Symmetrical powder four-side sealing packaging machine

Abstract

The present application relates to the technical field of packaging machine, and particularly relates to a symmetrical powder four-edge sealing packaging machine, which comprises a working box body, a film feeding mechanism is arranged on the upper side of the working box body, a supporting frame is arranged on the top surface of the working box body, two positioning plates are arranged on the top surface of the supporting frame, a pretreatment assembly is arranged above the two positioning plates, a metering assembly is arranged on the other side of the supporting frame, a discharging pipeline is arranged on the side of the supporting frame close to the metering assembly, a heat sealing mechanism is arranged on the top of one side of the working box body, a film pulling mechanism is arranged in the middle of one side of the working box body, and a cutting mechanism and a discharging hopper are sequentially arranged on the bottom of one side of the working box body. Compared with the prior art, the pretreatment assembly is arranged, so that the powder is always maintained in a loose state, the flowability is enhanced, and the problems of blockage, metering error and sealing bulging caused by powder caking of the traditional equipment are solved.

Description

Technical Field

[0001] This invention relates to the field of packaging machine technology, and in particular to a symmetrical powder four-side sealing packaging machine. Background Technology

[0002] The symmetrical powder four-side sealing packaging machine belongs to the field of powder material packaging technology. It is mainly used for the automated packaging of powder products (such as milk powder, traditional Chinese medicine powder, seasonings, etc.) in the food, pharmaceutical and chemical industries.

[0003] In the prior art, Chinese patent document CN217436180U discloses a four-side sealing packaging machine that can process products of different sizes, offering multiple uses in one machine, saving processing costs and improving efficiency. However, consistent with traditional methods, the physical properties of powdered materials (such as easy moisture absorption, static electricity, and uneven particle size) make them prone to clumping and agglomeration during storage and transportation. To address this issue, traditional packaging machines are mostly crudely designed: their feeding systems often use a single feed inlet that remains open, or are only equipped with a simple gate for on / off control. This design causes the powder to rush into the pretreatment area instantly and in large quantities under gravity, rather than being supplied in a controllable and uniform manner. When a large amount of powder accumulates in a narrow space below the feed inlet within a short period of time, the internal friction and extrusion forces quickly form a stable "bridging" (i.e., a material arch) or a central void (i.e., a "rat hole"). The "bridging" phenomenon causes the powder to suspend in mid-air, preventing subsequent material from falling normally and completely interrupting the feed flow. The "rat hole" phenomenon causes only the powder in the center to flow, while the surrounding material stagnates, resulting in poor feeding and uneven composition of the output. Both of these situations can directly cause the machine to run out of material or the filling volume to decrease sharply, forcing the production line to stop. This requires frequent manual intervention from the operator, such as knocking on the hopper to break the material arch. This not only significantly reduces packaging efficiency but also disrupts the continuity of production automation. Therefore, this application discloses a symmetrical powder four-side sealing packaging machine. Summary of the Invention

[0004] In view of this, the purpose of this invention is to propose a symmetrical powder four-side sealing packaging machine to solve the problem that the traditional packaging machine's crude single-point feeding fails to address the inherent flowability problem of powder. Instead, the instantaneous accumulation of large quantities exacerbates the "bridging" and "mouse hole" phenomena, causing the automated production process to fall into a vicious cycle of dependence on manual intervention.

[0005] To achieve the above objectives, the present invention provides a symmetrical powder four-side sealing packaging machine, comprising: a working box; a film feeding mechanism is provided on the upper side of one side of the working box for conveying packaging film; a support frame is provided on the top surface of the working box; two positioning plates are provided on one side of the top surface of the support frame; a pre-treatment component is provided above the two positioning plates; a dispensing component is provided on the other side of the support frame; a feeding pipe is provided on the side of the support frame near the dispensing component, the feeding pipe being located below the dispensing component; a heat sealing mechanism is provided on the top of one side of the working box for symmetrically sealing the powder packaged on the feeding pipe; a film pulling mechanism is provided in the middle of one side of the working box for pulling the packaging film on the film feeding mechanism; and a cutting mechanism and a feeding hopper are sequentially provided on the bottom of one side of the working box for cutting the packaged and sealed product.

