Weighing instrument of lifting machine

Abstract

The utility model relates to a weighing instrument of a lifting machine. The weighing instrument structurally comprises a base, a weighing platform and a loading mechanism, the object carrying mechanism is composed of a main frame, a lifting mechanism and a bottom support, the main frame is installed on the weighing platform, the lifting mechanism is fixed to the main frame, and the output end of the lifting mechanism is connected with the bottom support and drives the bottom support to ascend and descend relative to the weighing platform so as to adapt to objects to be weighed of different heights. According to the weighing instrument, the lifting mechanism is integrated, the vertical lifting function is achieved, the flexibility of the weighing instrument is improved, the weighing instrument can be seamlessly integrated into an automatic production line, online weighing is achieved in cooperation with a moving tray, and the automation level is remarkably improved. In addition, the weighing instrument is compact in design and high in adaptability, the size can be telescopically adjusted according to needs, and diversified production line layout requirements are perfectly met. According to the utility model, the lifting function and the weighing function are combined, and an efficient and flexible solution is provided for weighing articles on a production line.

Description

Technical Field

[0001] This utility model relates to the field of medical weighing technology, and in particular to a lifting machine weighing instrument. Background Technology

[0002] In the medical field, accurate weighing of reagent bottles, small medical devices, and other items is crucial for ensuring the accuracy of drug preparation, experimental data, and inventory management during production, experimentation, and warehousing. While existing lightweight weighing equipment (such as electronic scales and platform scales) can meet basic weighing needs, they generally suffer from limited functionality and a lack of height adjustment mechanisms. For example, on automated production lines, conveyor belts or robotic arms in different processes are often at different heights. Traditional weighing equipment, lacking lifting capabilities, requires manual handling or adjustments to the production line layout for adaptation, leading to inefficiency and susceptibility to human error. Utility Model Content

[0003] The purpose of this utility model is to provide a lifting weighing instrument with a lifting mechanism, which is small in size and can be flexibly applied to automated production lines.

[0004] To achieve the above objectives, the solution of this utility model is: a lifting machine weighing instrument, comprising:

[0005] The base is used to support the entire weighing instrument;

[0006] A weighing platform, mounted on a base, is used for weighing.

[0007] The loading mechanism, located on the weighing platform, includes a main frame, a lifting mechanism, and a base for placing the object to be weighed. The main frame is mounted on the weighing platform, the fixed end of the lifting mechanism is fixed to the main frame, and the output end of the lifting mechanism is connected to the base above it, driving the base to lift relative to the weighing platform to accommodate objects at different heights.

[0008] Furthermore, the lifting mechanism is an electric lifting mechanism, and its lifting stroke range is adapted to the lifting needs of objects of different heights. Compared with pneumatic solutions, the electric solution has higher positioning accuracy (±0.1mm) and quieter operation, avoiding vibration interference that may be caused by compressed air systems. The push rod has a built-in encoder that provides real-time feedback on displacement, and combined with the PLD control algorithm, it achieves closed-loop control.

[0009] Furthermore, the lifting mechanism is a motor, the main body of which is fixed on the main frame, and the telescopic rod of the motor is connected to the base above it.

[0010] Furthermore, a fixed seat is fixedly provided on the main frame, the fixed end of the lifting mechanism is fixed on the fixed seat, the output end of the lifting mechanism is connected to a slide, and the bottom support is installed above the slide. When the output end of the lifting mechanism moves, it drives the slide to slide up and down, thereby raising and lowering the bottom support on the slide.

[0011] Furthermore, the main frame has vertically extending guide columns, and the slide is slidably sleeved on the guide columns. Under the drive of the lifting mechanism, it makes linear reciprocating motion along the guide columns. The guide columns and linear bearings cooperate to form a four-column guide structure, which controls the linearity of the slide's movement within 0.05mm / m. In addition, the surface of the guide columns is treated with hard chrome plating, and the coefficient of friction is less than 0.15 to reduce movement resistance.

[0012] Furthermore, the base has a placement groove in the middle for placing the object to be weighed, and the placement groove adopts a gradually tapered design; the base is detachably installed on the slide, and by replacing the base with a mounting groove of different sizes, the weighing requirements of objects of different specifications can be met.

[0013] Furthermore, the connection between the base and the slider can be a threaded connection, a plug-in connection, or a snap-fit ​​connection.

