A touch screen protective film sandblasting equipment

Abstract

The present invention relates to the technical field of protective film sandblasting, and particularly to a sandblasting processing device for a touch screen protective film, which includes a frame, a conveying device, a sandblasting chamber, support legs, a sand and dust collection chamber, a sand and dust separation and recycling device, a sandblasting device, and an air blowing cleaning device. When the existing sandblasting equipment is used for sandblasting a protective film with a specific shape, the mold cannot be effectively fixed during the transmission process, and when encountering protective films with different widths and shapes, there may be problems such as sand material waste and pollution, and uneven sandblasting on the surface of the protective film. The U-shaped template frame used in the sandblasting processing device for a touch screen protective film provided by the present invention is hinged to the conveyor belt, so that the U-shaped template frame can move around the transmission roller following the conveyor belt and can effectively fix the rectangular template. In addition, the sandblasting nozzle used can adjust the sandblasting width according to the protective film with different widths, avoiding the problems of uneven sandblasting and sandblasting waste caused by the fixed sandblasting width of the sandblasting nozzle.

Description

Technical Field

[0001] The invention relates to the technical field of film sandblasting, in particular to a sandblasting processing device for a touch screen protective film. Background Art

[0002] During the transportation and use of the touch screen, the touch screen protective film is an indispensable part, which can effectively protect the surface of the touch screen. Sandblasting the touch screen protective film can make the surface of the protective film smooth and wear-resistant. Before sandblasting the touch screen protective film, the prepared template is usually pasted on the touch screen protective film to ensure complete sealing. Then, sandblasting is performed on the area not covered by the template. When sandblasting the touch screen protective film, fine sand particles or aluminum oxide particles are sprayed onto the surface of the protective film with a high-pressure airflow.

[0003] Existing sandblasting equipment can complete the surface treatment of workpieces in a short time, with high production efficiency and strong applicability, and can process workpieces of various materials; however, when conventional sandblasting equipment is used to sandblast protective films of specific shapes, the mold cannot be effectively fixed during transmission, and when encountering protective films of different widths and shapes, there may be problems such as sand waste and pollution, as well as uneven sandblasting on the surface of the protective film. Summary of the Invention

[0004] Technical problem to be solved: The present invention provides a touch screen protective film sandblasting processing equipment, which can solve the above-mentioned problems.

[0005] Technical solution: In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution, a touch screen protective film sandblasting processing equipment, including a frame, a conveying device is arranged inside the frame, a sandblasting cabin is arranged at the upper middle end of the frame, a plurality of supporting legs are arranged opposite to each other on the front and rear sides of the lower end of the frame, a sand and dust collection cabin is arranged in the middle of the lower end of the frame, a sand and dust separation and recovery device is arranged on the right side of the sand and dust collection cabin, a sandblasting device is arranged above the inside of the sandblasting cabin, and an air blowing cleaning device is arranged below the sandblasting device.

[0006] The sand blasting device includes an air pump arranged at the upper end of the sand blasting chamber, an air supply pipe is arranged at the right end of the air pump, and the right end of the air supply pipe is vertically connected with a sand inlet pipe, and the sand inlet pipe is located inside the No. 1 rectangular through-hole arranged through the top of the sand blasting chamber, and the top of the sand inlet pipe is symmetrically connected with a diversion pipe corresponding to the direction perpendicular to the air supply pipe. The front and rear sides of the diversion pipe are slidably connected with a sleeve, and the middle of the sand inlet pipe is vertically connected with a No. 1 sand delivery pipe, and a square fixing block is provided at the lower end of the sand inlet pipe, and the lower end of the sleeve away from the No. 1 sand delivery pipe is connected with a No. 2 sand delivery pipe, and square sliders are provided at the lower ends of the No. 2 sand delivery pipes on both sides, and cylindrical cavities are opened inside the square fixing block and the square slider, and the bottom end of the square fixing block is fixedly connected to a supporting plate, and sand retaining plates are provided at the left and right ends of the supporting plate, which are connected to the inner wall of the top of the sand blasting chamber, and the square slider slides The cam is connected to the upper end of the supporting plate, and a rectangular groove is provided on the supporting plate corresponding to the position of the square fixing block and the middle of the square slider. A sandblasting nozzle connected to the cylindrical cavity is provided at the bottom end of the square fixing block and the square slider inside the rectangular groove. A rectangular connecting block is provided at the right end of the square slider, and threaded sleeves with opposite rotation directions are provided at the right ends of the rectangular connecting blocks on both sides. The threaded sleeves on both sides are commonly threadedly connected with a bidirectional screw, and both ends of the bidirectional screw are rotatably connected to the sandblasting cabin. A No. 1 gear is provided in the middle of the bidirectional screw, and a No. 2 gear is engaged with the right end of the No. 1 gear. A transmission shaft rotatably connected to the front side plate of the sandblasting cabin is provided on the rear end face of the No. 2 gear. A No. 1 motor support frame is provided at the position corresponding to the transmission shaft at the front end face of the front side plate of the sandblasting cabin. A No. 1 motor is provided inside the No. 1 motor support frame, and a No. 1 motor is fixedly connected to the output shaft of the No. 1 motor.

