Ultrasonic sealing packaging machine

Abstract

The utility model relates to the technical field of packaging equipment, in particular to an ultrasonic sealing packaging machine which comprises a rack, a hopper, a discharging assembly, a weighing assembly, a bag pushing assembly and a sealing assembly, the discharging end of a discharging pipe of the discharging assembly is arranged above the bag pushing assembly, and the feeding end of the discharging pipe of the discharging assembly is connected with the hopper; a vacuum pipe in the discharge pipe is externally connected with a vacuum pump and pumps out excess air in the valve bag; the weighing assembly is installed on the rack and used for weighing filling materials in the valve bag. The bag pushing assembly is connected with the weighing assembly, and the filled valve bag is pushed out by the bag pushing assembly; an overturning assembly is hinged to the bag pushing assembly; and the sealing assembly is arranged above the bag pushing assembly. The vacuum tube is additionally arranged, air mixed with materials is pumped out during filling of the valve bag, the stacking density of the materials in the valve bag and the size of the valve bag are improved, the breakage rate during follow-up storage or transportation is reduced, and losses are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to an ultrasonic sealing packaging machine. Background Art

[0002] Valve bags, commonly known as paste-bottom bags, are widely used in the packaging of materials (cement mortar) in the building materials industry. Valve bags are fed through a top or bottom valve port. Using specialized filling equipment, the filled materials form a rectangular cube, resulting in neat, aesthetically pleasing stacks, making them environmentally friendly. After the valve bag is filled through the filling nozzle, due to the limitations of the packaging bag itself and the characteristics of the material, if the valve bag's filling port is not completely sealed, the fluid material can easily leak from the bag opening, causing unnecessary trouble for transport box storage and potentially causing environmental pollution. In existing technology, ultrasonic sealing is a type of ultrasonic plastic welding machine. This utilizes an ultrasonic concentrator applied to the valve bag's sealing area, generating localized high temperatures that rapidly melt the two plastic contact surfaces at the filling port. Applying a certain amount of pressure fuses the two plastic surfaces together, sealing the valve bag's filling port.

[0003] However, in the existing technology, most valve bags are valve bags with membranes, and most of the filling is done under normal pressure. After the valve bags are filled, the sealing at the filling port is often not tight due to the presence of excess powder. In addition, since a large amount of air is mixed in the material during filling, the stacking density of the material in the bag is low. The excessive air in the bag will cause errors in the weight of the bag. In logistics links such as warehousing and transportation, the valve bags are also easily broken, resulting in the loss of materials and pollution of the environment. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an ultrasonic sealing packaging machine to achieve the technical effects of increasing the stacking density of materials in the bag and reducing the breakage rate of the valve bag.

[0005] In order to achieve this technical purpose, the utility model adopts the following scheme:

[0006] An ultrasonic sealing packaging machine includes a frame and a hopper, a discharge assembly, a weighing assembly, a bag pushing assembly and a sealing assembly installed on the frame. The discharge assembly includes a discharge pipe, the discharge end of the discharge pipe is placed above the bag pushing assembly, and the feed end is connected to the hopper; a vacuum tube is provided inside the discharge pipe, and the vacuum tube is externally connected to a vacuum pump. The vacuum tube extracts excess air inside the valve bag when it is about to be filled; the weighing assembly is installed on the frame, and the weighing assembly is used to quantitatively weigh the filling material inside the valve bag; the bag pushing assembly is connected to the weighing assembly, and the bag pushing assembly is used to push out the filled valve bag to separate the filling port of the valve bag from the discharge pipe; a flip assembly is hinged on the bag pushing assembly, and the flip assembly is used to push down the sealed valve bag; the sealing assembly is placed above the bag pushing assembly, and the sealing assembly seals the filled valve bag.

[0007] Compared with the prior art, the beneficial effects of the present invention are:

[0008] The utility model adds a vacuum tube inside the discharge pipe to extract excess air when the valve bag is filled, thereby improving the bulk density of the material inside the valve bag and the accuracy of the bag weight, reducing the breakage rate during subsequent storage or transportation and reducing losses.

[0009] Furthermore, the preferred embodiment of the present invention is:

[0010] An air bag is arranged on the outer wall of the discharge end of the discharge pipe, the air bag is externally connected to an air pump, and an air suction pipe is arranged in the inner hole of the discharge pipe.

