Active sand scraping mechanism
By providing a moving seat connected by a sand box bearing bracket and a guide rod on the top of the vertical frame, the spatula is driven to actively move with a telescopic cylinder, which solves the problem of sand box interference caused by the fixing setting of the scraper, and realizes normal conveying and effective scraping of the sand box.
Patent Information
- Application Number
- CN202422074605.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-08-26
AI Technical Summary
The fixing of scrapers in existing production lines causes the sand box to easily cause collision interference on the conveying track, affecting normal production, and even causing the sand box to derail.
An active sand scraping mechanism is designed. By installing a sand box support bracket on the top of the vertical frame, connecting the moving seat on the guide rod, installing a scraper on the mobile seat, and driving the scraper to actively move through the telescopic cylinder, scraping the sand type at the bottom of the sand box is realized. After the scraper is removed, the scraper does not interfere with the sand box and is transferred normally.
Ensure that the sand box is transferred normally on the conveying track, does not affect production, avoid the sand box derailment, realize effective scraping of the sand type at the bottom of the sand box, and ensure the normal production of the molding line.
Smart Images
Figure CN223210440U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand box cleaning equipment, in particular to an active sand scraping mechanism. Background Art
[0002] The molding line is a mechanized equipment production line for batch production of castings. The production of castings is achieved through operations such as filling sand into the sand box for molding, closing the box, pouring and cooling, and sand falling out. Different types of castings have different requirements for the height of the protruding sand mold in the sand box. During the molding process, a scraper is usually used to scrape and clean the protruding sand mold. The scrapers in the existing production lines are mostly fixed at the bottom of the sand box conveyor track, and the sand mold is scraped off by the relative movement of the sand box. However, this installation method of the scraper can easily collide and interfere with different types of sand boxes, which will also affect the normal movement of the sand box on the conveyor track, and even cause the sand box to derail, which has a serious negative impact on the normal production of the molding line. Utility Model Content
[0003] The purpose of the utility model is to provide an active sand scraping mechanism, which will not affect the normal transfer of the sand box on the conveying track, and can complete the active scraping of the sand mold at the bottom of the sand box, thereby solving the problems in the prior art.
[0004] The technical solution adopted by the present invention to solve its technical problems is as follows: an active sand scraping mechanism, comprising a stand, a sand box support frame provided on the top of the stand, a supporting roller provided on the inner side of the sand box support frame, a horizontally arranged guide rod provided inside the stand, a guide sleeve provided on the guide rod, a movable seat connected to the guide sleeve, a first scraper and a second scraper provided on the movable seat, wherein the position of the second scraper is higher than that of the first scraper, a telescopic oil cylinder provided on one side of the stand, a piston rod of the telescopic oil cylinder connected to the movable seat, and the extension of the piston rod of the telescopic oil cylinder can drive the scraper on the movable seat to move from one side to the other side in the width direction of the bottom of the sand box. The first scraper includes a first knife seat, a first transverse scraper is installed at the front end of the first knife seat through a first pressure plate, the second scraper includes a second knife seat, a second transverse scraper is installed at the front end of the second knife seat through a second pressure plate, and the first knife seat and the second knife seat are both installed on the movable seat by fastening bolts. The lower ends of the first and second scrapers are each equipped with a scraper height adjustment mechanism. The scraper height adjustment mechanism includes an adjustment screw sleeve mounted on a movable base, an adjustment bolt mounted within the adjustment screw sleeve, and an end of the adjustment bolt contacting the blade holder. The first blade holder has a first elongated slot that engages with the tightening bolt, while the second blade holder has a second elongated slot that engages with the tightening bolt. Limit studs are provided on both sides of the interior of the stand, and the guide sleeve moves between the two limit studs. A switch bracket is also provided on the stand below the limit studs, and a detection switch is mounted on the switch bracket. When the guide sleeve reaches its limit position, the detection switch detects the movement. The detection switch is connected