Arc edge grinding device for acrylic plate machining

Abstract

The invention relates to the technical field of grinding machine tools, in particular to an arc edge grinding device for acrylic plate machining, which comprises a control machine tool and a grinding module frame fixedly arranged on the control machine tool, parallel compression rollers are rotatably arranged on the grinding module frame, and two groups of heat-resistant clamping belts are symmetrically arranged on one side of the grinding module frame up and down. The heat-resistant clamping belts are supported through the parallel compression rollers, so that the heat-resistant clamping belts form a plane parallel to the acrylic plate; according to the arc edge grinding device for acrylic plate machining, through cooperation of the heat-resisting clamping belt, the flame spraying clamping strip, the arc grinding wheel and other structures, flame spraying treatment can be conducted on an arc edge formed through grinding of the arc grinding wheel, so that the arc edge of an acrylic material is smoother, and through the arrangement of the heat-resisting clamping belt, the arc edge is more smooth; and flames can be limited.

Description

Technical Field

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

[0002] Acrylic sheet, also known as specially treated organic glass, is a polymethyl methacrylate sheet formed by the polymerization of methyl methacrylate monomers. In the production and processing of acrylic sheet, according to the process requirements, it is often necessary to grind the edge of the acrylic sheet into an arc shape. The grinder in the prior art drives the arc grinding wheel to rotate at high speed to perform arc grinding on the edge of the acrylic sheet. However, the arc edge after grinding is usually not smooth enough and the processing quality is not high. If the flame spraying treatment is directly performed in the later stage to improve the smoothness of the arc edge after grinding, the flame generated by the flame spraying is easy to affect the planes on both sides of the acrylic sheet, especially when the planes on both sides of the acrylic sheet have frosted prints, the flame spraying will cause the frosted prints to disappear. Summary of the invention

[0003] The object of the present invention is to provide an arc edge grinding device for acrylic plate processing to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an arc edge grinding device for processing acrylic sheet, comprising a control machine tool and a grinding module frame fixedly arranged on the control machine tool, the grinding module frame is rotatably provided with parallel pressure rollers, one side of the grinding module frame is symmetrically provided with two groups of heat-resistant clamping belts, 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 jet clamp and an arc polishing wheel, and the arc polishing wheel polishes the acrylic sheet by rotating to form an arc edge; the flame jet clamp is fixedly installed on the polishing module frame, and the flame jet clamp is located between two sets of heat-resistant clamps, and the polished arc edge is subjected to flame spraying treatment by the flame jet clamp, and the heat-resistant clamp limits the flame at this time.

[0005] 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.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The arc edge grinding device for processing acrylic sheets of the present invention, through the cooperation of structures such as heat-resistant clamps, flame spraying strips, and arc grinding wheels, can perform flame spraying treatment on the arc edge formed by grinding with the arc grinding wheel, making the arc edge of the acrylic material smoother. And through the setting of the heat-resistant clamps, the flame can be restricted to avoid the influence of flame spraying on the two flat surfaces of the acrylic sheet. The heat-resistant clamps 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.

[0015] 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 and oscillate 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, thereby improving the grinding quality of the arc edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 is Figure 1 The enlarged schematic diagram of area A in

[0018] Figure 3 It is a schematic diagram of another angle of the overall structure of the present invention.

[0019] Figure 4 is Figure 3 The enlarged schematic diagram of area B in

[0020] Figure 5 It is a top view schematic diagram of the overall structure of the present invention.

[0021] Figure 6 is Figure 5 The enlarged schematic diagram of area C in

[0022] Figure 7 It is a schematic diagram of the structure of the grinding module frame of the present invention.

[0023] Figure 8 is Figure 7 The enlarged schematic diagram of area D in

[0024] Fig. 9 It is the front view of the structure of the grinding module frame of the present invention.

[0025] Fig.10 is Fig. 9 The enlarged schematic diagram of area E in

[0026] Fig.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.

[0027] 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

[0028] 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.

[0029] 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.

[0030] 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.

[0031] A powder blowing nozzle 7 is arranged between the arc grinding wheel 6 and the heat-resistant clamping belt 4. An air flow is ejected through the powder blowing nozzle 7 to pre-clean the acrylic sheet. One end of the powder blowing nozzle 7 is connected with an electromagnetic air valve 701, and a high-pressure connecting pipe 702 is connected to the electromagnetic air valve 701. The connection on-off between the high-pressure connecting pipe 702 and the powder blowing nozzle 7 is controlled by the electromagnetic air valve 701.

