A sheet rubber weighing and transferring device and method

Abstract

The present application provides a kind of sheet rubber weighing transfer device, including rack, weighing belt, buffer belt, telescopic blanking belt, blanking disc;The weighing belt, buffer belt, telescopic blanking belt are sequentially arranged on rack, weighing belt is connected buffer belt, buffer belt is connected telescopic blanking belt;Telescopic blanking belt includes moving shaft one, moving shaft two, moving shaft three, telescopic section belt, and the belt main body belt section of telescopic section belt is folded in Z and is wound on moving shaft one, moving shaft two and moving shaft three, and moving shaft one, moving shaft two and moving shaft three are driven along the belt advancing direction telescopic back and forth movement, simultaneously drive telescopic section belt telescopic movement.The application is back and forth fast movement by three moving shafts, drive telescopic blanking belt back and forth telescopic, and when telescopic blanking belt is quickly retracted, inertia is used to let sheet rubber be laid flat and fall into the mold cavity of blanking disc, can effectively prevent sheet rubber roll up, overlap.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rubber forming technology, in particular to a sheet-shaped rubber weighing and transferring device and a transferring method. BACKGROUND

[0002] The current sheet-shaped rubber weighing and transferring is directly transmitted by a conveying belt. However, the just-formed sheet-shaped rubber is relatively soft. If the current conveying belt is used to directly transport the sheet-shaped rubber to the AGV (automated guided vehicle) below, the sheet-shaped rubber is prone to rolling up and overlapping, which greatly affects the product quality and increases the product scrap rate. Therefore, it is necessary to improve it. Through searching, no same technical solution as the present application is found, but only some related comparative technical documents are found, mainly including the following:

[0003] 1. A rubber sheet cooling equipment is provided in the patent with the application number 202221396041.3. The equipment includes a rack, a feeding belt, a slitting mechanism, a cooling pool and a draining rack. The rubber sheet processed by the calendering machine is conveyed to the position of the slitting roller through the feeding belt. The rubber sheet hits the slitting roller and drives the slitting roller to rotate under the action of inertia. At the same time, the extension end of the air cylinder extends relative to the cylinder body end, keeping the slitting blade in the slitting ring groove of the slitting roller. The rubber sheet is cut into at least two pieces by the slitting blade and the slitting roller. The cut rubber sheet is cooled after entering the cooling pool. The patent cuts the rubber sheet and directly cools it when discharging, which quickly hardens the rubber sheet to prevent deformation of the rubber sheet. However, this method is prone to change the properties of the rubber, affecting the quality of the product and adversely affecting the rubber. Moreover, the patent cannot control the amount of rubber in each cavity, the product quality cannot be guaranteed, and rubber is wasted.

[0004] 2. A rubber pre-forming machine is provided in the patent with the application number 202223446596.7, which includes a base, a frame body provided on the base, an extrusion unit provided on the frame body, the extrusion unit including a head assembly and a door plate, the door plate being connected with the head assembly, a conveying unit including a conveyor and a conveying drive part, the conveyor being connected with the conveying drive part, the conveyor reciprocating along a first direction under the drive of the conveying drive part, the first direction being perpendicular to the transmission direction of the conveyor, a first drive part connected with the door plate, the first drive part driving the door plate to ascend and descend, and a second drive part, the head assembly being opened and closed under the drive of the second drive part. The patent uses a conveying belt to transport rubber, which can save labor, but the length of the conveying belt is limited by the use area of the site. Similarly, the patent cannot control the amount of rubber in each cavity, the product quality cannot be guaranteed, and rubber is wasted.

