Quick replacement mechanism for filter screen of core making machine

Abstract

The utility model discloses a core making machine filter screen quick replacement mechanism which comprises a filter cartridge and a mounting plate fixedly mounted at the lower end of the filter cartridge, a pressing shell is mounted at the lower end of the mounting plate in a clamping manner, a sealing ring is mounted in the pressing shell in a nesting manner, and a filter screen is fixedly mounted at the lower end of the pressing shell. According to the quick replacement mechanism for the filter screen of the core making machine, the pressing shell can be detached from the mounting plate, the filter screen and a sealing ring in the pressing shell can be replaced, the filtering effect of the filtering structure is guaranteed, the position of a positioning clamping pin can be detected through the arrangement of a position sensor, and the positioning clamping pin can be conveniently replaced. The installation accuracy of the pressing shell is guaranteed, meanwhile, the installation convenience of the pressing shell is improved, the locking air cylinder provides power to drive the sliding part and the limiting rod to move, the position relation between the positioning clamping pin and the limiting rod can be automatically controlled, the pressing shell can be conveniently disassembled and assembled, and the safety and convenience of replacement of the filter screen are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of core making machine replacement, in particular to a core making machine filter screen quick replacement mechanism. Background Art

[0002] The core making machine is a general term for the core shooting machine and the shell core machine. It is a device that uses the hot core box process to make coated sand shell cores. The core shooting machine needs to use a filter to filter the flowing sand during operation. After the filter has been used for a period of time, it is necessary to replace the filter to ensure the filtering effect of the core making machine. However, the existing core making machine still has certain defects in the process of replacing the filter, such as:

[0003] The utility model announcement number CN219004470U discloses a new type of fully automatic core shooting machine. By setting the filter screen as a snap-fit ​​installation structure, the removal and installation of the filter screen is more convenient. Slide blocks connected by springs are arranged on both sides of the filter screen. When installing, the slide blocks are squeezed by the inner wall of the sand shooting tube and shrink in the telescopic groove until the slide blocks slide to the snap-fit ​​groove position and automatically pop out under the action of the spring reset, so that the installation of the filter screen is completed. When disassembling, just press the button and pull the filter screen down. This disassembly method is simple to operate, quick and time-saving, and can even increase the cleaning frequency to clean the filter screen once after each use of the core shooting machine, thereby improving the molding quality of the core shooting machine.

[0004] In the above-mentioned document, during the process of disassembling and assembling the filter, the core-making machine needs to manually press two sets of buttons, and the buttons are slidably installed inside the block, and the block is located inside the sand-shooting tube, and there is a certain risk of manual entry into the machine. At the same time, during the installation of the filter, it is necessary to manually control the engagement of the engagement groove and the slider through feeling, and the movement state of the slider is in the blind spot of the visual field, and it is difficult to directly complete the engagement of the slider and the engagement groove. The space at this position of the core-making machine is small and it is not convenient for manual large-scale operations, which easily leads to a long installation time of the filter and difficulty in quick installation.

[0005] In view of the above problems, it is urgent to carry out innovative design based on the original replacement structure. Utility Model Content

[0006] The purpose of the utility model is to provide a quick replacement mechanism for the filter of a core making machine to solve the problem proposed in the above-mentioned background technology that the button is slidably installed inside the block, and the block is located inside the sand-shooting tube, and there is a certain risk of manual entry into the machine. At the same time, during the installation of the filter, it is necessary to manually control the engagement of the engagement groove and the slider through feeling, and the movement state of the slider is in the blind spot of the visual field, and it is difficult to directly complete the engagement of the slider and the engagement groove. The space at this position of the core making machine is small and it is not convenient for manual large-scale operations, which easily leads to the problem that the filter installation time is long and it is difficult to install it quickly.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick replacement mechanism for a filter screen of a core making machine, comprising a filter cartridge and a mounting plate fixedly mounted at the lower end of the filter cartridge;

[0008] A compression shell is mounted on the lower end of the mounting plate, a sealing ring is nested inside the compression shell, and a filter screen is fixedly mounted on the lower end of the compression shell.

[0009] Preferably, a fixing block is fixedly mounted on the lower end of the mounting plate, a sliding member is slidably mounted on the upper end of the fixing block, and a clamping member is clamped and mounted on the upper end of the sliding member, and the fixing blocks are located at both ends of the sliding member.

[0010] Preferably, a mounting block is fixedly installed on one side of the sliding member close to the clamping shell, and a limiting rod is fixedly installed on one end of the mounting block away from the sliding member, and two groups of the limiting rod, the mounting block and the sliding member are symmetrically arranged about the vertical center axis of the clamping shell.

[0011] Preferably, a locking cylinder is fixedly mounted on the outer side of the filter cartridge, and an output end of the locking cylinder is fixedly connected to the engaging member, and a position sensor is fixedly mounted on the upper end of the mounting plate.

