Powder material sewing mechanism

Abstract

The utility model provides a powder material sewing mechanism which comprises a machine frame, a material collecting portion arranged on the machine frame, a sleeve connected to the outlet end of the material collecting portion, a bag conveying assembly arranged below the sleeve and a sewing portion connected to the machine frame, and the bag conveying assembly is driven to slide along the machine frame and is arranged below the sleeve and the sewing portion in a reciprocating alternating mode. The bag conveying assembly comprises a supporting base used for containing packaging bags, thermoplastic parts arranged on the two sides of the supporting base, and a driving assembly used for driving the supporting base to move up and down. When the driving assembly drives the supporting base to move upwards to be in a charging state, the packaging bag is connected to the outer side of the sleeve in a sleeving mode, the two thermoplastic parts are far away from each other, and when the driving assembly drives the supporting base to move downwards to be in a thermoplastic state, the upper end of the packaging bag is separated from the sleeve, and the two thermoplastic parts abut against the packaging bag. The sealing effect of powder materials before packaging is improved, midway transportation is not needed, integration of powder charging and sewing work can be achieved, packaging efficiency is improved, and use cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of powder material packaging technology, and in particular to a powder material sewing mechanism. Background Technology

[0002] Existing powder packaging machines are mainly used for packaging powdered materials. Powder or small granular materials are prone to dust and blockage problems during transportation and processing, which greatly affects the production environment of the workshop, increases the failure rate of equipment, and is not conducive to the production line for material packaging.

[0003] In existing technologies, when using powder packaging machines, the protective bags are manually opened and placed below the outlet pipe of the finished powder product. During the powder filling process, the powder is dispersed to the outside through the gap between the packaging bag and the outlet pipe, which greatly affects the health of the operators and causes dust to spread in the production area, resulting in a poor overall production environment.

[0004] Furthermore, after filling, the bagged powder material needs to be manually placed onto the transport equipment and sent to the sewing machine for sealing. During transport, unsealed bags require specialized jigs; otherwise, the bags are prone to collapse. Because sealed bags vary in size, specialized transport jigs increase costs. If the bags are tied up during transport, they will deform, potentially damaging the sewing equipment and compromising the sealing quality. Utility Model Content

[0005] In view of this, the present invention aims to propose a powder material sewing mechanism to improve the sealing effect of powder materials before packaging, and eliminate the need for intermediate transportation. It can realize the integration of powder loading and sewing work, improve packaging efficiency, and reduce usage costs.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A powder material sewing mechanism includes a frame, a receiving part disposed on the frame, a sleeve connected to the outlet end of the receiving part, a bag feeding assembly disposed below the sleeve, and a sewing part connected to the frame.

[0008] The bag feeding assembly is driven to slide along the frame and is alternately and reciprocally positioned below the sleeve and the sewing section;

[0009] The bag feeding assembly includes a support base for placing the packaging bag, thermoplastic parts disposed on both sides of the support base, and a drive assembly for driving the support base to move up and down.

[0010] When the drive assembly drives the support seat to move upward to the loading state, the packaging bag is sleeved on the outside of the sleeve, and the two thermoplastic parts are far apart from each other. When the drive assembly drives the support seat to move downward to the thermoplastic state, the upper end of the packaging bag is detached from the sleeve, and the two thermoplastic parts abut against the packaging bag.

[0011] Furthermore, the frame is provided with a first module, the bag feeding assembly is connected to the movable end of the first module, and the fixed end of the first module is located below the sleeve and the sewing part;

[0012] The movable end of the first module is connected to a fixing plate, and the fixing plate is provided with two spaced guide bars, with the support seat abutting between the two guide bars.

[0013] Furthermore, the receiving part includes a funnel for receiving materials, a feeding pipe connected to the outlet end of the funnel, the lower end of the feeding pipe extending into the sleeve, the outlet end of the feeding pipe being provided with a cap, and a first driving part being connected to the feeding pipe.

[0014] The power output end of the first drive unit is pivotally connected to a rotating base. One end of the rotating base is pivotally connected to the feeding pipe, and the other end is fixedly connected to the cover.

