Heat sealing cutter of bag making machine

Abstract

The utility model discloses a heat-sealing cutter of a bag making machine. The heat-sealing cutter comprises a first heat-sealing cutter head, a second heat-sealing cutter head, a cutting cutter head, a cutter rest cross beam, a motor driving rod seat and a cutter bearing table. A first knife rest adjusting rod, a second knife rest adjusting rod and a third knife rest adjusting rod are arranged on the knife rest cross beam, and the motor driving rod seat comprises a motor driving rod connected with the knife rest cross beam so as to drive the knife rest cross beam to ascend and descend and complete synchronous driving ascending and descending of cutting and heat sealing, so that working procedures are saved, and efficiency is improved; the cutter bearing table is in contact with the cutting cutter head, the first heat-sealing cutter head and the second heat-sealing cutter head after the cutter frame cross beam descends, the distance between the heat-sealing cutter head or the cutting cutter head and the cutter frame cross beam is correspondingly controlled through connection and adjustment of the cutter frame adjusting rods, and the cutter head capable of making contact with a plastic film is changed. According to different application scenes, various operation modes such as independent edge sealing, independent cutting, synchronous edge sealing and cutting, bag bottom and bag opening edge sealing and the like are freely selected, so that the application range of the heat sealing cutter is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of bag-making machines, especially the heat-sealing cutter of a bag-making machine. Background Art

[0002] A packaging bag, which is used to package various articles, is born for the convenience of transporting goods and easy storage during the production and circulation process, and is widely used in daily life and industrial production. The most common packaging bag is mainly a plastic packaging bag. A bag-making machine is a machine for making various plastic packaging bags or packaging bags of other materials. Its processing range includes plastic or other material packaging bags of various sizes, thicknesses and specifications. Generally speaking, plastic packaging bags are the main products. The working process of a bag-making machine mainly includes steps such as feeding a plastic film roll, sealing edges, cutting, discharging and folding, etc., so as to make a plastic film bag.

[0003] When sealing the edges, it is completed by the heat-sealing cutter of the bag-making machine. Its working principle is that the plastic film passes between the heat-sealing cutter head and the knife-bearing table. When the heat-sealing cutter head is driven to move downward to contact the knife-bearing table, the two layers of the plastic film sandwiched between the heat-sealing cutter head and the knife-bearing table will be heat-sealed to form a strip-shaped sealing strip corresponding to the edge of the heat-sealing cutter head. In the existing technology, the bag-making machine then needs to cut the plastic film after edge-sealing into individual bag bodies through a cutting tool in other processes, and the cutting tool also needs to be provided with corresponding driving components additionally, so the process is not concise enough and the operation efficiency needs to be improved. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a heat-sealing cutter for a bag-making machine to solve the above problems.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a heat-sealing cutter for a bag-making machine, which includes a first heat-sealing cutter head, a second heat-sealing cutter head, a cutting cutter head, a tool rest cross beam, a motor driving rod seat and a knife-bearing table.

[0007] A cutting blade for cutting the packaging bag film is fixedly installed at the bottom of the cutting tool head; the first heat-sealing tool head is arranged side by side on one side of the cutting tool head; the second heat-sealing tool head is arranged side by side on the other side of the cutting tool head opposite to the first heat-sealing tool head; a first tool rest adjusting rod, a second tool rest adjusting rod and a third tool rest adjusting rod are arranged on the tool rest cross beam. The first tool rest adjusting rod is connected to the first heat-sealing tool head and is used to control the distance between the first heat-sealing tool head and the tool rest cross beam by adjusting the telescopic length. The second tool rest adjusting rod is connected to the second heat-sealing tool head and is used to control the distance between the second heat-sealing tool head and the tool rest cross beam by adjusting the telescopic length. The third tool rest adjusting rod is connected to the cutting tool head and is used to control the distance between the cutting tool head and the tool rest cross beam by adjusting the telescopic length. The motor driving rod seat includes two mounting plates and motor driving rods respectively installed on the two mounting plates. The motor driving rod is connected to the tool rest cross beam and is used to drive the lifting movement of the tool rest cross beam. The knife supporting table is located below the tool rest cross beam and is fixed between the two mounting plates and is used to engage with the cutting tool head, the first heat-sealing tool head and the second heat-sealing tool head after the tool rest cross beam descends.

