阅读说明：本技术 称重机 (Weighing machine ) 是由 刘昱辕 陈琨 占根生 王志伟 于 2021-09-28 设计创作，主要内容包括：本发明公开一种称重机,该称重机包括机座、称体、搁置机构以及顶升机构；称体设于机座,并具有称重台面；搁置机构可升降地设于机座,并具有搁置台面,搁置台面所在平面与称重台面所在平面平行设置；顶升机构设于机座,并与搁置机构传动连接,以驱动搁置机构升降；其中,搁置机构升降并具有第一状态和第二状态；搁置机构于第一状态时,搁置台面高于称重台面,用于搁置物件；搁置机构于第二状态时,搁置台面低于称重台面,称重台面用于放置物件,以使称体对物件称重。本发明技术方案可解决在取放物件时极容易对称重台面产生较大的冲击力而使称体损坏的问题。(The invention discloses a weighing machine, which comprises a machine base, a weighing body, a placing mechanism and a jacking mechanism, wherein the machine base is provided with a plurality of weighing holes; the scale body is arranged on the base and is provided with a weighing table-board; the placing mechanism is arranged on the base in a lifting manner and is provided with a placing table board, and the plane of the placing table board is parallel to the plane of the weighing table board; the jacking mechanism is arranged on the base and is in transmission connection with the placement mechanism so as to drive the placement mechanism to lift; the shelving mechanism is lifted and provided with a first state and a second state; when the placing mechanism is in a first state, the placing table surface is higher than the weighing table surface and is used for placing the object; when the laying mechanism is in the second state, the laying table top is lower than the weighing table top, and the weighing table top is used for placing an object so that the object is weighed by the weighing body. The technical scheme of the invention can solve the problem that the weighing body is easily damaged due to the large impact force generated by the weighing table surface when the object is taken and placed.)

1. A weighing machine, comprising:

a machine base;

the scale body is arranged on the base and is provided with a weighing table top;

the placing mechanism is arranged on the base in a lifting manner and is provided with a placing table top, and the plane of the placing table top is parallel to the plane of the weighing table top; and

the jacking mechanism is arranged on the base and is in transmission connection with the placement mechanism so as to drive the placement mechanism to lift;

wherein the shelving mechanism is elevated and has a first state and a second state; when the placing mechanism is in a first state, the placing table surface is higher than the weighing table surface and is used for placing the object; when the laying mechanism is in the second state, the laying table top is lower than the weighing table top, and the weighing table top is used for placing an object so that the object can be weighed by the weighing body.

2. The weighing machine of claim 1, wherein the resting mechanism includes:

the transmission structure is arranged on the base in a liftable mode and is in transmission connection with the jacking mechanism, and the jacking mechanism drives the transmission structure to lift; and

the first moving plate is arranged above the transmission structure and is lifted along with the transmission structure, and the first moving plate is provided with the laying table board.

3. The weighing machine of claim 2, wherein the transmission structure includes:

the second moving plate is connected to the jacking mechanism in a transmission mode, and the jacking mechanism drives the second moving plate to lift; and

the guide column is arranged above the second moving plate and extends in the vertical direction to lift along with the second moving plate; the first moving plate is arranged at one end, far away from the second moving plate, of the guide column and is arranged opposite to the second moving plate so as to lift along with the guide column, and the first moving plate is provided with a shelving table top back to the second moving plate.

4. The weighing machine according to claim 3, wherein an accommodating cavity is formed in the machine base, and a limiting hole communicated with the accommodating cavity is formed in the table top of the machine base;

the scale body is arranged on the table top of the base, the second movable plate is arranged in the accommodating cavity in a lifting manner, one end of the guide column penetrates through the limiting hole and is inserted in the accommodating cavity to be connected with the second movable plate, and the first movable plate is arranged above the table top of the base;

the jacking mechanism is arranged in the accommodating cavity and is positioned below the second moving plate so as to be in transmission connection with the second moving plate.

5. The weighing machine according to claim 4, wherein the cavity wall of the accommodating cavity is provided with a slide rail, the slide rail extends along the lifting direction of the second moving plate, and the side wall of the second moving plate is provided with a slide block which is connected with the slide rail in a sliding manner.

6. The weighing machine according to claim 5, wherein there are two slide rails, the two slide rails are respectively disposed on two opposite walls of the accommodating cavity, the two opposite side walls of the second movable plate are respectively provided with the slide blocks, and each slide block is slidably connected to one slide rail.