[0005] 3. Patent No. 202110223739.9 for manufacturing device and method of sheet rubber material. This patent discloses a 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 to the downstream side of the conveying direction; a first weight measuring device configured on the downstream side of the conveying direction of the traction conveyor and measuring the weight per unit length of the rubber material during conveying; a first cooling device for cooling the rubber material after being measured by the first weight measuring device; a second weight measuring device for measuring the weight per unit length of the rubber material after being cooled by the first cooling device; and a control device for controlling the conveying speed of the traction conveyor based on the weight per unit length of the rubber material measured by the first and second weight measuring devices. However, this patent does not consider how to weigh and convey rubber according to the demand of each cavity; especially when the patent is transferred with AGV, the rubber is easy to roll up or fold.

[0006] Through the analysis of the above-mentioned patent, it can be found that the current sheet rubber weighing and transferring device and method cannot control the amount of rubber in each cavity for weighing and conveying, especially in the conveying of sheet rubber, how to keep the shape of sheet rubber unchanged during conveying, especially when transferring with AGV, the rubber is easy to roll up or fold. The problem has not been effectively overcome, especially when transferring with AGV, the rubber is easy to roll up or fold. Therefore, it is necessary to improve it. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a sheet rubber weighing and transferring device, which can solve the problem of not being able to control the amount of rubber in each cavity in the prior art, especially when transferring with AGV, the rubber is easy to roll up or fold.

[0008] The present application also provides a sheet rubber transferring method using the above-mentioned sheet rubber weighing and transferring device; the method can effectively solve the problem of preventing the rubber from rolling up or folding when transferring with AGV, and also can not affect the quality of sheet rubber products, and can weigh and convey rubber according to the demand of each cavity, effectively saving rubber.

[0009] In order to solve the above technical problems, the present application provides a sheet rubber weighing and transferring device, which comprises a rack, a weighing belt, a buffer belt, an extensible material dropping belt and a material dropping disc; the weighing belt, the buffer belt and the extensible material dropping belt are arranged on the rack in sequence, the weighing belt is connected with the buffer belt, and the buffer belt is connected with the extensible material dropping belt; a weighing sensor is arranged below the weighing belt to weigh the rubber falling on the weighing belt; the extensible material dropping belt is a movable belt which can extend and retract along the running direction of the belt; the extensible material dropping belt comprises a moving shaft one, a moving shaft two, a moving shaft three, an extensible section belt, the belt body of the extensible section belt is folded and wound in a Z shape on the moving shaft one, the moving shaft two and the moving shaft three, and the moving shaft one, the moving shaft two and the moving shaft three are driven to move back and forth along the running direction of the belt by a driving device, thereby driving the extensible section belt to move back and forth; when the extensible section belt is driven to retract by the driving device, the moving shaft one, the moving shaft two and the moving shaft three also retract inwardly, the retracted extensible section belt is stored between the moving shaft three and a fixed shaft, and the sheet rubber on the belt falls flatly into a specified mold cavity of the material dropping disc due to inertia when the extensible section belt retracts.

[0010] Further, the buffer belt is arranged between the weighing belt and the extensible section belt to temporarily store the rubber so as not to affect the normal work of the front and rear functional sections, and the belt rotating shafts of the weighing belt, the buffer belt and the extensible material dropping belt are driven by a motor.

[0011] Further, the weighing belt is additionally provided with a photoelectric door at each fixed length to facilitate the cutting of rubber with equal length by the discharging mechanism; the weighing sensor is arranged below the weighing belt, and the value of the weighing sensor is input into a PLC (programmable logic controller) control system after being processed by a driver thereof.

[0012] Further, the driving device is a pneumatic cylinder or an electric cylinder; the moving shaft one, the moving shaft two and the moving shaft three are driven to move back and forth along the running direction of the belt by the pneumatic cylinder or the electric cylinder; a gear and a rack are arranged below the moving shaft two to bear the force generated by the speed imbalance on both sides of the moving shaft two when the moving shaft two moves, thereby protecting other structures of the extensible belt and improving the stability during operation.

[0013] Further, the extensible material dropping belt is provided with a material dropping disc below, the material dropping disc has four partitions, each rotation of 90° can align one partition with the direction of the extensible belt, thereby being capable of receiving and partitioning the rubber material of four mold cavities.

