A silver dot front and back material distinguishing mechanism and its use method

Abstract

The present invention discloses a silver dot positive and negative material distinguishing mechanism, comprising a mounting base, a sliding seat, a driven positioning assembly for positioning silver dots, and a driven blanking assembly for discharging unqualified silver dots; a loading trough is formed on the top of one side of the sliding seat, and a blanking channel used in conjunction with the blanking assembly is formed on the sliding seat; the positioning assembly comprises a sliding block slidably mounted in the sliding seat and a silver dot positioning piece mounted on the top of the sliding block, and a positioning groove is formed on the side of the silver dot positioning piece close to the loading trough; the blanking assembly comprises a blanking block and a longitudinal push cylinder, and a blanking hole is provided on the blanking block. The sliding block moves horizontally in the sliding seat, the silver dot positioning piece clamps the silver dots transmitted from the loading trough, and moves forward to the detection position of the silver dots under the drive of the sliding block, and drives the blanking block to move longitudinally in the sliding seat, so that the blanking hole is opposite to the positioning groove, so that unqualified silver dots are discharged through the blanking hole and the blanking channel, with high production efficiency, time and labor saving.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a silver dot front and back material distinguishing mechanism and a use method thereof. Background Art

[0002] The fully automatic silver dot welding equipment has requirements for the front and back sides when using the silver dot. In the process of welding the silver dot and the workpiece, the back side of the silver dot often appears. After welding, there are few silver dot residues and insufficient silver dot shear force, which leads to unqualified finished products and seriously affects the production quality of the finished products.

[0003] At present, the traditional method of removing the wrong silver dots is to manually remove the silver dots on the reverse side, which has low production efficiency, is time-consuming and labor-intensive, and has safety hazards during manual operation.

[0004] Therefore, in order to solve the above technical problems, it is necessary to design a mechanism that can be used on automatic equipment to automatically and quickly discharge erroneous silver dots. Summary of the invention

[0005] The purpose of the present invention is to provide a silver dot positive and negative material distinguishing mechanism which has a simple structure, is easy to operate, does not require manual discharge of erroneous silver dots, and has high production efficiency.

[0006] Another object of the present invention is to provide a method for using the silver dot front and back material distinguishing mechanism.

[0007] The technical solution of the present invention is as follows:

[0008] A silver dot positive and negative material distinguishing mechanism, comprising: a mounting base, a sliding seat mounted on the mounting base, a driven positioning component for positioning the silver dot, and a driven blanking component for discharging unqualified silver dots;

[0009] Slide grooves are formed on the inner walls of both sides of the sliding seat, a loading groove is formed on the top of one side of the sliding seat for loading silver dots from the outside, and a silver dot cover plate is fixedly installed on the top of the loading groove, and a blanking channel matched with the blanking assembly is formed on the sliding seat;

[0010] The positioning assembly includes a slider slidably mounted in the sliding seat and a silver point positioning piece mounted on the top of the slider, the end of the slider is connected to the output end of the horizontal push cylinder to drive the slider to move horizontally in the sliding seat, and a positioning groove is formed on the side of the silver point positioning piece close to the feeding trough to cooperate with the feeding trough to clamp the silver point. Under the drive of the horizontal push cylinder, the slider drives the silver point positioning piece to slide horizontally in the sliding seat and drives the silver point to move to the detection position through the positioning groove;

[0011] The blanking assembly includes a blanking stopper and a longitudinal push cylinder for driving the blanking stopper to move. The output end of the longitudinal push cylinder is connected to the rear end of the blanking stopper. A blanking hole is provided on the blanking stopper for connecting with a blanking channel to discharge unqualified silver dots. The longitudinal push cylinder pushes the blanking stopper to move longitudinally in the sliding seat, so that the blanking hole of the blanking stopper moves to just below the positioning groove of the silver dot positioning piece, so that the silver dots in the positioning groove are discharged outward from the blanking channel through the blanking hole.

