A sanding device

Abstract

The utility model provides a kind of sand scraping device, belong to casting production line technical field, including base, lifting assembly and scraping mechanism, the lifting assembly is set on the base, the scraping mechanism is moved and is set on the base by the lifting assembly, the scraping mechanism has preparation position and sand scraping position, the lifting assembly drives the scraping mechanism and carries out position switching between the preparation position and the sand scraping position, the scraping mechanism includes scraping piece, the scraping piece is moved and is set on the lifting assembly, the scraping piece has abutting position and far position, when the scraping piece is located in the abutting position, the scraping piece is contacted with sand box inner wall, when the scraping piece is located in the far position, the scraping piece has gap with sand box inner wall between it. After scraping mechanism enters sand box, make scraping piece and sand box inner wall contact, when scraping mechanism enters sand box, prevent interference between scraping mechanism and sand box, the case that scraping mechanism is difficult to enter sand box occurs.

Description

Technical Field

[0001] This utility model belongs to the technical field of casting production line, and in particular relates to a sand scraping device. Background Technology

[0002] A sand mold box is a foundry device used to manufacture sand molds. Its main functions are: filling with sand, which involves filling the sand box with loose molding sand and compacting the sand by using different methods such as vibration, compaction, shock pressing, and injection pressing to compact the loose molding sand in the sand box, so that the sand mold has the necessary strength during handling and pouring; and removing the mold, which involves using different mechanisms to remove the pattern from the compacted sand mold.

[0003] Cleaning the inner wall of the sand box in a static pressure molding machine is a crucial and challenging part of the sand mold making process. During the compaction, pouring, and demolding processes in the molding process, sand spots and blocks will remain on the inner wall of the sand box. If the cleaning is not thorough, the sand spots and blocks will gradually accumulate and harden, directly leading to molding failure and box collapse. This problem urgently needs to be solved. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a sand scraping device to solve the problems of sand spots and sand blocks remaining on the inner wall of the sand box in the prior art, which can lead to molding failure and box collapse.

[0005] To achieve the above and other related objectives, this utility model provides a sand-scraping device, including a base, a lifting assembly, and a scraping mechanism. The lifting assembly is disposed on the base, and the scraping mechanism is movably disposed on the base via the lifting assembly. The scraping mechanism has a ready position and a sand-scraping position. The lifting assembly drives the scraping mechanism to switch positions between the ready position and the sand-scraping position. The scraping mechanism includes a scraper, which is movably disposed on the lifting assembly. The scraper has a contact position and a distance position. When the scraper is located in the sand-scraping position and in the contact position, the scraper is in contact with the inner wall of the sand box. When the scraper is located in the distance position, there is a gap between the scraper and the inner wall of the sand box.

[0006] Optionally, the scraping mechanism further includes a driving member disposed on the lifting assembly and moving with the lifting assembly. The driving member is used to push the scraper from the distance position to the contact position.

[0007] Optionally, the scraping mechanism further includes a transmission assembly, which is disposed on the lifting assembly. The scraper is movably disposed on the lifting assembly via the transmission assembly. The transmission assembly includes a reset elastic element and a transmission seat. The scraper is movably disposed on the transmission seat. The reset elastic element is disposed between the scraper and the transmission seat. The reset elastic element is used to drive the scraper from the abutment position back to the distance position.

[0008] Optionally, the driving member is rotatably mounted on the lifting assembly, and the driving member has a driving structure. The base is provided with a toggle member, which is configured corresponding to the driving structure. The toggle member is located on the movement track of the driving structure. When the toggle member contacts the driving structure, the driving member contacts the transmission assembly and drives the scraper from the distance position to the abutment position. When the toggle member moves away from the driving structure, the scraper is located at the distance position.

[0009] Optionally, the actuating element includes a mounting base and a contact for contacting the drive structure, the contact being movably disposed on the mounting base, and an adjusting spring being disposed between the contact and the mounting base.

[0010] Optionally, the contact head is provided with an anti-wear roller, which is used to roll on the drive structure.

[0011] Optionally, the driving structure is a driving protrusion, which is disposed on the driving member along the movement direction of the lifting assembly.

[0012] Optionally, the scraper is elongated, and the lifting assembly is provided with two scrapers arranged side by side. The part of the scraper that contacts the inner wall of the sand box is the scraping part, and the scraping parts of the two scrapers are arranged opposite to each other.

[0013] Optionally, each scraper is provided with two driving members and two transmission components, and each of the scrapers is provided with a transmission component at both ends.

