A weighing apparatus with a mechanical repeat prevention weighing mechanism

Abstract

The utility model discloses a kind of weighing apparatus with mechanical type anti-repeated weighing mechanism, belong to weighing equipment technical field.Weighing apparatus includes weighing apparatus seat, detection mechanism and anti-repeated mechanism being set on weighing apparatus seat;Detection mechanism includes the weighing disc of the up-and-down sliding weighing apparatus and weighing apparatus;Anti-repeated mechanism includes the mobile limiting block being fixed in the bottom of weighing apparatus weighing disc, the support column being fixed in weighing apparatus seat, the pulling column being slid in support column and the limiting component of control pulling column movement.Limiting component includes limiting spring and limiting slot, when weighing is completed, lifting weighing apparatus weighing disc, limiting spring and limiting slot are connected, drive pulling column inserts into mobile limiting block.The utility model is through pure mechanical structure, after weighing is completed, weighing disc is automatically locked, and next time weighing can be carried out only by manual unlocking, and repeated measurement problem caused by operation failure is physically eradicated, and it is simple and reliable in structure, and the accuracy of weighing data is significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of weighing equipment technology, and in particular to a weighing instrument with a mechanical anti-repeated weighing mechanism. Background Technology

[0002] As a fundamental measuring tool, weighing instruments play a crucial role in industrial production, logistics warehousing, and commercial settlement. Whether used for material proportioning in the production process or for piece counting during finished product packaging, the accuracy and reliability of the data provided by weighing instruments directly affect product quality and economic benefits.

[0003] On many production lines or packaging stations, operators need to perform a large number of continuous and rapid manual weighing operations. In pursuit of efficiency, the pace of the process is usually fast, with items being placed and removed very frequently.

[0004] In this high-intensity, repetitive work, operators may, due to negligence or fatigue, fail to properly remove weighed items from the weighing pan, or unconsciously place recently weighed items back onto the pan before placing the next item. Traditional electronic scales only read the real-time pressure on the weighing pan and do not identify the object being weighed.

[0005] This can lead to the same item being recorded twice or more by the system, causing serious deviations in the final piece count or total weight, directly affecting the accuracy of production statistics and potentially triggering commercial disputes. Currently, most ordinary weighing instruments on the market lack a simple and effective physical structure to fundamentally avoid such repeated weighing problems caused by human error.

[0006] Therefore, this utility model proposes a weighing instrument with a mechanical anti-repeating weighing mechanism to overcome the shortcomings of the prior art. Utility Model Content

[0007] In view of the problem that in the existing technology, the weighing instrument lacks a physical locking structure to prevent repeated weighing during continuous and rapid manual weighing operations, which makes it easy for the same object to be weighed repeatedly due to operator negligence, resulting in inaccurate final data statistics and low reliability. The present invention aims to provide a weighing instrument with a mechanical anti-repeated weighing mechanism that has been improved in structure and can effectively solve the above problems.

[0008] This utility model provides a weighing instrument with a mechanical anti-duplicate weighing mechanism, including: a weighing instrument base, and a detection mechanism installed on the top of the weighing instrument base; the detection mechanism includes a weighing pan that can be slidably arranged in the vertical direction, a transfer column fixedly connected to the bottom of the weighing pan, and a weighing instrument disposed on the weighing instrument base and located below the transfer column; the weighing instrument also includes an anti-duplicate mechanism for locking the weighing pan after one weighing is completed.

[0009] The anti-repetition mechanism includes a movable limiting block fixedly connected to the bottom of the weighing pan of the weighing instrument, and a sliding groove is provided on the movable limiting block. The anti-repetition mechanism also includes a support column fixedly connected to the weighing instrument base, and a pulling column that can slide horizontally along its axial direction is provided in the support column. One end of the pulling column is adapted to the sliding groove of the movable limiting block.