[0007] As a preferred technical solution of the present invention, the air blowing cleaning device includes rectangular connecting rods symmetrically arranged on the left and right obliquely below the support flat plate. A second rectangular groove is formed on the side end face of the rectangular connecting rod close to the sand blasting nozzle. Second rectangular through holes are provided on the front and rear side plates of the sand blasting chamber corresponding to the positions of the second rectangular grooves on the left and right sides. Gear shafts are rotatably arranged at the four corners within the rectangular frame formed by the second rectangular groove and the second rectangular through hole. A chain is sleeved among the four gear shafts. A second motor support frame is arranged on the outer wall of the front side plate of the sand blasting chamber below the chain. A micro motor is arranged inside the second motor support frame. The output shaft of the micro motor is fixedly connected with a third gear, and the third gear meshes with the chain. A plurality of nozzle support seats are evenly sleeved in the second rectangular groove and the second rectangular through hole of the chain respectively. A plurality of nozzle support seats located in the same second rectangular groove are connected by a first connecting rod, and a plurality of nozzle support seats located in the same second rectangular through hole are connected by a second connecting rod. A circular air inlet groove is jointly formed inside the nozzle support seat and the corresponding first connecting rod or second connecting rod. The circular air inlet grooves in the second rectangular groove and the second rectangular through hole are both connected to a connecting air pipe. Air pipe limiting cylinders are arranged on the inner sides of the connecting air pipes at the four corners within the rectangular frame formed by the second rectangular groove and the second rectangular through hole. A jet nozzle communicating with the circular air inlet groove is arranged at one end of the nozzle support seat far away from the chain. A third rectangular through hole is vertically arranged on the front side plate of the sand blasting chamber above the nozzle support seat corresponding to the second rectangular through hole. An L-shaped pipe communicating with the air supply pipe is arranged on the upper side inside the third rectangular through hole. One end of the L-shaped pipe located in the third rectangular through hole is fixedly connected with a telescopic air pipe, and the end of the telescopic air pipe far away from the L-shaped pipe communicates with the circular air inlet groove inside the second connecting rod.

[0008] As a preferred technical solution of the present invention, the conveying device includes a plurality of transmission rollers rotatably connected inside the frame from left to right evenly and one end of which extends out of the frame. A conveyor belt is sleeved among the plurality of transmission rollers inside the frame. A fourth gear is arranged at one end of the transmission roller extending out of the frame. A toothed transmission belt is jointly meshed by the plurality of fourth gears. The rear side of the fourth gear located at the right end is fixedly connected to the output shaft of the second motor. A plurality of forward-opening U-shaped template clamping frames are evenly hinged on the surface of the conveyor belt.

[0009] As a preferred technical solution of the present invention, the dust separation and recovery device includes a conveying pipe communicating with the bottom of the dust collection chamber. A second air pump is arranged in the middle of the conveying pipe. One end of the conveying pipe far away from the dust collection chamber communicates with a sand storage chamber. A cylindrical dust separation cavity is formed inside the sand storage chamber. The upper right end of the dust separation cavity communicates with a dust suction pipe. A sand material filter screen is arranged at the pipe orifice at one end of the dust suction pipe close to the dust separation cavity. A dust collector is arranged on the rear end face of the frame below the second motor. One end of the dust suction pipe far away from the dust separation cavity communicates with the dust collector.

[0010] As a preferred technical solution of the present invention, a third air pump is provided at the middle of the first sand delivery pipeline above the sand blasting chamber. One end of the first sand delivery pipeline far from the sand inlet pipeline is connected to a U-shaped sand delivery pipeline, and one end of the U-shaped sand delivery pipeline far from the first sand delivery pipeline is connected to the bottom of the sand and dust separation cavity.

[0011] As a preferred technical solution of the present invention, a U-shaped sliding groove with a rectangular cross-section is provided inside the U-shaped template clamping frame. A rectangular template is arranged inside the U-shaped template clamping frame. Corresponding to the U-shaped sliding groove at the outer end of the rectangular template, there is a U-shaped slider with a rectangular cross-section. The U-shaped slider is slidably connected inside the U-shaped sliding groove. A third rectangular groove smaller than the rectangular template is provided at the upper end of the rectangular template. A first hand-pulling connecting rod is provided on the front end face of the rectangular template. A rectangular retaining strip is provided at the front end of the bottom surface of the rectangular template. Rotary retaining strips are rotatably arranged on the left and right sides of the front end face of the U-shaped template clamping frame corresponding to the positions of the rectangular retaining strips.

[0012] As a preferred technical solution of the present invention, a fourth rectangular through-hole connecting the sand and dust separation cavity is provided at the rear end of the sand storage chamber. A rectangular baffle is slidably arranged inside the fourth rectangular through-hole. A second hand-pulling connecting rod is provided on the rear end face of the rectangular baffle.

[0013] As a preferred technical solution of the present invention, a rectangular sand falling opening is provided at the bottom end of the frame corresponding to the sand and dust collection chamber.

[0014] As a preferred technical solution of the present invention, sand-blocking curtain cloths with the bottom ends higher than the upper end of the rectangular template are provided at both left and right ends of the sand blasting chamber.

[0015] Beneficial effects: 1. The sand blasting nozzle of the sand blasting device adopted by the touch screen protective film sand blasting processing equipment provided by the present invention can adjust the sand blasting width according to the protective films of different widths, avoiding the problems of uneven sand blasting and sand blasting waste caused by the fixed sand blasting width of the sand blasting nozzle.

[0016] 2. The air jet nozzle of the air blowing cleaning device adopted by the touch screen protective film sand blasting processing equipment provided by the present invention can be controlled by a micro motor and linearly reciprocate inside the second rectangular groove and the second rectangular through-hole to comprehensively air-blow and clean the sand blasting area, avoiding the problem of residual fine sand on the rectangular template and in the corner gaps.

[0017] 3. The U-shaped template clamping frame of the conveying device adopted by the touch screen protective film sand blasting processing equipment provided by the present invention is hinged to the conveyor belt, enabling the U-shaped template clamping frame to move around the transmission roller following the conveyor belt and effectively fixing the rectangular template.

[0018] 4. The sand and dust separation and recycling device adopted by the touch screen protective film sand blasting processing equipment provided by the present invention can separate the sand and dust waste generated during the operation, recycle the intact sand materials, and avoid the waste of sand materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention and its features, configurations and advantages will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed on illustrating the subject matter of the present invention.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure from the first perspective of the present invention.