[0014] Further, the rubber weighing and transferring device further comprises a rack lifting mechanism arranged below the rack to lift the rack; the rack lifting mechanism comprises a lifting screw, a lifting nut, a lifting platform, a lifting motor, a fixed-tooth gear and a fixed-tooth motor, the lifting platform is arranged on the lifting nut, and the upper surface of the lifting platform contacts the middle layer plate of the rack when the lifting platform is lifted; the lifting screw is provided below a lifting gear pair and is driven by a lifting motor with a right-angle speed reducer, and the fixed-tooth gear pair on the outer edge of the lifting nut is driven by a fixed-tooth motor with a right-angle speed reducer; the lifting screw adopts a trapezoidal screw with a self-locking function, and can ensure the stability of the height of the platform in the case of power failure of the motor.

[0015] Further, the ground below the rack lifting mechanism is provided with a linear guide rail slider, a screw rod module and a lifting mechanism moving motor, the rack lifting mechanism is connected with the linear guide rail slider below and is driven to translate by the screw rod module and the linear guide rail slider, so that different cavity rubbers can be placed and transferred to the rack of the AGV, and the lifting mechanism moving motor can accurately control the horizontal stroke of the rack lifting mechanism.

[0016] The present application 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, the cutting is triggered by the photoelectric gate induction, the cut sheet rubber falls onto the weighing belt and is weighed by the weighing sensor; the cutting of one cavity rubber is divided into multiple sections, and the total weight of each cavity rubber is calculated by the control system, and the weight of one cavity rubber is filled, and the cutting is performed according to the required filling weight; after the sheet rubber is cut and falls onto the weighing belt, the sheet rubber sequentially passes through the weighing belt, the buffer belt and reaches the telescopic dropping belt, the sheet rubber is driven by the telescopic dropping belt to run to the front part of the telescopic dropping belt, then the telescopic dropping belt is rapidly contracted by the driving device, the sheet rubber is laid on the tray due to inertia, the sheet rubber is laid in one cavity of the tray due to inertia, the rack is lifted by the rack lifting mechanism after one cavity of rubber is filled, and is rotated by 90°, and the next cavity is filled according to the above-mentioned procedure; after four cavities of rubber are filled, the rack is moved out by the rack lifting mechanism, is placed at the outer end of the translation guide rail, and is taken away by the AGV to be delivered to the next process machine table.

[0017] Further, the weighing method specifically comprises the following steps: after the head part of the rubber of the first n-1 sections reaches the position of the photoelectric gate, the cutting is triggered by induction, the length of the first n-1 sections of rubber is controlled, the weight sum and the extrusion time of the first n-1 sections are measured, the weight sum of the first n-1 sections is divided by the extrusion time of the first n-1 sections to obtain the instantaneous weight speed, the total weight is subtracted from the weight sum to obtain the remaining weight, the remaining weight is divided by the instantaneous weight speed to obtain the extrusion time of the n-th section, and the n-th section is cut according to the timing and the total weight of one cavity of rubber is filled.

[0018] Further, the rack lifting mechanism is provided with a lifting motor and a fixed-rotating motor 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 abuts against the middle layer plate of the rack, and the lifting platform moves up and down by lifting the middle layer plate; at the same time, the fixed-rotating motor drives the gear disc of the lifting platform through the fixed-rotating gear, and the lifting motor and the fixed-rotating motor rotate synchronously, so that the lifting screw of the lifting screw nut pair and the lifting nut rotate in the same direction, the lifting platform rotates at a fixed height and a fixed angle, the material disc is filled with the four mold cavities, and then the rack lifting mechanism lifts the rack filled with materials through the lifting platform, and under the driving of the linear guide rail slider and the screw module below the rack lifting mechanism, the rack is moved along the linear guide rail to the outer end of the linear guide rail, the lifting platform is lowered by the lifting motor, the rack is lowered, and then the AGV carries the rack filled with the four mold cavities to the next process machine table.

