Bag feeding type double-vacuum packaging machine

Abstract

The utility model relates to the technical field of packaging machines, in particular to a bag feeding type double-vacuum packaging machine which comprises a rotating disc, a bag feeding station, a zipper opening station, a bag opening station, a discharging station, a bag opening cleaning station and a transferring station are sequentially arranged along the outer circumference of the rotating disc, and a bag opening component doing reciprocating motion is arranged between the bag opening station and the discharging station. The vacuum packaging machine has the advantages that alternate operation of the two vacuum chambers is achieved, when one chamber operates, the other chamber can receive new packaging bags, shutdown waiting is not needed, continuous operation is achieved, and production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of packing machine, concretely to a double vacuum packing machine of bag feeding type. BACKGROUND

[0002] The bag feeding type packing machine is widely used in the material packing of food, medicine, daily chemical and other fields as an automatic packing equipment, in order to improve the shelf life of food, the common method is to extract vacuum to the packing bag.

[0003] The existing bag feeding type vacuum packing machine is mainly the following two kinds: 1, the double bag vacuum machine of patent application number CN202520607125.4, including the vacuum disc of the circumference uniform distribution installed on the edge of the rotating disc, the packing bag of completing filling is sent to the vacuum disc to extract vacuum;2, the bag feeding type packing machine guide pipe type vacuum component of patent application number CN201320454669.9, including the column standing on the frame and the vacuum pipe installed on the column, after the bag feeding type packing machine passes through the discharging station, the machine reaches the vacuum extraction station, at this time, the vacuum pipe is inserted into the bag under the driving of the cylinder, then the machine clamp pulls outwards to straighten the bag opening, and the machine sends the vacuum extraction command to start the vacuum pipe to extract the gas in the bag, finally, the cylinder rises to drive the vacuum pipe to rise and pull out the bag.

[0004] However, the above two vacuum extraction devices have the following defects in actual use: 1, the rotating disc type vacuum device disclosed in the first patent document needs to additionally set the rotating disc, and evenly distribute multiple vacuum discs on the rotating disc, the number of vacuum discs increases, which increases the failure rate, and if one of them fails, it needs to be completely overhauled to find out;2, the guide pipe type vacuum extraction device disclosed in the second patent document is set on the vacuum extraction station of the frame, if the size of the packing bag is large, the equipment needs to be paused to wait during vacuum extraction, which leads to low production efficiency.

[0005] When filling the food with juice using the above bag feeding type vacuum packing machine, the juice will adhere to the inner wall of the lower opening of the hopper, and will drip on the workbench of the equipment after accumulation, which affects the workshop hygiene, and will also adhere to the bag opening of the packing bag, affecting the heat sealing of the bag opening. UTILITY MODEL CONTENTS

[0006] The utility model solves the technical problems of the prior art, and provides a double vacuum packing machine of bag feeding type.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a bag-type double vacuum packaging machine, including a turntable, with a bag-loading station, a bag-opening station, a material-dropping station, and a transfer station arranged sequentially along the outer circumference of the turntable. A bag-supporting component that reciprocates is provided between the bag-opening station and the material-dropping station. A vacuum-drawing station is provided on one side of the transfer station, and a conveying station for transporting finished products is provided below the vacuum-drawing station. The vacuum-drawing station has two vacuum-drawing components arranged side-by-side and a transfer component for transporting packaging bags. The vacuum-drawing component includes a moving plate and a fixed plate arranged opposite each other. A drive mechanism is provided on the end face of the moving plate facing away from the fixed plate. A mold-closing assembly that moves toward a fixed plate forms a vacuum chamber after the moving plate and the fixed plate close together. The moving plate is provided with a vacuum hole. The fixed plate is provided with a bag clamping assembly for clamping the packaging bag and a sealing assembly for sealing the packaging bag. The moving plate is provided with a bag supporting assembly. The transfer assembly includes a crossbeam erected between two vacuum assemblies. The crossbeam is provided with a first drive mechanism for driving the packaging bag to move between the two vacuum chambers. The first drive mechanism is provided with two second drive mechanisms for transferring the packaging bag from the previous workstation to the vacuum workstation. The second drive mechanism is provided with a third drive mechanism for clamping the packaging bag and driving it to rise and fall.

[0008] The present invention, which has the above-mentioned features, uses two parallel vacuum pumping devices in conjunction with a transfer assembly to enable two vacuum chambers to operate alternately. When one chamber is operating, the other chamber can receive new packaging bags without stopping the machine to wait, thus achieving continuous operation and improving production efficiency.

