Latex supplying device and latex supplementing method

Abstract

The invention discloses a latex supply device and a latex supplementing method, and relates to the technical field of tobacco machinery, and the latex supply device comprises a latex cylinder, a rotating mechanism and a lifting mechanism; the rotating mechanism is composed of a supporting rod limited to the side wall of the device, a sleeve connected with the supporting rod in a sliding and sleeving mode, a base connected with the sleeve and a bracket with a mounting groove formed in the top, and the latex cylinder is fixed in the mounting groove. The lifting mechanism is connected with the base and the bracket. In the using process, through cooperation of rotating motion of the rotating mechanism and vertical driving of the lifting mechanism, efficient switching of the positions of the latex cylinders is achieved, operation convenience and safety are achieved at the same time, and the problems of tedious procedures and potential safety hazards of traditional manual climbing and dumping are solved.

Description

Technical Field

[0001] This application relates to the technical field of tobacco machinery, and particularly to a latex glue supply device and a glue replenishment method. Background Art

[0002] As a key bonding material in filter rod production, latex is mainly used for fixing the forming paper and tow to prevent the filter tip from coming off. Due to the physical properties of latex such as easy oxidation and condensation (the viscosity increases by 22% after being exposed to air for 30 minutes), significant thixotropy (the fluidity decreases by 35% after standing still), and inability to withstand long-distance pipeline transportation, the current production system is forced to adopt the original glue adding mode of "separate storage - manual handling - high-level dumping". This contradiction between this property and the process requirements constitutes the core technical barrier for the upgrade of filter rod production equipment.

[0003] In the ZL29 medium filter rod forming machine, the storage and supply of latex rely on an open latex tank. The latex tank is usually installed beside the upper tobacco tongue of the equipment, about 1.7 meters above the ground, and has a small capacity (about 10L). During the latex replenishment process, the operator needs to carry the latex filled in small buckets to the machine table and climb to the mouth of the glue tank with the help of a temporary platform for manual dumping. The specific process is as follows: First, the latex is filled into small buckets; second, the small buckets are carried to the vicinity of the equipment; then, the operator needs to temporarily build or move a platform under the glue tank and climb to a height of 1.7 meters above the ground for dumping. During this process, the position and floating height of the latex tank are both fixed, and it is necessary to frequently climb the platform 1.7 meters above the ground to complete the glue addition. Depending on high-intensity physical labor, not only is the latex replenishment efficiency low, but there are also safety hazards.

[0004] Therefore, this application proposes a latex glue supply device and a glue replenishment method. Among them, the latex glue supply device can change the position and floating height of the latex tank in the horizontal plane according to requirements, realizing the transformation from "manual climbing and dumping" to "low-level convenient operation", simplifying the latex replenishment process, and eliminating the safety hazards existing in manual climbing. Summary of the Invention

[0005] The main purpose of this application is to provide a latex glue supply device and a glue replenishment method, aiming to solve the technical problem of the inconvenience in the latex replenishment process caused by the fixed position and floating height of the latex tank.

[0006] To achieve the above purpose, this application provides the following technical solutions:

[0007] A latex glue supply device, applied to the ZL29 medium filter rod forming machine, includes:

[0008] A latex tank;

[0009] The rotating mechanism includes a support rod standing on one side of the ZL29 medium filter rod forming machine, a sleeve slidably sleeved on the support rod, a base connected to the sleeve, and a bracket arranged on the base; an installation groove is provided at the top of the bracket, the latex cylinder is arranged in the installation groove, and the sleeve is driven to rotate around the axis of the support rod to drive the latex cylinder to rotate around the axis of the support rod.

[0010] The lifting mechanism is respectively connected to the base and the bracket, and the lifting mechanism is driven to operate to drive the latex cylinder to move in the vertical direction.

[0011] As a further improvement of the present invention, the lifting mechanism includes: a lead screw and at least one guide rod standing on the base, and a slider connected to the side wall of the bracket; the slider is provided with a threaded hole adapted to the lead screw and at least one guide hole adapted to the guide rod in a penetrating manner, the lead screw penetrates through the threaded hole, and each guide rod penetrates through each guide hole respectively, and the lead screw is driven to rotate around its own axis to drive the latex cylinder to move along the axis of the lead screw.

[0012] As a further improvement of the present invention, the latex feeding device further includes a first driving mechanism, and the first driving mechanism includes: a first motor arranged on the base, a first driving wheel coaxially connected to the rotating shaft of the first motor, a first driven wheel coaxially connected to the lead screw, and a second transmission belt sleeved on the first driving wheel and the first driven wheel respectively, and the first motor is driven to do work to drive the first driving wheel and the first driven wheel to rotate, and further drive the lead screw to rotate around its own axis.

