Packaging machine for protecting glucosamine product by using inert gas

By using a combination technology of inert gas and heat sealing components in the glucose packaging machine, the problem of moisture and deterioration caused by inhalation of air during filling is solved, which significantly extends the shelf life of the product.

CN222859797UActive Publication Date: 2025-05-13JIYUAN BIOLOGICAL PROD (XUZHOU) CO LTD
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Patent Information

Application Number
CN202421891088.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2025-05-13
Estimated Expiration
2034-08-06

AI Technical Summary

Technical Problem

Existing solid glucose packaging bags will inhale air during filling, causing oxygen and moisture to enter, causing glucose to become damp and deteriorate, significantly shortening the product's shelf life.

Method used

A packaging machine that uses inert gas protection is designed. The inflatable nozzle is driven into the packaging bag through an electric telescopic rod. The air pump conveys the inert gas to extrude the air in the packaging bag and seals the air through the heat seal assembly to prevent air from entering again.

Benefits of technology

It effectively prevents solid glucose from getting damp and deteriorating due to oxygen and moisture in the air, and extends the shelf life of the product.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a packing machine utilizing inert gas to protect glucosamine products, which comprises a main body unit, the main body unit comprises a base, the upper end face of the base is fixedly connected with a vertical rod, the upper end of the vertical rod is provided with a circular plate, the circular plate is symmetrically and fixedly connected with a plurality of connecting arms, the base is symmetrically and fixedly connected with a plurality of fixing plates, and the fixing plates are fixedly connected with the vertical rod. The fixing plates at the front end and the rear end are fixedly connected with L-shaped plates, and the two L-shaped plates are jointly and fixedly connected with a top plate. And the operation unit comprises a storage box and an air pump. A first electric telescopic rod is started, the telescopic end of the first electric telescopic rod drives a mounting plate and a connecting frame to move downwards, an inflation nozzle enters a packaging bag, an air pump is started, the air pump conveys inert gas to the inflation nozzle through a connecting pipe and a hose, the inert gas is introduced into the packaging bag, and air in the packaging bag is extruded out through the inert gas; the solid glucose is prevented from being affected with damp due to oxygen and moisture in the air.
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Description

Technical Field

[0001] The utility model relates to the technical field of glucose packaging machines, in particular to a packaging machine which utilizes inert gas to protect glucosamine products. Background Art

[0002] Glucosamine, also known as Glucosamine, is a natural amino monosaccharide that plays many important roles in human health. Glucosamine is widely present in nature, especially in the cell walls of fungi and the exoskeletons of shrimps and crabs. It is a component of chitin and chitosan.

[0003] The current packaging bag design for solid glucose is used for holding and filling. During filling, air enters the packaging bag along with the solid glucose. Due to the oxygen and moisture in the air, the glucose faces the risk of accelerated deterioration due to moisture, which directly leads to a significant shortening of the product's shelf life. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a packaging machine for protecting glucosamine products by using inert gas, in order to solve the problem that "the current packaging bag design used for solid glucose is used for holding and filling. During filling, air enters the packaging bag along with the solid glucose. Due to the oxygen and moisture in the air, the glucose faces the risk of accelerated deterioration due to moisture, which directly leads to a significant shortening of the shelf life of the product."

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A packaging machine for glucosamine products using inert gas protection, comprising:

[0008] The main unit comprises a base, the upper end surface of the base is fixedly connected to a vertical rod, the upper end of the vertical rod is provided with a circular plate, the circular plate is symmetrically fixedly connected to a plurality of connecting arms, the base is symmetrically fixedly connected to a plurality of fixing plates, the fixing plates at the front and rear ends are both fixedly connected to an L-shaped plate, and the two L-shaped plates are commonly fixedly connected to a top plate;

[0009] The operating unit comprises a storage box and an air pump, wherein the storage box is provided with an inert gas, the storage box is fixedly mounted on the top plate, the air pump is fixedly mounted on the front L-shaped plate, the input end of the air pump passes through the side wall of the storage box, the output end of the air pump is fixedly connected with a connecting pipe, the front end L-shaped plate is symmetrically fixedly connected with a connecting plate, each of the connecting plates is fixedly mounted with a No. 1 electric telescopic rod, the telescopic ends of the two No. 1 electric telescopic rods both pass through the connecting plate and are fixedly connected with a mounting plate, the lower end surface of the mounting plate is fixedly connected with a connecting frame, the connecting pipe passes through the L-shaped plate and is fixedly connected with a hose, an inflation nozzle is fixedly mounted in the hose, the lower end of the hose passes through the mounting plate and is connected with the inflation nozzle, a heat sealing assembly is arranged in the connecting frame, a No. 1 pushing assembly is connected to the fixed plate at the left end, a collecting box is fixedly connected to the fixed plate at the right end, each of the connecting arms is connected with a clamping assembly, a No. 2 pushing assembly is fixedly connected to the lower end surface of the top plate, a rotating groove is provided on the vertical rod, and a rotating assembly is arranged in the rotating groove.