[0010] Furthermore, the support column is also provided with a limiting component for controlling the engagement or disengagement of the pull column and the movable limiting block. The limiting component includes a limiting spring piece that can be elastically deformed and disposed on the support column, and a limiting groove that is opened on the outer wall of the support column and selectively engages with the limiting spring piece. The limiting spring piece is linked to the pull column, so that when the weighing pan of the weighing instrument rebounds after weighing, the engaging action of the limiting spring piece can drive the pull column into the sliding groove of the movable limiting block, thereby locking the weighing pan of the weighing instrument.

[0011] Preferably, the anti-repeat mechanism further includes a support column fixed on the weighing instrument base and a push column that can slide vertically within the support column. The lower end of the push column is configured to press the limiting spring, causing the limiting spring to disengage from the limiting groove, thereby actively releasing the locking state of the weighing pan of the weighing instrument and preparing for the next weighing.

[0012] Preferably, the support cylinder is provided with a telescopic spring a inside to provide a restoring elastic force to the push column, so as to ensure that the push column can automatically return to the initial position after the unlocking operation is completed; at the same time, the support column is provided with a telescopic spring b inside, which is used to drive the pull column to quickly exit from the slide groove of the moving limit block when the lock is released.

[0013] Preferably, a compression spring and a damping telescopic column that provide a buffering effect are provided between the weighing instrument base and the weighing pan. The compression spring and the damping telescopic column surround the outer periphery of the transmission column to provide buffering and shock absorption during weighing and movement, ensuring the stability of the weighing process and protecting the internal components.

[0014] Preferably, the weighing instrument further includes a protective mechanism, which includes a placement frame detachably mounted on the weighing instrument base, and a sliding plate and rubber brush housed in the placement frame for cleaning the surface of the weighing pan of the weighing instrument, facilitating daily cleaning and maintenance of the equipment.

[0015] Preferably, the weighing pan of the weighing instrument has holes for discharging residues, and anti-slip blocks for increasing friction are also fixed on the weighing pan to prevent the object being weighed from sliding during placement, thereby further improving the stability of the weighing operation.

[0016] Preferably, the weighing instrument further includes a support rod and an operation screen. The lower end of the support rod is fixedly connected to the weighing instrument base, and the upper end of the support rod is fixedly connected to the operation screen. The operation screen is electrically connected to the weighing instrument through a transmission line passing through the inside of the support rod, forming a stable and integrated display and support structure.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art of repeated weighing of the same item due to incomplete removal of the item or operational errors, by setting up a mechanical anti-duplication mechanism that automatically locks the weighing pan after weighing and requires manual button press to unlock and reset. This achieves the technical effect of eliminating repeated weighing from the physical structure, forcing standardized operating procedures, and thus significantly improving the accuracy and reliability of weighing data.

[0018] 2. This utility model solves the problem that traditional weighing instruments suffer from impact vibration or bumps during movement when heavy objects are placed, by adding a compression spring and a damping telescopic column in synergy. It achieves the technical effects of buffering and shock absorption, ensuring a smooth weighing process, protecting the internal weighing sensor, and extending the overall service life of the weighing instrument.

[0019] 3. This utility model, by setting a protective mechanism with a sliding plate and a rubber brush, and combining the holes and anti-slip blocks on the weighing pan, solves the problems of dirt residue on the surface of the weighing pan, inconvenient cleaning, and easy slippage of the weighed items. It achieves the technical effects of convenient cleaning, keeping the weighing pan clean, preventing the weighed items from slipping, thereby further ensuring weighing stability and improving the convenience of equipment maintenance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a weighing instrument with a mechanical anti-repeating weighing mechanism proposed in this utility model; Figure 2 This is a schematic diagram of the weighing pan of a weighing instrument with a mechanical anti-repeating weighing mechanism proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the pull column of a weighing instrument with a mechanical anti-repeating weighing mechanism proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0021] Legend: 1. Weighing instrument base; 2. Support rod; 3. Detection mechanism; 31. Weighing pan; 32. Weighing instrument; 33. Transfer column; 4. Anti-repetition mechanism; 41. Compression spring; 42. Damping telescopic column; 43. Support column; 44. Support cylinder; 45. Telescopic spring a; 46. Telescopic spring b; 47. Push column; 48. Pull column; 49. Limiting component; 491. Limiting spring; 492. Limiting groove; 410. Moving limit block; 5. Protection mechanism; 51. Placement frame; 52. Sliding plate; 53. Rubber brush; 54. Hole; 55. Anti-slip block; 6. Operation panel. Detailed Implementation

