Bag clamping and sealing mechanism suitable for vertical bagging machine

Abstract

The utility model discloses a bag clamping and sealing mechanism suitable for a vertical bagging machine, and relates to the technical field of packaging machinery. The bag clamping and conveying mechanism is an improved structure on the basis of a bag clamping and conveying mechanism in an existing vertical bagging machine, a bag clamping plate of the existing bag clamping and conveying mechanism is changed into a linear translation reciprocating type motion mode from an occlusion type motion mode, and a heat sealing air cylinder and a heat sealing ironing block are additionally arranged on the bag clamping plate. After bag opening arrangement and / or vacuumizing of the packaging bag are / is completed, the bag opening of the packaging bag is clamped by the pair of bag clamping plates, the heat sealing air cylinder acts to conduct heat sealing on the bag opening, and then the packaging bag is translated to the output mechanism to be output. According to the improved structure, the heat-sealing ironing block and the bag clamping plate are combined together, transfer from the bag clamping and conveying mechanism to the heat-sealing mechanism is reduced, sealing is directly carried out, the vacuum leakage risk is reduced, the sealing efficiency is improved, original occlusion type sealing is changed into linear reciprocating type sealing, sealing is more uniform, and the sealing effect is better.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery technology, and more specifically to a bag clamping and sealing mechanism suitable for vertical bagging machines. Background Technology

[0002] Many everyday items need to be packaged in bags to keep them fresh. Currently, most packaging methods still rely on manual or semi-manual methods combining machinery and manual labor. For example, items are placed on an assembly line and transported to workers who then pack them into bags. This low level of automation results in low production efficiency, which is not conducive to packaging large quantities of products at present, leading to higher processing costs.

[0003] For example, the utility model patent with the authorization announcement date of June 9, 2023, authorization announcement number CN219154893U, and title "Bag-type Vertical Bag-making Machine", after the lifting mechanism receives the packaging bag, the corner insertion device shapes the bag opening, and then the bag clamping and feeding mechanism clamps the shaped bag opening and transfers the packaging bag from the lifting mechanism to the sealing mechanism for sealing.

[0004] The sealing method of the above-mentioned vertical bagging machine increases the number of times the packaging bag is transferred and reduces the sealing efficiency of the packaging bag. If the packaging bag is vacuumed, the risk of vacuum leakage during the transfer process is also increased. In addition, the existing vertical bagging machine uses an interlocking sealing mechanism, which can lead to uneven heat sealing at the sealing point of the packaging bag and is also prone to causing poor sealing. Utility Model Content

[0005] To overcome the defects and shortcomings of the existing technology, this utility model provides a bag clamping and sealing mechanism suitable for vertical bagging machines. The purpose of this invention is to solve the problems of low sealing efficiency, increased risk of vacuum leakage of packaging bags, and uneven heat sealing in the aforementioned vertical bagging machines. The bag clamping and sealing mechanism of this utility model is an improved structure based on the existing bag clamping and feeding mechanism in the vertical bagging machine. This utility model changes the clamping plate of the existing bag clamping and feeding mechanism from a biting motion mode to a linear translational reciprocating motion mode. At the same time, a heat sealing cylinder and a heat sealing block are added to the clamping plate. After the packaging bag has completed bag opening preparation and / or vacuuming, a pair of clamping plates clamp the bag opening, and the heat sealing cylinder actuates to heat seal the bag opening. Then, the packaging bag is moved horizontally to the output mechanism for output. The improved structure of this utility model combines the heat-sealing block and the bag clamping plate, reducing the transfer from the bag clamping and feeding mechanism to the heat-sealing mechanism, and directly sealing the bag, reducing the risk of vacuum leakage, improving sealing efficiency, and changing the original interlocking sealing to a linear reciprocating sealing, resulting in a more uniform sealing and a better sealing effect.

[0006] To address the problems existing in the prior art, the present invention is achieved through the following technical solution.

