Multi-purpose cutting machine for the production of plastic sheets

Abstract

The present invention belongs to the technical field of plastic sheet production equipment and proposes a multi-purpose cutting device for producing plastic sheets, comprising a saw blade, a shearing machine, and a vertical frame. The vertical frame is provided with a first adjustment device and a second adjustment device for adjusting the working depth of the saw blade and the shearing machine, respectively. The first adjustment device includes a first box-type mounting frame, a handle, and a quick-release saw blade assembly. The vertical frame is provided with a plurality of vertically spaced saw blade positioning holes on a side facing the saw blade. The second adjustment device includes a second box-type mounting frame, a vertical adjustment assembly, and a shearing knife. The vertical frame is provided with a plurality of shear positioning holes on a side facing the shearing machine. A pair of vertical feed rollers are provided at both ends of the frame, and a friction traction device is provided between the saw blade and the shearing machine. The device has a reasonable design, a simple structure, a strong cutting capacity, a high comprehensive utilization rate, and is conducive to increasing workshop output, making it suitable for large-scale promotion.

Description

Technical Field

[0001] The present invention belongs to the technical field of plastic plate production equipment, and in particular relates to a multi-purpose cutting device for producing plastic plates. Background Art

[0002] The plastic extruder heats and plasticizes powdered or granular raw materials until they are molten. The molten resin is then molded into a sheet. The hot plate is then pressed into a smooth surface by a three-roll calender. After cooling, it is cut into sheets that meet the required dimensions. Using cutting equipment to cut plastic sheets can greatly improve production efficiency. Depending on the thickness of the plastic sheet, a shearing machine is used for thin sheets, while an electric saw with a band saw blade is used for thicker sheets.

[0003] Currently, shearing machines are used to cut thin plates. They have a short cutting time and high efficiency. Electric saws are used to cut thick plates. Although electric saws take longer to cut than shears, they have higher cutting stability and are less prone to chipping. However, shearing machines and electric saws are two relatively independent devices, and when cutting thick plates, saw blades with different cutting depths need to be replaced. As a result, the overall floor space occupied by different types of cutting equipment in the workshop is very large. When order requirements are uneven, the utilization rate of some cutting equipment cannot be fully utilized, which affects the production volume of the workshop. Furthermore, most cutting equipment is horizontal machine tools, which are not convenient for quickly turning plates and adjusting the cutting depth. Therefore, their comprehensive utilization rate needs to be improved. Summary of the Invention

[0004] In response to the technical problems existing in the cutting equipment used for cutting thin plates and back plates mentioned above, the present invention proposes a multi-purpose cutting equipment for producing plastic plates with reasonable design, strong cutting ability, high comprehensive utilization rate and conducive to improving workshop output.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is that the multi-purpose cutting equipment for producing plastic plates provided by the present invention includes a saw blade machine and a shearing machine, and the saw blade machine and the shearing machine are arranged on a vertical frame and are distributed close to the two ends of the vertical frame respectively. The vertical frame is provided with a first adjustment device and a second adjustment device for adjusting the working depth of the saw blade machine and the working depth of the shearing machine respectively. The first adjustment device includes a hollow first box-type mounting frame, a pair of handles are provided on the front of the first box-type mounting frame, and the inner bottom of the first box-type mounting frame is used to install the saw blade machine, the main shaft of the saw blade machine is facing upward and is provided with a quick-release saw blade assembly, and the vertical frame is provided with a plurality of vertical spaces on the side facing the saw blade machine. The saw blade positioning long holes are distributed at intervals, and the second adjustment device includes a hollow second box-type mounting frame, and the front of the second box-type mounting frame is provided with a vertical adjustment component, and the vertical adjustment component is used to install a shearing machine. The main shaft of the shearing machine is provided with a shearing knife and is horizontally facing the inner side of the vertical frame. The side of the second box-type mounting frame is provided with a plurality of vertically spaced mounting holes, and the mounting holes are used to horizontally slide with the shearing knife. The vertical frame is provided with a plurality of shear positioning long holes on its side facing the shearing machine, and a pair of vertical feeding rollers are provided at both ends of the vertical frame. The feeding rollers are used to frictionally convey plastic sheets, and a friction traction device that cooperates with the feeding rollers is provided between the saw blade machine and the shearing machine.

[0006] Preferably, the quick-release saw blade assembly includes an output shaft, the side of the output shaft is provided with a keyway distributed along its length, the output shaft is provided with a saw blade connected to its key, the top and bottom of the saw blade are provided with positioning screw sleeves, the top of the output shaft is provided with a support shaft passing through the top of the first box-type mounting bracket, and the support shaft is connected to the output shaft through a nested part.