[0012] Preferably, a positioning pin is fixedly mounted at an equal angle on the upper end of the compression shell, and a positioning slot is provided inside the positioning pin, and the positioning slot is engaged and connected with the limit rod.

[0013] Preferably, a movement groove is formed at the lower end of the mounting plate, a fixing rod is fixedly installed inside the movement groove, and a movement block is slidably installed outside the fixing rod.

[0014] Preferably, a support spring is sleeved on one end of the fixing rod away from the moving block, a guide arc plate is fixedly mounted on the lower end of the moving block, and two groups of guide arc plates and moving blocks are arranged at the lower end of the mounting plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The compression housing can be disassembled from the mounting plate, and the filter screen and sealing ring inside the compression housing can be replaced to ensure the filtering effect of the filtering structure;

[0017] 2. The locking cylinder provides power to drive the movement of the sliding member and the limiting rod, which can automatically control the positional relationship between the positioning pin and the limiting rod, making it easy to complete the disassembly and assembly of the compression housing, and ensuring the safety and convenience of replacing the filter;

[0018] 3. Furthermore, by setting a position sensor, the position of the positioning pin can be detected to ensure the accuracy of the installation of the compression shell and improve the convenience of the installation of the compression shell;

[0019] 4. Furthermore, by setting the guide arc plate, the compression shell can be moved horizontally up and down, avoiding the skewness of the compression shell installation and ensuring the accuracy of the installation of the guide arc plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the compression shell of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the compacting shell of the utility model from a top view;

[0024] Figure 5 This is a schematic diagram of the structure of the sliding member of the utility model from top view;

[0025] Figure 6 It is a left sectional structural schematic diagram of the guide arc plate of the utility model.

[0026] In the figure: 1. filter cartridge; 2. mounting plate; 3. clamping shell; 4. fixing block; 5. sliding member; 6. mounting block; 7. limiting rod; 8. engaging member; 9. locking cylinder; 10. position sensor; 11. filter screen; 12. sealing ring; 13. positioning pin; 14. positioning slot; 15. moving slot; 16. fixing rod; 17. moving block; 18. supporting spring; 19. guide arc plate. DETAILED DESCRIPTION

[0027] 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.

[0028] In a specific embodiment, Figure 1-Figure 4 As shown;

[0029] A filter cartridge 1 and a mounting plate 2 fixedly mounted at the lower end of the filter cartridge 1;

[0030] The lower end of the mounting plate 2 is clamped with a compression housing 3, and a sealing ring 12 is nested inside the compression housing 3, and a filter screen 11 is fixedly installed at the lower end of the compression housing 3;

[0031] A fixing block 4 is fixedly mounted on the lower end of the mounting plate 2, and a sliding member 5 is slidably mounted on the upper end of the fixing block 4, and a clamping member 8 is clamped and mounted on the upper end of the sliding member 5, and the fixing block 4 is located at both ends of the sliding member 5;

[0032] A mounting block 6 is fixedly mounted on one side of the sliding member 5 close to the pressing housing 3, and a limiting rod 7 is fixedly mounted on one end of the mounting block 6 away from the sliding member 5, and two groups of the limiting rod 7, the mounting block 6 and the sliding member 5 are symmetrically arranged about the vertical center axis of the pressing housing 3;

[0033] A positioning pin 13 is fixedly mounted at an equal angle on the upper end of the compression housing 3 , and a positioning slot 14 is provided inside the positioning pin 13 , and the positioning slot 14 is engaged with the limiting rod 7 .

[0034] When using the core making machine filter screen quick replacement mechanism, first install the mechanism at the position where it needs to work. After the mechanism has been used for a long time, it needs to be replaced. At this time, the locking cylinder 9 drives the engaging member 8 to move. During the movement of the engaging member 8, the sliding member 5 will be driven to slide on the upper end of the fixed block 4. During the movement of the sliding member 5, the mounting block 6 and the limiting rod 7 will be driven to move. During the movement of the limiting rod 7, the limiting rod 7 will be away from the positioning slot 14. After the limiting rod 7 is separated from the positioning slot 14, the clamping shell 3 can be removed from the lower end of the mounting plate 2, so that the filter screen 11 and the sealing ring 12 can be replaced, thereby completing the disassembly process of the filter screen 11, effectively improving the convenience of replacing the filter screen 11.

[0035] In one specific embodiment, Figure 1-Figure 5 As shown;

[0036] A locking cylinder 9 is fixedly mounted on the outer side of the filter cartridge 1 , and an output end of the locking cylinder 9 is fixedly connected to a clamping member 8 . A position sensor 10 is fixedly mounted on the upper end of the mounting plate 2 .