[0014] Optionally, a limiting structure is provided between the lifting assembly and the base. The limiting structure includes a guide sleeve disposed on the base and a lifting rod passing through the guide sleeve. The axial direction of the guide sleeve extends along a first direction, which is the movement direction of the lifting assembly.

[0015] As described above, the sand-scraping device of this utility model has the following beneficial effects:

[0016] By setting up a lifting assembly, the scraping mechanism can be placed inside the sand box to facilitate its scraping work. By setting a movable scraper on the lifting assembly, the scraper can contact the inner wall of the sand box after the scraping mechanism enters it, thus preventing interference between the scraping mechanism and the sand box and avoiding situations where the scraping mechanism has difficulty entering the sand box. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the sand scraping device according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0019] Figure 3 This is a schematic diagram of the structure of the driving component in an embodiment of the present utility model;

[0020] Figure 4 This is a schematic diagram of the transmission assembly, clamping plate, scraper connecting seat and scraper according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the actuating component according to an embodiment of the present utility model;

[0022] Figure 6 This is a top view of the sand-scraping device according to an embodiment of the present invention.

[0023] Labeling: Base 1, Guide sleeve 101, Drive component 2, Adjusting roller 201, Drive protrusion 202, Lifting assembly 3, Lifting rod 301, Lifting seat 302, Power output component 4, Power output shaft 401, Fixed rod 5, Rotating shaft 6, Transmission assembly 7, Transmission seat 701, Slide rod 702, Return spring 703, Lubrication chamber 704, Sealing ring 705, Nylon seat 706, Scraper 8, Actuating component 9, Mounting seat 901, Limit seat 902, Adjusting spring 903, Limit hole 904, Anti-wear roller 905, Contact 906, Sand box 10, First position sensor 11, Second position sensor 12, Clamping plate 13, Scraper connecting seat 14. Detailed Implementation

[0024] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0025] Please see Figures 1 to 6It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0026] In order to describe this utility model in detail, the following is a specific description of a sand-scraping device of this utility model:

[0027] Please combine Figures 1 to 6 As shown, this utility model provides a sand scraping device, including a base 1, a lifting assembly 3, and a scraping mechanism. The lifting assembly 3 is disposed on the base 1, and the scraping mechanism is movably disposed on the base 1 via the lifting assembly 3. The scraping mechanism has a ready position and a scraping position. When the scraping mechanism is in the ready position, it is located outside the sand box. When the scraping mechanism is in the scraping position, it is located inside the sand box. The lifting assembly 3 drives the scraping mechanism to switch positions between the ready position and the scraping position. The scraping mechanism includes a scraper 8, which is movably disposed on the lifting assembly 3. The scraper 8 has a contact position and a distance position. When the scraper 8 is in the scraping position and in the contact position, the scraper 8 is connected to the inner wall of the sand box 10. When the scraper 8 is in the scraping position and in the distance position, there is a gap between the scraper 8 and the inner wall of the sand box 10. By setting the lifting assembly 3, the scraping mechanism can be placed into the sand box 10 to facilitate the scraping operation. By setting a movable scraper 8 on the lifting assembly 3, the scraper 8 can be made to contact the inner wall of the sand box 10 after the scraping mechanism is placed into the sand box 10. When the scraping mechanism enters the sand box 10, interference between the scraping mechanism and the sand box 10 is prevented, thus preventing the scraping mechanism from having difficulty entering the sand box 10.

[0028] The scraping mechanism also includes a drive component 2 and a reset elastic component. The drive component 2 is mounted on the lifting assembly 3 and moves with the lifting assembly 3. The drive component 2 is used to push the scraper 8 from the far-away position to the abutment position through the transmission assembly 7. Driving the scraper 8 by the drive component 2 can improve the automation level of the sand scraping device.

[0029] like Figure 4As shown, the scraping mechanism also includes a transmission assembly 7, which is mounted on the lifting assembly 3. The scraper 8 is movably mounted on the lifting assembly 3 via the transmission assembly 7. The transmission assembly 7 includes a reset elastic element and a transmission seat 701. The scraper 8 is movably mounted on the transmission seat 701, and the reset elastic element is located between the scraper 8 and the transmission seat 701. The reset elastic element is used to drive the scraper 8 from the contact position back to the distance position. By setting a reset spring 703, after the driving member 2 drives the scraper 8 to the contact position, and the driving member 2 releases the force on the scraper 8, the scraper 8 returns to the distance position via the reset spring 703. When the scraping mechanism reaches the sand-scraping position, the scraper should be located at the top of the sand box 10, near the opening of the sand box 10. When the lifting assembly 3 drives the scraper 8 to move along the first direction towards the bottom of the sand box 10, the sand spots and sand blocks in the sand box 10 can be removed more thoroughly.

