PP plate processing device

Abstract

This invention discloses a PP sheet processing device, including a horizontally arranged adjustable material guiding mechanism. Continuous PP sheets pass horizontally through the adjustable material guiding mechanism, which restricts the two sides and the upper edges of both sides of the PP sheet. A self-discharging conveying mechanism is arranged above the adjustable material guiding mechanism. The PP sheet is located between the adjustable material guiding mechanism and the self-discharging conveying mechanism. A multi-station cutting mechanism is arranged at the outlet end of the adjustable material guiding mechanism, and a dual-station cutting table is arranged at the multi-station cutting mechanism. This invention solves common industry problems of PP sheets, such as easy damage and deformation, inability to complete longitudinal and transverse cutting in one pass, high transfer loss, and difficulty in unloading. It also features versatility, high precision, high efficiency, and high yield. This invention is applicable to the technical field of PP sheet conveying and cutting.

Description

Technical Field

[0001] This invention belongs to the technical field of PP sheet processing, and more specifically, relates to a PP sheet processing device. Background Technology

[0002] PP sheets come in a wide variety of types. Based on differences in material formulation, structure, and application, they can be categorized into ordinary solid PP sheets, PP hollow sheets, PP honeycomb sheets, PP anti-corrosion sheets, and high-gloss PP decorative sheets. Different types of sheets differ in their physical properties, particularly in compressive strength, surface smoothness, and structural stability, which directly determines their suitable conveying methods. In conventional production scenarios, most PP sheets (such as ordinary solid PP sheets and PP anti-corrosion sheets) possess good compressive strength and structural stability, and can withstand a certain amount of rolling pressure. Therefore, double-roller conveyors are commonly used for conveying them. This conveying method uses two sets of symmetrically arranged rollers, utilizing the rotational friction of the rollers to propel the PP sheets forward at a uniform speed. It offers advantages such as high conveying efficiency, controllable speed, and stable operation, and can also provide a certain degree of surface smoothing during conveying, making it suitable for continuous batch production. Furthermore, double-roller conveyors can flexibly adjust the roller spacing and speed according to the thickness and width of the sheets, adapting to different specifications of conventional PP sheets. They are highly versatile and widely used in PP sheet production line conveying, warehousing, and other processes.

[0003] However, for certain special types of PP sheets, due to their inherent characteristics, roller-type conveying equipment is not suitable, otherwise it will lead to sheet damage, performance degradation, or substandard surface quality. The most representative examples are PP sheets requiring high surface smoothness and those unsuitable for roller pressing. PP sheets requiring surface smoothness (such as high-gloss PP decorative panels and food-grade PP packaging panels) must have a flat, smooth, scratch-free, and indentation-free surface for subsequent decoration, packaging, or precision processing. If these sheets are conveyed using roller-type conveying, the texture, impurities on the roller surface, or uneven pressure generated during the rolling process can easily leave indentations and scratches on the sheet surface, damaging the surface smoothness and leading to sheet scrap or reduced product grade. Another type of PP sheet unsuitable for roller pressing is PP honeycomb panels, as well as thin PP hollow boards and PP foam composite boards. The structure of this type of board is special. The inside of the PP honeycomb board is a honeycomb core, which has weak overall compressive strength and is prone to core collapse and board deformation under stress. Thin PP hollow board, although thin and tough, is not strong enough in terms of pressure resistance. It is prone to bending and creases during the rolling process, which affects the structural integrity of the board.

[0004] From a conventional production process perspective, after PP sheets are formed on the production line, the first step is transverse cutting, which involves cutting the continuously formed long strips of PP sheets into individual sheets according to preset length specifications. This is the most basic and common step in PP sheet cutting. This type of cutting is usually linked to the conveyor equipment, completing the transverse cutting during the sheet conveying process. A dedicated PP sheet transverse cutting machine is used, offering high cutting speed and precision, and can be synchronized with the conveyor speed for continuous cutting, suitable for batch production scenarios. However, in actual processing, transverse cutting alone often cannot meet subsequent processing needs; in some scenarios, longitudinal cutting of the PP sheets is also required. In this case, since conventional transverse cutting equipment is fixed on the conveyor line, it can only achieve single-direction cutting and cannot complete multi-direction cutting. Therefore, the PP sheets need to be transferred and conveyed to a dedicated cutting area for separate cutting using additional cutting equipment. Summary of the Invention

[0005] This invention provides a PP sheet processing device that solves common industry problems such as PP sheets being easily damaged or deformed, inability to complete longitudinal and transverse cutting in one go, high transfer losses, and difficulty in unloading. It also features versatility, high precision, high efficiency, and high yield.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A PP sheet processing device includes a horizontally arranged adjustable material guiding mechanism. Continuous PP sheets pass horizontally through the adjustable material guiding mechanism, which restricts the two sides and the upper edges of both sides of the PP sheet. A self-discharging conveying mechanism is arranged above the adjustable material guiding mechanism. The PP sheet is located between the adjustable material guiding mechanism and the self-discharging conveying mechanism. A multi-station cutting mechanism is arranged at the outlet end of the adjustable material guiding mechanism, and a dual-station cutting table is arranged at the multi-station cutting mechanism.

[0008] A further technical solution is that the adjustable material guiding mechanism includes two oppositely arranged strip connecting seats, a plurality of guide rollers are rotatably connected between the two strip connecting seats along the conveying direction of the PP sheet, and two adjustable limiting units are symmetrically installed between the two strip connecting seats.

