Honeycomb paper stretching machine

Abstract

The present invention discloses a honeycomb paper stretching machine that solves the problems of easy breakage and poor stretching quality that occur when electric honeycomb paper stretching machines use roller stretching. A raw material roll mounting portion, an eccentric roller, a steering roller, a material push assembly, a stretching mechanism, an suction assembly, and a steering cage roller are sequentially arranged along the stretching path of the raw paper. During the stretching process, a first servo motor drives the raw paper at a constant speed V1. The clamping assembly horizontally clamps the honeycomb paper across the width of the raw paper and, driven by a second servo motor in a linear sliding assembly, vertically stretches the clamped honeycomb paper from top to bottom. This stretching process has a set stretching stroke and stretching speed V2 in the height direction. During this stretching process, the stretching speed V2 of the stretching mechanism is matched with the feed speed V1 of the material push assembly. This speed matching is set according to the stretching parameters of the raw paper. This equipment has high stretching accuracy and stability, and is more stable and precise than traditional roller stretching.

Description

Technical Field

[0001] The invention relates to a honeycomb paper stretching machine, which is a mechanical equipment for stretching and forming honeycomb paper, and is a special equipment for honeycomb paper stretching in the packaging equipment segment. Background Art

[0002] Honeycomb paper is an emerging packaging material. Because it conforms to the concept of green and environmentally friendly development, it has been widely used in the packaging industry in recent years, especially as a cushioning material in small packages.

[0003] The industry is currently promoting specialized honeycomb paper stretching equipment for applications such as packaging small packages. Conventional honeycomb paper stretching equipment can be divided into manual stretchers and electric stretchers. The advantages and disadvantages of manual and electric stretchers are discussed below.

[0004] A manual stretching machine, as disclosed in the technical documentation of CN214359207U, comprises a bracket, a friction element, and a resistance device. The friction element is fixed to the bracket, and the inner wall of the hollow paper tube of the packaging roll presses against the friction element. The resistance device is connected to the bracket and acts on one end of the hollow paper tube of the packaging roll. The bracket is provided with a support foot. The machine utilizes the weight of the packaging roll and the resistance device to increase the damping of the packaging roll's rotation. Throughout the packaging process, the packaging operator can unroll each roll with a relatively constant pulling force. The resistance device is used to adjust the tension adaptation zone, adapting to different packaging sheet sizes and unrolling the roll with a relatively constant pulling force. This manual stretching machine requires adjusting the resistance to match the stretching force, which is inconvenient to operate and has low precision. Furthermore, as it is manually operated and non-standardized, stretching quality is difficult to ensure, and there is a risk of tearing. Furthermore, it requires high product precision, and packaging speed is affected by products of varying sizes. In addition, due to the different honeycomb paper materials (physical properties have errors), the performance and stability of the manual stretching machine are low, and its applicability is relatively narrow.

[0005] An automatic stretching machine, as disclosed in the technical documentation of CN221479011U, comprises a machine body, a pair of expansion rollers, and a first guide bar. The expansion rollers are capable of stretching the honeycomb paper into a three-dimensional shape. Because the first guide bar is located downstream of the expansion rollers and extends into a first gap on the expansion rollers, after the honeycomb paper passes through the expansion rollers, the first guide bar guides the paper downstream. The first guide bar prevents the honeycomb paper from wrapping around the expansion rollers, ensuring smooth downstream transport of the formed honeycomb paper. This automatic stretching machine generates noise when operated for extended periods, requires constant adjustment of the damping component to achieve a constant damping output, and can cause the stretching module to slip and fail to achieve the desired honeycomb shape when the resistance is high. The stretching process can easily deviate, requiring machine downtime for adjustment and correction. Furthermore, the stretched honeycomb paper has a 3D shape, and roller-type stretching can disrupt the three-dimensional form of the paper, causing partial damage to the three-dimensional structure. This, in turn, results in lower quality and reduced cushioning effectiveness.

[0006] The traditional electric honeycomb paper stretching machine needs to manually feed the honeycomb paper into the stretching machine when feeding, which is prone to safety accidents. In addition, the feeding speed after stretching is slow and the efficiency is low. Summary of the Invention

[0007] In order to solve the deficiencies of the prior art, the present invention provides a honeycomb paper stretching machine, which is an electric honeycomb paper stretching device in the bionic sense, and is used to solve the problems of easy breakage and poor stretching uniformity caused by roller stretching in the existing electric honeycomb paper stretching machine.

[0008] The technical solution adopted by the present invention to solve the technical problem is:

[0009] The honeycomb paper stretching machine includes a frame and a stretching mechanism. A raw material roll mounting portion, an eccentric roller, a steering roller, a pushing material assembly, a stretching mechanism, an suction assembly, and a steering cage roller are sequentially arranged on the frame along the stretching path of the raw material paper. The machine is characterized in that: the pushing material assembly includes a pair of fixed rollers and a pressure roller arranged parallel to each other and rotating in opposite directions. A No. 1 servo motor drives the fixed roller to move and pushes the raw material paper clamped between the two rollers at a constant feeding speed V1; below the pushing material assembly are the stretching mechanism and the suction assembly in sequence, the stretching mechanism includes a clamping assembly and a linear sliding assembly, long windows are provided on the two side panels of the frame, and a vertically arranged linear sliding assembly is installed on the outside, the clamping assembly is mechanically connected to the linear sliding assembly and has a downward stretching stroke and an upward return stroke driven by the linear sliding assembly, the stretching speed of the stretching mechanism and the feeding speed of the pushing material assembly are speed matched during the stretching stroke, and the speed matching is set according to the stretching parameters of the raw material paper.

