A device for vacuum packaging of three-dimensional plastic bags

Abstract

The application discloses a kind of three-dimensional plastic bag vacuum packaging equipment, including bag top lift feed mechanism, bag transfer mechanism, product feed line, push mechanism, the movable part of bag transfer mechanism can reciprocate between bag top lift feed mechanism and product feed line, the movable part of bag transfer mechanism is equipped with suction cup, product feed line one end is equipped with transfer platform, transfer platform is located in U-shaped movable frame, four product clamping air cylinders are equipped on U-shaped movable frame, and L-shaped clamping block is equipped on each product clamping air cylinder.Plastic bag is opened, four L-shaped clamping blocks hold four edges of product, movable frame moves forward, four L-shaped clamping blocks and product are inserted into plastic bag, and push mechanism pushes product into plastic bag.The application uses four L-shaped clamping blocks to guide product into plastic bag, avoid product and plastic bag rubbing contact and damage plastic bag mouth, facilitate product to be smoothly loaded into plastic bag.

Description

TECHNICAL FIELD

[0001] The present application relates to product packaging technology, in particular to the equipment for packaging products in plastic bags. BACKGROUND

[0002] The product is put into the plastic bag, and the plastic bag is sealed, which is completed on the automatic equipment, and the plastic bag opening device and the product pushing device are required. The plastic bag opening device can adopt the upper row of suction cups and the lower row of suction cups, the upper row of suction cups adsorbs the upper edge of the opening of the plastic bag, the lower row of suction cups adsorbs the lower edge of the opening of the plastic bag, the upper row of suction cups is away from the lower row of suction cups, and the opening of the plastic bag is opened. The product pushing device includes a linear driving unit and a pushing block, the linear driving unit drives the pushing block, and the pushing block pushes the product into the plastic bag. Then, the plastic sealing device seals the plastic bag.

[0003] In the process of pushing the product into the plastic bag, the bottom and side of the product are easy to rub and contact with the edge and inner side of the opening of the plastic bag, and even the plastic bag can be adsorbed with the product under the action of static electricity, so that the product pushed forward can damage the opening of the plastic bag, deform the opening of the plastic bag, and displace the plastic bag, especially the friction between the bottom of the product and the lower part of the plastic bag. SUMMARY

[0004] The technical problem solved by the present application is that the product pushed forward can damage the opening of the plastic bag, deform the opening of the plastic bag, and displace the plastic bag, especially the friction between the bottom of the product and the lower part of the plastic bag, when the automatic equipment pushes the product into the plastic bag.

[0005] To solve the above technical problems, the present application provides the following technical scheme: a three-dimensional plastic bag vacuum packaging equipment, comprising a bag lifting feeding mechanism, a bag moving mechanism, a product feeding line, and a pushing mechanism, the movable part of the bag moving mechanism can reciprocate between the bag lifting feeding mechanism and the product feeding line, the movable part of the bag moving mechanism is provided with a suction cup, a low-position suction cup is arranged near the end of the product feeding line close to the bag moving mechanism, a transfer platform is arranged at the end of the product feeding line close to the bag moving mechanism, the transfer platform is located in a U-shaped movable frame, four product clamping air cylinders are arranged on a pair of vertical supports of the U-shaped movable frame, the four product clamping air cylinders are symmetrically arranged left and right, the four product clamping air cylinders are inclinedly arranged, the four product clamping air cylinders are directed to the center of the U-shaped movable frame, an L-shaped clamping block is arranged on each product clamping air cylinder, and the four L-shaped clamping blocks can clamp four edges of a cuboid product; the U-shaped movable frame is connected with a movable frame displacement air cylinder.

