Automatic cutting device with pitch servo adjustment function

Abstract

The utility model provides a kind of automatic cutting device with interval follow-up adjusting function, more specifically related to cutting technology field, specifically includes including rack, cutting knife, cylinder driving the movement of the cutting knife, lower cylinder subassembly, upper cylinder subassembly and at least a pair of fixed on the rack cylinder mounting plate, wherein, between each pair of the cylinder mounting plate, at least one light pole is also installed, and the axial both ends of the light pole are fixed with cylinder mounting plate respectively.Adopting the technical scheme, it can be used to solve the problems of manual adjustment of cutting distance, inability to automatically adapt to material thickness changes during operation, poor adaptability, low efficiency, easy to jam or overload and poor cutting in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of cutting technology, and in particular to an automatic cutting device with a spacing follow-up adjustment function. Background Technology

[0002] In industrial production, automatic material cutting devices are key equipment widely used in industries such as rubber, plastics, food, chemicals, and composite materials. They are used to cut large sheets or blocks of material into pre-defined units according to process requirements, facilitating subsequent transportation, processing, or mixing. A typical existing automatic material cutting device usually consists of a frame, cutting blades, a drive system (mostly hydraulic or electric), a material conveying mechanism (such as a conveyor belt or fixed rollers), and an electrical control system. Its basic workflow is as follows: the operator manually adjusts the spacing of the material fixing or conveying mechanism according to the target cutting size, and then starts the equipment. After the material is conveyed to below the cutting blades, the drive system moves the cutting blades downwards to complete the cutting operation. To ensure equipment safety, limit switches are usually installed on the frame to control the end point and start / end point of the cutting blades' stroke.

[0003] With the widespread adoption of automation technology, such devices have largely replaced manual operation. However, existing automatic material cutting devices still suffer from a significant common drawback: the spacing of their material fixing or conveying mechanisms (i.e., the key parameter determining the cutting size) needs to be manually preset and adjusted while the equipment is stopped. Once the equipment is running, the spacing is fixed and cannot be changed.

[0004] This fixed-interval working mode exposes serious problems when faced with varying material thicknesses or inconsistent incoming material specifications: it suffers from poor adaptability and low efficiency. Changing the cutting size necessitates interrupting the entire production process, requiring manual adjustments after shutdown. This not only frequently disrupts continuous production, severely restricting efficiency, but also fails to meet the demands of flexible manufacturing. Furthermore, this mode is prone to process defects and equipment malfunctions. When the actual material thickness exceeds the preset cutting interval, cutting resistance surges, easily leading to material blockages and equipment jamming, potentially overloading the drive motor and even damaging the blades or transmission mechanism. Conversely, if the material thickness is less than the preset interval, incomplete cutting results in oversized material blocks requiring secondary crushing, increasing additional steps and energy consumption. Moreover, the aforementioned jamming and overload issues pose safety hazards, and the inability to guarantee consistent cutting unit dimensions directly impacts the product quality of subsequent processes.

[0005] Therefore, there is an urgent need to provide an automatic cutting device with a spacing adjustment function to realize the automatic response adjustment of the cutting spacing when the material thickness changes, thereby improving cutting accuracy, avoiding material jamming, ensuring production safety, and improving overall operation efficiency. Summary of the Invention

[0006] The purpose of this utility model is to provide an automatic cutting device with a spacing adjustment function, which solves the problems in the prior art where the cutting spacing needs to be manually adjusted by stopping the machine, and the inability to automatically adapt to changes in material thickness during operation, resulting in poor adaptability, low efficiency, easy jamming or overload, and poor cutting.

[0007] In order to achieve the above-mentioned objectives of this utility model, the following technical solution is adopted: This utility model provides an automatic cutting device with a spacing follow-up adjustment function, including a frame, a cutter, and a cylinder for driving the cutter, and further including: At least one pair of roller mounting plates fixed to the frame, and at least one optical rod is installed between each pair of roller mounting plates, with the two ends of the optical rod respectively fixed to the roller mounting plates; The lower roller assembly includes at least one lower roller rotatably mounted on the roller mounting plate, the lower roller being located below the cutter; The upper roller assembly includes at least one upper roller, a movable sleeve, a limiting nut, and a spring. The movable sleeve is fitted onto the guide rod and can slide along its axial direction. The upper roller is rotatably mounted on the movable sleeve and is arranged opposite to the lower roller to form a gap for material to pass through. The limiting nut is threaded to the top of the guide rod. The spring is fitted onto the guide rod, with its lower end abutting against the bottom of the guide rod and its upper end abutting against the limiting nut.