[0014] Furthermore, the main frame includes an adapter, a top cover, and a support frame. The adapter is mounted on the weighing platform, and the support frame is supported between the adapter and the top cover. The three components form an accommodating space, and the lifting mechanism and the base are located within this accommodating space.

[0015] Furthermore, the upper cover has an opening in the middle for the bottom support and the object to be weighed to pass through. Driven by the lifting mechanism, the bottom support extends out of the main frame or retracts into the main frame through the opening.

[0016] Furthermore, the main frame is a split structure, with the support frame being an outer cover. The outer cover, the upper cover, and the adapter are quickly connected and separated via quick-release bolts.

[0017] After adopting the above solution, the beneficial effects of this utility model are as follows:

[0018] 1. By setting up a lifting structure, the weighing instrument can be lifted up and down, enabling it to be flexibly applied in automated production lines. It can be used in conjunction with a moving pallet to achieve online weighing of the items to be weighed, increasing the flexibility and automation level of the equipment.

[0019] 2. By combining lifting and weighing functions, a compact and highly adaptable weighing instrument has been created. The device is expandable and can flexibly adapt to the layout requirements of different production lines, greatly enhancing its space adaptability and bringing significant convenience to users.

[0020] 3. The replaceable base design meets the weighing requirements of various sizes of items to be weighed, reducing the cost of purchasing multiple devices. Taking reagent bottles as an example, by changing the base of the corresponding size, it can adapt to the weighing needs of reagent bottles with different capacities from 2ml to 50ml. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a lifting machine weighing instrument according to an embodiment of this utility model;

[0022] Figure 2 This is an exploded view of the structure of a lifting machine weighing instrument according to an embodiment of this utility model;

[0023] Figure 3 This is a cross-sectional view of a lifting machine weighing instrument according to an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the lifting state of the lifting weighing instrument according to an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the lifting weighing instrument in the descent state according to an embodiment of this utility model.

[0026] Label Explanation:

[0027] 1. Base; 2. Weighing platform;

[0028] 3. Main frame; 31. Adapter; 32. Top cover; 321. Opening; 33. Outer cover; 34. Fixing base; 341. Through hole; 35. Guide post; 36. Guide sleeve;

[0029] 4. Lifting mechanism; 41. Motor; 42. Telescopic rod;

[0030] 5. Base support; 51. Mounting slot; 52. Insertion slot;

[0031] 6. Slide; 61. Mounting slot; 62. Insertion post. Detailed Implementation

[0032] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] This utility model provides a lifting machine weighing instrument, mainly used for online weighing of reagent bottles, such as... Figures 1 to 5As shown, the weighing instrument includes a base 1, a weighing platform 2, and a loading mechanism. The base 1 supports the entire weighing instrument. The weighing platform 2 is fixedly mounted on the base 1 and contains a gravity sensor module, enabling the weighing of items. This application specifies the specific type of the asymmetrical weighing platform 2; typically, it is an electronic scale to ensure weighing accuracy and convenience. The loading mechanism, located entirely on the weighing platform 2, includes a main frame 3, a lifting mechanism 4, and a base 5. The main frame 3 is mounted on the weighing platform 2, the fixed end of the lifting mechanism 4 is fixed to the main frame 3, and the output end of the lifting mechanism 4 is connected to the base 5 above it, driving the base 5 to rise and fall relative to the weighing platform 2. The base 5 has a placement slot 51 in the middle for placing the item to be weighed. The base 5 rises and falls to accommodate items at different heights. By setting up a lifting mechanism, the base 5 can be lifted up and down, enabling the weighing instrument to perform online weighing in conjunction with a moving pallet in automated production lines, increasing the flexibility and automation level of the equipment.

[0034] In this embodiment, as Figures 1 to 3 As shown, the main frame 3 features an innovative split design, comprising an adapter 31, an upper cover 32, and an outer casing 33. These three components are quickly connected and separated using quick-release bolts, facilitating maintenance. In actual operation, the outer casing can be separated simply by removing eight M3 bolts.

[0035] The adapter 31 is connected to the weighing platform 2, while the outer cover 33 is supported between the adapter 31 and the upper cover 32, forming an accommodating space. The lifting mechanism 4 and the base support 5 are located within this accommodating space, meaning that the lifting mechanism 4 drives the base support 5 to move up and down relative to the main frame 3. At the same time, the outer cover 33 is located on the outer periphery of the main frame 3, serving to hide and protect the internal components of the main frame 3.

