Suction-back filling mechanism

Abstract

The utility model discloses a resorption filling mechanism which comprises a mounting plate, a fixing frame, a supporting plate and a positioning frame, the fixing frame is fixedly mounted on the mounting plate, the supporting plate is fixed below the fixing frame, the positioning frame is synchronously arranged on the mounting plate, and a filling device and a servo moving device are arranged on the fixing frame. The servo moving device is fixedly connected with the fixing frame through a supporting plate, the filling device comprises a filling air cylinder, a piston rod, an upper barrel and a lower barrel, the upper barrel and the lower barrel are arranged in a nested mode, the end of the piston rod penetrates through the upper barrel and is arranged in the lower barrel, a back-suction part is arranged on the connecting portion of the upper barrel and the lower barrel, and a piston block is arranged on the portion, located on the back-suction part, of the piston rod. According to the filling device, liquid resorption is achieved through mutual cooperation of the resorption piece and the piston block, the problem of liquid leakage of the filling device is solved, and the problem that the edge of a package seal is not tight due to the fact that the edge of the package is smeared with residual liquid in the lower barrel is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a packing and filling mechanism, especially to a back-suction filling mechanism. BACKGROUND

[0002] In the production of liquid packaging, it is necessary to fill the liquid into the package by the filling mechanism. The traditional filling mechanism uses gravity to fill the liquid into the package, and the material flow is controlled by the height difference between the filling head and the container.

[0003] The Chinese utility model patent with publication number "CN218754968U" discloses a back-suction type liquid filling head for a filling machine, which comprises an upper cylinder, a lower cylinder and a piston rod.

[0004] The upper cylinder and the lower cylinder are connected, and a filling chamber is formed in the upper cylinder and the lower cylinder. A back-suction groove with a stepped groove structure is arranged at the upper end of the filling chamber, and the cross-sectional area of the back-suction groove is smaller than that of the filling chamber. The piston rod comprises a piston block and an upper fixed column fixedly connected to the upper side of the piston block. A back-suction sealing sleeve is arranged on the upper fixed column. The piston block is slidably arranged in the filling chamber, and the back-suction sealing sleeve is slidably arranged in the back-suction groove. A plurality of communication grooves are arranged on the side wall of the piston block. An elastic member is arranged below the piston block, and the upper end of the elastic member abuts against the piston block, and the lower end of the elastic member abuts against the bottom of the filling chamber.

[0005] However, the back-suction type liquid filling head for the filling machine has the following defects:

[0006] Firstly, the piston block is reset by the elastic member, and the elastic member is prone to elastic deformation during repeated use, which makes the filling channel unable to be closed and causes the loss of back-suction function.

[0007] Secondly, the filling chamber is limited by the upper cylinder and the lower cylinder, and the filling amount is small each time, which cannot meet the high-dose filling demand at one time.

[0008] Therefore, it is necessary to improve these technical problems. UTILITY MODEL CONTENT

[0009] The utility model aims to provide a filling mechanism with back-suction function and stable back-suction, so as to solve the above problems existing in the prior art.

[0010] To achieve the above object, the utility model discloses technical scheme is: a back suction perfusion mechanism, including mounting plate, fixed stand, support plate, positioning stand, fixed stand fixed mounting is in mounting plate, support plate is fixed in the below of fixed stand, positioning stand is synchronous in mounting plate, be equipped with perfusion device and servo mobile device on fixed stand, and servo mobile device realizes the fixed connection with fixed stand through support plate, and perfusion device includes perfusion cylinder, piston rod, upper cylinder, lower cylinder, and perfusion cylinder is fixed in the above of upper cylinder through support column, and upper cylinder and lower cylinder are nested arrangement, and piston rod end passes through upper cylinder and is in the lower cylinder, and the connecting portion of upper cylinder and lower cylinder is equipped with back suction piece, and piston rod is located back suction piece part and is equipped with piston block, and perfusion device realizes liquid back suction through the mutual cooperation of back suction piece and piston block.

[0011] Through adopt above technical scheme: the package of perfusion is moved to the positioning stand below back suction perfusion mechanism, and servo mobile device drives perfusion device to move down relative to positioning stand, and perfusion cylinder first fills from the bottom of package, and then servo mobile device slowly resets and makes perfusion cylinder gradually move up and fill to the designated height and moves to the initial position, and the perfusion operation of package is realized quickly.

