CN214493399U - Discharging mechanism - Google Patents

Abstract

The utility model provides a discharging mechanism, include: the filling head consists of a conical tube and a straight tube connected with the contraction part of the conical tube, the tail end of the straight tube is covered with a pressing head, and the pressing head forms a through hole for extruding powder; the screw rod penetrates through the conical tube and extends to the tail end of the straight tube, the side wall of the screw rod forms screw teeth which are continuously and spirally arranged, the screw teeth sequentially form a pitch change section positioned in the conical tube and a pitch constant section positioned in the straight tube along the longitudinal extension direction of the screw teeth, and the pitches of the pitch change section are all smaller than those of the pitch constant section; wherein, the screw, the pitch changing section and the inner wall of the conical pipe enclose a synthetic powder compression space, and the screw, the pitch constant section and the inner wall of the straight pipe enclose a synthetic powder homogenization space. The utility model provides an among the prior art filling mechanism the filling inefficiency and the relatively poor problem of filling quality.

Description

Discharging mechanism

Technical Field

The utility model relates to a powder filling field, more specifically relates to a discharge mechanism.

Background

With the continuous pursuit of people on the taste of the beverage and the emphasis on the convenience of carrying, storing, extracting and the like of the beverage, the beverage is processed into the beverage capsule which is convenient to store and carry. The capsule coffee is a capsule beverage, and is prepared by grinding coffee beans into coffee powder and then filling the coffee powder into an aluminum capsule, so that the problems of acid change, oxidation and the like of common coffee beans or coffee powder after contacting air are solved.

When the capsule coffee is produced, coffee powder is required to be filled in a pretreated cup body and then packaged. However, when the device for filling and encapsulating capsule coffee in the prior art fills powder, the filling efficiency is often low due to the structural design of the screw, and the filling quality of the powder is affected.

In view of the above, there is a need for an improved filling mechanism in the prior art to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to disclose a discharge mechanism to the filling inefficiency and the relatively poor problem of filling quality of filling mechanism among the solution prior art.

In order to achieve the above object, the utility model provides a discharging mechanism, include:

the filling head consists of a conical tube and a straight tube connected with the contraction part of the conical tube, the tail end of the straight tube is covered with a pressing head, and the pressing head forms a through hole for extruding powder;

the screw rod penetrates through the conical tube and extends to the tail end of the straight tube, threads which are continuously and spirally arranged are formed on the side wall of the screw rod, a thread pitch changing section located in the conical tube and a thread pitch constant section located in the straight tube are sequentially formed on the threads along the longitudinal extending direction of the threads, and the thread pitches of the thread pitch changing section are smaller than those of the thread pitch constant section;

the screw, the pitch change section and the inner wall of the conical pipe enclose a synthetic powder compression space, and the screw, the pitch constant section and the inner wall of the straight pipe enclose a synthetic powder homogenization space.

As a further improvement, the thread outer diameter of the pitch changing section is from the top end of the screw rod to the direction of the pitch constant section is gradually reduced, the thread outer diameter of the pitch constant section is the same, and is equivalent to the minimum thread outer diameter in the pitch changing section.

As a further improvement, the pitch of the pitch change section from the top of the screw rod to the direction of the pitch constant section increases gradually, the pitch of the pitch constant section equals, just the minimum pitch is equal to in the pitch change section the pitch of the pitch constant section.

As a further improvement, the tapered tube is connected with the measurement awl and fights, the constriction part that the measurement awl was fought with the flaring portion of tapered tube links to each other, the part thread that is close to the screw rod top in the pitch change section is located in the measurement awl is fought, just the screw rod the part thread that is close to the screw rod top in the pitch change section and the measurement awl is fought the inner wall and is enclosed synthetic powder and carry the space.

As a further improvement of the utility model, the flared part of the measuring cone bucket is connected with a cylindrical shell, a driving component is arranged above the cylindrical shell, a screw rotating shaft connected with the driving component longitudinally penetrates through the cylindrical shell part, the screw rotating shaft is sleeved with a rotating sleeve,

a longitudinal stirring rod connected with the rotary sleeve is longitudinally arranged in the cylindrical shell, an inclined stirring rod is formed at the tail end of the longitudinal stirring rod, and the longitudinal stirring rod is configured to gradually approach at least part of the inner wall of the cylindrical shell and drive the inclined stirring rod to gradually approach at least part of the inner wall of the metering cone when rotating by taking the screw rotating shaft as an axis;

wherein, the tail end of the inclined stirring rod is opposite to the position of a part of screw teeth close to the initial end of the screw rod.

In a further improvement of the present invention, a distal end surface of the inclined stirring rod is disposed as an inclined surface facing a part of the thread at the leading end of the screw.

As a further improvement of the utility model, the press head comprises the ring thin slice that covers at the terminal face of straight tube, just the internal diameter of press head is less than the internal diameter of straight tube, the external diameter of press head is not less than the external diameter of straight tube.

