Automatic zeroing device for electronic scales

Abstract

The application relates to the technical field of electronic scale detection, in particular to an automatic zero reset device of an electronic scale, which comprises a detection platform, a bearing plate is slidably arranged on the detection platform, an electronic scale is placed on the bearing plate, an XY double-shaft linear module for driving the bearing plate to slide is arranged on the detection platform, a mounting seat is arranged at the top of the detection platform, a lifting plate is vertically slidably arranged on the mounting seat, a lifting piece for driving the lifting plate to vertically slide is arranged on the mounting seat, a weight string is arranged on the lifting plate, a detection piece for detecting the gravity change of the weight string is arranged on the lifting plate, a positioning piece for fixing the electronic scale is arranged on the bearing plate, a zero reset frame and a counting frame are arranged on the bearing plate, a zero reset piece for pressing a zero reset key on the electronic scale is arranged on the zero reset frame, and a recording camera electrically connected to a control system is arranged on the counting frame. The application has the effects of reducing the labor intensity of workers and improving the detection efficiency of the electronic scale.

Description

Technical Field

[0001] This application relates to the field of electronic scale testing technology, and in particular to an automatic zeroing device for electronic scales. Background Technology

[0002] An electronic scale is a weighing device that uses electronic technology. It converts the weight of an object into an electrical signal through a sensor, which is then displayed by an electronic device. To ensure the accuracy of the electronic scale, each electronic scale needs to undergo a precision calibration before leaving the factory.

[0003] Chinese Patent No. CN217304132U discloses an automatic calibration device for electronic scales, including a frame, a free-moving mechanism on the frame, a platform connected to the free-moving mechanism, an electric push rod and a main weight motor connected to the top of the frame, a flashing weight mechanism connected to the output end of the electric push rod, a main weight lifting screw connected to the output end of the main weight motor, and a weight string connected to the main weight lifting screw. The positions of the flashing weight mechanism and the weight string correspond to those on the platform.

[0004] When using the above technology, if it is necessary to verify whether the weighing accuracy of different parts of the electronic scale is the same, workers still need to manually perform zeroing operations. During the verification process of each electronic scale, the weighing accuracy of multiple positions on the top of the electronic scale needs to be verified, which requires workers to operate on-site for a long time. This greatly increases the labor intensity of the verification personnel and has its shortcomings. Utility Model Content

[0005] To address the issue of the need for prolonged on-site operation by calibration personnel during the weighing accuracy verification process of electronic scales, this application provides an automatic zeroing device for electronic scales.

[0006] The automatic zeroing device for electronic scales provided in this application adopts the following technical solution: An automatic zeroing device for an electronic scale includes a calibration platform, a support plate slidably mounted on the calibration platform, an electronic scale placed on the support plate, an XY dual-axis linear module for driving the support plate to slide on the calibration platform, a mounting base on the top of the calibration platform, a lifting plate slidably mounted vertically on the mounting base, a lifting component for driving the lifting plate to slide vertically on the mounting base, a string of weights on the lifting plate, a detection component for detecting changes in the gravity of the weights on the lifting plate, a positioning component for fixing the electronic scale on the support plate, a zeroing frame and a counting frame on the support plate, a zeroing component for pressing the zeroing button on the electronic scale on the zeroing frame, and a recording camera electrically connected to the control system on the counting frame.

[0007] By adopting the above technical solution, the worker first fixes the electronic scale to the support plate using positioning components. Then, a zeroing frame and a counting frame are installed on the support plate. Afterward, the XY dual-axis linear module drives the support plate to the calibration position. The zeroing component presses the zeroing button on the electronic scale, and then the lifting component drives the lifting plate to slide vertically. The lifting plate moves the weight string closer to the electronic scale. When the detection component detects a change in the weight of the weight string, the lifting component controls the lifting plate to move vertically a fixed distance, which is the distance between two adjacent weights. The recording camera compares the reading displayed on the electronic scale with the weight of the weights placed on the electronic scale, thereby verifying the weighing accuracy at that position on the electronic scale. This process can be repeated multiple times without the need for the worker to operate the scale throughout the entire process, greatly reducing the worker's labor intensity.

