Round corner packaging machine for powder particles

Abstract

The utility model relates to the technical field of packaging machines, and discloses a fillet packaging machine for powder particles, which is characterized in that a rolling frame mechanism opposite to a fillet material pipe is arranged at the upper end of a support of a packaging frame, and a back sealing mechanism opposite to a back plate of the fillet material pipe is arranged at the front end of the support of the packaging frame; a traction mechanism opposite to a sealing strip of the back sealing mechanism is arranged in the middle of a support of the packaging frame, and two sealing and cutting mechanisms are arranged at the upper end of a rack of the cutting table in a horizontally opposite mode. The packaging bag is rolled and unrolled based on the rolling frame mechanism, hot-pressing back sealing is conducted on the packaging bag based on the back sealing mechanism, the packaging bag is made to form a circular sealing bag type, the packaging bag is made to circularly transmit in the direction of a fillet material pipe under traction and driving of the traction mechanism, and then the packaging bag is made to be in a circular sealing bag shape based on opposite-pressing type sealing and cutting performance of the sealing and cutting mechanism. And the packaging bag filled with the powder is subjected to hot-pressing sealing in an opposite-pressing mode and is synchronously cut, so that the powder bagging work is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a rounded corner packaging machine for powder particles. Background Art

[0002] The application scope of the rounded corner packaging machine is widely used in food, daily chemical, medicine, electronics and other industries. It is suitable for the packaging of various items. It is not only suitable for the packaging of various liquids, but also for the packaging of various powders, such as the sealing packaging of bagged powders, powders, etc. Therefore, the rounded corner packaging machine plays an important role in the terminal packaging field. For example, as shown in the ten-row back-sealed rounded corner powder packaging machine (public announcement number CN218967393U) disclosed in the China Patent Network, this type of device, after packaging the powder, pushes the flexibly replaceable cutter to the knife seat through the telescopic braking action of the cylinder in the cutting part to cut the packaged bagged powder, and performs daily cutting of bagged powder in advance and flexible replacement of the cutter.

[0003] However, there are still some shortcomings in the above-mentioned patents and the rounded corner packaging machines adopted in the existing market: the existing method of using a single-sided cutter to cut the packaged bagged powder is that the cutter needs to push the bagged powder to the knife seat and use the overlap with the knife seat to perform the cutting work. Since the bagged powder deflects during the pushing process, it is very easy for the cutting mouth to deflect, resulting in uneven cutting mouth levels, causing the bag seal to be damaged and open. To this end, those skilled in the art provide a rounded corner packaging machine for powder particles to solve the problems raised in the above background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a rounded corner packaging machine for powder particles, which can effectively solve the problem of poor sealing and cutting stability of the existing rounded corner packaging machines in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a rounded corner packaging machine for powder particles, comprising a packaging frame and a rounded corner material tube installed at the front end of the packaging frame;

[0006] The upper end of the support of the packaging rack is provided with a material bin mechanism which is in communication with the rounded material pipe;

[0007] The upper end of the support of the packaging rack is provided with a roll rack mechanism opposite to the rounded material tube;

[0008] The front end of the support of the packaging rack is provided with a back sealing mechanism facing the back plate of the rounded material tube;

[0009] A traction mechanism is provided in the middle of the support of the packaging rack, which is opposite to the sealing strip of the back sealing mechanism;

[0010] The lower end of the support of the packaging rack is provided with a cutting table vertically opposite to the rounded material tube, and the upper end of the cutting table frame is provided with two sets of sealing and cutting mechanisms in a horizontally opposite form;

[0011] The sealing and cutting mechanism includes a support seat, a clamping cylinder is arranged in the middle of the support seat, and the telescopic end of the clamping cylinder is fixedly connected to the top support platform, guide sleeves are symmetrically arranged on both sides of the support seat, and the shaft sleeve of the guide sleeve is internally slidably connected with an arm force guide rod, the arm force guide rod passes through the top support platform and is fixedly connected to the fixed platform, and the top end of the arm rod of the arm force guide rod is sleeved with a compression spring which elastically presses against the top support platform, a heat sealing strip is arranged at the front end of the fixed platform, fixed support rods are arranged at both ends of the frame of the top support platform, and a cutting knife with a built-in heat sealing strip is arranged at the top end of the arm rod of the fixed support rod.

[0012] As a further solution of the utility model: a storage groove for a built-in cutting knife is provided in the middle of the sealing portion of the heat sealing strip.

