Bag opening mechanism of packaging machine

Abstract

The utility model discloses a bag opening mechanism of a packaging machine. The bag opening mechanism comprises a feeding mechanism, wherein a feeding frame is arranged on the feeding mechanism; the pair of bag opening nozzles is arranged on the feeding frame, and the bag opening nozzles are configured to be capable of rotating; the bag opening driving assembly is arranged on the feeding frame, the bag opening driving assembly drives the bag opening nozzle to move along a preset path, the bag opening nozzle extends in the second direction, the bag opening driving assembly drives the bag opening nozzle to be obliquely inserted into a bag opening of a packaging bag along the preset path, and the included angle between the preset path and the second direction is alpha. The bag opening driving assembly drives the bag opening nozzle to be obliquely inserted into the bag opening of the packaging bag along the preset path, after the bag opening nozzle is inserted into the packaging bag, the bag opening nozzle is sufficiently attached to the lower layer of the packaging bag but does not make contact with the lower layer, and when bag opening is not affected, only the upper layer of the packaging bag needs to be reserved in length, and the lower layer of the packaging bag does not need to be reserved in length; the width of the packaging bag can be shortened, the packaging cost is reduced, and meanwhile after objects are packaged, packaging is more compact.

Description

Technical Field

[0001] This utility model relates to the field of packaging machine technology, and in particular to a bag opening mechanism for a packaging machine. Background Technology

[0002] Film packaging machines typically include the following mechanisms: bag making, bag feeding, bag opening, material feeding, and sealing. Bag opening refers to the process where the bag opening is opened before the feeding mechanism pushes the item to be packaged into the bag, allowing the feeding mechanism to insert the item. For example... Figure 1 As shown, Figure 1 This is a structural diagram showing the process of opening the bag, according to... Figure 1 The bag opening method meets all packaging requirements. Before opening, the lower layer of the bag is vacuum-adhered by the conveyor mechanism, while the upper layer is held in place by suction cups. The bag opening is first opened, and then a bag opening nozzle is inserted. The nozzle rotates to both sides, thus opening the bag opening to allow the item to be packaged to be smoothly pushed into the bag. Conventional bag opening nozzles are inserted horizontally. The applicant found that with a horizontal insertion, both the upper and lower layers of the bag need to be held in place, and the nozzle cannot touch the lower layer, otherwise it would damage it. Therefore, a certain length needs to be reserved for both the upper and lower layers, requiring a wider bag during manufacturing. Utility Model Content

[0003] Based on the above, the purpose of this utility model is to provide a bag opening mechanism for a packaging machine that, while meeting packaging requirements, can shorten the width of the packaging bag and make the packaging more compact.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model provides a bag opening mechanism for a packaging machine, including:

[0006] A feeding mechanism, on which a feeding rack is installed;

[0007] A pair of bag-supporting nozzles are disposed on the feeding frame, and the bag-supporting nozzles are configured to be rotatable;

[0008] A bag-supporting drive assembly is disposed on the feeding rack. The bag-supporting drive assembly drives the bag-supporting nozzle to move along a preset path. The bag-supporting nozzle extends along a second direction. The bag-supporting drive assembly drives the bag-supporting nozzle to be obliquely inserted into the opening of the packaging bag along the preset path. The angle between the preset path and the second direction is α, where 5°≤α≤10°.

[0009] Preferably, the bag opening mechanism of the packaging machine further includes a bag support mounting frame assembly, the bag support nozzle is disposed on the bag support mounting frame assembly, the output end of the bag support drive assembly is connected to the bag support mounting frame assembly, the bag support mounting frame assembly is slidably disposed on the feeding frame, and the sliding path of the bag support mounting frame assembly is at an angle equal to α with the second direction.

[0010] Preferably, both sides of the bag support mounting bracket assembly are provided with bag support sliders, the bag support sliders are provided with bag support grooves, and both sides of the feeding rack are provided with bag support slide rails that are paired one-to-one with the bag support sliders.

