Sand prevention structure of sand blasting machine

Abstract

The utility model discloses a sand prevention structure of a sand blasting machine, which relates to the field of sand blasting machines and has the technical key points that the sand prevention structure comprises a case, a sand blasting cavity is arranged in the case, an adjusting device is arranged in the sand blasting cavity, a sand blasting head is arranged at the bottom of the adjusting device, buffer seats are arranged on two sides of the sand blasting cavity, and the buffer seats are connected with the sand blasting cavity. The buffer seat is located below the sand blasting head, a mounting cavity is formed in one side of the buffer seat, buffer cloth is arranged in the mounting cavity, the buffer cloth is made of a deformable material, a movable interval is formed between the buffer cloth and one side of the mounting cavity, fixing grooves are formed in the two ends of the mounting cavity, and the buffer cloth is arranged in the fixing grooves. A fixing plate is slidably connected into the fixing groove, and the technical problems that when high-speed sand flow impacts a hard protection plate, part of sand materials are reflected out, the rebounded sand materials fly away in the unpredictable direction, the damage range of a machine box is enlarged, and the risk of hurting operators exists are solved.

Description

Technical Field

[0001] This utility model relates to the field of sandblasting machines, and in particular to a sand-proof structure for sandblasting machines. Background Technology

[0002] Sandblasting is a process that uses the impact of high-speed sand jets to clean and roughen the surface of a substrate. It uses compressed air as power to form a high-speed jet stream that propels sand at high speed onto the surface of the workpiece to be treated, thereby changing the appearance or shape of the workpiece's outer surface. The sandblasting machine includes a casing, inside which is an adjustment device. Below the adjustment device is a sandblasting head. The adjustment device is used to adjust the sandblasting position of the sandblasting head to meet the treatment requirements of different workpieces.

[0003] However, since the adjustment device is usually fixed by bolts, and the sandblasting head sprays sand onto the workpiece surface under the action of high-speed airflow, this process will generate strong vibrations. The vibrations will be transmitted to the bolts, causing relative movement between the bolts and the threaded holes. Over time, this will lead to friction and wear, causing the bolt preload to gradually decrease. When the bolts loosen, the position of the sandblasting head will shift, causing the sandblasting head to spray towards both sides of the machine housing, resulting in damage to the machine housing.

[0004] To prevent damage to the inside of the chassis, protective plates are usually installed inside. The purpose of the protective plates is to intercept the deviating sand flow and protect the inside of the chassis from damage. However, since the protective plates are made of rigid materials, when a high-speed sand flow hits the rigid protective plate, some of the sand will be reflected back. The rebounded sand will fly in unpredictable directions, expanding the damage range of the chassis and posing a risk of injuring the operators. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a sand-proof structure for a sandblasting machine. The purpose is to solve the technical problem that when a high-speed sand stream hits a hard protective plate, some sand will be reflected away, and the rebounded sand will fly in an unpredictable direction, expanding the damage range of the machine casing and posing a risk of injuring the operator.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] A sand-proof structure for a sandblasting machine includes a casing with a sandblasting cavity inside. An adjustment device is located inside the sandblasting cavity, and a sandblasting head is located at the bottom of the adjustment device. Buffer seats are located on both sides of the sandblasting cavity, below the sandblasting head. An installation cavity is formed on one side of each buffer seat, and a buffer cloth, made of deformable material, is placed inside the installation cavity. The buffer cloth is separated from one side of the installation cavity by a movable gap. Fixed grooves are formed at both ends of the installation cavity, and fixed plates are slidably connected within these grooves. The fixed plates and the fixed grooves form a fixed gap. The two sides of the buffer cloth are located within the fixed gaps at both ends of the installation cavity, causing the fixed gaps at both ends of the installation cavity to abut against the two sides of the buffer cloth.

