Electromagnetic signal shielding device based on conveying belt

Abstract

The utility model belongs to the technical field of chip detection, and particularly relates to an electromagnetic signal shielding device based on a conveying belt, which comprises a feeding shielding door mechanism, a discharging shielding door mechanism and a detection shielding cover mechanism, the two sides of the detection shielding case mechanism are communicated, the other surfaces of the detection shielding case mechanism are closed, the feeding shielding door mechanism and the detection shielding case mechanism are arranged on the two sides of the detection shielding case mechanism respectively, and a shielding bin is defined by the feeding shielding door mechanism and the detection shielding case mechanism; the feeding shielding door mechanism is provided with a detection inlet, the discharging shielding door mechanism is provided with a detection outlet, the feeding shielding door mechanism and the discharging shielding door mechanism are respectively provided with shielding doors matched with the detection inlet and the detection outlet, and the shielding doors have an opening motion state and a closing motion state. And conveying belts are respectively arranged on the outer side of the detection inlet, the outer side of the detection outlet and between the detection inlet and the detection outlet. The problems that in the prior art, products are difficult to enter a shielding bin, and the shielding bin is complex in structure are solved, the products can enter the shielding bin smoothly without damage, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chip detection, and specifically relates to an electromagnetic signal shielding device based on a conveyor belt. Background Technique

[0002] In the existing conveyor belt system, in order to cope with the electromagnetic signal interference suffered by chips during the detection process, an electromagnetic signal shielding device is usually installed on the conveyor belt. The device mainly includes a shielding chamber, and the conveyor belt transports the product to be tested into the shielding chamber for detection. Strip-shaped copper mesh door curtains are provided at the inlet and outlet of the shielding chamber, and the door curtains block the interference of external electromagnetic signals in a hanging form to achieve the shielding effect. However, this shielding structure has the following deficiencies:

[0003] 1. The product to be tested needs to hit the shielding door curtain when entering the shielding chamber to pass through. To ensure the shielding effect, the door curtain usually adds weights to maintain its verticality. However, this design increases the resistance when the product enters the shielding chamber. Especially for lighter products, it is easy to slip on the conveyor belt and cannot smoothly enter the shielding chamber, and may even be overturned due to hitting the door curtain, resulting in product damage.

[0004] 2. After the product enters the shielding chamber, the door curtain must quickly return to a completely vertical state to maintain the shielding effect. This requires the shielding chamber to have sufficient length so that the product can be fully inside the chamber before detection. Due to this requirement, the length of the shielding chamber must be increased, resulting in an increase in material costs and the corresponding increase in the space occupied by the equipment.

[0005] 3. Although the door curtain maintains a certain verticality through weights, since the door curtain is composed of multiple copper meshes, there is still a certain degree of floating in the structure, which results in its electromagnetic shielding effect being unstable and unreliable, and cannot effectively shield external electromagnetic signals for a long time.

[0006] Therefore, a shielding conveyor device that can solve the above problems is needed. Content of the Utility Model

[0007] In view of the defects of the prior art, the present application proposes an electromagnetic signal shielding device based on a conveyor belt, which realizes the smooth and non-destructive entry of products into the shielding chamber, and can perform functions such as chip data acquisition, reading, and analysis on the products under reliable electromagnetic shielding conditions, reduces the probability of product data analysis errors, and improves product quality and production efficiency.

[0008] To achieve the technical purpose of the present utility model, the following technical solutions will be adopted:

[0009] An electromagnetic signal shielding device based on a conveyor belt, comprising a feeding shielding door mechanism, a discharging shielding door mechanism and a detection shielding cover mechanism; both sides of the detection shielding cover mechanism are through, and the rest of the surfaces are closed. The feeding shielding door mechanism and the detection shielding cover mechanism are respectively arranged on both sides of the detection shielding cover mechanism and enclose a shielding bin with the detection shielding cover mechanism.

[0010] The feeding shielding door mechanism is provided with a detection inlet, the discharging shielding door mechanism is provided with a detection outlet, and the feeding shielding door mechanism and the discharging shielding door mechanism are each provided with a shielding door matching the detection inlet and the detection outlet; conveyor belts are respectively arranged outside the detection inlet, outside the detection outlet, and between the detection inlet and the detection outlet, and the conveyor belts are used for conveying materials; the shielding door has two motion states of opening and closing, and is used for opening and closing the detection inlet and the detection outlet.

