Annular dynamic powder weighing device

Abstract

The invention relates to an annular dynamic powder weighing device which comprises an annular support, four chain wheels are installed at the four corners of the annular support, one chain wheel is connected with a driving motor through a speed reducer, tensioning adjusting assemblies are correspondingly arranged at the bottoms of the other two diagonal chain wheels, and an annular chain is wound and meshed on the four chain wheels. A plurality of movable supporting plate assemblies are connected to the annular chain at equal intervals, a powder barrel is erected on the movable supporting plate assemblies, a plurality of first measurement stations are arranged below one long edge of the annular support, a re-measurement station is arranged below the other long edge of the annular support, and lifting weighing assemblies are arranged at the first measurement stations and the re-measurement station. According to the invention, the cost is reduced, and correlation photoelectricity is cancelled; the positioning precision of the weighing position is high, and the error rate is low; a movement route obstacle removing function is designed; processing is simple, and the manufacturing period is short.

Description

Technical Field

[0001] The present invention relates to the technical field of powder weighing and transportation, and particularly relates to a powder ring dynamic weighing device. Background Art

[0002] Powdery materials are usually transferred into a powder cylinder via an unpacking device and need to be weighed. The existing weighing rail driving motors, photoelectric switches, and lifting cylinders are numerous in number, resulting in a relatively high cost. The weighing position is occasionally inaccurate, there are many control points, the control program is relatively complex, debugging is troublesome, and it needs to be controlled by photoelectric switches, which are easily interfered with, resulting in inaccurate action execution. Summary of the Invention

[0003] The present invention aims to solve the deficiencies of the prior art and provides a powder ring dynamic weighing device.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A powder ring dynamic weighing device includes a ring bracket. Four sprockets are installed at the four corners of the ring bracket. One of the sprockets is connected to a driving motor through a reducer, and tension adjustment components are correspondingly provided at the bottoms of the other two diagonal sprockets. An endless chain is wound around and engaged with the four sprockets. A plurality of moving support plate components are equidistantly connected to the endless chain. A powder cylinder is mounted on the moving support plate components. A plurality of first measurement stations are provided below one long side of the ring bracket, and a re-measurement station is provided below the other long side. Lifting weighing components are provided at both the first measurement station and the re-measurement station.

[0006] The moving support plate component includes a support plate. Two universal balls are installed at the bottom of the support plate. A through hole is formed in the middle of the support plate. A support ring plate is installed at the through hole at the bottom of the support plate. Three arc-shaped avoidance holes are provided on the inner circumference of the support ring plate. A guardrail is provided on the upper surface of the support plate around the through hole. One side of the support plate facing the endless chain is fixedly connected to a connecting plate through bolts, and the connecting plate is fixedly connected to the endless chain.

[0007] A clearance clearing component is fixedly connected to the outer edge of the ring bracket on the front side in the moving direction of the support plate. The clearance clearing component includes a horizontal fixing plate, the outer side of the horizontal fixing plate is a bevel structure, and the bevel structure is connected to a clearance clearing bevel plate.

[0008] The lifting weighing component includes a cylinder bracket fixed on the ring bracket. A lifting cylinder is fixed on the cylinder bracket. A table board is provided at the top of the lifting cylinder. A weighing scale is installed on the table board. A weighing plate is installed on the weighing scale. Three threaded rods are circumferentially penetrated through the weighing plate. Nuts are screwed on the upper and lower surfaces of the weighing plate on the threaded rods. A support block is provided at the top of the threaded rod, and the position of the support block corresponds to the position of the arc-shaped avoidance hole one by one.