[0015] Furthermore, a clamping mechanism is also connected to the sleeve. The clamping mechanism includes a mounting bracket connected to the sleeve. A second drive unit is connected to the mounting bracket. Clamping arms are respectively connected to the power output ends at both ends of the second drive unit. The two clamping arms are driven to move closer to or away from the sleeve.

[0016] The end of the clamping arm is provided with clamping members. When the clamping arm is in a clamping state, the two clamping members abut against the outside of the packaging bag and the sleeve.

[0017] Furthermore, the clamping arm includes two spaced-apart curved arms and a crossbar connected between the two curved arms, the crossbar being fixedly connected to the power output end of the second drive unit;

[0018] The two curved arms are respectively disposed on both sides of the sleeve;

[0019] The clamping member includes a pressing member connected to the bent arm, and an arc-shaped plate connected between the two pressing members;

[0020] The inner diameter of the arc-shaped plate is adapted to the outer diameter of the sleeve.

[0021] Furthermore, the support base is provided with an upwardly protruding enclosure, and an accommodating space is formed inside the enclosure, with the bottom of the packaging bag located within the accommodating space.

[0022] Furthermore, the drive assembly includes a third drive unit connected to the fixed plate, a drive wheel pivotally connected to the power output end of the third drive unit, a driven wheel meshing with one side of the drive wheel, and a pivotally connected to the support base and the first linkage assembly.

[0023] A second linkage assembly is pivotally connected between the fixing plate and each of the thermoplastic parts;

[0024] The power output end of the third drive unit is connected to a rotating shaft, and one end of the first connecting rod assembly and the drive wheel are both sleeved on the rotating shaft.

[0025] Furthermore, the first linkage assembly includes a first rod and a second rod that are pivotally connected, the first rod being pivotally connected to the support base and the second rod being sleeved on the pivot shaft.

[0026] Furthermore, the second linkage assembly includes two parallel first long rods and second long rods, one end of the first long rod is pivotally connected to the thermoplastic part, and the other end is sleeved on the rotating shaft;

[0027] One end of the second long rod is pivotally connected to the thermoplastic part, and the other end is pivotally connected to the fixed plate.

[0028] Furthermore, each of the thermoplastic parts has a heating element on one side of the packaging bag.

[0029] Compared with the prior art, this utility model has the following advantages:

[0030] The powder material sewing mechanism of this utility model features a receiving section on the frame, with its lower part positioned inside a sleeve. A drive assembly moves a support base upwards, causing a packaging bag to be inserted onto the outside of the sleeve. At this point, thermoplastic components are positioned on both sides of the packaging bag. During the filling process, the sleeve reduces spilled dust, confining it within the sleeve and minimizing dust pollution to the production environment. After powder filling is complete, the drive assembly moves the support base downwards to a thermoplastic state. As the support base moves downwards, the opening of the packaging bag is positioned between the two thermoplastic components, which abut and compress the bag's outlet for initial sealing. Finally, the bag feeding assembly is driven to slide to the sewing section for sewing. Immediate thermoplastic sealing after filling effectively prevents dust generation and ensures a high-quality seal.

[0031] The powder material sewing mechanism described in this utility model has a simple structure and can be used in powder material production lines or installed on powder packaging machines. This mechanism eliminates the need for intermediate transportation of powder materials between filling and sewing processes, and can integrate powder filling and sewing operations, thereby improving packaging efficiency and reducing operating costs. Attached Figure Description

[0032] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0033] Figure 1 This is a schematic diagram of the structure of the powder material sewing mechanism described in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the receiving section excluding the funnel, as described in an embodiment of the present invention.

