Quantitative discharging mechanism of salt packaging machine

Abstract

The utility model discloses a quantitative discharging mechanism of a salt packaging machine, which comprises a storage component, a quantitative component, a first driving component and a second driving component, and the storage component comprises a storage box; the quantifying assembly is arranged below the material storage box and comprises a plurality of measuring cylinders which are arranged in the circumferential direction, and each measuring cylinder is of a telescopic structure; the first driving assembly is connected with all the measuring cylinders and used for driving all the measuring cylinders to stretch out and draw back synchronously so as to adjust the lengths of all the measuring cylinders; and the second driving assembly is connected with each measuring cylinder. The measuring cylinder has the advantages that the capacity of the measuring cylinder can be adjusted, the measuring cylinder can limit salt with the mass number within a certain range, when salt with the mass number of other specifications needs to be packaged, the length of each measuring cylinder is adjusted to the preset length according to the salt pre-packaging mass number, the measuring cylinders with other capacities do not need to be replaced, and the measuring cylinder is quite convenient to use. And the universality of the quantitative discharging mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of food processing equipment technology, and in particular to a quantitative feeding mechanism for a salt packaging machine. Background Technology

[0002] A packaging machine is a machine used to package products, primarily for protection and aesthetic enhancement. Packaging machines are mainly divided into two types: assembly line-style integrated packaging and peripheral product packaging equipment. Currently, small-bag salt packaging machines are often used for packaging small bags of salt.

[0003] Existing small-bag salt packaging machines (such as the fully automatic small-bag salt packaging machine disclosed in application number 202020760961.3) involve a turntable rotating to the feeding station and then to the unloading station when packaging salt. When the turntable rotates to the feeding station, the salt falls from the material outlet into the measuring cylinder on the turntable. When the turntable rotates to the unloading station, the salt in the measuring cylinder falls into the discharge pipe. The measuring cylinder serves to limit the mass of the salt being packaged. However, the capacity of the measuring cylinder in this structure is not adjustable, which means that the measuring cylinder can only limit a specific mass of salt. When it is necessary to package salt of other specifications and masses, it is necessary to replace the measuring cylinder with one of other capacities, which is quite troublesome and also results in poor versatility of the quantitative feeding mechanism of the packaging machine. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a quantitative feeding mechanism for a salt packaging machine, which solves the technical problem that the capacity of the measuring cylinder is not adjustable in the prior art, resulting in the measuring cylinder being able to limit the amount of salt to a specific mass.

[0005] To achieve the above technical objectives, the present invention provides a quantitative feeding mechanism for a salt packaging machine, comprising:

[0006] A material storage assembly, which includes a material storage bin;

[0007] A metering component is located below the storage tank and includes several measuring cylinders, which are retractable.

[0008] The first drive component is connected to each of the graduated cylinders and is used to drive each graduated cylinder to extend and retract synchronously in order to adjust the length of each graduated cylinder.

[0009] Furthermore, a discharge port is provided at the bottom of the storage box, and a feeding port is provided at the top of the storage box.

[0010] Furthermore, the quantitative feeding mechanism of the salt packaging machine also includes a second driving component. The quantitative component includes a plurality of measuring cylinders arranged circumferentially. The second driving component is connected to each of the measuring cylinders and is used to drive each measuring cylinder to rotate synchronously in the horizontal plane so that each measuring cylinder passes through the loading station and the unloading station in sequence. When the measuring cylinder is located at the loading station, the measuring cylinder is connected to the discharge port of the storage box.

[0011] Furthermore, the measuring cylinder is vertically arranged, with openings at both the top and bottom. The quantitative assembly also includes a sealing plate and multiple cover plates. The sealing plate is horizontally positioned directly above each measuring cylinder and rotatably abuts against the bottom of the storage box. The bottom of the storage box is a flat surface. Multiple flow ports are circumferentially opened on the sealing plate. The openings at the top of each measuring cylinder correspond to and communicate with each flow port. The second driving assembly is connected to the sealing plate and is used to drive the sealing plate to rotate in the horizontal plane. Each cover plate is positioned directly below the corresponding measuring cylinder and is used to seal the openings at the bottom of each measuring cylinder.

