A multi-contact oil cylinder with anti-leakage structure design

Abstract

The present invention relates to the technical field of molding machines, and discloses a multi-contact oil cylinder with a leakage-proof structure design, including a support frame, wherein the bottom end of the support frame is fixedly connected with a compaction trough body, and vertical slide grooves are symmetrically provided on both sides of the top of the support frame, and a compaction mechanism includes a side support plate fixedly connected to the bottom end of the top plate, and the inner sides of the bottom ends of the two side support plates are fixedly connected to a multi-contact box body, and a partition is fixedly connected to the middle of the top of the multi-contact box body. The top plate is vertically slidably connected in the vertical slide groove, and the side plates are symmetrically fixedly connected on both sides of the support frame. A hydraulic rod is fixedly connected between the two side plates and the top plate, and a compaction mechanism is provided in the middle of the support frame, and the compaction mechanism is connected to the middle of the top plate. The present invention utilizes the enlargement of the groove mouth and the sealing ring, so as to effectively reduce the shear destructive force during the compaction operation, and is more convenient in the later installation, and can be installed upside down at the multi-contact box body, and is not easy to fall off during the reverse connection installation, which effectively prevents leakage.

Description

Technical Field

[0001] The invention relates to the technical field of molding machines, and in particular to a multi-contact oil cylinder with an anti-leakage structure design. Background Art

[0002] The most commonly used molding line for clay sand casting is the static pressure line, which is a process of fully automatic sand compaction through hydraulic drive, mainly used for fully automatic molding in clay sand casting. It compacts the molding sand preliminarily through pneumatic pre-compaction or hydraulic multi-contact, and then compacts the molding sand through the multi-contact hydraulic pressure head to achieve vibration-free compaction; the multi-contact is composed of multiple groups of oil cylinders, which compact individually or in multiple groups during the compaction process.

[0003] However, the O-ring at the connection between the chassis and the hydraulic rod is too small for the 9cm diameter of the oil port. When installed under the 18cm diameter through hole of the end cover, it will be offset and pressed on the oil port, causing leakage. In addition, when the molding vibration end is compressed, it presses on the oil port and causes shear damage, which leads to leakage. When the clay sand casting is compacted, dust is easily entrained with the return stroke of the hydraulic cylinder, resulting in more dust adhering to the piston rod, which causes greater damage to the piston rod and affects the service life of the equipment. Summary of the invention

[0004] In order to solve the technical problems raised in the background technology that, when performing clay sand casting, the sealing ring and the oil port do not match well, which is easy to cause deviation and leakage during installation, and the piston rod return stroke is easy to adhere to dust, affecting the service life of the equipment and ultimately leading to low equipment production efficiency, the present invention provides a multi-contact oil cylinder with a leakage-proof structure design.

[0005] The present invention is implemented by the following technical scheme: a multi-contact oil cylinder with an anti-leakage structure design, including a support frame, the bottom end of the support frame is fixedly connected to a compaction trough, and vertical slide slots are symmetrically opened on both sides of the top of the support frame. A top plate is vertically slidably connected in the vertical slide slot, and side plates are symmetrically fixedly connected on both sides of the support frame. A hydraulic rod is fixedly connected between the two side plates and the top plate, and a compaction mechanism is arranged in the middle of the support frame, and the compaction mechanism is connected to the middle of the top plate;

[0006] The compaction mechanism includes a side support plate fixedly connected to the bottom end of the top plate, a multi-contact box is fixedly connected to the inner sides of the bottom ends of the two side support plates, a partition is fixedly connected to the middle part of the top end of the multi-contact box, multiple groups of hydraulic rods two are symmetrically and evenly fixedly connected on both sides of the multi-contact box, an oil pressure control box is evenly fixedly connected to the top end of the top plate, multiple groups of oil pressure control boxes are respectively connected to adjacent hydraulic rods two, multiple groups of hydraulic rods two are fixedly connected with connecting through holes at the connection points with the multi-contact box, groove openings are opened at the corresponding connection points of the multi-contact box, and R-type sealing rings are arranged at the connection points, multiple groups of hydraulic rods two are relatively vertically slidably connected with piston rods, and multiple groups of piston rods slide vertically in the multi-contact box, multiple groups of piston rods bottom ends are fixedly connected with pressure plates, and cleaning mechanisms are arranged at the sliding connection between the bottom end of the multi-contact box and the piston rod.

