Double-weighing device with lifting and rotating functions

Abstract

The utility model discloses a double scale weighing device with lift rotary function relates to weighing equipment technical field, workstation, its upper wall fixed mounting has positioning frame and transmission case, the dynamic belt scale is fixedly installed in the positioning frame, the transmission case is located dynamic belt scale below, the static belt scale is slidably connected along height in the positioning frame, the dynamic belt scale and static belt scale are adjacent, through the electric push rod drive adjusting wedge and adjusting wheel, realize the stable lifting of static belt scale, solved the problem that the material in the existing double scale weighing device exists height difference, produces instantaneous impact when from dynamic conveying transition to static weighing, thereby influence static weighing precision, the utility model makes dynamic belt scale with static belt scale can keep the same height when material transition, forms continuous conveying plane, avoids the force change that material produces because of the difference or impact, and the precision stability of static weighing is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of weighing equipment technology, specifically to a dual-scale weighing device with lifting and rotating functions. Background Technology

[0002] In the processing lines for granular materials such as rice and animal feed, weighing is a crucial step in ensuring the product's net content meets standards. With the increasing level of automated production, higher demands are being placed on the speed and accuracy of weighing equipment. In existing weighing equipment, such as the static weighing belt scale mechanism disclosed in CN2086894U, the device sequentially places continuously conveyed materials into two weighing bodies through a material diversion mechanism. Static weighing is performed after the weighing bodies and materials stabilize, with the two weighing bodies weighing alternately, overcoming the problem of low dynamic weighing accuracy of traditional belt scales. However, this device still has the following shortcomings: 1. The material in this device needs to fall directly into the weighing body through the diversion mechanism. There is a certain height difference during the material transition. The initial impact before weighing will affect the stability and accuracy of static weighing.

[0003] 2. The two scales are in relatively fixed positions, making it impossible to adjust the discharge angle and height according to the characteristics of the material or the layout of subsequent processes, resulting in poor adaptability.

[0004] 3. The scale body lacks a flexible lifting and rotation adjustment mechanism at the bottom, making it difficult to adapt to the compact layout requirements of different production lines. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a dual-scale weighing device with lifting and rotating functions, which solves the technical problems of existing devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A dual-scale weighing device with lifting and rotating functions includes a worktable with a positioning frame and a transmission box fixedly installed on its upper wall. A dynamic belt scale is fixedly installed inside the positioning frame, and the transmission box is located below the dynamic belt scale. A static belt scale is slidably connected to the positioning frame along its height. The dynamic and static belt scales are adjacent to each other. The device also includes: a rotating drum disposed below the static belt scale, with a drive structure for driving the static belt scale to rotate fixedly installed inside the rotating drum; an adjusting platform fixedly installed on the lower wall of the rotating drum, with an adjusting wedge fixedly installed on the lower wall of the adjusting platform; an electric push rod fixedly installed on the side wall of the transmission box, driving along the direction of the adjusting wedge; and a drive frame fixedly installed at the drive end of the electric push rod, with an adjusting wheel rotatably connected inside the drive frame to adapt to the rolling motion of the adjusting wedge. Limiting wheels are rotatably connected to both side walls of the drive frame, and a limiting guide rail adapted to the rolling motion of the limiting wheel is fixedly installed on the upper wall of the worktable.

[0007] Preferably, the drive structure includes: a limiting rotating ring, which has a bearing inside and is fixedly installed on the upper end face of the rotating drum; a bevel gear seat ring is fixedly installed on the inner ring of the lower wall of the turntable, and a T-shaped slide is fixedly installed on the outer ring of the lower wall; the T-shaped slide is embedded in the bearing inside the limiting rotating ring and is adapted to roll with the limiting rotating ring; and a drive motor is fixedly installed on the bottom wall of the rotating drum, and the drive end of the drive motor is fixedly installed with a drive bevel gear that meshes with the bevel gear seat ring.

[0008] Preferably, the upper wall of the adjustment platform has two guide holes axially along the sliding direction of the static belt scale; the limiting guide rail is U-shaped, with its open end facing the transmission box, and two guide rods that slide and adapt to the guide holes are fixedly installed on the upper wall of the closed end of the limiting guide rail, and a contact sensor is fixedly installed on the top of the guide rod.

[0009] Preferably, a limiting slide is fixedly installed between the positioning frame and the worktable, guide blocks adapted to the sliding of the limiting slide are fixedly installed on both sides of the adjusting table, a load-bearing ring is fixedly installed on the guide rod, and a load-bearing platform is fixedly installed inside the limiting slide, with the load-bearing platform and the load-bearing ring having the same height.

