Feeding mechanism and packaging equipment

Abstract

The utility model relates to a feeding mechanism and packaging equipment, the feeding mechanism comprises a feeding pipe and a feeding screw shaft, the discharging end of the feeding pipe is provided with a centering piece, the middle of the centering piece is provided with a centering positioning part, and the axis of the centering positioning part coincides with the axis of the feeding pipe; a plurality of discharge ports are formed in the circumferential direction of the centering positioning part; the feeding spiral shaft is inserted into the feeding pipe, the first end of the feeding spiral shaft is provided with an abutting face matched with the centering positioning part, the centering positioning part is in concave-convex fit with the abutting face, the abutting face can rotate relative to the centering positioning part, and the rotating axis of the abutting face coincides with the axis of the feeding spiral shaft. According to the feeding mechanism provided by the invention, the centering positioning part is in concave-convex fit with the abutting surface of the feeding screw shaft, so that the feeding screw shaft and the centering piece are prevented from being separated, certain relative swinging between the feeding screw shaft and the centering piece can be allowed, and the situation that the centering piece is damaged or the feeding screw shaft is clamped due to rigid connection between the feeding screw shaft and the centering piece is avoided; and the failure rate of the feeding mechanism can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of material conveying, and in particular to a feeding mechanism and packaging equipment. Background Art

[0002] When feeding through a screw conveying mechanism, in order to ensure the normal rotation of the feeding screw shaft inside the feeding tube and to make the gap between the feeding screw blades and the inner wall of the feeding tube uniform, it is necessary to ensure the concentricity between the feeding screw shaft and the feeding tube, that is, the concentricity of both ends of the feeding screw shaft must be ensured.

[0003] In the prior art, in order to ensure the concentricity between the feeding screw shaft and the feeding tube, a bearing is usually set at the discharge end of the feeding tube, and the two ends of the feeding screw shaft are ensured to be concentric by the coupling of the driving motor and the bearing on the feeding tube, so that the feeding screw shaft is in a central state (i.e., close to the rotation center line). However, this arrangement has the following disadvantages: on the one hand, due to a certain assembly error between the bearing and the feeding tube, and a certain degree of swing of the feeding screw shaft during the rotation process, this leads to a certain offset angle between the axis of the feeding screw shaft and the axis of the bearing during the rotation of the feeding screw shaft, which causes the feeding screw shaft to vibrate and impact the bearing, which will cause the bearing to be damaged in the long run. On the other hand, during the feeding process, the material can easily enter the raceway inside the bearing, which can easily cause the bearing to get stuck. In severe cases, it may even affect the rotation of the feeding screw shaft inside the feeding tube, resulting in a high failure rate and affecting normal feeding. Utility Model Content

[0004] The present application provides a feeding mechanism and packaging equipment to solve the technical problem that when a bearing is used in a feeding mechanism in the prior art to ensure the concentricity of a feeding screw shaft, there is a high failure rate and it is easy to affect normal feeding.

[0005] In a first aspect, the present application provides a feeding mechanism, comprising:

[0006] A feeding pipe, wherein a centering piece is provided at the discharge end of the feeding pipe, a centering piece is provided at the middle of the centering piece, and the axis of the centering piece coincides with the axis of the feeding pipe; and a plurality of discharge ports are provided along the circumference of the centering piece;

[0007] A feeding screw shaft is inserted into the interior of the feeding tube, and the first end of the feeding screw shaft has an abutment surface matching the central positioning portion, the central positioning portion and the abutment surface are concave-convex matched, and the abutment surface can rotate relative to the central positioning portion, and the rotation axis of the abutment surface coincides with the axis of the feeding screw shaft.

[0008] Optionally, the central positioning portion includes a first spherical surface; the abutting surface includes a second spherical surface, and the first spherical surface and the second spherical surface are matched with each other;

[0009] Alternatively, the central positioning portion includes a first conical surface; the abutting surface includes a second conical surface, and the first conical surface and the second conical surface are matched with each other.

[0010] Optionally, the centering piece includes a plurality of connecting parts arranged in sequence along the circumference of the centering positioning part, one end of the connecting part away from the centering positioning part is connected to the feeding pipe, and a discharge port is formed between two adjacent connecting parts.