[0008] When the adjusting device causes the sandblasting head to shift due to vibration, the sandblasting head will blast the buffer cloth. Because the buffer cloth is made of deformable material, and the movable interval between the buffer cloth and the mounting cavity, as well as the fixed interval between the fixed plate and the fixed groove, allows the two sides of the buffer cloth to be clamped by the fixed plate in a tensioned state. The movable interval provides deformation space for the buffer cloth, which can absorb the impact force of the sand and prevent the sand from rebounding, thus enhancing the buffering effect and effectively reducing the rebound of the sand and minimizing damage to the inside of the sandblasting cavity.

[0009] Furthermore, in this application, a fixing spring is provided inside the fixing groove, and one end of the fixing spring is connected to the fixing plate.

[0010] The fixing spring inside the fixing groove is connected to the fixing plate, which can provide an elastic force to keep the fixing plate moving within the fixing groove. This makes it easy to pull the fixing plate to replace the cushioning cloth when it is damaged.

[0011] Furthermore, in this application, two connecting grooves are provided on one side of the buffer seat, and the two connecting grooves are respectively connected to the two fixed grooves. A movable rod is slidably connected in the connecting groove. One end of the movable rod passes through the interior of the adjacent fixed spring, and one end of the movable rod is connected to the adjacent fixed plate. The other end of the movable rod protrudes out of the connecting groove, and the other end of the movable rod is provided with a movable pull block.

[0012] The operator can easily pull the movable block to move the fixed plate. The movement of the fixed plate will compress or release the fixed spring, thereby changing the clamping area of ​​the cushioning cloth to change the tension of the cushioning cloth, so as to adapt to different sandblasting requirements or compensate for the wear of the cushioning cloth. Furthermore, by pulling the movable block to move the fixed plate, the operator can also easily replace the cushioning cloth.

[0013] Furthermore, in this application, a mounting post is provided on one side of the fixing plate, and first mounting protrusions are provided on both sides of the mounting post. The mounting post is inserted into one end of the fixing spring, so that the first mounting protrusions on both sides of the mounting post are engaged with one end of the fixing spring. An installation groove is provided in the fixing groove, and the installation groove communicates with the adjacent connecting groove. The size of the installation groove is larger than that of the connecting groove. Second mounting protrusions are provided on both sides of the installation groove. The other end of the fixing spring is inserted into the installation groove, so that the second mounting protrusions on both sides of the installation groove are engaged with the other end of the fixing spring.

[0014] Furthermore, in this application, mounting brackets are provided on both sides of the sandblasting cavity, and a guide slope is provided on one side of the mounting bracket. The two buffer seats are respectively installed on the guide slopes of the two mounting brackets. A flow groove is provided inside the sandblasting cavity, and the flow groove is located below the buffer seat.

[0015] Furthermore, in this application, the bottom of the chassis is provided with a collection base, a sand discharge cavity is provided on one side of the collection base, the sand discharge cavity is connected to the flow channel, a collection seat is slidably connected inside the sand discharge cavity, a collection cavity is provided on the top of the collection seat, and the collection cavity is connected to the flow channel.

[0016] Furthermore, in this application, guide sliders are provided on both sides of the collection seat, and guide grooves are provided on both sides of the sand discharge cavity. The guide sliders on both sides of the collection seat slide in cooperation with the guide grooves on both sides of the sand discharge cavity.

[0017] Furthermore, in this application, the adjusting device includes a support rod, an adjusting cylinder, an adjusting seat, and a first fixing bolt. The support rod is disposed inside the sandblasting cavity, the adjusting cylinder is sleeved outside the support rod, and the adjusting cylinder is slidably engaged with the support rod. The adjusting seat is disposed on one side of the adjusting cylinder, the sandblasting head is disposed at the bottom of the adjusting seat, and a first fixing hole is opened on one side of the adjusting cylinder. The first fixing hole communicates with the interior of the adjusting cylinder, and a first fixing bolt is threaded into the first fixing hole. The first fixing bolt abuts against the support rod.

