A continuous tilting chain plate mechanism for shot blasting machines

Abstract

This invention belongs to the technical field of workpiece flipping, specifically relating to a continuous flipping chain plate mechanism for shot blasting machines. The mechanism includes a flipping device comprising a chain plate drive assembly, a chain plate driven assembly, a chain plate tensioning assembly, a chain, a workpiece bearing plate, a connecting rod, and a tensioning cavity. The chain plate drive assembly and the chain plate driven assembly are interconnected via the chain, with the drive assembly located on the right side of the chain and the driven assembly on the left side. The workpiece bearing plate is fixedly mounted on the chain. A tensioning mechanism is installed inside the tensioning cavity, and this mechanism is fixedly connected to the bottom end of the connecting rod. This device solves the current problems in shot blasting machines where rapid flipping is not possible, affecting shot blasting efficiency, and where the chain tension control method is simplistic and lacks precision, leading to chain slippage or breakage.

Description

Technical Field

[0001] This invention belongs to the technical field of workpiece flipping, and specifically relates to a continuous flipping chain plate mechanism for shot blasting machines. Background Technology

[0002] With market development and the adoption of various new technologies in the casting industry, product production efficiency is increasing, and product surface requirements are becoming more stringent. For surface treatment of castings on continuous production lines, shot blasting equipment needs to ensure full passability for various workpieces without manual assistance. For some workpieces prone to impact, a mechanism is needed to automatically flip them during shot blasting to ensure thorough cleaning without dead angles. Currently, equipment for workpiece flipping and cleaning on the market generally uses high and low step flipping mechanisms, which have a low flipping probability and cannot handle continuous flipping. Therefore, a special chain plate mechanism has emerged, solving the problem of continuous workpiece flipping and cleaning without causing impact to the workpiece. It has low operating costs, a simple structure, and is easy to maintain. Furthermore, if the chain becomes loose or the tension is insufficient during flipping, it can cause the chain to fall off, hindering high-efficiency shot blasting. This solution allows for precise tension control, thus fully protecting the chain. Summary of the Invention

[0003] The purpose of this invention is to provide a continuous tilting chain plate mechanism for shot blasting machines to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a continuous tilting chain plate mechanism for a shot blasting machine, comprising a tilting device, the tilting device comprising a chain plate drive assembly, a chain plate driven assembly, a chain plate tensioning assembly, a chain, a workpiece bearing plate, a connecting rod, and a tensioning cavity; the chain plate drive assembly and the chain plate driven assembly are interconnected by the chain, with the chain plate drive assembly located on the right side of the chain and the chain plate driven assembly located on the left side of the chain; the workpiece bearing plate is fixedly installed on the chain; a tensioning mechanism is provided inside the tensioning cavity; the tensioning mechanism is fixedly connected to the bottom end of the connecting rod; the chain plate tensioning assembly comprises a toothed disc, a slider, and a slide rail; the slide rail and the tensioning cavity are both fixed on the shot blasting machine; the slider is slidably connected to the inner wall of the slide rail; the toothed disc bearing is installed on one side of the slider and sleeved on the inner side of the chain, meshing with the chain; the upper end of the connecting rod is connected to the bottom bearing of the slider, and the lower end is fixedly connected to the tensioning mechanism.

[0005] The present invention further describes that the tensioning mechanism includes a motor, an output shaft, a gear, a sleeve, and a screw. The motor is fixedly installed on the inner wall of the tensioning cavity. The gear is fixedly connected to the output end of the motor through the output shaft. A sliding hole is provided above the tensioning cavity, and a connecting rod is slidably connected in the sliding hole. The sleeve is connected to the bottom end of the connecting rod through the screw. Six tooth blocks are provided on the left side of the sleeve, and the six tooth blocks mesh with the gear.

[0006] The present invention further illustrates that the inner wall of the tensioning cavity is slidably connected with a top plate and a limiting plate. The top plate is fixed to the bottom end of the sleeve. A threaded hole is opened at the bottom of the tensioning cavity, and a threaded rod is threadedly connected to the threaded hole. The threaded rod is connected to the bottom bearing of the limiting plate. The limiting plate is located below the top plate, and a spring is provided between the two.

[0007] The present invention further illustrates that through holes are provided in the middle of the threaded rod, the middle of the top plate, and the middle of the limiting plate; a threaded hole is provided in the middle of the sleeve; the screw is threadedly connected to the threaded hole of the sleeve, and the bottom end of the threaded rod extends out.