[0011] The bag pushing assembly includes a bag pushing cylinder and a movable bracket, the movable bracket is hinged with a first connecting rod and a second connecting rod, the free ends of the first connecting rod and the second connecting rod are respectively hinged to the weighing assembly; one end of the bag pushing cylinder is hinged to the frame, and the other end is hinged to the first connecting rod.

[0012] The flip assembly includes a mounting base, a bracket and a flip cylinder. One end of the mounting base is connected to the movable bracket and the other end is hinged to the bracket. One end of the flip cylinder is connected to the movable bracket and the other end is hinged to the bracket.

[0013] Clamping cylinders are respectively arranged on both sides of the movable bracket, and clamping plates are respectively arranged on the clamping cylinders. The clamping cylinders drive the clamping plates to clamp the valve bag.

[0014] The discharging assembly also includes a dust suction flap and a dust suction flap cylinder. The upper end of the dust suction flap is provided with an arc-shaped notch. The lower end of the dust suction flap is hinged to the movable bracket through a rotating shaft. One end of the rotating shaft is hinged to one end of the dust suction flap cylinder, and the other end of the dust suction flap cylinder is hinged to the movable bracket.

[0015] The sealing assembly includes a heating platen, a sealing mold, and a sealing cylinder. A hot melt fixing plate is provided on the top of the frame, a fixing rod is provided on the hot melt fixing plate, the free end of the fixing rod is hinged to a hot melt push rod, and the free end of the hot melt push rod is hinged to a mounting frame; one end of the sealing cylinder is hinged to the hot melt fixing plate, and the other end is hinged to the hot melt push rod;

[0016] The sealing mold is hinged to the mounting frame, and the heating pressing plate is mounted on the mounting frame and is placed above the sealing mold.

[0017] One end of the sealing mold is hinged to the bottom of the mounting frame, and the other end is hinged to one end of the sealing mold cylinder, and the other end of the sealing mold cylinder is hinged to the mounting frame; the sealing mold cylinder drives the sealing mold to move and cooperate with the heating pressing plate to seal the valve bag.

[0018] The mounting seat is connected to the movable bracket through a lifting assembly. The lifting assembly includes a lifting seat and a lifting screw. The lifting screw passes through the mounting seat and is threadedly connected to the mounting seat; both ends of the lifting screw are rotatably connected to the movable bracket; guide slide bars are symmetrically arranged on both sides of the lifting screw, and the two guide slide bars pass through the mounting seat and are slidably connected to the mounting seat, and the two ends of the guide slide bars are fixedly connected to the movable bracket respectively; the lifting screw is driven to rotate, and the mounting seat and the overall structure thereon can move up and down along the guide slide bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the structure behind the hidden rack;

[0022] Figure 4 It is a schematic diagram of the structure of the sealing component, weighing component and discharging component;

[0023] Figure 5 It is a structural diagram of the package pushing component and the flipping component;

[0024] Figure 6 It is a structural diagram of the lifting assembly;

[0025] Figure 7 Schematic diagram of the structure of the discharge pipe;

[0026] Figure 8 This is the exploded view of the components of the discharge pipe;

[0027] The following are marked in the figure: 1, frame; 2, hopper; 3, discharge assembly; 301, feed pump; 302, discharge pipe; 3021, air bag; 3022, vacuum tube; 3023, outer tube; 3024, air flow channel; 3025, clamping ring; 3026, charging port; 303, valve; 304, pressure head cylinder; 305, pressure head;

[0028] 4. Bag pushing assembly; 401. Bag pushing cylinder; 402. Movable bracket; 403. First connecting rod; 404. Second connecting rod; 405. Clamping cylinder; 406. Clamping plate; 407. Rotating shaft; 408. Dust suction flap; 409. Connecting piece; 410. Dust suction flap cylinder;

[0029] 5. Flip assembly; 501. Mounting base; 502. Bracket; 503. Flip cylinder; 504. Flip shaft; 505. Baffle;

[0030] 6. Sealing assembly; 601. Heating platen; 602. Sealing mold; 6021. Auxiliary pressure strip; 603. Sealing cylinder; 604. Hot melt fixing plate; 6041. Fixing rod; 6042. Hot melt push rod; 605. Mounting frame; 606. Third connecting rod; 607. Heating element; 608. Sealing mold cylinder;

[0031] 7. Weighing assembly; 701. Sensor; 702. Weighing rod; 703. Support frame; 704. Spring sheet;

