Back sealing type paste liquid packaging machine capable of preventing residual paste liquid on discharging nozzle from dripping

Abstract

The utility model relates to a back sealing type paste liquid packaging machine capable of preventing residual paste liquid on a discharging nozzle from dripping. The back sealing type paste liquid packaging machine comprises a machine frame, a discharging device, a heat sealing device and a residual liquid recycling device. A packaging workbench is arranged on the rack; the discharging device is arranged on the packaging workbench. The discharging device comprises a hopper, a feeding device and a discharging pipe connected with the hopper. The packing material traction assembly is arranged in front of the discharging device. The heat sealing device is arranged below the packing material traction assembly; and the residual liquid recovery device comprises a residual liquid suction pipe penetrating through the bag making device and a recovery controller for controlling the residual liquid suction pipe to recover the residual liquid of the blanking pipe to the hopper. According to the back sealing type paste liquid packaging machine, the residual liquid recycling device is arranged, residual paste liquid on the discharging nozzle can be prevented from dripping to a sealing opening, and therefore the product packaging quality and efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of paste liquid packaging machines, in particular to a back-sealed paste liquid packaging machine capable of preventing residual paste liquid from dripping from a feeding nozzle. Background Art

[0002] A back-seal packaging machine is a device that fills pastes into sealed packaging bags. Since ordinary back-seal packaging machines are generally used to package pastes, that is, the packaging material is first folded into a bag shape, and then the paste on the hopper is discharged into the bag-shaped packaging material through a discharge device, and finally sealed. Since the fluidity of general pastes is poor, the paste will not remain on the discharge nozzle of the discharge tube. For semi-fluid pastes such as liquid paste, if the above-mentioned equipment is used for packaging, liquid paste will often remain at the discharge nozzle. When the residual liquid paste drips onto the seal, it will seriously affect the sealing effect. In severe cases, it will lead to the situation that the seal cannot be made, seriously affecting the quality of the product. In addition, when the seal cannot be made, it is necessary to stop the machine and remove the problematic products, which greatly reduces production efficiency.

[0003] How to design a back-sealed liquid paste packaging machine suitable for packaging semi-fluid pastes such as liquid paste has become a technical problem that needs to be solved urgently in this field. Summary of the Invention

[0004] The utility model aims to solve the deficiencies of the prior art and provide a back-sealed liquid paste packaging machine which can prevent residual liquid paste from dripping from a feeding nozzle.

[0005] The technical solution adopted by the utility model is: a back-sealed liquid paste packaging machine that can prevent residual liquid paste from dripping from the feeding nozzle, comprising:

[0006] A frame, wherein a packaging workbench is provided on the frame;

[0007] A feeding device is provided on the packaging workbench; the feeding device comprises a hopper, a feeding device and a feeding pipe connected to the hopper;

[0008] The packaging material pulling assembly is arranged in front of the unloading device;

[0009] A heat sealing device is provided below the packaging material pulling assembly; the heat sealing device comprises a bag maker for the feeding pipe to pass through, a side sealing assembly provided on the side of the bag maker, and a transverse sealing assembly provided below the bag maker and capable of moving up and down; and,

[0010] The residual liquid recovery device comprises a residual liquid suction pipe running through the bag making device and a recovery controller for controlling the residual liquid suction pipe to recover the residual liquid from the feeding pipe to the hopper.

[0011] Preferably, the free end of the discharge pipe is provided with a discharge nozzle, and the free end of the residual liquid suction pipe is provided with an elbow suction nozzle, and the elbow suction nozzle is provided obliquely below the discharge nozzle.

[0012] Preferably, the recovery controller includes a pneumatic valve connected to the residual liquid suction pipe and a suction drive source for controlling the pneumatic valve to suck the residual liquid back into the hopper.

[0013] Preferably, the feeding device includes a feeding cylinder and a pneumatic metering valve for quantitatively feeding the paste in the hopper into the packaging material of the bag maker through a feeding pipe.

[0014] Preferably, the bag making device is in the shape of a hollow cylinder.

[0015] Preferably, the side sealing assembly includes two symmetrically designed side sealing clamps, a side sealing driving source for controlling the side sealing clamps to move toward or away from each other, and a fixing plate fixed to the frame.

