A paper tube packing machine
By improving the design of the feeding, transferring and pushing components of the paper tube packaging machine, the workpiece is fed into the packaging bag in a standing position in one go, which solves the problems of uneven filling and insufficient saturation of the workpiece in the existing technology, and improves packaging efficiency and neatness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN DONGRUI XINGLIAN INTELLIGENT TECH CO LTD
- Filing Date
- 2024-05-09
- Publication Date
- 2026-06-05
AI Technical Summary
Existing paper tube packaging machines have problems with insufficient uniformity and saturation of workpiece filling when loading multiple tubular workpieces. In particular, the tubular workpieces are fed in an inverted manner, which makes it difficult for the workpieces inside the packaging bag to be aligned and they tend to fold up along the center line of the bag opening.
The feeding component transports the workpieces to the feeding position in a single row. The first transfer component sends the single row of workpieces to the stacking position. After the predetermined number of rows are arranged, the second transfer component sends them to the discharge position. The pushing component pushes the workpieces into the bag mold, and then heat shrinks and seals them to ensure that the workpieces are sent into the packaging bag in a standing position in one go.
It improves the neatness and saturation of the filling of the workpieces in the packaging bag, avoids the stacking of the packaging bag along the center line of the bag opening, and makes it easier to align the workpieces in the front and back rows, thus improving packaging efficiency and neatness.
Smart Images
Figure CN118306636B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of paper tube packaging, and more particularly to a paper tube packaging machine. Background Technology
[0002] In industrial production, paper tubes are used as loading elements for various strip and linear substrates. The strip and linear substrates are wound onto the paper tubes for easy storage. After the paper tubes are produced, multiple paper tubes need to be packaged together before they can be transported to the next level of manufacturers, hence the use of paper tube packaging machines.
[0003] In related technologies, such as the authorized number CN21746266U, an automatic packaging and sealing machine operates on the following principle: A tubular component is placed into a ring-shaped transmission belt. The rotation of the belt causes the component to enter the guide section. The component falls along its inclined end face into a tilting disc. A fourth cylinder drives the disc to rotate, allowing the component to enter the material cavity formed by the side plates. The position of the tilting disc corresponds to the position of the material cavity to ensure accurate entry. When the set number of components is reached, a second cylinder drives a pusher assembly to descend along a support, bringing it to the same horizontal level as the material cavity. The pusher moves along a slide rail, thus propelling the pusher assembly through the material cavity. The packaging bag opens and simultaneously attaches to a tray and a support plate. A first cylinder drives the tray to move downwards, separating the tray from the support plate, opening the packaging bag. The pusher assembly passes through the material cavity to push the tubular component into the bag and continues to move, pushing the component and bag to the heat-sealing device. Adjust the pushing position so that the bag opening is between the upper and lower clamping strips. The third air rod drives the upper and lower clamping strips to press close together to clamp the bag opening. The sealing roller has heat to weld the bag opening. The heating roller achieves the heating effect to heat-seal the bag opening. The packaging bag is made of plastic. The heat shrink box is equipped with several hot air blowers. The hot air blowers blow hot air into the heat shrink box to heat-shrink the packaging bag inside the box to further reduce its volume. This completes the automatic packaging and sealing action.
[0004] Regarding the aforementioned technologies, there are drawbacks. Tubular workpieces are fed in an inverted manner, so only one row of tubular workpieces can be fed into the packaging bag at a time. At the same time, the upper side of the packaging bag will be in straight contact with the tubular workpieces. Furthermore, multiple rows of tubular workpieces need to be fed into the packaging bag in multiple batches. As a result, the packaging bag is prone to folding along the center line of the bag opening, and the two rows of tubular workpieces are not easy to align. This leads to the defects of low uniformity and saturation of the workpiece filling in the packaging bag. Summary of the Invention
[0005] In order to make the workpieces inside the packaging bag more neat and more saturated, this application provides a paper tube packaging machine.
