Electronic balance and automatic weighing equipment

Abstract

The utility model relates to the technical field of weighing equipment, and provides an electronic balance and automatic weighing equipment, and the electronic balance comprises a balance body, a protective cover and a driving mechanism. The protective cover covers the balance body. The protective cover is provided with an opening. And a cover plate is movably arranged at the opening. The driving mechanism is in transmission connection with the cover plate and used for driving the cover plate to move so as to open or close the opening. According to the electronic balance provided by the utility model, the balance body is covered with the protective cover, so that the balance body is ensured to be used for supporting and weighing parts in a dust-free environment. The protective cover is provided with an opening, and the opening is provided with a cover plate used for opening and closing the opening, so that the opening is opened when an object to be weighed needs to be placed on the balance body, the opening is closed under other conditions, and the closeness and cleanliness of the protective cover are maintained as much as possible. Meanwhile, the driving mechanism is arranged to drive the cover plate to open and close the opening, and automatic opening and closing of the cover plate are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to weighing equipment technical field especially relates to an electronic balance and automatic weighing equipment. BACKGROUND

[0002] The electronic balance is characterized by accurate and reliable weighing, fast and clear display, automatic detection system, simple automatic calibration device and overload protection device. In chemical experiments or chemical reagent detection, in order to improve the weighing accuracy of the electronic balance, the electronic balance needs to be placed in a dust-free environment for weighing. In the related art, the electronic balance is usually placed in a protective cover, and the cover door needs to be frequently opened and closed by the detection personnel during detection, which is inconvenient to operate and difficult to adapt to the automatic detection line. SUMMARY

[0003] The utility model provides a kind of electronic balance and automatic weighing equipment to solve the defect that detection personnel needs to frequently open and close cover door when using electronic balance to detect in prior art, it is inconvenient to operate, and it is difficult to adapt to the automatic detection line.

[0004] In a first aspect, the utility model provides an electronic balance, comprising:

[0005] A balance body is provided.

[0006] A protective cover is provided on the balance body.

[0007] A driving mechanism is provided, which is in transmission connection with the cover plate and is used to drive the cover plate to move to open or close the opening.

[0008] According to the electronic balance of the utility model, the opening is located at the top of the protective cover and directly above the balance body, and the cover plate is slidably arranged in the opening along the horizontal direction.

[0009] According to the electronic balance of the utility model, the protective cover is provided with a sliding groove, the sliding groove extends along the edge of the opening, and the cover plate is slidably arranged in the sliding groove.

[0010] According to the electronic balance of the utility model, the driving mechanism comprises a guide rail, a driving member and a sliding block.

[0011] The guide rail is arranged on one side of the protective cover and extends along the sliding direction of the cover plate, the sliding block is slidably arranged in the guide rail and connected with the cover plate, and the driving member is in transmission connection with the sliding block.

[0012] The electronic balance of the utility model discloses, drive mechanism still include adapter, the one end of adapter is connected with the slider, the other end extends to the upside of cover plate and is connected with cover plate.

[0013] The electronic balance of the utility model discloses, the cover plate is transparent cover plate.

[0014] The electronic balance of the utility model discloses, at least one side of the protective cover is provided with the observation port, and the transparent plate is installed on the observation port.

[0015] Secondly, the utility model still provides a kind of automatic weighing equipment, comprising: manipulator, controller and the electronic balance as described in any one of the above;

[0016] The controller is electrically connected with the manipulator, the balance body and the drive mechanism respectively;The manipulator is used to move the article to be weighed to the balance body, and feeds back the posture information of the manipulator to the controller;The controller is used to control the drive mechanism to drive the cover plate to open or close the opening according to the posture information of the manipulator, and control the balance body to weigh.

[0017] The automatic weighing equipment of the utility model discloses, the manipulator includes mechanical arm and end effector arranged in the mechanical arm;The end effector includes clamping mechanism and / or liquid taking gun;

[0018] Wherein, the clamping mechanism is used to clamp the article to be weighed;The liquid taking gun is used to add solution into the container on the balance body.

[0019] The automatic weighing equipment of the utility model discloses further includes position detection device and alarm;

[0020] The position detection device is arranged above the balance body, and the position detection device is used to detect the position information of the article to be weighed relative to the balance body;The position detection device and the alarm are electrically connected with the controller respectively;The controller is further used to control the working state of the alarm according to the position information.