[0012] Furthermore, the measuring cylinder includes a fixed cylinder section and an adjusting cylinder section arranged from top to bottom, wherein the fixed cylinder section and the adjusting cylinder section are slidably connected and communicate with each other.

[0013] Furthermore, the quantitative component also includes a connecting plate, which is horizontally positioned directly below the sealing plate. The connecting plate has multiple mounting ports along its circumference and is fixedly fitted onto the outer wall of the corresponding adjusting cylinder section via each mounting port. The first driving component is connected to the connecting plate and is used to drive the connecting plate to move up and down.

[0014] Furthermore, the metering component also includes multiple elastic elements. One side of the cover plate is hinged to the adjusting cylinder section. One end of each elastic element is connected to each adjusting cylinder section in a corresponding manner, and the other end of each elastic element is connected to the other side of each cover plate in a corresponding manner, so that each cover plate is respectively placed over the opening at the bottom of the corresponding measuring cylinder.

[0015] Furthermore, the first driving assembly includes multiple limiting rods and a first telescopic driving member. Each of the limiting rods is vertically arranged circumferentially below the sealing plate, and the top of each limiting rod is fixedly connected to the sealing plate. The connecting plate is slidably sleeved on each of the limiting rods. The output end of the first telescopic driving member is fixedly connected to the connecting plate and is used to drive the connecting plate to move up and down.

[0016] Furthermore, the second driving component includes a rotating shaft and a rotation driving component. The rotating shaft is vertically arranged and coaxial with the circular space enclosed by each of the measuring cylinders. The lower end of the rotating shaft passes through the sealing plate and the connecting plate and is fixedly connected to the sealing plate and rotatably connected to the connecting plate. The upper end of the rotating shaft rotatably passes through the storage box. The output end of the rotation driving component is connected to the upper end of the rotating shaft and is used to drive the rotating shaft to rotate.

[0017] Furthermore, the quantitative feeding mechanism of the salt packaging machine also includes a third driving mechanism. The third driving mechanism is disposed above each of the cover plates and located at the feeding station. When the measuring cylinder is located at the feeding station, the third driving mechanism abuts against the cover plate and pushes the cover plate to rotate downward so that the cover plate moves away from the opening at the bottom of the measuring cylinder.

[0018] Compared with the prior art, the beneficial effects of this utility model include: In use, salt is loaded into the storage box, and the length of each measuring cylinder is adjusted to a preset length according to the pre-packaged weight of salt, ensuring that the measuring cylinder is filled with salt to achieve the pre-packaged weight. By controlling the first drive component, the first drive component drives each measuring cylinder to extend and retract synchronously, and the length of each measuring cylinder can be adjusted synchronously. In this utility model, the capacity of the measuring cylinder is adjustable, and the measuring cylinder can limit the weight of salt within a certain range. When it is necessary to package salt of other specifications and weights, the length of each measuring cylinder is adjusted to a preset length according to the pre-packaged weight of salt, and there is no need to change to measuring cylinders of other capacities, which is very convenient and improves the versatility of the quantitative feeding mechanism. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a quantitative feeding mechanism for a salt packaging machine provided by this utility model;

[0020] Figure 2 yes Figure 1 A cross-sectional view of the quantitative feeding mechanism of a salt packaging machine;

[0021] Figure 3 yes Figure 2 A three-dimensional structural diagram of the quantitative feeding mechanism of a salt packaging machine from another perspective;

[0022] In the diagram: 100 - Storage assembly, 110 - Storage bin, 111 - Discharge port, 112 - Feeding port, 120 - Guide block, 130 - Guide ring, 200 - Quantitative assembly, 210 - Measuring cylinder, 211 - Fixed cylinder section, 212 - Adjusting cylinder section, 220 - Sealing plate, 221 - Flow port, 230 - Cover plate, 240 - Connecting plate, 241 - Mounting port, 250 - Elastic element, 300 - First drive assembly, 310 - Limiting rod, 320 - First telescopic drive component, 400 - Second drive assembly, 410 - Rotating shaft, 420 - Rotation drive component, 500 - Third drive mechanism, 510 - Ear seat, 520 - Second telescopic drive component, 600 - Pushing mechanism, 610 - Pushing plate, 620 - Connecting rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0024] This utility model provides a quantitative feeding mechanism for a salt packaging machine, the structure of which is as follows: Figure 1 and Figure 2 As shown, the device includes a storage component 100, a metering component 200, a first driving component 300, and a second driving component 400. The storage component 100 includes a storage tank 110. The metering component 200 is disposed below the storage tank 110 and includes a plurality of measuring cylinders 210, which are telescopic. The first driving component 300 is connected to each of the measuring cylinders 210 and is used to drive each measuring cylinder 210 to extend and retract synchronously to adjust the length of each measuring cylinder 210.

