Sheet rubber weighing and transferring device and method

Abstract

The invention provides a flaky rubber weighing and transferring device. The flaky rubber weighing and transferring device comprises a rack, a weighing belt, a buffer belt, a telescopic discharging belt and a discharging disc. The weighing belt, the buffer belt and the telescopic blanking belt are sequentially arranged on the rack, the weighing belt is connected with the buffer belt, and the buffer belt is connected with the telescopic blanking belt; the telescopic blanking belt comprises a first moving shaft, a second moving shaft, a third moving shaft and a telescopic section belt, a belt body belt section of the telescopic section belt is folded and wound on the first moving shaft, the second moving shaft and the third moving shaft in a Z shape, and the first moving shaft, the second moving shaft and the third moving shaft are driven by a driving device to move back and forth in the belt advancing direction in a telescopic mode. Meanwhile, the telescopic section leather is driven to do telescopic motion. The three moving shafts rapidly move back and forth to drive the telescopic discharging belt to stretch back and forth, and when the telescopic discharging belt rapidly retracts, sheet rubber is flatly laid and falls into a die cavity of the discharging disc through inertia, and the sheet rubber can be effectively prevented from being rolled up and overlapped.

Description

Technical Field

[0001] The present invention relates to the technical field of rubber molding, and specifically to a sheet rubber weighing and transfer device and a transfer method. Background Art

[0002] Currently, for the weighing and transfer of sheet rubber, a direct conveyor belt transmission method is mostly used. However, the just-formed sheet rubber is relatively soft. If the current conveyor belt is directly used to convey the sheet rubber to the AGV (automated guided vehicle) below, the phenomenon of the sheet rubber curling and overlapping is likely to occur, greatly affecting the product quality and increasing the scrap rate of the product. Therefore, it is very necessary to improve this. Through retrieval, no technical solution identical to the present invention was found, only some related comparative technical documents were found, mainly including the following: 1. The patent with the application number 202221396041.3 provides a rubber film cooling device. The device includes a frame, a feeding belt, a slitting mechanism, a cooling water tank, and a draining rack. In this utility model, the rubber film processed by the calender is conveyed to the position of the slitting roller by the feeding belt. The rubber film impacts the slitting roller under the action of inertia and drives the slitting roller to rotate. At the same time, the telescopic end of the cylinder extends relative to the cylinder end to keep the slitting blade in the slitting ring groove of the slitting roller. The rubber film is slit into at least two pieces by the slitting blade and the slitting roller, and the slit rubber film is cooled after entering the cooling water tank. This patent takes the method of directly cooling the rubber sheet after slitting when discharging, so that the rubber sheet quickly hardens, thereby preventing the deformation of the rubber sheet; however, this is likely to cause changes in the rubber properties, affect the product quality, and have an adverse impact on the rubber; moreover, this patent cannot control the amount of rubber material in each cavity, the product quality cannot be guaranteed, and rubber material will be wasted.

[0003] 2. The patent with the application number 202223446596.7 provides a rubber preforming machine, including a base, on which a frame is provided. The frame is provided with an extrusion unit, and the extrusion unit includes a head assembly and a door panel, and the door panel is clamped with the head assembly; a conveying unit, which includes a conveyor and a conveying driving part, the conveyor is connected with the conveying driving part, and the conveyor reciprocates along a first direction under the drive of the conveying driving part, and the first direction is perpendicular to the transmission direction of the conveyor; a first driving part, which is connected with the door panel, and the first driving part drives the door panel to lift and lower; a second driving part, and the head assembly is opened and closed under the drive of the second driving part. This patent uses a conveyor belt to transport rubber. Although it can save labor, the length of the conveyor belt is limited by the site usage area. Similarly, this patent cannot control the amount of rubber material in each cavity, the product quality cannot be guaranteed, and rubber material will be wasted.