[0006] The paper tube packaging machine provided in this application adopts the following technical solution:
[0007] A paper tube packaging machine, comprising:
[0008] The frame has a feeding position, a stacking position, and a discharging position;
[0009] A feeding assembly is used to convey workpieces in a standing position to the feeding position in a single row;
[0010] A first transfer component is used to transfer a predetermined number of single-row workpieces from the feed position to the stacking position;
[0011] The second transfer component is used to transfer a predetermined number of multiple rows of workpieces from the stacking position to the discharge position;
[0012] The bag-feeding mold is tubular and designed for packaging bags to fit inside; the bag-feeding mold is located adjacent to the discharge position.
[0013] A heat-shrinkable assembly is disposed on the side of the bag-feeding mold away from the discharge position;
[0014] A heat-sealing assembly is disposed on the side of the heat-shrink assembly away from the bag-insertion mold.
[0015] The pusher assembly is used to push the workpiece so that it enters the bag-feeding mold in sequence and allows the workpiece and the packaging bag to enter the positions of the heat-shrink assembly and the heat-melt sealing assembly.
[0016] By adopting the above technical solution, the workpieces are first conveyed to the feeding position in a single row by the feeding component. Then, the single row of workpieces is sent to the stacking position by the first transfer component. When the workpieces are arranged in a predetermined number of rows, the predetermined number of multiple rows of workpieces are sent to the discharge position by the second transfer component. Finally, the workpieces are pushed into the bag-in mold by the pushing component. Then, the workpieces and the packaging bags are pushed forward to the positions of the heat-shrinking component and the heat-melting sealing component, so as to perform heat-shrinking treatment on the packaging bags and sealing treatment on the bag opening. In summary, multiple workpieces are sent into the packaging bag in a standing position at one time. Since the packaging bags are pre-fitted onto the bag-in mold, the packaging bags are less likely to fold along the center line of the bag opening, and the front and rear rows of workpieces can be more easily aligned, thereby improving the neatness and saturation of the workpiece filling in the packaging bag.
[0017] Preferably, the feeding assembly is a conveyor belt structure that extends to the feeding position; the first transfer assembly forms a quantitative limiting area at the feeding position, where a predetermined number of workpieces will remain at the feeding position.
[0018] By adopting the above technical solution, the feeding component can be stopped at different times during the process of transferring the workpiece from the feeding position to the stacking position, thereby improving the ease of use of the paper tube packaging machine.
[0019] Preferably, the feeding position and the stacking position are arranged adjacent to each other; the first transfer component includes a front baffle, an end baffle, and a feeding rod, the front baffle is rotatably mounted on the frame, the front baffle is located above the feeding component, the front baffle is provided with a material passage notch for the workpiece to pass through; the end baffle is mounted on the frame, the end baffle and the front baffle are spaced apart to form the quantitative limiting area; the feeding rod is connected to the front baffle, and the rotation of the front baffle causes the feeding rod to push the workpiece from the feeding position to the stacking position.
[0020] By adopting the above technical solution, when the material feeding notch is aligned with the workpiece, the workpiece will enter the quantitative limiting area in sequence. After a predetermined number of workpieces have entered, the front baffle is rotated to make the material feeding notch staggered. At this time, the workpieces not in the quantitative limiting area will be separated from the workpieces in the quantitative limiting area and will not affect each other. At the same time, during this process, the workpieces in the quantitative limiting area can be transferred to the stacking position with the help of the feeding rod.
[0021] Preferably, the second transfer assembly includes a transfer slide, a picking slide, a lifting drive, and picking grippers. The transfer slide moves along the line connecting the stacking position and the discharge position. The picking slide is vertically slidably mounted on the transfer slide. The lifting drive is mounted on the transfer slide and connected to the picking slide. The picking grippers are mounted on the picking slide, and one picking gripper clamps a workpiece by expanding its inner wall.
[0022] By adopting the above technical solution, on the one hand, the transfer slide and the picking slide can be used to transfer the workpiece from the stacking position to the discharge position; on the other hand, the picking claws clamp the workpiece by expanding the workpiece from the inner wall, so the arrangement between two adjacent workpieces is more compact, so there is no need to adjust the compactness of the workpieces later, thereby improving packaging efficiency.
