Shot blasting machine for circular workpiece surface treatment

Abstract

The utility model discloses a shot blasting machine for treating the surface of a circular workpiece, which comprises a rack assembly, a shot blasting machine, a shot blasting machine and a shot blasting machine, the rack assembly comprises a rack, a frame is arranged on the upper side of the rack, and rollers are arranged on the two sides of the frame along the length direction; the workpiece rotating device is fixedly arranged in the rack assembly, and a circular workpiece can rotate under the action of the workpiece rotating device; the impeller head lifting assembly is arranged at one end of the upper side of the rack, and the impeller head lifting assembly can vertically slide; the device comprises a rack assembly, a winch, a steel grit lifting mechanism and a spiral conveying mechanism, a groove body is arranged at the bottom of the rack assembly, the spiral conveying mechanism is fixedly arranged in the groove body at the bottom of the rack assembly, and the tail end of the groove body is communicated with an inlet at the bottom of the steel grit lifting mechanism. The shot blasting machine disclosed by the utility model is simple in structure, time-saving and labor-saving, capable of meeting the shot blasting requirements of workpieces with different sizes, and relatively high in economic benefit.

Description

TECHNICAL FIELD

[0001] The utility model relates to surface treatment equipment technical field especially relates to a kind of round workpiece surface treatment is used to throw shot machine. BACKGROUND

[0002] The existing rotating shaft type or hanging type shot blasting machine generally includes steel sand stirring, lifting, shot blasting and workpiece rotation, dust collection and other components, which throws steel sand at high speed to complete rust removal on the surface of steel structure or change the roughness of workpiece surface.

[0003] However, since the position of the shot blasting machine for circular steel structure is usually fixed, when the size of the workpiece is small, the distance between the shot blasting machine and the workpiece is long, and the shot blasting efficiency is low. Moreover, the circular workpiece is usually installed in a horizontal rotating shaft or placed in a shot blasting box through a vertical hanging method. The installation method of the horizontal rotating shaft of the workpiece requires matching with fixed tooling according to different installation sizes of the workpiece, and the hanging method requires different lifting devices. Therefore, the above two commonly used methods have the problems of complicated installation, time and labor consuming, and low shot blasting efficiency.

[0004] Therefore, the skilled in the art urgently needs to study a shot blasting machine for circular workpiece surface treatment, which is easy to install and has high shot blasting efficiency. SUMMARY

[0005] The utility model aims at the problems of complicated installation, time and labor consuming, and low shot blasting efficiency of the existing shot blasting machine for workpiece surface treatment in the background art, and provides a shot blasting machine for circular workpiece surface treatment.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A shot blasting machine for circular workpiece surface treatment, at least comprising: a rack assembly,

[0008] The rack assembly comprises a rack, and the upper side of the rack is provided with a frame. Rollers are arranged on both sides of the frame along the length direction.

[0009] A workpiece rotating device is fixedly arranged in the rack assembly, and the circular workpiece can rotate under the action of the workpiece rotating device.

[0010] A shot blasting machine lifting assembly is arranged at one end of the upper side of the rack, and the shot blasting machine lifting assembly can vertically slide.

[0011] A winch is arranged at the other end of the upper side of the rack, and the shot blasting machine lifting assembly can move horizontally along the rollers under the traction of the steel wire rope of the winch.

[0012] A steel grit lifting mechanism is arranged outside the shot blasting machine lifting assembly for transporting steel grit.

[0013] A spiral conveying mechanism is fixedly arranged in the groove at the bottom of the rack assembly, and the end of the groove is in communication with the inlet at the bottom of the steel grit lifting mechanism.

[0014] When the shot blasting machine lifting assembly moves to the inner frame position of the rack assembly, the shot blasting machine lifting assembly is lowered to a predetermined position, the workpiece lifting mechanism lifts the workpiece to the predetermined position, the workpiece rotating device rotates the circular workpiece, the steel grit lifting mechanism lifts the steel grit to the predetermined position, and the steel grit is sprayed to the circular workpiece.