7. The weighing machine of claim 4, further comprising a locating sleeve, wherein the locating sleeve is arranged in the limiting hole in a penetrating manner, and the guide column is arranged in the locating sleeve in a penetrating manner.

8. The weighing machine of claim 3, wherein the guide posts are spaced apart from one another.

9. The weighing machine according to claim 1, wherein the resting table top is provided with avoidance holes penetrating to the surface opposite to the resting table top, and the weighing table top is positioned in the area range of the avoidance holes;

the placing mechanism is lifted, so that the weighing table top extends out through the avoidance hole and is higher than the placing table top or retracts back through the avoidance hole and is lower than the placing table top.

10. The weighing machine of any one of claims 1 to 9, further comprising a sensor provided to the base with a sensing port thereof disposed toward the resting deck.

Technical Field

The invention relates to the technical field of weighing equipment, in particular to a weighing machine.

Background

When the object is weighed, the object is usually directly placed on the weighing table surface of the weighing body for weighing at present. However, when weighing an object with a large weight, the object needs to be placed on the weighing table top by using a hoisting device, or the object needs to be taken away from the weighing table top by using the hoisting device; and lifting device is at the in-process of transportation article, mainly hangs the article through hoist and mount area and the couple on it, and at this moment, the hoist and mount area can take place elastic deformation, causes the article to take place great rocking when transporting the article easily. Therefore, when the object is taken and placed, the weighing platform can generate large impact force very easily, and the weighing body is damaged.

Disclosure of Invention

The invention mainly aims to provide a weighing machine, which aims to solve the problem that a weighing body is damaged due to the fact that a large impact force is easily generated on a weighing table surface when an object is taken and placed.

In order to achieve the above object, the present invention provides a weighing machine, including:

a machine base;

the scale body is arranged on the base and is provided with a weighing table top;

the placing mechanism is arranged on the base in a lifting manner and is provided with a placing table top, and the plane of the placing table top is parallel to the plane of the weighing table top; and

the jacking mechanism is arranged on the base and is in transmission connection with the placement mechanism so as to drive the placement mechanism to lift;

wherein the shelving mechanism is elevated and has a first state and a second state; when the placing mechanism is in a first state, the placing table surface is higher than the weighing table surface and is used for placing the object; when the laying mechanism is in the second state, the laying table top is lower than the weighing table top, and the weighing table top is used for placing an object so that the object can be weighed by the weighing body.

In an embodiment of the present invention, the resting mechanism comprises:

the transmission structure is arranged on the base in a liftable mode and is in transmission connection with the jacking mechanism, and the jacking mechanism drives the transmission structure to lift; and

the first moving plate is arranged above the transmission structure and is lifted along with the transmission structure, and the first moving plate is provided with the laying table board.

In an embodiment of the present invention, the transmission structure includes:

the second moving plate is connected to the jacking mechanism in a transmission mode, and the jacking mechanism drives the second moving plate to lift; and

the guide column is arranged above the second moving plate and extends in the vertical direction to lift along with the second moving plate; the first moving plate is arranged at one end, far away from the second moving plate, of the guide column and is arranged opposite to the second moving plate so as to lift along with the guide column, and the first moving plate is provided with a shelving table top back to the second moving plate.

In an embodiment of the present invention, an accommodating cavity is formed in the base, and a limit hole communicating with the accommodating cavity is formed on a table-board of the base;

the scale body is arranged on the table top of the base, the second movable plate is arranged in the accommodating cavity in a lifting manner, one end of the guide column penetrates through the limiting hole and is inserted in the accommodating cavity to be connected with the second movable plate, and the first movable plate is arranged above the table top of the base;

the jacking mechanism is arranged in the accommodating cavity and is positioned below the second moving plate so as to be in transmission connection with the second moving plate.

In an embodiment of the invention, a slide rail is arranged on a cavity wall of the accommodating cavity, the slide rail extends along a lifting direction of the second moving plate, and a slide block is arranged on a side wall of the second moving plate and is slidably connected to the slide rail.

In an embodiment of the invention, two slide rails are provided, the two slide rails are respectively disposed on two opposite cavity walls of the accommodating cavity, the two opposite side walls of the second moving plate are both provided with the slide blocks, and each slide block is slidably connected to one slide rail.