[0021] The electronic balance of the utility model discloses, through the protection cover cover is equipped in the balance body, with guarantee the balance body for the component of supporting and weighing is in the dust-free environment, to guarantee the measurement accuracy of balance body. The protection cover is provided with opening, and is provided with the cover plate for opening and closing the opening at the opening, so as to open the opening when needing to place the article to be weighed on the balance body, close the opening under the rest condition, try to maintain the closedness and cleanliness of protection cover. At the same time, through the drive mechanism drive cover plate opening and closing, need not manually open and close the cover plate, also convenient for the control system of automatic detection line, realize the automatic opening and closing of cover plate, effectively solve the defect that the detection personnel need to frequently open and close the door when using the electronic balance to detect in the prior art, inconvenient operation, and difficult to adapt to the automatic detection line. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme of the utility model or the prior art, the following will be a simple introduction to the drawings needed to be used in the embodiment or the prior art description, obviously, the following description of the drawings is some embodiments of the utility model, for those skilled in the art, without creative labor, other drawings can also be obtained according to these drawings.

[0023] Figure 1 It is the schematic diagram of the electronic balance provided by the utility model embodiment.

[0024] Figure 2 It is the schematic diagram of the mechanical hand provided by the utility model embodiment.

[0025] Reference signs:

[0026] 1, electronic balance;

[0027] 11, balance body;12, protection cover;121, cover plate;122, observation port;13, drive mechanism;131, guide rail;132, driving part;133, sliding block;134, adapter;

[0028] 2, mechanical hand;21, mechanical arm;22, clamping mechanism;23, liquid taking gun. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantage of the utility model more clear, the following will be combined with the drawings in the utility model, the technical scheme in the utility model is described clearly and completely, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] The following will be combined with the drawings in the utility model Figure 1The utility model discloses an electronic balance.

[0031] As Figure 1 The utility model provides an electronic balance 1 includes: balance body 11, shield 12 and drive mechanism 13. Shield 12 covers and is located balance body 11. Shield 12 is equipped with the opening. The opening is movably provided with cover plate 121. Drive mechanism 13 is transmission connection with cover plate 121, and drive mechanism 13 is used to drive cover plate 121 activity to open or close the opening.

[0032] In this embodiment, balance body 11 is used to place and weigh the article to be weighed, by covering shield 12 on balance body 11, shield 12 can play the role of protection and dust prevention to balance body 11, avoid the dust or sundries on the component (such as tray) of balance body 11 for carrying the article to be weighed to influence the measurement accuracy of balance body 11. Shield 12 is provided with an opening, and the movable cover plate 121 is arranged on the opening. When the cover plate 121 is moved to open the opening, the article to be weighed can be sent into the shield 12 from the outside of the shield 12 and placed on the balance body 11 for weighing. When the cover plate 121 is moved to close the opening, the shield 12 cooperates with the cover plate 121 to ensure the closed nature of the environment of the balance body 11. At the same time, by setting the drive mechanism 13 to drive the cover plate 121 to move to open or close the opening, it is not necessary to manually open and close the cover plate 121, and it is convenient to use. It can be understood that the drive mechanism 13 can also be linked with the feeding mechanism of the automatic detection line for linkage control, so as to realize the automatic opening and closing of the cover plate 121 in cooperation with the automatic detection line, which can be better applied to the automatic detection line.

[0033] The electronic balance 1 of the utility model, by covering shield 12 on balance body 11, to ensure that the component of balance body 11 for supporting and weighing is in a dust-free environment, thereby ensuring the measurement accuracy of balance body 11. Shield 12 is provided with an opening, and cover plate 121 for opening and closing the opening is arranged at the opening, so as to open the opening when the article to be weighed needs to be placed on balance body 11, and close the opening under other circumstances, so as to maintain the closed nature and cleanliness of shield 12 as much as possible. At the same time, by setting the drive mechanism 13 to drive the cover plate 121 to open and close the opening, it is not necessary to manually open and close the cover plate 121, and it is convenient to access the control system of the automatic detection line, realize the automatic opening and closing of the cover plate 121, effectively solve the defect that the detection personnel needs to frequently open and close the door when using the electronic balance for detection in the prior art, the operation is inconvenient, and it is difficult to adapt to the automatic detection line.

