Conveyor-type sandblasting machine

Abstract

This invention relates to the technical field of sandblasting machines, and discloses a conveyor-type sandblasting machine, comprising: a machine base, a sand feeder, and two sets of air boxes; two sets of conveyor platforms running parallel through the machine base; a sandblasting head assembly and a sand-blocking assembly, disposed inside the machine base and located above the conveyor platforms; wherein, the sandblasting head assembly includes a sandblasting head that moves along the X, Y, and Z directions; the sand-blocking assembly includes a baffle that moves along the Y direction, the baffle being disposed below the sandblasting head, and the baffle having a plurality of through holes evenly distributed along its traveling direction, and the aperture of the through holes decreasing sequentially along the traveling direction; this invention, through the synergistic effect of the gradient aperture baffle and the bidirectional air boxes, forms a directional negative pressure airflow field in the sandblasting area, which on the one hand avoids direct impact on the surface of non-target areas of the workpiece, and on the other hand effectively blows away rebounded sand particles and dust through the airflow, avoiding secondary impact on non-target areas of the workpiece, thereby improving sandblasting accuracy and surface quality.

Description

Technical Field

[0001] This invention relates to the technical field of sandblasting machines, and in particular to conveyor-type sandblasting machines. Background Technology

[0002] Sandblasting is a widely used surface treatment process that uses high-speed jets of abrasive to impact the surface of a workpiece, achieving purposes such as cleaning, rust removal, roughening, or strengthening. Conveyor-type sandblasting machines are particularly suitable for large-volume, continuous production scenarios due to their high degree of automation and high processing efficiency. Existing conveyor-type sandblasting machines typically include a machine base, a conveyor system, a sandblasting device, and a dust collection system. Workpieces are fed into the sandblasting chamber by a conveyor belt or roller conveyor, undergo sandblasting treatment during movement, and are then removed from the machine base.

[0003] However, some of the sand particles generated during the sandblasting process will impact non-target areas on the workpiece surface a second time, affecting the sandblasting accuracy and surface quality, and may even lead to over-sandblasting and damage to the workpiece.

[0004] Furthermore, in order to achieve sandblasting on the back of the workpiece, it is usually necessary to flip the workpiece during or after sandblasting. Existing technologies mostly adopt the following methods:

[0005] Manual turning: Inefficient, labor-intensive, and exposes operators to dust, posing a safety hazard;

[0006] Additional configuration of dedicated flipping mechanism: requires independent workstation, robot or complex flipping device, large equipment footprint, high cost, and low integration with sandblasting process, affecting overall efficiency;

[0007] Multiple machines connected in series: Multi-face treatment can be achieved by using multiple sandblasting machines with nozzles of different angles or by setting up flipping devices at different workstations. This system is complex and the investment and maintenance costs increase dramatically. Summary of the Invention

[0008] The purpose of this invention is to provide a conveyor-type sandblasting machine, which aims to solve the problems in the prior art.

[0009] The present invention is implemented as follows: a conveyor-type sandblasting machine includes: a machine base, a sand supply machine, and two sets of air boxes;

[0010] And two sets of parallel conveyor platforms running through the machine;

[0011] The sandblasting head assembly and the sand-blocking assembly are disposed inside the machine base and located above the conveyor table;

[0012] The sandblasting head assembly includes a sandblasting head that moves along the X, Y, and Z directions;

[0013] The sand-blocking assembly includes a baffle plate that moves along the Y direction. The baffle plate is disposed below the sandblasting head. The baffle plate has a plurality of through holes evenly distributed along its traveling direction, and the diameter of the through holes decreases sequentially along the traveling direction.

[0014] A material turning assembly, disposed between the two conveyor tables, includes:

[0015] A height-adjustable steering head, which is driven by a reversing motor to rotate around its axis, the axis being perpendicular to the conveying direction of the conveyor table;

[0016] The clamping plate disposed on the steering head automatically clamps the workpiece when pressure is applied;

[0017] The electromagnetic component has a telescopic part connected to a push rod, which can move along the rotation direction of the steering gear head's shaft.

[0018] Preferably, the two sets of air boxes are respectively mounted on guide rails above the conveyor table located at the through part of the machine tool, in order to adapt to the sandblasting requirements of workpieces of different specifications;

[0019] Furthermore, each of the air boxes is equipped with a blower. The blower located on the air box at the feed end of the machine is used to blow air into the air box, while the blower located on the air box at the discharge end of the machine is used to draw air out of the air box.