[0012] The back suction perfusion mechanism can be further provided as follows: the servo mobile device includes a perfusion servo motor, the perfusion servo motor is provided with a perfusion sliding rod, the perfusion sliding rod is provided with a perfusion sliding block, and the fixed stand is fixedly connected with the perfusion sliding block.

[0013] Through adopt above technical scheme: the perfusion sliding block on perfusion servo motor is hinged with fixed stand, and the perfusion sliding block moves vertically on the perfusion sliding rod, so that the servo mobile device can accurately control the movement of the fixed stand through the perfusion servo motor, and stable perfusion from bottom to top is realized.

[0014] The back suction perfusion mechanism can be further provided as follows: the fixed stand includes a fixed plate, a fixed connecting block, a first fixed block and a second fixed block, the fixed connecting block is fixedly connected with the perfusion sliding block, the fixed connecting block is slidingly connected with the fixed plate, the first fixed block and the second fixed block are vertically arranged, a plurality of fixed grooves are formed in one end of the second fixed block close to the first fixed block, the first fixed block is provided with a hinge hole corresponding to the fixed grooves, the first fixed block and the second fixed block are hinged through the fixed grooves and the hinge hole, a plurality of perfusion fixing holes are formed in the second fixed block, and the perfusion device is arranged in the perfusion fixing holes on the second fixed block.

[0015] By adopting the technical scheme, the first fixing block and the second fixing block are arranged vertically and are hingedly connected through the fixing groove and the hinge hole, and the fixing groove has a certain length, so that the exposed length of the second fixing block can be adjusted according to the need, and the filling device in the filling fixing hole can perform more accurate filling operation on the package. The fixing frame is fixedly connected with the mounting plate through the fixing plate and the fixed connecting block, the fixing frame has a simple structure and is convenient to maintain, the installation and disassembly process of the filling device is simplified, the working efficiency is improved, and the fixing frame can be adaptively installed on various filling machines.

[0016] The back-suction filling mechanism can be further provided with a filling slide rail on the fixing plate, a vertical sliding block arranged on the side of the fixed connecting block close to the fixing plate, and the fixed connecting block is slidably connected with the fixing plate through the vertical sliding block.

[0017] By adopting the technical scheme, the filling slide rail and the vertical sliding block can provide a stable sliding mode for the fixed connecting block and the fixing plate, reduce the burden of the filling slide rod, and improve the durability of the back-suction filling mechanism.

[0018] The back-suction filling mechanism can be further provided with a sealing element arranged at the end of the upper cylinder body away from the lower cylinder body, a first sealing ring and a second sealing ring arranged below the sealing element, and a clamping element arranged below the second sealing ring, and the first sealing ring and the second sealing ring are stably arranged at the opening of the upper cylinder body through the sealing element and the clamping element.

[0019] By adopting the technical scheme, the sealing element, the first sealing ring and the second sealing ring are arranged at the end of the upper cylinder body, and the sealing rings are stably arranged at the upper cylinder body by using the clamping element, which can effectively enhance the sealing performance of the filling mechanism, provide double protection to prevent liquid from being drawn out of the upper cylinder body, improve the structural stability, reduce the risk of displacement or falling of the sealing ring due to vibration or pressure change. In addition, the upper cylinder body is convenient to maintain and replace the sealing ring, simplifies the maintenance process, reduces the maintenance cost, and can adapt to different working pressure and temperature conditions, improve the applicability and flexibility of the filling mechanism, reduce environmental pollution, and improve the operation safety.

[0020] The back-suction filling mechanism can be further provided with a positioning frame including a first positioning mounting plate, a second positioning mounting plate, a horizontal moving air cylinder and a positioning plate, the first positioning mounting plate and the second positioning mounting plate are respectively arranged on the two sides of the fixing frame and are hingedly connected with the mounting plate, the horizontal moving air cylinder is arranged at the end of the first positioning mounting plate and the second positioning mounting plate away from the mounting plate, a positioning slide rail is arranged below the horizontal moving air cylinder, the positioning slide rail is provided with a first positioning sliding block and a second positioning sliding block, and the positioning plate is arranged on the two sides of the first positioning sliding block and the second positioning sliding block.