[0015] In one embodiment, the lower part of the rack assembly is provided with a tapered box with a large upper part and a small lower part, the groove is arranged at the bottom of the box, and the steel grit can be conveyed to the inlet of the steel grit lifting mechanism through the groove.

[0016] In one embodiment, the sidewall of the box of the rack assembly is provided with an air suction port in communication with the dust collection device.

[0017] In one embodiment, the inner wall of the box is provided with wear-resistant material.

[0018] In one embodiment, the workpiece rotating device includes a speed reducer, a chain wheel, a chain, a bearing seat, a driving drum, and a driven drum. The driving drum is driven by the speed reducer. The transmission mode includes a chain wheel and a chain or other equivalent transmission structure. The circular workpiece arranged between the driving drum and the driven drum can rotate with the driving drum.

[0019] In one embodiment, the shot blasting machine lifting assembly includes a shot blasting machine, a worm gear screw lifting machine, an inner frame, an outer frame, and a lifting machine support. The worm gear screw lifting machine is fixedly arranged on the lifting machine support, and the lifting machine support is fixedly connected with the outer frame. One end of the up-down telescopic screw rod is connected with the inner frame. The inner frame and the shot blasting machine can move up and down with the telescopic screw rod. The shot blasting machine is arranged on the inner frame. The inner frame and the outer frame are a clearance fit sliding pair. The shot blasting machine lifting assembly is connected with the outer frame of the top cover by a counterweight through a steel wire rope, for balancing the gravity of the lifting assembly.

[0020] In one embodiment, the spiral conveying mechanism includes a spiral blade, a bearing seat, a chain wheel, and a screw rod. The spiral conveying mechanism is fixedly arranged in the groove, the end of the groove is connected with the bottom inlet of the steel grit lifting mechanism, and the screw rod penetrates the spiral blade and the chain wheel. The spiral blade and the chain wheel are fixedly connected with the screw rod. The chain on the steel grit lifting mechanism and the chain wheel or other equivalent transmission structure such as a belt can rotate the spiral blade under the drive of the motor.

[0021] In one embodiment, the steel sand lifting mechanism comprises a cabinet body, a first chain, a sand hopper, a motor, a second chain, a chain wheel and a sand distribution port, the sand hopper is fixedly arranged on the first chain, the second chain can drive the first chain and the sand hopper under the driving of a driving mechanism; the sand distribution port is located at the top of the steel sand lifting mechanism, a guide plate is arranged in the sand distribution port, and the bottom of the steel sand lifting mechanism is connected with the screw conveying mechanism.

[0022] In one embodiment, the lower part of the sand distribution port is connected with a Y-shaped sand distribution pipe, and the Y-shaped sand distribution pipe is connected with the inlet of the shot blasting machine.

[0023] In one embodiment, the workpiece lifting mechanism is fixedly arranged on the ground, and comprises a lifting frame and an electric hoist, the electric hoist can move along the cross beam on the lifting frame, and a lifting hook for lifting the workpiece is arranged on the electric hoist.

[0024] Compared with the prior art, the above technical scheme of the utility model has the following beneficial technical effects:

[0025] The above structure design of the utility model has the advantages that the shot blasting machine lifting assembly can move horizontally under the traction of the steel wire rope of the electric hoist, so that the upper space of the rack assembly is opened, and the workpiece is conveniently lifted.

[0026] The bottom of the box body is conical, and can collect the steel sand sprayed by the shot blasting machine. Wear-resistant steel plates or rubber skins or other wear-resistant materials are arranged on the inner walls of the box body structure, so that the inner walls are protected from being damaged by the steel shots and the service life is prolonged.

[0027] The position of the driven roller can be adjusted, so that the horizontal position of the driven roller can be adjusted by a certain distance, the distance between the master roller and the driven roller can be changed, and the placement requirements of circular workpieces of different diameters can be met.