[0007] Through the above technical solution, the sand can be compacted and formed using a compaction mechanism, and the groove opening can be sealed using an R-type sealing ring, thereby greatly improving the sealing performance of the equipment connection.

[0008] As a further improvement of the above scheme, the cleaning mechanism includes a vertical movable groove opened on one side of the side support plate, a rack plate is vertically slidably connected in the vertical movable groove, a connecting plate is fixedly connected to the bottom end of the rack plate, and the inner side of the connecting plate is fixedly connected to the outer sides of the two adjacent pressure plates.

[0009] Through the above technical solution, it is achieved that when multiple groups of hydraulic rods 2 are started, the rack plate 1 is synchronously driven to move.

[0010] As a further improvement of the above solution, a horizontal slot is provided in the middle of the bottom end of the multi-contact box, a slide bar is horizontally slidably connected in the horizontal slot, and one side of the slide bar is provided with a hollow circular cavity.

[0011] As a further improvement of the above solution, a circulation guide groove is opened on the inner wall of the slide bar, and a ball block is slidably connected to the circulation guide groove. A rotating rod is fixedly connected to the bottom end of the ball block, and the other side of the rotating rod is rotatably connected to the bottom end of the multi-contact box.

[0012] As a further improvement of the above solution, the other end of the rotating rod is fixedly connected with a gear 1, and the gear 1 is meshedly connected with a rack plate 1.

[0013] Through the above technical solution, the meshing connection transmission between the rack plate 1 and the gear 1 is utilized, and the sliding of the ball block and the circulation guide groove is coordinated to provide power for the sliding of the slide bar.

[0014] As a further improvement of the above scheme, the bottom end of the multi-contact box is fixedly connected with an annular protrusion at the sliding position of the piston rod, multiple groups of the annular protrusions are rotatably connected to the outside of gear 2, multiple groups of gear 2 are meshingly connected to the inside of rack plate 2, the rack plate 2 is symmetrically fixedly connected to both sides of the slide bar, and the bottom ends of multiple groups of gear 2 are evenly fixedly connected with scraper strips.

[0015] Through the above technical solution, multiple groups of scrapers can effectively clean and scrape the outer wall of the piston rod as the gear 2 is meshed and connected with the rack plate 2.

[0016] As a further improvement of the above scheme, multiple groups of the pressure plates are provided with guide slide groove openings on the outer sides, multiple groups of the guide slide groove openings are connected with scrapers at a relatively horizontal sliding connection, multiple groups of the scrapers are fixedly connected with telescopic rods on the tops, multiple groups of the telescopic rods are fixedly connected with bottom fixing blocks on the tops, and multiple groups of the bottom fixing blocks are evenly fixedly connected to the bottom of the slide bar.

[0017] Through the above technical solution, the scraper can adapt to the telescopic maintenance and sliding connection with the guide slide groove by utilizing the multi-stage sliding connection of the telescopic rod.

[0018] As a further improvement of the above solution, the guide slot opening is located in the middle of the pressure plate and is higher than the two sides.

[0019] Through the above technical solution, dust will not be pushed toward the piston rod during the activity, and only the dust can be cleaned from the piston rod and dropped into the compaction groove.

[0020] As a further improvement of the above solution, the telescopic rod is a multi-stage telescopic rod.

[0021] Through the above technical solution, it is possible to ensure that the scraper can always be slidably connected with the guide groove when the piston rod is extended or retracted.

[0022] As a further improvement of the above solution, the inner diameter of the groove mouth is 16.2 cm.

[0023] The above technical solution is used to adapt to the enlarged R-ring for sealing operations.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (a) The present invention utilizes the enlargement of the groove opening and the sealing ring, thereby being able to effectively reduce the shear destructive force during compaction operations, and being more convenient during later installation. It can be installed upside down on a multi-contact box body, and is not easy to fall off during reverse connection installation, effectively preventing leakage.

