A multi-column micro-metering mixing filling mechanism and filling machine

Abstract

The present application discloses a multi-column micro-metering mixing filling mechanism and a filling machine, wherein the filling mechanism comprises a small hopper assembly, a metering mechanism, a transition hopper and material hoppers arranged longitudinally in the front and rear directions, the material hopper, the transition hopper, the metering mechanism and the small hopper assembly are arranged in sequence up and down, the small hopper assembly comprises small hoppers arranged horizontally according to the number of columns, the transition hopper is provided with multiple rows of material grids, the metering mechanism comprises a metering box containing a metering box plate and a filling mechanism corresponding to the number of material hoppers, the metering box plate is provided with multiple rows of metering slots, each group of filling mechanisms controls the filling of materials by the upper scraper and the lower knife plate fixed together, which move under the control of a servo motor. This solution solves the problem that the existing technology cannot measure at the same time and has low efficiency or cannot distinguish different materials through random sampling and metering, and achieves the beneficial effect of realizing that multiple materials can be filled at the same time or a certain material can be filled separately, and convenient random sampling to confirm whether the filling amount is stable during the production process.

Description

Technical Field

[0001] The present invention relates to the technical field of multi-column strip bag packaging equipment, in particular to a multi-column micro-metering mixing filling mechanism and a filling machine. Background Art

[0002] Currently, strip bag production lines use a metering mechanism to move the target weight of material from the silo into the finished bag. However, many pharmaceutical products now require a mixed filling of two materials, and mixing filling machines have emerged to meet this demand.

[0003] In order to solve the problem of metering two materials, the existing technology has also adopted some solutions. For example, the patent document with authorization announcement number CN211309021U provides a dual-material mixed metering and filling device, including a base assembly, a silo assembly, a metering assembly and a blanking assembly; a fixed silo assembly is provided above the base assembly, and the lower end of the silo assembly is provided with a metering assembly and a blanking assembly fixed on the base assembly in sequence, the upper end of the metering assembly cooperates with the silo assembly to realize feeding, and the lower end cooperates with the blanking assembly to realize blanking.

[0004] However, although this type of solution, such as the above-mentioned device, replaces the original operation of mixing two materials first and then measuring, reduces the difficulty of mixing and filling materials and filling errors, and improves the material measurement accuracy and filling efficiency, the two materials are measured and fed in sequentially, which is not efficient.

[0005] However, in the field of multi-row charter, there are also traditional structures that use one metering mechanism with two different silos to achieve this, such as Figures 8 to 10 As shown, the bottoms of the two silos are arranged in a staggered manner through transversely arranged material ports, and two corresponding transversely arranged metering slots are set under each material port. Then, the materials are dropped into the same small hopper through two different metering slots under the two adjacent material ports, thereby realizing the simultaneous filling of two materials. However, when filling two materials at the same time and the characteristics of the two materials are similar, random inspections during operation cannot distinguish between different materials, thereby detecting whether the filling amount is stable. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the present invention provides a multi-column micro-metering mixed filling mechanism and a filling machine to solve the problems of the above-mentioned existing technology that the metering efficiency is low or the sampling metering cannot distinguish different materials.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A multi-column micro-metering mixing filling mechanism comprises a material silo, a transition silo, a small hopper assembly and a metering mechanism, wherein the material silo, transition silo, metering mechanism and small hopper assembly are arranged in sequence up and down, the small hopper assembly comprises small hoppers arranged horizontally according to the number of columns, the material silos are arranged longitudinally front to back, the silo opening at the bottom of the material silo is strip-shaped and arranged adjacently in the longitudinal direction corresponding to the silo arrangement direction, the strip silo opening at the bottom of the material silo is staggered and arranged at intervals in the transverse direction, the transition silo is provided with a plurality of strip channels corresponding to the silo opening at the bottom of the silo and each strip channel is divided into a plurality of rows of material grids according to the number of columns, and each row of material grids is arranged evenly at intervals in the transverse direction according to the type and quantity of materials, the metering mechanism comprises a metering box, a side support, and a filling mechanism corresponding to the number of material silos, the metering box is installed between the side supports and comprises a metering box plate, and the metering box plate is provided with a plurality of rows corresponding to all material grids on the transition silo Metering trough, each group of filling mechanisms includes an upper scraper, a lower knife plate, a pad, a transmission structure and a servo motor, the upper scraper and lower knife plate of each group are strip-shaped and fixed to the metering box plate by the pads on both sides, the upper scraper and lower knife plate of each group are opened with material holes corresponding to the positions of the metering troughs, and the installation positions of the upper scraper and lower knife plates are longitudinally aligned with the front and rear of the corresponding row of metering troughs, the material holes of the upper scraper and the material holes of the lower knife plate are staggered horizontally relative to the positions of the metering troughs, and the upper scraper and lower knife plates move horizontally relative to the metering box plate through the transmission mechanism under the control of the servo motor, when the material holes of the upper scraper and the corresponding metering trough are aligned to form a channel, the corresponding material holes of the lower knife plate deviate from the channel, causing the lower knife plate to block the channel, when the material holes of the lower knife plate and the corresponding metering trough are aligned to form a channel, the corresponding material holes of the upper scraper deviate from the channel, causing the upper scraper to block the channel, all the metering troughs in front and behind each column fall within the upper edge of each small hopper in the corresponding column.