[0018] Furthermore, in this application, the adjusting device further includes an adjusting rod and a sandblasting seat. The adjusting seat has an adjusting groove inside, the adjusting rod is slidably engaged with the adjusting groove, the sandblasting seat is located at the bottom of the adjusting rod, and the sandblasting head is located at the bottom of the sandblasting seat.

[0019] Furthermore, in this application, a second fixing hole is provided on one side of the adjusting seat, the second fixing hole communicates with the adjusting groove, and a second fixing bolt is threaded into the second fixing hole, the second fixing bolt abuts against the adjusting rod.

[0020] This utility model has the following beneficial effects:

[0021] When the adjusting device causes the sandblasting head to shift due to vibration, the sandblasting head will blast the buffer cloth. Because the buffer cloth is made of deformable material, and the movable interval between the buffer cloth and the mounting cavity, as well as the fixed interval between the fixed plate and the fixed groove, allows the two sides of the buffer cloth to be clamped by the fixed plate in a tensioned state. The movable interval provides deformation space for the buffer cloth, which can absorb the impact force of the sand and prevent the sand from rebounding, thus enhancing the buffering effect and effectively reducing the rebound of the sand and minimizing damage to the inside of the sandblasting cavity. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the structure of the collection base of this utility model.

[0024] Figure 3 This is a schematic diagram of the sandblasting cavity of this utility model.

[0025] Figure 4 This is a structural schematic diagram of the support rod and adjusting rod of this utility model.

[0026] Figure 5 This is a schematic diagram of the fixed interval structure of this utility model.

[0027] Figure 6 This is a structural schematic diagram of the mounting bracket of this utility model.

[0028] Figure 7 This is a structural schematic diagram of the fixing plate of this utility model.

[0029] Figure 8 This is a structural schematic diagram of the fixing groove of this utility model.

[0030] In the attached figures, the following labels are used:

[0031] 1. Chassis; 2. Collection base; 3. Sandblasting cavity; 4. Adjustment device; 5. Sandblasting head; 6. Fixed interval; 7. Sand discharge cavity; 8. Guide groove; 9. Collection seat; 10. Guide slider; 11. Collection cavity; 12. Support rod; 13. Adjusting cylinder; 14. First fixing hole; 15. Adjusting seat; 16. Adjusting groove; 17. Second fixing hole; 18. Second fixing bolt; 19. Adjusting rod; 20. Sandblasting seat; 21. Mounting bracket; 22. Guide slope; 23. Buffer seat; 24. Mounting cavity; 25. Fixing groove; 26. Fixing plate; 27. Fixing spring; 28. Buffer cloth; 29. ​​Mounting column; 30. First mounting bracket protrusion; 31. Connecting groove; 32. Movable rod; 33. Movable pull block; 34. Mounting groove; 35. First fixing bolt; 36. Flow groove; 37. Second mounting bracket protrusion; 38. Movable interval. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] During sandblasting, the high-speed sand jet generates intense vibrations, which are mechanically transmitted to the fixing bolts of the adjusting device. Due to the continuity and periodicity of the vibration, minute relative movements occur between the bolts and the threaded holes, leading to gradual wear of the contact surfaces. As wear intensifies, the bolt preload gradually decreases, eventually causing the sandblasting head to shift position. This shift not only reduces the precision of the sandblasting process but also allows the high-speed sand jet to directly impact the inner wall of the machine casing, damaging the equipment.

[0036] At a metal parts processing company, a large sandblasting machine malfunctioned after three months of continuous operation. Initially, the operators only noticed uneven surface treatment on the workpieces and failed to detect that the sandblasting head had shifted. During a routine inspection, maintenance personnel discovered severe wear marks on multiple areas of the machine's inner wall, with some areas even showing penetrating damage. A detailed inspection revealed that this was due to loose fixing bolts on the adjusting device 4, causing the sandblasting head angle to deviate from its preset position. To prevent similar problems, the factory installed a rigid protective plate on the inner wall of the machine; however, this measure introduced a new problem: when the high-speed sand jet hit the protective plate, some of the sand would rebound strongly, causing secondary damage to other parts of the equipment.