[0022] Example: Reference Figures 1 to 5 This utility model provides a weighing instrument with a mechanical anti-repeated weighing mechanism, which aims to solve the problem that existing weighing instruments lack a physical locking structure to prevent repeated weighing, and are prone to repeated measurement of the same object due to operational errors during continuous operation, resulting in inaccurate data.

[0023] like Figure 1 and Figure 2 As shown, the weighing instrument with a mechanical anti-double weighing mechanism includes a weighing base 1 and a detection mechanism 3 installed on top of the weighing base 1. The weighing base 1 serves as the mounting base for the entire device, providing stable support for all components. The detection mechanism 3 is used to perform the weighing function. The detection mechanism 3 includes a weighing pan 31 that can be slidably arranged in the vertical direction, a transmission column 33 fixedly connected to the bottom of the weighing pan 31, and a weighing device 32 located on the weighing base 1 and below the transmission column 33. The weighing instrument also includes a support rod 2 and an operation screen 6. The lower end of the support rod 2 is fixedly connected to the weighing base 1, and the upper end of the support rod 2 is fixedly connected to the operation screen 6. The operation screen 6 is electrically connected to the weighing device 32 through a transmission line passing through the inside of the support rod 2, and is used to display the weighing result.

[0024] To lock the weighing pan 31 after weighing, the weighing instrument is also equipped with an anti-duplicate mechanism 4. The anti-duplicate mechanism 4 includes a movable limiting block 410 fixedly connected to the bottom of the weighing pan 31. The movable limiting block 410 has a sliding groove and moves synchronously with the rise and fall of the weighing pan 31. The anti-duplicate mechanism 4 also includes a support column 43 fixedly connected to the weighing instrument base 1. A pulling column 48 is slidably inserted horizontally along the axial direction of the support column 43. One end of the pulling column 48 is adapted to the sliding groove of the movable limiting block 410 and is used to insert into the sliding groove under specific conditions to restrict the movement of the movable limiting block 410. The support column 43 is also equipped with a control mechanism. The limiting component 49, which engages or disengages with the pull column 48 and the movable limiting block 410, is the core of the locking and unlocking function. Specifically, it includes a limiting spring 491 that is elastically deformable and set on the support column 43, and a limiting groove 492 that is opened on the outer wall of the support column 43 and selectively engages with the limiting spring 491. The limiting spring 491 is linked to the pull column 48, so that during the rebound stroke of the weighing pan 31 after weighing, the limiting spring 491 can drive the pull column 48 into the sliding groove of the movable limiting block 410 through its own engaging action with the limiting groove 492, thereby locking the weighing pan 31 in a non-weighing position and preventing repeated weighing.

[0025] Reference Figure 1 , Figure 3 and Figure 5 The unlocking assembly specifically includes a support cylinder 44 fixed to the weighing base 1, and a push column 47 slidably disposed within the support cylinder 44 in a vertical direction. The support cylinder 44 provides guidance and support for the reciprocating motion of the push column 47. The lower end of the push column 47 is precisely aligned with and located above the limiting spring 491. When unlocking is required, external pressure is applied to the push column 47, causing it to slide downwards. Its lower end directly pushes the limiting spring 491 to undergo elastic deformation, thereby forcibly disengaging the limiting spring 491 from the limiting groove 492. To ensure the mechanism resets after the unlocking operation, a telescopic spring a45 is also provided inside the support cylinder 44. The telescopic spring a45 abuts against the push column 47 and is used to apply external pressure. After retraction, an upward reset force is provided to the push column 47; at the same time, a telescopic spring b46 is also provided inside the support column 43. The telescopic spring b46 abuts against the pull column 48 and continuously provides the pull column 48 with the driving force to disengage from the slide of the moving limit block 410; when the push column 47 presses the limit spring 491 to release the constraint on the pull column 48, the elastic energy stored in the telescopic spring b46 is immediately released, driving the pull column 48 to quickly exit from the slide of the moving limit block 410. This unlocking structure, which is composed of the push column 47, the limit spring 491 and the reset spring, ensures the instantaneousness and reliability of the unlocking action and completes the entire working cycle of the anti-repeated weighing mechanism from locking to unlocking.

