Die cleaning assembly of hot bending machine

Abstract

The utility model provides a mold cleaning assembly of a hot bending machine, which comprises a lower mold cleaning and positioning assembly, an upper mold cleaning assembly and a bidirectional driving device, and the lower mold cleaning and positioning assembly and the upper mold cleaning assembly are sequentially arranged along the length direction of the lower mold cleaning and positioning assembly and the upper mold cleaning assembly; the bidirectional driving device is arranged between the lower die cleaning and positioning assembly and the upper die cleaning assembly; the lower die cleaning and positioning assembly comprises a first strip brush with bristles; the upper mold cleaning assembly comprises a second strip brush with bristles; the bidirectional driving device is provided with a first push-pull rod and a second push-pull rod, and the first push-pull rod drives the first strip brush to do reciprocating motion; according to the structure, the lower die cleaning and positioning assembly and the upper die cleaning assembly can be driven at the same time through the bidirectional driving device, one driving device is omitted, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hot bending machine technology, specifically to a mold cleaning component for a hot bending machine. Background Technology

[0002] With the widespread use of smartphones, the demand for glass is increasing. Previously, hot bending machines used for processing glass required manual loading and unloading, resulting in low production efficiency. To improve production efficiency, automated robotic arms were invented for loading and unloading. However, these robotic arms could only perform simple material handling. Although efficiency was improved, they were prone to defects in the workpieces to be processed, resulting in a high scrap rate. Therefore, fully automatic hot bending machine loading and unloading equipment was invented to solve these problems.

[0003] When glass is formed, pressure needs to be applied simultaneously through the upper and lower molds. Therefore, the upper and lower molds need to be opened when the fully automatic hot bending machine is working. In addition, since glass requires high temperature during forming, high temperature resistant graphite molds are usually used to process glass. However, graphite molds are prone to generating dust. Therefore, the molds need to be cleaned during automatic loading and unloading to prevent dust from damaging the glass surface.

[0004] The applicant disclosed a mold cleaning assembly for a hot bending machine in patent application number 202222537586.8, with an authorization announcement date of January 24, 2023. The assembly includes a lower mold cleaning and positioning assembly and an upper mold cleaning assembly arranged side-by-side. The lower mold cleaning and positioning assembly includes a cleaning frame, a first sliding device on the cleaning frame, a first brush on the first sliding device, and a first driving device for driving the first brush on the cleaning frame. The upper mold cleaning and positioning assembly includes a cleaning cover mounted on a mold transfer base plate, and a first driving device for driving the first brush is located inside the cleaning cover. The two sliding devices include a second brush with bristles, and a second drive device on the cleaning hood that drives the second brush to reciprocate. This structure allows the mold positioning and flipping plate to rotate at any angle. When the lower mold cavity is completely facing downwards, activating the first brush allows all the brushed dust and other debris to fall off, resulting in optimal cleaning. A dust collection hopper collects fallen debris, preventing environmental pollution. Especially when a negative pressure is applied to the outlet of the dust collection hopper, it generates suction to collect dust and other debris, further improving the collection effect.

[0005] In the above scheme, the lower mold cleaning and positioning component and the upper mold cleaning component are arranged side by side; the first brush is driven by the first drive device and the second brush is driven by the second drive device. This side-by-side arrangement can adapt to some applications. However, this arrangement requires the mold to be rotated 90 degrees after exiting the hot bending machine before it can be grabbed for cleaning, which requires an additional rotating device. Alternatively, as in the above scheme, the automatic loading and unloading equipment can be placed on the front side of the hot bending machine, which requires more space. In addition, since the first and second brushes perform the same movement, driving them with separate drive devices would waste resources and increase production costs. Summary of the Invention

[0006] The present invention aims to address the technical problems that the existing technology, which uses a side-by-side arrangement of the lower mold cleaning positioning component and the upper mold cleaning component, cannot meet the needs of more application scenarios; and that the use of multiple driving devices results in high production costs.

[0007] To solve the above-mentioned technical problems, this utility model provides a mold cleaning assembly for a hot bending machine, including a lower mold cleaning and positioning assembly, an upper mold cleaning assembly, and a bidirectional drive device, characterized in that: the lower mold cleaning and positioning assembly and the upper mold cleaning assembly are arranged sequentially along their own length direction; the bidirectional drive device is located between the lower mold cleaning and positioning assembly and the upper mold cleaning assembly;

[0008] The lower mold cleaning and positioning assembly includes a cleaning frame, which includes a front side plate and a rear side plate arranged opposite to each other along the length direction of the lower mold cleaning and positioning assembly. A first sliding device is provided between the front side plate and the rear side plate, and a first brush with bristles is slidably provided on the first sliding device.