[0019] The beneficial effects of the present application are:

[0020] 1、The present application drives the telescopic material falling belt section to move back and forth through the back and forth movement of the three moving shafts, and when the telescopic material falling belt section is quickly retracted, the inertia is used to make the sheet rubber flat and fall into the mold cavity of the material disc, which can effectively prevent the sheet rubber from rolling up and overlapping;

[0021] 2、The present application calculates the rubber material of each cavity, weighs and cuts according to the weight of each piece of rubber material and the total weight of the rubber material, and can accurately determine the rubber material of each cavity; the unique weighing method can control the amount of rubber material in each cavity, ensure product quality and prevent waste of rubber material;

[0022] 3、The present application can automatically collect rubber material through the automatic fixed-height and fixed-angle rotary material filling of the four mold cavities by the rack lifting mechanism, and can also automatically move out the rack, which is convenient for automatic transportation;

[0023] 4、The present application can adapt to products with different rubber material weights by placing the rubber material of the four mold cavities in the partition of the material disc;

[0024] 5、The present application uses AGV to transport sheet rubber, which is more flexible than using a conveyor belt throughout the transportation, and can reduce the use area of the site. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structure schematic view of the rubber weighing and transferring device;

[0026] Figure 2 It is a structure schematic view of the transferring device;

[0027] Figure 3 It is a cross-sectional view of the telescopic belt section;

[0028] Figure 4 Front view of the shelf lifting mechanism;

[0029] Figure 5 Side view of the shelf lifting mechanism;

[0030] Figure 6 A-A section view of the shelf lifting mechanism;

[0031] Figure 7 Schematic diagram of linear guide slider, screw module and servo motor;

[0032] Figure 8 Schematic diagram of partition structure of the tray;

[0033] Legend: (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 one; (305) moving shaft two; (306) moving shaft three; (4) shelf; (5) shelf lifting mechanism; (501) lifting platform; (502) lifting nut; (503) fixed gear; (504) fixed motor; (505) lifting screw; (506) lifting gear; (507) lifting motor; (6) speed reducer; (7) blanking tray; (8) linear guide slider; (9) screw module; (10) lifting mechanism moving motor; (11) rack. DETAILED DESCRIPTION

[0034] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will combine the drawings of the embodiments of the present application to clearly and completely describe the technical solutions of the embodiments of the present application. Figures 1-7 It is obvious that the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0035] It should be noted that all directional indications (such as up, down, etc.) in the embodiments of the present application are only used to explain the relative positional relationship of the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. Embodiment one

[0036] The present application provides a sheet rubber weighing and transferring device, which comprises a rack 11, a weighing belt 1, a buffer belt 2, an extendable blanking belt 3 and a blanking disc 7; the weighing belt 1, the buffer belt 2 and the extendable blanking belt 3 are arranged on the rack 11 in sequence, the weighing belt 1 is connected with the buffer belt 2, and the buffer belt 2 is connected with the extendable blanking belt 3; a weighing sensor 101 is arranged below the weighing belt 1 to weigh the rubber falling on the weighing belt 1; the extendable blanking belt 3 is a movable belt which can extend and retract along the running direction of the belt; the extendable blanking belt 3 comprises a moving shaft one 304, a moving shaft two 305, a moving shaft three 306 and an extendable section belt 303; the belt main body section of the extendable section belt 303 is folded and wound in a Z shape on the moving shaft one 304, the moving shaft two 305 and the moving shaft three 306, and the moving shaft one 304, the moving shaft two 305 and the moving shaft three 306 are driven to extend and retract along the running direction of the belt by a driving device 301, so as to drive the extendable section belt 303 to extend and retract; when the extendable section belt 303 is driven to retract by the driving device 301, the moving shaft one 304, the moving shaft two 305 and the moving shaft three 306 also retract inwardly, the retracted extendable section belt 303 is stored between the moving shaft three 306 and a fixed shaft, and the sheet rubber on the belt falls flat in a specified cavity of the blanking disc 7 due to inertia when the extendable section belt 303 retracts.

