Accurate metering packaging machine suitable for liquid with viscosity

Abstract

The invention discloses a precise metering packaging machine suitable for liquid with viscosity, and relates to the technical field of liquid packaging. Comprising a shell, a liquid outlet pipe is installed on the shell, the shell is in sliding connection with a first electromagnetic sliding block, the first electromagnetic sliding block is fixedly connected with a supporting frame, and the supporting frame is in sliding connection with a clamping block; and the electric push rod is arranged on the shell, a sliding block is arranged at the telescopic end of the electric push rod, and the sliding block is slidably connected with an extrusion frame. According to the packaging bag base material heat sealing device, the clamping blocks drive the packaging bag base material to move, liquid adhered to the liquid outlet pipe is scraped into the packaging bag base material through the extrusion frame, the adhesion amount of viscous liquid on the liquid outlet pipe is reduced, and therefore the amount of the viscous liquid in the packaging bag base material is more accurate; the position, making contact with liquid, on the packaging bag base material is moved to the position away from the heat sealing position, so that the sealing performance of heat sealing of the packaging bag base material is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid packaging, in particular to a precise metering and packaging machine suitable for liquids with high viscosity. Background Art

[0002] A liquid packaging machine is a device used to package various liquids. Its main function is to inject the liquid into the rolled packaging bag substrate in sections through an injection tube, and cut the packaging film substrate into multiple sections during the injection process to realize the subpackaging of the liquid. In the process of injecting viscous liquid into the packaging bag base material, in order to reduce the adhesion area of ​​the viscous liquid on the injection tube, the injection tube is usually not immersed in the viscous liquid. However, when the existing packaging machine packages viscous liquid, the viscous liquid will adhere to the injection tube mouth each time it is injected, and the adhesion amount of the liquid on the tube mouth fluctuates. Once the liquid adheres to the injection tube mouth or naturally drips into the packaging bag substrate, it will affect the amount of liquid in the packaging bag, thereby affecting the accuracy of the liquid amount in the packaging bag. In addition, since the time for the viscous liquid to drip naturally is uncertain, if the packaging bag is directly heat-sealed, the liquid will easily remain at the heat-sealed part of the packaging bag, thereby affecting the sealing of the packaging bag substrate after heat-sealing. Summary of the Invention

[0003] In order to overcome the shortcomings mentioned in the above background, the present invention provides a precise metering and packaging machine suitable for liquids with viscosity.

[0004] The technical solution of the present invention is: a precise metering and packaging machine for liquids with a certain viscosity, comprising: A housing, wherein the housing is provided with a liquid outlet pipe, the housing is provided with symmetrically distributed first electromagnetic slide rails, a first electromagnetic slider is slidably connected within the first electromagnetic slide rails of the housing, the first electromagnetic slider is fixedly connected to a support frame, the support frame is slidably connected to two groups of clamping blocks distributed up and down, the clamping blocks in the same group are symmetrically distributed, and a first elastic member is fixedly connected between the clamping blocks and adjacent support frames; Limiting frames, the number of which is the same as the number of the clamping blocks, and all of which are fixed to the housing, the limiting frames are used to guide the adjacent symmetrically distributed clamping blocks to adjust the distance between the adjacent symmetrically distributed clamping blocks; There are two electric push rods symmetrically distributed and both are arranged on the shell. The telescopic ends of the electric push rods are provided with sliding blocks. The opposite sides of the two sliding blocks are slidably connected to the extrusion frames. A second elastic member is fixed between the sliding block and the adjacent extrusion frame.

[0005] In addition, it is particularly preferred that the invention further comprises: There are two fixing rods, each fixed to a position on the housing close to the adjacent sliding block, and the fixing rod is fixed to a first limiting block; There are two second limit blocks, which are respectively fixed to the adjacent sliding blocks. The first limit block and the second limit block are respectively provided with a first inclined surface and a second inclined surface on opposite sides. The first inclined surface of the first limit block is used to contact the adjacent second inclined surface and guide the adjacent second limit block so that the second limit block moves along the first inclined surface of the adjacent first limit block. There is a distance between the second limit block and the first limit block. The telescopic end of the electric push rod is slidably connected to the sliding block through a straight rod. A reset spring is fixed between the sliding block and the straight rod at the telescopic end of the electric push rod.

[0006] In addition, it is particularly preferred that the fixed part of one of the electric push rods is fixedly connected to a second electromagnetic slider, and a second electromagnetic slide rail is provided on the outer shell near the second electromagnetic slider, and the second electromagnetic slider slides in the second electromagnetic slide rail of the outer shell, and the opposite sides of the two extrusion frames are provided with spaced grooves.

