Blanking mechanism of bag feeding type packaging machine

Abstract

The utility model relates to the technical field of packaging machines, in particular to a blanking mechanism of a bag feeding type packaging machine, which comprises a hopper, the hopper comprises a hopper part and a barrel part positioned below the hopper part, a collecting barrel is sleeved outside the barrel part, the inner diameter of the collecting barrel is larger than the outer diameter of the barrel part, the bottom of the collecting barrel is positioned below the barrel part, and an annular groove is arranged at the bottom of the collecting barrel. The inner diameter of the annular groove is equal to the inner diameter of the barrel part, a horn mouth inclining towards the interior of the annular groove is formed in the bottom of the barrel part, at least one vacuumizing pipe is arranged on the upper portion of the collecting barrel, a pipe opening of the vacuumizing pipe is communicated with the barrel wall of the collecting barrel, and a bag opening assembly for opening a bag opening of a packaging bag is arranged outside the collecting barrel. The utility model has the beneficial effect of being suitable for filling materials with juice.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, specifically to a material feeding mechanism for a bag-type packaging machine. Background Technology

[0002] Pre-packaging machines, as automated packaging equipment, are widely used in material packaging in various fields such as food, pharmaceuticals, and daily chemicals. Pre-packaging machines are generally equipped with a turntable, and along the outer perimeter of the turntable are sequentially arranged a bag loading station, a bag opening station, a material unloading station, a heat sealing station, a shaping station, and an output station, among which the material unloading station is the core station of the pre-packaging machine.

[0003] The invention patent with patent number CN104743157B discloses a feeding device for block materials in a bag packaging machine. At the feeding station, a hopper component is provided at the bottom of the hopper. The hopper component includes an inner hopper and an outer hopper. The outer hopper has upper and lower openings. Left and right bag support plates are provided on the outer side of the lower opening of the outer hopper. The left and right bag support plates are hinged to the outer hopper and can swing left and right. After the left and right bag support plates swing outward, they are reset by springs. The inner hopper is movably located in the inner cavity of the outer hopper and is pushed by a cylinder. During the feeding operation, the lower opening of the inner hopper extends outward and is inserted into the packaging bag.

[0004] The aforementioned hopper component has a structure that can fully open the bag opening to resemble the shape of the material being fed, making it suitable for automatic feeding of large, blocky materials such as dried tofu and fish cakes. However, this hopper component has the following drawbacks: 1. The document does not disclose the driving source for the outward swing of the left and right bag support plates, nor does it specify the driving structure for opening the left and right bag support plates; 2. The left and right bag support plates are reset by springs, which may result in over-reset or incomplete reset. Over-reset can cause the left and right bag support plates to collide with each other, while incomplete reset can prevent the bag support plates from effectively pre-opening the bag opening; 3. Pickled materials such as kimchi contain a lot of juice, which will stick to the inner wall of the lower opening of the inner hopper during filling. This juice will accumulate and drip onto the worktable of the equipment, affecting workshop hygiene, and will also stick to the bag opening, affecting the heat sealing of the bag opening. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a material feeding mechanism for a bag packaging machine that is suitable for filling materials containing juice, in order to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a material feeding mechanism for a bag packaging machine, comprising a hopper, the hopper including a hopper section and a cylindrical section located below the hopper section, a collecting cylinder being fitted over the cylindrical section, the inner diameter of the collecting cylinder being larger than the outer diameter of the cylindrical section, the bottom of the collecting cylinder being located below the cylindrical section, the bottom of the collecting cylinder having an annular groove having an inner diameter equal to the inner diameter of the cylindrical section, the bottom of the cylindrical section having a flared opening inclined into the annular groove, the upper part of the collecting cylinder having at least one vacuum tube having a tube opening communicating with the cylindrical wall of the collecting cylinder, a bag-supporting assembly for opening the bag opening being provided outside the collecting cylinder, and a first lifting assembly for driving the hopper to rise and fall being provided outside the hopper.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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 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.

[0011] 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.

[0012] A further feature of this invention is that: both the upper ends of the first arc-shaped support plate and the second arc-shaped support plate are provided with arc-shaped strips, and the outer circumferential surface of the arc-shaped strips is provided with hinge blocks, which are respectively hinged to the first hinge seat and the second hinge seat.

[0013] The present invention, which has the above-mentioned features, has the following characteristics: the setting of the arc-shaped strip increases the rigidity of the arc-shaped support plate and avoids deformation of the arc-shaped support plate caused by high-frequency opening action.