[0010] Furthermore, the clamping assembly of the travel switch clamps the honeycomb paper horizontally in the width direction across the raw material paper, and the linear sliding assembly vertically stretches the clamped honeycomb paper from top to bottom under the drive of the second servo motor.

[0011] Furthermore, the clamping assembly includes a clamping rod, a rocker arm, a worm and a micro reduction motor. A pair of rocker arms are symmetrically mechanically connected on the mounting plate. The two rocker arms are meshed with the worm and have an opening and closing action under the drive of the micro reduction motor. The clamping rod is installed at the open opening and closing end of the rocker arm. When the micro reduction motor rotates forward, the two rocker arms close and drive the clamping rod at the upper end of the rocker arm to close and clamp the honeycomb paper passing through the middle. Conversely, the micro reduction motor reverses, the two rocker arms open and drive the clamping rod to release the honeycomb paper.

[0012] Furthermore, the main body core of the clamping rod is a steel rod or a steel tube, and is composited with a rubber layer on the outside to form a quadrangular prism or triangular prism structure.

[0013] Furthermore, the mounting parts at both ends of the clamping rod are provided with nylon sleeves, alloy sleeves, springs and nuts in sequence from the shaft shoulder to the outside, wherein the inner side of the clamping rod abuts against the inner wall of the side plate through the nylon sleeve, and the outer side abuts against the side plate through the spring, and the outer end of the spring is tightened by a nut, and the nut is mechanically fixed to the thread on the clamping rod.

[0014] Furthermore, the linear sliding assembly includes a linear slide rail, a drive device and a mounting plate, wherein the mounting plate is fixedly connected to the linear slide rail and mechanically connected to the drive device, and travel switches for constraining the highest and lowest limit positions of the mounting plate are respectively provided at the high and low points of the travel of the mounting plate.

[0015] Furthermore, the pressure roller and the fixed roller are mechanically matched by a pair of gears installed at the ends of the rollers and meshing with each other. The fixed roller is assembled on the frame with only rotational freedom and is connected to the No. 1 servo motor at the end through mechanical transmission. The two ends of the pressure roller are rotatably mounted on the horizontal sliding plate, and the horizontal sliding plate is slidably mounted in the sliding groove of the side vertical plate, and a tightening bolt for adjusting the gap between the fixed roller and the pressure roller is provided between the side vertical plate and the horizontal sliding plate.

[0016] Furthermore, a bevel gear set is installed on the outer end of the tightening bolt, and the bevel gear sets on both sides are mechanically connected through a long shaft, and the long shaft synchronously drives the bevel gear sets on the side vertical plates on both sides.

[0017] Furthermore, the attraction component is composed of a pair of electromagnetic attraction components that are opposite to each other and symmetrically arranged, wherein the ends of the two electromagnetic attraction components are fixed to the side vertical plates, and the electromagnetic attraction component includes an outer shell, an electromagnet module, a compression spring and a movable push plate, wherein the electromagnet module and the compression spring are installed between the movable push plate and the inner wall of the outer shell, wherein the electromagnet module and the compression spring are multiple and arranged at intervals from each other, and when the electromagnet module is energized, the movable push plate retracts inward, and conversely, when the electromagnet module is de-energized, the two movable push plates pop outward under the action of the compression spring, thereby realizing the clamping of the honeycomb paper by the attraction component.

[0018] Furthermore, both ends of the eccentric roller have eccentrically arranged bearing mounting parts, and the two ends of the eccentric roller are mounted on the side vertical plates through bearings, and the outer end of the eccentric roller extends to the outside of the side vertical plates and is mechanically connected to the reduction motor. During the process of the reduction motor driving the eccentric roller to rotate, the raw paper is in an oscillating state, and the oscillation amplitude is in the millimeter level.

[0019] Furthermore, a complete stretching process of the honeycomb paper stretching machine is as follows: in the initial state, the material pushing component stops pushing the material, and the suction component is in a released state, then, the clamping component runs to the highest point and triggers the travel switch at the highest point to clamp the honeycomb paper, after clamping is completed, the material pushing component and the linear sliding component are started synchronously, and the speed ratio of the two is operated according to the set speed, and the stretched raw paper is stretched in this process, when the clamping component moves to the lowest point, the travel switch at the lowest point is triggered, under the control of the electronic control circuit, the material pushing component and the linear sliding component stop synchronously, and after a short delay, the suction component is attracted, and at the same time, the clamping component releases, and then the linear sliding component drives the clamping component to return quickly, when the linear sliding component moves to the highest point and triggers the travel switch at the highest point, under the control of the electronic control circuit, the suction component releases the honeycomb paper below, and the clamping component clamps the honeycomb paper.

[0020] The beneficial effects of the present invention are:

[0021] The equipment has a high degree of automation. Through the stable feeding of the pushing material component and the coordination of the four actions and speeds of the stretching mechanism, it can set and execute actions according to the stretching rate (the effective length of the raw paper per unit length after stretching). No human intervention is required throughout the process. In addition, an electromagnetic attraction component is further set at the bottom to assist the stretching mechanism in temporarily fixing the honeycomb paper during the return process (to avoid shaking of the honeycomb paper).