[0009] The tension adjusting assembly includes a vertical plate fixed to one side of the annular bracket. A threaded sleeve is provided on the vertical plate. A rotating rod is installed with internal threads in the threaded sleeve. The outer end of the rotating rod is connected to a crank, and the other end is rotatably installed with a top block. A clamping block is fixed to the end of the top block. A U-shaped clamping ring is fixed to the clamping block through a nut. The bottom of the central shaft of the sprocket is rotatably connected to an adjusting column, and the adjusting column is clamped between the clamping block and the U-shaped clamping ring. An adjusting plate is fixed to the top of the adjusting column, and adjusting pins are fixed to the four corners of the adjusting plate. Long circular holes are provided on the annular bracket corresponding to the four adjusting pins, and the adjusting pins are movably installed in the long circular holes.

[0010] The annular bracket is composed of several bracket monomers spliced together. Each bracket monomer includes a bracket plate, a support frame is provided at the bottom of the bracket plate, and an adjusting anchor is provided at the bottom of the support frame.

[0011] The bracket plate has an n-shaped structure.

[0012] The side plates between two adjacent bracket plates are fixedly connected through a connecting plate.

[0013] Chain positioning blocks are installed on the upper surface of the annular bracket in the directions of two long sides and two short sides.

[0014] An inverted T-shaped groove is provided in the chain positioning block, and the annular chain is slidably installed in the inverted T-shaped groove. A counterbore is provided at the bottom of the inverted T-shaped groove, and several counterbore bolt holes are provided in the counterbore. The chain positioning block is fixed to the annular bracket through the counterbore bolts in the counterbore bolt holes.

[0015] The beneficial effects of the present invention are as follows: the present invention reduces costs and eliminates the opposed photoelectric; the positioning accuracy of the weighing position is high and the error rate is low; a function of clearing obstacles in the movement route is designed; the processing is simple and the production cycle is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of one direction of the present invention;

[0017] Figure 2 is a schematic structural diagram of another direction of the present invention;

[0018] Figure 3 is a schematic structural diagram of one direction of the moving pallet assembly;

[0019] Figure 4 is a schematic structural diagram of another direction of the moving pallet assembly;

[0020] Figure 5 is a schematic structural diagram of the lifting weighing assembly;

[0021] Figure 6 is a schematic structural diagram of one direction of the drive motor and the tension adjusting assembly;

[0022] Figure 7Schematic diagram of the structure of the drive motor and the tension adjustment assembly in another direction;

[0023] Figure 8 Schematic diagram of the structure of the chain positioning block;

[0024] In the figure: 1 - annular bracket; 2 - sprocket; 3 - drive motor; 4 - tension adjustment assembly; 5 - annular chain; 6 - moving pallet assembly; 7 - powder cylinder; 8 - lifting weighing assembly; 9 - chain positioning block;

[0025] 11 - support plate; 12 - support frame; 13 - adjusting floor feet; 14 - connecting plate;

[0026] 41 - vertical plate; 42 - threaded sleeve; 43 - rotating rod; 44 - crank; 45 - top block; 46 - clamping block; 47 - U-shaped clamping ring; 48 - adjusting column; 49 - adjusting plate; 410 - adjusting pin; 411 - oblong hole;

[0027] 61 - pallet; 62 - universal ball; 63 - through hole; 64 - support ring plate; 65 - arc relief hole; 66 - guardrail; 67 - connecting plate; 68 - obstacle removal assembly;

[0028] 81 - cylinder bracket; 82 - lifting cylinder; 83 - table board; 84 - weighing scale; 85 - weighing plate; 86 - threaded rod; 87 - nut; 88 - support block;

[0029] 91 - inverted T-shaped groove; 92 - counterbore; 93 - countersunk head bolt;

[0030] The following will be described in detail with reference to the accompanying drawings in conjunction with the embodiments of the present invention. Detailed implementation manners

[0031] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention. In the following paragraphs, the present invention will be described more specifically by way of example with reference to the accompanying drawings. According to the following description, the advantages and features of the present invention will be more clear. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0032] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0035] A powder annular dynamic weighing device, as Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 shown, includes an annular bracket 1, sprockets 2, a drive motor 3, a tension adjustment assembly 4, an annular chain 5, a moving pallet assembly 6, a powder bin 7, a lifting weighing assembly 8, and a chain positioning block 9.