[0009] A further feature of this invention is that the mold-closing assembly includes a first guide rod and guide sleeve assembly disposed on a vertical surface outside the moving plate, a second guide rod and guide sleeve assembly disposed at the bottom of the moving plate, and a mold-closing cylinder. The first guide rod and guide sleeve assembly is located at the upper part of the vertical surface, and the second guide rod and guide sleeve assembly is located at the bottom near another vacuum assembly. The first guide rod of the first guide rod and guide sleeve assembly and the second guide rod of the second guide rod and guide sleeve assembly both extend to connect with a fixed plate. A synchronization plate is provided at the end of the first guide rod and the second guide rod away from the fixed plate. The output end of the mold-closing cylinder is connected to the moving plate, and the mold-closing cylinder is fixed on the synchronization plate.

[0010] The present invention, which has the above features, uses only a double guide rod and guide sleeve assembly to form two-point support, and ensures that the double guide rods extend and retract synchronously through a synchronous plate, so as to ensure that the moving plate does not deviate or shake when it moves.

[0011] A further feature of this invention is that a guide member is provided on the side of the fixed plate near the first driving mechanism. The guide member includes a first surface that is attached to and connected to the side of the fixed plate, a second surface that is perpendicularly connected to the first surface, and a third surface that is connected to the second surface. The second surface is parallel to the moving plate, and the third surface is inclined toward the side away from the moving plate. The first surface, the second surface, and the third surface are all bent.

[0012] The present invention, which has the above-mentioned features, guides the packaging bag to enter the vacuum chamber accurately by setting a guide component, thereby improving the quality of vacuum operation; the three sides of the guide component are bent and formed, and the integrated structure improves the rigidity of the guide component.

[0013] A further feature of this invention is that the bag-supporting assembly includes a bag-supporting cylinder fixedly installed at the bottom of a movable plate. The bag-supporting cylinder is arranged vertically, and its output end passes through the movable plate and is fitted with a base plate. The base plate has a support plate that is in contact with its end face. An adjusting plate is fixedly connected to the bottom of the support plate. The adjusting plate has at least one adjusting groove distributed vertically. The side of the base plate that is in contact with the adjusting plate has a connecting hole corresponding to the adjusting groove. Fasteners for connecting the adjusting plate and the base plate pass through the adjusting groove and the connecting hole.

[0014] The present invention, which has the above features, has a bag-supporting cylinder that drives the pallet to rise and fall. The pallet supports the bottom of the packaging bag, causing the packaging bag to hang down, thus preventing the bag opening from stretching and deforming due to its own weight and improving the vacuuming effect. The adjustment groove on the adjustment plate can flexibly adjust the height of the pallet to adapt to packaging bags of different sizes.

[0015] A further feature of this invention is that the sealing assembly includes a sealing cylinder fixedly mounted on a fixed plate. The output end of the sealing cylinder passes through the fixed plate in a horizontal direction and is connected to a transition block. A heat sealing strip is connected to one side of the transition block facing the moving plate. A pad adapted to the heat sealing strip is provided inside the moving plate.

[0016] The present invention, which has the above features, has the following characteristics: the sealing component is integrated into the vacuum chamber, and the sealing can be performed directly after vacuuming, simplifying the process; the heat sealing strip and the pad block cooperate to ensure a firm and flat seal.

[0017] A further feature of this invention is that the bag clamping assembly includes a bag clamping cylinder fixedly mounted on a fixed plate. The output end of the bag clamping cylinder passes through the fixed plate in a horizontal direction and is connected to a first connecting rod. The end of the first connecting rod away from the bag clamping cylinder is hinged to a first swing arm arranged in a vertical direction. The end of the first swing arm away from the first connecting rod is connected to a bag clamping plate arranged in a horizontal direction. The bag clamping plate is parallel to the opening of the packaging bag. A guide block is provided inside the fixed plate. The first swing arm passes through the guide block and is hinged to the guide block. An insertion groove is provided on the bag clamping plate. An anti-collision strip fixedly connected to the bag clamping plate is inserted into the insertion groove. An anti-collision block adapted to the anti-collision strip is provided at the bottom of the transition block.

[0018] The present invention, which has the above features, enables the bag clamping assembly and the sealing assembly to be arranged simultaneously in the fixed plate through the transmission mechanism of the connecting rod and the swing arm; and avoids the bag clamping plate from deviating by setting the guide block to constrain the swing trajectory of the first swing arm.