[0012] In the above technical scheme, the sliding seat includes a bottom plate, a first support block and a second support block symmetrically installed on both sides of the bottom plate, the bottoms of the first support block and the second support block are both installed on the bottom plate, and a cavity for sliding the slider is formed between the first support block, the second support block and the bottom plate, a step surface is formed on the top of the first support block, the step surface includes a first plane, a connecting surface and a second plane, the connecting surface is vertically arranged between the first plane and the second plane, the first plane is located above one side of the second plane, the loading trough is arranged on the first plane, the bottom of the loading trough is connected to the second plane, the silver point positioning piece is slidably installed on the second plane, so that a plurality of silver points enter the positioning groove of the silver point positioning piece placed on the second plane through the loading trough sequence, a first square hole is opened at the front end of the first support block along the movement direction of the slider for the front end of the blanking stopper to pass through, and a notch is formed below the first square hole, the notch is connected to the bottom of the first square hole to form the blanking channel.

[0013] In the above technical solution, a second square hole is formed on the second support block for the rear end of the blanking stopper to pass through, and the positions of the first square hole and the second square hole correspond to each other so that the blanking stopper can pass through the first square hole and the second square hole respectively.

[0014] In the above technical solution, two mounting holes are provided on the first plane of the first support block, and the silver dot cover plate is fixed to the first support block by two locking screws passing through the corresponding mounting holes respectively.

[0015] In the above technical solution, sliding surfaces matching the sliding grooves are formed on both sides of the sliding block, and the sliding surfaces are serrated sliding surfaces to improve the stability of the sliding block when sliding.

[0016] In the above technical solution, a material receiving box is provided on one side of the mounting base, and the material receiving box is located below the material dropping channel to receive the discharged unqualified silver dots.

[0017] In the above technical solution, a long hole is provided in the middle of the silver dot cover plate for observing the position of the silver dots in the loading trough, and the shape of the long hole is a rounded rectangle.

[0018] In the above technical solution, the transverse thrust cylinder is installed on the sliding seat through the transverse thrust cylinder fixing frame, and the output shaft of the transverse thrust cylinder is fixed to the sliding block through the cylinder fixing nut, the locking nut and the cylinder connecting head.

[0019] In the above technical solution, the longitudinal thrust cylinder is installed on the sliding seat through the longitudinal thrust cylinder fixing frame, and the output shaft of the longitudinal thrust cylinder is fixed to the blanking stopper through the cylinder fixing nut, the locking nut and the cylinder connecting head.

[0020] In the above technical solution, the bottom of the mounting base is connected to external equipment.

[0021] A method for using a silver dot front and back material distinguishing mechanism, comprising the following steps:

[0022] (1) Place multiple silver dots in the loading trough, push them into the positioning groove of the silver dot positioning piece in sequence, clamp a silver dot through the positioning groove, and then start the horizontal push cylinder, which pushes the slider and the silver dot positioning piece to move horizontally in the sliding seat. The silver dot positioning piece moves to the detection position on the second plane with the silver dot clamped in the positioning groove;

[0023] (2) Detecting the front and back of the silver dot by an external detection sensor. When the detection sensor detects that the silver dot is in the positive direction, step (3) is executed; when the detection sensor detects that the silver dot is in the negative direction, step (4) is executed;

[0024] (3) The qualified silver dots are taken out by an external manipulator, and then the horizontal push cylinder drives the slider and the silver dot positioning plate to return to the initial position of step (1), waiting for the next silver dot to be sent into the positioning groove of the silver dot positioning plate;

[0025] (4) Start the longitudinal push cylinder to drive the blanking stopper to move, so that the blanking hole of the blanking stopper is located directly below the positioning groove of the silver dot positioning piece, and the unqualified silver dots in the positioning groove fall into the receiving box through the blanking hole and the blanking channel;

[0026] (5) The longitudinal push cylinder returns to its original position, and the transverse push cylinder drives the slider and the silver dot positioning plate to return to their initial positions, waiting for the next silver dot in the feeding trough to be fed into the silver dot positioning plate, and repeating the above steps to complete the work of distinguishing the positive and negative silver dot materials.

[0027] The advantages and positive effects of the present invention are:

[0028] 1. The slider moves horizontally in the sliding seat, the silver dot positioning piece clamps the silver dots transmitted from the feeding trough, and moves forward to the silver dot detection position under the drive of the slider. When the detection is unqualified, the blanking block is driven to move longitudinally in the sliding seat, so that the blanking hole of the blanking block is opposite to the positioning groove of the silver dot positioning piece, so that the unqualified silver dots can be discharged through the blanking hole and the blanking channel, and the wrong silver dots can be quickly discharged. Compared with the traditional manual discharge of silver dots, it has high production efficiency and saves time and effort.