[0022] This equipment has high stretching accuracy and stability. The traditional stick-type stretching mechanism is improved into a clamping-type stretching mechanism. The clamping-type stretching mechanism of the core mechanism stretches the raw paper from top to bottom, which is used to simulate the stretching action of both hands in biomimetics. It is combined with the constant pushing of the material by the servo motor control. During the stretching process, the linear speed of stretching is constant, and the feeding speed is also constant. Therefore, stable feeding and stable stretching ratio can be formed. It is more stable (the stretching roller is prone to slipping) and more accurate (the stretching roller causes damage to the honeycomb paper) than the traditional roller stretching. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a stereogram of the invention, showing a panoramic state.

[0024] Figure 2 It is a side view of the present invention.

[0025] Figure 3 It is a longitudinal full sectional view of the invention.

[0026] Figure 4 For the three-dimensional view of the invention, the protective plate was removed for display.

[0027] Figure 5 for Figure 4 side view.

[0028] Figure 6 for Figure 4 A full longitudinal section view of .

[0029] Figure 7 This is a display of the return partial structure of the stretching mechanism.

[0030] Figure 8 For display of side panels.

[0031] Figure 9 This is a three-dimensional diagram of a rocker arm, showing the three-dimensional structure of one of the rocker arms.

[0032] Figure 10 This is a three-dimensional diagram of a rocker arm, showing the three-dimensional structure of another rocker arm.

[0033] Figure 11 It is the three-dimensional structure of the steering cage roller.

[0034] Figure 12 A perspective view of the clamping rod showing a detail of one end.

[0035] Figure 13 A three-dimensional image of the electromagnet module, showing partial details of one end.

[0036] Figure 14 This is an end view of the electromagnet module.

[0037] Figure 15 This is a cross-sectional three-dimensional perspective display of the present invention, schematically showing the process of raw material paper from initial stage to stretching.

[0038] Figure 16 This shows the morphological changes of raw paper during the stretching process.

[0039] In the picture:

[0040] 100, side plate; 110, aluminum alloy profile; 120, slot; 130, long window; 140, protective side plate; 200, pusher assembly; 210, fixed roller; 211, servo motor No. 1; 220, pressure roller; 221, horizontal sliding plate; 222, Z-shaped pressure block; 223, tightening bolt; 300, clamping assembly; 310, rocker arm; 311, worm gear; 312, shaft hole; 320, clamping rod; 321, nylon sleeve; 322, alloy bushing; 323, spring; 324 , nut; 330, worm; 340, micro reduction motor; 400, linear sliding assembly; 410, linear slide rail; 420, mounting plate; 430, limit switch; 440, synchronous belt drive mechanism; 441, No. 2 servo motor; 500, suction assembly; 510, electromagnet module; 520, compression spring; 530, movable push plate; 540, housing; 600, raw material roll; 610, raw material paper; 620, eccentric roller; 630, steering roller; 640, honeycomb paper; 650, steering cage roller. DETAILED DESCRIPTION

[0041] In view of the problems and shortcomings described in the above background technology, this embodiment will adopt the following methods to solve them.

[0042] This embodiment introduces a newly developed honeycomb paper 640 stretching machine. The machine's frame consists of two side panels 100 and an aluminum alloy profile 110 (beam) that mechanically connects and assembles the two side panels 100. Specifically, the side panels 100 have an inverted T-shaped profile and are constructed from carbon steel or aluminum alloy plates with a thickness of at least 1 cm. Mounting points for various functional components are formed on the side panels 100 through CNC machining. This structure offers structural stability and a low overall weight, making it suitable for use in the express delivery and parcel delivery industry. For example, it can be placed on a table for immediate use.

[0043] Furthermore, at least four aluminum alloy profiles 110 are provided between the two side panels 100 to form a plurality of beams connecting the left and right side panels 100. Figure 15 The figure systematically shows the configuration of six aluminum alloy profiles 110. In this embodiment, the length of the aluminum alloy profiles 110 determines the width of the stretched honeycomb paper 640, that is, it can meet the needs of wide honeycomb paper 640.

[0044] In the attached Figure 1 To the attached Figure 15 In the series of diagrams, the coordinate reference is set, with the user as the reference system, the end closest to the user as the front end, and the opposite end as the rear end. Correspondingly, the left and right directions and the up and down directions are defined with the user's line of sight toward the device as a reference.

[0045] This embodiment is described along the path from the raw paper 610 to the finished product (honeycomb paper 640 ). This description method is conducive to clear logic and allows the public to understand the implementation process of this embodiment along this line of thought.

[0046] First, there is a raw material roll 600, which is obtained by purchasing. The raw material roll 600 is wound with raw material paper 610, and the raw material paper 610 has a slit cut. In the raw material state, it is in a non-stretched state. In the non-stretched state, the raw material paper 610 is a two-dimensional plane structure.

[0047] In one preferred embodiment, a nylon sleeve (not shown) is placed on each end of the reel of the stock roll 600. This sleeve effectively improves lubrication during rotation (the sleeve is self-lubricating). Accordingly, the side panels 100 are provided with slots 120, which are angled and designed to facilitate quick placement of the stock roll 600. Specifically, the sleeves are placed on each end of the reel and slide into the slots 120, forming a flexible connection. This ensures that the stock roll 600 remains stable during the unwinding of the stock paper 610.