[0016] Preferably, the side sealing clamp includes a heat chuck movably mounted on a fixed plate, and the heat chuck is provided with two guide rods movably mounted on the fixed plate on the side away from the bag maker, and the other ends of the two guide rods are connected to a push plate connected to the side sealing drive source.

[0017] Preferably, the transverse sealing assembly includes a transverse sealing clamp and a transverse sealing driving source for driving the transverse sealing clamp to move toward or away from the frame.

[0018] Preferably, the transverse sealing assembly is connected to a lifter that can drive the entire transverse sealing assembly to rise and fall.

[0019] Preferably, the lifter includes a lifting push plate connected to the transverse sealing assembly and a lifting drive source for controlling the lifting and lowering of the lifting push plate.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] This utility model's back-seal liquid cream packaging machine is equipped with a residual liquid recovery device. This device uses a residual liquid suction pipe installed within the bag maker. After the liquid cream is injected into the packaging bag through the feed pipe, the recovery controller is activated to suck away the residual cream from the feed nozzle of the feed pipe and return it to the hopper. This design prevents residual cream from dripping onto the sealing surface, significantly improving product packaging quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 This is a schematic diagram of the positions of the inner side sealing assembly and the horizontal sealing assembly of the safety cover.

[0024] Figure 3 It is a schematic diagram of the principle of the residual liquid recovery device.

[0025] The numbers in the figure indicate:

[0026] 1-frame, 11-packaging workbench, 12-safety cover, 2-unloading device, 21-hopper, 22-feeding device, 221-feeding cylinder, 222-pneumatic metering valve, 23-unloading pipe, 231-unloading nozzle, 3-packaging material traction assembly, 31-unwinding roller, 32-traction roller, 4-heat sealing device, 41-bag maker, 42-side sealing assembly, 421-side sealing clamp, 4211- Hot chuck, 4212-guide rod, 4213-push plate, 4214-push rod, 422-side seal drive source, 423-fixed plate, 43-transverse seal assembly, 431-transverse seal clamp, 44-lifter, 441-lifting push plate, 442-lifting drive source, 5-residual liquid recovery device, 51-residual liquid suction pipe, 511-elbow suction nozzle, 52-pneumatic valve, 53-suction drive source, 6-packaging material. DETAILED DESCRIPTION

[0027] To deepen the understanding of the present invention, the present invention will be further described below in conjunction with implementation examples and accompanying drawings. The present invention can be implemented in the following ways:

[0028] Reference Figure 1-3 A back-sealed liquid paste packaging machine that can prevent residual paste from dripping from a feeding nozzle includes a frame 1 and a feeding device 2 arranged on the frame 1, a packaging material traction component 3, a heat sealing device 4 and a residual liquid recovery device 5.

[0029] Specifically, the frame 1 is provided with a packaging workbench 11. The unloading device 2 is disposed on the packaging workbench 11; the unloading device 2 comprises a hopper 21, a feeding device 22, and a unloading pipe 23 connected to the hopper 21. The free end of the unloading pipe 23 is provided with a unloading nozzle 231. The feeding device 22 comprises a feeding cylinder 221 and a pneumatic metering valve 222, which quantitatively delivers the paste in the hopper 21 through the unloading pipe 23 to the packaging material in the bag maker. The feeding cylinder 221 controls the pneumatic metering valve 222 to pump a quantitative amount of the paste in the hopper 21 through the unloading pipe 23 into the packaging material 6.

[0030] The packaging material pulling assembly 3 is arranged in front of the unloading device 2. The packaging material pulling assembly 3 is provided with a reel 31 and a plurality of pulling rollers 32. The packaging material 6 mounted on the reel 31 is first unwound by the reel 31 and then pulled into the heat sealing device 4 by the plurality of pulling rollers 32.

