High-speed automatic electric quantitative packaging machine

Abstract

This invention belongs to the technical field of packaging machinery and equipment, and relates to a high-speed automatic electric quantitative packaging machine, comprising: a metering chamber structure for metering the weight of granular materials and discharging the nominal weight of granular materials; a buffer cone fixedly installed inside the metering hopper of the metering chamber structure; a feeding chamber structure installed at the inlet end of the metering chamber structure to discharge materials into the metering chamber structure; the feeding hopper of the feeding chamber structure is controlled by a feeding hopper valve drive component to achieve on / off adjustment; the granular materials discharged from the feeding chamber structure are buffered by the buffer cone and fall into the metering hopper; and a bag clamping hopper structure installed at the outlet end of the metering chamber structure to open the bag to receive the granular materials discharged from the metering chamber structure; the bag clamping base of the bag clamping hopper structure is provided with an adjustable rubber block assembly to accommodate various bag sizes and models. This hopper scale ensures a stable production cycle during operation and minimizes the impact on the metering hopper during weighing and discharging.

Description

Technical Field

[0001] This invention belongs to the technical field of packaging machinery and equipment, and relates to a high-speed automatic electric quantitative packaging machine. Background Technology

[0002] Weighing granular materials is an essential step in the packaging industry. Accurate weighing ensures consistent weight in each bag during the filling process. Currently, high-speed automatic electric quantitative packaging machines suffer from several problems. The pneumatic structure requires auxiliary components such as air compressors and air pipelines, leading to structural complexity. The combined pneumatic and electric structure suffers from issues such as the hopper valve failing to automatically reset or lock in the event of a power outage. Furthermore, in production, the granular material weighing scales used for packaging delivers granular material directly into the weighing hopper. The significant impact force under gravity can degrade the weighing accuracy of the load cells over time. Additionally, existing granular material weighing scales are typically only suitable for bags of specific sizes, limiting their applicability. A particularly important point is that, in the event of a sudden power outage during the use of existing weighing and packaging scales, if the discharge port of the feeding structure happens to be open, the discharge port of the weighing and packaging scale will remain open and continue to discharge material, which will have a significant impact on the production cycle. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a high-speed automatic electric quantitative packaging machine. This hopper scale can achieve power-off self-locking during operation to ensure a stable production cycle, and the impact on the weighing hopper is minimized during the weighing and feeding process.

[0004] According to the technical solution of the present invention: a high-speed automatic electric quantitative packaging machine, characterized in that it includes: a metering chamber structure, which is used to meter the weight of granular materials and to lower the nominal weight of granular materials, and a buffer cone is fixedly installed in the inner cavity of the metering hopper of the metering chamber structure;

[0005] The feeding chamber structure is installed at the inlet end of the metering chamber structure to discharge material into the metering chamber structure. The feeding hopper of the feeding chamber structure is controlled by the feeding hopper valve drive component to achieve on / off adjustment. The granular material discharged from the feeding chamber structure is buffered by the buffer cone and falls into the metering hopper.

[0006] The bag clamping hopper structure is installed at the discharge end of the metering chamber structure to open the bag and receive the granular material released from the metering chamber structure. The bag clamping base of the bag clamping hopper structure is equipped with an adjustable rubber block assembly to accommodate bags of various sizes and models.

[0007] As a further improvement of the present invention, the feeding chamber structure includes a feeding hopper mounting base, the feeding hopper mounting base has a built-in feeding hopper, and the lower end discharge port of the feeding hopper is opened and closed by a feeding hopper valve. The feeding hopper valve is rotated and adjusted by a feeding hopper valve drive assembly installed on the feeding hopper mounting base.

[0008] The lower end of the feeding hopper has an arc-shaped discharge port, and the feeding hopper valve matches the discharge port of the feeding hopper. The edge of the feeding hopper valve has a guide notch.

[0009] As a further improvement of the present invention, the feed hopper valve drive assembly includes a rotating shaft, with both ends of the rotating shaft rotatably mounted on the side plates of the feed hopper mounting base, and the rotating shaft being located on the outside of the feed hopper. A driven gear is mounted on the input end of the rotating shaft, and the driven gear meshes with a driving gear mounted on the output shaft of the drive motor. The drive motor is mounted on the feed hopper mounting base. The driven gear is a sector gear. When the driven gear rotates to one extreme position, the feed hopper valve opens to its maximum degree. When the driven gear rotates to another extreme position, the feed hopper valve completely closes the outlet of the feed hopper.

[0010] As a further improvement of the present invention, the feeding hopper valve includes an arc-shaped valve plate, with the two sides of the valve plate bent vertically in the width direction to form guide connecting plates. The lower part of the feeding hopper is fitted between the two guide connecting plates, and the upper part of the guide connecting plates is connected to a valve swing arm, which is fixedly connected to a rotating shaft. The upper end of the valve swing arm is constructed with a clamping structure, which is locked onto the rotating shaft. The upper part of the inner cavity of the feeding hopper is constructed as a flared guide slope.

