Carbon paste printing system for automotive rearview mirror heating elements

Abstract

The application discloses a kind of carbon paste printing systems for automobile rearview mirror heating element, it is related to carbon paste printing device technical field.The fixed frame is provided with first connecting plate by lifting module, the first connecting plate is installed with printing screen by fixed module, the first connecting plate is installed with second connecting plate by drive module, the second connecting plate is fixedly connected with first connecting block, the first connecting block is fixedly connected with connecting rod by moving module, the connecting rod is fixedly connected with ink pad, the connecting rod is provided with connecting mechanism, the connecting rod is provided with guide plate by the connecting mechanism, the ink pad is fixedly connected with arc plate.The cooperation of guide plate and adjacent arc plate is carried out by symmetrical distribution, the excess carbon paste on printing screen is re-paved during the movement of ink pad, and the excess carbon paste on both sides of printing screen is also collected, to avoid waste of carbon paste accumulated on both sides of printing screen.

Description

Technical Field

[0001] This invention relates to the field of carbon paste printing apparatus technology, and more particularly to a carbon paste printing system for automotive rearview mirror heating elements. Background Technology

[0002] The heating element for automotive rearview mirrors uses a composite material made of PET film and aluminum foil as the substrate. After etching a specified pattern onto the aluminum foil, a screen printing device is used to print carbon paste onto the substrate. The screen printing device uses a screen printing plate as a template. The pressure of a squeegee forces ink through the mesh openings and transfers it onto the substrate, thus replicating graphics and text. During operation, the operator first applies an appropriate amount of ink to the graphic area of ​​the screen printing plate. Then, pressure is applied to the ink by moving the squeegee, forcing it through the openings on the screen to the substrate surface. To ensure the integrity of the printed pattern, the amount of ink applied to the screen printing plate needs to be more than the amount required for printing. However, as the squeegee pushes the ink, some ink spills out from both sides of the squeegee's width and accumulates on the printing screen, becoming unusable and wasting ink. Summary of the Invention

[0003] In order to overcome the shortcomings of existing screen printing machines during use, the present invention provides a carbon paste printing system for automotive rearview mirror heating elements.

[0004] The technical solution is: a carbon paste printing system for automotive rearview mirror heating elements, comprising a fixing frame, a lifting module on one side of the fixing frame, a first connecting plate on the fixing frame via the lifting module, a positioning module on the fixing frame, a fixing module on one side of the first connecting plate, a printing screen mounted on the first connecting plate via the fixing module, a driving module on one side of the first connecting plate, a second connecting plate mounted on the first connecting plate via the driving module, and a first connecting block and a second connecting block fixedly connected to the second connecting plate. Both the first connecting block and the second connecting block are provided with... The device includes a movable module. A doctor blade is mounted on the second connecting block via the movable module. A connecting rod is fixed to the first connecting block via the movable module. A doctor blade is fixed to the side of the connecting rod away from the first connecting block. A connecting mechanism is provided on the side of the connecting rod away from the first connecting block. Symmetrically distributed guide plates are provided on the connecting rod via the connecting mechanism. Both the guide plates and the doctor blade are in contact with the printing screen. The guide plates are in contact with the doctor blade. Symmetrically distributed arc-shaped plates are fixed to the doctor blade. The arc-shaped plates slide with adjacent guide plates.

[0005] Further, the connecting mechanism comprises symmetrically distributed guide rods, the symmetrically distributed guide rods are respectively slidably connected to the sides of the adjacent guide plates away from the printing screen, and springs are fixed between the guide rods and the adjacent guide plates, the connecting rods are provided with symmetrically distributed arc-shaped grooves, the guide rods slide in the adjacent arc-shaped grooves, and arc-shaped springs are arranged in the arc-shaped grooves and fixed to the adjacent guide rods, the printing screen is detachably connected with an ink blocking plate, symmetrically distributed extrusion plates are fixed to the side of the ink blocking plate close to the ink scraping plate, the extrusion plates are extrudedly matched with the adjacent guide plates, and an extrusion assembly is arranged on the ink blocking plate and used for positioning the upper liquid level of the carbon paste.

[0006] Further, the arc-shaped plate is made of an elastically deformable material and used for shielding the connection between the ink scraping plate and the guide plate, and the center of the circle where the arc-shaped groove is located is located on a straight line where the adjacent guide plate and the ink scraping plate are in contact.

