Formula material bag sealing device for small material batching and weighing equipment

Abstract

The utility model relates to the field of ingredient packaging, in particular to a formula ingredient bag sealing device for small ingredient weighing equipment, which comprises a shell, a transmission device and a working cavity arranged on the shell, the transmission device is suitable for conveying an ingredient barrel to enter and exit from the working cavity, and two sides of the working cavity are respectively provided with a bag arranging mechanism. A bag opening mechanism is installed on the top of the working cavity, and the axis of the bag arranging mechanism and the axis of the bag opening mechanism are located on the same plane and are perpendicularly arranged. The telescopic rod assembly drives the arc-shaped bag arranging arm to do telescopic motion so as to be attached to the surface of the batching barrel, and the driving assembly is matched to drive the arc-shaped bag arranging arm to move upwards to arrange packages and enable the packages to be unfolded upwards, so that the packaging bags are prevented from being wrinkled or deviated in the sealing process, and the sealing efficiency is improved. And the opening of the packaging bag is ensured to be at the optimal position during sealing, so that automatic bag turning operation is realized, the working intensity of operators is reduced, and the sealing efficiency of the material bag is improved.

Description

Technical Field

[0001] The utility model relates to the field of ingredient packaging, in particular to a formula material bag sealing device used for small ingredient weighing equipment. Background Art

[0002] The formula material bag sealing device is a sealing device designed specifically for formula material bags. It integrates mechanical, electronic and advanced automatic control technologies to achieve efficient, accurate and reliable material bag sealing. In many industries such as food and chemical, there is an increasing demand for accurate metering and packaging of various forms of materials such as powders, granules and fluids. With the rapid development of automation technology, these industries generally adopt automated production processes, in which automatic bagging devices play an important role.

[0003] Specifically, the automatic bagging device will pre-place empty packaging bags on ingredient containers (such as ingredient barrels), and accurately move these containers filled with packaging bags to the bottom of the designated storage bin through an automated conveying system. Subsequently, according to the preset formula requirements, the system will accurately measure the required materials and inject them into the packaging bags. Once the loading is completed, the operator will flip the bag opening, that is, take the packaging bag filled with materials out of the ingredient container and flip it over. Then, the flipped packaging bag will be transported to the operating area of ​​the sealing device for sealing. After the sealing is completed, the sealed material bag will be further transported to the packaging area for subsequent packaging, labeling and storage operations.

[0004] Regarding the above-mentioned related technologies, the inventors found that in the actual operation process, after the material batching process is completed, the operator is often required to manually turn the bag personally. This link not only slows down the overall efficiency of the material bag sealing, but also increases the operator's workload, thereby affecting the material bag sealing efficiency. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a formula material bag sealing device for small material batching and weighing equipment, which is convenient for automatic bag turning operation, reduces the workload of operators, and improves the sealing efficiency of material bags.

[0006] To solve the above technical problems, the present invention adopts a technical solution: providing a formula material bag sealing device for small ingredient batching weighing equipment, comprising: a housing, a transmission device, and a working chamber provided on the housing, the transmission device being adapted to transport a batching barrel into and out of the working chamber, a bag sorting mechanism being installed on both sides of the working chamber, a bag supporting mechanism being installed on the top of the working chamber, and a sealing mechanism, wherein the axes of the bag sorting mechanism and the bag supporting mechanism are respectively arranged in the same plane and perpendicularly;

[0007] The bag sorting mechanism includes a U-shaped plate, an arc-shaped bag sorting arm with an L-shaped cross-section, and a telescopic rod assembly that drives the arc-shaped bag sorting arm to telescope. The telescopic rod assembly is installed on the U-shaped plate and also includes a driving assembly that drives the U-shaped plate to move up and down. A number of universal balls are arranged at intervals on the inner side of the arc-shaped bag sorting arm, and the inner top end of the arc-shaped bag sorting arm is connected to an arc-shaped elastic pad.

