Plastic sheet cutting device

Abstract

The utility model relates to a plastic sheet cutting device which comprises a machine frame, lifting mechanisms and cutting mechanisms, the two lifting mechanisms are installed on the machine frame in tandem, the two cutting mechanisms are installed on the portion, between the lifting mechanisms, of the machine frame in a left-right mode, the lifting mechanisms comprise guide rollers, vertical adjusting assemblies and synchronous assemblies, and the synchronous assemblies are installed on the machine frame in a left-right mode. The vertical adjusting assemblies are installed on the rack in tandem, the guide rollers are rotationally connected between the vertical adjusting assemblies, the synchronous assembly is in transmission connection between the vertical adjusting assemblies, the output end of the cutting mechanism is a disc, and the outer contour of the disc is conical. The height of the guide roller can be adjusted through the vertical adjusting assembly, so that the position of a plastic sheet is adjusted, the cutting depth of the plastic sheet by the disc is adjusted, and the plastic sheet cutting device is convenient and rapid and can be operated by one person.

Description

Technical Field

[0001] This utility model relates to the field of vacuum forming technology, specifically to a plastic sheet cutting device. Background Technology

[0002] When producing blister trays, the rolled plastic sheets are unwound on a feeding rack. The sheets need to be cut to a certain width to ensure they can smoothly enter the mold and are wide enough to produce the corresponding number of blister trays. The existing equipment in the workshop uses a disc cutter to cut the plastic sheets. The guide rollers used to adjust the cutting depth rely on lead screws connected to both ends for simultaneous lifting and lowering, requiring two people to work concurrently. Furthermore, adjustments need to be confirmed with a level, wasting considerable manpower and time. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a plastic sheet cutting device that allows a single person to adjust the height of the guide rollers through a synchronization component, which is convenient and quick.

[0004] The technical solution of this utility model is as follows: a plastic sheet cutting device, including a frame, a lifting mechanism and a cutting mechanism. There are two lifting mechanisms, one in front of the other and one behind the other, installed on the frame. There are two cutting mechanisms, one on the left and one on the right, installed on the frame between the lifting mechanisms. The lifting mechanism includes a guide roller, a vertical adjustment component and a synchronization component. The vertical adjustment components are installed on the frame, one in front of the other and one behind the other. The guide roller is rotatably connected between the vertical adjustment components. The synchronization component is drively connected between the vertical adjustment components. The output end of the cutting mechanism is a disc with a conical outer contour.

[0005] Furthermore, the frame is provided with columns on both the left and right sides, and a vertical sliding groove is provided in the middle of the column. The vertical adjustment component includes a vertical lead screw and a slider. The upper and lower ends of the vertical lead screw are rotatably connected in the sliding groove, and the slider is slidably connected in the sliding groove. The vertical lead screw passes through the slider and is drivenly connected to it. The vertical lead screws between the vertical adjustment components are drivenly connected by a synchronization component. The guide roller is rotatably connected between the sliders of the vertical adjustment components.

[0006] Furthermore, the sliding groove has a U-shaped opening on the inner side of the column, and the guide roller is located in the U-shaped opening.

[0007] Furthermore, a knob is provided at the upper end of the vertical lead screw, and the knob is located above the column.

[0008] Furthermore, the synchronization component includes a chain and sprockets, with the sprockets fixedly connected to the vertical lead screws, and the sprockets between the vertical lead screws connected by chain drive.

[0009] Furthermore, the frame is equipped with a braking mechanism, through which the chain passes, and the braking mechanism can press down on the chain.

[0010] Furthermore, the braking mechanism includes a brake platform, a brake plate, and a brake screw. The brake platform is fixedly connected to the frame. The upper end of the brake platform is provided with a through-groove. The front and rear ends of the through-groove are provided with guide grooves. The front and rear ends of the brake plate are slidably connected to the guide grooves. The brake screw is rotatably connected to the bottom of the through-groove. The middle part of the brake screw is connected to the brake plate. The upper end of the brake screw is provided with a handle. The brake plate can press the chain down to the bottom of the through-groove.