[0026] (ii) The present invention utilizes a cleaning mechanism to effectively remove dust adhered to the piston rod, and simultaneously, under the action of multiple groups of scrapers, effectively cleans the fallen dust into the compaction tank, thereby improving the protection of the piston rod and increasing the sustainable production capacity of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the overall structure of a multi-contact oil cylinder with an anti-leakage structure design provided in Example 1 of the present invention;

[0028] Figure 2 For the present invention Figure 1 The formal cross-sectional structure diagram of

[0029] Figure 3 It is a structural schematic diagram of the compacting mechanism of the present invention;

[0030] Figure 4 It is a right side structural schematic diagram of the compacting mechanism of the present invention;

[0031] Figure 5 It is a structural schematic diagram of the cleaning mechanism of the present invention;

[0032] Figure 6 It is a structural schematic diagram of the reciprocating component of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the driving component of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the connecting through hole of the present invention;

[0035] Fig. 9 For the present invention Figure 8 A schematic diagram of a local enlarged structure;

[0036] Fig.10 This is a schematic diagram of the structure of the present invention without modifying the front groove opening;

[0037] Fig.11 This is a schematic diagram of the structure of the groove opening after modification of the present invention;

[0038] Fig.12 It is a structural schematic diagram of the connecting through hole of the present invention;

[0039] Fig.13 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A in the middle.

[0040] Description of main symbols:

[0041] 1. Support frame; 2. Compacting tank body; 3. Side plate; 4. Hydraulic rod one; 5. Top plate; 6. Oil pressure control box; 7. Side support plate; 8. Partition plate; 9. Hydraulic rod two; 10. Multi-contact box body; 11. Connecting through hole; 12. Piston rod; 13. Pressing plate; 14. Connecting plate; 15. Rack plate one; 16. Gear one; 17. Horizontal notch; 18. Slide bar; 19. Rack plate two; 20. Circulation guide groove; 21. Turning rod; 22. Ball block; 23. Gear two; 24. Annular protrusion; 25. Scraper strip; 26. Guide slide groove; 27. Scraper; 28. Telescopic rod; 29. ​​Bottom fixing block. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0043] Example 1: Please combine Figure 1-Figure 3 , a multi-contact oil cylinder with an anti-leakage structure design in this embodiment includes:

[0044] Support frame 1, the bottom of support frame 1 is fixedly connected with compaction trough 2, vertical slide slots are symmetrically opened on both sides of the top of support frame 1. Top plate 5 is vertically slidably connected in the vertical slide slots, side plates 3 are symmetrically fixedly connected on both sides of support frame 1, hydraulic rod 1 4 is fixedly connected between two side plates 3 and top plate 5, compaction mechanism is arranged in the middle of support frame 1, compaction mechanism is connected with the middle of top plate 5, specifically, compaction mechanism is installed on top plate 5 and is located in support frame 1;

[0045] The compaction mechanism includes a side support plate 7 fixedly connected to the bottom end of the top plate 5, a multi-contact box 10 is fixedly connected to the inner side of the bottom end of the two side support plates 7, a partition 8 is fixedly connected to the middle of the top of the multi-contact box 10, and multiple groups of hydraulic rods 9 are symmetrically and evenly fixedly connected on both sides of the multi-contact box 10. The top of the top plate 5 is evenly fixedly connected with an oil pressure control box 6, and the multiple groups of oil pressure control boxes 6 are respectively connected to the adjacent hydraulic rods 9, and the connection between the multiple groups of hydraulic rods 9 and the multi-contact box 10 is fixedly connected with a connecting through hole 11. Specifically, the supporting force of the multiple sets of hydraulic rods 2 9 is less than the supporting force of the two hydraulic rods 1 4. The corresponding connections of the multi-contact box 10 are all provided with groove openings, and the connections are all provided with R-type sealing rings. The multiple sets of hydraulic rods 2 9 are relatively vertically slidably connected with piston rods 12, and the multiple sets of piston rods 12 slide vertically in the multi-contact box 10. The bottom ends of the multiple sets of piston rods 12 are fixedly connected with pressure plates 13, and the sliding connection between the bottom end of the multi-contact box 10 and the piston rod 12 is provided with a cleaning mechanism.

[0046] The implementation principle of a multi-contact oil cylinder with an anti-leakage structure design in the embodiment of the present application is:

[0047] The sand to be compacted is placed in the compacting tank 2 as needed, and then the top plate 5 is driven by the hydraulic rod 4 to slide downward along the vertical slide groove to a suitable position. The synchronous compacting mechanism will slide down along with it, and the multiple groups of piston rods 12 are compacted downward by the action of the oil pressure control box 6 and the multi-contact box 10, and the sand in the compacting tank 2 is compacted by the pressure plate 13 fixedly connected to the piston rod 12.