[0011] As a further improvement of the present invention, the metering chamber structure includes a metering shell, a weighing sensor is installed on the top surface of the metering shell, the weighing rod of the weighing sensor passes through the top plate of the metering shell, and a weighing seat is fixed at the lower end of the weighing rod. The weighing seat is fixedly connected to the metering hopper, and a metering valve assembly is installed on the metering hopper to control the opening and closing of the discharge port at the lower end of the metering hopper.

[0012] The metering valve assembly includes a metering seat, which is fixed to the outer surface of the metering hopper, and a first valve and a second valve are hinged to the metering seat;

[0013] The metering valve assembly is driven by a drive assembly installed on the side of the metering hopper to achieve the opening and closing regulation of the first valve and the second valve.

[0014] As a further improvement of the present invention, three sets of weighing sensors are installed on the top surface of the metering housing, and the three sets of weighing sensors form an equilateral triangle.

[0015] The drive assembly includes a reducer installed on the side of the measuring hopper. A first servo motor is installed at the input end of the reducer. The output shaft of the reducer passes through the measuring hopper. A first rocker arm and a second rocker arm are respectively installed at the two axial ends of the output shaft. The first rocker arm is hinged to one end of a first connecting rod, and the second rocker arm is hinged to one end of a second connecting rod. The other end of the first connecting rod is connected to a first valve, and the other end of the second connecting rod is connected to a second valve.

[0016] The output shaft has positioning planes at both ends of its axial direction. The first rocker arm and the second rocker arm are locked to the corresponding positioning planes through their respective clamping structures, so that the first rocker arm and the second rocker arm rotate synchronously with the output shaft.

[0017] As a further improvement of the present invention, the metering housing includes a housing frame and housing door panels. A housing door panel is respectively provided on the outer side of the housing frame corresponding to both ends of the output shaft axial direction. The housing door panels are detachably connected to the housing frame. The housing door panels are detachably connected to the housing frame by a door lock. The discharge port of the metering hopper is constructed as two symmetrical inclined openings. The first valve and the second valve are respectively matched with the corresponding inclined openings to control the opening and closing of the corresponding inclined openings. Multiple reinforcing ribs are respectively provided on the back of the first valve and the second valve.

[0018] As a further improvement of the present invention, the bag clamping structure includes a bag clamping base, a bag clamping bucket is installed on the top surface of the bag clamping base, and a bag clamper is installed on the bottom surface of the bag clamping base. The bag clamper includes a first bag clamping bucket and a second bag clamping bucket. The first bag clamping bucket and the second bag clamping bucket can be opened and closed to achieve cooperation with the rubber block assembly provided on the bag clamping base, thereby opening the bag.

[0019] A linkage component is provided on the bag clamping base. The linkage component is connected to the first bag clamping hopper and the second bag clamping hopper to drive the first bag clamping hopper and the second bag clamping hopper to open and close.

[0020] A power unit is installed on the bag clamp, which provides power to the linkage unit.

[0021] As a further improvement of the present invention, the first clamping bag bucket is rotatably connected to the clamping bag base via a first rotating shaft, and the second clamping bag bucket is rotatably connected to the clamping bag base via a second rotating shaft;

[0022] The linkage component includes a first linkage component and / or a second linkage component, with the first linkage component and the second linkage component respectively located on both sides of the power component;

[0023] The first linkage component includes a first rocker arm fixed to one end of the output shaft of the power component, the first rocker arm being rotatably connected to one end of the first connecting rod, the other end of the first connecting rod being hinged to the first bag clamping bucket drive plate, the first bag clamping bucket drive plate being fixed to the outer surface of the first bag clamping bucket, one axial end of the first rotating shaft being fixed to the first driving rod, one end of the second rotating shaft being fixed to the second driving rod, one end of the first synchronizing rod being hinged to the first driving rod, and the other end of the first synchronizing rod being hinged to the second driving rod.

[0024] The second linkage component includes a second rocker arm fixed to the other end of the output shaft of the power component. The second rocker arm is rotatably connected to one end of the second connecting rod. The other end of the first rotating shaft is fixed with a third drive rod. The second rotating shaft is fixed with a second bag clamping bucket drive rod at one end corresponding to the third drive rod. One end of the second bag clamping bucket drive rod is connected to the third drive rod through a second synchronizing rod. The other end of the second bag clamping bucket drive rod is rotatably connected to the other end of the second connecting rod.

[0025] As a further improvement of the present invention, the power component includes a reducer, which is fixed to the side of the bag clamping hopper by a reducer mounting seat. A second servo motor is installed at the input end of the reducer, and the second servo motor drives the reducer. The rubber block assembly includes a limiting frame and a rubber block, which is fitted into the limiting frame and connected to the bag clamping base by bolts.