[0031] The heat-sealing device 4 is positioned below the packaging material pulling assembly 3. It comprises a bag maker 41 through which the feeding tube 23 passes, a side-sealing assembly 42 positioned to the side of the bag maker 41, and a transverse-sealing assembly 43 positioned below the bag maker 41 and capable of moving up and down. A safety cover 12 is provided on the frame 1, extending over the side-sealing assembly 42 and transverse-sealing assembly 43 to enhance the safety of the equipment. The bag maker 41 is hollow and cylindrical, used to fold the packaging material 6 into bags. The side-sealing assembly 42 comprises two symmetrical side-sealing clamps 421, a side-sealing drive source 422 that controls the movement of the side-sealing clamps 421 toward or away from each other, and a fixed plate 423 fixed to the frame 1. The side-sealing clamps 421 include a heat chuck 4211 movably mounted on the fixed plate 423. The heat chuck 4211 is connected to a heating source. The side-sealing drive source 422 is mounted on the fixed plate 423. The heated chuck 4211 is provided with two guide rods 4212 movably mounted on a fixed plate 423 on the side away from the bag maker 41. The other ends of the guide rods 4212 are connected to push plates 4213, which are connected to a side-sealing drive source 422. The side-sealing drive source 422 drives the push plates 4213 to move left and right via push rods 4214. The push plates 4213 then drive the guide rods 4212, thereby driving the heated chuck 4211 to move left and right, thereby achieving side sealing of the packaging material 6 within the bag maker 41. The transverse sealing assembly 43 includes a transverse sealing clamp 431 and a transverse sealing drive source that drives the transverse sealing clamp 431 toward or away from the frame 1. The transverse sealing clamp 431 is connected to a heating source. The transverse sealing drive source is located within the frame 1. The transverse sealing assembly 43 is connected to a lifter 44 that drives the entire transverse sealing assembly 43 upward and downward. The lifter 44 includes a lift plate 441 connected to the transverse sealing assembly 43 and a lift drive 442 that controls the lift plate 441. The lift drive 442 controls the lift plate 441, thereby driving the entire transverse sealing assembly 43 downward. As the transverse sealing assembly 43 descends, it simultaneously drags the packaging material 6 downward.

[0032] The residual liquid recovery device 5 includes a residual liquid suction pipe 51 that passes through the bag maker 41 and a recovery controller that controls the residual liquid suction pipe 51 to recover the residual liquid from the discharge pipe 23 to the hopper 21. The free end of the residual liquid suction pipe 51 is provided with an elbow suction nozzle 511, and the elbow suction nozzle 511 is provided obliquely below the discharge nozzle 231. The recovery controller includes a pneumatic valve 52 connected to the residual liquid suction pipe 51 and a suction drive source 53 that controls the pneumatic valve 52 to suck the residual liquid back into the hopper 21. After the discharge pipe 23 injects the paste liquid into the packaging bag, the suction drive source 53 controls the pneumatic valve 52 to suck away the paste liquid remaining on the discharge nozzle 231 of the discharge pipe 23 and recover it into the hopper 21. This design can prevent the residual paste liquid on the discharge nozzle 231 from dripping to the sealing part, thereby greatly improving the quality and efficiency of product packaging.

[0033] Working principle: Before packaging, the hot clamp 4211 of the side sealing assembly 42 and the transverse sealing clamp 431 of the transverse sealing assembly 43 are preheated, and then the equipment is started, and the packaging material 6 on the packaging material traction assembly 3 is pulled into the bag maker 41 through the traction roller 32; the side sealing drive source 422 of the side sealing assembly 42 drives the push plate 4213 through the push rod 4214 to drive the two hot clamps 4211 to move towards each other to seal the packaging material 6 on the side. After the side sealing is completed, the two hot clamps 4211 are released; then the lifting drive source 442 controls the lifting push plate 441 to drive the entire transverse sealing assembly 43 to rise, and the transverse sealing drive source of the transverse sealing assembly 43 is Control the transverse sealing clamp 431 to clamp the packaging material 6 for transverse sealing; then, the feeding cylinder 221 of the discharge device 2 controls the pneumatic metering valve 222 to pump the paste liquid in the hopper 21 into the packaging material 6 through the discharge pipe 23 in a quantitative manner; after the discharge pipe 23 injects the paste liquid into the packaging bag, the suction drive source 53 controls the pneumatic valve 52 to suck away the paste liquid remaining on the discharge nozzle 231 of the discharge pipe 23 and recover it into the hopper 21; finally, the lifting drive source 442 controls the lifting push plate 441 to drive the entire transverse sealing assembly 43 to descend the wall and at the same time drag the packaging material 6 downward; repeat the above steps continuously to seal and package the paste liquid.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A back-sealed liquid paste packaging machine that can prevent residual paste from dripping from the feeding nozzle, characterized in that: include: A frame (1), wherein a packaging workbench (11) is provided on the frame (1); A feeding device (2) is provided on the packaging workbench (11); the feeding device (2) comprises a hopper (21), a feeding device (22) and a feeding pipe (23) connected to the hopper (21); A packaging material pulling assembly (3) is arranged in front of the unloading device (2); A heat sealing device (4) is arranged below the packaging material pulling assembly (3); the heat sealing device (4) includes a bag maker (41) for the feeding pipe (23) to pass through, a side sealing assembly (42) arranged on the side of the bag maker (41), and a transverse sealing assembly (43) arranged below the bag maker (41) and capable of moving up and down; and, The residual liquid recovery device (5) comprises a residual liquid suction pipe (51) penetrating the bag making device (41) and a recovery controller for controlling the residual liquid suction pipe (51) to recover the residual liquid from the feeding pipe (23) to the hopper (21).