[0006] The pretreatment component is used to pretreat the powder before it is fed into the feed.

[0007] The component is used to dispense and quantify the processed powder.

[0008] Preferably, the pretreatment component includes a feeding box fixedly installed above the two positioning plates. The top of the feeding box is provided with two feeding hoppers, and the bottom of the feeding box is provided with an inclined discharge hopper. The bottom of the discharge hopper is located directly above one side of the component. A partition is provided in the middle of the bottom of the feeding box, and filter plates are provided on both sides of the bottom of the feeding box.

[0009] Preferably, a positioning box is provided on the inner top surface of the feed box. A sliding rod is slidably installed on one side of the positioning box. Both sides of the top of the sliding rod are provided with sealing blocks adapted to the two feed hoppers. A reciprocating ring is provided in the middle of the sliding rod. The upper and lower inner sides of the reciprocating ring are provided with teeth. A servo motor is provided on the other side of the positioning box. A half gear is provided at the output end of the servo motor. The half gear meshes with the teeth. When the servo motor drives the half gear to rotate, the half gear meshes with the teeth on the upper and lower sides of the reciprocating ring in sequence, thereby driving the sliding rod to slide horizontally back and forth, causing the sealing blocks to alternately seal and open the two feed hoppers.

[0010] Preferably, guide plates are rotatably mounted on both sides of the feed box, and a torsion spring is provided at the connection between the guide plate and the working box. The guide plate is initially inclined downwards.

[0011] Preferably, two vertical plates are fixedly installed in the middle of the feed box, and sliding frames are slidably installed on both vertical plates. Two connecting frames are provided on one side of each of the two sliding frames, and a connecting plate is installed on both connecting frames. A sliding cylinder is vertically slidably installed in the middle of the partition block. A rotating rod is rotatably installed in the middle of the bottom of the positioning box. A rack plate is provided at the bottom of the reciprocating ring. A rotating gear that meshes with the rack plate is provided on the top surface of the rotating rod. A threaded section is provided at the bottom of the rotating rod. An internal thread groove that matches the threaded section is provided inside the sliding cylinder. When the reciprocating ring moves horizontally back and forth, the rack plate drives the rotating gear and the rotating rod to rotate back and forth, thereby driving the sliding cylinder to move vertically up and down.

[0012] Preferably, a connecting rod is rotatably mounted on both sides of the sliding cylinder, and the other side of the connecting rod is rotatably connected to the bottom of the two sliding frames respectively. A lifting plate is provided on the top of the connecting plate, and the lifting plate is located below the guide plate. When the sliding cylinder moves up and down, the connecting rod drives the sliding frame to slide back and forth on the vertical plate, and the lifting plate moves horizontally back and forth synchronously, driving the lifting plate to push the guide plate to flip upward and seal.

[0013] Preferably, the bottom of the connecting plate is provided with a mounting frame, and a crushing roller is rotatably mounted on the mounting frame. The crushing roller abuts against the top surface of the filter plate. When the sliding cylinder moves up and down, the connecting plate slides horizontally back and forth synchronously to crush the raw materials remaining on the filter plate and to drive the filter plate to vibrate and discharge the material.

[0014] Preferably, the component assembly includes a fixed plate fixedly installed above the support frame, a rotating plate rotatably installed above the fixed plate, a rotating motor fixedly installed at the bottom of the fixed plate, the output end of the rotating motor passing through the fixed plate and fixedly connected to the middle of the rotating plate, a plurality of through-type metering cylinders being provided on the bottom surface of the rotating plate, and a discharge port opposite to the discharge pipe being opened on one side of the fixed plate. When one of the through-type metering cylinders rotates to the discharge port, the raw material enters the discharge pipe.

[0015] Preferably, an extension rod is provided on one side of the film feeding mechanism, and a material distribution plate is fixedly installed on the other side of the extension rod. The material distribution plate abuts against the upper surface of the through-type metering cylinder. When the through-type metering cylinder rotates, the rotating plate drives the raw material into the interior of the through-type metering cylinder.