[0023] Preferably, the material-retrieving slide includes an upper support plate, a lower support plate, and a sliding guide rod. The upper support plate is located above the transfer slide. The lower support plate is for the material-retrieving gripper. The two ends of the sliding guide rod are respectively connected to the upper support plate and the lower support plate, and the sliding guide rod slides vertically through the transfer slide. The lifting drive includes a lifting motor, a drive pulley, a tension pulley, and a transmission belt. The lifting motor is fixedly mounted on the transfer slide. The drive pulley is connected to the output shaft of the lifting motor. The tension pulley is rotatably mounted on the transfer slide. One end of the transmission belt is connected to the upper support plate, and the other end of the transmission belt is connected to the lower support plate. The transmission belt is wound in a serpentine pattern around the drive pulley and the tension pulley.
[0024] By adopting the above technical solution, the lifting motor drives the drive pulley to rotate, causing the length of the transmission belt between the drive pulley and the lower support plate to change. At the same time, the length of the transmission belt between the tension pulley and the upper support plate also changes, thus realizing the lifting and lowering of the material picking slide. In addition, with this design, when it is necessary to change the maximum stroke of the material picking slide, the distance between the upper and lower support plates can be changed directly. Therefore, it is simpler than the method that requires changing the drive source. At the same time, the load applied by the material picking slide can be balanced by the friction between the belt and the pulley and the tension between the belt and the pulley. Therefore, a larger drive load can be achieved with a more compact structure.
[0025] Preferably, the bag-feeding mold is slidably mounted on the frame, and the direction of movement of the bag-feeding mold is perpendicular to the line connecting the discharge position and the heat-shrinking assembly.
[0026] By adopting the above technical solution, when the packaging bag is placed on the bag-in mold, the bag-in mold can be moved to the area opposite the discharge position and the heat-shrink assembly, so that the external equipment will place the packaging bag on the bag-in mold.
[0027] Preferably, the bag-feeding mold includes an upper limit plate and a lower limit plate, the upper limit plate and the lower limit plate are U-shaped bends, the inner sides of the bends of the upper limit plate and the lower limit plate are facing each other, the lower limit plate is located on the inner side of the bend of the upper limit plate, and the upper limit plate is vertically slidable relative to the lower limit plate.
[0028] By adopting the above technical solution, the height of the bag-feeding mold can be reduced first so that the bag opening can be fitted onto the bag-feeding mold. Then, the height of the bag-feeding mold can be increased so that the bag is in a taut and stable state on the bag-feeding mold.
[0029] Preferably, the heat shrink assembly is implemented using multiple hot air blowers. The heat melt sealing assembly is arranged adjacent to the heat shrink assembly. The heat melt sealing assembly includes a heat melt upper pressure block, a heat melt lower pad block, and a lateral folding push rod. The heat melt upper pressure block and the heat melt lower pad block are vertically slidable. The upper surface of the heat melt lower pad block is used to heat the packaging bag. The heat melt lower pad block cooperates with the heat melt upper pressure block to clamp the packaging bag. The lateral folding push rod is horizontally slidable. The lateral folding push rod is located on the side of the heat melt upper pressure block near the heat shrink assembly. The two lateral folding push rods move towards each other to fold the bag opening from the side.
[0030] By adopting the above technical solution, the side part of the packaging bag opening is first folded in by the side folding push rod. At this time, the side part of the packaging bag opening will be located between the upper part and the lower part, and the upper part and the lower part of the packaging bag opening will not be affected. Then, the upper heat-melting pressure block and the lower heat-melting pad block are used to fold and heat-melt seal the bag opening, thereby achieving a tight heat-melt seal for the packaging bag opening.
[0031] Preferably, the portion of the lateral folding push rod away from the hot-melt upper pressure block is located in the area where the heat-shrink assembly is situated.
[0032] By adopting the above technical solution, the opening of the packaging bag can be heat-shrinked during lateral folding, so the opening of the packaging bag can be more tightly sealed when the top and bottom are closed by heat fusion.
[0033] Preferably, the hot-melt upper pressure block is connected to a guide plate, the guide plate is provided with a guide surface having a near stop position and a far stop position, the hot-melt upper pressure block is rotatably connected to a swing rod, the rotation axis of the swing rod is perpendicular to the plane where the hot-melt upper pressure block slides, one end of the swing rod is connected to the lateral folding push rod, and the other end of the swing rod abuts against the guide surface.
