Side sealing mechanism of a tissue packaging machine

Abstract

The present invention discloses a side sealing mechanism of a tissue packaging machine, comprising a side sealing head, a connecting plate, a lifting arm, a bracket and an upper folding sealing guard plate, wherein the upper folding sealing guard plate is used to prevent the side sealing head from scalding a plastic film when moving up and down and to fold and seal the plastic film downwards, and the upper folding sealing guard plate is arranged on the right side of the connecting plate, the vertical plate, the folding sealing guard plate and the connecting plate move up and down simultaneously with the lifting arm, and the connecting plate on which the side sealing head is mounted swings in a space formed by the upper folding sealing guard plate and the vertical plate, and a gap is formed between the upper folding sealing guard plate and the upper transition plate for the side sealing head to enter and exit; a lower transition plate is arranged at the bottom of the upper transition plate, and a plane between the upper and lower transition plates forms an anti-wrinkle channel for the tissue wrapped by the plastic film to pass through, thereby saving the time for the transition plate to be turned over first in the prior art, saving a lot of time for the entire subsequent packaging, and, after the upper transition plate rises back to its original position along with the side sealing head, it can form an anti-wrinkle channel together with the lower transition plate, thereby ensuring the yield of finished products.

Description

Technical Field

[0001] The invention relates to an improved invention of a side sealing mechanism of a tissue packaging machine. Background Art

[0002] In the prior art, the sides of the tissues need to be sealed after packaging, and before sealing, the plastic film wrapping the tissues and conveying them needs to pass through a transition plate. In order to prevent the film that has wrapped the tissues from wrinkling during the conveying process, a channel with a height equivalent to that of the tissues needs to be maintained between the upper and lower transition plates, so that the tissues can move in the channel. When the tissues go out of the channel, the side sealing head descends to separate and close the tissue film. Since the side sealing head has a certain width, the gap formed by the width often causes wrinkles in the film. Therefore, the transition plate adopts a flipping type. When sealing, the flip plate needs to flip downward so that the side sealing head can enter the space to realize side sealing. After the side sealing is completed, the flip plate returns to its original position and is used as a transition plate. Therefore, since the flip plate needs to flip back and forth, it will inevitably take up space and time for this action, which undoubtedly reduces the production efficiency of the entire packaging. Therefore, the manufacturers using the flip plate have been troubled by the problem of improving the product output rate. Another problem is that in order to prevent wrinkles and cause scrap rate, a transition plate must be set up. In order to achieve side sealing, space must be set for the side head to move up and down, and space must also be provided for the side head to swing. Therefore, this technical defect has always existed and cannot be solved. Summary of the invention

[0003] In view of this, the technical problem solved by the present invention is to realize a side sealing mechanism of a tissue packaging machine that can improve the output rate and ensure the yield rate. In order to achieve the above purpose, the present invention is completed by adopting the following technical scheme: a side sealing mechanism of a tissue packaging machine, comprising

[0004] One side sealing head is used to seal the plastic film of the packaged object;

[0005] A connecting plate, used for connecting the side head;

[0006] A lifting arm, used for mounting the connecting plate, so that the connecting plate can be rotated on the lifting arm;

[0007] A bracket, on which the lifting arm is mounted, and which is connected to the lifting arm through a power source and moves up and down on the bracket;

[0008] It is characterized by including

[0009] An upper folding seal guard plate, used to prevent the plastic film from being scalded when the side sealing head moves up and down and to fold the plastic film downward, and the upper folding seal guard plate is arranged on the right side of the connecting plate;

[0010] A lower folding and sealing plate is folded upwards through a power source and a plastic film corresponding to an upper folding and sealing guard plate;

[0011] A vertical plate, used for installing the upper transition plate, the vertical plate is arranged on the left side of the connecting plate;

[0012] The vertical plate, folding seal guard plate and connecting plate move up and down simultaneously with the lifting arm, and the connecting plate on which the side seal head is installed swings in the space formed by the upper folding seal guard plate and the vertical plate, and a gap is formed between the upper folding seal guard plate and the upper transition plate for the side seal head to enter and exit;

[0013] A lower transition plate is arranged at the bottom of the upper transition plate, and a plane between the upper and lower transition plates forms an anti-wrinkle channel for the paper towels wrapped by the plastic film to pass through.

[0014] Preferably, the upper transition plate further includes a fixed transition plate in front of the upper transition plate, and the planes of the fixed transition plate, the upper transition plate and the lower transition plate together form an anti-wrinkle channel.

[0015] Preferably, the lower transition plate is provided with a clearance groove, and the shape of the upper transition plate matches the shape of the clearance groove. During side sealing, the upper transition plate enters the clearance groove for the side sealing head to seal the plastic film.

[0016] Preferably, the lower transition plate can be raised and lowered. When side sealing is performed, the lower transition plate descends to make way for the upper transition plate so that the side sealing head can seal the plastic film.