[0011] Further, the feeding shielding door mechanism includes a shielding door panel, a door frame plate main body and a shielding guide plate; the door frame plate main body is installed on one side of the detection shielding cover mechanism, the lower part in the middle is a closed surface, and the upper part in the middle is provided with a detection inlet; the shielding door panel is arranged above the detection inlet and is rotatably connected to the door frame plate main body, the shielding guide plate is arranged below the detection inlet and is vertically slidably connected to the door frame plate main body, and the shielding door panel and the shielding guide plate form a complete shielding door.

[0012] Further, the shielding door panel opens and closes the upper part of the detection inlet by rotation, and the shielding door panel rotates outward to the detection inlet to open the upper part of the detection inlet; when the shielding guide plate moves upward, it abuts against the bottom of the shielding door panel and closes the lower part of the detection inlet, and when the shielding guide plate moves downward, it moves away from the bottom of the shielding door panel and opens the lower part of the detection inlet.

[0013] Further, a buffer pad is arranged on the contact surface between the shielding door panel and the door frame plate main body; the feeding shielding door mechanism further includes a shielding door protective cover; the shielding door protective cover is arranged outside the top of the door frame plate main body, and the shielding door protective cover is provided with a buffer member that contacts the shielding door panel after it is opened in place.

[0014] Further, the shielding door panel, the door frame plate main body, the shielding guide plate and the shell of the detection shielding cover mechanism are made of materials resistant to electromagnetic interference shielding.

[0015] Further, the shielding door area of the feeding shielding door mechanism ≥ the opening area of the detection inlet, and the shielding door area of the discharging shielding door mechanism ≥ the opening area of the detection outlet.

[0016] Further, the thicknesses of the feeding shielding door mechanism and the discharging shielding door mechanism are less than any dimension of the material.

[0017] Further, the shielding doors of the feeding shielding door mechanism and the discharging shielding door mechanism are opened and closed simultaneously.

[0018] Further, the bottom heights of the detection inlet and the detection outlet are ≤ the top conveying surface height of the conveyor belt.

[0019] Further, the feeding shielding door mechanism and the discharging shielding door mechanism have the same structure and are symmetrically arranged.

[0020] The beneficial effects of the present utility model are as follows:

[0021] First, the shielding doors of the feeding shielding door mechanism and the discharging shielding door mechanism of the present utility model can be opened and closed respectively when the material enters and exits the detection shielding cover mechanism, realizing the smooth and non-destructive entry of the product into the detection shielding cover mechanism. This not only ensures the smooth passage of the material but also provides a reliable electromagnetic shielding environment during the material detection process.

[0022] Second, in the preferred implementation mode, the shielding doors for feeding and discharging of the present utility model can simultaneously perform the operations of material entry and exit when the shielding doors are opened, which helps to maintain the continuity of material detection and improves the detection efficiency. The shielding doors rotate outward to open, without occupying the space inside the shielding bin, which can greatly reduce the size of the equipment, thereby reducing the material cost of the shielding bin and the floor area. The entire outer cover of the shielding bin is made of a material resistant to electromagnetic signal interference, improving the shielding effect against electromagnetic signal interference.

[0023] Third, in the preferred implementation mode, the design of the shielding door of the present utility model also takes into account the height connection with the conveyor belt, avoiding the jamming phenomenon of the material during the conveying process and further ensuring the stable operation of the device.

[0024] Fourth, in the preferred implementation mode, the feeding shielding door mechanism and the discharging shielding door mechanism of the present utility model have the same structure and are symmetrically arranged, simplifying the design and manufacture of the device.

[0025] Fifth, in the preferred implementation mode, a buffer pad is provided on the contact surface between the main body of the door frame plate and the shielding door plate of the present utility model. When the shielding door plate is closed, the hard collision is reduced, which not only reduces the wear of the device but also extends the service life of the equipment. At the same time, the noise is reduced and the operation smoothness is improved.