[0026] The technical advantages of this invention are as follows: the product has a reasonable and ingenious structure, adopts a purely electrically controlled structure, and can achieve self-locking of the hopper valve in the event of a sudden power failure during operation, and can ensure that the feeding chamber structure releases materials in an orderly manner according to the production rhythm; in addition, the weighing sensor in this invention adopts a pin-type structure, which can achieve a reliable and accurate measurement structure; at the same time, the product of this invention can be used for various specifications and models of bags, and has a wide range of applications. Attached Figure Description

[0027] Figure 1 This is the front view of the present invention.

[0028] Figure 2 for Figure 1 The left view.

[0029] Figure 3 for Figure 2 Top view.

[0030] Figure 4 for Figure 1 BB-direction sectional view.

[0031] Figure 5 This is a perspective view of the present invention.

[0032] Figure 6 This is a schematic diagram of the feeding chamber structure in this invention.

[0033] Figure 7 This is a schematic diagram of the feeding chamber structure after the side cover has been removed.

[0034] Figure 8 This is a schematic diagram of the feeding chamber structure after the side cover has been removed.

[0035] Figure 9 This is a schematic diagram of the feeding hopper valve in the feeding chamber structure.

[0036] Figure 10 This is a top view of the feeding chamber structure.

[0037] Figure 11 This is a schematic diagram of the metrology chamber structure in this invention.

[0038] Figure 12 A schematic diagram of the metrology chamber structure without the metrology shell.

[0039] Figure 13 A schematic diagram of the metrology chamber structure without the metrology shell.

[0040] Figure 14 This is a top view of the metrology room structure.

[0041] Figure 15 This is a front view of the bag-clamping bucket structure in this invention.

[0042] Figure 16 for Figure 15 The left view.

[0043] Figure 17 for Figure 15 A sectional view along the AA direction.

[0044] Figure 18 for Figure 16 Top view.

[0045] Figure 19 This is a perspective view of the present invention. Detailed Implementation

[0046] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0047] Figures 1-19The system includes a metering chamber structure 10, a metering housing 10-1, a housing frame 10-1-1, a housing door panel 10-1-2, a door lock 10-1-3, a weighing sensor 10-2, a weighing boom 10-2-1, a metering hopper 10-3, a first servo motor 10-4, a reducer 10-5, an output shaft 10-5-1, a first rocker arm 10-6, a first connecting rod 10-7, a second rocker arm 10-8, and a second connecting rod. 10-9, Metering valve; 10-10, Metering seat; 10-10-1, First valve; 10-10-2, Second valve; 10-10-3, Weighing seat; 10-11, Buffer cone; 10-12, Feeding chamber structure; 20, Feeding hopper mounting seat; 20-1, Feeding hopper; 20-2, Feeding hopper valve; 20-3, Valve plate; 20-3-1, Guide connecting plate; 20-3-2, Rotating shaft; 20-4, Valve swing arm; 20-5 20-6 drive gear, 20-7 driven gear, 20-8 drive motor, 20-9 sensor, 30 bag clamping bucket structure, 30-1 bag clamping bucket, 30-2 reducer, 30-3 second servo motor, 30-4 first rocker arm, 30-5 first connecting rod, 30-6 bag clamping base, 30-7 bag clamper, 30-7 first bag clamping bucket, 30-7-2 second bag clamping bucket, 30-8 rubber block assembly, limit Position frame 30-8-1, rubber block 30-8-2, second connecting rod 30-9, first synchronizing rod 30-10, second bag clamping arm drive rod 30-11, second rocker arm 30-12, first bag clamping bucket drive plate 30-13, first rotating shaft 30-14, second rotating shaft 30-15, second synchronizing rod 30-16, first drive rod 30-17, second drive rod 30-18, third drive rod 30-19, etc.

[0048] like Figures 1-19 As shown, the present invention is a high-speed automatic electric quantitative packaging machine, including a metering chamber structure 10, which is used to meter the weight of granular materials and to release the nominal weight of granular materials. A buffer cone 10-12 is fixedly installed in the inner cavity of the metering hopper 10-3 of the metering chamber structure 10.

[0049] The feeding chamber structure 20 is installed at the feed end of the metering chamber structure 10 to discharge material into the metering chamber structure 10. The feeding hopper 20-2 of the feeding chamber structure 20 is controlled by the feeding hopper valve drive assembly to achieve on / off adjustment. The granular material discharged from the feeding chamber structure 20 is buffered by the buffer cone 10-12 and falls into the metering hopper 10-3.

[0050] The bag clamping hopper structure 30 is installed at the discharge end of the metering chamber structure 10 to open the bag and receive the granular material released from the metering chamber structure 10. The bag clamping base 30-6 of the bag clamping hopper structure 30 is provided with an adjustable rubber block assembly 8 to accommodate bags of various specifications and models.