[0019] A further feature of this invention is that the material feeding station includes a hopper, the hopper includes a hopper section and a cylindrical section located below the hopper section, the cylindrical section is fitted with a collecting cylinder, the inner diameter of the collecting cylinder is larger than the outer diameter of the cylindrical section, the bottom of the collecting cylinder is located below the cylindrical section, the bottom of the collecting cylinder is provided with an annular groove, the inner diameter of the annular groove is equal to the inner diameter of the cylindrical section, the bottom of the cylindrical section is provided with a flared opening that slopes inward toward the annular groove, the upper part of the collecting cylinder is provided with at least one vacuum tube, the opening of the vacuum tube is connected to the cylindrical wall of the collecting cylinder, the outside of the collecting cylinder is provided with a bag-supporting assembly for opening the bag opening, and the outside of the hopper is provided with a first lifting assembly for driving the hopper to rise and fall.

[0020] The present invention, which has the above-mentioned features, expands the bag opening through the bag-supporting assembly during material filling to prevent the hopper cylinder from touching the bag opening, thereby preventing the juice inside the material from wetting the bag opening and affecting the subsequent heat sealing. Then, the first lifting assembly lowers the hopper to increase the depth of the cylinder inserted into the bag, improve the accuracy of material dispensing, and further ensure that the juice inside the material does not contaminate the bag opening. By setting a collecting cylinder with a flared opening in the cylinder, the juice is guided into the annular groove, and a vacuum tool is used to remove the juice, preventing juice from dripping.

[0021] A further feature of this invention is that the bag-supporting assembly includes an installation cylinder sleeved outside the collection cylinder, a first arc-shaped support plate and a second arc-shaped support plate surrounding the outer circumference of the installation cylinder. A first hinge seat and a second hinge seat are symmetrically arranged on the outer circumference of the installation cylinder. The first hinge seat is hinged to the first arc-shaped support plate, and the second hinge seat is hinged to the second arc-shaped support plate. A first and a second U-shaped arm are respectively connected to the outside of the first and second hinge seats. The two ends of the first U-shaped arm are placed outside the second U-shaped arm, and their ends are abutted and hinged together. A bag-supporting cylinder is provided outside the first hinge seat in a vertical direction. The output end of the bag-supporting cylinder is set downward and hinged to a swing arm. The end of the swing arm that is not connected to the bag-supporting cylinder is connected to the first arc-shaped support plate and the first U-shaped arm.

[0022] The present invention, which has the above-mentioned features, clarifies the driving structure of the arc-shaped support plate. Through the coordinated action of the cylinder, the hinge seat, and the U-shaped arm, the synchronous opening and closing of the arc-shaped support plate is realized, and the arc-shaped support plate can be accurately reset to ensure the bag-supporting effect.

[0023] A further feature of this invention is that a second lifting assembly is provided outside the mounting cylinder to drive its lifting and lowering. The second lifting assembly includes a pull rod connected to an external driving source and a linkage arm disposed at the upper end of the pull rod. The linkage arm is connected to the mounting cylinder. A column is disposed outside the pull rod. A first mounting plate is disposed on the column. A second mounting plate is disposed on the pull rod. The second mounting plate is located above the first mounting plate. A guide rod is disposed between the first mounting plate and the second mounting plate. A guide sleeve adapted to the guide rod is embedded on the second mounting plate.

[0024] The present invention, which has the above-mentioned features, is characterized by: setting a second lifting component to allow the arc-shaped support plate to descend and extend into the bag opening before opening the bag, thus ensuring the stability of the bag and preventing material spillage; setting a first mounting plate, a second mounting plate, a guide rod, and a guide sleeve to limit the lifting trajectory of the pull rod and prevent the bag-supporting component from deviating during lifting.

[0025] A further feature of this invention is that an oil receiving assembly is installed on the column. The oil receiving assembly includes a third mounting plate installed on the column and a support fixed to the end of the third mounting plate away from the column. An oil receiving cylinder is installed on the support. An oil receiving plate is connected to the output end of the oil receiving cylinder. The oil receiving plate is located below the hopper and is driven to move closer to or away from the hopper by the oil receiving cylinder.

[0026] The present invention, which has the above-mentioned features, has an oil receiving tray to catch any remaining juice in the annular groove, preventing the juice from dripping onto the bag opening.

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the device according to an embodiment of the present utility model.

[0029] Figure 2 This is a schematic diagram of the vacuum station in an embodiment of the present invention.

[0030] Figure 3 This is a schematic diagram of the mold closing assembly and support assembly in an embodiment of the present utility model.

[0031] Figure 4 This is a structural schematic diagram of the fixing plate, sealing assembly, and bag clamping assembly of this utility model embodiment.

[0032] Figure 5 This is a schematic diagram of the structure of the movable plate and bag assembly according to an embodiment of the present utility model.

