An arc edge grinding device for processing acrylic sheets

Abstract

The present invention relates to the technical field of grinding machine tools, and specifically relates to an arc edge grinding device for processing acrylic sheets, including a control machine tool and a grinding module frame fixedly arranged on the control machine tool. A parallel pressure roller is rotatably arranged on the grinding module frame, and two groups of heat-resistant clamping belts are symmetrically arranged up and down on one side of the grinding module frame. The parallel pressure roller supports the heat-resistant clamping belts, so that the heat-resistant clamping belts form a plane parallel to the acrylic sheet; for the arc edge grinding device for processing acrylic sheets of the present invention, through the cooperation of structures such as heat-resistant clamping belts, flame spraying clamping bars, and arc grinding wheels, the arc edge formed by grinding with the arc grinding wheel can be subjected to flame spraying treatment, making the arc edge of the acrylic material smoother, and through the setting of the heat-resistant clamping belts, the flame can be restricted.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding machine tools, and particularly to an arc edge grinding device for processing acrylic plates. Background Art

[0002] Acrylic plates, also known as specially treated plexiglass, are polymethyl methacrylate plates polymerized from methyl methacrylate monomers. In the production and processing of acrylic plates, according to process requirements, the edges of acrylic plates often need to be ground into an arc shape. In the prior art, a grinding machine drives an arc grinding wheel to rotate at a high speed to perform arc grinding on the edges of acrylic plates. However, the arc edges after grinding are usually not smooth enough, and the processing quality is not high. If direct flame spraying treatment is carried out later to improve the smoothness of the arc edges after grinding, the flame generated by the flame spraying is likely to affect the two flat surfaces of the acrylic plate. Especially when there are frosted prints on the two flat surfaces of the acrylic plate, the flame spraying will cause the frosted prints to disappear. Summary of the Invention

[0003] The purpose of the present invention is to provide an arc edge grinding device for processing acrylic plates, so as to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: An arc edge grinding device for processing acrylic plates, including a control machine tool and a grinding module frame fixedly arranged on the control machine tool. A parallel pressure roller is rotatably arranged on the grinding module frame. Two groups of heat-resistant clamping belts are symmetrically arranged up and down on one side of the grinding module frame. The parallel pressure roller supports the heat-resistant clamping belts, so that the heat-resistant clamping belts form a plane parallel to the acrylic plate.

[0005] The planes parallel to the acrylic plate formed by the two groups of symmetrically arranged heat-resistant clamping belts up and down respectively correspond to and block the upper and lower sides of the acrylic plate.

[0006] A flame spraying strip and an arc grinding wheel are arranged on the grinding module frame. The arc grinding wheel rotates to grind the acrylic plate to form an arc edge. The flame spraying strip is fixedly installed on the grinding module frame and is located between the two groups of heat-resistant clamping belts. The flame spraying strip performs flame spraying treatment on the arc edge after grinding. At this time, the heat-resistant clamping belts limit the flame.

[0007] An air blowing powder spray pipe is arranged between the arc grinding wheel and the heat-resistant clamping belt. An air flow is sprayed through the air blowing powder spray pipe to pre-clean the acrylic plate. One end of the air blowing powder spray pipe is connected and communicated with an electromagnetic air valve. A high-pressure connecting pipe is connected and communicated with the electromagnetic air valve. The connection on-off between the high-pressure connecting pipe and the air blowing powder spray pipe is controlled by the electromagnetic air valve.

[0008] A transverse back plate is fixedly arranged on the polishing module frame, a right-angle side frame is fixedly arranged on the transverse back plate, a slide rail rod is arranged on the right-angle side frame, and a driving module is arranged on an external sliding sleeve of the slide rail rod.

[0009] A tool back plate is detachably fixedly mounted on the driving module, on which a V-shaped pre-grinding knife is arranged. The driving module is axially reciprocated along the length direction of the slide rail rod, so that the V-shaped pre-grinding knife can be driven to pre-grind the edge of the acrylic sheet. After pre-grinding by the V-shaped pre-grinding knife, the acrylic sheet is grinded by rotating the arc grinding wheel.

[0010] A module spring is arranged between the right-angle side frame and the driving module, and elastic pressure is applied to the driving module through the module spring, so that the driving module has an elastic tendency to move toward the direction of the arc grinding wheel; a protruding driving part is fixedly arranged on the arc grinding wheel, and when the arc grinding wheel rotates, the protruding driving part can intermittently squeeze the driving module, so that the driving module elastically compresses the module spring.