[0009] A further technical solution is that the adjustable limiting unit includes a plurality of axially adjustable vertical guide wheels spaced apart along the conveying direction of the PP sheet. Each of the vertical guide wheels is rotatably connected between the upper strip seat and the lower strip seat, and the guide roller is located between the upper strip seat and the lower strip seat. The upper strip seat and the lower strip seat are connected to the strip connecting seat via an adjustment component.

[0010] A further technical solution is that the vertical guide wheel includes two limiting discs arranged opposite each other. Each limiting disc is rotatably connected to a corresponding upper strip seat / lower strip seat through a transfer shaft arranged coaxially with it. An arc-shaped limiting strip is uniformly constructed along its circumference at the end of the limiting disc away from the transfer shaft, and the arc-shaped limiting strips are inserted alternately in the two limiting discs.

[0011] A further technical solution is that the adjustment assembly includes two adapter plates disposed on the outside of the strip-shaped connecting seat. The two adapter plates are respectively disposed at both ends of the lower strip-shaped seat. A horizontal adjustment screw is threadedly connected to each adapter plate. One end of the horizontal adjustment screw is rotatably connected to the strip-shaped connecting seat. A vertical adjustment screw is rotatably connected to the upper end of the adapter plate. The vertical adjustment screw is threadedly connected to the upper strip-shaped seat. A horizontal guide rod is fixedly connected to the adapter plate. The horizontal guide rod moves through the strip-shaped connecting seat and connects to the lower strip-shaped seat.

[0012] A further technical solution is that the self-separating conveying mechanism includes two self-separating adsorption units symmetrically arranged laterally along the adjustable material guiding mechanism. The two self-separating adsorption units are respectively connected to the transverse lead screw with positive and negative threads, and the transverse lead screw is rotatably mounted on the mounting base. At least one transversely arranged connecting rod is fixed on the mounting base. The connecting rod is movably connected to each of the self-separating adsorption units. A first traveling member is installed on the mounting base, and the first traveling member is mounted on the first longitudinal guide rail.

[0013] A further technical solution is that the self-adsorption unit includes a plate-shaped seat connected to a transverse lead screw and a connecting rod. The plate-shaped seat is connected to an air suction seat below it via multiple vertical telescopic rods. Support wheels are rotatably installed at both ends of the plate-shaped seat along the conveying direction of the PP sheet. Electromagnets and magnetic blocks are installed at positions corresponding to the plate-shaped seat and the air suction seat, respectively.

[0014] A further technical solution is that the multi-station cutting mechanism includes a cutting machine mounted on a transverse guide rail via a second traveling member, a third traveling member installed at both ends of the transverse guide rail, a second longitudinal guide rail provided at both ends of the transverse guide rail, each third traveling member mounted on a corresponding second longitudinal guide rail, and a lifting member installed at both ends of each second longitudinal guide rail.

[0015] A further technical solution is that the dual-station cutting table includes a mounting base rotatably connected to the base via a vertical shaft, a transmission wheel is mounted on the vertical shaft, an adjustable material frame is provided above the mounting base, fourth traveling members are respectively mounted on both sides of the adjustable material frame, two vertical guide rails are mounted on the mounting base, and each fourth traveling member is assembled on the corresponding vertical guide rail.

[0016] A further technical solution is that the adjustable material frame includes two side bottom plates detachably connected to both sides of the main bottom plate, a groove is formed between the main bottom plate and each side bottom plate, a side upright plate is slidably connected to the side of each side bottom plate away from the main bottom plate, an adjusting screw is threadedly connected to the side upright plate, one end of the adjusting screw is rotatably connected to the side bottom plate, and the two side upright plates are respectively driven by the two adjusting screws to move closer or further apart from each other, at least one vertical driving component is installed on the side upright plate, and a pressure plate component is installed at the output end of the vertical driving component.

[0017] The technological advancements achieved by this invention compared to existing technologies, due to the adoption of the aforementioned structure, are as follows:

[0018] This invention consists of four core modules: an adjustable material guiding mechanism, a self-discharging conveying mechanism, a multi-station cutting mechanism, and a dual-station cutting platform. The entire module is arranged sequentially along the conveying direction of the PP sheet, realizing fully automated processing of precise guidance, damage-free conveying, primary cutting, stacking and reversing, and secondary cutting. It specifically solves the problems of high-gloss PP sheets, PP honeycomb sheets, hollow sheets, and other easily damaged sheets that cannot be rolled, transferred twice, or cut longitudinally and transversely in one go.