[0037] Failure to address this issue will lead to multiple negative consequences: First, the deviated sand flow will accelerate wear on the inner wall of the casing, shortening the equipment's lifespan; second, while rigid protective plates can block the sand flow, the rebounding sand will cause wider damage to the equipment; third, the irregular rebound of sand increases the difficulty and cost of equipment maintenance. Furthermore, these problems will affect the stability of the sandblasting process and the processing quality of the workpiece, and may even create safety hazards due to sand rebound. Traditional rigid protective solutions can no longer meet the protective performance requirements of modern sandblasting equipment, necessitating the development of a new type of protective structure.

[0038] Reference Figures 1-8In some specific embodiments, a sandblasting machine's sand-proof structure includes a housing 1, a sandblasting cavity 3 inside the housing 1, an adjustment device 4 inside the sandblasting cavity 3, a sandblasting head 5 at the bottom of the adjustment device 4, buffer seats 23 on both sides of the sandblasting cavity 3, the buffer seats 23 being located below the sandblasting head 5, an installation cavity 24 being opened on one side of the buffer seat 23, a buffer cloth 28 being provided inside the installation cavity 24, the buffer cloth 28 being a deformable material, the buffer cloth 28 being separated from one side of the installation cavity 24 by a movable gap 38, fixing grooves 25 being opened at both ends of the installation cavity 24, fixing plates 26 being slidably connected inside the fixing grooves 25, the fixing plates 26 being separated from the fixing grooves 25 by a fixed gap 6, the two sides of the buffer cloth 28 being located within the fixed gaps 6 at both ends of the installation cavity 24, so that the fixed gaps 6 at both ends of the installation cavity 24 abut against the two sides of the buffer cloth 28.

[0039] Through the above technical solution, when the adjusting device 4 causes the sandblasting head 5 to shift due to vibration, the sandblasting head 5 will sandblast towards the buffer cloth 28. Since the buffer cloth 28 is made of deformable material, and the movable interval 38 between the buffer cloth 28 and the mounting cavity 24, as well as the fixed interval 6 between the fixed plate 26 and the fixed groove 25, allows the two sides of the buffer cloth 28 to be clamped by the fixed plate 26 in a tensioned state. The movable interval 38 provides deformation space for the buffer cloth 28, which can absorb the impact force of the sand and prevent the sand from rebounding, thus enhancing the buffering effect and effectively reducing the rebound of the sand and reducing the damage inside the sandblasting cavity 3.

[0040] In addition, the cushioning cloth 28 can be made of deformable materials such as abrasion-resistant synthetic fiber cloth, industrial non-woven cloth, polyurethane or rubber-coated cloth; among them, abrasion-resistant synthetic fiber cloth can deform when impacted by sand, absorb some of the impact energy, and recover its shape after the pressure is released; while non-woven cloth usually has a certain degree of flexibility and elasticity, and can deform according to the shape of the wrapped item, providing a highly adaptable cushioning effect; finally, polyurethane and rubber coating can provide good elasticity and deformation capacity, so that the material can absorb energy and protect the underlying structure when impacted by sand.

[0041] Reference Figures 5-8 In some specific embodiments, a fixing spring 27 is provided inside the fixing groove 25, and one end of the fixing spring 27 is connected to the fixing plate 26.

[0042] Through the above technical solution, the fixing spring 27 inside the fixing groove 25 is connected to the fixing plate 26, which can provide an elastic force to keep the fixing plate 26 movable in the fixing groove 25. Thus, when the buffer cloth 28 is damaged, it is easy to pull the fixing plate 26 to replace the buffer cloth 28.

[0043] Reference Figures 5-8In some specific embodiments, two connecting grooves 31 are provided on one side of the buffer seat 23. The two connecting grooves 31 are respectively connected to two fixed grooves 25. A movable rod 32 is slidably connected in the connecting groove 31. One end of the movable rod 32 passes through the interior of the adjacent fixed spring 27. One end of the movable rod 32 is connected to the adjacent fixed plate 26. The other end of the movable rod 32 protrudes out of the connecting groove 31. A movable pull block 33 is provided at the other end of the movable rod 32.