[0009] The upper mold cleaning assembly includes a cleaning cover, and a second sliding device is provided inside the cleaning cover along the length direction of the upper mold cleaning assembly. A second brush with bristles is slidably provided on the second sliding device. The bidirectional driving device has a first push-pull rod and a second push-pull rod. The first push-pull rod drives the first brush to reciprocate. The second push-pull rod drives the second brush to reciprocate.

[0010] In the above structure, the lower mold cleaning and positioning component and the upper mold cleaning component are arranged sequentially along their own length direction. This arrangement can adapt to hot bending machines where the mold is transported along its own length direction or the mold opening layout is arranged, which is a supplement to the existing technology. In addition, the lower mold cleaning and positioning component and the upper mold cleaning component can be driven simultaneously by a bidirectional drive device, saving a drive device and reducing costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0012] Figure 2This is a structural schematic diagram from another perspective of an embodiment of the present utility model;

[0013] Figure 3 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0014] Figure 4 This is a schematic diagram of the internal structure of the lower mold cleaning and positioning component in an embodiment of this utility model. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] like Figures 1 to 4 As shown, a mold cleaning assembly for a hot bending machine includes a lower mold cleaning and positioning assembly 3, an upper mold cleaning assembly 4, and a bidirectional drive device. The lower mold cleaning and positioning assembly 3 and the upper mold cleaning assembly 4 are arranged sequentially along their own length direction, and the bidirectional drive device is located between the lower mold cleaning and positioning assembly 3 and the upper mold cleaning assembly 4.

[0017] like Figure 1 and Figure 3 As shown, the lower mold cleaning and positioning assembly 3 includes a cleaning frame 31. The cleaning frame 31 includes a front side plate 311 and a rear side plate 312 arranged opposite to each other along the length direction of the lower mold cleaning and positioning assembly 3. A first sliding device is provided between the front side plate 311 and the rear side plate 312. In this embodiment, the first sliding device includes four first side plate pull rods 321 provided between the front side plate 311 and the rear side plate 312. Two of the first side plate pull rods 321 are provided on the upper part of the cleaning frame 31, and the other two are provided on the lower part of the cleaning frame 31. A first linear bearing 322 is provided on the first side plate pull rods 321 on the upper part of the cleaning frame 31. A first brush fixing plate 323 is provided on the first linear bearing 322. A first brush 324 is provided on the first brush fixing plate 323.

[0018] like Figure 2 As shown, the upper mold cleaning assembly 4 includes a cleaning cover 40, and a second sliding device is provided inside the cleaning cover 40. In this embodiment, the second sliding device includes two second side plate pull rods 421 provided inside the cleaning cover 40, a second linear bearing 422 is provided on the second side plate pull rods 421, a second brush fixing plate 423 is provided on the second linear bearing 422, and a second brush 424 is provided on the second brush fixing plate 423.

[0019] The bidirectional drive device has a first push-pull rod and a second push-pull rod. In this embodiment, the bidirectional drive device is a double-outlet cylinder 5, which has a first piston rod (not shown) and a second piston rod 52. The first piston rod is connected to the first brush fixing plate 323, and the second piston rod 52 is connected to the second brush fixing plate 423. When the double-outlet cylinder 5 is running, the first piston rod drives the first brush 324 to reciprocate, while the second piston rod 52 drives the second brush 424 to reciprocate. In this way, the double-outlet cylinder 5 can simultaneously drive the first brush fixing plate 323 and the second brush fixing plate 423 to reciprocate. Compared with the prior art, this saves one drive device and reduces costs.

[0020] A mold positioning flip plate 33 is rotatably provided between the front side plate 311 and the rear side plate 312, and a flipping drive device for driving the mold positioning flip plate 33 to rotate is provided on the cleaning rack 31.

[0021] like Figure 4 As shown, in this embodiment, a short flipping chuck 331 is provided at one end of the mold positioning flipping plate 33, and a long flipping chuck 332 is provided at the other end of the mold positioning flipping plate 33. The short flipping chuck 331 is connected to the rear side plate 312 through a bearing, and the long flipping chuck 332 is connected to the front side plate 311 through a bearing. The bearing is pressed by a bearing clamping block.

[0022] like Figure 3 As shown, the flipping drive device includes a driven synchronous pulley 341 mounted on the long flipping chuck 332, a rotary cylinder 340 mounted on the front side plate 311, a driving synchronous pulley 342 mounted on the output shaft of the rotary cylinder 340, and a synchronous belt 343 positioned between the driving synchronous pulley 342 and the driven synchronous pulley 341. Activating the flipping drive device can drive the mold positioning flipping plate 33 to rotate.