[0004] 3. Patented sheet rubber material manufacturing device and manufacturing method with application number 202110223739.9. The patent discloses a sheet rubber material manufacturing device for manufacturing unvulcanized sheet rubber material, which includes a traction conveyor capable of adjusting the conveying speed, which receives the rubber material extruded from the extruder and conveys it to the downstream side of the conveying direction; a first weight measuring device, which is arranged on the downstream side of the conveying direction of the traction conveyor and measures the weight per unit length of the rubber material during transportation; a first cooling device, which cools the rubber material measured by the first weight measuring device; a second weight measuring device, which measures the weight per unit length of the rubber material after cooling by the first cooling device; and a control device, which controls the conveying speed of the traction conveyor based on the weight per unit length of the rubber material measured by the first weight measuring device and the second weight measuring device. However, this patent does not consider how to weigh and convey each cavity of rubber; in particular, the patent is prone to rubber rolling or folding when it is transferred to and from the AGV unmanned vehicle.

[0005] Through the analysis of the above patents, it can be found that the current sheet rubber weighing and transporting device and method cannot control the amount of rubber in each cavity for weighing, calculation and transport, especially in the transport of sheet rubber, how to keep the shape of the sheet rubber unchanged during the transport process, especially when using AGV unmanned vehicle for transfer, the problem of not causing the rubber to roll up or fold has not been effectively overcome, especially when transferring with AGV unmanned vehicle, the rubber is prone to roll up or fold. Therefore, it is very necessary to improve this. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a sheet rubber weighing and transporting device, which can solve the problem that the amount of rubber in each cavity cannot be controlled in the prior art, especially the problem that the rubber is easily rolled up or folded when being transferred with an AGV unmanned vehicle.

[0007] The present invention will also provide a sheet rubber transport method using the sheet rubber weighing and transporting device; this method can effectively solve the problem of sheet rubber rolling up or folding when using an AGV unmanned vehicle for transfer, without affecting the quality of the sheet rubber product. At the same time, it can weigh and transport according to the needs of each rubber cavity, effectively saving rubber.

[0008] To solve the above technical problems, the present invention proposes a sheet rubber weighing and transfer device, including a frame, a weighing belt, a buffer belt, a telescopic blanking belt, and a blanking tray; the weighing belt, the buffer belt, and the telescopic blanking belt are arranged in sequence on the frame, the weighing belt is connected to the buffer belt, and the buffer belt is connected to the telescopic blanking belt; a weighing sensor is arranged under the weighing belt to weigh the rubber falling on the weighing belt; the telescopic blanking belt is a mobile belt that can retract and extend back and forth along the belt running direction; the telescopic blanking belt includes a first moving shaft, a second moving shaft, a third moving shaft, and a telescopic section belt. The belt body of the telescopic section belt is wound in a Z-shaped fold around the first moving shaft, the second moving shaft, and the third moving shaft, and the first moving shaft, the second moving shaft, and the third moving shaft are driven by a driving device to move back and forth in the belt advancing direction, and at the same time drive the telescopic section belt to move telescopically; when the telescopic section belt is driven by the driving device to retract, the first moving shaft, the second moving shaft, and the third moving shaft also retract inward, and the retracted telescopic section belt is stored between the third moving shaft and the fixed shaft. When the telescopic section belt retracts, the sheet rubber on the belt falls flat into the designated mold cavity of the blanking tray due to inertia.

[0009] Further, a buffer belt is arranged between the weighing belt and the telescopic section belt for temporarily storing rubber so as not to affect the normal operation of the front and rear functional sections. The belt rotating shafts of the weighing belt, the buffer belt, and the telescopic blanking belt are all driven by motors.

[0010] Further, a photoelectric gate is added at each fixed length of the weighing belt to facilitate the cutting mechanism of the discharging mechanism to cut out rubber of equal length; the weighing sensor is arranged under the weighing belt, and the value of the weighing sensor is processed by its driver and then input into the PLC (programmable logic controller) control system.

[0011] Further, the driving device is a cylinder or an electric cylinder; the first moving shaft, the second moving shaft, and the third moving shaft are driven by the cylinder or the electric cylinder to move back and forth in the belt advancing direction; a gear and rack are arranged under the second moving shaft, and the force generated by the speed imbalance on both sides during the movement of the second moving shaft is borne through the cooperation of the gear and rack, protecting other structures of the telescopic belt and improving the stability during operation.

[0012] Further, a blanking tray is arranged under the telescopic blanking belt. There are four partitions on the blanking tray, and each partition can be aligned with the telescopic belt direction every 90° rotation, so as to be able to receive and place the rubber materials in four mold cavities in partitions.