[0016] The beneficial effects of this invention are:

[0017] This symmetrical powder four-side sealing packaging machine uses a servo motor to drive a half-gear that meshes with a reciprocating ring gear, causing a sliding rod to move horizontally back and forth. This causes the sealing blocks of the two feed hoppers to open and close alternately, enabling the powder to be fed in stages and at intervals, preventing powder from accumulating on the frame at the source. At the same time, the rack plate at the bottom of the reciprocating ring drives the rotating gear and threaded rod, which is converted into the vertical movement of the sliding cylinder. Through the connecting rod, the crushing roller moves horizontally back and forth on the filter plate and induces micro-vibration, effectively breaking up agglomerated particles and screening impurities. The lifting plate periodically lifts the guide plate to form intermittent sealing, avoiding excessive feeding. This integrated design of "alternating feeding-crushing-vibrating screen-guiding" keeps the powder in a loose state, enhances its fluidity, and solves the problems of material blockage, metering error, and sealing bulging caused by powder agglomeration in traditional equipment.

[0018] In the component assembly, a rotating motor drives a rotating plate to rotate multiple through-type metering cylinders in a circular motion. A distribution plate scrapes off excess material from the cylinder opening, ensuring that each metering cylinder has a consistent filling volume. When the metering cylinder rotates to the discharge port, the material falls precisely into the discharge pipe by gravity, forming a closed loop of "loading-scraping-alignment-discharging". The multi-cylinder layout constitutes a dynamic buffer system, which can maintain a stable downstream discharge rhythm even if there are fluctuations in upstream feed.

[0019] The reciprocating motion of the pretreatment component is indirectly linked to the rotation and quantitative distribution of the component through mechanisms such as rack and pinion plates and rotating rods. This allows the powder to form a coordinated rhythm during feeding, loosening, quantitative distribution, and filling: staggered feeding reduces instantaneous load, the crushing and vibrating screen ensures uniform powder entry into the cylinder, and the indexing rotation achieves seamless quantitative feeding. Combined with the constant tension traction guidance of the film pulling mechanism, the powder is tightly filled into the formed film bag without air bubbles. Subsequently, the heat sealing mechanism seals the four sides simultaneously, using symmetrical sealing to enhance the sealing strength and avoid edge curling or air leakage caused by traditional single-sided heat sealing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the second-view three-dimensional structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the component component structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the planar structure of the component component of the present invention;

[0026] Figure 6 This is a schematic diagram of the internal structure of the preprocessing component of the present invention;

[0027] Figure 7 This is a schematic diagram of the internal planar structure of the preprocessing component of the present invention;

[0028] Figure 8 This is a partial structural diagram of the preprocessing component of the present invention;

[0029] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B.

[0030] The diagram is marked as follows:

[0031] 1. Working box; 2. Positioning plate; 3. Feeding box; 4. Weighting component; 5. Film feeding mechanism; 6. Discharge pipe; 7. Heat sealing mechanism; 8. Cutting mechanism; 9. Drop hopper; 10. Film pulling mechanism; 11. Feeding hopper; 12. Positioning box; 13. Sliding rod; 14. Sealing block; 15. Reciprocating ring; 16. Servo motor; 17. Half gear; 18. Gear; 19. Guide plate; 20. Vertical plate; 21. Spacer; 22. Through Filter plate; 23. Sliding frame; 24. Connecting frame; 25. Connecting plate; 26. Lifting plate; 27. Mounting frame; 28. Compactor roller; 29. ​​Sliding cylinder; 30. Rack plate; 31. Rotating rod; 32. Rotating gear; 33. Threaded section; 34. Connecting rod; 35. Support frame; 36. Fixing plate; 37. Rotating plate; 38. Through-type metering cylinder; 39. Rotating motor; 40. Extension rod; 41. Distributing plate; 42. Feed hopper. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0033] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0034] like Figures 1 to 9 As shown, a symmetrical powder four-side sealing packaging machine includes a working box 1. A film feeding mechanism 5 is located on the upper side of one side of the working box 1, used for conveying the packaging film. A support frame 35 is located on the top surface of the working box 1. Two positioning plates 2 are located on one side of the top surface of the support frame 35. A pre-treatment component is located above the two positioning plates 2. A dispensing component 4 is located on the other side of the support frame 35. A feeding pipe 6 is located on the side of the support frame 35 closest to the dispensing component 4, below the dispensing component 4. A heat-sealing mechanism 7 is provided on the top of one side of the working box 1. The heat-sealing mechanism 7 is used to symmetrically seal the powder packaged on the feeding pipe 6. A film-pulling mechanism 10 is provided in the middle of one side of the working box 1. The film-pulling mechanism 10 is used to pull the packaging film on the film feeding mechanism 5. A cutting mechanism 8 and a feeding hopper 9 are arranged in sequence on the bottom of one side of the working box 1. The cutting mechanism 8 is used to cut the packaged and sealed product. The pretreatment component is used to pretreat the powder before feeding. The dispensing component 4 is used to dispense and quantify the processed powder.