[0020] Preferably, a Y-axis motor is installed on the inner side of the top of the machine tool, and the output shaft of the Y-axis motor is connected to a first lead screw, which is threadedly connected to a guide plate.

[0021] An X-axis motor is installed at the end of the guide plate, and the output shaft of the X-axis motor is connected to a second lead screw, which is threadedly connected to a mounting plate.

[0022] The mounting plate is provided with a Z-axis telescopic rod, and the sandblasting head is installed at the telescopic end of the Z-axis telescopic rod.

[0023] Preferably, a return hopper is installed below the conveyor table on the machine platform;

[0024] The discharge end of the sand feeder is connected to the inlet end of the sandblasting head via a pipeline.

[0025] The feed end of the sand feeder is connected to the bottom of the return hopper via a pipeline.

[0026] Preferably, two parallel third lead screws are installed on the inner side of the machine tool, and the two third lead screws are synchronously connected by a belt drive through the output shaft of a switching motor.

[0027] The two third lead screws are respectively threadedly connected to the first telescopic mechanism, and the two ends of the baffle are respectively fixedly connected to the telescopic ends of the two first telescopic mechanisms.

[0028] Preferably, a support plate is installed on one side of the machine base, and a second telescopic mechanism is installed on the outer bottom of the support plate. The telescopic part of the second telescopic mechanism is connected to a cross frame, and the cross frame extends horizontally into the interior of the machine base.

[0029] A support rod is vertically installed at one end of the crossbeam inside the machine base. A connecting plate is installed on the support rod, and the steering head is connected to the top of the connecting plate via a rotating shaft.

[0030] Preferably, the commutator motor is installed at one end of the crossbeam located outside the machine base, and its output shaft is connected to a rotating rod;

[0031] The connecting plate is connected to a drive gear via a bearing. A toothed groove is provided on the outer side of one side of the steering head, and the drive gear meshes with the toothed groove of the steering head. The shaft end of the drive gear is connected to the rotating rod via a belt drive.

[0032] Preferably, a dustproof sheet is provided on one side of the support plate inside the machine tool, and the dustproof sheet is in contact with the surface of the support plate.

[0033] Preferably, the two clamping plates are connected to one side of the steering gear head via a rotating shaft, and a sleeve is provided between the two clamping plates in the steering gear head;

[0034] The sleeve is equipped with a spring and a push rod that passes through and extends to the outside of the sleeve. The end of the push rod located outside the sleeve is connected to a diagonal brace between the two clamping plates via a pivot.

[0035] The beneficial effects of the conveyor-type sandblasting machine disclosed in this invention are:

[0036] 1. This invention uses the synergistic effect of gradient aperture baffles and bidirectional wind box to form a directional negative pressure airflow field in the sandblasting area. On the one hand, it can avoid direct impact on the surface of non-target areas of the workpiece, and on the other hand, it can effectively blow away rebound sand particles and dust through airflow, avoiding secondary impact on non-target areas of the workpiece, thereby improving sandblasting accuracy and surface quality.

[0037] 2. This invention integrates the flipping component into the gap between the two conveyor tables. Through the self-unlocking clamping mechanism, the workpiece is pressed to trigger adaptive clamping. After flipping, it is pushed and released by the conveyor belt on the surface of the conveyor table. There is no need for manual flipping, and it also saves the cost of independent flipping stations and multiple equipment. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of a conveyor-type sandblasting machine provided in an embodiment of the present invention;

[0039] Figure 2 This is an internal view schematic diagram of a conveyor-type sandblasting machine provided in an embodiment of the present invention;

[0040] Figure 3 This is a bottom view schematic diagram of the conveyor-type sandblasting machine provided in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the sandblasting head assembly and sand-blocking assembly of the conveyor-type sandblasting machine provided in an embodiment of the present invention;

[0042] Figure 5 The conveyor-type sandblasting machine provided in this embodiment of the invention. Figure 4 A partial upward-view diagram;

[0043] Figure 6 This is a schematic diagram of the material turning assembly of the conveyor-type sandblasting machine provided in an embodiment of the present invention;

[0044] Figure 7 This is a partial side view of the material turning assembly of the conveyor-type sandblasting machine provided in an embodiment of the present invention;

[0045] Figure 8 This is another perspective schematic diagram of the material turning component of the conveyor-type sandblasting machine provided in an embodiment of the present invention;

[0046] Figure 9 The conveyor-type sandblasting machine provided in this embodiment of the invention. Figure 7 Schematic diagram of section AA along the direction of the arrow.