[0006] According to the technical scheme, a stack of plastic bags is placed on the lifting feeding mechanism, the bag moving mechanism adsorbs the uppermost plastic bag of the stack of plastic bags from the lifting feeding mechanism, and the lifting feeding mechanism is lifted by a height of a thickness of the plastic bag. The bag moving mechanism moves the plastic bag to the vicinity of the end of the product feeding line close to the bag moving mechanism, the bag moving mechanism drives the plastic bag to descend, the lower suction disc adsorbs the lower part of the opening of the plastic bag, the bag moving mechanism drives the plastic bag to ascend, and the opening of the plastic bag is opened. The product feeding line transports the product to the plastic bag, the product moves to the transfer platform, the transfer platform is narrower than the width of the product. Four product clamping air cylinders act, four L-shaped clamping blocks are displaced to the center of the product, are clamped on four edges of the product, and the product is lifted to separate from the transfer platform. Then, the four L-shaped clamping blocks and the product are inserted into the plastic bag under the driving of the movable frame displacement air cylinder. Then, the pushing mechanism acts to push the product into the plastic bag, and the product continues to penetrate into the plastic bag along the four L-shaped clamping blocks. The movable frame displacement air cylinder resets, the four L-shaped clamping blocks exit the plastic bag, and the pushing mechanism resets.

[0007] The four L-shaped clamping blocks guide the product into the plastic bag, avoid the product from rubbing and contacting the plastic bag to damage the opening of the plastic bag, deform the opening of the plastic bag, and displace the plastic bag, and facilitate the product to be smoothly loaded into the plastic bag.

[0008] The pushing mechanism includes a pushing linear driving unit, a pushing movable frame connected with the movable part of the pushing linear driving unit, a pushing lifting cylinder arranged on the pushing movable frame, a pushing lifting seat connected with the pushing lifting cylinder, and a pushing plate connected with the pushing lifting seat. The displacement direction of the movable part of the pushing linear driving unit is parallel to the displacement direction of the product on the product feeding line. The pushing lifting cylinder drives the pushing plate to ascend to avoid the product on the product feeding line, drives the pushing plate to descend to make the pushing plate located behind the product, and prepares for the subsequent pushing plate to push the product into the plastic bag. Under the driving of the pushing linear driving unit, the pushing plate pushes the product into the plastic bag.

[0009] The product feeding line includes a product feeding line, a product transfer line, and a product discharging line. The product discharging line is parallel to the product feeding line, the product transfer line is connected with a product transfer horizontal displacement air cylinder, and under the driving of the product transfer horizontal displacement air cylinder, the product transfer line can be switched between the product feeding line and the product discharging line. The qualified product is displaced along the product feeding line and the product transfer line to the transfer platform. The unqualified product is displaced to the product transfer line, under the driving of the product transfer horizontal displacement air cylinder, the product transfer line is displaced to the product discharging line, the product transfer line reversely drives the product to the product discharging line, and the product discharging line drives the product to exit the device.

[0010] The bag moving mechanism comprises a bag moving linear drive unit, a bag moving support connected with the bag moving linear drive unit, a bag moving lifting cylinder arranged on the bag moving support, a suction disc holder connected with the bag moving lifting cylinder, and a suction disc arranged on the suction disc holder. The suction disc is used to adsorb the plastic bag from the bag lifting feeding mechanism. Under the driving of the bag moving linear drive unit, the plastic bag is displaced to the product feeding line. Under the driving of the bag moving lifting cylinder, the plastic bag is lowered. After the lower part of the plastic bag opening is adsorbed by the lower suction disc, the plastic bag opening is opened.

[0011] A finished product conveying line is arranged between the bag lifting feeding mechanism and the product feeding line, and is perpendicular to the product feeding line. The pushing mechanism can push the product and the plastic bag to the finished product conveying line. A vacuum plastic sealing mechanism and a labeling mechanism are arranged beside the finished product conveying line. The pushing plate of the pushing mechanism pushes the product into the plastic bag, and continues to push the plastic bag and the product to the finished product conveying line. The finished product conveying line conveys the plastic bag and the product to the vacuum plastic sealing mechanism and the labeling mechanism. The vacuum plastic sealing mechanism seals the plastic bag after vacuumizing the plastic bag. The labeling mechanism labels the plastic bag.

[0012] The vacuum plastic sealing mechanism comprises a pair of bag folding mechanisms and a vacuumizing flat pipe arranged between the pair of bag folding mechanisms. The bag folding mechanism comprises a bag folding horizontal transverse cylinder, a bag folding first support arranged on the bag folding horizontal transverse cylinder, a folding horizontal longitudinal first cylinder arranged on the bag folding first support, a bag folding second support arranged on the bag folding first support, a folding horizontal longitudinal second cylinder arranged on the bag folding second support, a folding vertical plate connected with the folding horizontal longitudinal first cylinder, a folding first lifting cylinder and a folding second lifting cylinder arranged on the folding vertical plate, a first folding plate connected with the folding first lifting cylinder, a second folding plate connected with the folding second lifting cylinder, and a third folding plate connected with the folding horizontal longitudinal second cylinder. The vacuumizing flat pipe is connected with a vacuumizing cylinder.