[0013] As a further improvement of the present invention, the latex feeding device further includes a second driving mechanism, and the second driving mechanism includes: a second motor arranged on the base, a second driving wheel coaxially connected to the rotating shaft of the second motor, a second driven wheel coaxially connected to the support rod, and a second transmission belt sleeved on the second driving wheel and the second driven wheel respectively, and the second motor is driven to do work to drive the second driving wheel and the second driven wheel to rotate, and further drive the sleeve to rotate around the axis of the support rod.

[0014] As a further improvement of the present invention, the rotating mechanism further includes a connecting plate, the connecting plate is rotatably connected to the top end of the lead screw and fixedly connected to the top end of each guide rod, one end of the connecting plate extends and is hinged to the side wall of the ZL29 medium filter rod forming machine, and the rotation axis of the connecting plate is collinear with the axis of the support rod.

[0015] As a further improvement of the present invention, the rotating mechanism further includes a fixing frame. The upper and lower ends of the support rod are respectively rotatably connected to a fixing frame, and each fixing frame is arranged on the side wall of the ZL29 medium filter rod forming machine.

[0016] As a further improvement of the present invention, the base is in a strip-shaped plate structure. The top surface of one end of the base is vertically connected to the bottom end of the sleeve, and at least one stiffening plate is arranged between the side wall of the sleeve and the top surface of the base to increase the stability between the sleeve and the base.

[0017] As a further improvement of the present invention, the latex supply device further includes a monitoring mechanism. The monitoring mechanism is provided with a pressure sensor arranged at the inner bottom of the installation groove, an angular displacement sensor and a rangefinder arranged on the base. The pressure sensor is used to detect the pressure value from the latex cylinder in real time. The angular displacement sensor is used to obtain the angular change of the latex cylinder relative to the reference position when it rotates around the axis of the support rod in real time. The rangefinder is used to measure the distance between the bottom surface of the bracket and the top surface of the base in real time.

[0018] As a further improvement of the present invention, the latex supply device further includes a central control mechanism electrically connected to the first motor, the second motor, the pressure sensor, the angular displacement sensor and the rangefinder respectively. A number of control instructions are pre-stored in the central control mechanism. The central control mechanism is used to receive and process the signals output by the pressure sensor, the angular displacement sensor and the rangefinder, and match the corresponding control instructions to control the operation of the first motor and the second motor.

[0019] A glue replenishment method applied to a latex supply device includes the following steps:

[0020] Obtain the pressure value at the bottom of the installation groove, and compare this pressure value with the preset threshold range Pmin, Pmax, where P_min is the pressure value corresponding to the anti-empty load weight (such as latex remaining amount ≤ 5%), and P_max is the pressure value corresponding to the anti-overflow weight (such as latex remaining amount ≥ 95%);

[0021] When the pressure value ≤ P_min:

[0022] a. Control the sleeve to rotate around the axis of the support rod in a first direction by a preset angle θ (θ ∈ [90°, 180°], preferably 90°), and drive the latex cylinder to completely move out of the side wall cavity of the ZL29 medium filter rod forming machine;

[0023] b. Control the lifting mechanism to drive the latex cylinder to descend to a preset height H (H = 0.5m ± 0.1m, height from the ground) to ensure that the operation position conforms to ergonomics;

[0024] c. Control to open the cover plate of the latex cylinder and prompt the operator to pour latex manually;

[0025] When the pressure value ≥ P_max, control to close the cover plate of the latex cylinder and stop the glue replenishment process.

[0026] The technical solution provided by this application may include the following beneficial effects:

[0027] During the use of this application, the support rod is fixed to the side wall of the equipment. The sleeve rotates around the axis of the support rod to drive the latex cylinder to rotate into or out of the cavity on the side wall of the equipment to the glue replenishment position. The lifting mechanism realizes vertical lifting through the cooperation of the lead screw and the guide rod with the slider, accurately adjusting the height of the latex cylinder from the ground. Through the coordination of the horizontal rotation of the rotating mechanism and the vertical movement of the lifting mechanism, the operator can complete the glue replenishment on the ground, eliminating the safety hazard of climbing the 1.7-meter platform. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is a schematic three-dimensional structure of a latex supply device Figure 1 ;

[0030] Figure 2 is a schematic three-dimensional structure of a latex supply device Figure 2 ;

[0031] Figure 3 is a schematic three-dimensional structure of a latex supply device Figure 3 ;

[0032] Reference Signs:

[0033] 1. Latex cylinder; 2. Rotating mechanism; 21. Support rod; 22. Sleeve; 23. Base; 24. Bracket; 241. Installation groove; 25. Fixed frame; 26. Stiffening plate; 27. Connecting plate; 3. Lifting mechanism; 31. Lead screw; 32. Guide rod; 33. Slider; 331. Threaded hole; 332. Guide hole; 4. First driving mechanism; 41. First motor; 42. First driving wheel; 43. First driven wheel; 44. First transmission belt; 5. Second driving mechanism; 51. Second motor; 52. Second driving wheel; 53. Second driven wheel; 54. Second transmission belt; 6. Monitoring mechanism; 61. Pressure sensor; 62. Angular displacement sensor; 63. Rangefinder. Detailed Embodiments

[0034] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0036] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or capable of communicating with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0038] In this application, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0039] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

[0040] The above are only optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the protection scope of this application.

