Heat sealing cutter mechanism with packaging bag separating function

Abstract

The utility model discloses a heat-sealing cutter mechanism with a packaging bag separating function. The heat-sealing cutter mechanism comprises a heat-sealing cutter body and a separating mechanism installed on the heat-sealing cutter body. After the heat sealing cutter body cuts off the packaging bag, the separating mechanism can push the cut packaging bag away in the advancing direction of the conveying belt. The separating mechanism comprises a connecting piece fixed to the heat sealing cutter body, so that the separating mechanism can synchronously ascend and descend along with the heat sealing cutter body. And when the heat-sealing cutter body descends to cut and seal the packaging bag, the push-away piece descends along with the heat-sealing cutter and can push away the cut packaging bag in the advancing direction of the conveying belt. And when the heat-sealing cutter cuts off the packaging table, the packaging bags on the two sides of the heat-sealing cutter can be melted at the same time, and seals are formed. At the moment, the separating mechanism pushes the cut packaging bag away from the packaging bag by a certain distance, and the packaging bag is prevented from being bonded with the packaging bag behind again.

Description

Technical Field

[0001] The utility model relates to a heat sealing knife for a packaging machine, in particular to a heat sealing knife mechanism with a packaging bag separation function. Background Art

[0002] The packaging machine heat seal knife is a cutting device used on packaging machines, usually used to perform heat sealing and cutting operations on packaging materials. It usually consists of a heating element (such as a hot cutting wire) and a cutter. During the packaging process, when the heating element is activated by electric current, it will generate high temperature to heat the cutter, so that the cutter can quickly heat seal and cut the packaging material.

[0003] Since the heat-sealing knife melts the packaging bags by heating, the cut edges of adjacent packaging bags are prone to stick to each other and fuse together before they cool down, causing trouble for the subsequent sorting process. Utility Model Content

[0004] In view of this, the utility model provides a heat-sealing knife mechanism with a packaging bag separation function, which can push the packaging bag away to avoid re-bonding after the packaging bag is cut and sealed.

[0005] In order to solve the above technical problems, the technical solution of the utility model is to adopt a heat sealing knife mechanism with a packaging bag separation function, including a heat sealing knife body and a separation mechanism installed on the heat sealing knife body; when the heat sealing knife body cuts the packaging bag, the separation mechanism can push the cut packaging bag away in the direction of the conveyor belt;

[0006] The separation mechanism includes a connecting piece fixed on the heat sealing knife body, so that the separation mechanism can be raised and lowered synchronously with the heat sealing knife body; and also includes a pushing piece arranged on the connecting piece. When the heat sealing knife body descends to cut and seal the packaging bag, the pushing piece descends with the heat sealing knife and can push the cut packaging bag away in the direction of the conveyor belt.

[0007] As an improvement, the pushing member is a pushing plate, and the pushing plate pushes the packaging bag away under the drive of the linear driving mechanism.

[0008] As a further improvement, the connecting member is a connecting bracket, and the connecting bracket has a longitudinal long hole; the linear drive mechanism is connected to the long hole by an adjusting bolt.

[0009] As another further improvement, the linear drive mechanism is a cylinder, a connecting plate is provided at the end of the piston rod of the cylinder, two-level connecting rods are provided at both ends of the connecting plate, and the push plate is fixed on two secondary leveling rods.

[0010] As an improvement, it also includes a control solenoid valve for controlling the lifting and lowering of the heat sealing knife and the operation of the conveyor belt; a three-way valve is set at the control solenoid valve to synchronize the solenoid valve control signal to the linear drive mechanism, so that when the heat sealing knife descends, the linear drive mechanism extends forward, and when the conveyor belt runs, the linear drive mechanism retracts.

[0011] As an improvement, the connecting member is a spring sheet, one end of which is connected to the heat sealing knife, and the other end is connected to the pushing member; when the heat sealing knife is in the process of descending, the pushing member contacts the cut packaging bag, causing the spring sheet to yield, thereby changing the angle between the pushing member and the packaging bag, thereby pushing the packaging bag away.

[0012] As an improvement, the elastic sheet and the push-off member are connected by a spring.

[0013] As an improvement, the push-off member is in the shape of an inverted bowl and is made of rubber.

[0014] As an improvement, the push-off member is arranged on the heat sealing knife body at one side of the conveyor belt's direction of travel.

