Automatic sand feeding device of tapper

Abstract

The automatic sand feeding device comprises a rack and a machining bin arranged at the top of the rack, and a material taking and placing platform, a rotating disc feeding structure, a feeding and discharging claw structure, a welding flux feeding structure, a sand feeding rack structure, a conveying structure and a sand feeding claw structure are arranged in the machining bin; the turntable feeding structure is positioned in the center of the bottom wall of the processing bin; the loading and unloading claw structure is arranged between the material taking and placing platform and the turntable feeding structure; the conveying structure is arranged in the output conveying direction of the solder feeding structure; the sand feeding rack structure is located over the sand feeding claw structure. The sanding claw structure is located on the machining bin and located on the outer side of the conveying structure. The device is reasonable in structural arrangement, convenient and fast to operate, beneficial to improving the effectiveness of feeding, solder feeding and sand feeding operation, capable of greatly improving the sand feeding machining efficiency of the whole structure, beneficial to reducing the labor cost and the material cost, beneficial to improving the stability and effectiveness of the whole machining technology, high in applicability and good in practicability.

Description

Technical Field

[0001] The invention belongs to the technical field of workpiece surface roughening treatment, and in particular relates to an automatic sanding device for a hole opener. Background Art

[0002] Sanding process is a common surface treatment process, which is used to roughen the surface of materials or workpieces to increase their adhesion and wear resistance. In the prior art, the steps of sanding process are to manually immerse the workpiece in glue (or solder paste), manually shake off excess glue (or solder paste), and then place it under a sanding machine. The sand flows to the surface of the workpiece through a funnel, and the worker manually rotates the workpiece to perform sanding operations. Although it can meet the general usage requirements, it needs to be completed by different manual workstations. It not only requires a longer assembly line, which is time-consuming and labor-intensive, but also occupies a large space. With the existing process effect, the amount of glue (solder paste) and sanding on the workpiece is uneven, and the processing efficiency and quality cannot be guaranteed, which further affects the processing cost, so the applicability and practicality are limited. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic sand feeding device for a hole opener which has a reasonable structure and is conducive to improving the sand feeding efficiency.

[0004] The technical solution to achieve the purpose of the present invention is an automatic sanding device for a hole opener, comprising a frame, a processing chamber arranged on the top of the frame, wherein a material taking and placing platform, a turntable feeding structure, an upper and lower material claw structure, an upper solder structure, an upper sand material rack structure, a conveying structure and an upper sand claw structure are arranged in the processing chamber;

[0005] The turntable feeding structure is located at the center of the bottom wall of the processing chamber;

[0006] The material taking and placing platform, the upper solder structure and the conveying structure are arranged around the turntable feeding structure, and the material taking and placing platform and the upper solder structure are arranged at both ends of the diameter of the turntable feeding structure;

[0007] The loading and unloading claw structure is arranged between the material picking and unloading platform and the turntable feeding structure, and is used to feed the workpiece to be processed on the material picking and unloading platform to the turntable feeding structure and to feed the sanded finished workpiece on the turntable feeding structure to the material picking and unloading platform;

[0008] The conveying structure is arranged in the output conveying direction of the upper solder structure, and is used to convey the soldered workpiece on the turntable feeding structure to the upper sand claw structure;

[0009] The upper sand material rack structure is located directly above the upper sand claw structure;

[0010] The upper sand claw structure is located on the processing chamber and outside the conveying structure, and the upper sand claw structure is used to transfer the material on the conveying structure to the lower part of the upper sand material rack structure for sanding and then transfer it back to the conveying structure.

[0011] It is further preferred that: the turntable feeding structure includes a base, a stepping motor, a synchronous wheel, a quarter divider, four infrared sensors and a dividing turntable;

[0012] The base is fixed at the center of the bottom wall of the processing chamber;

[0013] The stepper motor is fixed on the base and connected to the synchronous wheel;

[0014] The quarter divider is connected to the synchronous wheel and is used to stop the indexing turntable every time it rotates 90 degrees;

[0015] The four infrared sensors are fixed on the base and are located at the exact center of the indexing turntable, and the four infrared sensors are arranged at 90 degrees to each other;

[0016] The indexing turntable is arranged on the quarter divider.