[0013] Furthermore, the rubber weighing and transferring device further includes a rack lifting mechanism, which is arranged under the rack and lifts the rack through the rack lifting mechanism; the rack lifting mechanism includes a lifting lead screw, a lifting nut, a lifting platform, a lifting motor, a fixed rotation gear and a fixed rotation motor. The lifting platform is installed on the lifting nut, and the upper surface of the lifting platform contacts the middle layer board of the rack when lifting; there is a lifting gear pair under the lifting lead screw, which is driven by the lifting motor with a right-angle reducer. The fixed rotation gear pair on the outer edge of the lifting nut is driven by the fixed rotation motor with a right-angle reducer; the lifting lead screw adopts a trapezoidal lead screw with a self-locking function, which can ensure the stability of the platform height when the motor is powered off.

[0014] Furthermore, linear guide sliders, a lead screw module and a lifting mechanism moving motor are arranged on the ground under the rack lifting mechanism. The rack lifting mechanism is connected to the linear guide sliders below and is driven to translate by the lead screw module and the linear guide sliders, which can realize the separate placement of rubber materials in different cavities and the transfer of the rack with the AGV. The lifting mechanism moving motor can accurately control the horizontal stroke of the rack lifting mechanism.

[0015] The present invention also relates to a rubber weighing and transferring method using the above-mentioned sheet rubber weighing and transferring device. When the sheet rubber is extruded from the nozzle, it is triggered to be cut by the photoelectric gate induction. The cut sheet rubber falls onto the weighing belt and is weighed by the weighing sensor; the rubber in one cavity is cut into multiple sections, and when the last section of the sheet rubber passes through the control system, the total weight of the rubber in each cavity is calculated, and the weight required to fill one cavity is supplemented, and the cutting is carried out according to the weight to be supplemented; after the sheet rubber is cut and falls onto the weighing belt, it will pass through the weighing belt and the buffer belt in sequence and reach the telescopic blanking belt. The telescopic blanking belt drives the sheet rubber to run to the front of the telescopic blanking belt, and then the driving device pushes the telescopic blanking belt to quickly contract. The sheet rubber falls flat on the tray due to inertia, and the sheet rubber falls flat into one cavity of the tray due to inertia. After loading the rubber in one cavity, the rack is lifted by the rack lifting mechanism and then rotated 90°, and then continue to load another cavity according to the foregoing procedure; after filling four cavities with rubber, the rack is carried out by the rack lifting mechanism and placed at the outer end of the translation guide rail, and then the AGV takes away the rack full of four cavities of rubber and distributes it to the next process machine.

[0016] Furthermore, the weighing method is specifically as follows: after the heads of the first n - 1 sections of the rubber material reach the position of the photoelectric gate, the induction cutting is triggered, the lengths of the first n - 1 sections of the rubber are controlled, and the sum of the weights, the extrusion time sum of the first n - 1 sections are measured. Then, the sum of the weights of the first n - 1 sections is divided by the sum of the extrusion times of the first n - 1 sections to obtain the instantaneous weight speed. The remaining weight is obtained by subtracting the sum of the weights from the total weight. The extrusion time of the nth section is obtained by dividing the remaining weight by the instantaneous weight speed. Based on this, the timing cutting is carried out, and the cutting is carried out according to the total weight of one cavity of rubber to be supplemented for the last section.

[0017] Furthermore, when the rack lifting mechanism carries the rack out, a lifting motor and a fixed-rotation motor are provided on the rack lifting mechanism. The lifting motor is connected to the lifting platform through a set of lifting screw-nut pairs. The upper surface of the lifting platform supports the middle layer board of the rack, and drives the rack to move up and down by lifting the middle layer board. At the same time, the fixed-rotation motor drives the gear disc of the lifting platform through a fixed-rotation gear. By synchronously rotating the lifting motor and the fixed-rotation motor, the lifting screw of the lifting screw-nut pair and the lifting nut rotate in the same direction relatively statically, realizing the fixed-height and fixed-angle rotation actions of the lifting platform, and completing the loading of the four mold cavities of the material tray. After the material tray is filled with materials, the rack lifting mechanism will lift the filled rack through the lifting platform, and under the drive of the linear guide rail slider and the lead screw module below the rack lifting mechanism, translate along the linear guide rail to the outer end of the linear guide rail. The lifting motor drives the lifting platform to lower and put down the rack, and then the AGV takes away the rack full of rubber in the four mold cavities and distributes it to the next process machine.