As a further improvement of the utility model, follow the through-hole border of press head has the guide portion to its central direction extension for guide powder via the through-hole ejection of compact of press head.

As a further improvement of the present invention, the guide portion is configured to be plural, and the plural guide portions are arranged on the terminal side of the screw rod with a center ring of the pressing head through hole, and free ends of the plural guide portions are all in contact with the terminal side of the screw rod.

As a further improvement of the present invention, the end of the screw rod is formed with a recessed portion, the fixing member is arranged on the ring surface of the pressing head, and the center of the fixing member is formed with a protruding portion limited to the recessed portion so as to be fixedly connected with the end of the screw rod.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a discharge mechanism compresses the powder that gets into to the toper pipe through the thread of the pitch change section of screw rod in the toper pipe, in order to ensure by the screw rod, powder in synthetic powder compression space is enclosed to pitch change section and toper pipe inner wall is filled and does not have the space, then the thread through pitch invariable section makes after the compression and go into to the intraductal powder by the screw rod, carry out the homogenization by screw rod in pitch invariable section and the straight tube inner wall encloses synthetic powder homogenization space and flows, and in being extruded to the cup that is located the straight tube below via the through-hole of press head, thereby realize the filling to the powder. Therefore, the utility model discloses a discharge mechanism compresses the compaction to the powder through pitch change section to make the mobile output of powder homogenization through the invariable section of pitch, from this, be convenient for improve the filling efficiency to the powder when guaranteeing powder filling quality. Thereby the problem that filling efficiency of filling mechanism is low and the filling quality is relatively poor among the prior art has been solved.

Drawings

Fig. 1 is a schematic perspective view of a filling platform according to an embodiment of the present invention;

fig. 2 is a schematic front view of a filling platform according to an embodiment of the present invention;

fig. 3 is a schematic connection structure diagram between the filling head, the metering cone and the cylindrical shell according to an embodiment of the present invention;

figure 4 is a schematic cross-sectional view of a filling head of an embodiment of the present invention;

fig. 5 is a schematic connection structure diagram of a driving assembly, a cylindrical shell and a measuring cone bucket according to an embodiment of the invention;

FIG. 6 is a schematic structural view of a pressing head according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a pressing head according to another embodiment of the present invention;

FIG. 8 is a bottom view of FIG. 3;

FIG. 9 is a schematic exploded view of a drive assembly of one embodiment of the present invention;

FIG. 10 is an enlarged schematic view of FIG. 9 at G;

FIG. 11 is an enlarged schematic block diagram at F of FIG. 5, in which reference numerals for some components are indicated;

FIG. 12 is an enlarged schematic block diagram at F of FIG. 5, in which reference numerals for another portion of the components are indicated;

FIG. 13 is a schematic block diagram of a carrier gear in the drive assembly;

FIG. 14 is a schematic connecting mechanism diagram of a master drive gear and a slave drive gear;

FIG. 15 is a schematic block diagram of a stirring assembly in accordance with an embodiment of the present invention;

FIG. 16 is an enlarged schematic view of FIG. 15 at C;

fig. 17 is a schematic enlarged structural view at D in fig. 15.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "positive", "negative", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Please refer to fig. 1 to 17 for a specific embodiment of a discharging mechanism of the present invention.

Referring to fig. 1 and 2, the present embodiment provides a filling platform, which includes a frame 10, a screw seat 101 for installing a screw 102 is disposed on the frame 10, and an air cylinder 103 (or a motor) for controlling the screw to move along a z-axis direction is installed on one side of the frame 10. The frame 10 is configured as two mounting plates arranged longitudinally (i.e., in the y-axis direction in fig. 1) and symmetrically, each of the mounting plates being formed with a mounting hole 104 through which the screw base 101 penetrates in the z-axis direction and supports the screw base 101. A shelf plate 20 is disposed on the frame 10, and a placing hole 201 for placing the cup body is formed on the shelf plate 20. Further, the resting plate 20 is placed on the screw rod 102 (i.e. the resting plate 20 is arranged on the screw rod 102 in the x-axis direction), and the resting plate 20 is driven to move along the length direction of the screw rod seat 101 when the screw rod 102 is controlled by the air cylinder 103 (or the motor) to move. Wherein the longitudinal depth of the mounting hole 104 is higher than the height from the bottom of the screw base 101 to the upper surface of the resting plate 20. The densification cup supporting component correspondingly arranged with the placing hole 201 is arranged below the placing plate 20, and a driver for controlling the densification cup supporting component to move up and down is formed in the densification power box 40.

As will be described with reference to fig. 1 to 5, the filling platform further includes a discharging mechanism. The discharge mechanism comprises a filling head 30 arranged on the frame 10, the filling head 30 being suspended above the resting plate 20 opposite the position of the placing hole 201. The end of the filling head 30 is covered with a pressing head 301 for pressing the surface of the powder in the cup body when the cup body is lifted to a preset distance by the lifting force of the densification cup supporting assembly, and the pressing head 301 is formed with a through hole for the powder to be extruded. As shown in fig. 6 to 8, a guide portion 3013 extends along the edge of the through hole of the pressing head 301 toward the center thereof to guide the powder to be discharged through the through hole of the pressing head.