[0019] Continuous PP sheets enter the adjustable guide mechanism horizontally. This mechanism constrains the two side faces and top edges of the PP sheets, creating a dual constraint of side limiting and top edge anti-warping. The limiting distance can be quickly adjusted according to the sheet width and thickness to accommodate different PP sheet specifications, without contacting the effective middle surface of the PP sheet throughout the process. This ensures the PP sheets are conveyed in a straight line without deviation, swaying, or warping, providing a reference for subsequent conveying and cutting. A self-detaching conveyor mechanism is located directly above the adjustable guide mechanism, forming an intermittent conveying channel through which the PP sheets pass. During operation, the self-detaching conveyor mechanism flexibly adsorbs the upper part of the PP sheet (non-extrusion, non-rolling), causing the PP sheet to move smoothly forward against the adjustable guide mechanism, precisely delivering the front end of the PP sheet into the dual-station cutting table. After delivery, the adsorption is automatically released, and the structure design enables active detachment, avoiding vacuum adhesion and negative pressure adhesion that could lead to stretching and deformation of the PP sheet. After detachment, the self-retracting conveyor quickly returns to its longitudinal position, awaiting the next conveying, forming a cycle. The multi-station cutting mechanism performs initial processing at the outlet of the adjustable guide mechanism, transversely cutting the PP sheet that has traveled into position, cutting the continuous material into fixed-length single sheets. After the sheets are stacked and reversed, secondary processing is performed, longitudinally cutting multiple segments of the multi-layer stacked sheets, completing multi-specification processing in one go. After the initial transverse cutting, the dual-station cutting table receives the PP sheets and neatly stacks multiple finished products layer by layer, improving the efficiency of secondary cutting; after stacking, the dual-station cutting table precisely rotates 90°, so that the longitudinal direction of the PP sheets faces the multi-station cutting mechanism. After rotation to the correct position, the multi-station cutting mechanism starts, performing secondary cutting on the multi-layer stacked PP sheets. The width and clamping force of the dual-station cutting table are adjustable to adapt to PP sheets of different sizes and thicknesses, ensuring neat stacking without deviation.

[0020] This invention abandons the traditional roller extrusion method and adopts an adsorption-type non-contact conveying system, protecting high-gloss and mirror-finish PP boards from indentations and scratches; preventing PP honeycomb boards, hollow boards, and thin PP boards from collapsing, deforming, or cracking, significantly improving yield. A single machine achieves bidirectional cutting in both the transverse and longitudinal directions, eliminating the need for secondary transfers; this reduces bumps, scratches, and dimensional deviations, improving efficiency and precision. The self-discharging conveying mechanism completely solves the problem of vacuum suction preventing material unloading, resulting in more stable operation and suitability for long-term continuous automated production. The adjustable guide mechanism allows for quick adjustment of width, height, and limits, adapting to various PP board specifications and reducing changeover time.

[0021] In summary, this invention solves common industry problems such as PP sheets being easily damaged or deformed, being unable to complete longitudinal and transverse cutting in one go, having high transfer losses, and being difficult to unload, while also possessing versatility, high precision, high efficiency, and high yield. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram showing the corresponding structural configurations of the adjustable material guiding mechanism and the self-discharging conveying mechanism in an embodiment of the present invention;

[0026] Figure 3 for Figure 2 The front view of the structure shown;

[0027] Figure 4 This is a schematic diagram of the adjustable material guiding mechanism according to an embodiment of the present invention;

[0028] Figure 5 This is a front view of the adjustable material guiding mechanism according to an embodiment of the present invention;

[0029] Figure 6 This is a partial structural schematic diagram of the adjustable material guiding mechanism according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the vertical guide wheel in the adjustable material guiding mechanism according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the self-discharging conveyor mechanism according to an embodiment of the present invention;

[0032] Figure 9 This is a structural schematic diagram of the self-disengaging conveyor mechanism according to another embodiment of the present invention;

[0033] Figure 10 This is a side view of the structure of the self-detaching adsorption unit in the self-detaching conveying mechanism of this invention.

[0034] Figure 11 This is a schematic diagram of the structure of the multi-station cutting mechanism and the dual-station cutting table according to an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the multi-station cutting mechanism according to an embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of the structure of the dual-station cutting table according to an embodiment of the present invention;

[0037] Figure 14 This is a front view of the structure of the dual-station cutting table according to an embodiment of the present invention;

[0038] Figure 15 This is a schematic diagram of the structure of the side bottom plate of the dual-station cutting table according to an embodiment of the present invention;

[0039] Figure 16 This is a schematic diagram of the connection between the side plate, adjusting screw, vertical drive component and pressure plate component in the dual-station cutting table of this invention.

[0040] Components labeled: 100-Adjustable material guiding mechanism, 101-Strip connecting seat, 102-Guide roller, 103-Adjustable limiting unit, 1031-Upper strip seat, 1032-Lower strip seat, 1033-Adapter shaft, 1034-Limiting disc, 1035-Arc-shaped limiting strip, 1036-Horizontal guide rod, 1037-Adapter plate, 1038-Horizontal adjusting screw, 1039-Vertical adjusting screw, 200-Self-detaching conveying mechanism, 201-Assembly seat, 202-Self-detaching adsorption unit, 2021-Plate seat, 2022-Air suction seat, 2023-Air suction cup, 2024-Insertion pipe, 2025-Insertion rod, 2026-Connecting spring, 2027-Electromagnet, 2028-Magnetic block, 2029-Support wheel, 203-Horizontal lead screw, 20 4-Connecting rod, 205-First traveling member, 206-First longitudinal guide rail, 207-Connecting ear, 208-Strip hole, 300-Multi-station cutting mechanism, 301-Cut machine, 302-Second traveling member, 303-Transverse guide rail, 304-Third traveling member, 305-Second longitudinal guide rail, 306-Lifting member, 400-Dual-station cutting table, 401-Main base plate, 402-Side base plate, 403-U-shaped strip, 404-Groove, 405-Notch, 406-Guide groove, 407-Side upright plate, 408-Adjusting screw, 409-Guide block, 410-Vertical drive member, 411-Pressure plate member, 412-Fourth traveling member, 413-Vertical guide rail, 414-Mounting base, 415-Base, 416-Vertical shaft, 417-Transmission wheel. Detailed Implementation

[0041] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0042] This invention discloses a PP sheet processing device, such as... Figures 1-16As shown, the system includes an adjustable material guiding mechanism 100, a self-discharging conveying mechanism 200, a multi-station cutting mechanism 300, and a dual-station cutting table 400. The adjustable material guiding mechanism 100 is horizontally positioned, through which continuous PP sheets pass horizontally, and it also restricts the sides and top edges of the PP sheets. The self-discharging conveying mechanism 200 is positioned above the adjustable material guiding mechanism 100, with the PP sheets located between them. The multi-station cutting mechanism 300 is positioned at the outlet end of the adjustable material guiding mechanism 100, and the dual-station cutting table 400 is positioned at the multi-station cutting mechanism 300.