[0008] Optionally, the support plate is made of steel, and the positioning element includes an abutment block. An electromagnet electrically connected to the control system is provided on the abutment block. The abutment block is distributed around the electronic scale, and the electromagnet is used to attract the scale onto the support plate.

[0009] By adopting the above technical solution, the worker first places the abutment block against the outer wall of the electronic scale, and then activates the electromagnet, causing the electromagnet to be attracted to the support plate, thereby fixing the electronic scale to the support plate. Since the electromagnet can be attracted and fixed at any position on the support plate, the adaptability to different types of electronic scales is greatly improved.

[0010] Optionally, the zeroing frame includes a vertical rod, a horizontal rod, a longitudinal rod, and a mounting rod. The vertical rod is detachably mounted on the support plate, and connecting blocks are detachably provided between the vertical rod and the horizontal rod, between the horizontal rod and the longitudinal rod, and between the longitudinal rod and the mounting rod.

[0011] By adopting the above technical solution, the goal of allowing workers to adjust the angle at any time is achieved.

[0012] Optionally, the zeroing component includes a detachable support rod mounted on the mounting rod, on which an electric cylinder electrically connected to the control system is mounted, and the piston rod of the electric cylinder extends in the direction of pointing towards the zeroing button on the electronic scale.

[0013] By adopting the above technical solution, when a zeroing operation is required, the control system starts the electric cylinder, the piston rod of the electric cylinder extends, and the piston rod presses the zeroing button on the electronic scale, thereby achieving the effect of automatic zeroing operation and greatly reducing the frequency of worker operation.

[0014] Optionally, a rubber head is provided on the piston rod of the electric cylinder.

[0015] By adopting the above technical solution, the possibility of the buttons on the electronic scale being damaged by pressure is reduced.

[0016] Optionally, the lifting component includes a vertical slide rail disposed on the mounting base, the lifting plate being slidably engaged with the vertical slide rail, a lifting cylinder electrically connected to the control system being disposed on the mounting base, and the lifting plate being disposed on the piston rod of the lifting cylinder.

[0017] By adopting the above technical solution, the control system starts the lifting cylinder, the piston rod of the lifting cylinder retracts, and the piston rod of the lifting cylinder drives the lifting plate to gradually descend, so that the weights on the weight string fall onto the electronic scale in sequence, thereby realizing the measurement of the accuracy of the electronic scale.

[0018] Optionally, the detection element includes a tension sensor disposed on the lifting plate, a hook seat disposed at the end of the tension sensor facing away from the lifting plate, and a connecting rod hinged between the uppermost weight of the weight string and the hook seat.

[0019] By adopting the above technical solution, when the index fed back by the tension sensor changes, it indicates that the bottom weight of the weight string is just touching the electronic scale. Then, by dropping multiple weights onto the electronic scale in sequence and comparing the readings of the electronic scale fed back by the camera, the weighing accuracy of the electronic scale can be verified, and it is also convenient to adapt to different models of electronic scales.

[0020] Optionally, the mounting base is equipped with a top camera electrically connected to the control system.