to the oil circuit control system of the telescopic cylinder via a control circuit. A support frame is mounted on the upper side of the stand, and a support is provided at the end of the support frame away from the stand. The support is hingedly mounted on the cylinder barrel of the telescopic cylinder. The end of the piston rod of the telescopic cylinder is provided with an earring, and the movable base is provided with a connecting shaft that engages with the earring. A horizontally arranged connecting frame is installed in the vertical frame, and the connecting frame is arranged parallel to the guide rod. Protective covers are installed at both ends of the guide sleeve in the longitudinal direction, and the protective covers are located on the outer periphery of the guide rod. A rotatable swing frame is hingedly installed in the movable seat, and a first scraper and a second scraper are installed on the swing frame. The swing frame is provided with a first protrusion and a second protrusion. The piston rod of the telescopic oil cylinder is hingedly installed on the first protrusion. A first limit block that cooperates with the first protrusion and a second limit block that cooperates with the second protrusion are provided in the movable seat. When the piston rod of the telescopic oil cylinder is extended, it first drives the swing frame to rotate until the first protrusion contacts the first limit block, and the first and second scrapers rotate close to the bottom of the sand box, and then drives the swing frame and the movable seat to extend together. When the piston rod of the telescopic oil cylinder is retracted, it first drives the swing frame to rotate until the second protrusion contacts the second limit block, and the first and second scrapers rotate away from the bottom of the sand box, and then drives the swing frame and the movable seat to retract together.
[0005] The positive effect of the present invention is that the active sand scraping mechanism described in the present invention is provided with a support frame capable of conveying a sand box at the top of a vertical frame, a guide sleeve is provided on the guide rod in the vertical frame, the guide sleeve is connected to a movable seat, a scraper is provided on the movable seat, and the movable seat can be driven to move by a telescopic oil cylinder, thereby realizing the function of scraping the sand mold at the bottom of the sand box by the scraper. The scraper is provided on the movable seat and is actively moved by the telescopic oil cylinder. When the sand box stops and the sand mold at the bottom needs to be scraped, the telescopic oil cylinder drives the scraper to move and scrape at the bottom of the sand box. After the scraping is completed, the telescopic oil cylinder drives the scraper to move out of the bottom position of the support frame, which will not interfere with the sand box itself and the normal transfer of the sand box, thereby ensuring the normal production of the molding line. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Figure 1 It is a structural diagram of the utility model;
[0007] Figure 2 yes Figure 1 Right view of;
[0008] Figure 3 yes Figure 1 Middle AA section view;
[0009] Figure 4 yes Figure 1 Middle BB section view;
[0010] Figure 5 yes Figure 1 A partial enlarged view of middle I;
[0011] Figure 6 It is a structural diagram of the swing frame hingedly installed in the moving seat;
[0012] Figure 7 yes Figure 6 Schematic diagram of the state in which the first protrusion of the middle structure contacts the first limiting block;
[0013] Figure 8 yes Figure 6 Schematic diagram of the state in which the second protrusion of the middle structure contacts the second limiting block. DETAILED DESCRIPTION
[0014] The active sand scraping mechanism described in the present utility model is as follows: Figure 1-4 As shown, it includes a stand 1, a sand box support frame 2 is provided on the top of the stand 1, and a supporting roller 3 is provided on the inner side of the sand box support frame 2. The supporting roller 3 is used to place the sand box, and the sand box can realize its own transportation under the rotation of the supporting roller 3.
[0015] A horizontally arranged guide rod 4 is provided inside the stand 1 , on which a guide sleeve 5 is mounted, and a movable seat 6 is connected to the guide sleeve 5 . The movable seat 6 and the guide sleeve 5 can move along the length direction of the guide rod 4 .
[0016] The movable seat 6 is equipped with an inclined first scraper 7 and a second scraper 8, wherein the second scraper 8 is positioned higher than the first scraper 7. The two scrapers can crush and flatten the sand mold protruding from the bottom of the sand box, and the high and low arrangement can scrape the protruding sand mold in layers, making the scraping effect better. A telescopic cylinder 9 is installed on one side of the stand 1. The piston rod of the telescopic cylinder 9 is connected to the movable seat 6. When the piston rod of the telescopic cylinder 9 is extended, it can drive the scraper on the movable seat 6 to move from one side of the sand box bottom width direction to the other side.
