Auxiliary material feeding, ironing and connecting mechanism of bag making machine

Abstract

The utility model discloses a bag making machine accessory feeding ironing connection mechanism which comprises an accessory conveying mechanism and a heat sealing cutter, the accessory conveying mechanism comprises a first motor and a synchronous belt, a grabbing mechanism is arranged on the synchronous belt, the synchronous belt is arranged in the length direction of the heat sealing cutter, and the grabbing mechanism is arranged on the synchronous belt. The grabbing mechanism is used for grabbing auxiliary materials and conveying the auxiliary materials to a designated position on the lower portion of the heat-sealing cutter under driving of the first motor and the synchronous belt, adhesion of the auxiliary materials and the main materials is completed through hot connection of the heat-sealing cutter, the grabbing mechanism capable of reciprocating is additionally arranged on the upper portion of the heat-sealing cutter, and the main materials pass through the middle of the heat-sealing cutter. Then the grabbing mechanism grabs and conveys the auxiliary materials to a designated position, then the main materials and the auxiliary materials are connected in an ironing mode through the heat sealing cutter, then the auxiliary materials are conveyed forwards along with the main materials to complete follow-up operation, and in this way, the problems of conveying and ironing connection of the main materials and the auxiliary materials can be solved correspondingly.

Description

Technical Field

[0001] The utility model relates to the technical field of bag making machines, in particular to an auxiliary material feeding and hot-joining mechanism for bag making machines. Background Art

[0002] Plastic bag making machines are automated mechanical equipment that cuts and glues plastic films into shape. Existing bag making machines usually produce plastic bags with only two sides, the front and back. This type of product has a relatively simple structure, and the corresponding bag making equipment is also relatively simple. With customer demand, plastic bags with sides are becoming increasingly popular in the market because they can be expanded to accommodate more items.

[0003] Generally, plastic bags with side edges are formed by heat-sealing the main material on the front and back sides and the corresponding auxiliary materials on the side edges. The corresponding bag-making machine needs to have the function of transporting the auxiliary materials to the main material conveyor line and completing the pre-positioning of the main and auxiliary materials. However, most bag-making machines at this stage only have the main material conveyor line, and how to transport the auxiliary materials to the designated position and complete the hot-sealing of the main and auxiliary materials is the main problem that needs to be solved at this stage. Utility Model Content

[0004] (1) Technical solution

[0005] In order to solve the above technical problems, the utility model provides an auxiliary material feeding and hot-joining mechanism for a bag-making machine.

[0006] The specific technical solutions are:

[0007] The bag-making machine's auxiliary material feeding and hot-joining mechanism includes an auxiliary material conveying mechanism and a heat-sealing knife. The auxiliary material conveying mechanism includes a first motor and a synchronous belt. The synchronous belt is provided with a gripping mechanism. The synchronous belt is arranged along the length of the heat-sealing knife. The gripping mechanism is used to grip the auxiliary material and, driven by the first motor and the synchronous belt, transport it to a designated position below the heat-sealing knife. The auxiliary material and the main material are then joined by hot-joining with the heat-sealing knife.

[0008] The grabbing mechanism includes a mounting seat, the synchronous belt is fixed on the mounting seat, a group of fixed plates are connected to the mounting seat on both sides through connecting columns, a group of fixed plates are provided with cylinders facing inward, an upper pressure plate is provided at the head end of the cylinder, and a lower pressure plate cooperating with the upper pressure plate is provided at the bottom of the fixed plate, and the upper pressure plate and the lower pressure plate are driven by the cylinder to move relative to each other to achieve the clamping and loosening of the auxiliary materials.

[0009] Furthermore, there are two connecting columns, and both ends of the two connecting columns pass through a group of fixed plates. Expansion gaps are provided on the fixed plates, and locking bolts are provided at positions corresponding to the expansion gaps. By loosening the locking bolts, the fixed plates can slide axially on the connecting columns.

[0010] Furthermore, a rubber pad is provided on the upper portion of the lower pressing plate.

[0011] Furthermore, it also includes a linear guide rail, which is fixed on the heat sealing knife, and the mounting seat is fixed on the slide seat of the linear guide rail, and the guide rail is arranged along the length direction of the heat sealing knife.

[0012] Furthermore, the heat sealing knife includes a fixed knife and a movable knife, and the lower part of the movable knife is connected to a driving mechanism for driving the movable knife to reciprocate.

[0013] Furthermore, the driving mechanism includes a second motor, a transmission shaft, a crank connecting rod, a connecting plate, a guide column and a spring. The second motor and the transmission shaft are driven by a synchronous belt. Crank connecting rods are provided at both ends of the transmission shaft. The upper parts of the two crank connecting rods are connected to the connecting plate. The connecting plate is connected to the movable knife through the guide column. The spring is also provided between the connecting plate and the movable knife.

[0014] Furthermore, the crank connecting rod is also connected to a guide rail slider that limits the movement direction of the connecting rod.