[0034] It can be understood that the balance body 11 generally comprises a base, a sensor, a tray, and a processor. The tray is arranged on the base in a liftable manner, the sensor is arranged between the tray and the base, and the sensor is electrically connected to the processor. The tray is used to hold the to-be-weighed object and press the sensor downward under the action of the weight of the to-be-weighed object. The sensor transmits a corresponding pressure signal to the processor, and the processor calculates the weight of the to-be-weighed object according to the pressure signal. A display screen electrically connected to the processor is further arranged on the base, so as to display the weight data of the to-be-weighed object.

[0035] Specifically, in some embodiments, as shown in Figure 1 The opening is located at the top of the protective cover 12 and directly above the balance body 11. The cover plate 121 is arranged in the opening in a slidable manner along the horizontal direction.

[0036] In the embodiment, by arranging the opening directly above the balance body 11, when the opening is in an open state, it is convenient for the detection personnel or the feeding mechanism to send the to-be-weighed object into the protective cover 12 through the opening from directly above and place it on the balance body 11, which is convenient to operate and also facilitates the arrangement of the moving path of the feeding mechanism. The cover plate 121 can be slid along the horizontal direction to cover or open the opening.

[0037] Further, in some embodiments, the protective cover 12 is provided with a sliding groove extending along the edge of the opening, and the cover plate 121 is arranged in the sliding groove in a slidable manner.

[0038] In the embodiment, by arranging the sliding groove on the protective cover 12 and arranging the cover plate 121 in the sliding groove, the sliding groove can guide the sliding of the cover plate 121, so that the sliding of the cover plate 121 is more stable and reliable; at the same time, the sliding groove is arranged at the edge of the opening, so that the combination of the cover plate 121 and the cover shell of the protective cover 12 is more compact, and the sealing performance is better.

[0039] Specifically, in some embodiments, as shown in Figure 1 The driving mechanism 13 comprises a guide rail 131, a driving member 132, and a sliding block 133. The guide rail 131 is arranged on one side of the protective cover 12 and extends along the sliding direction of the cover plate 121. The sliding block 133 is arranged in the guide rail 131 in a slidable manner and is connected to the cover plate 121. The driving member 132 is in transmission connection with the sliding block 133, and the driving member 132 is used to drive the sliding block 133 to drive the cover plate 121 to slide horizontally, so as to open or close the opening.

[0040] In the embodiment, the guide rail 131 is arranged on one side of the protective cover 12 and extends horizontally and parallel to the sliding path of the cover plate 121. The guide rail 131 is provided with a sliding block 133 which is connected to the cover plate 121 and can slide along the guide rail 131 under the driving of the driving member 132, and drives the cover plate 121 to open and close the opening, which is simple, convenient and practical.

[0041] It can be understood that the driving mechanism 13 can be arranged on the inner side or the outer side of the protective cover 12 according to actual needs. For example, the driving mechanism 13 can be arranged on the inner side of the protective cover 12 and fixed on the inner wall of the protective cover 12, so that the structure of the entire electronic balance 1 is more compact and occupies less space; or the driving mechanism 13 can also be arranged on the outer side of the protective cover 12 and does not occupy the space in the protective cover 12, so that the moving space of the feeding mechanism after the feeding mechanism sends the to-be-weighed articles into the protective cover 12 is larger and the feeding mechanism is more convenient to place the to-be-weighed articles on the balance body 11.

[0042] In one specific embodiment, as shown in Figure 1 The driving mechanism 13 further includes a bracket which is fixedly arranged on the outer side of the protective cover 12, and the guide rail 131 and the driving member 132 are fixedly installed on the bracket.

[0043] Optionally, the driving member 132 can be a driving device such as a cylinder or a motor.

[0044] In some embodiments, as shown in Figure 1 The driving mechanism 13 further includes an adapter 134, one end of which is connected to the sliding block 133 and the other end extends to the upper side of the cover plate 121 and is connected to the cover plate 121.

[0045] In the embodiment, the adapter 134 is a transition connection structure between the cover plate 121 and the sliding block 133, so as to drive the cover plate 121 to move to open and close the opening when the sliding block 133 slides. At the same time, by arranging the adapter 134 between the cover plate 121 and the sliding block 133, the sliding block 133, the guide rail 131, the driving member 132 and the like are kept at a distance from the protective cover 12, so as to reduce the interference points of the external feeding mechanism on the moving path when the feeding mechanism places the to-be-weighed articles.