[0051] When the product of this invention is in operation, the external granular material is placed into the feeding chamber structure 20. The feeding hopper valve drive assembly of the feeding chamber structure 20 controls the dropping rhythm of the granular material. The metering chamber structure 10 receives the granular material dropped from the feeding chamber structure 20 and weighs the received material. When the weight of the granular material in the metering chamber structure 10 reaches the preset nominal weight, the metering chamber structure 10 releases the weighed nominal granular material. It can be understood that during the operation, the granular material in the feeding chamber structure 20 first falls onto the buffer cone 10-12. After being buffered by the buffer cone 10-12, the granular material falls into the metering chamber structure 10, which can effectively reduce the impact force on the metering chamber structure 10 during the falling process.

[0052] like Figure 6-10 As shown, the feeding chamber structure 20 includes a feeding hopper mounting base 20-1, which houses a feeding hopper 20-2. The upper end of the feeding hopper 20-2 is provided with a horizontal bend, which is fixedly connected to the upper end of the feeding hopper mounting base 20-1. In actual production, welding connection is usually adopted.

[0053] The lower discharge port of the feed hopper 20-2 is opened and closed by the feed hopper valve 20-3, which is rotated and adjusted by the feed hopper valve drive assembly installed on the feed hopper mounting base 20-1.

[0054] To ensure that the feed hopper valve 20-3 can reliably open and close the discharge port of the feed hopper 20-2 during operation, the lower discharge port of the feed hopper 20-2 is set in an arc shape. The feed hopper valve 20-3 matches the discharge port of the feed hopper 20-2. The edge of the feed hopper valve 20-3 is provided with a guide notch 20-3-1, which is usually constructed in a triangular shape.

[0055] The feed hopper valve drive assembly includes a rotating shaft 20-4, with both ends of the shaft 20-4 rotatably mounted on the side plates of the feed hopper mounting base 20-1. The shaft 20-4 is positioned outside the feed hopper 20-2. During operation, the shaft 20-4 does not contact the material, maximizing material cleanliness and ensuring it is unaffected by the shaft. Furthermore, a driven gear 20-7 is mounted at the input end of the shaft 20-4. The driven gear 20-7 meshes with a driving gear 20-6 mounted on the output shaft of a drive motor 20-8, which is mounted on the feed hopper mounting base 1.

[0056] Understandably, the driven gear 20-7 is a sector gear. When the driven gear 20-7 rotates to one extreme position, the feed hopper valve 20-3 opens to its maximum degree; when the driven gear 20-7 rotates to another extreme position, the feed hopper valve 20-3 completely closes the discharge port of the feed hopper 20-2. To ensure that the feed hopper valve 20-3 is in the closed state at the initial stage of operation, a sensor 20-9 is also installed on the feed hopper mounting base 20-1. The sensor 20-9 is used to detect the zero position of the feed hopper valve 20-3.

[0057] The feeding hopper valve 20-3 includes an arc-shaped valve plate 20-3-1. The two sides of the valve plate 20-3-1 are perpendicularly bent in the width direction to form guide connecting plates 20-3-2. The lower part of the feeding hopper 20-2 is fitted between the two guide connecting plates 20-3-2. The upper part of the guide connecting plates 20-3-2 is connected to a valve swing arm 20-5, which is fixedly connected to a rotating shaft 20-4. There is a certain gap between the guide connecting plates 20-3-2 and the feeding hopper 20-2. The guide connecting plates 20-3-2 provide guidance during the opening and closing of the feeding hopper valve 20-3. In practice, in order to ensure that the feed hopper valve 20-3 can reliably seal and close the discharge port of the feed hopper 20-2 when the power is off, a spring is provided on the inner side of the driven gear 20-7. One end of the spring is connected to the driven gear 20-7, and the other end is connected to the feed hopper mounting base 20-1. Thus, when the feed hopper valve 20-3 is in the open state, the feed hopper valve 20-3 is subjected to the tension of the spring. This tension makes the open feed hopper valve 20-3 tend to close, so that the sector-shaped driven gear 20-7 can be pulled back to the closed state when the power is off. Understandably, in order to ensure that the feed hopper valve 20-3 can reliably close the discharge port of the feed hopper 20-2 in the event of a power outage, the arc-shaped structure of the lower discharge port of the feed hopper 20-2 is designed such that when the feed hopper valve 20-3 closes the discharge port of the feed hopper 20-2, the horizontal part of the feed hopper valve 20-3 matches the outer side of the feed hopper 20-2. That is, the arc-shaped opening of the feed hopper 20-2 is constructed with an arc-shaped transition from the lower end of one side surface of the feed hopper 20-2 to the upper part of the other side surface of the feed hopper 20-2. The aforementioned one side surface and the other side surface are two opposing surfaces of the feed hopper 20-2. This allows the feed hopper valve 20-3 to be effectively reset and close the discharge port of the feed hopper 20-2 when a power outage occurs during operation, as it is subjected to both the tension of the spring and its own gravity.

[0058] The upper end of the valve swing arm 20-5 is equipped with a clamp structure, which is locked onto the rotating shaft 20-4. When the rotating shaft 20-4 rotates, the valve swing arm 20-5 drives the feeding hopper valve 20-3 to rotate synchronously. The upper part of the inner cavity of the feeding hopper 20-2 is constructed as a flared guide slope to facilitate the rapid discharge of materials during operation.