[0026] As a preferred embodiment, in order to improve the stability of the weighing pan 31 during its lifting process and to provide buffer protection for the equipment, please refer to... Figure 1 Between the weighing instrument base 1 and the weighing pan 31, there is also an elastically connected compression spring 41 and a damping telescopic column 42 that acts as a buffer. Both the compression spring 41 and the damping telescopic column 42 surround the outer periphery of the transmission column 33. The compression spring 41 provides the main load-bearing support and rebound force for the weighing pan 31, while the damping telescopic column 42 provides damping during the process of the weighing pan 31 sinking under pressure or rebounding after unloading, effectively absorbing impact energy and suppressing vibration, ensuring that the transmission column 33 can smoothly contact or separate from the weighing instrument 32.

[0027] As another preferred embodiment, for ease of cleaning and maintenance of the weighing instrument, please refer to... Figure 1 The weighing instrument is also equipped with a protection mechanism 5, which includes a placement frame 51 that is detachably installed on the weighing instrument base 1. The interior of the placement frame 51 is used to store the sliding plate 52 and the rubber brush 53. After the weighing operation is completed, the staff can remove the sliding plate 52 and the rubber brush 53 to clean the surface of the weighing pan 31 of the weighing instrument and keep the equipment clean.

[0028] As another preferred embodiment, to further optimize the weighing environment and increase the placement stability of the object being weighed, please refer to... Figure 2 and Figure 4 The weighing pan 31 of the weighing instrument has holes 54 on its surface. Dust or small residues generated during the weighing process can be discharged through the holes 54 to avoid accumulation and affect the weighing accuracy. In addition, an anti-slip block 55 is fixed on the surface of the weighing pan 31. The anti-slip block 55 effectively prevents the object being weighed from sliding when placed by increasing the friction coefficient of the contact surface.

[0029] The working principle is as follows: During weighing, the object to be weighed is placed on the weighing pan 31 of the weighing instrument. Its gravity causes the weighing pan 31 to move downwards against the elastic force of the compression spring 41. During this process, the damping telescopic column 42 provides buffering to ensure smooth movement. The transmission column 33 moves downwards and contacts the weighing instrument 32, transferring the weight to the weighing instrument 32 for measurement. When the object to be weighed is removed, the weighing pan 31 rebounds upwards under the elastic force of the compression spring 41, and the movable limit block 410 fixed at its bottom rises synchronously. When the movable limit block... When 410 rises to the preset position, its slide groove aligns with the pull column 48. At this time, the limit component 49 is triggered, and the limit spring 491 engages with the limit groove 492 on the support column 43. The engagement action drives the pull column 48 to insert into the slide groove of the moving limit block 410 in the horizontal direction, thereby physically locking the weighing pan 31 of the weighing instrument in a raised state that cannot be pressed down. At this time, the transmission column 33 and the weighing device 32 remain separated, and even if an item is placed again, it cannot be weighed, thus realizing the function of preventing repeated weighing.

[0030] When the next weighing is required, the operator presses the push column 47, which moves downward to push the limit spring 491, causing it to deform and disengage from the limit groove 492, thus releasing the lock on the pull column 48. At the moment the constraint is released, the elastic force of the telescopic spring b46 quickly pushes the pull column 48 out of the slide groove of the moving limit block 410. At this point, the lock on the weighing pan 31 of the weighing instrument is completely released, and the entire system returns to its initial weighing state. When the pressing force is released, the push column 47 automatically resets under the action of the telescopic spring a45. Through the complete mechanical closed loop of locking and unlocking, the independence of each weighing operation and the uniqueness of the data are ensured.