[0046] Optionally, in some embodiments, the cover plate 121 is a transparent cover plate. In the embodiment, the cover plate 121 is arranged as a transparent cover plate, so that the user can observe the situation in the protective cover 12 during use, visually observe the running condition of the electronic balance 1, and maintain the electronic balance 1 when the running is abnormal.

[0047] Optionally, in some embodiments, as shown in Figure 1As shown, at least one side of the protective cover 12 is provided with an observation port 122, and the observation port 122 is provided with a transparent plate. In this embodiment, by providing the observation port 122 provided with the transparent plate on one side of the protective cover 12, the running condition of the electronic balance 1 can be visually observed by the user while ensuring the sealing of the protective cover 12, and the electronic balance 1 can be maintained.

[0048] In a second aspect, the utility model also provides an automatic weighing device, which comprises the electronic balance 1 provided in any of the above embodiments. Figure 1 and Figure 2 As shown, the automatic weighing device comprises a manipulator 2, a controller (not shown in the figure), and the electronic balance 1 provided in any of the above embodiments. The automatic weighing device has the advantages of the electronic balance 1, and thus, the description is omitted here.

[0049] The controller of this embodiment is electrically connected to the manipulator 2, the balance body 11, and the driving mechanism 13, respectively. The manipulator 2 is used to move the object to be weighed to the balance body 11 and feed the posture information of the manipulator 2 to the controller. The controller is used to control the driving mechanism 13 to drive the cover plate 121 to open or close the opening and control the balance body 11 to weigh.

[0050] In this embodiment, the manipulator 2 is used to place the object to be weighed on the balance body 11 through the opening of the protective cover 12 for weighing. Specifically, it can be understood that the manipulator 2 is usually provided with a plurality of angle sensors, speed sensors, and position sensors to detect the motion posture of the manipulator 2. The manipulator 2 can transmit the posture information to the controller in real time during the process of picking up and moving the object to be weighed. The controller can determine the posture of the manipulator 2 and the position of the end effector according to the posture information, so as to control the driving mechanism 13 to drive the cover plate 121 to open the opening before the end effector reaches the opening of the protective cover 12, so that the manipulator 2 can place the object to be weighed on the balance body 11 through the opening, and the balance body 11 can be controlled to weigh after the manipulator 2 completes the placement of the object to be weighed, and the driving mechanism 13 can be controlled to drive the cover plate 121 to close the opening after the manipulator 2 leaves the protective cover 12, so as to realize the automation of the entire weighing process.

[0051] It can be understood that by reasonably setting the control program in the controller, the automatic calibration and automatic skinning functions of the electronic balance 1 can be realized.

[0052] For example, in some embodiments, the automatic weighing device further comprises a weight storage device, wherein standard weights are stored in the weight storage device, and when the calibration program is running, the manipulator 2 takes the standard weights from the weight storage device and places them on the balance body 11, and the controller controls the balance body 11 to weigh and compare the measured weight data with the preset weight of the standard weights, so as to calibrate the electronic balance 1.

[0053] For example, in some embodiments, when the object to be weighed needs to be placed in a container and weighed together with the container, the manipulator 2 can first place the container on the balance body 11, and the controller can control the balance body 11 to weigh the container and zero the weighing data after the manipulator 2 places the container, thereby realizing the peeling function.

[0054] Specifically, in some embodiments, as shown in Figure 2 The manipulator 2 comprises a mechanical arm 21 and an end effector arranged at the end of the mechanical arm 21. The end effector comprises a clamping mechanism 22 and / or a liquid taking gun 23. The clamping mechanism 22 is used to clamp the object to be weighed. The liquid taking gun 23 is used to add solution to the container on the balance body 11.

[0055] In the present embodiment, the mechanical arm 21 is used to adjust the position and attitude of the end effector, and the end effector is used to pick up the object to be weighed, so as to transfer the object to be weighed to the balance body 11 for weighing. The end effector can be selected according to the form of the object to be weighed. When the object to be weighed is usually solid, the end effector can be the clamping mechanism 22, so as to clamp and move the object to be weighed; when the object to be weighed is a solution, the end effector can be the liquid taking gun 23, so as to suck and transfer the solution to be weighed. Alternatively, the mechanical arm 21 can also be provided with both the clamping mechanism 22 and the liquid taking gun 23, so as to be applicable to both liquid and solid objects to be weighed.

