A dosing mechanism for a filling machine

Abstract

The utility model discloses a kind of ration filling mechanism of filling machine, including bunker, the lower end of the bunker is fixedly connected with discharge pipe, discharge pipe below is fixedly connected with inlet pipe by connecting pipe, inlet pipe is fixedly connected with the measuring cylinder away from connecting pipe one end, first valve is provided on inlet pipe, the lower end of the measuring cylinder is fixedly connected with filling pipe, second valve is provided on filling pipe, under the action of the first electric telescopic rod being set, by first electric telescopic rod first piston is pushed to strongly extrude feed in bunker, it is helpful to the liquid filling of higher consistency in measuring cylinder, simultaneously under the action of annular heating pipe to bunker, it is helpful to improve the liquidity of internal liquid, so that liquid is more easily discharged, further, by first motor, first shaft, first meshing gear set and first transmission shaft drive stirring shaft rotation, by stirring shaft drive helical blade to liquid angle, it is helpful to heat evenly, improve liquidity.

Description

Technical Field

[0001] This utility model relates to the field of quantitative filling technology, specifically to a quantitative filling mechanism for a filling machine. Background Technology

[0002] In the food, beverage, pharmaceutical, and cosmetic industries, filling machines are one of the core production equipment. The accuracy, efficiency, and hygiene performance of their quantitative filling mechanisms directly affect product quality and production costs. Traditional silos rely on gravity or simple air pressure for material supply. For liquids with high viscosity, the flowability is poor. During filling, the pressure of the material entering the metering cylinder may be unstable (especially when the liquid level changes), affecting the suction speed and metering accuracy. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems mentioned above and those existing in the quantitative filling mechanism of the filling machine, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a quantitative filling mechanism for a filling machine. Under the action of the first electric telescopic rod, the first piston is pushed by the first electric telescopic rod to forcefully squeeze and feed the material into the hopper, which helps to fill the liquid with high viscosity into the metering cylinder. At the same time, the hopper is heated under the action of the annular heating tube, which helps to improve the fluidity of the liquid inside, making the liquid easier to discharge.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A quantitative filling mechanism for a filling machine includes a hopper, a discharge pipe fixedly connected to the lower end of the hopper, an inlet pipe fixedly connected below the discharge pipe via a connecting pipe, an end of the inlet pipe away from the connecting pipe being fixedly connected to a metering cylinder, a first valve being provided on the inlet pipe, a filling pipe fixedly connected to the lower end of the metering cylinder, a second valve being provided on the filling pipe, and a material transfer rack being provided below the filling pipe. The hopper includes a first electric telescopic rod, which is fixedly installed through the upper end of the hopper. A first piston is fixedly connected to the lower telescopic end of the first electric telescopic rod. The first piston is located inside the hopper, and a first sealing ring is provided between the first piston and the hopper. A second cavity is opened inside the first piston, and a first drive shaft is rotatably connected through the bottom of the second cavity. A stirring shaft is fixedly connected to the lower end of the first drive shaft, and a spiral blade is fixedly connected to the outer ring of the stirring shaft. A third cavity is opened near the bottom of the side wall of the hopper, and an annular heating tube is provided inside the third cavity.

[0007] As a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, a through hole is provided at the upper end of the first piston near the right side, the inner wall of the through hole is fixedly connected to the feeding pipe, the upper end of the feeding pipe passes through the guide sleeve, and the guide sleeve is fixedly disposed at the upper end of the hopper.

[0008] As a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, the first piston has a first cavity, which is connected to a through hole. A second electric telescopic rod is fixedly installed on the inner wall of the first cavity, and a sealing plate is fixedly connected to the right end of the second electric telescopic rod. The sealing plate is located below the feeding pipe.

[0009] In a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, the first transmission shaft is connected to the first rotating shaft through a first meshing gear set, the first rotating shaft is connected to the output shaft of the first motor, and the first motor is disposed in the second cavity.

[0010] In a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, the metering cylinder includes a piston rod, which is disposed through the upper part of the metering cylinder. A second piston is fixedly connected to the lower telescopic end of the piston rod. The second piston is disposed inside the metering cylinder, and a second sealing ring is disposed between the inner wall of the metering cylinder and the second piston.

