Package sealing mechanism of vertical packaging machine

Abstract

The utility model relates to the field of packaging machinery, and discloses a package sealing mechanism of a vertical packaging machine, which comprises a heat sealing device, a feeding station and a bag body clamping and moving device, and the heat sealing device comprises a sealing head for sealing a packaging bag; the bag body clamping and moving device is arranged below the feeding station and further provided with a power source enabling a clamping plate to move up and down, the clamping plate clamps a plastic bag filled with materials when ascending to the feeding station, and when the clamping plate descends to the low position, a top bag opening of the plastic bag can be located at a heat sealing head of the heat sealing device. And the clamping plate shuttles back and forth in a receding channel formed by the heat sealing head, and finally the plastic bag containing the materials is subjected to heat sealing at the second position clamped by the clamping plate. The bag body is fixed through the clamping and moving device in the whole process from the time when a material bag enters a plastic bag to the time when a bag opening is sealed, so that the bag surface of the plastic bag is flatly sealed, and bottom wrinkles caused by the fact that a traditional check block drags the bag bottom are avoided.

Description

Technical Field

[0001] The utility model relates to the field of packaging machinery, in particular to a packaging sealing mechanism of a vertical packaging machine. Background Art

[0002] Vertical packaging machines generally work in a way of feeding from the top and sealing from the bottom, such as the Chinese utility model patent with publication number CN217730958U, which is named as a sheet material automatic packaging equipment. As shown in Figure 15, the sealing device is located below the bag body opening device, and a guide plate is arranged at the bottom of the sealing device. The inner surface of the guide plate forms an output channel. The sealing head is arranged at the upper entrance position of the guide plate. The sealing device is also provided with a bag body block for blocking the output channel. A through groove is arranged on the guide plate for the bag body block to be extended and retracted. The bag body block can be extended and retracted along the through groove inside and outside and can be adjusted up and down. The function of the bag body block is to support the bag body containing the material, and then the upper sealing head is sealed in the state where the bag body is supported. However, the bag body of this structure has a heavy material and the bag body itself is made of flexible material, so the bottom will be bent or even wrinkled. The bending or wrinkling of the bottom of the bag body will cause the bag mouth to deform. The uneven bag body or uneven bag mouth will lead to poor sealing quality, which will produce waste. Therefore, a vertical packaging bag bagging machine is urgently needed to solve the problem of poor sealing quality. Utility Model Content

[0003] The utility model aims at the shortcomings of the prior art and provides a sealing mechanism for a vertical packaging machine.

[0004] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0005] The sealing mechanism of the vertical packaging machine includes a heat sealing device, a feeding station, and a bag clamping and moving device. The heat sealing device includes a sealing head for sealing the packaging bag. The feeding station is located above the heat sealing device and is used to feed the material into the opened packaging bag. The bag clamping and moving device is arranged below the feeding station. The bag clamping and moving device is provided with a clamping plate and a power source that can close or separate the clamping plate. The bag clamping and moving device is also provided with a power source that can move the clamping plate up and down. When the clamping plate rises to the feeding station, it clamps the plastic bag filled with the material, which is the first position at this moment. When the clamping plate descends to the lowest position, the top bag opening of the plastic bag can be located at the heat sealing head of the heat sealing device, which is the second position at this moment. The clamping plate shuttles in the clearance channel formed by the heat sealing head, and finally the plastic bag filled with the material is heat-sealed at the second position clamped by the clamping plate.

[0006] Preferably, the heat-sealing head has a power source to drive it to close or separate horizontally. The heat-sealing device further includes a retaining plate that moves synchronously with the heat-sealing head to close, or moves towards the plastic bag earlier than the heat-sealing head during heat-sealing. There is a relief groove in the middle of the retaining plate to accommodate the clamping plate, so that when the heat-sealing head closes, both the retaining plate and the clamping plate are in contact with the outer surface of the plastic bag. The clamping plate and the retaining plate are in full contact, increasing the contact surface on both sides of the plastic bag. The cooperative design of the clamping plate and the retaining plate ensures uniform force on the heat-sealing area and can also expel the air in the packaging bag, further improving the sealing effect.

[0007] Preferably, the widths of the closed clamping plates are different. Among them, the narrower clamping plate extends into the relief groove of the retaining plate when the heat-sealing head closes. The clamping surface formed by the cooperation of the narrower clamping plate and the retaining plate cooperates with the clamping surface on the inner side of the wider clamping plate on the other side to clamp the plastic bag.