[0023] like Figure 1 As shown, a left sealing cover 313 and a right sealing cover 314 are provided between the front side plate 311 and the rear side plate 312. Both the left sealing cover 313 and the right sealing cover 314 are provided with a clearance notch 3100 to avoid the mold positioning flip plate 33.

[0024] like Figure 1 and Figure 2 As shown, in this embodiment, the mold positioning flip plate 33 is rectangular in shape, and two long side fixing limit blocks 333 are fixedly provided along one long side of the mold positioning flip plate 33. A limiting groove 3330 is provided on the mold positioning flip plate 33 to prevent the long side fixing limit block 333 from rotating when it is tightened. An oblong hole is provided on the long side fixing limit block 333, and the position of the long side fixing limit block 333 in the width direction of the mold positioning flip plate 33 can be adjusted through the oblong hole.

[0025] A short-side fixing limit block 334 is fixedly provided along one short side of the mold positioning flip plate 33; a long positioning clamping device is provided on the side opposite to the long-side fixing limit block 333, and a short positioning clamping device is provided on the side opposite to the short-side fixing limit block 334.

[0026] like Figure 3 As shown, the long positioning clamping device includes a long positioning clamping cylinder 350 located on the bottom surface of the mold positioning flip plate 33. A long positioning clamping block 351 is provided on the push rod of the long positioning clamping cylinder 350. The long positioning clamping block 351 has an upwardly extending boss 3510. A boss avoidance hole 3500 is provided on the mold positioning flip plate 33. The boss 3510 passes through the boss avoidance hole 3500.

[0027] The short positioning clamping device includes a short positioning clamping cylinder 360 located on the bottom surface of the mold positioning flip plate 33, a short positioning clamping block 361 on the push rod of the short positioning clamping cylinder 360, and a short positioning clamping block clearance hole 3600 on the mold positioning flip plate 33, through which the short positioning clamping block 361 passes.

[0028] This structure, by setting fixed long-side fixed limit blocks 333 and short-side fixed limit blocks 334, and setting movable long positioning clamping blocks 351 and short positioning clamping blocks 361, can achieve precise positioning of the mold and clamping or releasing of the mold by starting or stopping the long positioning clamping cylinder 350 and the short positioning clamping cylinder 360.

[0029] like Figure 3 and Figure 4 As shown, a blowing assembly 37 is provided on the top of both the front side plate 331 and the rear side plate 332. The blowing assembly 37 includes a blowing bracket 371, a blowing block translation cylinder 372 mounted on the blowing bracket 371, and a blowing block 373 mounted on the push block of the blowing block translation cylinder 372. The blowing block 373 has a flat air nozzle with an air outlet. The blowing assembly is used to blow away the workpiece during mold opening to prevent it from adhering to the upper mold.

[0030] When the mold is transported to the mold positioning flip plate 33, the long positioning clamping cylinder 350 and the short positioning clamping cylinder 360 are activated respectively to clamp the mold through the long positioning clamping block 351 and the short positioning clamping block 361. The mold opening device of the automatic loading and unloading device grabs the upper mold and moves the upper mold to the top of the upper mold cleaning component 4. The part picking device of the automatic loading and unloading device removes the workpiece in the lower mold. Then, the rotary cylinder 340 drives the mold positioning flip plate 33 to rotate 180 degrees. Since the cavity of the upper mold is facing down, it is not necessary to flip the upper mold. The double rod cylinder 5 is activated and simultaneously drives the first brush 324 and the second brush 424 to reciprocate to remove foreign objects on the upper and lower molds. After cleaning, the rotary cylinder 340 drives the mold positioning flip plate 33 to return to its original position.

[0031] like Figure 2 and Figure 3 As shown, a first dust collection hopper 38 is provided at the bottom of the cleaning rack 31, and a filter screen 381 is provided inside the first dust collection hopper 38; a second dust collection hopper 48 is provided at the bottom of the cleaning cover 40, and the first dust collection hopper 38 and the second dust collection hopper 48 are connected to a negative pressure system to further improve the collection effect of foreign objects.

Claims

1. A die cleaning assembly of a hot bending machine, comprising a lower die cleaning positioning assembly (3), an upper die cleaning assembly (4) and a bidirectional drive device, characterized in that: The lower mold cleaning positioning assembly (3) and the upper mold cleaning assembly (4) are arranged in sequence along the length direction of the lower mold cleaning positioning assembly (3) and the upper mold cleaning assembly (4) respectively; the bidirectional driving device is arranged between the lower mold cleaning positioning assembly (3) and the upper mold cleaning assembly (4); The lower mold cleaning positioning assembly (3) comprises a cleaning frame (31), the cleaning frame (31) comprises a front side plate (311) and a rear side plate (312) arranged oppositely along the length direction of the lower mold cleaning positioning assembly (3), a first sliding device is arranged between the front side plate (311) and the rear side plate (312), and a first brush (324) with bristles is slidably arranged on the first sliding device; The upper mold cleaning assembly (4) comprises a cleaning cover (40), a second sliding device is arranged in the cleaning cover (40) along the length direction of the upper mold cleaning assembly (4), and a second brush (424) with bristles is slidably arranged on the second sliding device; The bidirectional driving device comprises a first push-pull rod and a second push-pull rod, the first push-pull rod drives the first brush (324) to perform reciprocating motion, and the second push-pull rod drives the second brush (424) to perform reciprocating motion.