[0021] Figure 2 It is the front view of the present invention.

[0022] Figure 3 It is a top view of the present invention.

[0023] Figure 4 It is a right side view of the present invention.

[0024] Figure 5 It is a half-section view (from back to front) of the present invention.

[0025] Figure 6 It is a half-section view (from right to left) of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the sandblasting device and the air blowing cleaning device of the present invention (excluding the sand baffle).

[0027] Figure 8 This invention Figure 5 Enlarged view of the X in the middle.

[0028] Figure 9 This invention Figure 5 Enlarged view of point N in the middle.

[0029] Figure 10 It is a cross-sectional view (from right to left) of the sand storage chamber of the present invention.

[0030] Figure 11 It is a schematic diagram of the three-dimensional structure of the air blowing cleaning device of the present invention.

[0031] In the figure: 1, frame; 2, conveying device; 28, transmission roller; 29, conveyor belt; 3, sandblasting chamber; 30, fourth gear; 31, toothed drive belt; 32, second motor; 33, C-shaped template clamping frame; 34, C-shaped chute; 35, rectangular template; 36, C-shaped slider; 37, third rectangular groove; 38, first hand-pulled connecting rod; 39, rectangular stop bar; 40, rotary stop bar; 3, sandblasting chamber; 4, support leg; 5, dust collection chamber; 51, rectangular sand dropping port; 6, dust separation and recycling device; 61, conveying pipeline; 62, second air pump; 63, sand storage chamber; 64, dust separation cavity; 65, dust suction pipeline; 66, sand filter screen; 67, vacuum cleaner; 68, fourth rectangular through hole; 69, rectangular baffle; 70, second hand-pulled connecting rod; 7, sandblasting device; 71, first air pump; 72, air supply pipeline; 73, sand inlet pipeline; 74, first rectangular through hole; 75, sleeve; 76, first sand supply pipeline; 77, square fixing block; 78, second sand supply pipeline; 79, square slider; 80, cylindrical cavity; 81, support flat plate; 82, sand baffle; 83, first rectangular groove; 84, sandblasting nozzle; 85, rectangular connecting block; 86, threaded sleeve; 87, bidirectional screw; 88, first gear; 89, second gear; 90, transmission shaft; 91, first motor support frame; 92, first motor; 93, third air pump; 94, C-shaped sand supply pipeline; 95, shunt pipeline; 8, sand baffle curtain; 9, air pipe limiting cylinder; 10, air blowing cleaning device; 11, rectangular connecting rod; 12, second rectangular groove; 13, second rectangular through hole; 14, gear shaft; 15, chain; 16, second motor support frame; 17, micro motor; 18, third gear; 19, nozzle support seat; 20, first connecting rod; 21, second connecting rod; 22, circular air inlet groove; 23, connecting air pipe; 24, air jet nozzle; 25, third rectangular through hole; 26, L-shaped pipeline; 27, telescopic air pipe. Detailed implementation manners

[0032] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the claims.

[0033] Refer to Figure 1-Figure 3 , a sandblasting processing device for a touch screen protective film, comprising a frame 1. A conveying device 2 is arranged inside the frame 1. A sandblasting chamber 3 is arranged at the upper end of the middle part of the frame 1. A plurality of support legs 4 are arranged oppositely on the front and rear sides of the lower end of the frame 1. A dust collection chamber 5 is arranged in the middle of the lower end of the frame 1. A dust separation and recycling device 6 is arranged on the right side of the dust collection chamber 5. A sandblasting device 7 is arranged above the inside of the sandblasting chamber 3. An air blowing cleaning device 10 is arranged below the sandblasting device 7.

[0034] Refer to Figure 1 , Figure 3 , Figure 6 , Figure 7 and Figure 9 The conveying device 2 includes a plurality of transmission rollers 28 that are evenly and rotatably connected inside the frame 1 from left to right and one end of which extends out of the frame 1. A conveyor belt 29 is sleeved on the plurality of transmission rollers 28 inside the frame 1. A fourth gear 30 is provided at one end of the transmission roller 28 extending out of the frame 1. A toothed transmission belt 31 is jointly engaged by the plurality of fourth gears 30. The rear side of the fourth gear 30 at the right end is fixedly connected to the output shaft of the second motor 32. A plurality of U-shaped template clamping frames 33 with openings facing forward are evenly hinged on the surface of the conveyor belt 29 through torsion spring rods.

[0035] Refer to Figure 1-Figure 3 、 Figure 5 and Figure 8 Inside the U-shaped template clamping frame 33, a U-shaped chute 34 with a rectangular cross-section is provided. A rectangular template 35 is arranged inside the U-shaped template clamping frame 33. A U-shaped slider 36 with a rectangular cross-section is provided at the outer end of the rectangular template 35 corresponding to the U-shaped chute 34. The U-shaped slider 36 is slidably connected inside the U-shaped chute 34. A third rectangular groove 37 is provided at the upper end of the rectangular template 35. A first hand-pulling connecting rod 38 is provided on the front end face of the rectangular template 35. A rectangular stop strip 39 is provided at the front end of the bottom surface of the rectangular template 35. Rotary stop strips 40 are rotatably arranged on the left and right sides of the front end face of the U-shaped template clamping frame 33 at the positions corresponding to the rectangular stop strip 39.