[0035] The film feeding mechanism 5 continuously and stably conveys the packaging film to the forming and sealing area of ​​the working box 1. The two positioning plates 2 on the top of the support frame 35 clamp and limit the direction of the packaging film, keeping the film flat before entering the pretreatment area to ensure subsequent sealing accuracy. The pretreatment component loosens, de-agglomerates, or removes impurities from the powder before it is fed, making the powder particles more uniform and avoiding poor feeding, quantitative errors, or bulging of the package due to powder agglomeration, thus improving the flowability of the material. The pretreated powder is fed into the dispensing component 4 on the other side of the support frame 35. The dispensing component 4 accurately dispenses the powder, improving packaging consistency and product quality stability. The dispensed powder enters the feeding pipe 6 from below the dispensing component 4. The packaging film moves downward synchronously under the traction of the film-pulling mechanism 10. The film-pulling mechanism 10 ensures that the packaging film is under stable force and appropriate tension, so that the film can be tightly attached to the outside of the feeding pipe 6 after it is formed and maintain synchronous vertical movement. This allows the powder to form a continuous and stable filling process in the feeding pipe 6, without problems such as leakage, uneven material or film wrinkling. After the powder is completely filled into the film bag, the heat-sealing mechanism 7 located on the top side of the working box 1 immediately heat-seals the four sides synchronously, so that the finished bag achieves symmetrical sealing. This four-side sealing structure not only has a neat appearance and high sealing performance, but also improves storage stability and moisture-proof performance. Subsequently, the sealed powder bag continues to move downward to the position of the cutting mechanism 8, where it is precisely cut.

[0036] like Figures 1 to 2 , Figures 6 to 9 As shown, the pretreatment component includes a feeding box 3 fixedly installed above two positioning plates 2. The top of the feeding box 3 has two feeding hoppers 11, and the bottom of the feeding box 3 has an inclined discharge hopper 42. The bottom of the discharge hopper 42 is located directly above one side of the component 4. A partition block 21 is located in the middle of the bottom of the feeding box 3. Filter plates 22 are respectively installed on both sides of the bottom of the feeding box 3. A positioning box 12 is installed on the top surface inside the feeding box 3. A sliding rod 13 is slidably installed on one side inside the positioning box 12. The top of both sides of the sliding rod 13 is equipped with connections to the two feeding hoppers. The 11-phase matching sealing block 14 has a reciprocating ring 15 in the middle of the sliding rod 13. The reciprocating ring 15 has teeth 18 on both the upper and lower inner sides. The other side of the positioning box 12 has a servo motor 16. The output end of the servo motor 16 has a half gear 17. The half gear 17 meshes with the teeth 18. When the servo motor 16 drives the half gear 17 to rotate, the half gear 17 meshes with the teeth 18 on the upper and lower sides of the reciprocating ring 15 in sequence, thereby driving the sliding rod 13 to slide horizontally back and forth, and causing the sealing block 14 to alternately seal and open the two feed hoppers 11.