[0014] A further feature of this invention is that an oil receiving assembly is installed on the first column. The oil receiving assembly includes a third mounting plate installed on the first column and a support fixed to the end of the third mounting plate away from the first column. An oil receiving cylinder is installed on the support, and an oil receiving tray is connected to the output end of the oil receiving cylinder. The oil receiving tray is located below the hopper and is driven to move closer to or away from the hopper by the oil receiving cylinder.

[0015] 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.

[0016] A further feature of this invention is that the first lifting assembly includes a lifting cylinder and a connecting member. An annular boss is provided at the connection between the cylindrical section and the bucket section. The connecting member is integrally formed with the upper opening of the collecting cylinder and includes an arc-shaped boss connected to the annular boss and a connecting plate located at the notch of the arc-shaped boss. The connecting plate extends outward from the collecting cylinder to connect with the output end of the lifting cylinder.

[0017] The present invention, which has the above features, uses a lifting cylinder as the power source for the first lifting component to ensure that the depth of the hopper cylinder is inserted into the packaging bag each time, thereby improving the consistency of material falling; and by setting a connecting part, the collecting cylinder and the hopper descend together.

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 2 This is a cross-sectional view of an embodiment of the present utility model.

[0021] Figure 3 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.

[0022] Figure 4 This is an exploded view of the hopper, collecting cylinder, and mounting cylinder of an embodiment of this utility model. Detailed Implementation

[0023] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0024] like Figure 1-4 The material feeding mechanism of a bag packaging machine shown includes a hopper 51, which includes a hopper portion 511 and a cylindrical portion 512 located below the hopper portion 511. A collecting cylinder 52 is provided outside the cylindrical portion 512. The inner diameter of the collecting cylinder 52 is larger than the outer diameter of the cylindrical portion 512. The bottom of the collecting cylinder 52 is located below the cylindrical portion 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 portion 512. A flared opening 5121 inclined inward toward the annular groove 521 is provided at the bottom of the cylindrical portion 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.

[0025] 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.

[0026] 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.

[0027] The mounting cylinder 531 is externally equipped with a second lifting assembly 55 for driving 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 disposed on 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. A first mounting plate 554 is disposed on the first column 553. A second mounting plate 555 is sleeved on the pull rod 551. The second mounting plate 555 is located above the first mounting plate 554. A guide rod 556 is disposed 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. 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.

[0028] 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.

[0029] The first lifting assembly 54 includes a 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 lifting cylinder 541. The end of the second column 543 is provided with a cylinder seat 544 connected to the lifting cylinder 541.

[0030] Material is poured into the hopper and fed into the packaging bag along the cylinder. Before filling, the pull rod is driven down together with the bag support assembly to insert the first and second arc-shaped support plates into the bag opening. Then, the bag support cylinder is driven to open the first and second arc-shaped support plates, widening the bag opening. Next, the 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 vacuum 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 to catch the juice overflowing from the annular groove, preventing the juice from dripping into the bag opening. After the material is filled, all components are reset.

Claims

1. A material feeding mechanism for a bag packaging machine, comprising a hopper, characterized in that: The hopper includes a hopper section and a cylindrical section located below the hopper section. A collecting cylinder is fitted over the cylindrical section. 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 has an annular groove with an inner diameter equal to the inner diameter 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. The opening of the vacuum tube is connected to the cylinder wall of the collecting cylinder. A bag-supporting assembly for opening the bag opening is provided outside the collecting cylinder. A first lifting assembly for driving the hopper to rise and fall is provided outside the hopper.

2. The material feeding mechanism of a bag packaging machine according to claim 1, 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.

3. The material feeding mechanism of a bag packaging machine according to claim 2, 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.

4. The material feeding mechanism of a bag packaging machine according to claim 2, characterized in that: Both the first and second arc-shaped support plates have arc-shaped strips at their upper ends, and the outer circumferential surfaces of the arc-shaped strips are provided with hinge blocks, which are respectively hinged to the first hinge seat and the second hinge seat.

5. The material feeding mechanism of a bag packaging machine according to claim 3, 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 first column and a support fixed to the end of the third mounting plate away from the first 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.

6. The material feeding mechanism of a bag packaging machine according to any one of claims 1-5, characterized in that: The first lifting assembly includes a lifting cylinder and a connecting piece. An annular boss is provided at the connection between the cylinder and the bucket. The connecting piece is integrally formed with the upper end of the collecting cylinder and includes an arc-shaped boss connected to the annular boss and a connecting plate located at the notch of the arc-shaped boss. The connecting plate extends outward from the collecting cylinder to connect with the output end of the lifting cylinder.

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