[0035] Figure 3 This is a top view of the connection between the clamping mechanism and the sleeve according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the bag feeding assembly described in an embodiment of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Frame; 2. Receiving section; 3. Sleeve; 4. Bag feeding assembly; 5. Sewing section; 6. Clamping mechanism; 7. Fixing plate; 8. Guide bar; 9. First module;

[0039] 201. Funnel; 202. Feeding pipe; 203. Cover; 204. First drive unit; 205. Rotary seat;

[0040] 401. Support base; 402. Thermoplastic part; 403. Drive assembly; 404. Enclosure panel;

[0041] 601. Mounting bracket; 602. Second drive unit; 603. Clamping arm; 604. Clamping component;

[0042] 4021. Heating section;

[0043] 4031, Third drive unit; 4032, Driving wheel; 4033, Driven wheel; 4034, First linkage assembly; 4035, Second linkage assembly; 4036, Rotating shaft;

[0044] 6031, Bending arm; 6032, Crossbar;

[0045] 6041, pressing component; 6042, curved plate;

[0046] 40341, First rod; 40342, Second rod;

[0047] 40351, the first long pole; 40352, the second long pole. Detailed Implementation

[0048] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0049] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "back," 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, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0051] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] This embodiment relates to a powder material sewing mechanism, which, as a whole, is as follows: Figures 1 to 4 As shown, the sewing mechanism includes a frame 1, a receiving part 2 on the frame 1, a sleeve 3 connected to the outlet end of the receiving part 2, a bag feeding assembly 4 located below the sleeve 3, and a sewing part 5 connected to the frame 1. The bag feeding assembly 4 is driven to slide along the frame 1 and is alternately arranged below the sleeve 3 and the sewing part 5.

[0053] The bag feeding assembly 4 includes a support base 401 for placing the packaging bag, thermoplastic parts 402 disposed on both sides of the support base 401, and a drive assembly 403 for driving the support base 401 to move up and down. When the drive assembly 403 drives the support base 401 to move upward to the loading state, the packaging bag is sleeved on the outside of the sleeve 3, and the two thermoplastic parts 402 are far apart from each other. When the drive assembly 403 drives the support base 401 to move downward to the thermoplastic state, the upper end of the packaging bag is detached from the sleeve 3, and the two thermoplastic parts 402 abut against the packaging bag.

[0054] In this embodiment, the powder material sewing mechanism features a receiving section 2 mounted on the frame 1, with its lower portion positioned within a sleeve 3. A drive assembly 403 moves a support base 401 upwards, inserting a packaging bag onto the outside of the sleeve 3. Thermoplastic components 402 are positioned on both sides of the packaging bag. During the filling process, the sleeve 3 minimizes spilled dust, confining it within the sleeve 3 and reducing dust pollution to the production environment. After powder filling is complete, the drive assembly 403 moves the support base 401 downwards to a thermoplastic state. As the support base 401 moves downwards, the opening of the packaging bag is positioned between the two thermoplastic components 402. The contact and compression of the two thermoplastic components 402 provide initial sealing to the bag's outlet. Finally, the bag feeding assembly 4 is driven to slide to the sewing section 5 for sewing. Immediate thermoplastic sealing after filling effectively prevents dust generation and ensures a good sewing effect.

[0055] Based on the above overview, the powder material sewing mechanism of this embodiment has a simple structure and can be used in a powder material production line or installed on a powder packaging machine. This mechanism eliminates the need for intermediate transportation of powder materials during the filling and sewing process, and can integrate powder filling and sewing operations, thereby improving packaging efficiency and reducing operating costs.

[0056] As a preferred embodiment, such as Figure 1 As shown, the frame 1 is equipped with a first module 9, and the bag feeding assembly 4 is connected to the movable end of the first module 9. The fixed end of the first module 9 is located below the sleeve 3 and the sewing part 5. The movable end of the first module 9 is connected to a fixing plate 7, and the fixing plate 7 is provided with two spaced guide strips 8. The support base 401 abuts between the two guide strips 8. The support base 401 is rectangular in shape, so as to... Figure 1 With the direction as a reference, the two guide bars 8 are vertically connected to the fixed plate 7, and the support base 401 slides along the height direction of the two guide bars 8.

[0057] Still Figure 1 As shown, the receiving part 2 includes a funnel 201 for receiving materials, a feeding pipe 202 connected to the outlet end of the funnel 201, the lower end of the feeding pipe 202 extending into the sleeve 3, and a cap 203 provided at the outlet end of the feeding pipe 202. A first driving part 204 is also connected to the feeding pipe 202. A rotating seat 205 is pivotally connected to the power output end of the first driving part 204. One end of the rotating seat 205 is pivotally connected to the feeding pipe 202, and the other end is fixedly connected to the cap 203.