[0034] By adopting the above technical solution, due to the setting of the guide plate, the two lateral folding push rods can move relative to each other to fold during the hot melt sealing process. This not only improves the smoothness of the connection between lateral folding, vertical folding and hot melt sealing, but also makes the structure of the entire hot melt sealing assembly more compact, so that the hot melt treatment position is closer to the heat shrink assembly, thereby further improving the quality of hot melt sealing.
[0035] In summary, this application includes at least one of the following beneficial technical effects:
[0036] 1. First, the workpiece is conveyed to the feeding position in a single row by the feeding component. Then, the single row of workpieces is sent to the stacking position by the first transfer component. Then, when the workpieces are arranged in a predetermined number of rows, the predetermined number of multiple rows of workpieces are sent to the discharge position by the second transfer component. Finally, the workpieces are pushed into the bag entry mold by the pushing component. Then, the workpieces and packaging bags are sent to the positions of the heat shrink component and the heat melt sealing component to perform heat shrink treatment on the packaging bags and seal the bag opening. In summary, multiple workpieces are sent into the packaging bag in a standing position at one time. Since the packaging bag is pre-fitted onto the bag entry mold, the packaging bag is less likely to fold along the center line of the bag opening. The two rows of workpieces can also be more easily aligned, thereby improving the neatness and saturation of the workpiece filling in the packaging bag.
[0037] 2. The lifting motor drives the drive pulley to rotate, causing the length of the transmission belt between the drive pulley and the lower support plate to change. Simultaneously, the length of the transmission belt between the tension pulley and the upper support plate also changes, thus achieving the lifting and lowering of the material-retrieving slide. Furthermore, this design allows for changes in the maximum stroke of the material-retrieving slide simply by altering the distance between the upper and lower support plates, making it simpler than methods that require changing the drive source. Additionally, the load applied by the material-retrieving slide can be balanced by the friction between the belt and pulley, as well as the tension between them, allowing for a larger drive load through a more compact structure. Attached Figure Description
[0038] Figure 1 This is an overall structural diagram of the paper tube packaging machine in the embodiments of this application.
[0039] Figure 2 This is a schematic diagram illustrating the cooperative relationship between the feeding component and the first transfer component in an embodiment of this application.
[0040] Figure 3 This is a schematic diagram illustrating the working principle of the second transfer component in the embodiments of this application.
[0041] Figure 4 This is a schematic diagram illustrating the working principle of the bag-filling mold in the embodiments of this application.
[0042] Figure 5 This is a schematic diagram illustrating the working principle of the hot melt sealing assembly in the embodiments of this application.
[0043] Explanation of reference numerals in the attached diagram: 1. Frame; 11. Feeding position; 12. Stacking position; 13. Discharge position; 2. Feeding assembly; 21. Quantitative limiting zone; 3. First transfer assembly; 31. Front baffle; 311. Material passage notch; 32. End baffle; 33. Material guide rod; 4. Second transfer assembly; 41. Transfer slide; 42. Material picking slide; 421. Upper support plate; 422. Lower support plate; 423. Sliding guide rod; 43. Lifting drive components; 431. Lifting motor; 432. Drive pulley; 433. Tensioning pulley; 434. Transmission belt; 44. Material gripper; 5. Bag entry mold; 51. Upper limit plate; 52. Lower limit plate; 6. Heat shrink assembly; 7. Heat melt sealing assembly; 71. Heat melt upper pressure block; 72. Heat melt lower pad block; 73. Lateral folding push rod; 8. Material pushing assembly; 9. Guide plate; 91. Guide guide surface; 10. Swing rod. Detailed Implementation
[0044] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0045] This application discloses a paper tube packaging machine. (Refer to...) Figure 1 The paper tube packaging machine includes a frame 1, a feeding assembly 2, a first transfer assembly 3, a second transfer assembly 4, an infeed mold 5, a heat shrink assembly 6, a heat melt sealing assembly 7, and a pushing assembly 8. The frame 1 is divided into an infeed position 11, a stacking position 12, and an outfeed position 13 depending on the process. The feeding assembly 2 is mounted on the frame 1 and conveys a single-row of upright workpieces to the infeed position 11. The first transfer assembly 3 is mounted on the frame 1 and transfers a predetermined number of workpieces from the infeed position 11 to the stacking position 12. The second transfer assembly 4 is mounted on the frame 1 and transfers a predetermined number of workpieces from the infeed position 11 to the stacking position 12. A number of workpieces are transferred from stacking position 12 to discharge position 13; the bag-feeding mold 5 is tubular and is used to fit the packaging bag, and is located adjacent to the discharge position 13; the heat-shrinking assembly 6 is located on the side of the bag-feeding mold 5 away from the discharge position 13, and is used to heat-shrink the packaging bag; the heat-sealing assembly 7 is located on the side of the heat-shrinking assembly 6 away from the discharge position 13, and is used to heat-seal the opening of the packaging bag; the pushing assembly 8 pushes the workpiece into the bag-feeding mold first, and then the workpiece and the packaging bag enter the positions of the heat-shrinking assembly 6 and the heat-sealing assembly 7.