[0048] Furthermore, the nylon sleeve has an I-shaped cross section.

[0049] The raw material roll 600 is wrapped with raw material paper 610 with a slit (exemplarily raw material paper 610). The raw material paper 610 passes through the eccentric roller 620 and the steering roller 630 and enters the pushing material component 200. The function of the pushing material component 200 is to provide a constant rate of raw material paper 610 during the stretching process, that is, the pushing material component 200 is used as the clamping and active feeding origin, marked as point A, to supply the raw material paper 610 at a uniform and stable speed. The speed of the pushing material is constant at V1 under the precise control of the No. 1 servo motor 211.

[0050] Definition: Prior to the pusher assembly 200, the paper is in an unstretched state, consisting of raw paper 610, with a two-dimensional planar structure. The paper used in subsequent processes after the pusher assembly 200 is stretched, forming honeycomb paper 640. Honeycomb paper 640 is stretched to create a three-dimensional structure with a 3D effect, allowing for impulse wrapping of cushioning items.

[0051] In this embodiment, the eccentric roller 620 and the steering roller 630 can rotate 360 ​​degrees. The difference is that the eccentric roller 620 is eccentrically arranged relative to the rotation axis, and the number of eccentric rollers 620 is one, and the number of steering rollers 630 can be set as needed, and of course is not limited to two or one.

[0052] The eccentric roller 620 and the steering roller 630 are preferably stainless steel rollers with relatively high surface smoothness. The stainless steel rollers have better sliding performance, that is, the raw paper 610 can slide on the surface of the stainless steel rollers and achieve auxiliary steering without causing damage to the raw paper 610.

[0053] A preferred installation method is that the eccentric roller 620 is a stainless steel roller with eccentric bearing mounting parts at both ends and is installed on the side plate 100 by installing the bearing assembly. The outer end of the eccentric roller 620 extends to the outside of the side plate 100 and is mechanically connected to a reduction motor ( Figure 1 The eccentric roller 620 is driven by a reduction motor to rotate eccentrically. During the rotation, the raw paper 610 is in a small oscillation state with an oscillation amplitude of millimeter level, which is conducive to the unwinding of the raw paper roll 600.

[0054] In this embodiment, the raw material paper 610 in the raw material roll 600 is slit kraft paper.

[0055] Optimally, the eccentric roller 620 rotates in a clockwise direction, that is, the raw material paper 610 located between the eccentric roller 620 and the raw material roll 600 is in a slightly oscillating state through clockwise rotation. Usually, the amplitude of the oscillation is in the millimeter level, for example, 1 mm, so that the raw material roll 600 can be unwound smoothly, and it also has a steering effect on the raw material paper 610.

[0056] Furthermore, the steering roller 630 is a non-eccentric circular roller without power, which is installed through a bearing and can rotate freely to achieve the steering of the raw paper 610, but has no ability to adjust the tension of the raw paper 610.

[0057] The pusher assembly 200 in this embodiment is a functional component that provides controlled, quantitative, and active feeding. It comprises a pair of rollers that rotate in opposite directions. The rollers are arranged horizontally, forming a clamping structure in between that actively feeds the paper stock 610. The two rollers are arranged parallel to each other, with an adjustable spacing between them. Both rollers are made of the same material and diameter. Specifically, for ease of distinction, the two rollers are designated as a fixed roller 210 and a pressure roller 220. The fixed roller 210 is mounted on the side plate 100 at both ends via bearing assemblies, meaning that the fixed roller 210 has only rotational freedom. The two ends of the pressure roller 220 are installed on a horizontal sliding plate 221 through a bearing assembly. The two horizontal sliding plates 221 can slide in the horizontal direction. They are installed in the sliding groove formed by the Z-shaped pressure block 222 and the side plate 100 and are constrained. That is to say, the pressure roller 220 has the freedom of rotation and the freedom of adjusting the position in the horizontal direction. The horizontal adjustment process realizes the adjustment of the gap between the pressure roller 220 and the fixed roller 210. The adjustment is achieved through a tightening bolt 223. Specifically, the tightening bolt 223 is used to adjust between the installation points on the side plate 100 of the above-mentioned horizontal sliding plate 221, that is, a tightening bolt 223 is installed at the installation point of the side plate 100. By adjusting the tightening bolt 223, the distance between the pressure roller 220 and the fixed roller 210 is adjusted, and the pressing force of the two rollers on the raw paper 610 is adjusted. The purpose of the adjustment is to keep the material from slipping and the feeding stable during the pushing process. The matching point of the two rollers is the above-mentioned point A, and finally the clamping force between the two rollers is adjusted. The horizontal adjustment between the two rollers is slight, mainly based on pressure adjustment, and its adjustment range is in the millimeter level or a number less than 1 mm, generally less than 1 mm, such as 0.5 mm.

[0058] Furthermore, the two rollers rotate synchronously and in opposite directions to feed the raw paper 610. Specifically, a pair of meshing gears are provided on the two rollers, and this meshing enables the two rollers to rotate in opposite directions. It should be understood that the teeth of the two meshing gears have a height that fully meets the aforementioned millimeter-level horizontal adjustment dimensional requirements. An extension portion is provided at one end of the fixed roller 210 and is mounted with a synchronous pulley. The synchronous pulley is driven by a servo motor 211. Specifically, the servo motor 211 is mounted on the side plate 100 and drives the fixed roller 210 and the pressure roller 220 to rotate synchronously and in opposite directions via a synchronous belt, continuously and stably pushing the raw paper 610 into the downward space.