[0021] By adopting the above technical solution, the top camera feeds back the position of the carrier plate to the control system, thereby facilitating the control system to accurately control the XY dual-axis linear module.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The worker first fixes the electronic scale to the support plate using positioning components. Then, a zeroing frame and a counting frame are installed on the support plate. After that, the XY dual-axis linear module drives the support plate to the calibration position. The zeroing component presses the zeroing button on the electronic scale. Then, the lifting component drives the lifting plate to slide vertically. The lifting plate moves the weight string closer to the electronic scale. When the detection component detects a change in the weight string, the lifting component controls the lifting plate to move vertically a fixed distance, which is the distance between two adjacent weights. The recording camera compares the reading on the electronic scale with the weight of the weights placed on the electronic scale, thereby verifying the weighing accuracy at that position on the electronic scale. This process is repeated multiple times. The worker does not need to operate the scale throughout the process, which greatly reduces the labor intensity of the worker. 2. The worker first places the abutment block against the outer wall of the electronic scale, then activates the electromagnet, causing it to adhere to the support plate, thus fixing the electronic scale to the support plate. Since the electromagnet can adhere and fix the scale at any position on the support plate, it greatly improves the adaptability to different types of electronic scales. 3. When the index fed back by the tension sensor changes, it means that the bottom weight of the weight string is just touching the electronic scale. Then, by dropping multiple weights onto the electronic scale in sequence and comparing the readings of the electronic scale fed back by the camera, the weighing accuracy of the electronic scale is verified. This method is also convenient for adapting to different models of electronic scales. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0024] Figure 2 This is a structural schematic diagram illustrating the positional relationship between the mounting base, the top camera, and the tension sensor in an embodiment of this application.

[0025] Figure 3 This is a structural schematic diagram illustrating the positional relationship between the recording camera, electric cylinder, and electromagnet in an embodiment of this application.

[0026] Explanation of reference numerals in the attached diagram: 1. Calibration platform; 2. Bearing plate; 3. Electronic scale; 4. XY dual-axis linear module; 5. Mounting base; 6. Lifting plate; 7. Lifting component; 71. Vertical slide rail; 72. Lifting cylinder; 8. Weight string; 9. Detection component; 91. Tension sensor; 92. Hook seat; 93. Connecting rod; 10. Positioning component; 101. Abutment block; 102. Electromagnet; 11. Zeroing frame; 111. Vertical rod; 112. Horizontal rod; 113. Longitudinal rod; 114. Mounting rod; 115. Connecting block; 12. Counting frame; 13. Returning component; 131. Along rod; 132. Electric cylinder; 14. Recording camera; 15. Rubber head; 16. Top camera. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0028] This application discloses an automatic zeroing device for electronic scales.

[0029] Reference Figure 1 An automatic zeroing device for an electronic scale includes a calibration platform 1, a support plate 2 slidably arranged on the calibration platform 1, and an XY dual-axis linear module 4 for driving the support plate 2 to slide on the calibration platform 1. The XY dual-axis linear module 4 is existing technology. The support plate 2 is made of steel material, and an electronic scale 3 is placed on the support plate 2.

[0030] Reference Figure 1 and Figure 2 The top of the inspection platform 1 is bolted with a mounting base 5, and a top camera 16 electrically connected to the control system is bolted to the mounting base 5. A lifting plate 6 is vertically slidably arranged on the mounting base 5, and a lifting component 7 that drives the lifting plate 6 to slide vertically is arranged on the mounting base 5.

[0031] Reference Figure 1 and Figure 2 The lifting component 7 includes a vertical slide rail 71 bolted to the mounting base 5, a lifting plate 6 slidingly engaging with the vertical slide rail 71, a lifting cylinder 72 electrically connected to the control system bolted to the mounting base 5, and the lifting plate 6 bolted to the piston rod of the lifting cylinder 72.

[0032] Reference Figure 1 and Figure 2 A weight string 8 is arranged on the lifting plate 6. The weight string 8 is formed by multiple weights connected in series at the same distance. A detection element 9 is arranged on the lifting plate 6 to detect the change in gravity of the weight string 8.

[0033] Reference Figure 2 The detection component 9 includes a tension sensor 91 bolted to the lifting plate 6. The tension sensor 91 can be an S-shaped tension sensor 91 in the prior art. A hook seat 92 is bolted to the end of the tension sensor 91 facing away from the lifting plate 6. A connecting rod 93 is hinged between the uppermost weight of the weight string 8 and the hook seat 92.