[0011] Optionally, an abutment piece is provided at one end of the feeding screw shaft close to the central positioning portion, the abutment piece is made of a wear-resistant material, and at least a portion of the abutment piece is configured as an abutment surface.

[0012] Optionally, along the feeding direction of the feeding screw shaft, a first blade segment, a second blade segment and a third blade segment are sequentially arranged on the feeding screw shaft;

[0013] The diameter of the first blade segment gradually decreases along the material conveying direction, and the blade spacing of the third blade segment gradually decreases along the material conveying direction.

[0014] Optionally, the feeding mechanism further comprises a stirring chamber and a stirring assembly, wherein the stirring assembly is movably arranged inside the stirring chamber, the second end of the feeding screw shaft extends into the stirring chamber, and the stirring chamber has a conical chamber body portion matching the first blade segment;

[0015] The bottom end of the conical bin body is connected to the feeding pipe, and the second blade segment and the third blade segment are sequentially arranged in the feeding pipe.

[0016] Optionally, the discharge end of the feeding tube has a movably arranged stop gate.

[0017] In a second aspect, the present application provides a packaging device, including the feeding mechanism provided in the first aspect of the present application, and also including a bag clamping mechanism and a weighing mechanism, the bag clamping mechanism is arranged outside the discharge end, and the weighing mechanism is movably arranged at the bottom of the discharge end.

[0018] Optionally, the packaging equipment also includes a chassis, the weighing mechanism includes a weighing platform and a lifting drive assembly, the weighing platform is connected to a sliding part of the lifting drive assembly, the lifting drive assembly is arranged inside the chassis, and the chassis has an inflation port.

[0019] Optionally, the packaging equipment further comprises a dust removal mechanism, which is arranged at the discharge end of the feeding pipe.

[0020] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0021] The feeding mechanism provided by the embodiment of the present application makes the abutting surface of the central positioning part and the feeding screw shaft match concave-convex, and the abutting surface can rotate relative to the central positioning part. Since the axis of the central positioning part coincides with the axis of the feeding tube, and the rotation axis of the abutting surface coincides with the axis of the feeding screw shaft, when the abutting surface of the feeding screw shaft and the central positioning part of the central part match concave-convex, it can prevent the end of the feeding screw shaft from coming off the central positioning part during rotation, so that the feeding screw shaft always keeps contact with the central positioning part, so that the rotation axis of the feeding screw shaft and the axis of the feeding tube remain basically concentric, and the concentricity of the two ends of the feeding screw shaft can be guaranteed. Since the abutting surface between the central positioning part and the feeding screw shaft is a contact setting rather than a fixed setting, a certain degree of deflection can be allowed between the feeding screw shaft and the feeding tube, which is conducive to increasing the flexibility of the matching between the feeding screw shaft and the feeding tube, and can reduce the failure rate of the feeding mechanism and achieve normal feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0024] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0025] Figure 1 A schematic diagram of the structure of the packaging equipment provided in the embodiment of the present application;

[0026] Figure 2 A front view of a packaging device provided for an embodiment of the application;

[0027] Figure 3 The embodiment of the present application provides Figure 2 Sectional view of AA in the middle;

[0028] Figure 4 Provided in the embodiments of this application Figure 3 A magnified view of the details of part B;

[0029] Figure 5 A schematic diagram of the structure of the centering component provided in an embodiment of the present application;

[0030] Figure 6 A top view of the centering member provided in an embodiment of the present application;

[0031] Figure 7 A schematic diagram of the structure of the feeding screw shaft provided in the embodiment of the present application;

[0032] Figure 8 A partial cross-sectional view of a packaging device provided in an embodiment of the present application;

[0033] Fig. 9 A schematic diagram of the connection between the feeding mechanism and the bag clamping mechanism provided in the embodiment of the present application;

[0034] Fig.10 A schematic diagram of the partial structure of the packaging equipment provided in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Feeding pipe; 110. Centering piece; 111. Centering positioning part; 112. Connecting part; 120. Stop door; 130. Pipe body; 140. Tie rod assembly; 150. Quick release clamp;

[0037] 2. Feeding screw shaft; 210. Abutment member; 211. Abutment surface; 220. First blade segment; 230. Second blade segment; 240. Third blade segment; 250. Rotating shaft body; 260. Connecting end;

[0038] 3. stirring chamber; 310. conical chamber body; 320. filtering assembly;