[0011] Preferably, the bag-supporting drive assembly is a first bag-supporting cylinder, and the bag-supporting mounting bracket assembly further includes two oppositely arranged bag-supporting drive plates, the bag-supporting sliders are arranged one-to-one on the bag-supporting drive plates, and the output end of the first bag-supporting cylinder is connected to the bag-supporting drive plate.

[0012] Preferably, the bag support mounting bracket assembly further includes a bag support connecting rod, and the two sides of the bag support connecting rod are respectively connected to the two bag support drive plates;

[0013] The bottom of both sides of the feeding rack is provided with bag support clearance grooves, and the bag support connecting rod passes through the bag support clearance grooves.

[0014] Preferably, two sets of bag support fixing frames are provided in the middle of the bag support connecting rod, and the bag support nozzles are set one-to-one on the bag support fixing frames.

[0015] Preferably, the bag support fixing frame includes two first bag support fixing plates, the first bag support fixing plates are connected to the bag support connecting rod, and the top of the two first bag support fixing plates is connected to a second bag support fixing plate;

[0016] The second bag support fixing plate is rotatably provided with a bag support shaft, and the top of the bag support shaft is connected to the bag support nozzle;

[0017] The bottom of the second bag support fixing plate is also provided with a bag support rotation drive assembly, and the output end of the bag support rotation drive assembly is connected to the bottom of the bag support shaft.

[0018] Preferably, a bag-supporting connecting plate is connected to the top of the bag-supporting rotating shaft, and the bag-supporting connecting plate is connected to the bag-supporting nozzle.

[0019] Preferably, the bag-supporting rotation drive assembly includes a second bag-supporting cylinder, the output end of the second bag-supporting cylinder is provided with a first bag-supporting rotating plate, the first bag-supporting rotating plate is provided with a bag-supporting coupling, the second bag-supporting rotating plate is rotatably connected to the bag-supporting coupling, and the second bag-supporting rotating plate is connected to the bottom of the bag-supporting rotating shaft.

[0020] Preferably, a material discharge channel is provided on the bag opening.

[0021] The beneficial effects of this utility model are as follows:

[0022] This utility model provides a bag opening mechanism for a packaging machine. The bag opening drive assembly drives the bag opening nozzle to be inserted obliquely into the bag opening of the packaging bag along the preset path. After being inserted into the packaging bag, the bag opening nozzle is sufficiently close to the lower layer of the packaging bag, but does not contact the lower layer. Without affecting the opening of the bag, only the upper layer of the packaging bag needs to reserve length, while the lower layer of the packaging bag does not need to reserve length. This can shorten the width of the packaging bag, reduce packaging costs, and make the packaging more compact after the packaged items are finished. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the bag opening mechanism in the prior art.

[0025] Figure 2 This is a schematic diagram of the walking path of the bag mouth in an embodiment of the present utility model;

[0026] Figure 3 A schematic diagram of the structure of a bag-opening mechanism of a packaging machine provided in an embodiment of this utility model;

[0027] Figure 4 This is a structural schematic diagram of another view of a bag-opening mechanism of a packaging machine provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the bag support mounting bracket assembly provided in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the bag-supporting rotation drive assembly provided in an embodiment of the present utility model;

[0030] Figure 7 This is a schematic diagram of the bag opening mechanism provided in an embodiment of the present invention.

[0031] Figure 8 Comparison diagram of the packaging bag after packaging, provided for an embodiment of this utility model.