In an embodiment of the invention, the weighing machine further comprises a positioning sleeve, the positioning sleeve is arranged in the limiting hole in a penetrating manner, and the guide column is arranged in the positioning sleeve in a penetrating manner.

In an embodiment of the present invention, the guide posts are provided in a plurality, and the guide posts are arranged at intervals.

In an embodiment of the invention, the placing table top is provided with an avoiding hole penetrating to the surface opposite to the placing table top, and the weighing table top is positioned in the area of the avoiding hole;

the placing mechanism is lifted, so that the avoidance hole of the weighing table top extends out to be higher than the placing table top or retracts to be lower than the placing table top through the avoidance hole.

In an embodiment of the invention, the weighing machine further comprises a sensor, the sensor is arranged on the base, and an induction port of the sensor is arranged towards the resting table.

When the weighing machine is used for weighing an object with larger weight, the placing mechanism is driven by the jacking mechanism to rise from the second state to the first state, so that the placing platform surface of the placing mechanism is higher than the weighing platform surface of the weighing body, and at the moment, the object can be placed on the placing platform surface manually or by hoisting equipment; after the object is stable, the placing mechanism can be driven by the jacking mechanism to be lowered from the first state to the second state, in the process, the object is placed on the weighing table top after the object on the placing table top contacts the weighing table top of the scale body, and at the moment, the object can be weighed through the scale body; after weighing is finished, the jacking mechanism works again to drive the placing mechanism to ascend from the second state to the first state, in the process, after the placing table top is in contact with the object on the weighing table top, the object is placed on the placing table top and ascends along with the placing mechanism to be separated from the weighing table top, and at the moment, the object can be taken away through the hoisting equipment so as to finish weighing the object; therefore, when the object is taken and placed, the object can be firstly placed on the shelving table top or taken away from the shelving table top, the object is prevented from being directly placed on the weighing table top or directly taken away from the weighing table top, and therefore, in the process of transporting the material, the hoisting equipment only can generate large impact force on the shelving table top when the object is taken and placed, and cannot generate large impact force on the weighing table top even though the material is greatly shaken, and the problem that the weighing body is damaged due to the fact that the large impact force is generated on the weighing table top when the object is taken and placed is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a weighing machine according to the present invention;

FIG. 2 is a front view of one embodiment of the weighing machine of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a top view of an embodiment of the weighing machine of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Weighing machine	3111	Sliding block
10	Engine base	312	Guide post
				11	Containing cavity	32	First moving plate
111	Sliding rail	321	Shelf table
				20	Weighing body	3211	Avoiding hole
21	Weighing table	40	Jacking mechanism
				30	Laying mechanism	50	Locating sleeve
31	Transmission structure	60	Sensor with a sensor element
				311	Second moving plate

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a weighing machine 100, which aims to solve the problem that a weighing body 20 is damaged due to the fact that large impact force is easily generated on a weighing table 21 when an object is taken and placed.

The following will explain the specific structure of the weighing machine 100 of the present invention:

referring to fig. 1 to 4, in an embodiment of the weighing machine 100 of the present invention, the weighing machine 100 includes a base 10, a scale body 20, a resting mechanism 30 and a jacking mechanism 40; the scale body 20 is arranged on the machine base 10 and is provided with a weighing table top 21; the placing mechanism 30 is arranged on the machine base 10 in a lifting manner and is provided with a placing table surface 321, and the plane of the placing table surface 321 is parallel to the plane of the weighing table surface 21; the jacking mechanism 40 is arranged on the machine base 10 and is in transmission connection with the placement mechanism 30 so as to drive the placement mechanism 30 to lift; wherein the rest mechanism 30 is raised and lowered and has a first state and a second state; when the holding mechanism 30 is in the first state, the holding table 321 is higher than the weighing table 21 for holding the object; when the resting mechanism 30 is in the second state, the resting table 321 is lower than the weighing table 21, and the weighing table 21 is used for placing an object, so that the scale body 20 weighs the object.