[0007] Preferably, the vertical adjustment assembly includes a pair of vertical slide rails, the slide rails are provided with a slide plate that slides with them, the shearing machine is installed on the slide plate, a pair of screw rods are provided on both sides of the slide plate, and a hand wheel is provided at the bottom of the screw rod.

[0008] Preferably, the friction traction device includes a pair of lower movable plates and a pair of upper movable plates, the lower movable plates are connected by multiple adjusting screws, and the upper movable plates are connected by multiple guide rods, and a row of front rollers and a row of back rollers distributed on the front and back sides of the plastic sheet are arranged between the lower movable plates and the upper movable plates.

[0009] Preferably, a top plate located at the top of the vertical frame is provided between the upper movable plates, the top plate is an inverted E-shaped structure, and a connecting portion folded and extended toward the inner side of the top plate is provided on the top of the upper movable plate, a spring is provided between the connecting portion and the side wall of the top plate, and the spring is sleeved on the guide rod.

[0010] Preferably, the second box-type mounting frame is embedded between the upper movable plate and the lower movable plate on the side close to the friction traction device, the number of the back rollers is greater than the number of the front rollers and a plurality of annular grooves are provided on the side thereof, and the annular grooves are used to cooperate with the shearing knife.

[0011] Preferably, a support plate is provided on the inner side of the vertical frame, the longitudinal section of the support plate is in a horizontal T-shape and is inserted into the saw blade positioning slot.

[0012] Preferably, the top and bottom of the feeding roller are provided with mounting seats, the mounting seats are provided with waist-shaped holes, the waist-shaped holes are movably matched with the rotation center of the feeding roller, and the top and bottom of the feeding roller are provided with positioning nuts.

[0013] Preferably, two mounting slots corresponding to the first adjusting device and the second adjusting device are provided in the middle of the bottom of the vertical frame, and a plurality of inclined scrapers are provided in the mounting slots.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. The multi-purpose cutting equipment for producing plastic plates provided by the present invention has both sides of the vertical frame that can be used as the feeding end and the discharging end. If the thick plate is fed in from the side close to the saw blade, the saw blade will cut the plastic plate in motion, while if the thin plate is fed in from the side close to the shearing machine, the shearing machine will cut the plastic plate. Moreover, the cutting depths of the saw blade and the shearing machine can be adjusted, which not only meets the workshop's needs for cutting plates of different thicknesses, but also achieves the purpose of saving workshop space and reducing equipment costs.

[0016] 2. The multi-purpose cutting equipment for producing plastic sheets provided by the present invention utilizes a vertical frame to simultaneously install a saw blade machine, a friction traction device and a shearing machine, which can effectively save the floor space of the equipment and facilitate maintenance and blade replacement of the saw blade machine and the shearing machine.

[0017] The device has reasonable design, simple structure, strong cutting ability, high comprehensive utilization rate and is conducive to improving workshop output, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1Axonometric drawing of a multi-purpose cutting machine for producing plastic sheets;

[0020] Figure 2 An axonometric view of the multi-purpose cutting device for producing plastic sheets provided in an embodiment in another direction;

[0021] Figure 3 A front view of a multi-purpose cutting device for producing plastic sheets provided in an embodiment;

[0022] Figure 4 A side view of a multi-purpose cutting device for producing plastic sheets provided in an embodiment;

[0023] Figure 5 A cross-sectional view of a multi-purpose cutting device for producing plastic sheets provided in an embodiment, taken along the GG axis;

[0024] Figure 6 A cross-sectional view of the multi-purpose cutting device for producing plastic sheets provided in an embodiment in another direction;

[0025] Figure 7 An axonometric view of a friction traction device provided for an embodiment;

[0026] Figure 8 A side view of a friction traction device provided for an embodiment;