[0039] 4. Stirring components;

[0040] 5. Bag clamping mechanism; 510. Bag clamping assembly; 520. Clamping drive member; 530. Bag cover; 540. Switch assembly;

[0041] 6. Weighing mechanism; 610. Weighing platform; 620. Lifting drive assembly; 630. Connecting frame; 640. Organ cover assembly;

[0042] 7. Chassis; 710. Inflatable port;

[0043] 8. Dust removal mechanism; 810. Dust removal cover; 820. Dust suction pipe;

[0044] 9. Feeding drive mechanism;

[0045] 10. stirring drive mechanism; 1010. transmission assembly;

[0046] 11. Operation panel. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0048] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0049] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0050] In order to solve the technical problem that the feeding mechanism in the prior art uses bearings to ensure the concentricity of the feeding screw shaft 2, but there is a high failure rate and it is easy to affect normal feeding. The present application provides a feeding mechanism and packaging equipment, which can realize the dynamic adjustment of the centering state of the feeding screw shaft 2. Through the concave-convex matching of the centering positioning part 111 and the abutting surface 211 of the feeding screw shaft 2, the feeding screw shaft 2 and the centering piece 110 are prevented from disengaging, and a certain relative swing between the feeding screw shaft 2 and the centering positioning part 111 can be allowed, so as to avoid damage to the centering piece 110 or jamming of the feeding screw shaft 2 due to the rigid connection between the two, which is conducive to reducing the failure rate of the feeding mechanism and ensuring the normal operation of the feeding mechanism.

[0051] See also Figures 1 to 10 In a first aspect, an embodiment of the present application provides a feeding mechanism, including a feeding tube 1 and a feeding screw shaft 2. A centering piece 110 is provided at the discharge end of the feeding tube 1. The centering piece 110 has a centering positioning portion 111 in the middle, which is used to center the end of the feeding screw shaft 2. The axis of the centering positioning portion 111 coincides with the axis of the feeding tube 1; a plurality of discharge ports are provided along the circumference of the centering positioning portion 111 to avoid the centering piece 110 affecting the discharge of the feeding tube 1, such as Figure 3 , Figure 4 , Figure 5 and Figure 6 shown.

[0052] The feeding screw shaft 2 is inserted into the feeding tube 1. The feeding screw shaft 2 rotates inside the feeding tube 1 to transport the material from the feeding end of the feeding tube 1 to the discharging end of the feeding tube 1. Figure 3 and Figure 4 The first end of the feeding screw shaft 2 has an abutting surface 211 that matches the center positioning portion 111. The center positioning portion 111 and the abutting surface 211 are concave-convex matched, and the abutting surface 211 can rotate relative to the center positioning portion 111, and the rotation axis of the abutting surface 211 coincides with the axis of the feeding screw shaft 2. When the abutting surface 211 of the feeding screw shaft 2 and the center positioning portion 111 of the centering member 110 are concave-convex matched, the end of the feeding screw shaft 2 can be prevented from escaping from the center positioning portion 111, so that the feeding screw shaft 2 always keeps in contact with the center positioning portion 111, so that the rotation axis of the feeding screw shaft 2 and the axis of the feeding tube 1 remain basically concentric, and the concentricity of the two ends of the feeding screw shaft 2 can be guaranteed. Since the central positioning portion 111 and the abutting surface 211 of the feeding screw shaft 2 are in contact rather than fixed, a certain degree of deflection can be allowed between the feeding screw shaft 2 and the feeding tube 1, which is beneficial to increase the flexibility of the matching between the feeding screw shaft 2 and the feeding tube 1.

[0053] In some embodiments of this application, please refer to Figure 4 and Figure 5 The central positioning portion 111 includes a first spherical surface; the abutting surface 211 includes a second spherical surface, and the first spherical surface is matched with the second spherical surface; one of the first spherical surface and the second spherical surface is an outer convex spherical surface, and the other is an inner concave spherical surface, which can keep the first spherical surface and the second spherical surface concentric during relative rotation under the guiding effect of the spherical surface.