[0008] Furthermore, it also includes a cylinder mounting plate and a connector. The cylinder mounting plate is disposed above the frame, the cylinder is fixed to the frame by the cylinder mounting plate, the connector is fixed above the cutter, and the piston rod of the cylinder is drivenly connected to the cutter by the connector.

[0009] Furthermore, a fixing nut is provided at the bottom of the light rod, and the bottom of the light rod is threadedly connected to the roller mounting plate through the fixing nut.

[0010] Furthermore, the upper roller assembly has two upper rollers, and the lower roller assembly also has two lower rollers, with the two upper rollers and the two lower rollers arranged in parallel and symmetrically.

[0011] Furthermore, there are four light rods, which are used to support the movable sleeves at both ends of the two upper rollers.

[0012] Furthermore, it also includes a cotter pin, and the ends of the upper and lower roller shafts are threaded with axial nuts. The axial nuts have pin holes, and the cotter pin passes through the pin holes for axial positioning.

[0013] Furthermore, a gasket is provided between the fixed nut and the movable sleeve.

[0014] Furthermore, the roller mounting plate and frame are made of carbon structural steel, while the upper roller, lower roller, guide rod, and movable sleeve are made of stainless steel.

[0015] The basic principles and beneficial effects of this technical solution are as follows: This technical solution utilizes a mechanical floating and elastic reset mechanism to achieve adaptive adjustment of the cutting gap. Its core lies in the unique design of the upper roller assembly: the upper roller is mounted on the guide rod via a movable sleeve and can slide along the guide rod's axial direction; an adjustment mechanism consisting of springs and limit nuts applies a controllable preload, giving the upper roller an initial downward pressure and forming an initial gap with the lower roller. When materials of varying thicknesses pass through this gap, the thicker areas of the material push up the upper roller, compressing the spring and automatically widening the gap to accommodate its thickness; the thinner areas of the material, under the spring's restoring force, ensure that the roller still effectively holds the material. The entire process requires no machine intervention, achieving real-time, automatic adjustment of the cutting gap to the material thickness through a purely mechanical structure, ensuring continuous and stable cutting action.

[0016] Compared with existing technologies, this technical solution can automatically adapt to natural fluctuations in material thickness or inconsistent incoming material specifications, fundamentally avoiding the risks of equipment jamming and blade damage caused by excessively thick materials, as well as incomplete cutting caused by excessively thin materials. This ensures both safe equipment operation and consistent cutting unit dimensions, improving product quality. Furthermore, by eliminating the need for frequent machine stops and manual spacing adjustments during production, it achieves truly continuous and flexible production, significantly improving operational efficiency. In addition, its core adjustment mechanism is simple in structure, low in cost, and highly reliable, requiring no complex control system, making it easy to maintain and possessing excellent practicality and economic efficiency. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1A three-dimensional structural diagram of an automatic cutting device with a spacing follow-up adjustment function; Figure 2 This is a front view of an automatic cutting device with a spacing follow-up adjustment function; Figure 3 This is a magnified view of point A in the main view of an automatic cutting device with adjustable spacing. Detailed Implementation

[0019] The embodiments and examples of this utility model will be described in detail below. However, those skilled in the art will understand that the following embodiments and examples are only for illustrating this utility model and should not be considered as limiting the scope of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0020] The markings in the accompanying drawings of the instruction manual include: frame 1, cutter 2, roller mounting plate 3, cylinder 4, movable sleeve 5, spring 6, lower roller 7, upper roller 8, cylinder mounting plate 9, connector 10, smooth rod 11, axial nut 12, cotter pin 121, limit nut 13, fixing nut 14, washer 15, and pin 16.