[0011] In a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, a connecting plate frame is fixedly connected to the right side of the piston rod, a fixed plate frame is provided above the connecting plate frame, the fixed plate frame is fixedly installed on the right side of the hopper, and a lead screw is rotatably connected through the upper end of the fixed plate frame.

[0012] In a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, the upper end of the lead screw is connected to the output shaft of the second motor, a connecting plate is passed through the lower part of the lead screw, a support guide rod is fixedly connected to the lower end of the fixed plate, and the connecting plate is passed through the lower part of the support guide rod.

[0013] As a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, the transfer rack includes a second drive shaft, and the top end of the transfer rack is rotatably connected to the second drive shaft, which is connected to the second shaft through a second meshing gear set and a second rotating shaft.

[0014] In a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, the second rotating shaft is connected to the output shaft of the third motor, the third motor is installed in the material transfer frame, and the upper end of the second transmission shaft is fixedly connected to the rotating frame.

[0015] As a preferred embodiment of the quantitative filling mechanism of the filling machine described in this utility model, the upper end of the rotating frame has four placement slots arranged in a circular array, and the placement slots contain filling tanks.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: Under the action of the first electric telescopic rod, the first piston is pushed by the first electric telescopic rod to forcefully squeeze and feed the material into the hopper, which helps to fill the liquid with high viscosity into the metering cylinder. At the same time, the hopper is heated by the annular heating tube, which helps to improve the fluidity of the liquid inside, making the liquid easier to discharge. Furthermore, the stirring shaft is driven to rotate by the first motor, the first rotating shaft, the first meshing gear set and the first transmission shaft. The stirring shaft drives the spiral blades to rotate at an angle to the liquid, which helps to heat evenly and improve fluidity. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the silo of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the first piston of this utility model; Figure 4 This is a schematic diagram of the piston rod and the second piston structure of this utility model; Figure 5 This is a schematic diagram of the structure of the second transmission shaft, the second meshing gear set, the second rotating shaft, and the third motor of this utility model.

[0018] In the diagram: 1. Hopper; 101. First electric telescopic rod; 102. First piston; 103. Through hole; 104. Feeding pipe; 105. Guide sleeve; 106. First cavity; 107. Second electric telescopic rod; 108. Sealing plate; 109. Second cavity; 110. First drive shaft; 111. Stirring shaft; 112. Spiral blade; 113. First meshing gear set; 114. First rotating shaft; 115. First motor; 116. Third cavity; 117. Annular heating tube; 2. Discharge 1. Pipe; 2. Connecting pipe; 3. Feed pipe; 4. Metering cylinder; 501. Piston rod; 502. Second piston; 503. Connecting plate frame; 504. Lead screw; 505. Fixing plate frame; 506. Second motor; 507. Support guide rod; 6. First valve; 7. Filling pipe; 8. Second valve; 9. Transfer frame; 901. Second drive shaft; 902. Second meshing gear set; 903. Second rotating shaft; 904. Third motor; 905. Rotating frame; 906. Placement trough; 907. Filling tank. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] This utility model provides a quantitative filling mechanism for a filling machine. Under the action of a first electric telescopic rod, the first piston is pushed by the first electric telescopic rod to forcefully squeeze and feed the material into the hopper, which helps to fill the liquid with high viscosity into the metering cylinder. At the same time, the hopper is heated by the annular heating tube, which helps to improve the fluidity of the liquid inside, making the liquid easier to discharge.

[0023] Figures 1-5 The diagram shown is an overall structural schematic of one embodiment of the quantitative filling mechanism of a filling machine according to this utility model. Please refer to [link / reference]. Figures 1-5The quantitative filling mechanism of a filling machine according to this embodiment includes a hopper 1. A discharge pipe 2 is fixedly connected to the lower end of the hopper 1. An inlet pipe 4 is fixedly connected to the lower end of the discharge pipe 2 through a connecting pipe 3. The end of the inlet pipe 4 away from the connecting pipe 3 is fixedly connected to a metering cylinder 5. A first valve 6 is provided on the inlet pipe 4. A filling pipe 7 is fixedly connected to the lower end of the metering cylinder 5. A second valve 8 is provided on the filling pipe 7. A material transfer rack 9 is provided below the filling pipe 7. Furthermore, both the upper ends of the hopper 1 and the metering cylinder 5 are equipped with pressure relief valves and check valves. The check valves are mainly used to balance the air pressure in the upper space of the hopper 1 when the material is extruded downwards, and to balance the air pressure in the upper space of the metering cylinder 5 when the material is discharged downwards. Depending on the situation, a filter unit can be connected to the check valve to filter the excessive air intake. The pressure relief valves are mainly used to exhaust the air in the upper space when the first piston 102 moves upwards to replenish the material in the hopper 1, and to exhaust the air in the upper space when the second piston 502 moves upwards to feed the material in the metering cylinder 5.