[0032] 8. Lifting assembly; 801. Lifting screw; 802. Guide slide; 803. Lifting seat. DETAILED DESCRIPTION

[0033] In order to fully understand the purpose, features and effects of the present invention, the following specific implementation methods are provided. Figures 1 to 8 The present invention is described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

[0034] An ultrasonic sealing packaging machine consists of a frame 1 and a hopper 2, a discharge assembly 3, a weighing assembly 7, a bag pushing assembly 4 and a sealing assembly 6 respectively installed on the frame 1. The discharge assembly 3 and the weighing assembly 7 are both installed on the frame 1, the bag pushing assembly 4 is connected to the weighing assembly 7, the flipping assembly 5 is hinged on the bag pushing assembly 4, and the sealing assembly 6 is installed on the frame 1 and located above the bag pushing assembly 4. After the valve bag is put on the discharge assembly 3 by a robot and filling is completed, the bag pushing assembly 4 is actuated to separate the filling port of the valve bag from the discharge pipe 302, and then the sealing assembly 6 seals the filling port. After sealing is completed, the flipping assembly 5 flips and unloads the bag.

[0035] The hopper 2 is installed above the frame 1, and the discharge assembly 3 consists of a discharge pipe 302, a feeding pump 301, a dust suction flap 408 and a dust suction flap cylinder 410. The feed end of the discharge pipe 302 is connected to the lower end of the hopper 2 through the feeding pump 301, and a valve 303 is provided between the discharge pipe 302 and the feeding pump 301; when the feeding pump 301 is started, the valve 303 is opened, so that the material in the hopper 2 is pumped into the discharge pipe 302.

[0036] The discharge end of the discharge pipe 302 is placed above the bag pushing assembly 4. A vacuum tube 3022 is provided inside the discharge pipe 302. The vacuum tube 3022 is externally connected to a vacuum pump. The vacuum tube 3022 is used to extract excess air in the valve bag when filling.

[0037] In this embodiment, the left end of the discharge pipe 302 is the discharge end, and an air flow channel 3024 is opened on the wall of the discharge pipe 302. The discharge pipe 302 is provided with an outer tube 3023 on the outside of the air flow channel 3024; the right end of the outer tube 3023 is provided with an inflation port 3026, and the inflation port 3026 passes through the outer tube 3023 and is connected to the air flow channel 3024; the left end of the air flow channel 3024 is connected to the air bag 3021 on the wall of the discharge pipe 302. The left end of the discharge pipe 302 is threadedly connected to the clamping ring 3025 of the airbag 3021, and the right end of the outer tube 3023 is also threadedly connected to the discharge pipe 302. The clamping ring 3025 of the airbag 3021 and the outer tube 3023 respectively clamp the airbag 3021, and by twisting the clamping ring 3025 of the airbag 3021 or the outer tube 3023, the clamping degree of the airbag 3021 by the clamping ring 3025 and the outer tube 3023 can be adjusted.

[0038] A pressure head cylinder 304 is also installed on the left side of the frame 1 corresponding to the discharge pipe 302. The pressure head cylinder 304 is connected to the pressure head 305. When the filling port of the valve bag is mounted on the discharge pipe 302, the pressure head cylinder 304 drives the pressure head 305 to press on the discharge pipe 302 to tighten the filling port of the valve bag.

[0039] A support frame 703 is provided at the left end of the frame 1. The support frame 703 is connected to the frame 1 via a weighing assembly 7. The weighing assembly 7 is used to detect the weight of the material inside the valve bag and achieve quantitative packaging of the valve bag. Specifically, the weighing assembly 7 consists of a sensor 701, a weighing rod 702, and a support frame 703. One end of the sensor 701 is mounted on the frame 1, and the other end is connected to one end of the weighing rod 702. The other end of the weighing rod 702 is connected to the top of the support frame 703. The upper and lower corners of the support frame 703 are connected to the frame 1 via spring plates 704. When the spring plates 704 are installed on the frame 1, they are provided with waist-shaped holes. The spring plates 704 are connected to the frame 1 via bolts placed in the waist-shaped holes. The other end of the spring plates 704 is connected to the support frame 703. When weighing the valve bag, apart from the sensor 701, there is no rigid connection between the support frame 703 and the frame 1. When the material is filled into the valve bag through the discharge pipe 302, the weighing rod 702 and the parts installed on the weighing rod 702 are first weighed and zeroed through the sensor 701, and then the valve bag is put on the discharge pipe 302 for filling. The weight of the filling material in the valve bag is detected by the sensor 701. When the filling material in the valve bag reaches the set value, the discharge is stopped.