[0037] Further, the buffer belt 2 is arranged between the weighing belt 1 and the extendable section belt 303 to temporarily store the rubber so as not to affect the normal work of the front and rear functional sections, and the belt rotating shafts of the weighing belt 1, the buffer belt 2 and the extendable blanking belt 3 are driven by motors.

[0038] Further, the weighing belt 1 is additionally provided with a photoelectric door at each fixed length to facilitate the cutting of rubber of equal length by the discharging mechanism; the weighing sensor 101 is arranged below the weighing belt 1, and the value of the weighing sensor 101 is input into a PLC (programmable logic controller) control system after being processed by a driver thereof.

[0039] Further, the driving device 301 is a pneumatic cylinder or an electric cylinder; the moving shaft one 304, the moving shaft two 305 and the moving shaft three 306 are driven to extend and retract along the running direction of the belt by the pneumatic cylinder or the electric cylinder; a gear rack 302 is arranged below the moving shaft two 305 to bear the force generated by the speed imbalance on both sides of the moving shaft two 305 when the moving shaft two 305 moves, so as to protect other structures of the extendable belt and improve the stability during operation.

[0040] Further, the extendable blanking belt 3 is provided with the blanking disc 7 below, the blanking disc 7 has four partitions, each rotation of 90° can align one partition with the direction of the extendable belt, so as to be capable of receiving and partitioning the rubber of four cavities.

[0041] Further, the rubber weighing and transferring device further comprises a rack lifting mechanism 5 arranged below the rack 4, and the rack 4 is lifted by the rack lifting mechanism 5; the rack lifting mechanism 5 comprises a lifting screw rod 505, a lifting nut 502, a lifting platform 501, a lifting motor 507, a pair of fixed-tooth gears and a fixed-tooth motor, the lifting platform 501 is arranged on the lifting nut 502, and the upper surface of the lifting platform 501 is in contact with the middle layer plate of the rack 4 during lifting; the lifting screw rod 505 is below a pair of lifting gears 506 which are driven by the lifting motor 507 with a right-angle speed reducer 6, and a pair of fixed-tooth gears on the outer edge of the lifting nut 502 are driven by the fixed-tooth motor with a right-angle speed reducer 6; the lifting screw rod 505 adopts a trapezoidal screw rod and has a self-locking function, so that the stability of the platform height can be ensured in the case of power failure of the motor.

[0042] Further, the ground below the rack lifting mechanism 5 is provided with a linear guide rail sliding block 8, a screw rod module 9 and a lifting mechanism moving motor 10, the rack lifting mechanism 5 is connected with the linear guide rail sliding block 8 below and is driven to translate by the screw rod module 9 and the linear guide rail sliding block 8, so that different rubber materials in different mold cavities can be placed separately and transferred to the rack 4 of the AGV, and the lifting mechanism moving motor 10 can accurately control the horizontal stroke of the rack lifting mechanism 5.

[0043] The application also relates to a rubber weighing and transferring method using the above-mentioned sheet-shaped rubber weighing and transferring device, when the sheet-shaped rubber is extruded from a material nozzle, cutting is triggered by photoelectric gate induction, and the cut sheet-shaped rubber falls onto the weighing belt 1 to be weighed by the weighing sensor 101; the cutting of one mold cavity rubber is divided into multiple sections, and the total weight of the rubber of each mold cavity is calculated by the control system, and the weight of one cavity of rubber needs to be filled, and cutting is performed according to the required filling weight; after the sheet-shaped rubber is cut and falls onto the weighing belt 1, the sheet-shaped rubber sequentially passes through the weighing belt, the buffer belt 2 and reaches the telescopic material falling belt 3, the sheet-shaped rubber is driven by the telescopic material falling belt 3 to run to the front part of the telescopic material falling belt 3, then the telescopic material falling belt 3 is rapidly contracted by the driving device 301, the sheet-shaped rubber is laid on the material falling disc 7 due to inertia, the sheet-shaped rubber is laid in one mold cavity of the material falling disc 7 due to inertia, the rack 4 is lifted up by the rack lifting mechanism 5 after one mold cavity of rubber is filled, and then the rack 4 is rotated by 90°, and another mold cavity is filled according to the above-mentioned procedure; after four mold cavities of rubber are filled, the rack 4 is moved out by the rack lifting mechanism 5, and is placed at the outer end of the translation guide rail, and then the full rack 4 filled with four mold cavities of rubber is taken away by the AGV and is distributed to the next process machine table.

