Rubber mat trimming and automatic compensation device

Abstract

The invention relates to the technical field of carton production equipment, in particular to a rubber mat trimming and automatic compensating device which comprises a rack, a die-cutting knife set used for cutting a special-shaped groove in a paperboard and a speed regulating mechanism used for automatically compensating and balancing the rotating speed of the die-cutting knife set. The first translation mechanism and the second translation mechanism are arranged in parallel, and the first translation mechanism is connected with a grinding mechanism in a sliding manner; the die cutter set is rotationally connected to the rack and located between the first translation mechanism and the second translation mechanism. The rubber mat is flattened by arranging the grinding mechanism, so that the surface of the rubber mat is kept uniform; and meanwhile, compensation of cut-in amount reduction of the cutting blade after the rubber mat is thinned is achieved through the automatic compensator, then the cut-in amount of the cutting blade on the rubber mat is kept unchanged, the rubber mat is driven by the speed adjusting mechanism to increase the rotating speed, and speed compensation of diameter reduction after the rubber mat is thinned is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of carton production equipment, and in particular to a rubber pad trimming and automatic compensation device. Background Art

[0002] In the field of corrugated cardboard printing and packaging, a standard corrugated cardboard box needs to go through printing, slotting, die-cutting and other processes to complete the product. The printing color group prints different patterns on the surface of the corrugated cardboard according to the order requirements. The slotting unit pre-presses the lines and notches according to the specific position of the pattern and the size of the box. The die-cutting unit can process more complex special-shaped boxes including portable bowl mouths to meet the design requirements of corrugated cardboard products.

[0003] Traditional die-cutting units are divided into two types: hard cutting and soft cutting. Among them, hard cutting usually adopts an upper and lower knife hard cutting structure, that is, the upper knife cuts into the notch of the lower knife. More specifically, the current slotting structure uses the impact and blade of the upper and lower knives to punch out the knife grooves on the surface of the cardboard, and it is not completely cut out; in this case, even if the knife is sharp, it will easily tear, and the edges of the slots will have burrs, burrs or jagged edges. Soft cutting uses a layer of soft pad wrapped around the outer side of the upper knife, and the lower knife adopts a hard knife structure, and the soft pad and the cutter are used to achieve the soft cutting effect of the cardboard. Although this soft cutting method can avoid the problem of burrs, burrs or jagged edges on the edges of the slots, it is necessary to grind and smooth the soft pad after each cutting to ensure that it can cooperate with the lower knife synchronously.

[0004] In the prior art, soft cutting usually uses a circular blade to cut the soft pad. This method requires manual blade alignment and cutting depth adjustment, which not only has low work efficiency, but also easily produces large errors during manual operation, affecting the flattening effect of the soft pad. At the same time, there is also a method of grinding the rubber pad using a grinding roller with the same length as the die-cutting unit. The grinding relies on the friction between the grinding roller and the rubber pad. When used for a long time, it is easy to cause the friction of various parts of the grinding roller to decrease, thereby causing the flattening effect of the soft pad to deteriorate and reducing the grinding accuracy of the grinding roller surface. At the same time, after the soft pad is flattened, the diameter of the soft pad becomes thinner, which easily leads to inconsistent rotation speeds between the upper knife and the lower knife, thereby affecting the die-cutting quality of the cardboard. Summary of the invention

[0005] In order to solve the technical defects raised in the above-mentioned background technology, the purpose of the present invention is to provide a rubber pad dressing and automatic compensation device, which automatically completes the correction and grinding of the rubber pad by setting a grinding mechanism, and uses the first drive component and the second drive component to respectively control the feed direction of the grinding wheel component and the cutting amount of the rubber pad, thereby realizing compensation for the reduced cutting amount of the cutting blade after the rubber pad is thinned, thereby keeping the cutting amount of the cutting blade in the rubber pad unchanged, and driving the rubber pad to accelerate the rotation speed through the speed regulating mechanism, realizing speed compensation for the reduced diameter after the rubber pad is thinned, thereby ensuring that the rotation speed of the cutting blade and the rubber pad is equal, making each mechanism stably cooperate, and thereby improving the reliability of the device.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A rubber pad trimming and automatic compensation device, comprising

[0008] A frame, wherein a first translation mechanism and a second translation mechanism are respectively arranged on the frame, wherein the first translation mechanism and the second translation mechanism are arranged in parallel, and a smoothing mechanism is slidably connected to the first translation mechanism;