[0013] As a further solution of the utility model: the winding rack mechanism includes a winding rack, the upper end of the winding rack bracket is rotatably connected to the winding shaft, and the upper end of the winding rack bracket is provided with a first motor opposite to the winding shaft, the first motor and the winding shaft are connected to each other through a first transmission belt, and tensioning cylinders are symmetrically provided on both sides of the winding rack bracket, and a tensioning roller is provided at the telescopic end of the tensioning cylinder.

[0014] As a further solution of the utility model: the back sealing mechanism includes horizontally opposite front support frames, a guide rod is arranged between the two groups of the front support frames, and the outer sides of the guide rods of the guide rods are symmetrically slidably connected with guide slides, heat-sealing back strips are symmetrically arranged between the two groups of the guide slides, and a matching cylinder for supporting the guide slide is arranged in the middle of the bracket of the front support frame.

[0015] As a further solution of the utility model: the traction mechanism includes two groups of transmission shafts symmetrically arranged along the direction of the rounded material pipe discharge port, the front ends of the shafts of the two groups of transmission shafts are provided with traction wheels, and the rear ends of the shafts of the two groups of transmission shafts are provided with mutually meshing matching gears, and a second motor fixed to the back plate of the packaging rack is installed on one side of the shaft of the transmission shaft, and the second motor and the transmission shaft are connected through a second transmission belt.

[0016] As a further solution of the utility model: a discharge tray is installed at the bottom end of the support of the packaging rack, facing the discharge port of the cutting table.

[0017] As a further scheme of the utility model: the silo mechanism includes a silo and a loading flap installed on the silo port, the cover plate of the loading flap is symmetrically installed with a hot fan, the middle part of the silo body is rotatably connected with a stirring paddle, and the conical bottom end of the silo is rotatably connected with a spiral loading paddle, the conical bottom of the silo is provided with a discharge pipe opening along one end of the blade of the spiral loading paddle, and the silo bottom is provided with a discharge conduit connected to the rounded material pipe along the discharge direction of the discharge pipe opening, a pushing cylinder is arranged inside the pipe of the discharge conduit, and a discharge push head is arranged at the telescopic end of the pushing cylinder.

[0018] As a further solution of the utility model: the stirring paddle is connected to the spiral feeding paddle through a synchronous belt transmission, and a synchronous motor fixed on the silo is installed at one end of the shaft of the stirring paddle.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] 1. When the utility model utilizes the rounded corner packaging machine for packaging, the packaging bag is rolled up and unrolled based on the roll frame mechanism, and is rolled up and unrolled along the rounded corner material tube. Then, while rolling up and unrolling, the packaging bag is hot-pressed and back-sealed based on the back-sealing mechanism to form a circular sealed bag style. The packaging bag at the back is circulated along the direction of the rounded corner material tube under the traction and drive of the traction mechanism. Then, the powder is quantitatively filled into the packaging bag using the rounded corner material tube. After the powder is loaded, the loaded packaging bag is hot-pressed and sealed in the form of pressure and cut synchronously based on the pressure-type sealing and cutting performance of the sealing and cutting mechanism to complete the powder bagging work. The loading and bagging process is coherent and complete, and can effectively reduce the leakage of powder and residual leakage caused by loading.

[0021] 2. When the utility model seals the bagged powder, based on the engagement of the heat-sealing strips in the sealing and cutting mechanism, the packaging bag is sealed by counter-pressure heat pressure. While sealing, the packaging bag is limited and fixed to keep the loading state in a vertical state. Then, under the continuous counter-pressure effect, the cutting knife is exposed to perform synchronous cutting on the sealed packaging bag. The sealing and cutting stability is better, and the integrated linkage performance is higher, which can improve production efficiency.

[0022] 3. When the utility model is feeding powder materials, based on the combination of the spiral feeding paddle and the stirring paddle in the silo mechanism, on the one hand, the powder particles are discharged into the discharge duct in a spiral quantitative feeding manner, and then the powder particles are pushed into bags by the combination of the pushing cylinder and the unloading pushing head to avoid powder scattering and leakage. On the other hand, the powder particles in the silo are dynamically stirred, and the hot air of the hot fan is used to blow dry hot air into the dynamically stirred powder particles to avoid moisture and agglomeration of the powder particles due to humid air and other reasons, thereby ensuring its dry unloading performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of a rounded corner packaging machine for powder particles of the utility model;

[0024] Figure 2 This is a schematic structural diagram of a roll rack mechanism in a rounded corner packaging machine for powder particles according to the utility model;

[0025] Figure 3 This is a schematic structural diagram of a back-sealing mechanism in a rounded corner packaging machine for powder particles according to the utility model;

[0026] Figure 4 This is a schematic structural diagram of a traction mechanism in a rounded corner packaging machine for powder particles according to the utility model;

[0027] Figure 5 This is a structural schematic diagram of a sealing and cutting mechanism in a rounded corner packaging machine for powder particles of the utility model;

[0028] Figure 6 The utility model is a schematic structural diagram of a silo mechanism in a rounded corner packaging machine for powder particles.