[0033] Figure 6 This is a schematic diagram of the structure of the bag assembly according to an embodiment of the present utility model.

[0034] Figure 7 This is a schematic diagram of the material unloading station in an embodiment of this utility model.

[0035] Figure 8 This is a cross-sectional view of the material unloading station in an embodiment of this utility model.

[0036] Figure 9 This is a schematic diagram of the structure of the bag support assembly after removing the mounting cylinder in an embodiment of this utility model.

[0037] Figure 10 This is an exploded view of the hopper, collecting cylinder, and mounting cylinder of an embodiment of this utility model. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings:

[0039] like Figures 1-10 The illustrated double vacuum packaging machine includes a frame 1 and a turntable 2 mounted on the frame 1. Along the outer circumference of the turntable 2, there are sequentially arranged a bag loading station 3, a bag opening station 4, a material unloading station 5, and a transfer station 6. A bag support component 7 that performs reciprocating motion is provided between the bag opening station 4 and the material unloading station 5. A zipper opening and coding station 8 can be set between the bag loading station 3 and the bag opening station 4 as needed. A bag mouth cleaning station can be set between the material unloading station 5 and the transfer station 6 to clean the material adhering to the bag mouth. A vacuuming station 10 is provided on one side of the transfer station 6. Below the vacuuming station 10, there is a conveying station 11 for conveying finished products. Several gripper assemblies 12 corresponding to each station are provided on the circumference of the turntable 2.

[0040] The vacuuming station 10 includes two vacuuming components arranged side by side and a bag conveying component. The vacuuming components include a movable plate 101 and a fixed plate 102 arranged opposite to each other. The end face of the movable plate 101 facing away from the fixed plate 102 is provided with a mold closing component 103 that drives it to move toward the fixed plate 102. After the movable plate 101 and the fixed plate 102 are closed, a vacuum chamber is formed. The fixed plate 102 is provided with a vacuuming hole 1021. The fixed plate 102 is provided with a bag clamping component 104 for clamping the packaging bag and a bag clamping component. The sealing assembly 105 for bag sealing has a bag support assembly 106 on the moving plate 101. The transfer assembly includes a crossbeam 107 erected between two vacuuming assemblies. The crossbeam 107 is equipped with a first drive mechanism 108 that drives the packaging bag to move between the two vacuum chambers. The first drive mechanism 108 is equipped with two second drive mechanisms 109 that transfer the packaging bag from the previous work station to the vacuuming station 10. The second drive mechanism 109 is equipped with a third drive mechanism 1010 that clamps the packaging bag and drives it to rise and fall.

[0041] The mold clamping assembly 103 includes a first guide rod and guide sleeve assembly 1031 disposed on the vertical surface outside the movable plate 101, a second guide rod and guide sleeve assembly 1032 disposed at the bottom of the movable plate 101, and a mold clamping cylinder 1033. The first guide rod and guide sleeve assembly 1031 is located at the upper part of the vertical surface, and the second guide rod and guide sleeve assembly 1032 is located at the bottom near another vacuum assembly. The first guide rod 10311 of the first guide rod and guide sleeve assembly 1031 and the second guide rod 10321 of the second guide rod and guide sleeve assembly 1032 both extend to connect with the fixed plate 102. The end of the first guide rod 10311 and the second guide rod 10321 away from the fixed plate 102 is provided with a synchronization plate 1034. The output end of the mold clamping cylinder 1033 is connected to the movable plate 101, and the mold clamping cylinder 1033 is fixed on the synchronization plate 1034.

[0042] A support assembly 1011 is provided between the two vacuuming components to support the first guide rod 10311 and the second guide rod 10321. The support assembly 1011 includes a vertical plate 10111 connected to the first guide rod 10311 and a guide rod seat 10112 connected to the second guide rod 10321. A horizontal plate 10113 is provided between the lower ends of the two vertical plates 10111. A triangular plate 10114 is provided between the horizontal plate 10113 and the vertical plate 10111 and is fixedly connected to both. A connecting plate 10115 is provided between the guide rod seat 10112 and the horizontal plate 10113 and is fixedly connected to both.

[0043] A guide member 1012 is provided on the side of the fixed plate 102 near the first drive mechanism 108. The guide member 1012 includes a first surface 10121 that is attached to and connected to the side of the fixed plate 102, a second surface 122 that is perpendicularly connected to the first surface 10121, and a third surface 123 that is connected to the second surface 122. The second surface 122 is parallel to the moving plate 101, and the third surface 123 is inclined to the side away from the moving plate 101. The first surface 10121, the second surface 122, and the third surface 123 are all bent.