[0047] Marker explanation:

[0048] 1. Machine platform; 2. Conveyor platform; 3. Air box; 4. Sand feeder;

[0049] 11. Sandblasting head assembly; 12. Sand baffle assembly;

[0050] 111. Y-axis motor; 112. First lead screw; 113. Guide plate; 114. X-axis motor; 115. Second lead screw; 116. Mounting plate; 117. Z-axis telescopic rod; 118. Sandblasting head;

[0051] 121. Switching motor; 122. Third lead screw; 123. First telescopic mechanism; 124. Baffle plate; 125. Through hole;

[0052] 21. Material turning assembly;

[0053] 211. Support plate; 212. Second telescopic mechanism; 213. Cross frame; 214. Reversing motor; 215. Dust baffle; 216. Connecting plate; 217. Support rod; 218. Electromagnetic component; 219. Steering head;

[0054] 2141, Rotary lever; 2181, Push lever;

[0055] 2191. Sleeve; 2192. Spring; 2193. Push rod; 2194. Diagonal brace; 2195. Clamping plate; 2196. Drive gear;

[0056] 41. Return hopper. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0058] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0059] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0060] In this embodiment:

[0061] Reference Figures 1-3 The diagram shows a preferred embodiment of the present invention.

[0062] The conveyor-type sandblasting machine of this embodiment includes: a machine base 1, a sand feeder 4, and two sets of air boxes 3;

[0063] And two sets of parallel conveyor platforms 2 that pass through the machine tool 1;

[0064] The sandblasting head assembly 11 and the sand-blocking assembly 12 are disposed inside the machine base 1 and located above the conveyor table 2;

[0065] The electromagnetic component 218 has a telescopic part connected to a push rod 2181, which can move along the rotation direction of the shaft of the steering head 219.

[0066] Among them, such as Figures 4-5As shown, the sandblasting head assembly 11 includes a sandblasting head 118 that moves along the X, Y, and Z directions; a Y-axis motor 111 is installed on the inner side of the top of the machine base 1, the output shaft of the Y-axis motor 111 is connected to a first lead screw 112, and the first lead screw 112 is threadedly connected to a guide plate 113; an X-axis motor 114 is installed at the end of the guide plate 113, the output shaft of the X-axis motor 114 is connected to a second lead screw 115, and the second lead screw 115 is threadedly connected to a mounting plate 116; a Z-axis telescopic rod 117 is provided on the mounting plate 116, and the sandblasting head 118 is installed at the telescopic end of the Z-axis telescopic rod 117. Under the combined action of the Y-axis motor 111, the X-axis motor 114, and the Z-axis telescopic rod 117, the sandblasting head 118 can move along the X, Y, and Z directions to achieve sandblasting operation on the workpiece in various directions;

[0067] It is worth noting that the sand-blocking assembly 12 includes a baffle 124 that moves along the Y direction. The baffle 124 is located below the sandblasting head 118. The baffle 124 has a plurality of through holes 125 evenly distributed along its traveling direction, and the diameter of the through holes 125 decreases sequentially along the traveling direction. This gradient hole diameter setting can be adjusted according to the required sandblasting range of the workpiece, avoiding damage to the workpiece caused by sand particles impacting non-target areas. Two parallel third lead screws 122 are installed on the inner side of the machine base 1. The two third lead screws 122 are synchronously connected via a belt drive through the output shaft of a switching motor 121. The two third lead screws 122 are respectively threadedly connected to a first telescopic mechanism 123. The two ends of the baffle 124 are respectively fixedly connected to... After the switching motor 121 starts, the telescopic ends of the two first telescopic machines 123 can synchronously drive the two third lead screws 122 to rotate via belt. Since the two ends of the baffle 124 are respectively connected to the two third lead screws 122 through the first telescopic machine 123, the rotation of the two third lead screws 122 can drive the two first telescopic machines 123 to move synchronously, thereby driving the baffle 124 to reciprocate along the Y direction. The through hole 125 on the baffle 124 is designed so that sand particles can pass through the through hole 125 to sandblast the workpiece during the sandblasting process. The diameter of the through hole 125 decreases sequentially along the travel direction, which can further adjust the sandblasting range, avoid sand particles directly impacting non-target areas of the workpiece, and improve sandblasting accuracy and surface quality.