[0011] An upper driving roller and a lower driving roller are rotatably arranged on the grinding module frame, and the upper driving roller is located above the lower driving roller. The upper driving roller and the lower driving roller respectively cooperate with the parallel pressure rollers to support the heat-resistant belt, and the upper driving roller and the lower driving roller respectively drive the corresponding heat-resistant belt to rotate.

[0012] A reversing gear and a matching gear are rotatably arranged on the polishing module frame, the reversing gear and the matching gear are meshed with each other, and the reversing gear is coaxially and correspondingly connected to the upper driving roller for transmission.

[0013] A combined synchronous wheel is coaxially fixed on the mating gear, a single synchronous wheel is coaxially fixed on the lower driving roller, a synchronous belt is arranged between the combined synchronous wheel and the single synchronous wheel for synchronous transmission, and when the single synchronous wheel drives the lower driving roller to rotate, the upper driving roller can rotate in the opposite direction.

[0014] A servo motor is fixedly arranged on the polishing module frame, and the servo motor is used to drive the single synchronous wheel to rotate.

[0015] A partition plate is provided between the powder blowing nozzle and the heat-resistant clamping belt, and the partition plate is fixedly connected to the polishing module frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The arc-edge grinding device for processing acrylic sheets of the present invention, through the cooperation of structures such as heat-resistant clamping belts, flame-spraying clamping bars, and arc grinding wheels, can perform flame-spraying treatment on the arc edges formed by grinding with the arc grinding wheels, making the arc edges of the acrylic material smoother. And through the setting of the heat-resistant clamping belts, the flame can be restricted to avoid the influence of flame-spraying on the two flat surfaces of the acrylic sheet. The heat-resistant clamping belts rotate in a rolling cycle, which can prevent the same part from contacting the flame for a long time and overheating, and can ensure a good low-temperature state.

[0018] Through the cooperation of structures such as the convex driving part, driving module, and V-shaped pre-grinding knife set, the rotation of the arc grinding wheel can drive the V-shaped pre-grinding knife to reciprocate at a high frequency. The acrylic sheet is pre-treated by the V-shaped pre-grinding knife to cut off the triangular cross-section surplus material, thereby reducing the cutting amount of the arc grinding wheel. When the feed speed is constant, a finer arc grinding wheel can be used for the arc grinding wheel, so as to improve the grinding quality of the arc edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is Figure 1 The enlarged schematic diagram of area A in

[0021] Figure 3 It is a schematic diagram of another angle of the overall structure of the present invention.

[0022] Figure 4 It is Figure 3 The enlarged schematic diagram of area B in

[0023] Figure 5 It is a top view schematic diagram of the overall structure of the present invention.

[0024] Figure 6 It is Figure 5 The enlarged schematic diagram of area C in

[0025] Figure 7 It is a schematic diagram of the structure of the grinding module frame of the present invention.

[0026] Figure 8 It is Figure 7 The enlarged schematic diagram of area D in

[0027] Figure 9 It is a front view of the structure of the grinding module frame of the present invention.

[0028] Figure 10 It is Figure 9 The enlarged schematic diagram of area E in

[0029] Figure 11It is a schematic diagram of the working principle of the V-shaped pre-grinding knife and the arc grinding wheel of the present invention.

