Single-station nitrogen filling mechanism

Abstract

A single-station nitrogen filling and filling mechanism comprises a base, a discharging hopper is arranged on the base, a supporting arm is arranged on the base, a nitrogen filling pipe is arranged on the supporting arm and vertically arranged on the discharging hopper in a penetrating mode, and the bottom of the nitrogen filling pipe extends out of the bottom of the discharging hopper. And a first driving mechanism for driving the nitrogen charging pipe to move up and down is arranged on the support arm. The nitrogen filling pipe and the discharging hopper are arranged on the same station, filling and nitrogen filling operation can be carried out at the same time on the single station, and the overall space occupied by equipment is reduced; nitrogen filling and filling can be carried out at the same station at the same time, the nitrogen filling pipe can stretch into the bottom of a packaging bag to carry out nitrogen filling before material filling, in the material filling and falling process, nitrogen can be filled into gaps between materials, oxygen can be exhausted, the nitrogen filling rate is increased, and the quality guaranteeing effect on the materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machine unloading equipment, in particular to a single-station filling and nitrogen charging mechanism. Background Art

[0002] Currently, bagged foods often need to be filled with nitrogen to prevent food spoilage. The nitrogen filling step is usually carried out after the packaging bag is filled. The specific working principle is: the clamping device clamps the packaging bag and runs it to the filling mechanism for filling. The clamping device then continues to clamp the packaging bag and runs it to the nitrogen filling device. The nitrogen filling tube extends into the packaging bag and fills it with nitrogen. The clamping device (two grippers) then pulls the packaging bag open to both sides, flattening the bag opening to reduce nitrogen leakage. The nitrogen filling tube then rises, and the clamping device continues to clamp the packaging bag and moves it to the subsequent station for sealing.

[0003] The above-mentioned nitrogen filling process still has the following directions for optimization:

[0004] 1. The filling and nitrogen filling devices on the packaging machine are carried out separately, which requires the space of two stations, increasing the overall space occupied by the equipment;

[0005] 2. During the nitrogen filling process, the material first enters the packaging bag and then the nitrogen is filled. During the nitrogen filling process, the nitrogen filling tube cannot be inserted into the bottom of the packaging bag (if the material is puffed food, it is easy to damage the material; if the material is granular, there is greater resistance to the insertion of the nitrogen filling tube). Therefore, during the filling process, the oxygen mixed into the bottom of the packaging bag is difficult to be discharged, the nitrogen filling rate is not high, and the quality preservation effect of the material still needs to be optimized. Summary of the Invention

[0006] The purpose of the present invention is to provide a single-station filling and nitrogen charging mechanism, which solves the problems in the above background by adopting the device to work.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: a single-station filling and nitrogen charging mechanism, comprising a base, a discharge funnel provided on the base, a support arm provided on the base, a nitrogen charging tube provided on the support arm, the nitrogen charging tube vertically passing through the discharge funnel, the bottom of the nitrogen charging tube extending from the bottom of the discharge funnel, and a first driving mechanism for driving the nitrogen charging tube to move up and down provided on the support arm.

[0008] Furthermore, a filling hopper is provided on the base at the bottom of the discharge funnel, the bottom of the nitrogen filling tube extends out from the filling hole at the bottom of the filling hopper, and a second driving mechanism for driving the filling hopper to move up and down is provided on the base.

[0009] Furthermore, the first driving mechanism includes a fixing mechanism for fixing the nitrogen filling tube and a first driving device for driving the fixing mechanism to move up and down.

[0010] Furthermore, the first driving device is a rodless cylinder, a guide block is provided on the slider of the rodless cylinder, a guide rod is provided on the support arm to cooperate with the guide block, an upper connecting valve for communicating with the upper end of the nitrogen filling pipe is provided on the upper side of the guide block, and a lower connecting valve for connecting to the nitrogen filling hose is provided on the lower side of the guide block, and the nitrogen filling hose is spirally wound on the guide rod.

[0011] Furthermore, the support arm can be horizontally swung and is arranged on the base. The base is provided with a locking mechanism for fixing the support arm. The fixing mechanism includes a fixing plate and a splint respectively arranged on both sides of the nitrogen filling tube. The splint is hingedly arranged on the fixing plate, and the splint is fixed to the fixing plate by a first fixing member.