[0008] Preferably, the bag body clamping and moving device includes a mounting base. A cross beam is arranged on the mounting base, and the clamping plate is fixed on the cross beam. The mounting base is connected with a power source to drive it to move up and down.

[0009] Due to the adoption of the above technical solutions, the utility model has remarkable technical effects:

[0010] During the process from when the material bag enters the plastic bag to when the bag mouth is sealed, the bag body is fixed throughout by the clamping and moving device, so that the plastic bag surface is flatly sealed, avoiding the bottom wrinkles caused by the traditional stopper dragging the bag bottom, reducing the rejection rate, and thus reducing the cost;

[0011] During the process of shaping the packaging bag containing materials, the clamping and moving device is used to move the packaging bag containing materials to the lower working station for sealing at the same time, which can be completed without an additional conveying device, with a simple structure and high working efficiency. Brief Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the utility model;

[0013] Figure 2 is a schematic structural diagram of the heat-sealing device;

[0014] Figure 3 is a schematic structural diagram of the bag body clamping and moving device;

[0015] Figure 4 is a schematic structural diagram of the bag body clamping and moving device from another angle.

[0016] The names of the parts referred to by the above numerical labels in the drawings are as follows: Among them, 61, clamping plate; 62, mounting base; 63, cross beam; 71, heat-sealing head; 72, retaining plate; 721, relief groove; 81, guide plate; 82, discharge conveyor belt. Detailed Description of the Preferred Embodiments

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] Example 1

[0019] The sealing mechanism of the vertical packaging machine, such as Figures 1-4 As shown, the sealing mechanism of the vertical packaging machine includes a heat sealing device, a feeding station, and a bag clamping and moving device. The heat sealing device includes a sealing head for sealing the packaging bag. The feeding station is located above the heat sealing device and is used to feed the material into the opened packaging bag. The bag clamping and moving device is arranged below the feeding station. The bag clamping and moving device is provided with a clamping plate and a power source that can close or separate the clamping plate. The bag clamping and moving device is also provided with a power source that can move the clamping plate up and down. When the clamping plate rises to the feeding station, it clamps the plastic bag filled with the material. This is the first position. When the clamping plate descends to the lowest position, the top bag opening of the plastic bag can be located at the heat sealing head of the heat sealing device. This is the second position. The clamping plate shuttles in the yield channel formed by the heat sealing head, and finally the plastic bag filled with the material is heat-sealed at the second position clamped by the clamping plate. The bag feeding method of the feeding station is to feed the material from the top into the bag opened below, which will not be elaborated here.

[0020] A bag clamping and moving device is also provided below the feeding station. The bag clamping and moving device is provided with a clamping plate 61 and a power source that can close or separate the clamping plate 61. The device is also provided with a power source that can move the clamping plate 61 up and down. When the clamping plate 61 rises to a high position, it clamps the plastic bag that has been filled with materials. This moment is the first position. When the clamping plate 61 descends to a low position, the top bag opening of the plastic bag can be located at the heat sealing head 71 of the heat sealing device. This moment is the second position. The clamping plate 61 shuttles through the make way channel formed by the heat sealing head 71, and finally the plastic bag filled with materials is heat-sealed at the second position clamped by the clamping plate 61.

[0021] The heat sealing head 71 has a power source that drives it to close or separate horizontally. The heat sealing device also includes a retaining plate 72. The retaining plate 72 moves synchronously with the heat sealing head 71, or moves toward the plastic bag earlier than the heat sealing head 71 during heat sealing. The retaining plate 72 has a recess 721 in the middle to accommodate the clamping plate 61, so that when the heat sealing head 71 is closed, the retaining plate 72 and the clamping plate 61 are in contact with the outer surface of the plastic bag.

[0022] like Figures 3-4 As shown, the widths of the clamps 61 on both sides are different. The heat sealing head 71 of the narrower clamp 61 extends into the clearance groove 721 of the retaining plate 72 when closed. The narrower clamp 61 cooperates with the retaining plate 72 and the wider clamp 61 on the other side to clamp the plastic bag.