[0043] The working principle and advantages of this invention are as follows:

[0044] This invention consists of four core modules: an adjustable material guiding mechanism 100, a self-discharging conveying mechanism 200, a multi-station cutting mechanism 300, and a dual-station cutting table 400. The entire assembly is arranged sequentially along the conveying direction of the PP sheet, realizing fully automated processing of precise guidance, damage-free conveying, primary cutting, stacking and reversing, and secondary cutting. It specifically solves the problems of high-gloss PP sheets, PP honeycomb sheets, hollow sheets, and other easily damaged sheets that cannot be rolled, transferred twice, or cut longitudinally and transversely in one go.

[0045] Continuous PP sheets enter the adjustable guide mechanism 100 horizontally. The adjustable guide mechanism 100 constrains the two side facades and the two side upper edges of the PP sheets, forming a double constraint of side limiting and upper edge anti-warping. The limiting distance can be quickly adjusted according to the width and thickness of the sheets to adapt to different specifications of PP sheets, without contacting the effective middle surface of the PP sheets throughout the process; ensuring that the PP sheets are conveyed in a straight line without deviation, swaying, or warping, providing a reference for subsequent conveying and cutting. The self-detaching conveyor mechanism 200 is located directly above the adjustable guide mechanism 100, forming an intermittent conveying channel with the lower part, through which the PP sheets pass. During operation, the self-detaching conveyor mechanism 200 flexibly adsorbs the upper part of the PP sheets (non-extrusion, non-rolling), causing the PP sheets to move smoothly forward against the adjustable guide mechanism 100, accurately delivering the front end of the PP sheets into the dual-station cutting table. After conveying to the correct position, the adsorption is automatically released, and the structure design enables active detachment, avoiding vacuum adhesion and negative pressure suction that could cause the PP sheets to be stretched and deformed. After separation, the self-disengaging conveyor mechanism 200 quickly returns to its longitudinal position, awaiting the next conveying, forming a cycle. The multi-station cutting mechanism 300 performs initial processing at the outlet of the adjustable guide mechanism 100, transversely cutting the PP sheet that has traveled into position, cutting the continuous material into fixed-length single sheets. After the sheets are stacked and reversed, secondary processing is performed, longitudinally cutting multiple segments of the multi-layered stacked sheets, completing multi-specification processing in one go. After the initial transverse cutting, the dual-station cutting table 400 receives the PP sheets and neatly stacks multiple finished products layer by layer, improving the efficiency of secondary cutting. After stacking, the dual-station cutting table 400 precisely rotates 90°, aligning the longitudinal direction of the PP sheets with the multi-station cutting mechanism 300. After rotation to the correct position, the multi-station cutting mechanism 300 starts, performing secondary cutting on the multi-layered stacked PP sheets. The width and clamping force of the dual-station cutting table 400 are adjustable, adapting to PP sheets of different sizes and thicknesses, ensuring neat stacking without deviation.

[0046] This invention abandons the traditional roller extrusion method and adopts an adsorption-type non-contact conveying system, protecting high-gloss and mirror-finish PP boards from indentations and scratches; preventing PP honeycomb boards, hollow boards, and thin PP boards from collapsing, deforming, or breaking, significantly improving yield. A single machine achieves bidirectional cutting in both the transverse and longitudinal directions, eliminating the need for secondary transfers; this reduces bumps, scratches, and dimensional deviations, improving efficiency and precision. The self-detaching conveying mechanism 200 completely solves the problem of vacuum suction preventing material unloading, resulting in more stable operation and suitability for long-term continuous automated production. The adjustable guiding mechanism 100 allows for quick adjustment of width, height, and limits, adapting to various PP board specifications and reducing changeover time.

[0047] In summary, this invention solves common industry problems such as PP sheets being easily damaged or deformed, being unable to complete longitudinal and transverse cutting in one go, having high transfer losses, and being difficult to unload, while also possessing versatility, high precision, high efficiency, and high yield.

