Hemming device suitable for different cup wall thicknesses

Abstract

The invention provides a hemming device suitable for different cup wall thicknesses, and belongs to the technical field of paper cup processing, the device comprises a forming machine main body, a driving device, a cam disc, a connecting rod mechanism, a rotating disc and a plurality of hemming station units, and each station unit is provided with a hemming mechanism, an adjusting mechanism and an induction discharging mechanism; the upper pressing base and the hemming base are cooperatively driven by the cam disc to move oppositely to complete hemming, the adjusting mechanism drives the transmission disc through the micro motor to drive the multiple movable bases to synchronously move in the radial direction so as to adjust the diameter of the hemming groove in a stepless mode and adapt to different paper cup wall thicknesses, and the movable bases are self-locked through a tooth groove meshing structure during hemming work. The induction discharging mechanism monitors the hemming force in real time through a strain gauge sensor, the ejection assembly is driven to automatically discharge defective products when the hemming force is abnormal, rapid production changing, high-precision hemming forming, process quality online detection and automatic protection are achieved, and the paper cup production quality and the equipment intelligence level are improved.

Description

Technical Field

[0001] This invention relates to the field of paper cup processing technology, and more specifically, to a crease rolling device adapted to different cup wall thicknesses. Background Technology

[0002] Paper cups are paper containers made by mechanically processing and bonding base paper (white cardboard) made from chemical wood pulp. They are shaped like cups. Paper cups are characterized by being safe, hygienic, lightweight, and convenient. They can be used in public places, restaurants, and eateries, and are disposable items.

[0003] The paper cup manufacturing process involves many steps, with edge rolling being a crucial one. Edge rolling requires a rolling device, but traditional paper cup edge rolling devices often use fixed-size molds with non-adjustable edge contours. When producing paper cups of different wall thicknesses, the required contour dimensions for edge rolling vary, necessitating machine shutdown and mold replacement. This results in long production downtime, low changeover efficiency, and the need to maintain a large inventory of molds, increasing production costs and management burden. Furthermore, existing equipment lacks real-time quality monitoring of the edge rolling process. Anomalies such as uneven material thickness, foreign object interference, or overlapping cups are often only detected passively in subsequent processes, failing to promptly remove defective products. This affects overall quality and may damage the equipment due to overload. While some equipment uses 2D vision systems for inspection, these systems have poor volumetric accuracy, making it difficult to accurately measure distances between features on different planes in complex, dynamically changing workstations. Even if detection is possible, the signal cannot be quickly fed back to drive the adjustment mechanism for compensation. Adjustment is typically open-loop, relying on preset parameters, and cannot handle instantaneous material fluctuations or minor errors during the edge rolling process.

[0004] How to invent a crimping device that can adapt to different cup wall thicknesses to solve these problems has become an urgent problem for those skilled in the art. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a crimping device that adapts to different cup wall thicknesses, aiming to solve the problems mentioned in the background.

[0006] This invention is implemented as follows: This invention provides a crimping device adaptable to different cup wall thicknesses, comprising a forming machine body, on which a first driving device and a second driving device are provided. The output end of the second driving device is connected to a transmission shaft and a cam disk, respectively. A linkage mechanism is also connected to one side of the cam disk. A suction cup and an upper pressure seat are mounted on the linkage mechanism. A turntable is fixedly connected to the transmission shaft. Multiple crimping station units are evenly distributed in a ring on the turntable. Each crimping station unit includes: The edge-rolling mechanism is used to roll and shape the rim of paper cups; An adjustment mechanism, disposed on the hemming mechanism, is used to drive at least a portion of the hemming mechanism to move radially in order to adjust the hemming profile. The sensing unloading mechanism, associated with the edge-rolling mechanism and the adjustment mechanism, is used to sense the mechanical signals during the edge-rolling process and perform the unloading action based on the signals.