[0027] In the above figures, 1, plastic sheet; 2, saw blade machine; 3, shearing machine; 4, vertical frame; 41, saw blade positioning slot; 42, shear knife positioning slot; 5, first adjustment device; 51, first box-type mounting bracket; 52, quick-release saw blade assembly; 521, output shaft; 522, keyway; 523, saw blade; 524, positioning screw sleeve; 525, support shaft; 526, nesting piece; 53, handle; 6, second adjustment device; 61, second box-type mounting bracket Mounting rack; 62. Vertical adjustment assembly; 621. Slide rail; 622. Slide plate; 623. Screw rod; 624. Hand wheel; 63. Shear knife; 64. Mounting hole; 7. Feed roller; 8. Friction traction device; 81. Lower movable plate; 82. Upper movable plate; 83. Adjusting screw; 84. Guide rod; 85. Front roller; 86. Back roller; 87. Annular groove; 88. Top plate; 9. Support plate; 10. Mounting seat; 101. Waist-shaped hole; 11. Scraper. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other unless they conflict. For the convenience of description, the words "upper", "lower", "left", and "right" appearing below only indicate the upper, lower, left, and right directions consistent with the drawings themselves and do not limit the structure.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Examples, such as Figures 1 to 8 As shown, the multi-purpose cutting equipment for producing plastic sheets provided by the present invention includes a saw blade machine 2 and a shearing machine 3, which are arranged on a vertical frame 4 and are respectively distributed near the two ends of the vertical frame 4, and the vertical frame 4 is provided with a first adjustment device 5 and a second adjustment device 6 for adjusting the working depth of the saw blade machine 2 and the working depth of the shearing machine 3, respectively. The first adjustment device 5 includes a hollow first box-type mounting frame 51, and a pair of handles 53 are provided on the front of the first box-type mounting frame 51. The inner bottom of the first box-type mounting frame 51 is used to install the saw blade machine 2, and the main shaft of the saw blade machine 2 is upward and is provided with a quick-release saw blade assembly 52. ​​The vertical frame 4 is provided with a plurality of vertically spaced saw blade positioning long holes on its side facing the saw blade machine 2 41. The second adjustment device 6 includes a hollow second box-type mounting frame 61. The front of the second box-type mounting frame 61 is provided with a vertical adjustment assembly 62. The vertical adjustment assembly 62 is used to install the shearing machine 3. The main shaft of the shearing machine 3 is provided with a shearing knife 63 and is horizontally facing the inner side of the vertical frame 4. The side of the second box-type mounting frame 61 is provided with a plurality of vertically spaced mounting holes 64. The mounting holes 64 are used to horizontally slide with the shearing knife 63. The vertical frame 4 is provided with a plurality of shearing plate positioning slots 42 on its side facing the shearing machine 3. A pair of vertical feed rollers 7 are provided at each end of the vertical frame. The feed rollers 7 are used to frictionally convey the plastic sheet material 1. A friction traction device 8 that cooperates with the feed rollers 7 is provided between the saw blade 2 and the shearing machine 3. The actual cutting depth of the saw blade 2 and the shearing machine 3 can be changed by pulling the first box-type mounting frame 51 and the second box-type mounting frame 61.

[0031] Specifically, both sides of the vertical frame 4 can serve as the feeding end and the discharging end. For example, if a thick plate is fed in from the side close to the saw blade 2, the saw blade 2 will cut the plastic plate 1 in motion, and the cut plastic plate 1 will be output from the other side of the vertical frame 4 under the transmission of the friction traction device 8; if a thin plate is fed in from the side close to the shearing machine 3, the plastic plate 1 will be sent to the shearing station for a short pause, and during the pause, the shearing machine 3 will perform the shearing operation on the plastic plate 1 by punching, and the cut thin plate will be output from the other side of the vertical frame 4. In this way, the device integrates the cutting functions of two sets of equipment, which can meet the requirements of effectively conveying the plastic plate 1 while effectively completing the cutting of thin and thick plates. Moreover, the cutting depth and actual cutting height of the saw blade 2 and the shearing machine 3 can be adjusted, which not only meets the workshop's needs for cutting plates of different thicknesses, but also saves workshop space and reduces equipment costs. Furthermore, the vertical frame 4 itself adopts a vertical structure, and the workstations provided to the saw blade machine 2 and the shearing machine 3 shorten the distance between the workers and the main shaft, which can facilitate manual maintenance and tool changing.

[0032] In order to improve the utilization rate of the present device, the quick-release saw blade assembly 52 provided by the present invention includes an output shaft 521, and the side of the output shaft 521 is provided with a keyway 522 distributed along its length direction, and a saw blade 523 connected to its key is provided on the output shaft 521, and the top and bottom of the saw blade 523 are provided with positioning screw sleeves 524, and the top of the output shaft 521 is provided with a support shaft 525 that passes through the top of the first box-type mounting frame 51, and the support shaft 525 and the output shaft 521 are connected by a nested piece 526, and the nested piece 526 can ensure the coaxiality of the support shaft 525 and the output shaft 521, and the connection node between the support shaft 525 and the first box-type mounting frame 51 can be installed with a bearing to improve the working stability of the entire quick-release saw blade assembly 52. The cam 524 is engaged with the saw blade 523 and the cam 526 is engaged with the saw blade 523.