It can be understood that, when the weighing machine 100 of the present invention is used for weighing an object with a large weight, the jacking mechanism 40 is driven to drive the placing mechanism 30 to ascend from the second state to the first state, so that the placing table 321 of the placing mechanism 30 is higher than the weighing table 21 of the scale body 20, and at this time, the object can be placed on the placing table 321 manually or by a hoisting device; after the object is stable, the placing mechanism 30 can be driven by the jacking mechanism 40 to be lowered from the first state to the second state, in the process, when the object on the placing table 321 contacts the weighing table 21 of the scale body 20, the object is placed on the weighing table 21, and at the moment, the object can be weighed by the scale body 20; after weighing is finished, the jacking mechanism 40 works again to drive the placing mechanism 30 to ascend from the second state to the first state, in the process, after the placing table surface 321 contacts the object on the weighing table surface 21, the object is placed on the placing table surface 321 to ascend along with the placing mechanism 30 until the object is separated from the weighing table surface 21, and at the moment, the object can be taken away through the hoisting equipment so as to finish weighing the object; therefore, when the object is taken and placed, the object can be firstly placed on the placing table top 321, or the object is taken away from the placing table top 321, so that the object is prevented from being directly placed on the weighing table top 21, or the object is directly taken away from the weighing table top 21, in the process of transporting the material, the hoisting equipment only generates large impact force on the placing table top 321 when the object is taken and placed, but does not generate large impact force on the weighing table top 21, and the problem that the weighing body 20 is damaged due to the large impact force generated on the weighing table top 21 when the object is taken and placed is solved.

In addition, the lifting speed of the shelving mechanism 30 can be controlled by the jacking mechanism 40, so that the impact force of the object on the weighing table 21 when the object is placed on or taken away from the weighing table 21 can be controlled by the lifting speed; for example, when an object with a large weight needs to be weighed, the lifting speed of the placing mechanism 30 can be reduced, so that the impact force of the object on the weighing platform 21 can be reduced; when the object with smaller weight needs to be weighed, the lifting speed of the shelving mechanism 30 can be increased, and because the impact force of the object with smaller weight on the weighing table 21 is smaller, the impact force of the object on the weighing table 21 can be reduced, and meanwhile, the weighing efficiency can be effectively improved.

In practical application, the jacking mechanism 40 can be located below or on the side of the placing mechanism 30, so as to smoothly drive the placing mechanism 30 to ascend and descend, and prevent the jacking mechanism 40 from blocking the space above the placing table 321, so that the object can be smoothly placed on the placing table 321.

Further, with reference to fig. 3 in combination, in an embodiment of the weighing machine 100 of the present invention, the resting mechanism 30 includes a transmission structure 31 and a first moving plate 32; the transmission structure 31 is arranged on the machine base 10 in a lifting manner and is in transmission connection with the jacking mechanism 40, and the jacking mechanism 40 drives the transmission structure 31 to lift; the first moving plate 32 is disposed above the transmission structure 31 to be lifted up and down with the transmission structure 31, and the first moving plate 32 has the resting table 321.

With such an arrangement, the jacking mechanism 40 can be driven to lift through the transmission structure 31, so as to switch the placing mechanism 30 between the first state and the second state, and thus the placing table 321 of the first moving plate 32 can be lifted to be higher than the weighing table 21 of the scale body 20, or the placing table 321 of the first moving plate 32 can be lowered to be lower than the weighing table 21 of the scale body 20.

Further, referring to fig. 3 in combination, in an embodiment of the weighing machine 100 of the present invention, the transmission mechanism 31 includes a second moving plate 311 and a guide column 312; the second moving plate 311 is in transmission connection with the jacking mechanism 40, and the jacking mechanism 40 drives the second moving plate 311 to lift; the guide posts 312 are disposed above the second moving plate 311, and extend in the vertical direction to ascend and descend with the second moving plate 311; the first moving plate 32 is disposed at one end of the guide column 312 far away from the second moving plate 311, and is disposed opposite to the second moving plate 311 so as to be lifted up and down along with the guide column 312, and the first moving plate 32 has the resting table 321 facing away from the second moving plate 311.

When the jacking mechanism 40 works, the second moving plate 311 can be driven to ascend and descend in the vertical direction, the second moving plate 311 can drive the guide column 312 to ascend and descend in the vertical direction, and then the guide column 312 can drive the first moving plate 32 to ascend and descend in the vertical direction, so that the objects on the placing table 321 can be stably driven to ascend and descend in the vertical direction, and the impact force of the objects on the weighing table 21 can be reduced as much as possible.

Specifically, the guide post 312 may be fixed to the second moving plate 311 using a screw, and similarly, the first moving plate 32 may be fixed to the guide post 312 using a screw.