[0017] It is further preferred that: the upper and lower claw structures include two parallel n-shaped brackets, a transverse support rod, a lifting servo motor driven linear module, a claw body, a first servo motor driven linear module and a second servo motor driven linear module;

[0018] Two n-shaped brackets are respectively fixed on the bottom wall of the processing chamber, and the transverse rods of the n-shaped brackets are parallel to the connection line between the material taking and placing platform and the upper solder structure;

[0019] The first servo motor drives the linear module at the top of one of the n-shaped brackets, and is used to drive the lateral support rod to translate;

[0020] The two ends of the transverse support rod are respectively connected to the tops of the two n-shaped brackets through sliders, and one of the sliders is spirally connected to the first servo motor driven linear module;

[0021] The second servo motor drives the linear module to be fixed on the transverse support rod, and is used to drive the lifting servo motor to drive the linear module to translate;

[0022] The lifting servo motor driven linear module is spirally connected to the second servo motor driven linear module through a slider;

[0023] The material claw body is fixed on the piston shaft of the linear module driven by the lifting servo motor, and is used for the material picking and placing operations between the material picking and placing platform and the turntable feeding structure.

[0024] It is further preferred that: the upper solder structure comprises an upper solder conveying claw structure, an upper solder tank, and an upper solder swinging and drying claw structure;

[0025] The upper solder tank is located between the upper solder conveying claw structure and the upper solder swinging and drying claw structure;

[0026] The upper solder transfer claw structure is arranged at the edge of the turntable feeding structure, and is used to clamp the workpiece on the turntable feeding structure and transfer it to be immersed in the upper solder tank;

[0027] The upper solder swinging and drying claw structure is fixed on the bottom wall of the processing bin and is used to swing the workpiece with solder applied to dry the excess tin.

[0028] It is further preferred that: the upper solder conveying claw structure comprises a lifting cylinder, a rotating cylinder, a swinging cylinder and a conveying claw body;

[0029] The lifting cylinder is fixed on the bottom wall of the processing chamber and is used to adjust the lifting and lowering of the rotating cylinder;

[0030] The rotating cylinder is fixed on the piston shaft of the lifting cylinder and is used to rotate the swing cylinder horizontally;

[0031] The swing cylinder is fixed on the top of the rotating cylinder and is used to rotate and swing the conveying claw body vertically;

[0032] The transmission claw body is fixed on the piston shaft of the swing cylinder and is used for clamping and positioning the workpiece.

[0033] It is further preferred that: the upper solder swinging and drying claw structure comprises a vertical guide seat, a swinging cylinder and a clamping claw body;

[0034] The vertical guide seat is fixed on the bottom wall of the processing chamber, the swing cylinder is fixed on the vertical guide seat, and the clamping claw body is fixed on the piston shaft of the swing cylinder.

[0035] It is further preferred that: the upper sand material rack structure comprises an upper sand material bin and an upper powder material bin;

[0036] The upper sand bin and the upper powder bin are fixed on the lateral side of one of the n-shaped brackets;

[0037] A sand upper air source direct vibrator is fixed at the discharge end of the upper sand material bin, and a powder upper air source direct vibrator is fixed at the discharge end of the upper powder material bin.

[0038] It is further preferred that: the conveying structure is the same as the upper solder conveying claw structure, and is used to convey the soldered workpiece on the turntable feeding structure to the upper sand claw structure.

[0039] It is further preferred that: the upper sand claw structure includes a mounting seat, a lifting support seat, a linear slide rail, a lifting motor screw assembly, a translation motor screw assembly, an angle adjustment servo motor, a harmonic reducer, a three-jaw chuck and a control motor;

[0040] The mounting seat is fixed on the frame;

[0041] The lifting motor screw rod assembly is fixed on the mounting seat and is used for lifting and lowering adjustment of the lifting support seat;

[0042] The lifting support seat is spirally connected to the lifting motor lead screw assembly;

[0043] The linear slide rail is arranged on the top of the lifting support seat;

[0044] The translation motor screw assembly is fixed on the linear slide rail and is used to adjust the angle of the servo motor to translate to the position directly below the upper sand bin or the upper powder bin;

[0045] The harmonic reducer is fixed on the main shaft of the angle adjustment servo motor;

[0046] The control motor is fixed on the main shaft of the harmonic reducer and is used to control the rotation of the three-jaw chuck;

[0047] The three-jaw chuck is fixed on the main shaft of the control motor and is used for clamping the workpiece.