[0010] Preferably, when the electric actuator is retracted to its minimum, the adjusting platform is supported by the load-bearing platform and the load-bearing ring, at which point the dynamic belt scale and the static belt scale have the same height.

[0011] Preferably, a number of structural ribs are fixedly installed between the rotating drum and the adjusting table.

[0012] This utility model provides a dual-scale weighing device with lifting and rotating functions, which has the following beneficial effects: 1. By driving the adjusting wedge and adjusting wheel with an electric actuator, the static belt scale is raised and lowered smoothly, solving the problem in existing dual-scale weighing devices where the height difference and instantaneous impact occur when materials transition from dynamic conveying to static weighing, thus affecting the accuracy of static weighing. This utility model enables the dynamic belt scale and the static belt scale to maintain the same height during material transition, forming a continuous conveying plane, avoiding force changes caused by material drop or impact, and significantly improving the accuracy and stability of static weighing.

[0013] 2. By integrating the inclined plane lifting mechanism and the bevel gear rotating mechanism, the problem of the inflexible adjustment of the height and discharge angle of the static belt scale in existing weighing devices, which makes it difficult to adapt to the layout requirements of different production lines, is solved. This utility model can adjust the relative height of the static belt scale and the dynamic belt scale at any time according to the material characteristics or the layout requirements of the production line. At the same time, through the drive motor and bevel gear transmission, the static belt scale can rotate arbitrarily within a 360° range, realizing stepless adjustment of the discharge direction. It can adapt to different downstream processes without stopping the machine, which is conducive to the compact layout of the production line.

[0014] 3. By using the rolling contact between the adjusting wheel and the adjusting wedge, combined with the rolling guidance of the limiting wheel and the limiting guide rail, and the common support structure of the load-bearing platform and the load-bearing ring, the problems of large sliding friction, unstable operation, and easy fatigue failure of the electric push rod due to long-term stress in the existing lifting mechanism are solved. This utility model transforms sliding friction into rolling friction, and the lifting process is smooth and impact-free. During static weighing, the load is borne by the rigid support, and the electric push rod is only subjected to force during lifting and adjustment, which greatly improves the service life and structural reliability of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall unfolded structure of this utility model; Figure 3 This is a schematic diagram of the connection structure between the dynamic belt scale and the workbench of this utility model. Figure 4 This is a schematic diagram of the connection structure between the transmission box and the static belt scale of this utility model; Figure 5 This is a schematic diagram of the connection structure of the electric actuator and drive frame of this utility model.

[0016] In the diagram: 1. Workbench; 2. Positioning frame; 3. Transmission box; 4. Dynamic belt scale; 5. Static belt scale; 6. Rotary drum; 7. Adjusting platform; 8. Adjusting wedge; 9. Electric push rod; 10. Drive frame; 11. Adjusting wheel; 12. Limiting wheel; 13. Limiting guide rail; 14. Limiting rotating ring; 15. Turntable; 16. Bevel gear seat ring; 17. T-shaped carriage; 18. Drive motor; 19. Drive bevel gear; 20. Guide hole; 21. Guide rod; 22. Contact sensor; 23. Limiting carriage; 24. Guide block; 25. Load-bearing ring; 26. Load-bearing platform; 27. Structural rib. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] like Figure 1-5 As shown, a dual-scale weighing device with lifting and rotating functions includes a workbench 1. A portal-shaped positioning frame 2 and a rectangular transmission box 3 are fixedly installed on the upper wall of the workbench 1. A dynamic belt scale 4 is fixedly installed on the upper part of the positioning frame 2 for rapid and continuous coarse weighing of packaged rice. The transmission box 3 is located below the dynamic belt scale 4. A static belt scale 5 is slidably connected to the lower part of the positioning frame 2 along the height direction for high-precision static verification of the dynamically weighed rice. The discharge end of the dynamic belt scale 4 is adjacent to the feed end of the static belt scale 5 to ensure that the rice can be smoothly transported from the dynamic belt scale 4 to the static belt scale 5.

[0019] like Figure 4 As shown, a cylindrical rotating drum 6 is provided below the static belt scale 5. The rotating drum 6 is fixedly installed on the upper wall of the adjusting platform 7. Several structural ribs 27 are welded between the rotating drum 6 and the adjusting platform 7 to enhance the connection strength and structural rigidity. A drive structure for driving the static belt scale 5 to rotate is fixedly installed inside the rotating drum 6. The drive structure includes a limiting rotating ring 14, a rotating platform 15, a bevel gear seat ring 16, a T-shaped slide 17, and a drive motor 18. The limiting rotating ring 14 is fixedly installed on the upper end face of the rotating drum 6, and a deep groove ball shaft is installed inside it. The upper wall of the turntable 15 is fixedly connected to the lower wall of the static belt scale 5 by bolts. A bevel gear seat 16 is fixedly installed on the inner ring of the lower wall of the turntable 15, and a T-shaped slide 17 is fixedly installed on the outer ring of the lower wall. The T-shaped slide 17 is embedded in the bearing in the limiting ring 14 and is rolled and adapted to the limiting ring 14. The drive motor 18 is a geared motor, which is fixedly installed on the inner bottom wall of the drum 6. A drive bevel gear 19 is fixedly installed on its drive end, and the drive bevel gear 19 meshes with the bevel gear seat 16 for transmission.