[0021] By adopting the above technical solution: the positioning frame moves the positioning slide rail, the first positioning slider and the second positioning slider on the transverse cylinder. Before the package is filled, the first positioning slider and the second positioning slider are moved to the two sides of the positioning slide rail. After the package enters, the first positioning slide rail and the second positioning slide rail are reset to make the positioning plate against the two sides of the package, so that the size of the opening at the upper end of the package remains stable, the positioning operation is automated, and the production efficiency and operation consistency are improved.

[0022] The beneficial effects of the utility model are as follows: 1. The back-suction piece cooperates with the piston head to stabilize the filling capacity and prevent residual liquid in the lower cylinder from sliding down to realize the back-suction function when the filling cylinder moves repeatedly; 2. The filling cylinder of the filling device is divided into an upper cylinder and a lower cylinder, and the liquid outlet cylinder is convenient for disassembly and replacement of the back-suction piece, so that the filling device can be quickly maintained; 3. The servo moving device can accurately control the filling device to move slowly from bottom to top, so that the filling device can evenly distribute the filling in the package, and no residue will remain at the opening at the top of the package, causing the problem of loose sealing of the package.

[0023] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the back-suction and perfusion mechanism of the present utility model;

[0025] Figure 2 This is an explosion diagram of the back-suction and perfusion mechanism of the present invention;

[0026] Figure 3 It is an overall schematic diagram of the perfusion device of the present utility model;

[0027] Figure 4 This is an exploded schematic diagram of the perfusion device of the present invention;

[0028] Figure 5 It is a cross-sectional schematic diagram of the perfusion device of the present invention;

[0029] Figure 6 is an overall schematic diagram of the servo moving device of the present invention;

[0030] Figure 7 This is an overall schematic diagram of the fixing frame of the present utility model;

[0031] Figure 8 This is an exploded schematic diagram of the fixing bracket of the present invention;

[0032] Figure 9 This is an overall schematic diagram of the positioning frame of the utility model;

[0033] Figure 10 This is an exploded schematic diagram of the positioning frame of the utility model;

[0034] Label comment: mounting plate 1, fixed frame 2, support plate 21, fixed plate 22, perfusion slide rail 221, fixed connecting block 23, vertical sliding block 231, first fixed block 24, hinged hole 241, second fixed block 25, fixed groove 251, perfusion fixing hole 252, positioning frame 3, first positioning mounting plate 31, second positioning mounting plate 32, transverse movement air cylinder 33, positioning slide rail 331, first positioning sliding block 332, second positioning sliding block 333, positioning plate 34, perfusion device 4, perfusion air cylinder 41, piston rod 42, upper cylinder body 43, sealing element 431, first sealing ring 432, second sealing ring 433, clamping element 434, lower cylinder body 44, back suction element 45, piston block 46, support column 47, servo movement device 5, perfusion servo motor 51, perfusion sliding rod 52, perfusion sliding block 53. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0036] As Figures 1 to 10The back suction perfusion mechanism shown includes a mounting plate 1, a fixed frame 2, a support plate 21, a positioning frame 3, the fixed frame 2 is fixedly installed on the mounting plate 1, the support plate 21 is fixed below the fixed frame 2, the positioning frame 3 is synchronously arranged on the mounting plate 1, the fixed frame 2 is provided with a perfusion device 4 and a servo moving device 5, the servo moving device 5 is fixedly connected with the fixed frame 2 through the support plate 21, the perfusion device 4 includes a perfusion cylinder 41, a piston rod 42, an upper cylinder body 43 and a lower cylinder body 44, the perfusion cylinder 41 is fixed above the upper cylinder body 43 through a support column 47, the upper cylinder body 43 and the lower cylinder body 44 are nested, the piston rod 42 passes through the upper cylinder body 43 and extends into the lower cylinder body 44, a back suction piece 45 is arranged at the connecting part of the upper cylinder body 43 and the lower cylinder body 44, a piston block 46 is arranged at the part of the piston rod 42 located in the back suction piece 45, and the perfusion device 4 realizes liquid back suction through the cooperation of the back suction piece 45 and the piston block 46. The packaging to be perfused is moved to the positioning frame 3 below the back suction perfusion mechanism, the servo moving device 5 drives the perfusion device 4 to move downward relative to the positioning frame 3, the perfusion device 4 first fills from the bottom of the packaging, then the servo moving device 5 slowly resets to make the perfusion device 4 gradually move upward and fill to a specified height and then move to the initial position, thereby quickly realizing the perfusion operation of the packaging. In addition, through the cooperation of the piston rod 42 and the back suction piece 45, when the perfusion is completed, the piston rod 42 moves upward and tightly abuts against the back suction piece 45, so that the pressure in the lower cylinder body 44 is reduced, the residual liquid in the lower cylinder body 44 cannot flow downward due to the influence of external pressure, thereby realizing the function of liquid back suction, and effectively preventing the problem that liquid pollution of the packaging edge causes the packaging edge to be unable to be effectively sealed.