[0009] The die-cutting knife group is used to cut special-shaped grooves on the paperboard. The die-cutting knife group is rotatably connected to the frame and is located between the first translation mechanism and the second translation mechanism. The die-cutting knife group includes a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft are arranged in parallel up and down, and a paper feeding gap for cutting the paperboard is formed between the first rotating shaft and the second rotating shaft;

[0010] A speed regulating mechanism is used for automatically compensating and balancing the rotation speed between the die-cutting knife groups. The speed regulating mechanism includes a plurality of gear groups meshingly connected to each other, an automatic compensator for balancing and adjusting the transmission ratio of the gear groups, and a speed regulating motor for driving the die-cutting knife groups to rotate. The plurality of gear groups are respectively installed on the first translation mechanism, the second translation mechanism and one end of the die-cutting knife groups; the automatic compensator is installed on the gear group between the die-cutting knife groups; the speed regulating motor is transmission-connected to the other end of the die-cutting knife groups;

[0011] The smoothing mechanism includes a nut mounting seat movably connected to the first translation mechanism, a grinding wheel assembly for smoothing, a first driving assembly transversely arranged on the nut mounting seat for driving the grinding wheel assembly to move in a horizontal direction, and a second driving assembly longitudinally arranged on the nut mounting seat for driving the grinding wheel assembly to move in an axial direction. A mounting hole is provided on the nut mounting seat, and a ball nut is embedded in the mounting hole; the grinding wheel assembly is fixed to one side of the nut mounting seat, and the grinding wheel assembly is respectively connected to the first driving assembly and the second driving assembly in a transmission manner.

[0012] Preferably, the grinding wheel assembly includes a grinding wheel and a grinding wheel rotating plate, the outer side of the grinding wheel is provided with a protective cover, and the grinding wheel is arranged perpendicular to the direction of the die-cutting knife group; a first guide assembly is arranged between the grinding wheel rotating plate and the nut mounting seat, and the grinding wheel rotating plate is slidably connected to the first guide assembly.

[0013] Preferably, the first drive assembly includes a first servo motor, a first planetary reducer and a first motor mounting seat, the first motor mounting seat is fixed between the nut mounting seat and the protective cover; the output end of the first servo motor is transmission-connected to the first planetary reducer, a plurality of ball bearings are sleeved on the output shaft of the first planetary reducer, and the output shaft of the first planetary reducer passes through the mounting hole and is rotationally connected to the grinding wheel.

[0014] Preferably, the second drive assembly includes a second servo motor, a second planetary reducer, a coupling sleeve, and a second motor mounting seat, the second motor mounting seat is fixedly connected to one side of the grinding wheel rotating plate, and an induction bracket is connected between the second motor mounting seat and the nut mounting seat; the output end of the second servo motor is transmission connected to the second planetary reducer, the coupling sleeve is arranged on the output shaft of the second planetary reducer, and one end of the coupling sleeve is transmission connected to a lifting transmission screw, and the lifting transmission screw is threadedly connected to the ball nut.

[0015] Preferably, the first guide assembly includes a first linear slide rail and a first linear slider, the first linear slide rail is arranged along the vertical direction of the nut mounting seat, and the first linear slide rail is slidably connected to the first linear slider; a plurality of first linear sliders are provided, and one side of the plurality of first linear sliders is fixedly connected to the grinding wheel rotating plate.

[0016] Preferably, the nut mounting seat has a Z-shaped structure, and a second guide assembly is provided on one end of the nut mounting seat close to the first driving assembly, the second guide assembly includes a slider mounting plate, a second linear slide rail and a second linear slider; the slider mounting plate is fixedly connected to the nut mounting seat; the second linear slide rail is arranged parallel to the second linear slider in a horizontal direction; a plurality of second linear sliders are provided, and the plurality of second linear sliders are fixedly connected to the slider mounting plate.

[0017] Preferably, a rubber pad is sleeved on the outer surface of the first rotating shaft; a cutting wheel is sleeved on the outer surface of the second rotating shaft, and a plurality of knife grooves for installing cutting blades are circumferentially distributed on the outer surface of the cutting wheel; when the second rotating shaft drives the cutting blade in the knife groove to rotate, the cutting blade abuts against the rubber pad during the rotation process.