[0021] This utility model provides an automatic cutting device with a spacing follow-up adjustment function, as shown in the attached figure. Figure 1 Appendix Figure 2 and attached Figure 3 The device mainly includes a frame 1, a cutter 2, a cylinder 4 for driving the cutter 2, a roller mounting plate 3, guide rods 11, a lower roller assembly 7, and an upper roller assembly 8. The frame 1 provides stable support for the internal structure. At least one pair of roller mounting plates 3 are fixed to the frame 1 by welding or bolting. In this embodiment, there are two pairs of roller mounting plates 3. In other application scenarios, the corresponding number (such as 3 pairs, 4 pairs, etc.) of roller mounting plates 3 can be set according to actual needs. Two guide rods 11 are also installed longitudinally between each pair of roller mounting plates 3. In this embodiment, there are a total of four guide rods. External threads are machined at both ends of the guide rod 11. The top thread is connected to a limit nut 13, and the bottom thread is connected to a fixing nut 14. The guide rod 11 is fixedly connected to the roller mounting plate 3 by the nuts at both ends.

[0022] The lower roller 7 assembly includes at least one lower roller 7, and in this embodiment, two lower rollers 7 are provided. The lower roller 7 is rotatably mounted on the roller mounting plate 3. Specifically, the lower roller 7 is rotatably mounted on the roller mounting plate 3 through a fixed bearing seat and is located below the cutter 2. The position of the lower roller 7 remains fixed and forms a rigid connection with the roller mounting plate 3, thereby providing a stable reference plane for material conveying and cutting operations.

[0023] The upper roller assembly 8 includes at least one upper roller 8, a movable sleeve 5, a limiting nut 13, and a spring 6. In this embodiment, the upper roller 8 is consistent with the lower roller 7, and two are also provided. The two upper rollers 8 and the two lower rollers 7 are arranged in a parallel and symmetrical manner. This layout makes the material more evenly stressed and the conveying and cutting process more stable. The movable sleeve 5 is fitted onto the guide rod 11 and can slide along the axial direction of the guide rod 11. The four guide rods 11 are used to support the movable sleeves 5 at both ends of the two upper rollers 8, thereby providing independent and stable guidance for the two upper rollers 8. In addition, the upper roller 8 is rotatably mounted on the movable sleeve 5, so that the upper roller 8 can both rotate freely to convey materials and float up and down along the guide rod 11 with the movable sleeve 5. The upper roller 8 and the lower roller 7 are arranged opposite each other, forming a gap for material to pass through.

[0024] The spring 6 in the upper roller 8 assembly is sleeved on the aforementioned smooth rod 11, with its lower end abutting against the bottom fixing nut 14 and its upper end abutting against the top limiting nut 13. By adjusting the height of the top limiting nut 13 on the smooth rod 11, the compression of the spring 6 can be changed, thereby providing an adjustable, downward-directed elastic preload for the entire upper roller 8 assembly. In this embodiment, the fixing nut 14 at the bottom of the smooth rod 11 mainly serves to reliably install the smooth rod 11 on the roller mounting plate 3, while also providing a stable lower support surface for the spring 6. The top limiting nut 13, as an adjusting element, is used to precisely control the preload of the spring 6. Each component performs its specific function. The preload of the spring 6 ensures the necessary clamping force of the upper roller 8 on the material, ensuring smooth conveying. When encountering materials with increased thickness, the material can overcome the force of the spring 6 to lift the upper roller 8, automatically widening the gap and achieving "follow-up." After the thick material passes through, the force of the spring 6 can reset the upper roller 8, maintaining the clamping force on subsequent materials. This is the core mechanism for achieving adaptive adjustment.

[0025] To further optimize the structure, this embodiment also includes a cotter pin 121. Additionally, axial nuts 12 are threaded onto the ends of the shafts of the upper roller 8 and the lower roller 7. The axial nuts 12 have pin holes, and the cotter pin 121 passes through these pin holes. This double-locking structure effectively prevents the rollers from axially shifting or loosening under long-term vibration, greatly improving the reliability and safety of the equipment. Furthermore, a gasket 15 can be placed between the axial nut 12 and the movable sleeve 5 to distribute contact pressure, protect the surface of the parts, and extend their service life.

[0026] In this embodiment, the cylinder 4 (a high-speed cylinder 4) that drives the cutter 2 is fixed to the top of the frame 1 via the cylinder mounting plate 9. A connector 10 (such as an I-type connector) is also fixed above the cutter 2. The piston rod of the cylinder 4 is hinged to the connector 10 via a pin 16 (such as a flat-headed grooved pin 16), thereby driving the cutter 2 to perform high-speed, precise up-and-down reciprocating motion. This installation method ensures both driving stability and a certain degree of flexibility, adapting to minor deviations during the operation of the cutter 2.