[0059] like Figures 11-14 As shown, the metering chamber structure 10 includes a metering housing 10-1. A weighing sensor 10-2 is installed on the top surface of the metering housing 10-1. The weighing rod 10-2-1 of the weighing sensor 10-2 passes through the top plate of the metering housing 10-1, and a weighing seat 10-11 is fixed at the lower end of the weighing rod 10-2-1. The weighing seat 10-11 is fixedly connected to the metering hopper 10-3. A metering valve assembly 10-10 is installed on the metering hopper 10-3 to control the opening and closing of the discharge port at the lower end of the metering hopper 10-3.

[0060] The metering valve assembly 10-10 includes a metering seat 10-10-1, which is fixed to the outer surface of the metering hopper 10-3. A first valve 10-10-2 and a second valve 10-10-3 are hinged to the metering seat 10-10-1.

[0061] The metering valve assembly 10-10 is driven by a drive assembly mounted on the side of the metering hopper 10-3 to achieve the opening and closing regulation of the first valve 10-10-2 and the second valve 10-10-3.

[0062] Three sets of weighing sensors 10-2 are installed on the top surface of the metering housing 10-1, and the three sets of weighing sensors 10-2 form an equilateral triangle.

[0063] The drive assembly includes a reducer 10-5 mounted on the side of the measuring hopper 10-3. A first servo motor 10-4 is mounted on the input end of the reducer 10-5. The output shaft 10-5-1 of the reducer 10-5 passes through the measuring hopper 10-3. A first rocker arm 10-6 and a second rocker arm 10-8 are mounted on the two axial ends of the output shaft 10-5-1, respectively. The first rocker arm 10-6 is hinged to one end of the first connecting rod 10-7, and the second rocker arm 10-8 is hinged to one end of the second connecting rod 10-9. The other end of the first connecting rod 10-7 is connected to the first valve 10-10-2, and the other end of the second connecting rod 10-9 is connected to the second valve 10-10-3.

[0064] Positioning planes are provided at both ends of the output shaft 10-5-1. The first rocker arm 10-6 and the second rocker arm 10-8 are locked to the corresponding positioning planes through their respective clamping structures, so that the first rocker arm 10-6 and the second rocker arm 10-8 rotate synchronously with the output shaft 10-5-1.

[0065] The metering housing 10-1 includes a housing frame 10-1-1 and a housing door panel 10-1-2. A housing door panel 10-1-2 is respectively provided on the outer side of the housing frame 10-1-1 corresponding to the two axial ends of the output shaft 10-5-1. The housing door panel 10-1-2 is detachably connected to the housing frame 10-1-1. The housing door panel 10-1-2 is detachably connected to the housing frame 10-1-1 via a door lock 10-1-3. The discharge port of the metering hopper 10-3 is constructed as two symmetrical inclined openings. The first valve 10-10-2 and the second valve 10-10-3 are respectively matched with the corresponding inclined openings to control the opening and closing of the corresponding inclined openings. Multiple reinforcing ribs are respectively provided on the back of the first valve 10-10-2 and the second valve 10-10-3.

[0066] When the metering chamber structure 10 is in operation, it receives material from the hopper. When receiving granular material, the hopper valve is closed. To reduce the impact of the falling granular material on the metering hopper 10-3, a buffer cone 10-12 is installed inside the metering hopper 10-3. The outer surface of the buffer cone 10-12 is supported and fixed to the middle part of the metering hopper 10-3 by connecting ribs. During the falling process, the granular material first falls onto the buffer cone 10-12, and then is cushioned as it falls onto the closed valve below. After the material in the weighing hopper 10-3 accumulates to the preset weight, the first servo motor 10-4 receives the instruction to start operating. It drives the first valve 10-10-2 via the first rocker arm 10-6 and the first connecting rod 10-7, and drives the second valve 10-10-3 via the second rocker arm 10-8 and the second connecting rod 10-9. This opens the first valve 10-10-2 and the second valve 10-10-3, allowing the weighed and measured granular material to be released from the weighing hopper 10-3 into the receiving bag.

[0067] like Figures 15-19 As shown, the bag clamping structure 30 includes a bag clamping base 30-6, a bag clamping bucket 30-1 is installed on the top surface of the bag clamping base 30-6, and a bag clamping device 30-7 is installed on the bottom surface of the bag clamping base 30-6. The bag clamping device 30-7 includes a first bag clamping bucket 30-7-1 and a second bag clamping bucket 30-7-2. The first bag clamping bucket 30-7-1 and the second bag clamping bucket 30-7-2 can be opened and closed to cooperate with the rubber block assembly 30-8 provided on the bag clamping base 30-6, thereby opening the bag.

[0068] A linkage component is provided on the bag clamping base 30-6. The linkage component is connected to the first bag clamping hopper 30-7-1 and the second bag clamping hopper 30-7-2 to drive the first bag clamping hopper 30-7-1 and the second bag clamping hopper 30-7-2 to open and close.