[0018] Preferably, the automatic compensator adopts a mean encoder, which is installed on the frame and is respectively connected to the grinding mechanism and the die-cutting knife group through electrical signals. After the rubber pad is flattened by the grinding mechanism, the mean encoder automatically compensates and adjusts the rotation speed of the second rotating shaft to keep the rotation speed of the first rotating shaft and the second rotating shaft the same.

[0019] Preferably, the first translation mechanism includes a first horizontal screw rod, a first nut seat and a third servo motor, both ends of the first horizontal screw rod are fixed on the frame, and the first horizontal screw rod is located above the first rotating shaft; one end of the first horizontal screw rod is meshed with the gear set for transmission, and the other end is connected to the third servo motor for transmission; the first nut seat is threadedly connected to the first horizontal screw rod.

[0020] Preferably, the second translation mechanism includes a second horizontal screw rod, a second nut seat and a fourth servo motor, both ends of the second horizontal screw rod are fixed on the frame, and the second horizontal screw rod is located above the second rotating shaft; one end of the second horizontal screw rod is meshed with the gear set for transmission, and the other end is connected to the fourth servo motor for transmission; the second nut seat is threadedly connected to the first horizontal screw rod.

[0021] In summary, the beneficial effects of the present invention are:

[0022] The present invention flattens the rubber pad by setting a flattening mechanism so that the surface of the rubber pad remains uniform, and controls the feed direction of the grinding wheel assembly and the cutting amount of the rubber pad through the first drive assembly and the second drive assembly respectively, so that the rubber pad can be polished multiple times at different depths, thereby improving the utilization rate of the rubber pad and extending the service life of the rubber pad; at the same time, an automatic compensator is used to compensate for the reduced cutting amount of the cutting blade after the rubber pad is ground thin, thereby keeping the cutting amount of the cutting blade in the rubber pad unchanged, and a speed regulating mechanism is used to drive the rubber pad to accelerate the rotation speed, thereby achieving speed compensation for the reduced diameter of the rubber pad after it is ground thin, thereby ensuring that the rotation speed of the cutting blade is equal to that of the rubber pad, so that each mechanism cooperates stably, thereby improving the reliability of the rubber pad finishing and automatic compensation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the rubber pad trimming and automatic compensation device of the present invention;

[0024] Figure 2 yes Figure 1 A magnified view of the structure at point b;

[0025] Figure 3 yes Figure 1 A magnified view of the structure at a in the middle;

[0026] Figure 4 is an exploded view of the grinding mechanism in the present invention;

[0027] Figure 5 is a side view of the grinding mechanism of the present invention;

[0028] Figure 6 is a front view of the grinding mechanism of the present invention;

[0029] Figure 7 yes Figure 6 Section view of the AA plane.

[0030] 1. Frame; 2. Smoothing mechanism; 21. Nut mounting seat; 211. Mounting hole; 212. Ball nut; 22. Grinding wheel assembly; 221. Grinding wheel; 222. Grinding wheel rotating plate; 223. Protective cover; 23. First drive assembly; 231. First servo motor; 232. First planetary reducer; 233. First motor mounting seat; 234. Ball bearing; 24. Second drive assembly; 241. Second servo motor; 242. Second planetary reducer; 243. Coupling sleeve; 244. Second motor mounting seat; 245. Induction bracket; 246. Lifting transmission screw; 25. First guide assembly; 251. The first linear guide rail; 252, the first linear slider; 26, the second guide assembly; 261, the slider mounting plate; 262, the second linear guide rail; 263, the second linear slider; 3, the die-cutting knife assembly; 31, the first rotating shaft; 312, the second rotating shaft; 33, the rubber pad; 34, the cutting wheel; 341, the knife groove; 4, the speed regulating mechanism; 41, the gear set; 42, the automatic compensator; 43, the speed regulating motor; 5, the first translation mechanism; 51, the first horizontal lead screw; 52, the first nut seat; 53, the third servo motor; 6, the second translation mechanism; 61, the second horizontal lead screw; 62, the second nut seat; 63, the fourth servo motor. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0032] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0033] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the description of the present invention, if there are words such as "several", it means one or more, "more" means two or more, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there are descriptions of first, second, and third, they are only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] The following is combined with Figure 1-7 , an embodiment of a rubber pad trimming and automatic compensation device of the present invention is further described in detail.