[0026] Sixth, in the preferred implementation mode, the present utility model forms a complete shielding door through the combination of the shielding door plate and the shielding guide plate, ensuring the full coverage of the detection inlet. When the detection inlet is closed, the shielding door plate and the shielding guide plate can gradually cover the detection inlet, improving the sealing performance of the shielding door, thereby ensuring that the shielding bin of the detection shielding cover mechanism is completely closed and preventing any leakage of electromagnetic signals.

[0027] Seventh, in a preferred implementation, the design of the shielding door protective cover and the buffer member inside it of the present utility model effectively reduces the hard collision of the shielding door panel when it is opened in place, further improves the smoothness and safety of the operation process, and reduces the impact and wear on the device. Description of the Drawings

[0028] Figure 1 is a three-dimensional structure diagram of the electromagnetic signal shielding device according to an embodiment of the present utility model;

[0029] Figure 2 is an outer three-dimensional structure diagram of the feed shielding door mechanism according to an embodiment of the present utility model;

[0030] Figure 3 is a three-dimensional structure diagram of the shielding guide plate and the first driving member according to an embodiment of the present utility model;

[0031] Figure 4 is a structure diagram of the shielding door panel in a closed state according to an embodiment of the present utility model;

[0032] Figure 5 is an inner three-dimensional structure diagram of the feed shielding door mechanism according to an embodiment of the present utility model;

[0033] Figure 6 is a structure diagram of the shielding door panel in an open state according to an embodiment of the present utility model;

[0034] Figure 7 is the assembly of the feed shielding door mechanism and the conveyor belt mechanism according to an embodiment of the present utility model Figure 1 ;

[0035] Figure 8 is the assembly of the feed shielding door mechanism and the conveyor belt mechanism according to an embodiment of the present utility model Figure 2 ;

[0036] Figure 9 is the assembly drawing of the electromagnetic signal shielding device and the conveyor belt mechanism according to an embodiment of the present utility model.

[0037] Among them, 1 - feed shielding door mechanism; 10 - shielding door assembly; 100 - shielding door panel; 101 - fixing plate; 102 - main body of the door frame plate; 103 - shielding guide plate; 104 - first driving member; 105 - bearing; 106 - shielding cover; 107 - fixed seat; 108 - second driving member; 109 - top block; 11 - shielding door protective cover; 2 - discharge shielding door mechanism; 3 - detection shielding cover mechanism; 4 - conveyor belt mechanism. Detailed Embodiments

[0038] In order to enable those skilled in the art to better understand the technical solutions of the present application, the following will further describe the present utility model in detail with reference to the drawings and embodiments.

[0039] The orientation terms such as "upper", "lower", "left", "right", "front", and "rear" in this application document are established based on the positional relationship shown in the drawings. If the drawings are different, the corresponding positional relationship may also change accordingly. Therefore, it should not be understood as a limitation to the protection scope.

[0040] In this application, terms such as "installation", "connection", "engagement", "coupling", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection or a connection that can communicate with each other, a direct connection, an indirect connection through an intermediate medium, a connection between the interiors of two components, or an interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Embodiment 1

[0042] As described in the Figure 1 specification appendix, the present utility model discloses an electromagnetic signal shielding device based on a conveyor belt, which includes a feeding shielding door mechanism 1, a discharging shielding door mechanism 2, and a detection shielding cover mechanism 3. The two sides of the detection shielding cover mechanism 3 are penetrated, and the other surfaces are closed. The feeding shielding door mechanism 1 and the detection shielding cover mechanism 3 are respectively arranged on both sides of the detection shielding cover mechanism 3 and enclose a shielding chamber with the detection shielding cover mechanism 3. The feeding shielding door mechanism 1 is provided with a detection inlet, and the discharging shielding door mechanism 2 is provided with a detection outlet. The feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 are each provided with a shielding door that matches the detection inlet and the detection outlet. The shielding door has two movement states of opening and closing, and is used to open and close the detection inlet and the detection outlet. Conveyor belts are respectively arranged outside the detection inlet, outside the detection outlet, and between the detection inlet and the detection outlet, and the conveyor belts are used to convey materials. A material (chip) detection device is arranged inside the detection shielding cover mechanism 3. The shielding door of the feeding shielding door mechanism 1 is opened for materials to enter the detection shielding cover mechanism 3 through the detection inlet. The shielding doors of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 are simultaneously closed for shielding external electromagnetic signals when the detection shielding cover mechanism 3 detects materials. The shielding door of the discharging shielding door mechanism 2 is opened for the detected materials to pass through the detection outlet.