[0048] After the compaction operation is completed, the compaction mechanism is returned to its original position using a hydraulic rod 4, and the formed object at the compaction tank 2 is taken out.

[0049] Example 2: Combination Figure 5-Figure 7 As shown in FIG. 13, the present embodiment is further improved on the basis of the embodiment 1 in that:

[0050] The cleaning mechanism includes a vertical movable slot opened on one side of the side support plate 7, in which a rack plate 15 is vertically slidably connected, and a connecting plate 14 is fixedly connected to the bottom end of the rack plate 15, and the inner side of the connecting plate 14 is fixedly connected to the outer sides of the two adjacent pressure plates 13.

[0051] A horizontal slot 17 is provided in the middle of the bottom end of the multi-contact box 10 . A slide bar 18 is horizontally slidably connected in the horizontal slot 17 . One side of the slide bar 18 is provided with a hollow circular cavity.

[0052] A circulation guide groove 20 is provided on the inner wall of the slide bar 18 , and a ball block 22 is slidably connected to the circulation guide groove 20 . A rotating rod 21 is fixedly connected to the bottom end of the ball block 22 , and the other side of the rotating rod 21 is rotatably connected to the bottom end of the multi-contact box 10 .

[0053] The other end of the rotating rod 21 is fixedly connected with a gear 16, and the gear 16 is meshedly connected with the rack plate 15.

[0054] The bottom end of the multi-contact box 10 is located at the sliding position of the piston rod 12 and is fixedly connected with an annular protrusion 24. The outside of multiple sets of annular protrusions 24 are rotatably connected with gear 23. The inside of multiple sets of gear 23 is meshed with rack plate 219. Rack plate 219 is symmetrically fixedly connected to both sides of the slide bar 18. The bottom ends of multiple sets of gear 23 are evenly fixedly connected with scraper strips 25. Specifically, the scraper strips 25 are made of rubber and fit the outer wall of the piston rod 12.

[0055] Guide groove openings 26 are provided on the outer sides of the multiple groups of pressure plates 13, and scrapers 27 are connected to the multiple groups of guide groove openings 26 for relative horizontal sliding. Telescopic rods 28 are fixedly connected to the tops of the multiple groups of scrapers 27, and bottom fixing blocks 29 are fixedly connected to the tops of the multiple groups of telescopic rods 28. The multiple groups of bottom fixing blocks 29 are evenly fixedly connected to the bottom ends of the slide bars 18.

[0056] The guide slot opening 26 is located in the middle of the pressure plate 13 at a height higher than the two sides. Specifically, when the multiple groups of scrapers 27 slide back and forth periodically, they can slide upward when approaching the piston rod 12, and abut against the top of the pressure plate 13 during the return journey to clean up the falling dust.

[0057] The telescopic rod 28 is a multi-stage telescopic rod, specifically, in order to adapt to the telescopic movement of the piston rod 12 and ensure that the scraper 27 can always be slidably connected with the guide slot 26.

[0058] The implementation principle of a multi-contact oil cylinder with an anti-leakage structure design in the embodiment of the present application is:

[0059] With the start of multiple groups of hydraulic rods 29, when the pressure plate 13 drives the rack plate 15 to slide vertically, the rack plate 15 will be able to drive the gear 16 to engage and rotate, and with the rotation of the gear 16, the sliding connection between the ball block 22 and the circulation guide groove 20 can realize the reciprocating horizontal sliding of the slide bar 18 at the horizontal groove 17, and with the reciprocating horizontal sliding of the slide bar 18, the multiple groups of gears 23 meshing with the rack plate 19 can be driven, and the dust on the outer wall of the piston rod 12 can be scraped off synchronously.

[0060] The fallen dust can be scraped off by the scraper 27 that moves back and forth with the slide bar 18, and the dust next to the piston rod 12 can be cleaned to the connection gap of the multiple groups of pressure plates 13, and finally enter the compaction tank 2 for collection.

[0061] Example 3: Combination Figure 8-Figure 12 Based on Example 1 and Example 2, this embodiment is further improved in that:

[0062] The inner diameter of the groove mouth is 16.2cm.

[0063] The implementation principle of a multi-contact oil cylinder with an anti-leakage structure design in the embodiment of the present application is:

[0064] Use R-type ring, flat surface pressing flat surface, and at the same time enlarge the sealing ring: 13cm (inner diameter) X1.6X2 (height), so that the sealing ring is pressed flat to the outside of the oil port, and the flat surface pressing has small shear damage; the sealing ring is installed on the inverted multi-contact oil tank, the sealing ring gap is very important, and it cannot fall off after being reversed.