[0010] As a preferred solution of the packaging machine for protecting glucosamine products using inert gas described in the utility model, the heat sealing component includes four No. 2 electric telescopic rods, and the telescopic ends of the corresponding two No. 2 electric telescopic rods are commonly fixedly connected with a rectangular plate, and each of the rectangular plates is fixedly installed with a heat sealing plate.

[0011] As a preferred solution of the packaging machine for glucosamine products using inert gas to protect the utility model, the No. 1 pushing component includes a No. 1 telescopic cylinder and a No. 1 pushing plate, the fixed plate at the left end is fixedly connected to a mounting block, the upper end surface of the mounting block is fixedly connected to a support rod, the upper end of the support rod is fixedly connected to a rectangular block, the rectangular block is provided with a placement groove, the No. 1 telescopic cylinder is fixedly installed on the rectangular block, the telescopic end of the No. 1 telescopic cylinder passes through the side wall of the rectangular block, and the No. 1 pushing plate is fixedly installed on the telescopic end of the No. 1 telescopic cylinder.

[0012] As a preferred solution of the packaging machine for glucosamine products using inert gas to protect the utility model, the clamping assembly includes a U-shaped plate, the U-shaped plate is fixedly connected to the connecting arm, and the U-shaped plate is symmetrically fixedly installed with a No. 3 electric telescopic rod, the telescopic ends of the No. 3 electric telescopic rod both penetrate the side wall of the U-shaped plate and are fixedly connected with a clamping block, and the clamping block is provided with a clamping groove.

[0013] As a preferred solution of the packaging machine for protecting glucosamine products using inert gas as described in the utility model, the No. 2 pushing component includes a vertical plate and a No. 2 telescopic cylinder, the vertical plate is fixedly connected to the lower end surface of the top plate, the No. 2 telescopic cylinder is fixedly installed on the vertical plate, and the telescopic end of the No. 2 telescopic cylinder is fixedly connected to the No. 2 pushing plate.

[0014] As a preferred solution of the packaging machine for glucosamine products using inert gas to protect the utility model, the rotating component includes a rotating motor, the rotating motor is fixedly installed in a rotating groove, the output end of the rotating motor is fixedly connected to a rotating rod, the rotating rod is fixedly sleeved with a connecting sleeve, the connecting sleeve is symmetrically fixedly connected to a plurality of L-shaped rods, and the upper end of each L-shaped rod is fixedly connected to the lower end surface of the circular plate.

[0015] Beneficial effects of the utility model:

[0016] 1. Start the No. 1 electric telescopic rod. The telescopic end of the No. 1 electric telescopic rod drives the mounting plate and the connecting frame to move downward. The inflation nozzle enters the packaging bag. Start the air pump. The air pump delivers the inert gas to the inflation nozzle through the connecting pipe and the hose. The inert gas enters the packaging bag. The inert gas squeezes out the air in the packaging bag to prevent the solid glucose from getting damp due to oxygen and moisture in the air.

[0017] 2. Start the No. 2 electric telescopic rod. The telescopic end of the No. 2 electric telescopic rod drives the rectangular plate to move. The rectangular plate drives the heat sealing plate to press against it. The heat generated by the heat sealing plate can seal the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 This is a schematic diagram of the structure of a packaging machine for glucosamine products using inert gas protection proposed by the utility model;

[0020] Figure 2 for Figure 1 A front view of

[0021] Figure 3 This is a schematic structural diagram of an air filling nozzle and a heat sealing component in a packaging machine for protecting glucosamine products using inert gas, as proposed by the utility model;

[0022] Figure 4 for Figure 1 Enlarged view of point A in the middle.