[0037] As shown in Figure 1 , Figure 2 , Figure 6 The servo moving device 5 includes a perfusion servo motor 51, the perfusion servo motor 51 is provided with a perfusion slide rod 52, the perfusion slide rod is provided with a perfusion slide block 53, the fixed frame 2 is fixedly connected with the perfusion slide block 53, and the perfusion slide block 53 moves vertically on the perfusion slide rod 52, so that the servo moving device 5 can accurately control the movement of the fixed frame 2 through the perfusion servo motor 51, thereby realizing stable perfusion from bottom to top.

[0038] As shown in Figure 1 , Figure 2 , Figure 7 , Figure 8The fixed frame 2 shown includes a fixed plate 22, a fixed connecting block 23, a first fixed block 24 and a second fixed block 25, the fixed connecting block 23 is fixedly connected with the pouring slide block 53, the fixed connecting block 23 is slidingly connected with the fixed plate 22, the first fixed block 24 and the second fixed block 25 are vertically arranged, a plurality of fixed grooves 251 are formed in one end of the second fixed block 25 close to the first fixed block 24, the first fixed block 24 is provided with a plurality of hinge holes 241 corresponding to the fixed grooves 251, the first fixed block 24 and the second fixed block 25 are hingedly connected through the fixed grooves 251 and the hinge holes 241, a plurality of pouring fixing holes 252 are formed in the second fixed block 25, and the pouring device 4 is arranged in the pouring fixing holes 252 of the second fixed block 25. Since the fixed grooves 251 have a certain length, the length of the second fixed block 25 relative to the first fixed block 24 can be adjusted as needed, so that the pouring device 4 in the pouring fixing hole 252 can perform more accurate pouring operation on the package. In addition, the fixed frame 2 is fixedly connected with the mounting plate 1 through the fixed plate 22 and the fixed connecting block 23, the fixed frame 2 has a simple structure and is convenient to maintain, simplifies the installation and disassembly process of the pouring device 4, improves the work efficiency, and can be adaptively installed on various pouring machines.

[0039] The fixed plate 22 is provided with a pouring slide rail 221, the fixed connecting block 23 is provided with a vertical slide block 231 close to one side of the fixed plate 22, and the fixed connecting block 23 is slidingly connected with the fixed plate 22 through the vertical slide block 231. The pouring slide rail 221 and the vertical slide block 231 can provide a stable sliding mode for the fixed connecting block 23 and the fixed plate 22, reduce the burden of the pouring slide rod 52, and improve the durability of the back-suction pouring mechanism.

[0040] As shown in Figures 1 to 5 The upper cylinder body 43 is provided with a sealing element 431 at one end away from the lower cylinder body 44, a first sealing ring 432 and a second sealing ring 433 are arranged below the sealing element 431, and a clamping element 434 is arranged below the second sealing ring 433. The sealing performance of the pouring mechanism can be effectively improved, double protection is provided to prevent liquid from being drawn out of the upper cylinder body 43, the structural stability is improved, the risk of displacement or falling of the first sealing ring 432 and the second sealing ring 433 due to vibration or pressure change is reduced, the first sealing ring 432 and the second sealing ring 433 are stably arranged at the opening of the upper cylinder body 43 through the sealing element 431 and the clamping element 434, the first sealing ring 432 and the second sealing ring 433 can be quickly maintained and replaced through the sealing element 431, the maintenance process is simplified, the maintenance cost is reduced, the applicability and flexibility of the pouring device 4 are improved, environmental pollution is reduced, and the operation safety is improved.