It should be understood that, when the dense cup supporting assembly arranged below the placement plate 20 and corresponding to the placement hole 201 supports the cup body to rise to a preset distance, the discharging mechanism of the embodiment fills the powder into the cup body through the filling head 30 located above the placement plate 20 and corresponding to the placement hole 201. Because the press head 301 that the filling head 30 end was covered is formed with the through-hole that supplies the powder to extrude, consequently, the powder of extruding via the through-hole of press head 301 can drop to the cup in steadily to avoid the powder to be like gondola water faucet formula ejection of compact and lead to the powder to scatter to the cup border and influence the sealed effect of cup. Further, the powder extruded through the through hole of the pressing head 301 can be guided by the guide portion 3013 extending in the direction of the center of the through hole along the edge of the through hole of the pressing head 301, thereby further improving the quality of discharging the powder.

In addition, when filling head 30 filled the powder in to the cup, the increase density cup holder subassembly configuration is made up and is held up the cup and rise to first preset height to make the rim of a cup be close to filling head 30 end, make the powder fill to the cup in reliably when being convenient for filling head 30 extrudes the powder, reduce because the error of relative position between filling head 30 and the rim of a cup leads to the powder to spill at the rim of a cup and the rim of a cup outside and cause the filling environment variation. Stop to carry out the filling to the cup at filling head 30 and need press the real-time to the powder in the filling back cup, the densification holds in the palm the cup subassembly configuration and rises to the second and predetermine the height, and this second is predetermine highly to be greater than first predetermined height, so that the terminal press head 301 of filling head 30 stretches into to the interior powder surface of cup, through press head 301 flattening reliably and press the interior powder of cup, improve the roughness on powder surface in the cup and increase the density of the interior powder of cup, thereby improve the filling effect of filling head 30 to the interior powder of cup.

It should be noted that, the specific implementation process of the densification cup supporting assembly according to the embodiment that the cup body is lifted to the first preset distance and the cup body is lifted to the second preset distance is well known in the art, and detailed description thereof is omitted.

Specifically, the filling head 30 is constituted by a tapered tube 302 and a straight tube 303 connected to the end of the tapered tube 302. The pressing head 301 covers the end of the straight tube 303. A screw 307 extending through the tapered tube 302 and to the tip of the straight tube 303 is disposed inside the filling head 30, and the tip side of the screw 307 comes close to or in contact with the guide portion 3013. Specifically, the guide portions 3013 are arranged in a plurality, the plurality of guide portions 3013 are arranged on the distal end side of the screw 307 in a central loop of the through hole of the pressing head 301, free ends of the plurality of guide portions 3013 are all in contact with the distal end side of the screw 307, or the free ends of the plurality of guide portions 3013 are all approaching the distal end side of the screw 307. The number of the guide portions 3013 is at least three. In the embodiment of fig. 6, the guide portions 3013 are configured of four. In the embodiment of fig. 7, the guide portions 3013 are configured in six. Of course, the guiding portions 3013 may also be configured to be five, seven, eight, nine, ten, and so on, that is, the number of the guiding portions 3013 may be set according to actual working condition requirements, and is not limited to the range defined in this embodiment, as long as the discharging quality of the powder can be effectively improved to improve the filling effect, which is not illustrated in detail herein.

The pressing head 301 is formed of an annular sheet covering the distal end surface of the straight tube 303, and the inner diameter of the pressing head 301 is smaller than the inner diameter of the straight tube 303, and the outer diameter of the pressing head 301 is not smaller than the outer diameter of the straight tube 303. The pressing head 301 has a covering portion 3011 extending from the outer wall thereof in the longitudinal axis direction and coming into contact with the outer wall of the straight tube 303. The annular surface of the pressing head 301 is formed with a mounting hole 3012 for fixing the pressing head to the end of the straight tube 303, so as to realize reliable connection between the pressing head 301 and the straight tube 303.

As shown in fig. 4 and 8, a recessed portion 3171 is formed at the end of the screw 307, a fixing member 317 is disposed on the circumferential surface of the pressing head 301, and a protrusion 3172 is formed at the center of the fixing member 317 and is confined in the recessed portion 3171 to be fixedly connected to the end of the screw 307, so as to further fix the pressing head 301.

Further, the side wall of the screw 307 forms a thread 3071 which is continuously spirally arranged, and the thread 3071 is sequentially formed with a pitch variation section 3071a located in the tapered tube 302 and a pitch constant section 3071b located in the straight tube 303 along the longitudinal extension direction (i.e., the OS axis direction in fig. 4), and the pitch d of the pitch variation section 3071a is smaller than the pitch d of the pitch constant section 3071 b. The inner walls of the screw 307, the pitch varying section 3071a and the tapered tube 302 enclose a synthetic powder compression space 3020, and the inner walls of the screw 307, the pitch constant section 3071b and the straight tube 303 enclose a synthetic powder homogenization space 3030.