[0013] A pair of bag folding mechanisms fold both sides of the plastic bag opening. Specifically, driven by a horizontal cylinder for bag folding, the first, second, and third folding plates approach the plastic bag opening. Driven by a horizontal vertical cylinder for folding, the first, second, and third folding plates move horizontally longitudinally, with the first and second folding plates positioned above and below one side of the plastic bag opening, and the third folding plate positioned beside the plastic bag opening. Driven by a horizontal vertical cylinder for folding, the third folding plate moves horizontally longitudinally, acting on the side of the plastic bag, causing the side of the plastic bag to be concave, resembling an M-shape. Then, driven by a vacuum cylinder, a vacuum tube is inserted into the plastic bag. Finally, driven by a first and second lifting cylinder for folding, the first and second folding plates move towards each other, closing the plastic bag opening. After the vacuum tube evacuates the plastic bag, it resets, the upper sealing strip descends, and the lower sealing strip rises, clamping the bag opening and sealing it. After the first, second, and third folding plates reset, the finished product conveyor line continues to transport the plastic bags and products. Attached Figure Description

[0014] The invention will be further described below with reference to the accompanying drawings:

[0015] Figure 1 A schematic diagram of equipment for vacuum packaging of three-dimensional plastic bags;

[0016] Figure 2 A top view of the equipment for vacuum packaging of three-dimensional plastic bags;

[0017] Figure 3 A schematic diagram of the bag transplanting mechanism 20;

[0018] Figure 4 This is a schematic diagram of the feeding mechanism 40;

[0019] Figure 5 A schematic diagram showing the transit platform 50 as viewed from the rear;

[0020] Figure 6 A schematic diagram showing the transfer platform 50 as viewed from the front;

[0021] Figure 7 for Figure 5 A schematic diagram showing products 90 placed on the transit platform 50.

[0022] Figure 8 for Figure 6 A schematic diagram showing products 90 placed on the transit platform 50.

[0023] Figure 9 A schematic diagram of the vacuum sealing mechanism 70;

[0024] Figure 10 Fig. 7 is a schematic view of the vacuum sealing mechanism 70 from another perspective;

[0025] Figure 11 Fig. 8 is a schematic view of the bag folding mechanism 71 from another perspective;

[0026] Figure 12 Fig. 9 is a schematic view of the bag folding mechanism 71 from another perspective.

[0027] Explanation of symbols in the figures:

[0028] 10, bag lifting feeding mechanism;

[0029] 20, bag moving mechanism; 21, linear drive unit for bag moving; 22, bracket for bag moving; 23, lifting cylinder for bag moving; 24, suction cup bracket; 25, suction cup;

[0030] 30, product feeding line; 31, product feeding line; 32, product transfer line; 33, product feeding line; 34, product transfer horizontal displacement cylinder;

[0031] 40, pushing mechanism; 41, linear drive unit for pushing; 42, movable bracket for pushing; 43, lifting cylinder for pushing; 44, lifting seat for pushing; 45, pushing plate;

[0032] 50, transfer platform; 51, U-shaped movable bracket; 511, cylinder for displacement of movable bracket; 52, cylinder for product clamping; 53, L-shaped clamping block;

[0033] 60, finished product conveying line;

[0034] 70, vacuum sealing mechanism; 71, bag folding mechanism; 711, horizontal transverse cylinder for bag folding; 712, first support for bag folding; 713, horizontal longitudinal first cylinder for folding; 714, second support for bag folding; 715, horizontal longitudinal second cylinder for folding; 716, vertical plate for folding; 717, first lifting cylinder for folding; 718, second lifting cylinder for folding; 719, first folding plate; 720, second folding plate; 721, third folding plate

[0035] 75, vacuum pumping flat tube; 751, cylinder for vacuum pumping; 76, upper sealing strip; 77, lower sealing strip;

[0036] 80, labeling mechanism;

