A device for batch stamping of precious metal certificates after plastic sealing

Abstract

This application provides a device for batch stamping of precious metal certificates after lamination, belonging to the field of precious metal certificate production. The device includes two parallel conveyor belts (left and right); left and right supports located on the outer sides of the two conveyor belts in the width direction and with their top surfaces higher than the conveyor belts; a slide rail module spanning and connected to the top of the two supports; a positioning stamping device installed on the slide rail module; a tray placed on the conveyor belts; a positioning device located within the tray; a motor located between the two conveyor belts; a stop switch connected to the motor; a booster connected to the right side of the motor; and a lifting platform connected to the booster. This invention is easy to operate, ensuring both the clarity and proper positioning of the stamp, while also being fully automated and ensuring human safety, thus improving work quality and efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of precious metal certificate production, and specifically relates to a device for batch stamping steel seals on precious metal certificates after plastic sealing. Background Technology

[0002] Existing publicly available technologies include batch stamping of paper using paper feed rollers, but precious metal certificates are typically laminated. Laminated certificates are harder, thicker, and slippery, making them difficult to separate using paper feed rollers. Current precious metal stamping processes usually involve manual stamping of each certificate individually, which is time-consuming, and improper use of stamping equipment can easily injure operators. Sometimes, human error results in uneven stamping positions or unclear stamps.

[0003] In conclusion, there is an urgent need to find an effective and safe device for stamping laminated precious metal certificates with steel seals, which can ensure the clarity and position of the steel seal, and protect the personal safety of staff during the stamping process. Summary of the Invention

[0004] To overcome the above problems, this utility model provides a device for batch stamping steel seals on sealed precious metal certificates, comprising:

[0005] A tray used to hold certificates;

[0006] A first transmission device is used to move the tray along a first direction;

[0007] The stamping device, located above the transmission device, is used to affix a steel stamp to the certificate;

[0008] The limiting device is movable between a first position and a second position. In the first position, the limiting device is able to abut against the tray to restrict the movement of the tray. In the second position, the limiting device is separated from the tray assembly.

[0009] The above devices can ensure the precise position of the certificate relative to the stamping device to the greatest extent possible on the basis of automation, so as to achieve the technical effects of saving labor, ensuring personnel safety, and ensuring the quality of the stamping work.

[0010] Furthermore, the limiting device includes a blocking switch, which is disposed on the path of the tray moving in the first direction;

[0011] When the tray moves along the first direction and first comes into contact with the blocking switch, the blocking switch enters the first position and restricts the movement of the tray along the first direction;

[0012] After the stamping device completes the stamping process, the blocking switch moves to the second position and separates from the tray, and the tray continues to move in the first direction.

[0013] By setting up the blocking switch, the node relationship between the first position and the second position is clearly defined for the overall workflow, so that designers can adapt to different work processes through mechanical structure modification or encoder programming.

[0014] Furthermore, the tray is provided with a positioning groove, and the surface of the positioning groove is provided with a plurality of certificate fixing corners arranged along the second direction for fixing the certificate, the second direction being perpendicular to the first direction.

[0015] The positioning slots allow the pallet to carry multiple certificates for processing at once, and the certificate fixing angles further enhance the positional stability of the certificates, giving the entire structure a high degree of anti-interference capability and ensuring work quality.

[0016] Furthermore, a slide module is provided above the first transmission device along the second direction, and the stamping device is slidably connected to the slide module and can slide along the slide module.

[0017] The slide module allows the stamping device to move along a second direction within the positioning groove, thereby improving work efficiency.

[0018] Furthermore, the first transmission device is provided with supports on both sides, and a slide rail is provided at the top of the supports along the first direction. The two ends of the slide rail module are slidably connected to the slide rail and can slide parallel to each other along the first direction.

[0019] By setting up the bracket, the slide module is allowed to move parallel along the first direction, thereby expanding the range of motion of the stamping device to the entire positioning groove and improving work efficiency.

[0020] Furthermore, the stamping device includes a certificate stamp for stamping and a positioning camera for positioning the certificate in the positioning slot.