[0012] Furthermore, the locking mechanism includes a fixed seat arranged on the filling hopper and a clamping block hingedly arranged on the fixed seat, a fixing rod is provided on the support arm, the fixing rod is placed between the fixed seat and the clamping block, and the clamping block is fixed to the fixed seat by a second fixing piece.

[0013] Furthermore, a positioning member is provided on the base for positioning the working position and the swing-out position of the support arm.

[0014] Furthermore, the lower portion of the nitrogen filling tube is a flat tube, and the direction of the flat tube is parallel to the direction of the packaging bag opening.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention sets the nitrogen filling pipe and the discharge funnel on the same station, which can perform filling and nitrogen filling operations simultaneously at a single station, reducing the space occupied by the entire equipment;

[0017] 2. Nitrogen charging and filling can be carried out simultaneously at the same workstation. The nitrogen charging tube can be extended into the bottom of the packaging bag for nitrogen filling before filling. During the filling and falling process of the material, nitrogen can also be filled into the gaps between the materials to discharge oxygen, thereby increasing the nitrogen charging rate and improving the quality preservation effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention facing the discharge funnel side;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 It is a three-dimensional schematic diagram of the present invention facing the support arm side;

[0021] Figure 4 is a perspective schematic diagram of the second driving mechanism of the present invention;

[0022] Figure 5is a three-dimensional schematic diagram of the fixing mechanism of the present invention;

[0023] Figure 6 It is a three-dimensional schematic diagram of the support arm of the present invention in an open state;

[0024] Figure 7 It is a three-dimensional schematic diagram of the guide sleeve of the present invention at the position of the discharge funnel. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0027] like Figure 1-7 As shown, the purpose of this embodiment is to provide a single-station filling and nitrogen charging mechanism, including a base 1, a discharge funnel 2 is provided on the base 1, and the upper side of the discharge funnel 2 is a material bin, and the material bin drops into the discharge funnel 2 for discharge, and a support arm 3 is provided on the base 1, and a nitrogen charging pipe 4 is provided on the support arm 3. The nitrogen charging pipe 4 is vertically penetrated and arranged on the discharge funnel 2, wherein a guide sleeve 5 is provided at the penetration point of the nitrogen charging pipe 4 and the discharge funnel 2. In this embodiment, the guide sleeve 5 is fixed to the inside of the discharge funnel 2 by bolts, which can reduce the occupation of the moving stroke of the nitrogen charging pipe 4 and save space in height. The bottom of the nitrogen charging pipe 4 extends from the bottom of the discharge funnel 2. In this embodiment, the nitrogen charging pipe 4 extends downward from the center of the discharge funnel 2, and the support arm 3 is provided with a first driving mechanism that drives the nitrogen charging pipe 4 to move up and down;

[0028] The working process of this embodiment is as follows: after the packaging bag is moved to the bottom of the discharge funnel 2 by the clamping device (two clamping hands, not shown in the figure), the first driving mechanism drives the nitrogen filling tube 4 to move downward, and the bottom of the nitrogen filling tube 4 extends into the bottom of the packaging bag to fill nitrogen. At the same time, the discharge funnel 2 fills the packaging bag with material. The nitrogen filling process continues. After the filling is completed, the two clamping hands flatten the bag opening of the packaging bag (the operation of flattening the bag opening of the packaging bag by the clamping hands is an existing technology in the current nitrogen filling process, and the specific related features are not repeated here) to reduce nitrogen leakage. Then the first driving mechanism drives the nitrogen filling tube 4 to move upward out of the packaging bag, and the clamping hands continue to flatten the packaging bag, and then clamp the packaging bag to the subsequent sealing process;

[0029] like Figure 7 As shown, preferably, the lower part of the nitrogen filling tube 4 is a flat tube 6, and the direction of the flat tube 6 is parallel to the direction of the packaging bag opening. When the clamping hand flattens the packaging bag opening for the first time, the nitrogen filling tube 4 is in the packaging bag. The flat opening of the nitrogen filling tube 4 can increase the flatness of the packaging bag opening, and the gap between the nitrogen filling tube 4 and the packaging bag opening is smaller, which can reduce the amount of air entering when the nitrogen filling tube 4 is pulled out after nitrogen filling, thereby improving the nitrogen filling rate of the packaging bag and further improving the quality preservation effect of the material;