[0029] In the figure: 1, packaging rack; 2, rounded material tube; 3, unloading tray; 4, winding rack mechanism; 41, winding rack; 42, winding shaft; 43, first motor; 44, first transmission belt; 45, first traction rod; 46, second traction rod; 47, third traction rod; 48, tensioning cylinder; 49, tensioning roller; 5, back sealing mechanism; 51, front support frame; 52, matching cylinder; 53, guide rail; 54, guide slide; 55, heat sealing back strip; 6, traction mechanism; 61, transmission shaft; 62, matching gear; 63, second transmission belt; 64, second motor; 65, Traction wheel; 7, cutting table; 8, sealing and cutting mechanism; 81, support seat; 82, clamping cylinder; 83, guide sleeve; 84, arm guide rod; 85, support table; 86, compression spring; 87, fixed table; 88, heat sealing strip; 89, fixed support rod; 810, cutting knife; 9, silo mechanism; 91, silo; 92, loading flap; 93, hot air fan; 94, stirring paddle; 95, spiral loading paddle; 96, discharge pipe; 97, synchronous belt; 98, synchronous motor; 99, discharge duct; 910, pushing cylinder; 911, discharge push head. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figure 1-6 As shown, a rounded corner packaging machine for powder particles includes a packaging frame 1 and a rounded corner material tube 2 installed at the front end of the packaging frame 1. The upper end of the packaging frame 1 is provided with a silo mechanism 9 that is connected to the rounded corner material tube 2. The silo mechanism 9 includes a silo 91 and a loading flap 92 installed at the port of the silo 91. The cover plate of the loading flap 92 is symmetrically penetrated and installed with a hot fan 93. The middle part of the silo body of the silo 91 is rotatably connected with a stirring paddle 94, and the conical bottom end of the silo 91 is rotatably connected with a spiral loading paddle 95. The conical bottom of the silo 91 is provided with a discharge pipe opening 96 along one end of the blade of the spiral loading paddle 95. The stirring paddle 94 and the spiral loading paddle 95 are connected by a synchronous belt 97, and the shaft of the stirring paddle 94 is connected to the material storage device 91. A synchronous motor 98 fixed on the silo 91 is installed at one end. By controlling the operation of the synchronous motor 98, the combination of the spiral feeding paddle 95 and the stirring paddle 94 is driven to rotate synchronously under the transfer transmission of the synchronous belt 97. On the one hand, the spiral pushing of the spiral feeding paddle 95 is used to quantitatively discharge the powder particles in the silo 91 into the discharge duct 99 through the discharge pipe mouth 96 in a spiral quantitative unloading manner. On the other hand, the stirring drive of the stirring paddle 94 is used to promote dynamic stirring of the powder particles in the silo 91. Then, under the hot air drying of the hot fan 93, the hot air is transmitted to all directions in the silo 91, and the powder particles inside are subjected to real-time dynamic drying treatment to avoid moisture absorption and agglomeration due to humid air and the like.

[0034] A discharge conduit 99 connected to the rounded material pipe 2 is installed at the bottom of the silo 91 along the discharge direction of the discharge pipe opening 96. A pushing cylinder 910 is arranged inside the pipe of the discharge conduit 99, and a discharge pushing head 911 is arranged at the telescopic end of the pushing cylinder 910. The discharge conduit 99 is used to buffer the powder particles, and then the pushing cylinder 910 pushes the discharge pushing head 911 to push the powder particles in the discharge conduit 99 through the rounded material pipe 2 to the packaging bag for bagging at one time, so as to avoid the powder particles from falling directly and causing powder leakage and powder scattering.