[0068] Furthermore, under the action of the first telescopic mechanism 123, the baffle 124 can be raised and lowered to adjust the sandblasting range and avoid interfering with the workpiece flipping operation.

[0069] Furthermore, refer to Figures 6-9The material turning assembly 21 shown is disposed between the two conveyor tables 2 and includes: a lifting and lowering steering head 219, which is driven by a reversing motor 214 to rotate around its axis, the axis being perpendicular to the conveying direction of the conveyor table 2; and a clamping plate 2195 disposed on the steering head 219, which automatically clamps the workpiece when under pressure.

[0070] A support plate 211 is installed on one side of the machine base 1. A second telescopic mechanism 212 is installed on the outer bottom of the support plate 211. The telescopic part of the second telescopic mechanism 212 is connected to a cross frame 213, which extends horizontally into the machine base 1. A support rod 217 is vertically installed at one end of the cross frame 213 inside the machine base 1. A connecting plate 216 is installed on the support rod 217. The steering head 219 is connected to the top of the connecting plate 216 via a rotating shaft. A reversing motor 214 is installed at one end of the cross frame 213 outside the machine base 1, and its output shaft is connected to a rotating rod 2141. A drive gear 2196 is connected to the connecting plate 216 via a bearing. A toothed groove is opened on one side of the steering head 219, and the drive gear 2196 meshes with the toothed groove of the steering head 219. The shaft end of the drive gear 2196 is connected to the rotating rod 2141 via a belt drive.

[0071] The telescopic part of the second telescopic machine 212 extends and retracts to push the steering head 219 to rise and fall between the two conveyor tables 2, so as to perform a flipping operation on the workpieces conveyed above the two conveyor tables 2. When the reversing motor 214 is started, it can drive the drive gear 2196 to rotate through the rotating rod 2141 and the belt. Since the drive gear 2196 meshes with the tooth groove of the steering head 219, the rotation of the drive gear 2196 can drive the steering head 219 to rotate around its axis, thereby driving the workpiece held by the clamping plate 2195 to flip, realizing the automatic flipping operation of the workpiece. There is no need for manual flipping or additional special flipping mechanism, which improves the sandblasting efficiency and reduces the equipment footprint and cost.

[0072] It is worth noting that the two clamping plates 2195 are connected to one side of the steering head 219 via a rotating shaft. The steering head 219 is located between the two clamping plates 2195 and is provided with a sleeve 2191. The sleeve 2191 contains a spring 2192 and a push rod 2193 that penetrates and extends to the outside of the sleeve 2191. One end of the push rod 2193 located outside the sleeve 2191 is connected to a diagonal brace 2194 via the rotating shaft between the two clamping plates 2195. The steering head 219 is pushed by the telescopic part of the second telescopic mechanism 212, causing the push rod 2193 between the two clamping plates 2195 to align with the workpiece. The workpiece is conveyed by the two conveyor tables 2, applying force to the push rod 2193, compressing the spring 2192 while retracting it into the sleeve 2191. During the retraction of the top rod 2193, the diagonal brace 2194 is pulled, causing the two clamping plates 2195 to close towards the workpiece until the clamping plates 2195 are completely in contact with the workpiece surface, thus achieving stable clamping of the workpiece.

[0073] At this time, the reversing motor 214 and the electromagnetic component 218 are started, which drive the workpiece to flip through the clamping plate 2195. During the flipping process, the electromagnetic component 218 is energized, and its telescopic part pushes the push rod 2181 to assist in lifting the other end of the workpiece, realizing the automatic flipping operation of the workpiece. During the flipping process, the weight of the workpiece will also continuously apply pressure to the spring 2192 to prevent the push rod 2193 from being pushed out of the sleeve 2191 and causing the clamping plate 2195 to open.