[0008] By adopting the above technical solution, the transmission device transports the batching barrel filled with materials from the batching area to the working chamber, and drives the arc-shaped bag sorting arm to perform telescopic movement through the telescopic rod assembly to fit the surface of the batching barrel. At the same time, in conjunction with the driving assembly, the arc-shaped bag sorting arm is driven to move upward to organize the packaging and expand it upward, thereby avoiding wrinkles or deviations in the packaging bag during the sealing process, and ensuring that the opening of the packaging bag is in the optimal position when sealing. Then, the bag opening is expanded by the bag-stretching mechanism before sealing, ensuring that the sealing mechanism can accurately seal the bag opening.

[0009] In a preferred example, the present invention can be further configured as follows: the bag-supporting mechanism includes a double-rod cylinder and an electric push rod that drives it to move up and down, the electric push rod is installed in the shell, the double-rod cylinder is located in the working chamber and its protruding ends are respectively connected to arc plates, and the opposite sides of the arc plates are respectively connected to anti-slip sheets.

[0010] By adopting the above technical solution, the double-rod cylinder, through the curved plate connected to its extended end, stretches the bag opening, ensuring that the sealing mechanism can accurately seal the bag opening. Simultaneously, the electric push rod controls the up and down movement of the double-rod cylinder, ensuring that the bag-stretching mechanism can be accurately positioned at the bag opening. This, in conjunction with the curved plate, protects the bag from damage during the stretching process and provides sufficient stretching force. Furthermore, the anti-slip sheet increases friction between the curved plate and the bag, preventing the bag from slipping during the stretching process. This ensures that the curved plate firmly grips the bag during the stretching process, preventing it from slipping or shifting. This improves the stability and reliability of the bag-stretching mechanism and ensures a successful sealing operation.

[0011] In a preferred example, the present invention can be further configured as follows: a movable groove is symmetrically provided on the top of the working chamber, and the sealing mechanism includes a symmetrically arranged U-shaped frame, the two ends of the U-shaped frame are respectively located in the movable groove, the open ends of the U-shaped frame are respectively installed with connecting plates, the closed ends of the U-shaped frame are respectively located in the shell, the opposite sides of the connecting plates are respectively connected with heat sealing knives, two electric push rods are symmetrically installed in the shell, and the two electric push rods are suitable for driving the U-shaped frame to move toward or oppositely, and the inner sides of the U-shaped frame are respectively installed with stabilizing plates located in the working chamber, and also include no less than an even number of cross bars, the two ends of the cross bars are respectively connected to the shell, the cross bars are respectively symmetrically arranged and pass through the stabilizing plates and are slidably connected to them, and the cross bars do not contact the bag-holding mechanism.

[0012] By adopting the above technical solution, the U-shaped frame accurately positions the heat sealing knife at the bag opening of the packaging bag through the connecting plate connected to its open end. At the same time, its closed end is located in the shell and is connected to the electric push rod 2 to realize the driving of the sealing mechanism. The bag opening of the packaging bag is firmly sealed by heating and pressing the heat sealing knife to ensure that the material will not leak during transportation and storage. At the same time, the cross bar provides additional support and guidance for the stabilizing plate to ensure that it can remain stable during the sealing process. The cross bar does not contact the bag-supporting mechanism, avoiding mutual interference, improving the stability and reliability of the sealing mechanism, and ensuring the independence and coordination between the bag-supporting mechanism and the sealing mechanism.

[0013] In a preferred example, the present invention can be further configured as follows: the telescopic rod assembly includes an electric push rod three installed in a U-shaped plate, the protruding end of the electric push rod three is connected to the arc-shaped bag sorting arm, and a guide sleeve is symmetrically installed on one side of the U-shaped plate close to the arc-shaped bag sorting arm, and guide rods are respectively connected to the guide sleeves, and a connecting seat is symmetrically provided on the arc-shaped bag sorting arm, one end of the guide rod is connected to the connecting seat, and the other end is connected to the inner wall of the U-shaped plate.