[0032] In the diagram: 11. Feeding mechanism; 111. Feeding rack; 112. Bag opening clearance groove; 113. Bag opening slide rail; 12. Bag opening nozzle; 121. Material discharge channel; 13. Bag opening drive assembly; 131. First bag opening cylinder; 14. Bag opening mounting frame assembly; 141. Bag opening slider; 1411. Bag opening slide groove; 142. Bag opening drive plate; 143. Bag opening connecting rod; 144. Bag opening fixing frame; 1441. First bag opening fixing plate; 1442. Second bag opening fixing plate; 1443. Bag opening rotating shaft; 1444. Bag opening connecting plate; 145. Bag opening rotation drive assembly; 1451. Second bag opening cylinder; 1452. First bag opening rotating plate; 1453. Bag opening coupling; 1454. Second bag opening rotating plate; 15. Preset path; 16. Packaging bag; 17. Item. Detailed Implementation

[0033] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] like Figures 2 to 8 As shown, this embodiment of the present invention provides a bag-opening mechanism for a packaging machine, including: a feeding mechanism 11, which conveys the item 17 to be packaged along a second direction. The feeding mechanism 11 is prior art and not an innovation of this embodiment, so it will not be described in detail here. A feeding frame 111 is provided on it; a pair of bag-supporting nozzles 12 are provided on the feeding frame 111, and the bag-supporting nozzles 12 are provided with a material discharge channel 121 to facilitate material discharge. The bag-supporting nozzles 12 are configured to be rotatable. The bag opening nozzle 12 rotates to open the bag opening of the packaging bag 16; the bag opening drive assembly 13 is disposed on the feeding rack 111, the bag opening drive assembly 13 drives the bag opening nozzle 12 to move along a preset path 15, the bag opening nozzle 12 extends along a second direction, the bag opening drive assembly 13 drives the bag opening nozzle 12 to be obliquely inserted into the bag opening of the packaging bag 16 along the preset path 15, the angle between the preset path 15 and the second direction is α, 5°≤α≤15°, preferably, the α is 10°.

[0038] This utility model embodiment provides a bag opening mechanism for a packaging machine. The bag support drive assembly 13 drives the bag support nozzle 12 to be inserted obliquely into the bag opening of the packaging bag 16 along the preset path 15. After being inserted into the packaging bag 16, the bag support nozzle 12 is sufficiently close to the lower layer of the packaging bag 16, but does not contact the lower layer. While not affecting the opening of the bag, only the upper layer of the packaging bag 16 needs to reserve length, and the lower layer of the packaging bag 16 does not need to reserve length. This can shorten the width of the packaging bag 16, reduce packaging costs, and make the packaging more compact after the item 17 is packaged.

[0039] For example, such as Figure 7 As shown, when the bag opening 12 is fully inserted into the opening of the packaging bag 16, after rotating to open the bag, both the lower and upper layers of the packaging bag 16 are attracted. The bag opening 12 is tightly attached to the lower layer of the packaging bag 16, so that the lower layer of the packaging bag 16 has no reserved length, only the upper layer of the packaging bag 16 has reserved length, shortening the width of the packaging bag 16 and reducing packaging costs. Figure 8 As shown, Figure 8 a is a schematic diagram of the case where the bag opening 12 is horizontally inserted into the packaging bag 16 to open the bag, and the same items 17 are packaged together. Figure 8b is a schematic diagram illustrating the case where the bag opening 12 is inserted obliquely into the packaging bag 16 via the preset path 15 of this embodiment of the invention to open the bag, and the same items 17 are packaged. It can be seen that... Figure 8 The packaging bag 16 of item b is shorter and more compact. For ordinary items 17, compact packaging might not be a concern, but for card packaging, especially for stacked cards, tight card alignment is essential. The solution provided by this embodiment effectively improves the compactness of card packaging. Furthermore, for the currently popular blind box type of cards, the rarest card is often hidden among several stacked cards; if the packaging is not compact, the discrepancy is easily detected by players.