[0007] In addition, it is particularly preferred that the liquid outlet pipe is located between the two extrusion frames, and the groove and the projection of the liquid outlet pipe on the sliding block do not overlap.

[0008] In addition, it is particularly preferred that the invention further comprises: The number of the rotating plates is the same as the number of the extrusion frames, and they are respectively hinged to the adjacent extrusion frames, and the hinge points between the rotating plates and the adjacent extrusion frames are located on the lower side of the extrusion frames, and a third elastic member is fixed between the rotating plates and the adjacent extrusion frames.

[0009] Furthermore, it is particularly preferred that the rotating plate is provided with a first recessed portion.

[0010] In addition, it is particularly preferred that the width of the first recessed portion is greater than the inner diameter of the liquid outlet pipe.

[0011] In addition, it is particularly preferred that the invention further comprises: The number of the third limit blocks is the same as that of the second limit blocks, and they are respectively fixed to the adjacent first limit blocks. The third limit blocks are provided with symmetrically distributed guide slopes. The guide slopes of the third limit blocks are used to contact the adjacent second slopes and guide the adjacent second limit blocks. There is a distance between the third limit block and the second limit block. The third limit block is located between the adjacent second limit block and the adjacent first limit block.

[0012] In addition, it is particularly preferred that the invention further comprises: A fixed ring, fixedly connected to the liquid outlet pipe, wherein the fixed ring is slidably connected to a centrally symmetrically distributed blocking frame, and the blocking frame is used to block the liquid outlet pipe; The trigger rods are the same in number as the blocking frames and are respectively fixed to adjacent extrusion frames. The trigger rods are used to squeeze the adjacent blocking frames.

[0013] In addition, it is particularly preferred that a second recessed portion is provided on a side of the sealing frame close to the liquid outlet pipe.

[0014] In summary, the present application has at least one of the following beneficial technical effects: 1. The present invention uses a clamping block to drive the packaging bag substrate to move, and uses an extrusion frame to scrape liquid adhering to the liquid outlet pipe into the packaging bag substrate, thereby reducing the amount of viscous liquid adhering to the liquid outlet pipe, so as to ensure a more accurate amount of viscous liquid in the packaging bag substrate. When the packaging bag substrate needs to be heat-sealed, the position on the packaging bag substrate that contacts the liquid is moved away from the heat-sealed portion, thereby reducing the probability of liquid penetrating into the heat-sealed portion of the packaging bag substrate, thereby ensuring the sealing performance of the heat-sealed packaging bag substrate. 2. By gradually fitting the plate to the packaging bag substrate, the liquid adhering to the liquid outlet pipe and the packaging bag substrate is guided into the packaging bag substrate, thereby reducing the probability of the liquid spreading to the surroundings due to direct squeezing of the packaging bag substrate, thereby reducing the probability of the liquid flowing upward to the heat seal of the packaging bag substrate, and further reducing the impact of the liquid on the sealing of the packaging bag substrate. The first recessed portion is used to wrap the liquid on the lower side of the liquid outlet pipe to reduce the probability of the liquid being squeezed into the groove, thereby ensuring normal flow in the groove; 3. The liquid outlet pipe is sealed by a sealing frame so that the liquid in the liquid outlet pipe will no longer cause the amount of liquid in the packaging bag substrate to change due to natural dripping, thereby ensuring the accuracy of the liquid amount in the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a sectional view of the three-dimensional structure of the housing of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the support frame of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the sliding block of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the limiting frame of the present invention; Figure 6 Schematic diagram of the three-dimensional structure of the fixing rod of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the rotating plate of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the trigger lever of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the first recessed portion of the present invention.

