CN213274500U

CN213274500U - Automatic static checkweigher

Info

Publication number: CN213274500U
Application number: CN202022476268.6U
Authority: CN
Inventors: 刘久明; 汤小牛; 杨永龙
Original assignee: Shandong Setaq Instruments Co ltd
Current assignee: Shandong Setaq Instruments Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-05-25
Anticipated expiration: 2030-10-31

Abstract

The utility model provides an automatic static checkweigher, include weighing unit and move the thing unit, weighing unit includes two piece at least top edges riser that are parallel to each other, weighing sensor and frame, the riser passes through the transition piece and is connected with weighing sensor, weighing sensor is connected with the frame, it includes at least one belt and corresponds a pair of band pulley of complex with the belt to move the thing unit, the transmission shaft, a drive arrangement, the belt frame, belt upper portion surface is parallel with the top edge of riser, correspond a belt between per two risers, the belt sets up between two risers but with two risers contactless, the upper surface of belt is less than the top edge of riser, equidistant dog has been arranged on the belt surface, dog and two risers contactless. The height position of the upper edge of the stop block on the upper surface of the belt is greater than the height position of the upper edge of the vertical plate plus the thickness of the object to be weighed, and the distance between the adjacent stop blocks is greater than the diagonal length of the object to be weighed.

Description

Automatic static checkweigher

Technical Field

The utility model relates to an automatic static checkweigher especially relates to the checkweigher that carries out online automatic static weighing to rectangle pouch granule packing article.

Background

The checkweigher that rectangular pouch packing production line adopted at present such as food, medicine is mostly for belt on-line checkweigher, promptly, installs weighing sensor under the band conveyer, when being weighed the object and passing through from the belt, weighing sensor weighs the object on line to carry out the defective work with this weight value and reject. There are also other types of checkweighers that mount object moving mechanisms on the load cell, because the object moving mechanisms occupy most of the range of the load cell, so the load cell has a large range of choice, and the precision is low: for example, the object moving mechanism adopts a motor to drive a hopper rotating along with a motor shaft, the hopper opening is upwards connected with materials and weighed at the beginning, after weighing is completed, the hopper rotates to enable the hopper opening to downwards pour out the objects, and then sorting or removing is carried out subsequently.

The rectangular small bag packaging production line is used for on-line weight detection, and other automatic static weight detection scales are also arranged.

In the prior art, if only a weighing platform is arranged on a weighing sensor, an object moving mechanism is arranged above the weighing platform, so that materials cannot fall down from the weighing platform, the materials must be moved onto the weighing platform by a mechanism to be weighed and then moved away, the moving mechanism is complex in structure and high in cost, and the rectangular packaging bag which is thin and is not convenient to weigh or move and lies horizontally is inconvenient to weigh, and the weighing sensor is easily scratched by the moving mechanism.

In addition, the situation of unqualified material scattering in heat sealing and the situation of material scattering in dislocation of the cutting position of the packaging bag can occur in the production of a plurality of particle packaging machines. When the condition of spilling the material appears, the granule in bulk can be detained on the weighing platform, and the switch board can't judge immediately and deal with to influence the weighing accuracy of follow-up many bags of wrapping bags.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic static checkweigher.

The technical measures adopted by the utility model are as follows: the utility model provides an automatic static checkweigher, include weighing unit and move the thing unit, weighing unit includes two piece at least top edges riser that are parallel to each other, weighing sensor and frame, the riser passes through the transition piece and is connected with weighing sensor, weighing sensor is connected with the frame, weighing sensor is connected with the switch board electricity, it includes at least one belt and corresponds a pair of band pulley of complex with the belt to move the thing unit, the transmission shaft, a driving device, the belt frame, belt upper portion surface is parallel with the top edge of riser, correspond a belt between per two risers, the belt sets up between two risers but with two riser contactless, the upper surface of belt is less than the top edge of riser, equidistant dog has been arranged on the belt surface, dog and two riser contactless.

The concrete characteristics of this scheme still have, the top edge high position of the dog of the upper surface of belt is greater than the top edge high position of riser and is added the thickness of being weighed the object, and the interval between the adjacent dog is greater than the diagonal length of being weighed the object.