[0035] The upper end of the support of the packaging frame 1 is provided with a reel mechanism 4 opposite to the rounded material tube 2, and the reel mechanism 4 includes a reeling frame 41, the upper end of the support of the reeling frame 41 is rotatably connected with a reeling shaft 42, and the upper end of the support of the reeling frame 41 is provided with a first motor 43 opposite to the reeling shaft 42, and the first motor 43 is connected to the reeling shaft 42 through a first transmission belt 44. The two sides of the support of the reeling frame 41 are symmetrically provided with tensioning cylinders 48, and the telescopic end of the tensioning cylinder 48 is provided with a tensioning roller 49, and the packaging bag roll to be packaged is installed on the reeling frame The packaging bag reel on the unwinding shaft 42 is then driven to be unwound based on the transmission combination of the first motor 43 and the first transmission belt 44, and the packaging bag reel is unwound, and the packaging bag is unwound, and is tensioned and pulled out from the first traction rod 45, the second traction rod 46, the third traction rod 47, and the tensioning roller 49 in sequence, and is wrapped around the rounded material tube 2 to form a packaging bag in a rounded state. Subsequently, the tensioning cylinder 48 can be controlled to drive the horizontal sliding of the tensioning roller 49 to adjust the tension of the unwinding packaging bag, so that it can maintain a suitable tension state for sealing and packaging.

[0036] A back-sealing mechanism 5 that is opposite to the back plate of the rounded-corner material tube 2 is arranged at the front end of the support of the packaging frame 1. The back-sealing mechanism 5 includes horizontally opposite front support frames 51, a guide rod 53 is arranged between the two groups of front support frames 51, and the outer sides of the guide rods of the guide rods 53 are symmetrically slidably connected with guide slides 54, and heat-sealing back strips 55 are symmetrically arranged between the two groups of guide slides 54. A matching cylinder 52 that supports the guide slide 54 is arranged in the middle part of the support of the front support frame 51. When the packaging bag is wrapped along the rounded-corner material tube 2, based on the telescopic brake of the matching cylinder 52, the guide slide 54 is pushed to slide along the guide rod 53 to make the heat-sealing back strip 55 align, and the packaging bag wrapped on the rounded-corner material tube 2 is hot-pressed and back-sealed, so that the packaging bag is formed into a cylindrical packaging bag.

[0037] A traction mechanism 6 opposite to the sealing strip of the back sealing mechanism 5 is provided in the middle of the bracket of the packaging rack 1. The traction mechanism 6 includes two sets of transmission shafts 61 symmetrically arranged along the direction of the discharge port of the rounded material tube 2. The front ends of the shafts of the two sets of transmission shafts 61 are provided with traction wheels 65, and the rear ends of the shafts of the two sets of transmission shafts 61 are provided with mutually meshing matching gears 62. A second motor 64 fixed to the back plate of the packaging rack 1 is installed on one side of the shaft of the transmission shaft 61, and the second motor 64 and the transmission shaft 61 are connected by a second transmission belt 63. Based on the transmission combination of the second motor 64 and the second transmission belt 63, one set of the transmission shafts 61 is driven to rotate, and then under the symmetrical meshing transmission of the matching gears 62, the two sets of transmission shafts 61 are driven to rotate symmetrically, and the traction wheels 65 are pushed to rotate in opposite directions. On the one hand, the packaging bag after back sealing is pulled to make it slide steadily downward along the rounded material tube 2, and on the other hand, the packaging table after back sealing is auxiliary pressed to keep its back seal in a tightly sealed state.

[0038] The lower end of the support of the packaging rack 1 is provided with a cutting table 7 which is vertically opposite to the rounded material tube 2, and the upper end of the support of the cutting table 7 is provided with two sets of sealing and cutting mechanisms 8 in a horizontally opposite form. The bottom end of the support of the packaging rack 1 is provided with a discharge tray 3 in the direction of the discharge port of the cutting table 7. The sealing and cutting mechanism 8 includes a support seat 81, and a clamping cylinder 82 is provided in the middle of the support seat 81, and the telescopic end of the clamping cylinder 82 is fixedly connected to the top support table 85. The two sides of the support seat 81 are symmetrically provided with guide sleeves 83, and the inner sleeve of the guide sleeve 83 slides It is connected to an arm force guide rod 84, which passes through the top support platform 85 and is fixedly connected to the fixed platform 87, and the top end of the arm of the arm force guide rod 84 is sleeved with a compression spring 86 that elastically presses against the top support platform 85. The front end of the fixed platform 87 is provided with a heat sealing strip 88, which is controlled by the extension of the telescopic end of the clamping cylinder 82 to push the top support platform 85 forward, and then push the two opposite sets of heat sealing strips 88 to fit together, so as to perform hot pressure sealing on the loaded packaging bag. While sealing, the packaging bag is limited and fixed to keep it in a vertical loading state.