[0007] This utility model provides a bag clamping and sealing mechanism suitable for a vertical bagging machine, including a bag clamping opening assembly and a translation drive assembly. The bag clamping opening assembly is mounted on the translation drive assembly and reciprocates under the drive of the translation drive assembly. The bag clamping opening assembly includes a bag clamping mounting frame, a first bag clamping plate, a second bag clamping plate, and a bag clamping drive assembly. The first bag clamping plate is slidably mounted on the bag clamping mounting frame via a first bag clamping connecting plate, and the second bag clamping plate is slidably mounted on the bag clamping mounting frame via a second bag clamping connecting plate. The bag clamping drive assembly drives the first bag clamping connecting plate and the second bag clamping connecting plate to reciprocate relative to each other, realizing the clamping and releasing of the bag opening by the first bag clamping plate and the second bag clamping plate. A first heat-sealing cylinder is mounted on the first bag clamping plate, and a first heat-sealing hot plate is mounted on the extended end of the first heat-sealing cylinder. A second heat-sealing cylinder is mounted on the second bag clamping plate, and a second heat-sealing hot plate is mounted on the extended end of the second heat-sealing cylinder. The first heat-sealing hot plate and the second heat-sealing hot plate are arranged opposite to each other and are parallel to the first bag clamping plate and the second bag clamping plate.

[0008] The working principle of this invention is as follows: After the bag opening is prepared and / or the bag is vacuumed, the bag clamping drive assembly drives the first and second bag clamping connecting plates to move closer together, causing them to clamp the bag opening. Then, the first and second heat-sealing cylinders extend simultaneously, and the first and second heat-sealing blocks clamp the bag opening and perform heat sealing. The improved structure allows for immediate heat sealing after the bag opening is clamped, improving sealing efficiency, reducing the risk of vacuum leakage, and using a translational sealing method for more uniform sealing and improved sealing effect.

[0009] More preferably, the ends of the first and second clamping plates used to clamp the opening of the packaging bag are equipped with clamping strips.

[0010] More preferably, the bag clip is made of rubber.

[0011] More preferably, the bag clamping mounting bracket is provided with two parallel slide rails, and the first bag clamping connecting plate and the second bag clamping connecting plate are each equipped with a first slider and a second slider. The first slider slides in cooperation with the upper slide rail, and the second slider slides in cooperation with the lower slide rail.

[0012] More preferably, the bag clamping drive assembly includes a bag clamping servo motor assembly, a bag clamping rotating arm, a first connecting rod, and a second connecting rod. The bag clamping servo motor assembly is mounted on the bag clamping mounting frame, and the bag clamping rotating arm is mounted on the output shaft of the bag clamping servo motor assembly. One end of the bag clamping rotating arm is hinged to one end of the first connecting rod, and the other end of the first connecting rod is hinged to a first bag clamping connecting plate. The other end of the bag clamping rotating arm is connected to one end of the second connecting rod, and the other end of the second connecting rod is hinged to a second bag clamping connecting plate.

[0013] More preferably, the hinge point where the first connecting rod is hinged to the first bag connecting plate and the hinge point where the second connecting rod is hinged to the second bag connecting plate are located on the plate between the first slider and the second slider.

[0014] More preferably, the translation drive assembly includes a translation slide rail that slides with the bag clamping mounting bracket and a translation servo motor assembly mounted on the bag clamping mounting bracket; the translation slide rail is mounted on the frame, a translation gear is mounted on the output shaft of the translation servo motor assembly, and a rack that meshes with the translation gear is fixed on the frame on which the translation slide rail is mounted, the rack being parallel to the translation slide rail.

[0015] More preferably, the translation drive assembly includes two parallel translation slide rails, and the bag clamp mounting bracket is slidably mounted on the two translation slide rails.

[0016] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0017] 1. This utility model assembles a heat-sealing block onto a bag-clamping plate via a heat-sealing cylinder. Heat sealing can be performed immediately during bag clamping, avoiding the need for the bag to be transferred to the heat-sealing mechanism. This integrates the heat-sealing process with the bag clamping and translation process, improving the sealing output efficiency of the packaging bags. Simultaneously, sealing the packaging bag can be performed immediately during clamping, reducing the risk of bag opening repositioning (after bag opening adjustment). When used in conjunction with a vacuum mechanism, it also reduces the risk of vacuum leakage.