The belt is a synchronous toothed belt, the belt wheel is a synchronous toothed belt wheel, the synchronous toothed belt is meshed with the synchronous toothed belt wheel through teeth on the inner surface, the synchronous toothed belt wheel is fixed on a transmission shaft, and the transmission shaft is driven by a driving device and matched with the belt frame.

The weighing unit further comprises a transition vertical plate and a cone top shunt part, the vertical plate is fixedly connected with the transition vertical plate, the transition vertical plate is fixedly connected with the cone top shunt part, and the cone top shunt part is fixedly connected with the weighing sensor.

The length of the upper edge of the vertical plate is larger than the diagonal length of the object to be weighed.

A long strip-shaped discharging supporting plate is correspondingly arranged on the right side of a vertical plate of the weighing unit, the length direction of the discharging supporting plate is parallel to the upper edge of the vertical plate, the upper surface of the discharging supporting plate is slightly lower than the upper edge of the vertical plate, and the discharging supporting plate and a belt are alternately arranged; the length of the discharging supporting plate is less than the sum of the distance from the central line of the transmission shaft to the light plane of the front end light curtain and half of the shortest dimension of the weighed object, and the belt and the stop block are not in contact with the discharging supporting plate.

An inclined blanking groove is arranged at the left side of the object moving unit, a blanking light curtain irradiated in the horizontal direction is uniformly arranged at the outlet of the blanking groove, a rear end light curtain irradiated in the horizontal direction and uniformly arranged above and below a plurality of light beams is arranged at the material inlet of the weighing unit, a front end light curtain irradiated in the horizontal direction and uniformly arranged above and below a plurality of light beams is arranged at the material outlet of the weighing unit, the blanking light curtain, the rear end light curtain and the front end light curtain are connected with the frame, the distance between the rear end light curtain and the front end light curtain is larger than the diagonal length of the object to be weighed and smaller than the distance between adjacent surfaces of adjacent blocks, the distance between the blanking light curtain and the rear end light curtain is larger than the diagonal length of the object to be weighed, the rear end light curtain and the front end light curtain respectively correspond to two ends close to the upper edge of the vertical plate, when weighing, the belt is moved to enable the inner side area of the adjacent blocks to cover the area between, it is also contemplated that the upper edge of the riser at least exceeds the length of the diagonal dimension of the object being weighed.

The left side of a vertical plate of the weighing unit is correspondingly provided with a long strip-shaped feeding supporting plate, the length direction of the feeding supporting plate is parallel to the upper edge of the vertical plate, the feeding supporting plate and a belt are alternately arranged, the upper surface of the feeding supporting plate is slightly higher than the upper edge of the vertical plate, a discharging groove is formed in the upper portion of the left side of the feeding supporting plate, and the upper edge of a stop block on the upper surface of the belt is higher than the upper surface of the feeding supporting plate plus the thickness of a weighed object; the belt and the stop block are not contacted with the feeding supporting plate.

The right side of the transmission shaft is butted with a belt to be rejected, and the air nozzle is arranged on a rack for rejecting the belt.

Also, the upper part of the weighing unit is provided with a blanking groove, the outlet of the blanking groove is provided with a plurality of blanking light curtains which are horizontally and uniformly distributed and irradiate in the horizontal direction, and the blanking light curtains are connected with the frame.

The utility model discloses there is following beneficial effect: 1. the weighing platform is made of a plurality of vertical plates, the belt with the stop blocks at equal intervals is arranged between the vertical plates to move the weighed object, the weight of the object moving mechanism does not occupy the measuring range of the weighing sensor, only the vertical plates and the weighed object are arranged on the weighing sensor, the weighing sensor with small measuring range can be selected, and the weighing precision is very high.

2. Adopt the parallel riser of polylith, let the top edge of riser do the weighing platform contact surface, adopt conical vertex reposition of redundant personnel piece, stopped unrestrained granule material and detained the weighing platform and influence the precision of weighing.

3. When weighing, the object of being weighed is located the top edge of riser, and rear end light curtain and front end light curtain correspond respectively at the both ends of the top edge of riser and in the inboard of the dog that corresponds to whether the dog is touched to the object of being weighed in the detection, have ensured reliable and stable precision of weighing.

Drawings

Fig. 1 is a schematic perspective view of the present invention. Fig. 2 is a schematic top view of the present invention. Fig. 3 is a schematic view of the weighing platform of the present invention. Fig. 4 is a left side view of fig. 3. Fig. 5 is a schematic sectional view taken along line a-a of fig. 4. Fig. 6 is a schematic diagram of the combination of the weighing unit and the transferring unit.