[0030] In the figure: 1, control machine tool; 2, grinding module frame; 3, parallel pressure roller; 4, heat-resistant clamping belt; 5, flame spray clamping strip; 6, arc grinding wheel; 7, powder blowing nozzle; 8, partition clamping plate; 701, electromagnetic air valve; 702, high-pressure connecting pipe; 601, horizontal back plate; 602, right-angle side frame; 603, slide rail rod; 604, drive module; 605, tool back plate; 606, V-type pre-grinding knife; 607, module spring; 608, raised drive part; 201, upper drive roller; 202, lower drive roller; 203, reversing gear; 204, matching gear; 205, combined synchronous wheel; 206, single synchronous wheel; 207, synchronous belt; 208, servo motor; 101, feed track; 102, feed drive frame; 103, pressure plate module; 104, lifting clamping plate. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figures 1 to 11 The present invention provides a technical solution: an arc edge grinding device for acrylic sheet processing, comprising a control machine tool 1 and a grinding module frame 2 fixedly arranged on the control machine tool 1, a parallel pressure roller 3 is rotatably arranged on the grinding module frame 2, and two groups of heat-resistant clamping belts 4 are symmetrically arranged on one side of the grinding module frame 2, and the heat-resistant clamping belts 4 are made of steel belts or glass fiber belts. The heat-resistant clamping belts 4 are supported by the parallel pressure rollers 3 so that the heat-resistant clamping belts 4 form a plane parallel to the acrylic sheet, such as Figure 8 As shown in the figure; the planes parallel to the acrylic sheet are formed by two groups of upper and lower symmetrical heat-resistant clamping bands 4, which correspond to the upper and lower sides of the acrylic sheet respectively; the grinding module frame 2 is provided with a flame clamping strip 5 and an arc grinding wheel 6, and the arc grinding wheel 6 grinds the acrylic sheet by rotating to form an arc edge; a high-speed motor is provided in the control machine tool 1, and the arc grinding wheel 6 is connected to the high-speed motor in the control machine tool 1, thereby driving the arc grinding wheel 6 to rotate.

[0033] The flame jet clamp 5 is fixedly installed with the grinding module frame 2, and the flame jet clamp 5 is located between the two groups of heat-resistant clamps 4. The flame jet clamp 5 includes an igniter and a gas injection hole. The igniter ignites the combustible gas output from the gas injection hole to realize flame jet. The flame jet clamp 5 is used to perform flame jet treatment on the edge of the polished arc. At this time, the heat-resistant clamp 4 limits the flame.

[0034] A powder blowing nozzle 7 is arranged between the arc grinding wheel 6 and the heat-resistant clamping belt 4. The acrylic sheet is pre-cleaned by spraying air through the powder blowing nozzle 7. One end of the powder blowing nozzle 7 is connected to an electromagnetic valve 701, and a high-pressure connecting pipe 702 is connected to the electromagnetic valve 701. The connection between the high-pressure connecting pipe 702 and the powder blowing nozzle 7 is controlled by the electromagnetic valve 701.

[0035] like Figure 8 As shown in the figure, a horizontal back plate 601 is fixedly provided on the grinding module frame 2, a right angle side frame 602 is fixedly provided on the horizontal back plate 601, a slide rail rod 603 is provided on the right angle side frame 602, and a driving module 604 is provided on the outer sliding sleeve of the slide rail rod 603. A tool back plate 605 is detachably fixedly installed on the driving module 604, and a V-shaped pre-sharpening knife 606 is provided on the tool back plate 605. When the V-shaped pre-sharpening knife 606 is worn, the tool back plate 605 and the V-shaped pre-sharpening knife 606 can be replaced by removing the bolts between the driving module 604 and the tool back plate 605. The specific structure of the V-shaped pre-sharpening knife 606 is as follows Figure 8 As shown in the figure, it has a V-shaped groove and a vertical groove pattern to increase the grinding performance. The driving module 604 can move back and forth axially along the length direction of the slide rail rod 603 to drive the V-shaped pre-grinding knife 606 to pre-grind the edge of the acrylic sheet. After the V-shaped pre-grinding knife 606 pre-grinds, the arc grinding wheel 6 rotates to grind the acrylic sheet.

[0036] A module spring 607 is provided between the right-angle side frame 602 and the driving module 604. The module spring 607 applies elastic pressure to the driving module 604, so that the driving module 604 has an elastic tendency to move toward the direction of the arc grinding wheel 6. A protruding driving part 608 is fixedly provided on the arc grinding wheel 6. When the arc grinding wheel 6 rotates, the protruding driving part 608 can intermittently squeeze the driving module 604, so that the driving module 604 elastically compresses the module spring 607. The above structure is driven by the rotation of the arc grinding wheel 6, which reduces the use of motors while achieving synchronous control, and has a lower manufacturing cost.

[0037] An upper driving roller 201 and a lower driving roller 202 are rotatably arranged on the grinding module frame 2, and the upper driving roller 201 is located above the lower driving roller 202. The upper driving roller 201 and the lower driving roller 202 respectively cooperate with the parallel pressure roller 3 to support the heat-resistant entrainment belt 4, and the upper driving roller 201 and the lower driving roller 202 respectively drive the corresponding heat-resistant entrainment belt 4 to rotate.