[0040] The bag pushing assembly 4 is composed of a bag pushing cylinder 401 and a movable bracket 402. Two pairs of connecting rods are hinged on the front and rear sides of the movable bracket 402. One pair of connecting rods is the first connecting rod 403. The two first connecting rods 403 are symmetrically placed on both sides of the movable bracket 402. The upper end of the first connecting rod 403 is hinged to the movable bracket 402, and the lower end of the first connecting rod 403 is hinged to the support frame 703; the other pair of connecting rods is the second connecting rod 404. The two second connecting rods 404 are also symmetrically placed on both sides of the movable bracket 402. The upper end of the second connecting rod 404 is hinged to the movable bracket 402, and the lower end of the second connecting rod 404 is also hinged to the support frame 703.

[0041] In this embodiment, the second connecting rod 404 is a retractable threaded rod. The angle of the movable bracket 402 is adjusted by adjusting the length of the second connecting rod 404. Corresponding adjustments are made according to different valve bag specifications to facilitate obtaining the best sealing position during ultrasonic sealing.

[0042] Clamping cylinders 405 are fixedly mounted on both sides of the movable bracket 402 , and clamping plates 406 are vertically mounted on the driving ends of the clamping cylinders 405 , and the clamping plates 406 are used to clamp the valve bag.

[0043] A rotating shaft 407 is rotatably installed on the top right side of the movable bracket 402, and a dust suction flap 408 is fixedly connected to the rotating shaft 407, and the free end of the dust suction flap 408 is provided with an arc-shaped notch; one end of the rotating shaft 407 is fixedly connected to a connecting piece 409, and the other end of the connecting piece 409 is hinged to the dust suction flap cylinder 410, and the dust suction flap cylinder 410 is fixedly installed on the movable bracket 402. When the filling port of the valve bag is sleeved on the discharge pipe 302, the dust suction flap cylinder 410 drives the rotating shaft 407 to rotate, so that the dust suction flap 408 is in a vertical state, and the dust suction flap 408 is placed at the lower part of the airbag 3021. The airbag 3021 on the discharge pipe 302 is inflated to open the filling port and then presses against the notch of the dust suction flap 408. The dust suction flap 408 performs a secondary seal on the filling port to better prevent the overflow of dust from the valve bag during the filling process.

[0044] Clamping cylinders 405 are respectively provided on both sides of the movable bracket 402, and clamping plates 406 are respectively provided on the clamping cylinders 405. The clamping cylinders 405 drive the clamping plates 406 to clamp the valve bag.

[0045] The left end of the bag pushing assembly 4 is also hinged with a flip assembly 5, which consists of a mounting base 501, a bracket 502 and a flip cylinder 503. The mounting base 501 consists of two parallel vertical plates, and the left ends of the two vertical plates are provided with a flip shaft 504. The two ends of the flip shaft 504 are respectively rotatably connected to their corresponding vertical plates; the flip shaft 504 is fixedly connected to the bracket 502, and baffles 505 are respectively provided on the front, rear and right sides of the bracket 502; the fixed end of the flip cylinder 503 is hinged to the movable bracket 402, and the driving end of the flip cylinder 503 is hinged to the bracket 502. The flip cylinder 503 drives the bracket 502 to rotate around the flip shaft 504, so that the valve bag on the bracket 502 is flipped and unloaded.

[0046] A lifting assembly 8 is provided at the right end of the two fixed plates. The lifting assembly 8 consists of a lifting screw 801, a guide slide 802, and a lifting seat 803. The lifting seat 803 is placed at the right end of the two fixed plates and fixedly connected to the vertical plate. The lifting screw 801 is rotatably mounted on the movable bracket 402 at both ends. The lifting screw 801 passes through the lifting seat 803 and is threadedly connected to the lifting seat 803. Guide slides 802 are symmetrically provided on either side of the lifting screw 801. The two guide slides 802 pass through the lifting seat 803 and are slidably connected to the lifting seat 803. The two ends of the guide slides 802 are fixedly connected to the movable bracket 402. A lifting drive motor is installed at the bottom of the movable bracket 402. The output end of the lifting drive motor is connected to the lifting screw 801. The lifting drive motor drives the lifting screw 801 to rotate, thereby adjusting the position of the bracket 502 according to the size of the valve pocket.