[0008] The present invention further illustrates that the outer side of the screw and the outer side of the threaded rod are both provided with scales.

[0009] The present invention further illustrates that the torque of the motor is greater than the maximum deformation force of the spring.

[0010] The present invention further illustrates that a baffle is fixed on the right side of the sleeve, and five guide rails are evenly arranged on the outer side of the sleeve. The five upper toothed blocks are slidably connected to the five guide rails respectively, and the five upper toothed blocks are fixedly connected to each other to form a whole. The middle of the five upper toothed blocks is spring-connected to the middle of the baffle.

[0011] The present invention further illustrates that the lower toothed block is fixed to the outer side of the sleeve; a push block is fixed to one side of the lower end of the connecting rod.

[0012] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention drives the connecting rod to move through the tensioning mechanism, the connecting rod drives the slider to slide along the inner wall of the slide rail, thereby driving the toothed disc to move, and the toothed disc drives one side of the chain to be stretched outward, thereby tensioning the chain to prevent the chain from loosening and disengaging from the driven component of the chain plate after long-term rotation. By increasing the tension force, a full connection is ensured, thereby improving the workpiece flipping efficiency, enabling the workpiece to flip more smoothly and improving work efficiency.

[0013] Furthermore, during the operation of the shot blasting machine, personnel can stay away from the machine and control the motor to perform tensioning, ensuring operational safety. After the shot blasting machine stops, the operator can perform tensioning by rotating the screw. It is a manual-automatic system with high applicability and relatively low energy consumption of the motor, thereby reducing costs. During manual adjustment, when the screw is rotated downwards and moved to its limit position, the tension force on the chain is extremely high. By driving the motor to continue rotating, the sleeve continuously jumps up and down, causing the gear plate to gradually loosen the chain and then reset the tension, ensuring that the chain is properly relaxed and avoiding continuous high tension that could cause breakage. This fully protects the chain and maximizes its utilization. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a plan view of the chain plate mechanism of the present invention;

[0017] Figure 3 This is a plan view of the toothed disc and slider of the present invention;

[0018] Figure 4 This is a schematic diagram of the internal structure of the tensioning cavity of the present invention;

[0019] Figure 5 This is an exploded view of the tensioning cavity and its internal structure of the present invention;

[0020] Figure 6 This is a schematic diagram of the internal structure of the sleeve of the present invention;

[0021] Figure 7 This is a schematic diagram of the automatic application of tension force according to the present invention;

[0022] Figure 8 This is a schematic diagram of Embodiment 1 of the present invention;

[0023] Figure 9 This is a schematic diagram of Embodiment 2 of the present invention;

[0024] Figure 10 This is a schematic diagram of the first part of Embodiment 4 of the present invention;

[0025] Figure 11 This is a schematic diagram of the second part of Embodiment 4 of the present invention;

[0026] Figure 12 This is a schematic diagram of the third part of Embodiment 4 of the present invention;

[0027] In the diagram: 1. Chain plate drive assembly; 2. Chain plate driven assembly; 31. Gear plate; 32. Slider; 33. Slide rail; 4. Chain; 5. Workpiece bearing plate; 6. Connecting rod; 61. Push block; 7. Tensioning cavity; 71. Motor; 72. Spring; 73. Gear plate; 74. Sleeve; 741. Gear block; 742. Baffle; 743. Guide rail; 75. Screw; 76. Top plate; 77. Limiting plate; 78. Threaded rod. Detailed Implementation

[0028] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-12 The present invention provides a technical solution: a continuous flipping chain plate mechanism for shot blasting machine, including a flipping device, the flipping device including a chain plate drive assembly 1, a chain plate driven assembly 2, a chain plate tensioning assembly, a chain 4, a workpiece bearing plate 5, a connecting rod 6 and a tensioning cavity 7.

[0030] The chain plate drive assembly 1 and the chain plate driven assembly 2 are connected to each other through the chain 4, and the chain plate drive assembly 1 is located on the right side of the chain 4, the chain plate driven assembly 2 is located on the left side of the chain 4, the workpiece bearing plate 5 is fixedly installed on the chain 4, and the tensioning cavity 7 is provided with a tensioning mechanism, which is fixedly connected to the bottom end of the connecting rod 6.