[0017] The movement of the movable seat 6 and the scraper thereon is provided with the necessary driving force by the telescopic cylinder 9. When there is no need to scrape the sand mold in the sand box, the piston rod of the telescopic cylinder 9 is retracted, so that the scraper is in a position on the side of the stand 1, which will not interfere with the normal transportation of the sand box. When the sand box stays in the cleaning position, the piston rod of the telescopic cylinder 9 is extended, driving the first scraper 7 and the second scraper 8 to move at the bottom of the sand box, thereby realizing the corresponding sand mold scraping.
[0018] Furthermore, if Figure 5 As shown, in order to facilitate the disassembly and assembly of the scraper, the first scraper 7 includes a first blade seat 10, and the front end of the first blade seat 10 is equipped with a first transverse scraper 11 through a first pressure plate 34. The second scraper 8 includes a second blade seat 12, and the front end of the second blade seat 12 is equipped with a second transverse scraper 14 through a second pressure plate 13. The first blade seat 10 and the second blade seat 12 are both installed on the movable seat 6 through fastening bolts 17.
[0019] Furthermore, in order to adapt to the different requirements of different types of sand boxes for the scraping height of the bottom sand mold, the lower ends of the first scraper 7 and the second scraper 8 are provided with a scraper height adjustment mechanism, and the scraper height adjustment mechanism includes an adjusting screw sleeve 15 arranged on the movable seat 6, and an adjusting bolt 16 is installed in the adjusting screw sleeve 15. The end of the adjusting bolt 16 is in contact with the tool holder, wherein the first tool holder 10 is provided with a first long groove 18 that cooperates with the fastening bolt 17, and the second tool holder 12 is provided with a second long groove 19 that cooperates with the fastening bolt 17. After loosening the fastening bolt 17, rotating the adjusting bolt 16 can push the tool holder to move along the direction of the long groove. After adjusting the horizontal scraper to the appropriate height position, tighten the fastening bolt 17 to fix the tool holder on the movable seat 6.
[0020] Furthermore, in order to achieve the limitation of the movement of the movable seat 6 and the scraper thereon in the stand 1, limiting studs 20 are provided on both sides of the stand 1, and the screw heads of the limiting studs 20 correspond to the end faces of the guide sleeve 5. The guide sleeve 5 moves between the limiting studs 20 on both sides, thereby forming a mechanical limitation for the movement of the guide sleeve 5.
[0021] In order to control the telescopic drive of the telescopic cylinder 9 according to the real-time position of the moving seat 6, a switch bracket 21 is further provided on the stand 1 on the lower side of the limit stud 20. A detection switch 22 is installed on the switch bracket 21. When the guide sleeve 5 moves to the extreme position on both sides, it can be identified by the detection switch 22. The detection switch 22 is connected to the oil circuit control system of the telescopic cylinder 9 through a control circuit. When it is necessary to scrape the sand box, the piston rod of the telescopic cylinder 9 extends, driving the moving seat 6 and the scraper thereon to move together. When the guide sleeve 5 moves to be identified by the detection switch 22, the oil circuit control system supplies oil to the contraction oil circuit of the telescopic cylinder 9, allowing the piston rod to retract, driving the moving seat 6 and the scraper thereon to move and reset together. When the guide sleeve 5 moves to be identified by the detection switch 22 on the side close to the telescopic cylinder 9, it stops retracting and completes the reset, so as to facilitate the scraping operation of the sand mold at the bottom of the next sand box.
[0022] Furthermore, in order to realize the installation of the telescopic cylinder 9 on the stand 1, a support frame 23 is installed on the upper side of the stand 1, and a support 24 is provided at the end of the support frame 23 away from the stand 1. The support 24 is hingedly installed on the cylinder barrel of the telescopic cylinder 9, and an earring 25 is provided at the end of the piston rod of the telescopic cylinder 9. The movable seat 6 is provided with a connecting shaft 26 that cooperates with the earring 25. The overall telescopic cylinder 9 is equivalent to being hingedly installed between the movable seat 6 and the support frame 23, which is convenient for the disassembly and assembly of the telescopic cylinder 9 and can also improve the connection strength of the telescopic cylinder 9 on the stand 1 to a certain extent.