[0036] The annular bracket 1 is composed of a plurality of bracket monomers spliced together to form an annular structure similar to an ellipse, including two long sides and two short sides.

[0037] Each bracket monomer includes a bracket plate 11, the bracket plate 11 is an n-shaped structure, and the side plates of two adjacent bracket plates 11 are fixedly connected by a connecting plate 14.

[0038] A support frame 12 is provided at the bottom of each bracket plate 11, and an adjusting floor bolt 13 is provided at the bottom of the support frame 12 for fine adjustment.

[0039] The form of the support frame 12 is not fixed. It can adopt a single column structure or a structure of two columns plus a support cross beam, and is generally fixed to the connecting plate 14 by bolts.

[0040] Four sprockets 2 are installed at the four corners of the annular bracket 1. The sprockets 2 use a 400w cam divider and are selected according to a tension of 200 kg, and need to be tested and verified.

[0041] One of the sprockets 2 is connected to a drive motor 3 through a reducer, and tension adjustment assemblies 4 are correspondingly provided at the bottoms of the other two diagonal sprockets 2. An annular chain 5 is wound around and engaged with the four sprockets 2.

[0042] As Figure 6 、 Figure 7As shown in the figure, the tension adjustment assembly 4 includes a vertical plate 41 fixed to one side of the annular bracket 1. A threaded sleeve 42 is provided on the vertical plate 41. A rotating rod 43 is installed with internal threads in the threaded sleeve 42. The outer end of the rotating rod 43 is connected to a crank 44 and the other end is rotatably installed with a top block 45. A clamping block 46 is fixed to the end of the top block 45. A U-shaped clamping ring 47 is fixed to the clamping block 46 by a nut. The bottom of the central shaft of the sprocket 2 is rotatably connected to an adjustment column 48. The adjustment column 48 is clamped between the clamping block 46 and the U-shaped clamping ring 47. An adjustment plate 49 is fixed to the top of the adjustment column 48. Adjustment pins 410 are fixed to the four corners of the adjustment plate 49. Long circular holes 411 are provided on the annular bracket 1 corresponding to the four adjustment pins 410. The adjustment pins 410 are movably installed in the long circular holes 411.

[0043] Two sets of tension adjustment assemblies 4 are arranged diagonally, and the tension of the annular chain 5 can be adjusted as needed.

[0044] During adjustment, rotate the crank 44, the rotating rod 43 screws in or out, and then drives the adjustment column 48 clamped between the clamping block 46 and the U-shaped clamping ring 47 to move. The adjustment pins 410 can only move within the angles and distances defined by the long circular holes 411.

[0045] Chain positioning blocks 9 are installed on the upper surface of the annular bracket 1 in the directions of two long sides and two short sides.

[0046] As Figure 8 shown, an inverted T-shaped groove 91 is provided in the chain positioning block 9. The annular chain 5 is slidably installed in the inverted T-shaped groove 91. A counterbore 92 is provided at the bottom of the inverted T-shaped groove 91. A number of counterbore bolt holes are provided in the counterbore 92. The chain positioning block 9 is fixed to the annular bracket 1 by counterbore bolts 93 in the counterbore bolt holes.

[0047] The chain positioning block 9 can ensure the stability of the movement of the annular chain 5.

[0048] A number of moving pallet assemblies 6 are connected to the annular chain 5 at equal intervals. In this embodiment, there are a total of twenty workstations.

[0049] A powder barrel 7 is installed on the moving pallet assembly 6.

[0050] The powder barrel 7 adopts a standard barrel design, with lower cost and a volume of 33L.

[0051] A number of first measurement workstations are provided below one long side of the annular bracket 1 and a remeasurement workstation is provided below the other long side. Lifting weighing assemblies 8 are provided at both the first measurement workstation and the remeasurement workstation.