[0036] like Figures 2 to 4 As shown, a fixed base 34 for fixing the lifting mechanism 4 is fixed between the adapter 31 and the upper cover 32. The fixed base 34 divides the internal space of the main frame 3 into an upper space and a lower space. The lifting mechanism 4 is located in the lower space, with its fixed end fixed to the fixed base 34 and its output end extending upward through the through hole 341 on the fixed base 34 to connect with the upper slide 6. The slide 6, as a key component connecting the lifting mechanism 4 and the base 5, bears the weight of the base 5 and achieves flexible up-and-down sliding through its connection with the output end of the lifting mechanism 4. When the lifting mechanism 4 starts working, its output end will extend and retract, which directly drives the slide 6 to slide up and down, thereby enabling the base 5 installed on the slide 6 to rise and fall smoothly to accommodate objects of different heights.

[0037] To ensure the accuracy and stability of the lifting and lowering of the base support 5, several vertically extending guide columns 35 are installed on the main frame 3. For example... Figure 3 and Figure 4 As shown, the lower ends of these guide posts 35 are fixed to the adapter 31, while the upper ends are fixed to the top cover 32, forming a vertical guide path. The slide 6 is fitted onto the guide posts 35 via guide sleeves 36. Driven by the lifting mechanism 4, the slide 6 can perform precise linear reciprocating motion along the guide posts 35. The linear bearing design of the guide posts 35 and guide sleeves 36 forms a four-post guide structure, controlling the linearity of the slide 6's movement within 0.05 mm / m. In addition, the surface of the guide posts 36 is hard chrome plated, with a friction coefficient of less than 0.15 to reduce movement resistance.

[0038] like Figure 1 and Figure 3 As shown, the upper cover 32 has an opening 321 in the middle, which is sized to allow the base tray 5 and the object to be weighed placed on the base tray 5 to pass through smoothly. When the lifting mechanism 4 is activated and drives the base tray 5 to move up and down, the base tray 5 can extend smoothly out of the main frame 3 through this opening 321 so that the object to be weighed can be placed on it, or after being weighed, the base tray 5 can retract into the main frame 3 along the same path to remove the object and reset the weighing instrument.

[0039] The lifting mechanism 4 is designed flexibly and in various forms, including but not limited to an electric lifting mechanism 4. These different types of lifting mechanisms 4 all possess sufficient lifting capacity and stroke range to meet the lifting needs of objects of different heights. Compared to pneumatic solutions, electric lifting mechanisms offer higher positioning accuracy (±0.1mm) and quieter operation, avoiding vibration interference that may be caused by compressed air systems. The push rod has a built-in encoder that provides real-time displacement feedback, and closed-loop control is achieved through a PLD control algorithm. In this specific embodiment, a motor 41 is preferred as the lifting mechanism 4, such as... Figures 3 to 5 As shown, the main body of the motor 41 is fixed on the main frame 3, and the telescopic rod 42 of the motor 41 is connected to the upper slide 6. Driven by the motor 41, the telescopic rod 42 can extend and retract, thereby driving the slide 6 and the base 5 installed on the slide 6 to perform lifting and lowering operations.

[0040] To meet the weighing requirements of items of different sizes, this application provides multi-specification base supports 5 with different sized mounting slots 51, and these base supports 5 are designed to be detachable and replaceable. The specific structure is as follows: Figure 2 and Figure 3As shown, a mounting groove 61 is located at the center of the upper part of the slide block 6, and a plug-in post 62 is located in the center of the mounting groove 61. Correspondingly, each base 5 has a plug-in groove 52 at its bottom that matches the plug-in post 62. Through the cooperation of the plug-in groove 52 and the plug-in post 62, a stable and flexible detachable and replaceable connection is achieved between the base 5 and the slide block 6. When it is necessary to weigh objects of different specifications, the user only needs to select the appropriate size base 5 according to the actual needs. The specific operation is simple and convenient: first, remove the currently plugged base 5 from the plug-in post 62 by separating it from the plug-in groove 52; then, accurately install the base 5 of the required size by accurately connecting it to the plug-in post 62 through the plug-in groove 52. This design not only greatly improves the flexibility and convenience of operation, but also effectively meets the weighing requirements of various sizes of objects, and reduces the cost for users to purchase multiple devices. Taking online weighing of reagent bottles as an example, the placement tank 51 adopts a gradual taper design (similar to that of reagent bottles). Depending on the customer's different weighing requirements and reagent bottle specifications, the user only needs to select and replace the corresponding specification of the base tray 5 to achieve accurate weighing of reagent bottles with different capacities from 2ml to 50ml.