[0008] Preferably, two pressure film strips are respectively connected to both sides of the cutting blade of the cutting tool head through connecting columns. Springs are sleeved on the connecting columns. The springs abut against the bottom of the cutting tool head and the top of the pressure film strips. The cutting tool head is correspondingly formed with T-shaped grooves at the top ends for accommodating the connecting columns, so that the connecting columns can move up and down in the T-shaped grooves.

[0009] Preferably, the bottom surface of the pressure film strip is lower than the height of the cutting blade when the spring is in the original length state.

[0010] Preferably, a flange extends downward from the bottom of the cutting tool head, and a knife clamping groove is formed in the flange. The cutting blade is detachably locked in the knife clamping groove through a screw penetrating the side surface of the flange.

[0011] Preferably, length adjusting handles are arranged on the first tool rest adjusting rod, the second tool rest adjusting rod and the third tool rest adjusting rod. The first tool rest adjusting rod, the second tool rest adjusting rod and the third tool rest adjusting rod are locked to the tool rest cross beam through linear bearing flanges.

[0012] Preferably, the motor driving rod is locked to the mounting plate through a motor linear bearing.

[0013] Preferably, cooling groove holes are formed in the first heat-sealing tool head, the second heat-sealing tool head and the cutting tool head.

[0014] The technical effects achieved by the technical solution of the present invention mainly include:

[0015] For the heat-sealing cutter of the above bag-making machine, the first heat-sealing cutter head, the second heat-sealing cutter head, and the cutting cutter head are respectively connected to the cutter head cross beam through the corresponding first cutter head adjusting rod, second cutter head adjusting rod, and third cutter head adjusting rod, so that the motor driving rod can drive the first heat-sealing cutter head, the second heat-sealing cutter head, and the cutting cutter head to move up and down together, without the need to additionally configure a driving component for the cutting cutter head at other positions, streamlining the process and saving equipment costs and occupied space;

[0016] Since the first cutter head adjusting rod, the second cutter head adjusting rod, and the third cutter head adjusting rod are respectively telescopically adjustable, the initial height positions of the first heat-sealing cutter head, the second heat-sealing cutter head, and the cutting cutter head can be adjusted as needed, so as to select the cutter head that can contact the plastic film, enabling the heat-sealing cutter to freely select various operation modes such as single-side sealing, single-side cutting, simultaneous sealing and cutting, and sealing of the bag bottom and bag mouth according to different requirements;

[0017] A pressure film strip is connected by a connecting column sleeved with a spring below the cutting cutter head. The pressure film strip always contacts the plastic film earlier than the cutting blade and detaches from the plastic film surface later than the cutting blade, so that during the cutting process, the plastic film is always pressed and fixed, preventing the plastic film from shifting during cutting and ensuring stable operation. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the heat-sealing cutter of the bag-making machine provided by the present utility model;

[0019] Figure 2 Corresponding to Figure 1 The partial enlarged view of the circular dotted-line frame area A in;

[0020] Figure 3 It is a layout schematic diagram of the first heat-sealing cutter head, the second heat-sealing cutter head, and the cutting cutter head in the heat-sealing cutter.

[0021] The respective reference numerals in the above drawings are:

[0022] The first heat-sealing cutter head 1, the second heat-sealing cutter head 2, the cutting cutter head 3, the T-shaped groove 30, the cutting blade 31, the connecting column 32, the pressure film strip 33, the spring 34, the flange 35, the cutter head cross beam 4, the first cutter head adjusting rod 41, the second cutter head adjusting rod 42, the third cutter head adjusting rod 43, the length adjusting handle 44, the linear bearing flange 45, the motor driving rod seat 5, the mounting plate 51, the motor driving rod 52, the motor linear bearing 53, the cutter head supporting platform 6, the cooling groove hole 70. Detailed Embodiment

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the drawings. The embodiments of the present utility model shown in the drawings and described according to the drawings are merely exemplary, and the present utility model is not limited to these embodiments.

[0024] Here, it should also be noted that in order to avoid obscuring the present utility model with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present utility model are shown in the drawings, while other details of little relevance are omitted.