[0033] To improve the utilization of the vertical adjustment assembly 62, the present invention provides a vertical adjustment assembly 62 comprising a pair of vertical rails 621, a slide plate 622 slidably engaged therewith disposed on the rails 621, and the shearing machine 3 mounted on the slide plate 622. A pair of lead screws 623 are disposed on either side of the slide plate 622, and a hand wheel 624 is disposed at the bottom of the lead screws 623. By rotating the hand wheel 624, the lead screws and the slide plate 622 are relatively displaced, and the actual height of the slide plate 622 and the shearing machine 3 can be adjusted to meet the processing requirements of the corresponding width of the plastic sheet 1.

[0034] To improve the conveying stability of different plastic sheets 1, the friction gap of the friction traction device 8 provided by the present invention can be flexibly adjusted. Specifically, the friction traction device 8 includes a pair of lower movable plates 81 and a pair of upper movable plates 82. The lower movable plates 81 are connected by multiple adjustment screws 83, and the upper movable plates 82 are connected by multiple guide rods 84. A row of front rollers 85 and a row of back rollers 86 are disposed between the lower movable plates 81 and the upper movable plates 82, distributed on the front and back sides of the plastic sheet 1. By rotating the adjustment screws 83, the spacing between the lower movable plates 81 can be changed, thereby changing the conveying gap between the front rollers 85 and the back rollers 86 to accommodate the conveying requirements of plastic sheets 1 of different thicknesses. Since the tops of the front rollers 85 and the back rollers 86 are both connected to the upper movable plate 82, the adjustment of the adjustment screws 83 can also adjust the upper movable plate 82. The upper movable plate 82 can effectively complete translation under the guidance of the guide rods 84, which helps reduce the resistance and difficulty of manual adjustment.

[0035] To ensure the efficient conveying of the plastic sheet 1 by the friction traction device 8, the present invention provides a top plate 88 located at the top of the vertical frame 4 between the upper movable plates 82. The top plate 88 has an inverted E-shaped structure. A connecting portion folds and extends inwardly toward the top plate 88 at the top of the upper movable plates 82. A spring is provided between the connecting portion and the sidewall of the top plate 88, and the spring is sleeved onto the guide rod 84. In this way, the spring balances the relative position of the top plate 88 and the upper movable plates 82, which helps ensure that the front roller 85 and the back roller 86 exert a reasonable frictional pressure on the plastic sheet 1 during actual conveying, thereby meeting conveying requirements and ensuring cutting quality. The sides of the top plate 88 limit the maximum adjustment distance of the upper movable plate 82, preventing the upper movable plate 82 and the lower movable plate 81 from falling off the frame.

[0036] Considering that the shearing machine 3's transverse span needs to meet certain sheet material processing requirements, requiring a longer shear blade 63, to enhance the device's compactness, the present invention provides a second box-type mounting frame 61, located near the friction traction device 8, embedded between the upper and lower movable plates 82 and 81. The number of back rollers 86 is greater than the number of front rollers 85. The excess back rollers 86 over the front rollers 85 also convey the plastic sheet material 1, with the inner end surface of the second box-type mounting frame 61 serving as a support. This ensures both the conveyance of the plastic sheet material 1 and the shearing machine 3's shearing function while also reducing the device's footprint. Furthermore, considering that the shear blade 63 of the shearing machine 3 requires a certain cutting depth, the present invention provides multiple annular grooves 87 on the side of the back roller 86, without affecting the traction function of the back roller 86. These grooves 87 are designed to mate with the shear blade 63, providing a reasonable aperture and space for the shear blade 63's cutting action.

[0037] To ensure stable and safe output of the cut plastic sheet material 1, the present invention provides a support plate 9 disposed inside the vertical frame 4. The support plate 9 has a horizontal T-shaped longitudinal cross-section and is inserted into the saw blade positioning slot 41. The thickness of the support plate 9 is no greater than that of the saw blade 523, so the support plate 9 can be inserted into the gap in the cut of the plastic sheet material 1, dividing the cut sheet material into sections. This provides support for thick sheets while they are still being cut, thereby improving the cutting quality of the plastic sheet material 1.

[0038] To improve the conveying efficiency of plastic sheets 1, the present invention provides mounting brackets at the top and bottom of the feed roller 7. These brackets are provided with waist-shaped holes that flexibly engage with the rotational center of the feed roller 7. Positioning nuts are also provided at the top and bottom of the feed roller 7. Adjusting the relative spacing of the feed rollers 7 accommodates plastic sheets 1 of varying thicknesses, allowing them to stably and efficiently enter the cutting station for optimal cutting quality.