[0007] Preferably, the output end of the drive device is connected to a curling base via a transmission mechanism, and the curling base corresponds vertically to the curling station unit on the turntable during curling.

[0008] Preferably, the hemming mechanism includes a fixed seat, a forming mold sleeve, and a mounting flange. The top of the fixed seat passes through the mounting flange and is fixed to the turntable by the mounting flange and a nut. The forming mold sleeve is slidably sleeved on the fixed seat, and the forming mold sleeve and the fixed seat are elastically connected by an elastic element. The mounting flange is provided with a through hole for the upper pressure seat to pass through.

[0009] Preferably, the bottom of the forming mold sleeve is provided with an annular crimping groove for forming the crimping edge of the paper cup; the bottom of the fixing seat is provided with a conical platform for positioning the paper cup, and the forming mold sleeve is located between the mounting flange and the conical platform.

[0010] Preferably, the molding die includes a limiting plate and a plurality of movable seats distributed circumferentially thereon. The edge of the limiting plate is provided with a radially extending slide rail. The top of the movable seat is fixedly connected to a limiting slider. The movable seat is slidably engaged with the lower part of the limiting plate through the cooperation of the limiting slider and the slide rail.

[0011] Preferably, the adjustment mechanism includes a transmission disk coaxially disposed within the limiting disk and a driving component for driving the transmission disk to rotate. The transmission disk is connected to each of the movable seats in a transmission manner to drive each movable seat to move synchronously radially.

[0012] Preferably, the driving component is a micro motor fixed in a fixed base, and its output shaft is connected to a driving wheel; the fixed base has a mounting cavity for the driving wheel to move, the edge of the driving wheel has a number of teeth, and the inner side of the transmission disk has a number of tooth grooves corresponding to the teeth; the driving wheel intermittently meshes with the tooth grooves through the teeth on its periphery; the transmission disk has an arc-shaped guide groove corresponding to each movable seat; each movable seat has a limiting rod extending into the corresponding arc-shaped guide groove.

[0013] Preferably, the height of the drive wheel is greater than the height of the molding die sleeve sliding down; the teeth of the drive wheel and the grooves of the transmission disc are configured such that when the molding die sleeve is in the working position, only one tooth can engage with one groove.

[0014] Preferably, the inductive unloading mechanism includes a sensor and an ejection assembly. The sensor is mounted on a movable base and is used to detect the stress experienced during edge rolling. The ejection assembly is located in a fixed base and is used to eject the paper cup when the sensor detects an abnormal signal.

[0015] Preferably, the sensor is a strain gauge sensor attached to the outer wall of the movable seat; the ejection assembly includes a drive source, a connecting plate driven by the drive source, and a push plate fixed to the bottom of the connecting plate; the fixed seat has a receiving cavity for the connecting plate to move and an outlet for the push plate to pass through; the drive source is an electric or pneumatic push rod; the sensor is electrically connected to the drive source.

[0016] The beneficial effects of this invention are: When the forming mold sleeve is lifted out of the working position, the built-in micro motor drive wheel meshes with the transmission disk, and the rotation of the transmission disk drives all moving seats to move radially synchronously, thereby quickly changing the diameter of the crimping groove to adapt to the new wall thickness of the paper cup, reducing the changeover time from minutes to seconds, and greatly improving production flexibility and equipment utilization. The opposing movement of the crimping base and the upper pressure seat under the coordination of the cam disk, combined with the elastic element between the forming mold sleeve and the fixed seat, forms an adaptive buffer pressure system, ensuring uniform forming force. At the same time, all moving seats achieve absolutely synchronous radial movement through the forced mechanical coupling of the limit rod and the arc guide groove on the transmission disk, fundamentally eliminating the generation of elliptical or asymmetrical crimping and ensuring the roundness and consistency of the crimping contour.