[0069] A power assembly is installed on the bag clamp 30-1. The power assembly provides power to the linkage assembly to drive the linkage assembly to perform the opening and closing actions of the first bag clamp 30-7-1 and the second bag clamp 30-7-2.

[0070] The first bag clamping hopper 30-7-1 is rotatably connected to the bag clamping base 30-6 via the first rotating shaft 30-14, and the second bag clamping hopper 30-7-2 is rotatably connected to the bag clamping base 30-6 via the second rotating shaft 30-15.

[0071] The linkage components include a first linkage component and / or a second linkage component, which are respectively located on both sides of the power component. In practice, the product of this invention may only have one set of the first linkage component or only one set of the second linkage component. In this embodiment, both the first and second linkage components are set simultaneously. This arrangement ensures that the first bag clamp 30-7-1 and the second bag clamp 30-7-2 operate smoothly and reliably. To ensure a secure closure when the first bag holder 30-7-1 and the second bag holder 30-7-2 are closed during use, the lower parts of both bag holders are bent towards each other. After closure, the lower part of the second bag holder 30-7-2 abuts against the lower inner surface of the first bag holder 30-7-1. That is, the lower end of the second bag holder 30-7-2 extends a shorter distance vertically than the lower end of the first bag holder 30-7-1. Thus, after closure, the second bag holder 30-7-2 can press tightly against the inner surface of the first bag holder 30-7-1.

[0072] The first linkage assembly includes a first rocker arm 30-4 fixed to one end of the output shaft of the power assembly. The first rocker arm 30-4 is rotatably connected to one end of the first connecting rod 30-5. The other end of the first connecting rod 30-5 is hinged to the first bag clamping bucket drive plate 30-13. The first bag clamping bucket drive plate 30-13 is fixed to the outer surface of the first bag clamping bucket 30-7-1. One end of the first rotating shaft 30-14 is fixed to the first drive rod 30-17. The second rotating shaft 30-15 is fixed to the second drive rod 30-18 at one end corresponding to the first drive rod 30-17. One end of the first synchronizing rod 30-10 is hinged to the first drive rod 30-17, and the other end of the first synchronizing rod 30-10 is hinged to the second drive rod 30-18.

[0073] The second linkage assembly includes a second rocker arm 30-12 fixed to the other end of the output shaft of the power assembly. The second rocker arm 30-12 is rotatably connected to one end of the second connecting rod 30-9. The other end of the first rotating shaft 30-14 is fixed with a third drive rod 30-19. The second rotating shaft 30-14 is fixed with a second bag clamping bucket drive rod 30-11 at one end corresponding to the third drive rod 30-19. One end of the second bag clamping bucket drive rod 30-11 is connected to the third drive rod 30-19 through a second synchronizing rod 30-16. The other end of the second bag clamping bucket drive rod 30-11 is rotatably connected to the other end of the second connecting rod 30-9.

[0074] The power assembly includes a reducer 30-2, which is fixed to the side of the bag clamping hopper 30-1 via a reducer mounting base. A second servo motor 30-3 is installed at the input end of the reducer 30-2, and the second servo motor 30-3 drives the reducer 30-2. The rubber block assembly 30-8 includes a limiting frame 30-8-1 and a rubber block 30-8-2. The rubber block 30-8-2 is fitted into the limiting frame 30-8-1 and is bolted to the bag clamping base 30-6.

[0075] The first drive rod 30-17, the second drive rod 30-18, the third drive rod 30-19, and the first bag clamp drive rod 30-11 are respectively locked and fixed to their respective rotating shafts by their respective clamping structures. It can be understood that the inner wall of the clamping structure has cavities with arc and flat surfaces to lock with the corresponding parts on their respective rotating shafts.

[0076] When in operation, the bag clamping hopper structure 30 is installed below the discharge port of the weighing and packaging scale. When the material is discharged from the weighing chamber, the second servo motor 30-3 drives the first bag clamping hopper 30-7-1 and the second bag clamping hopper 30-7-2 to open and close via the reducer 30-2 and the first linkage component and the second linkage component. The first bag clamping hopper 30-7-1 and the second bag clamping hopper 30-7-2 can open and close synchronously.

