An automatic filling machine and filling production line

Abstract

This invention discloses an automatic filling machine and a filling production line. The automatic filling machine includes a filling worktable that rotates around itself, a material hopper positioned above the worktable and moving synchronously with it, and a filling cam portion fixed circumferentially around the material hopper. The material hopper has a top cover, a foam back-suction assembly at the bottom, and multiple filling heads evenly distributed on its outer circumference. The top cover is rotatably sealed to the material hopper and is fixedly connected to a material hopper feeding assembly. The top of each filling head is circumferentially movable with the filling cam portion, and its bottom is located below the material hopper and has a discharge nozzle and a back-suction nozzle respectively connecting the material hopper and the foam back-suction assembly. This invention eliminates the need for a piston lifting structure or reduced liquid filling speed during follow-up filling, reducing foam generation and making it better suited for filling products that are prone to foaming and have high hygiene requirements.

Description

Technical Field

[0001] This invention relates to the field of automatic filling technology, and in particular to an automatic filling machine and filling production line. Background Technology

[0002] Currently, the main types of automatic filling machines on the market are rotary filling and inline filling. For products that are prone to foaming, inline filling is mostly used, employing a piston cylinder for lifting and lowering the filling nozzle simultaneously with filling. However, this structure, due to the use of a piston cylinder, struggles to meet the hygiene requirements of the pharmaceutical industry and is unsuitable for products like feminine wash with high hygiene standards. While rotary filling machines avoid using piston cylinders, products like feminine wash easily generate foam during filling, and traditional rotary filling machines are prone to overflowing, leading to widespread contamination. Therefore, for these foam-prone products with high hygiene requirements, the filling speed must be slowed down to minimize foam generation, severely impacting filling efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing an automatic filling machine and filling production line that does not require reducing the liquid filling speed and can reduce foam generation, making it more suitable for filling products that are prone to foaming and have high hygiene requirements.

[0004] The technical solution to achieve the objective of this invention is:

[0005] An automatic filling machine includes a filling worktable that rotates around itself, a material box located above the filling worktable and moving synchronously with the filling worktable, and a filling cam portion sleeved around the material box and fixedly arranged circumferentially. The top of the material box is provided with a top cover, the bottom is provided with a foam back suction component, and a plurality of filling heads are evenly arranged on the outer circumference. The top cover is rotatably sealed with the material box and is fixedly provided with a material box feeding component. The top of the filling head is circumferentially movable with the filling cam portion, and the bottom is located below the material box and is provided with a discharge nozzle and a back suction nozzle that are respectively connected to the material box and the foam back suction component.

[0006] Furthermore, the material bin includes a first material storage section and a second material storage section adjacent to and lower than the first material storage section. The feeding assembly includes a main feed pipe and a circulating feed pipe connected to the first material storage section, and a circulating outlet pipe connected to the second material storage section. A circulating diaphragm pump is provided between the circulating outlet pipe and the circulating feed pipe. A liquid level detector is provided in the second material storage section, and the liquid level detector is signal-connected to the circulating diaphragm pump.

[0007] Furthermore, the first storage section is provided with a first partition, the top of the first partition is higher than the top of the second storage section, and the bottom is provided with a through hole, forming an adjacent and interconnected first storage space and second storage space. The first storage space is adjacent to the second storage section, the main feed pipe and the circulating feed pipe are both connected to the first storage space, and the discharge nozzle is connected to the second storage space.

[0008] Furthermore, the second storage section is cylindrical, and both the first storage space and the second storage space are annular spaces arranged sequentially from the inside to the outside in the second storage section. Multiple second partitions are evenly distributed circumferentially on the upper part of the second storage space.

[0009] Furthermore, the feeding assembly also includes an annular reflux pipe fixedly disposed at the bottom of the top cover, the bottom of the annular reflux pipe being connected to a discharge pipe extending to the first storage space, and both the main feeding pipe and the circulating feeding pipe being connected to the annular reflux pipe.