[0036] A rubber pad 33 trimming and automatic compensation device, such as Figure 1 , 2 As shown, it includes a frame 1, a die-cutting knife group 3 for cutting special-shaped grooves on paperboard, and a speed regulating mechanism 4 for automatically compensating and balancing the rotation speed of the die-cutting knife group 3. The frame 1 is respectively provided with a first translation mechanism 5 and a second translation mechanism 6. The first translation mechanism 5 and the second translation mechanism 6 are arranged in parallel, and the first translation mechanism 5 is slidably connected to the grinding mechanism 2; the die-cutting knife group 3 is rotatably connected to the frame 1, and the die-cutting knife group 3 is located between the first translation mechanism 5 and the second translation mechanism 6. The die-cutting knife group 3 includes a first rotating shaft 31 and a second rotating shaft 32. The first rotating shaft 31 and the second rotating shaft 33 are connected to each other. 2 are arranged in parallel up and down, and a paper feeding gap for cutting paperboard is formed between the first rotating shaft 31 and the second rotating shaft 32; the speed regulating mechanism 4 includes a plurality of gear sets 41 meshingly connected to each other, an automatic compensator 42 for balancing and adjusting the transmission ratio of the gear sets 41, and a speed regulating motor 43 for driving the die-cutting knife set 3 to rotate, and the plurality of gear sets 41 are respectively installed on the first translation mechanism 5, the second translation mechanism 6 and one end of the die-cutting knife set 3; the automatic compensator 42 is installed on the gear sets 41 between the die-cutting knife sets 3; and the speed regulating motor 43 is transmission-connected to the other end of the die-cutting knife set 3.

[0037] Specifically, when the cardboard is die-cut to form a special-shaped hole, the cardboard is conveyed along the paper feeding gap to the first rotating shaft 31 and the second rotating shaft 32 to complete the die-cutting. During the die-cutting process, a rubber pad 33 is sleeved on the outer surface of the first rotating shaft 31, and the rubber pad 33 is made of a soft material; a cutting wheel 34 is sleeved on the outer surface of the second rotating shaft 32, and a plurality of knife grooves 341 for installing a cutting blade are distributed circumferentially on the outer surface of the cutting wheel 34; the knife groove 341 is a circular hole structure, and a cutting blade can be detachably connected in the knife groove 341, and the cutting blade is perpendicular to the second rotating shaft 3 2; wherein, different types of cutting blades can be replaced in the knife groove 341 according to the die-cutting requirements. During die-cutting, the cutting blade movably cuts into the rubber pad 33, and then punches a notch on the surface of the middle paperboard to achieve a soft cutting effect, so that the punching cut of the paperboard is evenly stressed, the neatness of the cut notch is improved and the problem of notch tearing is prevented, product standardization is ensured, and the product yield is greatly improved. At the same time, it can also prevent the formation of knife-breaking problems, reduce the wear of the cutting blade, and extend the service life of the cutting blade, thereby reducing production costs and improving production efficiency.

[0038] Since the rubber pad 33 and the cutting blade are soft cut, when the second rotating shaft 32 drives the cutting blade in the knife groove 341 to rotate, the cutting blade abuts against the rubber pad 33 during the rotation process, so that after the cutting blade completes the die-cutting of the paperboard, knife marks are generated on the surface of the rubber pad 33 and the surface of the rubber pad 33 becomes uneven. Therefore, the rubber pad 33 needs to be trimmed and smoothed by the smoothing mechanism 2.

[0039] After the surface of the rubber pad 33 is ground and leveled by the flattening mechanism 2, the speed of the second rotating shaft 32 changes due to the reduction in diameter of the rubber pad 33 after being ground thin, which leads to unequal rotational linear speeds of the cutting blade and the rubber pad 33, thereby affecting the subsequent cardboard die-cutting effect; in order to solve this problem, the present invention provides an automatic compensator 42 to compensate for the reduced cutting amount of the cutting blade after the rubber pad 33 is ground thin, wherein the automatic compensator 42 adopts a mean encoder, which is installed on the frame 1, and the mean encoder is respectively connected to the flattening mechanism 2 and the die-cutting knife group 3 through electrical signals. After the rubber pad 33 is flattened by the flattening mechanism 2, the mean encoder automatically compensates and adjusts the rotation speed of the second rotating shaft 32, so that the rotation speeds of the first rotating shaft 31 and the second rotating shaft 32 remain the same, so that each mechanism can be stably coordinated, thereby improving the reliability of the rubber pad 33 trimming and automatic compensation device.