[0040] like Figures 3 to 6 As shown, the bag opening mechanism of the packaging machine also includes a bag support mounting frame assembly 14. The bag support nozzle 12 is disposed on the bag support mounting frame assembly 14. The output end of the bag support drive assembly 13 is connected to the bag support mounting frame assembly 14. The bag support mounting frame assembly 14 is slidably disposed on the feeding rack 111. The sliding path of the bag support mounting frame assembly 14 forms an angle α with the second direction. Both sides of the bag support mounting frame assembly 14 are provided with bag support sliders 141. Each bag support slider 141 is provided with a bag support groove 1411. Both sides of the feeding rack 111 are provided with bag support slide rails 113 that are paired one-to-one with the bag support sliders 141. The bag support slide rails 113 form the sliding path, and the angle between the bag support slide rails 113 and the second direction is equal to α. The bag-supporting drive assembly 13 is a first bag-supporting cylinder 131. The bag-supporting mounting frame assembly 14 also includes two opposing bag-supporting drive plates 142. The bag-supporting sliders 141 are arranged one-to-one on the bag-supporting drive plates 142. The output end of the first bag-supporting cylinder 131 is connected to the bag-supporting drive plate 142. The bag-supporting sliders 141 are located on the side of the bag-supporting drive plate 142 near the feeding rack 111, and the output end of the first bag-supporting cylinder 131 is connected to the side of the bag-supporting drive plate 142 away from the feeding rack 111. Specifically, in this embodiment, the two sets of first bag-supporting cylinders 131 synchronously drive the bag-supporting drive plates 142 to slide. Since the bag-supporting drive plates 142 slide on the slide rail through the bag-supporting sliders 141, the entire bag-supporting mounting frame assembly 14 slides along the sliding path. The angle of the sliding path is equal to α. The bag-supporting mounting frame assembly 14 then drives the bag-supporting nozzle 12 to be inserted into the bag opening of the packaging bag 16 along the preset path 15.

[0041] like Figures 3 to 6As shown, the bag support mounting bracket assembly 14 also includes a bag support connecting rod 143, with two bag support driving plates 142 connected to both sides of the bag support connecting rod 143 respectively; bag support clearance grooves 112 are provided at the bottom of both sides of the feeding rack 111, and the bag support connecting rod 143 passes through the bag support clearance grooves 112. The bag support clearance grooves 112 provide reserved movement space for the entire bag support mounting bracket assembly 14. Two sets of bag support fixing brackets 144 are provided in the middle of the bag support connecting rod 143, and the bag support nozzles 12 are set one-to-one on the bag support fixing brackets 144. The bag-supporting fixing frame 144 includes two first bag-supporting fixing plates 1441, which are connected to the bag-supporting connecting rod 143. A second bag-supporting fixing plate 1442 is connected to the top of each of the two first bag-supporting fixing plates 1441. A bag-supporting rotating shaft 1443 is rotatably mounted on the second bag-supporting fixing plate 1442, and a bag-supporting bearing is also mounted on the second bag-supporting fixing plate 1442. The bag-supporting rotating shaft 1443 is sleeved within the bag-supporting bearing, and its top is connected to the bag-supporting nozzle 12. A bag-supporting rotation drive assembly 145 is also provided at the bottom of the second bag-supporting fixing plate 1442, and its output end is connected to the bottom of the bag-supporting rotating shaft 1443. A bag-supporting connecting plate 1444 is connected to the top of the bag-supporting rotating shaft 1443, and the bag-supporting connecting plate 1444 is connected to the bag-supporting nozzle 12. The bag-supporting rotation drive assembly 145 includes a second bag-supporting cylinder 1451. The output end of the second bag-supporting cylinder 1451 is provided with a first bag-supporting rotating plate 1452. The first bag-supporting rotating plate is provided with a bag-supporting coupling 1453. A second bag-supporting rotating plate 1454 is rotatably connected to the bag-supporting coupling 1453. The second bag-supporting rotating plate 1454 is connected to the bottom of the bag-supporting rotating shaft 1443. In this embodiment, when opening the bag, the bag opening nozzle 12 needs to rotate to open the bag opening of the packaging bag 16; the second bag opening cylinder 1451 drives the first bag opening rotating plate 1452 to move back and forth, and the first bag opening rotating plate 1452 will drive the bag opening coupling 1453 to move back and forth. Since one end of the second bag opening rotating plate 1454 is rotatably connected to the bag opening coupling and the other end is connected to the bottom of the bag opening rotating shaft 1443, the second bag opening rotating plate 1454 will swing repeatedly around the center point of the bag opening rotating shaft 1443 as the origin. At the same time, the bag opening rotating shaft 1443 will also rotate back and forth. The bag opening rotating shaft 1443 then drives the bag opening nozzle 12 to move back and forth through the bag opening connecting plate 1444 to continuously open the bag.