[0030] Preferably, a filling hopper 7 is provided at the bottom of the discharge funnel 2 on the base 1, and the bottom of the nitrogen filling tube 4 extends out from the filling hole at the bottom of the filling hopper 7, and a second driving mechanism 8 is provided on the base 1 to drive the filling hopper 7 to move up and down; after the nitrogen filling tube 4 extends into the packaging bag, the second driving mechanism 8 drives the filling hopper 7 to move downward to the packaging bag for filling; wherein the second driving mechanism 8 includes a cylinder 81, an upper moving seat 82, two guide rails 83, two guide columns 84, a guide seat 85, and a lower moving seat 86, the two guide rails 83 and the guide seat 85 are provided on the base 1, the upper moving seat 82, the two guide columns 84, and the lower moving seat 86 are fixedly connected, the filling hopper 7 is installed on the lower moving seat 86, the upper moving seat 82 cooperates with the two guide rails 83 to slide, and the two guide columns 84 cooperate with the guide seat 85 to slide. The two sets of sliding cooperation can improve the stability of the up and down movement of the filling hopper 7, avoid vibration or deviation, and avoid spilling material outside the packaging bag during the entire filling process;

[0031] Preferably, the first driving mechanism includes a fixing mechanism 9 for fixing the nitrogen filling tube 4 and a first driving device 10 for driving the fixing mechanism 9 to move up and down;

[0032] Preferably, the first driving device 10 is a rodless cylinder, and a guide block 11 is provided on the slider of the rodless cylinder (the guide of the rodless cylinder in this embodiment is a cylinder, and the guide block 11 can prevent the slider from rotating), and a guide rod 12 is provided on the support arm 3 to cooperate with the guide block 11. An upper connecting valve 13 for communicating with the upper end of the nitrogen filling pipe 4 is provided on the upper side of the guide block 11, and a lower connecting valve 15 for connecting to a nitrogen filling hose 14 is provided on the lower side of the guide block 11. The nitrogen filling hose 14 is spirally wound on the guide rod 12; The nitrogen filling pipe 4 needs to be frequently moved up and down for nitrogen filling operation. The upper end of the nitrogen filling pipe 4 is connected to the upper connecting valve 13 through the hose 16. The nitrogen filling pipe 4 and the guide block 11 move synchronously. Therefore, both ends of the above-mentioned hose 16 can move synchronously, which has good stability and avoids flying due to the inertia of frequent up and down movement. In addition, the nitrogen filling hose 14 is spirally wound on the guide rod 12, which can also reduce the activity of the upstream gas supply part of the nitrogen filling hose 14 caused by the up and down movement of the guide block 11, thereby avoiding the nitrogen filling hose 14 from moving around.

[0033] like Figure 6 As shown, preferably, the support arm 3 is horizontally swingable and is set on the base 1, and a locking mechanism for fixing the support arm 3 is provided on the base 1, and the fixing mechanism 9 includes a fixing plate 91 and a clamping plate 92 respectively arranged on both sides of the nitrogen filling tube 4, and the clamping plate 92 is hingedly set on the fixing plate 91, and the clamping plate 92 is fixed to the fixing plate 91 by a first fixing member 93; after a long period of use, materials may accumulate in the discharge funnel 2, and the discharge funnel 2 needs to be removed and cleaned. In the case of a conventional filling and nitrogen filling double-station setting, the discharge funnel 2 can be directly removed, but in this application, the nitrogen filling mechanism will affect the disassembly of the discharge funnel 2. Correspondingly, the above-mentioned features can achieve the following effects to solve the problem: the discharge funnel needs to be disassembled 2, the locking mechanism can be unlocked, and the fixation of the support arm 3 by the base 1 can be cancelled. In addition, the first fixing piece 93 can also unlock the splint 92. After the splint 92 is rotated open, the nitrogen charging tube 4 can be held by hand and the support arm 3 can be rotated open horizontally. In this embodiment, a supporting ring 41 is provided at the matching position of the nitrogen charging tube 4 and the fixing plate 91 and the splint 92. A bracket 94 is provided on the fixing plate 91 to match the supporting ring 41. The supporting ring 41 cooperates with the bracket 94 to prevent the nitrogen charging tube 4 from automatically falling when the splint 92 is opened. After the support arm 3 is rotated open, the nitrogen charging tube 4 is put down, and the supporting ring 41 can be placed on the upper side of the discharge funnel 2. Then the discharge funnel 2 and the nitrogen charging tube 4 can be removed together. In this embodiment, the first fixing piece 93 is a butterfly bolt;

