A new type of packaging machine

By designing a new type of labeling and packaging machine, which utilizes a backing feeding module, a top film feeding module, a dressing feeding module, and a pressing module, combined with a vibration feeding mechanism and a robotic arm, the automatic preparation of multi-layer dressings is realized, solving the problem of low production efficiency in existing technologies and improving production efficiency.

CN224466707UActive Publication Date: 2026-07-07DONGGUAN GOSUNM MACHINERY EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN GOSUNM MACHINERY EQUIP CO LTD
Filing Date
2025-07-08
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing dressing preparation systems cannot automatically prepare multi-layer dressings, resulting in low production efficiency and requiring manual application.

Method used

Design a novel labeling and packaging machine, including a backing feeding module, a top film feeding module, a dressing feeding module, a pressing module, and a cutting module. The machine achieves automatic bonding and cutting of multi-layer dressings through a vibrating feeding mechanism and a robotic arm.

Benefits of technology

It enables the automated preparation of multi-layer dressings, improving production efficiency and reducing manual intervention.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224466707U_ABST
    Figure CN224466707U_ABST
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Abstract

The utility model relates to a novel pasting packaging machine, the novel pasting packaging machine of utility model includes: backing feeding module, two top film feeding module, dressing feeding module, first compression module, second compression module, cutting module, the second compression module is equipped with two top film feeding module's discharge port side, the first compression module and backing feeding module's discharge port are equipped with second compression module side, cutting module is equipped with first compression module side, and the discharge port of dressing feeding module is equipped with between cutting module and first compression module. The novel pasting packaging machine of utility model has the advantages that can automatically adhere to multilayer dressing, and automatically prepares multilayer dressing pasting.
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Description

Technical Field

[0001] This utility model relates to the field of labeling and packaging preparation equipment, and in particular to a novel labeling and packaging machine. Background Technology

[0002] Dressings are commonly used medical supplies, typically for external application of medications to aid in the healing of diseases. A typical dressing consists of a backing, a dressing material, and a protective top layer; the dressing material usually provides the primary therapeutic effect. To enhance efficacy, some treatments incorporate multi-layered dressings, allowing different layers to provide varying therapeutic benefits to the affected area.

[0003] However, existing dressing preparation systems cannot prepare multi-layer dressings, requiring manual application of multiple layers, resulting in low production efficiency. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a new type of labeling and packaging machine, which has the advantages of automatically bonding multi-layer dressings and automatically preparing multi-layer dressing patches.

[0005] A novel labeling and packaging machine includes a backing feeding module, two top film feeding modules, a dressing feeding module, a first pressing module, a second pressing module, and a cutting module. The second pressing module is located beside the outlets of the two top film feeding modules. The outlets of the first pressing module and the backing feeding module are located beside the second pressing module. The cutting module is located beside the first pressing module, and the outlet of the dressing feeding module is located between the cutting module and the first pressing module. The dressing feeding module includes a dressing conveying mechanism, several vibrating feeding mechanisms, and a dressing feeding mechanism. The end of the dressing conveying mechanism is located beside the rear end of the first pressing module, each of the vibrating feeding mechanisms is located beside the dressing conveying mechanism, and the dressing feeding mechanism is located beside the end of the dressing conveying mechanism.

[0006] The novel labeling and packaging machine of this utility model feeds multiple layers of dressing onto the backing through a dressing feeding module, thereby achieving the effect of automatically preparing multi-layer dressing patches.

[0007] Furthermore, the vibratory feeding mechanism includes a vibratory plate, a first conveyor belt assembly, and a first feeding robotic arm; the starting end of the first conveyor belt assembly is located beside the outlet of the vibratory plate, and the ending end is located beside the dressing conveying mechanism; the first feeding robotic arm is located at the end of the first conveyor belt assembly and beside the dressing conveying mechanism, and is used to grasp the dressing.