[0009] Preferably, the transmission mechanism includes a blade bracket, a connecting rod, and a crank connecting rod. The blade bracket is installed on both sides of the lower part of the lower blade, extending out of the lower blade and installed on the side support through a linear bearing. One end of the connecting rod is connected to the side of the blade bracket, and the other end is connected to the upper end of the crank connecting rod. The lower end of the crank connecting rod is connected to the shaft of the servo motor. The servo motor drives the connecting rod to move left and right laterally by driving the crank connecting rod to rotate, and then drives the lower blade and the upper scraper to move left and right laterally through the blade bracket.

[0010] Preferably, the connecting rod is flag-shaped, the rod portion is connected to the side of the blade bracket, the flag portion faces downward and has a downward notch, and the connecting rod is connected to the upper end of the crank connecting rod through the notch.

[0011] Preferably, a shaft hole with a clamping opening is opened at the lower portion of the crank connecting rod, and the shaft hole is clamped and fixed on the shaft of the servo motor using a clamping screw on the side.

[0012] Preferably, a circular hole is opened at the upper end of the crank connecting rod, a cam follower is fixed on the circular hole, and the cam follower is installed in the notch of the connecting rod flag portion.

[0013] Preferably, a reducer is installed between the servo motor and the crank connecting rod.

[0014] Preferably, the servo motor is installed on the outside of the side support by being installed on an L-shaped motor seat of the reducer.

[0015] Preferably, the servo motors of different groups of filling mechanisms are sequentially installed on the outsides of the side supports on different sides.

[0016] Preferably, parallel slider grooves of different lengths are opened at the rear of the metering box plate at the lateral position corresponding to the metering groove, leading to the metering groove, and the metering groove is formed by sliders of different lengths in the slider grooves.

[0017] Based on the same inventive concept, the present solution also provides a multi-column micro-metering mixing and filling machine, which uses the aforementioned multi-column micro-metering mixing and filling mechanism.

[0018] like Figure 3 In the initial state shown, the material holes of the upper scraper of each filling mechanism are aligned with the metering slots on the metering box plate to form a material discharge channel. Since the material holes on the lower blade plate and the material holes on the upper scraper are staggered and not on the same vertical plane, the material particles in the silo can fall through the material grid of the transition silo and stay in the metering slot. Figure 4 As shown, after metering is completed, the servo motor controls the upper scraper and the lower knife plate to move to the right, and the material hole of the lower knife plate is aligned with the metering groove on the metering box plate to form a material discharge channel. Since the material hole on the upper scraper and the material hole on the lower knife plate are staggered and not on the same vertical plane, the same material particles in the metering groove can pass through the small hopper below to enter the next packaging step.