[0058] like Figure 1 and Figure 2As shown, the power output end of the first drive unit 204 is connected to a pull rod. The first drive unit 204 uses a telescopic cylinder, and the pull rod is pivotally connected to the rotary seat 205. The material is metered and conveyed to the funnel 201. After the conveying is completed, the first drive unit 204 pulls the pull rod upward, and the material enters the packaging bag fitted on the outside of the sleeve 3 through the feeding pipe 202. In order to improve the sealing, a sealing plate is provided on the upper part of the sleeve 3, which is fitted on the outside of the feeding pipe 202, thereby preventing the powder from floating out from the gap between the sleeve 3 and the feeding pipe 202 during the conveying process.

[0059] Preferably, such as Figure 1 and Figure 3 As shown, a clamping mechanism 6 is also connected to the sleeve 3. The clamping mechanism 6 includes a mounting bracket 601 connected to the sleeve 3. A second drive unit 602 is connected to the mounting bracket 601. The power output ends of the second drive unit 602 are respectively connected to clamping arms 603. The two clamping arms 603 are driven to approach or move away from the sleeve 3. The ends of the clamping arms 603 are provided with clamping members 604. When the clamping arms 603 are in a clamping state, the two clamping members 604 abut against the outside of the packaging bag and the sleeve 3.

[0060] like Figure 3 As shown, in this embodiment, the mounting bracket 601 consists of four square tubes extending outward from the outer wall of the sleeve 3 and a rectangular frame surrounding the four square tubes. The second drive unit 602 is positioned above the mounting bracket 601. In this embodiment, the second drive unit 602 is a hydraulic cylinder with dual output rods. Figure 1 As shown, the clamping arm 603 extends downward from the output rod of the second drive unit 602 and extends toward the sleeve 3. The clamping member 604 is provided on the extension section of the clamping arm 603 to facilitate quick clamping of the packaging bag.

[0061] Furthermore, such as Figure 1 and Figure 3 As shown, the clamping arm 603 includes two spaced-apart curved arms 6031 and a crossbar 6032 connected between the two curved arms 6031. The crossbar 6032 is fixedly connected to the power output end of the second drive unit 602. The two curved arms 6031 are respectively disposed on both sides of the sleeve 3. The clamping member 604 includes a pressing member 6041 connected to the curved arms 6031 and an arc-shaped plate 6042 connected between the two pressing members 6041. The inner diameter of the arc-shaped plate 6042 is adapted to the outer diameter of the sleeve 3. The pressing member 6041 is a rectangular plate longitudinally connected to the arc plate 6042. By setting the clamping member 604 with the arc plate 6042 and the pressing member 6041, the pressing member 6041 clamps the two ends of the packaging bag, and the arc plate 6042 squeezes the packaging bag to the outside of the sleeve 3, effectively preventing dust from drifting out from the gap between the packaging bag and the sleeve 3, improving the sealing of the powder material before sewing, and ensuring a good production environment.

[0062] To provide placement options for packaging bags and improve filling accuracy, such as Figure 4 As shown, the support base 401 is provided with an upwardly protruding surrounding plate 404, and an accommodating space is formed inside the surrounding plate 404, with the bottom of the packaging bag located within the accommodating space. In this embodiment, the surrounding plate 404 is made of thin plate forming a ring and fixed to the support base 401.

[0063] like Figure 4 As shown, the drive assembly 403 includes a third drive section 4031 connected to the fixed plate 7, a driving wheel 4032 pivotally connected to the power output end of the third drive section 4031, a driven wheel 4033 meshing with one side of the driving wheel 4032, and a second link assembly 4035 pivotally connected to the support base 401 and the first link assembly 4034. The fixed plate 7 and each thermoplastic part 402 are pivotally connected to a second link assembly 4035. The power output end of the third drive section 4031 is connected to a rotating shaft 4036, and one end of the first link assembly 4034 and the driving wheel 4032 are both sleeved on the rotating shaft 4036.