[0028] The screw rod of the worm gear screw rod elevator can drive the shot blasting machine fixing frame and the shot blasting machine to move up and down, the height of the shot blasting machine is conveniently adjusted, the shot distance under the working condition of small workpieces can be optimized, and the shot blasting requirements of workpieces of different sizes are better met.

[0029] The workpiece lifting mechanism is arranged, the hoisting of workpieces of different sizes is conveniently realized, the installation is simple, time and labor are saved, and the economic benefit is high. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the exploded structural schematic view of the shot blasting machine of one embodiment of the utility model.

[0031] Figure 2 is the structural schematic view of the rack assembly of one embodiment of the utility model.

[0032] Figure 3This is a schematic diagram of the workpiece rotation device according to an embodiment of the present invention.

[0033] Figure 4 This is a schematic diagram of the lifting assembly of a shot blasting machine according to an embodiment of the present invention.

[0034] Figure 5 This is a schematic diagram of the spiral conveying mechanism according to an embodiment of the present invention.

[0035] Figure 6 This is a schematic diagram of a steel sand lifting mechanism according to an embodiment of the present invention.

[0036] Figure 7 This is a schematic diagram of the workpiece lifting mechanism according to an embodiment of the present invention. Detailed Implementation

[0037] In the description of this utility model, it should be understood that 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described herein are merely exemplary. The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0039] like Figures 1 to 7 As shown, this utility model proposes a shot blasting machine for surface treatment of circular workpieces, including a frame assembly 1, a spiral conveying mechanism 4, a steel shot lifting mechanism 5, a steel shot conveying pipe 11, a shot blasting lifting assembly 3, a workpiece rotating device 2, an electric winch 8, a dust collection device 6, and a workpiece lifting machine 7, etc.

[0040] like Figure 1 , Figure 2As shown, the rack assembly 1 is preferably a steel structure rectangular box structure, the top of which is not closed, and two rows of rollers 1-3 are arranged on the top frame along the length direction of the two side edges, and an electric hoist 8 is installed on the tail beam of the right side of the top frame. The shot blasting machine lifting assembly 3 can be horizontally moved under the traction of the steel wire rope of the electric hoist 8, so as to open the upper space of the rack assembly, and facilitate the hoisting of the workpiece; the bottom of the box is conical, which can collect the steel sand sprayed by the shot blasting machine, and the screw conveying mechanism 4 is horizontally arranged in the conical bottom groove, and the tail part of the screw conveying mechanism is driven to rotate the screw rod with spiral blades on the conveying mechanism. The rotating spiral blades can axially convey the steel sand collected in the groove of the box body along the channel formed by the groove, until the inlet of the steel sand lifting mechanism 5 arranged vertically outside the box body, which communicates with the end of the groove of the screw conveying mechanism. The conical side wall of the bottom of the box body of the rack assembly is provided with an air inlet, which communicates with the dust collection device 6 through a pipeline, and the inner wall of the box structure is provided with a wear-resistant steel plate or a rubber skin, so as to protect the inner wall from being damaged by the steel shot and prolong the service life.

[0041] As shown in Figure 3 The workpiece rotating device 2 mainly comprises a speed reducer motor 2-1, a chain wheel 2-2, a chain 2-3, a bearing seat 2-4, a driving roller 2-5 and a driven roller 2-6. The device is directly installed on the rack assembly 1 through fasteners, and the transmission mode of the driving roller 2-5 is not limited. In the present application, the workpiece rotating device preferably adopts a speed reducer motor, a chain wheel and a chain transmission, but other equivalent transmission modes can also be used instead.

[0042] Specifically, the speed reducer motor 2-1 drives the driving roller to rotate through the chain wheel 2-2 and the chain 2-3. The circular workpiece is placed between the two rollers, and the outer circle of the workpiece is tangent to the outer circles of the two rollers. When the driving roller rotates, the circular workpiece rotates under the friction of the outer circle of the driving roller and the support of the two rollers, and the driven roller rotates with the workpiece. The rollers are wrapped with soft wear-resistant materials to protect the rollers from being damaged by the steel sand.