[0019] Compared with the existing technology, the beneficial effect of this solution is that: by arranging the material silos longitudinally in the front and back, and by individually controlling different groups of filling mechanisms, each group of filling mechanisms is controlled by a servo motor, each group of filling mechanisms corresponds to each separate group of materials, and each group of filling mechanisms realizes the filling of materials through the left and right movement of the upper scraper and the lower knife plate. It can realize the filling of multiple materials at the same time and the filling of a certain material separately. When filling multiple materials at the same time, it is convenient to conduct random inspections during the production process, so as to distinguish different materials and confirm whether the filling volume is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective view of the upper side portion of an embodiment of a multi-row micro-metering mixing and filling machine;

[0021] Figure 2 It is a side view schematic diagram of an embodiment of a multi-row micro-metering mixing and filling machine;

[0022] Figure 3 Schematic diagram of the metering trough in the initial state with the upper opening and lower closing and the particles flowing in, as viewed along the AA section in the side view of one embodiment of a multi-row micro-metering mixing and filling machine;

[0023] Figure 4 Schematic diagram of the metering trough in the metering state with the upper closed and the lower open and the particles flowing out, as viewed from the AA section in the side view of one embodiment of the multi-row micro-metering mixing and filling machine;

[0024] Figure 5 A front view schematic diagram of an embodiment of a multi-column micro-metering mixing and filling machine with some additional components removed;

[0025] Figure 6 This is a cross-sectional diagram taken along line BB in a front view of an embodiment of a multi-column micro-metering mixing and filling machine;

[0026] Figure 7 This is a side and bottom perspective diagram of a material silo in accordance with an embodiment of a multi-row micro-metering mixing and filling mechanism;

[0027] Figure 8 This is a schematic side-view top-down perspective diagram of a transition silo in one embodiment of a multi-row micro-metering mixing and filling mechanism;

[0028] Figure 9 A schematic side plan view of an embodiment of a metering mechanism and hopper assembly, showing a concealed side support, a transmission mechanism, a servo motor, and a second upper scraper;

[0029] Figure 10 It is a schematic side top perspective view of one embodiment of a metering mechanism and a hopper assembly;

[0030] Figure 11 This is a schematic top view of a material silo in the prior art;

[0031] Figure 12 This is a schematic top view of the structure below the material silo of a prior art mixing and filling mechanism;

[0032] Figure 13 It is a bottom view schematic diagram of a prior art mixing and filling mechanism;