[0021] By setting up a positioning camera, the stamping device can identify the certificate in the positioning slot through image recognition, and then combine it with the position coordinates of the encoding disk to form a double verification, which can greatly ensure the quality of the stamping work.

[0022] Furthermore, the limiting device includes an L-shaped stop lever driven by a cylinder;

[0023] When in the first position, the L-shaped stop bar rises above the plane of the first transmission device and can abut against the tray to restrict its movement;

[0024] When in the second position, the L-shaped stop bar retracts below the plane of the first transmission device, and the tray continues to move along the first direction.

[0025] By changing the limit device to an L-shaped stop bar, the motor built into the device can be utilized to the maximum extent, thereby simplifying the structure of the device. At the same time, the height of the pneumatic stop bar is suitable for the high humidity environment of the sealing workshop, making it a relatively preferred option.

[0026] Furthermore, the limiting device includes an electromagnetic flip plate, which is perpendicular to the horizontal plane of the first transmission device when in the first position; and parallel to the horizontal plane of the first transmission device when in the second position.

[0027] Electromagnetic flip plates are often equipped with a mechanical self-locking structure and can automatically reset. They are more energy-efficient than pneumatic rod structures. In addition, because the stamping process is relatively long, air-cooling equipment is generally not required to cool them down, making them highly compatible with this equipment.

[0028] Furthermore, the limiting device includes an electromagnet lifting block. When in the first position, the electromagnet lifting block is energized, extends out of the horizontal plane of the first transmission device, and abuts against the tray. When in the second position, the electromagnet lifting block is de-energized, falls back below the horizontal plane of the first transmission device, and the tray continues to move in the first direction.

[0029] Electromagnetic lifting stops typically have a response speed of less than 0.1s, which is half that of pneumatic rod devices. When the conveyor belt speed is fast enough, they can lift to the maximum extent to block the movement. At the same time, compared with electromagnetic tilting plates, they have lower requirements for flatness and are smaller in size.

[0030] Furthermore, a second transmission device is provided at the end of the first transmission device for moving the tray in a second direction.

[0031] By setting up a second transmission device, the pallet can be folded or moved in the opposite direction, which can improve the space utilization of the workshop to a certain extent and provide convenience for assembly line design.

[0032] In summary, the beneficial effects of this application are as follows:

[0033] 1. Improve work efficiency: This device can automatically stamp steel seals in batches, thus improving work efficiency.

[0034] 2. Precise positioning: This device can use single positioning camera positioning, encoding disk coordinate positioning, or dual verification positioning to accurately locate the position of the stamp, ensuring the quality of certificate production.

[0035] 3. Reduced harm to operators: This device eliminates the need for manual stamping during operation, preventing injuries and ensuring the occupational health and safety of workers.

[0036] 4. Flexible use: This device can be flexibly changed to different sizes of positioning grooves according to the size of the certificate. At the same time, it can be used with a variety of limit devices, which can greatly improve the applicability of the device to different workshop environments and expand its application range.

[0037] In summary, this utility model is easy to operate, can ensure the clarity and proper position of the steel stamp, can be fully automated, and can guarantee the safety of personnel, thereby improving work quality and efficiency. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0039] Figure 1 This is a front structural diagram of the present invention;

[0040] Figure 2 This is a side view of the structure of this utility model;

[0041] Figure 3 This is a schematic diagram of the first position when the L-shaped stop bar is used as a limiting device in this utility model;

[0042] Figure 4 This is a schematic diagram of the second position when the L-shaped stop bar is used as a limiting device in this utility model;

[0043] Figure 5 This is a schematic diagram of the first position when the electromagnetic flip plate is used as a limiting device in this utility model;

[0044] Figure 6 This is a schematic diagram of the second position when the electromagnetic flip plate is used as a limiting device in this utility model;

[0045] Figure 7 This is a schematic diagram of the first position when the electromagnet lifting block is used as a limiting device in this utility model;

[0046] Figure 8 This is a schematic diagram of the second position when the electromagnet lifting stop is used as a limiting device in this utility model.