[0020] like Figure 4-5 As shown, an adjusting wedge 8 is fixedly installed at the center of the lower wall of the adjusting platform 7, with the inclined surface of the adjusting wedge 8 facing the direction of the transmission box 3; a horizontally arranged electric push rod 9 is fixedly installed on the side wall of the transmission box 3, with the driving end of the electric push rod 9 facing the adjusting wedge 8; a drive frame 10 is fixedly installed on the driving end of the electric push rod 9, and an adjusting wheel 11 is rotatably connected to the middle of the drive frame 10 through a bearing, with the outer circumferential surface of the adjusting wheel 11 rolling in contact with the inclined surface of the adjusting wedge 8; the left and right side walls of the drive frame 10 are respectively rotatably connected to limit wheels 12 through bearings, and a U-shaped limit guide rail 13 is fixedly installed on the upper wall of the worktable 1, with the two limit wheels 12 respectively embedded in the grooves on both sides of the limit guide rail 13, rolling and adapting with the limit guide rail 13 to ensure that the drive frame 10 can only move linearly in the horizontal direction.

[0021] like Figure 3-4 As shown, the upper wall of the regulating platform 7 has two parallel guide holes 20, and the axial direction of the guide holes 20 is consistent with the sliding direction of the static belt scale 5; two vertically upward guide rods 21 are fixedly installed on the upper wall of the closed end of the limit guide rail 13, and the two guide rods 21 pass through the two guide holes 20 respectively and slide with the guide holes 20; a contact sensor 22 is fixedly installed at the top of each guide rod 21 to detect the signal of the regulating platform 7 rising to the correct position.

[0022] like Figure 3-4As shown, limit slides 23 are fixedly installed on the left and right sides of the positioning frame 2 and the upper wall of the worktable 1, respectively. Guide blocks 24 are fixedly installed on the left and right side walls of the adjusting table 7. The guide blocks 24 are embedded in the slide grooves of the limit slides 23 and slide with the limit slides 23 to ensure the straightness of the vertical movement of the adjusting table 7. The middle part of the two guide rods 21 is fixedly installed with load-bearing rings 25, and the inner side walls of the two limit slides 23 are fixedly installed with load-bearing platforms 26. The upper surface of the load-bearing platform 26 is at the same height as the upper surface of the load-bearing ring 25. When the electric push rod 9 retracts to the minimum stroke, the lower wall of the adjusting table 7 falls on the upper surface of the load-bearing platform 26 and the upper surface of the load-bearing ring 25 at the same time and is supported by both. At this time, the upper surface height of the dynamic belt scale 4 and the static belt scale 5 is the same, forming a continuous conveying plane.

[0023] Multiple angle proximity switches are installed on the inner wall of the rotating drum 6, corresponding to different diversion angles. At the same time, a rotary encoder is installed on the output shaft of the drive motor 18. Through dual positioning, the static belt scale 5 can accurately rotate to the corresponding conveyor belt angle, thereby achieving precise diversion of defective products.

[0024] Specifically: During normal weighing and conveying: Packaged rice first enters the dynamic belt scale 4, where it performs rapid and continuous coarse weighing and transmits the weighing data to the control system. The rice is then smoothly conveyed to the static belt scale 5. When the detector on the static belt scale 5 detects that the rice has moved to the designated position, it stops operating the static belt scale 5 for static high-precision weighing.

[0025] If the deviation between the static weighing result and the dynamic weighing result is within a reasonable range, the product is judged to be qualified. The control system controls the static belt scale 5 to start, transporting the qualified product to the next process for subsequent packaging or palletizing.

[0026] If the static weighing result indicates a non-conforming product (too light or too heavy), the control system activates the electric push rod 9. The electric push rod 9 drives the drive frame 10 and the adjusting wheel 11 to move forward along the limit guide rail 13. The adjusting wheel 11 rolls along the inclined surface of the adjusting wedge block 8, converting the horizontal thrust into vertical lift, which drives the adjusting platform 7, the rotating drum 6, and the static belt scale 5 to move upward along the limit slide 23. When the upper wall of the adjusting platform 7 contacts the contact sensor 22 at the top of the guide rod 21, the electric push rod 9 stops and self-locks. At this time, the static belt scale 5 rises and disengages from the normal conveyor line, and the conveyor line slows down or stops.