[0047] The sealing assembly 6 consists of a heating platen 601, a sealing mold 602 and a sealing cylinder 603. A hot melt fixing plate 604 is fixedly connected to the top of the frame 1, and a fixing rod 6041 is fixedly connected to the hot melt fixing plate 604. The free end of the fixing rod 6041 is hinged to a hot melt push rod 6042, and the free end of the hot melt push rod 6042 is hinged to a mounting bracket 605; the two sides of the hot melt fixing plate 604 are respectively hinged by a third connecting rod 606. In this embodiment, the third connecting rod 606 is a threaded telescopic rod. By adjusting the length of the third connecting rod 606, the inclination angle of the mounting bracket 605 is adjusted, and then the inclination angle of the heating platen 601 and the sealing mold 602 is adjusted.

[0048] A heating element 607 is fixedly installed on the mounting frame 605, and a heating press plate 601 is installed at the lower end of the heating element 607. The lower end of the mounting frame 605 is hinged to the sealing mold 602, and an auxiliary pressure strip 6021 is provided on the upper surface of the sealing mold 602 corresponding to the lower end of the heating press plate 601. The front and rear sides of the mounting frame 606 are also hinged to the sealing mold cylinder 608 respectively, and the driving ends of the sealing mold cylinder 608 are respectively hinged to the front and rear sides of the sealing mold 602. The sealing mold cylinder 608 drives the sealing mold 602 to move upward to cooperate with the heating press plate 601 to seal the valve bag.

[0049] The working principle of this device is as follows: first, the manipulator puts the valve bag on the discharge pipe 302, then the pressure head cylinder 304 drives the pressure head 305 to press the valve bag, and at the same time the dust suction flap cylinder 410 drives the rotating shaft 407 to rotate, so that the dust suction flap 408 turns to a vertical state and is placed under the air bag 3021, the air bag 3021 on the discharge pipe 302 is inflated to fill the filling port, and the gap of the dust suction flap 408 performs a secondary seal on the filling port; then the feeding pump 301 starts to work When the material is filled into the valve bag, and the filling is nearly completed, the vacuum pump starts to extract the excess air from the bag mouth; when the material is filled into the valve bag through the discharge pipe 302, the weighing rod 702 and the parts installed on the weighing rod 702 are first weighed and zeroed by the sensor 701, and then the valve bag is put on the discharge pipe 302 for filling. The weight of the filling material inside the valve bag is detected by the sensor 701. When the filling material inside the valve bag reaches the set value, the feeding pump 301 stops feeding; the driving end of the bag pushing cylinder 401 extends to drive the movable bracket 402 to swing to the left relative to the support frame 703, and at the same time, the clamping cylinder 405 drives the splint 406 to clamp the front and back sides of the valve bag; the driving end of the sealing cylinder 603 extends to make the mounting frame 605 and the heating pressure head 305 and sealing mold 602 thereon descend, and the driving end of the sealing mold cylinder 608 quickly extends and is placed below the filling port, and then the driving end of the sealing mold cylinder 608 quickly retracts The sealing mold 602 is returned to clamp the filling port and contact the heating platen 601 for ultrasonic sealing. Then the driving end of the sealing mold cylinder 608 is extended again to release the filling port of the valve bag. The driving end of the sealing cylinder 603 is retracted to reset the heating platen 601 and the sealing mold 602. At the same time, the driving end of the flipping cylinder 503 is extended, and the bracket 502 is flipped to remove the sealed valve bag. The driving end of the flipping cylinder 503 is retracted, and the filling of a valve bag is completed.

[0050] The utility model adds a vacuum tube inside the discharge pipe, which can suck out excess air inside the valve bag, thereby increasing the stacking density of the material in the bag, and at the same time reducing the adsorption of the material on the inside of the filling port, thereby improving the sealing effect and sealing quality, and reducing the bag breakage rate during storage or logistics transportation; adding a dust suction flap to the valve bag for secondary sealing, thereby preventing dust from overflowing from the valve bag during filling.

[0051] Finally, it should be noted that the above-listed examples are only preferred embodiments of the present invention. Of course, those skilled in the art can make changes and modifications to the present invention. If these modifications and modifications fall within the scope of the claims of the present invention and their equivalent technologies, they should be considered to be within the scope of protection of the present invention.