[0025] Combined Figure 1 and Figure 2 As shown in the drawings, an embodiment of the present utility model provides a heat-sealing cutter for a bag-making machine, which includes a first heat-sealing cutter head 1, a second heat-sealing cutter head 2, a cutting cutter head 3, a cutter holder cross beam 4, a motor drive rod seat 5 and a knife-bearing table 6.

[0026] A cutting blade 31 for cutting the packaging bag film is fixedly installed at the bottom of the cutting cutter head 3;

[0027] The first heat-sealing cutter head 1 is arranged side by side on one side of the cutting cutter head 3;

[0028] The second heat-sealing cutter head 2 is arranged side by side on the other side of the cutting cutter head 3 facing away from the first heat-sealing cutter head 1;

[0029] The cutter holder cross beam 4 is provided with a first cutter holder adjusting rod 41, a second cutter holder adjusting rod 42 and a third cutter holder adjusting rod 43. The first cutter holder adjusting rod 41 is connected to the first heat-sealing cutter head 1 and is used to control the distance between the first heat-sealing cutter head 1 and the cutter holder cross beam 4 by adjusting the telescopic length. The second cutter holder adjusting rod 42 is connected to the second heat-sealing cutter head 2 and is used to control the distance between the second heat-sealing cutter head 2 and the cutter holder cross beam 4 by adjusting the telescopic length. The third cutter holder adjusting rod 43 is connected to the cutting cutter head 3 and is used to control the distance between the cutting cutter head 3 and the cutter holder cross beam 4 by adjusting the telescopic length;

[0030] The motor drive rod seat 5 includes two mounting plates 51 and motor drive rods 52 respectively installed on the two mounting plates 51. The motor drive rods 52 are connected to the cutter holder cross beam 4 and are used to drive the lifting movement of the cutter holder cross beam 4. The mounting plates 51 are used to be locked and fixed to the body of the bag-making machine, and the fixing method of the relevant components of the heat-sealing cutter of a conventional bag-making machine can be referred to;

[0031] The knife-bearing table 6 is located below the cutter holder cross beam 4 and is fixed between the two mounting plates 51 and is used to engage with the cutting cutter head 3, the first heat-sealing cutter head 1 and the second heat-sealing cutter head 2 after the cutter holder cross beam 4 descends.

[0032] The heat-sealing cutter of the above-mentioned bag-making machine connects the first heat-sealing cutter head 1, the second heat-sealing cutter head 2 and the cutting cutter head 3 to the cutter head cross beam 4 respectively through the first cutter head adjusting rod 41, the second cutter head adjusting rod 42 and the third cutter head adjusting rod 43. The motor drive rod 52 drives the cutter head cross beam 4 to drive the first heat-sealing cutter head 1, the second heat-sealing cutter head 2 and the cutting cutter head 3 to move up and down simultaneously, realizing unified control of the edge-sealing and cutting processes. The first heat-sealing cutter head 1, the second heat-sealing cutter head 2 and the cutting cutter head 3 can each adjust the distance from the cutter head cross beam 4 through the corresponding cutter head adjusting rod, so as to change the height of the cutting edge of the cutter head, thereby realizing separate adjustment of the edge-sealing and cutting processes. The working principle is as follows: when the first heat-sealing cutter head 1 and the cutting cutter head 3 are at the same height and the distances between them and the cutter head cross beam 4 are equal, or when the second heat-sealing cutter head 2 and the cutting cutter head 3 are at the same height, as the cutter head cross beam 4 descends, the cutting cutter head 3 and one of the heat-sealing cutter heads will contact the knife-bearing table 6 simultaneously, realizing synchronous edge-sealing and cutting; when the first heat-sealing cutter head 1 and the second heat-sealing cutter head 2 are at the same height and both are lower than the cutting cutter head 3, two parallel edge-seals can be formed on the plastic film; when the height of the cutting cutter head 3 is lower than that of the first heat-sealing cutter head 1 and the second heat-sealing cutter head 2, separate cutting is realized; when the height of the first heat-sealing cutter head 1 or the second heat-sealing cutter head 2 is lower than the other two, separate edge-sealing is realized; when the first heat-sealing cutter head 1, the second heat-sealing cutter head 2 and the cutting cutter head 3 are at the same height, the bottom edge-sealing of the previous bag body, the mouth edge-sealing of the next bag body and the cutting between the two bag bodies can be realized. Therefore, by using the above first cutter head adjusting rod 41, second cutter head adjusting rod 42 and third cutter head adjusting rod 43, the execution of the edge-sealing and cutting processes can be freely adjusted, making the above heat-sealing cutter more versatile and adaptable to various plastic film operation conditions.