[0034] Reference Figure 1 and Figure 3 The support plate 2 is provided with positioning components 10 for fixing the electronic scale 3. The positioning components 10 include abutment blocks 101, which may be made of rubber material. An electromagnet 102 electrically connected to the control system is bolted to the abutment block 101. The abutment blocks 101 are distributed around the electronic scale 3. The electromagnet 102 is used to attract the electronic scale 3.

[0035] The worker first places the electronic scale 3 on the support plate 2, then a plurality of abutting blocks 101 are placed around the electronic scale 3, and then the electromagnet 102 is activated, thereby fixing the electronic scale 3 on the support plate 2.

[0036] Reference Figure 1 and Figure 3 The bearing plate 2 is provided with a zeroing frame 11 and a counting frame 12. A recording camera 14 electrically connected to the control system is bolted to the counting frame 12. The zeroing frame 11 includes a vertical rod 111, a horizontal rod 112, a vertical rod 113 and a mounting rod 114. The vertical rod 111 is bolted to the bearing plate 2. Connecting blocks 115 are bolted between the vertical rod 111 and the horizontal rod 112, between the horizontal rod 112 and the vertical rod 113, and between the vertical rod 113 and the mounting rod 114.

[0037] Reference Figure 1 and Figure 3 The zeroing frame 11 is equipped with a zeroing component 13 for pressing the zeroing button on the electronic scale 3. The zeroing component 13 includes a rod 131 bolted to the mounting rod 114. An electric cylinder 132 electrically connected to the control system is bolted to the rod 131. The piston rod of the electric cylinder 132 extends in the direction of the zeroing button on the electronic scale 3. A rubber head 15 is sleeved on the end of the piston rod of the electric cylinder 132. The rubber head 15 may be made of silicone rubber.

[0038] The worker adjusts the counting frame 12 so that the recording camera 14 points to the display screen of the electronic scale 3. At the same time, the worker adjusts the zeroing frame 11 so that the piston rod of the electric cylinder 132 extends in the direction of the zeroing button on the electronic scale 3. Then, the worker inputs the distance between two adjacent weights on the weight string 8 and the weight of the weight at each position into the control system to complete the initial adjustment of the electronic scale 3.

[0039] The XY dual-axis linear module 4 drives the support plate 2 to slide, and the support plate 2 moves the electronic scale 3 to below the weight string 8. Then, the control system starts the electric cylinder 132, which drives the piston rod to press the zeroing button of the electronic scale 3. After that, the control system starts the lifting cylinder 72, which retracts the piston rod and drives the lifting plate 6 to gradually descend until the value fed back by the tension sensor 91 changes.

[0040] The control system controls the piston rod of the lifting cylinder 72 to descend sequentially according to the distance value between two adjacent weights input on it. During this process, the recording camera 14 will feed back the reading after each weight is added to the control system. The control system analyzes whether the total weight of the weights on the electronic scale 3 is consistent with the reading of the electronic scale 3, thereby verifying whether the accuracy of the electronic scale 3 is qualified.

[0041] The implementation principle of the automatic zeroing device for an electronic scale according to the present application is as follows: the worker first places the electronic scale 3 on the support plate 2, then a plurality of abutting blocks 101 are abutted around the electronic scale 3, and then the electromagnet 102 is activated, thereby fixing the electronic scale 3 on the support plate 2.

[0042] The worker adjusts the counting frame 12 so that the recording camera 14 points to the display screen of the electronic scale 3. At the same time, the worker adjusts the zeroing frame 11 so that the piston rod of the electric cylinder 132 extends in the direction of the zeroing button on the electronic scale 3. Then, the worker inputs the distance between two adjacent weights on the weight string 8 and the weight of the weight at each position into the control system to complete the initial adjustment of the electronic scale 3.