[0016] The markings in the accompanying drawings are as follows: 1. outer shell, 2. liquid outlet pipe, 3. first electromagnetic slider, 4. support frame, 5. clamping block, 6. limit frame, 7. electric push rod, 8. sliding block, 9. extrusion frame, 10. fixed rod, 11. first limit block, 12. second limit block, 13. second electromagnetic slider, 14. groove, 15. rotating plate, 16. first recessed portion, 17. third limit block, 18. fixing ring, 19. blocking frame, 20. trigger rod, 21. second recessed portion. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Suitable for precise metering and packaging machines of viscous liquids, such as Figures 1-6As shown, it includes: a shell 1, a liquid outlet pipe 2 is installed on the shell 1. During the use of this device, the outer wall of the liquid outlet pipe 2 does not contact the viscous liquid to reduce the amount of viscous liquid adhering to the liquid outlet pipe 2. The shell 1 is provided with a feeding device, a cutting device, an external conveying device for supplying the packaging bag substrate and a control terminal. The feeding device, the cutting device, the external conveying device and the control terminal are all existing structures and are not shown in the figure. The feeding device, the cutting device and the external conveying device are all electrically connected to the control terminal. The feeding device is used to convey the liquid material into the liquid outlet pipe 2. The cutting device is located in the clamping block. 5, the cutting device is used to cut the packaging bag filled with liquid. The shell 1 is provided with a first electromagnetic slide rail which is symmetrically distributed on the left and right and is electrically connected to the control terminal. The first electromagnetic slide rail of the shell 1 is slidably connected to the first electromagnetic slider 3. The first electromagnetic slider 3 is fixed to the support frame 4. The support frame 4 is slidably connected to two groups of clamping blocks 5 distributed up and down. The same group of clamping blocks 5 has two symmetrically distributed front and back. The clamping blocks 5 are used to clamp the packaging bag and drive the packaging bag to move, so as to adjust the distance between adjacent symmetrically distributed clamping blocks 5. The opposite sides of the two adjacent symmetrically distributed clamping blocks 5 are provided with friction surfaces. In order to increase the friction between the clamping block 5 and the packaging bag, a first elastic member is fixedly connected between the clamping block 5 and the adjacent support frame 4, wherein the first elastic member is a tension spring; the limit frame 6, the number of which is the same as the number of groups of the clamping blocks 5, and both are fixedly connected to the shell 1, the limit frame 6 is used to guide the adjacent symmetrically distributed clamping blocks 5, the lower part of the upper limit frame 6 is an eight-shaped, the limit frame 6 located on the upper side and the limit frame 6 located on the lower side are mirror-imaged, when the two adjacent clamping blocks 5 on the upper side move upward along the adjacent limit frame 6, the lower part of the limit frame 6 is limited, so that the two adjacent clamping blocks 5 move toward each other, and the two adjacent clamping blocks on the lower side are When 5 moves downward along the adjacent limiting frame 6, the upper portion of the limiting frame 6 limits the position of the two adjacent clamping blocks 5, causing them to move in opposite directions. The electric push rod 7 has two symmetrically distributed front and rear portions and is disposed on the housing 1. The electric push rod 7 is electrically connected to the control terminal. A sliding block 8 is disposed at the telescopic end of the electric push rod 7. The opposite sides of the two sliding blocks 8 are slidably connected to an extrusion frame 9. The extrusion frame 9 is provided with a heating device (not shown in the figure) for heat-sealing the packaging bag. The heating device is electrically connected to the control terminal. A second elastic member is fixedly connected between the sliding block 8 and the adjacent extrusion frame 9, wherein the second elastic member is a compression spring.

[0019] The specific working principle is as follows: When the operator needs to use this device to package a viscous liquid (hereinafter referred to as liquid), the operator puts the packaging bag substrate (the packaging bag substrate is a rolled packaging film) on the liquid outlet pipe 2, and starts the feeding device and the external conveying device through the control terminal. Using the existing packaging bag substrate supply method, the external conveying device continuously supplies the packaging bag substrate, and the packaging bag substrate moves from top to bottom along the liquid outlet pipe 2, and then the feeding device fills the liquid into the packaging bag substrate.

[0020] When the liquid in the packaging bag substrate is filled to the specified amount, the control terminal controls the feeding device to close, and the feeding device temporarily stops feeding. Then the control terminal controls all the first electromagnetic sliders 3 to open, and the first electromagnetic slider 3 drives the support frame 4 to move upward, and the support frame 4 drives all the clamping blocks 5 thereon to move upward, and the upper clamping block 5 moves along the adjacent limit frame 6. The clamping block 5 is limited by the limit frame 6, so that the two adjacent clamping blocks 5 move toward each other, and the first elastic member on the upper side is stretched, and the two adjacent clamping blocks 5 clamp the packaging bag substrate. As the first electromagnetic slider 3 moves upward, the support frame 4 drives all the clamping blocks 5 to move upward, and the clamping block 5 drives the packaging bag substrate to move upward.