[0041] Embodiment 1

[0042] Figure 1 An embodiment of a latex feeding device of this application is shown. Refer to Figure 1 , in this embodiment, the latex feeding device is applied to the ZL29 medium filter rod forming machine and includes: a latex cylinder 1, a rotating mechanism 2, and a lifting mechanism 3.

[0043] Among them, refer to Figure 1, the rotating mechanism 2 includes: a support rod 21, a sleeve 22, a base 23, and a bracket 24. The support rod 21 is limit - installed on the side wall of the ZL29 medium - filter rod forming machine. The sleeve 22 is slidably sleeved on the support rod 21. The base 23 is connected to the sleeve 22. The bracket 24 is arranged on the base 23. An installation groove 241 is provided at the top of the bracket 24, and the latex cylinder 1 is arranged in the installation groove 241. Driving the sleeve 22 to rotate around the axis of the support rod 21 can drive the base 23 and the bracket 24 to rotate around the axis of the support rod 21. While lifting the latex cylinder 1, it can drive the latex cylinder 1 to displace in the horizontal plane, and further drive the latex cylinder 1 to move into / out of the cavity inside the side wall of the ZL29 medium - filter rod forming machine. The lifting mechanism 3 is respectively connected to the base 23 and the bracket 24. Driving the lifting mechanism 3 to operate can drive the latex cylinder 1 to rise / fall in the vertical direction, thereby changing the height of the latex cylinder 1 from the ground. In this way, the position of the latex cylinder 1 relative to the horizontal plane and the floating height can be changed. The operator can complete the latex replenishment process on the ground, without the need to frequently climb the platform 1.7 meters above the ground, realizing the transformation from "manual climbing and pouring" to "low - position convenient operation", simplifying the latex replenishment process, and eliminating the safety hazards existing in manual climbing.

[0044] It should be noted that the side wall of the ZL29 medium - filter rod forming machine is an existing device, which is provided with a cavity structure matching the movement track of the rotating mechanism 2. This cavity is specifically a rectangular storage space formed by the depression of the side wall. Its opening direction is perpendicular to the axis of the support rod 21 and faces the rotation path of the sleeve 22. The depth and height dimensions inside the cavity are both larger than the body size of the latex cylinder 1, and the latex cylinder 1 can be completely embedded inside the cavity. A positioning buckle corresponding to the installation groove 241 of the bracket 24 is also provided at the bottom of the cavity. When the latex cylinder 1 enters the cavity, it can be secondarily fixed through the buckle to prevent displacement caused by the vibration of the equipment during operation. The rotation - lifting compound movement of the latex supply device forms a spatial cooperation relationship with this cavity structure, enabling the latex cylinder 1 to switch between the working position (embedded installation) and the glue - replenishing position (outward movement and hovering), which not only meets the low - position operation requirements but also ensures the safety of the integrated operation of the equipment.

[0045] Furthermore, referring to Figure 1 , the lifting mechanism 3 includes: a lead screw 31, a guide rod 32, and a slider 33. A lead screw 31 and at least one guide rod 32 are erected on the top surface of the base 23. The slider 33 is connected to the side wall of the bracket 24. The slider 33 is provided with a threaded hole 331 adapted to the lead screw 31 and at least one guide hole 332 adapted to the guide rod 32 through - penetrated. The lead screw 31 penetrates through the threaded hole 331, and each guide rod 32 respectively penetrates through each guide hole 332. Driving the lead screw 31 to rotate around its own axis can drive the slider 33 to move in the vertical direction, and further drive the latex cylinder 1 to rise / fall. In this way, the floating height of the latex cylinder 1 can be changed according to requirements.

[0046] Furthermore, referring toFigure 1 In addition, the rotating mechanism 2 further includes a fixing bracket 25. The upper and lower ends of the support rod 21 are respectively rotatably connected to a fixing bracket 25, and each fixing bracket 25 is disposed on the side wall of the ZL29 medium filter rod forming machine to limit the support rod 21.