[0048] Further preferably, a central control box is fixed on the outer wall of the processing chamber.

[0049] Its working principle is briefly described as follows: during processing, the workpiece to be processed is placed on the loading and unloading platform, and the upper and lower material claw structures clamp the workpiece to be processed and place it on the turntable feeding structure. The turntable feeding structure rotates 90 degrees, and the workpiece to be processed enters the upper solder structure position. At this time, the upper solder conveying claw structure of the upper solder structure clamps the workpiece on the turntable feeding structure and rotates it into the upper part of the upper solder tank, and descends to immerse the workpiece in the upper solder tank to complete the soldering, and then rises to make the workpiece leave the upper solder tank and be conveyed to the upper solder swing drying claw structure. The upper solder swing drying claw structure swings to remove excess glue, and then returns it to the upper solder conveying claw structure to put the workpiece with solder back on the turntable feeding structure. The turntable feeding structure continues to rotate 90 degrees. At this time, the conveyor The structure clamps the soldered workpiece on the turntable feeding knot and sends it to the upper sand claw structure for clamping. The upper sand claw structure clamps and sends it to the bottom of the sanding bin through the translation motor lead screw assembly and the angle adjustment servo motor. While sanding, the motor rotation is controlled to make the surface of the workpiece evenly sanded, and then the workpiece that has been sanded is sent to the bottom of the powder bin through the translation motor lead screw to complete the powdering operation. The workpiece is then sent back to the conveying structure by the upper sand claw structure and then to the turntable feeding structure by the conveying structure, and then continues to rotate 90 degrees. At this time, the upper and lower material claw structures clamp the processed workpiece and put it back on the loading and unloading platform. During the above operations, the turntable feeding structure can continuously place the workpiece to be processed, that is, continuously complete the loading, soldering, sanding and unloading operations.

[0050] The present invention has positive effects: the structural arrangement of the present invention is reasonable, which is not only convenient to operate, but also conducive to improving the effectiveness of feeding, soldering and sanding operations, greatly improving the sanding processing efficiency of the entire structure, but also conducive to reducing labor costs and material costs, and also conducive to improving the stability and effectiveness of the overall processing technology, with strong applicability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0052] Figure 1 It is a structural schematic diagram of the present invention;

[0053] Figure 2 This is a schematic diagram of the structure when the processing chamber is opened in the present invention;

[0054] Figure 3 It is a schematic diagram of the specific structure of the upper and lower material claw structure and the sand material rack structure in the present invention;

[0055] Figure 4 It is a specific structural schematic diagram of the turntable feeding structure of the present invention;

[0056] Figure 5 is a schematic diagram of the specific structure of the upper solder structure in the present invention;

[0057] Figure 6 It is a specific structural schematic diagram of the upper sand claw structure in the present invention.

[0058] Figure numerals: frame 1, processing bin 2, material taking and placing platform 3, turntable feeding structure 4, base 41, stepping motor 42, synchronous wheel 43, quarter divider 44, infrared sensor 45, indexing turntable 46, upper and lower material claw structure 5, n-shaped bracket 51, transverse support rod 52, lifting servo motor driven linear module 53, material claw body 54, first servo motor driven linear module 55, second servo motor driven linear module 56, upper solder structure 6, upper solder conveying claw structure 61, lifting cylinder 611, rotating cylinder 612, Swinging cylinder 613, conveying claw body 614, upper solder trough 62, upper solder swinging and drying claw structure 63, vertical guide seat 631, swinging cylinder 632, clamping claw body 633, upper sand material rack structure 7, upper sand material bin 71, upper powder material bin 72, conveying structure 8, upper sand claw structure 9, mounting seat 91, lifting support seat 92, linear slide rail 93, lifting motor lead screw assembly 94, translation motor lead screw assembly 95, angle adjustment servo motor 96, harmonic reducer 97, three-jaw chuck 98 and control motor 99, central control box 10. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] Example