[0018] 2. This utility model changes the existing interlocking bag clamping motion to a translational motion, which makes the clamping force applied to the bag opening by the clamping plate more uniform and avoids the problem of excessive local clamping force. At the same time, the sealing method of the heat sealing block is also changed from interlocking to translational sealing, which also makes the sealing more uniform and helps to improve the sealing performance of the bag opening. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the bag-clamping and sealing mechanism of this utility model;

[0020] Reference numerals: 1. Bag clamping mouth assembly; 2. Translation drive assembly; 3. Bag clamping mounting bracket; 4. First bag clamping plate; 5. Second bag clamping plate; 6. First bag clamping connecting plate; 7. Second bag clamping connecting plate; 8. First heat sealing cylinder; 9. Second heat sealing cylinder; 10. First heat sealing block; 11. Second heat sealing block; 12. Bag clamping strip; 13. Upper slide rail; 14. Lower slide rail; 15. First slider; 16. Second slider; 17. Bag clamping servo motor assembly; 18. Bag clamping rotating arm; 19. First connecting rod; 20. Second connecting rod; 21. Translation slide rail; 22. Translation servo motor assembly. Detailed Implementation

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described 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.

[0022] As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 1 As shown, this embodiment discloses a bag clamping and sealing mechanism suitable for a vertical bagging machine, including a bag clamping opening assembly 1 and a translation drive assembly. The bag clamping opening assembly 1 is mounted on the translation drive assembly 2 and reciprocates under the drive of the translation drive assembly. The bag clamping opening assembly 1 includes a bag clamping mounting frame 3, a first bag clamping plate 4, a second bag clamping plate 5, and a bag clamping drive assembly. The first bag clamping plate 4 is slidably mounted on the bag clamping mounting frame 3 via a first bag clamping connecting plate 6, and the second bag clamping plate 5 is slidably mounted on the bag clamping mounting frame 3 via a second bag clamping connecting plate 7. The driving component drives the first bag clamping connecting plate 6 and the second bag clamping connecting plate 7 to reciprocate relative to each other, thereby realizing the clamping and release of the bag opening by the first bag clamping plate 4 and the second bag clamping plate 5; the first bag clamping plate 4 is equipped with a first heat sealing cylinder 8, and the extended end of the first heat sealing cylinder 8 is equipped with a first heat sealing hot block 10; the second bag clamping plate 5 is equipped with a second heat sealing cylinder 9, and the extended end of the second heat sealing cylinder is equipped with a second heat sealing hot block 11. The first heat sealing hot block 10 and the second heat sealing hot block 11 are arranged opposite to each other and are parallel to the first bag clamping plate 4 and the second bag clamping plate 5.

[0023] After the bag opening is prepared and / or after vacuuming, the bag clamping drive assembly drives the first bag clamping connecting plate 6 and the second bag clamping connecting plate 7 to move closer together, causing the first bag clamping plate 4 and the second bag clamping plate 5 to clamp the bag opening. Then, the first heat sealing cylinder 8 and the second heat sealing cylinder 9 extend simultaneously, and the first heat sealing block 10 and the second heat sealing block 11 clamp the bag opening and perform heat sealing. The improved structure allows for immediate heat sealing after the bag opening is clamped, improving sealing efficiency, reducing the risk of vacuum leakage, and using a translational sealing method for more uniform sealing and improved sealing effect.

[0024] In one embodiment of this invention, to facilitate the vacuuming operation of the packaging bag, the first clamping plate 4 and the second clamping plate 5 are equipped with clamping strips 12 at the ends of the packaging bag openings. The clamping strips 12 are made of a soft material with good sealing properties, so that they can cooperate with the vacuum tube of the vacuuming mechanism to clamp the packaging bag. The soft material of the clamping strips 12 allows for some space to be reserved for the vacuum tube, facilitating the vacuuming operation after the clamping plates clamp the bag opening. Preferably, the clamping strips 12 are made of rubber.