[0007] Further, the extrusion assembly comprises a first electric rotating shaft, the first electric rotating shaft is rotationally connected to the side of the ink blocking plate away from the ink scraping plate, a limiting plate is slidably connected to the side of the ink blocking plate away from the printing screen, the symmetrically distributed guide plates are all limitedly matched with the limiting plate, a connecting frame is fixed to the side of the limiting plate away from the printing screen and in contact with the ink blocking plate, the first electric rotating shaft is provided with threads, the first electric rotating shaft is threadedly connected with a driving block through the threads thereon, the connecting frame is provided with an inclined groove, the driving block slides in the inclined groove of the connecting frame, and a straight-line array of detection components is arranged on the side of the limiting plate close to the printing screen and used for detecting the fluidity of the carbon paste.

[0008] Further, the detection components comprise a connecting shell, the connecting shell is fixed to the side of the limiting plate close to the printing screen, a positioning block is fixed to the side of the connecting shell close to the printing screen, a first pressure detector is arranged on the side of the positioning block away from the printing screen, and a first elastic member is arranged between the first pressure detector and the limiting plate.

[0009] Further, the connecting shell is made of an elastically deformable material and used for maintaining the sealing between the connecting shell and the adjacent positioning block.

[0010] Further, the fixed block is in extrusion fit with the printing screen, and the fixed block is provided with a plurality of air exhaust holes.

[0011] Further, the fixed block is in extrusion fit with the printing screen, and the fixed block is provided with a plurality of air exhaust holes.

[0012] Further, the moving frame is rotationally connected with a fifth electric rotating shaft, the fifth electric rotating shaft is provided with external threads, the fifth electric rotating shaft is in threaded connection with a first moving plate through the external threads thereon, the first moving plate is in sliding connection with the guide frame, the first moving plate is fixedly connected with symmetrically distributed second pressure detectors on a side away from the storage plate, the symmetrically distributed second pressure detectors are fixedly connected with second elastic members, one end of the second elastic member away from the adjacent second pressure detector is fixedly connected with a wedge-shaped block, the wedge-shaped block is fixedly connected with a connecting rod penetrating through the storage plate and in sliding connection therewith, and the meandering plate is provided with a through groove in sliding fit with the wedge-shaped block.

[0013] Further, the second moving plate is fixed to one side of the extrusion shell away from the extrusion shell, the second moving plate is provided with an L-shaped slot, the L-shaped slot of the second moving plate is slidably connected with a guide block, the guide block is slidably connected with an L-shaped plate, a tension spring is fixed between the opposite sides of the guide block and the L-shaped plate, the second moving plate is fixed with a self-locking motor through a motor base, the self-locking motor is provided with a sliding groove slidably matched with the self-locking motor, the output shaft of the self-locking motor is fixed with a fixed rod, the fixed rod is slidably matched with the guide block, the fixed block is slidably connected with a moving ring, the moving ring is provided with a rectangular hole, the exhaust holes arranged on the fixed block are in communication with the rectangular hole on the moving ring, the L-shaped plate is fixed with a U-shaped plate on the side close to the storage plate, the moving ring is fixed with a connecting column on the side close to the second moving plate, and the U-shaped plate on the guide block is extruded with the connecting column on the moving ring.

[0014] The beneficial effects of the present application are that the guide plates symmetrically distributed are matched with the adjacent arc-shaped plates respectively, the excess carbon paste on the printing screen is re-spread in the process of moving the squeegee, and the excess carbon paste on both sides of the printing screen is collected, so that the waste of the carbon paste accumulated on both sides of the printing screen is avoided.

[0015] Through the cooperation of the squeegee, the symmetrically distributed guide plates and the ink blocking plate, the carbon paste located between the four is extruded to the middle of the four, and the uniformity of the distribution of the carbon paste in the cavity is further improved.

[0016] The carbon paste is extruded by the limiting plate and the positioning blocks in the linear array on the limiting plate, so that the upper side of the carbon paste tends to be horizontal, the uniformity of the distribution of the carbon paste in the cavity is improved, and the flowability of the carbon paste is detected by the pressure detector on the positioning block, and the device is urgently stopped by the control terminal when the flowability of the carbon paste is poor.