[0023] The bag body clamping and moving device includes a mounting seat 62, a cross beam 63 is arranged on the mounting seat 62, a clamping plate 61 is fixed on the cross beam 63, and the mounting seat 62 is connected with a power source for driving it to move up and down. As one implementation manner, the bag body clamping and moving device includes a mounting seat 62, at least two cross beams 63 are arranged on the mounting seat 62, the clamping plates 61 on both sides are respectively fixed on the cross beams 63 on both sides, and the cross beams 63 on both sides are respectively connected with a power source for driving the two to move towards or away from each other to make the clamping plates 61 close or separate, and the mounting seat 62 is connected with a power source for driving it to move up and down. As another implementation manner, the bag body clamping and moving device includes a mounting seat 62, and a cross beam 63 is arranged on the mounting seat 62. The clamping plate 61 on one side of the two sides is fixed on the cross beam 63, and the cross beam 63 is connected with a power source for making the clamping plate 61 on this side approach or move away from the other side. The mounting seat 62 is connected with a power source for driving it to move up and down or the cross beam 63 is connected with a power source for driving it to move up and down. The clamping plates 61 on both sides need to realize lifting, and the up and down power sources can be one or power sources are respectively arranged.

[0024] Working principle: The power source drives the clamping plate 61 to rise to the feeding station, fits on both sides of the plastic bag filled with materials, clamps the plastic bag to keep its shape. At this time, the heat sealers on both sides are in a separated state so that the clamping plate can move up and down. After the clamping device rises and closes to clamp the bag body at the first position and then descends to the heat sealing position at the second position, when the bag mouth reaches the corresponding position of the heat sealer, the heat sealers close to each other to seal the bag mouth.

[0025] The clamping plates on both sides can be selected to have the same shape and cooperate with each other to hold and clamp both sides of the plastic bag. They can also have different shapes, one wide and one narrow. A holding plate 72 is arranged below the heat sealer 71 to assist the clamping plate to increase the contact surface with the packaging bag. When the heat sealer 71 closes, the clamping plate 61 is embedded in the holding plate groove and flattens the bag mouth together with the wide clamping plate 61 to complete the sealing. After packaging, the materials are sent out and collected through the lower conveyor belt 82.

[0026] The power source mentioned in the present utility model includes a power source for linear motion, which are conventional devices in the field such as motor screw rods, motor synchronous belts, cylinders, electric cylinders, etc. They are directly connected to the corresponding devices for driving or can be further indirectly transmitted through components such as synchronous belts, screw rods, synchronous wheels, connecting rods, cams, etc., which will not be elaborated here.

[0027] In conclusion, the above are only the preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model shall fall within the scope covered by the patent of the present utility model.

Claims

1. The sealing mechanism of the vertical packaging machine is characterized by: include A heat sealing device, comprising a sealing head (71) for sealing the packaging bag; The feeding station is located above the heat sealing device and is used to feed the material into the opened packaging bag; The bag body clamping and moving device is arranged below the feeding station. The bag body clamping and moving device is provided with a clamping plate (61) and a power source that can close or separate the clamping plate (61). The bag body clamping and moving device is also provided with a power source that can move the clamping plate (61) up and down. When the clamping plate (61) rises to the feeding station, it clamps the plastic bag that has been filled with materials. This moment is the first position. When the clamping plate (61) descends to a lower position, the top bag opening of the plastic bag can be located at the heat sealing head (71) of the heat sealing device. This moment is the second position. The clamping plate (61) shuttles in the yield channel formed by the heat sealing head (71), and finally the plastic bag filled with materials is heat-sealed at the second position clamped by the clamping plate (61).

2. The package sealing mechanism of the vertical packaging machine according to claim 1, characterized in that: The heat sealing head (71) has a power source for driving it to close or separate horizontally. The heat sealing device also includes a retaining plate (72). The retaining plate (72) moves to close synchronously with the heat sealing head (71), or moves toward the plastic bag earlier than the heat sealing head (71) during heat sealing. The retaining plate (72) has a clearance groove (721) in the middle for accommodating the clamping plate (61), so that when the heat sealing head (71) is closed, the retaining plate (72) and the clamping plate (61) are in contact with the outer surface of the plastic bag.

3. The package sealing mechanism of the vertical packaging machine according to claim 2, characterized in that: The closed clamping plates (61) have different widths, wherein the narrower clamping plate (61) extends into the clearance groove (721) of the retaining plate (72) when the heat sealing head (71) is closed, and the clamping surface formed by the narrower clamping plate (61) and the retaining plate (72) cooperates with the clamping surface on the inner side of the wider clamping plate (61) on the other side to clamp the plastic bag.

4. The sealing mechanism of the vertical packaging machine according to any one of claims 1 to 3, characterized in that: The bag body clamping and moving device comprises a mounting seat (62), a crossbeam (63) is arranged on the mounting seat (62), a clamping plate (61) is fixed on the crossbeam (63), and the mounting seat (62) is connected to a power source for driving the mounting seat (62) to move up and down.

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