[0033] As Figure 2 and Figure 3 shown, on both sides of the cutting blade 31 of the cutting cutter head 3, two pressure film strips 33 are connected respectively through connecting columns 32. A spring 34 is sleeved on the connecting column 32. The spring 34 abuts against the bottom of the cutting cutter head 3 and the top of the pressure film strip 33. The cutting cutter head 3 is formed with a T-shaped groove 30 that is wider at the top and narrower at the bottom for accommodating the top end of the connecting column 32. The T-shaped groove 30 extends in the height direction, enabling the connecting column 32 to move up and down in the T-shaped groove 30. The upper end of the connecting column 32 forms an outwardly extended nut, making the connecting column 32 form a structure that is wider at the top and narrower at the bottom corresponding to the T-shaped groove 30, preventing the connecting column 32 from slipping out from below the T-shaped groove 30.

[0034] When the cutting tool head 3 descends along with the tool rest crossbeam 4, the film pressing strip 33 can abut against the surface of the plastic film before the cutting blade 31 touches the plastic film. The reaction force of the tool rest 6 on the film pressing strip 33 causes the connecting column 32 to move upward relative to the tool rest 6, compressing the spring 34. The plastic film is firmly pressed on the tool rest 6, ensuring that the plastic film remains stable enough during the cutting operation of the cutting tool head 3, avoiding poor cutting phenomena such as skewed cutting and missed cutting. After the cutting is completed, the tool rest crossbeam 4 drives the cutting tool head 3 to rise and retract. Once the cutting blade 31 rises, it disengages from the contact with the plastic film. Since the spring 34 has not fully returned to its original length, the film pressing strip 33 still firmly presses the plastic film on the tool rest 6 until the connecting column 32 pulls the film pressing strip 33 away from the contact with the plastic film as the tool rest crossbeam 4 continues to rise. This ensures that the plastic film is always pressed and fixed during the cutting process, maintaining production efficiency and improving the operating stability of the bag-making machine.

[0035] Specifically, the bottom surface of the film pressing strip 33 is lower than the height of the cutting blade 31 when the spring 34 is in its original state, so as to ensure that the film pressing strip 33 always contacts the plastic film before the cutting blade 31 and disengages from the surface of the plastic film later than the cutting blade 31.

[0036] Further, a flange 35 extends downward from the bottom of the cutting tool head 3. A tool clamping groove is formed in the flange 35, and the cutting blade 31 is detachably locked in the tool clamping groove by a screw passing through the side surface of the flange 35. Thus, it is convenient to disassemble and replace the cutting blade 31. After a certain period of cutting, problems such as dulling of the cutting blade 31 make it difficult to maintain.

[0037] Length adjustment handles 44 are provided on the first tool rest adjustment rod 41, the second tool rest adjustment rod 42, and the third tool rest adjustment rod 43, enabling operators to conveniently adjust the telescopic length of the rods of the first tool rest adjustment rod 41, the second tool rest adjustment rod 42, and the third tool rest adjustment rod 43 by turning the corresponding length adjustment handles 44. The first tool rest adjustment rod 41, the second tool rest adjustment rod 42, and the third tool rest adjustment rod 43 are locked to the tool rest crossbeam through linear bearing flanges 45, ensuring that each tool rest adjustment rod and the first heat-sealing tool head 1, the second heat-sealing tool head 2, and the cutting tool head 3 connected to their respective lower ends are firmly installed, increasing the force-bearing area and ensuring the structural stability. The distances between the first heat-sealing tool head 1, the second heat-sealing tool head 2, and the cutting tool head 3 can be designed according to the requirements of the bag-making size. The tool rest crossbeam 4 is correspondingly designed with a width banner to provide sufficient space for arranging the first tool rest adjustment rod 41, the second tool rest adjustment rod 42, and the third tool rest adjustment rod 43.