[0030] In this embodiment, the driving component 2 is rotatably mounted on the lifting assembly 3, and the driving component 2 has a driving structure. A toggle component 9 is mounted on the base 1, and the toggle component 9 is connected to the base 1 by bolts and nuts. The toggle component 9 is positioned corresponding to the driving structure and is located on the movement track of the driving structure. When the toggle component 9 contacts the driving structure, the driving component 2 contacts the transmission assembly 7, driving the scraper 8 from a distance position to a contact position. When the toggle component 9 moves away from the driving structure, the scraper 8 is in the distance position. The driving structure and the toggle component 9 work together to drive the driving component 2, resulting in a stable driving effect and convenient production and assembly.

[0031] like Figure 5 As shown, in this embodiment, the actuating member 9 includes a mounting base 901 and a contact 906 for contacting the driving structure. The contact 906 is movably mounted on the mounting base 901. An adjusting spring 903 is provided between the contact 906 and the mounting base 901. The actuating member 9 also includes a limiting seat 902 with a limiting hole 904. The adjusting spring 903 and at least part of the contact 906 are accommodated in the limiting hole 904, which limits the travel direction of the contact 906. The sand scraping device can adaptively adjust the clamping force between the scraper 8 and the inner wall of the sand box 10 by adjusting the elasticity of the adjusting spring 903. This allows the pressure when the scraper 8 contacts the inner wall of the sand box 10 to be adaptively adjusted by the adjusting spring 903 after repeated use and wear. Simultaneously, an anti-wear roller 905 is provided on the contact 906 for rolling on the driving structure. The anti-wear roller 905 can convert the sliding friction between the drive component 2 and the actuating component 9 into static friction when the drive component 2 moves with the lifting component 3, thereby avoiding large wear between the drive component 2 and the actuating component 9 and reducing the frequency of maintenance and replacement of the drive component 2 and the actuating component 9.

[0032] like Figure 1 and Figure 2As shown, in this embodiment, the lifting assembly 3 includes a lifting seat 302 and two lifting rods 301. Both lifting rods 301 are mounted on the base 1 along a first direction and are respectively connected to the lifting seat 302. The base 1 is also provided with a power output component 4 for connecting to the lifting seat 302. The power output component 4 has a power output shaft 401 that moves along the first direction. The power output shaft 401 is mounted on the base 1 and connected to the lifting seat 302, and is used to drive the lifting seat 302 to move along the first direction. The drive component 2 is rotatably mounted on the power output shaft 401 via the rotating shaft 6. The drive component 2 is elongated and has a drive structure, which is a drive protrusion 202. The drive protrusion 202 is mounted on the drive component 2 along the movement direction of the lifting component 3. The end of the drive component 2 closer to the transmission component 7 is the first end, and the end of the drive component 2 away from the transmission component 7 is the second end. The drive shaft is located between the first end and the second end. The drive protrusion 202 is located between the second end and the rotating shaft 6 and protrudes towards the actuating component 9 along the second direction. When the actuating element 9 applies force to the driving element 2, the actuating element 9 is not in contact with the driving protrusion 202, and at this time, the second end of the driving element 2 is close to the power output shaft 401. When the actuating element 9 applies force to the driving element 2, the actuating element 9 contacts the driving protrusion 202, and the actuating element 9 cooperates with the driving protrusion 202 to generate a thrust on the driving element 2 in a direction away from the power output shaft 401, thereby causing the second end of the driving element 2 to move in a direction away from the power output shaft 401. The driving element 2 rotates around the rotating shaft 6, thereby causing the first end of the driving element 2 to move towards the transmission assembly 7, pushing the scraper 8 to contact the inner wall of the sand box 10 to scrape off sand spots and sand blocks from the inner wall of the sand box 10. The first direction is perpendicular to the second direction, the first direction is the height direction of the sand box 10, and the second direction is the length direction or width direction of the sand box 10. The power output component 4 can be a motor, a lead screw, and a nut drive. The motor's rotating shaft is connected to and coaxially mounted with the lead screw. A nut is fitted onto the lead screw and threadedly connected to it. A power output shaft 401 is mounted on the nut. When the nut slides on the lead screw, it drives the power output shaft to move along a first direction. Alternatively, the power output component 4 can be a linear motor or a cylinder. The type of power output component 4 can be adjusted according to actual needs.