[0025] In use, salt is loaded into the storage box 110. The length of each measuring cylinder 210 is adjusted to a preset length according to the pre-packaged weight of salt, ensuring that the measuring cylinder 210 is filled with salt to achieve the pre-packaged weight. By operating the first drive component 300, the first drive component 300 drives each measuring cylinder 210 to extend and retract synchronously, allowing for synchronous adjustment of the length of each measuring cylinder 210. In this invention, the capacity of the measuring cylinder 210 is adjustable, and the measuring cylinder 210 can limit the weight of salt within a certain range. When it is necessary to package salt of other specifications and weights, the length of each measuring cylinder 210 is adjusted to a preset length according to the pre-packaged weight of salt, eliminating the need to replace the measuring cylinder 210 with one of different capacities. This is very convenient and improves the versatility of the quantitative feeding mechanism.

[0026] As a preferred embodiment, please refer to Figure 2The storage tank 110 has a discharge port 111 at the bottom and a feeding port 112 at the top. Salt can be added into the storage tank 110 through the feeding port 112. The salt in the storage tank 110 can be discharged through the discharge port 111 and enter the measuring cylinder 210 below.

[0027] As a preferred embodiment, please refer to Figure 2 and Figure 3 The quantitative feeding mechanism of the salt packaging machine further includes a second driving component 400. The quantitative component 400 includes multiple measuring cylinders 210 arranged circumferentially. The second driving component 400 is connected to each measuring cylinder 210 and is used to drive each measuring cylinder 210 to rotate synchronously in the horizontal plane, so that each measuring cylinder 210 passes through the loading station and the unloading station in sequence. When the measuring cylinder 210 is at the loading station, the measuring cylinder 210 is connected to the discharge port 111 of the storage box 110 to load salt into the storage box 110. A receiving hopper is set below the unloading station. The length of each measuring cylinder 210 is adjusted to a preset length according to the pre-packaged salt weight, so that the pre-packaged weight can be achieved after the measuring cylinder 210 is filled with salt. By manipulating the first drive component 300, the first drive component 300 drives each measuring cylinder 210 to extend and retract synchronously, thereby synchronously adjusting the length of each measuring cylinder 210. Then, by manipulating the second drive component 400, the second drive component 400 drives each measuring cylinder 210 to rotate synchronously in the horizontal plane, so that each measuring cylinder 210 passes through the loading station and the unloading station in sequence. When the measuring cylinder 210 is in the loading station, the measuring cylinder 210 is connected to the discharge port 111, and the salt in the storage box 110 enters the measuring cylinder 210. When the measuring cylinder 210 is in the unloading station, the outlet end of the measuring cylinder 210 opens, and the salt in the measuring cylinder 210 enters the receiving hopper below, completing the quantitative feeding of salt.

[0028] As a preferred embodiment, please refer to Figure 2 and Figure 3The measuring cylinder 210 is vertically arranged, with openings at both the top and bottom. The quantitative assembly 200 also includes a sealing plate 220 and multiple cover plates 230. The sealing plate 220 is horizontally positioned directly above each measuring cylinder 210 and rotatably abuts against the bottom of the storage tank 110. The bottom of the storage tank 110 is a flat surface. Multiple flow ports 221 are circumferentially formed on the sealing plate 220, with each opening at the top of the measuring cylinder 210 corresponding to and communicating with each flow port 221. The second driving assembly 400 is connected to the sealing plate 220 and is used to drive the sealing plate 220 in... Rotating in the horizontal plane, each of the cover plates 230 is respectively positioned directly below each of the corresponding measuring cylinders 210 to block the openings at the bottom of each measuring cylinder 210. The sealing plate 220 can block the discharge port 111, so that when the measuring cylinder 210 and the discharge port 111 are not connected, the salt in the storage box 110 cannot be discharged from the discharge port 111. The cover plate 230 allows the opening at the bottom of the measuring cylinder 210 to be in an open or closed state. When the measuring cylinder 210 is in the unloading position, the opening at the bottom of the measuring cylinder 210 is opened to discharge the material.