[0021] After the clamping block 5 drives the packaging bag substrate to move upward, the operator turns on all the electric push rods 7 through the control terminal. The telescopic end of the electric push rod 7 extends out and drives the sliding block 8 to move. The sliding block 8 drives the extrusion frame 9 to move through the second elastic member, so that the two extrusion frames 9 move toward each other. The two extrusion frames 9 move to the lower side of the liquid outlet pipe 2 and stick to the packaging bag substrate to scrape off the liquid dripping from the lower side of the liquid outlet pipe 2. As the two sliding blocks 8 continue to move toward each other, the second elastic member of the sliding block 8 is compressed. Then the operator controls the telescopic ends of all the electric push rods 7 to move and reset through the control terminal, so that the sliding block 8 and the extrusion frame 9 move and reset, and the second elastic member of the sliding block 8 rebounds and resets. Then, the operator controls the first electromagnetic slider 3 to move downward through the control terminal. The first electromagnetic slider 3 drives all the clamping blocks 5 to move downward through the support frame 4, and the clamping blocks 5 drive the packaging bag substrate to move downward.

[0022] After the clamping block 5 drives the packaging bag substrate to move downward, the position on the packaging bag substrate that contacts the liquid moves downward, and the operator turns on all the electric push rods 7 again through the control terminal. The telescopic end of the electric push rod 7 drives the squeezing frame 9 to move through the sliding block 8, and the two squeezing frames 9 are again attached to the packaging bag substrate, and the second elastic member of the sliding block 8 is compressed. At this time, the operator turns on the heating equipment through the control terminal, the temperature of the squeezing frame 9 rises and the packaging bag substrate is heat-sealed, and the packaging bag substrate is driven up and down by the clamping block 5 to move upward when filling the liquid, and the squeezing frame 9 is used to scrape the liquid on the lower side of the liquid outlet pipe 2 into the packaging bag substrate, so that the amount of viscous liquid adhesion on the lower side of the liquid outlet pipe 2 is reduced, so that the amount of viscous liquid in the packaging bag substrate is more accurate, and when heat sealing is required, the packaging bag substrate moves downward, so that the position on the packaging bag substrate that contacts the liquid is away from its heat sealing position, so as to reduce the probability of liquid penetrating into the heat sealing position of the packaging bag substrate, thereby ensuring the sealing of the heat seal of the packaging bag substrate.

[0023] After the packaging bag substrate is heat-sealed once, the operator controls the first electromagnetic slider 3 to move downward through the control terminal. The first electromagnetic slider 3 drives all the clamping blocks 5 to move downward through the support frame 4. The upper first elastic member is reset and drives the clamping block 5 to move and reset. The lower clamping block 5 moves along the adjacent limit frame 6. The lower clamping block 5 is limited by the upper part of the lower limit frame 6 and moves, so that the two adjacent clamping blocks 5 on the lower side move toward each other. The lower first elastic member is stretched, and the lower clamping block 5 clamps the packaging bag substrate. As the first electromagnetic slider 3 moves downward, the first electromagnetic slider 3 drives the packaging bag substrate to move downward through the support frame 4 and the clamping block 5. Then the control terminal controls the first electromagnetic slider 3 to close, and the packaging bag substrate temporarily stops moving. Finally, the control terminal starts the cutting device, which cuts off the heat-sealed part of the packaging bag substrate. After cutting is completed, the first electromagnetic slider 3 drives the packaging bag substrate to move upward and reset through the support frame 4 and the clamping block 5, so that the lower first elastic member is reset. The above steps are repeated to continuously package the liquid.

[0024] When the liquid packaging is completed, the operator controls the electric push rod 7 and the first electromagnetic slider 3 to reset through the control terminal, and then turns off the feeding equipment, external conveying equipment, heating equipment, cutting equipment, the electric push rod 7 and the first electromagnetic slider 3, and finally cleans the device for the next use.

[0025] like Figure 4 、 Figure 6 and Figure 7 As shown, it also includes: a fixed rod 10, which has two and is respectively fixed to the position of the adjacent sliding block 8 on the housing 1, and the fixed rod 10 is fixed with a first limit block 11; a second limit block 12, which has two and is respectively fixed to the adjacent sliding block 8, and the opposite sides of the first limit block 11 and the adjacent second limit block 12 are respectively provided with a first inclined surface and a second inclined surface, and the second limit block 12 contacts the adjacent first limit block 11, and in the process of the second limit block 12 moving toward the adjacent first limit block 11, the first inclined surface of the first limit block 11 contacts the adjacent second inclined surface and guides the adjacent second limit block 12 so that the second limit block 12 moves along the first inclined surface of the adjacent first limit block 11. Initially, there is a distance between the second limit block 12 and the first limit block 11. The telescopic end of the electric push rod 7 is slidably connected to the sliding block 8 through a straight rod, and a reset spring is fixed between the sliding block 8 and the straight rod of the telescopic end on the electric push rod 7.