[0048] As a preferred embodiment of the present invention, such as Figures 3-7 As shown, the adjustable material guiding mechanism 100 includes two opposing strip-shaped connecting seats 101. Multiple guide rollers 102 are rotatably connected between these two strip-shaped connecting seats 101 along the conveying direction of the PP sheet. Two adjustable limiting units 103 are symmetrically installed between the two strip-shaped connecting seats 101. Each adjustable limiting unit 103 includes multiple axially adjustable vertical guide wheels spaced apart along the conveying direction of the PP sheet. Each vertical guide wheel is rotatably connected between the upper strip-shaped seat 1031 and the lower strip-shaped seat 1032. The guide rollers 102 are located between the upper strip-shaped seat 1031 and the lower strip-shaped seat 1032. The upper strip-shaped seat 1031 and the lower strip-shaped seat 1032 are connected to the strip-shaped connecting seats 101 via an adjusting assembly. The vertical guide wheel includes two limiting discs 1034 arranged opposite each other. Each limiting disc 1034 is rotatably connected to the corresponding upper strip seat 1031 / lower strip seat 1032 via a coaxial adapter shaft 1033. Arc-shaped limiting strips 1035 are uniformly constructed circumferentially at the end of each limiting disc 1034 away from the adapter shaft 1033, and the arc-shaped limiting strips 1035 in the two limiting discs 1034 are staggered. The adjustment assembly includes two adapter plates 1037 disposed on the outside of the strip connecting seat 101. These two adapter plates 1037 are respectively disposed at both ends of the lower strip seat 1032. A lateral adjusting screw 1038 is threaded onto each adapter plate 1037, and one end of the lateral adjusting screw 1038 is rotatably connected to the strip connecting seat 101. A vertical adjusting screw 1039 is rotatably connected to the upper end of the adapter plate 1037. The vertical adjusting screw 1039 is threadedly connected to the upper strip seat 1031. A horizontal guide rod 1036 is fixedly connected to the adapter plate 1037. The horizontal guide rod 1036 moves through the strip connecting seat 101 and is connected to the lower strip seat 1032.

[0049] The two strip-shaped connecting seats 101 in this embodiment provide a rigid mounting reference, with high overall strength and resistance to deformation. Multiple guide rollers 102 are evenly arranged along the conveying direction to form a continuous, low-resistance support surface. The bottom of the PP sheet is only subjected to rolling friction, without sliding scratches or local heavy pressure, protecting the surface smoothness. Two adjustable limiting units 103 are symmetrically arranged left and right, with uniform force, ensuring that the PP sheet is always conveyed along the centerline; avoiding deviation, edge scraping, and warping from the source, ensuring subsequent cutting accuracy. Multiple sets of vertical guide wheels are distributed along the conveying direction, providing continuous and impact-free guidance; multi-point limiting ensures that the PP sheet is stably constrained throughout its entire length, running smoothly without local jamming or jumping. The guide rollers 102 are located between the upper strip seat 1031 and the lower strip seat 1032, with a reasonable spatial layout; the limiting and support are coaxially aligned, making the limiting more accurate and the support more stable; the structure is compact, occupies little space, and is easy to integrate into the production line. The upper strip seat 1031 and the lower strip seat 1032 are connected by an adjustment component to achieve dual adjustment of width and height; it can quickly adapt to PP sheets of different widths and thicknesses, and no parts need to be replaced when changing specifications, making adjustment quick and improving the versatility of the equipment.

[0050] In this embodiment, the upper and lower limiting discs 1034 interlock, and the upper limiting disc 1034 and the guide roller 102 form a double limiting effect on the side and top edge of the PP sheet, completely preventing edge warping and tipping, which is especially suitable for thin sheets, honeycomb sheets, hollow sheets and other easily deformable sheets. The arc-shaped limiting strips 1035 are evenly distributed around the circumference, with a soft contact and no hard compression; the arc-shaped contact surface does not pinch, indent, or scratch the edge of the sheet, and rotates smoothly, avoiding edge wear, burrs, and chipping. The limiting discs 1034 rotate freely via the adapter shaft 1033 and follow the movement; they rotate synchronously with the movement of the PP sheet without relative sliding, completely avoiding scratches and dragging caused by traditional fixed edge guards. In this embodiment, the horizontal adjusting screw 1038, in conjunction with the horizontal guide rod 1036, enables precise width adjustment. Rotating the horizontal adjusting screw 1038 simultaneously adjusts the left and right limit distances, adapting to PP sheets of different widths. The horizontal guide rod 1036 ensures smooth, non-skewed, and non-jamming movement, and offers a wide adjustment range, covering multiple specifications with a single machine, reducing equipment investment. The vertical adjusting screw 1039 enables height self-adaptation, adjusting the gap between the upper limiting disc 1034 and the guide roller 102, adapting to PP sheets of different thicknesses.

[0051] As a preferred embodiment of the present invention, such as Figure 3 , Figure 8 , Figure 9 , Figure 10As shown, the self-detaching conveying mechanism 200 includes an assembly base 201, a transverse lead screw 203, and two self-detaching adsorption units 202. The two self-detaching adsorption units 202 are symmetrically arranged transversely along the adjustable material guiding mechanism 100. Each self-detaching adsorption unit 202 is connected to the transverse lead screw 203 via opposite threads, and the transverse lead screw 203 is rotatably mounted on the assembly base 201. At least one transversely arranged connecting rod 204 is fixed on the assembly base 201, and the connecting rod 204 is movably connected to each self-detaching adsorption unit 202. A first traveling member 205 is mounted on the assembly base 201 and is mounted on a first longitudinal guide rail 206. The self-adsorption unit 202 includes a plate-shaped seat 2021 and an air suction seat 2022. A horizontal lead screw 203 and a connecting rod 204 are both connected to the plate-shaped seat 2021. The plate-shaped seat 2021 is connected to the air suction seat 2022 below it via multiple vertical telescopic rods. Multiple air suction cups 2023 are installed at intervals along the conveying direction of the PP sheet at the lower end of the air suction seat 2022. Each vertical telescopic rod includes an interlocking connector 2024 and an interlocking rod 2025. The lower end of the connector 2024 is connected to the air suction seat 2022, and the upper end of the interlocking rod 2025 is connected to the plate-shaped seat 2021. A connecting spring 2026 connects the interlocking rod 2025 and the connector 2024. Support wheels 2029 are rotatably installed at both ends of the plate seat 2021 along the conveying direction of the PP sheet. Electromagnets 2027 and magnetic blocks 2028 are installed at the corresponding positions of the plate seat 2021 and the air suction seat 2022, respectively.