[0059] In another preferred embodiment, a bevel gear and a bevel gear set are installed on the outer end of the above-mentioned tightening bolt 223, and a through long shaft is used to realize the synchronous drive of the bevel gear set on the side vertical plates 100 on both sides. The drive can be realized by a crank extending from the outside of the long shaft, that is, the horizontal sliding plates 221 on the side vertical plates 100 on both sides are synchronously adjusted by shaking the crank, thereby realizing rapid adjustment of the clamping force between the pressure roller 220 and the fixed roller 210.

[0060] Furthermore, the pressure roller 220 and fixed roller 210 are steel-plastic composite rollers. Specifically, the rollers are composed of a steel roller and a plastic layer provided on the roller surface. The plastic layer can clamp the raw paper 610 passing through, effectively preventing it from sliding. In other words, at point A, anti-slip clamping and active feeding are achieved.

[0061] Directly below the above-mentioned pushing material component 200 is a stretching mechanism. Specifically, the stretching mechanism is used to clamp in the width direction across the raw material paper 610 and stretch it at a constant speed from top to bottom. The stretching has a set stretching stroke in the height direction, and each stroke stretches once. The speed of the stretching process is reasonably matched with the feeding speed of the pushing material component 200. The so-called reasonable matching is set according to the stretching parameters of the raw material paper 610. For example, when the ratio of the length of the raw material paper 610 before and after stretching is 1:2, the ratio of the active feeding speed (the linear speed at point A, marked as speed V1) to the stretching speed (the speed at point B, marked as speed V2) is 1:2, that is, the feeding speed and the stretching speed are carried out in proportion to achieve proportional speed matching. During the stretching process, the stretched honeycomb paper 640 has a significant reduction in width. Figure 16 ,exist Figure 16 In the figure, L1 is the stretching section and L2 is the forming section. The two sections are located between the above-mentioned points A and B, and there is no obvious dividing line.

[0062] The stretching mechanism includes a clamping assembly 300 and a linear sliding assembly 400, wherein a pair of linear sliding assemblies 400 are respectively installed on the outer sides of the two side vertical plates 100, and two vertically arranged long windows 130 are correspondingly provided on the two side vertical plates 100. The long windows 130 are also the avoidance windows for the vertical sliding of the clamping assembly 300. The linear sliding assembly 400 includes a linear slide rail 410 and a mounting plate 420, wherein the linear slide rails 410 are arranged on both sides of the long window 130, one on the left and one on the right. , and a mounting plate 420 is mounted on the linear slide 410. The mounting plate 420 is a rectangular steel plate that spans the outside of the long window 130 and is fixed to the slider on the linear slide 410. After installation, the mounting plate 420 slides along the vertical direction of the long window 130. A travel switch 430 is respectively provided at the highest and lowest points of the mounting plate 420, corresponding to the highest and lowest points of the mounting plate 420, for detecting the extreme positions of the highest and lowest points of the mounting plate 420. A synchronous belt drive mechanism 440 is provided on one side of the long window 130. Specifically, a synchronous belt and its synchronous pulleys are mounted on the side vertical plate 100, and a triangular synchronous belt drive mechanism 440 is formed by three synchronous pulleys. The synchronous belt is mechanically fixed to the mounting plate 420, for example, by rivets. One of the three synchronous pulleys is mechanically connected to the second servo motor 441 via a coupling. Driven by the second servo motor 441, the mounting plate 420 reciprocates within the travel range defined by the two limit switches 430. As will be readily understood, this movement inevitably drives the clamping assembly 300 mounted on the mounting plate 420 to synchronously move up and down. This movement, in the device, utilizes a biomimetic design that simulates the action of two hands stretching the honeycomb paper 640 from top to bottom. The clamping rod 320 in the clamping assembly 300 evenly grips the honeycomb paper 640, providing a more perfect gripping area and gripping effect than a manual hand (fingers acting as the force). Furthermore, the servo motor in this technology applies a more even force when driving the mounting plate 420 from top to bottom, effectively preventing the breakage of the honeycomb paper 640 caused by uneven force during manual stretching.

[0063] Furthermore, the travel switch 430 is a magnetic switch, and the mounting plate 420 is an ordinary carbon steel plate.

[0064] Compared with the traditional roller-type stretching mechanism, this technology has the advantages of constant clamping position and smooth stretching process, and is more stable than the stretching process of the roller-type stretching mechanism.

[0065] A pair of symmetrical rocker arms 310 are mounted on the mounting plate 420. The structure of the rocker arms 310 is shown in FIG. Figure 9 and Figure 10 The rocker arm 310 is generally arc-shaped, with a worm gear 311 welded to one end. Specifically, the worm gear 311 is partially cut away and welded to one end of the rocker arm 310, forming a portion of the rocker arm 310. Specifically, the lower end of the rocker arm 310 has partial teeth, more specifically, partial worm gear teeth. The worm gear 311 is mechanically mounted to the mounting plate 420 via an axle. A shaft hole 312 for mounting the clamping rod 320 is provided at the other end of the rocker arm 310, allowing for mechanical mounting of the clamping rod 320.