Claims

1. A high-speed automatic electric quantitative packaging machine, characterized in that, include: The metering chamber structure (10) is used to measure the weight of particulate materials and to lower the nominal weight of particulate materials. The inner cavity of the metering hopper (10-3) of the metering chamber structure (10) is fixedly provided with a buffer cone (10-12). The buffer cone (10-12) is supported and fixed in the middle part of the metering hopper (10-3) by connecting ribs. The feeding chamber structure (20) is installed at the feed end of the metering chamber structure (10) to feed material into the metering chamber structure (10). The feeding hopper (20-2) of the feeding chamber structure (20) is controlled by the feeding hopper valve drive assembly to achieve on / off adjustment. The granular material discharged from the feeding chamber structure (20) is buffered by the buffer cone (10-12) and falls into the metering hopper (10-3). The feeding hopper valve drive assembly includes a drive motor (20-8) and a driven gear (20-7) composed of sector gears. The inner side of the driven gear (20-7) is provided with a spring. One end of the spring is connected to the driven gear (20-7) and the other end is connected to the feeding hopper mounting base (20-1) to realize the automatic closing of the feeding hopper valve (20-3) when the power is off. A bag-clamping hopper structure (30) is installed at the discharge end of the metering chamber structure (10) to open the bag and receive the granular material released from the metering chamber structure (10). The bag-clamping base (30-6) of the bag-clamping hopper structure (30) is provided with an adjustable rubber block assembly (30-8) to accommodate bags of various specifications and models. The rubber block assembly (30-8) includes a limiting frame (30-8-1) and a rubber block (30-8-2). The rubber block (30-8-2) is fitted in the limiting frame (30-8-1) and is connected to the bag-clamping base (30-6) by bolts. Three sets of weighing sensors (10-2) are installed on the top surface of the metering housing (10-1) of the metering chamber structure (10). The metering chamber structure (10) includes a metering shell (10-1) comprising a shell frame (10-1-1) and a shell door panel (10-1-2). A shell door panel (10-1-2) is provided on the outer side of the shell frame (10-1-1) corresponding to the two ends of the output shaft (10-5-1) along the axial direction. The shell door panel (10-1-2) is detachably connected to the shell frame (10-1-1). The shell door panel (10-1-2) is detachably connected to the shell frame (10-1-1) via a door lock (10-1-3). The discharge port of the metering hopper (10-3) is constructed as two symmetrical inclined openings. The first valve (10-10-2) and the second valve (10-10-3) are respectively matched with the corresponding inclined openings to control the opening and closing of the corresponding inclined openings. Multiple reinforcing ribs are provided on the back of the first valve (10-10-2) and the second valve (10-10-3). The bag clamping structure (30) includes a bag clamping base (30-6), a bag clamping bucket (30-1) is installed on the top surface of the bag clamping base (30-6), and a bag clamping device (30-7) is installed on the bottom surface of the bag clamping base (30-6). The bag clamping device (30-7) includes a first bag clamping bucket (30-7-1) and a second bag clamping bucket (30-7-2). The first bag clamping bucket (30-7-1) and the second bag clamping bucket (30-7-2) can be opened and closed to cooperate with the rubber block assembly (30-8) provided on the bag clamping base (30-6) to open the bag. A linkage component is provided on the bag clamping base (30-6). The linkage component is connected to the first bag clamping hopper (30-7-1) and the second bag clamping hopper (30-7-2) to drive the first bag clamping hopper (30-7-1) and the second bag clamping hopper (30-7-2) to open and close. A power unit is installed on the bag clamp (30-1), which provides power to the linkage component; The first bag clamping hopper (30-7-1) is rotatably connected to the bag clamping base (30-6) via the first rotating shaft (30-14), and the second bag clamping hopper (30-7-2) is rotatably connected to the bag clamping base (30-6) via the second rotating shaft (30-15); The linkage component includes a first linkage component and / or a second linkage component, with the first linkage component and the second linkage component respectively located on both sides of the power component; The first linkage component includes a first rocker arm (30-4) fixed to one end of the output shaft of the power component. The first rocker arm (30-4) is rotatably connected to one end of the first connecting rod (30-5). The other end of the first connecting rod (30-5) is hinged to the first bag-clamping bucket drive plate (30-13). The first bag-clamping bucket drive plate (30-13) is fixed to the outer surface of the first bag-clamping bucket (30-7-1). One end of the first rotating shaft (30-14) is fixed to the first drive rod (30-17). The second rotating shaft (30-15) is fixed to the second drive rod (30-18) at one end corresponding to the first drive rod (30-17). One end of the first synchronizing rod (30-10) is hinged to the first drive rod (30-17), and the other end of the first synchronizing rod (30-10) is hinged to the second drive rod (30-18). The second linkage component includes a second rocker arm (30-12) fixed to the other end of the output shaft of the power component. The second rocker arm (30-12) is rotatably connected to one end of the second connecting rod (30-9). The other end of the first rotating shaft (30-14) is fixed with a third drive rod (30-19). The second rotating shaft (30-14) is fixed with a second bag clamping bucket drive rod (30-11) at one end corresponding to the third drive rod (30-19). One end of the second bag clamping bucket drive rod (30-11) is connected to the third drive rod (30-19) through a second synchronizing rod (30-16). The other end of the second bag clamping bucket drive rod (30-11) is rotatably connected to the other end of the second connecting rod (30-9).

