CN107782427B - Automatic powder weighing machine - Google Patents
Automatic powder weighing machine Download PDFInfo
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- CN107782427B CN107782427B CN201711145331.4A CN201711145331A CN107782427B CN 107782427 B CN107782427 B CN 107782427B CN 201711145331 A CN201711145331 A CN 201711145331A CN 107782427 B CN107782427 B CN 107782427B
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- 238000005303 weighing Methods 0.000 title claims abstract description 190
- 239000000843 powder Substances 0.000 title claims abstract description 90
- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 238000003860 storage Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 107
- 230000009471 action Effects 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 10
- 230000007306 turnover Effects 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 101100372509 Mus musculus Vat1 gene Proteins 0.000 description 7
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010288 cold spraying Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009702 powder compression Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The invention relates to an automatic powder weighing machine which comprises a frame, a storage vat, a feeding mechanism and a weighing assembly, wherein the storage vat, the feeding mechanism and the weighing assembly are arranged on the frame and are sequentially arranged from top to bottom, the weighing assembly comprises a weighing cup and a weighing sensor, and the weighing sensor is arranged at the bottom of the weighing cup to weigh the weight of powder in the weighing cup. According to the invention, the weighing sensor is arranged at the bottom of the weighing cup, and only needs to bear the weight of the weighing cup and the total weight of the powder to be quantitatively output in each setting, and a small-range weighing sensor is selected, so that the weighing precision is improved; the weighing sensor and the feeding mechanism are arranged separately, so that the influence of vibration on the weighing sensor during motor rotation is avoided, and the weighing precision is improved; and because there is not the range restriction of weighing sensor, can once only add more powder in the storage vat, need not frequent reinforced, convenient operation, degree of automation is high.
Description
Technical Field
The invention relates to a weighing device, in particular to an automatic powder weighing machine.
Background
At present, a plurality of mechanical parts and daily necessities commonly use powder or granular materials as primary raw materials, and the primary raw materials are further processed and molded, and the primary raw materials are often required to be quantitatively weighed and packaged in advance in the production process. For example, powder compression molding is a production method of many machine parts and daily necessities, and powder is firstly weighed and then conveyed into a mold.
In view of the defects of high labor intensity, low precision and the like of manual weighing, mechanical weighing equipment with high precision and high automation degree is increasingly applied. The powder feeder is an auxiliary matched device which is indispensable in the industries of thermal spraying, cold spraying, food, medicine, chemical industry and the like, and the accuracy degree or level of powder feeding or feeding quantity can directly influence the stability, uniformity and accuracy of products and further influence the quality of the products.
The existing powder feeder generally adopts screw pushing type feeding, namely, powder is conveyed out through rotation of a screw motor. As shown in the improved screw type accurate powder feeder disclosed in the patent No. ZL201420132621.0 (bulletin No. CN 203833240U), a bin is suspended and installed on a frame through a weighing sensor, a material conveying pipe is connected to the lower part of the bin, a screw is coaxially installed in the material conveying pipe, the material conveying pipe is connected with a discharge hole, the outer end of the screw is connected with a motor reducer, a feed inlet is arranged at the upper end of the bin, an air inlet pipe is connected to the bin or the material conveying pipe, and the weighing sensor is connected with a control cabinet through a control line.
The powder feeder has the following defects: 1. the weighing sensor weighs the stock bin and the motor speed reducer together, so that a large-range weighing sensor is needed to be selected, the powder discharge amount of each time is calculated by reducing the difference value of the powder each time, and the weighing precision is low; 2. because of the limitation of the measuring range of the weighing sensor, the powder added into the charging barrel each time is limited, and frequent manual powder addition is needed; 3. the rotation of the motor in the weighing process can influence the precision of the weighing sensor, so that the precision degree of the powder output is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automatic powder weighing machine with high weighing precision aiming at the current state of the art.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an automatic powder weighing machine, includes the frame, locates storage vat, feeding mechanism and the weighing module that the top-down set gradually in the frame, the weighing module is including weighing material cup and weighing sensor, weighing sensor locates the bottom of weighing material cup in order to weigh the weight of weighing the powder in the material cup.