[0054] In some preferred embodiments of the present application, the first spherical surface is preferably an outer convex spherical surface. This is because when the first spherical surface is an inner concave spherical surface, it is easy for materials to accumulate in the center positioning portion 111, which is not convenient for cleaning. When the first spherical surface is an outer convex spherical surface, the second spherical surface is an inner concave spherical surface, and it is not easy for materials to enter the gap between the first spherical surface and the second spherical surface. Even if the materials enter the first spherical surface and the second spherical surface, they will flow out toward the discharge port under the guidance of the second spherical surface.

[0055] In other embodiments of the present application, the centering portion 111 includes a first conical surface; the abutting surface 211 includes a second conical surface, and the first conical surface and the second conical surface are matched. One of the first conical surface and the second conical surface is an outward convex conical surface, and the other is an inward concave conical surface. Under the guidance of the conical surface, the first conical surface and the second conical surface can always remain concentric during the relative rotation.

[0056] Correspondingly, in some preferred embodiments of the present application, the first conical surface is preferably an outwardly convex conical surface, which can also avoid the accumulation of materials in the concave central positioning portion 111.

[0057] In some embodiments of this application, please refer to Figure 5 and Figure 6 The centering piece 110 includes a plurality of connecting parts 112 sequentially arranged along the circumference of the centering positioning part 111. One end of the connecting part 112 away from the centering positioning part 111 is connected to the tube body 130 of the feeding tube 1. A discharge port is formed between two adjacent connecting parts 112, which can avoid the setting of the centering piece 110 from blocking the material.

[0058] In some embodiments of the present application, the centering part 111 is a hemispherical structure, the connecting part 112 is a plate-like structure, and a plurality of connecting plates are radially arranged around the centering part 111, and can form a multi-point fixed connection with the inner wall of the connecting pipe, which is beneficial to improving the connection stability of the centering piece 110 and the supporting capacity of the centering piece 110 for the feeding screw shaft 2.

[0059] In some embodiments of this application, please refer to Figure 4 and Figure 7 An abutment 210 is provided at one end of the feeding screw shaft 2 close to the center positioning portion 111. The abutment 210 is made of wear-resistant material, and at least part of the abutment 210 is configured as an abutment surface 211. Due to the long-term relative rotation and friction between the abutment 210 and the centering member 110, the abutment 210 is made of wear-resistant material, which can improve the service life of the abutment 210.

[0060] In some preferred embodiments of the present application, polytetrafluoroethylene is used to prepare the abutment 210. While improving the service life of the abutment 210, it can also reduce the friction coefficient of the abutment 210 and reduce the relative movement resistance between the abutment 210 and the centering member 110, which is beneficial to ensure the smooth rotation of the feeding screw shaft 2, thereby realizing smooth feeding of the feeding mechanism.

[0061] When the feeding mechanism of the present application is used to convey powder, ultrafine powder and gas-containing powder, if the gas content in the material is large, it will take a long time to reach the preset conveying quality, and it will be inconvenient to control the feeding speed when the material is fluffy. Therefore, it is necessary to further compact the material during the feeding process to reduce the time required for material transportation and improve the feeding accuracy.

[0062] In order to solve the above problems, in some embodiments of the present application, please refer to Figure 3 , Figure 7 and Figure 8 Along the feeding direction of the feeding screw shaft 2, the first blade segment 220, the second blade segment 230 and the third blade segment 240 are sequentially arranged on the feeding screw shaft 2 for conveying the material section by section.

[0063] Among them, the diameter of the first blade segment 220 gradually decreases along the conveying direction, which can preliminarily squeeze the air in the material and then transport it through the second blade segment 230. The blade spacing of the third blade segment 240 gradually decreases along the conveying direction, and the pitch of the third blade segment 240 can be changed, so as to achieve a gradual reduction in the conveying space, thereby squeezing the material moved into the conveying space, and further squeezing the air in the material.

[0064] Specifically, the conveying direction of the feeding screw shaft 2 is Figure 3 From top to bottom, during the rotation of the feeding screw shaft 2, the material moves from top to bottom, and is squeezed and exhausted by the first blade segment 220 and the third blade segment 240, thereby improving the compactness of the material output from the discharge port, which is beneficial to reducing the conveying time to reach the preset quality, and is also convenient for controlling the material conveying speed, thereby improving the feeding accuracy.