[0043] As shown in Figure 4 The shot blasting machine lifting assembly 3 has a structure of vertically sliding inner and outer frames, which mainly comprises two shot blasting machines 3-1, a worm gear screw lifting machine 3-2, an inner frame (i.e. a shot blasting machine fixing frame 3-3), an outer frame (i.e. a top cover outer frame 3-4) and a lifting machine support 3-5. The worm gear screw lifting machine 3-2 is a standard transmission part composed of a motor, a worm gear and a screw rod 3-2-1, which is installed on the lifting machine support 3-5.

[0044] The screw rod is retractable up and down, and the other end of the screw rod is connected with the shot blasting machine fixed frame 3-3, and the shot blasting machine 3-1 is installed on the shot blasting machine fixed frame 3-3.

[0045] The shot blasting machine fixed frame 3-3 and the top cover outer frame 3-4 are a clearance fit sliding pair, the lifter support 3-5 is fixedly connected with the top cover outer frame 3-4, and the screw rod 3-2-1 on the worm screw lifter 3-2 can drive the shot blasting machine fixed frame 3-3 and the shot blasting machine 3-1 to move up and down, so as to adjust the height of the shot blasting machine, and the shot distance under the working condition of small workpieces can be optimized.

[0046] The initial position of the shot blasting machine lifting assembly 3 is located at the top center of the rack assembly, and the shot blasting machine lifting assembly 3 is located on the two rows of rollers 1-3 at the edges of the top frame. The top cover outer frame 3-4 is pulled by the electric winch 8 and the steel wire rope 8, so that the whole shot blasting machine lifting assembly 3 moves horizontally along the top rollers 1-3, and a limit switch is arranged at the end to prevent overtravel. After the shot blasting machine 3-1 and the shot blasting machine fixed frame 3-3 are lifted by the worm screw lifter, the whole assembly can be moved horizontally to the outside of the rack under the traction of the steel wire rope 10 by the electric winch 8, so as to leave the top space for hoisting the workpiece. Secondly, when the electric winch 8 is released, the shot blasting machine lifting assembly 3 slowly returns to the initial position on the rack assembly under the gravity of the counterweight 9, which is determined by the height of the bottom of the counterweight and the horizontal stop block of the shot blasting machine lifting assembly 3. The horizontal movement and vertical lifting of the shot blasting machine lifting assembly are controlled by the electric control system, so as to ensure that the winch and the worm screw lifter do not conflict in sequence.

[0047] As shown in Figure 5 , Figure 6 , the screw conveying mechanism 4 is composed of a spiral blade 4-1, a bearing seat 4-2, a chain wheel 4-3, a screw rod 4-4 and the like. The function of the mechanism is to horizontally convey steel sand. The mechanism is installed in the groove at the bottom of the rack by fasteners, the end of the groove is connected with the bottom inlet of the steel sand lifting mechanism 5, and the screw rod penetrates through the spiral blade segment and the chain wheel segment, and the spiral blade 4-1 and the chain wheel 4-3 are fixedly connected on the screw rod 4-4. The chain 5-5 on the steel sand lifting mechanism 5 drives the rotation of the spiral blade 4-1 under the drive of the motor 5-4, so as to realize the horizontal conveying of the steel sand to the bottom inlet of the steel sand lifting mechanism 5.