For making the title material cup can weigh the material in succession, as the preferred, automatic title powder machine still includes and holds material mechanism, weighing assembly still includes tilting mechanism, hold material mechanism including upper end opening and be located the material cup of holding of title material cup below, it can overturn in order to pour the powder into and hold the material cup under tilting mechanism effect to weigh the material cup. After the powder in the weighing cup is poured into the material bearing cup under the action of the turnover mechanism, the feeding mechanism can continuously send the powder to the weighing cup, so that the circulation is realized, and the automation degree is high.
Specifically, preferably, the turning mechanism includes
The support is arranged on the frame;
the first driving mechanism is arranged on the support;
the bracket is arranged on the weighing sensor;
The overturning arm is connected to the weighing cup through an overturning central shaft, and the overturning central shaft is rotationally connected to the bracket;
The fork piece is arranged at the output end of the first driving mechanism, the overturning arm is positioned in a fork groove of the fork piece and is provided with a gap with the fork piece, and the fork piece can rotate and push the overturning arm to rotate relative to the support under the action of the first driving mechanism so as to overturn the weighing cup.
When the weighing cup is in a weighing state, a gap is reserved between the fork piece and the overturning arm without contact, so that the weighing precision is prevented from being influenced. After weighing is finished, the fork piece rotates under the action of the first driving mechanism until the fork piece abuts against the overturning arm and pushes the overturning arm to rotate, and the weighing cup overturns accordingly so as to pour powder into the material bearing cup.
In order to avoid the phenomenon that powder in the weighing cup is not completely poured and influences the quality of the final product, the overturning arm is arranged offset from the gravity center line of the weighing cup. After the gravity center of the weighing cup passes over the critical point, the powder can be continuously turned over and poured under the action of rotation inertia. The first driving mechanism stops running after reaching a set fixed angle, so that the fork piece stops rotating, a gap is reserved between the weighing cup and the fork piece, the weighing cup can continue to overturn under the action of overturning inertia, and the weighing cup and the fork piece generate reciprocating collision for a plurality of times in the process, so that the residue of powder in the weighing cup is reduced as much as possible.
However, the eccentric design structure enables the weighing cup to be in an unbalanced state and easy to shake, so that the flange is convexly arranged on the outer side wall of the weighing cup, which is far away from the turning arm, and the flange is clamped with the support to prevent the weighing cup from being in an unbalanced state and turning, so that the weighing cup, the support and the weighing sensor do not shake, and the accuracy of the powder weighing process is ensured.
In order to avoid the fork piece not resetting yet, the material weighing cup starts weighing the material, so that the material weighing precision is low, and as optimization, a proximity switch is arranged on the support, an induction piece is arranged on the fork piece, and the proximity switch is matched with the induction piece to sense whether the fork piece resets or not. When the proximity switch senses that the fork piece is reset, no contact exists between the fork piece and the overturning arm, and the weighing cup starts weighing; otherwise, the fork piece contacts with the overturning arm, and weighing is started after the fork piece is reset.
In order to avoid weighing the material cup when pouring the material in the material cup, powder is unrestrained, as the optimization, it still is equipped with the hopper that is fixed in the frame to weigh material cup one side, the lower extreme opening of hopper corresponds the open end setting of material cup, when weighing the material cup upset, the open end of weighing the material cup is located the hopper all the time, and the hopper plays the effect of shielding to the powder, guarantees that the powder falls into in the material cup entirely, avoids holding the interior powder of material cup not enough and influences product quality.