[0017] The device is designed with a clever state separation and self-locking linkage mechanism. When it is in the edge rolling working state, the forming mold sleeve is pressed down and the transmission disk descends. It only maintains single-tooth contact with the drive wheel. When the huge radial force generated by edge rolling is transmitted through the moving seat-limiting rod-transmission disk, it is rigidly locked by the blocking effect of the tooth and the tooth groove, ensuring the absolute stability of the forming process. This linkage mechanism allows the precision adjustment mechanism to be physically isolated and self-locked when subjected to high pressure, avoiding impact and improving the reliability and life of the whole machine.

[0018] This invention integrates both the adjustment and detection mechanisms onto a movable base. The movable base serves as both the execution unit for forming the rolled edge profile and the sensing unit for sensing the forming stress. Strain gauge sensors attached to the movable base directly sense the rolled edge forming force, and their signals are fed back to the control system in real time. When an abnormal force signal is detected, defective products can be quickly ejected, achieving online detection and automatic scrap removal. Furthermore, the real-time mechanical signals detected by the strain gauges can not only be used to determine scrap (triggering ejection) but also provide data feedback for diameter adjustment, thereby achieving an intelligent closed loop from "detection" to "adjustment." This not only significantly reduces the scrap rate but also prevents equipment overload damage caused by severe abnormalities, improving production safety and automation levels. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rolled-edge base structure of the present invention; Figure 3 This is a schematic diagram of the drive device and transmission mechanism of the present invention; Figure 4 This is a schematic diagram of the suction cup and upper pressure seat structure of the present invention; Figure 5 This is a schematic diagram of the edge-rolling station unit structure of the present invention; Figure 6 This is a schematic cross-sectional view of the edge-rolling station unit of the present invention; Figure 7 This is a schematic diagram of the movable seat of the present invention when it is in motion; Figure 8 This is a schematic diagram of the limiting plate and movable seat structure of the present invention; Figure 9 This is a schematic diagram of the transmission disc structure of the present invention; Figure 10 This is the invention Figure 9 Enlarged structural diagram at point A in the middle; Figure 11 This is a schematic diagram of the partial explosion structure of the present invention; Figure 12 This is a schematic diagram of the tooth and tooth groove distribution structure of the present invention.

[0021] In the diagram: 1. Molding machine body; 2. Drive device one; 3. Edge rolling base; 4. Drive device two; 5. Turntable; 6. Fixed seat; 7. Limiting plate; 8. Moving seat; 9. Micro motor; 41. Cam plate; 42. Linkage mechanism; 43. Suction cup; 44. Upper pressure seat; 51. Mounting flange; 61. Receiving cavity; 62. Mounting cavity; 70. Slide rail; 71. Transmission plate; 80. Limiting slider; 81. Sensor; 82. Elastic element; 91. Drive wheel; 92. Drive source; 93. Connecting plate; 711. Arc-shaped guide groove; 712. Tooth groove; 801. Limiting rod; 911. Tooth; 931. Push plate. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1, refer to Figures 1-12 A edging device adaptable to different cup wall thicknesses includes a forming machine body 1. The forming machine body 1 is equipped with a drive device 2 and a drive device 4. The output end of the drive device 4 is connected to a transmission shaft and a cam disk 41. The cam disk 41 moves up and down with the edging base 3 through its interaction with a roller. A linkage mechanism 42 is also connected to one side of the cam disk 41. A suction cup 43 and an upper pressure seat 44 are mounted on the linkage mechanism 42. A turntable 5 is fixedly connected to the transmission shaft. Multiple edging station units are evenly distributed in a ring on the turntable 5. Each edging station unit includes: The edge-rolling mechanism is used to roll and shape the rim of paper cups; An adjustment mechanism, disposed on the hemming mechanism, is used to drive at least a portion of the hemming mechanism to move radially in order to adjust the hemming profile. The induction unloading mechanism, associated with the edge-rolling mechanism and the adjustment mechanism, is used to sense the mechanical signals during the edge-rolling process and execute the unloading action based on the signals.