[0025] As another implementation of this embodiment, this embodiment changes the existing interlocking motion of the bag clamping plate to a reciprocating translational motion. To ensure the stability of the bag clamping plate's movement and to better transmit the driving force of the bag clamping drive assembly to the bag clamping plate, this embodiment provides two parallel slide rails on the bag clamping mounting frame 3. A first slider 15 and a second slider 16 are mounted on both the first bag clamping connecting plate 6 and the second bag clamping connecting plate 7. The first slider 15 slides in conjunction with the upper slide rail 13, and the second slider 16 slides in conjunction with the lower slide rail 14. This increases the operational stability of the first bag clamping connecting plate 6 and the second bag clamping connecting plate 7. Simultaneously, the connection point of the bag clamping drive assembly can be located between the first slider 15 and the second slider 16 to facilitate smoother force transmission.

[0026] As another embodiment of this invention, please refer to the appendix to the specification. Figure 1 As shown, the bag clamping drive assembly includes a bag clamping servo motor assembly 17, a bag clamping rotating arm 18, a first connecting rod 19, and a second connecting rod 20. The bag clamping servo motor assembly 17 is mounted on the bag clamping mounting bracket 3. The bag clamping rotating arm 18 is mounted on the output shaft of the bag clamping servo motor assembly 17. One end of the bag clamping rotating arm 18 is hinged to one end of the first connecting rod 19, and the other end of the first connecting rod 19 is hinged to the first bag clamping connecting plate 6. The other end of the bag clamping rotating arm 18 is connected to one end of the second connecting rod 20, and the other end of the second connecting rod 20 is hinged to the second bag clamping connecting plate 7.

[0027] In this embodiment combined with the previous embodiment, the hinge points where the first connecting rod 19 is hinged to the first bag-clamping connecting plate 6 and the second connecting rod 20 is hinged to the second bag-clamping connecting plate are located on the plate between the first slider 15 and the second slider 16. This facilitates smoother force transmission.

[0028] This embodiment only shows one implementation structure of the bag clamping drive assembly. The bag clamping drive assembly can also adopt the structure of a synchronous belt pulley assembly + bag clamping servo motor assembly 17, wherein the first bag clamping connecting plate 6 can be fixed on one side of the annular synchronous belt, and the second bag clamping connecting plate 7 is fixed on the other side of the annular synchronous belt. When the bag clamping servo motor assembly 17 drives the annular synchronous belt to rotate, the first bag clamping connecting plate 6 and the second bag clamping connecting plate 7 move relative to each other (closer or farther apart).

[0029] As another example of this embodiment, the bag clamping drive assembly can also be implemented using a structure of bag clamping servo motor assembly 17 + bidirectional threaded screw.

[0030] In another embodiment of this invention, the translation drive assembly 2 includes a translation slide rail 21 that slides with the bag clamping mounting frame 3 and a translation servo motor assembly 22 mounted on the bag clamping mounting frame 3. The translation slide rail 21 is mounted on the frame, and a translation gear (not shown in the figure) is mounted on the output shaft of the translation servo motor assembly 22. A rack (not shown in the figure) that meshes with the translation gear is fixed on the frame on which the translation slide rail 21 is mounted. The rack and the translation slide rail 21 are parallel to each other.

[0031] As an example of this embodiment, the structure of the translation drive assembly 2 can also be a translation servo motor assembly 22 + synchronous pulley assembly, or a translation servo motor assembly 22 + single threaded screw.

[0032] Furthermore, two parallel sliding rails 21 are provided, and the bag clamping mounting frame 3 is slidably assembled on the two sliding rails 21 to ensure the stable operation of the bag clamping mounting frame 3.

[0033] The bag clamping servo motor assembly 17 and the translation servo motor assembly 22 mentioned above are both combinations of servo motors and reducers.