[0024] The hopper 1 includes a first electric telescopic rod 101, which is fixedly installed through the upper end of the hopper 1. A first piston 102 is fixedly connected to the lower telescopic end of the first electric telescopic rod 101. The first piston 102 is located inside the hopper 1. A first sealing ring is provided between the first piston 102 and the hopper 1. A second cavity 109 is opened inside the first piston 102. A first drive shaft 110 is rotatably connected through the bottom of the second cavity 109. A stirring shaft 111 is fixedly connected to the lower end of the first drive shaft 110. A spiral blade 112 is fixedly connected to the outer ring of the stirring shaft 111. A third cavity 116 is opened near the bottom of the side wall of the hopper 1. An annular heating tube 117 is provided inside the third cavity 116.

[0025] Under the action of the first electric telescopic rod 101, the first piston 102 is pushed by the first electric telescopic rod 101 to forcefully squeeze and feed the material into the hopper 1, which helps to fill the liquid with high viscosity into the metering cylinder 5. At the same time, the hopper 1 is heated by the annular heating tube 117, which helps to improve the fluidity of the liquid inside, making the liquid easier to discharge.

[0026] A through hole 103 is provided at the upper end of the first piston 102 near the right side. The inner wall of the through hole 103 is fixedly connected to the feeding pipe 104. The upper end of the feeding pipe 104 passes through the guide sleeve 105, which is fixedly provided at the upper end of the hopper 1. A first cavity 106 is provided inside the first piston 102. The first cavity 106 is connected to the through hole 103. A second electric telescopic rod 107 is fixedly provided on the inner wall of the first cavity 106. A sealing plate 108 is fixedly connected to the right end of the second electric telescopic rod 107, which is located below the feeding pipe 104.

[0027] The guide sleeve 105 and the hopper 1 are fixedly sealed. A sealing ring is provided between the inner wall of the guide sleeve 105 and the feeding pipe 104 to increase the sealing performance. The feeding pipe 104 is connected to an external feeding device for feeding the hopper 1. After feeding is completed, the sealing plate 108 is pushed by the second electric telescopic rod 107 to seal the bottom of the feeding pipe 104 to prevent the material from entering the feeding pipe 104 when the material is squeezed in the hopper 1. Furthermore, a seal is provided between the sealing plate 108 and the first cavity 106.

[0028] The first drive shaft 110 is connected to the first rotating shaft 114 via the first meshing gear set 113. The first rotating shaft 114 is connected to the output shaft of the first motor 115. The first motor 115 is located inside the second cavity 109.

[0029] The stirring shaft 111 is driven to rotate by the first motor 115, the first rotating shaft 114, the first meshing gear set 113 and the first transmission shaft 110. The stirring shaft 111 drives the spiral blades 112 to rotate at an angle relative to the liquid, which helps to ensure uniform heating and improve fluidity.

[0030] The metering cylinder 5 includes a piston rod 501, which is installed through the top of the metering cylinder 5. A second piston 502 is fixedly connected to the telescopic end of the piston rod 501. The second piston 502 is located inside the metering cylinder 5. A second sealing ring is provided between the inner wall of the metering cylinder 5 and the second piston 502. A connecting plate frame 503 is fixedly connected to the right side of the piston rod 501. A fixing plate frame 505 is installed above the connecting plate frame 503. The fixing plate frame 505 is fixedly located on the right side of the hopper 1. A lead screw 504 is rotatably connected through the upper end of the fixing plate frame 505. The upper end of the lead screw 504 is connected to the output shaft of the second motor 506. The connecting plate frame 503 is installed through the lower end of the lead screw 504. A support guide rod 507 is fixedly connected to the lower end of the fixing plate frame 505. The connecting plate frame 503 is installed through the lower end of the support guide rod 507.