[0047] Furthermore, referring to Figure 1 the base 23 is in the shape of a strip plate. The top surface of one end of the base 23 is vertically connected to the bottom end of the sleeve 22. At least one stiffening plate 26 is provided between the side wall of the sleeve 22 and the top surface of the base 23 to increase the stability between the sleeve 22 and the base 23.

[0048] Furthermore, referring to Figure 1 the rotating mechanism 2 further includes a connecting plate 27. The connecting plate 27 is rotatably connected to the top end of the lead screw 31 and fixedly connected to the top end of each guide rod 32. One end of the connecting plate 27 extends and is hinged to the side wall of the ZL29 medium filter rod forming machine, which improves the stability between the lead screw 31 and the guide rod 32 and does not affect the rotation process of the latex cylinder 1 around the axis of the support rod 21.

[0049] Optionally, the rotation axis of the connecting plate 27 is collinear with the axis of the support rod 21, so that while the connecting plate 27 improves the limit support, it does not interfere with the rotation process of the sleeve 22 around the axis of the support rod 21.

[0050] For example, in this embodiment, two guide rods 32 are provided. The two guide rods 32 form an axisymmetric relationship with the axis of the lead screw 31 as the axis of symmetry and are in the same plane. Correspondingly, the slider 33 is provided with two guide holes 332. The two guide holes 332 form an axisymmetric relationship with the axis of the threaded hole 331 as the axis of symmetry and are in the same plane. Through the limiting structure formed by the two guide rods 32, the positional relationship between the slider 33 and the lead screw 31 is relatively stable, reducing the interference from the latex cylinder 1 to the lead screw 31.

[0051] In this embodiment, the rotating mechanism 2 is composed of a support rod 21, a sleeve 22, a base 23 and a bracket 24. The support rod 21 is fixed to the side wall of the ZL29 medium filter rod forming machine. The sleeve 22 rotates around the axis of the support rod 21 to drive the latex cylinder 1 to rotate into or out of the cavity of the side wall of the ZL29 medium filter rod forming machine to the external glue replenishment position. The lifting mechanism 3 realizes vertical lifting through the cooperation of the lead screw 31 and the guide rod 32 with the slider 33, and accurately adjusts the height of the latex cylinder 1 from the ground. Through the coordination of the horizontal rotation of the rotating mechanism 2 and the vertical movement of the lifting mechanism 3, the operator can complete glue replenishment on the ground, eliminating the safety hazard of climbing a 1.7-meter platform.

[0052] Embodiment 2

[0053] In order to improve the moving efficiency of the latex cylinder 1 in the horizontal plane and the lifting efficiency in the vertical direction, referring to Figure 2, on the basis of the above embodiments, the latex supply device further includes: a first driving mechanism 4 and a second driving mechanism 5.

[0054] Among them, referring to Figure 2 , the first driving mechanism 4 includes: a first motor 41, a first driving wheel 42, a first driven wheel 43 and a first transmission belt 44. The first motor 41 is arranged on the base 23. The rotating shaft of the first motor 41 penetrates to the bottom of the base 23 and is coaxially connected to the first driving wheel 42. The bottom end of the lead screw 31 penetrates to the bottom of the base 23 and is coaxially connected to the first driven wheel 43. The first transmission belt 44 is respectively sleeved on the first driving wheel 42 and the first driven wheel 43 and is tensioned. Driving the first motor 41 to do work to drive the first driving wheel 42 to rotate clockwise / counterclockwise around its own axis. Under the action of the first transmission belt 44, the first driven wheel 43 drives the lead screw 31 to rotate counterclockwise / clockwise around its own axis, thereby converting electrical energy into mechanical energy to drive the latex cylinder 1 to rise / fall.

[0055] Among them, referring to Figure 2 , the second driving mechanism 5 includes: a second motor 51, a second driving wheel 52, a second driven wheel 53 and a second transmission belt 54. The second motor 51 is arranged on the base 23. The rotating shaft of the second motor 51 penetrates to the bottom of the base 23 and is coaxially connected to the second driving wheel 52. The second driven wheel 53 is coaxially connected to the bottom end of the support rod 21. The second transmission belt 54 is respectively sleeved on the second driving wheel 52 and the second driven wheel 53 and is tensioned. Driving the second motor 51 to do work. Since the second driven wheel 53 is fixedly connected to the support rod 21, under the action of the second transmission belt 54, while the second driving wheel 52 rotates clockwise / counterclockwise around its own axis, it rotates clockwise / clockwise around the axis of the support rod 21, thereby driving the sleeve 22 to rotate clockwise / clockwise around the axis of the support rod 21, thereby converting electrical energy into mechanical energy to drive the latex cylinder 1 to move in the horizontal plane.