[0043] Preferably, the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 have the same structure and are symmetrically arranged.

[0044] Preferably, to ensure the continuity of material detection, the shielding doors of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 are opened and closed simultaneously. When the shielding doors of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 are opened simultaneously, the conveyor belt inside the detection shielding cover mechanism 3 conveys the detected material and passes it through the detection outlet. At the same time, the conveyor belt outside the detection inlet conveys the material to be detected through the detection inlet to the conveyor belt inside the detection shielding cover mechanism 3. Subsequently, the shielding doors of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 are closed simultaneously, and the detection shielding cover mechanism 3 detects the material to be detected.

[0045] Preferably, the bottom edge height of the detection inlet and the detection outlet ≤ the top conveying surface height of the conveyor belt.

[0046] Preferably, the shielding door area of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 ≥ the opening area of the detection inlet and the detection outlet.

[0047] Preferably, the thicknesses of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 are less than any dimension of the material, ensuring that the conveyor belts outside the detection inlet and the detection outlet and the conveyor belt inside the detection shielding cover mechanism 3 are smoothly connected during the conveying process without causing conveying jams.

[0048] With the structure of this embodiment, the shielding doors of the feeding shielding door mechanism and the discharging shielding door mechanism can be opened and closed respectively when the material enters and exits the detection shielding cover mechanism. This design not only ensures the smooth passage of the material but also provides a reliable electromagnetic shielding environment during the material detection process. In addition, the shielding door structures of these two mechanisms are the same and symmetrically arranged, simplifying the design and manufacturing of the device. The feeding and discharging shielding doors can simultaneously perform the material inlet and outlet operations when the shielding doors are opened, which helps to maintain the continuity of material detection and improve the detection efficiency. The design of the shielding doors also takes into account the height connection with the conveyor belt, avoiding the jamming phenomenon of the material during the conveying process and further ensuring the stable operation of the device. Through these designs, the device can effectively ensure that the material is not interfered by external electromagnetic signals during the detection process, thereby improving the detection accuracy and ensuring the reliability and stability of the detection.

[0049] Embodiment 2

[0050] As shown in the specification appendix Figures 1 - 6 , this embodiment includes all the structures of Embodiment 1. The feeding shielding door mechanism 1 includes a shielding door assembly 10. The shielding door assembly 10 includes a shielding door panel 100, a fixing plate 101, a door frame plate body 102, a shielding guide plate 103, a first driving member 104, a bearing 105, a shielding cover 106, a fixing seat 107, a second driving member 108, and a top block 109.

[0051] The main body 102 of the door frame board is installed on one side of the detection shielding cover mechanism 3. The lower part of the middle is a closed surface, and a detection entrance is provided above the middle. The fixed plate 101, the shielding guide plate 103, and the first driving member 104 are all located at the front end of the closed surface. Among them, the first driving member 104 is arranged at the front end of the closed surface. The first driving member 104 uses an electric push rod, and the push rod end of the first driving member 104 is installed with the shielding guide plate 103. There are 4 fixed plates 101. Every 2 fixed plates 101 are arranged at intervals up and down, and every 2 fixed plates 101 are symmetrically arranged in a group on both lower sides of the detection entrance. The 2 fixed plates 101 on the same side are connected by a vertical plate with a chute. The vertical plate is installed on the main body 102 of the door frame board, and the fixed plate 101 is fixed on the external bracket to assist in supporting the feeding shielding door mechanism 1. The shielding guide plate 103 is located below the detection entrance, and its two sides are respectively arranged in the corresponding vertical plate chutes, and the shielding guide plate 103 is driven to move up and down along the vertical plate chute by the telescopic movement of the first driving member 104.