[0038] A reversing gear 203 and a matching gear 204 are rotatably provided on the polishing module frame 2 . The reversing gear 203 and the matching gear 204 are meshed with each other. The reversing gear 203 is coaxially connected with the upper driving roller 201 for corresponding transmission.

[0039] A combined synchronous wheel 205 is coaxially fixed on the matching gear 204, a single synchronous wheel 206 is coaxially fixed on the lower driving roller 202, and a synchronous belt 207 is arranged between the combined synchronous wheel 205 and the single synchronous wheel 206 for synchronous transmission. When the single synchronous wheel 206 drives the lower driving roller 202 to rotate, the upper driving roller 201 can rotate in the opposite direction. A servo motor 208 is fixed on the polishing module frame 2, and the servo motor 208 is used to drive the single synchronous wheel 206 to rotate.

[0040] A partition plate 8 is provided between the powder blowing nozzle 7 and the heat-resistant clamping belt 4 , and the partition plate 8 is fixedly connected to the polishing module frame 2 .

[0041] like Figure 3 As shown in the figure, a feed track 101 is arranged on the control machine tool 1, and a feed drive frame 102 is arranged above the feed track 101. The feed drive frame 102 can move along the feed track 101, so as to realize the feeding control of the acrylic sheet. A pressing plate module 103 is fixedly arranged on the feed drive frame 102, and a lifting clamping plate 104 is arranged below the pressing plate module 103. The lifting and lowering movement of the lifting clamping plate 104 is controlled by the pressing plate module 103, and the acrylic sheet can be clamped and fixed when the lifting clamping plate 104 descends.

[0042] When the present invention is in use, the arc grinding wheel 6 is attached Figure 6 In the top view angle in the middle, it is in a clockwise high-speed rotation state, so that the powder chips generated by the circular arc grinding wheel 6 are thrown in a direction away from the powder blowing nozzle 7.

[0043] When the arc grinding wheel 6 rotates at high speed, the arc grinding wheel 6 intermittently squeezes the driving module 604 through the protruding driving part 608, and cooperates with the restoring elasticity of the module spring 607, so that the driving module 604 and the V-shaped pre-sharpening knife 606 are in a high-speed reciprocating movement state. Figure 8 When the edge of the acrylic sheet passes through the V-shaped pre-grinding knife 606, the triangular cross-section residual material 11 is firstly ground and cut off, and then the arc grinding wheel 6 is used for arc grinding.

[0044] The above specific principle process is as follows Figure 11 As shown in , when the complete acrylic sheet 10 passes through the V-shaped pre-grinding knife 606 , the V-shaped pre-grinding knife 606 first grinds away the triangular cross-section residual material 11 , and the arc grinding wheel 6 then grinds away the residual material 12 , and finally forms an arc edge 13 .

[0045] During the period, high-pressure air is blown through the powder blowing nozzle 7 to remove powder chips. Then, the arc edge of the acrylic sheet enters between the upper and lower groups of heat-resistant clamps 4, so that the arc edge of the acrylic sheet is between the planes of the upper and lower groups of heat-resistant clamps 4. As Figure 10 shown in, when the flame spraying strip 5 sprays the flame, the flame smooths the arc edge of the acrylic sheet. At the same time, the heat-resistant clamp 4 blocks and limits the flame to prevent the flame from covering the upper and lower flat surfaces of the acrylic sheet.

[0046] The servo motor 208 is driven to rotate the single-body synchronous pulley 206 and the lower driving roller 202. As Figure 4 shown in, through the transmission of the synchronous belt 207, the upper driving roller 201 and the lower driving roller 202 rotate synchronously and in opposite directions. The upper driving roller 201 and the lower driving roller 202 respectively drive the corresponding heat-resistant clamps 4 to rotate, so that the heat-resistant clamps 4 move synchronously with the fed acrylic sheet. As Figure 4 shown in, the upper driving roller 201 is far enough away from the parallel pressure roller 3, so that the heat-resistant clamp 4 is longer and has sufficient heat dissipation time. Thus, when the heat-resistant clamp 4 contacts the flame, the same part contacts the flame briefly. When the heat-resistant clamp 4 rotates one week, this part has returned to room temperature when it is heated by the flame again. A blowing device can be arranged outside the heat-resistant clamp 4 to assist in cooling the heat-resistant clamp 4 to reduce the circumference of the heat-resistant clamp 4, which is not shown in this application.