2. The high-speed automatic electric quantitative packaging machine as described in claim 1, characterized in that: The feeding chamber structure (20) includes a feeding hopper mounting base (20-1), which houses a feeding hopper (20-2). The lower end outlet of the feeding hopper (20-2) is opened and closed by a feeding hopper valve (20-3). The feeding hopper valve (20-3) is rotated and adjusted by a feeding hopper valve drive assembly installed on the feeding hopper mounting base (20-1). The lower end of the feed hopper (20-2) is designed with an arc shape for the discharge port. The feed hopper valve (20-3) matches the discharge port of the feed hopper (20-2). The edge of the feed hopper valve (20-3) is provided with a guide notch (20-3-1).

3. The high-speed automatic electric quantitative packaging machine as described in claim 2, characterized in that: The feed hopper valve drive assembly includes a rotating shaft (20-4), with both ends of the rotating shaft (20-4) rotatably mounted on the side plates of the feed hopper mounting base (20-1), and the rotating shaft (20-4) is located on the outside of the feed hopper (20-2). A driven gear (20-7) is installed at the input end of the rotating shaft (20-4), and the driven gear (20-7) meshes with the driving gear (20-6) mounted on the output shaft of the drive motor (20-8). The drive motor (20-8) is mounted on the feed hopper mounting base (20-1). The driven gear (20-7) is a sector gear. When the driven gear (20-7) rotates to one extreme position, the feed hopper valve (20-3) opens to its maximum degree. When the driven gear (20-7) rotates to another extreme position, the feed hopper valve (20-3) completely closes the outlet of the feed hopper (20-2).

4. The high-speed automatic electric quantitative packaging machine as described in claim 2, characterized in that: The feeding hopper valve (20-3) includes an arc-shaped valve plate (20-3-1). The two sides of the valve plate (20-3-1) are bent vertically in the width direction to form guide connecting plates (20-3-2). The lower part of the feeding hopper (20-2) is fitted between the two guide connecting plates (20-3-2). The upper part of the guide connecting plate (20-3-2) is connected to the valve swing arm (20-5). The valve swing arm (20-5) is fixedly connected to the rotating shaft (20-4). The upper end of the valve swing arm (20-5) is constructed with a clamp structure, which is locked onto the rotating shaft (20-4). The upper part of the inner cavity of the feeding hopper (20-2) is constructed as a flared guide slope.

5. The high-speed automatic electric quantitative packaging machine as described in claim 1, characterized in that: The metering chamber structure (10) includes a metering shell (10-1), a weighing sensor (10-2) is installed on the top surface of the metering shell (10-1), the weighing rod (10-2-1) of the weighing sensor (10-2) passes through the top plate of the metering shell (10-1), and a weighing seat (10-11) is fixed at the lower end of the weighing rod (10-2-1). The weighing seat (10-11) is fixedly connected to the metering hopper (10-3), and a metering valve assembly (10-10) is installed on the metering hopper (10-3) to control the opening and closing of the discharge port at the lower end of the metering hopper (10-3). The metering valve assembly (10-10) includes a metering seat (10-10-1), which is fixed to the outer surface of the metering hopper (10-3). A first valve (10-10-2) and a second valve (10-10-3) are hinged on the metering seat (10-10-1). The metering valve assembly (10-10) is driven by a drive assembly installed on the side of the metering hopper (10-3) to achieve the opening and closing regulation of the first valve (10-10-2) and the second valve (10-10-3).

6. The high-speed automatic electric quantitative packaging machine as described in claim 5, characterized in that: The three sets of load cells (10-2) form an equilateral triangle; The drive assembly includes a reducer (10-5) installed on the side of the measuring hopper (10-3). A first servo motor (10-4) is installed at the input end of the reducer (10-5). The output shaft (10-5-1) of the reducer (10-5) passes through the measuring hopper (10-3). A first rocker arm (10-6) and a second rocker arm (10-8) are respectively installed at the two axial ends of the output shaft (10-5-1). The first rocker arm (10-6) is hinged to one end of the first connecting rod (10-7), and the second rocker arm (10-8) is hinged to one end of the second connecting rod (10-9). The other end of the first connecting rod (10-7) is connected to the first valve (10-10-2), and the other end of the second connecting rod (10-9) is connected to the second valve (10-10-3). The output shaft (10-5-1) has positioning planes at both ends of its axial direction. The first rocker arm (10-6) and the second rocker arm (10-8) are locked to the corresponding positioning planes through their respective clamping structures, so that the first rocker arm (10-6) and the second rocker arm (10-8) rotate synchronously with the output shaft (10-5-1).

7. The high-speed automatic electric quantitative packaging machine as described in claim 1, characterized in that: The power assembly includes a reducer (30-2), which is fixed to the side of the bag clamping hopper (30-1) by a reducer mounting seat. A second servo motor (30-3) is installed at the input end of the reducer (30-2), and the second servo motor (30-3) drives the reducer (30-2). The rubber block assembly (30-8) includes a limiting frame (30-8-1) and a rubber block (30-8-2). The rubber block (30-8-2) is fitted in the limiting frame (30-8-1) and is bolted to the bag clamping base (30-6).

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