[0052] The shielding cover 106 is arranged on the inner top surface of the main body 102 of the door frame board with a detection entrance. The front end of the shielding cover 106 is surrounded by a housing. There are 2 bearings 105. The 2 bearings 105 are installed on both sides of the front end of the shielding cover 106 through bearing seats. The top of the shielding door panel 100 is rotatably connected to the 2 bearings 105 through a rotating shaft. The fixed seat 107 is arranged at the rear end of the shielding cover 106 and extends horizontally backward. The second driving member 108 is arranged at the bottom of the fixed seat 107. The second driving member 108 uses an electric push rod. The push rod end of the second driving member 108 is connected to the top block 109. The top block 109 is installed at the rear end of the shielding door panel 100. The shielding door panel 100 is driven to rotate along the bearing 105 by the telescopic movement of the second driving member 108. When the push rod of the second driving member 108 extends, the shielding door panel 100 rotates outward from the detection entrance and opens the detection entrance. When the push rod of the second driving member 108 contracts, the shielding door panel 100 closes the detection entrance.

[0053] Preferably, baffles extending inward are provided on both side edges of the main body 102 of the door frame board with a detection entrance. When the shielding door panel 100 is closed in place, the shielding door panel 100 abuts against the baffles to improve the shielding effect.

[0054] Preferably, a buffer pad is arranged on the contact surface between the baffle and the shielding door panel 100 to reduce the hard collision during closing.

[0055] Preferably, when the shielding door panel 100 is in a vertical posture, the shielding door panel 100 is located at the rear end of the shielding guide plate 103. When the detection entrance is closed, the shielding door panel 100 preferentially rotates and closes in place to cover a part of the detection entrance, and then the shielding guide plate 103 rises in place to cover the remaining part of the detection entrance and the bottom of the shielding door panel 100. The shielding door panel 100 and the shielding guide plate 103 form a complete shielding door. The complete shielding door cooperates with the vertical plates of the door frame plate body 102 and the fixing plate 101 to form a closed shielding chamber with the detection shielding cover mechanism 3, so as to achieve the effect of shielding external electromagnetic signals.

[0056] Preferably, the shielding door panel 100, the door frame plate body 102, the shielding guide plate 103, and the shielding cover 106 are made of materials that shield electromagnetic signal interference, such as 304 stainless steel.

[0057] The feed shielding door mechanism 1 further includes a shielding door protection cover 11. The shielding door protection cover 11 is arranged on the outer side of the top of the door frame plate body 102. A buffer member is arranged on the inner side of the shielding door protection cover 11 for the shielding door panel 100 to contact the buffer member of the shielding door protection cover 11 after being opened in place, so as to reduce the hard collision during opening.

[0058] Those skilled in the art should understand that the shielding method of the present invention is to open and close the detection entrance and the detection exit through the rotational opening and closing of the shielding door panel 100 and the telescopic movement of the shielding guide plate 103. In other shielding implementation methods, the shielding door panel 100 can also be cancelled, and the area of the shielding guide plate 103 is designed to be larger than the areas of the detection entrance and the detection exit. The detection entrance and the detection exit are opened and closed through the telescopic movement of the shielding guide plate 103. Controlling the shielding door to actively open and close, and not relying on the conveying power of the material to collide with the shielding door to open all belong to the protection scope of the present invention.

[0059] With the structure of this embodiment, through the abutting design of the baffle plates arranged on both sides of the door frame plate body and the shielding door panel, when the shielding door panel is closed in place, the shielding door panel and the baffle plates are closely matched, effectively improving the shielding effect on external electromagnetic signals and ensuring the stability of the electromagnetic environment during the detection process. A buffer pad is provided on the contact surface between the baffle plate and the shielding door panel, reducing the hard collision when the shielding door panel is closed. This not only reduces the wear of the device but also extends the service life of the equipment. At the same time, it reduces noise and improves the smoothness of operation. The combined design of the shielding door panel and the shielding guide plate ensures the full coverage of the detection entrance. When the detection entrance is closed, the shielding door panel and the shielding guide plate can gradually cover the detection entrance and form a complete shielding door. This design improves the sealing performance of the shielding door, thus ensuring that the shielding chamber of the detection shielding cover mechanism is completely closed and preventing any leakage of electromagnetic signals. Key components such as the shielding door panel, the fixing plate, and the door frame plate body are all made of 304 stainless steel, which not only improves the corrosion resistance and strength of the device but also ensures the durability and stability of the shielding efficiency. The design of the shielding door protective cover and the buffer member inside it effectively reduces the hard collision when the shielding door panel is opened in place, further improving the smoothness and safety of the operation process and reducing the impact and wear on the device. By using electric push rods as the first driving member and the second driving member, the opening and closing actions of the feeding shielding door mechanism can be automatically controlled, reducing the uncertainty brought by manual operation and improving the working efficiency and automation level of the overall device. The shielding door rotates outward to open, without occupying the space inside the shielding chamber, which can greatly reduce the size of the equipment, thus reducing the material cost of the shielding chamber and the floor area.