[0029] 2. The mounting base is connected to the external automatic equipment and can cooperate well with the external automatic equipment. The automatic equipment quickly loads and detects the front and back sides of the silver dots, and then quickly discharges the silver dots through the mechanism of the present invention, with a high degree of automation and a high safety factor.

[0030] 3. The outer side of the slider forms a serrated sliding surface, which makes it have good stability when sliding and ensures the normal operation of the silver point positioning piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the silver dot front and back material distinguishing mechanism of the present invention;

[0032] Figure 2 It is a structural schematic diagram of the silver dot front and back material distinguishing mechanism of the present invention (from another angle);

[0033] Figure 3 It is a structural schematic diagram of the silver dot positioning sheet in the present invention;

[0034] Figure 4 It is a structural schematic diagram of the slider in the present invention;

[0035] Figure 5 It is a structural schematic diagram of the blanking stopper in the present invention;

[0036] Figure 6 It is a structural schematic diagram of the sliding seat in the present invention;

[0037] Figure 7 2 is a schematic diagram of the structure of the sliding seat in the present invention (from another angle);

[0038] Figure 8 2 is a schematic diagram of the structure of the sliding seat in the present invention (from another angle);

[0039] Fig. 9 This is an initial state diagram of the silver dot front and back material distinguishing mechanism of the present invention (silver dot loading state);

[0040] Fig.10 This is a diagram of the use state of the silver dot positive and negative material distinguishing mechanism of the present invention (operating state of the horizontal push cylinder);

[0041] Fig.11It is a usage state diagram of the silver dot positive and negative material distinguishing mechanism of the present invention (operating state of the longitudinal push cylinder).

[0042] In the figure:

[0043] 1. Locking screw 2. Silver dot 3. Silver dot cover

[0044] 4. Silver dot positioning piece 5. Slider 6. Cylinder connector

[0045] 7. Locking nut 8. Cylinder fixing nut 9. Horizontal push cylinder

[0046] 10. Horizontal push cylinder fixing bracket 11. Dropping stopper 12. Vertical push cylinder fixing bracket

[0047] 13. Vertical push cylinder 14. Material receiving box 15. Mounting base

[0048] 16. Sliding seat 17. Positioning slot 18. Mounting hole

[0049] 19, blanking hole 20, first plane 21, second plane

[0050] 22, sliding surface 23, bottom plate 24, first support block

[0051] 25. Second support block 26. Second square hole 27. Feeding trough

[0052] 28. Blanking channel 29. First square hole DETAILED DESCRIPTION

[0053] The present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention, and in no way limit the protection scope of the present invention.

[0054] Example 1

[0055] As shown in the figure, a silver dot positive and negative material distinguishing mechanism of the present invention comprises: a mounting base 15, a sliding seat 16 mounted on the mounting base 15, a driven positioning component for positioning the silver dot, and a driven blanking component for discharging unqualified silver dots;

[0056] Slide grooves are formed on the inner walls of both sides of the sliding seat 16, and a loading groove 27 is formed on the top of one side of the sliding seat 16 for loading silver dots from the outside, and a silver dot cover plate 3 is fixed on the top of the loading groove 27. The sliding seat 16 is provided with a blanking channel 28 that cooperates with the blanking assembly;

[0057] The positioning assembly includes a slider 5 slidably mounted in a sliding seat 16 and a silver dot positioning piece 4 mounted on the top of the slider 5. The end of the slider 5 is connected to the output end of the horizontal push cylinder 9 to drive the slider 5 to move horizontally in the sliding seat 16 (move along the X-axis direction of the sliding seat). A positioning groove 17 is formed on the side of the silver dot positioning piece 4 close to the feeding groove 27, which is used to cooperate with the feeding groove 27 to clamp the silver dot. Under the drive of the horizontal push cylinder 9, the slider 5 drives the silver dot positioning piece 4 to slide horizontally in the sliding seat 16 and drives the silver dot to move to the detection position (a detection sensor is provided at the detection position, not shown in the figure);