[0066] The teeth on the worm wheels 311 of the two rocker arms 310 are synchronously meshed through a worm 330, which is driven by a micro-reduction motor 340 via a coupling. The micro-reduction motor 340 is fixed to the mounting plate 420. Driven by the micro-reduction motor 340, the two rocker arms 310 are synchronously opened and closed. When the two rocker arms 310 are closed, the clamping rods 320 at the upper ends of the rocker arms 310 are driven to close. The opening and closing angles of the two rocker arms 310 are ±15° or other reasonable angles, clamping the stretched honeycomb paper 640 passing through them. Conversely, when the micro-reduction motor 340 is reversed, the two rocker arms 310 drive the clamping rods 320 to open, that is, release the honeycomb paper 640.

[0067] The clamping and releasing of the honeycomb paper 640 is achieved by controlling the forward and reverse rotation of the micro reduction motor 340 .

[0068] The clamping rod 320 , rocker arm 310 , worm 330 , and micro reduction motor 340 together constitute the clamping assembly 300 .

[0069] Preferably, the above-mentioned clamping rod 320 adopts the following structural design, the inner core of the main body of the clamping rod 320 is a steel rod or a steel tube, and the outer composite rubber layer forms a quadrangular prism or triangular prism structure, and the two ends of the clamping rod 320 are mounting parts, which have a shoulder, and a nylon sleeve 321, an alloy sleeve 322, a spring 323 and a nut 324 are arranged in sequence from the shoulder to the outside, wherein the inner side of the clamping rod 320 is abutted against the inner wall of the side plate 100 through the nylon sleeve 321, and the outer side is abutted against it through the spring 323, and the outer end of the spring 323 is tightened by the nut 324, and the nut 324 is mechanically installed on the mounting part of the above-mentioned clamping rod 320 through a threaded connection. Correspondingly, the clamping rod 320, partially between the nylon sleeve 321 and the spring 323, is movably engaged with the side plate 100 via the alloy sleeve 322. It is easy to understand that by adjusting the length of the nut 324 threaded onto the mounting portion, the deformation of the spring 323 can be adjusted, thereby adjusting the rotational damping of the clamping rod 320. Adjusting the rotational damping of the clamping rod 320 in this embodiment is of positive significance for ensuring a stable clamping effect of the clamping rod 320.

[0070] The clamping rod 320 in this embodiment is a prism rather than a cylinder, which can effectively increase the clamping area with the honeycomb paper 640, that is, form a planar clamping, effectively increase the clamping area, and when the prismatic structure is in a clamped state, during the stretching process of the honeycomb paper 640, the prismatic structure is not easy to flip or rotate, thereby avoiding the phenomenon of clamping failure.

[0071] For easy identification, the clamping point of the pair of clamping rods 320 on the honeycomb paper 640 is marked as B, and the point B is also the traction point for stretching and traction.

[0072] In this embodiment, the stretching process is controllable by matching the speed of the stretching mechanism and the pushing material assembly 200. The stretching process is smooth, uniform, stable and does not slip, thereby effectively improving the quality of stretching. In this process, the problem of the honeycomb paper 640 being prone to breakage during the stretching process can be effectively solved.

[0073] In the best way, the pushing material assembly 200 is located at the high point of the stretching mechanism. This design takes advantage of the natural drooping state of the honeycomb paper 640 during and after stretching, so that the return stroke (from bottom to top) of the stretching mechanism remains smooth and does not interfere with the honeycomb paper 640, avoiding the entanglement of the honeycomb paper 640.

[0074] An attraction assembly 500 is provided below the low point of the stretching mechanism. The attraction assembly 500 is preferably an electromagnetic attraction assembly. Specifically, the electromagnetic attraction assembly is composed of a pair of electromagnetic attraction assemblies arranged opposite and symmetrically to each other, wherein the ends of the two electromagnetic attraction assemblies are fixed to the side vertical plate 100 to form a stable installation. The electromagnetic attraction assembly includes a housing 540, an electromagnet module 510, a compression spring 520, and a movable push plate 530, wherein a portion of the movable push plate 530 is movably mounted in the housing 540 in a movable mechanical mounting manner, while the other portion is exposed. The two movable push plates 530 cooperate to open and close to clamp and release the honeycomb paper 640. The electromagnet module 510 and the compression spring 520 are installed between the movable push plate 530 and the inner wall of the housing 540, wherein the electromagnet module 510 and the compression spring 520 are multiple and spaced apart from each other. The movable push plate 530 in this embodiment is preferably made of iron.

[0075] When the electromagnet module 510 is energized, the movable push plate 530 retracts inward, releasing the suction assembly 500. Conversely, when the electromagnet module 510 is de-energized, the movable push plate 530 springs outward under the action of the compression spring 520, clamping the suction assembly 500 on the honeycomb paper 640. This clamping point is marked with C. This clamping point is necessary to assist the return movement of the stretching mechanism, so the clamping force of this clamping action is much smaller than the clamping force of the clamping assembly 300 in the stretching mechanism. In other words, this can be achieved using a small electromagnet module 510 and compression spring 520.

[0076] The electromagnet module 510 in this embodiment is an integrated module consisting of a coil, an iron core, and an electromagnet control board.

[0077] Furthermore, a protective side panel 140 is provided in the vertical space where the above-mentioned suction component 500, stretching mechanism and pushing material component 200 are located, that is, on the side of the equipment. The protective side panel 140 is used to provide safety protection for the mechanical action in the stretching working area.