[0015] (2) Beneficial effects

[0016] Compared with the existing technology, the technical solution proposed by the utility model is to add a reciprocating grabbing mechanism on the upper part of the heat sealing knife. The main material passes through the middle of the heat sealing knife, and then the grabbing mechanism grabs the auxiliary material and transports it to the designated position. The main material and the auxiliary material are then heat-joined by the heat sealing knife, and then the auxiliary material is transported forward together with the main material to complete the subsequent operations. In this way, the corresponding problems of conveying and heat-joining the main material and the auxiliary material can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the utility model.

[0019] Figure 2 This is a partial enlarged view of part A.

[0020] Figure 3 A top view of the grabbing mechanism.

[0021] Figure 4 It is a side view of the grabbing mechanism. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the utility model, in conjunction with the accompanying drawings. The described embodiments are only part of the embodiments of the utility model, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making any creative efforts are within the scope of protection of the utility model.

[0023] In the relevant existing technologies, plastic bags with side edges are generally formed by heat-sealing the main materials on the front and back sides and the auxiliary materials corresponding to the side edges. The corresponding bag-making machine needs to have the function of transporting the auxiliary materials to the conveying line of the main material and completing the pre-positioning of the main material and the auxiliary materials. However, most bag-making machines at this stage only have a main material conveying line, and how to transport the auxiliary materials to the designated position and complete the hot-joining of the main material and the auxiliary materials is the main problem that needs to be solved at this stage.

[0024] In order to solve the problems existing in the related prior art, the present invention proposes a feeding and hot-joining mechanism for auxiliary materials of a bag-making machine. The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0025] See also Figures 1 to 4 The utility model proposes an auxiliary material feeding and hot-joining mechanism for a bag-making machine, including an auxiliary material conveying mechanism and a heat-sealing knife. The auxiliary material conveying mechanism includes a first motor 1 and a synchronous belt 2. The first motor 1 drives the synchronous belt 2 to move. A grabbing mechanism is provided on the synchronous belt 2. The synchronous belt 2 is arranged along the length direction of the heat-sealing knife, thereby enabling the first motor 1 to drive the grabbing mechanism to move forward or backward along the length direction of the heat-sealing knife. The grabbing mechanism is used to grab the auxiliary material and transport it to a designated position under the heat-sealing knife under the drive of the first motor 1 and the synchronous belt 2. The designated position can be achieved by setting and adjusting the first motor 1, and the auxiliary material and the main material are adhered by the heat-sealing knife.

[0026] Specifically, the grabbing mechanism includes a mounting base 3, a synchronous belt 2 is fixed on the mounting base 3, and a group of fixing plates 5 are connected to the mounting base 3 on both sides through connecting columns 4. A group of fixing plates 5 are provided with cylinders 6 facing inward, and an upper pressure plate 7 is provided at the end of the cylinder 6. A lower pressure plate 8 cooperating with the upper pressure plate 7 is provided at the bottom of the fixing plate 5. The upper pressure plate 7 and the lower pressure plate 8 are driven by the cylinder 6 to move relative to each other to achieve the clamping and loosening of the auxiliary material. Specifically, the main material moves along the thickness direction of the heat sealing knife and is fed in from the length direction of the heat sealing knife. The two groups of upper and lower pressure plates cooperate with each other to clamp the two sides of one end of the auxiliary material, and then the first motor 1 drives the grabbing mechanism to move, so as to pull the auxiliary material to the heat sealing knife hot-joining position for hot-joining. After the hot-joining is completed, the main material continues to move forward, and the first motor 1 drives the grabbing mechanism to re-grab the auxiliary material and feed it in.

[0027] Specifically, there are two connecting columns 4, and both ends of the two connecting columns 4 pass through a group of fixed plates 5. An expansion joint is provided on the fixed plate 5, and a locking bolt 9 is provided at a position corresponding to the expansion joint. By loosening the locking bolt 9, the fixed plate 5 can slide axially on the connecting column 4. The fixed plate 5 can slide axially on the connecting shaft 4 to adjust the distance between the two cylinders. Because the width of the auxiliary materials of different types of plastic bags is different, adjusting the width can ensure that the auxiliary materials are in a taut state to prevent wrinkles from occurring due to ironing in a relaxed state. At the same time, a rubber pad 10 is provided on the upper part of the lower pressure plate 8 to prevent loosening.

[0028] It also includes a linear guide rail 11, which is fixed on the heat sealing knife, and the mounting seat 3 is fixed on the slide of the linear guide rail 11. The guide rail part of the linear guide rail 11 is arranged along the length direction of the heat sealing knife, and the movement is completed by the synchronous belt 2, and the limitation is completed by the linear guide rail 11, which can ensure smooth operation and prevent relative shaking.