[0048] As shown in Figure 6As shown, the steel sand lifting mechanism 5, the mechanism includes cabinet 5-1, the first chain (5-2), sand bucket 5-3, motor 5-4, the second chain (5-5), chain wheel 5-6, sand mouth 5-7 etc.. Wherein the sand bucket 5-3 is fixedly installed on the first chain (5-2) strip, with chain and move. The function of the mechanism is to transport steel sand from bottom to top. First, through the motor 5-4 drive chain wheel 5-6 second chain (5-5), so as to drive the first chain (5-2) and sand bucket 5-3, sand bucket is driven by chain, from the bottom of the steel sand to the sand mouth 5-7 is lifted. Sand mouth 5-7 is located at the top of the lifting mechanism, the sand mouth 5-7 is provided with a guide plate inside, to ensure that the steel sand is evenly into the inlet of the shot blasting machine 3-1. The bottom of the mechanism is connected with the screw conveying mechanism 4. The top of the sand mouth is connected with the Y type sand distribution pipe (pipe 11) below, which uniformly distributes the steel sand to the inlet of the shot blasting machine 3-1. And the top has a dust suction port connected with the dust collection device through the pipeline, which can suck away the dust in the mechanism.

[0049] As Figure 7 As shown, the workpiece lifting machine 7, the mechanism includes the lifting frame 7-1 and electric hoist 7-2, the function of the mechanism is to carry and lift the material (workpiece), up and down material. Electric hoist 7-2 moves along the upper crossbeam of lifting frame 7-1, the hook on the electric hoist is vertically lifted through the steel wire rope, and the workpiece is lifted between the two rollers. The workpiece lifting machine 7 is separated from the shot blasting machine main body structure, and is directly fixed on the ground.

[0050] The dust collection device 6 is located beside the rack assembly 1, and is fixed on the ground and connected with the rack assembly 1 and the steel sand lifting mechanism 5 through the pipeline. The function of the device is to suck the dust generated in the shot blasting process through the fan, to ensure the clean working environment.

[0051] The specific application of the utility model is as follows:

[0052] Firstly, the shot blasting machine lifting assembly 3 is moved to the position of the inner frame of the rack under the action of the gravity of the counterweight 9, the worm gear screw lifter 3-2 is started, the shot blasting machine fixing frame 3-3 provided with the shot blasting machine 3-1 is lowered to the appropriate position, the reduction motor 2-1 is started, the chain wheel 2-2 and the chain 14 drive the driving roller 1-2, and the driving roller 1-2 and the driven roller 1-3 jointly drive the workpiece to rotate. The fan is started for dust removal, and then the shot blasting machine is started.

[0053] Secondly, the motor on the steel sand lifting assembly 5 is started, the screw conveying mechanism 4 is used to convey the steel sand in the machine body to the lower part of the steel sand lifting assembly, then the steel sand is lifted to the top part through the steel sand lifting assembly, and after separation, the steel sand enters the two inlets of the shot blasting machine through pipe A-12 and pipe B-13 respectively, and then the steel sand is shot out by the shot blasting machine 3-1, so that the workpiece is shot blasted.

[0054] Thirdly, after the completion of the shot blasting, the motor on the steel sand lifting assembly 5 is first stopped, the top steel sand supply to the shot blasting machine is stopped, then the shot blasting machine 3-1 is closed, the reduction motor 2-1 driving the roller is closed, and finally the dust removal fan is closed.

[0055] Then, the worm screw elevator 3-2 is started to lift the shot blasting machine to the highest position, the electric hoist 8 is started to pull the shot blasting machine lifting assembly 3 until the shot blasting machine lifting assembly 3 does not cover the inner frame of the machine body, and finally the workpiece is taken out by the workpiece lifting machine 7.