[0037] 90, product. DETAILED DESCRIPTION

[0038] In combination Figure 1 , Figure 2 , Figures 5 to 8The utility model provides a kind of equipment of three-dimensional plastic bag vacuum packaging, including bag jacking feed mechanism 10, bag transfer mechanism 20, product feed line 30, push mechanism 40, the movable part of bag transfer mechanism can reciprocate between bag jacking feed mechanism and product feed line, the movable part of bag transfer mechanism is equipped with suction cup, low suction cup is equipped near the end of product feed line close to bag transfer mechanism, transfer platform 50 is equipped at the end of product feed line 30 close to bag transfer mechanism, transfer platform is located in U-shaped movable frame 51, four product clamping air cylinders 52 are equipped on a pair of vertical supports of U-shaped movable frame, four product clamping air cylinders are symmetrically arranged left and right, four product clamping air cylinders are obliquely arranged, four product clamping air cylinders are directed to the center of U-shaped movable frame, L-shaped clamping block 53 is equipped on each product clamping air cylinder, and four L-shaped clamping blocks can clamp four edges of cuboid product;U-shaped movable frame is connected with movable frame displacement air cylinder 511.

[0039] A stack of plastic bags is placed on jacking feed mechanism 10, and bag transfer mechanism 20 adsorbs the uppermost plastic bag of the stack of plastic bags from jacking feed mechanism 10, and jacking feed mechanism 10 rises by a height of the thickness of a plastic bag. Bag transfer mechanism 20 transfers the plastic bag to the end of product feed line 30 close to bag transfer mechanism 20, and bag transfer mechanism 20 drives the plastic bag to descend, and low suction cup adsorbs the lower part of the opening of the plastic bag, and bag transfer mechanism 20 drives the plastic bag to rise, and the opening of the plastic bag is opened. Product feed line 30 transports products in the direction of the plastic bag, and the products move to transfer platform 50, and the transfer platform is narrower than the width of the products. Four product clamping air cylinders 52 act, and four L-shaped clamping blocks 53 are displaced towards the center of the products, clamped on four edges of the products, and the products are lifted to separate from transfer platform 50. Then, under the drive of movable frame displacement air cylinder 511, four L-shaped clamping blocks 53 and products extend into the plastic bag. Then, push mechanism 40 acts, and pushes the products into the plastic bag, and the products continue to penetrate into the plastic bag along four L-shaped clamping blocks 53. Movable frame displacement air cylinder 511 resets, and four L-shaped clamping blocks 53 exit the plastic bag, and push mechanism 40 resets.

[0040] As Figure 4The pushing mechanism 40 comprises a pushing linear driving unit 41, a pushing movable frame 42 connected with the movable part of the pushing linear driving unit 41, a pushing lifting cylinder 43 arranged on the pushing movable frame 42, a pushing lifting seat 44 connected with the pushing lifting cylinder 43, and a pushing plate 45 connected with the pushing lifting seat 44. The displacement direction of the movable part of the pushing linear driving unit 41 is parallel to the displacement direction of the products on the product feeding line 30. The pushing lifting cylinder 43 drives the pushing plate 45 to rise to avoid the products on the product feeding line 30. The pushing lifting cylinder 43 drives the pushing plate 45 to descend, so that the pushing plate 45 is located behind the products, and prepares for the subsequent pushing plate to push the products into the plastic bag. Under the driving of the pushing linear driving unit 41, the pushing plate 45 pushes the products into the plastic bag.

[0041] In combination Figure 1 , Figure 2 The product feeding line 30 comprises a product feeding line 31, a product transfer line 32, and a product discharging line 33. The product discharging line is parallel to the product feeding line. The product transfer line is connected with a product transfer horizontal displacement cylinder 34. Under the driving of the product transfer horizontal displacement cylinder, the product transfer line can be switched between the product feeding line and the product discharging line. The qualified products are displaced along the product feeding line 31 and the product transfer line 32 to the transfer platform 50. The unqualified products are displaced to the product transfer line 32. Under the driving of the product transfer horizontal displacement cylinder 34, the product transfer line 32 is displaced to the product discharging line 33. The product transfer line 32 reversely drives the products to the product discharging line 33. The product discharging line 33 drives the products to exit the equipment.