[0014] By adopting the above technical solution, the electric push rod drives the three-way arc-shaped bag sorting arm to perform telescopic movement, and at the same time drives the guide rod to telescopically slide in the guide sleeve, providing additional guidance and support for the U-shaped plate and the arc-shaped bag sorting arm to avoid shaking or deviation.

[0015] In a preferred example, the present invention can be further configured as follows: the driving assembly includes upper and lower symmetrically arranged fixing plates, a transmission screw is connected between the fixing plates, a driving motor is installed at the bottom of the fixing plate, the bottom end of the transmission screw passes through the fixing plate and is connected to the output end of the driving motor, the top end of the transmission screw is connected to the fixing plate through a nut seat, a driving block is threadedly connected to the transmission screw, and the driving block is connected to the U-shaped plate, and guide rails connected to the shell are respectively provided on both sides between the fixing plates, and sliders are respectively slidably connected to the guide rails, and the sliders are respectively connected to the U-shaped plates.

[0016] By adopting the above technical solution, the driving motor drives the transmission screw to rotate, driving the driving block to move, thereby driving the plate to move. Under the action of the guide rail and the slider, the stability and accuracy of the U-shaped plate during the extension and retraction process are ensured, while preventing the U-shaped plate from being damaged due to excessive movement.

[0017] In a preferred example, the present invention can be further configured as follows: the transmission device includes a frame, the two ends of the frame are respectively located on both sides of the shell, the top two sides of the frame are respectively connected with U-shaped mounting plates, a number of electric rollers are installed between the U-shaped mounting plates, the top of the U-shaped mounting plates are connected with a number of mounting seats at intervals, sliding rods are respectively passed through the mounting seats, and limiting baffles are respectively connected between two adjacent sliding rods, and the two symmetrical limiting baffles are respectively arranged facing each other, the top of the mounting seat is threadedly connected to a threaded handle, and the bottom of the threaded handle is in contact with the sliding rod.

[0018] By adopting the above technical solution, the electric roller drives the barrel to be transported gradually, and under the action of the limit baffle, the lateral movement of the barrel during the transmission process is limited to prevent it from deviating from the transmission channel. In addition, the position of the sliding rod can be adjusted by rotating the threaded handle, so that the user can quickly and accurately adjust the position of the limit baffle according to needs to meet different transmission requirements.

[0019] In summary, the present invention includes at least one of the following beneficial technical effects of the formula material package sealing device for small ingredient weighing equipment:

[0020] 1. The telescopic rod assembly drives the arc-shaped bag sorting arm to telescope to fit the surface of the batching barrel, and cooperates with the driving assembly to drive the arc-shaped bag sorting arm upward to sort the packages and spread them upward to avoid wrinkles or deviations in the packaging bags during the sealing process and ensure that the opening of the packaging bags is in the best position when sealing. The bag opening is then spread by the bag-supporting mechanism before sealing, thereby realizing automatic bag turning operation, reducing the operator's workload and improving the sealing efficiency of the material bags.

[0021] 2. The double-rod cylinder drives the curved plate to expand the bag opening, ensuring that the sealing mechanism can accurately seal the bag opening. At the same time, the electric push rod controls the up and down movement of the double-rod cylinder to ensure that the bag expansion mechanism can be accurately positioned at the bag opening of the bag, and cooperates with the curved plate to ensure that the bag will not be damaged during the expansion process, thereby improving the sealing efficiency of the package. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a structural diagram of the bag sorting mechanism of the utility model;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure of the middle drive component;

[0026] Figure 4 This is a schematic structural diagram of the bag-supporting mechanism of the utility model;

[0027] Figure 5 This is a structural diagram of the sealing mechanism of the utility model;

[0028] Figure 6 for Figure 1 Right view of;

[0029] Figure 7 It is a structural schematic diagram of the transmission device of the present utility model.