The discharging mechanism of this embodiment compresses the powder entering the tapered tube 302 by the screw thread 3071 of the pitch varying section 3071a of the screw 307 in the tapered tube 302 to ensure that the powder in the powder compression space 3020 surrounded by the screw 307, the pitch varying section 3071a and the inner wall of the tapered tube 302 is filled without a gap, and then homogenizes and flows the powder compressed and entering the straight tube 303 in the powder homogenizing space surrounded by the screw 307, the pitch constant section 3071b and the inner wall of the straight tube 303 by the screw thread 3071 of the pitch constant section 3071b, and is extruded into the cup below the straight tube 303 through the through hole 3010 of the pressing head 301, thereby realizing the filling of the powder. Therefore, the discharging mechanism of the embodiment compresses and fills the powder through the pitch variation section 3071a, and homogenizes and flows the powder to be output through the pitch constant section 3071b, so that the powder filling quality is ensured, and the powder filling efficiency is improved. Thereby the problem that filling efficiency of filling mechanism is low and the filling quality is relatively poor among the prior art has been solved.

As can be seen from the positional relationship between the reference line S1 (the reference line S1 is parallel to the OS axis) and the thread outer diameter connection line S2 located on the same side of the pitch variation segment 3071a in fig. 4, the outer diameter L of the thread 3071 of the pitch variation segment 3071a gradually decreases from the start end of the screw 307 toward the pitch constant segment 3071b, the outer diameter L of the thread 3071 of the pitch constant segment 3071b is the same, and the outer diameter of the thread 3071 of the pitch constant segment 3071b is equal to the smallest thread outer diameter of the pitch variation segment 3071 a. Thus, the arrangement that the outer diameter L of the thread 3071 of the thread pitch change section 3071a is gradually reduced facilitates further compression of the powder entering the powder compression space 3020, so as to further improve the quality of filling the compressed powder. The beginning of the screw 307 according to this embodiment is the end of the screw connected to the transmission rod 306.

As shown in fig. 4 and 5, a measuring cone 304 is connected to the upper end of the tapered tube 302, and a constricted portion of the measuring cone 304 is connected to a flared portion of the tapered tube 302. The portion of the thread of the pitch variation 3071a near the beginning of the screw 307 is located in the metering cone 304. The screw 307, a part of the thread near the screw start end in the pitch varying section 3071a, and the inner wall of the metering cone 304 together enclose a synthetic powder conveying space 3040. Thus, by providing the powder conveying space 3040 surrounded by the screw 307, the portion of the thread near the screw start end of the pitch varying section 3071a, and the inner wall of the measuring cone 304, it is possible to ensure that the powder introduced into the measuring cone 304 is stably supplied into the powder compression space 3020 surrounded by the screw 307, the pitch varying section 3071a, and the inner wall of the tapered tube 302, so that the powder is compressed in a fixed ratio in the powder compression space 3020 formed and the compressed powder is uniformly supplied through the powder uniformizing space 3030 formed. Thereby improving the filling quality and the filling efficiency of the compressed powder.

A cylindrical shell 305 is arranged above the metering cone 304 (the flared part of the metering cone 304 is connected with the cylindrical shell 305), a cover plate 308 is covered above the cylindrical shell 305, and a feed inlet 3081 for powder to enter the cylindrical shell 305 to enter the filling head 30 through the metering cone 304 is formed on the cover plate 308. The cover plate 308 is provided with a power box 309, and the power box 309 is provided with a driving assembly 3091 which sequentially penetrates through the bottom plate of the power box 309 and the cover plate 308. Below the metering cone 304 is arranged a filling head 30. The cylindrical shell 305 is internally provided with a transmission rod 306 which is connected with the tail end of a screw rotating shaft 703 of the driving assembly 3091 which sequentially penetrates through the bottom plate of the power box 309 and the cover plate 308 and extends into the metering cone 304, and the tail end of the transmission rod 306 is connected with the starting end of the screw 307. Of these, only the floor of the power box is shown in fig. 1 or 2.

As described with reference to fig. 5 and 9 to 14, the driving assembly 3091 includes: the stirring adapter flange seat 701 penetrates through the bottom plate of the power box 309 and the cover plate 308 along the direction of the first assembly axis 70a (or the first assembly axis 70 a' parallel to the first assembly axis 70 a), the integral bearing seat 702, the stirring adapter flange seat 701 is nested in the integral bearing seat 702 and extends out of the top of the integral bearing seat 702, and the stirring adapter flange seat 701 penetrates through the screw rotating shaft 703 extending out of two ends of the integral bearing seat 702. A gap bridge gear 704 is arranged above the stirring adapter flange seat 701.