[0036] Refer to Figure 1-Figure 3 、 Figure 5-Figure 9 During specific operation, first, the shape of the third rectangular groove 37 at the upper end of the rectangular template 35 can be changed according to the designed sandblasting pattern. A sufficient number of rectangular templates 35 are pre-stored. The rectangular template 35 is divided into upper and lower hinged parts. Open the upper half through which the third rectangular groove 37 runs through and place the protective film on the lower half of the rectangular template 35. After placement, reset the upper half. When the U-shaped template clamping frame 33 rotates to the upper side, rotate the rotary stop strips 40 on the left and right sides of the U-shaped template clamping frame 33 upward and then slide the rectangular template 35 into the U-shaped template clamping frame 33. Then, return the rotary stop strips 40 to their original positions and buckle them on the rectangular stop strip 39. Then, turn on the second motor 32. The second motor 32 drives the toothed transmission belt 31 to rotate through a plurality of fourth gears 30. The toothed transmission belt 31 drives the conveyor belt 29 to rotate. The conveyor belt 29 drives the U-shaped template clamping frame 33 to reciprocate along the surface of the belt. The U-shaped template clamping frame 33 drives the rectangular template 35 to move along the conveyor belt 29. The middle part of the U-shaped template clamping frame 33 is hinged to the conveyor belt 29, so that the U-shaped template clamping frame 33 can follow the conveyor belt 29 to move around the transmission roller 28, and can effectively fix the rectangular template 35. It should be noted that in order to avoid obstruction when the U-shaped template clamping frame 33 turns with the conveyor belt 29, the distance between the frame 1 and the lower end face of the conveyor belt 29 should be greater than half of the width of the U-shaped template clamping frame 33.

[0037] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 10 The sand and dust separation and recovery device 6 includes a conveying pipe 61 connected to the bottom of the sand and dust collecting cabin 5, a No. 2 air pump 62 is provided in the middle of the conveying pipe 61, and the end of the conveying pipe 61 away from the sand and dust collecting cabin 5 is connected to the sand storage cabin 63. A cylindrical sand and dust separation cavity 64 is opened inside the sand storage cabin 63, and a dust suction pipe 65 is connected to the right end of the upper side of the sand and dust separation cavity 64. A sand filter 66 is provided at the pipe mouth of the dust suction pipe 65 near one end of the sand and dust separation cavity 64. A dust collector 67 is provided at the lower end of the No. 2 motor 32 on the rear end face of the frame 1, and the end of the dust suction pipe 65 away from the sand and dust separation cavity 64 is connected to the dust collector 67.

[0038] See Figure 4 and Figure 10 The rear end of the sand storage chamber 63 is provided with a fourth rectangular through hole 68 connected to the sand and dust separation cavity 64, a rectangular baffle 69 is slidably provided in the fourth rectangular through hole 68, and a second hand-pull connecting rod 70 is provided on the rear end surface of the rectangular baffle 69.

[0039] See Figure 1-Figure 3 、 Figure 5 、 Figure 7 and Figure 9, the sandblasting device 7 includes a first air pump 71 disposed at the upper end of the sandblasting chamber 3. A gas supply pipeline 72 is provided at the right end of the first air pump 71. The right end of the gas supply pipeline 72 is vertically connected to a sand inlet pipeline 73. The sand inlet pipeline 73 is located inside a first rectangular through hole 74 penetrating through the top end of the sandblasting chamber 3. The top of the sand inlet pipeline 73 is symmetrically connected with a shunt pipeline 95 in a direction perpendicular to the gas supply pipeline 72. Both the front and rear sides of the shunt pipeline 95 are slidably connected with a sleeve 75. A first sand supply pipeline 76 is vertically connected to the middle of the sand inlet pipeline 73. A square fixing block 77 is provided at the lower end of the sand inlet pipeline 73. The lower end of the sleeve 75 on the side away from the first sand supply pipeline 76 is connected with a second sand supply pipeline 78. Square sliders 79 are provided at the lower ends of both sides of the second sand supply pipeline 78. Cylindrical cavities 80 are provided inside both the square fixing block 77 and the square sliders 79. A support flat plate 81 is fixedly connected to the bottom end of the square fixing block 77. Baffle plates 82 are provided at both the left and right ends of the support flat plate 81 and are connected to the inner wall of the top end of the sandblasting chamber 3. The square slider 79 is slidably connected to the upper end of the support flat plate 81. A first rectangular groove 83 is provided at the position corresponding to the middle of the square fixing block 77 and the square slider 79 on the support flat plate 81. Sandblasting nozzles 84 communicating with the cylindrical cavities 80 are provided at the bottom ends of the square fixing block 77 and the square slider 79 inside the first rectangular groove 83. A rectangular connecting block 85 is provided at the right end of the square slider 79. Threaded sleeves 86 with opposite rotation directions are provided at the right ends of both sides of the rectangular connecting blocks 85 facing each other. A bidirectional screw 87 is commonly threadedly connected to both sides of the threaded sleeves 86, and both ends of the bidirectional screw 87 are rotatably connected to the sandblasting chamber 3. A first gear 88 is provided in the middle of the bidirectional screw 87. A second gear 89 is engaged with the right end of the first gear 88. A transmission shaft 90 is provided on the rear end face of the second gear 89 and is rotatably connected to the front side plate of the sandblasting chamber 3. A first motor support frame 91 is provided at the position corresponding to the transmission shaft 90 on the front end face of the front side plate of the sandblasting chamber 3. A first motor 92 is provided inside the first motor support frame 91. The front end of the transmission shaft 90 is fixedly connected to the output shaft of the first motor 92.

[0040] Refer to Figure 1-Figure 5 , a third air pump 93 is provided at the upper end of the sandblasting chamber 3 in the middle of the first sand supply pipeline 76. One end of the first sand supply pipeline 76 away from the sand inlet pipeline 73 is connected to a U-shaped sand supply pipeline 94. One end of the U-shaped sand supply pipeline 94 away from the first sand supply pipeline 76 is connected to the bottom of the dust separation cavity 64.