[0056] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this, various changes can be made within the knowledge range possessed by the technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. A shot blasting machine for surface treatment of circular workpieces, characterized in that, At least comprising: A rack assembly, The rack assembly comprises a rack, the upper side of the rack is provided with a frame, the frame is provided with a roller on both sides along the length direction; Workpiece rotating device, the workpiece rotating device is fixedly arranged in the rack assembly, and the circular workpiece can rotate under the action of the workpiece rotating device; The thrower lifting assembly is vertically slidably arranged at one end of the upper side of the rack; Winch, the other end of the upper side of the rack is provided with a winch, and the thrower lifting assembly can move horizontally along the roller under the traction of the steel wire rope of the winch; Steel sand lifting mechanism, the steel sand lifting mechanism is arranged outside the thrower lifting assembly, and is used for transporting steel sand; Screw conveying mechanism, the bottom of the rack assembly is provided with a groove, the screw conveying mechanism is fixedly arranged in the groove at the bottom of the rack assembly, and the end of the groove is communicated with the inlet at the bottom of the steel sand lifting mechanism; Wherein, when the thrower lifting assembly moves to the frame position in the rack assembly, the thrower lifting assembly is lowered to the predetermined position, the workpiece lifting mechanism lifts the workpiece to the predetermined position, the workpiece rotating device drives the circular workpiece to rotate, the steel sand lifting mechanism lifts the steel sand to the predetermined position, and the steel sand is sprayed to the circular workpiece.

2. The circular workpiece surface treatment blast machine according to claim 1, wherein The lower part of the rack assembly is provided with a tapered box with large upper side and small lower side, the groove is arranged at the bottom of the box, and the steel sand can be conveyed to the inlet of the steel sand lifting mechanism through the groove.

3. The circular workpiece surface treatment blast machine according to claim 2, wherein The side wall of the box body is provided with an air inlet, and the air inlet is communicated with the dust collection device.

4. The circular workpiece surface treatment blast machine according to claim 2, wherein The inner wall of the box is provided with wear-resistant material.

5. The circular workpiece surface treatment blast machine according to claim 1, wherein The workpiece rotating device comprises a reduction motor, a chain wheel, a chain, a bearing seat, a driving drum and a driven drum, the driving drum can rotate under the drive of the transmission structure, and the circular workpiece arranged between the driving drum and the driven drum can rotate with the driving drum.

6. The circular workpiece surface treatment blast machine according to claim 1, wherein The thrower lifting assembly comprises a thrower, a worm gear screw lifting machine, an inner frame, an outer frame and a lifting machine support, the worm gear screw lifting machine is fixedly arranged on the lifting machine support, the lifting machine support is fixedly connected with the outer frame through a steel wire rope, and the other end of the steel wire rope is provided with a counterweight; one end of the telescopic screw rod is connected with the inner frame, the inner frame and the thrower can move up and down with the telescopic screw rod; the thrower is arranged on the inner frame, and the inner frame and the outer frame are gap matched sliding pairs.

7. The circular workpiece surface treatment blast machine according to claim 1, wherein The screw conveying mechanism comprises a spiral blade, a bearing seat, a chain wheel and a screw rod, the screw conveying mechanism is fixedly arranged in the groove, the end of the groove is connected with the bottom inlet of the steel sand lifting mechanism, the screw rod penetrates through the spiral blade and the chain wheel, the spiral blade and the chain wheel are fixedly connected on the screw rod, and the transmission structure on the steel sand lifting mechanism can drive the spiral blade to rotate under the drive of the motor.

8. The circular workpiece surface treatment blast machine according to claim 1, wherein The steel sand lifting mechanism comprises a cabinet, a first chain, a sand hopper, a motor, a second chain, a chain wheel and a sand distribution port, the sand hopper is fixedly arranged on the first chain, the second chain can drive the first chain and the sand hopper under the drive of the motor; the sand distribution port is located at the top of the steel sand lifting mechanism, the sand distribution port is internally provided with a flow guide plate, and the bottom of the steel sand lifting mechanism is connected with the screw conveying mechanism.

9. The circular workpiece surface treatment blast machine according to claim 8, wherein The lower part of the sand distribution port is connected with a Y-shaped sand distribution pipe, and the Y-shaped sand distribution pipe is connected with the inlet of the shot blasting machine through a pipe.

10. The circular workpiece surface treatment blast machine according to claim 1, wherein The workpiece lifting machine is fixedly arranged on the ground, and comprises a lifting frame and an electric hoist. The electric hoist is movable along a cross beam on the lifting frame, and a lifting hook for lifting a workpiece is arranged on the electric hoist.

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