Further, in order to ensure the stability of the first moving plate 32 during the lifting process and further improve the stability of the object during the lifting process, so as to further reduce the impact force of the object on the weighing platform 21, a plurality of guide posts 312 arranged at intervals can be arranged, so that the two ends of each guide post 312 are connected with the first moving plate 32 and the second moving plate 311, the balance degree of the placing platform 321 in the first moving plate 32 can be improved through the plurality of guide posts 312, and further the balance of the object when the object is placed on the placing platform 321 is ensured, so that the object can be placed on the weighing platform 21 more stably during the lifting process.

Referring to fig. 3 in combination, in an embodiment of the weighing machine 100 of the present invention, an accommodating cavity 11 is formed in the machine base 10, and a limit hole communicating with the accommodating cavity 11 is formed on a table top of the machine base 10; the scale body 20 is arranged on the table top of the machine base 10, the second moving plate 311 is arranged in the accommodating cavity 11 in a lifting manner, one end of the guide column 312 penetrates through the limiting hole and is inserted into the accommodating cavity 11 to be connected with the second moving plate 311, and the first moving plate 32 is arranged above the table top of the machine base 10; the jacking mechanism 40 is arranged in the accommodating cavity 11 and is positioned below the second moving plate 311 so as to be in transmission connection with the second moving plate 311.

With such arrangement, in the assembling process, the scale body 20 can be firstly fixedly arranged on the table top of the machine base 10; then, the jacking mechanism 40 and the second moving plate 311 are installed in the accommodating cavity 11 of the machine base 10, and the second moving plate 311 is connected to the lifting part of the jacking mechanism 40; then, one end of the guide column 312 is inserted into the accommodating cavity 11 to be connected with the upper surface of the second moving plate 311 by penetrating through the limiting hole of the base 10; then, connecting the first moving plate 32 to one end of the guide column 312 above the table top of the machine base 10, so that the first moving plate 32 and the second moving plate 311 are oppositely arranged, and the resting table top 321 of the first moving plate 32 is parallel to the weighing table top 21 of the weighing body 20; thus, the assembly of the machine base 10, the balance body 20, the resting mechanism 30 and the jacking mechanism 40 is completed.

In addition, by accommodating the jacking mechanism 40 and part of the resting mechanism 30 in the accommodating cavity 11, the internal space of the machine base 10 can be fully utilized to reduce the occupied space of the whole structure, and the part of the structure can be protected and the appearance of the weighing machine 100 can be beautified. Moreover, the guide posts 312 penetrate through the limiting holes of the base 10, so that the guide posts 312 can be guided through the limiting holes, and the guide posts 312 are limited through the hole walls of the limiting holes, thereby preventing the guide posts 312 from being shifted or inclined in the lifting process, and further preventing the stability of the first moving plate 32 in the lifting process from being affected, and further avoiding the influence on the stability of the objects in the lifting process and further avoiding the increase of the impact force of the objects on the weighing table 21.

Moreover, the jacking mechanism 40 comprises a jacking cylinder and a cylinder connecting plate; the jacking cylinder is arranged in the accommodating cavity 11 and is provided with a lifting part; the jacking cylinder is fixedly connected to the base 10 through a cylinder connecting plate, and the second moving plate 311 is connected to the lifting part of the jacking cylinder so as to lift along with the lifting part of the jacking cylinder; therefore, the second moving plate 311 can be smoothly driven to ascend and descend under the action of the jacking cylinder, and the whole shelving mechanism 30 can be smoothly driven to ascend and descend.

Further, referring to fig. 3, in an embodiment of the weighing machine 100 of the present invention, a slide rail 111 is disposed on a wall of the accommodating cavity 11, the slide rail 111 extends along a lifting direction of the second moving plate 311, a slider 3111 is disposed on a side wall of the second moving plate 311, and the slider 3111 is slidably connected to the slide rail 111.

So set up, the second moving plate 311 is in the lift in-process, alright through the cooperation of slider 3111 and slide rail 111 to make the second moving plate 311 stably lift along the extending direction of slide rail 111, so, alright prevent that the second moving plate 311 from taking place phenomenons such as offset or slope in the lift in-process, and influence the stability of first moving plate 32 in the lift in-process, thereby further avoid influencing the stability of article in the lift in-process, and then further avoid increasing the impact force of article to weighing mesa 21.