[0044] The bag-supporting assembly 106 includes a bag-supporting cylinder 1061 fixedly installed at the bottom of the movable plate 101. The bag-supporting cylinder 1061 is arranged vertically, and its output end passes through the movable plate 101 and is mounted on a base plate 1062. The base plate 1062 is provided with a support plate 1063 that is in contact with its end face. An adjusting plate 1064 is fixedly connected to the bottom of the support plate 1063. The adjusting plate 1064 is provided with at least one adjusting groove 10641 distributed vertically. The side of the base plate 1062 that is in contact with the adjusting plate 1064 is provided with a connecting hole 10621 corresponding to the adjusting groove 10641. Fasteners for connecting the adjusting plate 1064 and the base plate 1062 are inserted into the adjusting groove 10641 and the connecting hole 10621.

[0045] A guide plate 1065 is installed on the inner wall of the movable plate 101 in a vertical direction. Guide strips 1066 are provided at both ends of the bottom plate 1062 in the width direction. Guide grooves 10651 adapted to the ends of the guide strips 1066 are provided on the guide plate 1065.

[0046] The sealing assembly 105 includes a sealing cylinder 1051 fixedly mounted on a fixed plate 102. The output end of the sealing cylinder 1051 passes through the fixed plate 102 in a horizontal direction and is connected to a transition block 1052. A heat sealing strip 1053 is connected to one side of the transition block 1052 facing the moving plate 101. A pad 1054 adapted to the heat sealing strip 1053 is provided inside the moving plate 101.

[0047] The bag clamping assembly 104 includes a bag clamping cylinder 1041 fixedly mounted on a fixed plate 102. The output end of the bag clamping cylinder 1041 passes through the fixed plate 102 in a horizontal direction and is connected to a first connecting rod 1042. The end of the first connecting rod 1042 away from the bag clamping cylinder 1041 is hinged to a first swing arm 1043 arranged in a vertical direction. The end of the first swing arm 1043 away from the first connecting rod 1042 is connected to a bag clamping plate 1044 arranged in a horizontal direction. The bag clamping plate 1044 is parallel to the bag opening of the packaging bag. A guide block 1045 is provided in the fixed plate 102. The first swing arm 1043 passes through the guide block 1045 and is hinged to the guide block 1045. The bag clamping plate 1044 is provided with an insertion groove 10441. An anti-collision strip 1046 fixedly connected to the bag clamping plate 1044 is inserted into the insertion groove 10441. An anti-collision block 1055 adapted to the anti-collision strip 1046 is provided at the bottom of the transition block 1052.

[0048] The first drive mechanism 108 is a first electric slide, and a mounting base 1081 is connected to the moving slider of the first electric slide. The second drive mechanism 109 is mounted on the mounting base 1081 and is a second electric slide. The third drive mechanism 1010 includes two first lifting cylinders 10101 mounted on the sealing plate of the second electric slide and a finger cylinder 10102 mounted on the output end of the first lifting cylinder 10101. The clamping end of the finger cylinder 10102 is equipped with two clamping plates 10103 for clamping packaging bags.

[0049] Two third columns 1013 are provided below the crossbeam 107. The third columns 1013 are located between the two movable plates 101. A support seat 1014 is sleeved on the third column 1013. A baffle 1015 is installed on the support seat 1014. The baffle 1015 includes a plate base 10151 connected to the end face of the support seat 1014 and a vertically arranged plate body 10152. The plate base 10151 and the plate body 10152 are fixedly connected. The plate base 10151 is provided with at least one waist-shaped groove 101511. The support seat 1014 is provided with a connecting hole 10621 that matches the waist-shaped groove 101511.

[0050] The material unloading station 5 includes a hopper 51, which includes a hopper section 511 and a cylindrical section 512 located below the hopper section 511. A collecting cylinder 52 is provided outside the cylindrical section 512. The inner diameter of the collecting cylinder 52 is larger than the outer diameter of the cylindrical section 512. The bottom of the collecting cylinder 52 is located below the cylindrical section 512. An annular groove 521 is provided at the bottom of the collecting cylinder 52. The inner diameter of the annular groove 521 is equal to the inner diameter of the cylindrical section 512. A flared mouth 5121 inclined inward toward the annular groove 521 is provided at the bottom of the cylindrical section 512. At least one vacuum tube 522 is provided at the upper part of the collecting cylinder 52. The opening of the vacuum tube 522 is connected to the cylindrical wall of the collecting cylinder 52. A bag-supporting assembly 53 for opening the bag opening is provided outside the collecting cylinder 52. A first lifting assembly 54 for driving the hopper 51 to rise and fall is provided outside the hopper 51.