[0008] Furthermore, the first feeding robotic arm includes a first guide rail and a first gripping arm; one end of the first guide rail is located beside the end of the first conveyor belt assembly, and the other end is located beside the dressing conveying mechanism; the first gripping arm is slidably connected to the first guide rail; a first gripping device is provided at the top of the first gripping arm, and the first gripping device faces directly downward.

[0009] Furthermore, the dressing delivery mechanism is provided with several dressing fixtures at intervals.

[0010] Furthermore, the dressing feeding module also includes a dressing transfer mechanism; the dressing transfer mechanism includes a first transfer seat, a second transfer seat, a transfer guide rail, and a transfer gripping arm; the first transfer seat is located beside the end of the dressing conveying mechanism, the second transfer seat is located beside the first transfer seat, and the distance between the second transfer seat and the first transfer seat is equal to the distance between the first transfer seat and the end of the dressing conveying mechanism; the transfer guide rail is parallel to the line connecting the first transfer seat and the second transfer seat; the transfer gripping arm is slidably connected to the transfer guide rail, so that the transfer gripping arm can slide above the first transfer seat and the second transfer seat.

[0011] Furthermore, the transfer gripping arm is equipped with a second gripping device and a third gripping device, and the distance between the second gripping device and the third gripping device is equal to the distance between the second transfer seat and the first transfer seat.

[0012] Furthermore, the dressing feeding mechanism includes a second guide rail and a second gripping arm; one end of the second guide rail is located next to the second transfer seat, and the other end is located at the rear end of the first pressing module; the second gripping arm is slidably connected to the second guide rail, and a fourth gripping device is provided at the top of the second gripping arm, with the fourth gripping device facing directly downward.

[0013] Furthermore, the top film feeding module includes a top film unwinding roller and a top film folding mechanism; the top film unwinding roller is located at the front end of the first pressing module and is used to place the top film roll; the top film folding mechanism is located between the top film unwinding roller and the first pressing module; the top film folding mechanism is used to fold the top film strip released by the top film unwinding roller.

[0014] Furthermore, the top film folding mechanism includes a first folding roller, a second folding roller, a first folding baffle, and a folding pressure rod; the second folding roller is located on the side of the first folding roller away from the top film unwinding roller; the first folding baffle is located between the first folding roller and the second folding roller, with one end close to the first folding roller and the other end bent towards the second folding roller; the fixed end of the folding pressure rod is fixed to the side of the first folding baffle, and the free end extends into the inside of the first folding baffle and is adjacent to the first folding baffle, forming a first folding channel between the folding pressure rod and the first folding baffle.

[0015] Furthermore, it also includes at least one third pressing module, which is located between the end of the dressing feeding module and the cutting module; the third pressing module includes a concave pressing roller and a lower pressing roller, the concave pressing roller is located above the lower pressing roller and is parallel to and adjacent to the lower pressing roller; the concave pressing roller has a concave portion in the middle, the diameter of the concave portion is smaller than the diameters on both sides of the concave pressing roller, and the width of the concave portion is larger than the width of the backing.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a novel labeling and packaging machine according to an embodiment of the present utility model;

[0018] Figure 2 This is a side view of a novel mounting and packaging machine according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the dressing feeding module according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the vibration feeding mechanism according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the dressing transfer mechanism according to an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the top membrane folding mechanism according to an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the cutting module according to an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the third pressing module in an embodiment of the present invention. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to thermally conductive connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Example

[0029] Please see Figures 1 to 8 This application provides a novel mounting and packaging machine, including a backing feeding module 1, two top film feeding modules 2, a dressing feeding module 3, a first pressing module 4, a second pressing module 5, a cutting module 6, and a sealing and packaging module. The backing feeding module 1 is used to feed the backing, and the top film feeding module 2 is used to feed the top film. The second pressing module 5 is located beside the outlets of the two top film feeding modules 2, and is used to arrange the top films released from the two top film feeding modules 2 side-by-side. The outlets of the first pressing module 4 and the backing feeding module 1 are located beside the second pressing module 5. The first pressing module 4 is used to press the side-by-side top film and backing. The cutting module 6 is located beside the first pressing module 4, and the outlet of the dressing feeding module 3 is located between the cutting module 6 and the first pressing module 4. The sealing and packaging module is located beside the cutting module 6.