2. A back-sealed liquid paste packaging machine capable of preventing residual paste from dripping from a feed nozzle according to claim 1, characterized in that: The free end of the discharge pipe (23) is provided with a discharge nozzle (231), and the free end of the residual liquid suction pipe (51) is provided with an elbow suction nozzle (511), and the elbow suction nozzle (511) is provided obliquely below the discharge nozzle (231).

3. A back-sealed liquid paste packaging machine capable of preventing residual liquid paste from dripping from a feeding nozzle according to claim 2, characterized in that: The recovery controller comprises a pneumatic valve (52) connected to the residual liquid suction pipe (51) and a suction driving source (53) for controlling the pneumatic valve (52) to suck the residual liquid back into the hopper (21).

4. A back-sealed liquid paste packaging machine capable of preventing residual liquid paste from dripping from a feed nozzle according to any one of claims 1 to 3, characterized in that: The feeding device (22) comprises a feeding cylinder (221) and a pneumatic metering valve (222) for quantitatively feeding the paste in the hopper (21) to the packaging material (6) of the bag maker (41) through a feeding pipe (23).

5. A back-sealed liquid paste packaging machine capable of preventing residual liquid paste from dripping from a feeding nozzle according to any one of claims 1 to 3, characterized in that: The bag sealing device is in the shape of a hollow cylinder.

6. A back-sealed liquid paste packaging machine capable of preventing residual liquid paste from dripping from a feeding nozzle according to any one of claims 1 to 3, characterized in that: The side sealing assembly (42) comprises two symmetrically designed side sealing clamps (421), a side sealing driving source (422) for controlling the side sealing clamps (421) to move toward or away from each other, and a fixing plate (423) fixed on the frame (1).

7. A back-sealed liquid paste packaging machine capable of preventing residual paste from dripping from a feed nozzle according to claim 6, characterized in that: The side sealing clamp (421) includes a heat chuck (4211) movably mounted on a fixed plate (423), and the heat chuck (4211) is provided with two guide rods (4212) movably mounted on the fixed plate (423) on a side away from the bag sealing device, and the other ends of the two guide rods (4212) are connected to a push plate (4213) connected to the side sealing drive source (422).

8. A back-sealed liquid paste packaging machine capable of preventing residual liquid paste from dripping from a feed nozzle according to claim 1, 2, 3 or 7, characterized in that: The transverse sealing assembly (43) comprises a transverse sealing clamp (431) and a transverse sealing driving source for driving the transverse sealing clamp (431) to move toward or away from the frame (1).

9. A back-sealed liquid paste packaging machine capable of preventing residual liquid paste from dripping from a feed nozzle according to claim 1, 2, 3 or 7, characterized in that: The transverse sealing assembly (43) is connected to a lifter (44) which can drive the entire transverse sealing assembly (43) to rise and fall.

10. The back-sealed liquid paste packaging machine capable of preventing residual liquid paste from dripping from the feeding nozzle according to claim 9, characterized in that: The lifter (44) includes a lifting push plate (441) connected to the transverse sealing assembly (43) and a lifting drive source (442) for controlling the lifting and lowering of the lifting push plate (441).

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