[0023] In the figure: 100, main unit; 101, base; 102, vertical rod; 103, round plate; 104, fixed plate; 105, L-shaped plate; 106, top plate;

[0024] 200, operation unit; 201, storage box; 202, air pump; 203, connecting pipe; 204, connecting plate; 205, No. 1 electric telescopic rod; 206, hose; 207, mounting plate; 208, connecting frame; 209, inflation nozzle; 210, heat sealing assembly; 210a, No. 2 electric telescopic rod; 210b, rectangular plate; 210c, heat sealing plate; 211, No. 1 push assembly; 211a, mounting block; 211b, support rod; 211c, rectangular block ; 211d, No. 1 telescopic cylinder; 211e, No. 1 push plate; 212, clamping assembly; 212a, U-shaped plate; 212b, No. 3 electric telescopic rod; 212c, clamping block; 213, No. 2 push assembly; 213a, vertical plate; 213b, No. 2 telescopic cylinder; 213c, No. 2 push plate; 214, collection box; 215, rotating assembly; 215a, rotating motor; 215b, rotating rod; 215c, connecting sleeve; 215d, L-shaped rod. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Reference Figure 1-4 The utility model provides a packaging machine for glucosamine products using inert gas protection, comprising:

[0030] The main unit 100 includes a base 101, the upper end surface of the base 101 is fixedly connected to a vertical rod 102, the upper end of the vertical rod 102 is provided with a circular plate 103, the circular plate 103 is symmetrically fixedly connected to a plurality of connecting arms, the base 101 is symmetrically fixedly connected to a plurality of fixing plates 104, the fixing plates 104 at the front and rear ends are both fixedly connected to an L-shaped plate 105, and the two L-shaped plates 105 are commonly fixedly connected to a top plate 106;

[0031] The operation unit 200 includes a storage box 201 and an air pump 202. The storage box 201 is provided with an inert gas. The storage box 201 is fixedly mounted on the top plate 106. The air pump 202 is fixedly mounted on the front L-shaped plate 105. The input end of the air pump 202 passes through the side wall of the storage box 201. The output end of the air pump 202 is fixedly connected with a connecting pipe 203. The front L-shaped plate 105 is symmetrically fixedly connected with a connecting plate 204. Each connecting plate 204 is fixedly mounted with a No. 1 electric telescopic rod 205. The telescopic ends of the two No. 1 electric telescopic rods 205 pass through the connecting plate 204 and are fixedly connected with a mounting plate 207. The lower end surface of the mounting plate 207 is fixedly connected with a connecting frame 208. The connecting pipe 203 passes through the L-shaped plate 105 and is fixedly connected with a hose 206. An inflation nozzle 209 is fixedly mounted in the hose 206. The lower end of the hose 206 passes through the mounting plate 207 and is connected with an inflation nozzle 209. The nozzle 209 is connected, a heat sealing component 210 is arranged in the connecting frame 208, a No. 1 pushing component 211 is connected to the left end fixing plate 104, a collecting box 214 is fixedly connected to the right end fixing plate 104, each connecting arm is connected to a clamping component 212, a No. 2 pushing component 213 is fixedly connected to the lower end surface of the top plate 106, a rotating groove is provided on the vertical rod 102, a rotating component 215 is arranged in the rotating groove, the No. 1 electric telescopic rod 205 is started, the telescopic end of the No. 1 electric telescopic rod 205 drives the mounting plate 207 and the connecting frame 208 to move downward, the inflation nozzle 209 enters the packaging bag, the air pump 202 is started, the air pump 202 conveys the inert gas to the inflation nozzle 209 through the connecting pipe 203 and the hose 206, the inert gas is passed into the packaging bag, the inert gas squeezes out the air in the packaging bag, and prevents the solid glucose from getting damp due to the oxygen and moisture in the air.

[0032] Among them, the heat sealing assembly 210 includes four No. 2 electric telescopic rods 210a, and the telescopic ends of the corresponding two No. 2 electric telescopic rods 210a are commonly fixedly connected with a rectangular plate 210b, and each rectangular plate 210b is fixedly installed with a heat sealing plate 210c. When the No. 2 electric telescopic rod 210a is started, the telescopic end of the No. 2 electric telescopic rod 210a drives the rectangular plate 210b to move, and the rectangular plate 210b drives the heat sealing plate 210c to press against it, and the heat emitted by the heat sealing plate 210c can seal the packaging bag.

[0033] Furthermore, the No. 1 pushing assembly 211 includes a No. 1 telescopic cylinder 211d and a No. 1 pushing plate 211e. The left end fixed plate 104 is fixedly connected to the mounting block 211a. The upper end surface of the mounting block 211a is fixedly connected to the support rod 211b. The upper end of the support rod 211b is fixedly connected to the rectangular block 211c. The rectangular block 211c is provided with a placement groove. The No. 1 telescopic cylinder 211d is fixedly installed on the rectangular block 211c. The telescopic end of the No. 1 telescopic cylinder 211d passes through the side wall of the rectangular block 211c. The No. 1 pushing plate 211e is fixedly installed on the telescopic end of the No. 1 telescopic cylinder 211d. The telescopic end of the No. 1 telescopic cylinder 211d drives the No. 1 pushing plate 211e to move, and the No. 1 pushing plate 211e pushes the packaging bag onto the paper U-shaped plate 212a.