The reducer mounting seat 750 is partially sleeved on the top of the integral bearing seat 702 along the first assembly axis direction (or the first assembly axis 70 a'), and a mounting hole 7501 for the passing gear 704 to transversely penetrate is formed in the side wall of the reducer mounting seat 750. The speed reducer mounting seat 750 is composed of a first mounting seat 751 partially sleeved on the top of the integral bearing seat 702 and a second mounting seat 752 which is formed above the first mounting seat 751 and has a radial dimension smaller than that of the first mounting seat 751, and a mounting hole 7501 is formed in the side wall of the first mounting seat 751; the second mounting base 752 is sleeved with a motor base 753 attached to the top end face of the first mounting base 751, the motor base 753 is sleeved at the top end of the screw rotating shaft 703 and attached to a coupler 754 arranged above the second mounting base 752, and the upper portion of the coupler 754 is connected with the screw servo motor 706 through a planetary reducer 755. The second mounting seat 752 is provided therein with an angular contact bearing 756 fitted around the screw shaft 703 and located above the annular stopper 7031 formed on the outer wall of the screw shaft 703 and abutting against the annular stopper 7031, and a bearing 757 located below the annular stopper 7031, and the bearing 757 is provided therein with a sealing cap 758 fitted around the screw shaft 703 and covering the lower end surface of the bearing 757 to abut against the corresponding driven wheel 7042.

The carrier gear 704 is composed of a driving wheel 7041 connected to the stirring motor 705, an intermediate gear 7043 engaged with the driving wheel 7041, and a driven wheel 7042 engaged with the intermediate gear 7043. In the case where there are a plurality of driven wheels 7042, an intermediate gear 7043 is engaged between adjacent driven wheels 7042. The driven wheel 7042 is sleeved on the screw rotating shaft 703, and the screw rotating shaft 703 is connected with the screw servo motor 706. An intermediate gear 7043 between the driving wheel 7041 and the driven wheel 7042 adjacent to the driving wheel penetrates through an intermediate shaft 7043b, the intermediate shaft 7043b sequentially penetrates through the ring piece 7043c, the bearing 7043d and the intermediate gear 7043 along the direction of a third assembly axis 70c, and the fixed ring 7043a is annularly fixed to the top end of the intermediate shaft 7043 b. An idler wheel mounting seat 7043a ' arranged on a bottom plate of the power box is abutted to the position right below an intermediate gear 7043 meshed between adjacent driven wheels 7042, and a connecting shaft of the idler wheel mounting seat 7043a ' sequentially penetrates through a ring piece 7043b ', a bearing 7043c ' and an end cover 7043d ' along the direction of a fourth assembling axis 70d to be abutted to the position below the intermediate gear 7043 meshed between the adjacent driven wheels 7042.

The driving wheel 7041 is formed with a protruding portion 7045 having a radial dimension smaller than an outer diameter dimension thereof, a first assembling plate 7051 partially sleeved on the protruding portion is disposed in close contact below the stirring motor 705, and a driving shaft of the stirring motor 705 penetrates the first assembling plate 7051 and the driving wheel 7041 along a second assembling axis 70b direction (parallel to the first assembling axis 70a or the first assembling axis 70 a'). The bottom plate of the power box 309 is arranged with a second assembly plate 7052 which is opposite to the first assembly plate 7051, and the second assembly plate 7052 is in supporting connection with the first assembly plate 7051 through a plurality of guide posts 7053 to limit the driving wheel 7041 in a space formed by the second assembly plate 7052 and the first assembly plate 7051.

The tail end of the stirring adapter flange seat 701 is sleeved with a main driving gear 707 positioned below the bottom plate of the power box 309, and two sides of the main driving gear 707 are engaged with auxiliary driving gears 7071 which partially protrude from windows 7021 formed in the side walls of the integral bearing seats 702. The middle shaft 7071a correspondingly penetrates through the arc-shaped plate 7071b, the driven gear 7071 and the fixing ring 7071c from top to bottom in sequence. The integral bearing block 702 is sleeved with a gear ring 7072 which is protruded from the window 7021 and meshed with the driven gear 7071, a gear ring bearing block 708 which is in ring surface fit arrangement with the gear ring 7072 is connected below the gear ring 7072, the side wall of the tail end of the gear ring bearing block 708 is connected with the stirring assembly 50, and the tail end of the screw rotating shaft 703 is connected with the screw 307. Specifically, the end of the screw shaft 703 is connected to the screw 307 via the transmission rod 306. The end of the stirring adapter flange seat 701 is configured into a rectangular housing with a corner having a preset radian and a gradually reduced transverse cross-sectional dimension. The main drive gear 707 is formed with a fitting through-hole 7073 that matches the outer wall shape of the rectangular housing. An accommodating groove is formed on the lower end ring surface of the main driving gear 707, and an end cover 7074 which is partially embedded in the accommodating groove and is attached to the end surface of the rectangular shell is sleeved on the screw rotating shaft 703. The drive assembly 3091 for the filling platform further includes a sealing cylinder 759 having the ring gear 7072 and a portion of the ring gear bearing block 708 embedded therein and extending toward the floor of the power box 309.