[0078] At least one steering cage roller 650 with an anti-winding function is provided below the suction assembly 500. The so-called steering cage roller 650 is made of cylindrical stainless steel or plastic material. It has a larger outer diameter while maintaining light weight, which is conducive to the smooth passage and steering of the 3D structured honeycomb paper 640 without damaging the honeycomb paper 640. The two ends of the steering cage roller 650 are mounting portions. The two ends of the steering cage roller 650 can be freely and flexibly rotated on the two side panels 100 through bearings, for example Figure 11 As shown, in this embodiment, two sets of steering cage rollers 650 are provided for steering and discharging the honeycomb paper 640. After discharging, subsequent manual wrapping and packaging can be carried out. The so-called manual wrapping and packaging refers to the process in which the operator wraps and packs the objects to be packaged using the honeycomb paper 640.

[0079] The working process of this equipment is described in more detail below.

[0080] In the initial state, the pushing material component 200 stops feeding, and the suction component 500 is in the released state. Then, the micro reduction motor 340 drives the clamping component 300 to clamp the honeycomb paper 640 near the bottom of the pushing material component 200. After the clamping is completed, under the control of the electronic control circuit, the pushing material component 200 and the linear sliding component 400 move synchronously, and the speed ratio of the two moves according to the set speed. In this process, the raw material paper 610 is stretched. When the mounting plate 420 moves to the lowest point, the travel switch 430 at the low point position is triggered. Under the control of the electronic control circuit, the pushing material component 200 and the linear sliding component 400 stop synchronously. After a delay of 0.1 seconds, the suction component 500 The micro motor 340 drives the clamping assembly 300 to release the honeycomb paper 640, and the two clamping rods 320 are in an open state. After the opening action is completed, the linear sliding assembly 400 quickly returns. When the mounting plate 420 moves to the highest point and triggers the travel switch 430 at the highest point, under the control of the electronic control circuit, the suction assembly 500 releases the honeycomb paper 640 below, and the linear sliding assembly 400 synchronizes the micro motor to drive the clamping assembly 300 to clamp the honeycomb paper 640 near the bottom of the pushing assembly 200. The pushing assembly 200 and the linear sliding assembly 400 synchronize to perform the stretching action of the next cycle.

[0081] The process is described in detail. In actual practice, the stretching cycle is about 2 seconds, with each stretching of 0.4 meters and a stretching of about 12 meters per minute, which meets the packaging usage in general express delivery situations.

[0082] The device of this embodiment simulates the stretching process of two hands from top to bottom, uses bionic engineering to design a servo motor to drive the mounting plate 420 to stretch stably and at a constant speed from top to bottom, and uses the surface clamping relationship of the clamping component 300 to make the clamping force uniform, effectively solving the problem of uneven stretching or breakage that is prone to occur in traditional stretching equipment.

[0083] This equipment adopts a vertical design. In the stretching area, the material is fed from top to bottom. When the material is initially fed, the raw material paper 610 can easily pass through the stretching area by utilizing the gravity of the raw material paper 610. Protective side panels 140 are provided on both sides of the stretching area to avoid mechanical pinching accidents.

[0084] This equipment has a high degree of automation and the stretching process is carried out automatically.

[0085] The stretching quality of this equipment has very small fluctuations. By accurately setting the coordination relationship and speed between each action, the stability of the raw material paper 610 during the stretching process to the hexagonal honeycomb paper 640 can be guaranteed, solving the problem of breaking caused by insufficient raw material strength and processing accuracy of existing roller stretching equipment, especially domestic equipment.

[0086] The stretching mechanism in this equipment adopts top-down stretching. The stretching process is carried out under the constraints of linear guide rails on both sides, and no pulling or deviation will occur, which makes the stretched honeycomb paper have a higher consistency evaluation.

Claims

1. A honeycomb paper stretching machine, comprising a frame and a stretching mechanism, wherein a raw material roll mounting portion, an eccentric roller (620), a steering roller (630), a material pushing assembly (200), a stretching mechanism, a suction assembly (500), and a steering cage roller (650) are sequentially arranged on the frame along a stretching path of the raw material paper, characterized in that: The pushing material component (200) includes a pair of fixed rollers (210) and a pressure roller (220) that are arranged parallel to each other and rotate in opposite directions. A servo motor (211) drives the fixed roller (210) to move and push the raw material paper (610) clamped between the two rollers at a constant feeding speed. Below the pushing material component (200) are a stretching mechanism and an attraction component (500) in sequence. The stretching mechanism includes a clamping component (300) and a linear sliding component (400). Long windows are provided on two side vertical plates (100) of the frame, and a vertically arranged linear sliding component (400) is installed on the outer side. The clamping component (300) is mechanically connected to the linear sliding component (400) and has a downward stretching stroke and an upward returning stroke driven by the linear sliding component (400). During the stretching stroke, the stretching speed of the stretching mechanism is matched with the feeding speed of the pushing material component (200). The speed matching is set according to the stretching parameters of the raw material paper. The clamping assembly (300) horizontally clamps the honeycomb paper (640) in a width direction across the raw material paper (610), and the linear sliding assembly (400) vertically stretches the clamped honeycomb paper (640) from top to bottom under the drive of the second servo motor (441); The clamping assembly (300) includes a clamping rod (320), a rocker arm (310), a worm (330) and a micro-reduction motor (340). A pair of rocker arms (310) are symmetrically mechanically connected to the mounting plate (420). The two rocker arms (310) are meshed with the worm (330) and driven by the micro-reduction motor (340). The two rocker arms (310) have an opening and closing action. The clamping rod (320) is installed at the open opening and closing end of the rocker arm (310). When the micro-reduction motor (340) rotates forward, the two rocker arms (310) close and drive the clamping rod (320) at the upper end of the rocker arm (310) to close and clamp the honeycomb paper (640) passing through the middle. Conversely, when the micro-reduction motor (340) rotates reversely, the two rocker arms (310) open and drive the clamping rod (320) to release the honeycomb paper (640). The suction assembly (500) is composed of a pair of electromagnetic suction assemblies that are opposite to each other and symmetrically arranged, wherein the ends of the two electromagnetic suction assemblies are fixed to the side vertical plate (100), and the electromagnetic suction assembly includes a shell (540), an electromagnet module (510), a compression spring (520) and a movable push plate (530), wherein the electromagnet module (510) and the compression spring (520) are installed between the movable push plate (530) and the inner wall of the shell (540), wherein the electromagnet module (510) and the compression spring (520) are multiple and spaced apart from each other, and when the electromagnet module (510) is energized, the movable push plate (530) retracts inwardly, and conversely, when the electromagnet module (510) is de-energized, the two movable push plates (530) pop outwardly under the action of the compression spring (520), thereby realizing that the suction assembly (500) clamps the honeycomb paper (640).