[0051] The bag support assembly 53 includes an installation cylinder 531 sleeved outside the collection cylinder 52, a first arc-shaped support plate 532 and a second arc-shaped support plate 533 surrounding the outer periphery of the installation cylinder 531. A first hinge seat 5311 and a second hinge seat 5312 are symmetrically arranged on the outer periphery of the installation cylinder 531. The first hinge seat 5311 is hinged to the first arc-shaped support plate 532, and the second hinge seat 5312 is hinged to the second arc-shaped support plate 533. The first hinge seat 5311 and the second hinge seat 5312... 12 is connected to a first U-shaped arm 534 and a second U-shaped arm 535 respectively. The two ends of the first U-shaped arm 534 are placed outside the second U-shaped arm 535, and the ends of the two are attached to each other and hinged. A bag-supporting cylinder 536 is provided outside the first hinge seat 5311 in a vertical direction. The output end of the bag-supporting cylinder 536 is set downward and hinged to a swing arm 537. The end of the swing arm 537 that is not connected to the bag-supporting cylinder 536 is connected to the first arc-shaped support plate 532 and the first U-shaped arm 534.

[0052] The mounting cylinder 531 is externally equipped with a second lifting assembly 55 that drives its lifting and lowering. The second lifting assembly 55 includes a pull rod 551 connected to an external drive source and a linkage arm 552 located at the upper end of the pull rod 551. The linkage arm 552 is connected to the mounting cylinder 531. A first column 553 is sleeved on the pull rod 551 and fixed on the frame 1. A first mounting plate 554 is provided on the first column 553. A second mounting plate 555 is sleeved on the pull rod 551 and is located above the first mounting plate 554. A guide rod 556 is provided between the first mounting plate 554 and the second mounting plate 555. A guide sleeve 557 adapted to the guide rod 556 is embedded on the second mounting plate 555. The lifting and lowering of the pull rod drives the linkage arm to lift and lower, and the lifting and lowering of the linkage arm drives the bag support assembly to lift and lower. The lifting and lowering of the pull rod simultaneously drives the second mounting plate to lift and lower along the guide rod. The end of the guide rod is fixedly connected to the first mounting plate. By setting the guide rod, the lifting and lowering trajectory of the pull rod is limited, so that it remains vertical and does not deviate.

[0053] Both the first arc-shaped support plate 532 and the second arc-shaped support plate 533 have an arc-shaped strip 5321 at their upper ends. The outer circumferential surface of the arc-shaped strip 5321 is provided with a hinge block 5322, which is hinged to the first hinge seat 5311 and the second hinge seat 5312 respectively.

[0054] An oil receiving assembly 56 is installed on the first column 553. The oil receiving assembly 56 includes a third mounting plate 561 installed on the first column 553 and a support 562 fixed to the end of the third mounting plate 561 away from the first column 553. An oil receiving cylinder 563 is installed on the support 562. An oil receiving tray 564 is connected to the output end of the oil receiving cylinder 563. The oil receiving tray 564 is located below the hopper 51 and is driven to move closer to or away from the hopper 51 by the oil receiving cylinder 563.

[0055] The first lifting assembly 54 includes a second lifting cylinder 541, a connector 542, and a second column 543. An annular boss 513 is provided at the connection between the cylinder 512 and the bucket 511. The connector 542 is integrally formed with the upper end of the collecting cylinder 52 and includes an arc-shaped boss 5421 connected to the annular boss 513 and a connecting plate 5422 located at the notch of the arc-shaped boss 5421. The connecting plate 5422 extends outward from the collecting cylinder 52 to connect with the output end of the second lifting cylinder 541. The end of the second column 543 is provided with a cylinder seat 544 connected to the second lifting cylinder 541. The second column 543 is fixed on the frame 1.

[0056] The packaging bag is sent from the bag feeding station to the bag clamping assembly. The two sides of the packaging bag are clamped by the bag clamping assembly. As the turntable rotates, it passes through the zipper opening station b, the bag opening station 4, the material unloading station 5, the bag mouth cleaning station 9, and the transfer station 6 in sequence. Then, the packaging bag is taken away by the vacuum station for vacuuming and heat sealing. After the vacuuming and heat sealing are completed, it falls into the conveying station and is sent out of the equipment.