[0047] Explanation of reference numerals in the attached drawings: 1. Conveyor belt; 2. Support frame; 3. Slide module; 4. Certificate stamp; 5. Pallet; 6. Positioning slot; 7. Blocking switch; 8. Motor; 9. Booster; 10. Lifting platform; 11. Positioning camera; 12. L-shaped stop bar; 13. Electromagnetic flip plate; 14. Electromagnet; 15. Electromagnetic lifting block.

[0048] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Detailed Implementation

[0049] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0051] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0052] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0053] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0054] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0055] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0056] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0057] Reference Figure 1 and Figure 2 As shown, in some embodiments, a device for batch stamping of precious metal certificates after plastic sealing includes a first transmission device. The first transmission device includes any device that can displace the tray 5 along a first direction. Here, the first direction can be any direction on a plane. In this embodiment, the first transmission device consists of two conveyor belts 1 set up on the left and right with a space between them.

[0058] The conveyor belt 1 is placed with a polyethylene pallet 5. It should be noted that the material of the pallet 5 is not limited to polyethylene, but includes any material that is chemically stable, durable, corrosion-resistant and has a certain load-bearing capacity.

[0059] The dimensions of tray 5 can be modified according to specific needs. However, when the dimensions of tray 5 change, the specific process parameters given in this embodiment also need to be dynamically balanced through experiments. Therefore, all the process parameters mentioned below are actually given based on specific data and are not the only process parameters of this application. In this embodiment, the dimensions of tray 5 can be set to 40 cm in length and 40 cm in width. Tray 5 can move along the length of conveyor belt 1 under the action of conveyor belt 1, which is also the first direction.

[0060] A stamping device for stamping the certificate carried on the tray 5 is provided above the conveyor belt 1. A limit device is provided on the conveyor belt 1 in the movement path of the tray 5 along the first direction to define the working position of the tray 5 during the stamping operation, so as to facilitate the sampling of the position coordinates by the coding disk and ensure the working quality of the stamping operation.

[0061] The limiting device can limit the tray 5. It has a first position and a second position. In addition, it also has an initial position in a non-working state. It should be noted that the first position and the second position do not limit the physical space coordinate positioning of the limiting device, but rather its temporal position as a process node in the workflow.

[0062] The first position indicates that tray 5 has entered the working position, the stamping device is activated, and the stamping operation is performed.

[0063] The second position indicates that the stamping work is completed, and the limiting device contacts the restriction on the movement of pallet 5, allowing pallet 5 to continue moving in the first direction to ensure the continuous operation of production activities.

[0064] Reference Figure 1 and Figure 2 As shown, in some embodiments, the limiting device includes a blocking switch 7, which is a triangular stop electrically connected to a motor 8 disposed between the two conveyor belts 1. A pressure sensor is provided on the side of the triangular stop facing the tray 5. The selection of the pressure sensor must meet the following conditions: the weight of the cast steel part is approximately 2500g, and the estimated impact force is approximately 70N~80N, so the sensor range exceeds 80N; the humidity in the molding workshop is high, so the sensor protection level must be IP67 or higher; and it must be compatible with PLC control.

[0065] When the blocking switch 7 is in its initial position, the top surface of the blocking switch 7 extends 100 mm beyond the horizontal plane of the conveyor belt 1 and is positioned above the movement path of the tray 5 in the first direction.

[0066] When the tray 5 moves along the first direction to the position of the blocking switch 7, if the blocking switch 7 is in the initial position, the tray 5 comes into contact with it, triggering the pressure sensor on the blocking switch 7, at which point the blocking switch 7 enters the first position.

[0067] A booster 9 is also connected to the motor 8, and a lifting platform 10 is connected to the booster 9. When the blocking switch 7 moves from the initial position to the first position, the lifting platform 10 is directly below the tray 5, and the tray 5 is lifted by the booster 9 to facilitate the operation of the stamping device.