[0060] Embodiment 3

[0061] As shown in the attached Figures 7 - 9 specification, on the basis of Embodiment 2, the electromagnetic signal shielding device further includes a conveyor belt mechanism 4. The conveyor belt mechanism 4 adopts a three-section structure. The first section of the conveyor belt mechanism is adjacent to the outside of the detection entrance. The second section of the conveyor belt mechanism is arranged inside the detection shielding cover mechanism 3 and is adjacent to the inside of the detection entrance and the detection exit respectively. The third section of the conveyor belt mechanism is adjacent to the outside of the detection exit. The conveying directions of the first section of the conveyor belt mechanism, the second section of the conveyor belt mechanism, and the third section of the conveyor belt mechanism are the same, all moving from the detection entrance to the detection exit direction.

[0062] Preferably, the top conveying surface heights of the first section of the conveyor belt mechanism, the second section of the conveyor belt mechanism, and the third section of the conveyor belt mechanism are the same.

[0063] The detection shielding cover mechanism 3 is provided with an observation door and an electrical cabinet door, which are convenient for detection observation and maintenance.

[0064] Preferably, the housing of the detection shielding cover mechanism 3 is made of a material that shields electromagnetic signal interference, such as 304 stainless steel.

[0065] Example 4

[0066] Based on the above Examples 1 - 3, the electromagnetic signal shielding device of this embodiment further includes a photoelectric sensor and a controller. The photoelectric sensor is communicatively connected to the controller, and the controller is connected to the first driving member 104, the second driving member 108, and the motors of each section of the conveyor belt mechanism 4. There are 2 photoelectric sensors, and the 2 photoelectric sensors are respectively arranged on the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 and are located inside the detection shielding cover mechanism 3, and are used to judge the position of the material on each section of the conveyor belt mechanism 4 by detecting the change in the intensity of the reflected light.

[0067] The working principle of the electromagnetic signal shielding device based on the conveyor belt of the present utility model:

[0068] In the initial state, when the photoelectric sensors on both sides in the shielding bin detect that the material has not entered the set position of the second section of the conveyor belt mechanism, the controller controls the first driving member 104 and the second driving member 108. The push rod of the second driving member 108 extends to drive the shielding door plates 100 of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 to rotate outward and open. The push rod of the first driving member 104 moves downward to move the shielding guide plate 103 to the low point position, and the controller simultaneously controls the motors of each section of the conveyor belt mechanism 4 to rotate synchronously. The chip to be detected is conveyed by the first section of the conveyor belt mechanism to the second section of the conveyor belt mechanism inside the detection shielding cover mechanism 3. When the photoelectric sensors on both sides in the shielding bin detect that the material reaches the set position of the second section of the conveyor belt mechanism, the controller controls the motors of each section of the conveyor belt mechanism 4 to stop synchronously, and at the same time the controller controls the first driving member 104 and the second driving member 108 to close the shielding doors of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2. Then the detection equipment inside the detection shielding cover mechanism 3 detects the chip data. After the detection is completed, the shielding doors of the feeding shielding door mechanism 1 and the discharging shielding door mechanism 2 are simultaneously opened, the motors of each section of the conveyor belt mechanism 4 rotate synchronously, the second section of the conveyor belt mechanism conveys the chip to the third section of the conveyor belt mechanism, and the third section of the conveyor belt mechanism conveys the chip to the next process.

[0069] The present utility model can effectively ensure that the material enters the detection without damage, and is protected from external electromagnetic signals during the detection process, improve the detection accuracy, and ensure the reliability and stability of the detection.