In the figure, 3-weighed objects, 4-racks, 5-rejection belts, 6-control cabinets, 11-edge vertical plates, 12-edge flat plates, 13-vertical plates, 14-transition vertical plates, 15-cone top shunting pieces, 16 protective shells, 17-weighing sensors, 20-belts, 21-stop blocks, 22-belt wheels, 23-transmission shafts, 24-belt racks, 25-blanking troughs, 26-driving devices, 27-discharging supporting plates, 28-feeding supporting plates, 41-positioning columns, 42-blanking light curtains, 43-rear light curtains, 44-front light curtains, 51-air nozzles and 52-waste baskets.

Detailed Description

Example 1: referring to fig. 1-6, an automatic static checkweigher, it includes weighing unit, move thing unit and switch board 6, weighing unit includes at least two blocks of riser 13 that the top edge is parallel to each other, weighing sensor 17 and frame 4, weighing unit still includes transition riser 14 and awl top reposition of redundant personnel piece 15, riser 13 is connected with weighing sensor 17 through the transition piece, riser 13 is connected with transition riser 14, transition riser 14 is connected with awl top reposition of redundant personnel piece 15, awl top reposition of redundant personnel piece 15 is connected with weighing sensor 17, awl top reposition of redundant personnel piece 15 shunts scattered granule to the bottom of convenient clearance, weighing sensor 17's outside is surrounded there is protective housing 16, weighing sensor 17 is connected with frame 4, riser 13 top edge length is greater than the diagonal length of weighed object 3. The cone top splitter 15 comprises an inverted V-shaped cover plate and vertical plates located at two ends of the cover plate.

The object moving unit comprises at least one belt 20, a pair of belt wheels 22 correspondingly matched with the belt 20, a transmission shaft 23, a driving device 26 and a belt frame 24, the upper surface of the belt 20 is parallel to the upper edges of the vertical plates 13, one belt 20 corresponds to each two vertical plates 13, the belt 20 is arranged between the two vertical plates 13 but is not contacted with the two vertical plates 13, the upper surface of the belt 20 is lower than the upper edges of the vertical plates 13, stoppers 21 with equal intervals are arranged on the outer surface of the belt 20, the stoppers 21 are not contacted with the two vertical plates 13, the height position of the upper edge of the stopper 21 on the upper surface of the belt 20 is larger than the height position of the upper edge of the vertical plate 13 plus the thickness of the object 3 to be weighed, the interval between the adjacent stoppers 21 is larger than the diagonal length of the object 3 to be weighed, the belt is a synchronous toothed belt, the belt wheel is a synchronous toothed belt wheel, and the synchronous, the synchronous cog belt pulley is fixed on a transmission shaft, and the transmission shaft is driven by a driving device and matched with the belt frame. The belt frame 24 is matched with the frame 4 through the positioning columns 41, and the stop blocks 21 correspond to two ends of the upper edge of the vertical plate 13 during weighing.

A long strip-shaped discharging supporting plate 27 is correspondingly arranged on the right side of the vertical plate 13 of the weighing unit, the length direction of the discharging supporting plate 27 is parallel to the upper edge of the vertical plate 13, the upper surface of the discharging supporting plate 27 is slightly lower than the upper edge of the vertical plate 13, the object 3 to be weighed is pushed by the stop 21 until the upper surface of the discharging supporting plate 27 is pushed out, and the discharging supporting plate 27 and the belt 20 are alternately arranged; the length of the discharging supporting plate 27 is less than the sum of the distance from the central line of the transmission shaft 23 to the light plane of the front light curtain 44 and half of the shortest dimension of the object 3 to be weighed, and the belt 20 and the stop 21 are not in contact with the discharging supporting plate 27.

The weighing sensor 17 and the driving device 26 are electrically connected with the control cabinet 6.