[0031] Under the action of the second motor 506, the lead screw 504 is driven to rotate, causing the connecting plate frame 503 to move and adjust the piston rod 501 on the lead screw 504, thereby adjusting the filling space inside the piston rod 501. The total volume of the metering cylinder = cross-sectional area inside the cylinder × maximum effective stroke of the plunger; the filling amount each time = cross-sectional area inside the cylinder × actual working stroke of the plunger during this filling. The second motor 506 is a servo motor. Furthermore, during the equipment debugging stage, the plunger is manually moved back to the position where the metering cylinder is just full, and the position value fed back by the servo motor encoder or grating ruler at this time is recorded and set as the "suction endpoint". During the production process, each suction process, the control system will command the servo motor to drive the plunger to move precisely to this preset "suction endpoint" position. When the motion control system, such as the PLC, confirms through the "positioning complete" signal or position feedback value of the servo driver that the plunger has reached the target position, it is considered that "the metering cylinder is full", and then a command is issued to close the feed valve if applicable or to start the next filling action.

[0032] The transfer rack 9 includes a second drive shaft 901, which is rotatably connected to the top of the transfer rack 9. The second drive shaft 901 is connected to the second rotating shaft 903 through a second meshing gear set 902. The second rotating shaft 903 is connected to the output shaft of a third motor 904. The third motor 904 is installed inside the transfer rack 9. A rotating frame 905 is fixedly connected to the upper end of the second drive shaft 901. The upper end of the rotating frame 905 has four placement slots 906 arranged in a ring array. A material tank 907 is placed in the placement slots 906.

[0033] Under the action of the third motor 904, the rotating frame 905 is driven to rotate through the second rotating shaft 903, the second meshing gear set 902 and the second transmission shaft 901, so as to continuously supply filling tanks 907 placed on the rotating frame 905 for filling. After filling, the filling tank 907 rotates to the unloading station for unloading, and then rotates to the empty tank loading station for loading, keeping it continuous. Furthermore, the right side of the rotating frame 9 is the unloading station, and the rear side of the rotating frame 9 is the loading station.

[0034] Combination Figures 1-5The quantitative filling mechanism of a filling machine according to this embodiment is used as follows: The material tank 907 is loaded and placed in the corresponding placement slot 906. Under the action of the third motor 904, the rotating frame 905 is rotated via the second rotating shaft 903, the second meshing gear set 902, and the second transmission shaft 901, rotating it to the area below the metering cylinder 5 for filling. An angle encoder is provided for rotation angle detection and control. Under the action of the first electric telescopic rod 101, the first piston 102 is pushed by the first electric telescopic rod 101 to forcefully squeeze and feed material into the hopper 1, which helps to fill the high-viscosity liquid into the metering cylinder 5. At the same time, the hopper 1 is heated by the annular heating pipe 117, which helps to improve the fluidity of the liquid inside, making the liquid easier to dispense. The first motor 904... 15. The first rotating shaft 114, the first meshing gear set 113, and the first transmission shaft 110 drive the stirring shaft 111 to rotate. The stirring shaft 111 drives the spiral blades 112 to adjust the angle of the liquid, which helps to heat evenly and improve fluidity. The first valve 6 is opened and the second valve 8 is closed. The liquid material enters the metering cylinder 5 through the feed pipe 4. Under the action of the second motor 506, the lead screw 504 is driven to rotate, so that the connecting plate frame 503 drives the piston rod 501 to move and adjust on the lead screw 504, thereby adjusting the filling space in the piston rod 501 to suck up material. After the metering cylinder 5 is full, the first valve 6 is closed and the second valve 8 is opened. The sucked liquid material is filled into the filling tank 907 through the filling pipe 7. This device is equipped with a programmable logic controller (PLC) for control and processing.