[0052] In this embodiment, two self-adsorption units 202 are connected to a forward and reverse threaded transverse screw 203. Rotating the transverse screw 203 can drive the two self-adsorption units 202 on both sides to move synchronously towards or away from each other, quickly adapting to PP sheets of different widths. The connecting rod 204 acts as a guide and limiter, ensuring that the plate seat 2021 moves smoothly without twisting. When the electromagnet 2027 is de-energized, there is no electromagnetic attraction between the plate seat 2021 and the air suction seat 2022. Under the elastic reset action of the vertical telescopic rod, the air suction seat 2022 remains in a low position and the air suction cup 2023 lightly touches the upper surface of the PP sheet. The air suction cup 2023 starts to suck air, forming a stable adsorption force. The assembly seat 201 moves forward along the first longitudinal guide rail 206 through the first traveling member 205, driving the PP sheet to be transported smoothly. After being conveyed to the correct position, the air suction cup 2023 stops suctioning, and at the same time, the electromagnet 2027 is energized to generate magnetic attraction, attracting the magnetic blocks 2028 on the plate-shaped seat 2021 and the air suction seat 2022, driving the air suction seat 2022 to overcome the elastic force of the connecting spring 2026 and lift upward; the support wheels 2029 at both ends of the plate-shaped seat 2021 provide support, allowing the air suction cup 2023 to detach from the surface of the PP sheet, completely avoiding the air suction cup 2023 adhering to the PP sheet due to residual vacuum force, and achieving active unloading without pulling or deformation.

[0053] In this embodiment, the transverse lead screw 203 with both positive and negative threads is synchronously widened to adapt to all width specifications. The self-elevating adsorption units 202 on both sides open and close synchronously with centering, eliminating the need for individual adjustment. This allows for rapid adaptation to PP sheets of different widths, resulting in high changeover efficiency, accurate conveying, and improved equipment versatility. Power-off natural low-position adsorption enhances structural safety and reduces energy consumption. During adsorption and conveying, the electromagnet 2027 does not require power; the vertical telescopic rod's elastic operation keeps the air suction seat 2022 in a low position, reducing energy consumption, avoiding electromagnetic heating, and ensuring more stable long-term continuous operation. The elastic and flexible fit prevents compression and damage to the PP sheet. The air suction seat 2022 is elastically pressed down by the connecting spring 2026, and the air suction cup 2023 only lightly touches the sheet surface, without hard pressure or roller compression. This perfectly protects high-gloss PP sheets, PP honeycomb sheets, and hollow sheets, preventing surface scratches, core collapse, and sheet deformation. During unloading, electromagnetic force forcibly lifts the air suction seat 2022, which, combined with the physical restraint of the support wheel 2029, fundamentally prevents the air suction cup 2023 from adsorbing PP sheets due to residual vacuum, thus preventing the PP sheets from being lifted, pulled, or warped, ensuring conveying accuracy and the integrity of the PP sheets. The insertion pipe 2024 and the insertion rod 2025 are interlocked, and with the help of the connecting spring 2026, stable floating is achieved. The air suction seat 2022 rises and falls without tilting or jamming, adapting to PP sheets of different thicknesses, ensuring both fit and unloading accuracy. Moreover, connecting ears 207 are constructed at both ends of the first longitudinal guide rail 206, and at least two strip holes 208 are provided side by side on each connecting ear 207. Each strip hole 208 extends vertically, and the first longitudinal guide rail 206 is connected to the lifting beam through the connecting ears 207. In this way, the height of the self-discharging conveying mechanism 200 can be adjusted by adjusting the connection position between the first longitudinal guide rail 206 and the lifting beam, thereby adapting to the conveying of different PP sheets with large thickness ranges. The first traveling member 205 works in conjunction with the first longitudinal guide rail 206 to ensure high straightness and no slippage during transport, providing a precise positioning reference for subsequent multi-station cutting and improving cutting accuracy.

[0054] In summary, the self-detaching conveying mechanism 200 of this embodiment adopts a working mode of elastic low-position adsorption when power is off and forced lifting and unloading when power is on. Combined with synchronous width adjustment of the front and back teeth, elastic floating fit, and anti-vacuum adhesion structure of the support wheel 2029, it achieves high-precision conveying of PP sheets without compression or damage. It completely solves the drawbacks of traditional adsorption conveying, such as easy adhesion, easy pulling of PP sheets, and high energy consumption. It is suitable for multiple specifications and types of PP sheets, and significantly improves processing stability and yield.

[0055] As a preferred embodiment of the present invention, such as Figure 11 , Figure 12As shown, the multi-station cutting mechanism 300 includes a cutting machine 301, a transverse guide rail 303, and a second traveling member 302. The cutting machine 301 is mounted on the transverse guide rail 303 via the second traveling member 302. An angle adjustment motor can be installed between the second traveling member 302 and the cutting machine 301. By controlling the operation of the angle adjustment motor, the cutting machine 301 can rotate from 0° to 90°, realizing the conversion of transverse cutting to longitudinal cutting of the conveyed PP sheet. Third traveling members 304 are installed at both ends of the transverse guide rail 303, and second longitudinal guide rails 305 are provided at both ends of the transverse guide rail 303. Each third traveling member 304 is mounted on the corresponding second longitudinal guide rail 305, and a lifting member 306 is installed at both ends of each second longitudinal guide rail 305.