[0029] As a preferred embodiment, please refer to Figure 2 and Figure 3 The measuring cylinder 210 includes a fixed cylinder section 211 and an adjusting cylinder section 212 arranged from top to bottom. The fixed cylinder section 211 and the adjusting cylinder section 212 are slidably sleeved and connected to each other, so that the length of the measuring cylinder 210 can be adjusted. In actual use, the adjusting cylinder section 212 is slidably sleeved on the outer wall of the fixed cylinder section 211, or the fixed cylinder section 211 is slidably sleeved on the outer wall of the adjusting cylinder section 212. Salt can enter the measuring cylinder 210 through the opening at the top of the measuring cylinder 210, and the salt in the measuring cylinder 210 can be discharged through the opening at the bottom of the measuring cylinder 210.

[0030] As a preferred embodiment, please refer to Figure 2 and Figure 3 The quantitative component 200 further includes a connecting plate 240, which is horizontally disposed directly below the sealing plate 220. The connecting plate 240 has a plurality of mounting holes 241 circumferentially opened on its surface, and is fixedly sleeved onto the outer wall of the corresponding adjusting cylinder section 212 through each mounting hole 241. The first driving component 300 is connected to the connecting plate 240 and is used to drive the connecting plate 240 to move up and down. The connecting plate 240 can connect the adjusting cylinder sections 212 into a whole, so that the up and down movement of the adjusting cylinder sections 212 is synchronized.

[0031] As a preferred embodiment, please refer to Figure 2 and Figure 3 The quantitative component 200 also includes a plurality of elastic elements 250. One side of the cover plate 230 is hinged to the adjusting cylinder section 212. One end of each elastic element 250 is connected to each adjusting cylinder section 212 in a corresponding manner, and the other end of each elastic element 250 is connected to the other side of each cover plate 230 in a corresponding manner, so that each cover plate 230 covers the opening at the bottom of the corresponding measuring cylinder 210. In actual use, one end of each elastic element 250 is connected to the connecting plate 240. Under the elastic tension of the elastic element 250, the cover plate 230 can cover the opening at the bottom of the measuring cylinder 210, so that the opening at the bottom of the measuring cylinder 210 is kept in a closed state.

[0032] In a preferred embodiment, the elastic element 250 is a spring, which, under its own elastic tension, allows the cover plate 230 to cover the opening at the bottom of the measuring cylinder 210.

[0033] As a preferred embodiment, please refer to Figure 2 and Figure 3 The first driving assembly 300 includes multiple limiting rods 310 and a first telescopic driving member 320. Each limiting rod 310 is vertically arranged circumferentially below the sealing plate 220, and the top of each limiting rod 310 is fixedly connected to the sealing plate 220. The connecting plate 240 is slidably sleeved on each limiting rod 310. The output end of the first telescopic driving member 320 is fixedly connected to the connecting plate 240 and is used to drive the connecting plate 240 to move up and down. When the first telescopic driving member 320 is activated, it drives the connecting plate 240 to move up and down, and drives each adjusting cylinder segment 212 to move up and down synchronously, so that the length of each measuring cylinder 210 can be adjusted synchronously. In other embodiments, when there is only one measuring cylinder 210, the first telescopic driving member 320 is directly connected to the adjusting cylinder segment 212 of the measuring cylinder 210, and drives the adjusting cylinder segment 212 to move up and down relative to the fixed cylinder segment 211, thereby realizing the telescopic movement of the measuring cylinder 210.