[0017] Preferably, a pressing component is also included to press the paper towel to prevent it from shifting when the side sealing head swings to seal.

[0018] Preferably, the invention further comprises a limit baffle plate for blocking the paper towel and preventing it from shifting when the side sealing head swings to seal the side.

[0019] Preferably, the gap between the pressing surface of the pressing component and the paper towel conveying plane is slightly smaller than the total height or total width of the packaged paper towels.

[0020] Preferably, the limit baffle is installed on the movable conveyor belt and moves simultaneously with the paper towel after the side sealing is completed. A plurality of limit baffles are provided on the conveyor belt. After the side sealing is completed, the paper towel is clamped between the two baffles and conveyed synchronously with the conveyor belt.

[0021] Since the upper transition plate is arranged on the connecting plate, the present invention can move synchronously with the side head, thereby saving the time of flipping the transition plate in the prior art, which saves a lot of time for the entire subsequent packaging and greatly improves the output rate. Moreover, after the upper transition plate rises back to its position as the side head rises, it can form an anti-wrinkle channel together with the lower transition plate, which ensures the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a stereogram of the present invention. DETAILED DESCRIPTION

[0024] The accompanying drawings show the structure and embodiments of the present invention. Now, the details and working principle thereof are further described in conjunction with the accompanying drawings. The side sealing mechanism of the tissue packaging machine includes:

[0025] A side sealing head 1 is used to seal the plastic film of the packaged object. The side sealing head is connected to an electric heating device, so that the side sealing head can generate heat;

[0026] A connecting plate 2 is used to connect the side heads. The connecting plate has a certain width. Since the side heads are long strips, the width corresponds to the length of the side heads.

[0027] A lifting arm 3 is used to install the connecting plate 2, which can make the connecting plate rotate on the lifting arm. The rotation here mainly refers to the swing of the connecting plate. Because there is a rotating shaft on the lifting arm, the connecting plate is connected to the rotating shaft 4, and the rotating shaft is connected to the power source. When the power source transmits power to the rotating shaft, the rotating shaft will rotate, thereby realizing the swing of the connecting plate. The swing can be realized by rotating back and forth. There are many choices of power sources, which can be a motor plus connecting rod structure, a rotary cylinder, or a cam. Anyway, the selection of the power source is not the focus of the present invention, and it is mainly to generate a force.

[0028] A bracket 5 is provided for the installation of the lifting arm, and is connected to the lifting arm through a power source and moves up and down on the bracket. A guide rail 6 may be provided on the bracket, and a slider 7 is provided on the lifting arm, and the slider can slide on the guide rail.

[0029] An upper folding seal guard plate 8 is used to prevent the plastic film from being scalded when the side seal head moves up and down and to fold the plastic film downward. The upper folding seal guard plate is arranged on the right side of the connecting plate. The folding seal function is the same as that of the prior art, and it also protects the plastic film from being scalded.

[0030] The upper folding seal guard plate, side seal head and connecting plate move synchronously through the lifting arm.

[0031] A lower folding plate 9 is used to fold upward the plastic film corresponding to the upper folding plate through a power source. The structure of the lower folding plate is the same as that of the prior art, and is used to fold the side of the plastic film and cooperate with the upper folding plate.

[0032] A vertical plate 10, used for installing the upper transition plate 11, the vertical plate is arranged on the left side of the connecting plate;

[0033] The vertical plate also moves up and down simultaneously with the lifting arm together with the folding sealing guard plate and the connecting plate. The connecting plate on which the side head is installed swings in the space formed by the upper folding sealing guard plate and the vertical plate. A gap is formed between the bottom of the upper folding sealing guard plate and the upper transition plate for the side head to move in and out after swinging.

[0034] A lower transition plate 12 is provided at the bottom of the upper transition plate 11, and the plane between the upper and lower transition plates forms an anti-wrinkle channel 13 for the paper towels wrapped in plastic film to pass through, because the side sealing head should be away from the plastic film when not side-sealed, and the packaged paper towel products have to pass through the side sealing head before side sealing. Therefore, in order to prevent the plastic film from wrinkling when passing through this space, a transition plate is used to solve this problem.

[0035] If the passage is too long, or the upper transition plate is not long enough, a fixed transition plate 20 is further provided in front of the upper transition plate. The fixed transition plate and the planes of the upper transition plate and the lower transition plate together form an anti-wrinkle passage, which can wrap the plastic film passing through here around the paper towel and prevent it from spreading.

[0036] The lower transition plate is provided with a clearance groove 14, and the shape of the upper transition plate matches the shape of the clearance groove. During side sealing, the upper transition plate enters the clearance groove for the side sealing head to seal the plastic film. If the lower transition plate does not have a clearance groove, the upper transition plate will be supported by the lower transition plate, and the side sealing head will not be able to continue to descend. The side sealing is performed on the position where side sealing is required. This clearance groove is also very important.