[0041] The connection between the base 5 and the slider is diverse and flexible, including but not limited to threaded connections, plug-in connections, and snap-fit ​​connections. Each of these connection methods has its own characteristics, which can meet the connection requirements in different application scenarios and ensure the stability and reliability of the connection between the base 5 and the slider.

[0042] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components. Furthermore, the front, back, left, and right directions involved in this embodiment are only as a reference and do not represent the actual orientation in practical application.

[0043] The above description is only a preferred embodiment of this utility model and is not intended to limit the design of this case. All equivalent changes made based on the key design of this case shall fall within the protection scope of this case.

Claims

1. A lifting machine weighing instrument, characterized in that, include: The base (1) is used to support the entire weighing instrument; Weighing platform (2), set on base (1), is used for weighing; The loading mechanism, located on the weighing platform (2), includes a main frame (3), a lifting mechanism (4), and a base (5) for placing the object to be weighed. The main frame (3) is mounted on the weighing platform (2), the fixed end of the lifting mechanism (4) is fixed on the main frame (3), and the output end of the lifting mechanism (4) is connected to the base (5) above it, and drives the base (5) to lift relative to the weighing platform (2) and the main frame (3) to accommodate objects at different heights.

2. The lifting machine weighing instrument as described in claim 1, characterized in that: The lifting mechanism (4) is an electric lifting mechanism (4), and the lifting stroke range is adapted to the lifting needs of objects of different heights.

3. The lifting machine weighing instrument as described in claim 2, characterized in that: The lifting mechanism (4) is a motor (41). The main body of the motor (41) is fixed on the main frame (3), and the telescopic rod (42) of the motor (41) is connected to the base (5) above it.

4. The lifting machine weighing instrument as described in claim 1, characterized in that: A fixed seat (34) is fixedly provided on the main frame (3). The fixed end of the lifting mechanism (4) is fixed on the fixed seat (34). The output end of the lifting mechanism (4) is connected to a slide (6). The bottom support (5) is installed above the slide (6). When the output end of the lifting mechanism (4) moves, it drives the slide (6) to slide up and down, thereby raising and lowering the bottom support (5) on the slide (6).

5. A lifting machine weighing instrument as described in claim 4, characterized in that: The main frame (3) has a vertically extending guide column (35). The slide (6) is slidably sleeved on the guide column (35) and moves linearly back and forth along the guide column (35) under the drive of the lifting mechanism (4). The guide column (35) and the linear bearing cooperate to form a four-column guide structure, which controls the linearity of the slide (6) to within 0.05mm / m. In addition, the surface of the guide column (35) is hard chrome plated, and the coefficient of friction is less than 0.

15.

6. A lifting machine weighing instrument as described in claim 4, characterized in that: The base (5) has a placement groove (51) in the middle for placing the object to be weighed. The placement groove (51) adopts a gradual taper design. The base (5) is detachably installed on the slide (6). By replacing the base (5) with different sizes of installation grooves (61), the weighing requirements of objects of different specifications can be met.

7. A lifting machine weighing instrument as described in claim 6, characterized in that: The connection between the base (5) and the slider can be a threaded connection, a plug-in connection, or a snap-fit ​​connection.

8. A lifting machine weighing instrument as described in claim 1, characterized in that: The main frame (3) includes a transfer seat (31), a top cover (32) and a support frame. The transfer seat (31) is mounted on the weighing platform (2), and the support frame is supported between the transfer seat (31) and the top cover (32). The three form a receiving space, and the lifting mechanism (4) and the base (5) are located in the receiving space.

9. A lifting machine weighing instrument as described in claim 8, characterized in that: The top cover (32) has an opening (321) in the middle for the bottom support (5) and the object to be weighed to pass through. The bottom support (5) extends out of the main frame (3) or retracts into the main frame (3) through the opening (321) under the drive of the lifting mechanism (4).

10. A lifting machine weighing instrument as described in claim 8, characterized in that: The main frame is a split structure, and the support frame is an outer cover (33). The outer cover (33) is quickly connected and separated from the upper cover (32) and the adapter (31) by quick-release bolts.

Images