[0058] The blanking assembly includes a blanking stopper 11 and a longitudinal push cylinder 13 for driving the blanking stopper 11 to move. The output end of the longitudinal push cylinder 13 is connected to the rear end of the blanking stopper 11. A blanking hole 19 is provided on the blanking stopper 11 for connecting with the blanking channel 28 to discharge unqualified silver dots. The longitudinal push cylinder 13 pushes the blanking stopper 11 to move longitudinally in the sliding seat 16 (moving along the Y-axis direction of the sliding seat) so that the blanking hole 19 of the blanking stopper 11 moves to directly below the positioning groove 17 of the silver dot positioning piece 4, so that the silver dots in the positioning groove 17 are discharged outward from the blanking channel 28 through the blanking hole 19.

[0059] Wherein, the moving direction of the sliding block is perpendicular to the moving direction of the blanking stopper.

[0060] Further, the sliding seat 16 includes a bottom plate 23, a first support block 24 and a second support block 25 symmetrically mounted on both sides of the bottom plate 23, the bottoms of the first support block 24 and the second support block 25 are both mounted on the bottom plate 23, and a cavity for the sliding block 5 to slide is formed between the first support block 24, the second support block 25 and the bottom plate 23, a stepped surface is formed on the top of the first support block 24, and the stepped surface includes a first plane 20, a connecting surface and a second plane 21, the connecting surface is vertically arranged between the first plane 20 and the second plane 21, and the first plane 20 is located at the second plane 21. Above one side of the plane 21, the feeding trough 27 is arranged on the first plane 20, and the feeding trough 27 is connected with the second plane 21. The silver dot positioning piece 4 is slidably installed on the second plane 21, so that a plurality of silver dots enter into the positioning groove 17 of the silver dot positioning piece 4 placed on the second plane 21 through the feeding trough 27 sequence. The first supporting block 24 is provided with a first square hole 29 at the front end along the movement direction of the slider 5 for the front end of the blanking stopper 11 to pass through, and a notch is formed below the first square hole 29, and the notch is connected with the bottom of the first square hole 29 to form the blanking channel 28.

[0061] Furthermore, the second support block 25 is provided with a second square hole 26 for the rear end of the blanking stopper 11 to pass through, and the first square hole 29 and the second square hole 26 are located correspondingly so that the blanking block passes through the first square hole 29 and the second square hole 26 respectively.

[0062] Furthermore, two mounting holes are provided on the first plane of the first support block, and the silver dot cover plate 3 is fixed to the first support block 24 by means of locking screws 1 passing through the corresponding mounting holes 18 .

[0063] Furthermore, sliding surfaces 22 matching the sliding grooves are formed on both sides of the slider 5 , and the sliding surfaces 22 are serrated sliding surfaces 22 to improve the stability of the slider 5 when sliding.

[0064] Furthermore, a receiving box 14 is provided on one side of the mounting base 15 , and the receiving box 14 is located below the material dropping channel 28 to receive the discharged unqualified silver dots.

[0065] Example 2

[0066] On the basis of Example 1, a long hole is provided in the middle of the silver dot cover plate 3 for observing the position of the silver dots in the loading trough 27, and the shape of the long hole is a rounded rectangle.

[0067] Specifically, the transverse thrust cylinder 9 is mounted on the sliding seat 16 via the transverse thrust cylinder fixing frame 10 , and the output shaft of the transverse thrust cylinder 9 is fixed to the sliding block 5 via the cylinder fixing nut 8 , the locking nut 7 and the cylinder connecting head 6 .

[0068] Specifically, the longitudinal thrust cylinder 13 is mounted on the sliding seat 16 via the longitudinal thrust cylinder fixing frame 12 , and the output shaft of the longitudinal thrust cylinder 13 is fixedly mounted to the blanking stopper 11 via the cylinder fixing nut 8 , the locking nut 7 and the cylinder connecting head 6 .

[0069] Furthermore, the bottom of the mounting base 15 is connected to an external device.