Claims

1. An ultrasonic sealing packaging machine, comprising a frame and a hopper, a discharging assembly, a weighing assembly, a package pushing assembly, and a sealing assembly mounted on the frame, characterized in that: The discharge assembly includes a discharge pipe, the discharge end of the discharge pipe is placed above the bag pushing assembly, and the feed end is connected to the hopper; a vacuum tube is provided inside the discharge pipe, and the vacuum tube is externally connected to a vacuum pump, and the vacuum tube extracts excess air inside the valve bag when it is about to be filled; the weighing assembly is installed on the frame, and the weighing assembly is used to quantitatively weigh the filling material inside the valve bag; the bag pushing assembly is connected to the weighing assembly, and the bag pushing assembly is used to push out the filled valve bag to separate the filling port of the valve bag from the discharge pipe; a flip assembly is hinged on the bag pushing assembly, and the flip assembly is used to push down the sealed valve bag; the sealing assembly is placed above the bag pushing assembly, and the sealing assembly seals the filled valve bag.

2. The ultrasonic sealing packaging machine according to claim 1, characterized in that: An air bag is arranged on the outer wall of the discharge end of the discharge pipe, the air bag is externally connected to an air pump, and an air suction pipe is arranged in the inner hole of the discharge pipe.

3. The ultrasonic sealing packaging machine according to claim 1, characterized in that: The bag pushing assembly includes a bag pushing cylinder and a movable bracket, the movable bracket is hinged with a first connecting rod and a second connecting rod, the free ends of the first connecting rod and the second connecting rod are respectively hinged to the weighing assembly; one end of the bag pushing cylinder is hinged to the frame, and the other end is hinged to the first connecting rod.

4. The ultrasonic sealing packaging machine according to claim 3, characterized in that: The flip assembly includes a mounting base, a bracket and a flip cylinder. One end of the mounting base is connected to the movable bracket and the other end is hinged to the bracket. One end of the flip cylinder is connected to the movable bracket and the other end is hinged to the bracket.

5. The ultrasonic sealing packaging machine according to claim 3, characterized in that: Clamping cylinders are respectively arranged on both sides of the movable bracket, and clamping plates are respectively arranged on the clamping cylinders. The clamping cylinders drive the clamping plates to clamp the valve bag.

6. The ultrasonic sealing packaging machine according to claim 1, characterized in that: The discharging assembly also includes a dust suction flap and a dust suction flap cylinder. The upper end of the dust suction flap is provided with an arc-shaped notch. The lower end of the dust suction flap is hinged to the movable bracket through a rotating shaft. One end of the rotating shaft is hinged to one end of the dust suction flap cylinder, and the other end of the dust suction flap cylinder is hinged to the movable bracket.

7. The ultrasonic sealing packaging machine according to claim 1, characterized in that: The sealing assembly includes a heating platen, a sealing mold, and a sealing cylinder. A hot melt fixing plate is provided on the top of the frame, a fixing rod is provided on the hot melt fixing plate, the free end of the fixing rod is hinged to a hot melt push rod, and the free end of the hot melt push rod is hinged to a mounting frame; one end of the sealing cylinder is hinged to the hot melt fixing plate, and the other end is hinged to the hot melt push rod; The sealing mold is hinged to the mounting frame, and the heating pressing plate is mounted on the mounting frame and is placed above the sealing mold.

8. The ultrasonic sealing packaging machine according to claim 7, characterized in that: One end of the sealing mold is hinged to the bottom of the mounting frame, and the other end is hinged to one end of the sealing mold cylinder, and the other end of the sealing mold cylinder is hinged to the mounting frame; the sealing mold cylinder drives the sealing mold to move and cooperate with the heating pressing plate to seal the valve bag.

9. The ultrasonic sealing packaging machine according to claim 4, characterized in that: The mounting seat is connected to the movable bracket through a lifting assembly. The lifting assembly includes a lifting seat and a lifting screw. The lifting screw passes through the mounting seat and is threadedly connected to the mounting seat; both ends of the lifting screw are rotatably connected to the movable bracket; guide slide bars are symmetrically arranged on both sides of the lifting screw, and the two guide slide bars pass through the mounting seat and are slidably connected to the mounting seat, and the two ends of the guide slide bars are fixedly connected to the movable bracket respectively; the lifting screw is driven to rotate, and the mounting seat and the overall structure thereon can move up and down along the guide slide bars.

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