The object 3 to be weighed enters the automatic static checkweigher from the left side, the left side of the object moving unit is provided with an inclined blanking groove 25, the outlet of the blanking groove 25 is provided with a blanking light curtain 42 with a plurality of light rays which are uniformly distributed up and down and irradiated in the horizontal direction, the material inlet of the weighing unit is provided with a rear light curtain 43 with a plurality of light rays which are uniformly distributed up and down and irradiated in the horizontal direction, the material outlet of the weighing unit is provided with a front light curtain 44 with a plurality of light rays which are uniformly distributed up and down and irradiated in the horizontal direction, the blanking light curtain 42, the rear light curtain 43 and the front light curtain 44 are connected with the frame 4, the distance between the rear light curtain 43 and the front light curtain 44 is larger than the diagonal length of the object 3 to be weighed and smaller than the distance between the adjacent surfaces of the adjacent stop blocks 21, the distance between the blanking light curtain 42 and the rear light curtain 43 is larger than the diagonal length of the object 30 to be weighed, the rear light curtain 43 and, during weighing, the belt 20 is moved to enable the inner side area of the adjacent stop block 21 to cover the area between the rear end light curtain 43 and the front end light curtain 44 and also cover the length of the upper edge of the vertical plate 13 at least exceeding the diagonal size of the object to be weighed 30, the belt 20 stops moving, and the rear end light curtain 43 and the front end light curtain 44 detect whether the object to be weighed 3 touches the stop block 21 or not so as to avoid affecting the weighing precision; if the rear end light curtain 43 or the front end light curtain 44 detects the object 3 to be weighed, the belt 20 is slightly rotated forward or backward to separate the stopper 21 from the object 3 to be weighed.

The light curtain device is composed of a row of linearly arranged and equidistant photoelectric emission tubes and a corresponding row of linearly arranged and equidistant photoelectric receiving tubes, the light curtain device is electrically connected with the control cabinet 6, the light curtain is composed of a plurality of beams of light which are arranged on the same plane at equal intervals in parallel, when an object blocks at least one beam of light, the luminous flux of the light curtain device is reduced, and the control cabinet 6 sends out a related signal indicating that the object blocks light.

A strip-shaped feeding supporting plate 28 corresponds to the left side of a vertical plate 13 of the weighing unit, the length direction of the feeding supporting plate 28 is parallel to the upper edge of the vertical plate 13, the feeding supporting plate 28 and a belt 20 are alternately arranged, the upper surface of the feeding supporting plate 28 is slightly higher than the upper edge of the vertical plate 13, a blanking groove 25 is arranged at the upper part of the left side of the feeding supporting plate 28, a weighed object 3 slides down from the blanking groove 25 and stops on the upper surface of the feeding supporting plate 28, a stop dog 21 arranged on the belt 20 beside the feeding supporting plate 28 pushes the upper edge of the vertical plate 13, and the position of the upper edge of the stop dog 21 on the upper surface of the belt 20 is higher than the position of the upper surface of the feeding supporting plate 28 and the thickness of the weighed object 3; the belt 20 and the stopper 21 are not in contact with the feeding pallet 28.

In order to prevent the weighed object 3 from moving out of the vertical plate 13 from the side by the stop 21, edge vertical plates 11 which can play a role of guiding are arranged on two sides of the vertical plate 13; the vertical plate 13 can also be connected with the edge vertical plate 11 through the edge flat plate 12, so that the weighed object 3 is prevented from being moved into a gap between the vertical plate 13 and the edge vertical plate 11 by the stop 21.

The right side of the transmission shaft 23 is butted with the rejecting belt 5, the air nozzle 51 is installed on the rack 4, and the weighed object 3 with unqualified weight is blown into the waste basket 52 by the air nozzle 51 when moving on the rejecting belt 5.

Example 2: an automatic static checkweigher is shown in fig. 1-6, the same parts as the embodiment 1 are not repeated, but the difference is that a weighed object 3 does not directly slide into a weighing unit through a blanking groove 25 from the left side of a moving unit or slide into a loading supporting plate 28 through the blanking groove 25 and then move into the weighing unit, instead, a blanking groove is arranged at the upper part of the weighing unit, a plurality of blanking light curtains which are horizontally and uniformly arranged and irradiate in the horizontal direction are arranged at the outlet of the blanking groove, and the blanking light curtains are connected with a frame 4; the object 3 to be weighed directly falls onto the vertical plate 13 from the charging chute, and is moved away by the object moving unit after weighing is finished.