Preferably, the material bearing mechanism further comprises
A supporting seat is arranged on the supporting seat,
The support plates are arranged on the support seats, and at least two material bearing cups are arranged on the support plates at intervals;
the top plate is covered at the upper end of the material bearing cup, and notches which are in one-to-one correspondence with the material bearing cup are formed in the top plate;
The first cylinder is arranged on the supporting plate;
the drawing plate is arranged at the lower end of the supporting plate and can move left and right relative to the supporting plate under the action of the first cylinder so as to shield the lower end of the material bearing cup or open the lower end of the material bearing cup;
the second driving mechanism is arranged on the frame;
The first linear guide rail is arranged on the rack in a left-right extending manner;
The sliding frame is supported on the first linear guide rail and can move left and right along the first linear guide rail under the action of the second driving mechanism;
The second cylinder is arranged on the sliding frame;
The second linear guide rail is arranged on the sliding frame in an extending mode along the front-back direction, and the end portion of the supporting seat is supported on the second linear guide rail and can move back and forth along the second linear guide rail under the action of the second air cylinder.
The material bearing cups are arranged in a plurality of rows and a plurality of columns, after one material bearing cup is filled with materials, the supporting seat moves left and right or back and forth to move the material bearing cup to be filled to the lower part of the material weighing cup, the material bearing cup does not need to be frequently placed manually, and the lower end opening of the material bearing cup is opened by moving the drawing plate, so that powder in the material bearing cup is poured into the die cavity for processing, and the degree of automation is high.
Preferably, the automatic powder weighing machine further comprises a display device for displaying working parameters of the powder weighing machine and a numerical control cabinet arranged below the frame, so that a worker can know working conditions of the powder weighing machine or set the working parameters of the powder weighing machine in real time.
Specifically, as the preference, feeding mechanism includes feed bin, feeding screw and locates the outer third actuating mechanism of feed bin, the feed bin is located the storage vat lower extreme, correspond the material cup of weighing on the feed bin and be provided with the conveying pipe, the lower extreme of conveying pipe is equipped with the discharge gate, feeding screw one end stretches into in the conveying pipe, the other end passes the feed bin is connected with third actuating mechanism. The powder is moved into the feeding pipe by the feeding screw under the action of the third driving mechanism and then falls into the weighing cup.
Preferably, a stirring device for stirring the powder is further arranged in the feeding box, and the stirring device is positioned above the feeding screw so as to stir the powder uniformly and then send out the powder.
Compared with the prior art, the invention has the advantages that: 1. according to the invention, the weighing sensor is arranged at the bottom of the weighing cup, and only needs to bear the weight of the weighing cup and the total weight of the powder required to be quantitatively output each time, and a small-range weighing sensor is selected, so that the weighing precision is improved; the weighing sensor and the feeding mechanism are arranged separately, so that the influence of vibration on the weighing sensor during motor rotation is avoided, and the weighing precision is improved; because the range limitation of the weighing sensor is avoided, more powder can be added in the storage barrel at one time, frequent feeding is not needed, the operation is convenient, and the degree of automation is high; 2. when the turnover mechanism disclosed by the invention is used for weighing materials, the fork piece is separated from the material bearing cup and is not contacted with the material bearing cup, so that the weighing precision is prevented from being influenced; through the matching of the proximity switch and the sensing piece, the fork piece is guaranteed to reset and is weighed after being separated from contact with the material bearing cup, and factors affecting weighing precision are avoided as much as possible; the overturning arm is eccentrically arranged and matched with the fork piece, so that powder residues in the weighing cup are avoided as much as possible, and the influence of powder feeding quantity on the quality of a final product is avoided; 3. according to the material bearing mechanism, a plurality of rows and a plurality of columns of material bearing cups can be arranged, and the material pouring and weighing can be continuously performed under the action of the air cylinder and the linear guide rail, so that the material bearing cups do not need to be frequently placed manually, and the degree of automation is high.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
Fig. 2 is a rear view of the internal structure of fig. 1 (no display device, numerical control cabinet);
FIG. 3 is a rear view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a schematic view of the tilting mechanism and the receiving cup and hopper of FIG. 2;
FIG. 6 is an enlarged view at A of FIG. 5;
FIG. 7 is a schematic structural view of a material receiving mechanism;
fig. 8 to 11 are four state diagrams during the overturning process of the material cup.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1-4, an automatic powder weighing machine comprises a frame 9, a display device 7 arranged on the frame 9, a numerical control cabinet 8 arranged below the frame 9, a storage bucket 1, a feeding mechanism, a weighing assembly and a material bearing mechanism which are arranged on the frame 9 and sequentially arranged from top to bottom, wherein an outer cover is arranged on the outer cover of the frame 9. The display device 7 is used for displaying working parameters of the powder weighing machine, and in the embodiment, the display device 7 is designed as a touch screen; the storage barrel 1 is used for containing powder to be weighed; the feeding mechanism is used for conveying the powder in the storage vat 1 to the weighing cup 31; the weighing assembly comprises a weighing cup 31, a weighing sensor 33 and a turnover mechanism, wherein the weighing sensor 33 is used for weighing powder of the weighing cup 31; the display device 7 and the weighing sensor 33 are electrically connected with the numerical control cabinet 8.