[0031] The chain plate tensioning assembly includes a toothed disc 31, a slider 32, and a slide rail 33. The slide rail 33 and the tensioning cavity 7 are both fixed on the shot blasting machine. The slider 32 is slidably connected to the inner wall of the slide rail 33. The toothed disc 31 is mounted on one side of the slider 32 and sleeved on the inner side of the chain 4, and meshes with the chain 4. The upper end of the connecting rod 6 is connected to the bottom bearing of the slider 32, and the lower end is fixedly connected to the tensioning mechanism.

[0032] When the shot blasting machine is running, the workpiece is placed on the workpiece support plate 5 and the front of the workpiece is polished. Then the chain plate drive assembly 1 runs, and the chain plate driven assembly 2 rotates through the chain 4, thereby moving the workpiece obliquely upward through the workpiece support plate 5, reaching the high point and rolling down, forming a flip. The chain 4 is made by casting and heat treatment, with a long service life and can work in the shot blasting area for many years without damage. The chain 4 carries the workpiece support plate 5 to rotate obliquely upward, and the workpiece inside reaches the high point and rolls down, thereby realizing the flip, which can effectively reduce the collision when flipping the workpiece. The chain 4 and the sprocket use a non-standard meshing line, which can effectively avoid the steel shot getting stuck during transmission. The tensioning assembly of the chain plate realizes the tension of the special chain 4, thereby realizing the tension of the workpiece support plate 5.

[0033] The tensioning mechanism drives the connecting rod 6 to move, and the connecting rod 6 drives the slider 32 to slide along the inner wall of the slide rail 33, thereby driving the gear plate 31 to move. The gear plate 31 drives one side of the chain 4 to spread outward, thereby tensioning the chain 4 to prevent the chain 4 from loosening and disengaging from the driven component 2 of the chain plate due to long-term rotation. By increasing the tension, a full connection is ensured, thereby improving the workpiece flipping efficiency, enabling the workpiece to flip more smoothly and improving work efficiency.

[0034] The tensioning mechanism includes a motor 71, an output shaft, a gear 73, a sleeve 74, and a screw 75. The motor 71 is fixedly installed on the inner wall of the tensioning cavity 7. The gear 73 is fixedly connected to the output end of the motor 71 through the output shaft. A sliding hole is provided above the tensioning cavity 7, and the connecting rod 6 is slidably connected in the sliding hole. The sleeve 74 is connected to the bottom end of the connecting rod 6 through the screw 75. Six toothed blocks 741 are provided on the left side of the sleeve 74, and the six toothed blocks 741 mesh with the gear 73.

[0035] When tensioning chain 4, motor 71 runs, driving gear 73 to rotate via output shaft. Gear 73 meshes with six toothed blocks 741, causing sleeve 74 to move downward. Sleeve 74, through screw 75, drives connecting rod 6 to move downward, thereby tensioning chain 4. Tensioning is achieved automatically, and the tension force can be controlled by controlling the rotation angle of motor 71. The tension force control is highly precise, which can prevent chain 4 from falling off and prevent excessive tension from causing excessive meshing strength between toothed disc 31, chain plate driven assembly 2, and chain 4, thus preventing the smoothness of transmission and preventing chain 4 from breaking due to excessive force.

[0036] The inner wall of the tensioning cavity 7 is slidably connected with a top plate 76 and a limiting plate 77. The top plate 76 is fixed to the bottom end of the sleeve 74. A threaded hole is opened at the bottom of the tensioning cavity 7, and a threaded rod 78 is threadedly connected in the threaded hole. The threaded rod 78 is connected to the bottom bearing of the limiting plate 77. The limiting plate 77 is located below the top plate 76, and a spring 72 is provided between the two.

[0037] When the motor 71 is running and tensioning the chain 4, due to the large instantaneous kinetic energy of the motor 71, to avoid sudden application of tension force that cannot be quickly released, the top plate 76 slides downward along the inner wall of the tensioning cavity 7 as the sleeve 74 moves downward. The limiting plate 77 is held in place by the threaded rod 78. At this time, the spring spring 72 deforms under force, and the reaction force generated by the deformation applies a reaction force to the bottom of the top plate 76, thereby slowing down the speed of the toothed disc 31 moving downward when the motor 71 is running, thus controlling the speed of the tensioning process and protecting the chain 4 from breakage. Figure 7 As shown;

[0038] Example 1:

[0039] like Figure 8 As shown, after a period of use, chain 4 suffers severe wear and tear. When applying tension, the tensioning speed needs to be reduced. The operator rotates the threaded rod 78, causing it to move upwards through the threaded hole while rotating, thereby lifting the limiting plate 77 upwards and sliding it upwards along the inner wall of the tensioning cavity 7. Before applying tension, the spring spring 72 is compressed to increase its deformation. This further enhances the reaction force when the motor 71 is running and the top plate 76 moves downwards, providing further protection for chain 4 during tensioning and effectively preventing chain 4 breakage. This extends the service life of chain 4.