[0018] The beneficial effects of the present invention are as follows: 1. Through the rapid back-and-forth movement of the three moving axes of the present invention, the telescopic blanking belt section is driven to stretch back and forth. When the telescopic blanking belt section quickly retracts, the inertial force is used to make the sheet rubber spread out flat and fall into the mold cavity of the material tray, which can effectively prevent the sheet rubber from curling and overlapping. 2. By calculating according to the rubber material of each cavity and weighing and cutting according to the weight of each piece of rubber material in each cavity and the total weight of the rubber material, the rubber material of each cavity can be accurately determined. Through the unique weighing method, the amount of rubber material in each cavity can be controlled, ensuring product quality and not wasting rubber material. 3. Through the automatic fixed-height and fixed-angle rotation loading of the four mold cavities by the rack lifting mechanism of the present invention, the rubber material can be automatically collected, and at the same time, the rack can be automatically moved out, which is convenient for automatic transportation. 4. The material tray of the present invention is divided into areas to place the rubber materials of the four mold cavities, which can adapt to products with different required rubber material weights. 5. Using AGV to transport sheet rubber is more flexible than using a conveyor belt throughout the process, and can reduce the floor area used. Brief Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a rubber weighing and transporting device; Figure 2 It is a schematic structural diagram of a transporting device; Figure 3 It is a schematic cross-sectional view of a telescopic belt section; Figure 4 It is a front view of a rack lifting mechanism; Figure 5 It is a side view of a rack lifting mechanism; Figure 6 Schematic view of the A-A section of the rack lifting mechanism; Figure 7 Schematic view of the linear guide rail slider, lead screw module and servo motor; Figure 8 Schematic view of the partition structure of the material tray; Description of reference numerals: (1) weighing belt; (101) weighing sensor; (2) buffer belt; (3) telescopic blanking belt; (301) driving device; (302) gear rack; (303) telescopic section belt; (304) moving shaft 1; (305) moving shaft 2; (306) moving shaft 3; (4) rack; (5) rack lifting mechanism; (501) lifting platform; (502) lifting nut; (503) fixed-rotation gear; (504) fixed-rotation motor; (505) lifting lead screw; (506) lifting gear; (507) lifting motor; (6) reducer; (7) blanking tray; (8) linear guide rail slider; (9) lead screw module; (10) moving motor of the lifting mechanism; (11) frame. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will combine the accompanying drawings of the embodiments of the present invention Figures 1-7 to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down,...) in the embodiments of the present invention are only used to explain the relative positional relationship of components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. Embodiment 1

[0022] The present invention provides a sheet rubber weighing and transfer device, which includes a frame 11, a weighing belt 1, a buffer belt 2, a telescopic blanking belt 3, and a blanking tray 7. The weighing belt 1, the buffer belt 2, and the telescopic blanking belt 3 are arranged in sequence on the frame 11. The weighing belt 1 is connected to the buffer belt 2, and the buffer belt 2 is connected to the telescopic blanking belt 3. A weighing sensor 101 is provided under the weighing belt 1 to weigh the rubber falling on the weighing belt 1. The telescopic blanking belt 3 is a movable belt that can retract and extend back and forth along the belt running direction. The telescopic blanking belt 3 includes a moving shaft one 304, a moving shaft two 305, a moving shaft three 306, and a telescopic section belt 303. The belt main body belt section of the telescopic section belt 303 is wound in a Z-shaped fold around the moving shaft one 304, the moving shaft two 305, and the moving shaft three 306. The moving shaft one 304, the moving shaft two 305, and the moving shaft three 306 are driven by a driving device 301 to move back and forth in a telescopic manner along the belt traveling direction, and at the same time drive the telescopic section belt to expand and contract. When the telescopic section belt 303 is driven by the driving device 301 to retract, the moving shaft one 304, the moving shaft two 305, and the moving shaft three 306 also retract inward. The retracted telescopic section belt 303 is stored between the moving shaft three 306 and the fixed shaft. When the telescopic section belt 303 retracts, the sheet rubber on the belt falls flat into the specified mold cavity of the blanking tray 7 due to inertia.