Claims

1. A weighing instrument with a mechanical anti-repeating weighing mechanism, comprising: The weighing instrument base (1) and a detection mechanism (3) installed on the top of the weighing instrument base (1); the detection mechanism (3) includes a weighing pan (31) that can be slidably arranged in the vertical direction, a transfer column (33) fixedly connected to the bottom of the weighing pan (31), and a weighing device (32) arranged on the weighing instrument base (1) and located below the transfer column (33); characterized in that it also includes an anti-repetition mechanism (4) for locking the weighing pan (31) after one weighing is completed; the anti-repetition mechanism (4) includes a movable limiting block (410) fixedly connected to the bottom of the weighing pan (31), and a sliding groove is provided on the movable limiting block (410); the anti-repetition mechanism (4) also includes a support column (43) fixedly connected to the weighing instrument base (1), and the support column (43) can slide horizontally along its axial direction. A pull column (48) is provided on the ground, and one end of the pull column (48) is adapted to the groove of the movable limiting block (410). The support column (43) is also provided with a limiting component (49) for controlling the engagement or disengagement of the pull column (48) and the movable limiting block (410). The limiting component (49) includes a limiting spring piece (491) that is elastically deformable and disposed on the support column (43), and a limiting groove (492) that is opened on the outer wall of the support column (43) and selectively engages with the limiting spring piece (491). The limiting spring piece (491) is linked to the pull column (48) and is used to drive the pull column (48) into the groove of the movable limiting block (410) through its own engaging action when the weighing pan (31) rebounds after weighing, thereby locking the weighing pan (31).

2. The weighing instrument with a mechanical anti-repeating weighing mechanism according to claim 1, characterized in that, The anti-repetition mechanism (4) further includes a support column (44) fixed on the weighing instrument base (1) and a push column (47) that can slide vertically inside the support column (44); the lower end of the push column (47) is used to press the limiting spring (491) so that the limiting spring (491) is disengaged from the limiting groove (492) to release the locking of the weighing pan (31).

3. The weighing instrument with a mechanical anti-repeating weighing mechanism according to claim 2, characterized in that, The support cylinder (44) is provided with a telescopic spring a (45) for providing a restoring force to the push column (47); the support column (43) is provided with a telescopic spring b (46) for driving the pull column (48) to exit from the groove of the moving limit block (410).

4. The weighing instrument with a mechanical anti-double-weighing mechanism according to claim 1, characterized in that, A compression spring (41) and a damping telescopic column (42) that provide a buffering effect are also provided between the weighing instrument base (1) and the weighing pan (31). The compression spring (41) and the damping telescopic column (42) surround the outer periphery of the transmission column (33).

5. The weighing instrument with a mechanical anti-repeating weighing mechanism according to claim 1, characterized in that, The weighing instrument also includes a protective mechanism (5); the protective mechanism (5) includes a placement frame (51) detachably mounted on the weighing instrument base (1), and a sliding plate (52) and a rubber brush (53) housed in the placement frame (51) for cleaning the surface of the weighing pan (31) of the weighing instrument.

6. The weighing instrument with a mechanical anti-repeating weighing mechanism according to claim 1, characterized in that, The weighing pan (31) of the weighing instrument has holes (54) for discharging residues, and anti-slip blocks (55) for increasing friction are also fixed on the weighing pan (31).

7. The weighing instrument with a mechanical anti-repeating weighing mechanism according to claim 1, characterized in that, The weighing instrument also includes a support rod (2) and an operation panel (6); the lower end of the support rod (2) is fixedly connected to the weighing instrument base (1), and the upper end of the support rod (2) is fixedly connected to the operation panel (6); the operation panel (6) is electrically connected to the weighing device (32) through a transmission line passing through the inside of the support rod (2).

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