[0061] See Figures 1 to 6 As shown, an automatic sanding device for a hole opener includes a frame 1, a processing chamber 2 arranged on the top of the frame, and a material taking and placing platform 3, a turntable feeding structure 4, an upper and lower material claw structure 5, an upper solder structure 6, an upper sand material rack structure 7, a conveying structure 8 and an upper sand claw structure 9 are arranged in the processing chamber; in this embodiment, the frame is a conventional structure and is simply used, and the processing chamber is a cavity for processing operations, and in order to facilitate the taking and placing of materials, a door body is arranged on the processing chamber, so that the processing can be carried out in a sealed space, thereby improving the processing safety and facilitating the material taking and placing operations. The upper solder structure can realize the gluing or soldering operations.

[0062] During the assembly process, the turntable feeding structure is located at the center of the bottom wall of the processing bin; it is mainly used for continuous material transmission. The use of the turntable method is conducive to saving space, reducing labor costs, and reducing labor costs and material costs. At the same time, the material taking and unloading platform, the upper solder structure and the conveying structure are arranged around the turntable feeding structure, and the material taking and unloading platform and the upper solder structure are arranged at both ends of the diameter of the turntable feeding structure; the upper and lower material claw structures are arranged between the material taking and unloading platform and the turntable feeding structure, and are used to feed the workpiece to be processed on the material taking and unloading platform onto the turntable feeding structure and to feed the finished workpiece with sand on the turntable feeding structure onto the material taking and unloading platform; the conveying structure is arranged in the output transmission direction of the upper solder structure, and is used to transfer the workpiece with solder on the turntable feeding structure to the upper sand claw structure; the upper sand material rack structure is located directly above the upper sand claw structure; the upper sand claw structure is located on the processing bin and outside the conveying structure, and the upper sand claw structure is used to transfer the material on the conveying structure to the lower part of the upper sand material rack structure for sanding and then return it to the conveying structure.

[0063] In this embodiment, the turntable feeding structure includes a base 41, a stepper motor 42, a synchronous wheel 43, a four-equal-divider 44, four infrared sensors 45 and a dividing turntable 46; during assembly, the base is fixed at the center of the bottom wall of the processing chamber; the stepper motor is fixed on the base and connected to the synchronous wheel; the four-equal-divider is connected to the synchronous wheel, and is used to stop the dividing turntable every 90 degrees of rotation; the four infrared sensors are fixed on the base and are located at the center of the dividing turntable, and the four infrared sensors are arranged at 90 degrees to each other; the dividing turntable is arranged on the four-equal-divider. The infrared sensor is mainly used to sense whether there is a workpiece at the corresponding position. If not, no corresponding operation is required. The four-equal-divider is used mainly to facilitate continuous processing operations and ensure processing efficiency.

[0064] In actual application, the upper and lower material claw structure includes two parallel n-shaped brackets 51, a transverse support rod 52, a lifting servo motor driven linear module 53, a material claw body 54, a first servo motor driven linear module 55 and a second servo motor driven linear module 56; during assembly, the two n-shaped brackets are respectively fixed on the bottom wall of the processing bin, and the transverse rods of the n-shaped brackets are parallel to the line connecting the material picking and unloading platform and the upper solder structure; the first servo motor driven linear module is located at the top of one of the n-shaped brackets, and is used to drive the transverse support rod to translate; the two ends of the transverse support rod are respectively connected to the top of the two n-shaped brackets through sliders, and one of the sliders is spirally connected to the first servo motor driven linear module; its second servo motor driven linear module is fixed on the transverse support rod, and is used to drive the lifting servo motor driven linear module to translate; the lifting servo motor driven linear module is spirally connected to the second servo motor driven linear module through a slider; the material claw body is fixed on the piston shaft of the lifting servo motor driven linear module, and is used for picking and unloading operations between the material picking and unloading platform and the turntable feeding structure. Through the above structure, loading and unloading operations can be realized at different positions, thereby improving the effectiveness and stability of the loading and unloading operations.