[0041] Refer to Figure 1-Figure 5 , Figure 7 , Figure 9 and Figure 10, during actual operation, before starting sandblasting, the rectangular sand baffle 82 is pulled out by the second manual connecting rod 70. Enough sand materials are filled into the sand and dust separation cavity 64. Then, according to the width of the rectangular template 35, the first motor 92 is started. The first motor 92 drives the second gear 89 to rotate through the transmission shaft 90. The second gear 89 drives the bidirectional screw 87 to rotate through the first gear 88. The bidirectional screw 87 drives the threaded sleeves 86 on both the front and rear sides to move reciprocally towards each other. The threaded sleeves 86 on both the front and rear sides simultaneously drive the square sliders 79 on both the front and rear sides to slide reciprocally towards each other through the rectangular connecting blocks 85. When the square sliders 79 on both the front and rear sides move to appropriate positions, the first motor 92 is turned off. When the rectangular template 35 moves to below the sandblasting nozzle 84 following the conveyor belt 29, the second motor 32 is turned off, and the rectangular template 35 stops moving. The third air pump 93 is started. The third air pump 93 sucks the sand materials in the sand and dust separation cavity 64 into the first sand delivery pipe 76 through the U-shaped sand delivery pipe 94. The first sand delivery pipe 76 then transports the sand materials to the sand inlet pipe 73. Then, the first air pump 71 transports compressed air to the sand inlet pipe 73 through the air delivery pipe 72. The sand inlet pipe 73 transports compressed air to the cylindrical cavity 80 in the square fixing block 77 through the first sand delivery pipe 76. And the sleeves 75 on both sides of the sand inlet pipe 73 transport compressed air to the cylindrical cavity 80 in the square slider 79 through the second sand delivery pipe 78. The compressed air is then input into the sandblasting nozzle 84 from the cylindrical cavity 80 and sprayed out from the sandblasting nozzle 84. At the same time, the compressed air also drives the sand materials to be sprayed out from the sandblasting nozzle 84. The fourth rectangular through hole 68, the rectangular baffle 69, and the second manual connecting rod 70 provided on the sand storage bin 63 can facilitate the feeding of sand materials into the sand storage bin 63 more conveniently. The sandblasting nozzle 84 can adjust the sandblasting width according to the protective films of different widths, avoiding the problems of uneven sandblasting and sandblasting waste caused by the fixed sandblasting width of the sandblasting nozzle 84.

[0042] See Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 and Figure 11The air blowing cleaning device 10 includes a rectangular connecting rod 11 symmetrically arranged on the left and right sides of the supporting plate 81. The side end surface of the rectangular connecting rod 11 near the sandblasting nozzle 84 is provided with a second rectangular groove 12. The front and rear side panels of the sandblasting chamber 3 are provided with a second rectangular through hole 13 corresponding to the second rectangular groove 12 on the left and right sides. The four corners of the rectangular frame formed by the second rectangular groove 12 and the second rectangular through hole 13 are all rotatably provided with gear shafts 14. A chain 15 is commonly provided between the four gear shafts 14. Sandblasting The outer wall of the front side plate of the cabin 3 is provided with a No. 2 motor support frame 16 below the chain 15, and a micro motor 17 is provided inside the No. 2 motor support frame 16. The output shaft of the micro motor 17 is fixedly connected to the No. 3 gear 18, and the No. 3 gear 18 is engaged with the chain 15. The chain 15 is evenly provided with a plurality of nozzle support seats 19 in the No. 2 rectangular groove 12 and the No. 2 rectangular through hole 13. The plurality of nozzle support seats 19 located in the same No. 2 rectangular groove 12 are connected by a No. 1 connecting rod 20. The nozzle support seats 19 located in the same No. 2 rectangular groove 12 are connected by a No. 1 connecting rod 20. The plurality of nozzle support seats 19 in the rectangular through hole 13 are connected by a No. 2 connecting rod 21. A circular air inlet groove 22 is provided inside the nozzle support seat 19 and the corresponding No. 1 connecting rod 20 or No. 2 connecting rod 21. The circular air inlet groove 22 located in the No. 2 rectangular groove 12 and the No. 2 rectangular through hole 13 are interconnected with a connecting air pipe 23. The four corners of the rectangular frame formed by the No. 2 rectangular groove 12 and the No. 2 rectangular through hole 13 are located inside the connecting air pipe 23 and are provided with an air pipe limiting cylinder 9. The nozzle support seat 19 is away from the chain One end of the strip 15 is provided with an air nozzle 24 connected to the circular air inlet groove 22, and the front side plate of the sandblasting chamber 3 is vertically provided with a No. 3 rectangular through hole 25 corresponding to the No. 2 rectangular through hole 13 at the upper end of the nozzle support seat 19. An L-shaped pipe 26 connected to the air supply pipe 72 is provided on the upper side of the No. 3 rectangular through hole 25. One end of the L-shaped pipe 26 located in the No. 3 rectangular through hole 25 is fixedly connected to a telescopic air pipe 27, and the end of the telescopic air pipe 27 away from the L-shaped pipe 26 is connected to the circular air inlet groove 22 in the No. 2 connecting rod 21.

[0043] See Figure 1-Figure 3 The left and right ends of the sand blasting chamber 3 are both provided with sand-blocking curtains 8 whose bottom ends are higher than the upper ends of the rectangular templates 35 .