[0027] In addition, in this embodiment, the moving parts such as the upper roller 8, lower roller 7, guide rod 11 and movable sleeve 5 are made of stainless steel (such as 630 stainless steel) to enhance their corrosion resistance and wear resistance; while the main load-bearing structures such as roller mounting plate 3 and frame 1 are made of carbon structural steel, which ensures strength while taking cost into account.

[0028] The operation of this device is as follows: Before operation, first, according to the reference thickness of the material to be cut, tighten the limiting nut 13 at the top of the guide rod 11 to adjust the preload of the spring 6 to a suitable size; then start the equipment, and the material is fed into the gap formed by the upper and lower rollers 7. When the material thickness is uniform, the upper and lower rollers 7 maintain the preset gap and stably convey the material to the bottom of the cutter 2, and the high-speed cylinder 4 drives the cutter 2 to complete the cutting; if the local thickness of the material increases, the thickened part will push up the upper roller 8 assembly, compress the spring 6, and make the gap automatically increase to adapt to the change, ensuring that the material passes through smoothly without jamming and continues to be effectively cut; when the material thickness returns to normal, the upper roller 8 automatically resets under the restoring force of the spring 6, thereby realizing the automatic and continuous adjustment of the cutting gap to the material thickness throughout the cutting process, without the need for machine stoppage intervention, effectively ensuring production efficiency and product quality.

[0029] In summary, the automatic cutting device with adjustable spacing provided in this embodiment can solve the problems in the prior art, such as the need to manually adjust the cutting spacing when the machine is stopped, the inability to automatically adapt to changes in material thickness during operation, resulting in poor adaptability, low efficiency, easy jamming or overload, and poor cutting.

[0030] Finally, it should be noted that 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. An automatic cutting device with adjustable spacing, comprising a frame, a cutter, and a cylinder for driving the cutter, characterized in that, Also includes: At least one pair of roller mounting plates fixed to the frame, and at least one guide rod installed between each pair of roller mounting plates, with the two ends of the guide rod respectively fixed to the roller mounting plates; The lower roller assembly includes at least one lower roller rotatably mounted on the roller mounting plate, the lower roller being located below the cutter; The upper roller assembly includes at least one upper roller, a movable sleeve, a limiting nut, and a spring. The movable sleeve is fitted onto the guide rod and can slide along its axial direction. The upper roller is rotatably mounted on the movable sleeve and is arranged opposite to the lower roller to form a gap for material to pass through. The limiting nut is threaded to the top of the guide rod. The spring is fitted onto the guide rod, with its lower end abutting against the bottom of the guide rod and its upper end abutting against the limiting nut.

2. The automatic cutting device with spacing follow-up adjustment function according to claim 1, characterized in that, It also includes a cylinder mounting plate and a connector. The cylinder mounting plate is disposed above the frame, and the cylinder is fixed to the frame by the cylinder mounting plate. The connector is fixed above the cutter, and the piston rod of the cylinder is drivenly connected to the cutter by the connector.

3. The automatic cutting device with spacing follow-up adjustment function according to claim 1, characterized in that, The bottom of the optical rod is also provided with a fixing nut, and the bottom of the optical rod is threadedly connected to the roller mounting plate through the fixing nut.

4. An automatic cutting device with spacing follow-up adjustment function according to claim 1, characterized in that, The upper roller assembly has two upper rollers, and the lower roller assembly also has two lower rollers. The two upper rollers and the two lower rollers are arranged in parallel and symmetrically.

5. An automatic cutting device with spacing follow-up adjustment function according to claim 4, characterized in that, The number of optical rods is four, which are used to support the movable sleeves at both ends of the two upper rollers.

6. An automatic cutting device with spacing follow-up adjustment function according to claim 1, characterized in that, It also includes a cotter pin, and the ends of the upper and lower roller shafts are threaded with axial nuts. The axial nuts have pin holes, and the cotter pin passes through the pin holes for axial positioning.

7. An automatic cutting device with spacing follow-up adjustment function according to claim 6, characterized in that, A gasket is also provided between the axial nut and the movable sleeve.

8. An automatic cutting device with spacing follow-up adjustment function according to claim 1, characterized in that, The roller mounting plate and frame are made of carbon structural steel, while the upper roller, lower roller, guide rod, and movable sleeve are made of stainless steel.

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