Sealing and bag pulling device of packaging machine

Abstract

The utility model relates to the field of packaging equipment, in particular to a packaging machine sealing and bag pulling device which comprises a base plate, a guide rail is arranged above the base plate, two sliding blocks are installed on the guide rail, the upper portions of the two sliding blocks are connected with two symmetrically-arranged pneumatic claws through connecting pieces respectively, the two sliding blocks are driven by a driving device to move horizontally, and the two pneumatic claws are connected with the base plate. Edges are arranged on the two sides of the bag, and the pneumatic claws are used for grabbing the edges on the two sides of the bag. Compared with the prior art, the edge of the bag is clamped through the pneumatic claw, the guide rail sliding block mechanism is used for horizontally moving and pulling towards the two sides, a bag opening can be leveled and prevented from wrinkling, and the sealing quality is improved.

Description

Technical Field

[0001] The utility model relates to the field of packaging equipment, in particular to a bag pulling device for sealing a packaging machine. Background Art

[0002] At present, the sealing of packaging bags in the industry adopts the method of upper pressure positioning. Existing technologies such as a packaging machine sealing and trimming device disclosed in the publication number CN221050143U press the bag mouth of the packaging bag through an upper bag pressing mechanism and a lower bag pressing mechanism, and then heat-seal the packaging tape through a heating device. If there are wrinkles at the bag mouth, it will also be directly heat-pressed and sealed, resulting in an uneven seal. Summary of the Invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provides a bag pulling device for sealing a packaging machine.

[0004] To achieve the above object, a bag pulling device for sealing a packaging machine is designed, which includes a substrate. A guide rail is arranged above the substrate, and two sliders are installed on the guide rail. Above the two sliders, two symmetrically arranged air claws are respectively connected through connecting pieces. The two sliders are driven to translate by a driving device. There are edges on both sides of the bag, and the air claws are used to grasp the edges on both sides of the bag.

[0005] The driving device includes a synchronous belt and a servo motor. The synchronous belt is rotatably arranged on both sides of the guide rail through synchronous belt pulleys and is parallel to the guide rail. The two sliders are respectively connected to the synchronous belts on both sides, and the synchronous belt pulleys are driven to rotate by the servo motor.

[0006] The synchronous belt pulleys include a first synchronous belt pulley, a second synchronous belt pulley, and a third synchronous belt pulley. The first synchronous belt pulley and the second synchronous belt pulley are respectively arranged at both ends of the guide rail, and the third synchronous belt pulley is arranged on one side of the guide rail. The synchronous belt is arranged around the outside of the synchronous belt pulleys. The synchronous belt between the first synchronous belt pulley and the second synchronous belt pulley is arranged on one side of the guide rail and is parallel to the guide rail. A guide wheel is arranged on one side of the guide rail, so that a section of the synchronous belt between the first synchronous belt pulley or the second synchronous belt pulley and the third synchronous belt pulley is arranged on the other side of the guide rail and is parallel to the guide rail. The third synchronous belt pulley is driven by the servo motor.

[0007] The servo motor is installed below the substrate.

[0008] The products packaged in the bag are pushed into the bag through a pushing die, and air holes are arranged on both sides of the pushing die.

[0009] Compared with the prior art, the utility model can flatten the bag mouth by clamping the edges of the bag with air claws and using the guide rail slider mechanism to translate and pull the bag to both sides, prevent the bag mouth from wrinkling, and improve the sealing quality. Brief Description of the Drawings

[0010] Figure 1This is a schematic diagram of the present utility model.

[0011] Figure 2 This is a schematic diagram of bag grasping.

[0012] Figure 3 This is a schematic diagram of the pushing die.

[0013] Figure 4 This is a schematic diagram of the sealed state.

[0014] See Figures 1 - 4 , in which, 1 is a pneumatic claw, 2 is a connecting piece, 3 is a guide rail, 4 is a slider, 5 is a substrate, 6 is a synchronous belt, 7 is a servo motor, 8 is a bag, 8-1 is an edge, 9 is a product, 10 is a pushing die, 10-1 is an air blowing hole, 11 is a hot pressing sealing device, 12-1 is a first synchronous belt pulley, 12-2 is a second synchronous belt pulley, 12-3 is a third synchronous belt pulley, and 13 is a guide wheel. Specific embodiments

[0015] The following further describes the present utility model with reference to the accompanying drawings.

[0016] As Figures 1 - 4 shown, a guide rail 3 is provided above a substrate 5, two sliders 4 are installed on the guide rail 3, the upper parts of the two sliders 4 are respectively connected to two symmetrically arranged pneumatic claws 1 through connecting pieces 2, the two sliders 4 are driven to translate by a driving device, edges 8-1 are provided on both sides of a bag 8, and the pneumatic claw 1 is used to grasp the edges 8-1 on both sides of the bag 8. If the process of hot pressing and splicing on both the front and back sides is adopted during the production of the bag 8, edges 8-1 will be left on both sides of the bag 8. By grasping the edges 8-1 of the bag 8 with the pneumatic claw 1 and through the cooperation of the guide rail 3 and the slider 4, the operation is stable. The driving device can be a linear driving mechanism such as a cylinder or an electric cylinder, which drives the pneumatic claw 1 to translate and pull towards both sides, enabling the bag mouth of the bag 8 to be flattened and preventing wrinkles during sealing.