2. The honeycomb paper stretching machine according to claim 1, characterized in that: The main body core of the clamping rod (320) is a steel rod or a steel tube, and a rubber layer is compounded on the outside to form a quadrangular prism or triangular prism structure.

3. The honeycomb paper stretching machine according to claim 2, characterized in that: The mounting portions at both ends of the clamping rod (320) are provided with a nylon sleeve (321), an alloy sleeve (322), a spring (323) and a nut (324) in sequence from the shaft shoulder outward, wherein the inner side of the clamping rod (320) abuts against the inner wall of the side plate (100) through the nylon sleeve (321), and the outer side abuts against the side plate (100) through the spring (323), and the outer end of the spring (323) is fastened by a nut (324), and the nut (324) is mechanically fixed to the thread on the clamping rod (320).

4. The honeycomb paper stretching machine according to claim 1, characterized in that: The linear sliding assembly (400) comprises a linear slide rail (410), a driving device and a mounting plate (420), wherein the mounting plate (420) is fixedly connected to the linear slide rail (410) and mechanically connected to the driving device, and travel switches (430) for constraining the highest and lowest extreme positions of the mounting plate (420) are respectively provided at the highest and lowest points of the travel of the mounting plate (420).

5. The honeycomb paper stretching machine according to claim 1, characterized in that: The pressure roller (220) and the fixed roller (210) are mechanically matched via a pair of gears mounted at the ends of the rollers and meshing with each other. The fixed roller (210) is mounted on the frame with only rotational freedom and is connected to a servo motor (211) at the end via mechanical transmission. Both ends of the pressure roller (220) are rotatably mounted on a horizontal sliding plate. The horizontal sliding plate is slidably mounted in a slide groove of the side plate (100), and a tightening bolt for adjusting the gap between the fixed roller (210) and the pressure roller (220) is provided between the side plate (100) and the horizontal sliding plate.

6. The honeycomb paper stretching machine according to claim 5, characterized in that: The outer end of the tightening bolt is mounted with a bevel gear set, and the bevel gear sets on both sides are mechanically connected via a long shaft, and the long shaft synchronously drives the bevel gear sets on the side vertical plates (100) on both sides.

7. The honeycomb paper stretching machine according to claim 1, characterized in that: Both ends of the eccentric roller (620) have eccentrically arranged bearing mounting portions. Both ends of the eccentric roller (620) are mounted on the side vertical plate (100) via bearings, and the outer end of the eccentric roller (620) extends to the outside of the side vertical plate (100) and is mechanically connected to a reduction motor. When the reduction motor drives the eccentric roller (620) to rotate, the raw paper (610) is in an oscillating state, and the oscillation amplitude is in the millimeter level.

8. The honeycomb paper stretching machine according to claim 1, 3 or 4, characterized in that: A complete stretching process of the honeycomb paper stretching machine is as follows: in the initial state, the pushing material component (200) stops pushing the material, and the suction component (500) is in a released state. Then, the clamping component (300) moves to the highest point and triggers the travel switch (430) at the highest point to clamp the honeycomb paper (640). After the clamping is completed, the pushing material component (200) and the linear sliding component (400) are started synchronously, and the speed ratio of the two is set to operate. In this process, the raw material paper (610) pushed in is stretched. When the clamping component (300) moves to the lowest point, the travel switch at the lowest point is triggered. The switch (430) is controlled by the electric control circuit, and the pushing component (200) and the linear sliding component (400) stop synchronously. After a short delay, the attracting component (500) is attracted. At the same time, the clamping component (300) is released. Then the linear sliding component (400) drives the clamping component (300) to return quickly. When the linear sliding component (400) moves to the highest point and triggers the travel switch (430) at the highest point, under the control of the electric control circuit, the attracting component (500) releases the honeycomb paper (640) below, and the clamping component (300) clamps the honeycomb paper (640).

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