[0034] Furthermore, the clamping assembly 212 includes a U-shaped plate 212a, which is fixedly connected to the connecting arm. The U-shaped plate 212a is symmetrically fixedly installed with a No. 3 electric telescopic rod 212b. The telescopic ends of the No. 3 electric telescopic rod 212b penetrate the side walls of the U-shaped plate 212a and are fixedly connected with a clamping block 212c. The clamping block 212c is provided with a clamping groove. The telescopic end of the No. 3 electric telescopic rod 212b drives the clamping block 212c to move, and the packaging bag is clamped in the clamping grooves of the two clamping blocks 212c.

[0035] Furthermore, the No. 2 pushing assembly 213 includes a vertical plate 213a and a No. 2 telescopic cylinder 213b, the vertical plate 213a is fixedly connected to the lower end surface of the top plate 106, the No. 2 telescopic cylinder 213b is fixedly installed on the vertical plate 213a, the telescopic end of the No. 2 telescopic cylinder 213b is fixedly connected to the No. 2 pushing plate 213c, the telescopic end of the No. 3 electric telescopic rod 212b drives the two clamping blocks 212c to face each other, the No. 2 telescopic cylinder 213b is started, the telescopic end of the No. 2 telescopic cylinder 213b drives the No. 2 pushing plate 213c to move, and the No. 2 pushing plate 213c pushes the sealed packaging bag into 214c.

[0036] Furthermore, the rotating assembly 215 includes a rotating motor 215a, which is fixedly installed in the rotating groove. The output end of the rotating motor 215a is fixedly connected to a rotating rod 215b, and the rotating rod 215b is fixedly sleeved with a connecting sleeve 215c. The connecting sleeve 215c is symmetrically fixedly connected to multiple L-shaped rods 215d, and the upper end of each L-shaped rod 215d is fixedly connected to the lower end surface of the circular plate 103. The output end of the rotating motor 215a drives the rotating rod 215b to rotate, and the rotating rod 215b drives the circular plate 103 to rotate through the connecting sleeve 215c and the L-shaped rod 215d.

[0037] During use, a packaging bag filled with solid glucose is placed in the placement slot of the rectangular block 211c, and the No. 1 telescopic cylinder 211d is started. The telescopic end of the No. 1 telescopic cylinder 211d drives the No. 1 push plate 211e to move. The No. 1 push plate 211e pushes the packaging bag onto the paper U-shaped plate 212a, and the No. 3 electric telescopic rod 212b is started. The telescopic end of the No. 3 electric telescopic rod 212b drives the clamping block 212c to move. The packaging bag is clamped between the two clamping blocks 211c. 2c, the rotating motor 215a is started, and the output end of the rotating motor 215a drives the rotating rod 215b to rotate, and the rotating rod 215b drives the circular plate 103 to rotate through the connecting sleeve 215c and the L-shaped rod 215d, thereby driving the clamped packaging bag to rotate, and the packaging bag rotates to the lower end of the connecting frame 208, and the No. 1 electric telescopic rod 205 is started, and the telescopic end of the No. 1 electric telescopic rod 205 drives the mounting plate 207 and the connecting frame 208 to move downward, and the packaging bag is filled with The air nozzle 209 enters the packaging bag, and the air pump 202 is started. The air pump 202 delivers the inert gas to the inflation nozzle 209 through the connecting pipe 203 and the hose 206. The inert gas is passed into the packaging bag, and the inert gas squeezes out the air in the packaging bag. When the air is completely squeezed out, the second electric telescopic rod 210a is started, and the telescopic end of the second electric telescopic rod 210a drives the rectangular plate 210b to move, and the rectangular plate 210b drives the heat sealing plate 210c to press against the heat sealing plate 210c. The heat emitted by 0c can seal the packaging bag, and the sealed packaging bag is rotated to the top of the collection box 214 through the rotating component 215 again, and the No. 3 electric telescopic rod 212b is started, and the telescopic end of the No. 3 electric telescopic rod 212b drives the two clamping blocks 212c to face each other, and the No. 2 telescopic cylinder 213b is started, and the telescopic end of the No. 2 telescopic cylinder 213b drives the No. 2 push plate 213c to move, and the No. 2 push plate 213c pushes the sealed packaging bag into 214c.