The upper and lower both ends opening of storage vat 1, feeding mechanism's upper end and storage vat 1 intercommunication, the discharge gate 21 that corresponds the setting of title material cup 31 has been seted up to the lower extreme, and weighing sensor 33 locates the bottom of title material cup 31, and material bearing mechanism locates the below of title material cup 31 in order to accept the powder in the title material cup 31. In this embodiment, the side wall of the storage vat 1 is in a funnel shape extending from top to bottom.
As shown in fig. 2-4, the feeding mechanism includes a feeding box 22, a feeding screw 23, a stirring device 26, and a third driving mechanism 24 disposed outside the feeding box 22, where the feeding screw 23 and the stirring device 26 are disposed in the feeding box 22 and the feeding screw 23 is located below the stirring device 26, the feeding box 22 is disposed at the lower end of the storage vat 1, a feeding pipe 25 is disposed on the feeding box 22 corresponding to the weighing cup 31, the discharge hole 21 is disposed at the lower end of the feeding pipe 25, one end of the feeding screw 23 extends into the feeding pipe 25, and the other end of the feeding screw 23 passes through the feeding box 22 and is connected with the third driving mechanism 24.
Wherein the material bearing mechanism comprises a material bearing cup 51 with an opening at the upper end and positioned below the material weighing cup 31, and the material weighing cup 31 can be overturned under the action of the overturning mechanism so as to pour powder into the material bearing cup 51. The material weighing cup 31 is also provided with a hopper 32 fixed on the frame 9, the lower end of the hopper 32 is opened and is arranged corresponding to the opening end of the material bearing cup 51, when the material weighing cup 31 is turned over, the opening end of the material weighing cup 31 is always positioned in the hopper 32, the hopper 32 plays a role in shielding powder, and the powder is ensured to fall into the material bearing cup 51.
As shown in fig. 5 to 6, the turnover mechanism includes a support 61, a first driving mechanism 62, a bracket 63, a turnover arm 64 and a fork 65, and the support 61 is disposed on the frame 9. The first driving mechanism 62 is arranged on the support 61; the bracket 63 is provided on the load cell 33 and is connected to the weighing cup 31. The turning arm 64 is connected to the weighing cup 31 through an integrally formed turning center shaft 641, and the turning center shaft 641 is rotatably connected to the bracket 63.
The fork member 65 is arranged at the output end of the first driving mechanism 62 and can rotate under the action of the first driving mechanism 62, the turning arm 64 is positioned in a fork groove of the fork member 65 and has a gap with the side wall of the fork member 65, and the fork member 65 can push the turning arm 64 to rotate so as to enable the weighing cup 31 to turn over.
In this embodiment, the turning arm 64 is disposed offset from the center of gravity of the weighing cup 31, i.e., the turning arm 64 is disposed on the side of the center of gravity of the weighing cup 31. However, the eccentric design structure makes the weighing cup 31 in an unbalanced state, so that the flange 311 is arranged on the outer side wall of the weighing cup 31 far away from the turning arm 64, and the flange 311 is blocked with the bracket 63 to prevent the weighing cup 31 from being in an unbalanced state, so that the weighing cup 31 turns over, and the clamping and the blocking of the flange 311 and the bracket 63 ensure that the weighing cup 31, the bracket 63 and the weighing sensor 33 do not shake, so that the accuracy of the powder weighing process is ensured.