[0040] In this embodiment, if Figure 1As shown, the first translation mechanism 5 includes a first horizontal lead screw 51, a first nut seat 52 and a third servo motor 53. Both ends of the first horizontal lead screw 51 are fixed on the frame 1, and the first horizontal lead screw 51 is located above the first rotating shaft 31; one end of the first horizontal lead screw 51 is meshed with the gear set 41 for transmission, and the other end is connected to the third servo motor 53 for transmission; the first nut seat 52 is threadedly connected to the first horizontal lead screw 51. The second translation mechanism 6 includes a second horizontal lead screw 61, a second nut seat 62 and a fourth servo motor 63. Both ends of the second horizontal lead screw 61 are fixed on the frame 1, and the second horizontal lead screw 61 is located above the second rotating shaft 32; one end of the second horizontal lead screw 61 is meshed with the gear set 41 for transmission, and the other end is connected to the fourth servo motor 63 for transmission; the second nut seat 62 is threadedly connected to the first horizontal lead screw 51.

[0041] Specifically, the first horizontal screw rod 51 and the second horizontal screw rod 61 are respectively fixed between the frame 1, and the first horizontal screw rod 51 is arranged parallel to the top of the first rotating shaft 31, and the second horizontal screw rod 61 is arranged parallel to the bottom of the second rotating shaft 32. In the present invention, the grinding mechanism 2 is installed on the first translation mechanism 5, so that it can move horizontally along the top of the first rotating shaft 31 under the action of the first translation mechanism 5, so that the grinding mechanism 2 can complete the grinding of the rubber pad 33 from left to right or from right to left. Among them, the two ends of the first horizontal screw rod 51 and the second horizontal screw rod 61 are respectively fixed to the frame 1 by the first nut and the second nut seat 62, so that the first horizontal screw rod 51 and the second horizontal screw rod 61 can rotate under the drive of the third servo motor 53 and the fourth servo motor 63.

[0042] In this embodiment, if Figure 3-7 As shown, the smoothing mechanism 2 includes a nut mounting seat 21 movably connected to the first translation mechanism 5, a grinding wheel assembly 22 for smoothing, a first driving assembly 23 transversely arranged on the nut mounting seat 21 for driving the grinding wheel assembly 22 to move in a horizontal direction, and a second driving assembly 24 longitudinally arranged on the nut mounting seat 21 for driving the grinding wheel assembly 22 to move in an axial direction. A mounting hole 211 is provided on the nut mounting seat 21, and a ball nut 212 is embedded in the mounting hole 211; the grinding wheel assembly 22 is fixed to one side of the nut mounting seat 21, and the grinding wheel assembly 22 is respectively connected to the first driving assembly 23 and the second driving assembly 24.

[0043] In this embodiment, if Figure 4 As shown, the grinding wheel assembly 22 includes a grinding wheel 221 and a grinding wheel rotating plate 222. A protective cover 223 is provided on the outer side of the grinding wheel 221, and the grinding wheel 221 is arranged perpendicular to the direction of the die-cutting knife group 3; a first guide assembly 25 is arranged between the grinding wheel rotating plate 222 and the nut mounting seat 21, and the grinding wheel rotating plate 222 is slidably connected to the first guide assembly 25.

[0044] Specifically, the grinding wheel 221 is made of a high-strength steel structure, and a protective cover 223 is provided on the outer side of the grinding wheel 221 to prevent waste chips generated during the grinding process from splashing into other mechanisms and thus affecting the operation of the entire device. When grinding the rubber pad 33, cutting is achieved through the high-speed rotation of the grinding wheel 221, thereby getting rid of the tearing of the rubber pad 33 caused by the current use of a circular blade or a grinding roller structure, as well as the uneven surface of the rubber pad 33 and the burrs or serrated edges on the edges. At the same time, in the process of grinding the rubber pad 33, the grinding wheel 221 moves in the horizontal and vertical directions under the action of the grinding wheel rotating plate 222, so that it can automatically complete operations such as tool setting, feeding and retracting, and then automatically control the cutting amount of the grinding wheel 221 into the rubber pad 33, so that the surface of the rubber pad 33 can be trimmed and leveled.