[0011] Furthermore, the cutting mechanism includes a moving table, a base, and the disc. The disc and the base are rotatably connected to the side of the moving table. The disc is located above the base. The frame is provided with a groove. A guide rail is fixedly connected to the groove and a transverse lead screw is rotatably connected to it. The side of the moving table is provided with a guide hole and a threaded hole. The guide rail is slidably connected to the guide hole, and the transverse lead screw is drivenly connected to the threaded hole. The transverse lead screw has a crank handle at one end located on the outside of the frame.

[0012] Furthermore, the middle part of the transverse lead screw is a frustum, and the thread directions on the left and right sides of the frustum are opposite.

[0013] Furthermore, the outer contour of the chassis is provided with a tapered groove.

[0014] Compared with the prior art, the advantages of this utility model are as follows: Under the joint support of two guide rollers, the plastic sheet is straightened and enters the cutting mechanism. The disc of the cutting mechanism presses down against the plastic sheet. As the plastic sheet moves forward, the conical lower end of the disc rolls on the surface of the plastic sheet and cuts it, thus realizing the cutting of the plastic sheet. The height of the guide rollers can be adjusted by the vertical adjustment component, thereby adjusting the position of the plastic sheet and thus adjusting the cutting depth of the disc on the plastic sheet. It is convenient and quick, and can be operated by a single person. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0019] Figure 4 This is a schematic diagram of the synchronization component of this utility model.

[0020] The components are as follows: 1. Frame; 101. Groove; 2. Guide roller; 3. Column; 301. Sliding groove; 302. U-shaped groove; 4. Knob; 5. Vertical lead screw; 6. Slider; 7. Sprocket; 8. Chain; 9. Brake table; 901. Receiving groove; 902. Guide groove; 10. Brake plate; 11. Brake lead screw; 12. Handle; 13. Moving table; 1301. Threaded hole; 1302. Guide hole; 14. Disc; 15. Chassis; 1501. Tapered groove; 16. Guide rail; 17. Horizontal lead screw; 18. Crank handle. Detailed Implementation

[0021] To further illustrate the technical means and effects of this utility model in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] like Figure 1-4 As shown, a plastic sheet cutting device includes a frame 1, a lifting mechanism, and a cutting mechanism. Two lifting mechanisms are mounted on the frame 1, one in front of the other, and two cutting mechanisms are mounted on the frame 1, one on the left and one on the right, between the lifting mechanisms. Each lifting mechanism includes guide rollers 2, vertical adjustment components, and a synchronization component. The vertical adjustment components are mounted on the frame 1, one in front of the other, and the guide rollers 2 are rotatably connected between the vertical adjustment components. The synchronization component is drively connected between the vertical adjustment components. The output end of the cutting mechanism is a disc 1. 4. The outer contour of the disc 14 is conical, which is a type of rolling cutter in the prior art. Under the joint support of the two guide rollers 2, the plastic sheet is straightened and enters the cutting mechanism. The disc 14 of the cutting mechanism presses down against the plastic sheet. As the plastic sheet moves forward, the conical lower end of the disc 14 rolls on the surface of the plastic sheet and cuts it, thus realizing the cutting of the plastic sheet. The height of the guide rollers 2 can be adjusted by the vertical adjustment component, thereby adjusting the position of the plastic sheet and thus adjusting the cutting depth of the disc 14 on the plastic sheet.