[0029] The heat sealing knife includes a fixed knife 12 and a movable knife 13. The linear guide 11 is fixed above the fixed knife 12. At the same time, the first motor 1 and the synchronous belt 2 are also fixed above the fixed knife 12. The grabbing mechanism corresponds to the middle gap position between the fixed knife 12 and the movable knife 13 to ensure that the grabbing mechanism grabs the auxiliary material and transports it to the middle of the fixed knife 12 and the movable knife 13. The lower part of the movable knife 13 is connected to a driving mechanism that drives the movable knife 13 to reciprocate. The driving mechanism includes a second motor 14, a transmission shaft 15, a crank connecting rod 16, a connecting plate 17, a guide column 18 and a spring 19. The second motor 14 and the transmission shaft 15 are driven by a synchronous belt. A crank connecting rod 16 is provided at both ends of the transmission shaft 15. The upper parts of the two crank connecting rods 16 are connected to the connecting plate 17. The connecting plate 17 is connected to the movable knife 13 through the guide column 18. The spring 19 is also provided between the connecting plate 17 and the movable knife 13. The crank connecting rod 16 is also connected to a guide rail slider 20 that limits the movement direction of the connecting rod. 4 and the transmission shaft 15 drive the crank connecting rod 16 to move, thereby driving the movable knife 13 connected to the connecting plate 17 to reciprocate up and down. When the movable knife 13 and the fixed knife 12 are pressed and contacted, the hot sealing is completed. After release, the main material moves forward and the auxiliary material is re-introduced, and then the hot sealing is repeated. The spring 19 and the guide column 18 are provided to achieve soft contact between the fixed knife 12 and the movable knife 13 to prevent the main material from being damaged or the heat sealing knife from being damaged due to rigid contact. The guide rail slider 20 is used to ensure that the movable knife 13 always moves in the up and down direction to ensure alignment.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. The feeding and hot-joining mechanism of the auxiliary materials of the bag making machine is characterized by: The invention comprises an auxiliary material conveying mechanism and a heat sealing knife, wherein the auxiliary material conveying mechanism comprises a first motor (1) and a synchronous belt (2), a grabbing mechanism is provided on the synchronous belt (2), and the synchronous belt (2) is arranged along the length direction of the heat sealing knife. The grabbing mechanism is used to grab the auxiliary material and transport it to a designated position below the heat sealing knife under the drive of the first motor (1) and the synchronous belt (2), and the auxiliary material and the main material are bonded together by the heat sealing knife; The grabbing mechanism includes a mounting seat (3), the synchronous belt (2) is fixed on the mounting seat (3), a group of fixed plates (5) are connected to both sides of the mounting seat (3) through connecting columns (4), a group of fixed plates (5) are provided with cylinders (6) facing inward, an upper pressure plate (7) is provided at the end of the cylinder (6), and a lower pressure plate (8) cooperating with the upper pressure plate (7) is provided at the bottom of the fixing plate (5), and the upper pressure plate (7) and the lower pressure plate (8) are driven by the cylinder (6) to move relative to each other to achieve the clamping and loosening of the auxiliary material.

2. The auxiliary material feeding and hot-joining mechanism for bag making machine according to claim 1, characterized in that: There are two connecting columns (4), and both ends of the two connecting columns (4) pass through a set of fixing plates (5). An expansion joint is provided on the fixing plate (5), and a locking bolt (9) is provided at a position corresponding to the expansion joint. By loosening the locking bolt (9), the fixing plate (5) can slide in the axial direction of the connecting column (4).

3. The auxiliary material feeding and hot-joining mechanism for bag-making machine according to claim 1, characterized in that: A rubber pad (10) is provided on the upper portion of the lower pressing plate (8).

4. The auxiliary material feeding and hot-joining mechanism for a bag-making machine according to claim 1, characterized in that: It also includes a linear guide rail (11), the linear guide rail (11) is fixed on the heat sealing knife, and the mounting seat (3) is fixed on the slide seat of the linear guide rail (11), and the guide rail portion of the linear guide rail (11) is arranged along the length direction of the heat sealing knife.

5. The auxiliary material feeding and hot-joining mechanism for a bag-making machine according to claim 1, characterized in that: The heat sealing knife comprises a fixed knife (12) and a movable knife (13); the lower part of the movable knife (13) is connected to a driving mechanism for driving the movable knife (13) to reciprocate.

6. The auxiliary material feeding and hot-joining mechanism for bag-making machine according to claim 5, characterized in that: The driving mechanism comprises a second motor (14), a transmission shaft (15), a crank connecting rod (16), a connecting plate (17), a guide column (18) and a spring (19); the second motor (14) and the transmission shaft (15) are driven by a synchronous belt; crank connecting rods (16) are provided at both ends of the transmission shaft (15); the upper parts of the two crank connecting rods (16) are connected to the connecting plate (17); the connecting plate (17) and the movable knife (13) are connected through the guide column (18); and the spring (19) is also provided between the connecting plate (17) and the movable knife (13).

7. The auxiliary material feeding and hot-joining mechanism for a bag-making machine according to claim 6, characterized in that: The crank connecting rod (16) is also connected to a guide rail slider (20) for limiting the movement direction of the connecting rod.

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