[0023] Further, a buffer belt 2 is provided between the weighing belt 1 and the telescopic section belt 303 for temporarily storing rubber so as not to affect the normal operation of the front and rear functional sections. The belt rotating shafts of the weighing belt 1, the buffer belt 2, and the telescopic blanking belt 3 are all driven by motors.

[0024] Further, a photoelectric door is added at each fixed length of the weighing belt 1 to facilitate the cutting mechanism of the discharging mechanism to cut out rubber of equal length. The weighing sensor 101 is arranged under the weighing belt 1, and the value of the weighing sensor 101 is processed by its driver and then input into the PLC (programmable logic controller) control system.

[0025] Further, the driving device 301 is a cylinder or an electric cylinder. The moving shaft one 304, the moving shaft two 305, and the moving shaft three 306 are driven by the cylinder or the electric cylinder to move back and forth in a telescopic manner along the belt traveling direction. A gear rack 302 is arranged under the moving shaft two 305, and the force generated by the unbalanced speeds on both sides during the movement of the moving shaft two 305 is borne through the cooperation of the gear rack 302, protecting other structures of the telescopic belt and improving the stability during operation.

[0026] Further, a blanking tray 7 is arranged under the telescopic blanking belt 3. There are four partitions on the blanking tray 7, and each partition can be aligned with the telescopic belt direction by rotating 90°, so as to be able to receive and place the rubber materials of four mold cavities in partitions.

[0027] Furthermore, the rubber weighing and transferring device also includes a material rack lifting mechanism 5, which is arranged below the material rack 4, and the material rack 4 is lifted by the material rack lifting mechanism 5; the material rack lifting mechanism 5 includes a lifting screw 505, a lifting nut 502, a lifting platform 501, a lifting motor 507, a fixed rotation gear and a fixed rotation motor, the lifting platform 501 is installed on the lifting nut 502, and the upper surface of the lifting platform 501 contacts the middle layer plate of the material rack 4 when lifting; there is a lifting gear 506 pair below the lifting screw 505, which is transmitted to the lifting motor 507 with a right-angle reducer 6, and the fixed rotation gear pair on the outer edge of the lifting nut 502 is transmitted to the fixed rotation motor with a right-angle reducer 6; the lifting screw 505 adopts a trapezoidal screw with a self-locking function, which can ensure the stability of the platform height when the motor is powered off.

[0028] Furthermore, a linear guide slider 8, a screw module 9 and a lifting mechanism moving motor 10 are provided on the ground below the material rack lifting mechanism 5. The material rack lifting mechanism 5 is connected to the linear guide slider 8 below and is driven to translate by the screw module 9 and the linear guide slider 8. This enables the separate placement of rubber materials in different mold cavities and their transfer to the material rack 4 of the AGV. The lifting mechanism moving motor 10 can accurately control the horizontal stroke of the material rack lifting mechanism 5.

[0029] The present invention also relates to a rubber weighing and transporting method using the above-mentioned sheet rubber weighing and transporting device. When the sheet rubber is extruded from the nozzle, the cutting is triggered by the photoelectric gate induction, and the cut sheet rubber falls on the weighing belt 1 and is weighed by the weighing sensor 101; a mold cavity rubber is cut into multiple sections, and the total weight of the rubber in each mold cavity is calculated by the control system in the last section of the sheet rubber to make up the weight of one cavity of rubber, and the rubber is cut according to the weight to be made up; after the sheet rubber is cut and falls onto the weighing belt 1, it will pass through the weighing belt, the buffer belt 2, and reach the telescopic blanking belt 3 in sequence, and the telescopic The blanking belt 3 drives the sheet rubber to run to the frontmost part of the telescopic blanking belt 3, and then the driving device 301 pushes the telescopic blanking belt 3 to shrink rapidly. The sheet rubber falls flat on the blanking tray 7 due to inertia. The sheet rubber falls flat into a mold cavity on the blanking tray 7 due to inertia. After loading one mold cavity rubber, the material rack 4 is lifted up by the material rack lifting mechanism 5, and then rotated 90°, and continues to load another mold cavity according to the above procedure; after filling four mold cavities with rubber, the material rack 4 is moved out by the material rack lifting mechanism 5 and placed at the outer end of the translation guide rail, and then the AGV takes away the material rack 4 loaded with four mold cavities rubber and distributes it to the next process machine.