[0024] Furthermore, the output end of the drive device 2 is connected to the edge-rolling base 3 via a transmission mechanism (such as a belt, gear, or linkage system; this application uses a belt), driving it to rotate. The edge-rolling base 3 corresponds vertically to the edge-rolling station unit on the turntable 5 during edge-rolling, ensuring stable support for the bottom of the paper cup during edge-rolling. The edge-rolling mechanism includes a fixed base 6, a forming mold sleeve, and a mounting flange 51. The top of the fixed base 6 passes through the mounting flange 51 and is fixed to the turntable 5 by the mounting flange 51 and a nut. The forming mold sleeve is slidably sleeved on the fixed base 6. The forming mold sleeve is elastically connected to the fixed seat 6 by an elastic element 82 (such as a spring or elastic washer). The elastic element 82 allows the forming mold sleeve to float slightly in the vertical direction to adapt to the height tolerance of the paper cup or the change of material thickness, avoiding cup mouth damage or excessively tight edge rolling caused by rigid contact. During the edge rolling process, the elastic connection allows the forming mold sleeve to be evenly pressed with the downward pressure of the upper pressure seat 44, improving the consistency of edge rolling. The mounting flange 51 is provided with a through hole for the upper pressure seat 44 to pass through. The through hole provides a precise descent path for the upper pressure seat 44 to ensure that it is aligned with the edge rolling groove and avoids bias pressure.

[0025] It should be noted that the bottom of the forming mold sleeve is provided with an annular curling groove for forming the curling edge of the paper cup. Under pressure, the cup rim material is pressed into the groove and bent along the groove shape to form a standardized curling edge. The bottom of the fixing seat 6 is provided with a conical platform for positioning the paper cup, so that the paper cup is automatically centered before curling, ensuring symmetrical curling. At the same time, the conical support can resist lateral force and prevent the paper cup from tilting during the curling process. The forming mold sleeve is located between the mounting flange 51 and the conical platform to ensure that the curling groove is always aligned with the cup rim. When the upper pressure seat 44 presses down, the force is directly applied to the cup rim through the forming mold sleeve.

[0026] In this embodiment, the paper cup is picked up by the suction cup 43 and fixed on the fixing base 6. The cup mouth is aligned with the crimping groove of the upper forming mold sleeve, and the cup bottom is initially positioned by the conical platform. The second driving device 4 drives the upper pressure seat 44 to move downward through the linkage mechanism 42. The downward pressure causes the forming mold sleeve to move down, and the cam plate 41 also drives the crimping base 3 to move upward. At the same time, the first driving device 2 drives the crimping base 3 to rotate. The crimping base 3 lifts the paper cup from the bottom up, forming a pressing force with the forming mold sleeve, pressing the cup mouth tightly into the ring of the forming mold sleeve, so that the paper cup rotates at a uniform speed during the forming process, ensuring... The cup rim is subjected to uniform force at 360 degrees, forming a smooth, seamless rolled edge. Under the pressure of the upper and lower clamps, the cup rim material is completely filled into the rolled edge groove. At this time, the elastic element 82 connecting the forming mold sleeve and the fixing seat 6 is compressed. The elastic design allows the forming mold sleeve to produce a small axial sliding, which can absorb the small fluctuations in the height of the paper cup or the thickness of the rolled edge material, preventing rigid impact from damaging the cup body. The continuous opposing pressure (the upper pressure seat 44 presses down and the rolled edge base 3 pushes up and rotates) ensures that the entire cup rim circumference obtains uniform and sufficient plastic deformation under the elastic buffer, completing a high-quality rolled edge.

[0027] After the edge curling is completed, the drive device 2 4 pulls the upper pressure seat 44 to rise and reset; at the same time, the edge curling base 3 descends and stops rotating, resetting to the waiting position. The formed paper cup is moved out of the processing area by the turntable 5, and the next station unit is rotated to the working position to start a new cycle.