[0043] The XY dual-axis linear module 4 drives the support plate 2 to slide, and the support plate 2 moves the electronic scale 3 to below the weight string 8. Then, the control system starts the electric cylinder 132, which drives the piston rod to press the zeroing button of the electronic scale 3. After that, the control system starts the lifting cylinder 72, which retracts the piston rod and drives the lifting plate 6 to gradually descend until the value fed back by the tension sensor 91 changes.

[0044] The control system controls the piston rod of the lifting cylinder 72 to descend sequentially according to the distance value between two adjacent weights input on it. During this process, the recording camera 14 will feed back the reading after each weight is added to the control system. The control system analyzes whether the total weight of the weights on the electronic scale 3 is consistent with the reading of the electronic scale 3, thereby verifying whether the accuracy of the electronic scale 3 is qualified.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic zeroing device for an electronic scale, comprising a calibration platform (1), a support plate (2) slidably disposed on the calibration platform (1), an electronic scale (3) placed on the support plate (2), and an XY dual-axis linear module (4) for driving the support plate (2) to slide on the calibration platform (1), characterized in that: The calibration platform (1) is provided with a mounting base (5) on top. A lifting plate (6) is vertically slidably mounted on the mounting base (5). A lifting component (7) is provided on the mounting base (5) to drive the lifting plate (6) to slide vertically. A weight string (8) is provided on the lifting plate (6). A detection component (9) for detecting the change in gravity of the weight string (8) is provided on the lifting plate (6). A positioning component (10) for fixing the electronic scale (3) is provided on the bearing plate (2). A zeroing frame (11) and a counting frame (12) are provided on the bearing plate (2). A zeroing component (13) for pressing the zeroing button on the electronic scale (3) is provided on the zeroing frame (11). A recording camera (14) electrically connected to the control system is provided on the counting frame (12).

2. The automatic zeroing device for an electronic scale according to claim 1, characterized in that: The support plate (2) is made of steel. The positioning component (10) includes an abutment block (101). An electromagnet (102) electrically connected to the control system is provided on the abutment block (101). The abutment blocks (101) are distributed around the electronic scale (3). The electromagnet (102) is used to adhere to the support plate (2).

3. The automatic zeroing device for an electronic scale according to claim 1, characterized in that: The zeroing frame (11) includes a vertical rod (111), a horizontal rod (112), a longitudinal rod (113), and a mounting rod (114). The vertical rod (111) is detachably mounted on the bearing plate (2). Connecting blocks (115) are detachably mounted between the vertical rod (111) and the horizontal rod (112), between the horizontal rod (112) and the longitudinal rod (113), and between the longitudinal rod (113) and the mounting rod (114).

4. The automatic zeroing device for an electronic scale according to claim 3, characterized in that: The zeroing component (13) includes a detachable rod (131) mounted on the mounting rod (114). An electric cylinder (132) electrically connected to the control system is mounted on the rod (131). The piston rod of the electric cylinder (132) extends in the direction of the zeroing button on the electronic scale (3).

5. The automatic zeroing device for an electronic scale according to claim 4, characterized in that: A rubber head (15) is provided on the piston rod of the electric cylinder (132).

6. The automatic zeroing device for an electronic scale according to claim 4, characterized in that: The lifting component (7) includes a vertical slide rail (71) disposed on the mounting base (5), the lifting plate (6) is slidably engaged with the vertical slide rail (71), the mounting base (5) is provided with a lifting cylinder (72) electrically connected to the control system, and the lifting plate (6) is disposed on the piston rod of the lifting cylinder (72).

7. The automatic zeroing device for an electronic scale according to claim 6, characterized in that: The detection component (9) includes a tension sensor (91) disposed on the lifting plate (6). A hook seat (92) is provided at one end of the tension sensor (91) facing away from the lifting plate (6). A connecting rod (93) is hinged between the uppermost weight of the weight string (8) and the hook seat (92).

8. The automatic zeroing device for an electronic scale according to claim 1, characterized in that: The mounting base (5) is equipped with a top camera (16) that is electrically connected to the control system.

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