[0056] In this embodiment, the angle adjustment motor drives the cutting machine 301 to switch between 0° and 90°, allowing for one-button switching between horizontal and vertical cutting modes. No equipment changes or manual handling of PP sheets are required; bidirectional cutting is completed in a single clamping operation, fundamentally avoiding bumps, scratches, and dimensional deviations caused by handling, significantly improving processing efficiency and yield. The cutting machine 301 moves along the horizontal guide rail 303 via the second traveling member 302, enabling horizontal cutting of PP sheets. The horizontal guide rail 303 moves along the second vertical guide rail 305 via the third traveling member 304, further expanding the vertical cutting range to cover PP sheets of different lengths, eliminating blind spots and adapting to various sizes of PP sheets. The lifting members 306 at both ends of the second vertical guide rail 305 can flexibly adjust the cutting height, adapting to both thin PP hollow boards and honeycomb boards (avoiding cutting through and deformation) and thick solid PP boards (ensuring adequate cutting depth), offering strong versatility and eliminating the need to replace parts when changing models.

[0057] As a preferred embodiment of the present invention, such as Figures 13-16As shown, the dual-station cutting table 400 includes a base 415, a vertical shaft 416, a mounting base 414, and an adjustable material frame. The mounting base 414 is fixedly connected to the vertical shaft 416, and the lower end of the vertical shaft 416 is rotatably connected to the base 415. A drive wheel 417 is mounted on the vertical shaft 416. The adjustable material frame is positioned above the mounting base 414. Fourth traveling members 412 are mounted on both sides of the adjustable material frame. Two vertical guide rails 413 are mounted on the mounting base 414, and each fourth traveling member 412 is assembled onto its corresponding vertical guide rail 413. The adjustable material frame includes a main base plate 401 and two side base plates 402. The two side base plates 402 are respectively disposed on the main base plate 401. Each side base plate 402 is detachably connected to the main base plate 401 via a U-shaped strip 403. A groove 404 is formed between the main base plate 401 and each side base plate 402 to facilitate the passage of the saw blade of the cutting machine 301. A side upright plate 407 is provided on the side of each side base plate 402 away from the main base plate 401. Multiple guide grooves 406 are spaced apart on the side base plate 402 along the conveying direction of the PP sheet. Each guide groove 406 extends laterally along the PP sheet. Multiple guide blocks 409 are installed at the lower end of the side upright plate 407. Each guide block 409 is slidably assembled in the corresponding guide groove 406, thereby achieving the purpose of sliding connection between the side upright plate 407 and the side base plate 402. A notch 405 is provided on the side base plate 402 away from the main base plate 401. The notch 405 extends in the same direction as the guide groove 406. An adjusting screw 408 is threaded onto the side upright plate 407. The adjusting screw 408 is located inside the notch 405, and its length direction is the same as the extension direction of the notch 405. One end of the adjusting screw 408 is rotatably connected to the side base plate 402. The two side upright plates 407 are moved closer or further apart by the transmission of the two adjusting screws 408. At least one vertical drive member 410 is installed on the side upright plate 407. A pressure plate member 411 is installed at the output end of the vertical drive member 410 to press the top of the stacked PP sheet. This facilitates the cutting machine 301 to cut the PP sheet once, and also facilitates the secondary cutting of the stacked PP sheet in the adjustable frame that rotates 90°.

[0058] In this embodiment, the vertical shaft 416, in conjunction with the transmission wheel 417, drives the mounting base 414 to rotate freely by 90°. This eliminates the need for manual transfer and secondary clamping, directly enabling the switching between horizontal and vertical cutting positions. It seamlessly integrates with the front-end multi-station cutting mechanism 300, achieving one-time loading, bidirectional cutting, and continuous processing of PP sheets, fundamentally avoiding bumps, scratches, and dimensional deviations caused by transfer. The adjustable material frame smoothly rises and falls along the vertical guide rail 413 via the fourth traveling member 412, allowing for the layering and neat stacking of multiple PP sheets, meeting the needs of multi-layer batch cutting and significantly improving processing efficiency. The lifting process is smooth and without wobbling or offset, ensuring the alignment of multiple PP sheets and solving the problems of scattered stacking and misaligned cutting of thin hollow boards and honeycomb boards. The main base plate 401 and the side base plate 402 are detachably connected by a U-shaped strip 403, allowing for quick assembly and disassembly, expansion of the material frame, and adaptation to different sizes of PP sheets. Pre-reserved structures such as grooves 404 and notches 405 do not interfere with assembly; changes in models do not require replacement of the entire material table, shortening setup time and improving equipment versatility. The dedicated groove 404 between the main base plate 401 and the side base plate 402 provides clearance for the saw blade of the cutting machine 301, preventing the saw blade from hitting the table surface or damaging the material table during cutting. It also prevents scratches, burrs, and chipping on the bottom of the PP sheet due to saw blade friction, protecting the integrity of the PP sheet's cross-section and bottom surface. The adjusting screw 408 drives the side upright plate 407 to smoothly move along the guide groove 406, with both sides opening and closing synchronously to quickly adapt to PP sheets of different widths. The guide block 409 precisely matches the guide groove 406, ensuring smooth, unobstructed movement without skewing or tilting, achieving precise side positioning of the PP sheet and preventing deviation, thus guaranteeing cutting straightness and dimensional accuracy. The vertical drive component 410 drives the pressure plate component 411 to flexibly and evenly press the stacked PP sheets. The pressure is controllable and will not crush the PP honeycomb board or hollow board core, nor will it damage the surface of the high-gloss PP sheet. After pressing, the PP sheet will not warp, shift, or move during cutting, and the cut surface will be flat, significantly improving the yield rate.