[0052] As Figure 3 、 Figure 4As shown in the figure, the movable pallet assembly 6 includes a pallet 61. Two universal ball bearings 62 are installed at the bottom of the pallet 61. A through hole 63 is formed in the middle of the pallet 61. A support ring plate 64 is installed at the bottom of the pallet 61 at the position of the through hole 63. Three arc-shaped avoidance holes 65 are provided on the inner circumference of the support ring plate 64. A guardrail 66 is provided on the upper surface of the pallet 61 around the through hole 63. One side of the pallet 61 facing the endless chain 5 is fixed with a connecting plate 67 by bolts, and the connecting plate 67 is connected and fixed to the endless chain 5.

[0053] Supported by the universal ball bearings 62, the pallet 61 moves driven by the endless chain 5, and the driving motor 3 drives it to move one station at a time.

[0054] During the movement, the guardrail 66 can prevent the powder barrel 7 from tipping over.

[0055] On the front side of the moving direction of the pallet 61, a debris clearing assembly 68 is fixed by bolts against the outer edge of the annular support 1.

[0056] The debris clearing assembly 68 includes a horizontal fixing plate. The outer side of the horizontal fixing plate is a bevel structure, and the bevel structure is connected with a debris clearing bevel plate, which can scrape off the sundries on the annular support 1 during the movement to avoid affecting the movement of the universal ball bearings 62.

[0057] As Figure 5 shown in the figure, the lifting weighing assembly 8 includes a cylinder support 81 fixed on the annular support 1. A lifting cylinder 82 is fixed on the cylinder support 81. A table board 83 is provided at the top of the lifting cylinder 82. A weighing scale 84 is installed on the table board 83. A weighing plate 85 is installed on the weighing scale 84. Three threaded rods 86 are circumferentially penetrated through the weighing plate 85. Nuts 87 are screwed tightly on the upper and lower surfaces of the weighing plate 85 on the threaded rods 86. A support block 88 is provided at the top of the threaded rod 86, and the position of the support block 88 is set corresponding to the position of the arc-shaped avoidance hole 65 one by one.

[0058] Avoidance holes are also provided on the annular support 1 corresponding to the moving positions of the support blocks 88.

[0059] In the present invention, driven by the endless chain 5, the powder barrel 7 first moves to receive materials under the unpacking hopper, and then moves for on-line weighing. Eight first-test stations are provided under the first side of a long side of the annular support 1, and eight different materials can be first-tested. When the corresponding material moves to the corresponding first-test station, the corresponding lifting weighing assembly 8 starts to operate. The lifting cylinder 82 starts to rise. The support block 88 sequentially passes through the avoidance holes and the arc-shaped avoidance holes 65 on the annular support 1 and then contacts the bottom of the powder barrel 7 and rises. At this time, the weighing scale 84 can weigh the material. After the weighing is completed, it resets. The movable pallet assembly 6 drives the powder barrel 7 to move to the re-test station for re-testing, ensuring the accuracy of the measurement.

[0060] The present invention reduces costs, eliminates opposed photoelectric sensors; has high positioning accuracy at the weighing position and low error rate; designs a function for clearing obstacles in the movement route; is simple to process and has a short production cycle.

[0061] The present invention has been described exemplarily in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A powder annular dynamic weighing device, characterized in that It includes an annular bracket (1). Four sprockets (2) are installed at the four corners of the annular bracket (1). One of the sprockets (2) is connected to a driving motor (3) through a speed reducer, and tensioning and adjusting components (4) are correspondingly provided at the bottoms of the other two diagonal sprockets (2). An endless chain (5) is wound around and engaged with the four sprockets (2). A number of moving pallet components (6) are equidistantly connected to the endless chain (5). A powder cylinder (7) is mounted on the moving pallet component (6). A number of first measurement stations are provided below one long side of the annular bracket (1), and a re-measurement station is provided below the other long side. Lifting and weighing components (8) are provided at both the first measurement station and the re-measurement station.