[0033] Among them, 11-first material silo, 12-second material silo, 13-transition silo, 2-small hopper, 3-metering mechanism, 301-metering box, 3011-metering box plate, 3012-metering trough, 3013-slider, 302-upper scraper, 302a-first upper scraper, 302b-second upper scraper, 303-lower blade, 303a-first lower blade, 303b-second lower blade, 304-pad, 305-blade bracket, 30 6-connecting rod, 307-crank connecting rod, 308-servo motor, 308a-first servo motor, 308b-second servo motor, 309-side support, 310-linear bearing, 311-cam follower, 312-reducer, 313-motor base, 39-metering feedback component, 4-rolling cutter component, 5-loader and bracket component, 6-former component, 61-filling tube, 62-dust suction tube body, 7-longitudinal sealing guide component, 8-dust suction component. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] The present embodiment provides a technical solution: an eight-column micro-metering mixing and filling mechanism for dual materials, comprising two material silos, a transition silo 13, a small hopper assembly and a set of metering mechanisms 3, wherein the two material silos, the transition silo 13, the metering mechanism 3 and the small hopper assembly are arranged in sequence up and down, and the small hopper assembly comprises eight transversely arranged small hoppers 2, the first material silo 11 and the second material silo 12 are arranged longitudinally front to back, the silo openings at the bottom of the material silo are strip-shaped and arranged back to back adjacently in the longitudinal direction corresponding to the silo arrangement direction, and the strip silo openings at the bottom of the material silo are staggered and arranged at intervals in the transverse direction. Since it is a dual material, the staggered interval can be half the width of the material grid of the transition silo. When there are three silos, the interval can be one-third. The width of a material grid, the transition silo 13 is provided with two strip channels corresponding to the silo bottom silo opening, and each strip channel is divided into two rows of material grids by eight columns, and the front and rear material grids are evenly spaced laterally, that is, the front and rear material grids are staggered by half a material grid width. Similarly, if there are three silos, they can be staggered by one-third of the material grid width. The metering mechanism 3 includes a metering box 301, left and right side supports 309 and two groups of filling mechanisms. The metering box 301 is installed between the side supports 309 and includes a metering box plate 3011. The metering box plate 3011 is connected to the metering groove 3012 by 16 parallel slider grooves of two lengths at the horizontal position corresponding to the metering groove 3012 at the rear. The two lengths of the slider grooves are used to slide the silos. The blocks 3013 form two rows of metering slots 3012 corresponding to all the material grids on the transition silo 13. Each group of filling mechanisms includes an upper scraper 302, a lower knife plate 303, two pads 304, a transmission structure and a servo motor 308. The upper scraper 302 and the lower knife plate 303 of each group are strip-shaped and fixedly clamp the metering box plate 3011 through the pads 304 on both sides. The first upper scraper 302a and the first lower knife plate 303a of the front group are provided with eight material holes corresponding to the positions of the front row metering slots 3012, and the installation position is longitudinally aligned with the eight metering slots 3012 in the front row. The second upper scraper 302b and the second lower knife plate 303b of the rear group are provided with eight material holes corresponding to the positions of the rear row metering slots 3012, and the installation position is longitudinally aligned with the eight metering slots 3012 in the rear row. The metering grooves 3012 are aligned longitudinally front to back, and the material holes of the upper scraper 302 and the material holes of the lower knife plate 303 are staggered laterally relative to the metering grooves 3012, so that the upper scraper 302 and the lower knife plate 303 move laterally relative to the metering box plate 3011 through the transmission mechanism under the control of the servo motor 308. When the material holes of the upper scraper 302 and the corresponding metering grooves 3012 are aligned to form a channel, the corresponding material holes of the lower knife plate 303 deviate from the channel, causing the lower knife plate 303 to block the channel. When the material holes of the lower knife plate 303 and the corresponding metering grooves 3012 are aligned to form a channel, the corresponding material holes of the upper scraper 302 deviate from the channel, causing the upper scraper 302 to block the channel. The front and rear two metering grooves 3012 of each column fall within the upper edge of each small hopper 2 in the corresponding column.

[0036] The transmission mechanism can be implemented by any structure that allows the upper scraper 302 and the lower blade 303 to move left and right on the metering box plate. In this embodiment, the following structure is adopted: it includes a blade bracket 305, a connecting rod 306, and a crank connecting rod 307. The blade bracket 305 is installed on both sides of the lower part of the lower blade 303 and extends out of the lower blade 303 and is installed on the side support 309 through a linear bearing 310. The connecting rod 306 is flag-shaped, and the rod part is connected to the side of the blade bracket 305, the flag part faces downward and has a downward notch. The connecting rod 306 is connected to the upper end of the crank connecting rod 307 through the notch. The lower portion of the crank connecting rod 307 has a shaft hole with a clamping notch, which is clamped to the shaft of the servo motor 308 using a clamping screw on the side. The upper end of the crank connecting rod 307 has a circular hole, and a cam follower 311 is fixed to the circular hole. The cam follower 311 is installed in the notch of the connecting rod 306. The servo motor 308 drives the crank connecting rod 307 to rotate, driving the connecting rod 306 to move horizontally. In turn, the blade bracket 305 drives the lower blade 303 and the upper scraper 302 to move horizontally. This structure makes the left and right movement of the upper scraper 302 and the lower blade 303 smoother. A reducer 312 is also installed between the servo motor 308 and the crank connecting rod 307.

[0037] In this embodiment, the servo motor 308 is mounted on the outside of the side support 309 via an L-shaped motor mount 313 mounted on a speed reducer 312. Of course, the motor mount 313 can also be mounted on the servo motor 308. Since this embodiment has two filling mechanisms, the first servo motor 308a of the front filling mechanism is mounted on the outside of the left side support 309, and the second servo motor 308b of the rear filling mechanism is mounted on the outside of the right side support 309. This provides more space for the servo motors 308, allowing them to be arranged in a left-right sequence when more groups of materials are required.