[0065] In some embodiments of the present application, the feeding screw shaft 2 also includes a rotating shaft body 250 and a connecting end 260, and the abutment 210, the third blade segment 240, the second blade segment 230 and the third blade segment 240 are sequentially arranged on the rotating shaft body 250. Among them, the first blade segment 220 is a variable diameter blade segment, the second blade segment 230 is an equal diameter and equal distance blade segment, and the third blade segment 240 is an equal diameter and variable distance blade segment, which can realize material conveying and compaction. The rotating shaft body 250 has a connecting end 260 at one end away from the abutment 210, and the connecting end 260 is used to connect with the coupling of the feeding drive mechanism 9, and the feeding screw shaft 2 is driven by the feeding drive mechanism 9 to rotate inside the mixing bin 3 and the feeding pipe 1 as a whole.

[0066] In some embodiments of this application, please refer to Figure 3 The feeding mechanism also includes a stirring chamber 3 and a stirring assembly 4. The stirring assembly 4 is movably arranged inside the stirring chamber 3 and includes one or more stirring blades, which can stir the material inside the stirring chamber 3 to prevent the material from arching. The second end of the feeding screw shaft 2 extends into the stirring chamber 3. The stirring chamber 3 has a conical chamber body 310 that matches the first blade segment 220. When the first blade segment 220 rotates in the conical chamber body 310, the material will be initially squeezed and spirally transported between the first blade segment 220 and the inner wall of the conical chamber body 310, which can prevent the material from accumulating inside the stirring chamber 3.

[0067] In some embodiments of this application, please refer to Figure 3 The stirring assembly 4 is connected to the stirring drive mechanism 10 through the transmission assembly 1010, so that the stirring assembly 4 can move inside the stirring chamber 3. The stirring assembly 4 moves above the first blade segment 220 and does not interfere with the rotation of the first blade segment 220. The transmission assembly 1010 can be a chain sprocket assembly or a pulley assembly, etc., which can achieve the purpose of the present application.

[0068] In some embodiments of this application, please refer to Figure 2 The mixing bin 3 is also provided with a filter assembly 320, which can be used to filter the dust material in the mixing process, and can be used to filter the dust in the escaped gas when the mixing bin 3 is fed. In addition, the mixing bin 3 is also provided with a level meter, which is convenient for monitoring the height of the material in the mixing bin 3. When the material in the mixing bin 3 reaches a certain height, the level meter gives a signal to stop feeding.

[0069] See also Figure 8 and Fig. 9 The bottom end of the conical silo body 310 is connected to the top end of the feeding pipe 1 , and the second blade segment 230 and the third blade segment 240 are sequentially arranged in the feeding pipe 1 to realize spiral conveying of the material inside the tube body 130 of the feeding pipe 1 .

[0070] In some embodiments of the present application, the conical bin body 310 and the feeding tube 1 are detachably connected via a quick-release clamp 150, so that the feeding tube 1 can be quickly disassembled and repaired. The conical bin body 310 can be disassembled to facilitate cleaning of the residual material on the inner wall.

[0071] In some embodiments of this application, please refer to Figure 2 , Figure 3 , Figure 8 and Fig. 9 The discharge end of the feeding tube 1 has a movably arranged stop gate 120, which can open and close the discharge tube of the feeding tube 1, so as to realize the on-off control of the material, thereby realizing quantitative feeding.

[0072] It should be noted that the movement of the stop gate 120 relative to the feeding tube 1 can be achieved manually or by a driving component connected to the stop gate 120 .

[0073] In order to improve the degree of automation of the feeding mechanism, in some embodiments of the present application, the feeding mechanism further includes a pull rod assembly 140, and the stop door 120 is hingedly arranged at the discharge end of the feeding tube 1. The pull rod assembly 140 is hingedly connected to the stop door 120, and the opening and closing of the stop door 120 can be realized by cylinder drive and connecting rod drive, such as Fig. 9 shown.

[0074] When packaging powder materials (hereinafter referred to as powder materials), since powder materials are becoming finer and finer, and the existing packaging environment is poor, powder materials with high precision requirements are mostly packaged manually or by packaging machines. Although the existing packaging machines can automatically fill materials into packaging bags, the packaging bags are not fully filled during the filling process due to the fluffy materials, and the filling speed cannot be well controlled, resulting in low reliability and precision of packaging.