[0034] As a preferred embodiment, please refer to Figure 2 and Figure 3The second driving component 400 includes a rotating shaft 410 and a rotation driving component 420. The rotating shaft 410 is vertically arranged and coaxial with the circular space enclosed by each measuring cylinder 210. The lower end of the rotating shaft 410 passes through the sealing plate 220 and the connecting plate 240 and is fixedly connected to the sealing plate 220 and rotatably connected to the connecting plate 240. The upper end of the rotating shaft 410 rotatably passes through the storage box 110. The output end of the rotation driving component 420 is connected to the upper end of the rotating shaft 410 and is used to drive the rotating shaft 410 to rotate. When the rotation driving component 420 is activated, it drives the rotating shaft 410 to rotate, which in turn drives the sealing plate 220 to rotate, and then drives each measuring cylinder 210 to rotate synchronously, so that each measuring cylinder 210 passes through the upper and lower workstations and the unloading workstation in sequence.

[0035] As a preferred embodiment, please refer to Figure 3 The first telescopic drive member 320 is disposed below the connecting plate 240. The fixed end of the first telescopic drive member 320 is connected to the lower end of the rotating shaft 410. The rotating shaft 410 can support the first telescopic drive member 320, so that the first telescopic drive member 320 can rotate synchronously with the rotating shaft 410.

[0036] As a preferred embodiment, please refer to Figure 1 The quantitative feeding mechanism of the salt packaging machine further includes a third driving mechanism 500. The third driving mechanism 500 is disposed above each of the cover plates 230 and located at the feeding station. When the measuring cylinder 210 is located at the feeding station, the third driving mechanism 500 abuts against the cover plate 230 and pushes the cover plate 230 to rotate downward, so that the cover plate 230 is moved away from the opening at the bottom of the measuring cylinder 210. This avoids the problem of setting opening and closing parts on each of the measuring cylinders 210, reduces the number of opening and closing parts, and lowers costs.

[0037] As a preferred embodiment, please refer to Figure 1 and Figure 2 The third driving mechanism 500 includes an ear seat 510 and a second telescopic driving member 520. The ear seat 510 is fixedly connected to the outer wall of the storage box 110. The fixed end of the second telescopic driving member 520 is hinged to the ear seat 510. The output end of the second telescopic driving member 520 is used to abut against the cover plate 230 to push the cover plate 230 to rotate downward. When the measuring cylinder 210 is in the unloading position, the second telescopic driving member 520 is activated, the output end of the second telescopic driving member 520 extends, abuts against the cover plate 230, and pushes the cover plate 230 to rotate downward. The opening at the bottom of the measuring cylinder 210 opens, and the salt in the measuring cylinder 210 is discharged.

[0038] As a preferred embodiment, please refer to Figure 2 The storage assembly 100 further includes a guide block 120 and a guide ring 130. The guide block 120 is disposed inside the storage tank 110 and located inside the discharge port 111. The outer side wall of the guide block 120 has a conical structure. The guide ring 130 is disposed inside the storage tank 110 and located outside the discharge port 111. The inner side wall of the guide ring 130 has a conical structure. The guide block 120 and the guide ring 130 enclose a ring-shaped feeding area. The guide block 120 and the guide ring 130 can guide the salt in the storage tank 110 so that the salt can fall into the feeding area.

[0039] As a preferred embodiment, please refer to Figure 2 The quantitative feeding mechanism of the salt packaging machine further includes a pushing mechanism 600, which is disposed in the storage box 110 to push the salt in the storage box 110 to the discharge port 111, so that the salt in the storage box 110 can be discharged.

[0040] As a preferred embodiment, please refer to Figure 2 The pushing mechanism 600 includes a pushing plate 610 and a connecting rod 620. The pushing plate 610 is disposed in the feeding area and is slidably connected to the bottom surface of the storage box 110. One end of the connecting rod 620 is fixedly connected to the pushing plate 610, and the other end of the connecting rod 620 is fixedly connected to the rotating shaft 410. When the salt in the storage box 110 is low, the rotating shaft 410 can drive the pushing plate 610 to rotate via the connecting rod 620 during rotation, thereby pushing the salt in other positions in the feeding area to the discharge port 111. The pushing plate 610 can also scrape the salt at the top of the measuring cylinder 210.