Further, referring to fig. 3, in an embodiment of the weighing machine 100 of the present invention, two slide rails 111 are provided, the two slide rails 111 are respectively disposed on two opposite cavity walls of the accommodating cavity 11, the two opposite side walls of the second moving plate 311 are provided with the sliding blocks 3111, and each sliding block 3111 is slidably connected to one slide rail 111.

So set up, the second movable plate 311 is in the lift in-process, alright through the cooperation of two sliders 3111 and two slide rails 111, not only can further guarantee the stability of second movable plate 311 in the lift in-process, still can make second movable plate 311 guarantee in the lift in-process and balance, and then guarantee to shelve the balance of mesa 321 in first movable plate 32, so, first movable plate 32 takes the animal piece in-process that descends, alright make the bottom surface of article contact with the mesa 21 of weighing body 20 simultaneously to the impact force of fully reduced article to the mesa 21 of weighing.

Further, referring to fig. 1 and fig. 3 in combination, in an embodiment of the weighing machine 100 of the present invention, the weighing machine 100 further includes a positioning sleeve 50, the positioning sleeve 50 is disposed through the limiting hole, and the guiding column 312 is disposed through the positioning sleeve 50.

So set up, alright increase through position sleeve 50 with the area of contact between the guide post 312, the inner wall through position sleeve 50 is spacing to guide post 312 to further improve the location effect to guide post 312, thereby further prevent that guide post 312 from taking place phenomenons such as offset or slope in the lift process.

Referring to fig. 1 and fig. 4, in an embodiment of the weighing machine 100 of the present invention, the resting table 321 is provided with an avoiding hole 3211 penetrating to a surface opposite to the resting table, and the weighing table 21 is located within a range of an area where the avoiding hole 3211 is located; wherein the rest mechanism 30 is raised and lowered to extend the weighing platform 21 through the avoiding hole 3211 to be disposed higher than the rest platform 321 or retract through the avoiding hole 3211 to be disposed lower than the rest platform 321.

With such an arrangement, during the lifting process of the first moving plate 32, the first moving plate can avoid the scale body 20 through the avoiding hole 3211, so that the resting table 321 of the resting mechanism 30 can smoothly rise above the weighing table 21, and correspondingly, the weighing table 21 retracts through the avoiding hole 3211 to be lower than the resting table 321, or the resting table 321 of the resting mechanism 30 can smoothly descend to be lower than the weighing table 21, and correspondingly, the weighing table 21 extends through the avoiding hole 3211 to be higher than the resting table 321; in addition, when the placing table 321 is lowered to be lower than the weighing table 21, the weighing table 21 is located in the area range where the avoiding hole 3211 is located, and the avoiding hole 3211 is formed in the middle of the placing table 321, in this arrangement, when the placing table 321 is raised to be higher than the weighing table 21 and an object is placed on the placing table 321, the middle of the bottom of the object is opposite to the weighing table 21, at this time, when the placing table 321 drives the object to be lowered and the object is placed on the weighing table 21, the object is supported by the weighing table 21, and the middle of the bottom of the object is in contact with the weighing table 21, so that the object can be stably placed on the weighing table 21, and the weighing accuracy of the object by the scale 20 is guaranteed.

Referring to fig. 1 to fig. 3, in an embodiment of the weighing machine 100 of the present invention, the weighing machine 100 further includes a sensor 60, the sensor 60 is disposed on the machine base 10, and a sensing port of the sensor 60 is disposed toward the resting table 321.

With such an arrangement, when the sensor 60 senses that the articles are placed on the placing table 321, a signal is transmitted to the control end, so that the jacking mechanism 40 is controlled by the control end to work, and the placing mechanism 30 can be driven to descend by the jacking mechanism 40.

Specifically, the sensor 60 may be an opposite-emitting optical fiber sensor 60, and the opposite-emitting optical fiber sensor 60 includes a signal emitting end and a signal receiving end, wherein the signal emitting end and the signal receiving end are respectively disposed on two opposite sides of the resting table 321, when the signal receiving end receives the optical fiber signal emitted from the signal emitting end, no object is placed on the resting table 321, and when the signal receiving end cannot receive the optical fiber signal emitted from the signal emitting end, an object is placed on the resting table 321.

In addition, in order to ensure the installation stability of the sensor 60, a fixing support may be provided on the top surface of the housing 10, so that the sensor 60 may be fixed by installing the sensor 60 on the fixing support.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.