The driving assembly 3091 of this embodiment embeds the stirring adapter flange seat 701 in the direction of the first assembly axis 70a (or the first assembly axis 70 a') through the integral bearing seat 702, and moves under the driving of the stirring motor 705 through the intermediate gear arranged above the stirring adapter flange seat 701 extending from the top of the integral bearing seat 702, so as to drive the driven wheel 7042 to move through the driving wheel 7041 connected to the stirring motor 705, and drive the main driving gear 707 sleeved at the end of the stirring adapter flange seat 701 and located below the bottom plate of the power box to rotate, so as to drive the gear ring 7072 to rotate through the driven driving gear 7071 engaged with the main driving gear 707, and drive the gear ring bearing seat 708 to rotate to drive the stirring assembly 50 to rotate. Meanwhile, a screw rotating shaft 703 which penetrates through the stirring adapter flange seat 701, extends out of the tail end of the integral bearing seat 702 and extends along the first assembly axis direction drives the screw 307 to rotate under the driving of a screw servo motor 706. From this, the drive assembly of this embodiment not only compact structure and drive principle are simple, can realize stirring subassembly 50 and screw 307 mutually independent rotation simultaneously fast moreover, be convenient for stir in order to increase powder mobility through stirring subassembly 50 powder and rotate in order to output the powder through screw 307 controlled high speed simultaneously to improve filling effect and the filling efficiency to the powder. Therefore, the problems that the driving device in the prior art is large in structure, complex in driving principle and poor in driving effect are solved.

It should be noted that, the filling platform of this embodiment drives the stirring assembly 50 to rotate in the cylindrical housing through the driving assembly 3091, and simultaneously drives the screw 307 to rotate at a high speed to realize the powder filling process, so that not only can the stirring assembly 50 and the screw 307 rotate independently, but also the driving assembly can enable the stirring assembly 50 to be disengaged from the influence on the screw rotating shaft 703, so as to reduce the bounce of the screw rotating shaft 703, thereby ensuring the stability of the screw 307 in filling the powder.

Further, a first limit portion 7022 is formed near the inner wall of the integrated bearing seat 702 with the top open, the stirring adapter flange seat 701 is provided with a first bearing 709 attached to the first limit portion 7022, and a stop portion 7011 attached to a part of the annular surface of the first bearing 709 extends from the top of the stirring adapter flange seat 701 along the radial direction of the stirring adapter flange seat. The blocking portion 7011 is partially embedded in the lower end ring surface of the driven wheel 7042, a mounting hole 7044 is formed in the hole wall of the central through hole of the driven wheel 7042, and a mounting hole (not shown) opposite to the mounting hole 7044 is also formed in the blocking portion 7011, so that the sealing cover 758, the driven wheel 7042 and the stirring adapter flange seat 701 are fixed together by sequentially penetrating through the through hole (not shown) formed in the sealing cover 758, the mounting hole 7044 and the mounting hole formed in the blocking portion 7011 through bolt assemblies.

The inner wall of the integral bearing seat 702 is formed with a second limit portion 7023 which is located below the first limit portion 7022 and has an inner diameter smaller than the inner diameter of the first limit portion 7022, the stirring adapter flange seat 701 is sleeved with a second bearing 710 attached to the second limit portion 7023, and the main drive gear 707 is located below the second bearing 710. The stirring adapter flange seat 701 is sleeved with a spacer ring 711, two end faces of which are respectively attached to the first bearing 709 and the second bearing 710.

The integral bearing seat 702 has a contraction portion 7024 formed below the window 7021, the contraction portion 7024 is embedded with an angular contact bearing 712 sleeved on the screw rotation shaft 703, the inner wall of the tail end of the contraction portion 7024 is embedded with a bearing platform 713 attached to the angular contact bearing 712 and sleeved on the screw rotation shaft 703, and the screw rotation shaft 703 is sleeved with a stirring seat sealing cover 714 covering the end face of the contraction portion 7024 and attached to the inner wall of the tail end of the ring gear bearing seat 708. The contraction part 7024 is sleeved with a third bearing 715 fitted to the inner wall of the ring gear bearing block 708, the stirring base cover 714 is provided with a protruding part 7141 which extends in the direction of the ring surface of the third bearing 715 and the top of which is fitted to the ring surface of the third bearing 715, and the inner wall of the protruding part 7141 is fitted to the outer wall of the contraction part 7024. The protrusion 7141 is sleeved with a shaft circlip 760 which is attached to the annular surface of the third bearing 715, so as to prevent the driving assembly 3091 from moving longitudinally of the third bearing 715 during the process of driving the screw 307 to rotate and driving the stirring assembly 50 to rotate around the corresponding screw 307.