[0057] At the material feeding station, material is poured into the hopper and filled into the packaging bag along the cylinder. Before filling, the pull rod is driven down together with the bag supporting assembly, so that the first and second arc-shaped support plates are inserted into the bag opening. At this time, the bag opening is already partially opened by the bag supporting assembly to accommodate the insertion of the first and second arc-shaped support plates. Then, the bag supporting cylinder is driven to open the first and second arc-shaped support plates, widening the bag opening. Then, the second lifting cylinder is driven to lower the collecting cylinder together with the hopper and insert it into the packaging bag to fill the bag with material. The juice in the material drips into the annular groove of the collecting cylinder along the flared opening of the cylinder. A vacuuming device is installed on the vacuum tube to suck away the juice collected in the annular groove. If the vacuum cannot completely remove the juice in the annular groove, the oil receiving cylinder pushes out the oil receiving tray, which catches the juice overflowing from the annular groove to prevent the juice from dripping into the bag opening. After the material filling is completed, all components are reset.

[0058] At the vacuuming station, the second drive mechanism moves horizontally and longitudinally closer to the previous station. The clamping plate in the third drive mechanism holds the packaging bag, which then moves horizontally and longitudinally to a position between the two vacuuming components. The first drive mechanism then delivers the packaging bag into one of the vacuuming components. Guided by the guide component, the packaging bag is precisely delivered between the moving plate and the fixed plate. The mold closing component drives the moving plate to move closer to the fixed plate. During this process, the bottom of the packaging bag is supported by the support plate of the bag supporting component, and the top of the packaging bag is clamped by the clamping plate of the bag clamping component. The third drive mechanism rises, and the fixed plate and the moving plate close to form a vacuum chamber. The vacuuming tool extracts air from the vacuuming hole. After the packaging bag is vacuumed, the heat sealing strip of the sealing component extends and fits against the pad to heat seal the opening of the packaging bag. After heat sealing, the mold closing component drives the moving plate to separate from the fixed plate, and the packaging bag falls onto the conveyor belt set below the vacuuming component and leaves the equipment.

Claims

1. A bag-type double vacuum packaging machine, comprising a turntable, with a bag-loading station, a bag-opening station, a material-discharging station, and a conveying station arranged sequentially along the outer circumference of the turntable; a bag-supporting component that reciprocates is provided between the bag-opening station and the material-discharging station; a vacuum-evacuating station is provided on one side of the conveying station; and a conveying station for conveying finished products is provided below the vacuum-evacuating station, characterized in that: The vacuuming station is equipped with two vacuuming components arranged side by side and a transfer component for conveying packaging bags. The vacuuming components include a movable plate and a fixed plate arranged opposite each other. The movable plate has a mold closing component on its side facing away from the fixed plate, which drives it to move toward the fixed plate. After the movable plate and the fixed plate are closed, a vacuum chamber is formed. The movable plate has a vacuuming hole. The fixed plate has a bag clamping component for clamping the packaging bag and a sealing component for sealing the packaging bag. The movable plate has a bag supporting component. The transfer component includes a crossbeam erected between the two vacuuming components. The crossbeam has a first drive mechanism for driving the packaging bag to move between the two vacuum chambers. The first drive mechanism has two second drive mechanisms for transferring the packaging bag from the previous workstation to the vacuuming station. The second drive mechanism has a third drive mechanism for clamping the packaging bag and driving it to rise and fall.

2. The bag-type double vacuum packaging machine according to claim 1, characterized in that: The mold clamping assembly includes a first guide rod and guide sleeve assembly disposed on the vertical surface outside the movable plate, a second guide rod and guide sleeve assembly disposed at the bottom of the movable plate, and a mold clamping cylinder. The first guide rod and guide sleeve assembly is located at the upper part of the vertical surface, and the second guide rod and guide sleeve assembly is located at the bottom on the side close to another vacuum assembly. The first guide rod of the first guide rod and guide sleeve assembly and the second guide rod of the second guide rod and guide sleeve assembly both extend to connect with the fixed plate. The ends of the first guide rod and the second guide rod away from the fixed plate are provided with a synchronization plate. The output end of the mold clamping cylinder is connected to the movable plate, and the mold clamping cylinder is fixed on the synchronization plate.

3. The bag-type double vacuum packaging machine according to claim 1, characterized in that: The fixed plate has a guide member on the side near the first driving mechanism. The guide member includes a first surface that is attached to and connected to the side of the fixed plate, a second surface that is perpendicularly connected to the first surface, and a third surface that is connected to the second surface. The second surface is parallel to the moving plate, and the third surface is inclined to the side away from the moving plate. The first surface, the second surface, and the third surface are all bent.