[0042] As shown in Figure 3 The bag moving mechanism 20 comprises a bag moving linear driving unit 21, a bag moving support 22 connected with the bag moving linear driving unit 21, a bag moving lifting cylinder 23 arranged on the bag moving support 22, and a suction disc holder 24 connected with the bag moving lifting cylinder 23. Suction discs 25 are arranged on the suction disc holder 24. The suction discs 25 adsorb the plastic bags from the bag top lifting feeding mechanism 10. Under the driving of the bag moving linear driving unit 21, the plastic bags are displaced to the product feeding line 30. Under the driving of the bag moving lifting cylinder 23, the plastic bags are lowered. After the lower suction discs adsorb the lower part of the openings of the plastic bags, the plastic bags are opened

[0043] In combination Figure 1 , Figure 2The bag lifting feeding mechanism 10 and the product feeding line 30 are provided with a finished product conveying line 60, the finished product conveying line is perpendicular to the product feeding line, and the pushing mechanism 40 can push the product and the plastic bag to the finished product conveying line; the side of the finished product conveying line is provided with a vacuum plastic sealing mechanism 70 and a labeling mechanism 80. The pushing plate 45 of the pushing mechanism 40 pushes the product into the plastic bag, continues to push forward, and pushes the plastic bag and the product as a whole to the finished product conveying line 60. The finished product conveying line 60 conveys the plastic bag and the product to the vacuum plastic sealing mechanism 70 and the labeling mechanism 80, the vacuum plastic sealing mechanism 70 seals the plastic bag after vacuumizing the plastic bag, and the labeling mechanism 80 labels the plastic bag.

[0044] In combination Figures 9 to 12 The vacuum plastic sealing mechanism 70 comprises a pair of bag folding mechanisms 71 and a vacuumizing flat pipe 75 between the pair of bag folding mechanisms, the bag folding mechanism comprises a bag folding horizontal transverse cylinder 711, a bag folding first support 712 installed on the bag folding horizontal transverse cylinder, a folding horizontal longitudinal first cylinder 713 installed on the bag folding first support, a bag folding second support 714 installed on the bag folding first support, a folding horizontal longitudinal second cylinder 715 installed on the bag folding second support, a folding vertical plate 716 connected with the folding horizontal longitudinal first cylinder, a folding first lifting cylinder 717 and a folding second lifting cylinder 718 installed on the folding vertical plate, a first folding plate 719 connected with the folding first lifting cylinder, a second folding plate 720 connected with the folding second lifting cylinder, and a third folding plate 721 connected with the folding horizontal longitudinal second cylinder; the vacuumizing flat pipe 75 is connected with a vacuumizing cylinder 751.

[0045] A pair of bag folding mechanisms 71 fold the two sides of the plastic bag opening. Specifically, under the drive of the horizontal transverse cylinder 711 for bag folding, the first folding plate 719, the second folding plate 720 and the third folding plate 721 are closed to the plastic bag opening. Under the drive of the horizontal longitudinal first cylinder 713 for folding, the first folding plate 719, the second folding plate 720 and the third folding plate 721 are horizontally longitudinally displaced, the first folding plate 719 and the second folding plate 720 are above and below the side of the plastic bag opening, and the third folding plate 721 is beside the plastic bag opening. Under the drive of the horizontal longitudinal second cylinder 715 for folding, the third folding plate 721 is horizontally longitudinally displaced and acts on the side of the plastic bag to make the side of the plastic bag concave, which is similar to an M shape. Then, under the drive of the cylinder 751 for vacuumizing, the vacuumizing flat tube 75 is inserted into the plastic bag. Then, under the drive of the first lifting cylinder 717 for folding and the second lifting cylinder 718 for folding, the first folding plate 719 and the second folding plate 720 are closed to each other to make the plastic bag opening close. After the plastic bag is vacuumized by the vacuumizing flat tube 75, the vacuumizing flat tube 75 is reset, the upper plastic sealing strip 76 is lowered, the lower plastic sealing strip 77 is raised, the plastic bag opening is clamped and sealed. After the first folding plate 719, the second folding plate 720 and the third folding plate 721 are reset, the finished product conveying line 60 continues to convey the plastic bag and the product.

[0046] The above is only the preferred embodiment of the present application. Those skilled in the art can make changes in the specific embodiment and application range according to the idea of the present application. The content of the specification should not be understood as a limitation of the present application.