[0056] In some embodiments, the automatic weighing device further comprises a position detection device and an alarm. The position detection device is arranged above the balance body 11, and is used to detect the position information of the object to be weighed relative to the balance body 11. The position detection device and the alarm are respectively electrically connected with the controller. The controller is further used to control the working state of the alarm according to the position information.

[0057] In the embodiment, the position detection device is arranged above the balance body 11, and the position detection device can detect the position information of the to-be-weighed article relative to the balance body 11. The controller can determine whether the robot 2 places the to-be-weighed article on the set position of the balance body 11 according to the position information and the posture information of the robot 2. If the placement position of the to-be-weighed article deviates and the balance body 11 fails to successfully weigh the to-be-weighed article, the controller controls the alarm to alarm to prompt the user to check the fault cause and perform maintenance and debugging.

[0058] For example, the robot 2 can fail to successfully grasp the to-be-weighed article, or the to-be-weighed article falls during movement, or the robot 2 fails to place the to-be-weighed article on the designated position of the balance body 11. After the robot 2 completes the placement action, the controller controls the position detection device to detect the position information of the to-be-weighed article relative to the balance body 11. When the detected position information does not conform to the preset designated position information, the controller controls the alarm to alarm.

[0059] Optionally, the position detection device can be a photoelectric switch.

[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic balance, characterized by The electronic balance comprises a balance body, a protective cover arranged on the balance body, an opening provided on the protective cover, a cover plate movably arranged on the opening, a driving mechanism in transmission connection with the cover plate and used for driving the cover plate to move to open or close the opening, a guide rail, a driving member, a sliding block and a bracket, the bracket being fixedly arranged on the outer side of the protective cover, the guide rail and the driving member being arranged on the bracket, the bracket and the guide rail being located on one side of the protective cover, the guide rail extending along the sliding direction of the cover plate, the sliding block being slidably arranged on the guide rail and connected with the cover plate, the driving member being in transmission connection with the sliding block and used for driving the sliding block to drive the cover plate to slide horizontally to open or close the opening. The electronic balance is provided with a mechanical hand, and the driving mechanism is used for driving the cover plate to open the opening before the end effector of the mechanical hand reaches the protective cover, so that the mechanical hand can place the object to be weighed on the balance body through the opening. The opening is located on the top of the protective cover and directly above the balance body, and the cover plate is slidably arranged on the opening in the horizontal direction. The protective cover is provided with a sliding groove extending along the edge of the opening, and the cover plate is slidably arranged in the sliding groove. The driving mechanism further comprises an adapter, one end of the adapter being connected with the sliding block, and the other end extending to the upper side of the cover plate and being connected with the cover plate. The cover plate is a transparent cover plate.

2. The electronic balance according to claim 1, characterized in that At least one side of the protective cover is provided with an observation port, and a transparent plate is arranged on the observation port.

3. The electronic balance according to claim 2, characterized in that The electronic balance comprises a mechanical hand, a controller and the electronic balance according to any one of claims 1 to 6.

4. The electronic balance according to claim 1, characterized in that The controller is electrically connected with the mechanical hand, the balance body and the driving mechanism respectively, the mechanical hand is used for moving the object to be weighed to the balance body and feeding back the posture information of the mechanical hand to the controller, and the controller is used for controlling the driving mechanism to drive the cover plate to open or close the opening and controlling the balance body to weigh.

5. The electronic balance according to any one of claims 1 to 4, characterized in that The mechanical hand comprises a mechanical arm and an end effector arranged on the mechanical arm, and the end effector comprises a clamping mechanism and / or a liquid taking gun.

6. The electronic balance according to any one of claims 1 to 4, characterized in that The clamping mechanism is used for clamping the object to be weighed, and the liquid taking gun is used for adding a solution into a container on the balance body.

7. An automatic weighing apparatus characterized by comprising: The electronic balance further comprises a position detection device and an alarm. The position detection device is arranged above the balance body, is used for detecting the position information of the object to be weighed relative to the balance body, and is electrically connected with the controller, and the controller is further used for controlling the working state of the alarm according to the position information. ​ 8. The automatic weighing apparatus according to claim 7, characterized in that, ​ ​ 9. The automatic weighing apparatus according to claim 7, characterized in that, ​ ​

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