[0046] Reference Figure 1 The working principle of the paper tube packaging machine is as follows: First, the workpiece is conveyed to the feeding position 11 in a single row by the feeding component 2. Then, the single row of workpieces is sent to the stacking position 12 by the first transfer component 3. Then, when the workpieces are arranged in a predetermined number of rows, the predetermined number of multiple rows of workpieces are sent to the discharge position 13 by the second transfer component 4. Finally, the workpieces are pushed into the bag entry mold 5 by the pushing component 8. Then, the workpieces and packaging bags are sent to the positions of the heat shrink component 6 and the heat melt sealing component 7 to perform heat shrink treatment on the packaging bags and seal the bag opening. As can be seen from the working process, multiple workpieces are sent into the packaging bag in a standing position at one time. The packaging bag is pre-fitted onto the bag entry mold 5, so the packaging bag is not easy to fold along the center line of the bag opening. The front and rear rows of workpieces can also be more easily aligned, thereby improving the neatness and saturation of the workpiece filling in the packaging bag.
[0047] Reference Figure 1 and Figure 2To improve the structural simplicity and ease of use of the paper tube packaging machine, the following configuration is provided: the feeding component 2 is a conveyor belt structure, extending to the feeding position 11. Simultaneously, the first transfer component 3 forms a quantitative limiting zone 21 at the feeding position. At the quantitative limiting zone 21, a predetermined number of workpieces will remain at the feeding position 11. Specifically, to achieve this function, the feeding position 11 is adjacent to the stacking position 12. The first transfer component 3 includes a front baffle 31, an end baffle 32, and a feeding lever 33. The front baffle 31 is rotatably mounted on the frame 1 via a motor drive, and is located above the feeding component 2. The rotation axis of 31 is parallel to the conveying direction of the feeding assembly 2. The front baffle 31 has a material passage notch 311, which allows the workpiece to pass through. The end baffle 32 is set on the frame 1. The end baffle 32 can rotate with the front baffle 31 or not. The interval between the end baffle 32 and the front baffle 31 is the quantitative limiting area 21. The push rod 33 is connected to the end face of the front baffle 31 near the end baffle 32. During the rotation of the front baffle 31, the push rod 33 will push the workpiece from the feeding position 11 into the stacking position 12, thereby realizing the quantitative and rapid transfer of the workpiece between the feeding position 11 and the stacking position 12 without stopping the feeding assembly 2.
[0048] Reference Figure 1 and Figure 3 To eliminate the need for adjusting the workpiece at the discharge position 13, the second transfer assembly 4 includes a transfer slide 41, a picking slide 42, a lifting drive 43, and a picking gripper 44. The transfer slide 41 slides horizontally and moves from above the stacking position 12 to above the discharge position 13. The picking slide 42 is vertically slidably connected to the transfer slide 41. The lifting drive 43 is mounted on the transfer slide 41 and connected to the picking slide 42. The picking gripper 44 is mounted on the picking slide 42 and clamps the workpiece from the inner wall of the workpiece, so that adjacent workpieces can be arranged more closely when the workpiece at the stacking position 12 is picked up.