[0041] As shown in Figure 1 、 Figure 2 、 Figure 9 ,Figure 10 The positioning frame 3 shown comprises a first positioning mounting plate 311 and a second positioning mounting plate 321 respectively positioned on both sides of the fixed frame 2 and hinged to the mounting plate 1, a horizontal moving cylinder 33 provided at one end of the first positioning mounting plate 311 and the second positioning mounting plate 321 away from the mounting plate 1, a positioning slide rail 331 provided below the horizontal moving cylinder 33, a first positioning slide block 332 and a second positioning slide block 333 provided on the positioning slide rail 331, and a positioning plate 34 provided on both sides of the first positioning slide block 332 and the second positioning slide block 333. Before filling, the first positioning slide block 332 and the second positioning slide block 333 are moved to both sides of the positioning slide rail 331, and after the package is filled, the first positioning slide rail 331 and the second positioning slide rail 331 are reset to make the positioning plate 34 abut against both sides of the package, so that the size of the upper opening of the package is kept stable, the package positioning operation is automated, and the production efficiency and operation consistency are improved.

[0042] The above-described embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A back-suction perfusion mechanism, comprising a mounting plate, a fixing frame, a support plate, and a positioning frame, wherein the fixing frame is fixedly mounted on the mounting plate, the support plate is fixed below the fixing frame, and the positioning frame is synchronously mounted on the mounting plate, characterized in that: The fixed frame is provided with a filling device and a servo moving device, and the servo moving device is fixedly connected to the fixed frame through a support plate. The filling device includes a filling cylinder, a piston rod, an upper cylinder and a lower cylinder. The filling cylinder is fixed above the upper cylinder through a support column, and the upper cylinder and the lower cylinder are nested. The end of the piston rod passes through the upper cylinder and is placed in the lower cylinder. The connecting part of the upper cylinder and the lower cylinder is provided with a back suction piece, and the piston rod is provided with a piston block at the back suction piece. The filling device realizes liquid back suction through the mutual cooperation of the back suction piece and the piston block.

2. A back-suction perfusion mechanism according to claim 1, characterized in that: The servo moving device includes a pouring servo motor, a pouring slide rod is provided on the pouring servo motor, a pouring slider is provided on the pouring slider, and the fixing frame is fixedly connected to the pouring slider.

3. A back-suction perfusion mechanism according to claim 2, characterized in that: The fixing frame includes a fixing plate, a fixing connecting block, a first fixing block and a second fixing block, the fixing connecting block is fixedly connected to the perfusion slider, the fixing connecting block is slidably connected to the fixing plate, the first fixing block and the second fixing block are vertically arranged, the second fixing block is provided with a plurality of fixing grooves at one end close to the first fixing block, the first fixing block is provided with a hinge hole corresponding to the fixing groove, the first fixing block and the second fixing block are hinged through the fixing groove and the hinge hole, the second fixing block is provided with a plurality of perfusion fixing holes, and the perfusion device is provided in the perfusion fixing hole on the second fixing block.

4. A back-suction perfusion mechanism according to claim 3, characterized in that: The fixed plate is provided with a pouring slide rail, and the fixed connection block is provided with a vertical slider on a side close to the fixed plate. The fixed connection block is slidably connected to the fixed plate through the vertical slider.

5. A back-suction and perfusion mechanism according to claim 4, characterized in that: The upper cylinder is provided with a sealing member at one end away from the lower cylinder, a first sealing ring and a second sealing ring are provided below the sealing member, and a clamping member is provided below the second sealing ring. The upper cylinder secures the first sealing ring and the second sealing ring to the opening at the end of the upper cylinder through the sealing member and the clamping member.

6. A back-suction irrigation mechanism according to claim 5, characterized in that: The positioning frame includes a first positioning mounting plate, a second positioning mounting plate, a transverse cylinder and a positioning plate. The first positioning mounting plate and the second positioning mounting plate are respectively located on both sides of the fixed frame and are hinged to the mounting plate. The transverse cylinder is respectively arranged at one end of the first positioning mounting plate and the second positioning mounting plate away from the mounting plate. A positioning slide rail is provided under the transverse cylinder. The positioning slide rail is provided with a first positioning slider and a second positioning slider. The positioning plates are respectively arranged on both sides of the first positioning slider and the second positioning slider.

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