[0035] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A quantitative filling mechanism for a filling machine, comprising a hopper (1), characterized in that: The lower end of the hopper (1) is fixedly connected to a discharge pipe (2), and the lower end of the discharge pipe (2) is fixedly connected to an inlet pipe (4) via a connecting pipe (3). The end of the inlet pipe (4) away from the connecting pipe (3) is fixedly connected to a metering cylinder (5). A first valve (6) is provided on the inlet pipe (4). A filling pipe (7) is fixedly connected to the lower end of the metering cylinder (5). A second valve (8) is provided on the filling pipe (7). A material transfer rack (9) is provided below the filling pipe (7). The hopper (1) includes a first electric telescopic rod (101). The upper end of the hopper (1) is fixedly provided with the first electric telescopic rod (101). The lower telescopic end of the first electric telescopic rod (101) is fixedly connected with a first piston (102). The first piston (102) is located inside the hopper (1). A first sealing ring is provided between the first piston (102) and the hopper (1). A second cavity (109) is opened inside the first piston (102). A first drive shaft (110) is rotatably connected through the bottom of the second cavity (109). A stirring shaft (111) is fixedly connected to the lower end of the first drive shaft (110). A spiral blade (112) is fixedly connected to the outer ring of the stirring shaft (111). A third cavity (116) is opened near the bottom of the side wall of the hopper (1). An annular heating tube (117) is provided inside the third cavity (116).

2. The quantitative filling mechanism of a filling machine according to claim 1, characterized in that: The first piston (102) has a through hole (103) on its upper end near the right side. The inner wall of the through hole (103) is fixedly connected to the feeding pipe (104). The upper end of the feeding pipe (104) passes through the guide sleeve (105), and the guide sleeve (105) is fixedly installed at the upper end of the hopper (1).

3. The quantitative filling mechanism of a filling machine according to claim 1, characterized in that: The first piston (102) has a first cavity (106) inside, the first cavity (106) is connected to the through hole (103), the inner wall of the first cavity (106) is fixedly provided with a second electric telescopic rod (107), the right end of the second electric telescopic rod (107) is fixedly connected with a sealing plate (108), and the sealing plate (108) is located below the feeding pipe (104).

4. The quantitative filling mechanism of a filling machine according to claim 1, characterized in that: The first drive shaft (110) is connected to the first rotating shaft (114) via the first meshing gear set (113), and the first rotating shaft (114) is connected to the output shaft of the first motor (115). The first motor (115) is located in the second cavity (109).

5. The quantitative filling mechanism of a filling machine according to claim 1, characterized in that: The measuring cylinder (5) includes a piston rod (501). The piston rod (501) is provided through the top of the measuring cylinder (5). A second piston (502) is fixedly connected to the telescopic end of the piston rod (501). The second piston (502) is provided inside the measuring cylinder (5). A second sealing ring is provided between the inner wall of the measuring cylinder (5) and the second piston (502).

6. The quantitative filling mechanism of a filling machine according to claim 5, characterized in that: A connecting plate frame (503) is fixedly connected to the right side of the piston rod (501). A fixing plate frame (505) is provided above the connecting plate frame (503). The fixing plate frame (505) is fixedly provided on the right side of the hopper (1). A lead screw (504) is rotatably connected through the upper end of the fixing plate frame (505).

7. The quantitative filling mechanism of a filling machine according to claim 6, characterized in that: The upper end of the lead screw (504) is connected to the output shaft of the second motor (506), and the lower end of the lead screw (504) is connected to the plate frame (503). The lower end of the fixed plate frame (505) is fixedly connected to the support guide rod (507), and the lower end of the support guide rod (507) is connected to the plate frame (503).

8. The quantitative filling mechanism of a filling machine according to claim 1, characterized in that: The transfer rack (9) includes a second drive shaft (901), and the top end of the transfer rack (9) is rotatably connected to the second drive shaft (901). The second drive shaft (901) is connected to the second meshing gear set (902) and the second rotating shaft (903).

9. The quantitative filling mechanism of a filling machine according to claim 8, characterized in that: The second rotating shaft (903) is connected to the output shaft of the third motor (904). The third motor (904) is installed inside the material transfer frame (9). The upper end of the second transmission shaft (901) is fixedly connected to the rotating frame (905).

10. The quantitative filling mechanism of a filling machine according to claim 9, characterized in that: The upper end of the rotating frame (905) has four placement slots (906) arranged in a circular array, and the placement slots (906) contain material tanks (907).

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