[0010] Furthermore, the upper outer circumference of the material box is provided with an annular extension platform, and the filling head includes a guide rod assembly mounted on the annular extension platform. The top of the guide rod assembly is provided with a roller that cooperates with the filling cam part, and the lower end is provided with a filling seat. A filling tube communicating with the material box is detachably fixed on the filling seat. The discharge nozzle is sealed and inserted into the lower end of the filling tube. The back suction nozzle is gap-fitted outside the discharge nozzle, with its upper end fixedly and sealed in contact with the discharge nozzle, and its lower end higher than the lower end of the discharge nozzle and with a back suction port communicating with the foam back suction assembly on its side.

[0011] Furthermore, the foam back-suction assembly includes an annular pipe located below the material box and a back-suction main pipe that seals and penetrates the material box along the rotation axis. The annular pipe is provided with back-suction branch pipes connected to the back-suction nozzles in the circumferential direction. The lower end of the back-suction main pipe is connected to the annular pipe, and the upper end is connected to the material box with a rotary sealing joint. The rotary sealing joint is connected to an external suction device.

[0012] Furthermore, a lead screw lifting mechanism is fixedly connected to the bottom of the filling cam section.

[0013] Furthermore, the upper surface of the filling workbench is vertically provided with multiple screw lifting columns connected to the material box along the circumferential direction, and the lower surface is fixedly equipped with a drive motor. The lower end of the screw lifting column passes through the filling workbench and is coaxially fixedly connected with a driven gear. The motor shaft of the drive motor is coaxially fixedly equipped with a driving gear. The driving gear and the driven gear are located on the same horizontal plane and are connected by chain transmission.

[0014] A filling production line includes an automatic filling machine as described above.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects:

[0016] (1) This invention sets up a filling workbench to place the empty bottles that have been transported, and sets up a material box and filling head that move synchronously to achieve follow-up filling. It also adds a foam back suction component. Combined with a filling head with a special structure, while the filling is carried out by gravity flow through the feeding nozzle, the foam generated is sucked out in time through the back suction nozzle connected to the back suction component. This avoids the use of a piston cylinder, which can not only avoid the generation of foam, but also take into account hygiene requirements. There is no need to reduce the liquid filling speed. It can be better suited for filling products that are prone to foaming and have high hygiene requirements.

[0017] (2) The present invention has a specially structured material box and feeding assembly. The material is transported to the first storage section through the main feeding pipe and overflows from the first storage section to the second storage section at a lower position. The liquid level detector detects the liquid level change and controls the operation of the circulating diaphragm pump. The circulating diaphragm pump then draws the material in the second storage section to the first storage section. Thus, under the adjustment of the feeding speed of the circulating diaphragm pump and the main feeding pipe, the liquid level in the first storage section is always at the highest point, thereby achieving a constant self-flowing filling speed and improving filling accuracy.

[0018] (3) The present invention divides the first storage part into two connected storage spaces by the first partition, so that the material directly enters the first storage space and flows from the through hole at the bottom of the liquid surface to the second storage space, thereby reducing the generation of foam in the liquid surface area flowing to the filling head.

[0019] (4) By setting a second baffle, the present invention reduces the liquid flow in the rotating hopper, further reduces foam generation, and makes the flow rate to the filling head more stable.

[0020] (5) By setting up an annular reflux pipe, the material first flows to the annular reflux pipe for buffering, and then flows to the first storage space, avoiding excessive liquid flow velocity and foam generation. At the same time, it can reduce the impact of the flow velocity of the main feed pipe on gravity filling.

[0021] (6) The present invention uses a back suction nozzle and a discharge nozzle with a sealed upper end and a gap at the lower end to achieve the filling of materials in the middle and the back suction of foam on the outer periphery. Not only is the overall structure compact, but it can also expand the area for back suction of foam and improve the foam back suction effect.

[0022] (7) The foam back suction component of the present invention can both suck up foam and follow rotation by reasonably arranging the pipes, and the overall structure is simple.

[0023] (8) By setting a screw lifting mechanism, the present invention can adjust the initial position of the filling cam part and better match the upper end of the filling head.

[0024] (9) The material box of the present invention is also designed as a liftable structure, which is used in conjunction with the liftable filling cam to meet the filling of bottles of different heights and specifications, and has a wider range of applications. Attached Figure Description

[0025] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a cross-sectional view of the present invention;

[0028] Figure 3 This is a schematic diagram of the filling head of the present invention;

[0029] Figure 4 This is a schematic diagram illustrating the filling principle of the present invention.