[0065] During actual application, the upper solder structure includes an upper solder conveying claw structure 61, an upper solder trough 62, and an upper solder swinging and drying claw structure 63; during assembly, the upper solder trough is located between the upper solder conveying claw structure and the upper solder swinging and drying claw structure; the upper solder conveying claw structure is arranged at the edge of the turntable feeding structure, and is used to clamp and transfer the workpiece on the turntable feeding structure and immerse it in the upper solder trough; the upper solder swinging and drying claw structure is fixed on the bottom wall of the processing bin, and is used to swing the workpiece with solder on it to dry out excess tin. The upper solder conveying claw structure includes a lifting cylinder 611, a rotating cylinder 612, a swinging cylinder 613 and a conveying claw body 614; during installation, the lifting cylinder is fixed on the bottom wall of the processing bin to adjust the lifting and lowering of the rotating cylinder; and the rotating cylinder is fixed on the piston shaft of the lifting cylinder to rotate the swinging cylinder horizontally; at the same time, the swinging cylinder is fixed on the top of the rotating cylinder to rotate and swing the conveying claw body vertically; and the conveying claw body is fixed on the piston shaft of the swinging cylinder to clamp and position the workpiece. It can complete the clamping, conveying, and lifting operations of the workpiece, so that it can meet the use of different functions and improve its scope of application.

[0066] And in the actual application process, the upper solder swinging claw structure includes a vertical guide seat 631, a swinging cylinder 632 and a clamping claw body 633; ​​during assembly, the vertical guide seat is fixed on the bottom wall of the processing chamber, the swinging cylinder is fixed on the vertical guide seat, and the clamping claw body is fixed on the piston shaft of the swinging cylinder. It is mainly used to dry the excess tin on the workpiece to ensure the effectiveness and reliability of subsequent sanding. The upper solder is mainly used for subsequent sanding and bonding.

[0067] In actual application, the upper sand material rack structure includes an upper sand material bin 71 and an upper powder material bin 72; during assembly, the upper sand material bin and the upper powder material bin are fixed on the lateral side of one of the n-shaped brackets; the discharge end of the upper sand material bin is fixed with an upper sand air source direct vibrator, and the discharge end of the upper powder material bin is fixed with an upper powder air source direct vibrator. The upper sand air source direct vibrator and the upper powder air source direct vibrator are both conventional structures of the prior art, which are simply applied to ensure the effectiveness and reliability of sanding and powdering, and cooperate with the rotation of the three-jaw chuck to achieve uniform sanding and powdering operations on the surface of the workpiece.

[0068] In actual application, the conveying structure is the same as the upper solder conveying claw structure, and is used to convey the soldered workpiece on the turntable feeding structure to the upper sand claw structure. And the upper sand claw structure includes a mounting seat 91, a lifting support seat 92, a linear slide rail 93, a lifting motor lead screw assembly 94, a translation motor lead screw assembly 95, an angle adjustment servo motor 96, a harmonic reducer 97, a three-jaw chuck 98 and a control motor 99; during assembly, the mounting seat is fixed on the frame; the lifting motor lead screw assembly is fixed on the mounting seat and is used for lifting and lowering adjustment of the lifting support seat; the lifting support seat is spirally connected to the lifting motor lead screw assembly; the linear slide rail is arranged on the top of the lifting support seat; the translation motor lead screw assembly is fixed on the linear slide rail, and is used for translating the angle adjustment servo motor to the bottom of the upper sand bin or the bottom of the upper powder bin; the harmonic reducer is fixed on the main shaft of the angle adjustment servo motor; the control motor is fixed on the main shaft of the harmonic reducer, and is used to control the rotation of the three-jaw chuck; the three-jaw chuck is fixed on the main shaft of the control motor, and is used to clamp the workpiece. The workpiece can be translated, rotated and angle adjusted on it to ensure the effectiveness and reliability of sanding and powdering.

[0069] Meanwhile, in actual application, a central control box 10 is fixed on the outer wall of the processing chamber, which is mainly used for operation control and setting of various parameters.