[0044] See Figure 1-Figure 3 、 Figure 5 、 Figure 6 and Figure 7, during specific operation, when the sandblasting nozzle 84 sandblasts the protective film within the rectangular template 35, the micro-motor 17 is turned on. The micro-motor 17 drives the third gear 18 to rotate reciprocally, and the third gear 18 drives the chain 15 to rotate reciprocally around the gear shaft 14. The chain 15 drives the air jet nozzle 24 to perform linear reciprocating motion within the second rectangular groove 12 and the second rectangular through-hole 13 respectively through the nozzle support base 19. Meanwhile, the L-shaped pipe 26 inputs compressed air into the circular air inlet groove 22 within the second connecting rod 21 through the telescopic air pipe 27. The compressed air is input into the circular air inlet groove 22 within the second rectangular groove 12 and the second rectangular through-hole 13 through the connecting air pipe 23. The compressed air is simultaneously ejected from multiple air jet nozzles 24 to perform air blowing and cleaning on the sandblasting area. When the sandblasting of the protective film within one rectangular template 35 is completed, the second motor 32 is turned on, and the rectangular template 35 starts to move. The first air pump 71 and the third air pump 93 are turned off. The first air pump 71 stops输送 compressed air to the sand inlet pipe 73 through the air supply pipe 72. Meanwhile, the L-shaped pipe 26 stops输送 compressed air. When the next rectangular template 35 moves below the sandblasting nozzle 84, the above operations are repeated. When the sandblasted rectangular template 35 moves to the tail end of the conveyor belt 29, the rotary stoppers 40 on the left and right sides of the U-shaped template clamping frame 33 are rotated upward, and the rectangular template 35 is taken out from the U-shaped template clamping frame 33. The sand-blocking curtain cloths 8 provided at the left and right ends of the sandblasting chamber 3 can further prevent dust leakage. The air jet nozzle 24 can be controlled by the micro-motor 17 to perform linear reciprocating movement within the second rectangular groove 12 and the second rectangular through-hole 13, performing comprehensive air blowing and cleaning on the sandblasting area, avoiding the problem of residual fine sand in the rectangular template 35 and the corner gaps.

[0045] Refer to Figure 5 and Figure 6 , a rectangular sand falling opening 51 is provided at the bottom end of the frame 1 corresponding to the sand and dust collection chamber 5.

[0046] Refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 10 , during specific operation, the air jet nozzle 24 blows the sand and dust waste after the sandblasting operation into the sand and dust collection chamber 5 through the rectangular sand falling opening 51. The second air pump 62 controls the conveying pipe 61 to suck the sand and dust waste into the sand and dust separation cavity 64 inside the sand storage chamber 63. The damaged sand materials and fine dust are sucked into the inside of the dust collector 67 through the dust suction pipe 65 after being filtered by the sand material filter screen 66. The intact sand materials are sent into the first sand delivery pipe 76 through the U-shaped sand delivery pipe 94 at the bottom of the sand and dust separation cavity 64. The sand and dust separation and recovery device 6 can separate the sand and dust waste after the operation, enabling the intact sand materials to be reused, avoiding the waste of sand materials.

[0047] It should be noted that there are some unclear parts in the original text like "输送" which might need further clarification in the source language to ensure more accurate translation.During operation: S1: Place the protective film in advance within the rectangular template 35. After rotating the rotary stoppers 40 on the left and right sides of the U-shaped template clamping frame 33 upward, slide the rectangular template 35 into the U-shaped template clamping frame 33, then return the rotary stoppers 40 to their original positions and latch them onto the rectangular stopper 39. Next, turn on the second motor 32. The second motor 32 drives the toothed drive belt 31 to rotate through multiple fourth gears 30. The toothed drive belt 31 drives the conveyor belt 29 to rotate, and the conveyor belt 29 drives the U-shaped template clamping frame 33 to reciprocate along the surface of the belt. The U-shaped template clamping frame 33 drives the rectangular template 35 to move along the conveyor belt 29.

[0048] S2: Before starting sandblasting, pull out the rectangular sand baffle 82 through the second hand-operated connecting rod 70, fill the sand separation cavity 64 with sufficient sand material, and then, according to the width of the rectangular template 35, start the first motor 92. The first motor 92 drives the second gear 89 to rotate through the transmission shaft 90. The second gear 89 drives the bidirectional screw 87 to rotate through the first gear 88. The bidirectional screw 87 drives the threaded sleeves 86 on the front and rear sides to reciprocate towards each other. The threaded sleeves 86 on the front and rear sides simultaneously drive the square sliders 79 on the front and rear sides to reciprocate and slide towards each other through the rectangular connecting blocks 85. When the square sliders 79 on the front and rear sides move to appropriate positions, turn off the first motor 92. When the rectangular template 35 moves to below the sandblasting nozzle 84 following the conveyor belt 29, turn off the second motor 32, and the rectangular template 35 stops moving. Start the third air pump 93. The third air pump 93 sucks the sand material in the sand separation cavity 64 into the first sand delivery pipe 76 through the U-shaped sand delivery pipe 94. The first sand delivery pipe 76 then transports the sand material to the sand inlet pipe 73. Next, the first air pump 71 transports compressed air to the sand inlet pipe 73 through the air delivery pipe 72. The sand inlet pipe 73 transports compressed air to the cylindrical cavity 80 in the square fixing block 77 through the first sand delivery pipe 76, and the sleeves 75 on both sides of the sand inlet pipe 73 transport compressed air to the cylindrical cavity 80 in the square slider 79 through the second sand delivery pipe 78. The compressed air is then input from the cylindrical cavity 80 into the sandblasting nozzle 84 and ejected from the sandblasting nozzle 84. At the same time, the compressed air also drives the sand material to be ejected from the sandblasting nozzle 84 to perform sandblasting treatment on the protective film.