2. The powder annular dynamic weighing device according to claim 1, wherein The moving pallet component (6) includes a pallet (61). Two universal balls (62) are installed at the bottom of the pallet (61). A through hole (63) is formed in the middle of the pallet (61). A support ring plate (64) is installed at the bottom of the pallet (61) at the through hole (63). Three arc-shaped avoidance holes (65) are provided on the inner circumference of the support ring plate (64). A guardrail (66) is provided on the upper surface of the pallet (61) around the through hole (63). One side of the pallet (61) facing the endless chain (5) is fixedly connected to a connecting plate (67) by bolts, and the connecting plate (67) is fixedly connected to the endless chain (5).

3. A powder annular dynamic weighing device according to claim 2, characterized in that, A clearance clearing component (68) is fixedly connected to the outer edge of the annular bracket (1) by bolts on the front side in the moving direction of the pallet (61). The clearance clearing component (68) includes a horizontal fixing plate, the outer side of which is a bevel structure and the bevel structure is connected to a clearance clearing bevel plate.

4. A powder annular dynamic weighing device according to claim 3, characterized in that, The lifting and weighing component (8) includes a cylinder bracket (81) fixed on the annular bracket (1). A lifting cylinder (82) is fixed on the cylinder bracket (81). A table board (83) is provided at the top of the lifting cylinder (82). A weighing scale (84) is installed on the table board (83). A weighing plate (85) is installed on the weighing scale (84). Three threaded rods (86) are circumferentially penetrated through the weighing plate (85). Nuts (87) are screwed tightly on both the upper and lower surfaces of the weighing plate (85) on the threaded rods (86). A support block (88) is provided at the top of the threaded rod (86), and the position of the support block (88) is correspondingly set with the position of the arc-shaped avoidance hole (65).

5. A powder annular dynamic weighing device according to claim 1, characterized in that, The tensioning and adjusting component (4) includes a vertical plate (41) fixed on one side of the annular bracket (1). A threaded sleeve (42) is provided on the vertical plate (41). A rotating rod (43) is installed with internal threads in the threaded sleeve (42). A crank (44) is connected to the outer end of the rotating rod (43), and a top block (45) is rotatably installed at the other end. A clamping block (46) is fixed at the end of the top block (45). A U-shaped clamping ring (47) is fixed on the clamping block (46) by a nut. An adjusting column (48) is rotatably connected to the bottom of the central axis of the sprocket (2), and the adjusting column (48) is clamped between the clamping block (46) and the U-shaped clamping ring (47). An adjusting plate (49) is fixed at the top of the adjusting column (48). Adjusting pins (410) are fixed at the four corners of the adjusting plate (49). Long circular holes (411) are provided on the annular bracket (1) corresponding to the four adjusting pins (410), and the adjusting pins (410) are movably installed in the long circular holes (411).

6. The powder annular dynamic weighing device according to claim 1, wherein The annular support (1) is composed of several support monomers spliced together. Each support monomer includes a support plate (11). A support frame (12) is provided at the bottom of the support plate (11), and an adjusting anchor (13) is provided at the bottom of the support frame (12).

7. The powder annular dynamic weighing device according to claim 6, characterized in that, The support plate (11) is of an n-shaped structure.

8. A powder annular dynamic weighing device according to claim 1, characterized in that, The side plates of two adjacent support plates (11) are fixedly connected through a connecting plate (14).

9. The powder annular dynamic weighing device according to claim 8, characterized in that, Chain positioning blocks (9) are installed on the upper surface of the annular support (1) in the directions of two long sides and two short sides.

10. The powder annular dynamic weighing device according to claim 9, characterized in that, An inverted T-shaped groove (91) is provided in the chain positioning block (9). The annular chain (5) is slidably installed in the inverted T-shaped groove (91). A countersunk head groove (92) is provided at the bottom of the inverted T-shaped groove (91). A number of countersunk head bolt holes are provided in the countersunk head groove (92). The chain positioning block (9) is fixed on the annular support (1) through the countersunk head bolts (93) in the countersunk head bolt holes.

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