[0027] Rotary diversion: Based on the type of non-conformity (too light or too heavy), the control system starts the drive motor 18. The drive motor 18 drives the turntable 15 and the static belt scale 5 to rotate via the drive bevel gear 19 and bevel gear seat 16. Through dual positioning by a rotary encoder and an angle proximity switch, the static belt scale 5 is accurately rotated to the angle corresponding to the non-conforming product conveyor belt. Then, the static belt scale 5 is started to transport the non-conforming products to the designated non-conforming product collection location.

[0028] Reset Preparation: After the defective products are conveyed, the drive motor 18 rotates the static belt scale 5 to reset to its initial angle. Then, the electric push rod 9 retracts, causing the adjusting platform 7 and the static belt scale 5 to descend. When the electric push rod 9 retracts to its minimum stroke, the adjusting platform 7 rests on the load-bearing platform 26 and the load-bearing ring 25, and the dynamic belt scale 4 and the static belt scale 5 return to the same height, ready for the next weighing.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-scale weighing device with lifting and rotating functions, comprising a workbench (1), a positioning frame (2) and a transmission box (3) fixedly installed on its upper wall, a dynamic belt scale (4) fixedly installed inside the positioning frame (2), the transmission box (3) located below the dynamic belt scale (4), a static belt scale (5) slidably connected along the height inside the positioning frame (2), the dynamic belt scale (4) and the static belt scale (5) being adjacent to each other, characterized in that, Also includes: A rotating drum (6) is set below the static belt scale (5), and a drive structure for driving the static belt scale (5) to rotate is fixedly installed inside the rotating drum (6); An adjustment platform (7) is fixedly installed on the lower wall of the rotating drum (6). An adjustment wedge (8) is fixedly installed on the lower wall of the adjustment platform (7). An electric push rod (9) driven along the direction of the adjustment wedge (8) is fixedly installed on the side wall of the transmission box (3). The drive frame (10) is fixedly installed at the drive end of the electric push rod (9). The drive frame (10) is rotatably connected to the adjusting wheel (11) which is adapted to the rolling of the adjusting wedge (8). The two side walls of the drive frame (10) are rotatably connected to the limiting wheel (12). The upper wall of the worktable (1) is fixedly installed with the limiting guide rail (13) which is adapted to the rolling of the limiting wheel (12).

2. The dual-weighing device with lifting and rotating functions according to claim 1, characterized in that, The driving structure includes: The limiting rotating ring (14) has a bearing inside and is fixedly installed on the upper end face of the rotating cylinder (6); A bevel gear seat ring (16) is fixedly installed on the inner ring of the lower wall of the turntable (15), and a T-shaped slide (17) is fixedly installed on the outer ring of the lower wall of the turntable (15). The T-shaped slide (17) is embedded in the bearing in the limiting ring (14) and is adapted to the rolling of the limiting ring (14). The drive motor (18) is fixedly installed on the bottom wall of the rotating drum (6), and the drive end of the drive motor (18) is fixedly installed with a drive bevel gear (19) that meshes with the bevel gear seat (16).

3. The dual-weighing device with lifting and rotating functions according to claim 1, characterized in that, The upper wall of the adjustment platform (7) has two guide holes (20) that slide along the direction of the static belt scale (5) in the axial direction; the limiting guide rail (13) is U-shaped, with its open end facing the transmission box (3); two guide rods (21) that slide and adapt to the guide holes (20) are fixedly installed on the upper wall of the closed end of the limiting guide rail (13); and a contact sensor (22) is fixedly installed at the top of the guide rod (21).

4. The dual-weighing device with lifting and rotating functions according to claim 3, characterized in that, A limiting slide (23) is fixedly installed between the positioning frame (2) and the worktable (1). Guide blocks (24) that are adapted to slide with the limiting slide (23) are fixedly installed on both sides of the adjustment table (7). A load-bearing ring (25) is fixedly installed on the guide rod (21). A load-bearing platform (26) is fixedly installed inside the limiting slide (23). The load-bearing platform (26) and the load-bearing ring (25) are at the same height.

5. The dual-weighing device with lifting and rotating functions according to claim 4, characterized in that, When the electric push rod (9) is retracted to its minimum, the adjustment platform (7) is supported by the load-bearing platform (26) and the load-bearing ring (25). At this time, the dynamic belt scale (4) and the static belt scale (5) are at the same height.

6. The dual-weighing device with lifting and rotating functions according to claim 1, characterized in that, Several structural ribs (27) are fixedly installed between the rotating drum (6) and the adjusting table (7).

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