[0030] In the figure: 1, housing; 20, transmission device; 3, working chamber; 40, bag sorting mechanism; 50, bag supporting mechanism; 60, sealing mechanism; 7, movable slot;

[0031] 21. Frame; 22. U-shaped mounting plate; 23. Motorized roller; 24. Sliding rod; 25. Limit stopper; 26. Threaded handle; 27. Mounting base;

[0032] 41. U-shaped plate; 42. Arc-shaped bag sorting arm; 43. Telescopic rod assembly; 44. Drive assembly; 45. Universal ball; 46. Arc-shaped elastic pad;

[0033] 51. Double-rod cylinder; 52. Electric push rod 1; 53. Curved plate; 54. Anti-slip sheet;

[0034] 61. U-shaped frame; 62. Connecting plate; 63. Heat sealing knife; 64. Electric push rod 2; 65. Stabilizing plate; 66. Crossbar;

[0035] 431. Electric push rod 3; 432. Guide rod; 433. Connecting seat; 434. Guide sleeve;

[0036] 441. Fixed plate; 442. Transmission screw; 443. Drive motor; 444. Drive block; 445. Guide rail; 446. Slider. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0038] It should be noted that these drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0039] Reference Figure 1-7, which is a formula material bag sealing device for small ingredient weighing equipment disclosed in the present invention, including: a shell 1, a transmission device 20 and a working chamber 3 opened on the shell 1, the transmission device 20 is suitable for conveying the ingredient barrel into and out of the working chamber 3, the two sides of the working chamber 3 are respectively installed with a bag sorting mechanism 40, the top of the working chamber 3 is installed with a bag support mechanism 50, and also includes a sealing mechanism 60, the axis of the bag sorting mechanism 40 and the axis of the bag support mechanism 50 are respectively in the same plane and are arranged vertically, the bag sorting mechanism 40 includes a U-shaped plate 41, an arc-shaped bag sorting arm 42 with an L-shaped cross section and a driving arc bag sorting mechanism. The telescopic rod assembly 43 for the telescopic movement of the arm 42 is installed on the U-shaped plate 41. The telescopic rod assembly 43 includes an electric push rod 3 431 installed in the U-shaped plate 41. The protruding end of the electric push rod 3 431 is connected to the arc-shaped bag sorting arm 42. A guide sleeve 434 is symmetrically installed on one side of the U-shaped plate 41 close to the arc-shaped bag sorting arm 42. The guide sleeves 434 are respectively connected to guide rods 432. A connecting seat 433 is symmetrically provided on the arc-shaped bag sorting arm 42. One end of the guide rod 432 is connected to the connecting seat 433, and the other end is connected to the inner wall of the U-shaped plate 41. It also includes a mechanism for driving the U-shaped plate 41 up and down. The driving assembly 44 of the movement, a plurality of universal balls 45 are arranged at intervals on the inner side of the arc-shaped bag-sorting arm 42, and an arc-shaped elastic pad 46 is connected to the inner top end of the arc-shaped bag-sorting arm 42; the curvature of the arc-shaped bag-sorting arm 42 is adapted to the curvature of the outer circle of the ingredient barrel, and the corresponding ends of the two arc-shaped bag-sorting arms 42 are respectively arranged close to each other after the electric push rod 3 431 is extended, so that the arc length of the arc-shaped bag-sorting arm 42 can fit the ingredient barrel more closely, and the packaging bags folded on its surface can be sorted and turned over, and the arc-shaped elastic pad 46 is preferably made of rubber or sponge. When the electric push rod 3 431 drives the arc-shaped bag-sorting arm 42 to telescopically move, It prevents wear on the barrel wall and realizes precise positioning of the ingredient barrel. Under the action of the driving component 44, the arc-shaped bag sorting arm 42 is driven to move upward continuously. At this time, the universal ball 45 and the arc-shaped elastic pad 46 increase the contact area and friction between the arc-shaped bag sorting arm 42 and the packaging bags, preventing the packaging bags from slipping or being damaged. In the process of the arc-shaped bag sorting arm 42 gradually moving upward, the packaging bags in the ingredient barrel are sorted and turned over, and the bag-stretching mechanism 50 is cooperated to stretch the bag opening before sealing, ensuring that the sealing mechanism 60 can accurately seal the bag opening, thereby improving the sorting efficiency and accuracy of the packaging bags.