[0034] Preferably, the locking mechanism includes a fixing seat 17 provided on the filling hopper 7 and a clamping block 18 hingedly provided on the fixing seat 17, a fixing rod 19 is provided on the support arm 3, the fixing rod 19 is placed between the fixing seat 17 and the clamping block 18, and the clamping block 18 is fixed to the fixing seat 17 by a second fixing member 20, and the second fixing member 20 is a bolt. A locking handle is provided on the outside of the bolt, and the bolt can be rotated by the locking handle to unlock the connection between the fixing seat 17 and the clamping block 18. When the support arm 3 needs to be swung out, the locking handle is rotated, and then the clamping block 18 is swung out, so that the support arm 3 can be swung out of the fixing seat 17;

[0035] Preferably, a positioning member 21 is provided on the base 1 for positioning the working position and the swinging position of the support arm 3. In this embodiment, the positioning member 21 is two spring pins, and a pin hole is provided on the support arm 3 to cooperate with the spring pins. When the support arm 3 is in the working position, one of the spring pins cooperates with the pin hole, and the other spring pin is provided in the swinging position of the support arm 3. After cooperating with the pin hole, the support arm 3 is fixed to avoid affecting the support arm 3 when the unloading funnel 2 is disassembled.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A single-station filling and nitrogen charging mechanism, characterized by: The invention comprises a base, a feeding funnel is provided on the base, a support arm is provided on the base, a nitrogen filling tube is provided on the support arm, the nitrogen filling tube is vertically penetrated on the feeding funnel, the bottom of the nitrogen filling tube extends from the bottom of the feeding funnel, and a first driving mechanism for driving the nitrogen filling tube to move up and down is provided on the support arm; The lower part of the nitrogen filling tube is a flat tube, and the direction of the flat tube is parallel to the direction of the packaging bag opening.

2. A single-station filling and nitrogen charging mechanism according to claim 1, characterized in that: A filling hopper is provided on the base at the bottom of the discharge funnel, the bottom of the nitrogen filling tube extends out from the filling hole at the bottom of the filling hopper, and a second driving mechanism for driving the filling hopper to move up and down is provided on the base.

3. The single-station filling and nitrogen charging mechanism according to claim 1, characterized in that: The first driving mechanism includes a fixing mechanism for fixing the nitrogen filling tube and a first driving device for driving the fixing mechanism to move up and down.

4. The single-station filling and nitrogen charging mechanism according to claim 2, characterized in that: The first driving device is a rodless cylinder, and a guide block is provided on the slider of the rodless cylinder. A guide rod is provided on the support arm to match the guide block. An upper connecting valve for communicating with the upper end of the nitrogen filling pipe is provided on the upper side of the guide block, and a lower connecting valve for connecting to the nitrogen filling hose is provided on the lower side of the guide block. The nitrogen filling hose is spirally wound on the guide rod.

5. The single-station filling and nitrogen charging mechanism according to claim 2, characterized in that: The support arm can be horizontally swung and is arranged on the base. The base is provided with a locking mechanism for fixing the support arm. The fixing mechanism includes a fixing plate and a clamping plate respectively arranged on both sides of the nitrogen filling tube. The clamping plate is hingedly arranged on the fixing plate, and the clamping plate is fixed to the fixing plate by a first fixing member.

6. The single-station filling and nitrogen charging mechanism according to claim 5, characterized in that: The locking mechanism includes a fixed seat arranged on the filling hopper and a clamping block hingedly arranged on the fixed seat, a fixing rod is provided on the support arm, the fixing rod is placed between the fixed seat and the clamping block, and the clamping block is fixed to the fixed seat by a second fixing piece.

7. The single-station filling and nitrogen charging mechanism according to claim 5, characterized in that: The base is provided with a positioning piece for positioning the working position and the swing-out position of the support arm.

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