[0037] When the pretreatment component is running, the servo motor 16 drives the half gear 17 at the output end to start rotating. Since the half gear 17 only has teeth on half a circumference, it will sequentially mesh with the upper and lower rows of teeth 18 on the inner side of the reciprocating ring 15 during rotation, thus forming a periodic meshing pattern of "upper side meshing → disengagement → lower side meshing → disengagement again". This causes the reciprocating ring 15 to be driven by a driving force during the meshing phase and move back and forth in the horizontal direction, driving the sliding rod 13 connected in the middle to make a stable reciprocating sliding motion. This causes the sealing blocks 14 on both sides of the top of the sliding rod 13 to perform an alternating opening and closing action on the two feed hoppers 11. When the sliding rod 13 moves to one side, the sealing block 14 on that side fits against the hopper opening to complete the seal, while the sealing block 14 on the other side leaves the hopper opening. Its open design allows for staggered feeding, where the two feed hoppers 11 cannot open simultaneously. This structure offers the advantage of precisely controlling the rhythm, timing, and drop position of the powder entering the feed box 3. This prevents the powder from falling in large quantities at once, but rather entering the pretreatment area in a staggered, phased, and intermittent manner. This avoids the powder accumulating, bridging, or clumping at the discharge port, maintaining a loose powder state and creating favorable conditions for the subsequent dispersion effect of the filter plate 22 and the partition block 21. After the powder alternately fed into the feed box 3 by the two feed hoppers 11, the filter plate 22 initially blocks and screens large clumps, foreign objects, or overly coarse particles in the powder, making the powder that finally enters the discharge hopper 42 more uniform, cleaner, and more fluid.

[0038] Two vertical plates 20 are fixedly installed in the middle of the feed box 3. Sliding brackets 23 are slidably installed on each of the two vertical plates 20. Two connecting brackets 24 are provided on one side of each of the two sliding brackets 23. A connecting plate 25 is commonly installed on each of the two connecting brackets 24. A sliding cylinder 29 is vertically slidably installed in the middle of the partition block 21. A rotating rod 31 is rotatably installed in the middle of the bottom of the positioning box 12. A rack plate 30 is provided at the bottom of the reciprocating ring 15. A rotating gear 32 that meshes with the rack plate 30 is provided on the top surface of the rotating rod 31. A threaded section 33 is provided at the bottom of the rotating rod 31. An internal thread groove that matches the threaded section 33 is provided inside the sliding cylinder 29. When the reciprocating ring 15 moves horizontally back and forth, the rack plate 30 drives the rotating gear 32 and the rotating rod 31 to rotate back and forth, thereby driving the sliding cylinder 29 to move vertically up and down. Both sides of the sliding cylinder 29 are rotatably mounted with connecting rods 34, and the other side of the connecting rods 34 is rotatably connected to the bottom of the two sliding frames 23 respectively. The bottom of the connecting plate 25 is provided with a mounting frame 27, and a crushing roller 28 is rotatably mounted on the mounting frame 27. The crushing roller 28 abuts against the top surface of the filter plate 22. When the sliding cylinder 29 moves up and down, the connecting plate 25 slides horizontally back and forth synchronously to crush the raw materials remaining on the filter plate 22 and drive the filter plate 22 to vibrate and discharge the material.