[0075] To solve the above problems, see Figures 1 to 10 The second aspect of the embodiment of the present application provides a packaging device, including the feeding mechanism in the above embodiment, and also including a bag clamping mechanism 5 and a weighing mechanism 6. The bag clamping mechanism 5 is arranged outside the discharge end and can be used to clamp and fix the packaging bag receiving the material. The weighing mechanism 6 is movably arranged at the bottom of the discharge end and can be used to support and weigh the packaging bag, so as to facilitate quantitative feeding and quantitative packaging.

[0076] It should be noted that the feeding mechanism of the present application is applied to packaging equipment. The feeding mechanism can reduce the air content of the material and the fluffiness of the material, which is beneficial to control the filling speed and improve the reliability and accuracy of packaging.

[0077] In some embodiments of this application, please refer to Figure 2 , Fig. 9 and Fig.10 The bag clamping mechanism 5 includes a bag clamping assembly 510, a clamping driving member 520, a bagging portion 530 and a switch assembly 540, wherein the bagging portion 530 is a cylindrical structure arranged outside the feeding tube 1, which is convenient for the upper open-mouth bag body of the packaging bag to be mounted on the bagging portion 530, the bag clamping assembly 510 is movably arranged outside the bagging portion 530, and the top of the packaging bag can be clamped and fixed outside the bagging portion 530, and the clamping driving member 520 is connected to the bag clamping assembly 510, and is used to drive the bag clamping assembly 510 to move relative to the bagging portion 530 to achieve clamping and releasing of the packaging bag. The switch assembly 540 is connected to the clamping driving member 520 by signal, and the operator can achieve clamping or releasing of the packaging bag by operating the switch assembly 540.

[0078] Specifically, the clamping drive member 520 may be a cylinder or a hydraulic cylinder, etc., both of which can achieve the purpose of the present application.

[0079] In some embodiments of the present application, the weighing mechanism 6 is movably arranged at the bottom of the discharge end, so that there is a preset distance between the discharge end and the bottom of the packaging bag or the top surface of the material in the packaging bag, so that the falling height of the material can be maintained at an appropriate height, avoiding the splashing of material and the raising of a large amount of dust due to the high falling height.

[0080] Specifically, the weighing mechanism 6 includes a weighing platform 610 slidably disposed below the discharge end, and a weighing sensor is provided on the weighing platform 610, and the weighing sensor is connected to the signal of the feeding mechanism. In the initial state, the distance between the weighing platform 610 rising to the bottom of the packaging bag (i.e., the surface of the weighing platform 610) and the discharge end is 100-120 mm. This is because the range of motion of the stop gate 120 in the vertical direction is about 80 mm. If the initial distance between the weighing platform 610 and the discharge port is less than 100 mm, it will affect the normal opening and closing of the stop gate 120. When the distance between the weighing platform 610 and the discharge end is greater than 120 mm, the material drop height will be higher, and when the material falls to the bottom of the packaging bag, it is easy to cause splashing, dust, etc.

[0081] During the process of feeding the material into the packaging bag by the feeding mechanism, the weighing platform 610 keeps descending at a constant speed, so that the distance between the top surface of the material in the packaging bag and the discharge end is always maintained at 100-120mm, until the mass detected by the weighing sensor is consistent with the preset mass, the feeding is stopped, and the stop door 120 is closed. The weighing platform 610 continues to descend to the transfer height, the bag clamping mechanism 5 releases the packaging bag, and the operator can remove the packaging bag from the weighing platform 610 and seal the packaging bag.

[0082] In some embodiments of this application, please refer to Fig.10 A plurality of conveying rollers are provided on the weighing platform 610 to facilitate the transfer of the packaging bags containing materials and reduce the labor intensity of the operators.

[0083] In some embodiments of this application, please refer to Figure 1 , Figure 2 and Figure 3 The packaging device also includes a chassis 7, and the interior of the chassis 7 can be used to set the electronic components, driving components, etc. of the packaging device. The components set inside the chassis 7 can be protected to prevent the dust generated during the feeding process from having an adverse effect on the operation of precision components such as electronic components and driving components.

[0084] In some embodiments of the present application, the weighing mechanism 6 includes a weighing platform 610 and a lifting drive assembly 620. The weighing platform 610 is connected to the sliding part of the lifting drive assembly 620. The lifting drive assembly 620 is arranged inside the chassis 7, and the lifting drive assembly 620 can be protected by the chassis 7. The chassis 7 has an inflation port 710, and the interior of the chassis 7 can be inflated by an external air source, so that the interior of the chassis 7 is always in a positive pressure state, forming resistance to dust entering the interior of the chassis 7, and preventing dust from entering the interior of the chassis 7 and corroding precision components such as the lifting drive assembly 620.