[0044] Through the above technical solution, the operator can easily pull the movable pull block 33 to move the fixed plate 26. The movement of the fixed plate 26 will compress or release the fixed spring 27. When the fixed plate 26 is released, the fixed spring 27 will apply pressure to the fixed plate 26 under the action of elasticity, so that the fixed plate 26 clamps the buffer cloth 28, thereby changing the clamping position of the buffer cloth 28 to change the tension of the buffer cloth 28, so as to adapt to different sandblasting requirements or compensate for the wear of the buffer cloth 28. In addition, by pulling the movable pull block 33 to move the fixed plate 26, the operator can also easily replace the buffer cloth 28.

[0045] Reference Figures 7-8 In some specific embodiments, a mounting post 29 is provided on one side of the fixing plate 26, and first mounting protrusions 30 are provided on both sides of the mounting post 29. The mounting post 29 is inserted into one end of the fixing spring 27, so that the first mounting protrusions 30 on both sides of the mounting post 29 are engaged with one end of the fixing spring 27. A mounting groove 34 is provided in the fixing groove 25, and the mounting groove 34 is connected to the adjacent connecting groove 31. The size of the mounting groove 34 is larger than that of the connecting groove 31. Second mounting protrusions 37 are provided on both sides of the mounting groove 34. The other end of the fixing spring 27 is inserted into the mounting groove 34, so that the second mounting protrusions 37 on both sides of the mounting groove 34 are engaged with the other end of the fixing spring 27.

[0046] Through the above technical solution, by setting an installation post 29 on one side of the fixing plate 26 and setting first installation protrusions 30 on both sides, one end of the fixing spring 27 is fixed to the installation post 29 by plugging and snapping. At the same time, an installation groove 34 is opened in the fixing groove 25 and a second installation protrusion 37 is set, so that the other end of the fixing spring 27 can also be fixed by plugging and snapping. Through this double-end snap-fit ​​fixing structure design, the fixing spring 27 can be effectively prevented from falling off during use, and the installation stability of the fixing spring 27 is enhanced.

[0047] Reference Figures 1-8 In some specific embodiments, the sandblasting cavity 3 is provided with mounting brackets 21 on both sides, and a guide slope 22 is provided on one side of the mounting bracket 21. Two buffer seats 23 are respectively installed on the guide slope 22 of the two mounting brackets 21. A flow groove 36 is provided inside the sandblasting cavity 3, and the flow groove 36 is located below the buffer seat 23.

[0048] Through the above technical solution, the design of the guide slope 22 can guide the sand to flow downward and reduce the accumulation of sand. The setting of the flow channel 36 below the buffer seat 23 forms a sand collection channel, which can effectively collect the sand that slides down from the buffer seat 23. This design can prevent the sand from accumulating on the buffer cloth 28 and realize the recycling of sand.

[0049] Furthermore, the flow channel 36 can be designed with a V-shaped or U-shaped cross-section, and its width can be set according to actual needs, typically between 10cm and 30cm. The bottom of the flow channel 36 can be set as a smooth slope with an inclination angle between 15° and 45° to facilitate the flow of sand. In addition, the material of the flow channel 36 can be selected from materials with good wear resistance, such as stainless steel or ceramic coating, to reduce friction and wear.

[0050] Reference Figures 1-6 In some specific embodiments, the bottom of the chassis 1 is provided with a collection base 2, and a sand discharge cavity 7 is opened on one side of the collection base 2. The sand discharge cavity 7 is connected to the flow channel 36. A collection seat 9 is slidably connected inside the sand discharge cavity 7. A collection cavity 11 is opened on the top of the collection seat 9. The collection cavity 11 is connected to the flow channel.