[0039] When the equipment is running, the reciprocating ring 15 moves horizontally reciprocally under the drive of the servo motor 16. The rack plate 30 at its bottom moves synchronously left and right, driving the rotating gear 32 meshing with it to reciprocate. This rotating gear 32 is integrated with the rotating rod 31 below it, causing the rotating rod 31 to perform stable alternating forward and reverse rotation under the drive of the rack plate 30. Since the bottom of the rotating rod 31 has a threaded section 33 that engages with the internal thread groove inside the sliding cylinder 29, this rotational motion is automatically converted into the vertical lifting and lowering of the sliding cylinder 29. This allows the sliding cylinder 29 to achieve controllable up-and-down reciprocating motion without the need for an additional lifting motor. As the sliding cylinder 29 moves up or down, the connecting rods 34 rotatably mounted on both sides swing synchronously, transmitting this swinging motion to the sliding frames 23 on the two vertical plates 20. This causes the two sliding frames 23 to slide horizontally reciprocally along the direction of the vertical plates 20. The movement of the sliding frames 23 directly drives the two connecting frames 24 and the entire connecting plate 25 to perform synchronous operations. The reciprocating horizontal movement of the distance causes the mounting frame 27 at the bottom of the connecting plate 25 to drive the crushing roller 28 to move back and forth on the top surface of the filter plate 22. The presence of the crushing roller 28 can not only lightly crush the powder raw material remaining on the surface of the filter plate 22, crushing larger particles and breaking up loose agglomerates, thus improving the uniformity of the powder, but also generate periodic micro-vibrations on the filter plate 22 during the crushing process, causing the filter plate 22 to vibrate regularly, promoting the smooth falling of fine powder and avoiding accumulation, thus improving the material flow in the pretreatment area. The entire mechanism drives the rotating rod 31 to rotate through the rack plate 30, and the rotating rod 31 drives the sliding cylinder 29 to rise and fall through the thread. The sliding cylinder 29 then drives the sliding frame 23 and the crushing roller 28 to perform a compound action, realizing the three-in-one effect of powder breaking, vibrating screen feeding, and particle homogenization. This ensures that the powder remains in a loose, uniform, and flowable state before entering the component 4, effectively avoiding problems such as metering deviation, powder blockage, and poor material flow, and improving packaging stability and overall machine production efficiency.

[0040] Guide plates 19 are rotatably installed on both sides of the feed box 3. A torsion spring is provided at the connection between the guide plate 19 and the working box 1. The guide plate 19 is initially inclined downward. A lifting plate 26 is provided on the top of the connecting plate 25. The lifting plate 26 is located below the guide plate 19. When the sliding cylinder 29 moves up and down, the sliding frame 23 is driven to slide back and forth on the vertical plate 20 through the connecting rod 34. The lifting plate 26 moves back and forth horizontally at the same time, which drives the lifting plate 26 to push the guide plate 19 to flip upward and seal.

[0041] The sliding cylinder 29 is vertically raised and lowered under the action of the drive mechanism. The connecting rods 34 on both sides swing accordingly and drive the sliding frame 23 to make a stable horizontal reciprocating motion along the vertical plate 20. The reciprocating movement of the sliding frame 23 causes the top fixed lifting plate 26 to slide back and forth synchronously. During the movement of the lifting plate 26, it is always located below the guide plate 19 and pushes the lower edge of the guide plate 19 when it moves forward, causing the guide plate 19 to flip upward along the hinge point and be lifted from its original downward tilted state. When the lifting plate 26 moves backward, the restoring force of the torsion spring causes the guide plate 19 to automatically fall back to the initial tilted and open posture. When the system is in the crushing and vibrating screen or the feeding is temporarily slowed down, the lifting plate 26 will periodically push the guide plate 19 to flip up to form a range blockage, thus forming an intelligent guiding mechanism that automatically switches between "guidance and blockage". This not only improves the feeding accuracy and cycle consistency, but also improves the cleanliness of the site and prevents the blockage problem caused by excessive accumulation.

[0042] like Figures 1 to 5 As shown, the component 4 includes a fixed plate 36 fixedly installed above the support frame 35, a rotating plate 37 rotatably installed above the fixed plate 36, a rotating motor 39 fixedly installed at the bottom of the fixed plate 36, the output end of the rotating motor 39 passing through the fixed plate 36 and fixedly connected to the middle of the rotating plate 37, a plurality of through-type metering cylinders 38 are provided on the bottom surface of the rotating plate 37, and a feeding port opposite to the feeding pipe 6 is opened on one side of the fixed plate 36. When one of the through-type metering cylinders 38 rotates to the feeding port, the raw material enters the feeding pipe 6. An extension rod 40 is provided on one side of the film feeding mechanism 5, and a distribution plate 41 is fixedly installed on the other side of the extension rod 40. The distribution plate 41 abuts against the upper surface of the through-type metering cylinder 38. When the through-type metering cylinder 38 rotates, the rotating plate 37 drives the raw material into the interior of the through-type metering cylinder 38.