[0026] like Figure 3 、 Figure 6 and Figure 8As shown, a second electromagnetic slider 13 is fixed to the fixed portion of one of the electric push rods 7, and a second electromagnetic slide rail is provided at a position of the housing 1 near the second electromagnetic slider 13, and the second electromagnetic slide rail is electrically connected to the control terminal. The second electromagnetic slider 13 slides in the second electromagnetic slide rail of the housing 1, and the opposite sides of the two extrusion frames 9 are provided with spaced grooves 14, the width of the groove 14 is X, and the distance between the two grooves 14 is Y, X=Y. When two adjacent grooves 14 on different extrusion frames 9 are aligned, a gap composed of the two grooves 14 exists between the two extrusion frames 9, so that the gas in the packaging bag substrate can move upward through the grooves 14, reducing the amount of gas in the packaging bag substrate before heat sealing, thereby reducing the impact of the gas in the packaging bag substrate on the liquid. After the two extrusion frames 9 are misaligned (the misalignment distance is a multiple of X), the two extrusion frames 9 can bite each other, and the liquid outlet pipe 2 is located between the two extrusion frames 9. The groove 14 does not overlap with the projection of the liquid outlet pipe 2 on the sliding block 8, so as to ensure that the surface of the extrusion frame 9 at the liquid outlet pipe 2 is flat.

[0027] like Figure 7-Figure 9 As shown, it also includes: a rotating plate 15, the number of which is the same as the number of the extrusion frames 9, and they are respectively hinged to the adjacent extrusion frames 9, and the position of the hinge point between the rotating plate 15 and the adjacent extrusion frames 9 is located at the lower side of the extrusion frames 9. Taking the rotating plate 15 on the front side as an example, after the front side surface of the rotating plate 15 on the front side rotates and fits into the rear side surface of the adjacent extrusion frame 9, the rear side surface of the rotating plate 15 is flush with the rear side surface of the adjacent extrusion frame 9, and a third elastic member is fixed between the rotating plate 15 and the adjacent extrusion frame 9, wherein the third elastic member is a compression spring, and the rotating plate 15 is provided with a first recessed portion 16, the recessed depth of the first recessed portion 16 gradually increases from top to bottom, the width of the first recessed portion 16 is greater than the inner diameter of the liquid outlet pipe 2, and the first recessed portion 16 is used to wrap the liquid in the packaging bag on the lower side of the liquid outlet pipe 2 to reduce the probability of the liquid being squeezed into the groove 14.

[0028] like Figure 6 and Figure 7As shown, it also includes: third limit blocks 17, the number of which is the same as that of the second limit blocks 12, and they are respectively fixed to the adjacent first limit blocks 11, and the third limit blocks 17 are provided with guide inclined surfaces symmetrically distributed front and back. After the second limit block 12 contacts any guide inclined surface of the adjacent third limit block 17, along with the horizontal movement of the second limit block 12, the guide inclined surface of the third limit block 17 contacts the adjacent second inclined surface and guides the adjacent second limit block 12 to make the second limit block 12 move vertically. Initially, there is a distance between the third limit block 17 and the second limit block 12. The third limit block 17 is located between the adjacent second limit block 12 and the adjacent first limit block 11. When the second limit block 12 contacts the guide slope on the adjacent third limit block 17 away from the liquid outlet pipe 2, the rotating plate 15 moves to contact the packaging bag substrate, but the extrusion frame 9 does not contact the packaging bag substrate. The elastic coefficient of the third elastic member of the rotating plate 15 is smaller than the elastic coefficient of the second elastic member of the extrusion frame 9. The third elastic member of the rotating plate 15 is compressed first. When the second limit block 12 contacts the adjacent first limit block 11, the extrusion frame 9 and the rotating plate 15 are simultaneously pressed against the packaging bag substrate.