As shown in fig. 5 and fig. 15 to 17, the present embodiment further includes a stirring assembly, which specifically includes: the longitudinal stirring rod 51 connected with the gear ring bearing seat 708 is longitudinally arranged in the cylindrical shell 305, the inclined stirring rod 52 is formed at the tail end of the longitudinal stirring rod 51, and the longitudinal stirring rod 51 is configured to gradually approach at least part of the inner wall of the cylindrical shell 305 and drive the inclined stirring rod 52 to gradually approach at least part of the inner wall of the metering cone 304 when rotating by taking the screw rotating shaft 703 as an axis. The end of the inclined stirring rod 52 is opposite to the position of the partial screw thread near the beginning of the screw. The inclined direction of the inclined stirring rod 52 is consistent with the inclined direction of the corresponding inner wall of the metering cone 304 approaching the inclined stirring rod, and at least one stirring sheet 53 is arranged on one side of the longitudinal stirring rod 51 and one side of the inclined stirring rod 52 facing the extension direction of the longitudinal axis of the screw rotating shaft 703.

The stirring blades 53 arranged on the longitudinal stirring rod 51 and the inclined stirring rod 52 are respectively perpendicular to the side surfaces of the longitudinal stirring rod 51 and the inclined stirring rod 52 facing the extension direction of the longitudinal axis of the screw rotating shaft 703, the projection of the stirring blade 53a on the longitudinal stirring rod 51 and the projection of the stirring blade 53b on the inclined stirring rod 52 on the longitudinal stirring rod 51 and the inclined stirring rod 52 respectively form a preset angle beta with the transverse axis of the longitudinal stirring rod 51, and the adjacent stirring blades 53 are arranged at intervals. The transverse axis of the longitudinal stirring rod 51 is parallel to the transverse axis mm of the inclined stirring rod 52.

The stirring assembly of this embodiment drives the longitudinal stirring rod 51 connected to the ring gear bearing block 708 through the driving assembly 3091 to rotate at a high speed in the cylindrical housing 305 with the screw rotation shaft 703 as an axis, and simultaneously drives the inclined stirring rod 52 to rotate at a high speed in the metering cone 304, so as to stir the powder entering the metering cone 304 through the cylindrical housing 305, thereby ensuring the flowability of the powder. Further, the powder in the cylindrical housing 305 and the measuring cone 304 can be sufficiently stirred by at least one stirring blade 53 of the vertical stirring rod 51 and the inclined stirring rod 52 disposed toward one side in the direction in which the longitudinal axis of the screw shaft 703 extends, so that the flowability of the powder in the cylindrical housing 305 and the measuring cone 304 can be improved. Meanwhile, when the longitudinal stirring rod 51 rotates around the screw rotating shaft 703, the longitudinal stirring rod 51 gradually approaches at least a part of the inner wall of the cylindrical shell 305 to drive the inclined stirring rod 52 to gradually approach at least a part of the inner wall of the metering cone 304, so that the inclined direction of the inclined stirring rod 52 is consistent with the inclined direction of the inner wall corresponding to the metering cone 304 to which the inclined stirring rod 52 approaches, and the powder is conveniently pushed below the metering cone 304 by the inclined stirring rod 52. From this, solved among the prior art filling mechanism powder mobility poor easily cause jam and powder ejection of compact effect relatively poor lead to the lower problem of filling efficiency.

The tip end surface of the inclined stirring rod 52 is disposed as a first inclined surface 521 facing the partial screw thread at the start end of the screw 307, and the first inclined surface 521 is close to the discharge port inner wall of the measurement cone 304 (or close to the opening inner wall of the tapered tube 302) so that the powder is pushed downward of the measurement cone 304 by the first inclined surface 521 formed by the inclined stirring rod 52.

In order to further improve the efficiency of pushing the powder, a scraper extending into the opening of the tapered tube 302 to scrape the powder off the inner wall of the opening of the tapered tube 302 is disposed on the first inclined surface 521. The scraper is composed of a fixing portion 541 adhered to the first inclined surface 521 and a scraper 542 formed at the end of the fixing portion 541, wherein the scraper 542 is vertically and obliquely arranged on the end surface of the fixing portion 541, the long side of the scraper 542 and the long side of the end surface of the fixing portion 541 form an angle alpha, and the angle alpha can be configured to be any angle value within the range of 15-60 degrees. When the driving assembly drives the screw shaft 703 to rotate so as to drive the inclined stirring rod 52 to rotate, one side of the scraping blade 542 close to the inner wall of the discharge port of the metering cone 304 is located at the front end of the other side, so that the stirring assembly scrapes the powder (or the inner wall of the opening of the tapered tube 302) on the inner wall of the discharge port of the metering cone 304 through the side of the scraping blade 542 forming an angle α with the long side of the end surface of the fixing portion 541 during the rotation process, and the powder discharge effect is improved. The end of the scraping blade 542 forms a second inclined surface 543 facing the sidewall of the screw 307, so as to further improve the scraping effect on the inner wall of the discharge hole of the metering cone 304.