Claims

1. The utility model provides an automatic static checkweigher, include weighing unit and move the thing unit, characterized by weighing unit includes two piece at least top edges riser that are parallel to each other, weighing sensor and frame, the riser passes through the transition piece and is connected with weighing sensor, weighing sensor is connected with the frame, it includes at least one belt and corresponds a pair of band pulley of complex with the belt to move the thing unit, the transmission shaft, a drive arrangement, the belt frame, belt upper portion surface is parallel with the top edge of riser, correspond a belt between per two risers, the belt sets up between two risers but with two risers contactless, the upper surface of belt is less than the top edge of riser, equidistant dog has been arranged on the belt surface, dog and two risers contactless.

2. The automatic static checkweigher of claim 1 wherein the belt is a timing belt and the pulleys are timing belt pulleys, the timing belt being engaged with the timing belt pulleys by teeth on an inner surface thereof, the timing belt pulleys being fixed to a drive shaft, the drive shaft being driven by the drive means and engaging the belt holders.

3. The automatic static checkweigher of claim 1 wherein the weighing cell further comprises a transition riser and a cone top splitter, the riser fixedly connected to the transition riser, the transition riser fixedly connected to the cone top splitter, the cone top splitter fixedly connected to the weighing cell.

4. The automated static checkweigher of claim 1 wherein the length of the upper edge of the riser is greater than the diagonal length of the object being weighed.

5. The automatic static checkweigher of claim 1, wherein a strip-shaped discharging support plate is correspondingly arranged at the right side of the vertical plate of the weighing unit, the length direction of the discharging support plate is parallel to the upper edge of the vertical plate, the upper surface of the discharging support plate is slightly lower than the upper edge of the vertical plate, and the discharging support plate and the belt are alternately arranged; the length of the discharging supporting plate is less than the sum of the distance from the central line of the transmission shaft to the light plane of the front end light curtain and half of the shortest dimension of the weighed object, and the belt and the stop block are not in contact with the discharging supporting plate.

6. The automatic static checkweigher as claimed in claim 1, wherein an inclined discharge chute is provided at the left side of the transfer unit, a plurality of discharge light curtains which are uniformly arranged up and down and horizontally irradiate are provided at the outlet of the discharge chute, a plurality of rear light curtains which are uniformly arranged up and down and horizontally irradiate are provided at the material inlet of the weighing unit, a plurality of front light curtains which are uniformly arranged up and down and horizontally irradiate are provided at the material outlet of the weighing unit, the discharge light curtains, the rear light curtains and the front light curtains are all connected to the frame, the distance between the rear light curtains and the front light curtains is larger than the diagonal length of the object to be weighed and smaller than the distance between the adjacent surfaces of the adjacent stoppers, the distance between the discharge light curtains and the rear light curtains is larger than the diagonal length of the object to be weighed, the rear light curtains and the front light curtains are respectively corresponding to both ends near the upper edge of the vertical plate, when weighing, the belt is moved to enable the inner side area of the adjacent stop block to cover the area between the rear end light curtain and the front end light curtain and also cover the length of the upper edge of the vertical plate at least exceeding the diagonal size of the object to be weighed.

7. The automatic static checkweigher according to claim 1, wherein a strip-shaped feeding support plate is correspondingly arranged on the left side of a vertical plate of the weighing unit, the length direction of the feeding support plate is parallel to the upper edge of the vertical plate, the feeding support plate and the belt are alternately arranged, the upper surface of the feeding support plate is slightly higher than the upper edge of the vertical plate, the blanking groove is arranged on the upper left portion of the feeding support plate, and the upper edge position of a stop block on the upper surface of the belt is higher than the upper surface position of the feeding support plate plus the thickness of the object to be weighed; the belt and the stop block are not contacted with the feeding supporting plate.

8. The automatic static checkweigher of claim 1 wherein the right side of the drive shaft is butted against a stripper belt and the air tap is mounted on a frame of the stripper belt.

9. The automatic static checkweigher as claimed in claim 1, wherein a chute is provided at an upper portion of the weighing unit, a plurality of blanking light curtains which are horizontally uniformly arranged and horizontally irradiate are provided at an outlet of the chute, and the blanking light curtains are connected to the frame.

10. The automatic static checkweigher of claim 1, wherein the upper edge height of the stoppers of the upper surface of the belt is greater than the upper edge height of the standing plate plus the thickness of the object to be weighed, and the interval between the adjacent stoppers is greater than the diagonal length of the object to be weighed.