[0045] When the grinding wheel 221 moves in the vertical direction along the nut mounting seat 21, it is lifted up and down by the first guide assembly 25. The first guide assembly 25 includes a first linear slide 251 and a first linear slider 252. The first linear slide 251 is arranged in the vertical direction of the nut mounting seat 21, and the first linear slide 251 is slidably connected with the first linear slider 252. There are multiple first linear sliders 252, and one side of the multiple first linear sliders 252 is fixedly connected with the grinding wheel rotating plate 222. The grinding wheel 221 automatically adjusts the lifting height according to the thickness requirement of the cutting rubber pad 33, thereby changing the depth of the grinding wheel 221 cutting into the rubber pad 33, so that it can complete the trimming of the rubber pad 33 according to the production requirements, and perform speed compensation on the trimmed rubber pad 33 to ensure that the rotational linear speed between the cutting wheel 34 and the rubber pad 33 is equal, thereby avoiding the problem of poor die-cutting effect caused by the different rotation speeds of the rubber pad 33 and the cutting wheel 34.

[0046] In this embodiment, if Figure 7 As shown, the first driving assembly 23 includes a first servo motor 231, a first planetary reducer 232 and a first motor mounting seat 233. The first motor mounting seat 233 is fixed between the nut mounting seat 21 and the protective cover 223. The output end of the first servo motor 231 is transmission-connected to the first planetary reducer 232. A plurality of ball bearings 234 are sleeved on the output shaft of the first planetary reducer 232. The output shaft of the first planetary reducer 232 passes through the mounting hole 211 and is rotationally connected to the grinding wheel 221.

[0047] Specifically, the first servo motor 231 controls the rotation of the grinding wheel 221 by providing driving force, and at the same time, the speed is adjusted by the first planetary reduction motor 232 at the output end of the first servo motor 231. The first planetary reduction motor is used to control and adjust the speed of the first servo motor 231, and the output shaft of the first planetary reduction motor passes through the mounting hole 211 and is rotatably connected to the grinding wheel 221, so that the first drive assembly 23 can directly control the speed of the grinding wheel 221. In addition, the first motor mounting seat 233 is fixed to one side of the nut mounting seat 21, and a plurality of ball bearings 234 are sleeved on the output shaft of the first planetary reducer 232. The ball bearings 234 can solve the impact when the first planetary reducer 232 is installed on the first motor mounting seat 233.

[0048] In this embodiment, if Figure 5 , 6 As shown, the second driving assembly 24 includes a second servo motor 241, a second planetary reducer 242, a coupling sleeve 243, and a second motor mounting seat 244. The second motor mounting seat 244 is fixedly connected to one side of the grinding wheel rotating plate 222, and an induction bracket 245 is connected between the second motor mounting seat 244 and the nut mounting seat 21; the output end of the second servo motor 241 is transmission connected to the second planetary reducer 242, the coupling sleeve 243 is arranged on the output shaft of the second planetary reducer 242, and one end of the coupling sleeve 243 is transmission connected to a lifting transmission screw 246, and the lifting transmission screw 246 is threadedly connected to the ball nut 212.

[0049] Specifically, when controlling the depth of the grinding wheel 221 cutting into the rubber pad 33, the second planetary reducer 242 is used to reduce the rotation speed of the second servo motor 241, and drive the lifting transmission screw 246 to rotate, wherein the lifting transmission screw 246 is threadedly connected to the ball nut 212 on the nut mounting seat 21, thereby driving the second nut seat 62 to vertically descend along the first vertical screw, so that the second motor mounting seat 244 drives the grinding wheel rotating plate 222 to slide vertically and descend along the first guide assembly 25, and then the second servo motor 241 drives the grinding wheel 221 to feed vertically, so that the rubber pad 33 can be polished multiple times at different depths, thereby improving the utilization rate of the rubber pad 33 and extending the service life of the rubber pad 33.

[0050] In this embodiment, if Figure 5 As shown, the nut mounting seat 21 has a Z-shaped structure, and a second guide assembly 26 is provided on one end of the nut mounting seat 21 close to the first driving assembly 23, and the second guide assembly 26 includes a slider mounting plate 261, a second linear slide rail 262 and a second linear slider 263; the slider mounting plate 261 is fixedly connected to the nut mounting seat 21; the second linear slide rail 262 is arranged parallel to the second linear slider 263 in the horizontal direction; a plurality of second linear sliders 263 are provided, and the plurality of second linear sliders 263 are fixedly connected to the slider mounting plate 261.