[0044] Further, the weighing mode is specifically that after the head of the first n-1 sections of the rubber material reaches the photoelectric gate position, the induction cutting is triggered, the length of the first n-1 sections of the rubber material is controlled, the weight sum of the first n-1 sections of the rubber material and the extrusion time sum are measured, and then the weight sum of the first n-1 sections of the rubber material is divided by the extrusion time sum of the first n-1 sections to obtain the instantaneous weight speed, the remaining weight is obtained by subtracting the weight sum from the total weight, and the extrusion time of the n section is obtained by dividing the remaining weight by the instantaneous weight speed, and the cutting is timed according to the same, and the cutting is performed according to the total weight of the rubber material in the last section.

[0045] Further, the carrying of the rack 4 out by the rack lifting mechanism 5 is that the lifting motor 507 and the fixed-rotation motor are arranged on the rack lifting mechanism 5, the lifting motor 507 is connected to the lifting platform 501 through a set of lifting screw 505 nut pairs, the upper surface of the lifting platform 501 abuts against the middle layer plate of the rack 4, and the rack 4 is driven to move up and down by the lifting of the middle layer plate; meanwhile, the fixed-rotation motor drives the gear disc of the lifting platform 501 through the fixed-rotation gear, the lifting screw 505 nut pairs are relatively static and rotate in the same direction through the synchronous rotation of the lifting motor 507 and the fixed-rotation motor, the lifting platform 501 is rotated at a fixed height and a fixed angle, the loading of the four mold cavities of the material falling disc 7 is completed, after the material falling disc 7 is filled with materials, the rack lifting mechanism 5 lifts the rack 4 filled with materials through the lifting platform 501, under the driving of the linear guide rail sliding block 8 and the screw module 9 below the rack lifting mechanism 5, the rack 4 is moved along the linear guide rail to the outer end of the linear guide rail, the lifting platform 501 is driven to descend by the lifting motor 507, and the rack 4 is put down, and then the AGV carries away the rack 4 filled with the rubber materials of the four mold cavities to the next process machine table.

[0046] The beneficial effects of the present application are:

[0047] 1. The present application drives the telescopic material falling belt 3 to move back and forth through the back and forth movement of the three moving shafts, and when the telescopic material falling belt 3 is quickly retracted, the sheet-shaped rubber is laid flat into the mold cavity of the material falling disc 7 by inertia, which can effectively prevent the sheet-shaped rubber from rolling up and overlapping;

[0048] 2. The present application calculates the rubber material of each cavity, weighs and cuts according to the weight of each piece of rubber material and the total weight of the rubber material, which can accurately determine the rubber material of each cavity; the unique weighing method can control the amount of rubber material of each cavity, ensure the product quality and prevent waste of rubber material;

[0049] 3. The present application automatically rotates and loads the four mold cavities through the rack lifting mechanism 5, which can automatically collect the rubber material and automatically move out the rack 4, which is convenient for automatic transportation;

[0050] 4、The blanking disc 7 of the present application adopts the glue material in four die cavities in different areas, which can adapt to the products with different glue material weight requirements;

[0051] 5、The AGV is used for transporting the sheet rubber, which is more flexible than the whole process using the conveying belt, and can reduce the site area.