[0040] The bag-holding mechanism 50 includes a double-rod cylinder 51 and an electric push rod 52 that drives it to move up and down. The electric push rod 52 is installed in the shell 1. The double-rod cylinder 51 is located in the working chamber 3 and its protruding ends are respectively connected to arc plates 53, and the opposite sides of the arc plates 53 are respectively connected to anti-slip sheets 54; through the extension and contraction of the double-rod cylinder 51, the arc plates 53 are driven to move to open and position the packaging bag. When the arc plates 53 are extended into the bag opening up and down, they can fit tightly against the inner wall of the packaging bag to ensure that the packaging bag will not be damaged during the bag-holding process and provide sufficient opening force. The anti-slip sheet 54 can also increase the friction between the arc plates 53 and the packaging bag to prevent the packaging bag from slipping during the bag-holding process, and after the electric push rod 52 drives the double-rod cylinder 51 to extend and move upward, the bag opening is placed in a vertical state to prevent wrinkles from being generated during sealing, affecting the sealing effect.

[0041] A movable groove 7 is symmetrically provided on the top of the working chamber 3. The sealing mechanism 60 includes a symmetrically arranged U-shaped frame 61. The two ends of the U-shaped frame 61 are respectively located in the movable groove 7. The open ends of the U-shaped frame 61 are respectively installed with connecting plates 62. The closed ends of the U-shaped frame 61 are respectively located in the shell 1. The opposite sides of the connecting plates 62 are respectively connected with heat sealing knives 63. Electric push rods 64 are symmetrically installed in the shell 1. The electric push rods 64 are suitable for driving the U-shaped frame 61 to move toward or in the opposite direction. The inner sides of the U-shaped frame 61 are respectively installed with stabilizing plates 65 located in the working chamber 3, and also include no less than an even number of cross bars 66. The two ends of the cross bars 66 are respectively connected to the shell 1. The cross bars 66 are respectively symmetrically arranged and pass through the stabilizing plates 65 and are slidably connected thereto. The cross bars 66 are not connected to the bag-supporting mechanism 50 contact; the U-shaped frame 61 accurately positions the heat sealing knife 63 at the bag opening of the packaging bag through the connecting plate 62 connected to its open end. At the same time, its closed end is located in the shell 1 and is connected to the electric push rod 2 64 to realize the driving of the sealing mechanism 60, and contacts the sealing part of the packaging bag through heating and pressing by the heat sealing knife 63 to achieve the sealing treatment of the packaging bag, ensuring that the material will not leak during transportation and storage. At the same time, the cross bar 66 provides additional support and guidance for the stabilizing plate 65 to ensure that it can remain stable during the sealing process, and the cross bar 66 does not contact the bag-stretching mechanism 50, avoiding mutual interference, improving the stability and reliability of the sealing mechanism 60, and ensuring the independence and coordination between the bag-stretching mechanism 50 and the sealing mechanism 60.

[0042] The drive assembly 44 includes a fixed plate 441 symmetrically arranged in the upper and lower parts, and a transmission screw 442 is connected between the fixed plates 441. A driving motor 443 is installed at the bottom of the bottom fixed plate 441. The bottom end of the transmission screw 442 passes through the fixed plate 441 and is connected to the output end of the driving motor 443. The top of the transmission screw 442 is connected to the fixed plate 441 through a nut seat. A driving block 444 is threadedly connected to the transmission screw 442, and the driving block 444 is connected to the U-shaped plate 41. Guide rails 445 connected to the shell 1 are respectively provided on both sides between the fixed plates 441, and sliders 446 are respectively slidably connected to the guide rails 445, and the sliders 446 are respectively connected to the U-shaped plate 41; the driving motor 443 drives the transmission screw 442 to drive the driving block 444 to move, so that it synchronously drives the U-shaped plate 41 to move, thereby making the telescopic rod assembly 43 and the arc-shaped bag sorting arm 42 move up and down to realize the bag sorting operation of the packaging bags.