[0028] Furthermore, the forming mold includes a limiting plate 7 and multiple movable seats 8 distributed along its circumference. The edge of the limiting plate 7 is provided with a radially extending slide rail 70. The top of the movable seat 8 is fixedly connected to a limiting slider 80. The movable seat 8 is slidably engaged with the lower part of the limiting plate 7 through the cooperation of the limiting slider 80 and the slide rail 70, ensuring that the movable seat 8 can only slide along a strictly radial direction without other degrees of freedom, thus ensuring the roundness of the rolled edge groove after the diameter change.

[0029] Furthermore, the adjustment mechanism includes a transmission disk 71 coaxially disposed within the limiting disk 7, and a driving member for driving the transmission disk 71 to rotate. The transmission disk 71 is connected to each movable seat 8 in a transmission manner to drive each movable seat 8 to move radially synchronously.

[0030] Furthermore, the driving component is a micro motor 9 fixed within the fixed base 6, and its output shaft is connected to a driving wheel 91; the fixed base 6 has a mounting cavity 62 for the driving wheel 91 to move within it; the edge of the driving wheel 91 has several teeth 911, and the inner side of the transmission disk 71 has several tooth grooves 712 corresponding to the teeth 911; the driving wheel 91 intermittently meshes with the tooth grooves 712 through its peripheral teeth 911; the transmission disk 71 has an arc-shaped guide groove 711 corresponding to each movable seat 8; each movable seat 8 has a corresponding arc-shaped guide groove extending into it. The guide groove 711 has a limiting rod 801; when the transmission disk 71 rotates, the side wall of the arc-shaped guide groove 711 pushes the limiting rod 801. Since the curve of the arc-shaped guide groove 711 is designed (as an eccentric arc), its force on the limiting rod 801 can be decomposed into tangential force and radial force. The tangential force is canceled out by the constraint of the slide rail 70, while the radial force drives the moving seat 8 to move radially along the slide rail 70. The limiting rods 801 on all moving seats 8 are driven by the same rotating transmission disk 71 at the same time, thus achieving completely synchronized radial movement.

[0031] It should be noted that the height of the drive wheel 91 is greater than the height of the forming mold sleeve sliding down; the teeth 911 of the drive wheel 91 and the grooves 712 of the transmission disk 71 are configured such that when the forming mold sleeve is in the working position, only one tooth 911 can engage with one groove 712. This ensures that the forming mold sleeve will not interfere with the drive wheel 91 during the sliding process. During the crimping process, the huge radial force attempts to expand the moving seat 8 outward, but this force is transmitted to the transmission disk 71 through the limit rod 801, attempting to make it rotate. However, due to the jamming of the teeth 911 and the grooves 712, the transmission disk 71 cannot rotate, thereby locking the radial position of all moving seats 8 and ensuring the absolute stability of the crimping process.

[0032] In this embodiment, when the control system determines that the paper cup specification needs to be changed (wall thickness change), the equipment runs to a specific work station or stops. The upper pressure seat 44 is raised, and the forming mold sleeve moves upward and resets under the action of the elastic element 82, disengaging from the working position. The micro motor 9 receives a pulse signal and drives the wheel 91 to rotate by a set angle (such as 30° or 45°). Since there are multiple teeth 911 on its periphery, each rotation will push the transmission disk 71 to rotate by the angle of one tooth groove 712. The transmission disk 71 rotates by a small angle, and through all the arc-shaped guide grooves 711, it simultaneously pushes all the limit rods 801, forcing all the moving seats 8 to move radially (contracting inward or expanding outward) synchronously and equidistantly along the slide rail 70, thereby changing the effective diameter of the annular edge-rolling groove they form. After the adjustment is completed, the micro motor 9 stops, and the system re-enters the self-locking stable working state. When the forming mold sleeve is pressed down to the working position again, the transmission disk 71 descends, ready to roll the edge of the new specification paper cup.