[0037] After the filter screen 11 is replaced, the clamping shell 3 and its internal structure need to be installed to the initial position. After the clamping shell 3 moves to the initial position, the position sensor 10 will receive the positioning signal of the positioning pin 13. At this time, the locking cylinder 9 will move again. In this process, the locking cylinder 9 needs to drive the engaging member 8 to move in the opposite direction, and the engaging member 8 will drive the sliding member 5 to move in the direction of the clamping shell 3. At this time, the mounting block 6 and the limiting rod 7 will move in the direction of the positioning pin 13. In this process, the limiting rod 7 will enter the interior of the positioning slot 14 and limit the positioning pin 13 at this position. At this point, the installation process of the clamping shell 3 is completed, which effectively improves the convenience and accuracy of the installation of the clamping shell 3.

[0038] Based on the above embodiments, Figure 1-Figure 2 and Figure 6 As shown;

[0039] A moving groove 15 is formed at the lower end of the mounting plate 2, and a fixing rod 16 is fixedly installed inside the moving groove 15, and a moving block 17 is slidably installed outside the fixing rod 16;

[0040] A support spring 18 is sleeved on one end of the fixing rod 16 away from the moving block 17 , a guide arc plate 19 is fixedly mounted on the lower end of the moving block 17 , and two groups of guide arc plates 19 and moving blocks 17 are arranged at the lower end of the mounting plate 2 .

[0041] During the installation of the compression housing 3, the upper end surface of the compression housing 3 cannot be directly observed, and it is difficult to ensure whether the compression housing 3 moves horizontally, and therefore it is difficult to ensure that the compression housing 3 and the mounting plate 2 are quickly docked;

[0042] Before the clamping shell 3 contacts the mounting plate 2, it will first contact the guide arc plate 19. After the clamping shell 3 contacts the guide arc plate 19, it will squeeze the guide arc plate 19. After the guide arc plate 19 is squeezed, the moving block 17 will slide on the outside of the fixed rod 16. During the sliding process of the moving block 17, the supporting spring 18 will be squeezed and the supporting spring 18 will be contracted. During the contraction process, the supporting spring 18 will reversely squeeze the clamping shell 3, so that the clamping shell 3 is facing the lower end of the mounting plate 2, so that the mounting plate 2 can be quickly docked with the clamping shell 3, and the quick docking of the clamping shell 3 can be quickly completed, thereby increasing the overall practicality.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0044] 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 filter screen quick replacement mechanism for a core making machine, comprising a filter cartridge (1) and a mounting plate (2) fixedly mounted at the lower end of the filter cartridge (1); Features: It also includes that a compression shell (3) is mounted on the lower end of the mounting plate (2), a sealing ring (12) is nested inside the compression shell (3), and a filter screen (11) is fixedly mounted on the lower end of the compression shell (3).

2. A quick filter replacement mechanism for a core making machine according to claim 1, characterized in that: A fixing block (4) is fixedly mounted on the lower end of the mounting plate (2), a sliding member (5) is slidably mounted on the upper end of the fixing block (4), and a locking member (8) is snap-fitted on the upper end of the sliding member (5), and the fixing block (4) is located at both ends of the sliding member (5).

3. A quick filter replacement mechanism for a core making machine according to claim 2, characterized in that: A mounting block (6) is fixedly mounted on one side of the sliding member (5) close to the compression housing (3), and a limiting rod (7) is fixedly mounted on one end of the mounting block (6) away from the sliding member (5), and two groups of the limiting rod (7), the mounting block (6) and the sliding member (5) are symmetrically arranged with respect to the vertical center axis of the compression housing (3).

4. A quick filter replacement mechanism for a core making machine according to claim 1, characterized in that: A locking cylinder (9) is fixedly mounted on the outer side of the filter cartridge (1), and the output end of the locking cylinder (9) is fixedly connected to the engaging member (8). A position sensor (10) is fixedly mounted on the upper end of the mounting plate (2).

5. The filter screen quick replacement mechanism for a core making machine according to claim 1, characterized in that: A positioning pin (13) is fixedly mounted at an equal angle on the upper end of the compression housing (3), and a positioning slot (14) is provided inside the positioning pin (13), and the positioning slot (14) is engaged and connected with the limiting rod (7).

6. A quick filter replacement mechanism for a core making machine according to claim 1, characterized in that: A moving groove (15) is provided at the lower end of the mounting plate (2), a fixing rod (16) is fixedly installed inside the moving groove (15), and a moving block (17) is slidably installed outside the fixing rod (16).

7. A quick filter replacement mechanism for a core making machine according to claim 6, characterized in that: A support spring (18) is sleeved on one end of the fixed rod (16) away from the moving block (17); a guide arc plate (19) is fixedly mounted on the lower end of the moving block (17); and two groups of the guide arc plate (19) and the moving block (17) are arranged at the lower end of the mounting plate (2).

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