[0033] In some embodiments, the drive member 2 can be driven by a linear motor or a slide table to push the scraper 8 into contact with the inner wall of the sand box 10. In other embodiments, the drive member 2 is provided with a clearance groove. When the drive member 2 is not pushing the scraper 8 into contact with the inner wall of the sand box 10, at least part of the rotating shaft 6 on the drive member 2 and the second end are located within the clearance groove. At this time, the part of the drive member 2 located within the clearance groove is the active part. When the lifting assembly 3 drives the drive member 2 to move, so that the active part is outside the clearance groove, the drive member 2 drives the scraper 8 to contact with the inner wall of the sand box 10. The way the drive member 2 moves can be adjusted according to actual use and production assembly requirements.

[0034] In this embodiment, the transmission assembly 7 is disposed on the side of the lifting seat 302 facing the sand box 10. The transmission assembly 7 also includes a slide rod 702. The transmission seat 701 has a through hole and a lubrication cavity 704 containing a lubricating medium. The through hole passes through and communicates with the lubrication cavity 704. The slide rod 702 passes through the through hole. The lubricating medium in the lubrication cavity 704 can lubricate the movement of the slide rod 702. Nylon seats 706 for sealing the through hole are provided at both ends of the through hole. A sealing ring 705 is also provided between the nylon seat 706 and the slide rod 702. To prevent the lubricating medium from flowing out of the lubrication cavity 704 and the through hole, one end of the slide rod 702 is connected to the drive member 2 as the drive end, and the other end of the slide rod 702 is connected to the scraper 8 as the connection end. The return spring 703 is set between the transmission seat 701 and the drive end and is sleeved on the slide rod 702. The radius of the drive end of the slide rod is larger than the radius of the part between the drive end and the connection end of the slide rod to increase the contact area with the drive member 2. An adjusting roller 201 is provided on the first end of the drive member 2 to facilitate adaptive adjustment of the position between the drive member 2 and the slide rod. The connection end of the slide rod is connected to the scraper connecting seat 14. Two clamping plates 13 are provided on the scraper connecting seat 14. The scraper 8 is connected to the scraper by being clamped between the two clamping plates 13. The scraper 8 and the two clamping plates 13 are connected by bolts and nuts to ensure the stability of the connection of the scraper 8.

[0035] The scraper 8 is elongated and has two components on the lifting assembly 3. Each scraper 8 extends along a second direction and is arranged side by side. The part of the scraper 8 that contacts the inner wall of the sand box 10 is the scraping part, and the scraping parts of the two scrapers 8 are arranged opposite to each other. By using two scrapers 8, sand spots and sand blocks on opposite sides of the inner wall of the sand box 10 can be scraped off, resulting in high work efficiency and energy saving.

[0036] Specifically, each scraper 8 is provided with two driving components 2 and two transmission components 7, with a transmission component 7 at each end of each scraper 8. Since the scraper 8 is elongated, the presence of a transmission component 7 at each end of the scraper 8 ensures a proper pushing effect on the scraper 8 and prevents uneven contact between the scraper 8 and the inner wall of the sand box 10 from affecting the scraping effect.

[0037] A limiting structure is provided between the lifting component 3 and the base 1. The limiting structure includes a guide sleeve 101 mounted on the base 1 and a lifting rod 301 passing through the guide sleeve 101. The axial direction of the guide sleeve 101 extends along a first direction, which is the direction of movement of the lifting component 3. By providing the limiting structure, the direction of movement of the lifting component 3 can be limited, thereby improving the stability of the sand scraping device during operation.

[0038] In this embodiment, the sand-scraping device further includes a first position sensor 11 and a second position sensor 12. A fixed rod 5 extending along a first direction is provided on the power output component 4. The first position sensor 11 and the second position sensor 12 are sequentially spaced along the fixed rod 5 along the first direction. A sensing element corresponding to the first position sensor 11 and the second position sensor 12 is provided on the end of the lifting rod away from the lifting base. When the scraping mechanism is in the ready position, the sensing element on the lifting rod 301 is within the sensing range of the first position sensor 11. When the scraping mechanism is in the sand-scraping position, the sensing element on the lifting rod 301 is within the sensing range of the second position sensor 12. Both the first position sensor 11 and the second position sensor 12 can be distance sensors, and their types can be adjusted according to actual usage needs.