[0074] After the workpiece is flipped, the conveyor belts on the surfaces of the two conveyor tables 2 are still in a guiding state, and their surfaces apply frictional force to the flipped workpiece, moving the workpiece away from the sleeve 2191. Then, the spring 2192, which was compressed due to the pushing of the conveyor table 2 or the weight of the workpiece, is released again. As the push rod 2193 pushes out from inside the sleeve 2191, the two clamping plates 2195 reopen, completing the function of automatically flipping and releasing the workpiece.

[0075] During the lifting and lowering process of the material turning assembly 21, in order to prevent dust from spilling out of the machine base 1, a dust baffle 215 is provided on one side of the support plate 211 located inside the machine base 1. The dust baffle 215 is in contact with the surface of the support plate 211, which allows the dust baffle 215 to slide on the support plate 211 with the crossbeam 213 and to always remain in contact with the surface of the support plate 211 to prevent dust from spilling out.

[0076] The two sets of air boxes 3 are respectively mounted on guide rails above the through section of the conveyor platform 2 located on the machine base 1, to accommodate the sandblasting requirements of workpieces of different specifications. Each air box 3 is equipped with a blower. The blower on the air box 3 at the feeding end of the machine base 1 blows air into the air box 3, while the blower on the air box 3 at the discharging end of the machine base 1 draws air out of the air box 3. The machine base 1 and the two air boxes 3 form a closed sandblasting cavity, reducing dust leakage. The two air boxes 3 respectively form a positive pressure air curtain and a negative pressure channel at the feeding and discharging points of the machine base 1, which can prevent dust from overflowing. At the same time, the dust is drawn away by the external dust removal system. Meanwhile, since the two air boxes 3 form a unidirectional airflow in the sandblasting cavity inside the machine base 1, the fine dust and some small particles of rebound sand generated during the sandblasting process can be blown away, reducing the damage caused by the rebound of dust and sand particles to non-target areas of the workpiece.

[0077] Furthermore, the machine platform 1 is equipped with a return hopper 41 located below the conveyor platform 2. The discharge end of the sand feeder 4 is connected to the feed end of the sandblasting head 118 via a pipeline. The feed end of the sand feeder 4 is connected to the bottom of the return hopper 41 via a pipeline. After the sand particles are collected by the return hopper 41, they are fed into the sand feeder 4 for reuse, continuously supplying sand to the sandblasting head 118.

[0078] The present invention forms a directional negative pressure airflow field in the sandblasting area through the synergistic effect of the gradient aperture baffle 124 and the bidirectional wind box 3. On the one hand, it can avoid direct impact on the surface of the non-target area of ​​the workpiece, and on the other hand, it can effectively blow away the rebound sand particles and dust through the airflow, avoiding secondary impact on the non-target area of ​​the workpiece, thereby improving the sandblasting accuracy and surface quality.

[0079] The present invention integrates the flipping component 21 into the gap of the double conveyor table 2. Through the self-unlocking clamping mechanism, the workpiece is pressed to trigger adaptive clamping. After flipping, it is pushed and released by the conveyor belt on the surface of the conveyor table 2. There is no need for manual flipping, and the cost of independent flipping station and multiple equipment is also saved.

[0080] The conveyor-type sandblasting machine provided by this invention forms a directional airflow field in the sandblasting area through the aperture-decreasing baffle 124 and the bidirectional air box 3, reducing the secondary damage rate of rebounding sand particles and improving the uniformity of surface treatment. Through the steering head 219 integrated into the gap between the two conveyor tables 2, the workpiece is adaptively clamped by springs 2192, diagonal braces 2194, etc., and the workpiece is flipped and released by the electromagnetic component 218, which improves the efficiency of flipping the workpiece and has zero footprint increase. By setting positive and negative pressure air curtain seals and dynamic shielding of dust baffles 215 at the inlet / outlet of the machine table 1, the dust escape rate is greatly reduced, and the sand recycling rate is improved. Finally, the entire process of double-sided sandblasting of complex workpieces is fully automated.