As shown in fig. 8 to 11, the process of turning over the material pouring cup 31 is as follows: fig. 8 shows an initial state, in which the weighing cup 31 is not turned over, the fork member 65 and the turning arm 64 on the weighing cup 31 are in a non-contact state, no external force acts on the weighing cup 31, and weighing precision is ensured; fig. 9 shows an initial state that the fork member 65 rotates by a certain angle to contact the weighing cup 31 under the drive of the first driving mechanism 62; fig. 10 shows the center of gravity of the weighing cup 31 crossing the critical point of the vertical position above the inversion center axis 641, and continuing to pour powder due to the rotational inertia of the weighing cup 31 after crossing the critical point; fig. 11 shows that the first driving mechanism 62 stops running after reaching a set fixed angle, i.e. the fork member 65 is in a fixed position as shown in the figure, and the rotation inertia of the weighing cup 31 keeps turning over, and the weighing cup 31 can generate a plurality of reciprocating collisions with the fork member 65 due to the reserved gap between the fork member 65 and the turning arm 64 during the powder pouring process, so as to reduce the residue of powder in the weighing cup 31 as much as possible; after the powder pouring is finished, the first driving mechanism 62 and the fork member 65 drive the weighing cup 31 to turn over and reset to the state of fig. 8.
As shown in fig. 5, in order to avoid that the fork member 65 is not reset yet, the weighing cup 31 starts weighing, which affects the weighing precision, the support 61 is provided with a proximity switch 66, the fork member 65 is provided with a sensing piece 67, and the proximity switch 66 is matched with the sensing piece 67 to sense whether the fork member 65 is reset or not. When the proximity switch 66 senses that the fork member 65 is reset, no contact exists between the fork member 65 and the overturning arm 64, and the weighing cup 31 starts weighing; otherwise, the fork member 65 contacts with the overturning arm 64, and the fork member 65 and the weighing cup 31 need to be reset and then weighing is started.
In this embodiment, the fork member 65 is a C-shaped fork, or may be a U-shaped fork or other structures, as long as the fork member can push the turning arm 64 to rotate and keep a gap with the turning arm 64 during weighing, and the C-shaped fork and the sensing piece 67 are integrally formed; the proximity switch 66 and the first driving mechanism 62 are both disposed on the support 61, and the proximity switch 66 is located below the first driving mechanism 62.
As shown in fig. 7, in order to improve the automation degree of the powder weighing machine, the material weighing mechanism may continuously perform material weighing, and the material bearing mechanism further includes a support base 52, where a support plate 53 is disposed on the support base 52, and a plurality of material bearing cups 51 are disposed on the support plate 53 in a plurality of rows and columns at intervals.
In this embodiment, the upper and lower ends of the material bearing cup 51 are both opened, the upper end cover of the material bearing cup 51 is provided with a top plate 54, and the top plate 54 is provided with notches 541 corresponding to the material bearing cups 51 one by one; the support plate 53 is provided with a first cylinder 55, and the lower end of the support plate 53 is provided with a drawing plate 56, and the drawing plate 56 can move left and right relative to the support plate 53 under the action of the first cylinder 55 to shield the lower end of the material bearing cup 51 or open the lower end of the material bearing cup 51.
The receiving cup 51 moves left and right or back and forth to transfer the receiving cup 51, which is not filled, to the lower side of the weighing cup 31 by: the frame 9 is provided with a second drive mechanism 57 and a first linear guide 58 extending in the left-right direction on the frame 9, and a carriage 59 is supported on the first linear guide 58, and the carriage 59 can move left and right along the first linear guide 58 by the second drive mechanism 57.