[0043] In this structure, the rotating motor 39 drives the rotating plate 37 to rotate continuously and stably, causing multiple through-type metering cylinders 38 arranged on its bottom surface to pass sequentially above the dispensing plate 41 and alternately align with the discharge port on the side of the fixed plate 36. During the rotation, the dispensing plate 41 always adheres to the upper surface of each metering cylinder, playing the roles of scraping, limiting height, and uniform filling, ensuring that each metering cylinder receives the same volume of material and avoiding metering errors caused by uneven material accumulation. When a full metering cylinder rotates to the discharge port position, its bottom end is precisely aligned with the discharge port, and the material falls smoothly into the discharge pipe 6 under the action of gravity, achieving stable discharge of a single cylinder, a single time, and a fixed amount. This "rotational indexing" cycle The loop design enables continuous material intake, continuous metering, and continuous discharge, ensuring stable material flow and preventing blockages, leaks, or duplicate metering. Simultaneously, the multiple metering cylinders can be arranged at various points, and the continuous rotation of the rotating plate 37 effectively creates a dynamic storage structure for material buffering and batch output. This maintains stable downstream discharge even when upstream material flow fluctuates, improving the machine's overall resilience. The scraping mechanism, where the distribution plate 41 closely contacts the metering cylinder, prevents material accumulation or bridging at the cylinder opening, improving filling uniformity. This ensures that each metering cylinder reaches the discharge port at full load, significantly enhancing metering accuracy. The entire structure completes the closed-loop action of "loading—leveling—aligning—discharging" with a single rotating motor 39, reducing the number of mechanisms, making the system stable, rhythmic, and easy to maintain. This ensures that material enters the discharge pipe 6 precisely and continuously, simultaneously cooperating with the film feeding mechanism 5 to complete subsequent bagging and filling.

[0044] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0045] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A symmetrical powder four-side sealing packaging machine, characterized in that, include: A working box (1) is provided with a film feeding mechanism (5) on one side above the working box (1). The film feeding mechanism (5) is used for conveying packaging film. A support frame (35) is provided on the top surface of the working box (1). Two positioning plates (2) are provided on one side of the top surface of the support frame (35). A pre-treatment component is provided above the two positioning plates (2). A component assembly (4) is provided on the other side of the support frame (35). A feeding pipe (6) is provided on the side of the support frame (35) near the component assembly (4). The feeding pipe (6) is located in the... On the lower side of the component (4), a heat sealing mechanism (7) is provided on the top of one side of the working box (1). The heat sealing mechanism (7) is used to symmetrically seal the powder packaged on the feeding pipe (6) on all four sides. A film pulling mechanism (10) is provided in the middle of one side of the working box (1). The film pulling mechanism (10) is used to pull the packaging film on the film feeding mechanism (5). A cutting mechanism (8) and a dropping hopper (9) are arranged in sequence on the bottom of one side of the working box (1). The cutting mechanism (8) is used to cut the packaged and sealed product. The pretreatment component is used to pretreat the powder before it is fed into the feed. The component (4) is used to dispense and quantify the processed powder; The pretreatment assembly includes a feed box (3) fixedly installed above the two positioning plates (2). The top of the feed box (3) has two feed hoppers (11). A partition (21) is located in the middle of the bottom of the feed box (3). A positioning box (12) is located on the top inner surface of the feed box (3). A sliding rod (13) is slidably installed on one side of the positioning box (12). Both sides of the top of the sliding rod (13) are equipped with sealing blocks (14) that are compatible with the two feed hoppers (11). A reciprocating ring (15) is located in the middle of the sliding rod (13). 5) has teeth (18) on both the upper and lower inner sides. A servo motor (16) is provided on the other side of the positioning box (12). A half gear (17) is provided at the output end of the servo motor (16). The half gear (17) meshes with the teeth (18). When the servo motor (16) drives the half gear (17) to rotate, the half gear (17) meshes with the teeth (18) on the upper and lower sides of the reciprocating ring (15) in sequence, thereby driving the sliding rod (13) to slide horizontally back and forth, and driving the sealing block (14) to alternately seal and open the two feed hoppers (11). Guide plates (19) are rotatably installed on both sides of the feed box (3); two vertical plates (20) are fixedly installed in the middle of the feed box (3), and sliding frames (23) are slidably installed on the two vertical plates (20). Two connecting frames (24) are provided on one side of the two sliding frames (23), and connecting plates (25) are installed on the two connecting frames (24). A sliding cylinder (29) is vertically slidably installed in the middle of the partition block (21). A rotating rod (31) is rotatably installed in the middle of the bottom of the positioning box (12). A rack plate (30) is provided at the bottom of the reciprocating ring (15). A rotating gear (32) that meshes with the rack plate (30) is provided on the top surface of the rotating rod (31).