[0081] Working principle: The workpiece is conveyed to the machine base 1 through two sets of conveyor tables 2, and the two sets of air boxes 3 are lowered by the lead screw guide rail, acting on the surface of the conveyor table 2 to form a closed sandblasting chamber; the blower above the two air boxes 3 is started, so that one blows air inward and the other draws air outward. The two air boxes 3 form a unidirectional airflow in the sandblasting chamber inside the machine base 1, effectively blowing away the fine dust and some small particles of rebound sand generated during the sandblasting process; at this time, the sandblasting head 118 is driven by the Y-axis motor 111, the X-axis motor 114 and the Z-axis telescopic rod 117 to move along the X, Y and Z directions to realize the sandblasting operation of the workpiece in various directions; during this process, the dust baffle 215 is driven to move at the sandblasting position of the workpiece by the switching motor 121, and the sandblasting range is adjusted by the through holes 125 of different diameters on the surface of the dust baffle 215 to avoid the impact of sand particles in non-target areas and prevent damage to the workpiece;

[0082] When sandblasting is required on the other side of the workpiece, the workpiece is returned to the entrance via two sets of conveyor tables 2; the telescopic part of the second telescopic machine 212 drives the steering head 219 to rise through the gap between the two sets of conveyor tables 2, so that the push rod 2193 aligns with the workpiece; the workpiece is driven to move towards the push rod 2193 via the conveyor tables 2, and the workpiece exerts a force on the push rod 2193 due to the drive of the conveyor tables 2; during the process of the push rod 2193 being pressed into the sleeve 2191, the diagonal brace 2194 pulls the clamping plate 2195 to close and clamp the upper and lower parts of the workpiece; at this time, the reversing motor 214 drives the steering machine. The bearing connection of head 219 flips over, and at the same time, the telescopic push rod 2181 of electromagnetic component 218 lifts the other end of the workpiece along the rotation direction of the rotating shaft of steering head 219, so that the workpiece flips over and falls back onto the surface of conveyor table 2; conveyor table 2 continues to transport the workpiece towards the outlet, so that push rod 2193 loses the force applied by the workpiece and resets under the action of spring 2192, clamp 2195 opens, and falls back below conveyor table 2 using second telescopic mechanism 212, so that the other side of the workpiece can be sandblasted; this process does not require manual flipping, saving the cost of independent flipping stations and multiple equipment.

[0083] Based on the above embodiments, the Z-direction telescopic rod 117, the first telescopic mechanism 123, and the second telescopic mechanism 212 may be equipped with structures such as cylinders, hydraulic cylinders, and motors with lifting rods, and no restrictions are imposed in this embodiment.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A conveyorized sandblaster characterized in that, The utility model relates to a sand blasting machine, including: A machine table (1), a sand supply machine (4) and two groups of air boxes (3); Two groups of conveying tables (2) which are parallel and pass through the machine table (1); A sand blasting head assembly (11) and a sand blocking assembly (12) which are arranged inside the machine table (1) and above the conveying tables (2); The sand blasting head assembly (11) comprises a sand blasting head (118) which moves along the X, Y and Z directions; The sand blocking assembly (12) comprises a blocking piece (124) which moves along the Y direction, the blocking piece (124) is arranged below the sand blasting head (118), a plurality of through holes (125) are uniformly distributed on the blocking piece (124) along the running direction of the blocking piece (124), and the diameters of the through holes (125) gradually decrease along the running direction; A material turning assembly (21) which is arranged between the two conveying tables (2) and comprises: A turning head (219) which is arranged in a lifting mode, the turning head (219) is driven by a reversing motor (214) to rotate around an axis, and the axis is perpendicular to the conveying direction of the conveying tables (2); A clamping plate (2195) which is arranged on the turning head (219) and automatically clamps a workpiece when subjected to pressure; An electromagnetic element (218) which is connected with a push rod (2181) in a telescopic mode, and the push rod (2181) moves along the rotation direction of the rotating shaft part of the turning head (219).

2. The transfer sandblaster of claim 1 wherein, The two groups of air boxes (3) are arranged above the conveying tables (2) which pass through the machine table (1) in a lifting mode through guide rails, so as to adapt to the sand blasting requirements of workpieces of different specifications; The air boxes (3) are each provided with a blower, the blower arranged on the air box (3) at the feeding end of the machine table (1) is used for air blowing operation into the air box (3), and the blower arranged on the air box (3) at the discharging end of the machine table (1) is used for air extraction operation out of the air box (3).