[0049] Reference Figure 1 and Figure 3To achieve a larger vertical driving load through a more compact structure, the following configuration is provided: First, the material-retrieving slide 42 is divided into an upper support plate 421, a lower support plate 422, and a sliding guide rod 423. The upper support plate 421 is located above the transfer slide 41 and has a cuboid structure. The lower support plate 422 is used to install the material-retrieving gripper 44. The sliding guide rod 423 is cylindrical, and its two ends are connected to the upper support plate 421 and the lower support plate 422, respectively. The sliding guide rod 423 slides through the transfer slide 41. Secondly, the lifting drive component 43 includes a lifting motor 431, a drive pulley 432, a tension pulley 433, and a transmission belt 434. The lifting motor 431 is fixedly installed on the transfer slide 41. The drive pulley 432 is coaxially and fixedly connected to the output shaft of the lifting motor 431. The tension pulley 433 is rotatably mounted on the transfer slide 41. The upper end of the transmission belt 434 is fixedly connected to the upper support plate 421, and the lower end is fixedly connected to the lower support plate 422. The transmission belt 434 is tensioned and sleeved on the drive pulley 432 and the tension pulley 433 in a serpentine bending state.
[0050] Reference Figure 1 and Figure 3 During the process of the lifting motor 431 driving the drive pulley 432 to rotate, the length of the transmission belt 434 located between the drive pulley 432 and the lower support plate 422 will change, and the length of the transmission belt 434 located between the tension pulley 433 and the upper support plate 421 will also change. Therefore, the lifting of the material picking slide 42 can be realized. At the same time, it also has the following advantages: First, when it is necessary to change the maximum stroke of the material picking slide 42, it is only necessary to change the distance between the upper support plate 421 and the lower support plate 422. Second, the load applied to the material picking slide 42 can be balanced by the friction and tension between the belt and the pulley, so as to achieve a larger driving load of the lifting drive component 43.
[0051] Reference Figure 1 and Figure 4In this embodiment, the packaging bag needs to be pre-fitted onto the bag-feeding mold 5. To facilitate this pre-fitting, the following settings are made: First, the bag-feeding mold 5 is slidably mounted on the frame 1. The movement direction of the bag-feeding mold 5 is perpendicular to the line connecting the discharge position 13 and the heat-shrinking assembly 6. Therefore, the bag-feeding mold 5 can be moved out before bagging, making it easier for external equipment to fit the packaging bag onto the bag-feeding mold 5. Second, the bag-feeding mold 5 includes an upper limit plate 51 and a lower limit plate 52. Both the upper limit plate 51 and the lower limit plate 52 are U-shaped. The inner sides of the bends of the upper limit plate 51 and the lower limit plate 52 face each other. The lower limit plate 52 is located on the inner side of the bend of the upper limit plate 51. At the same time, the upper limit plate 51 is vertically slidable relative to the lower limit plate 52. Before bagging, the height of the bag-feeding mold 5 is reduced to facilitate bagging. After bagging, the height of the bag-feeding mold 5 is increased to ensure that the packaging bag is in a stable tension state.
[0052] Reference Figure 1 and Figure 5 In this embodiment, the hot melt assembly uses multiple hot air blowers to heat shrink the packaging bag. The hot melt sealing assembly 7 is arranged adjacent to the heat shrinking assembly 6. Specifically, the hot melt sealing assembly 7 also includes a hot melt upper pressure block 71, a hot melt lower pad 72, and a lateral folding push rod 73. The hot melt upper pressure block 71 is vertically slidable, and the hot melt lower pad 72 is also vertically slidable. A resistance wire is installed on the upper side of the hot melt lower pad 72 to heat the packaging bag. The hot melt lower pad 72 and the hot melt upper pressure block 71 move closer together to clamp the opening of the packaging bag. The lateral folding push rod 73 is horizontally arranged and located on the side of the hot melt upper pressure block 71 near the heat shrinking assembly 6. Part of the lateral folding push rod 73 is located in the area where the heat shrinking assembly 6 is located. There are two lateral folding push rods 73. When the two lateral folding push rods 73 move closer together, they will close the opening of the packaging bag from the middle position on the side of the packaging bag.