[0029] The specific working principle is as follows: When the extrusion frame 9 is not in contact with the packaging bag substrate and the extrusion frame 9 moves toward the packaging bag substrate, the extrusion frame 9 drives the rotating plate 15 to move. The upper side of the rotating plate 15 first contacts the packaging bag substrate, and the upper side of the rotating plate 15 contacts the lower side of the liquid outlet pipe 2 through the packaging bag substrate, scraping the viscous liquid adhered to the lower side of the liquid outlet pipe 2 into the packaging bag substrate. Then, the two rotating plates 15 move toward each other and squeeze each other through the packaging bag substrate. As the two rotating plates 15 squeeze each other, the rotating plate 15 gradually rotates to contact the extrusion frame 9. The third rotating plate 15 The elastic member is compressed and gradually adheres to the packaging bag substrate from top to bottom through the rotating plate 15, guiding the liquid adhered to the lower side of the liquid outlet pipe 2 and the packaging bag substrate into the packaging bag substrate, so as to reduce the probability of the liquid diffusing to the surroundings due to direct squeezing of the packaging bag substrate, thereby reducing the probability of the liquid flowing upward to the heat seal of the packaging bag substrate, and further reducing the impact of the liquid on the sealing of the packaging bag substrate, and wrapping the liquid on the lower side of the liquid outlet pipe 2 by the first recessed portion 16 to reduce the probability of the liquid being squeezed into the groove 14, thereby ensuring the normal circulation of gas in the groove 14.

[0030] In the process of the telescopic end of the electric push rod 7 extending and driving the sliding block 8, the sliding block 8 drives the second limit block 12 to move. When the second inclined surface of the second limit block 12 moves to contact with the third limit block 17, the extrusion frame 9 drives the rotating plate 15 to move to contact with the packaging bag substrate. The extrusion frame 9 does not contact the packaging bag substrate. As the second limit block 12 continues to move, the second limit block 12 moves downward along the guide inclined surface of the third limit block 17 away from the liquid outlet pipe 2. The second limit block 12 drives the rotating plate 15 to move downward through the sliding block 8 and the extrusion frame 9. The reset spring of the sliding block 8 is stretched, and the rotating plate 15 scrapes the liquid adhered to the lower side of the liquid outlet pipe 2 into the packaging bag substrate.

[0031] When the second limit block 12 moves downward along the guide slope of the third limit block 17 away from the liquid outlet pipe 2, the sliding block 8 drives the second limit block 12 to continue to move, and the second limit block 12 moves to the guide slope of the third limit block 17 close to the liquid outlet pipe 2. The reset spring of the sliding block 8 gradually rebounds, and the sliding block 8 drives the second limit block 12 to move upward, and the second limit block 12 moves along the guide slope of the third limit block 17 close to the liquid outlet pipe 2. As the second limit block 12 moves, the second limit block 12 gradually moves until it loses contact with the third limit block 17.

[0032] When the second limit block 12 moves to lose contact with the third limit block 17, the second inclined surface of the second limit block 12 moves to contact the first inclined surface of the first limit block 11 (since there is a distance between the second limit block 12 and the first limit block 11 initially, after the second limit block 12 moves to contact the first limit block 11, the extrusion frame 9 is already in contact with the packaging bag substrate, and the second elastic member of the sliding block 8 is compressed), along with the movement of the second limit block 12, the second limit block 12 moves downward along the first inclined surface of the first limit block 11, the second limit block 12 drives the sliding block 8 to move downward, the reset spring of the sliding block 8 is stretched, and the sliding block 8 drives the extrusion frame 9 to move downward, the two extrusion frames 9 are in contact with the packaging bag substrate and gradually move downward, so that the liquid in the packaging bag substrate moves downward and gathers, and the gas in the packaging bag substrate moves upward through the groove 14.

[0033] When the operator needs to heat-seal the packaging bag substrate, the operator turns on the second electromagnetic slider 13 through the control terminal. The second electromagnetic slider 13 drives the extrusion frame 9 to move through the electric push rod 7 and the sliding block 8, so that the two extrusion frames 9 move in an offset manner (the offset distance is a multiple of X). The adjacent grooves 14 on different extrusion frames 9 are offset, so that the two extrusion frames 9 can bite into each other. At this time, the operator repeats the steps of the above embodiment to heat-seal the packaging bag substrate.

[0034] When the telescopic end of the electric push rod 7 drives the extrusion frame 9 to move and reset through the sliding block 8, the sliding block 8 first moves and drives the second limit block 12 to move horizontally, the second elastic member of the sliding block 8 gradually rebounds and resets, and the second limit block 12 moves upward along the first inclined surface of the first limit block 11, so that the sliding block 8 moves upward (in the process of the sliding block 8 moving up and down, the reset spring of the sliding block 8 is deformed), and then the second limit block 12 moves until it contacts the third limit block 17, and the second limit block 12 moves and resets along the guide inclined surfaces on both sides of the third limit block 17 in turn.