[0038] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A packaging machine for glucosamine products using inert gas protection, characterized in that: include: The main unit (100) comprises a base (101), the upper end surface of the base (101) is fixedly connected to a vertical rod (102), the upper end of the vertical rod (102) is provided with a circular plate (103), the circular plate (103) is symmetrically fixedly connected to a plurality of connecting arms, the base (101) is symmetrically fixedly connected to a plurality of fixing plates (104), the fixing plates (104) at the front and rear ends are both fixedly connected to an L-shaped plate (105), and the two L-shaped plates (105) are commonly fixedly connected to a top plate (106); The operation unit (200) comprises a storage box (201) and an air pump (202), wherein an inert gas is provided in the storage box (201), the storage box (201) is fixedly mounted on a top plate (106), the air pump (202) is fixedly mounted on a front L-shaped plate (105), the input end of the air pump (202) passes through a side wall of the storage box (201), the output end of the air pump (202) is fixedly connected to a connecting pipe (203), the front L-shaped plate (105) is symmetrically fixedly connected to a connecting plate (204), each connecting plate (204) is fixedly mounted with a No. 1 electric telescopic rod (205), the telescopic ends of the two No. 1 electric telescopic rods (205) pass through the connecting plate (204) and are fixedly connected to a mounting plate (207), and the lower end surface of the mounting plate (207) A connecting frame (208) is fixedly connected, the connecting pipe (203) passes through the L-shaped plate (105) and is fixedly connected to a hose (206), an air filling nozzle (209) is fixedly installed in the hose (206), the lower end of the hose (206) passes through the mounting plate (207) and is connected to the air filling nozzle (209), a heat sealing component (210) is arranged in the connecting frame (208), a first pushing component (211) is connected to the fixed plate (104) at the left end, a collecting box (214) is fixedly connected to the fixed plate (104) at the right end, each of the connecting arms is connected to a clamping component (212), a second pushing component (213) is fixedly connected to the lower end surface of the top plate (106), a rotating groove is provided on the vertical rod (102), a rotating component (215) is arranged in the rotating groove.

2. The packaging machine for glucosamine products using inert gas protection according to claim 1, characterized in that: The heat sealing assembly (210) comprises four No. 2 electric telescopic rods (210a), the telescopic ends of two corresponding No. 2 electric telescopic rods (210a) being fixedly connected to a rectangular plate (210b), and each rectangular plate (210b) being fixedly mounted with a heat sealing plate (210c).

3. The packaging machine for glucosamine products using inert gas protection according to claim 1, characterized in that: The No. 1 pushing assembly (211) comprises a No. 1 telescopic cylinder (211d) and a No. 1 pushing plate (211e); the fixed plate (104) at the left end is fixedly connected to a mounting block (211a); the upper end surface of the mounting block (211a) is fixedly connected to a support rod (211b); the upper end of the support rod (211b) is fixedly connected to a rectangular block (211c); the rectangular block (211c) is provided with a placement groove; the No. 1 telescopic cylinder (211d) is fixedly mounted on the rectangular block (211c); the telescopic end of the No. 1 telescopic cylinder (211d) passes through the side wall of the rectangular block (211c); and the No. 1 pushing plate (211e) is fixedly mounted on the telescopic end of the No. 1 telescopic cylinder (211d).

4. The packaging machine for glucosamine products using inert gas protection according to claim 1, characterized in that: The clamping assembly (212) comprises a U-shaped plate (212a), the U-shaped plate (212a) is fixedly connected to the connecting arm, and a third electric telescopic rod (212b) is symmetrically fixedly installed on the U-shaped plate (212a), and the telescopic ends of the third electric telescopic rod (212b) both penetrate the side wall of the U-shaped plate (212a) and are fixedly connected to a clamping block (212c), and the clamping block (212c) is provided with a clamping groove.

5. The packaging machine for glucosamine products using inert gas protection according to claim 1, characterized in that: The No. 2 pushing assembly (213) comprises a vertical plate (213a) and a No. 2 telescopic cylinder (213b), wherein the vertical plate (213a) is fixedly connected to the lower end surface of the top plate (106), the No. 2 telescopic cylinder (213b) is fixedly installed on the vertical plate (213a), and the telescopic end of the No. 2 telescopic cylinder (213b) is fixedly connected to the No. 2 pushing plate (213c).

6. The packaging machine for glucosamine products using inert gas protection according to claim 1, characterized in that: The rotating assembly (215) comprises a rotating motor (215a), the rotating motor (215a) is fixedly mounted on a rotating groove, the output end of the rotating motor (215a) is fixedly connected to a rotating rod (215b), the rotating rod (215b) is fixedly sleeved with a connecting sleeve (215c), the connecting sleeve (215c) is symmetrically fixedly connected to a plurality of L-shaped rods (215d), and the upper end of each L-shaped rod (215d) is fixedly connected to the lower end surface of the circular plate (103).