[0038] When filling materials, assuming that the first material is set as the main material and the sampling cycle is set, the program will automatically fill the first material separately according to the set time, weigh the bag manually or by automatic checkweigher to determine the accuracy of the filling amount and adjust the volume of the metering mechanism channel.

[0039] Based on the same inventive concept, the present scheme also provides a multi-column micro-metering mixing and filling machine, which uses the aforementioned multi-column micro-metering mixing and filling mechanism, and also includes a loader and bracket component 5 at the top, a metering feedback component 39 at the rear of the filling mechanism, a rolling cutter component 4 below the metering feedback component 39, a former component 6 below the filling mechanism, and a longitudinal sealing guide component 7 at the bottom of the former component. A vacuum conveyor is installed on the feeder to transport external materials into the material hopper of the multi-column micro-metering mixing and filling machine provided by the above-mentioned scheme. The material hopper is also equipped with a level meter to determine the amount of material in the hopper and determine whether to use the feeder to feed. A metering feedback component 39 can adjust the volume of the metering mechanism channel. The metering feedback component 39 is movably connected to the rear of the metering structure 3 via a locating pin structure, facilitating the removal and cleaning of the metering box 301 via the front handle. The metering feedback component 39 controls the slider 3013 through another servo motor to move back and forth to adjust the size of the metering slot 3012, thereby adjusting the volume of the metering mechanism channel. The servo motor of the metering feedback component 39 and the slider drive mechanism of the metering box 301 are both equipped with transparent covers for observing and repairing internal foreign matter. The small hopper 2 is used to guide material falling from the metering box 301, allowing it to flow into the filling pipe 61 of the former component 6. The small hopper 2 is connected to the filling tube 6 via a sealing rubber hose. The filling tube 61 guides the material from the lower portion of the filling tube into the packaging bag. The rolling cutter component 4 cuts the film material into multiple rows of film of a certain size and width. The former component 6 shapes the film roll into a shape suitable for filling. The longitudinal sealing guide component 7 uses a hot block to seal the film roll longitudinally. The multi-row micro-metering mixing and filling machine may also include a side dust collection component 8. This dust collection component 8 removes excess dust generated by material particles during the filling process through the dust collection tube 62 at the front of the former component 6.

[0040] The above is only a preferred specific implementation method of this solution, but the scope of protection required by this solution is not limited to this. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solution and inventive concept of this application, which should be covered by the scope of protection of this application.

Claims

1. A multi-column micro-metering mixing and filling mechanism, comprising a material silo, a transition silo (13), a small hopper assembly and a metering mechanism (3), wherein the material silo, the transition silo (13), the metering mechanism (3) and the small hopper assembly are arranged in sequence up and down, and the small hopper assembly includes small hoppers (2) arranged transversely in columns, characterized in that: The material silos are arranged longitudinally front to back, the silo openings at the bottom of the material silos are strip-shaped and arranged adjacent to each other longitudinally in the direction of the silo arrangement, the strip-shaped silo openings at the bottom of the material silos are arranged at intervals in the transverse direction, the transition silo (13) is provided with a plurality of strip-shaped channels corresponding to the silo openings at the bottom of the silo, and each strip-shaped channel is divided into a plurality of rows of material grids according to the number of columns, and each row of material grids is arranged transversely at even intervals according to the number of material types, the metering mechanism (3) comprises a metering box (301), a side support (309), and a filling mechanism corresponding to the number of material silos. The metering box (301) is installed between the side supports (309) and includes a metering box plate (3011). The metering box plate (3011) is provided with multiple rows of metering slots (3012) corresponding to all the material grids on the transition silo (13). Each group of filling mechanisms includes an upper scraper (302), a lower knife plate (303), a pad (304), a transmission structure and a servo motor (308). The upper scraper (302) and the lower knife plate (303) of each group are strip-shaped and are fixedly clamped to the metering box plate (3011) by the pads (304) on both sides. 3011), each set of upper scraper (302) and lower blade (303) is provided with a material hole corresponding to the position of the metering groove (3012), and the installation position of the upper scraper (302) and the lower blade (303) is aligned longitudinally with the corresponding row of metering grooves (3012) in the front and rear direction, the material hole of the upper scraper (302) and the material hole of the lower blade (303) are arranged transversely staggered relative to the position of the metering groove (3012), and the upper scraper (302) and the lower blade (303) are relatively metered by a transmission mechanism under the control of a servo motor (308). The box plate (3011) moves laterally. When the material holes of the upper scraper (302) and the corresponding metering grooves (3012) are aligned to form a channel, the material holes corresponding to the lower blade (303) deviate from the channel, so that the lower blade (303) blocks the channel. When the material holes of the lower blade (303) and the corresponding metering grooves (3012) are aligned to form a channel, the material holes corresponding to the upper scraper (302) deviate from the channel, so that the upper scraper (302) blocks the channel. All the metering grooves (3012) in front and behind each column fall within the upper edge of each small hopper (2) in the corresponding column.