[0070] Its working principle is briefly described as follows: during processing, the workpiece to be processed is placed on the loading and unloading platform, and the upper and lower material claw structures clamp the workpiece to be processed and place it on the turntable feeding structure. The turntable feeding structure rotates 90 degrees, and the workpiece to be processed enters the upper solder structure position. At this time, the upper solder conveying claw structure of the upper solder structure clamps the workpiece on the turntable feeding structure and rotates it into the upper part of the upper solder tank, and descends to immerse the workpiece in the upper solder tank to complete the soldering, and then rises to make the workpiece leave the upper solder tank and be conveyed to the upper solder swing drying claw structure. The upper solder swing drying claw structure swings to remove excess glue, and then returns it to the upper solder conveying claw structure to put the workpiece with solder back on the turntable feeding structure. The turntable feeding structure continues to rotate 90 degrees. At this time, the conveyor The structure clamps the soldered workpiece on the turntable feeding knot and sends it to the upper sand claw structure for clamping. The upper sand claw structure clamps and sends it to the bottom of the sanding bin through the translation motor lead screw assembly and the angle adjustment servo motor. While sanding, the motor rotation is controlled to make the surface of the workpiece evenly sanded, and then the workpiece that has been sanded is sent to the bottom of the powder bin through the translation motor lead screw to complete the powdering operation. The workpiece is then sent back to the conveying structure by the upper sand claw structure and then to the turntable feeding structure by the conveying structure, and then continues to rotate 90 degrees. At this time, the upper and lower material claw structures clamp the processed workpiece and put it back on the loading and unloading platform. During the above operations, the turntable feeding structure can continuously place the workpiece to be processed, that is, continuously complete the loading, soldering, sanding and unloading operations.

[0071] The present invention has positive effects: the structural arrangement of the present invention is reasonable, which is not only convenient to operate, but also conducive to improving the effectiveness of feeding, soldering and sanding operations, greatly improving the sanding processing efficiency of the entire structure, but also conducive to reducing labor costs and material costs, and also conducive to improving the stability and effectiveness of the overall processing technology, with strong applicability and good practicality.

[0072] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0073] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. An automatic sanding device for a hole opener, comprising a frame and a processing chamber arranged on the top of the frame, characterized in that: The processing chamber is provided with a material taking and placing platform, a turntable feeding structure, an upper and lower material claw structure, an upper solder structure, an upper sand material rack structure, a conveying structure and an upper sand claw structure; The turntable feeding structure is located at the center of the bottom wall of the processing chamber; The material taking and placing platform, the upper solder structure and the conveying structure are arranged around the turntable feeding structure, and the material taking and placing platform and the upper solder structure are arranged at both ends of the diameter of the turntable feeding structure; The loading and unloading claw structure is arranged between the material picking and unloading platform and the turntable feeding structure, and is used to feed the workpiece to be processed on the material picking and unloading platform to the turntable feeding structure and to feed the sanded finished workpiece on the turntable feeding structure to the material picking and unloading platform; The conveying structure is arranged in the output conveying direction of the upper solder structure, and is used to convey the soldered workpiece on the turntable feeding structure to the upper sand claw structure; The upper sand material rack structure is located directly above the upper sand claw structure; The upper sand claw structure is located on the processing chamber and outside the conveying structure, and the upper sand claw structure is used to transfer the material on the conveying structure to the lower part of the upper sand material rack structure for sanding and then transfer it back to the conveying structure.

2. The automatic sanding device for a hole opener according to claim 1, characterized in that: The turntable feeding structure includes a base, a stepping motor, a synchronous wheel, a quarter divider, four infrared sensors and a dividing turntable; The base is fixed at the center of the bottom wall of the processing chamber; The stepper motor is fixed on the base and connected to the synchronous wheel; The quarter divider is connected to the synchronous wheel and is used to stop the indexing turntable every time it rotates 90 degrees; The four infrared sensors are fixed on the base and are located at the exact center of the indexing turntable, and the four infrared sensors are arranged at 90 degrees to each other; The indexing turntable is arranged on the quarter divider.