4. The bag-type double vacuum packaging machine according to claim 1, characterized in that: The bag-supporting assembly includes a bag-supporting cylinder fixedly installed at the bottom of a movable plate. The bag-supporting cylinder is arranged vertically, and its output end passes through the movable plate and is mounted on a base plate. The base plate is provided with a support plate that is in contact with its end face. An adjusting plate is fixedly connected to the bottom of the support plate. The adjusting plate is provided with at least one adjusting groove distributed in the vertical direction. The side of the base plate that is in contact with the adjusting plate is provided with a connecting hole corresponding to the adjusting groove. Fasteners for connecting the adjusting plate and the base plate are inserted into the adjusting groove and the connecting hole.

5. A pre-packed bag double vacuum packaging machine according to claim 1, characterized in that: The sealing assembly includes a sealing cylinder fixedly mounted on a fixed plate. The output end of the sealing cylinder passes through the fixed plate in a horizontal direction and is connected to a transition block. A heat sealing strip is connected to one side of the transition block facing the moving plate. A pad adapted to the heat sealing strip is provided inside the moving plate.

6. A pre-packed bag double vacuum packaging machine according to claim 5, characterized in that: The bag clamping assembly includes a bag clamping cylinder fixedly mounted on a fixed plate. The output end of the bag clamping cylinder passes through the fixed plate in a horizontal direction and is connected to a first connecting rod. The end of the first connecting rod away from the bag clamping cylinder is hinged to a first swing arm arranged in a vertical direction. The end of the first swing arm away from the first connecting rod is connected to a bag clamping plate arranged in a horizontal direction. The bag clamping plate is parallel to the opening of the packaging bag. A guide block is provided in the fixed plate. The first swing arm passes through the guide block and is hinged to the guide block. An insertion groove is provided on the bag clamping plate. An anti-collision strip fixedly connected to the bag clamping plate is inserted in the insertion groove. An anti-collision block adapted to the anti-collision strip is provided at the bottom of the transition block.

7. A pre-packed bag double vacuum packaging machine according to any one of claims 1-6, characterized in that: The material feeding station includes a hopper, which includes a hopper section and a cylindrical section located below the hopper section. A collecting cylinder is fitted over the cylindrical section, and the inner diameter of the collecting cylinder is larger than the outer diameter of the cylindrical section. The bottom of the collecting cylinder is located below the cylindrical section, and the bottom of the collecting cylinder has an annular groove with an inner diameter equal to that of the cylindrical section. The bottom of the cylindrical section has a flared opening that slopes inward toward the annular groove. At least one vacuum tube is provided on the upper part of the collecting cylinder, and the opening of the vacuum tube communicates with the cylinder wall of the collecting cylinder. A bag-supporting assembly for opening the bag opening is provided outside the collecting cylinder, and a first lifting assembly for driving the hopper to rise and fall is provided outside the hopper.

8. A pre-packed bag double vacuum packaging machine according to claim 7, characterized in that: The bag-supporting assembly includes an installation cylinder sleeved outside the collection cylinder, a first arc-shaped support plate and a second arc-shaped support plate surrounding the outer circumference of the installation cylinder. A first hinge seat and a second hinge seat are symmetrically arranged on the outer circumference of the installation cylinder. The first hinge seat is hinged to the first arc-shaped support plate, and the second hinge seat is hinged to the second arc-shaped support plate. A first and a second U-shaped arm are respectively connected to the outside of the first and second hinge seats. The two ends of the first U-shaped arm are placed outside the second U-shaped arm, and their ends are attached to each other and hinged. A bag-supporting cylinder is provided outside the first hinge seat in a vertical direction. The output end of the bag-supporting cylinder is set downward and hinged to a swing arm. The end of the swing arm that is not connected to the bag-supporting cylinder is connected to the first arc-shaped support plate and the first U-shaped arm.

9. A pre-packed bag double vacuum packaging machine according to claim 8, characterized in that: The mounting cylinder is provided with a second lifting assembly for driving its lifting and lowering. The second lifting assembly includes a pull rod connected to an external drive source and a linkage arm disposed at the upper end of the pull rod. The linkage arm is connected to the mounting cylinder. A first column is disposed outside the pull rod. A first mounting plate is disposed on the first column. A second mounting plate is disposed on the pull rod. The second mounting plate is located above the first mounting plate. A guide rod is disposed between the first mounting plate and the second mounting plate. A guide sleeve adapted to the guide rod is embedded on the second mounting plate.

10. A pre-packed bag double vacuum packaging machine according to claim 9, characterized in that: An oil receiving assembly is installed on the first column. The oil receiving assembly includes a third mounting plate installed on the column and a support fixed to the end of the third mounting plate away from the column. An oil receiving cylinder is installed on the support. An oil receiving plate is connected to the output end of the oil receiving cylinder. The oil receiving plate is located below the hopper and is driven to move closer to or away from the hopper by the oil receiving cylinder.

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