The sliding frame 59 is provided with a second air cylinder 591 and a second linear guide rail 592 extending in the front-rear direction, and the end of the supporting seat 52 is supported on the second linear guide rail 592 through a sliding block 593 and can move back and forth along the second linear guide rail 592 under the action of the second air cylinder 591 so as to drive the material bearing cup 51 to move back and forth. And when the carriage 59 moves left and right along the first linear guide 58, the support base 52 also moves left and right along with the carriage 59, and the material receiving cup 51 also moves left and right along with the carriage 59.
The plurality of material bearing cups 51 are arranged on the supporting plate 53 in a plurality of rows and columns, and when one material bearing cup 51 is filled with material, the supporting seat 52 moves left and right or forwards and backwards so as to move the material bearing cup 51 to be filled below the material weighing cup 31. And the lower end opening of the material bearing cup 51 is opened by moving the drawing plate 56 so as to pour the powder in the material bearing cup 51 into the die cavity for processing.
In this embodiment, there are two first cylinders 55, and the piston ends of the two first cylinders 55 are disposed in opposite directions to respectively push the support plate 53 to move leftwards or rightwards, however, a cylinder with double piston ends may be used as shown in the second cylinder 591. The support base 52 and the support plate 53 are integrally formed in a channel steel structure.
In this embodiment, the first driving mechanism 62, the second driving mechanism 57, and the third driving mechanism 24 are all motors.
The working process of the automatic powder weighing machine of the embodiment is as follows: firstly, the storage vat 1 is filled with powder, the powder enters the feed box 22 from the storage vat 1, then the third driving mechanism 24 is started to drive the feed screw 23 to rotate, the rotating feed screw 23 conveys the powder into the feed pipe 25, and the powder enters the weighing cup 31 through the discharge hole 21 of the feed pipe 25. In this process, the weighing sensor 33 will immediately transmit the weighing cup 31 and the weight information of the powder therein to the display device 7, and when the weight of the powder reaches the set value, the feeding mechanism stops working. The first drive mechanism 62 drives the C-fork to push the flip arm 64 so that powder in the weighing cup 31 is poured into the receiving cup 51. Subsequently, the supporting seat 52 moves to move the material bearing cup 51 which is not filled to the position below the material weighing cup 31, and the proximity switch 66 senses that the C-shaped fork is reset, and then weighing is continued. The material bearing cup 51 filled with the powder is moved to the die cavity, and the pumping plate 56 is moved to open the opening at the lower end of the material bearing cup 51 so that the powder enters the die cavity for processing, and the process is repeated.
The powder weighing machine is mainly used for weighing and transporting powder, and is suitable for the plastic mold processing industry, the food processing industry, the chemical industry of other proportions and the like.
Claims (7)
1. The utility model provides an automatic powder weighing machine, includes frame (9), locates storage vat (1), feeding mechanism and the weighing module that frame (9) are last and top-down set gradually, its characterized in that: the weighing assembly comprises a weighing cup (31) and a weighing sensor (33), and the weighing sensor (33) is arranged at the bottom of the weighing cup (31) to weigh the powder in the weighing cup (31); the powder weighing machine further comprises a material bearing mechanism, the weighing assembly further comprises a turnover mechanism, the material bearing mechanism comprises a material bearing cup (51) with an opening at the upper end and positioned below the material weighing cup (31), and the material weighing cup (31) can be turned over under the action of the turnover mechanism to pour powder into the material bearing cup (51);
the turnover mechanism comprises
The support (61) is arranged on the frame (9);
A first driving mechanism (62) arranged on the support (61);
the bracket (63) is arranged on the weighing sensor (33);
The turning arm (64) is connected to the weighing cup (31) through a turning central shaft (641), and the turning central shaft (641) is rotatably connected to the bracket (63);
the fork piece (65) is arranged at the output end of the first driving mechanism (62), the overturning arm (64) is positioned in a fork groove of the fork piece (65) and is provided with a gap with the fork piece (65), and the fork piece (65) can rotate under the action of the first driving mechanism (62) and push the overturning arm (64) to rotate relative to the bracket (63) so as to overturn the weighing cup (31);
The overturning arm (64) is arranged deviated from the gravity center line of the weighing cup (31); the outer side wall of the weighing cup (31) far away from the turning arm (64) is convexly provided with a flange (311), and the flange (311) is blocked with the bracket (63) to prevent the weighing cup (31) from turning.