[0085] In some embodiments of the present application, the lifting drive assembly 620 includes a servo motor and a ball screw, which can achieve high-precision control of the lifting and lowering of the weighing platform 610. The servo motor and the ball screw are arranged inside the chassis 7, which can prevent dust from adhering to components such as the ball screw and affecting the lifting and lowering control of the weighing platform 610.

[0086] In some embodiments of the present application, the weighing mechanism 6 further includes a connecting frame 630 and an accordion cover assembly 640. A vertical slide groove is provided on the box body of the chassis 7. The accordion cover assembly 640 can be used to shield the vertical slide groove to prevent dust from entering the inside of the chassis 7 through the vertical slide groove. The connecting frame 630 is respectively connected to the sliding member of the lifting drive assembly 620 and the weighing platform 610. When the sliding member slides in the vertical slide groove, the connecting frame 630 and the weighing platform 610 can be driven to achieve overall lifting. The inside of the chassis 7 is provided with a slide rail that can be used to slide and guide the sliding member, which can improve the sliding stability of the connecting frame 630 and the weighing platform 610.

[0087] In some embodiments of this application, please refer to Figure 1 , Figure 8 and Fig.10 The packaging equipment also includes a dust removal mechanism 8, which is arranged at the discharge end of the feeding pipe 1 and is used to suck the dust escaping from the bag mouth of the packaging bag to prevent dust from overflowing during the filling process of the packaging bag.

[0088] In some embodiments of this application, please refer to Fig.10The dust removal mechanism 8 includes a dust cover 810 arranged above the bag clamping mechanism 5. When the clamping assembly fixes the packaging bag on the periphery of the bagging part 530, the material dust can only overflow from the gap between the outer wall of the feeding tube 1 and the inner wall of the bagging part 530. The dust cover 810 is sleeved on the outside of the feeding tube 1. A flexible rubber can be set between the dust cover 810 and the outer wall of the feeding tube 1 for sealing, which can further enclose the dust overflowing from the outer wall of the feeding tube 1. The dust cover 810 is also provided with a dust suction pipe 820, which can suck the dust collected by the dust cover 810, and can suck and collect the dust escaping from the bag mouth.

[0089] It should be noted that the dust removal mechanism 8 does not need to be connected to the sensor, and its location will not affect the normal operation of the bag clamping mechanism 5 and the weighing mechanism 6 below.

[0090] In some embodiments of this application, please refer to Figure 1 and Figure 2 The packaging equipment also includes an operation panel 11, which is connected to the chassis 7 through a mechanical arm, so that the position of the operation panel 11 can be adjusted. The operation panel 11 can be used to realize human-computer interaction between the operator and the packaging equipment, so as to realize intelligent feeding and packaging.

[0091] See also Figures 1 to 10 In some embodiments of the present application, the method of using the above packaging device is as follows:

[0092] Step 1: Input the preset mass and the initial height of the weighing platform 610 on the operation panel 11 , place the packaging bag on the weighing platform 610 , and fix the packaging bag under the feeding tube 1 through the bag clamping mechanism 5 .

[0093] Step 2: Feeding into the mixing bin 3. During the feeding process, the material is stirred by the stirring component 4. When the material level in the mixing bin 3 reaches a preset height, the feeding is stopped.

[0094] Step three: open the stop door 120, and the feeding screw shaft 2 rotates. During the rotation, the top end of the feeding screw shaft 2 is connected to the feeding drive mechanism 9, and the bottom end of the feeding screw shaft 2 is matched with the center positioning part 111 of the centering part 110 through the abutment surface 211, so that the upper and lower ends of the feeding screw shaft 2 are concentric.

[0095] Step 4: The material is conveyed and exhausted through the first blade segment 220, the second blade segment 230 and the third blade segment 240 to reduce the gas content of the material and improve the compactness of the material output from the discharge end.