[0023] Furthermore, to enhance the integrity and strength of the stand 1, a horizontally arranged connecting frame 27 is installed within the stand 1, and the connecting frame 27 is arranged parallel to the guide rod 4. To prevent dust and other debris from entering between the guide sleeve 5 and the guide rod 4 and affecting the normal movement of the guide sleeve 5 on the guide rod 4, protective covers 28 are installed at both ends of the guide sleeve 5 in the longitudinal direction, and the protective covers 28 are located on the outer periphery of the guide rod 4.
[0024] When scraping the sand mold at the bottom of the sand box, the first scraper 7 and the second scraper 8 need to move along the width direction of the sand box. After the scraping is completed, they need to move in the opposite direction to reset. In order to allow the scraper to protect the horizontal scraper above it when moving and resetting, it is necessary to avoid collision or interference with other structures in the device, such as Figure 6-8As shown, a rotatable swing frame 29 is hingedly installed in the movable seat 6, and a first scraper 7 and a second scraper 8 are installed on the swing frame 29. A first protrusion 30 and a second protrusion 31 are provided on the swing frame 29. The piston rod of the telescopic cylinder 9 is hingedly installed on the first protrusion 30, and a first limit block 32 cooperating with the first protrusion 30 and a second limit block 33 cooperating with the second protrusion 31 are provided in the movable seat 6.
[0025] When it is necessary to scrape the sand mold at the bottom of the sand box, the piston rod of the telescopic cylinder 9 is extended, first driving the swing frame 29 to rotate until the first protrusion 30 contacts the first limit block 32. At this time, the first scraper 7 and the second scraper 8 rotate close to the bottom of the sand box. Then the telescopic cylinder 9 continues to extend, driving the swing frame 29 and the movable seat 6 to extend together, so that the sand mold can be scraped off.
[0026] When the scraper moves to reset after scraping is completed, when the piston rod of the telescopic cylinder 9 contracts, it first drives the swing frame 29 to rotate until the second protrusion 31 contacts the second limit block 33, and the first scraper 7 and the second scraper 8 rotate away from the bottom of the sand box and can enter the space in the moving seat 6 to form necessary protection. After that, the telescopic cylinder 9 continues to contract, driving the swing frame 29 and the moving seat 6 to retract together, completing the movement and reset. In the process of movement and reset, the first scraper 7 and the second scraper 8 can enter the moving seat 6 to form protection, avoiding collision or interference with other structures in the device, which not only ensures the normal operation of subsequent sand mold scraping, but also extends the service life of the scraper to a certain extent.
[0027] The arrangement of the second protrusion 31 and the second limit block 33 can prevent the hinge point position of the swing frame 29, the hinge point position of the piston rod of the telescopic oil cylinder 9 and the first protrusion 30, and the hinge point position of the cylinder barrel of the telescopic oil cylinder 9 from being stuck in a collinear manner during the retraction process of the telescopic oil cylinder 9, thereby allowing the telescopic oil cylinder 9 to be repeatedly extended and retracted to achieve the advancement and retraction of the scraper, and the scraper can also rotate to the right position during advancement. Figure 7 The scraping state shown is in Figure 8 Deflection downwards shown.
[0028] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all well-known technologies.
Claims
1. An active sand scraping mechanism, characterized in that: The invention comprises a stand (1), a sand box support frame (2) is provided on the top of the stand (1), a supporting roller (3) is provided on the inner side of the sand box support frame (2), a horizontally arranged guide rod (4) is provided inside the stand (1), a guide sleeve (5) is mounted on the guide rod (4), a movable seat (6) is connected to the guide sleeve (5), a first scraper (7) and a second scraper (8) are mounted on the movable seat (6), wherein the position of the second scraper (8) is higher than the position of the first scraper (7), a telescopic oil cylinder (9) is mounted on one side of the stand (1), a piston rod of the telescopic oil cylinder (9) is connected to the movable seat (6), and the piston rod of the telescopic oil cylinder (9) is extended to drive the scraper on the movable seat (6) to move from one side of the width direction of the bottom of the sand box to the other side.