[0030] Please see Figures 1 to 2Backing feeding module 1 is used to feed backing strips, and top film feeding module 2 is used to feed top film strips. After the two top film strips are placed side by side by the second pressing module 5, they are pressed and bonded together with the backing strip by the first pressing module 4 to form the first material. The two top film strips cover the two ends of one side of the backing strip, exposing the middle of the backing. Dressing feeding module 3 is used to feed dressing onto the middle of the backing of the first material to form the second material. Cutting module 6 cuts the second material horizontally at equal intervals to form the third material. Plastic sealing packaging module is located at the rear end of cutting module 6 and is used to plastic seal the third material.

[0031] Please see Figures 3 to 5 The dressing feeding module 3 includes a dressing conveying mechanism 30, several vibrating feeding mechanisms 31, and a dressing feeding mechanism 33. The vibrating feeding mechanisms 31 are used to feed dressings onto the dressing conveying mechanism 30, and each vibrating feeding mechanism 31 is disposed along the side of the dressing conveying mechanism 30. The dressing feeding mechanism 33 is disposed at the rear end of the dressing conveying mechanism 30 and is used to feed the dressings on the dressing conveying mechanism 30 onto the backing of the first material. In some embodiments, the dressing feeding module 3 includes three vibrating feeding mechanisms 31, and the dressing conveying mechanism 30 is a conveyor belt.

[0032] In other embodiments, a dressing transfer mechanism 32 is also included, which is disposed between the dressing conveying mechanism 30 and the dressing loading mechanism 33, and is used to transfer the dressings transported on the dressing conveying mechanism 30.

[0033] For further details, please refer to Figure 5 The dressing transfer mechanism 32 includes a first transfer seat 321, a second transfer seat 322, a transfer guide rail 323, and a transfer gripping arm 324. A first transfer seat 321 is located beside the end of the dressing conveying mechanism 30, and a second transfer seat 322 is located beside the first transfer seat 321. The distance between the second transfer seat 322 and the first transfer seat 321 is equal to the distance between the first transfer seat 321 and the end of the dressing conveying mechanism 30. A transfer guide rail 323 is parallel to the line connecting the first transfer seat 321 and the second transfer seat 322. A transfer gripping arm 324 is slidably connected to the transfer guide rail 323, allowing the transfer gripping arm 324 to slide above the first transfer seat 321 and the second transfer seat 322. A second gripping device 3241 and a third gripping device 3242 are provided on the transfer gripping arm 324, and the distance between the second gripping device 3241 and the third gripping device 3242 is equal to the distance between the second transfer seat 322 and the first transfer seat 321. In some embodiments, the second gripping device 3241 and the third gripping device 3242 are vacuum suction heads.

[0034] When the multi-layer dressing is delivered to the end of the dressing conveyor 30, the transfer gripping arm 324 slides, causing the second gripping device 3241 to move above the end of the dressing conveyor 30. The second gripping device 3241 grips the multi-layer dressing on the dressing conveyor 30. Subsequently, the transfer gripping arm 324 slides, causing the second gripping device 3241 to move above the first transfer seat 321. After placing the multi-layer dressing on the first transfer seat 321, it returns to its original position. The second gripping device 3241 is then moved above the end of the dressing conveyor 30 again, at which point the third gripping device 3242... Above the first transfer seat 321; then, the second gripping device 3241 grips the multi-layer dressing on the dressing conveying mechanism 30 again, and the third gripping device 3242 grips the multi-layer dressing on the first transfer seat 321; then, the transfer gripping arm 324 slides, causing the second gripping device 3241 to move above the first transfer seat 321 again and place the multi-layer dressing on the first transfer seat 321; at this time, the third gripping device 3242 moves above the second transfer seat 322 and places the multi-layer dressing on the second transfer seat 322.