[0051] Through the above technical solution, the sand discharge cavity 7 opened on one side of the collection base 2 is connected to the flow channel 36, so that the sand can flow from the sandblasting space into the sand discharge cavity 7, ensuring that the collection cavity 11 of the collection seat 9 collects the sand. In addition, the sliding connection design of the collection seat 9 allows the operator to easily remove the collection seat 9 for cleaning, thus improving the cleaning efficiency.

[0052] Reference Figures 1-2 In some specific embodiments, guide sliders 10 are provided on both sides of the collecting seat 9, and guide grooves 8 are provided on both sides of the sand discharge cavity 7. The guide sliders 10 on both sides of the collecting seat 9 slide in cooperation with the guide grooves 8 on both sides of the sand discharge cavity 7.

[0053] Through the above technical solution, the guide sliders 10 set on both sides of the collecting seat 9 slide in cooperation with the guide grooves 8 on both sides of the sand discharge cavity 7, which can limit the movement direction of the collecting seat 9 and prevent the collecting seat 9 from shifting or shaking in the sand discharge cavity 7.

[0054] Reference Figure 4In some specific embodiments, the adjusting device 4 includes a support rod 12, an adjusting cylinder 13, an adjusting seat 15, and a first fixing bolt 35. The support rod 12 is located inside the sandblasting cavity 3, and the adjusting cylinder 13 is sleeved on the outside of the support rod 12. The adjusting cylinder 13 and the support rod 12 are slidably fitted together. The adjusting seat 15 is located on one side of the adjusting cylinder 13, and the sandblasting head 5 is located at the bottom of the adjusting seat 15. A first fixing hole 14 is opened on one side of the adjusting cylinder 13. The first fixing hole 14 communicates with the inside of the adjusting cylinder 13. The first fixing bolt 35 is threaded into the first fixing hole 14 and abuts against the support rod 12.

[0055] Through the above technical solution, the adjusting cylinder 13 is sleeved outside the support rod 12 and can slide, realizing the lateral position adjustment of the sandblasting head 5. By rotating the first fixing bolt 35, it can be made to abut against the support rod 12, thereby locking the position of the adjusting cylinder 13, so as to adjust the sandblasting position of the sandblasting head 5.

[0056] Reference Figure 4 In some specific embodiments, the adjusting device 4 also includes an adjusting rod 19 and a sandblasting seat 20. The adjusting seat 15 has an adjusting groove 16 inside, and the adjusting rod 19 slides in the adjusting groove 16. The sandblasting seat 20 is located at the bottom of the adjusting rod 19, and the sandblasting head 5 is located at the bottom of the sandblasting seat 20.

[0057] Reference Figure 4 In some specific embodiments, a second fixing hole 17 is provided on one side of the adjusting seat 15. The second fixing hole 17 is connected to the adjusting groove 16. A second fixing bolt 18 is threaded into the second fixing hole 17. The second fixing bolt 18 abuts against the adjusting rod 19.

[0058] Through the above technical solution, by setting an adjustment groove 16 inside the adjustment seat 15 and by the sliding fit structure between the adjustment rod 19 and the adjustment groove 16, the height of the sandblasting head 5 is adjusted. By rotating the second fixing bolt 18, it can be made to abut against the adjustment rod 19, thereby locking the position of the sandblasting seat 20, so as to adjust the sandblasting height position of the sandblasting head 5.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A sand-proof structure for a sandblasting machine, comprising a housing, wherein a sandblasting cavity is provided inside the housing, an adjustment device is provided inside the sandblasting cavity, and a sandblasting head is provided at the bottom of the adjustment device, characterized in that, The sandblasting cavity has buffer seats on both sides, which are located below the sandblasting head. One side of the buffer seat has an installation cavity, and a buffer cloth is placed inside the installation cavity. The buffer cloth is made of deformable material and is separated from one side of the installation cavity by a movable gap. Fixed grooves are formed at both ends of the installation cavity, and fixed plates are slidably connected in the fixed grooves. The fixed plates and the fixed grooves are separated by a fixed gap. The two sides of the buffer cloth are respectively located within the fixed gaps at both ends of the installation cavity, so that the fixed gaps at both ends of the installation cavity abut against the two sides of the buffer cloth.