[0070] Example 3

[0071] Based on Example 1, the method of using the silver dot front and back material distinguishing mechanism of the present invention is as follows:

[0072] (1) Place multiple silver dots in the loading trough 27 and push them into the positioning groove of the silver dot positioning sheet 4 in sequence. Fig. 9 As shown), then the horizontal push cylinder 9 is started, and the horizontal push cylinder 9 pushes the slider 5 and the silver point positioning piece 4 to move horizontally in the sliding seat 16, and the silver point positioning piece moves to the detection position (as shown) on the second plane with the silver point mounted in the positioning groove. Fig.10 shown);

[0073] (2) Detecting the front and back of the silver dot by an external detection sensor. When the detection sensor detects that the silver dot is in the positive direction, step (3) is executed; when the detection sensor detects that the silver dot is in the negative direction, step (4) is executed;

[0074] (3) The qualified silver dots are taken out by an external manipulator, and then the horizontal push cylinder 9 drives the slider 5 and the silver dot positioning piece to return to the initial position of step (1), waiting for the next silver dot to be sent into the positioning groove of the silver dot positioning piece 4;

[0075] (4) Start the longitudinal push cylinder 13 to drive the blanking block 11 to move, so that the blanking hole 19 of the blanking block 11 is located directly below the positioning groove 17 of the silver dot positioning plate 4, and the unqualified silver dots in the positioning groove 17 fall into the receiving box 14 through the blanking hole 19 and the blanking channel (such as Fig.11 shown);

[0076] (5) The longitudinal push cylinder 13 returns to its original position, and the transverse push cylinder 9 drives the slider 5 and the silver dot positioning plate 4 to return to their initial positions, waiting for the next silver dot in the feeding trough 27 to be fed into the silver dot positioning plate 4, and repeating the above steps to complete the work of distinguishing the positive and negative silver dot materials.

[0077] The slider and the blanking stopper are perpendicular to each other. The slider and the silver dot positioning piece load and transfer the silver dots to the detection position for detection of the front and back of the silver dots. The silver dots on the reverse side move through the blanking holes of the blanking stopper to the position connected to the blanking channel, and unqualified silver dots are quickly discharged. Compared with the traditional manual method of discharging silver dots, it has high production efficiency, saves time and labor, and can be used in conjunction with automatic equipment, with a high degree of automation.

[0078] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0079] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0080] The present invention is described above by way of example. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be made by those skilled in the art without inventive effort falls within the protection scope of the present invention.

Claims

1. A method for using a silver dot front and back material distinguishing mechanism, wherein the silver dot front and back material distinguishing mechanism is characterized by: It includes a mounting base, a sliding seat mounted on the mounting base, a driven positioning component for positioning silver dots, and a driven blanking component for discharging unqualified silver dots; Slide grooves are formed on the inner walls of both sides of the sliding seat, a loading groove is formed on the top of one side of the sliding seat for loading silver dots from the outside, and a silver dot cover plate is fixedly installed on the top of the loading groove, and a blanking channel matched with the blanking assembly is formed on the sliding seat; The positioning assembly includes a slider slidably mounted in the sliding seat and a silver point positioning piece mounted on the top of the slider, the end of the slider is connected to the output end of the horizontal push cylinder to drive the slider to move horizontally in the sliding seat, and a positioning groove is formed on the side of the silver point positioning piece close to the feeding trough to cooperate with the feeding trough to clamp the silver point. Under the drive of the horizontal push cylinder, the slider drives the silver point positioning piece to slide horizontally in the sliding seat and drives the silver point to move to the detection position through the positioning groove; The blanking assembly includes a blanking stopper and a longitudinal push cylinder for driving the blanking stopper to move, the output end of the longitudinal push cylinder is connected to the rear end of the blanking stopper, the blanking stopper is provided with a blanking hole for communicating with the blanking channel to discharge unqualified silver dots, the longitudinal push cylinder pushes the blanking stopper to move longitudinally in the sliding seat, so that the blanking hole of the blanking stopper moves to just below the positioning groove of the silver dot positioning sheet, so that the silver dots in the positioning groove are discharged outward from the blanking channel through the blanking hole; The method of use comprises the following steps: (1) Place multiple silver dots in the loading trough, push them into the positioning groove of the silver dot positioning piece in sequence, clamp a silver dot through the positioning groove, and then start the horizontal push cylinder, which pushes the slider and the silver dot positioning piece to move horizontally in the sliding seat. The silver dot positioning piece moves to the detection position on the second plane with the silver dot clamped in the positioning groove; (2) Detecting the front and back of the silver dot by an external detection sensor. When the detection sensor detects that the silver dot is in the positive direction, step (3) is executed; when the detection sensor detects that the silver dot is in the negative direction, step (4) is executed; (3) The qualified silver dots are taken out by an external manipulator, and then the horizontal push cylinder drives the slider and the silver dot positioning plate to return to the initial position of step (1), waiting for the next silver dot to be sent into the positioning groove of the silver dot positioning plate; (4) Start the longitudinal push cylinder to drive the blanking stopper to move, so that the blanking hole of the blanking stopper is located directly below the positioning groove of the silver dot positioning piece, and the unqualified silver dots in the positioning groove fall into the receiving box through the blanking hole and the blanking channel; (5) The longitudinal push cylinder returns to its original position, and the transverse push cylinder drives the slider and the silver dot positioning plate to return to their initial positions, waiting for the next silver dot in the feeding trough to be fed into the silver dot positioning plate, and repeating the above steps to complete the work of distinguishing the positive and negative silver dot materials.