[0059] The first traveling member 205, the second traveling member 302, the third traveling member 304, and the fourth traveling member 412 can all be linear motors or linear slides, etc. The vertical drive member 410 and the lifting member 306 can all be linear electric cylinders, pneumatic cylinders, etc.

[0060] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A PP sheet processing device, characterized in that: The device includes a horizontally adjustable material guiding mechanism. Continuous PP sheets pass horizontally through the adjustable material guiding mechanism, which restricts the two sides and the upper edges of both sides of the PP sheets. A self-discharging conveying mechanism is provided above the adjustable material guiding mechanism. The PP sheets are located between the adjustable material guiding mechanism and the self-discharging conveying mechanism. A multi-station cutting mechanism is provided at the outlet end of the adjustable material guiding mechanism, and a dual-station cutting table is provided at the multi-station cutting mechanism.

2. The PP sheet processing device according to claim 1, characterized in that: The adjustable material guiding mechanism includes two oppositely arranged strip connecting seats, multiple guide rollers are rotatably connected between the two strip connecting seats along the conveying direction of the PP sheet, and two adjustable limiting units are symmetrically installed between the two strip connecting seats.

3. The PP sheet processing device according to claim 2, characterized in that: The adjustable limiting unit includes multiple axially adjustable vertical guide wheels spaced apart along the conveying direction of the PP sheet. Each vertical guide wheel is rotatably connected between the upper strip seat and the lower strip seat, and the guide roller is located between the upper strip seat and the lower strip seat. The upper strip seat and the lower strip seat are connected to the strip connecting seat via an adjustment component.

4. The PP sheet processing device according to claim 3, characterized in that: The vertical guide wheel includes two limiting discs arranged opposite each other. Each limiting disc is rotatably connected to a corresponding upper strip seat / lower strip seat via a transfer shaft arranged coaxially with it. An arc-shaped limiting strip is uniformly constructed along the circumference of the end of the limiting disc away from the transfer shaft, and the arc-shaped limiting strips are inserted alternately in the two limiting discs.

5. The PP sheet processing device according to claim 4, characterized in that: The adjustment assembly includes two adapter plates disposed on the outside of the strip-shaped connecting seat. The two adapter plates are respectively disposed at both ends of the lower strip-shaped seat. A horizontal adjustment screw is threadedly connected to each adapter plate. One end of the horizontal adjustment screw is rotatably connected to the strip-shaped connecting seat. A vertical adjustment screw is rotatably connected to the upper end of the adapter plate. The vertical adjustment screw is threadedly connected to the upper strip-shaped seat. A horizontal guide rod is fixedly connected to the adapter plate. The horizontal guide rod moves through the strip-shaped connecting seat and connects to the lower strip-shaped seat.

6. The PP sheet processing device according to claim 1, characterized in that: The self-separating conveying mechanism includes two self-separating adsorption units symmetrically arranged laterally along the adjustable material guiding mechanism. The two self-separating adsorption units are respectively connected to the transverse lead screw with positive and negative threads, and the transverse lead screw is rotatably mounted on the mounting base. At least one transversely arranged connecting rod is fixed on the mounting base. The connecting rod is movably connected to each self-separating adsorption unit. A first traveling member is installed on the mounting base and is mounted on a first longitudinal guide rail.

7. A PP sheet processing device according to claim 6, characterized in that: The self-adsorption unit includes a plate-shaped seat connected to a transverse lead screw and a connecting rod. The plate-shaped seat is connected to an air suction seat below it via multiple vertical telescopic rods. Support wheels are rotatably installed at both ends of the plate-shaped seat along the conveying direction of the PP sheet. Electromagnets and magnetic blocks are installed at positions corresponding to the plate-shaped seat and the air suction seat, respectively.

8. The PP sheet processing device according to claim 1, characterized in that: The multi-station cutting mechanism includes a cutting machine mounted on a transverse guide rail via a second traveling member, a third traveling member installed at each end of the transverse guide rail, a second longitudinal guide rail installed at each end of the transverse guide rail, each third traveling member mounted on a corresponding second longitudinal guide rail, and a lifting member installed at each end of each second longitudinal guide rail.

9. A PP sheet processing device according to claim 1, characterized in that: The dual-station cutting table includes a mounting base rotatably connected to the base via a vertical shaft, a transmission wheel mounted on the vertical shaft, an adjustable material frame above the mounting base, fourth traveling members mounted on both sides of the adjustable material frame, two vertical guide rails mounted on the mounting base, and each fourth traveling member assembled on the corresponding vertical guide rail.

10. A PP sheet processing device according to claim 9, characterized in that: The adjustable material frame includes two side base plates detachably connected to both sides of the main base plate. A groove is formed between the main base plate and each side base plate. A side upright plate is slidably connected to the side of each side base plate away from the main base plate. An adjusting screw is threadedly connected to the side upright plate. One end of the adjusting screw is rotatably connected to the side base plate. The two side upright plates are moved closer or further apart by the transmission of the two adjusting screws. At least one vertical driving component is installed on the side upright plate. A pressure plate is installed at the output end of the vertical driving component.

Images