3. The automatic sanding device for a hole opener according to claim 2, characterized in that: The upper and lower claw structure includes two parallel N-shaped brackets, a transverse support rod, a lifting servo motor driven linear module, a claw body, a first servo motor driven linear module and a second servo motor driven linear module; Two n-shaped brackets are respectively fixed on the bottom wall of the processing chamber, and the transverse rods of the n-shaped brackets are parallel to the connection line between the material taking and placing platform and the upper solder structure; The first servo motor drives the linear module at the top of one of the n-shaped brackets, and is used to drive the lateral support rod to translate; The two ends of the transverse support rod are respectively connected to the tops of the two n-shaped brackets through sliders, and one of the sliders is spirally connected to the first servo motor driven linear module; The second servo motor drives the linear module to be fixed on the transverse support rod, and is used to drive the lifting servo motor to drive the linear module to translate; The lifting servo motor driven linear module is spirally connected to the second servo motor driven linear module through a slider; The material claw body is fixed on the piston shaft of the linear module driven by the lifting servo motor, and is used for the material picking and placing operations between the material picking and placing platform and the turntable feeding structure.

4. The automatic sanding device for a hole opener according to claim 3, characterized in that: The upper solder structure includes an upper solder conveying claw structure, an upper solder tank, and an upper solder swinging and drying claw structure; The upper solder tank is located between the upper solder conveying claw structure and the upper solder swinging and drying claw structure; The upper solder transfer claw structure is arranged at the edge of the turntable feeding structure, and is used to clamp the workpiece on the turntable feeding structure and transfer it to be immersed in the upper solder tank; The upper solder swinging and drying claw structure is fixed on the bottom wall of the processing bin and is used to swing the workpiece with solder applied to dry the excess tin.

5. The automatic sanding device for a hole opener according to claim 4, characterized in that: The upper solder conveying claw structure comprises a lifting cylinder, a rotating cylinder, a swinging cylinder and a conveying claw body; The lifting cylinder is fixed on the bottom wall of the processing chamber and is used to adjust the lifting and lowering of the rotating cylinder; The rotating cylinder is fixed on the piston shaft of the lifting cylinder and is used to rotate the swing cylinder horizontally; The swing cylinder is fixed on the top of the rotating cylinder and is used to rotate and swing the conveying claw body vertically; The transmission claw body is fixed on the piston shaft of the swing cylinder and is used for clamping and positioning the workpiece.

6. The automatic sanding device for a hole opener according to claim 5, characterized in that: The upper solder swinging and drying claw structure comprises a vertical guide seat, a swinging cylinder and a clamping claw body; The vertical guide seat is fixed on the bottom wall of the processing chamber, the swing cylinder is fixed on the vertical guide seat, and the clamping claw body is fixed on the piston shaft of the swing cylinder.

7. The automatic sanding device for a hole opener according to claim 3, characterized in that: The upper sand material rack structure includes an upper sand material bin and an upper powder material bin; The upper sand bin and the upper powder bin are fixed on the lateral side of one of the n-shaped brackets; A sand upper air source direct vibrator is fixed at the discharge end of the upper sand material bin, and a powder upper air source direct vibrator is fixed at the discharge end of the upper powder material bin.

8. The automatic sanding device for a hole opener according to claim 5, characterized in that: The conveying structure is the same as the upper solder conveying claw structure, and is used to convey the soldered workpiece on the turntable feeding structure to the upper sand claw structure.

9. The automatic sanding device for a hole opener according to claim 7, characterized in that: The upper sand claw structure includes a mounting seat, a lifting support seat, a linear slide rail, a lifting motor screw assembly, a translation motor screw assembly, an angle adjustment servo motor, a harmonic reducer, a three-claw chuck and a control motor; The mounting seat is fixed on the frame; The lifting motor screw rod assembly is fixed on the mounting seat and is used for lifting and lowering adjustment of the lifting support seat; The lifting support seat is spirally connected to the lifting motor lead screw assembly; The linear slide rail is arranged on the top of the lifting support seat; The translation motor lead screw assembly is fixed on the linear slide rail and is used to adjust the angle of the servo motor to translate to the position directly below the upper sand bin or the upper powder bin; The harmonic reducer is fixed on the main shaft of the angle adjustment servo motor; The control motor is fixed on the main shaft of the harmonic reducer and is used to control the rotation of the three-jaw chuck; The three-jaw chuck is fixed on the main shaft of the control motor and is used for clamping the workpiece.

10. The automatic sanding device for a hole opener according to claim 1, characterized in that: A central control box is fixed on the outer wall of the processing warehouse.

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