[0030] Further, the weighing method is specifically as follows: after the heads of the rubber materials in the first n - 1 segments reach the optoelectronic switch position, induction cutting is triggered, the lengths of the rubber materials in the first n - 1 segments are controlled, and the sum of the weights, the sum of the extrusion times of the first n - 1 segments are measured. Then, the sum of the weights of the first n - 1 segments is divided by the sum of the extrusion times of the first n - 1 segments to obtain the instantaneous weight speed. The remaining weight is obtained by subtracting the sum of the weights from the total weight. The extrusion time of the nth segment is obtained by dividing the remaining weight by the instantaneous weight speed. Based on this, timing cutting is performed, and cutting is carried out for the last segment according to the total weight required to fill one cavity of rubber.

[0031] Further, when the material rack support mechanism 5 carries the material rack 4 out, a lifting motor 507 and a fixed - rotation motor are provided on the material rack support mechanism 5. The lifting motor 507 is connected to the lifting platform 501 through a set of lifting lead screw 505 - nut pair. The upper surface of the lifting platform 501 supports the middle layer plate of the material rack 4, and drives the material rack 4 to move up and down by lifting the middle layer plate. At the same time, the fixed - rotation motor drives the gear disk of the lifting platform 501 through a fixed - rotation gear. By synchronously rotating the lifting motor 507 and the fixed - rotation motor, the lifting lead screw 505 of the lifting lead screw 505 - nut pair and the lifting nut 502 rotate in the same direction relatively statically, realizing the fixed - height and fixed - angle rotation actions of the lifting platform 501, and completing the loading of the four cavities of the blanking disk 7. After the blanking disk 7 is filled with materials, the material rack support mechanism 5 will lift the filled material rack 4 through the lifting platform 501. Driven by the linear guide slider 8 and the lead screw module 9 below the material rack support mechanism 5, it is translated along the linear guide to the outer end of the linear guide. The lifting motor 507 drives the lifting platform 501 to lower and put down the material rack 4, and then the AGV takes away the material rack 4 full of rubber for four cavities and distributes it to the next - process machine.

[0032] The beneficial effects of the present invention are as follows: 1. Through the rapid back - and - forth movement of the three moving axes of the present invention, the telescopic blanking belt 3 is driven to stretch back and forth. When the telescopic blanking belt 3 quickly retracts, the sheet - shaped rubber is made to fall flat into the cavity of the blanking disk 7 by inertia, which can effectively prevent the sheet - shaped rubber from curling and overlapping. 2. By calculating according to the rubber material of each cavity and weighing, measuring and cutting according to the weight of each piece of rubber material in each cavity and the total weight of the rubber material, the rubber material of each cavity can be accurately determined. Through the unique weighing method, the amount of the rubber material of each cavity can be controlled, ensuring product quality and not wasting rubber materials. 3. Through the material rack support mechanism 5 for automatically performing fixed - height and fixed - angle rotation loading of the four cavities, the rubber materials can be automatically collected, and at the same time, the material rack 4 can be automatically moved out, which is convenient for automated transportation. 4. The blanking disk 7 of the present invention places the rubber materials of the four cavities in partitions, which can adapt to products with different required rubber material weights. 5. The present invention uses an AGV to transport sheet rubber, which is more flexible than using a conveyor belt throughout the process and can reduce the floor area used.