Claims

1. A bag clamping and sealing mechanism suitable for vertical bagging machine, comprising a bag clamping and sealing assembly (1) and a translation driving assembly (2), the bag clamping and sealing assembly (1) is arranged on the translation driving assembly (2) and reciprocatingly translates under the driving of the translation driving assembly; the bag clamping and sealing assembly (1) comprises a bag clamping and sealing mounting frame (3), a first bag clamping plate (4), a second bag clamping plate (5) and a bag clamping and sealing driving assembly; characterized in that: The first bag clamping plate (4) is slidably assembled on the bag clamping mounting frame (3) through the first bag clamping connecting plate (6), and the second bag clamping plate (5) is slidably assembled on the bag clamping mounting frame (3) through the second bag clamping connecting plate (7); the bag clamping driving assembly drives the first bag clamping connecting plate (6) and the second bag clamping connecting plate (7) to reciprocate relative to each other, so that the first bag clamping plate (4) and the second bag clamping plate (5) clamp and release the bag opening of the packaging bag; the first bag clamping plate (4) is provided with the first heat sealing air cylinder (8), and the first heat sealing air cylinder (8) is provided with the first heat sealing block (10) at the extending end; the second bag clamping plate (5) is provided with the second heat sealing air cylinder (9), and the second heat sealing air cylinder (9) is provided with the second heat sealing block (11) at the extending end, the first heat sealing block (10) and the second heat sealing block (11) are arranged opposite to each other and parallel to the first bag clamping plate (4) and the second bag clamping plate (5).

2. A bag sealing mechanism for a vertical bagging machine according to claim 1, characterized in that: The first bag clamping plate (4) and the second bag clamping plate (5) are provided with the bag clamping strips (12) at the ends for clamping the bag opening of the packaging bag.

3. A bag sealing mechanism for a vertical bagging machine according to claim 2, wherein: The bag clamping strips (12) are made of rubber.

4. A bag closing mechanism for a vertical bagging machine according to any one of claims 1 to 3, characterized in that: The bag clamping mounting frame (3) is provided with two parallel slide rails, the first bag clamping connecting plate (6) and the second bag clamping connecting plate (7) are provided with the first slide block (15) and the second slide block (16), the first slide block (15) is in sliding cooperation with the upper slide rail (13), and the second slide block (16) is in sliding cooperation with the lower slide rail (14).

5. A bag sealing mechanism for a vertical bagging machine according to claim 4, wherein: The bag clamping driving assembly comprises a bag clamping servo motor assembly (17), a bag clamping rotating arm (18), a first connecting rod (19) and a second connecting rod (20), the bag clamping servo motor assembly (17) is assembled on the bag clamping mounting frame (3), the bag clamping rotating arm (18) is assembled on the output shaft of the bag clamping servo motor assembly (17), one end of the bag clamping rotating arm (18) is hinged to one end of the first connecting rod (19), and the other end of the first connecting rod (19) is hinged to the first bag clamping connecting plate (6); the other end of the bag clamping rotating arm (18) is connected to one end of the second connecting rod (20), and the other end of the second connecting rod (20) is hinged to the second bag clamping connecting plate (7).

6. A bag sealing mechanism for a vertical bagging machine according to claim 5, wherein: The hinge points of the first connecting rod (19) and the first bag clamping connecting plate (6) and the hinge points of the second connecting rod (20) and the second bag clamping connecting plate (7) are located on the plate body between the first slide block (15) and the second slide block (16).

7. A bag closing mechanism for a vertical bagging machine according to any one of claims 1 to 3, characterized in that: The translation driving assembly (2) comprises a translation slide rail (21) in sliding cooperation with the bag clamping mounting frame (3) and a translation servo motor assembly (22) assembled on the bag clamping mounting frame (3); the translation slide rail (21) is assembled on the rack, the output shaft of the translation servo motor assembly (22) is provided with a translation gear, the rack fixed on the rack where the translation slide rail (21) is assembled is in meshing cooperation with the translation gear, and the rack and the translation slide rail (21) are parallel to each other.

8. A bag sealing mechanism for a vertical bagging machine according to claim 7, wherein: The translation driving assembly (2) comprises two parallel translation slide rails (21), and the bag clamping mounting frame (3) is slidably assembled on the two translation slide rails (21).

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