[0033] Without replacing the entire mold, the edge diameter can be adjusted within seconds via program to adapt to paper cups with different wall thicknesses (thus affecting the edge outer diameter), greatly reducing changeover time, mold inventory costs, and manual operation, thus achieving production flexibility. The intermittent meshing mechanism ensures that each adjustment is a fixed and precisely calculable micro-displacement, avoiding over-adjustment or error accumulation that may occur with continuous transmission. All moving seats 8 are directly driven by a rigid transmission disc 71, fundamentally eliminating the risk of "ellipticization" or "polygonalization" caused by multiple asynchronous drives, ensuring that the edge groove is always perfectly circular. The mechanical self-locking mechanism in the working state ensures that the adjustment mechanism is completely rigidly locked when the edge mechanism is subjected to huge forming pressure. This is more reliable, more energy-efficient, and more resistant to interference than the solution that relies on sensor feedback and servo motors to continuously provide resistance.

[0034] Example 2, refer to Figures 6-8 The induction unloading mechanism includes a sensor 81 and an ejection assembly. The sensor 81 is located on the movable seat 8 and is used to detect the stress experienced during edge rolling. The ejection assembly is located in the fixed seat 6 and is used to eject the paper cup when the sensor 81 detects an abnormal signal.

[0035] Furthermore, sensor 81 is a strain gauge sensor attached to the outer wall of the movable seat 8 (small in size and thin in thickness, it can be attached to complex surfaces without changing the original structure and strength of the movable seat 8). Sensor 81 can directly convert the micro-deformation of the surface of the object being measured into a change in resistance, thereby directly and in real time measuring the radial stress on the movable seat 8 during edge rolling, which is highly related to the physical nature of the edge rolling forming force. During the edge rolling process, the expansion force of the paper cup material on the edge rolling groove acts directly on the inner side of the movable seat 8. This force is transmitted through the movable seat 8 body and generates corresponding tensile / compressive strain on its outer wall. Attaching the sensor at this point provides the most direct signal, the least interference, and the fastest response. By installing it on each movable seat 8, multi-point monitoring can be achieved, which can more comprehensively evaluate the uniformity of the force on the edge rolling circumference. Alternatively, key points can be selected for installation (depending on the situation).

[0036] The ejection assembly includes a drive source 92, a connecting plate 93 driven by the drive source 92, and a push plate 931 fixed to the bottom of the connecting plate 93. The fixed base 6 has a receiving cavity 61 for the connecting plate 93 to move and an outlet for the push plate 931 to pass through. The connecting plate 93 transmits the linear motion of the drive source 92 and distributes it to the push plate 931. The push plate 931 passes through the outlet at the bottom of the fixed base 6 and acts directly on the inner bottom of the paper cup. The drive source 92 is an electric or pneumatic push rod. The sensor 81 is electrically connected to the drive source 92. The signal line of the sensor 81 is connected to the control system through wiring (which can be through the slip ring inside the fixed base 6 or on the turntable 5, existing technology, which will not be described in detail). The control system processes the force signal in real time and compares it with the preset normal force value range. Once an abnormality is detected, a trigger signal is immediately sent to the drive source 92.

[0037] In this embodiment, during equipment debugging or the initial stage of producing new specification paper cups, the system records the typical force signal curve (including peak value, rising slope, holding pressure value, etc.) fed back by sensor 81 during the normal and qualified product edge rolling process, and sets the upper and lower limits of the monitoring alarm threshold based on this. During normal production, the system continuously monitors this force signal in real time.