[0035] Please see Figure 4 The vibratory feeding mechanism 31 includes a vibratory feeder 311, a first conveyor belt assembly 312, and a first feeding robotic arm 313. The first conveyor belt assembly 312 is located at the beginning of the vibratory feeder 311 outlet and at the end of the dressing conveying mechanism 30. The first feeding robotic arm 313 is located at the end of the first conveyor belt assembly 312 and at the side of the dressing conveying mechanism 30, and is used to grasp dressings. In some embodiments, the first feeding robotic arm 313 includes a first guide rail 3131 and a first gripping arm 3132. One end of the first guide rail 3131 is located at the end of the first conveyor belt assembly 312 and the other end is located at the side of the dressing conveying mechanism 30. The first gripping arm 3132 is slidably connected to the first guide rail 3131, so that the first gripping arm 3132 can slide above the end of the first conveyor belt assembly 312 and the dressing conveying mechanism 30. The first gripping arm 3132 has a first gripping device at its top end, which faces directly downward and is used to absorb dressings; in some embodiments, the first gripping device is a vacuum suction head.

[0036] In some embodiments, the dressing conveying mechanism 30 is provided with a plurality of dressing fixtures at intervals, and each vibrating feeding mechanism 31 sequentially feeds different dressings into the dressing fixtures, thereby forming a multi-layer dressing.

[0037] The dressing feeding mechanism 33 includes a second guide rail 331 and a second gripping arm 332. One end of the second guide rail 331 is located beside the second transfer seat 322, and the other end is located at the rear end of the first pressing module 4. The second gripping arm 332 is slidably connected to the second guide rail 331, so that the second gripping arm 332 can slide between the second transfer seat 322 and the rear end of the first pressing module 4. A fourth gripping device is provided at the top of the second gripping arm 332, which faces directly downward and is used to pick up the dressing. In some embodiments, the fourth gripping device is a vacuum suction head.

[0038] When the dressing feeding module 3 is working, different vibrating feeding mechanisms 31 sequentially transport the dressing to the dressing conveying mechanism 30, stacking them into multiple layers of dressing; then the dressing transfer mechanism 32 transports the dressing to the second transfer seat 322, and the dressing feeding mechanism 33 transports the multiple layers of dressing on the second transfer seat 322 to the backing of the second material.

[0039] Furthermore, the backing feeding module 1 includes a backing unwinding roller for holding the backing roll; the backing unwinding roller is located at the front end of the first pressing module 4. In some embodiments, the backing feeding module 1 further includes at least one transfer roller, and the backing strips unwound from the backing roll pass around the transfer roller in sequence before entering the first pressing module 4.

[0040] Furthermore, the top film feeding module 2 includes a top film unwinding roller 21 and a top film folding mechanism 22. The top film unwinding roller 21 is located at the front end of the first pressing module 4 and is used to hold the top film roll. The top film folding mechanism 22 is located between the top film unwinding roller 21 and the first pressing module 4; the top film folding mechanism 22 is used to fold the top film strip released from the top film unwinding roller 21, so that when the top film strips on both sides are bonded to the backing strip, the middle part of the backing is exposed, reserving space for multi-layer dressing.

[0041] Please see Figure 6 Furthermore, the top film folding mechanism 22 includes a first folding roller 221, a second folding roller 222, a first folding baffle 223, and a folding pressure bar 224. The second folding roller 222 is located beside the first folding roller 221 on the side away from the top film unwinding roller 21, and the first folding baffle 223 is located between the first folding roller 221 and the second folding roller 222; one end of the first folding baffle 223 is close to the first folding roller 221, and the other end is bent towards the second folding roller 222. One end of the folding pressure bar 224 is fixed to the side of the folding baffle, and the other end extends into the inside of the first folding baffle 223 and is adjacent to the first folding baffle 223, forming a first folding channel between the folding pressure bar 224 and the first folding baffle 223. In some embodiments, the other end of the folding pressure bar 224 is inclined and bent towards the second folding roller 222.