[0030] The labels in the attached diagram are:

[0031] 1. Filling workbench; 2. Material bin; 2-1. Top cover; 2-2. First material storage section; 2-3. Second material storage section; 2-4. First partition; 2-4-1. Through hole; 2-5. Second partition; 2-6. Annular extension table; 3. Filling cam section; 4. Foam back suction assembly; 4-1. Annular pipe; 4-2. Back suction main pipe; 4-3. Back suction branch pipe; 5. Filling head; 5-1. Discharge nozzle; 5-2. Back suction nozzle; 5-3. Guide rod assembly; 5-4. Roller; 5-5. Filling seat; 5-6. Filling pipe; 6. Feeding assembly; 6-1. Main feed pipe; 6-2. Circulating feed pipe; 6-3. Circulating outlet pipe; 6-4. Circulating diaphragm pump; 6-5. Annular return pipe; 6-6. Discharge pipe; 7. Screw lifting mechanism; 8. Screw lifting column; 9. Drive motor; 10. Driven gear; 11. Drive gear; 12. Rotary sealing joint. Detailed Implementation

[0032] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0033] (Example 1)

[0034] The filling production line in this embodiment is used for packaging materials with high hygiene requirements and prone to foaming. Since piston-type lifting automatic filling machines cannot be used, a method such as... Figures 1 to 4The self-flowing automatic filling machine shown includes a filling worktable 1, a material hopper 2, a filling cam section 3, a foam back suction assembly 4, a filling head 5, and a feeding assembly 6. The filling worktable 1 has a toothed disc in the center, which rotates around itself under external drive, thereby moving the conveyed empty bottles. The material hopper 2 is located above the filling worktable 1 and moves synchronously with it. A top cover 2-1 is provided on top, which rotates and seals with the material hopper 2, thus keeping it stationary while the material hopper 2 rotates. The filling cam section 3 is circumferentially fixedly sleeved on the outside of the material hopper 2 and remains stationary while the material hopper 2 rotates. The foam back suction assembly 4 is located at the bottom of the material hopper 2, and the feeding assembly 6 is fixedly mounted on the top cover 2-1, connecting to the material hopper 2. The filling head 5 is evenly mounted circumferentially on the material box 2 and moves synchronously with the material box 2. Its top is circumferentially engaged with the filling cam part 3, and its bottom is located below the material box 2 and is equipped with a discharge nozzle 5-1 and a suction nozzle 5-2 that connect the material box 2 and the foam back-suction assembly 4, respectively. While the discharge nozzle 5-1 performs gravity-flow filling, the suction nozzle 5-2 promptly removes any foam generated. This entire filling structure avoids foam generation while also meeting hygiene requirements, without reducing the liquid filling speed. It is better suited for filling products that are prone to foaming and have high hygiene requirements.

[0035] Specifically, a screw lifting mechanism 7 is fixedly connected to the bottom of the filling cam section 3, thereby adjusting the initial position of the filling cam section 3 to better match the upper end of the filling head 5. Multiple screw lifting columns 8 connected to the material box 2 are evenly and vertically arranged along the circumference of the upper surface of the filling worktable 1. A drive motor 9 is fixedly mounted on the lower surface. The lower end of the screw lifting column 8 passes through the filling worktable 1 and is coaxially fixedly connected to a driven gear 10. A drive gear 11 is coaxially fixedly mounted on the motor shaft of the drive motor 9. The drive gear and the driven gear are located on the same horizontal plane and are connected by chain transmission, thereby realizing the synchronous lifting of multiple screw lifting columns, which in turn drives the lifting of the material box 2. Used in conjunction with the liftable filling cam section, it can meet the filling needs of bottles of different heights and specifications, thus broadening its application range.

[0036] The foam back-suction assembly 4 includes an annular pipe 4-1 located below the material box 2 and a back-suction main pipe 4-2 that seals and penetrates the material box 2 along the rotation axis. The annular pipe 4-1 has multiple back-suction branch pipes 4-3 arranged circumferentially, each corresponding to and connected to a back-suction nozzle 5-2. The lower end of the back-suction main pipe 4-2 is connected to the annular pipe 4-1 via a pipe, and the upper end is connected to the material box 2 via a rotary sealing joint 12. The rotary sealing joint 12 is connected to an external suction device via a pipe, thereby sucking away the foam generated during filling through the back-suction nozzle 5-2. The overall foam back-suction assembly 4, through its rational pipe layout, can both suck up foam and rotate synchronously with the material box 2, resulting in a simple structure.