2. The multi-column micro-metering mixing and filling mechanism according to claim 1, characterized in that: The transmission mechanism comprises a blade support (305), a connecting rod (306), and a crank connecting rod (307). The blade support (305) is mounted on both sides of the lower portion of the lower blade (303), extends out of the lower blade (303), and is mounted on a side support (309) via a linear bearing (310). One end of the connecting rod (306) is connected to a side surface of the blade support (305), and the other end is connected to an upper end of the crank connecting rod (307). The lower end of the crank connecting rod (307) is connected to the shaft of a servo motor (308). The servo motor (308) drives the crank connecting rod (307) to rotate, driving the connecting rod (306) to move horizontally left and right, and then drives the lower blade (303) and the upper scraper (302) to move horizontally left and right through the blade support (305).

3. The multi-column micro-metering mixing and filling mechanism according to claim 2, characterized in that: The connecting rod (306) is flag-shaped, with the rod portion connected to the side of the blade bracket (305), the flag portion facing downward and having a downward notch, and the connecting rod (306) is connected to the upper end of the crank connecting rod (307) through the notch.

4. The multi-column micro-metering mixing and filling mechanism according to claim 3, characterized in that: The lower portion of the crank connecting rod (307) is provided with an axial hole with a clamping opening, and the axial hole is clamped and fixed to the shaft of the servo motor (308) using a clamping screw on the side.

5. The multi-column micro-metering mixing and filling mechanism according to claim 4, characterized in that: A circular hole is formed at the upper end of the crank connecting rod (307), a cam follower (311) is fixed to the circular hole, and the cam follower (311) is installed in the notch of the flag portion of the connecting rod (306).

6. The multi-column micro-metering mixing and filling mechanism according to claim 2, characterized in that: A speed reducer (312) is also installed between the servo motor (308) and the crank connecting rod (307).

7. The multi-column micro-metering mixing and filling mechanism according to claim 6, characterized in that: The servo motor (308) is mounted on the outside of the side support (309) via an L-shaped motor seat (313) mounted on the reducer (312).

8. The multi-column micro-metering mixing and filling mechanism according to claim 1, characterized in that: The servo motors (308) of different groups of filling mechanisms are sequentially mounted on the outsides of the side supports (309) on different sides.

9. The multi-column micro-metering mixing and filling mechanism according to claim 1, characterized in that: The metering box plate (3011) has parallel slider grooves of different lengths at the rear portion corresponding to the transverse position of the metering groove (3012) and connected to the metering groove (3012). The metering groove (3012) is formed by sliders (3013) of different lengths in the slider grooves.

10. A multi-row micro-metering mixing filling machine, comprising a filling mechanism, a loader and a support component (5) on the top of the filling mechanism, a metering feedback component (39) at the rear of the filling mechanism, a rolling cutter component (4) below the metering feedback component (39), a former component (6) below the filling mechanism, and a longitudinal sealing guide component (7) below the former component (6), wherein the loader and support component (5) convey materials into a material silo, the metering feedback component (39) adjusts the volume of the metering mechanism channel, the rolling cutter component (4) cuts the film material into multiple rows of films of a certain size and width, the former component (6) shapes the rolled film into a shape suitable for filling, and the longitudinal sealing guide component (7) uses a hot block to longitudinally seal the rolled film, characterized in that: The filling mechanism uses the multi-column micro-metering mixing filling mechanism as described in any one of claims 1-9.

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