[0042] The top film strip released from the top film unwinding roller 21 is folded in half after passing over the first folding roller 221. One side of the top film strip passes over the folding baffle from the outside and then exits through the second folding roller 222. The other side of the top film strip is folded from the folding baffle near the fixed end of the folding pressure rod 224 to the inside of the folding baffle, passes through the first folding channel, and then exits through the second folding roller 222. The folding pressure rod 224 presses and fixes the side of the top film strip that has passed over the folding baffle, thus guiding the folding of the top film strip.

[0043] In some embodiments, the top film folding mechanism 22 further includes a second folding baffle 225, which is disposed parallel to and opposite to the first folding baffle 223 on the outside of the first folding baffle 223, forming a second folding channel between the second folding baffle 225 and the first folding baffle 223. When one side of the top film strip passes around the folding baffle from the outside of the folding baffle, it passes through the second folding channel.

[0044] Furthermore, both the first pressing module 4 and the second pressing module 5 include an upper pressing roller and a lower pressing roller; the upper pressing roller and the lower pressing roller are arranged in parallel, facing each other and adjacent to each other, and the upper pressing roller and the lower pressing roller will press the material passing between them.

[0045] Please see Figure 7 Furthermore, the cutting module 6 includes a cutting conveyor belt 60, a cutting drive device 61, and a cutting blade 62. The cutting conveyor belt 60 is located at the end of the first pressing module 4 and the dressing loading module 3, and is used to receive and transport materials. The cutting drive device 61 is located above the cutting conveyor belt 60, with its output end facing directly downwards, and the cutting blade 62 is located on the output end of the cutting drive device 61. When the second material passes under the cutting blade 62 driven by the cutting conveyor belt 60, the cutting drive device 61 pushes the cutting blade 62 downwards to cut the material. In some embodiments, the output end of the cutting drive device 61 is also provided with several fixing blocks 63. The fixing blocks 63 are connected to the output end of the cutting drive device 61 by springs and are located beside the cutting blade 62; when the cutting drive device 61 pushes the cutting blade 62 downwards to cut the material, the fixing blocks 63 simultaneously move downwards to fix the material.

[0046] Please see Figure 8In some embodiments, the novel packaging machine of this application further includes at least one third pressing module 7, which is disposed between the other modules and used to press the second material; the at least one third pressing module 7 is disposed between the end of the dressing feeding module 3 and the cutting module 6. The third pressing module 7 includes a concave pressing roller 71 and a lower pressing roller 72. The concave pressing roller 71 is disposed above the lower pressing roller 72 and is parallel to and adjacent to the lower pressing roller 72; the concave pressing roller 71 has a concave portion in the middle, the diameter of which is smaller than the diameters on both sides of the concave pressing roller 71, and the width of which is larger than the width of the backing. When pressing the second material, the concave pressing roller 71 can avoid the dressing in the middle of the backing and press the backing and the top film on both sides.

[0047] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A novel pick-and-place packaging machine characterized in that: The system includes a backing feeding module, two top film feeding modules, a dressing feeding module, a first pressing module, a second pressing module, and a cutting module. The second pressing module is located beside the outlets of the two top film feeding modules. The outlets of the first pressing module and the backing feeding module are located beside the second pressing module. The cutting module is located beside the first pressing module, and the outlet of the dressing feeding module is located between the cutting module and the first pressing module. The dressing feeding module includes a dressing conveying mechanism, several vibrating feeding mechanisms, and a dressing feeding mechanism. The end of the dressing conveying mechanism is located beside the rear end of the first pressing module, and each of the vibrating feeding mechanisms is located beside the dressing conveying mechanism. The dressing feeding mechanism is located beside the end of the dressing conveying mechanism.