2. The method for using the silver dot front and back material distinguishing mechanism according to claim 1, characterized in that: The sliding seat includes a bottom plate, a first support block and a second support block symmetrically installed on both sides of the bottom plate, the bottoms of the first support block and the second support block are both installed on the bottom plate, and a cavity for sliding the slider is formed between the first support block, the second support block and the bottom plate, a step surface is formed on the top of the first support block, the step surface includes a first plane, a connecting surface and a second plane, the connecting surface is vertically arranged between the first plane and the second plane, the first plane is located above the second plane, the loading trough is arranged on the first plane, the bottom of the loading trough is connected with the second plane, the silver point positioning piece is slidably installed on the second plane, so that a plurality of silver points enter the positioning groove of the silver point positioning piece placed on the second plane through the loading trough sequence, a first square hole is opened at the front end of the first support block along the movement direction of the slider for the front end of the blanking block to pass through, and a notch is formed below the first square hole, the notch is connected with the bottom of the first square hole to form the blanking channel.

3. The method for using the silver dot front and back material distinguishing mechanism according to claim 2, characterized in that: The second supporting block is provided with a second square hole for the rear end of the blanking stopper to pass through, and the positions of the first square hole and the second square hole correspond to each other so that the blanking stopper can pass through the first square hole and the second square hole respectively.

4. The method for using the silver dot front and back material distinguishing mechanism according to claim 3, characterized in that: Two mounting holes are provided on the first plane of the first support block, and the silver dot cover plate is fixed to the first support block by respectively passing through the corresponding mounting holes via locking screws.

5. The method for using the silver dot front and back material distinguishing mechanism according to claim 4, characterized in that: Sliding surfaces matching the sliding grooves are formed on both sides of the sliding block, and the sliding surfaces are sawtooth sliding surfaces to improve the stability of the sliding block when sliding.

6. The method for using the silver dot front and back material distinguishing mechanism according to claim 5, characterized in that: A material receiving box is provided on one side of the mounting base, and the material receiving box is located below the material dropping channel to receive the discharged unqualified silver dots.

7. The method for using the silver dot front and back material distinguishing mechanism according to claim 6, characterized in that: A long hole is provided in the middle of the silver dot cover plate for observing the position of the silver dots in the loading trough, and the shape of the long hole is a rounded rectangle.

8. The method for using the silver dot front and back material distinguishing mechanism according to claim 7, characterized in that: The transverse thrust cylinder is installed on the sliding seat through a transverse thrust cylinder fixing frame, and the output shaft of the transverse thrust cylinder is fixedly mounted with the sliding block through a cylinder fixing nut, a locking nut and a cylinder connecting head.

9. The method for using the silver dot front and back material distinguishing mechanism according to claim 8, characterized in that: The longitudinal push cylinder is installed on the sliding seat through a longitudinal push cylinder fixing frame, and the output shaft of the longitudinal push cylinder is fixedly installed with a blanking stopper through a cylinder nut, a locking nut and a cylinder connecting head.

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