[0049] S3: When the sandblasting nozzle 84 performs sandblasting on the protective film within the rectangular template 35, turn on the micro motor 17. The micro motor 17 drives the third gear 18 to rotate reciprocally. The third gear 18 drives the chain 15 to rotate reciprocally around the gear shaft 14. The chain 15 drives the air jet nozzle 24 to perform linear reciprocating motion within the second rectangular groove 12 and the second rectangular through hole 13 respectively through the nozzle support base 19. Meanwhile, the L-shaped pipe 26 inputs compressed air into the circular air inlet groove 22 within the second connecting rod 21 through the telescopic air pipe 27. The compressed air is input into the circular air inlet groove 22 within the second rectangular groove 12 and the second rectangular through hole 13 through the connecting air pipe 23. The compressed air is simultaneously ejected from multiple air jet nozzles 24 to perform air blowing and cleaning on the sandblasting area. When the sandblasting of the protective film within one rectangular template 35 is completed, turn on the second motor 32, and the rectangular template 35 starts to move. Turn off the first air pump 71 and the third air pump 93. The first air pump 71 stops输送compressed air to the sand inlet pipe 73 through the air supply pipe 72. Meanwhile, the L-shaped pipe 26 stops输送compressed air. When the next rectangular template 35 moves below the sandblasting nozzle 84, repeat the above operations. When the sandblasted rectangular template 35 moves to the end of the conveyor belt 29, rotate the rotary bars 40 on the left and right sides of the U-shaped template clamping frame 33 upward and take out the rectangular template 35 from the U-shaped template clamping frame 33. The sand blocking curtain cloths 8 provided at the left and right ends of the sandblasting chamber 3 can further prevent dust leakage.

[0050] S4: The air jet nozzle 24 blows the sand and dust waste after the sandblasting operation into the sand and dust collection chamber 5 through the rectangular sand falling port 51. The second air pump 62 controls the conveying pipe 61 to suck the sand and dust waste into the sand and dust separation cavity 64 inside the sand storage chamber 63. The damaged sand materials and fine dust are sucked into the inside of the vacuum cleaner 67 through the dust suction pipe 65 after being filtered by the sand material filter screen 66. The intact sand materials are sent into the first sand supply pipe 76 through the U-shaped sand supply pipe 94 at the bottom of the sand and dust separation cavity 64.

[0051] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. It should be noted that there are some inaccuracies in the original text where the Chinese characters "输送" are used without a clear context for what is being conveyed. I've translated it as "输送" for the time being, but it might need to be adjusted based on the correct meaning in the actual context.

Claims

1. A touch screen protective film sandblasting device, comprising a frame (1), characterized in that: The frame (1) is provided with a conveying device (2) inside, a sandblasting cabin (3) is provided at the upper middle end of the frame (1), a sand dust collecting cabin (5) is provided at the middle of the lower end of the frame (1), a sand dust separation and recovery device (6) is provided on the right side of the sand dust collecting cabin (5), a sandblasting device (7) is provided above the inside of the sandblasting cabin (3), and an air blowing cleaning device (10) is provided below the sandblasting device (7); wherein: The sandblasting device (7) comprises a No. 1 air pump (71) provided at the upper end of the sandblasting chamber (3), an air delivery pipe (72) provided at the right end of the No. 1 air pump (71), a sand inlet pipe (73) connected at the right end of the air delivery pipe (72), the sand inlet pipe (73) being located inside a No. 1 rectangular through hole (74) provided through the top of the sandblasting chamber (3), a diversion pipe (95) being symmetrically connected at the top of the sand inlet pipe (73), sleeves (75) being slidably connected at the front and rear sides of the diversion pipe (95), the middle part of the sand inlet pipe (73) being connected to the No. 1 sand delivery pipe (74), and the sand delivery pipe (73) being connected to the No. 1 sand delivery pipe (74). 6), a square fixing block (77) is provided at the lower end of the sand feeding pipe (73), the lower end of the sleeve (75) away from the No. 1 sand feeding pipe (76) is connected to the No. 2 sand feeding pipe (78), the lower ends of the No. 2 sand feeding pipes (78) on both sides are provided with square sliders (79), cylindrical cavities (80) are provided inside the square fixing block (77) and the square sliders (79), the bottom end of the square fixing block (77) is fixedly connected to a supporting plate (81), and sand retaining plates (82) are provided at both left and right ends of the supporting plate (81) and connected to the sand blasting chamber (3) The inner wall of the top end, the square slider (79) is slidably connected to the upper end of the support plate (81), the support plate (81) is provided with a rectangular groove (83) corresponding to the position of the middle of the square fixed block (77) and the square slider (79), the bottom ends of the square fixed block (77) and the square slider (79) are provided with a sandblasting nozzle (84) connected to the cylindrical cavity (80) inside the rectangular groove (83), the right end of the square slider (79) is provided with a rectangular connecting block (85), and the right ends of the rectangular connecting blocks (85) on both sides are oppositely provided with threaded sleeves with opposite rotation directions. (86), the threaded sleeves (86) on both sides are commonly threadedly connected with a bidirectional screw (87), and the bidirectional screw (87) is rotatably connected to the sandblasting cabin (3), a No. 1 gear (88) is provided in the middle of the bidirectional screw (87), the right end of the No. 1 gear (88) is meshed with a No. 2 gear (89), and the rear end face of the No. 2 gear (89) is provided with a transmission shaft (90) rotatably connected to the front side plate of the sandblasting cabin (3), the front side plate of the sandblasting cabin (3) is provided with a No. 1 motor (92), and the front end of the transmission shaft (90) is fixedly connected to the output shaft of the No. 1 motor (92).