[0040] Through holes are provided in the middle of the threaded rod 78, the middle of the top plate 76, and the middle of the limiting plate 77. A threaded hole is provided in the middle of the sleeve 74. The screw 75 is threaded into the threaded hole of the sleeve 74, and its bottom end extends out of the threaded rod 78.

[0041] Example 2:

[0042] like Figure 9 As shown, after the chain 4 is initially tensioned by the motor 71, if the tension is still insufficient, the operator can rotate the screw 75 to make it rotate and move downward through the threaded hole in the middle of the sleeve 74, thereby causing the connecting rod 6 to move downward, and thus the chain 4 is further tensioned through the toothed disc 31. Through manual operation, the control accuracy of the tension is higher and the adjustment is more convenient.

[0043] Example 3:

[0044] During shot blasting machine operation, personnel should stay away from the machine. Tensioning is performed by controlling motor 71 to ensure operational safety. After the shot blasting machine stops, the operator can rotate the screw 75.

[0045] It can perform tensioning work in both manual and automatic modes, making it highly applicable. It also reduces the energy consumption of motor 71, thereby lowering costs.

[0046] Scales are provided on the outer side of both the screw 75 and the threaded rod 78;

[0047] In Embodiment 1, after rotating the threaded rod 78, the top plate 76 is subjected to force. However, due to the force of the motor 71, the top plate 76 will move upward slightly, which in turn causes the sleeve 74 to move upward slightly. The sleeve 74 will drive the connecting rod 6 to move upward slightly through the screw 75, which affects the tension. At this time, the operator can move the threaded rod 78 upward and observe the change of the scale on its outer side. Then, the operator can rotate the screw 75 to make it move in the opposite direction of the threaded rod 78. By observing the scale on its outer side, the operator can keep the moving distance consistent and accurately control the tension of the chain 4.

[0048] The torque of motor 71 is greater than the maximum deformation force of spring 72;

[0049] By setting the torque of the motor 71 to be greater than the maximum deformation force of the spring 72, the insufficient force of the motor 71 can prevent the sleeve 74 from moving downward smoothly, thus avoiding affecting the tensioning operation.

[0050] A baffle 742 is fixed on the right side of the sleeve 74, and five guide rails 743 are evenly arranged on the outer side of the sleeve 74. The five upper toothed blocks 741 are slidably connected to the five guide rails 743 respectively, and the five upper toothed blocks 741 are fixedly connected to each other to form a whole.

[0051] The middle of the five upper toothed blocks 741 is connected to the middle of the baffle 742 by a spring.

[0052] The lower toothed block 741 is fixed to the outer side of the sleeve 74;

[0053] A push block 61 is fixed to one side of the lower end of the connecting rod 6;

[0054] Example 4:

[0055] like Figure 10 , Figure 11 as well as Figure 12As shown, during manual adjustment, when the screw 75 rotates downwards and moves to its limit position, the bottom end of the connecting rod 6 contacts the upper end of the sleeve 74. At the same time, the push block 61 on one side of the connecting rod 6 contacts the uppermost toothed block 741, pushing the five toothed blocks 741 to slide synchronously through the guide rail 743. The spring deforms under force, and the five toothed blocks 741 rotate around the center of the sleeve 74. At this time, the tension force on the chain 4 is extremely large, and the gear 73 meshes with the lowermost toothed block 741. The drive motor 71 continues to rotate, causing the gear 73 to rotate. The five upper toothed blocks 741 cannot mesh with the gear. 73 meshes, with the lowest tooth block 741 meshing with the gear 73. When the meshing reaches a certain level, the gear 73 slides past the lowest tooth block 741, causing the lowest tooth block 741 to lose its force and move upward rapidly. It is then blocked by the other teeth of the gear 73, thus re-meshing and continuing to drive the lowest tooth block 741 downward, causing the sleeve 74 to jump up and down continuously. This causes the gear plate 31 to loosen the chain 4 slightly and then re-tighten it, ensuring that the chain 4 is properly relaxed and avoiding continuous high tension that could cause it to break. This fully protects the chain 4 and maximizes its utilization.