[0068] After the covering work is completed, the lifting platform 10 descends, causing the tray 5 to return to its original height. During this process, it comes into contact with the blocking switch 7 a second time, causing the blocking switch 7 to enter the second position. The motor 8 starts and drives the blocking switch 7 back to below the horizontal plane of the conveyor belt 1. The conveyor belt 1 restarts, causing the tray 5 to leave the working area, and the blocking switch 7 returns to its initial state.

[0069] Reference Figure 1 and Figure 2 In some other embodiments, the tray 5 is provided with a positioning groove 6, which is a cast steel part with a length of 36 cm and a width of 36 cm. The positioning groove 6 has multiple certificate fixing corners arranged in a matrix according to the certificate size. The certificate fixing corners are L-shaped, T-shaped or cross-shaped. Taking the L-shaped certificate fixing corner as an example, each group of certificate fixing corners can be set in pairs diagonally or in groups of four at the four corners.

[0070] The conveyor belt 1 is equipped with stamping transmission devices on both sides, which are used to drive the stamping device to move within the positioning groove 6 area to complete the stamping of multiple certificates.

[0071] Reference Figure 1 and Figure 2 In other embodiments, the stamping transmission device includes a slide module 3 disposed above the conveyor belt 1 along a second direction perpendicular to the first direction, and a bracket 2 disposed on both sides of the conveyor belt 1.

[0072] A slide rail is provided at the top of the bracket 2 along the first direction, and the two ends of the slide rail module 3 are slidably connected to the slide rail at the top of the bracket 2 so that the slide rail module 3 can be displaced along the first direction.

[0073] The stamping device is slidably connected to the slide module 3 and can slide along the length of the slide module 3, that is, it can slide along the second direction. Combined with the slide module 3 itself being able to slide along the first direction, the setting of this device allows the stamping device to move within the horizontal plane of the positioning groove 6.

[0074] Reference Figure 1 and Figure 2 In other embodiments, the stamping device includes a certificate stamp 4 and a positioning camera 11, which are integrated by a rigid bracket 2 and slidably connected to the sliding end of the sliding module.

[0075] When the tray 5 carrying the certificate moves to the first position state of triggering the limit device, the tray 5 is fixed in the working position. The positioning camera 11 takes a picture of the certificate in the positioning groove 6 on the tray 5 from a top angle and performs image positioning, forming a dual positioning with the coordinate information of the encoding disk, further enhancing the positioning capability of the device.

[0076] The PLC identifies deviation values ​​through edge detection, automatically adjusts the horizontal position of the certificate stamp 4, and the lifting platform 10 continues to rise so that the certificate stamp 4 contacts the certificate to complete the stamping, and repeats the above process repeatedly.

[0077] In addition, the stamping process can also be completed by adding a servo motor or hydraulic device to the certificate stamp 4.

[0078] Reference Figure 3 and Figure 4 In other embodiments, the limiting device employs a cylinder-driven L-shaped stop bar 12, mounted on a base between the two conveyor belts 1. The L-shaped stop bar 12 is made of 306 stainless steel and its surface is covered with a polyurethane buffer layer to reduce impact.

[0079] An infrared distance sensor or photoelectric sensor is installed on the side of the L-shaped stop lever 12, with a trigger condition of 100 mm.

[0080] In this embodiment, the initial position of the L-shaped stop bar 12 is that the vertical arm is 100 mm to 150 mm higher than the horizontal plane of the conveyor belt 1. The specific value is determined by the contact between the upper surface of the horizontal arm and the lower surface of the tray 5.

[0081] When the tray 5 moves along the first direction due to the action of the conveyor belt 1 and comes into contact with the L-shaped stop bar 12, the horizontal arm of the L-shaped stop bar 12 will hold the tray 5 to stabilize it and reduce the rebound caused by the reaction force. At the same time, the infrared sensor first obtains data that the distance of the tray 5 is ≤100 mm, the limiting device enters the first position, and drives the lifting platform 10 to complete the specific working process in Embodiment 1 until it is reset. The infrared sensor obtains data that the distance of the tray 5 is ≤100 mm for the second time, the limiting device enters the second position, the cylinder retracts, and the L-shaped stop bar 12 is completely lowered below the plane of the conveyor belt 1.