[0043] The transmission device 20 includes a frame 21, the two ends of the frame 21 are respectively located on both sides of the shell 1, and the top two sides of the frame 21 are respectively connected with U-shaped mounting plates 22, and a number of electric rollers 23 are installed between the U-shaped mounting plates 22. The top of the U-shaped mounting plate 22 is connected with a number of mounting seats 27 at intervals, and sliding rods 24 are respectively passed through the mounting seats 27. A limit baffle 25 is respectively connected between two adjacent sliding rods 24, and the two symmetrical limit baffles 25 are respectively arranged facing each other. The top of the mounting seat 27 is threadedly connected with a threaded handle 26, and the bottom of the threaded handle 26 is in contact with the sliding rod 24; the electric roller 23 transports the ingredient barrels on the production line, moves them accurately to the working chamber 3 and is located at the position corresponding to the bag sorting mechanism 40, and during the movement, the limit baffle 25 limits the lateral movement of the barrel during the transmission process to prevent it from deviating from the transmission channel. In addition, the position of the sliding rod 24 can be adjusted by rotating the threaded handle 26.

[0044] The implementation principle of this embodiment is as follows: when in use, the batching barrel on the production line is transported to the working chamber 3 by the electric roller 23, and when it moves to the position corresponding to the arc-shaped bag sorting arm 42, the electric push rod 3 431 extends, so that the arc-shaped elastic pad 46 on the arc-shaped bag sorting arm 42 contacts the outer wall of the batching barrel, and the driving component 44 drives the arc-shaped elastic pad 46 to move upward. At this time, the universal ball 45 rolls in contact with the barrel wall, cooperates with the guide sleeve 434 and the guide rod 432, and improves the movement stability of the arc-shaped bag sorting arm 42, so that the bag opening of the packaging bag is upwardly arranged for bag turning, and when the bag opening is upwardly expanded, the electric push rod 1 52 drives the double-rod cylinder 51 to move downward, so that the arc plate 53 is positioned inside the bag opening, and then The rear double-rod cylinder 51 drives the arc plate 53 to move to open the packaging bag. Its top is in a straight line shape, and the bag opening is kept in a vertical state during the gradual rise of the electric push rod 1 52. At the same time, the friction between the arc plate 53 and the packaging bag is increased under the action of the anti-slip sheet 54 to prevent the packaging bag from slipping during the bag-holding process. Then the corresponding electric push rod 2 64 drives the U-shaped frame 61, the connecting plate 62 and the heat-sealing knife 63 to move toward the bag opening. The straight bag opening and the heat-sealing knife 63 are parallel to each other, and the double-rod cylinder 51 is located above the heat-sealing knife 63. The heat-sealing knife 63 contacts the sealing part of the packaging bag through heating and pressing, thereby realizing the sealing process of the packaging bag and completing the packaging sealing operation.

[0045] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A formula material package sealing device for small ingredient weighing equipment, comprising: A shell (1), a transmission device (20) and a working chamber (3) opened on the shell (1), wherein the transmission device (20) is suitable for conveying a batching barrel into and out of the working chamber (3), and is characterized in that bag sorting mechanisms (40) are respectively installed on both sides of the working chamber (3), a bag holding mechanism (50) is installed on the top of the working chamber (3), and a sealing mechanism (60) is also included, and the axis of the bag sorting mechanism (40) and the axis of the bag holding mechanism (50) are respectively in the same plane and are arranged vertically; The bag sorting mechanism (40) comprises a U-shaped plate (41), an arc-shaped bag sorting arm (42) with an L-shaped cross section, and a telescopic rod assembly (43) for driving the arc-shaped bag sorting arm (42) to move telescopically. The telescopic rod assembly (43) is mounted on the U-shaped plate (41) and further comprises a driving assembly (44) for driving the U-shaped plate (41) to move up and down. A plurality of universal balls (45) are provided at intervals on the inner side of the arc-shaped bag sorting arm (42), and an arc-shaped elastic pad (46) is connected to the inner top end of the arc-shaped bag sorting arm (42).