Claims

1. A sheet rubber weighing transfer device, comprising a rack (11), a weighing belt (1), a buffer belt (2), an elastic falling belt (3), and a falling disc (7); the weighing belt (1), the buffer belt (2), and the elastic falling belt (3) are sequentially arranged on the rack (11), the weighing belt (1) is connected to the buffer belt (2), and the buffer belt (2) is connected to the elastic falling belt (3); a weighing sensor (101) is arranged below the weighing belt (1) to weigh rubber falling on the weighing belt (1); the elastic falling belt (3) is a movable belt capable of extending and retracting back and forth along the belt running direction; the elastic falling belt (3) comprises a moving shaft one (304), a moving shaft two (305), a moving shaft three (306), and an elastic section belt (303), the belt main body of the elastic section belt (303) is folded and wound in a Z shape on the moving shaft one (304), the moving shaft two (305), and the moving shaft three (306), and the moving shaft one (304), the moving shaft two (305), and the moving shaft three (306) are driven by a driving device (301) to extend and retract back and forth along the belt running direction, thereby driving the elastic section belt (303) to extend and retract; when the elastic section belt (303) is retracted by the driving device (301), the moving shaft one (304), the moving shaft two (305), and the moving shaft three (306) also retract inward, the retracted elastic section belt (303) is stored between the moving shaft three (306) and a fixed shaft, and the sheet rubber on the belt falls straight into a specified mold cavity of the falling disc (7) due to inertia when the elastic section belt (303) retracts.

2. The sheet rubber weighing and transferring device according to claim 1, wherein A buffer belt (2) is arranged between the weighing belt (1) and the elastic section belt (303) to temporarily store rubber so as not to affect the normal work of the front and rear functional sections, and the belt rotating shafts of the weighing belt (1), the buffer belt (2), and the elastic falling belt (3) are driven by motors.

3. The sheet rubber weighing and transferring device according to claim 1, wherein A photoelectric door is additionally arranged at each fixed length of the weighing belt (1) to facilitate the cutting of rubber of equal length by a discharging mechanism; the weighing sensor (101) is arranged below the weighing belt (1), and the value of the weighing sensor (101) is input into a PLC control system after being processed by a driver thereof.

4. The sheet rubber weighing and transferring device according to claim 1, wherein The driving device (301) is a pneumatic 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 pneumatic cylinder or the electric cylinder to extend and retract back and forth along the belt running direction; a gear rack (302) is arranged below the moving shaft two (305) to bear the force generated by the speed imbalance on both sides of the moving shaft two (305) during movement, thereby protecting other structures of the elastic belt and improving the stability during operation.

5. The sheet rubber weighing and transferring device according to claim 1, wherein A falling disc (7) is arranged below the elastic falling belt (3), the falling disc (7) has four partitions, each rotation of 90° can align one partition with the direction of the elastic belt, thereby being capable of receiving and partitioning rubber of four mold cavities.

6. The sheet rubber weighing and transferring device according to claim 1, wherein The rubber weighing transfer device further comprises a rack lifting mechanism (5) arranged below the rack (4) and lifting the rack (4) through the rack lifting mechanism (5); the rack lifting mechanism (5) comprises a lifting screw rod (505), a lifting nut (502), a lifting platform (501), a lifting motor (507), a fixed-tooth gear pair and a fixed-tooth motor; the lifting platform (501) is arranged on the lifting nut (502), and the upper surface of the lifting platform (501) contacts the middle layer plate of the rack (4) when lifting; the lifting screw rod (505) is driven by a lifting gear pair (506) and the lifting motor (507) with a right-angle reducer (6), and the fixed-tooth gear pair on the outer edge of the lifting nut (502) is driven by the fixed-tooth motor with a right-angle reducer (6); the lifting screw rod (505) adopts a trapezoidal screw rod with a self-locking function, and can ensure the stability of the platform height in the case of power failure of the motor.