The top of vertical puddler 51 is formed with and transversely has the fixed plate 55, installs right angle fixed plate 56 between fixed plate 55 and the vertical puddler 51, and two right angle adjacent sides of right angle fixed plate 56 arrange with fixed plate 55, the laminating of vertical puddler 51 respectively to setting up through right angle fixed plate 56 improves stirring assembly's fastness. The fixing plate 55 is provided with a mounting portion 57 for connecting with the gear ring bearing block 708, so that when the driving assembly drives the screw rotating shaft 703 to rotate, the gear ring bearing block 708 drives the stirring assembly to rotate by taking the screw rotating shaft 703 as an axis.

In addition, the straight tube 303 of this embodiment can be sleeved with a sleeve 310, and a telescopic spring 311 arranged on the outer side wall of the straight tube 303 and located above the sleeve 310 is arranged to achieve the purpose of preventing the cup from hanging up through the cooperation of the sleeve 310 and the telescopic spring 311.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A discharge mechanism, comprising:

the filling head consists of a conical tube and a straight tube connected with the contraction part of the conical tube, the tail end of the straight tube is covered with a pressing head, and the pressing head forms a through hole for extruding powder;

the screw rod penetrates through the conical tube and extends to the tail end of the straight tube, threads which are continuously and spirally arranged are formed on the side wall of the screw rod, a thread pitch changing section located in the conical tube and a thread pitch constant section located in the straight tube are sequentially formed on the threads along the longitudinal extending direction of the threads, and the thread pitches of the thread pitch changing section are smaller than those of the thread pitch constant section;

the screw, the pitch change section and the inner wall of the conical pipe enclose a synthetic powder compression space, and the screw, the pitch constant section and the inner wall of the straight pipe enclose a synthetic powder homogenization space.

2. The discharge mechanism of claim 1,

the outer diameter of the thread changing section is gradually reduced from the starting end of the screw to the direction of the thread constant section, and the outer diameter of the thread constant section is the same and is equal to the minimum outer diameter of the thread in the thread changing section.

3. The discharge mechanism of claim 1,

the screw pitch of the screw pitch change section is gradually increased from the starting end of the screw to the direction of the screw pitch constant section, the screw pitches of the screw pitch constant section are equal, and the minimum screw pitch in the screw pitch change section is equal to the screw pitch of the screw pitch constant section.

4. The discharge mechanism of any one of claims 1 to 3,

the tapered tube is connected with a metering cone hopper, the contraction part of the metering cone hopper is connected with the flaring part of the tapered tube, part of threads close to the initial end of the screw rod in the pitch change section are positioned in the metering cone hopper, and the screw rod, part of threads close to the initial end of the screw rod in the pitch change section and the inner wall of the metering cone hopper enclose a synthetic powder conveying space.

5. The discharge mechanism of claim 4,

the flaring part of the metering cone hopper is connected with a cylindrical shell, a driving assembly penetrates through a cover plate of the cylindrical shell, a longitudinal stirring rod connected with the driving assembly is longitudinally arranged in the cylindrical shell, an inclined stirring rod is formed at the tail end of the longitudinal stirring rod, and the longitudinal stirring rod is configured to gradually approach at least part of the inner wall of the cylindrical shell and drive the inclined stirring rod to gradually approach at least part of the inner wall of the metering cone hopper when a screw rotating shaft penetrating through the cover plate of the shell in the driving assembly is taken as a shaft to rotate;

wherein, the tail end of the inclined stirring rod is opposite to the position of a part of screw teeth close to the initial end of the screw rod.

6. The discharge mechanism of claim 5,

the tip end surface of the inclined stirring rod is arranged as an inclined surface of a part of the screw teeth facing the start end of the screw.

7. The discharge mechanism of claim 1,

the pressing head is composed of an annular sheet covering the end face of the straight pipe, the inner diameter of the pressing head is smaller than that of the straight pipe, and the outer diameter of the pressing head is not smaller than that of the straight pipe.

8. The discharge mechanism of claim 7,

and a guide part extends along the edge of the through hole of the pressing head to the center direction of the through hole and is used for guiding powder to be discharged through the through hole of the pressing head.

9. The discharge mechanism of claim 8,

the guide parts are arranged in a plurality of numbers, the guide parts are distributed on the tail end side of the screw rod by a central ring of the pressing head through hole, and the free ends of the guide parts are all contacted with the tail end side of the screw rod.

10. The discharge mechanism of claim 7,

the tail end of the screw rod is provided with a concave part, the ring surface of the pressing head is provided with a fixing part, and the center of the fixing part is provided with a convex part which is limited in the concave part and is fixedly connected with the tail end of the screw rod.

Images