2. The new type of packaging machine for applying, according to claim 1, characterized in that: The vibratory feeding mechanism includes a vibratory plate, a first conveyor belt assembly, and a first feeding robotic arm; the starting end of the first conveyor belt assembly is located beside the outlet of the vibratory plate, and the ending end is located beside the dressing conveying mechanism; the first feeding robotic arm is located at the end of the first conveyor belt assembly and beside the dressing conveying mechanism, and is used to grasp the dressing.

3. The novel packaging machine for applying patches according to claim 2, characterized in that: The first feeding robotic arm includes a first guide rail and a first gripping arm; one end of the first guide rail is located beside the end of the first conveyor belt assembly, and the other end is located beside the dressing conveying mechanism; the first gripping arm is slidably connected to the first guide rail; a first gripping device is provided at the top of the first gripping arm, and the first gripping device faces directly downward.

4. The novel pick-and-place packaging machine according to claim 2, characterized in that: The dressing delivery mechanism is provided with several dressing fixtures at intervals.

5. The novel pick-and-place packaging machine according to claim 2, characterized in that: The dressing feeding module further includes a dressing transfer mechanism; the dressing transfer mechanism includes a first transfer seat, a second transfer seat, a transfer guide rail, and a transfer gripping arm; the first transfer seat is located beside the end of the dressing conveying mechanism, the second transfer seat is located beside the first transfer seat, and the distance between the second transfer seat and the first transfer seat is equal to the distance between the first transfer seat and the end of the dressing conveying mechanism; the transfer guide rail is parallel to the line connecting the first transfer seat and the second transfer seat; the transfer gripping arm is slidably connected to the transfer guide rail, so that the transfer gripping arm can slide above the first transfer seat and the second transfer seat.

6. The novel pick-and-place packaging machine according to claim 5, characterized in that: The transfer gripping arm is equipped with a second gripping device and a third gripping device, and the distance between the second gripping device and the third gripping device is equal to the distance between the second transfer seat and the first transfer seat.

7. The novel pick-and-place packaging machine according to claim 5, characterized in that: The dressing feeding mechanism includes a second guide rail and a second gripping arm; one end of the second guide rail is located next to the second transfer seat, and the other end is located at the rear end of the first pressing module; the second gripping arm is slidably connected to the second guide rail, and a fourth gripping device is provided at the top of the second gripping arm, with the fourth gripping device facing directly downward.

8. The novel pick-and-place packaging machine of claim 1, wherein: The top film feeding module includes a top film unwinding roller and a top film folding mechanism; the top film unwinding roller is located at the front end of the first pressing module and is used to place the top film roll; the top film folding mechanism is located between the top film unwinding roller and the first pressing module; the top film folding mechanism is used to fold the top film strip released by the top film unwinding roller.

9. The novel pick-and-place packaging machine according to claim 8, characterized in that: The top film folding mechanism includes a first folding roller, a second folding roller, a first folding baffle, and a folding pressure rod; the second folding roller is located next to the first folding roller on the side away from the top film unwinding roller; the first folding baffle is located between the first folding roller and the second folding roller, with one end close to the first folding roller and the other end bent towards the second folding roller; the fixed end of the folding pressure rod is fixed to the side of the first folding baffle, and the free end extends into the inside of the first folding baffle and is adjacent to the first folding baffle, forming a first folding channel between the folding pressure rod and the first folding baffle.

10. The novel pick-and-place packaging machine according to claim 1, characterized in that: It also includes at least one third pressing module, which is located between the end of the dressing feeding module and the cutting module; the third pressing module includes a concave pressing roller and a lower pressing roller, the concave pressing roller is located above the lower pressing roller and is parallel to and adjacent to the lower pressing roller; the concave pressing roller has a concave portion in the middle, the diameter of the concave portion is smaller than the diameters on both sides of the concave pressing roller, and the width of the concave portion is larger than the width of the backing.