[0035] When the second elastic member of the sliding block 8 rebounds and resets, the sliding block 8 starts to drive the extrusion frame 9 to move and reset. When the extrusion frame 9 drives the rotating plate 15 to move and the rotating plate 15 moves until it loses contact with the packaging bag substrate, the third elastic member of the rotating plate 15 rebounds and resets.

[0036] like Figure 7 and Figure 8 As shown, it also includes: a fixed ring 18, fixed to the liquid outlet pipe 2, the fixed ring 18 is slidably connected to the central symmetrically distributed blocking frames 19, after the front and rear blocking frames 19 move towards each other and contact, the two blocking frames 19 block the liquid outlet pipe 2 together; trigger rods 20, the number of which is the same as the number of blocking frames 19, and are respectively fixed to adjacent extrusion frames 9, the trigger rods 20 are made of flexible material, the extrusion force required for the deformation of the trigger rods 20 is greater than the sliding resistance of the blocking frames 19, and when the two blocking frames 19 are connected After the contact, if the two extrusion frames 9 continue to move toward each other, the trigger rod 20 will be deformed to reduce the extrusion force on the blocking frame 19 and reduce the probability of damage to the blocking frame 19. The trigger rod 20 is used to squeeze the adjacent blocking frame 19. The packaging bag substrate is located between the trigger rod 20 and the adjacent blocking frame 19. A second recessed portion 21 is provided on the upper side of the blocking frame 19. After the two blocking frames 19 contact, the two second recessed portions 21 together form a truncated cone-shaped recess with a diameter decreasing from top to bottom.

[0037] The specific working principle is as follows: In the above embodiment, the liquid adhering to the liquid outlet pipe 2 is scraped off by the squeezing frame 9 and the rotating plate 15. In this embodiment, the liquid adhering to the liquid pipe 2 is scraped off by the blocking frame 19. The rotating plate 15 no longer has the function of scraping off the liquid on the liquid outlet pipe 2, but only guides the scraped liquid by squeezing from top to bottom.

[0038] When the two squeezing frames 9 start to move toward each other (the first limit block 11 has not yet moved to contact the third limit block 17), the squeezing frame 9 drives the trigger rod 20 to move, and the trigger rod 20 squeezes the sealing frame 19 through the packaging bag substrate. The two sealing frames 19 move to contact each other and block the lower side of the liquid outlet pipe 2. When the two sealing frames 19 move to block the lower side of the liquid outlet pipe 2, the first limit block 11 will move to contact the third limit block 17, and the lower side of the liquid outlet pipe 2 will be blocked by the sealing frame 19, so that the liquid in the liquid outlet pipe 2 will no longer cause the amount of liquid in the packaging bag substrate to change due to natural dripping downwards, thereby ensuring the accuracy of the liquid amount in the packaging bag.

[0039] During the movement and reset of the squeezing frame 9, the squeezing frame 9 drives the trigger rod 20 to move and reset. When the operator needs to inject liquid into the packaging bag base material again, the liquid in the liquid outlet pipe 2 is sprayed out and squeezes the two second recessed portions 21, so that the upper sides of the two sealing frames 19 are compressed and move backward, thereby resetting the sealing frames 19.

[0040] When the liquid packaging is completed, the operator controls the electric push rod 7 and the first electromagnetic slider 3 to reset through the control terminal, and then turns off the feeding equipment, external conveying equipment, heating equipment, cutting equipment, the electric push rod 7 and the first electromagnetic slider 3, and finally cleans the device for the next use.

[0041] The above is merely an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included within the scope of protection of the present invention. Any content not elaborated in detail in the present invention belongs to the prior art known to those skilled in the art.

Claims

1. Suitable for precise metering and packaging of liquids with high viscosity, characterized by: Includes: A housing (1), wherein the housing (1) is provided with a liquid outlet pipe (2), the housing (1) is provided with a symmetrically distributed first electromagnetic slide rail, a first electromagnetic slider (3) is slidably connected in the first electromagnetic slide rail of the housing (1), the first electromagnetic slider (3) is fixedly connected to a support frame (4), the support frame (4) is slidably connected to two groups of clamping blocks (5) distributed up and down, the clamping blocks (5) in the same group are symmetrically distributed, and a first elastic member is fixedly connected between the clamping blocks (5) and the adjacent support frames (4); Limiting frames (6), the number of which is the same as the number of groups of the clamping blocks (5), and all of which are fixed to the housing (1), the limiting frames (6) being used to guide the adjacent symmetrically distributed clamping blocks (5) to adjust the distance between the adjacent symmetrically distributed clamping blocks (5); The electric push rods (7) are symmetrically distributed and are both arranged on the housing (1). The telescopic ends of the electric push rods (7) are provided with sliding blocks (8). The opposite sides of the two sliding blocks (8) are slidably connected to the extrusion frames (9). A second elastic member is fixed between the sliding blocks (8) and the adjacent extrusion frames (9).