Claims

1. A sheet rubber weighing and transporting device, comprising a frame (11), a weighing belt (1), a buffer belt (2), a telescopic blanking belt (3), and a blanking plate (7); the weighing belt (1), the buffer belt (2), and the telescopic blanking belt (3) are arranged on the frame (11) in sequence, the weighing belt (1) is connected to the buffer belt (2), and the buffer belt (2) is connected to the telescopic blanking belt (3); a weighing sensor (101) is arranged under the weighing belt (1) to weigh the rubber dropped on the weighing belt (1); the telescopic blanking belt (3) is a movable belt that can be telescoped back and forth along the running direction of the belt; the telescopic blanking belt (3) comprises a movable shaft 1 (304), a movable shaft 2 (305), a movable shaft 3 (306), a telescopic section belt (303), a telescopic section belt (304), a telescopic section belt (305), a telescopic section belt (306), a telescopic section belt (306), a telescopic section belt (307), a telescopic section belt (308), a telescopic section belt (309), a telescopic section belt (301), a telescopic section belt (301), a telescopic section belt (301), a telescopic section belt (301), a telescopic section belt (302), a telescopic section belt (303), a telescopic section belt (304), a telescopic section belt (305), a telescopic section belt (306), a telescopic section belt (307), a telescopic section belt (308), a telescopic section belt (309), a telescopic section belt (301), a telescopic section belt (301), a telescopic section belt (301), a telescopic section belt (301), a telescopic section belt (302), a telescopic section belt (303), a telescopic section belt (303), a telescopic section belt (303), a telescopic section belt (303 The belt main body belt section of the belt 3) is folded in a Z shape and is wound around the moving shaft 1 (304), the moving shaft 2 (305) and the moving shaft 3 (306), and the moving shaft 1 (304), the moving shaft 2 (305) and the moving shaft 3 (306) are driven by the driving device (301) to move back and forth along the belt travel direction, and at the same time drive the telescopic section belt (303) to move telescopically; when the telescopic section belt (303) is driven by the driving device (301) to retract, the moving shaft 1 (304), the moving shaft 2 (305) and the moving shaft 3 (306) are also retracted inwardly, and the retracted telescopic section belt (303) is stored between the moving shaft 3 (306) and the fixed shaft, and when the telescopic section belt (303) is retracted, the sheet rubber on the belt falls straight into the designated mold cavity of the blanking tray (7) due to inertia.

2. A sheet rubber weighing and transporting device according to claim 1, characterized in that: A buffer belt (2) is provided between the weighing belt (1) and the telescopic section belt (303) for temporarily storing rubber so as not to affect the normal operation of the front and rear functional sections. The belt shafts of the weighing belt (1), the buffer belt (2) and the telescopic blanking belt (3) are all driven by a motor.

3. A sheet rubber weighing and transporting device according to claim 1, characterized in that: The weighing belt (1) is provided with a photoelectric gate at each fixed length, so that the discharging mechanism can cut out rubber of equal length; the weighing sensor (101) is arranged below the weighing belt (1), and the value of the weighing sensor (101) is processed by its driver and then input into a PLC (programmable logic controller) control system.

4. A sheet rubber weighing and transporting device according to claim 1, characterized in that: The driving device (301) is a pneumatic cylinder or an electric cylinder; the pneumatic cylinder or the electric cylinder drives the moving shaft 1 (304), the moving shaft 2 (305) and the moving shaft 3 (306) to move back and forth along the direction of the belt travel; a gear rack (302) is arranged below the moving shaft 2 (305); the gear rack (302) cooperates to bear the force generated by the unbalanced speed of the two sides of the moving shaft 2 (305) when it moves, thereby protecting other structures of the telescopic belt and improving the stability during operation.

5. The sheet rubber weighing and transporting device according to claim 1, characterized in that: A material drop tray (7) is arranged below the telescopic material drop belt (3), and the material drop tray (7) has four partitions. Each time a partition is rotated 90°, it can be aligned with the direction of the telescopic belt, so that the rubber materials of the four mold cavities can be received and placed in the partitions.

6. The sheet rubber weighing and transporting device according to claim 1, characterized in that: The rubber weighing and transferring device further comprises a material rack lifting mechanism (5), the material rack lifting mechanism (5) being arranged below the material rack (4), and the material rack (4) being lifted by the material rack lifting mechanism (5); the material rack lifting mechanism (5) comprising a lifting screw (505), a lifting nut (502), a lifting platform (501), a lifting motor (507), a fixed rotation gear and a fixed rotation motor; the lifting platform (501) is mounted on the lifting nut (502), and the upper surface of the lifting platform (501) contacts the middle layer plate of the material rack (4) during lifting; a lifting gear (506) pair is provided below the lifting screw (505) and is driven by the lifting motor (507) with a right-angle reducer (6); the fixed rotation gear pair on the outer edge of the lifting nut (502) is driven by the fixed rotation motor with a right-angle reducer (6); the lifting screw (505) adopts a trapezoidal screw with a self-locking function, and can ensure the stability of the platform height when the motor is powered off.