[0023] In the above embodiment, the frame 1 is provided with columns 3 on both the left and right sides. A vertical sliding groove 301 is provided in the middle of each column 3. The vertical adjustment assembly includes a vertical lead screw 5 and a slider 6. The upper and lower ends of the vertical lead screw 5 are rotatably connected to the sliding groove 301, and the slider 6 is slidably connected to the sliding groove 301. The vertical lead screw 5 passes through the slider 6 and is driven by it. The vertical lead screws 5 of the vertical adjustment assemblies are driven by a synchronization assembly. The guide roller 2 is rotatably connected between the sliders 6 of the vertical adjustment assemblies. Under the action of the synchronization assembly, the slider 6 can be moved up and down by the vertical lead screw 5, thereby adjusting the height of the guide roller 2. The sliding groove 301 has a U-shaped opening inside the column 3. The guide roller 2 is located in the U-shaped opening. The U-shaped opening provides space for the guide roller 2 to connect to the slider 6 and also provides upper and lower limits for the guide roller 2. A knob 4 is provided at the upper end of the vertical lead screw 5, located above the column 3 for easy manual adjustment. The synchronization component includes a chain 8 and a sprocket 7. The sprocket 7 is fixedly connected to the vertical lead screw 5, and the sprockets 7 between the vertical lead screws 5 are connected by the chain 8. The side of the column 3 is provided with an opening for the chain 8 to pass through. The transmission method between the sprocket 7 and the chain 8 is existing technology, which is stable and reliable, ensuring the accurate synchronous movement.

[0024] The frame 1 is equipped with a braking mechanism. The chain 8 passes through the braking mechanism, which can press down on the chain 8. After the height of the guide roller 2 is determined, pressing down on the chain 8 by the braking mechanism can prevent the slight rotation of the vertical lead screw 5, thereby ensuring that the positions of the slider 6 and the guide roller 2 no longer change, and thus ensuring the stability of the cutting effect. The braking mechanism includes a brake platform 9, a brake plate 10, and a brake screw 11. The brake platform 9 is fixedly connected to the frame 1. The upper end of the brake platform 9 is provided with a through-hole accommodating groove 901. The front and rear ends of the accommodating groove 901 are provided with guide grooves 902. The front and rear ends of the brake plate 10 are slidably connected in the guide grooves 902. The brake screw 11 is rotatably connected to the bottom of the accommodating groove 901. The middle part of the brake screw 11 is connected to the brake plate 10 for transmission. The upper end of the brake screw 11 is provided with a handle 12. The brake plate 10 can press the chain 8 down to the bottom of the accommodating groove 901. In the actual equipment, the brake platform 9 just supports the chain 8. Rotating the brake screw 11 can clamp the chain 8 between the brake plate 10 and the brake platform 9.

[0025] The cutting mechanism includes a movable table 13, a base 15, and a disc 14. Both the disc 14 and the base 15 are rotatably connected to the side of the movable table 13, with the disc 14 positioned above the base 15. A groove 101 is provided on the frame 1, within which a guide rail 16 is fixedly connected and a transverse lead screw 17 is rotatably connected. The movable table 13 has a guide hole 1302 and a threaded hole 1301 on its side. The guide rail 16 is slidably connected to the guide hole 1302, and the transverse lead screw 17 is drively connected to the threaded hole 1301. A crank handle 18 is provided at one end of the transverse lead screw 17 located outside the frame 1. By cranking the crank handle 18, the position of the movable table 13 can be adjusted, thereby changing the cutting position of the plastic sheet to obtain a plastic sheet of a certain width. The transverse lead screw 17 has a frustum in the middle, with the threads on the left and right sides of the frustum in opposite directions. The frustum provides a limit for the two movable tables 13, while the opposite thread directions allow the two movable tables 13 to move closer or further apart synchronously, improving the efficiency of adjusting the cutting width. The outer contour of the chassis 15 is provided with a tapered groove 1501, which corresponds to the outer contour of the disc 14. This can prevent the disc 14 from rolling on the chassis 15 and causing wear after cutting plastic sheets, and provide a safe distance for the disc 14.