[0038] If the lifting of the tool rest crossbeam 4 is offset, it will cause inaccurate cutting and edge sealing positions, thus affecting the quality of the bags. In this embodiment, the motor drive rod 52 is locked to the mounting plate 51 through a motor linear bearing 53 to keep the tool rest crossbeam 4 moving up and down in a straight line.

[0039] Cooling groove holes 70 are provided on the first heat-sealing cutter head 1, the second heat-sealing cutter head 2, and the cutting cutter head 3, and both ends of the cooling groove holes 70 are circulated with coolant through an external pipeline.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0041] The above are only specific embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A heat-sealing cutter for a bag-making machine, characterized in that, It includes a first heat-sealing cutter head (1), a second heat-sealing cutter head (2), a cutting cutter head (3), a cutter head cross beam (4), a motor drive rod seat (5), and a cutter supporting table (6). A cutting blade (31) for cutting the packaging bag film is fixedly installed at the bottom of the cutting cutter head (3). The first heat-sealing cutter head (1) is arranged side by side on one side of the cutting cutter head (3). The second heat-sealing cutter head (2) is arranged side by side on the other side of the cutting cutter head (3) opposite to the first heat-sealing cutter head (1). A first cutter head adjusting rod (41), a second cutter head adjusting rod (42), and a third cutter head adjusting rod (43) are provided on the cutter head cross beam (4). The first cutter head adjusting rod (41) is connected to the first heat-sealing cutter head (1) and is used to control the distance between the first heat-sealing cutter head (1) and the cutter head cross beam (4) by adjusting the telescopic length. The second cutter head adjusting rod (42) is connected to the second heat-sealing cutter head (2) and is used to control the distance between the second heat-sealing cutter head (2) and the cutter head cross beam (4) by adjusting the telescopic length. The third cutter head adjusting rod (43) is connected to the cutting cutter head (3) and is used to control the distance between the cutting cutter head (3) and the cutter head cross beam (4) by adjusting the telescopic length. The motor drive rod seat (5) includes two mounting plates (51) and motor drive rods (52) respectively installed on the two mounting plates (51). The motor drive rods (52) are connected to the cutter head cross beam (4) and are used to drive the lifting movement of the cutter head cross beam (4). The cutter supporting table (6) is located below the cutter head cross beam (4) and is fixed between the two mounting plates (51) and is used to engage with the cutting cutter head (3), the first heat-sealing cutter head (1), and the second heat-sealing cutter head (2) after the cutter head cross beam (4) descends.

2. The heat-sealing cutter of the bag-making machine according to claim 1, wherein On both sides of the cutting blade (31) of the cutting cutter head (3), two film pressing strips (33) are respectively connected through connecting columns (32). A spring (34) is sleeved on the connecting column (32). The spring (34) abuts against the bottom of the cutting cutter head (3) and the top of the film pressing strip (33). The cutting cutter head (3) is formed with a T-shaped groove (30) corresponding to accommodate the top end of the connecting column (32), so that the connecting column (32) can move up and down in the T-shaped groove (30).

3. The heat-sealing cutter of the bag-making machine according to claim 2, characterized in that, The bottom surface of the film pressing strip (33) is lower than the height where the cutting blade (31) is located when the spring (34) is in the original length state.

4. The heat-sealing cutter of the bag-making machine according to claim 2, characterized in that, A flange (35) extends downward from the bottom of the cutting cutter head (3). A cutter clamping groove is formed in the flange (35). The cutting blade (31) is detachably locked in the cutter clamping groove through a screw penetrating the side surface of the flange (35).

5. The heat-sealing cutter of the bag-making machine according to claim 1, characterized in that, Length adjusting handles (44) are provided on the first cutter head adjusting rod (41), the second cutter head adjusting rod (42), and the third cutter head adjusting rod (43). The first cutter head adjusting rod (41), the second cutter head adjusting rod (42), and the third cutter head adjusting rod (43) are locked on the cutter head cross beam through linear bearing flanges (45).

6. The heat-sealing cutter of the bag-making machine according to claim 1, characterized in that, The motor drive rod (52) is locked on the mounting plate (51) through a motor linear bearing (53).

7. The heat-sealing cutter of the bag-making machine according to claim 1, characterized in that, Cooling groove holes (70) are provided on the first heat-sealing cutter head (1), the second heat-sealing cutter head (2), and the cutting cutter head (3).

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