Claims

1. A three-dimensional plastic bag vacuum packaging device, comprising a bag lifting and feeding mechanism (10), a bag transfer mechanism (20), a product feeding line (30), and a pushing mechanism (40), wherein the movable part of the bag transfer mechanism is capable of reciprocating between the bag lifting and feeding mechanism and the product feeding line, the movable part of the bag transfer mechanism is provided with a suction cup, and a low-position suction cup is provided near one end of the product feeding line close to the bag transfer mechanism, characterized in that: A transfer platform (50) is provided at one end of the product feeding line (30) near the bag transfer mechanism. The transfer platform is located in the U-shaped movable frame (51). Four product clamping cylinders (52) are provided on a pair of vertical supports of the U-shaped movable frame. The four product clamping cylinders are symmetrically arranged on the left and right sides, and the four product clamping cylinders are inclined. The four product clamping cylinders point to the center of the U-shaped movable frame. Each product clamping cylinder is provided with an L-shaped clamping block (53). The four L-shaped clamping blocks can clamp the four edges of the cuboid product. The U-shaped movable frame is connected to the movable frame displacement cylinder (511). The four L-shaped clamps (53) move toward the center of the product and clamp the four edges of the product. The product is lifted and detached from the transfer platform (50). Driven by the movable frame displacement cylinder (511), the four L-shaped clamps (53) and the product extend into the plastic bag. The pushing mechanism (40) is activated to push the product into the plastic bag. The product continues to go deeper into the plastic bag along the four L-shaped clamps (53). The feeding mechanism (40) includes a linear drive unit (41) for feeding, a movable frame (42) for feeding connected to the movable part of the linear drive unit for feeding, a lifting cylinder (43) for feeding set on the movable frame for feeding, a lifting seat (44) for feeding connected to the lifting cylinder for feeding, and a push plate (45) connected to the lifting seat for feeding. The displacement direction of the movable part of the linear drive unit for feeding is parallel to the displacement direction of the product on the product feeding line (30). The product feeding line (30) includes a product loading line (31), a product transfer line (32), and a product unloading line (33). The product unloading line is parallel to the product loading line. The product transfer line is connected to a product transfer lateral displacement cylinder (34). Driven by the product transfer lateral displacement cylinder, the product transfer line can switch between the product loading line and the product unloading line.

2. The equipment for vacuum packaging of three-dimensional plastic bags as described in claim 1, characterized in that: The bag transfer mechanism (20) includes a linear drive unit (21) for bag transfer, a bag transfer bracket (22) connected to the linear drive unit for bag transfer, a lifting cylinder (23) for bag transfer set on the bag transfer bracket, and a suction cup frame (24) connected to the lifting cylinder for bag transfer. The suction cup (25) is set on the suction cup frame.

3. The equipment for vacuum packaging of three-dimensional plastic bags as described in claim 1, characterized in that: A finished product conveyor line (60) is provided between the bag lifting and feeding mechanism (10) and the product feeding line (30). The finished product conveyor line is perpendicular to the product feeding line. The pushing mechanism (40) can push the product and the plastic bag together to the finished product conveyor line. A vacuum sealing mechanism (70) and a labeling mechanism (80) are provided on the side of the finished product conveyor line.

4. The equipment for vacuum packaging of three-dimensional plastic bags as described in claim 3, characterized in that: The vacuum sealing mechanism (70) includes a pair of bag folding mechanisms (71) and a vacuum tube (75) located between the pair of bag folding mechanisms. The bag folding mechanism includes a horizontal transverse cylinder (711) for bag folding, a first support (712) for bag folding mounted on the horizontal transverse cylinder for bag folding, a horizontal longitudinal first cylinder (713) for folding mounted on the first support for bag folding, a second support (714) for bag folding mounted on the first support for bag folding, and a folding mechanism mounted on the second support for bag folding. The system consists of a horizontal longitudinal second cylinder (715), a folding upright plate (716) connected to a horizontal longitudinal first cylinder for folding, a first lifting cylinder (717) and a second lifting cylinder (718) for folding mounted on the folding upright plate, a first folding plate (719) connected to the first lifting cylinder for folding, a second folding plate (720) connected to the second lifting cylinder for folding, and a third folding plate (721) connected to the horizontal longitudinal second cylinder for folding; the vacuum tube (75) is connected to the vacuum cylinder (751).

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