[0053] Reference Figure 1 and Figure 5 The working principle of heat fusion sealing is as follows: First, the side part of the packaging bag opening is folded in by the side folding push rod 73. At this time, the side part of the packaging bag opening will be located between the upper part and the lower part, and the upper part and the lower part of the packaging bag opening will not be affected. Then, the heat fusion upper pressure block 71 and the heat fusion lower pad block 72 are used to fold up and down and heat fusion seal the opening, thereby achieving a tight heat fusion seal of the packaging bag opening.
[0054] Reference Figure 1 and Figure 5In this embodiment, the hot-melt upper pad block and the hot-melt lower pressing block are brought together and separated by a belt conveyor. To further improve the smoothness of the connection between the three processes of lateral folding, vertical folding, and hot-melt sealing, the hot-melt upper pressing block 71 is connected to a guide plate 9. The guide plate 9 is provided with a guide surface 91 having a near stop position and a far stop position. At the same time, the hot-melt upper pressing block 71 is rotatably connected to a swing rod 10. The rotation axis of the swing rod 10 is perpendicular to the plane in which the hot-melt upper pressing block 71 slides. The upper end of the swing rod 10 is connected to the guide plate 91. The two lateral folding push rods 73 can move relative to each other during the heat-sealing process, which is maintained by a spring structure. This improves the smoothness of the connection between lateral folding, vertical folding and heat-sealing, and also makes the structure of the entire heat-sealing assembly 7 more compact, so that the heat-sealing position is closer to the heat-shrinking assembly 6, thereby further improving the quality of heat-sealing.
[0055] The implementation principle of a paper tube packaging machine according to an embodiment of this application is as follows: First, the workpiece is conveyed in a single row to the feeding position 11 by the feeding component 2. Then, the single row of workpieces is sent to the stacking position 12 by the first transfer component 3. Then, when the workpieces are arranged in a predetermined number of rows, the predetermined number of multiple rows of workpieces are sent to the discharge position 13 by the second transfer component 4. Finally, the workpieces are pushed into the bag entry mold 5 by the pushing component 8. Then, the workpieces and packaging bags are sent to the positions of the heat shrink component 6 and the heat melt sealing component 7 to perform heat shrink treatment on the packaging bags and seal the bag opening. As can be seen from the working process, multiple workpieces are sent into the packaging bag in a standing position at one time. The packaging bag is pre-fitted onto the bag entry mold 5, so the packaging bag is not easy to fold along the center line of the bag opening. The front and rear rows of workpieces can also be more easily aligned, thereby improving the neatness and saturation of the workpiece filling in the packaging bag.
[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A paper tube packaging machine, characterized in that: include: The frame (1) has a feeding position (11), a stacking position (12) and a discharging position (13); The feeding assembly (2) is used to convey workpieces in a standing position to the feeding position (11) in a single row; A first transfer component (3) is used to transfer a predetermined number of single-row workpieces from the feed position (11) to the stacking position (12); The second transfer component (4) is used to transfer a predetermined number of multiple rows of workpieces from the stacking position (12) to the discharge position (13); The bag-feeding mold (5) is tubular and is used to fit the packaging bag. The bag-feeding mold (5) is arranged adjacent to the discharge position (13). The heat shrink assembly (6) is disposed on the side of the bag entry mold (5) away from the discharge position (13); A heat-sealing assembly (7) is disposed on the side of the heat-shrink assembly (6) away from the bag-feeding mold (5). The pusher assembly (8) is used to push the workpiece so that it enters the bag mold (5) in sequence and to allow the workpiece and the packaging bag to enter the positions of the heat shrink assembly (6) and the heat melt sealing assembly (7); The feeding assembly (2) is constructed as a conveyor belt and extends to the feeding position (11); the first transfer assembly (3) forms a quantitative limiting area (21) at the feeding position (11), and a predetermined number of workpieces will stay at the feeding position (11) at the quantitative limiting area (21). The feeding position (11) and the stacking position (12) are arranged adjacent to each other; the first transfer component (3) includes a front baffle (31), an end baffle (32) and a feeding rod (33). The front baffle (31) is rotatably mounted on the frame (1) and is located above the feeding component (2). The front baffle (31) is provided with a material passage notch (311) for the workpiece to pass through. The end baffle (32) is mounted on the frame (1) and is spaced apart from the front baffle (31) to form the quantitative limiting area (21). The feeding rod (33) is connected to the front baffle (31). The rotation of the front baffle (31) allows the feeding rod (33) to push the workpiece from the feeding position (11) to the stacking position (12). The heat shrinking assembly (6) is implemented by multiple hot air blowers. The heat melt sealing assembly (7) is arranged adjacent to the heat shrinking assembly (6). The heat melt sealing assembly (7) includes a heat melt upper pressure block (71), a heat melt lower pad block (72), and a lateral folding push rod (73). The heat melt upper pressure block (71) is vertically slidable, and the heat melt lower pad block (72) is vertically slidable. The upper surface of the heat melt lower pad block (72) is used to heat the packaging bag. The heat melt lower pad block (72) cooperates with the heat melt upper pressure block (71) to clamp the packaging bag. The lateral folding push rod (73) is horizontally slidable. The lateral folding push rod (73) is located on the side of the heat melt upper pressure block (71) close to the heat shrinking assembly (6). The two lateral folding push rods (73) move towards each other to close the bag opening from the side.