[0038] The force signal will change significantly when the following abnormal conditions occur: abnormal wall thickness (too thick): increased edge rolling resistance, force value exceeds the upper limit; missing material or broken cup mouth: edge rolling resistance decreases sharply, force value falls below the lower limit; foreign object stuck (such as paper scraps, residual glue): abnormal sharp burrs appear in the force signal; double cup overlap: extremely high resistance, force value seriously exceeds the limit; the control system immediately sends a command to the drive source 92, the pneumatic / electric push rod moves instantaneously, pushing the connecting plate 93 and the push plate 931 downward, and the push plate 931 moves from the fixed position. The outlet at the bottom of seat 6 extends to push the abnormal paper cups that are not rolled or have poor rolling from the rolling station downwards, so that they are removed from the rolling station. The ejected waste cups will fall into a special waste collection box. At the same time, the system can trigger an audible and visual alarm to prompt the operator to check the equipment or incoming materials. After the ejection action is completed, the drive source 92 retracts and the push plate 931 returns to the receiving cavity 61 at the bottom of the fixed seat 6. This does not affect the feeding and positioning of the next paper cup. After the system confirms that the unloading is completed, it can automatically enter the next work cycle.

[0039] By implementing the above settings, quality inspection is transformed from post-production sampling to real-time monitoring during the manufacturing process. Any defective cups are rejected at the forming station to prevent them from flowing into subsequent packaging processes, greatly reducing the overall scrap rate and rework costs. The elimination of frequent operator observation and manual cleaning of jammed cups reduces human intervention and safety risks, enabling the equipment to operate unattended for longer periods. The continuous force signal data detected by strain gauges can be used for monitoring and optimizing the production process. For example, by analyzing the trend of force value changes, it can not only be used to determine scrap (triggering ejection) but also provide data feedback for diameter adjustment. It can also predict problems such as mold wear and material performance fluctuations, thereby achieving an intelligent closed loop from "detection" to "adjustment" and enabling predictive maintenance.

[0040] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail. The specific model and specifications of the relevant electrical components need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in the field, so it will not be described in detail.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A crimping device suitable for different cup wall thicknesses, comprising a forming machine body (1), characterized in that, The forming machine body (1) is provided with driving device one (2) and driving device two (4), the output end of driving device two (4) is connected with transmission shaft and cam disc (41) respectively, one side of cam disc (41) is also connected with connecting rod mechanism (42), connecting rod mechanism (42) is installed with sucking disc (43) and upper pressing seat (44), transmission shaft is fixedly connected with rotating disc (5), rotating disc (5) is uniformly distributed with multiple edge rolling work position units in annular, each edge rolling work position unit comprises: Edge rolling mechanism, for edge rolling forming of paper cup mouth; Adjusting mechanism, provided on edge rolling mechanism, for driving at least part of components of edge rolling mechanism to move radially to adjust edge rolling forming profile; Induction unloading mechanism, associated with edge rolling mechanism and adjusting mechanism, for sensing mechanical signal in edge rolling process and executing unloading action based on the signal.

2. A crimping device for accommodating different cup wall thicknesses according to claim 1, characterized in that The output end of driving device one (2) is connected with edge rolling base (3) through transmission mechanism, and edge rolling base (3) corresponds to edge rolling work position unit on rotating disc (5) up and down when edge rolling.

3. A crimping device for accommodating different cup wall thicknesses according to claim 1, characterized in that The edge rolling mechanism includes fixed seat (6), forming die sleeve and mounting flange (51), the top of fixed seat (6) passes through mounting flange (51), and is fixed on rotating disc (5) through mounting flange (51) and nut;The forming die sleeve is slidably sleeved on the fixed seat (6), and the forming die sleeve and the fixed seat (6) are elastically connected through elastic element (82);The mounting flange (51) is provided with a through hole for the upper pressing seat (44) to pass through.

4. A crimping device for accommodating different cup wall thicknesses according to claim 3, wherein, The bottom of the forming die sleeve is provided with an annular edge rolling groove for edge rolling of the paper cup;The bottom of the fixed seat (6) is provided with a conical table for positioning the paper cup, and the forming die sleeve is located between the mounting flange (51) and the conical table.