2. The touch screen protective film sandblasting equipment according to claim 1, characterized in that: The air blowing cleaning device (10) includes rectangular connecting rods (11) symmetrically arranged on the left and right diagonally below the support flat plate (81). A second rectangular groove (12) is provided on the side end surface of the rectangular connecting rod (11) close to the sand blasting nozzle (84). Second rectangular through holes (13) are provided on the front and rear side plates of the sand blasting chamber (3) corresponding to the positions of the second rectangular grooves (12) on the left and right sides. Gear shafts (14) are rotatably provided at the four corners within the rectangular frame formed by the second rectangular groove (12) and the second rectangular through hole (13). A chain (15) is commonly sleeved between the four gear shafts (14). A second motor support frame (16) is provided on the outer wall of the front side plate of the sand blasting chamber (3) below the chain (15). A micro motor (17) is provided inside the second motor support frame (16). The output shaft of the micro motor (17) is fixedly connected to a third gear (18). The third gear (18) meshes with the chain (15). A plurality of nozzle support seats (19) are evenly sleeved in the second rectangular groove (12) and the second rectangular through hole (13) of the chain (15). The plurality of nozzle support seats (19) located in the same second rectangular groove (12) are connected by a first connecting rod (20). The plurality of nozzle support seats (19) located in the same second rectangular through hole (13) are connected by a second connecting rod (21). A circular air inlet groove (22) is commonly provided inside the nozzle support seat (19) and the corresponding first connecting rod (20) or second connecting rod (21). The circular air inlet grooves (22) in the second rectangular groove (12) and the second rectangular through hole (13) are interconnected by connecting air pipes (23). Air pipe limiting cylinders (9) are provided inside the connecting air pipes (23) at the four corners within the rectangular frame formed by the second rectangular groove (12) and the second rectangular through hole (13). A jet nozzle (24) communicating with the circular air inlet groove (22) is provided at one end of the nozzle support seat (19) away from the chain (15). A third rectangular through hole (25) is vertically provided on the front side plate of the sand blasting chamber (3) corresponding to the upper end of the nozzle support seat (19) and corresponding to the second rectangular through hole (13). An L-shaped pipe (26) communicating with the air supply pipe (72) is provided on the upper side inside the third rectangular through hole (25). One end of the L-shaped pipe (26) located in the third rectangular through hole (25) is fixedly connected to a telescopic air pipe (27). The end of the telescopic air pipe (27) away from the L-shaped pipe (26) communicates with the circular air inlet groove (22) inside the second connecting rod (21).

3. The touch screen protective film sandblasting equipment according to claim 1, characterized in that: The conveying device (2) includes a plurality of transmission rollers (28) rotatably connected to the inside of the frame (1) from left to right at equal intervals and one end of which extends out of the frame (1). A conveyor belt (29) is commonly sleeved among the plurality of transmission rollers (28) inside the frame (1). A fourth gear (30) is provided at one end of the transmission roller (28) extending out of the frame (1). A toothed drive belt (31) is commonly meshed with the plurality of fourth gears (30). The rear side of the fourth gear (30) located at the right end is fixedly connected to the output shaft of the second motor (32). A plurality of U-shaped template clamping frames (33) with openings facing forward are evenly hinged on the surface of the conveyor belt (29) through torsion spring rods.

4. The touch screen protective film sandblasting equipment according to claim 3, characterized in that: The dust separation and recovery device (6) includes a conveying pipeline (61) connected to the bottom of the dust collection chamber (5). A second air pump (62) is provided in the middle of the conveying pipeline (61). One end of the conveying pipeline (61) far from the dust collection chamber (5) is connected to a sand storage chamber (63). A cylindrical dust separation cavity (64) is formed inside the sand storage chamber (63). The right end of the upper side of the dust separation cavity (64) is connected to a dust suction pipeline (65). A sand filter screen (66) is provided at the pipe opening of one end of the dust suction pipeline (65) close to the dust separation cavity (64). A dust collector (67) is provided at the lower end of the second motor (32) on the rear end face of the frame (1). One end of the dust suction pipeline (65) far from the dust separation cavity (64) is connected to the dust collector (67).

5. The touch screen protective film sandblasting equipment according to claim 1, characterized in that: A third air pump (93) is provided at the upper end of the sand blasting chamber (3) in the middle of the first sand conveying pipeline (76). One end of the first sand conveying pipeline (76) far from the sand inlet pipeline (73) is connected to a U-shaped sand conveying pipeline (94). One end of the U-shaped sand conveying pipeline (94) far from the first sand conveying pipeline (76) is connected to the bottom of the dust separation cavity (64).

6. The touch screen protective film sandblasting equipment according to claim 3, characterized in that: A U-shaped chute (34) with a rectangular cross-section is formed inside the U-shaped template clamping frame (33). A rectangular template (35) is provided inside the U-shaped template clamping frame (33). A U-shaped slider (36) with a rectangular cross-section is provided at the outer end of the rectangular template (35) corresponding to the U-shaped chute (34). The U-shaped slider (36) is slidably connected to the inside of the U-shaped chute (34). A third rectangular groove (37) is formed at the upper end of the rectangular template (35). A first hand-pulling connecting rod (38) is provided on the front end face of the rectangular template (35). A rectangular retaining strip (39) is provided at the front end of the bottom surface of the rectangular template (35). Rotary retaining strips (40) are rotatably provided at the left and right sides of the front end face of the U-shaped template clamping frame (33) corresponding to the positions of the rectangular retaining strip (39).

7. The touch screen protective film sandblasting equipment according to claim 4, characterized in that: A fourth rectangular through-hole (68) connecting the dust separation cavity (64) is provided at the rear end of the sand storage chamber (63). A rectangular baffle (69) is slidably provided in the fourth rectangular through-hole (68). A second hand-pulling connecting rod (70) is provided on the rear end face of the rectangular baffle (69).

8. The touch screen protective film sandblasting equipment according to claim 1, characterized in that: A rectangular sand falling port (51) corresponding to the dust collection chamber (5) is provided at the bottom end of the frame (1).

9. The touch screen protective film sandblasting equipment according to claim 6, characterized in that: Sand retaining curtain cloths (8) with the bottom ends higher than the upper end of the rectangular template (35) are provided at both the left and right ends of the sand blasting chamber (3).

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