[0026] Description of the working principle of this utility model:

[0027] When producing blister trays, the rolled plastic sheet of raw material is unwound on the feeding rack. The plastic sheet needs to be cut to a certain width to ensure that it can smoothly enter the mold and has sufficient width to make the corresponding number of blister trays. When the plastic sheet enters the device, it is supported by two guide rollers 2. After passing between the disc 14 and the base plate 15, the straightening of the plastic sheet will cause it to press against the disc 14. During the continuous production of blister trays, the disc 14 rolls on the surface of the moving plastic sheet and cuts it, thus achieving the cutting of the plastic sheet. During continuous operation, the plastic sheet will have slight jumping. The assembly gap of the disc 14 will also cause slight changes in the degree of jumping. At this time, the base plate 15 supports the plastic sheet, providing a stable cutting effect for the device.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A plastic sheet cutting device comprising a frame, two lifting mechanisms mounted on the frame in front and back, and two cutting mechanisms mounted on the frame between the lifting mechanisms in left and right, characterized in that: The lifting mechanism comprises guide rollers, vertical adjusting assemblies and a synchronous assembly, the vertical adjusting assemblies are installed on the frame in front and back, the guide rollers are rotatably connected between the vertical adjusting assemblies, and the synchronous assembly is drivingly connected between the vertical adjusting assemblies.

2. The plastic sheet cutting apparatus according to claim 1, wherein: Both left and right sides of the frame are provided with vertical columns, vertical sliding grooves are arranged in the middle of the vertical columns, the vertical adjusting assemblies comprise vertical screws and sliding blocks, the upper and lower ends of the vertical screws are rotatably connected in the sliding grooves, the sliding blocks are slidingly connected in the sliding grooves, the vertical screws pass through the sliding blocks and are drivingly connected therewith, the vertical screws between the vertical adjusting assemblies are drivingly connected through the synchronous assembly, and the guide rollers are rotatably connected between the sliding blocks of the vertical adjusting assemblies.

3. The plastic sheet cutting apparatus according to claim 2, wherein: The sliding grooves are provided with U-shaped openings in the inner sides of the vertical columns, and the guide rollers are located in the U-shaped openings.

4. The plastic sheet cutting apparatus according to claim 2, wherein: The upper end of the vertical screw is provided with a knob, and the knob is located above the vertical column.

5. The plastic sheet cutting apparatus of claim 2, wherein: The synchronous assembly comprises a chain and sprockets, the sprockets are fixedly connected to the vertical screws, and the sprockets between the vertical screws are drivingly connected through the chain.

6. The plastic sheet cutting apparatus according to claim 5, wherein: The frame is provided with a brake mechanism, the chain passes through the brake mechanism, and the brake mechanism can press the chain.

7. The plastic sheet cutting apparatus according to claim 6, wherein: The brake mechanism comprises a brake table, a brake plate and a brake screw, the brake table is fixedly connected to the frame, the upper end of the brake table is provided with a through accommodating groove, the front and rear ends of the accommodating groove are provided with guide grooves, the front and rear ends of the brake plate are slidingly connected in the guide grooves, the brake screw is rotatably connected to the bottom of the accommodating groove, the middle part of the brake screw is drivingly connected with the brake plate, the upper end of the brake screw is provided with a handle, and the brake plate can press the chain to the bottom of the accommodating groove.

8. The plastic sheet cutting apparatus of claim 1, wherein: The cutting mechanism comprises a moving table, a base plate and the disc, the disc and the base plate are rotatably connected to the side of the moving table, the disc is located above the base plate, the frame is provided with a groove, a guide rail is fixedly connected in the groove and a transverse screw is rotatably connected in the groove, the side of the moving table is provided with a guide hole and a threaded hole, the guide rail is slidingly connected with the guide hole, and the transverse screw is drivingly connected with the threaded hole, and the transverse screw is provided with a crank handle at one end located outside the frame.

9. The plastic sheet cutting apparatus of claim 8, wherein: The middle part of the transverse screw is a circular table, and the thread directions of the left and right sides of the circular table are opposite.

10. The plastic sheet cutting apparatus of claim 8, wherein: A conical groove is arranged on the outer contour of the base plate.

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