5. A crimping device for accommodating different cup wall thicknesses according to claim 3, wherein, The forming die sleeve includes a limiting disc (7) and a plurality of moving seats (8) distributed along the circumference thereof, the edge of the limiting disc (7) is provided with a radially extending slide rail (70), the top of the moving seat (8) is fixedly connected with a limiting sliding block (80), and the moving seat (8) is slidably clamped below the limiting disc (7) through the cooperation of the limiting sliding block (80) and the slide rail (70).

6. A crimping device for accommodating different cup wall thicknesses according to claim 5, wherein, The adjusting mechanism includes a transmission disc (71) coaxially arranged in the limiting disc (7), and a driving element for driving the transmission disc (71) to rotate, the transmission disc (71) is in transmission connection with each moving seat (8) to drive each moving seat (8) to move radially synchronously.

7. A crimping device for accommodating different cup wall thicknesses according to claim 6, characterized in that The driving member is a micro motor (9) fixed in the fixed seat (6), and the output shaft of the micro motor (9) is connected with a driving wheel (91); the fixed seat (6) is provided with an installation cavity (62) for the driving wheel (91) to move, and the edge of the driving wheel (91) is provided with a plurality of tooth portions (911); the inner side of the transmission disc (71) is provided with a plurality of tooth grooves (712) corresponding to the tooth portions (911); the driving wheel (91) is intermittently engaged with the tooth grooves (712) through the tooth portions (911) on the periphery of the driving wheel (91); the transmission disc (71) is provided with an arc-shaped guide groove (711) corresponding to each moving seat (8); each moving seat (8) is provided with a limiting rod (801) extending into the corresponding arc-shaped guide groove (711).

8. A crimping device for accommodating different cup wall thicknesses according to claim 7, characterized in that The height of the driving wheel (91) is greater than the height of the lower slide of the forming die sleeve; the tooth portions (911) of the driving wheel (91) and the tooth grooves (712) of the transmission disc (71) are configured such that only one tooth portion (911) can be clamped into one tooth groove (712) when the forming die sleeve is in the working position.

9. A crimping device for accommodating different cup wall thicknesses according to claim 6, wherein, The induction unloading mechanism comprises an inductor (81) and an ejection assembly, the inductor (81) is arranged on the moving seat (8) and is used for detecting the stress received during the edge curling; the ejection assembly is arranged in the fixed seat (6) and is used for ejecting the paper cup when the inductor (81) detects an abnormal signal.

10. A crimping device for accommodating different cup wall thicknesses according to claim 9, wherein, The inductor (81) is a strain gauge sensor attached to the outer side wall of the moving seat (8); the ejection assembly comprises a driving source (92), a connecting plate (93) driven by the driving source (92), and a push plate (931) fixed to the bottom of the connecting plate (93); the fixed seat (6) is provided with a containing cavity (61) for the connecting plate (93) to move and an outlet for the push plate (931) to pass through; the driving source (92) is an electric or pneumatic push rod; the inductor (81) and the driving source (92) are electrically connected. The height of the driving wheel (91) is greater than the height of the lower slide of the forming die sleeve; the tooth portions (911) of the driving wheel (91) and the tooth grooves (712) of the transmission disc (71) are configured such that only one tooth portion (911) can be clamped into one tooth groove (712) when the forming die sleeve is in the working position. The induction unloading mechanism comprises an inductor (81) and an ejection assembly, the inductor (81) is arranged on the moving seat (8) and is used for detecting the stress received during the edge curling; the ejection assembly is arranged in the fixed seat (6) and is used for ejecting the paper cup when the inductor (81) detects an abnormal signal. The inductor (81) is a strain gauge sensor attached to the outer side wall of the moving seat (8); the ejection assembly comprises a driving source (92), a connecting plate (93) driven by the driving source (92), and a push plate (931) fixed to the bottom of the connecting plate (93); the fixed seat (6) is provided with a containing cavity (61) for the connecting plate (93) to move and an outlet for the push plate (931) to pass through; the driving source (92) is an electric or pneumatic push rod; the inductor (81) and the driving source (92) are electrically connected.

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