[0041] To better understand this utility model, the following is combined with... Figure 1 - Figure 3 The working principle of the technical solution of this utility model will be described in detail below:

[0042] In use, salt is loaded into the storage box 110 through the feeding port 112, and a receiving hopper is set below the feeding station. The length of each measuring cylinder 210 is adjusted to a preset length according to the pre-packaged salt weight, ensuring that the measuring cylinder 210, once filled with salt, reaches the pre-packaged weight. By operating the first telescopic drive component 320, the connecting plate 240 moves up and down, causing each adjusting cylinder section 212 to move up and down synchronously. This allows for the adjustment of each measuring cylinder 210. The length of 0 is adjusted synchronously, and then the rotation drive 420 is operated to drive the rotating shaft 410 to rotate, which in turn drives the sealing plate 220 to rotate, and then drives each measuring cylinder 210 to rotate synchronously, so that each measuring cylinder 210 passes through the upper and lower stations and the unloading station in sequence. When the measuring cylinder 210 is in the upper station, the opening at the top of the measuring cylinder 210 is connected to the discharge port 111, and the salt in the storage box 110 enters the measuring cylinder 210. When the measuring cylinder 210 is in the unloading station... When in position, by manipulating the second telescopic drive 520, the output end of the second telescopic drive 520 extends and abuts against the cover plate 230, pushing the cover plate 230 to rotate downwards. The opening at the bottom of the measuring cylinder 210 opens, and the salt in the measuring cylinder 210 is discharged and enters the receiving hopper below, completing the quantitative feeding of salt. After the salt in the measuring cylinder 210 is discharged, by manipulating the second telescopic drive 520 again, the output end of the second telescopic drive 520 retracts, and the cover plate 230 is positioned relative to the elastic element. Under the elastic tension of 250, it is covered again at the opening at the bottom of the measuring cylinder 210, sealing the opening at the bottom of the measuring cylinder 210. In this utility model, the capacity of the measuring cylinder 210 is adjustable, and the measuring cylinder 210 can limit the mass of salt within a certain range. When it is necessary to package salt of other specifications and mass, the length of each measuring cylinder 210 is adjusted to the preset length according to the pre-packaged mass of salt, and there is no need to replace the measuring cylinder 210 of other capacities, which is very convenient and improves the versatility of the quantitative feeding mechanism.

[0043] The quantitative feeding mechanism for a salt packaging machine provided by this utility model has the following beneficial effects:

[0044] (1) The guide block 120 and the guide ring 130 can guide the salt in the storage box 110 so that the salt can fall into the feeding area. When the salt in the storage box 110 is less, the rotating shaft 410 can drive the push plate 610 to rotate via the connecting rod 620 during rotation, so that the salt in other positions in the feeding area can be pushed to the outlet 111 so that the salt in the storage box 110 can be discharged. The push plate 610 can also scrape the salt on the top of the measuring cylinder 210.

[0045] (2) When the measuring cylinder 210 is in the unloading station, the second telescopic drive 520 is activated, the output end of the second telescopic drive 520 extends and abuts against the cover plate 230, and pushes the cover plate 230 to rotate downward, the opening at the bottom of the measuring cylinder 210 opens, and the salt in the measuring cylinder 210 is discharged. After the salt in the measuring cylinder 210 is discharged, the output end of the second telescopic drive 520 is retracted by operating the second telescopic drive 520. Under the elastic tension of the elastic member 250, the cover plate 230 is covered again at the opening at the bottom of the measuring cylinder 210 to seal the opening at the bottom of the measuring cylinder 210. This can avoid the problem of setting opening and closing parts on each measuring cylinder 210, reduce the number of opening and closing parts, and reduce costs.

[0046] (3) In this utility model, the capacity of the measuring cylinder 210 can be adjusted. The measuring cylinder 210 can limit the mass of salt within a certain range. When it is necessary to package salt of other specifications, the length of each measuring cylinder 210 is adjusted to the preset length according to the pre-packaged mass of salt. It is no longer necessary to replace the measuring cylinder 210 of other capacities, which is very convenient and improves the versatility of the quantitative feeding mechanism.