[0096] Step 5: During the feeding process, the lifting drive assembly 620 descends at a constant speed so that there is a suitable drop height between the discharge end and the top surface of the material in the packaging bag. During the feeding process, the dust escaping from the bag mouth is sucked by the dust removal mechanism 8.

[0097] Step 6: When the weighing sensor on the weighing platform 610 detects that the material in the packaging bag reaches the preset weight, the stop door 120 is closed to stop feeding. The weighing platform 610 continues to descend to the transfer height, and the bag clamping mechanism 5 releases the packaging bag to facilitate the sealing operation of the packaging bag.

[0098] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0099] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0100] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A feeding mechanism, characterized in that: include: A feeding tube (1), wherein a centering piece (110) is provided at the discharge end of the feeding tube (1), wherein the centering piece (110) has a centering positioning portion (111) in the middle, and the axis of the centering positioning portion (111) coincides with the axis of the feeding tube (1); A plurality of discharge ports are provided along the circumference of the central positioning portion (111); A feeding screw shaft (2), the feeding screw shaft (2) is inserted into the inside of the feeding tube (1), the first end of the feeding screw shaft (2) has a contact surface (211) matching the central positioning portion (111), the central positioning portion (111) and the contact surface (211) are concave-convex matched, and the contact surface (211) can rotate relative to the central positioning portion (111), and the rotation axis of the contact surface (211) coincides with the axis of the feeding screw shaft (2).

2. The feeding mechanism according to claim 1, characterized in that: The central positioning portion (111) includes a first spherical surface; the abutting surface (211) includes a second spherical surface, and the first spherical surface and the second spherical surface are arranged to match each other; Alternatively, the central positioning portion (111) includes a first conical surface; the abutting surface (211) includes a second conical surface, and the first conical surface and the second conical surface are arranged to match each other.

3. The feeding mechanism according to claim 1, characterized in that: The centering member (110) comprises a plurality of connecting portions (112) arranged in sequence along the circumference of the centering positioning portion (111), one end of the connecting portion (112) away from the centering positioning portion (111) is connected to the feeding pipe (1), and the discharge port is formed between two adjacent connecting portions (112).

4. The feeding mechanism according to claim 1, characterized in that: An abutment member (210) is provided at one end of the feeding screw shaft (2) close to the central positioning portion (111); the abutment member (210) is made of a wear-resistant material, and at least a portion of the abutment member (210) is configured as the abutment surface (211).

5. The feeding mechanism according to any one of claims 1 to 4, characterized in that: Along the feeding direction of the feeding screw shaft (2), a first blade segment (220), a second blade segment (230) and a third blade segment (240) are sequentially arranged on the feeding screw shaft (2); The diameter of the first blade segment (220) gradually decreases along the material conveying direction, and the blade spacing of the third blade segment (240) gradually decreases along the material conveying direction.

6. The feeding mechanism according to claim 5, characterized in that: The feeding mechanism further comprises a stirring chamber (3) and a stirring assembly (4), wherein the stirring assembly (4) is movably arranged inside the stirring chamber (3), the second end of the feeding screw shaft (2) extends into the stirring chamber (3), and the stirring chamber (3) has a conical chamber body (310) matching the first blade segment (220); The bottom end of the conical bin body (310) is connected to the feeding pipe (1), and the second blade segment (230) and the third blade segment (240) are sequentially arranged in the feeding pipe (1).

7. The feeding mechanism according to claim 5, characterized in that: The discharge end of the feeding tube (1) is provided with a movably arranged stop gate (120).

8. A packaging device, comprising a feeding mechanism according to any one of claims 1 to 7, characterized in that: It also comprises a bag clamping mechanism (5) and a weighing mechanism (6), wherein the bag clamping mechanism (5) is arranged outside the material discharging end, and the weighing mechanism (6) is movably arranged at the bottom of the material discharging end.

9. The packaging device according to claim 8, characterized in that: The packaging equipment also includes a chassis (7), the weighing mechanism (6) includes a weighing platform (610) and a lifting drive assembly (620), the weighing platform (610) is connected to a sliding part of the lifting drive assembly (620), the lifting drive assembly (620) is arranged inside the chassis (7), and the chassis (7) has an inflation port (710).

10. The packaging device according to claim 8 or 9, characterized in that: The packaging equipment further comprises a dust removal mechanism (8), and the dust removal mechanism (8) is arranged at the discharge end of the feeding pipe (1).

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