[0056] Optionally, it is the best embodiment that the first driving wheel 42, the first driven wheel 43, the second driving wheel 52 and the second driven wheel 53 adopt a gear structure. Correspondingly, the first transmission belt 44 is a chain structure adapted to the first driving wheel 42 and the first driven wheel 43, and the second transmission belt 54 is a chain structure adapted to the second driving wheel 52 and the second driven wheel 53, thereby preventing the first transmission belt 44 and the second transmission belt 54 from slipping.

[0057] Optionally, the rotation directions of the rotating shafts of the first motor 41 and the second motor 51 are adjustable. A permanent magnet synchronous motor or an AC servo motor can be used. The former flexibly adapts to the rotation requirements of the lead screw 31 through a frequency converter, and the latter ensures the commutation accuracy through closed-loop control. Both can be integrated in the interlayer of the base 23 and dynamically adjust the steering and speed through a controller (such as a PLC or a special driving module) to meet the stability and energy efficiency requirements of the lifting mechanism 3 for direction switching.

[0058] It should be noted that the core innovation point of this embodiment lies in realizing the efficient coordinated movement of the latex cylinder 1 in the horizontal rotation and vertical lifting directions through a dual-drive mechanism. Regarding the position locking of the sleeve 22 after rotating around the support rod 21 and the axial locking problem after the lead screw 31 rotates in place, it belongs to the conventional technical category in the field of mechanical transmission. For example: for the horizontal rotation locking of the sleeve 22, a positioning hole system with a spring cotter pin, an electromagnetic brake, or a friction plate damping structure can be used; for the axial locking of the lead screw 31 lifting mechanism 3, the self-locking characteristic of the trapezoidal thread (when the lead angle is less than the friction angle) can be utilized, or mechanical stopping can be achieved through an additional brake device. Such locking solutions have been widely applied in industrial scenarios such as machine tool feed systems and lifting platforms, so the specific implementation methods will not be elaborated in this embodiment to avoid obscuring the key points of the electro-mechanical coordinated drive innovative structure.

[0059] In this embodiment, the first drive mechanism 4 drives the lead screw 31 to rotate through the first motor 41 and the second transmission belt 54 to achieve the lifting control of the latex cylinder 1; the second drive mechanism 5 drives the sleeve 22 to rotate around the axis of the support rod 21 through the second motor 51 and the second transmission belt 54 to achieve the horizontal displacement. The electro-mechanical integrated drive system converts electrical energy into rotational-lifting composite motion, significantly improving the moving efficiency of the latex cylinder 1 and reducing the manual operation intensity.

[0060] Embodiment 3

[0061] In order to achieve precise control of the latex supply device, on the basis of the above embodiment, refer to Figure 3 , the latex supply device further includes a monitoring mechanism 6.

[0062] Among them, refer to Figure 3 , the monitoring mechanism 6 includes a pressure sensor 61, an angular displacement sensor 62, and a rangefinder 63. The pressure sensor 61 is arranged at the inner bottom of the installation groove 241 and is used to detect the pressure value from the latex cylinder 1 in real time. By comparing this pressure value with the no-load and anti-overflow thresholds, the replenishment timing of the latex cylinder 1 can be known; the angular displacement sensor 62 is arranged on the base 23 and is used to obtain the angular change of the latex cylinder 1 relative to the reference position in real time when it rotates around the axis of the support rod 21. Through the monitoring and utilization of this angular change, the reliability and repeatability of accurately controlling the latex cylinder 1 to move into / out of the side wall cavity of the molding machine can be achieved; the rangefinder 63 is arranged on the base 23 and is used to measure the distance between the bottom surface of the bracket 24 and the top surface of the base 23 in real time. Through this distance value, the height of the latex cylinder 1 from the ground can be obtained, which is beneficial to accurately controlling the operation of the lifting mechanism 3.

[0063] Optionally, the pressure sensor 61 is an embedded strain gauge sensor. Its sensing surface is flush with the bottom of the mounting groove 241 of the bracket 24. Its measuring range covers the full load weight of the latex cylinder 1 (0 - 300 kg), and the accuracy class is ±0.2% FS. It is fixed to the counterbore reserved at the bottom of the mounting groove 241 by bolts, and its surface is covered with a waterproof sealant layer.

[0064] Optionally, the pressure sensor 61 is built-in with a temperature compensation chip, which dynamically corrects the measurement deviation caused by the change of ambient temperature through a thermistor, ensuring that the detection error is ≤1% under the working conditions of -10°C to 50°C.