[0039] Fixed support rods 89 are provided at both ends of the support platform 85, and the top of the arm of the fixed support rod 89 is provided with a cutting knife 810 inside the built-in heat sealing strip 88. The middle sealing part of the heat sealing strip 88 is provided with a storage groove for the built-in cutting knife 810. After the loaded packaging bag is sealed, under the continuous extension and contraction braking of the clamping cylinder 82, the heat sealing strip 88 is reversely displaced under the elastic force combination of the compression spring 86 and the arm guide rod 84, exposing the cutting knife 810 inside, and performing synchronous cutting work on the sealed packaging bag. The sealing and cutting stability is better, and the integrated linkage performance is higher.

[0040] The working principle of the utility model is as follows: when the rounded corner packaging machine is used for packaging, the packaging bag roll to be packaged is first installed on the unwinding shaft 42 in the roll frame mechanism 4, and then based on the transmission combination of the first motor 43 and the first transmission belt 44, the packaging bag roll on the unwinding shaft 42 is driven to be unwound, and the packaging bag roll is unwound, and is tensioned and pulled out from the first traction rod 45, the second traction rod 46, the third traction rod 47, and the tensioning roller 49 in sequence, and is wrapped on the rounded corner material tube 2, so that it forms a packaging bag in a rounded corner state;

[0041] Then, when the packaging bag slides along the rounded material tube 2, based on the telescopic brake of the matching cylinder 52 in the back sealing mechanism 5, the guide slide 54 is pushed to slide along the guide rail rod 53, so that the heat-sealing back strip 55 is matched, and the packaging bag wrapped on the rounded material tube 2 is heat-pressed and back-sealed, so that the packaging bag is formed into a cylindrical packaging bag;

[0042] After the back of the packaging bag is sealed, based on the transmission combination of the second motor 64 and the second transmission belt 63 in the traction mechanism 6, the two sets of transmission shafts 61 are driven to rotate symmetrically under the symmetrical meshing transmission of the mating gears 62, and the traction wheel 65 is driven to rotate in the opposite direction, so as to traction the back-sealed packaging bag, so that it can slide steadily downward along the rounded material tube 2;

[0043] While the packaging bag is moving downward, the synchronous motor 98 in the silo mechanism 9 is controlled to work, and under the transfer transmission of the synchronous belt 97, the combination of the spiral feeding paddle 95 and the stirring paddle 94 is driven to rotate synchronously, and the stirring drive of the stirring paddle 94 is used to promote the dynamic stirring of the powder particles in the silo 91, and then the hot air drying of the hot fan 93 is used to transmit the hot air to all directions in the silo 91, and the powder particles inside are subjected to real-time dynamic drying treatment, and the spiral pushing of the spiral feeding paddle 95 is synchronously used to quantitatively discharge the powder particles in the silo 91 through the discharge pipe mouth 96 to the discharge conduit 99 in a spiral quantitative unloading manner, and then the discharge push head 911 is pushed by the push cylinder 910, and the powder particles in the discharge conduit 99 are pushed and discharged into the packaging bag through the rounded material pipe 2 at one time for bagging, so as to avoid the direct falling of the powder particles, leakage of powder, and powder scattering;

[0044] After the powder is further bagged, based on the telescopic braking of the clamping cylinder 82 in the sealing and cutting mechanism 8, the support platform 85 is pushed forward, and then the two sets of relative heat-sealing strips 88 are pushed to align, and the loaded packaging bags are hot-pressed and sealed. While sealing, the packaging bags are limited and fixed to keep them in a vertical loading state. Then, under the continuous telescopic braking of the clamping cylinder 82, the heat-sealing strip 88 is displaced in the opposite direction under the elastic force combination of the compression spring 86 and the arm guide rod 84, exposing the cutting knife 810 inside, and performing synchronous cutting on the sealed packaging bags. The cut packaging bags fall onto the unloading tray 3, and then in this way, continuous and uninterrupted stable bag packaging work is performed.