[0064] In this embodiment, the third drive unit 4031 employs a servo motor. To improve the motion stability of the support base 401 and the thermoplastic part 402, this embodiment provides two sets of second linkage assemblies 4035 for connecting the thermoplastic part 402 and the fixing plate 7 respectively. Correspondingly, two sets of first linkage assemblies 4034 are provided to correspond with the second linkage assemblies 4035. Furthermore, two sets are provided for the third drive unit 4031, the drive wheel 4032, and the rotating shaft 4036. Along the thickness direction of the support base 401, two sets of first linkage assemblies 4034 and second linkage assemblies 4035 are respectively provided on both sides of the support base 401.

[0065] In this embodiment, the driving wheel 4032 and the driven wheel 4033 are arranged opposite to each other, and both have toothed portions on their edges to facilitate meshing and transmission. Of course, in this embodiment, a third drive unit 4031 can also be provided on one of its rotating shafts 4036 to reduce energy consumption. The movement of the support base 401 and the thermoplastic part 402 is achieved through the meshing of the driving wheel 4032 and the driven wheel 4033.

[0066] Furthermore, such as Figure 4 As shown, the first linkage assembly 4034 includes a first rod 40341 ​​and a second rod 40342 pivotally connected. The first rod 40341 ​​is pivotally connected to the support base 401, and the second rod 40342 is sleeved on the rotating shaft 4036. By setting two pivotally connected first rods 40341, the flexibility of the support base 401 in moving up and down is improved. The first rod 40341 ​​is connected to the outside of the support plate, and the second rod 40342 is sleeved on the rotating shaft 4036 and fixed in the corresponding position by set screws, so that the second rod 40342 is parallel to the fixed plate 7.

[0067] In addition, such as Figure 4 As shown, the second linkage assembly 4035 includes two parallel long rods 40351 and 40352. One end of the first long rod 40351 is pivotally connected to the thermoplastic part 402, and the other end is sleeved on the rotating shaft 4036. One end of the second long rod 40352 is pivotally connected to the thermoplastic part 402, and the other end is pivotally connected to the fixing plate 7. A set screw is also provided between the first long rod 40351 and the rotating shaft 4036 to fix the first long rod 40351 at a corresponding position on the rotating shaft 4036. The first long rod 40351 is located outside the second rod body 40342, and the second rod body 40342 is located outside the first rod body 40341 ​​to avoid interference between the rods. Since the components of the first linkage assembly 4034 and the second linkage assembly 4035 move in different parallel planes, shims or bushings need to be added for adjustment.

[0068] In addition, each thermoplastic part 402 in this embodiment has a heating part 4021 abutting against one side of the packaging bag. The heating part 4021 in this embodiment adopts electric heating, but gas heating, microwave heating and other methods in the prior art can also be used to seal the packaging bag.

[0069] As described above, during the filling process, the clamping member 604 clamps the opening of the packaging bag. After filling is completed, the second drive unit 602 drives the two opposing clamping members 604 away from each other. At this time, the third drive unit 4031 drives the support base 401 to move down, and the two thermoplastic parts 402 move closer to each other. Finally, when the support base 401 moves to the thermoplastic state, the two thermoplastic parts 402 squeeze the packaging bag between them for thermoplasticization, thereby realizing the immediate thermoplasticization after the powder material is filled. Finally, it is transported to the sewing unit 5 through the first module 9 for sewing, which improves the sewing effect and firmness of the packaging bag, effectively avoids dust leakage, and maintains the production environment.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powder material sewing mechanism, characterized in that: Includes a frame (1), a receiving part (2) provided on the frame (1), a sleeve (3) connected to the outlet end of the receiving part (2), a bag feeding assembly (4) provided below the sleeve (3), and a sewing part (5) connected to the frame (1). The bag feeding assembly (4) is driven to slide along the frame (1) and is alternately arranged below the sleeve (3) and the sewing part (5); The bag delivery assembly (4) includes a support base (401) for placing the packaging bag, thermoplastic parts (402) disposed on both sides of the support base (401), and a drive assembly (403) for driving the support base (401) to move up and down. When the drive assembly (403) drives the support base (401) to move upward to the loading state, the packaging bag is sleeved on the outside of the sleeve (3), and the two thermoplastic parts (402) are far apart from each other. When the drive assembly (403) drives the support base (401) to move downward to the thermoplastic state, the upper end of the packaging bag is detached from the sleeve (3), and the two thermoplastic parts (402) abut against the packaging bag.