[0047] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A quantitative feeding mechanism for a salt packaging machine, characterized in that, include: A material storage assembly, which includes a material storage bin; A metering component is located below the storage tank and includes several measuring cylinders, which are retractable. The first drive component is connected to each of the graduated cylinders and is used to drive each graduated cylinder to extend and retract synchronously in order to adjust the length of each graduated cylinder.

2. The quantitative feeding mechanism of the salt packaging machine according to claim 1, characterized in that, The storage bin has a discharge port at the bottom and a feeding port at the top.

3. The quantitative feeding mechanism of the salt packaging machine according to claim 2, characterized in that, It also includes a second driving component, the quantitative component including a plurality of measuring cylinders arranged circumferentially, the second driving component being connected to each of the measuring cylinders and used to drive each of the measuring cylinders to rotate synchronously in the horizontal plane, so that each of the measuring cylinders passes through the loading station and the unloading station in sequence, and when the measuring cylinder is located at the loading station, the measuring cylinder is connected to the discharge port of the storage box.

4. The quantitative feeding mechanism of the salt packaging machine according to claim 3, characterized in that, The measuring cylinders are vertically arranged, with openings at both the top and bottom. The quantitative assembly also includes a sealing plate and multiple cover plates. The sealing plate is horizontally positioned directly above each measuring cylinder and rotates against the bottom of the storage bin. The bottom of the storage bin is a flat surface. Multiple flow ports are circumferentially formed on the sealing plate. The openings at the top of each measuring cylinder correspond to and communicate with each flow port. The second driving assembly is connected to the sealing plate and is used to drive the sealing plate to rotate in the horizontal plane. Each cover plate is positioned directly below the corresponding measuring cylinder and is used to seal the openings at the bottom of each measuring cylinder.

5. The quantitative feeding mechanism of the salt packaging machine according to claim 4, characterized in that, The measuring cylinder includes a fixed section and an adjusting section arranged from top to bottom, wherein the fixed section and the adjusting section are slidably connected and communicate with each other.

6. The quantitative feeding mechanism of the salt packaging machine according to claim 5, characterized in that, The quantitative component also includes a connecting plate, which is horizontally positioned directly below the sealing plate. The connecting plate has multiple mounting ports along its circumference and is fixedly fitted onto the outer wall of the corresponding adjusting cylinder section through each mounting port. The first driving component is connected to the connecting plate and is used to drive the connecting plate to move up and down.

7. The quantitative feeding mechanism of the salt packaging machine according to claim 6, characterized in that, The metering component also includes multiple elastic elements. One side of the cover plate is hinged to the adjusting cylinder section. One end of each elastic element is connected to each adjusting cylinder section in a corresponding manner, and the other end of each elastic element is connected to the other side of each cover plate in a corresponding manner, so that each cover plate is respectively placed over the opening at the bottom of the corresponding measuring cylinder.

8. The quantitative feeding mechanism of the salt packaging machine according to claim 6, characterized in that, The first driving assembly includes multiple limiting rods and a first telescopic driving component. Each limiting rod is vertically arranged circumferentially below the sealing plate. The top of each limiting rod is fixedly connected to the sealing plate. The connecting plate is slidably sleeved on each limiting rod. The output end of the first telescopic driving component is fixedly connected to the connecting plate and is used to drive the connecting plate to move up and down.

9. The quantitative feeding mechanism of the salt packaging machine according to claim 6, characterized in that, The second driving component includes a rotating shaft and a rotation driving component. The rotating shaft is vertically arranged and coaxial with the circular space enclosed by each of the measuring cylinders. The lower end of the rotating shaft passes through the sealing plate and the connecting plate and is fixedly connected to the sealing plate and rotatably connected to the connecting plate. The upper end of the rotating shaft rotatably passes through the storage box. The output end of the rotation driving component is connected to the upper end of the rotating shaft and is used to drive the rotating shaft to rotate.

10. The quantitative feeding mechanism of the salt packaging machine according to claim 4, characterized in that, It also includes a third driving mechanism, which is disposed above each of the cover plates and located at the unloading station. When the measuring cylinder is located at the unloading station, the third driving mechanism abuts against the cover plate and pushes the cover plate to rotate downward so that the cover plate moves away from the opening at the bottom of the measuring cylinder.

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