7. The sheet rubber weighing and transferring device according to claim 6, wherein The ground below the rack lifting mechanism (5) is provided with a linear guide rail sliding block (8), a screw rod module (9) and a lifting mechanism moving motor (10); the rack lifting mechanism (5) is connected with the linear guide rail sliding block (8) below and is driven to translate by the screw rod module (9) and the linear guide rail sliding block (8), so that different mold cavity rubbers can be placed separately and transferred to the rack (4) of the AGV, and the lifting mechanism moving motor (10) can accurately control the horizontal stroke of the rack lifting mechanism (5).

8. A method of rubber weighing and transfer, characterized by, When the sheet rubber is extruded from the nozzle, the cutting is triggered by the photoelectric door induction, and the cut sheet rubber falls onto the weighing belt (1) and is weighed by the weighing sensor (101); one mold cavity rubber is cut into multiple sections, and when the last section of the sheet rubber passes, the control system calculates the total weight of the rubber of each mold cavity and the weight of the rubber needed to be filled in one cavity, and cuts according to the weight needed to be filled; after the sheet rubber is cut and falls into the weighing belt (1), it will pass through the weighing belt (1) and the buffer belt (2) in turn to reach the telescopic material falling belt (3), the sheet rubber is driven by the telescopic material falling belt (3) to run to the front part of the telescopic material falling belt (3), then the driving device (301) drives the telescopic material falling belt (3) to shrink rapidly, and the sheet rubber falls flat on the material falling disc (7) due to inertia, and falls flat in one mold cavity of the material falling disc (7) due to inertia, after one mold cavity of rubber is filled, the rack (4) is lifted up by the rack lifting mechanism (5), and then rotated by 90°, and the next mold cavity is filled according to the foregoing procedure; after four mold cavities of rubber are filled, the rack (4) is carried out by the rack lifting mechanism (5), placed at the outer end of the translation guide rail, and then taken away by the AGV to be distributed to the next process machine table.

9. A method of rubber weighing and transferring according to claim 8, characterized in that, The weighing mode is specifically that after the head of the first n-1 sections of rubber material reaches the photoelectric gate position, the induction cutting is triggered, the length of the first n-1 sections of rubber is controlled, the weight sum of the first n-1 sections of rubber, the extrusion time sum of the first n-1 sections of rubber, and then the instantaneous weight speed is obtained by dividing the weight sum of the first n-1 sections of rubber by the extrusion time sum of the first n-1 sections of rubber, the remaining weight is obtained by subtracting the weight sum from the total weight, and the extrusion time of the n-th section is obtained by dividing the remaining weight by the instantaneous weight speed, and the timing cutting is based on this, and the cutting is performed according to the total weight of the rubber in the last section.

10. The method of claim 8, wherein The material rack (4) is carried out by the material rack lifting mechanism (5) by providing a lifting motor (507) and a fixed-rotating motor on the material rack lifting mechanism (5); 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) abuts against the middle layer plate of the material rack (4), and the material rack (4) is driven to move up and down by the jacking middle layer plate; at the same time, the fixed-rotating motor drives the gear disc of the lifting platform (501) through the fixed-rotating gear, the lifting motor (507) and the fixed-rotating motor rotate synchronously, the lifting screw (505) of the lifting screw nut pair and the lifting nut (502) rotate in the same direction, the lifting platform (501) rotates at a fixed height and a fixed angle, and the four mold cavities of the material falling disc (7) are filled; after the material falling disc (7) is filled with materials, the material rack lifting mechanism (5) lifts the material rack (4) filled with materials through the lifting platform (501), and under the driving of the linear guide rail slider (8) and the screw module (9) below the material rack lifting mechanism (5), the material rack (4) is moved along the linear guide rail to the outer end of the linear guide rail, the lifting platform (501) is lowered and the material rack (4) is put down by the lifting motor (507), and then the AGV carries away the material rack (4) filled with four mold cavity rubbers and distributes it to the next process machine table.

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