[0017] The driving device includes a synchronous belt 6 and a servo motor 7. The synchronous belt 6 is rotatably arranged on both sides of the guide rail 3 through synchronous belt pulleys and is parallel to the guide rail 3. The two sliders 4 are respectively connected to the synchronous belts 6 on both sides. The synchronous belt pulleys are driven to rotate by the servo motor 7. As Figure 1 shown, the synchronous belt 6 is rotatably arranged on both sides of the guide rail 3 through synchronous belt pulleys and is driven by the servo motor 7 to drive the synchronous belt pulley to drive the synchronous belt 6 to rotate. The running directions of the synchronous belts 6 on both sides of the guide rail 3 are opposite, and the two sliders 4 are respectively connected to the synchronous belts 6 on both sides and can move synchronously towards the inside or the outside.

[0018] The synchronous belt pulleys include synchronous belt pulley 12-1, synchronous belt pulley 12-2, and synchronous belt pulley 12-3. Synchronous belt pulley 12-1 and synchronous belt pulley 12-2 are respectively arranged at both ends of the guide rail 3. Synchronous belt pulley 12-3 is arranged on one side of the guide rail 3. The synchronous belt 6 is arranged around the outer sides of the synchronous belt pulleys. The synchronous belt 6 between synchronous belt pulley 12-1 and synchronous belt pulley 12-2 is arranged on one side of the guide rail 3 and is parallel to the guide rail 3. A guide pulley 13 is provided on one side of the guide rail 3, and the guide pulley 13 makes a section of the synchronous belt 6 between synchronous belt pulley 12-1 or synchronous belt pulley 12-2 and synchronous belt pulley 12-3 be arranged on the other side of the guide rail 3 and be parallel to the guide rail 3. The synchronous belt pulley 12-3 is driven by a servo motor 7. As Figure 1 shown, the servo motor 7 drives the synchronous belt pulley 12-3 to drive the synchronous belt 6 to rotate. The sliders 4 are respectively connected to the parts of the synchronous belt 6 parallel to the guide rail 3 on both sides of the guide rail 3. When the servo motor 7 rotates, the two air grippers 1 can move inwards or outwards synchronously.

[0019] The servo motor 7 is installed below the substrate 5.

[0020] The product 9 packaged in the bag 8 is pushed into the bag by a pushing die 10. Blow holes 10-1 are provided on both sides of the pushing die 10. By blowing air through the blow holes on both sides of the pushing die 10, the edges of the bag 8-1 can be blown out, which is convenient for the air gripper 1 to grab the edges 8-1.

[0021] When the utility model is in use, as Figure 3 shown, the pushing die 10 first pushes the product 9 into the bag. The blow holes 10-1 on both sides of the pushing die 10 blow air to blow out the edges of the bag. The air gripper 1 grabs the edges of the bag 8. The servo motor 7 drives the synchronous belt to rotate, so that the two sliders 4 on the guide rail 3 are linked and pulled to the required positions left and right to avoid wrinkles at the bag mouth. Finally, as Figure 4 shown, a hot pressing and sealing device 11 is arranged on one side of the bag sealing and pulling device. The hot pressing and sealing device 11 presses and heats the bag mouth to complete the sealing of the bag 6.

Claims

1. A bag sealing and pulling device for a packaging machine, characterized in that: The invention comprises a base plate (5), a guide rail (3) is provided above the base plate (5), two sliders (4) are mounted on the guide rail (3), the tops of the two sliders (4) are respectively connected to two symmetrically arranged air grippers (1) via connecting members (2), the two sliders (4) are driven to translate by a driving device, edges (8-1) are provided on both sides of the bag (8), and the air grippers (1) are used to grasp the edges (8-1) on both sides of the bag (8).

2. A bag sealing and pulling device for a packaging machine according to claim 1, characterized in that: The driving device comprises a synchronous belt (6) and a servo motor (7); the synchronous belt (6) is rotatably arranged on both sides of the guide rail (3) through a synchronous pulley and is parallel to the guide rail (3); the two sliders (4) are respectively connected to the synchronous belts (6) on both sides; and the synchronous pulley is driven to rotate by the servo motor (7).

3. A bag sealing and pulling device for a packaging machine according to claim 2, characterized in that: The synchronous pulleys comprise synchronous pulley 1 (12-1), synchronous pulley 2 (12-2) and synchronous pulley 3 (12-3). The synchronous pulley 1 (12-1) and synchronous pulley 2 (12-2) are respectively arranged at two ends of a guide rail (3), the synchronous pulley 3 (12-3) is arranged on one side of the guide rail (3), a synchronous belt (6) is arranged around the outer side of the synchronous pulleys, the synchronous belt (6) between the synchronous pulley 1 (12-1) and the synchronous pulley 2 (12-2) is arranged on one side of the guide rail (3) and is parallel to the guide rail (3), a guide wheel (13) is provided on one side of the guide rail (3), the guide wheel (13) enables a section of the synchronous belt (6) between the synchronous pulley 1 (12-1) or the synchronous pulley 2 (12-2) and the synchronous pulley 3 (12-3) to be arranged on the other side of the guide rail (3) and is parallel to the guide rail (3), and the synchronous pulley 3 (12-3) is driven by a servo motor (7).

4. A bag sealing and pulling device for a packaging machine according to claim 2, characterized in that: The servo motor (7) is installed below the base plate (5).

5. The sealing and bag pulling device of a packaging machine according to claim 1, characterized in that: The product (9) packaged in the bag (8) is pushed into the bag by a pushing mold (10), and blowing holes (10-1) are provided on both sides of the pushing mold (10).

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