[0015] The utility model is beneficial in that:

[0016] The heat sealing knife mechanism with the above structure can push the cut packaging bag away in the direction of the conveyor belt after the heat sealing knife body cuts off the packaging bag; the separation mechanism includes a connecting piece fixed on the heat sealing knife body, so that the separation mechanism can be raised and lowered synchronously with the heat sealing knife body; and also includes a push-off piece arranged on the connecting piece, when the heat sealing knife body descends to cut and seal the packaging bag, the push-off piece descends with the heat sealing knife and can push the cut packaging bag away in the direction of the conveyor belt. When the heat sealing knife cuts off the packaging platform, it will melt the packaging bags on both sides at the same time and form a seal. At this time, the separation mechanism pushes the cut packaging bag away for a distance to avoid re-bonding with the packaging bag behind. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of Example 1.

[0018] Figure 2 This is a working status diagram of Example 1.

[0019] Figure 3 Schematic diagram of the linear drive mechanism in Example 1.

[0020] Figure 4 This is a structural diagram of Example 2.

[0021] Figure 5 This is a structural diagram of Example 2.

[0022] Markings in the figure: 1 heat sealing knife body, 2 connecting bracket, 3 cylinder, 4 connecting plate, 5 secondary connecting rod, 6 push plate, 7 spring, 8 spring, 9 push-off member. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0024] The utility model provides a heat sealing knife mechanism with a packaging bag separation function, comprising a heat sealing knife body 1 and a separation mechanism installed on the heat sealing knife body; when the heat sealing knife body 1 cuts off the packaging bag, the separation mechanism can push the cut packaging bag away in the direction of the conveyor belt;

[0025] The separation mechanism includes a connecting piece fixed on the heat sealing knife body 1, so that the separation mechanism can be raised and lowered synchronously with the heat sealing knife body 1; it also includes a pushing piece arranged on the connecting piece. When the heat sealing knife body 1 descends to cut and seal the packaging bag, the pushing piece descends with the heat sealing knife and can push the cut packaging bag away in the direction of the conveyor belt.

[0026] The principle of the utility model is that when the heat sealing knife cuts off the packaging platform, the packaging bags on both sides thereof will be melted and sealed at the same time. At this time, the separation mechanism pushes the cut packaging bag away for a distance to avoid re-bonding with the packaging bag behind.

[0027] Example 1

[0028] This embodiment provides an implementation method that requires an additional power source.

[0029] like Figure 1 , Figure 2 As shown, the push-off member is a push plate 6, and the push plate 6 pushes the packaging bag away under the drive of the linear drive mechanism. The linear drive mechanism can be linearly extended and retracted. It can be understood that when the linear mechanism is extended, the push plate 6 can push the cut packaging bag forward for a distance, thereby separating it from the packaging bag behind to avoid the two re-merging and bonding.

[0030] like Figure 3As shown, more specifically, the linear drive mechanism is a cylinder 3, a connecting plate 4 is provided at the end of the piston rod of the cylinder, two secondary connecting rods 5 are provided at both ends of the connecting plate 4, and the push plate 6 is fixed on the two secondary leveling rods 5. In order to improve the pushing efficiency and avoid damaging the packaging bag, the length of the push plate 6 needs to be long enough. However, the cylinder 3 used for driving is generally not too large, so directly installing a push plate 6 that is too long is not very stable. Therefore, in this embodiment, the piston rod of the cylinder 3 is first connected to a connecting plate 4, and then two secondary connecting rods 5 are respectively provided at both ends of the connecting plate 4. The span between the two secondary connecting rods 5 is sufficient to install the push plate 6, so that the push plate 6 is more secure and avoids shaking.

[0031] In addition, the connecting member is a connecting bracket 2, and the connecting bracket 2 has a longitudinal long hole; the linear drive mechanism is connected to the long hole by an adjusting bolt. The purpose is to adjust the vertical position and pitch angle of the linear drive mechanism so that the packaging bag can be effectively pushed away while avoiding damage to the packaging table.

[0032] In this embodiment, a control solenoid valve for controlling the lifting and lowering of the heat sealing knife body 1 and the operation of the conveyor belt is also included; a three-way valve is set at the control solenoid valve to synchronize the solenoid valve control signal to the linear drive mechanism, so that when the heat sealing knife body 1 descends, the linear drive mechanism extends forward, and when the conveyor belt runs, the linear drive mechanism retracts. The cylinder 3 is linked with the heat sealing knife body 1 and the conveyor belt. When the heat sealing knife body 1 descends, the cylinder 3 extends to push the packaging bag. When the heat sealing knife body 1 rises, the cylinder does not retract, thereby avoiding pulling the packaging bag back again. When the heat sealing knife body 1 rises to the position and the conveyor belt runs, it means that the cut packaging bag has been transported away, and the cylinder 3 retracts at this time.