2. The symmetrical powder four-side sealing packaging machine according to claim 1, characterized in that, The bottom of the feed box (3) is provided with an inclined feeding hopper (42), the bottom of the feeding hopper (42) is located directly above one side of the component (4), and filter plates (22) are provided on both sides of the bottom of the feed box (3).

3. The symmetrical powder four-side sealing packaging machine according to claim 1, characterized in that, A torsion spring is provided at the connection between the guide plate (19) and the working box (1), and the guide plate (19) is initially inclined downward.

4. The symmetrical powder four-side sealing packaging machine according to claim 1, characterized in that, The bottom of the rotating rod (31) is provided with a threaded section (33), and the interior of the sliding cylinder (29) is provided with an internal thread groove that matches the threaded section (33). When the reciprocating ring (15) moves horizontally back and forth, the rack plate (30) drives the rotating gear (32) and the rotating rod (31) to rotate back and forth, thereby driving the sliding cylinder (29) to move vertically up and down.

5. The symmetrical powder four-side sealing packaging machine according to claim 4, characterized in that, Both sides of the sliding cylinder (29) are rotatably mounted with connecting rods (34). The other side of the connecting rods (34) is rotatably connected to the bottom of the two sliding frames (23). The top of the connecting plate (25) is provided with a lifting plate (26). The lifting plate (26) is located below the guide plate (19). When the sliding cylinder (29) moves up and down, the connecting rods (34) drive the sliding frames (23) to slide back and forth on the vertical plate (20). The lifting plate (26) moves back and forth horizontally in sync, driving the lifting plate (26) to push the guide plate (19) to flip upward and seal.

6. The symmetrical powder four-side sealing packaging machine according to claim 2, characterized in that, The bottom of the connecting plate (25) is provided with a mounting frame (27), and a crushing roller (28) is rotatably mounted on the mounting frame (27). The crushing roller (28) abuts against the top surface of the filter plate (22). When the sliding cylinder (29) moves up and down, the connecting plate (25) slides horizontally back and forth synchronously to crush the raw materials remaining on the filter plate (22) and drive the filter plate (22) to vibrate and discharge the material.

7. The symmetrical powder four-side sealing packaging machine according to claim 1, characterized in that, The component assembly (4) includes a fixed plate (36) fixedly installed above the support frame (35), a rotating plate (37) rotatably installed above the fixed plate (36), a rotating motor (39) fixedly installed at the bottom of the fixed plate (36), the output end of the rotating motor (39) passes through the fixed plate (36) and is fixedly connected to the middle of the rotating plate (37), a plurality of through-type metering cylinders (38) are provided on the bottom surface of the rotating plate (37), and a discharge port opposite to the discharge pipe (6) is opened on one side of the fixed plate (36). When one of the through-type metering cylinders (38) rotates to the discharge port, the raw material enters the discharge pipe (6).

8. The symmetrical powder four-side sealing packaging machine according to claim 7, characterized in that, An extension rod (40) is provided on one side of the film feeding mechanism (5), and a material distribution plate (41) is fixedly installed on the other side of the extension rod (40). The material distribution plate (41) abuts against the upper surface of the through-type metering cylinder (38). When the through-type metering cylinder (38) rotates, the rotating plate (37) drives the raw material into the interior of the through-type metering cylinder (38).

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