[0065] Through multiple verifications, the sealing ring adopts an interference fit of 15.9cm±0.05cm and the outer diameter of the sealing ring is 16.2cm. The effect is good and it will not fall off during the installation process.

[0066] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A multi-contact oil cylinder with anti-leakage structure design, comprising: A support frame, wherein a compaction trough is fixedly connected to the bottom end of the support frame, vertical slide slots are symmetrically provided on both sides of the top end of the support frame, a top plate is vertically slidably connected in the vertical slide slots, side plates are symmetrically fixedly connected to both sides of the support frame, a hydraulic rod is fixedly connected between the two side plates and the top plate, a compaction mechanism is provided in the middle of the support frame, and the compaction mechanism is connected to the middle of the top plate; Features: The compaction mechanism includes a side support plate fixedly connected to the bottom end of the top plate, a multi-contact box is fixedly connected to the inner sides of the bottom ends of the two side support plates, a partition is fixedly connected to the middle part of the top end of the multi-contact box, multiple groups of hydraulic rods two are symmetrically and evenly fixedly connected on both sides of the multi-contact box, an oil pressure control box is evenly fixedly connected to the top end of the top plate, multiple groups of oil pressure control boxes are respectively connected to adjacent hydraulic rods two, multiple groups of hydraulic rods two are fixedly connected with connecting through holes at the connection points with the multi-contact box, groove openings are opened at the corresponding connection points of the multi-contact box, and R-type sealing rings are arranged at the connection points, multiple groups of hydraulic rods two are relatively vertically slidably connected with piston rods, and multiple groups of piston rods slide vertically in the multi-contact box, multiple groups of piston rods bottom ends are fixedly connected with pressure plates, and cleaning mechanisms are arranged at the sliding connection between the bottom end of the multi-contact box and the piston rod.

2. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 1, characterized in that: The cleaning mechanism includes a vertical movable slot opened on one side of the side support plate, a rack plate 1 is vertically slidably connected in the vertical movable slot, a connecting plate is fixedly connected to the bottom end of the rack plate 1, and the inner side of the connecting plate is fixedly connected to the outer sides of two adjacent pressure plates.

3. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 2, characterized in that: A horizontal slot is provided in the middle of the bottom end of the multi-contact box, a slide bar is horizontally slidably connected in the horizontal slot, and one side of the slide bar is provided with a hollow circular cavity.

4. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 3, characterized in that: A circulation guide groove is provided on the inner wall of the slide bar, a ball block is slidably connected to the circulation guide groove, a rotating rod is fixedly connected to the bottom end of the ball block, and the other side of the rotating rod is rotatably connected to the bottom end of the multi-contact box.

5. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 4, characterized in that: The other end of the rotating rod is fixedly connected with a gear 1, and the gear 1 is meshedly connected with a rack plate 1.

6. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 4, characterized in that: The bottom end of the multi-contact box is located at the sliding position of the piston rod and is fixedly connected with an annular protrusion. Multiple groups of the annular protrusions are rotatably connected to the outside of gear 2. Multiple groups of gear 2 are meshedly connected to the inside of rack plate 2. Rack plate 2 is symmetrically fixedly connected to both sides of the slide bar. The bottom ends of multiple groups of gear 2 are evenly fixedly connected with scraper strips.

7. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 6, characterized in that: The outer sides of the multiple groups of pressure plates are provided with guide groove openings, the guide groove openings of the multiple groups are connected with scrapers for relative horizontal sliding, the tops of the multiple groups of scrapers are fixedly connected with telescopic rods, the tops of the multiple groups of telescopic rods are fixedly connected with bottom fixing blocks, and the multiple groups of bottom fixing blocks are evenly fixedly connected to the bottom of the slide bar.

8. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 7, characterized in that: The guide slot opening is located in the middle of the pressing plate and is higher than the two sides.

9. A multi-contact oil cylinder with anti-leakage structure design as claimed in claim 7, characterized in that: The telescopic rod is a multi-stage telescopic rod.

10. The multi-contact oil cylinder with anti-leakage structure design as claimed in claim 1, characterized in that: The inner diameter of the groove mouth is 16.2 cm.

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