[0033] Example 2

[0034] This embodiment provides an implementation method that does not require an additional power source.

[0035] like Figure 4 , Figure 5 As shown, the connecting member is a spring sheet 7, one end of which is connected to the heat sealing knife body 1, and the other end is connected to the push-off member; when the heat sealing knife body 1 is in the process of descending, the push-off member 9 contacts the cut packaging bag, causing the spring sheet 7 to yield, thereby changing the angle between the push-off member 9 and the packaging bag, thereby pushing the packaging bag away. During the descent of the heat sealing knife body 1, the push-off member 9 contacts the packaging bag in advance. As the heat sealing knife body 1 continues to descend, the spring sheet 7 is gradually yielded and bent into a U-shape with high sides and low middle, so that the angle of the push-off member 9, which was originally perpendicular to the packaging bag, also changes, thereby pushing the packaging bag away. During the ascent of the heat sealing knife body 1, the spring sheet 7 is restored, and the push-off member 9 also returns to its position.

[0036] The spring 7 is connected to the push-off member 9 by a spring 8. The spring 8 also yields to a certain extent during the pressing process, thereby increasing the distance of the push-off.

[0037] The push-off member 9 is in the shape of an inverted bowl and is made of rubber to avoid damaging the packaging bag.

[0038] It can be understood that the push-off member 9 is arranged on the heat-sealing knife body 1 at one side of the conveyor belt's direction, so that the cut packaging bags are pushed away in a direction away from the remaining packaging bags.

[0039] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A heat-sealing knife mechanism with packaging bag separation function, characterized in that: It includes a heat sealing knife body and a separation mechanism installed on the heat sealing knife body; when the heat sealing knife body cuts off the packaging bag, the separation mechanism can push the cut packaging bag away from the conveyor belt. The separation mechanism includes a connecting piece fixed on the heat sealing knife body, so that the separation mechanism can be raised and lowered synchronously with the heat sealing knife body; and also includes a pushing piece arranged on the connecting piece. When the heat sealing knife body descends to cut and seal the packaging bag, the pushing piece descends with the heat sealing knife and can push the cut packaging bag away in the direction of the conveyor belt.

2. The heat-sealing knife mechanism with packaging bag separation function according to claim 1, characterized in that: The pushing member is a pushing plate, and the pushing plate pushes the packaging bag away under the drive of the linear driving mechanism.

3. The heat-sealing knife mechanism with packaging bag separation function according to claim 2, characterized in that: The connecting piece is a connecting bracket, and the connecting bracket has a longitudinal long hole; the linear drive mechanism is connected to the long hole by an adjusting bolt.

4. The heat-sealing knife mechanism with packaging bag separation function according to claim 2, characterized in that: The linear drive mechanism is a cylinder, a connecting plate is provided at the end of the piston rod of the cylinder, two-level connecting rods are provided at both ends of the connecting plate, and the push plate is fixed on two secondary leveling rods.

5. The heat-sealing knife mechanism with packaging bag separation function according to claim 2, characterized in that: It also includes a control solenoid valve for controlling the lifting and lowering of the heat sealing knife body and the operation of the conveyor belt; a three-way valve is set at the control solenoid valve to synchronize the solenoid valve control signal to the linear drive mechanism, so that when the heat sealing knife body descends, the linear drive mechanism extends forward, and when the conveyor belt runs, the linear drive mechanism retracts.

6. The heat-sealing knife mechanism with packaging bag separation function according to claim 1, characterized in that: The connecting member is a spring sheet, one end of which is connected to the heat sealing knife, and the other end is connected to the push-off member; when the heat sealing knife body is in the process of descending, the push-off member contacts the cut packaging bag, causing the spring sheet to yield, thereby changing the angle between the push-off member and the packaging bag, thereby pushing the packaging bag away.

7. The heat-sealing knife mechanism with packaging bag separation function according to claim 6, characterized in that: The elastic sheet is connected to the push-off member by a spring.

8. The heat-sealing knife mechanism with packaging bag separation function according to claim 6, characterized in that: The push-off member is in an inverted bowl shape and is made of rubber.

9. The heat-sealing knife mechanism with packaging bag separation function according to claim 6, characterized in that: The push-off member is arranged on the heat sealing knife body and is located on one side of the conveyor belt's moving direction.

Images