2. The precise metering and packaging machine for liquids with a certain viscosity according to claim 1, characterized in that: Also included are: There are two fixing rods (10), which are respectively fixed to positions on the housing (1) close to the adjacent sliding blocks (8), and the fixing rods (10) are fixed to a first limiting block (11); The second limit block (12) has two portions, and is respectively fixed to the adjacent sliding block (8). The first limit block (11) and the second limit block (12) are provided with a first inclined surface and a second inclined surface on opposite sides thereof. The first inclined surface of the first limit block (11) is used to contact the adjacent second inclined surface and guide the adjacent second limit block (12) so that the second limit block (12) moves along the first inclined surface of the adjacent first limit block (11). There is a distance between the second limit block (12) and the first limit block (11). The telescopic end of the electric push rod (7) is slidably connected to the sliding block (8) through a straight rod. A reset tension spring is fixed between the sliding block (8) and the straight rod at the telescopic end of the electric push rod (7).

3. The precise metering and packaging machine for liquids with a certain viscosity according to claim 2, characterized in that: A second electromagnetic slider (13) is fixedly connected to a fixed portion of one of the electric push rods (7), a second electromagnetic slide rail is provided on the housing (1) near the second electromagnetic slide rail (13), the second electromagnetic slide rail (13) slides in the second electromagnetic slide rail of the housing (1), and grooves (14) are provided at intervals on opposite sides of the two extrusion frames (9).

4. The precise metering and packaging machine for liquids with a certain viscosity according to claim 3, characterized in that: The liquid outlet pipe (2) is located between the two extrusion frames (9), and the groove (14) does not overlap with the projection of the liquid outlet pipe (2) on the sliding block (8).

5. The precise metering and packaging machine for liquids with a certain viscosity according to claim 4, characterized in that: Also included are: The number of the rotating plates (15) is the same as the number of the extrusion frames (9), and the rotating plates (15) are respectively hinged to the adjacent extrusion frames (9), and the hinge points between the rotating plates (15) and the adjacent extrusion frames (9) are located on the lower side of the extrusion frames (9), and a third elastic member is fixed between the rotating plates (15) and the adjacent extrusion frames (9).

6. The precise metering and packaging machine for liquids with a certain viscosity according to claim 5, characterized in that: The rotating plate (15) is provided with a first recessed portion (16).

7. The precise metering and packaging machine for liquids with a certain viscosity according to claim 6, characterized in that: The width of the first recessed portion (16) is greater than the inner diameter of the liquid outlet pipe (2).

8. The precise metering and packaging machine for liquids with a certain viscosity according to claim 2, characterized in that: Also included are: The number of the third limiting blocks (17) is the same as that of the second limiting blocks (12), and they are respectively fixed to the adjacent first limiting blocks (11). The third limiting blocks (17) are provided with symmetrically distributed guiding inclined surfaces. The guiding inclined surfaces of the third limiting blocks (17) are used to contact the adjacent second inclined surfaces and guide the adjacent second limiting blocks (12). There is a distance between the third limiting blocks (17) and the second limiting blocks (12). The third limiting blocks (17) are located between the adjacent second limiting blocks (12) and the adjacent first limiting blocks (11).

9. The precise metering and packaging machine for viscous liquids according to claim 5, characterized in that: Also included are: A fixed ring (18) is fixedly connected to the liquid outlet pipe (2), and the fixed ring (18) is slidably connected to a centrally symmetrically distributed blocking frame (19), and the blocking frame (19) is used to block the liquid outlet pipe (2); The trigger rods (20) are the same in number as the blocking frames (19) and are respectively fixed to adjacent extrusion frames (9). The trigger rods (20) are used to squeeze adjacent blocking frames (19).

10. The precise metering and packaging machine for viscous liquids according to claim 9, characterized in that: A second recessed portion (21) is provided on one side of the blocking frame (19) close to the liquid outlet pipe (2).

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