2. The powder material sewing mechanism according to claim 1, characterized in that: The frame (1) is provided with a first module (9), the bag feeding assembly (4) is connected to the movable end of the first module (9), and the fixed end of the first module (9) is located below the sleeve (3) and the sewing part (5); The movable end of the first module (9) is connected to a fixing plate (7), and the fixing plate (7) is provided with two spaced guide bars (8), and the support base (401) abuts between the two guide bars (8).

3. The powder material sewing mechanism according to claim 2, characterized in that: The receiving part (2) includes a funnel (201) for receiving materials, a feeding pipe (202) connected to the outlet end of the funnel (201), the lower end of the feeding pipe (202) extending into the sleeve (3), the outlet end of the feeding pipe (202) is provided with a cap (203), and a first driving part (204) is also connected to the feeding pipe (202); The power output end of the first drive unit (204) is pivotally connected to a rotating seat (205). One end of the rotating seat (205) is pivotally connected to the feeding pipe (202), and the other end is fixedly connected to the cover (203).

4. The powder material sewing mechanism according to claim 3, characterized in that: The sleeve (3) is also connected to a clamping mechanism (6). The clamping mechanism (6) includes a mounting bracket (601) connected to the sleeve (3). A second drive unit (602) is connected to the mounting bracket (601). The power output ends of the second drive unit (602) are respectively connected to clamping arms (603). The two clamping arms (603) are driven to approach or move away from the sleeve (3). The end of the clamping arm (603) is provided with clamping members (604). When the clamping arm (603) is in a clamping state, the two clamping members (604) abut against the outside of the packaging bag and the sleeve (3).

5. The powder material sewing mechanism according to claim 4, characterized in that: The clamping arm (603) includes two spaced-apart curved arms (6031) and a crossbar (6032) connected between the two curved arms (6031). The crossbar (6032) is fixedly connected to the power output end of the second drive unit (602). The two curved arms (6031) are respectively disposed on both sides of the sleeve (3); The clamping member (604) includes a pressing member (6041) connected to the bent arm (6031) and an arc-shaped plate (6042) connected between the two pressing members (6041); The inner diameter of the arc plate (6042) is adapted to the outer diameter of the sleeve (3).

6. The powder material sewing mechanism according to claim 2, characterized in that: The support base (401) is provided with an upwardly protruding enclosure (404), and an accommodating space is formed inside the enclosure (404), and the bottom of the packaging bag is located in the accommodating space.

7. The powder material sewing mechanism according to claim 6, characterized in that: The drive assembly (403) includes a third drive unit (4031) connected to the fixed plate (7), an active drive wheel (4032) pivotally connected to the power output end of the third drive unit (4031), a driven drive wheel (4033) meshing with one side of the active drive wheel (4032), and a first linkage assembly (4034) pivotally connected to the support base (401). A second linkage assembly (4035) is pivotally connected between the fixing plate (7) and each of the thermoplastic parts (402); The power output end of the third drive unit (4031) is connected to a rotating shaft (4036), and one end of the first connecting rod assembly (4034) and the active rotating wheel (4032) are both sleeved on the rotating shaft (4036).

8. The powder material sewing mechanism according to claim 7, characterized in that: The first linkage assembly (4034) includes a first rod (40341) and a second rod (40342) pivotally connected. The first rod (40341) is pivotally connected to the support (401), and the second rod (40342) is sleeved on the pivot (4036).

9. The powder material sewing mechanism according to claim 8, characterized in that: The second linkage assembly (4035) includes two parallel first long rods (40351) and second long rods (40352), one end of the first long rod (40351) is pivotally connected to the thermoplastic part (402), and the other end is sleeved on the rotating shaft (4036); One end of the second long rod (40352) is pivotally connected to the thermoplastic part (402), and the other end is pivotally connected to the fixed plate (7).

10. The powder material sewing mechanism according to claim 1, characterized in that: Each of the thermoplastic parts (402) has a heating element (4021) abutting against one side of the packaging bag.

Images