[0039] To improve the output quality of the plastic sheet 1, the present invention provides two mounting slots in the center of the bottom of the vertical frame 4, corresponding to the first adjustment device 5 and the second adjustment device 6, respectively. Multiple inclined scrapers 11 are provided in the mounting slots. As the plastic sheet 1 moves along the conveying port in the center of the vertical frame 4, its bottom surface effectively contacts the blade edges of the scrapers, promptly removing burrs and multiple edges from the plastic sheet 1. To improve trimming efficiency, the scrapers provided by the present invention gradually rise in the conveying direction of the plastic sheet 1 to fully trim any uneven portions of the plastic sheet 1.

[0040] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multi-purpose cutting device for producing plastic sheets, comprising a saw blade machine and a shearing machine, characterized in that: The saw blade machine and the shearing machine are arranged on a vertical frame and are respectively distributed near the two ends of the vertical frame. The vertical frame is provided with a first adjustment device and a second adjustment device for adjusting the working depth of the saw blade machine and the shearing machine respectively. The first adjustment device includes a hollow first box-type mounting frame, a pair of handles are provided on the front of the first box-type mounting frame, and the inner bottom of the first box-type mounting frame is used to install the saw blade machine. The main shaft of the saw blade machine faces upward and is provided with a quick-release saw blade assembly. The vertical frame is provided with a plurality of vertically spaced saw blade positioning long holes on the side facing the saw blade machine. The second adjustment device includes a hollow second box-type mounting frame. The vertical frame is provided with a plurality of shearing plate positioning holes on the side thereof facing the shearing plate, and a pair of vertical feeding rollers are provided at both ends of the vertical frame, and the feeding rollers are used for frictionally conveying plastic sheets, and a friction traction device cooperating with the feeding rollers is provided between the saw blade machine and the shearing plate.

2. The multi-purpose cutting device for producing plastic sheets according to claim 1, characterized in that: The quick-release saw blade assembly includes an output shaft, a side of the output shaft is provided with a keyway distributed along its length, a saw blade is provided on the output shaft and connected to its key, the top and bottom of the saw blade are provided with positioning screw sleeves, and the top of the output shaft is provided with a support shaft that passes through the top of the first box-type mounting bracket, and the support shaft is connected to the output shaft through a nested piece.

3. The multi-purpose cutting device for producing plastic sheets according to claim 1, characterized in that: The vertical adjustment assembly includes a pair of vertical slide rails, a slide plate is provided on the slide rails and is slidably matched with the slide rails, the shearing machine is installed on the slide plate, a pair of screw rods are provided on both sides of the slide plate, and a hand wheel is provided at the bottom of the screw rod.

4. The multi-purpose cutting device for producing plastic sheets according to claim 1, characterized in that: The friction traction device includes a pair of lower movable plates and a pair of upper movable plates, the lower movable plates are connected by multiple adjusting screws, and the upper movable plates are connected by multiple guide rods. A row of front rollers and a row of back rollers distributed on the front and back sides of the plastic plate are arranged between the lower movable plates and the upper movable plates.

5. The multi-purpose cutting device for producing plastic sheets according to claim 4, characterized in that: A top plate located at the top of the vertical frame is arranged between the upper movable plates, and the top plate is an inverted E-shaped structure. A connecting portion folded and extended toward the inner side of the top plate is provided on the top of the upper movable plate, and a spring is arranged between the connecting portion and the side wall of the top plate, and the spring is sleeved on the guide rod.

6. The multi-purpose cutting device for producing plastic sheets according to claim 5, characterized in that: The side of the second box-type mounting frame close to the friction traction device is embedded between the upper movable plate and the lower movable plate. The number of the back rollers is greater than the number of the front rollers and a plurality of annular grooves are provided on the side thereof, and the annular grooves are used to cooperate with the shearing knife.

7. The multi-purpose cutting device for producing plastic sheets according to claim 1, characterized in that: A supporting plate is arranged on the inner side of the vertical frame. The longitudinal section of the supporting plate is in a horizontal T-shape and is inserted into the long positioning hole of the saw blade.

8. The multi-purpose cutting device for producing plastic sheets according to claim 1, characterized in that: The top and bottom of the feeding roller are both provided with mounting seats, and the mounting seats are provided with waist-shaped holes, and the waist-shaped holes are movably matched with the rotation center of the feeding roller. The top and bottom of the feeding roller are both provided with positioning nuts.

9. The multi-purpose cutting device for producing plastic sheets according to claim 1, characterized in that: Two mounting slots corresponding to the first adjusting device and the second adjusting device are respectively provided in the middle of the bottom of the vertical frame, and a plurality of inclined scrapers are provided in the mounting slots.

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