[0082] Compared to the stop block design, the cylinder is better suited to humid working environments. Furthermore, the triangular stop block and the tray 5 have an oblique contact surface, and the resulting component force may sometimes cause the tray 5 to bounce slightly, causing its position to deviate, which affects the accuracy of the stamping.

[0083] Reference Figure 5 and Figure 6 In other embodiments, the limiting device uses an electromagnetic flip plate 13. The electromagnetic flip plate 13 is made of stainless steel as the main body, with a rotating shaft running through the center and torsion springs at both ends. A permanent magnet is embedded in the bottom of the flip plate, and an electromagnetic coil or electromagnet 14 is installed in the corresponding position.

[0084] In the initial state, the electromagnet 14 is de-energized, the torsion spring keeps the tilting plate perpendicular to the plane of the conveyor belt 1, and the mechanical self-locking structure resists the impact force so that its maximum deflection angle is 90°.

[0085] A photoelectric sensor is installed at the position of the electromagnetic flip plate 13 to detect the distance between the tray 5 and the electromagnetic flip plate 13. When the tray 5 approaches within 100 mm, it enters the first position state and starts the stamping process. At this time, the lifting platform 10 is raised, the photoelectric sensor loses data, the electromagnetic flip plate 13 enters the second position state, the electromagnet 14 is energized, so that the electromagnetic flip plate 13 remains parallel to the plane of the conveyor belt 1, and the upper surface of the electromagnetic flip plate 13 is lower than the plane of the conveyor belt 1. It should be noted that in this embodiment, the first position state means that the conveyor belt 1 stops, and the second position state does not mean that the conveyor belt 1 starts moving again. Instead, it is based on the photoelectric sensor receiving a signal at a distance ≤100 mm for the second time. The purpose of this is to avoid the tray 5 getting stuck on the electromagnetic flip plate 13 and causing it to be unable to reset.

[0086] Reference Figure 7 and Figure 8 In other embodiments, the limiting device uses an electromagnet lifting block 15. The electromagnet lifting block 15 is made of a cylindrical pure iron core shaft with a 5 mm thick polyurethane buffer layer attached to the outside. A magnetic coil is wrapped around the bottom of the electromagnet lifting block 15 to drive the electromagnet lifting block 15 to rise.

[0087] In the initial position, the magnetic coil is de-energized, and the electromagnet lifting block 15 sinks into the base under its own weight, with the top of the electromagnet lifting block 15 lower than the horizontal plane of the conveyor belt 1.

[0088] A photoelectric sensor is installed at the electromagnet lifting stop 15 facing the tray 5. Because the triggering speed of the electromagnet lifting stop 15 is slightly slower than that of the previous embodiment, the photoelectric sensor condition data is set to 150 mm. When the tray 5 moves to a position 150 mm away from the electromagnet lifting stop 15, the electromagnetic coil is energized to raise the electromagnet lifting stop 15 and at the same time, the conveyor belt 1 stops. At this time, it enters the first position of the electromagnet lifting stop 15. The polyurethane layer on the side of the stop is impacted by the inertia of the tray 5 and its displacement is restricted. At the same time, the stamping operation starts.

[0089] After the stamping process is completed, the PLC cuts off the power to the magnetic coil, and the stop falls back due to its own weight (if it is difficult to fall back due to friction, consider increasing its weight). The conveyor belt 1 restarts, and the tray 5 leaves the working position.

[0090] In addition, in some other embodiments, a second transmission device is provided along the second direction at the point where the tray 5 stops working. In this case, the setting of the limiting device is changed as follows: in the first position, the first transmission device and the second transmission device stop moving; in the second position, the second transmission device moves first, causing the tray 5 to leave the working position, and then the first transmission device resumes movement.