[0065] Optionally, the angular displacement sensor 62 is an absolute type photoelectric encoder with a resolution of ±0.1°. Its measuring range covers the rotation range of the sleeve 22 of 0 - 270°. It is rigidly connected to the outer wall of the sleeve 22 through a flange to ensure the alignment accuracy between the latex cylinder 1 and the cavity. The encoder is built-in with a multi-turn counting module, which supports the cumulative measurement of the continuous rotation angle of the sleeve 22 and adapts to the large stroke control requirements. The photoelectric signal eliminates the electromagnetic interference of the motor through an EMI filter, and the output stability is improved by more than 30%. The encoder housing is designed with an IP67 protection level, combined with a silica gel dust-proof sealing ring and a stainless steel housing, which can withstand dust and oil environments. A two-way thrust bearing is added at the flange interface to suppress the influence of axial movement on angle detection and achieve long-term reliable operation in the production scenario.

[0066] Optionally, the rangefinder 63 is a laser phase type rangefinder sensor (such as SICK DT50 series in Germany). Its transmitting head is installed on the base 23 through a universal adjustment bracket, and the transmitting direction is directly opposite to the bottom of the bracket 24. Its measuring range covers 0 - 2 m, and the resolution is ±0.5 mm.

[0067] In this embodiment, the pressure sensor 61 is used to detect the remaining amount of latex in real time, and the glue replenishment timing is determined by combining the no-load and anti-overflow thresholds; the angular displacement sensor 62 monitors the rotation angle of the sleeve 22 to ensure the positioning accuracy of the latex cylinder 1 when moving into / out of the cavity; the rangefinder 63 measures the height from the ground in real time to control the lifting stroke. The three are linked through pressure, angle and height data to achieve precise control of the whole process, avoid no-load or overflow phenomena, and improve the automation level of glue supply.

[0068] Embodiment 4

[0069] In order to realize the intelligent control of the latex glue supply device, on the basis of the above embodiment, the latex glue supply device further includes a central control mechanism.

[0070] Among them, the central control mechanism is electrically connected to the first motor 41, the second motor 51, the pressure sensor 61, the angular displacement sensor 62 and the rangefinder 63 respectively. A number of control instructions are pre-stored in the central control mechanism. The central control mechanism is used to receive and process the signals output by the pressure sensor 61, the angular displacement sensor 62 and the rangefinder 63, and match the corresponding control instructions to control the operation or not of the first motor 41 and the second motor 51.

[0071] Optionally, the central control mechanism uses an industrial-grade PLC controller (such as the Siemens S7-1200 series) as the core processor. Its input module is connected to the pressure sensor 61, the photoelectric encoder and the laser rangefinder 63 through the RS485 bus respectively. The output module controls the first motor 41 (driven by the lead screw 31) and the second motor 51 (rotation of the sleeve 22) through the PWM drive circuit. A three-stage linkage control logic is preset in the PLC: 1) When the pressure value ≤ P_min, trigger the second motor 51 to rotate forward 90° to move out of the latex cylinder 1 → the first motor 41 decelerates and drops to H = 0.5 m → maintain the low position until the pressure ≥ P_max; 2) When the angle deviation Δθ ≥ ±3°, start the second motor 51 to reverse fine-tune the pulse (50 ms / pulse) until Δθ ≤ ±0.5°; 3) When the height error ΔH ≥ ±5 mm, activate the compensation mode of the first motor 41 (step ±1 mm / time). The controller has an emergency stop circuit built in. The emergency stop button signal is directly connected to the drive module to cut off the power supply of the motor, and the safety level reaches PLd. The data storage module records the operation log (pressure-angle-height time series data) and uploads it to the MES system through the Ethernet module. The controller box has an IP65 protection level, is fixed to the side wall of the base 23 through the DIN rail, is internally equipped with a dual-redundancy power module (24VDC ± 5%), and integrates an EMC filter to suppress electromagnetic interference in the workshop.

[0072] It should be noted that this embodiment focuses on the working principle of the central control mechanism. The specific structure of the central control mechanism is not the focus of this embodiment and is prior art. The specific structure of the central control mechanism will not be elaborated in this embodiment and the accompanying drawings.

[0073] Furthermore, this embodiment focuses on the working principles of the first motor 41, the second motor 51, the pressure sensor 61, the angular displacement sensor 62 and the rangefinder 63. The specific structures of the first motor 41, the second motor 51, the pressure sensor 61, the angular displacement sensor 62 and the rangefinder 63 are not the focus of this embodiment and are prior art. The specific structures of the first motor 41, the second motor 51, the pressure sensor 61, the angular displacement sensor 62 and the rangefinder 63 will not be elaborated in this embodiment.

[0074] In this embodiment, the central control mechanism receives and processes pressure, angle, and height signals, and preset linkage control logic. When the pressure is lower than the threshold, the latex cylinder 1 is triggered to move outwards and descend, realizing the intelligent decision-making and execution of the posture adjustment of the latex cylinder 1, and ensuring the system safety and operation reliability.