2. The paper tube packaging machine according to claim 1, characterized in that: The second transfer assembly (4) includes a transfer slide (41), a picking slide (42), a lifting drive (43), and a picking gripper (44). The transfer slide (41) moves along the line connecting the stacking position (12) and the discharge position (13). The picking slide (42) is vertically slidably disposed on the transfer slide (41). The lifting drive (43) is disposed on the transfer slide (41) and is connected to the picking slide (42). The picking gripper (44) is disposed on the picking slide (42), and one picking gripper (44) clamps a workpiece by expanding the inner wall of the workpiece.
3. The paper tube packaging machine according to claim 2, characterized in that: The material-receiving slide (42) includes an upper support plate (421), a lower support plate (422), and a sliding guide rod (423). The upper support plate (421) is located above the transfer slide (41). The lower support plate (422) is fixedly installed with the material-receiving gripper (44), and the material-receiving gripper (44) is located below the lower support plate (422). The two ends of the sliding guide rod (423) are respectively connected to the upper support plate (421) and the lower support plate (422), and the sliding guide rod (423) slides vertically through the transfer slide (41). The lifting drive component (43) includes a lifting motor (431), a drive pulley (432), a tension pulley (433), and a transmission belt (434). The lifting motor (431) is fixedly installed on the transfer slide (41). The drive pulley (432) is connected to the output shaft of the lifting motor (431), and the tension pulley (433) is rotatably mounted on the transfer slide (41); one end of the transmission belt (434) is connected to the upper support plate (421), and the other end of the transmission belt (434) is connected to the lower support plate (422). The transmission belt (434) is serpentinely wound around the drive pulley (432) and the tension pulley (433).
4. The paper tube packaging machine according to claim 1, characterized in that: The bag-feeding mold (5) is slidably mounted on the frame (1), and the movement direction of the bag-feeding mold (5) is perpendicular to the line connecting the discharge position (13) and the heat shrink assembly (6).
5. The paper tube packaging machine according to claim 4, characterized in that: The bag-filling mold (5) includes an upper limit plate (51) and a lower limit plate (52). The upper limit plate (51) and the lower limit plate (52) are U-shaped. The inner sides of the upper limit plate (51) and the lower limit plate (52) are arranged facing each other. The lower limit plate (52) is located on the inner side of the upper limit plate (51). The upper limit plate (51) is vertically slidable relative to the lower limit plate (52).
6. The paper tube packaging machine according to claim 1, characterized in that: The portion of the lateral folding push rod (73) away from the hot melt upper pressure block (71) is located in the area where the heat shrink assembly (6) is located.
7. The paper tube packaging machine according to claim 1, characterized in that: The hot-melt upper pressure block (71) is connected to a guide plate (9). The guide plate (9) is provided with a guide surface (91) having a near stop position and a far stop position. The hot-melt upper pressure block (71) is rotatably connected to a swing rod (10). The rotation axis of the swing rod (10) is perpendicular to the plane in which the hot-melt upper pressure block (71) slides. One end of the swing rod (10) is connected to the lateral folding push rod (73), and the other end of the swing rod (10) abuts against the guide surface (91).