7. The sheet rubber weighing and transporting device according to claim 1, characterized in that: The ground below the material rack lifting mechanism (5) is provided with a linear guide slider (8), a screw module (9) and a lifting mechanism moving motor (10); the material rack lifting mechanism (5) is connected to the linear guide slider (8) below and driven to move in translation by the screw module (9) and the linear guide slider (8), so that different mold cavity rubber materials can be placed separately and transferred to the material rack (4) of the AGV; the lifting mechanism moving motor (10) can accurately control the horizontal stroke of the material rack lifting mechanism (5).

8. A method for weighing and transporting rubber, characterized in that: When the sheet rubber is extruded from the nozzle, the cutting is triggered by the photoelectric gate induction, and the cut sheet rubber falls onto the weighing belt (1) and is weighed by the weighing sensor (101); a mold cavity rubber is cut into multiple sections, and the last section of the sheet rubber is calculated by the control system to calculate the total weight of the rubber in each mold cavity to make up the weight of one cavity of rubber, and the sheet rubber is cut according to the weight to be made up; after the cut sheet rubber falls onto the weighing belt (1), it passes through the weighing belt, the buffer belt (2), and reaches the telescopic blanking belt (3) in sequence, and the telescopic blanking belt (3) drives the sheet rubber to run to the telescopic blanking belt (3), and then the driving device (301) pushes the telescopic blanking belt (3) to shrink rapidly, and the sheet rubber falls flat on the blanking tray (7) due to inertia, and the sheet rubber falls flat in a mold cavity on the blanking tray (7) due to inertia. After one mold cavity is filled with rubber, the material rack (4) is lifted up by the material rack lifting mechanism (5), and then rotated 90 degrees, and another mold cavity is loaded according to the above procedure; after four mold cavities are filled with rubber, the material rack (4) is moved out by the material rack lifting mechanism (5), placed at the outer end of the translation guide rail, and then the AGV takes away the material rack (4) full of four mold cavities of rubber and delivers it to the next process machine.

9. A rubber weighing and transporting method according to claim 8, characterized in that: The weighing method is specifically that after the rubber head of the first n-1 sections reaches the photoelectric gate position, the induction cutting is triggered, the length of the first n-1 sections of rubber is controlled, and the weight and extrusion time of the first n-1 sections are measured, and then the weight and extrusion time of the first n-1 sections are divided by the weight and extrusion time of the first n-1 sections to obtain the instantaneous weight speed, the weight sum is subtracted from the total weight to obtain the remaining weight, and the remaining weight is divided by the instantaneous weight speed to obtain the extrusion time of the nth section, which is used as the basis for timing cutting, and the last section is cut according to the total weight of the rubber cavity.

10. A rubber weighing and transporting device and method according to claim 8, characterized in that The material rack (4) is moved out by the material rack lifting mechanism (5) by carrying the material rack (4). The material rack lifting mechanism (5) is provided with a lifting motor (507) and a fixed-rotation motor. The lifting motor (507) is connected to the lifting platform (501) through a set of lifting screw nut pairs. The upper surface of the lifting platform (501) supports the middle layer plate of the material rack (4) and drives the material rack (4) to move up and down by lifting the middle layer plate. At the same time, the fixed-rotation motor drives the toothed disk of the lifting platform (501) through the fixed-rotation gear, and the lifting motor (507) and the fixed-rotation motor rotate synchronously, so that the lifting screw (505) of the lifting screw nut pair and the lifting nut (502) are relative to each other. The stationary same-direction rotation realizes the fixed-height and fixed-angle rotation of the lifting platform (501), thereby completing the loading of the four mold cavities of the blanking tray (7); after the blanking tray (7) is filled with materials, the material rack lifting mechanism (5) will lift the fully loaded material rack (4) through the lifting platform (501), and driven by the linear guide slider (8) and the screw module (9) below the material rack lifting mechanism (5), it will move along the linear guide to the outer end of the linear guide, and the lifting motor (507) will drive the lifting platform (501) to descend and put down the material rack (4), and then the AGV will take away the fully loaded material rack (4) with four-cavity rubber and deliver it to the next process machine.

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