[0075] Embodiment 5

[0076] In order to realize the full-process automatic control of latex replenishment for the latex cylinder 1, on the basis of the above embodiment, this embodiment provides a method for replenishing glue for a latex supply device, including the following steps:

[0077] Step S1: Obtain the pressure value at the bottom of the installation groove 241, and compare this pressure value with the preset threshold range Pmin, Pmax, where P_min is the pressure value corresponding to the no-load weight (such as latex remaining amount ≤ 5%), and P_max is the pressure value corresponding to the anti-overflow weight (such as latex remaining amount ≥ 95%);

[0078] Step S2: When the pressure value ≤ P_min:

[0079] a. Control the sleeve 22 to rotate around the axis of the support rod 21 by a preset angle θ (θ ∈ [90°, 180°], preferably 90°) in the first direction, driving the latex cylinder 1 to completely move out of the side wall cavity of the ZL29 medium filter rod forming machine;

[0080] b. Control the lifting mechanism 3 to drive the latex cylinder 1 to descend to a preset height H (H = 0.5m ± 0.1m, height from the ground), ensuring that the operation position conforms to ergonomics;

[0081] c. Control to open the cover plate of the latex cylinder 1 and prompt the operator to pour latex manually;

[0082] Step S3: Control to close the cover plate of the latex cylinder 1 and stop the glue replenishment process.

[0083] Furthermore, when the glue replenishment process stops and needs to be reset:

[0084] a. Control the lifting mechanism 3 to drive the latex cylinder 1 to rise to the initial height H0 (H0 = 1.7m ± 0.05m, corresponding to the cavity embedding position of the ZL29 medium filter rod forming machine);

[0085] b. Control the sleeve 22 to rotate around the axis of the vertical rod in the opposite direction by the angle θ, driving the latex cylinder 1 to reset into the side wall cavity of the ZL29 medium filter rod forming machine.

[0086] It should be noted that the inventive points of this embodiment focus on the determination logic of the glue replenishment timing (pressure threshold range comparison) and the displacement glue replenishment method of the latex cylinder 1 (the coordinated action of the angle θ and the height H). The specific implementation details of the cover plate opening and prompting functions are not elaborated as they are supporting existing technologies.

[0087] To further illustrate, the cover of the latex cylinder 1 can be automatically opened and closed by an electromagnetic lock or a pneumatic push rod mechanism (such as an SMC type cylinder), and its drive circuit is linked with the control signal ("control opening / closing" in step S2c / S3). The specific mechanical connection and power transmission method are conventional designs, and reference can be made to the industrial container sealing device (such as the CN201820123456.7 patent).

[0088] To further illustrate, the manual dumping prompt can send a glue filling signal through the sound and light prompt device on the side of the bracket 24 (such as a combination of an LED indicator light and a buzzer), and its trigger logic is bound to the pressure threshold judgment result (step S2c). The hardware structure complies with the GB / T4208-2017 protection level standard and is a general human-computer interaction design.

[0089] In this embodiment, the horizontal rotation-vertical lifting compound movement of the latex cylinder 1 is triggered by pressure threshold judgment (anti-empty load and anti-overflow), and the full process automatic control of the glue filling operation is realized in combination with the preset angle and height parameters.

[0090] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the present application; the dimensions of the drawings are not related to the specific objects, and the dimensions of the objects can be changed arbitrarily.

Claims

1. A latex supply device, which is applied to the ZL29 medium filter rod forming machine, is characterized in that, Comprising: A latex cylinder (1); A rotating mechanism (2), including a support rod (21) standing on one side of the ZL29 medium filter rod forming machine, a sleeve (22) slidably sleeved on the support rod (21), a base (23) connected to the sleeve (22), and a bracket (24) provided on the base (23); an installation groove (241) is provided at the top of the bracket (24), the latex cylinder (1) is arranged in the installation groove (241), and the sleeve (22) is driven to rotate around the axis of the support rod (21) to drive the latex cylinder (1) to rotate around the axis of the support rod (21); A lifting mechanism (3), respectively connected to the base (23) and the bracket (24), driving the lifting mechanism (3) to operate to drive the latex cylinder (1) to move in the vertical direction.

2. The latex feeding device according to claim 1, characterized in that, The lifting mechanism (3) includes: a lead screw (31) and at least one guide rod (32) standing on the base (23), and a slider (33) connected to the side wall of the bracket (24); a threaded hole (331) adapted to the lead screw (31) is provided through the slider (33), and at least one guide hole (332) adapted to the guide rod (32) is provided through the slider (33), the lead screw (31) passes through the threaded hole (331), and each guide rod (32) respectively passes through each guide hole (332), driving the lead screw (31) to rotate around its own axis to drive the latex cylinder (1) to move along the axis of the lead screw (31).