[0051] Specifically, the nut mounting seat 21 is used to support and fix the grinding wheel assembly 22, the first drive assembly 23 and the second drive assembly 24, and in order to facilitate the installation of the first drive assembly 23 and the second drive assembly 24 in different directions on the nut mounting seat 21, the nut mounting seat 21 is set to a Z-shaped structure, so that the first drive assembly 23 and the second drive assembly 24 can be transmitted in the horizontal direction and the vertical direction without affecting each other; at the same time, a detection device is installed on the second guide assembly 26 set on the nut mounting seat 21, and the detection device monitors the thickness of the rubber pad 33 cut by the grinding wheel 221 in real time to ensure that the surface of the rubber pad 33 can be ground flat. Among them, the detection device can use a visual detector or a displacement sensor.

[0052] Working principle of the present invention:

[0053] After the die-cutting knife group 3 has die-cut the cardboard, it is necessary to smooth the surface of the rubber pad 33. First, the first translation mechanism 5 is used to drive the smoothing mechanism 2 to move to the leftmost or rightmost end of the second rotating shaft 32; then, under the driving action of the first driving component 23, the grinding wheel component 22 can automatically complete the knife adjustment operation, and at the same time, under the action of the second driving component 24, the grinding wheel component 22 is driven to control the cutting amount of the rubber pad 33 by itself; finally, after completing the smoothing operation of the rubber pad 33, in order to compensate for the reduced cutting amount of the cutting blade after the rubber pad 33 is thinned and to ensure that the cutting amount of the cutting blade in the rubber pad 33 remains unchanged, the automatic compensator 42 is used to cooperate with the speed regulating component to drive the rubber pad 33 to accelerate the rotation speed, so as to achieve speed compensation for the reduced diameter of the rubber pad 33 after the rubber pad 33 is thinned, and to ensure that the rotation speed of the cutting wheel 34 is equal to that of the rubber pad 33, so that automatic compensation can be achieved after automatic trimming of the rubber pad 33, thereby improving the die-cutting efficiency.

[0054] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rubber pad trimming and automatic compensation device, characterized in that: include A frame, wherein a first translation mechanism and a second translation mechanism are respectively arranged on the frame, wherein the first translation mechanism and the second translation mechanism are arranged in parallel, and a smoothing mechanism is slidably connected to the first translation mechanism; The die-cutting knife group is used to cut special-shaped grooves on the paperboard. The die-cutting knife group is rotatably connected to the frame and is located between the first translation mechanism and the second translation mechanism. The die-cutting knife group includes a first rotating shaft and a second rotating shaft. The first rotating shaft and the second rotating shaft are arranged in parallel up and down, and a paper feeding gap for cutting the paperboard is formed between the first rotating shaft and the second rotating shaft; A speed regulating mechanism is used for automatically compensating and balancing the rotation speed between the die-cutting knife groups. The speed regulating mechanism includes a plurality of gear groups meshingly connected to each other, an automatic compensator for balancing and adjusting the transmission ratio of the gear groups, and a speed regulating motor for driving the die-cutting knife groups to rotate. The plurality of gear groups are respectively installed on the first translation mechanism, the second translation mechanism and one end of the die-cutting knife groups; the automatic compensator is installed on the gear group between the die-cutting knife groups; the speed regulating motor is transmission-connected to the other end of the die-cutting knife groups; The smoothing mechanism includes a nut mounting seat movably connected to the first translation mechanism, a grinding wheel assembly for smoothing, a first driving assembly transversely arranged on the nut mounting seat for driving the grinding wheel assembly to move in a horizontal direction, and a second driving assembly longitudinally arranged on the nut mounting seat for driving the grinding wheel assembly to move in an axial direction. A mounting hole is provided on the nut mounting seat, and a ball nut is embedded in the mounting hole; the grinding wheel assembly is fixed to one side of the nut mounting seat, and the grinding wheel assembly is respectively connected to the first driving assembly and the second driving assembly in a transmission manner.