[0091] In summary, taking the embodiment of the limiting device using the blocking switch 7 as an example, the specific workflow of the stamping process in this embodiment is as follows: the tray 5 moves along the direction of the conveyor belt 1 to contact the blocking switch 7, triggering the pressure sensor, causing the blocking switch 7 to enter the first position, the lifting platform 10 rises, lifting the tray 5 to the working height, the stamping device moves, positions and stamps all certificates, after the stamping is completed, the lifting platform 10 and the tray 5 return to the original height, thereby contacting the blocking switch 7 again, causing it to enter the second position and retreat to below the horizontal plane of the conveyor belt 1, so as to release the limiting of the tray 5, the conveyor belt 1 restarts, the tray 5 leaves the working area, and the blocking switch 7 returns to the initial state.

[0092] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A device for batch stamping steel seals on precious metal certificates after plastic sealing, characterized in that, include: Tray (5), used to carry the certificate; A first transmission device is used to move the tray (5) along a first direction; A stamping device, located above the first transmission device, is used to affix a steel stamp to the certificate; The limiting device is movable between a first position and a second position. In the first position, the limiting device is able to abut against the tray (5) to restrict the movement of the tray (5). In the second position, the limiting device is separated from the tray (5).

2. The device for batch stamping of precious metal certificates after plastic sealing according to claim 1, characterized in that, The limiting device includes a blocking switch (7), which is disposed on the path of the tray (5) moving along the first direction; When the tray (5) moves along the first direction and first comes into contact with the blocking switch (7), the blocking switch (7) enters the first position and restricts the movement of the tray (5) along the first direction; After the stamping device completes the stamping operation, the blocking switch (7) enters the second position and separates from the tray (5), and the tray (5) continues to move along the first direction.

3. The device for batch stamping of precious metal certificates after plastic sealing according to claim 2, characterized in that, The tray (5) is provided with a positioning groove (6), and the surface of the positioning groove (6) is provided with a plurality of certificate fixing angles for fixing the certificate along the second direction, the second direction being perpendicular to the first direction; The first transmission device is equipped with a stamping transmission device, which enables the stamping device to move on the same horizontal plane.

4. The device for batch stamping of precious metal certificates after plastic sealing according to claim 3, characterized in that, The stamping transmission device includes a slide module (3) arranged above the first transmission device along the second direction, and the stamping device is slidably connected to the slide module (3) and can slide along the slide module (3).

5. The device for batch stamping of precious metal certificates after plastic sealing according to claim 4, characterized in that, The first transmission device is provided with brackets (2) on both sides, and a slide is provided at the top of the bracket (2) along the first direction. The two ends of the slide module (3) are slidably connected to the slide and can slide parallel along the first direction.

6. The device for batch stamping of precious metal certificates after plastic sealing according to claim 4, characterized in that, The stamping device includes a certificate stamp (4) for stamping and a positioning camera (11) for positioning the certificate in the positioning slot (6).

7. The device for batch stamping of precious metal certificates after plastic sealing according to claim 1, characterized in that, The limiting device includes an L-shaped stop (12) driven by a cylinder. When in the first position, the L-shaped stop bar rises above the plane of the first transmission device and can abut against the tray (5) to restrict its movement; When in the second position, the L-shaped stop bar retracts below the plane of the first transmission device, and the tray (5) continues to move along the first direction.

8. The device for batch stamping of precious metal certificates after plastic sealing according to claim 1, characterized in that, The limiting device includes an electromagnetic flip plate (13). When in the first position, the electromagnetic flip plate (13) is perpendicular to the horizontal plane of the first transmission device; when in the second position, the electromagnetic flip plate (13) is parallel to the horizontal plane of the first transmission device.

9. The device for batch stamping of precious metal certificates after plastic sealing according to claim 1, characterized in that, The limiting device includes an electromagnet lifting block (15). When in the first position, the electromagnet lifting block (15) is energized, extends out of the horizontal plane of the first transmission device, and abuts against the tray (5). When in the second position, the electromagnet lifting block (15) is de-energized and falls back below the horizontal plane of the first transmission device, and the tray (5) continues to move along the first direction.

10. A device for batch stamping of steel seals on precious metal certificates after plastic sealing according to claim 1, characterized in that, The first transmission device is provided with a second transmission device at its end, which is used to move the tray (5) in a second direction.

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