2. The formula material package sealing device for small ingredient weighing equipment according to claim 1, characterized in that: The bag-supporting mechanism (50) comprises a double-rod cylinder (51) and an electric push rod (52) for driving the double-rod cylinder to move up and down. The electric push rod (52) is installed in the housing (1). The double-rod cylinder (51) is located in the working chamber (3) and its protruding ends are respectively connected to arc plates (53). The opposite sides of the arc plates (53) are respectively connected to anti-slip sheets (54).

3. The formula material package sealing device for small ingredient weighing equipment according to claim 1, characterized in that: The top of the working chamber (3) is symmetrically provided with a movable groove (7), and the sealing mechanism (60) includes a symmetrically arranged U-shaped frame (61), the two ends of the U-shaped frame (61) are respectively located in the movable groove (7), the open ends of the U-shaped frame (61) are respectively installed with connecting plates (62), the closed ends of the U-shaped frame (61) are respectively located in the shell (1), the opposite sides of the connecting plates (62) are respectively connected with heat sealing knives (63), and the shell (1) is symmetrically provided with electric sealing knives (63). Push rod 2 (64), the electric push rod 2 (64) is suitable for driving the U-shaped frame (61) to move toward or in opposite directions, the inner side of the U-shaped frame (61) is respectively installed with a stabilizing plate (65) located in the working chamber (3), and also includes no less than an even number of cross bars (66), the two ends of the cross bars (66) are respectively connected to the shell (1), the cross bars (66) are respectively symmetrically arranged and pass through the stabilizing plate (65) and are slidably connected thereto, and the cross bars (66) do not contact the bag-supporting mechanism (50).

4. The formula material package sealing device for small ingredient weighing equipment according to claim 1, characterized in that: The telescopic rod assembly (43) includes an electric push rod (431) installed in the U-shaped plate (41), the protruding end of the electric push rod (431) is connected to the arc-shaped bag sorting arm (42), a guide sleeve (434) is symmetrically installed on one side of the U-shaped plate (41) close to the arc-shaped bag sorting arm (42), and a guide rod (432) is respectively connected in the guide sleeve (434), and a connecting seat (433) is symmetrically provided on the arc-shaped bag sorting arm (42), one end of the guide rod (432) is connected to the connecting seat (433), and the other end is connected to the inner wall of the U-shaped plate (41).

5. The formula material package sealing device for small ingredient weighing equipment according to claim 1, characterized in that: The driving assembly (44) comprises a fixed plate (441) symmetrically arranged above and below, a transmission screw (442) is connected between the fixed plates (441), a driving motor (443) is installed at the bottom of the fixed plate (441), the bottom end of the transmission screw (442) passes through the fixed plate (441) and is connected to the output end of the driving motor (443), the top end of the transmission screw (442) is connected to the fixed plate (441) through a nut seat, a driving block (444) is threadedly connected to the transmission screw (442), and the driving block (444) is connected to the U-shaped plate (41), and guide rails (445) connected to the housing (1) are respectively provided on both sides between the fixed plates (441), and sliders (446) are respectively slidably connected to the guide rails (445), and the sliders (446) are respectively connected to the U-shaped plate (41).

6. The formula material package sealing device for small ingredient weighing equipment according to claim 1, characterized in that: The transmission device (20) comprises a frame (21), the two ends of the frame (21) are respectively located on both sides of the shell (1), the top two sides of the frame (21) are respectively connected with U-shaped mounting plates (22), a plurality of electric rollers (23) are installed between the U-shaped mounting plates (22), the top of the U-shaped mounting plates (22) are spaced apart and connected with a plurality of mounting seats (27), a sliding rod (24) is respectively passed through the mounting seats (27), a limiting baffle (25) is respectively connected between two adjacent sliding rods (24), and two symmetrical limiting baffles (25) are respectively arranged facing each other, the top of the mounting seat (27) is threadedly connected with a threaded handle (26), and the bottom of the threaded handle (26) is in contact with the sliding rod (24).

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