[0037] The material bin 2 includes a first storage section 2-2 and a second storage section 2-3 arranged adjacent to each other. The second storage section 2-3 is a cylindrical structure located at the center of the material bin. The first storage section 2-2 is higher than the second storage section 2-3 and is concentrically arranged outside the second storage section 2-3. Inside, there is a first partition 2-4 with an annular structure. The top of the first partition 2-4 is higher than the top of the second storage section 2-3, and the bottom is provided with a through hole 2-4-1, thereby dividing the second storage section 2-3 into a first storage space and a second storage space that are adjacent to each other and interconnected.

[0038] The feeding assembly 6 includes a main feed pipe 6-1, a circulating feed pipe 6-2, a circulating outlet pipe 6-3, a circulating diaphragm pump 6-4, and an annular reflux pipe 6-5. The annular reflux pipe 6-5 is fixedly installed at the bottom of the top cover 2-1 and connects to multiple outlet pipes 6-6 extending to the first storage space. Both the main feed pipe 6-1 and the circulating feed pipe 6-2 are connected to the annular reflux pipe 6-5. The circulating outlet pipe 6-3 connects to the second storage section 2-3 and is connected to the circulating feed pipe 6-2 via the circulating diaphragm pump 6-4. A liquid level detector is installed in the second storage section 2-3. The liquid level detector is signal-connected to the circulating diaphragm pump 6-4. The liquid level detector controls the operation of the circulating diaphragm pump 6-4 by detecting the liquid level, thereby drawing the liquid material in the second storage section 2-3 to the first storage space. In actual use, the material is conveyed through the main feed pipe 6-1 to the annular return pipe 6-5 and then flows to the first storage space. It then flows through the through hole 2-4-1 to the second storage space. The feeding continues until the liquid material overflows from the first storage section 2-2 and flows to the second storage section 2-3, which is located at a lower position. The liquid level detector detects the liquid level change and controls the operation of the circulating diaphragm pump 6-4. The circulating diaphragm pump 6-4 then pumps the material in the second storage section 2-3 back into the first storage space. Thus, under the joint regulation of the feeding speed of the circulating diaphragm pump and the main feed pipe, the liquid level in the first storage section 2-2 is always at the highest point. The outer circumference of the second storage space is provided with pipes that connect to each discharge nozzle 5-1, thereby realizing gravity-flow filling. Compared with the direct flow from the main feed pipe to the second storage space, it ensures a constant gravity-flow filling speed, improves filling accuracy, and effectively reduces foam generation. Multiple second baffles 2-5 are evenly distributed circumferentially in the upper part of the second storage space, thereby reducing the liquid flow in the rotating material box 2, further reducing foam generation, and making the flow rate to the filling head 5 more stable.

[0039] The upper outer circumference of the material box 2 is provided with an annular extension platform 2-6. The filling head 5 also includes a guide rod assembly 5-3 installed on the annular extension platform 2-6. The top of the guide rod assembly 5-3 is provided with a roller 5-4 that cooperates with the filling cam part 3, and the lower end is provided with a filling seat 5-5. The filling seat 5-5 is detachably fixed with a filling tube 5-6 that communicates with the material box 2. Specifically, a clamping cylinder is fixed on the filling seat 5-5, and the filling tube 5-6 is clamped by the clamping cylinder to achieve detachable fixed installation. The discharge nozzle 5-1 is sealed and inserted into the lower end of the filling tube 5-6. The back suction nozzle 5-2 is gapped outside the discharge nozzle 5-1. Its upper end is fixedly sealed to the discharge nozzle 5-1, and its lower end is higher than the lower end of the discharge nozzle 5-1. It also has a back suction port on the side that connects to the corresponding back suction branch pipe 4-3, thereby realizing the filling of materials in the middle and the back suction of foam on the outer periphery. Not only is the overall structure compact, but it can also expand the area for back suction of foam and improve the foam back suction effect.