[0042] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A bag-opening mechanism for a packaging machine, characterized in that, include: A feeding mechanism, on which a feeding rack is installed; A pair of bag-supporting nozzles are disposed on the feeding frame, and the bag-supporting nozzles are configured to be rotatable; A bag-supporting drive assembly is disposed on the feeding rack. The bag-supporting drive assembly drives the bag-supporting nozzle to move along a preset path. The bag-supporting nozzle extends along a second direction. The bag-supporting drive assembly drives the bag-supporting nozzle to be obliquely inserted into the opening of the packaging bag along the preset path. The angle between the preset path and the second direction is α, where 5°≤α≤10°.

2. The bag opening mechanism of a packaging machine according to claim 1, characterized in that, The packaging machine's bag opening mechanism also includes a bag support mounting frame assembly. The bag support nozzle is disposed on the bag support mounting frame assembly. The output end of the bag support drive assembly is connected to the bag support mounting frame assembly. The bag support mounting frame assembly is slidably disposed on the feeding rack. The angle between the sliding path of the bag support mounting frame assembly and the second direction is equal to α.

3. The bag opening mechanism of a packaging machine according to claim 2, characterized in that, Both sides of the bag support mounting bracket assembly are provided with bag support sliders, and the bag support sliders are provided with bag support grooves. Both sides of the feeding rack are provided with bag support slide rails that are paired one-to-one with the bag support sliders.

4. The bag opening mechanism of a packaging machine according to claim 3, characterized in that, The bag-supporting drive assembly is a first bag-supporting cylinder, and the bag-supporting mounting bracket assembly also includes two oppositely arranged bag-supporting drive plates. The bag-supporting sliders are arranged one-to-one on the bag-supporting drive plates, and the output end of the first bag-supporting cylinder is connected to the bag-supporting drive plate.

5. The bag opening mechanism of a packaging machine according to claim 4, characterized in that, The bag support mounting bracket assembly also includes a bag support connecting rod, and the two sides of the bag support connecting rod are respectively connected to the two bag support drive plates; The bottom of both sides of the feeding rack is provided with bag support clearance grooves, and the bag support connecting rod passes through the bag support clearance grooves.

6. The bag opening mechanism of a packaging machine according to claim 5, characterized in that, Two sets of bag support fixing frames are provided in the middle of the bag support connecting rod, and the bag support nozzles are set one-to-one on the bag support fixing frames.

7. The bag opening mechanism of a packaging machine according to claim 6, characterized in that, The bag support fixing frame includes two first bag support fixing plates, the first bag support fixing plates are connected to the bag support connecting rod, and the top of the two first bag support fixing plates are connected to a second bag support fixing plate; The second bag support fixing plate is rotatably provided with a bag support shaft, and the top of the bag support shaft is connected to the bag support nozzle; The bottom of the second bag support fixing plate is also provided with a bag support rotation drive assembly, and the output end of the bag support rotation drive assembly is connected to the bottom of the bag support shaft.

8. The bag opening mechanism of a packaging machine according to claim 7, characterized in that, The top of the bag-supporting shaft is connected to a bag-supporting connecting plate, which is connected to the bag-supporting nozzle.

9. The bag opening mechanism of a packaging machine according to claim 7, characterized in that, The bag-supporting rotation drive assembly includes a second bag-supporting cylinder, the output end of which is provided with a first bag-supporting rotating plate, and a bag-supporting coupling is provided on the first bag-supporting rotating plate. The second bag-supporting rotating plate is rotatably connected to the bag-supporting coupling and is connected to the bottom of the bag-supporting rotating shaft.

10. A bag-opening mechanism for a packaging machine according to any one of claims 1 to 9, characterized in that, The bag opening is equipped with a material discharge channel.

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