[0045] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A rounded corner packaging machine for powder particles, characterized in that: It comprises a packaging rack (1) and a rounded material tube (2) installed at the front end of the packaging rack (1); The upper end of the support of the packaging rack (1) is provided with a material bin mechanism (9) which is in communication with the rounded material tube (2); The upper end of the support of the packaging rack (1) is provided with a roll rack mechanism (4) opposite to the rounded material tube (2); The front end of the support of the packaging rack (1) is provided with a back sealing mechanism (5) facing the back plate of the rounded material tube (2); A traction mechanism (6) is provided in the middle of the support of the packaging rack (1) and is opposite to the sealing strip of the back sealing mechanism (5); The lower end of the support of the packaging rack (1) is provided with a cutting table (7) vertically opposite to the rounded material tube (2), and the upper end of the frame of the cutting table (7) is provided with two sets of sealing and cutting mechanisms (8) in a horizontally opposite manner; The sealing and cutting mechanism (8) comprises a support seat (81), a clamping cylinder (82) is arranged in the middle of the support seat (81), and the telescopic end of the clamping cylinder (82) is fixedly connected to the top support platform (85), guide sleeves (83) are symmetrically arranged on both sides of the support seat (81), and the shaft sleeve of the guide sleeve (83) is slidably connected to the arm force guide rod (84), the arm force guide rod (84) passes through the top support platform (85) and is fixedly connected to the fixed platform (87), and the top end of the arm of the arm guide rod (84) is sleeved with a compression spring (86) elastically pressing against the top support platform (85), the front end of the fixed platform (87) is provided with a heat sealing strip (88), and both ends of the frame of the top support platform (85) are provided with fixed support rods (89), and the top end of the arm of the fixed support rod (89) is provided with a cutting knife (810) built into the heat sealing strip (88).

2. A rounded corner packaging machine for powder particles according to claim 1, characterized in that: The heat sealing strip (88) has a storage groove in the middle of the sealing portion for housing a cutting knife (810).

3. A rounded corner packaging machine for powder particles according to claim 1, characterized in that: The reel mechanism (4) comprises a reel (41), the upper end of a bracket of the reel (41) being rotatably connected to a reel shaft (42), and the upper end of the bracket of the reel (41) being provided with a first motor (43) opposite to the reel shaft (42), the first motor (43) being connected to the reel shaft (42) by a first transmission belt (44), and tensioning cylinders (48) being symmetrically provided on both sides of the bracket of the reel (41), and a tensioning roller (49) being provided at the telescopic end of the tensioning cylinder (48).

4. A rounded corner packaging machine for powder particles according to claim 1, characterized in that: The back sealing mechanism (5) comprises horizontally opposed front support frames (51), a guide rail rod (53) is arranged between two groups of the front support frames (51), and the outer sides of the guide rods of the guide rail rods (53) are symmetrically slidably connected with guide slides (54), a heat-sealing back strip (55) is symmetrically arranged between the two groups of the guide slides (54), and a matching cylinder (52) for supporting the guide slides (54) is arranged in the middle of the bracket of the front support frame (51).

5. A rounded corner packaging machine for powder particles according to claim 1, characterized in that: The traction mechanism (6) comprises two groups of transmission shafts (61) symmetrically arranged along the direction of the discharge port of the rounded material tube (2), the front ends of the shafts of the two groups of transmission shafts (61) are provided with traction wheels (65), and the rear ends of the shafts of the two groups of transmission shafts (61) are provided with mutually meshing mating gears (62), one side of the shaft of the transmission shaft (61) is equipped with a second motor (64) fixed to the back plate of the packaging rack (1), and the second motor (64) and the transmission shaft (61) are connected to each other through a second transmission belt (63).

6. A rounded corner packaging machine for powder particles according to claim 1, characterized in that: A discharge tray (3) is installed at the bottom end of the support of the packaging rack (1) facing the discharge port of the cutting table (7).

7. A rounded corner packaging machine for powder particles according to claim 1, characterized in that: The silo mechanism (9) comprises a silo (91) and a loading flap (92) installed at a port of the silo (91); a cover plate of the loading flap (92) is symmetrically provided with a hot fan (93) therethrough; a stirring paddle (94) is rotatably connected to the middle of the silo body of the silo (91); and a spiral loading paddle (95) is rotatably connected to the conical bottom end of the silo (91); a discharge pipe opening (96) is provided along one end of the blade of the spiral loading paddle (95) at the conical bottom of the silo (91); and a discharge conduit (99) connected to a rounded material pipe (2) is installed at the bottom of the silo (91) along the discharge direction of the discharge pipe opening (96); a pushing cylinder (910) is provided inside the pipe of the discharge conduit (99); and a discharge pushing head (911) is provided at the telescopic end of the pushing cylinder (910).

8. A rounded corner packaging machine for powder particles according to claim 7, characterized in that: The stirring paddle (94) and the spiral feeding paddle (95) are connected to each other via a synchronous belt (97), and a synchronous motor (98) fixed to the silo (91) is mounted on one end of the shaft of the stirring paddle (94).

Images