[0040] This invention features a filling workbench 1 for placing transported empty bottles, a synchronously moving material bin 2 and filling head 5 for follow-up filling, and a foam back suction component 4. Combined with a specially structured filling head, the foam generated during gravity filling via the discharge nozzle 5-1 is promptly removed via the back suction nozzle 5-2 connected to the back suction component 4. The overall structure avoids the use of a piston cylinder. The specially designed material bin effectively reduces foam generation and simultaneously removes foam during filling, solving the foam problem in the bottle while meeting hygiene requirements. It does not require reducing the liquid filling speed and is better suited for filling products that are prone to foaming and have high hygiene requirements.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic filling machine, characterized in that: The device includes a filling worktable that rotates around itself, a material box located above the filling worktable and moving synchronously with it, and a filling cam portion fitted around the material box and fixed circumferentially. The material box has a top cover, a foam back suction component at the bottom, and multiple filling heads evenly distributed on its outer circumference. The top cover is rotatably sealed with the material box and is fixedly provided with a material box feeding component. The top of the filling head is circumferentially movable with the filling cam portion, and the bottom is located below the material box and is provided with a discharge nozzle and a back suction nozzle that respectively connect the material box and the foam back suction component. The material bin includes a first material storage section and a second material storage section adjacent to and lower than the first material storage section. The feeding assembly includes a main feed pipe and a circulating feed pipe connected to the first material storage section and a circulating outlet pipe connected to the second material storage section. A circulating diaphragm pump is provided between the circulating outlet pipe and the circulating feed pipe. A liquid level detector is provided in the second material storage section. The liquid level detector is signal connected to the circulating diaphragm pump. The first storage section is provided with a first partition, the top of the first partition is higher than the top of the second storage section, and the bottom is provided with a through hole, forming an adjacent and interconnected first storage space and second storage space. The first storage space and the second storage section are adjacent to each other. The main feed pipe and the circulating feed pipe are both connected to the first storage space, and the discharge nozzle is connected to the second storage space. The second storage section is cylindrical. The first storage space and the second storage space are both annular spaces and are arranged sequentially from the inside to the outside of the second storage section. Multiple second partitions are evenly distributed circumferentially on the upper part of the second storage space.

2. The automatic filling machine according to claim 1, characterized in that: The feeding assembly also includes an annular reflux pipe fixedly installed at the bottom of the top cover. The bottom of the annular reflux pipe is connected to a discharge pipe extending to the first storage space. Both the main feeding pipe and the circulating feeding pipe are connected to the annular reflux pipe.

3. An automatic filling machine according to claim 1, characterized in that: The upper outer circumference of the material box is provided with an annular extension platform. The filling head includes a guide rod assembly mounted on the annular extension platform. The top of the guide rod assembly is provided with a roller that cooperates with the filling cam part, and the lower end is provided with a filling seat. A filling tube communicating with the material box is detachably fixed on the filling seat. The discharge nozzle is sealed and inserted into the lower end of the filling tube. The back suction nozzle is gapped outside the discharge nozzle, with its upper end fixedly and sealed in contact with the discharge nozzle, and its lower end higher than the lower end of the discharge nozzle and with a back suction port communicating with the foam back suction assembly on its side.

4. An automatic filling machine according to claim 1, characterized in that: The foam back suction assembly includes an annular pipe located below the material box and a back suction main pipe that seals and penetrates the material box along the rotation axis. The annular pipe has back suction branch pipes connected to the back suction nozzles in the circumferential direction. The lower end of the back suction main pipe is connected to the annular pipe, and the upper end is connected to the material box by a rotary sealing joint. The rotary sealing joint is connected to an external suction device.

5. An automatic filling machine according to claim 1, characterized in that: A lead screw lifting mechanism is fixedly connected to the bottom of the filling cam section.

6. An automatic filling machine according to claim 5, characterized in that: The upper surface of the filling workbench is vertically provided with multiple screw lifting columns connected to the material box along the circumferential direction. A drive motor is fixedly installed on the lower surface. The lower end of the screw lifting column passes through the filling workbench and is coaxially fixedly connected to the driven gear. The motor shaft of the drive motor is coaxially fixedly connected to the driving gear. The driving gear and the driven gear are located on the same horizontal plane and are connected by chain transmission.

7. A filling production line, characterized in that: Including the automatic filling machine as described in any one of claims 1 to 6.

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