2. The active sand scraping mechanism according to claim 1, characterized in that: The first scraper (7) includes a first blade holder (10), a first transverse scraper (11) is mounted on the front end of the first blade holder (10) via a first pressing plate (34), the second scraper (8) includes a second blade holder (12), a second transverse scraper (14) is mounted on the front end of the second blade holder (12) via a second pressing plate (13), and the first blade holder (10) and the second blade holder (12) are both mounted on the movable seat (6) via fastening bolts (17).
3. The active sand scraping mechanism according to claim 2, characterized in that: The lower ends of the first scraper (7) and the second scraper (8) are both provided with a scraper height adjustment mechanism, the scraper height adjustment mechanism comprising an adjusting screw sleeve (15) arranged on the movable seat (6), an adjusting bolt (16) being installed in the adjusting screw sleeve (15), the end of the adjusting bolt (16) being in contact with the knife seat, wherein the first knife seat (10) is provided with a first long groove (18) which is matched with the fastening bolt (17), and the second knife seat (12) is provided with a second long groove (19) which is matched with the fastening bolt (17).
4. The active sand scraping mechanism according to claim 1, characterized in that: Limit studs (20) are provided on both sides of the interior of the stand (1), and the guide sleeve (5) moves between the limit studs (20) on both sides. A switch bracket (21) is also provided on the stand (1) below the limit studs (20), and a detection switch (22) is installed on the switch bracket (21). When the guide sleeve (5) moves to the extreme positions on both sides, it can be identified by the detection switch (22). The detection switch (22) is connected to the oil circuit control system of the telescopic oil cylinder (9) through a control circuit.
5. The active sand scraping mechanism according to claim 1, characterized in that: A support frame (23) is installed on the upper side of the stand (1), and a support (24) is provided at the end of the support frame (23) away from the stand (1). The support (24) is hingedly installed on the cylinder barrel of the telescopic oil cylinder (9), and an earring (25) is provided at the end of the piston rod of the telescopic oil cylinder (9). A connecting shaft (26) that matches the earring (25) is provided on the movable seat (6).
6. The active sand scraping mechanism according to claim 1, characterized in that: A horizontally arranged connecting frame (27) is installed in the stand (1), and the connecting frame (27) is arranged parallel to the guide rod (4). Protective covers (28) are installed at both ends of the guide sleeve (5) in the longitudinal direction, and the protective covers (28) are located on the outer periphery of the guide rod (4).
7. The active sand scraping mechanism according to claim 1, characterized in that: A rotatable swing frame (29) is hingedly mounted in the movable seat (6), a first scraper (7) and a second scraper (8) are mounted on the swing frame (29), a first convex block (30) and a second convex block (31) are provided on the swing frame (29), a piston rod of the telescopic oil cylinder (9) is hingedly mounted on the first convex block (30), a first limiting block (32) matched with the first convex block (30) and a second limiting block (33) matched with the second convex block (31) are provided in the movable seat (6), and when the piston rod of the telescopic oil cylinder (9) is extended, the first limiting block (32) is engaged with the first convex block (30) and the second limiting block (33) is engaged with the second convex block (31). The swing frame (29) is driven to rotate until the first protrusion (30) contacts the first limit block (32), and the first scraper (7) and the second scraper (8) rotate close to the bottom of the sand box, and then the swing frame (29) and the movable seat (6) are driven to extend together. When the piston rod of the telescopic oil cylinder (9) is retracted, the swing frame (29) is first driven to rotate until the second protrusion (31) contacts the second limit block (33), and the first scraper (7) and the second scraper (8) rotate away from the bottom of the sand box, and then the swing frame (29) and the movable seat (6) are driven to retract together.