[0037] Another embodiment of the lower transition plate is that the lower transition plate can be lifted up and down. When the side is sealed, the lower transition plate descends to make way for the upper transition plate, so that the side sealing head can seal the plastic film, which also plays a role of making way. The lifting and lowering of the lower transition plate can be achieved by a lifting cylinder, which is a lifting with a power source. It can also be achieved by spring reset without a power source. These conventional powers are not the focus of the present invention. The main purpose is to achieve the lifting and lowering of the lower transition plate.

[0038] It also includes a pressing component for pressing the paper towel to prevent it from shifting when the side sealing head swings to seal the side. The pressing component is arranged at the rear of the side sealing head to prevent the paper towel from shifting when the side sealing is performed.

[0039] A limit baffle (not shown in the figure) may also be included to block the paper towel from shifting when the side seal head swings to seal. This is optional and may be set or not. The effect is better after the limit baffle is set.

[0040] When the pressing component is provided, the gap between the pressing surface of the pressing component and the paper towel conveying plane is slightly smaller than the total height or total width of the packed paper towels.

[0041] Another embodiment of the limit baffle is that the limit baffle is installed on a movable conveyor belt and moves simultaneously with the paper towel after the side sealing is completed. A plurality of limit baffles are provided on the conveyor belt. After the side sealing is completed, the paper towel is clamped between the two baffles and conveyed synchronously with the conveyor belt.

[0042] When the present invention is working, the paper towels wrapped in plastic film first pass through the channels formed by the upper and lower transition plates. When all of them pass through the upper and lower transition plates, the upper transition plate will descend, and the side sealing head that descends together with the upper transition plate will also descend. When the upper transition plate falls into the yielding groove of the lower transition plate, the side sealing head is just in the position of the side sealing of the paper towels, the connecting plate swings to achieve side sealing, and then the upper transition plate returns to its position to achieve the next cycle.

[0043] Since the upper transition plate is arranged on the connecting plate, the present invention can move synchronously with the side head, thereby saving the time of flipping the transition plate in the prior art, which saves a lot of time for the entire subsequent packaging and greatly improves the output rate. Moreover, after the upper transition plate rises back to its position as the side head rises, it can form an anti-wrinkle channel together with the lower transition plate, which ensures the yield rate.

Claims

1. A side sealing mechanism of a tissue packaging machine, comprising a side sealing head for sealing a plastic film of a packaged object; a connecting plate for connecting the side sealing head; a lifting arm for mounting the connecting plate, which can rotate on the lifting arm; a bracket for mounting the lifting arm, and which is connected to the lifting arm through a power source and moves up and down on the bracket; characterized in that It includes an upper folding and sealing guard plate, which is used to prevent the plastic film from being scalded when the side sealing head moves up and down and to fold the plastic film downward, and the upper folding and sealing guard plate is arranged on the right side of the connecting plate; a lower folding and sealing plate, which folds upward the plastic film corresponding to the upper folding and sealing guard plate through a power source; a vertical plate, which is used to install the upper transition plate, and the vertical plate is arranged on the left side of the connecting plate; the vertical plate, the folding and sealing guard plate and the connecting plate move up and down simultaneously with the lifting arm, and the connecting plate on which the side sealing head is installed swings in the space formed by the upper folding and sealing guard plate and the vertical plate, and a gap is formed between the upper folding and sealing guard plate and the upper transition plate for the side sealing head to enter and exit. A lower transition plate is provided at the bottom of the upper transition plate, and the plane between the upper and lower transition plates forms an anti-wrinkle channel for paper towels wrapped in plastic film to pass through. The upper transition plate also includes a fixed transition plate in front of it, and the fixed transition plate and the planes of the upper transition plate and the lower transition plate together form an anti-wrinkle channel. The lower transition plate is provided with a makeshift groove, and the shape of the upper transition plate matches the shape of the makeshift groove. During side sealing, the upper transition plate enters the makeshift groove for the side sealing head to seal the plastic film, and the lower transition plate can be raised and lowered, and the lower transition plate descends to make way for the upper transition plate for the side sealing head to seal the plastic film.

2. A side sealing mechanism for a tissue packaging machine as claimed in claim 1, characterized in that It also includes a pressing component for pressing the paper towel to prevent it from shifting when the side sealing head swings to seal.

3. A side sealing mechanism for a tissue packaging machine as claimed in claim 1 or 2, characterized in that It also includes a limit baffle, which is used to block the paper towel and prevent it from shifting when the side sealing head swings to seal.

4. A side sealing mechanism for a tissue packaging machine as claimed in claim 3, characterized in that The gap between the pressing surface of the pressing component and the paper towel conveying plane is slightly smaller than the total height or total width of the packed paper towels.

5. A side sealing mechanism for a tissue packaging machine as claimed in claim 4, characterized in that The limit baffle is installed on the movable conveyor belt and moves with the paper towel after the side sealing is completed. A plurality of limit baffles are arranged on the conveyor belt. After the side sealing is completed, the paper towel is clamped between the two baffles and conveyed synchronously with the conveyor belt.

Images