2. The sand-proof structure of a sandblasting machine according to claim 1, characterized in that, A fixing spring is provided inside the fixing groove, and one end of the fixing spring is connected to the fixing plate.

3. The sand-proof structure of a sandblasting machine according to claim 2, characterized in that, Two connecting slots are provided on one side of the buffer seat. The two connecting slots are respectively connected to the two fixed slots. A movable rod is slidably connected in the connecting slot. One end of the movable rod passes through the interior of the adjacent fixed spring and is connected to the adjacent fixed plate. The other end of the movable rod protrudes out of the connecting slot and is provided with a movable pull block.

4. The sand-proof structure of a sandblasting machine according to claim 3, characterized in that, The fixing plate has a mounting post on one side, and first mounting protrusions on both sides of the mounting post. The mounting post is inserted into one end of the fixing spring, so that the first mounting protrusions on both sides of the mounting post are engaged with one end of the fixing spring. The fixing groove has a mounting groove, which is connected to the adjacent connecting groove. The size of the mounting groove is larger than that of the connecting groove. The mounting groove has second mounting protrusions on both sides of the mounting groove. The other end of the fixing spring is inserted into the mounting groove, so that the second mounting protrusions on both sides of the mounting groove are engaged with the other end of the fixing spring.

5. The sand-proof structure of a sandblasting machine according to claim 1, characterized in that, The sandblasting cavity is provided with mounting brackets on both sides, and a guide slope is provided on one side of the mounting bracket. The two buffer seats are respectively installed on the guide slopes of the two mounting brackets. A flow groove is provided inside the sandblasting cavity, and the flow groove is located below the buffer seat.

6. The sand-proof structure of a sandblasting machine according to claim 5, characterized in that, The bottom of the chassis is provided with a collection base, and a sand discharge cavity is opened on one side of the collection base. The sand discharge cavity is connected to the flow channel. A collection seat is slidably connected inside the sand discharge cavity. A collection cavity is opened on the top of the collection seat. The collection cavity is connected to the flow channel.

7. The sand-proof structure of a sandblasting machine according to claim 6, characterized in that, The collecting seat is provided with guide sliders on both sides, and the sand discharge cavity is provided with guide grooves on both sides. The guide sliders on both sides of the collecting seat slide in cooperation with the guide grooves on both sides of the sand discharge cavity.

8. The sand-proof structure of a sandblasting machine according to claim 1, characterized in that, The adjusting device includes a support rod, an adjusting cylinder, an adjusting seat, and a first fixing bolt. The support rod is located inside the sandblasting cavity, and the adjusting cylinder is sleeved on the outside of the support rod. The adjusting cylinder and the support rod are slidably fitted together. The adjusting seat is located on one side of the adjusting cylinder, and the sandblasting head is located at the bottom of the adjusting seat. A first fixing hole is opened on one side of the adjusting cylinder, and the first fixing hole communicates with the interior of the adjusting cylinder. A first fixing bolt is threaded into the first fixing hole, and the first fixing bolt abuts against the support rod.

9. The sand-proof structure of a sandblasting machine according to claim 8, characterized in that, The adjustment device also includes an adjustment rod and a sandblasting seat. The adjustment seat has an adjustment groove inside. The adjustment rod slides in the adjustment groove. The sandblasting seat is located at the bottom of the adjustment rod, and the sandblasting head is located at the bottom of the sandblasting seat.

10. The sand-proof structure of a sandblasting machine according to claim 9, characterized in that, A second fixing hole is provided on one side of the adjusting seat. The second fixing hole is connected to the adjusting groove. A second fixing bolt is threaded into the second fixing hole. The second fixing bolt abuts against the adjusting rod.

Images