[0056] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and 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 invention.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous turnover chain flight mechanism for a shot blasting machine, comprising a turnover device, characterized in that: The turnover device comprises a chain plate driving assembly (1), a chain plate driven assembly (2), a chain plate tensioning assembly, a chain (4), a workpiece bearing plate (5), a connecting rod (6) and a tensioning cavity (7); The chain plate driving assembly (1) and the chain plate driven assembly (2) are connected with each other through the chain (4), the chain plate driving assembly (1) is located at the right side of the chain (4), the chain plate driven assembly (2) is located at the left side of the chain (4), the workpiece bearing plate (5) is fixedly installed on the chain (4), and the tensioning cavity (7) is internally provided with a tensioning mechanism, and the tensioning mechanism is fixedly connected with the bottom end of the connecting rod (6). The chain plate tensioning assembly comprises a toothed disc (31), a sliding block (32) and a sliding rail (33), the sliding rail (33) and the tensioning cavity (7) are both fixed on the shot blasting machine, the sliding block (32) is slidingly connected with the inner wall of the sliding rail (33), the toothed disc (31) is bearingly installed on one side of the sliding block (32) and is sleeved on the inner side of the chain (4) and is in meshing connection with the chain (4), the upper end of the connecting rod (6) is in bearing connection with the bottom of the sliding block (32), and the lower end is fixedly connected with the tensioning mechanism. The tensioning mechanism comprises a motor (71), an output shaft, a gear (73), a sleeve (74) and a screw rod (75), the motor (71) is fixedly installed on the inner wall of the tensioning cavity (7), the gear (73) is fixedly connected with the output end of the motor (71) through the output shaft, the upper portion of the tensioning cavity (7) is provided with a sliding hole, the connecting rod (6) is slidingly connected in the sliding hole, the sleeve (74) is connected with the bottom end of the connecting rod (6) through the screw rod (75), the left side of the sleeve (74) is provided with six tooth blocks (741), and the six tooth blocks (741) are in meshing connection with the gear (73). The inner wall of the tensioning cavity (7) is slidingly connected with a top plate (76) and a limiting plate (77), the top plate (76) is fixedly connected with the bottom end of the sleeve (74), the bottom portion of the tensioning cavity (7) is provided with a threaded hole, a threaded rod (78) is threadedly connected in the threaded hole, the bottom portion of the limiting plate (77) is in bearing connection with the threaded rod (78), the limiting plate (77) is located below the top plate (76), and a spring (72) is arranged between the top plate (76) and the limiting plate (77). The right side of the sleeve (74) is fixedly provided with a baffle (742), the outer side of the sleeve (74) is uniformly provided with five guide rails (743), the upper five tooth blocks (741) are slidingly connected with the five guide rails (743) respectively, and the upper five tooth blocks (741) are fixedly connected with each other to form an integral whole. The middle portions of the upper five tooth blocks (741) and the middle portion of the baffle (742) are spring-connected.

2. The continuous turnover chain plate mechanism for a shot blasting machine according to claim 1, characterized in that: The middle portion of the threaded rod (78), the middle portion of the top plate (76) and the middle portion of the limiting plate (77) are all provided with penetrating holes, the middle portion of the sleeve (74) is provided with a threaded hole, the screw rod (75) is threadedly connected in the threaded hole of the sleeve (74), and the bottom end of the screw rod (75) extends out of the threaded rod (78).

3. The continuous turnover chain flight mechanism for a shot blasting machine according to claim 2, characterized in that: The outer side of the screw rod (75) and the outer side of the threaded rod (78) are both provided with scales.

4. The continuous turnover chain plate mechanism for a shot blasting machine according to claim 3, characterized in that: The torque of the motor (71) is greater than the maximum deformation force of the elastic spring (72).

5. The continuous turnover chain flight mechanism for a shot blasting machine according to claim 1, characterized in that: One of the tooth blocks (741) is fixed with the outside of the sleeve (74); The lower end of the connecting rod (6) is fixed with a push block (61).

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