1201 to reset, and so on, allowing the scraper head 1204 to repeatedly clean the filter 6, thereby reducing the blockage of the filter 6 and ensuring that the travel of the spring 2 11 is not limited, so that the filter 6 can be fully utilized.

[0031] Furthermore, the end of the scraper head 1204 is tapered so that it can scrape impurities on the filter screen 6 well. When in use, the unfolded plate 1203 is not in contact with the valve body, which can effectively reduce the generation of friction and shear force. When no liquid is injected, a certain distance should be maintained between the piston 1201 and the edge of the filter screen 6, which can effectively ensure the rapid passage of liquid.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic valve block for an injection molding machine system, comprising a valve block (1), a plurality of discharge slots (2) are provided at the top of the valve block (1), a discharge slot (3) is provided at the side of the valve block (1), a feed slot (4) is provided at the side opposite to the valve block (1), and a cavity (5) is provided in the valve block (1), characterized in that: A filter screen (6) is provided at a position flush with the end of the cavity (5) and the feed trough (4); a plurality of groups of circular grooves are equidistantly provided on the bottom surface of the valve block (1), and a spring one (9) is installed in the groove; the end of the spring one (9) is connected to a mounting plate (8); the bottom end of the valve block (1) is connected to a cover plate (7); the bottom end of the mounting plate (8) is connected to a clamping block (10); the end of the inner wall of the valve block (1) on which the feed trough (4) is provided is connected to a spring two (11); the end of the spring two (11) is connected to a cleaning mechanism (12).

2. The hydraulic valve block of an injection molding machine system according to claim 1, characterized in that: The filter screen (6) is a metal dense mesh structure and is coated with a corrosion-resistant coating.

3. The hydraulic valve block of an injection molding machine system according to claim 1, characterized in that: The spring one (9) is fixedly mounted at the bottom end of the circular groove, and the outer end of the spring one (9) is in contact with the inner wall of the circular groove. The mounting plate (8) is fixedly mounted at the end of the spring one (9), and the mounting plate (8) can slide in the circular groove. The clamping block (10) is rotatably connected to the bottom end of the mounting plate (8).

4. The hydraulic valve block of an injection molding machine system according to claim 1, characterized in that: The bottom surface of the valve block (1) and the bottom surface of the cover plate (7) both have grooves corresponding to the clamping block (10), and the clamping block (10) is made of magnetic metal.

5. The hydraulic valve block of an injection molding machine system according to claim 1, characterized in that: The spring 2 (11) is fixedly mounted on the inner wall side of the valve block (1); the cleaning mechanism (12) comprises a piston (1201), an extension plate (1202), an expansion plate (1203) and a scraper (1204); the piston (1201) is fixedly mounted on the end of the spring 2 (11); the extension plate (1202) is fixedly mounted on the top of the side of the piston (1201) facing the spring 2 (11); the expansion plate (1203) is equidistantly fixedly mounted on the top of two symmetrical end surfaces of the extension plate (1202) that are perpendicular to the top surface; and the scraper (1204) is equidistantly fixedly mounted on the top of each extension plate (1202).

6. The hydraulic valve block of an injection molding machine system according to claim 5, characterized in that: The piston (1201) and the valve block (1) are movably connected and have sealing properties. The minimum length of the spring 2 (11) should be longer than the distance between the piston (1201) and the inner wall of the valve block (1) when the piston (1201) and the filter screen (6) are in contact with each other. The scraper head (1204) is in the form of a conical cone, and the top diameter is smaller than the aperture of the filter screen (6). The expansion plate (1203) does not contact the inner wall of the valve block (1).

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