[0032] As Figure 8 As shown in the figure, a horizontal back plate 601 is fixedly arranged on the grinding module frame 2, a right-angle side frame 602 is fixedly arranged on the horizontal back plate 601, a slide rail rod 603 is arranged on the right-angle side frame 602, and a driving module 604 is slidably sleeved outside the slide rail rod 603. A tool back plate 605 is detachably and fixedly installed on the driving module 604, and a V-shaped pre-grinding tool 606 is arranged on the tool back plate 605. When the V-shaped pre-grinding tool 606 is worn, the tool back plate 605 and the V-shaped pre-grinding tool 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-grinding tool 606 is as Figure 8 As shown in the figure, it has a V-shaped slot and vertical groove lines are provided to increase the grinding performance. By axially reciprocating the driving module 604 along the length direction of the slide rail rod 603, the V-shaped pre-grinding tool 606 can be driven to pre-grind the edge of the acrylic sheet. After pre-grinding by the V-shaped pre-grinding tool 606, the acrylic sheet is then ground by the rotation of the arc grinding wheel 6.

[0033] A module spring 607 is arranged between the right-angle side frame 602 and the driving module 604. An elastic pressure is applied to the driving module 604 through the module spring 607, so that the driving module 604 has an elastic tendency to move towards the direction where the arc grinding wheel 6 is located; a convex driving part 608 is fixedly arranged on the arc grinding wheel 6. When the arc grinding wheel 6 rotates, the driving module 604 can be intermittently extruded through the convex driving part 608, so that the driving module 604 elastically compresses the module spring 607. By using the rotation of the arc grinding wheel 6 to drive the above structure, while realizing synchronous control, the use of motors is reduced and the manufacturing cost is lower.

[0034] An upper driving roller 201 and a lower driving roller 202 are rotatably arranged on the grinding module frame 2. The upper driving roller 201 is above the lower driving roller 202. The upper driving roller 201 and the lower driving roller 202 are respectively and independently matched with the parallel roller 3 to support the heat-resistant clamping belt 4, and the heat-resistant clamping belt 4 corresponding to each of them is driven to rotate by the upper driving roller 201 and the lower driving roller 202 respectively.

[0035] 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.

[0036] 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.

[0037] 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 .

[0038] 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.

[0039] 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 arc grinding wheel 6 are thrown in a direction away from the powder blowing nozzle 7.

[0040] 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.

[0041] The above specific principle process is as follows Fig.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 .

[0042] 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 clamping belts 4, so that the arc edge of the acrylic sheet is located between the planes of the upper and lower groups of heat-resistant clamping belts 4. As Fig.10 shown in, when the flame spraying strip 5 sprays flame, the flame smooths the arc edge of the acrylic sheet. At the same time, the heat-resistant clamping belt 4 blocks and limits the flame to prevent the flame from covering the upper and lower flat surfaces of the acrylic sheet.

[0043] The servo motor 208 drives the single-body synchronous pulley 206 and the lower driving roller 202 to rotate. 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 clamping belts 4 to rotate, so that the heat-resistant clamping belts 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 clamping belt 4 is longer and has sufficient heat dissipation time. Thus, when the heat-resistant clamping belt 4 contacts the flame, the same part contacts the flame briefly. When the heat-resistant clamping belt 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 clamping belt 4 to assist in cooling the heat-resistant clamping belt 4 to reduce the perimeter of the heat-resistant clamping belt 4, which is not shown in this application.

[0044] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles 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 acrylic plate processing, 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 jet clamp and an arc polishing wheel, and the arc polishing wheel polishes the acrylic sheet by rotating to form an arc edge; the flame jet clamp is fixedly installed on the polishing module frame, and the flame jet clamp is located between two sets of heat-resistant clamps, and the polished arc edge is subjected to flame spraying treatment by the flame jet clamp, and the heat-resistant clamp limits the flame at this time.

2. The arc edge grinding device for acrylic sheet processing 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. The arc edge grinding device for acrylic sheet processing according to claim 1, characterized in that: 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.

4. The arc edge grinding device for acrylic sheet processing according to claim 3, characterized in that: 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.

5. The arc edge grinding device for acrylic sheet processing according to claim 4, characterized in that: 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.

6. The arc edge grinding device for acrylic sheet processing 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.

7. The arc edge grinding device for acrylic sheet processing according to claim 6, characterized in that: 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.

8. The arc edge grinding device for acrylic sheet processing according to claim 7, 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.

9. The arc edge grinding device for acrylic sheet processing according to claim 8, 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.

10. The arc edge grinding device for acrylic sheet processing according to claim 2, characterized in that: 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.

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