[0070] The above are only the embodiments of the present utility model, and common knowledge such as the specific structures and characteristics known in the solutions is not described in detail herein. For those skilled in the art, it is obvious that this application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of this application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in this application. Any reference signs in the claims should not be construed as limiting the claimed rights involved.

Claims

1. An electromagnetic signal shielding device based on a conveyor belt, characterized in that, It includes a feeding shielding door mechanism (1), a discharging shielding door mechanism (2) and a detection shielding cover mechanism (3); both sides of the detection shielding cover mechanism (3) are through, and the rest of the surfaces are closed. The feeding shielding door mechanism (1) and the detection shielding cover mechanism (3) are respectively arranged on both sides of the detection shielding cover mechanism (3) and enclose a shielding chamber with the detection shielding cover mechanism (3). The feeding shielding door mechanism (1) is provided with a detection inlet, and the discharging shielding door mechanism (2) is provided with a detection outlet. The feeding shielding door mechanism (1) and the discharging shielding door mechanism (2) are each provided with a shielding door that matches the detection inlet and the detection outlet. The shielding door has two motion states of opening and closing, and is used to open and close the detection inlet and the detection outlet. Conveyor belts are respectively arranged outside the detection inlet, outside the detection outlet, and between the detection inlet and the detection outlet, and the conveyor belts are used to convey materials.

2. The electromagnetic signal shielding device based on a conveyor belt according to claim 1, wherein The feeding shielding door mechanism (1) includes a shielding door panel (100), a door frame body (102) and a shielding guide plate (103). The door frame body (102) is installed on one side of the detection shielding cover mechanism (3), the lower part in the middle is a closed surface, and a detection inlet is arranged above the middle part. The shielding door panel (100) is arranged above the detection inlet and is rotatably connected to the door frame body (102), and the shielding guide plate (103) is arranged below the detection inlet and is vertically slidably connected to the door frame body (102). The shielding door panel (100) and the shielding guide plate (103) form a complete shielding door.

3. The electromagnetic signal shielding device based on a conveyor belt according to claim 2, wherein The shielding door panel (100) opens and closes the upper part of the detection inlet by rotation. The shielding door panel (100) rotates outward to the detection inlet to open the upper part of the detection inlet. When the shielding guide plate (103) moves upward, it abuts against the bottom of the shielding door panel (100) to close the lower part of the detection inlet. When the shielding guide plate (103) moves downward, it moves away from the bottom of the shielding door panel (100) to open the lower part of the detection inlet.

4. The electromagnetic signal shielding device based on a conveyor belt according to claim 3, wherein A buffer pad is arranged on the contact surface between the shielding door panel (100) and the door frame body (102). The feeding shielding door mechanism (1) further includes a shielding door protective cover (11). The shielding door protective cover (11) is arranged outside the top of the door frame body (102), and the shielding door protective cover (11) is provided with a buffer member that contacts the shielding door panel (100) after it is opened in place.

5. The electromagnetic signal shielding device based on a conveyor belt according to claim 2, wherein The shielding door panel (100), the door frame body (102), the shielding guide plate (103) and the housing of the detection shielding cover mechanism (3) are made of materials resistant to shielding electromagnetic interference.

6. The electromagnetic signal shielding device based on a conveyor belt according to claim 2, characterized in that, The shielding door area of the feeding shielding door mechanism (1) ≥ the opening area of the detection inlet, and the shielding door area of the discharging shielding door mechanism (2) ≥ the opening area of the detection outlet.

7. The electromagnetic signal shielding device based on a conveyor belt according to claim 2, characterized in that The thicknesses of the feeding shielding door mechanism (1) and the discharging shielding door mechanism (2) are less than any dimension of the material.

8. The electromagnetic signal shielding device based on a conveyor belt according to claim 1, wherein, The shielding doors of the feeding shielding door mechanism (1) and the discharging shielding door mechanism (2) are opened and closed simultaneously.

9. The electromagnetic signal shielding device based on a conveyor belt according to claim 8, wherein, The bottom heights of the detection inlet and the detection outlet ≤ the height of the top conveying surface of the conveyor belt.

10. The electromagnetic signal shielding device based on a conveyor belt according to claim 1, characterized in that, The feeding shielding door mechanism (1) and the discharging shielding door mechanism (2) have the same structure and are symmetrically arranged.

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