2. The automatic powder weighing machine according to claim 1, wherein: be equipped with proximity switch (66) on support (61), be equipped with on fork piece (65) and respond to piece (67), proximity switch (66) are through the break-make cooperation with sensing piece (67) in order to respond to whether fork piece (65) reset.
3. The automatic powder weighing machine according to claim 1, wherein: the automatic weighing machine is characterized in that a hopper (32) fixed on the frame (9) is further arranged on one side of the weighing cup (31), the lower end of the hopper (32) is opened and corresponds to the opening end of the material bearing cup (51), and when the weighing cup (31) is turned over, the opening end of the weighing cup (31) is always located in the hopper (32).
4. An automatic powder weighing machine according to any one of claims 1 to 3, wherein: the material bearing mechanism further comprises
A supporting seat (52),
The support plates (53) are arranged on the support seats (52), and the material bearing cups (51) are at least two and are arranged on the support plates (53) at intervals;
A top plate (54) which is covered on the material bearing cup (51), wherein the top plate (54) is provided with notches (541) which are in one-to-one correspondence with the material bearing cup (51);
a first cylinder (55) provided on the support plate (53);
The drawing plate (56) is arranged at the lower end of the material bearing cup (51), and the drawing plate (56) is arranged at the lower end of the supporting plate (53) and can move left and right relative to the supporting plate (53) under the action of the first air cylinder (55) so as to shield the lower end of the material bearing cup (51) or open the lower end of the material bearing cup (51);
a second driving mechanism (57) arranged on the frame (9);
a first linear guide rail (58) which is provided on the frame (9) so as to extend in the left-right direction;
A carriage (59) supported by the first linear guide (58) and movable laterally along the first linear guide (58) by the second drive mechanism (57);
a second cylinder (591) provided on the carriage (59);
the second linear guide rail (592) is arranged on the sliding frame (59) in a extending manner along the front-rear direction, and the end part of the supporting seat (52) is supported on the second linear guide rail (592) and can move along the second linear guide rail (592) forwards and backwards under the action of the second air cylinder (591).
5. An automatic powder weighing machine according to any one of claims 1 to 3, wherein: the powder weighing machine further comprises a display device (7) for displaying working parameters of the powder weighing machine and a numerical control cabinet (8) arranged below the frame (9).
6. An automatic powder weighing machine according to any one of claims 1 to 3, wherein: the feeding mechanism comprises a feeding box (22), a feeding screw (23) and a third driving mechanism (24) arranged outside the feeding box (22), wherein the feeding box (22) is arranged at the lower end of the storage vat (1), a feeding pipe (25) is arranged on the feeding box (22) corresponding to a weighing cup (31), a discharge hole (21) is formed in the lower end of the feeding pipe (25), one end of the feeding screw (23) extends into the feeding pipe (25), and the other end of the feeding screw passes through the feeding box (22) to be connected with the third driving mechanism (24).
7. The automatic powder weighing machine according to claim 6, wherein: and a stirring device (26) for stirring the powder is further arranged in the feeding box (22), and the stirring device (26) is positioned above the feeding screw (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145331.4A CN107782427B (en) | 2017-11-17 | 2017-11-17 | Automatic powder weighing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711145331.4A CN107782427B (en) | 2017-11-17 | 2017-11-17 | Automatic powder weighing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107782427A CN107782427A (en) | 2018-03-09 |
| CN107782427B true CN107782427B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711145331.4A Active CN107782427B (en) | 2017-11-17 | 2017-11-17 | Automatic powder weighing machine |
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| CN (1) | CN107782427B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112851102A (en) * | 2021-02-07 | 2021-05-28 | 蓝思智能机器人(长沙)有限公司 | Material adding device, tempering equipment and feeding method |
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