2. The mold cleaning assembly of a hot bender according to claim 1, characterized in that: The bidirectional driving device is a double-outlet-rod air cylinder (5), and the double-outlet-rod air cylinder (5) comprises first and second piston rods (52).

3. The mold cleaning assembly of a hot bender of claim 1, wherein: A mold positioning and overturning plate (33) is rotatably arranged between the front side plate (311) and the rear side plate (312), an overturning driving device that drives the mold positioning and overturning plate (33) to rotate is arranged on the cleaning frame (31), a first dust receiving hopper (38) is arranged at the bottom of the cleaning frame (31), and a second dust receiving hopper (48) is arranged at the bottom of the cleaning cover (40).

4. The mold cleaning assembly of a hot bender of claim 3, wherein: Left and right closing covers (313) and (314) are arranged between the front side plate (311) and the rear side plate (312), and a position-avoiding gap (3100) for avoiding the mold positioning and overturning plate (33) is formed in each of the left and right closing covers (313) and (314).

5. The mold cleaning assembly of a heated bender of claim 1, wherein: The first sliding device comprises two or more first side plate pull rods (321) arranged between the front side plate (311) and the rear side plate (312), a first linear bearing (322) is arranged on each first side plate pull rod (321), a first brush fixing plate (323) is arranged on the first linear bearing (322), and the first brush (324) is fixed to the first brush fixing plate (323).

6. The mold cleaning assembly of a heated bender of claim 1, wherein: A short overturning chuck (331) is arranged at one end of the mold positioning and overturning plate (33), a long overturning chuck (332) is arranged at the other end of the mold positioning and overturning plate (33), the short overturning chuck (331) and the long overturning chuck (332) are connected to the cleaning frame (31) through bearings, and the bearings are fixed to the cleaning frame (31) through bearing pressing blocks.

7. The mold cleaning assembly of a heated bender of claim 1, wherein: The overturning driving device comprises a driven synchronous wheel (341) arranged on the long overturning chuck (332), a rotary air cylinder (340) is arranged on the cleaning frame (31), a driving synchronous wheel (342) is arranged on the output shaft of the rotary air cylinder (340), and a synchronous belt (343) is arranged between the driving synchronous wheel (342) and the driven synchronous wheel (341).

8. The mold cleaning assembly of a heated bender of claim 3, wherein: The mold positioning turnover plate (33) is in a rectangular shape, a long edge fixed limiting block (333) is fixedly arranged along one long edge of the mold positioning turnover plate (33); a short edge fixed limiting block (334) is fixedly arranged along one short edge of the mold positioning turnover plate (33); a long positioning clamping device is arranged on the side opposite to the long edge fixed limiting block (333), and a short positioning clamping device is arranged on the side opposite to the short edge fixed limiting block (334).

9. The mold cleaning assembly of a heated bender of claim 8, wherein: The long positioning clamping device comprises a long positioning clamping cylinder (350) arranged on the bottom surface of the mold positioning turnover plate (33), a long positioning clamping block (351) is arranged on the push rod of the long positioning clamping cylinder (350), the long positioning clamping block (351) has a boss extending upward, a boss avoiding hole (3500) is arranged on the mold positioning turnover plate (33), and the boss passes through the boss avoiding hole (3500); the short positioning clamping device comprises a short positioning clamping cylinder (360) arranged on the bottom surface of the mold positioning turnover plate (33), a short positioning clamping block (361) is arranged on the push rod of the short positioning clamping cylinder (360), a short positioning clamping block avoiding hole (3600) is arranged on the mold positioning turnover plate (33), and the short positioning clamping block (361) passes through the short positioning clamping block avoiding hole (3600).

10. The mold cleaning assembly of a heated bender of claim 1, wherein: A blowing assembly (37) is arranged on the top of each of the front side plate (311) and the rear side plate (312), the blowing assembly (37) comprises a blowing support (371), a blowing block translation cylinder (372) is arranged on the blowing support (371), a blowing block (373) is arranged on the push block of the blowing block translation cylinder (372), the blowing block (373) has a flat air nozzle, and a gas outlet hole is formed in the air nozzle.

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