3. The conveyorized sanding machine of claim 1, wherein, A Y-direction motor (111) is arranged on the inner side of the top of the machine table (1), a first lead screw (112) is connected with the output shaft of the Y-direction motor (111), and a guide plate (113) is threadedly connected with the first lead screw (112); An X-direction motor (114) is arranged on the end of the guide plate (113), a second lead screw (115) is connected with the output shaft of the X-direction motor (114), and a mounting plate (116) is threadedly connected with the second lead screw (115); A Z-direction telescopic rod (117) is arranged on the mounting plate (116), and the sand blasting head (118) is arranged on the telescopic end of the Z-direction telescopic rod (117).

4. The transfer sandblaster of claim 3 wherein, A material returning hopper (41) is arranged below the conveying tables (2) of the machine table (1); The discharging end of the sand supply machine (4) is connected with the feeding end of the sand blasting head (118) through a pipeline; The feeding end of the sand supply machine (4) is connected with the bottom of the material returning hopper (41) through a pipeline.

5. The transfer sandblaster of claim 1 wherein, Two third lead screws (122) which are arranged in parallel are arranged on the inner side of the machine table (1), and the two third lead screws (122) are synchronously driven by a switching motor (121) through a belt. Two third lead screws (122) are respectively in threaded transmission connection with first telescopic machines (123), two ends of the baffle (124) are respectively fixedly connected to telescopic ends of the first telescopic machines (123).

6. The transfer sandblaster of claim 1 wherein, A side of the machine table (1) is provided with a supporting plate (211), an outer bottom side of the supporting plate (211) is provided with a second telescopic machine (212), a telescopic part of the second telescopic machine (212) is connected with a cross frame (213), the cross frame (213) horizontally extends to the inside of the machine table (1); An end of the cross frame (213) located inside the machine table (1) is vertically provided with a supporting rod (217), the supporting rod (217) is provided with a connecting plate (216), the steering head (219) is connected above the connecting plate (216) through a rotating shaft.

7. The conveyorized sanding machine of claim 6, wherein, The reversing motor (214) is installed at an end of the cross frame (213) located outside the machine table (1), an output shaft of the reversing motor (214) is connected with a rotating rod (2141); The connecting plate (216) is connected with a driving gear (2196) through a bearing, an outer side of one side of the steering head (219) is provided with a gear slot, the driving gear (2196) is engaged with the gear slot of the steering head (219), and the shaft end of the driving gear (2196) is in transmission connection with the rotating rod (2141) through a belt.

8. The conveyorized sanding machine of claim 6, wherein, An end of the cross frame (213) located inside the machine table (1) is vertically provided with a supporting rod (217), the supporting rod (217) is provided with a connecting plate (216), the steering head (219) is connected above the connecting plate (216) through a rotating shaft.

9. The transfer sandblaster of claim 1 wherein, The reversing motor (214) is installed at an end of the cross frame (213) located outside the machine table (1), an output shaft of the reversing motor (214) is connected with a rotating rod (2141); The connecting plate (216) is connected with a driving gear (2196) through a bearing, an outer side of one side of the steering head (219) is provided with a gear slot, the driving gear (2196) is engaged with the gear slot of the steering head (219), and the shaft end of the driving gear (2196) is in transmission connection with the rotating rod (2141) through a belt. An end of the cross frame (213) located inside the machine table (1) is vertically provided with a supporting rod (217), the supporting rod (217) is provided with a connecting plate (216), the steering head (219) is connected above the connecting plate (216) through a rotating shaft. The reversing motor (214) is installed at an end of the cross frame (213) located outside the machine table (1), an output shaft of the reversing motor (214) is connected with a rotating rod (2141); The connecting plate (216) is connected with a driving gear (2196) through a bearing, an outer side of one side of the steering head (219) is provided with a gear slot, the driving gear (2196) is engaged with the gear slot of the steering head (219), and the shaft end of the driving gear (2196) is in transmission connection with the rotating rod (2141) through a belt. An end of the cross frame (213) located inside the machine table (1) is vertically provided with a supporting rod (217), the supporting rod (217) is provided with a connecting plate (216), the steering head (219) is connected above the connecting plate (216) through a rotating shaft. The reversing motor (214) is installed at an end of the cross frame (213) located outside the machine table (1), an output shaft of the reversing motor (214) is connected with a rotating rod (2141);

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