3. The latex feeding device according to claim 2, characterized in that, It further includes a first driving mechanism (4), the first driving mechanism (4) includes: a first motor (41) provided on the base (23), a first driving wheel (42) coaxially connected to the rotating shaft of the first motor (41), a first driven wheel (43) coaxially connected to the lead screw (31), and a second transmission belt (54) sleeved on the first driving wheel (42) and the first driven wheel (43) respectively, driving the first motor (41) to do work to drive the first driving wheel (42) and the first driven wheel (43) to rotate, and further driving the lead screw (31) to rotate around its own axis.

4. The latex feeding device according to claim 3, characterized in that, It further includes a second driving mechanism (5), the second driving mechanism (5) includes: a second motor (51) provided on the base (23), a second driving wheel (52) coaxially connected to the rotating shaft of the second motor (51), a second driven wheel (53) coaxially connected to the support rod (21), and a second transmission belt (54) sleeved on the second driving wheel (52) and the second driven wheel (53) respectively, driving the second motor (51) to do work to drive the second driving wheel (52) and the second driven wheel (53) to rotate, and further driving the sleeve (22) to rotate around the axis of the support rod (21).

5. The latex feeding device according to claim 4, characterized in that, The rotating mechanism (2) further includes a connecting plate (27). The connecting plate (27) is rotatably connected to the top end of the lead screw (31) and fixedly connected to the top end of each guide rod (32). One end of the connecting plate (27) extends and is hinged to the side wall of the ZL29 medium filter rod forming machine. The rotation axis of the connecting plate (27) is collinear with the axis of the support rod (21).

6. The latex supply device according to claim 5, characterized in that, The rotating mechanism (2) further includes a fixing frame (25). The upper and lower ends of the support rod (21) are respectively rotatably connected to a fixing frame (25). Each fixing frame (25) is arranged on the side wall of the ZL29 medium filter rod forming machine.

7. The latex feeding device according to claim 6, wherein, The base (23) is in the shape of a strip plate. The top surface of one end of the base (23) is vertically connected to the bottom end of the sleeve (22). At least one stiffening plate (26) is arranged between the side wall of the sleeve (22) and the top surface of the base (23) to increase the stability between the sleeve (22) and the base (23).

8. The latex feeding device according to claim 7, characterized in that, It further includes a monitoring mechanism (6). The monitoring mechanism (6) is provided with a pressure sensor (61) arranged at the inner bottom of the installation groove (241), an angular displacement sensor (62) and a rangefinder (63) arranged above the base (23). The pressure sensor (61) is used to detect the pressure value from the latex cylinder (1) in real time. The angular displacement sensor (62) is used to obtain the angular change relative to the reference position in real time when the latex cylinder (1) rotates around the axis of the support rod (21). The rangefinder (63) is used to measure the distance between the bottom surface of the bracket (24) and the top surface of the base (23) in real time.

9. The latex feeding device according to claim 8, wherein, It further includes a central control mechanism electrically connected to the first motor (41), the second motor (51), the pressure sensor (61), the angular displacement sensor (62) and the rangefinder (63). A number of control instructions are pre-stored in the central control mechanism. The central control mechanism is used to receive and process the signals output by the pressure sensor (61), the angular displacement sensor (62) and the rangefinder (63), and match the corresponding control instructions to control the operation of the first motor (41) and the second motor (51) on or off.

10. A method for replenishing glue in the latex glue supply device according to any one of claims 1 to 9, characterized in that, The method includes the following steps: Obtain the pressure value at the bottom of the installation groove (241) and compare this pressure value with the preset threshold range Pmin, Pmax, where P_min is the pressure value corresponding to the anti-no-load weight (such as latex remaining amount ≤ 5%), and P_max is the pressure value corresponding to the anti-overflow weight (such as latex remaining amount ≥ 95%); When the pressure value ≤ P_min: a. Control the sleeve (22) to rotate around the axis of the support rod (21) in the first direction by a preset angle θ (θ ∈ [90°, 180°], preferably 90°) to drive the latex cylinder (1) to completely move out of the side wall cavity of the ZL29 medium filter rod forming machine; b. Control the lifting mechanism (3) to drive the latex cylinder (1) to descend to a preset height H (H = 0.5m ± 0.1m, height from the ground) to ensure that the operation position conforms to ergonomics; c. Control to open the cover plate of the latex tank (1) and prompt the operator to pour latex manually; When the pressure value ≥ P_max, control to close the cover plate of the latex tank (1) and stop the glue replenishment process.

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