[0047] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An arc edge grinding device for processing acrylic sheets, comprising a control machine tool and a grinding module frame fixedly arranged on the control machine tool, characterized in that: The polishing module frame is rotatably provided with parallel pressure rollers, and one side of the polishing module frame is symmetrically provided with two sets of heat-resistant clamping belts, and the heat-resistant clamping belts are supported by the parallel pressure rollers so that the heat-resistant clamping belts form a plane parallel to the acrylic sheet; The planes parallel to the acrylic sheet formed by two sets of upper and lower symmetrical heat-resistant clamping bands are respectively blocked at the upper and lower sides of the acrylic sheet; The polishing module frame is provided with a flame spraying clamp and an arc polishing wheel, and the arc polishing wheel polishes the acrylic sheet by rotating to form an arc edge; the flame spraying clamp is fixedly installed with the polishing module frame, and the flame spraying clamp is located between two sets of heat-resistant clamps, and the polished arc edge is subjected to flame spraying treatment by the flame spraying clamp, and the heat-resistant clamp limits the flame at this time; The grinding module frame is fixedly provided with a transverse back plate, a right-angle side frame is fixedly provided on the transverse back plate, a slide rail is provided on the right-angle side frame, and a driving module is provided on the outer sliding sleeve of the slide rail; a tool back plate is detachably fixedly installed on the driving module, and a V-shaped pre-grinding knife is provided on the tool back plate, which can drive the V-shaped pre-grinding knife to pre-grind the edge of the acrylic sheet through the driving module, and after the V-shaped pre-grinding knife is pre-grinded, the acrylic sheet is polished by rotating the circular arc grinding wheel; a module spring is provided between the right-angle side frame and the driving module, and elastic pressure is applied to the driving module through the module spring, so that the driving module has an elastic tendency to move in the direction of the circular arc grinding wheel; a convex driving part is fixedly provided on the circular arc grinding wheel, and when the circular arc grinding wheel rotates, the driving module can be intermittently squeezed by the convex driving part, so that the driving module elastically compresses the module spring.

2. The arc edge grinding device for processing acrylic sheets according to claim 1, characterized in that: A powder blowing nozzle is arranged between the arc grinding wheel and the heat-resistant clamping belt, and the acrylic sheet is pre-cleaned by spraying airflow through the powder blowing nozzle. One end of the powder blowing nozzle is connected to an electromagnetic valve, and a high-pressure connecting pipe is connected to the electromagnetic valve. The connection between the high-pressure connecting pipe and the powder blowing nozzle is controlled by the electromagnetic valve.

3. An arc edge grinding device for processing acrylic sheets according to claim 1, characterized in that: An upper driving roller and a lower driving roller are rotatably arranged on the grinding module frame, and the upper driving roller is located above the lower driving roller. The upper driving roller and the lower driving roller respectively cooperate with the parallel pressure rollers to support the heat-resistant belt, and the upper driving roller and the lower driving roller respectively drive the corresponding heat-resistant belt to rotate.

4. The arc-edge grinding device for processing acrylic sheets according to claim 3, wherein: A reversing gear and a matching gear are rotatably arranged on the polishing module frame, the reversing gear and the matching gear are meshed with each other, and the reversing gear is coaxially and correspondingly connected to the upper driving roller for transmission.

5. The arc edge grinding device for processing acrylic sheets according to claim 4, characterized in that: A combined synchronous wheel is coaxially fixed on the mating gear, a single synchronous wheel is coaxially fixed on the lower driving roller, a synchronous belt is arranged between the combined synchronous wheel and the single synchronous wheel for synchronous transmission, and when the single synchronous wheel drives the lower driving roller to rotate, the upper driving roller can rotate in the opposite direction.

6. The arc edge grinding device for acrylic sheet processing according to claim 5, characterized in that: A servo motor is fixedly arranged on the polishing module frame, and the servo motor is used to drive the single synchronous wheel to rotate.

7. An arc edge grinding device for processing acrylic sheets according to claim 2, characterized in that: A partition clamping plate is arranged between the powder blowing nozzle and the heat-resistant entrainment, and the partition clamping plate is fixedly connected with the grinding module frame.

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