2. The rubber pad trimming and automatic compensation device according to claim 1 is characterized in that: The grinding wheel assembly includes a grinding wheel and a grinding wheel rotating plate. The outer side of the grinding wheel is provided with a protective cover, and the grinding wheel is arranged perpendicular to the direction of the die cutting knife group. A first guide assembly is arranged between the grinding wheel rotating plate and the nut mounting seat, and the grinding wheel rotating plate is slidably connected to the first guide assembly.

3. The rubber pad trimming and automatic compensation device according to claim 1, characterized in that: The first driving assembly includes a first servo motor, a first planetary reducer and a first motor mounting seat, wherein the first motor mounting seat is fixed between the nut mounting seat and the protective cover; the output end of the first servo motor is transmission-connected to the first planetary reducer, a plurality of ball bearings are sleeved on the output shaft of the first planetary reducer, and the output shaft of the first planetary reducer passes through the mounting hole and is rotationally connected to the grinding wheel.

4. The rubber pad trimming and automatic compensation device according to claim 1, characterized in that: The second driving assembly includes a second servo motor, a second planetary reducer, a coupling sleeve, and a second motor mounting seat. The second motor mounting seat is fixedly connected to one side of the grinding wheel rotating plate, and an induction bracket is connected between the second motor mounting seat and the nut mounting seat; the output end of the second servo motor is transmission connected to the second planetary reducer, the coupling sleeve is arranged on the output shaft of the second planetary reducer, and one end of the coupling sleeve is transmission connected to a lifting transmission screw, and the lifting transmission screw is threadedly connected to the ball nut.

5. The rubber pad trimming and automatic compensation device according to claim 2, characterized in that: The first guide assembly includes a first linear slide rail and a first linear slider. The first linear slide rail is arranged along the vertical direction of the nut mounting seat, and the first linear slide rail is slidably connected to the first linear slider. There are multiple first linear sliders, and one side of the multiple first linear sliders is fixedly connected to the grinding wheel rotating plate.

6. The rubber pad trimming and automatic compensation device according to claim 1, characterized in that: The nut mounting seat has a Z-shaped structure, and a second guide assembly is arranged on one end of the nut mounting seat close to the first driving assembly, and the second guide assembly includes a slider mounting plate, a second linear slide rail and a second linear slider; the slider mounting plate is fixedly connected to the nut mounting seat; the second linear slide rail is arranged parallel to the second linear slider in a horizontal direction; a plurality of second linear sliders are arranged, and the plurality of second linear sliders are fixedly connected to the slider mounting plate.

7. The rubber pad trimming and automatic compensation device according to claim 1, characterized in that: A rubber pad is sleeved on the outer surface of the first rotating shaft; a cutting wheel is sleeved on the outer surface of the second rotating shaft, and a plurality of knife grooves for installing cutting blades are circumferentially distributed on the outer surface of the cutting wheel; when the second rotating shaft drives the cutting blade in the knife groove to rotate, the cutting blade abuts against the rubber pad during the rotation process.

8. The rubber pad trimming and automatic compensation device according to claim 1, characterized in that: The automatic compensator adopts a mean encoder, which is installed on the frame and connected to the grinding mechanism and the die-cutting knife group through electrical signals respectively. After the rubber pad is flattened by the grinding mechanism, the mean encoder automatically compensates and adjusts the rotation speed of the second rotating shaft to keep the rotation speed of the first rotating shaft and the second rotating shaft the same.

9. The rubber pad trimming and automatic compensation device according to claim 1, characterized in that: The first translation mechanism includes a first horizontal screw rod, a first nut seat and a third servo motor. Both ends of the first horizontal screw rod are fixed on the frame, and the first horizontal screw rod is located above the first rotating shaft; one end of the first horizontal screw rod is meshed with the gear set for transmission, and the other end is connected to the third servo motor for transmission; the first nut seat is threadedly connected to the first horizontal screw rod.

10. The rubber pad trimming and automatic compensation device according to claim 1, characterized in that: The second translation mechanism includes a second horizontal screw rod, a second nut seat and a fourth servo motor. Both ends of the second horizontal screw rod are fixed on the frame, and the second horizontal screw rod is located above the second rotating shaft; one end of the second horizontal screw rod is meshed with the gear set for transmission, and the other end is connected to the fourth servo motor for transmission; the second nut seat is threadedly connected to the first horizontal screw rod.

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