[0039] In this embodiment, sand boxes 10 whose inner walls need to be cleaned are placed sequentially on the conveyor belt of a conveyor. The conveyor has a scraping station, and a scraping device is set corresponding to the scraping station. When a sand box 10 on the conveyor reaches the scraping station, the conveyor stops running. The scraping mechanism of the scraping device descends from the ready position to the scraping position via the lifting component 3, enters the sand box 10 and approaches the opening of the sand box 10. The scraper 8 moves from the far-away position to the abutment position, thereby abutting the inner wall of the sand box 10. The scraping mechanism continues to descend to the bottom of the sand box 10 via the lifting assembly 3 to scrape away sand blocks and sand spots inside the sand box 10. Then, the scraper 8 moves from the contact position to the distance position. There is a gap between the scraper 8 and the inner wall of the sand box 10 so that the scraping mechanism can rise from the scraping position to the preparation position via the lifting assembly 3, waiting for the next sand box 10 whose inner wall needs to be cleaned. The conveyor starts, and another sand box 10 arrives at the scraping station under the drive of the conveyor belt. By repeating the above steps, the sand blocks and sand spots on the inner wall of the sand box 10 are scraped away. By repeating the above steps, the sand boxes 10 on the conveyor belt can be scraped in sequence to remove the sand blocks and sand spots on the inner wall of the sand box 10, thus achieving the purpose of automated batch scraping of sand blocks and sand spots on the inner wall of the sand box 10. The arrival of the sand box 10 at the scraping station can be detected by a sensor.

[0040] In summary, by setting the lifting assembly 3, the scraping mechanism can be placed inside the sand box 10 to facilitate the scraping operation. By setting a movable scraper 8 on the lifting assembly 3, the scraper 8 can contact the inner wall of the sand box 10 after the scraping mechanism enters the sand box 10. This prevents interference between the scraping mechanism and the sand box 10 when the scraping mechanism enters the sand box 10, thus preventing the scraping mechanism from having difficulty entering the sand box 10.

[0041] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sand-scraping device, characterized in that, The device includes a base, a lifting assembly, and a scraping mechanism. The lifting assembly is mounted on the base, and the scraping mechanism is movably mounted on the base via the lifting assembly. The scraping mechanism has a ready position and a scraping position. The lifting assembly drives the scraping mechanism to switch positions between the ready position and the scraping position. The scraping mechanism includes a scraper, which is movably mounted on the lifting assembly. The scraper has a contact position and a distance position. When the scraper is in the scraping position and in the contact position, the scraper is in contact with the inner wall of the sand box. When the scraper is in the distance position, there is a gap between the scraper and the inner wall of the sand box.

2. The sand-scraping device according to claim 1, characterized in that: The scraping mechanism further includes a driving member, which is disposed on the lifting assembly and moves with the lifting assembly. The driving member is used to push the scraper from the distance position to the contact position.

3. The sand-scraping device according to claim 2, characterized in that: The scraping mechanism further includes a transmission assembly, which is disposed on the lifting assembly. The scraper is movably disposed on the lifting assembly via the transmission assembly. The transmission assembly includes a reset elastic element and a transmission seat. The scraper is movably disposed on the transmission seat. The reset elastic element is disposed between the scraper and the transmission seat. The reset elastic element is used to drive the scraper from the abutment position back to the distance position.

4. The sand-scraping device according to claim 3, characterized in that: The driving component is rotatably mounted on the lifting assembly, and the driving component has a driving structure. The base is provided with a toggle component, which is arranged corresponding to the driving structure. The toggle component is located on the movement track of the driving structure. When the toggle component contacts the driving structure, the driving component contacts the transmission assembly and drives the scraper from the distance position to the abutment position. When the toggle component moves away from the driving structure, the scraper is located at the distance position.

5. The sand-scraping device according to claim 4, characterized in that: The actuating element includes a mounting base and a contact for contacting the drive structure. The contact is movably mounted on the mounting base, and an adjusting spring is provided between the contact and the mounting base.

6. The sand-scraping device according to claim 5, characterized in that: The contact is provided with an anti-wear roller, which is used to roll on the drive structure.

7. The sand-scraping device according to claim 4, characterized in that: The driving structure is a driving protrusion, which is arranged on the driving member along the movement direction of the lifting assembly.

8. The sand-scraping device according to any one of claims 3-7, characterized in that: The scraper is long and narrow. Two scrapers are provided on the lifting assembly. The two scrapers are arranged side by side. The part of the scraper that contacts the inner wall of the sand box is the scraping part. The scraping parts of the two scrapers are arranged opposite to each other.

9. The sand-scraping device according to claim 8, characterized in that: Each scraper is provided with two driving components and two transmission components, and each scraper has a transmission component at both ends.

10. The sand-scraping device according to any one of claims 1-7, characterized in that: A limiting structure is provided between the lifting assembly and the base. The limiting structure includes a guide sleeve disposed on the base and a lifting rod passing through the guide sleeve. The axial direction of the guide sleeve extends along a first direction, which is the movement direction of the lifting assembly.

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