[0017] The material is positioned on one side, and the whole material is positioned, and air is sent into the exhaust holes arranged in matrix on the fixed block, so that the material is affected by the flow of the gas and floats upward, the material is stretched by the flow of the gas, the folding of the material caused by the mistake of the staff during placement is avoided, and the influence on the subsequent printing process is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0019] Figure 2 It is a three-dimensional structure schematic diagram of the connecting rod and the guide plate of the present application;

[0020] Figure 3 It is a three-dimensional structure schematic diagram of the ink blocking plate and the extrusion plate of the present application;

[0021] Figure 4 The schematic diagram of the three-dimensional structure of the guide plate and the arc-shaped plate of the present application;

[0022] Figure 5 The schematic diagram of the three-dimensional structure of the guide rod and the arc-shaped slot of the present application;

[0023] Figure 6 The schematic diagram of the three-dimensional structure of the extrusion assembly of the present application;

[0024] Figure 7 The schematic diagram of the three-dimensional structure of the detection component of the present application;

[0025] Figure 8 The schematic diagram of the three-dimensional structure of the second electric rotating shaft and the fixed block of the present application;

[0026] Figure 9 The schematic diagram of the three-dimensional structure of the fixed block and the meander-shaped plate of the present application;

[0027] Figure 10 The schematic diagram of the three-dimensional structure of the second elastic member and the wedge-shaped block of the present application;

[0028] Figure 11 The schematic diagram of the three-dimensional structure of the guide block and the L-shaped plate of the present application;

[0029] Figure 12 The schematic diagram of the three-dimensional structure of the fixed block and the moving ring of the present application;

[0030] Figure 13 The system flow chart of the present application.

[0031] Fig. 1 is a fixed frame, Fig. 2 is a first connecting plate, Fig. 3 is a printing screen, Fig. 4 is a second connecting plate, Fig. 5 is a first connecting block, Fig. 6 is a second connecting block, Fig. 7 is a connecting rod, Fig. 8 is an ink scraping plate, Fig. 9 is a guide plate, Fig. 10 is an arc-shaped plate, Fig. 11 is a guide rod, Fig. 12 is an arc-shaped slot, Fig. 14 is an ink blocking plate, Fig. 15 is an extrusion plate, Fig. 21 is a first electric rotating shaft, Fig. 22 is a limiting plate, Fig. 23 is a connecting frame, Fig. 24 is a driving block, Fig. 31 is a connecting shell, Fig. 32 is a positioning block, Fig. 33 is a first elastic member, Fig. 41 is a storage plate, Fig. 42 is a second electric rotating shaft, Fig. 43 is a fixed block, Fig. 44 is a meander-shaped plate, Fig. 45 is a third electric rotating shaft, Fig. 46 is a moving frame, Fig. 47 is a fourth electric rotating shaft, Fig. 48 is an extrusion shell, Fig. 49 is a guide frame, Fig. 50 is a positioning plate, Fig. 51 is a fifth electric rotating shaft, Fig. 52 is a first moving plate, Fig. 53 is a second elastic member, Fig. 54 is a wedge-shaped block, Fig. 61 is a second moving plate, Fig. 62 is a guide block, Fig. 63 is an L-shaped plate, Fig. 64 is a self-locking motor, Fig. 65 is a fixed rod, and Fig. 66 is a moving ring. DETAILED DESCRIPTION

[0032] The present application will be further described below in conjunction with the drawings and examples.

[0033] Embodiment 1: In the process of using the existing screen printing machine, part of the ink will move out from both sides of the squeegee width and form accumulation on the printing screen, which cannot be utilized, causing ink waste, the present application provides:

[0034] A carbon paste printing system for a heating element of an automobile rearview mirror, such as Figures 1-4 and Figure 13As shown, including the fixed frame 1, the fixed frame 1 is provided with a control terminal, the control terminal is prior art, not shown in the figure, the upper part of the front side of the fixed frame 1 is provided with a lifting module, the lifting module is prior art, not shown in the figure, and the lifting module is electrically connected with the control terminal, the fixed frame 1 is provided with a first connecting plate 2 through the lifting module thereon, the lifting module is used to drive the first connecting plate 2 and other parts connected thereto to move up and down synchronously, the fixed frame 1 is provided with a positioning module, the positioning module is prior art, not shown in the figure, the positioning module is used to place the raw material formed by the aluminum foil and the PET film, the first connecting plate 2 is provided with a printing screen 3 on one side through a fixing module, the fixing module is prior art, the front side of the first connecting plate 2 is provided with a driving module electrically connected with the control terminal, the driving module is prior art, and the motor and the threaded rod are taken as an example to describe in the figure, wherein the motor is fixedly connected to the first connecting plate 2 through the motor seat, the threaded rod is rotatably connected to the first connecting plate 2, the output shaft of the motor is connected with the threaded rod through a shaft coupling, the first connecting plate 2 is provided with a second connecting plate 4 through the driving module, the second connecting plate 4 is threadedly connected with the threaded rod, and the second connecting plate 4 is driven by the driving module to move left and right, the left and right sides of the second connecting plate 4 are respectively fixedly connected with a first connecting block 5 and a second connecting block 6, the first connecting block 5 and the second connecting block 6 are both provided with a moving module electrically connected with the control terminal, the moving module is prior art, the second connecting block 6 is provided with a scraper through the moving module thereon, which is used to control the extension amount of the scraper, the first connecting block 5 is fixedly connected with a connecting rod 7 through the moving module thereon, wherein the scraper and the connecting rod 7 are respectively located at the lower side of the adjacent moving module, the lower side of the connecting rod 7 is fixedly connected with an ink scraping plate 8, the ink scraping plate 8 is used to re-lay the accumulated carbon paste on the printing screen 3, the front and rear ends of the connecting rod 7 are commonly provided with a connecting mechanism, the connecting rod 7 is provided with two guide plates 9 symmetrically distributed in front and rear through the connecting mechanism, the two guide plates 9 and the ink scraping plate 8 are synchronously moved by the connecting rod 7, the guide plate 9 and the ink scraping plate 8 are both in contact with the printing screen 3, and the two guide plates 9 are both placed obliquely, the distance between the two guide plates 9 on the opposite sides gradually increases from left to right, the guide plate 9 is in contact with the ink scraping plate 8, the ink scraping plate 8 is fixedly connected with two arc-shaped plates 10 symmetrically distributed in front and rear, the arc-shaped plate 10 is in sliding cooperation with the adjacent guide plate 9, in the process of moving the two guide plates 9 to the right, the carbon paste accumulated on the left and right sides of the printing screen 3 is guided to the middle part of the printing screen 3 by the two guide plates 9, the arc-shaped plate 10 is made of an elastic deformable material, which is used to shield the connection between the ink scraping plate 8 and the guide plate 9, so as to avoid the carbon paste from leaking along the gap among the ink scraping plate 8 and the two guide plates 9 in the process of moving right.

[0035] As Figures 1-5As shown, the connecting mechanism includes two guide rods 11 symmetrically distributed in front and back, which are respectively slidably connected to the upper side of the adjacent guide plate 9, and a spring is fixed between the guide rod 11 and the adjacent guide plate 9, which is used to maintain the initial position of the adjacent guide plate 9 and reset the moved guide plate 9 to the initial position. The connecting rod 7 is provided with two arc-shaped grooves 12 symmetrically distributed in front and back, the guide rod 11 slides in the adjacent arc-shaped groove 12, the guide rod 11 drives the adjacent guide plate 9 to rotate along the adjacent arc-shaped groove 12 synchronously, and an arc-shaped spring is arranged in the arc-shaped groove 12, which is fixed with the adjacent guide rod 11, used to maintain the initial position of the adjacent guide rod 11 and reset the moved guide rod 11 to the initial position. The printing screen 3 is detachably connected with the ink blocking plate 14, which is used to intercept the carbon paste on the left side of the ink blocking plate 14. The left side of the ink blocking plate 14 is fixed with two extrusion plates 15 symmetrically distributed in front and back, both of which are provided with inclined surfaces, and the distance between the two inclined surfaces of the two extrusion plates 15 gradually decreases from left to right. The two extrusion plates 15 are respectively extruded and matched with the inclined surfaces of the adjacent guide plate 9. When the guide plate 9 moves to contact the adjacent extrusion plate 15, it is driven by the extrusion of the inclined surface of the adjacent extrusion plate 15 to rotate in the adjacent arc-shaped groove 12, so that the two guide plates 9 change to the state of parallel to each other. The center of the circle where the arc-shaped groove 12 is located is located on the straight line where the contact position of the adjacent guide plate 9 and the squeegee plate 8 is located, so as to ensure that the guide plate 9 and the squeegee plate 8 are always in contact during rotation. The extrusion assembly is arranged on the ink blocking plate 14, which is used to position the upper liquid level of the carbon paste.

[0036] As Figure 3 , Figure 6 and Figure 13As shown, the extrusion assembly comprises a first electric rotating shaft 21 electrically connected with the control terminal, the first electric rotating shaft 21 is rotatably connected to the right side of the ink stop plate 14, the upper side of the ink stop plate 14 is slidably connected with a limiting plate 22, the two guide plates 9 are limitedly matched with the limiting plate 22 after rotation, for guiding the limiting plate 22, the upper side of the limiting plate 22 is fixedly connected with a connecting frame 23, the connecting frame 23 is in contact with the ink stop plate 14, the first electric rotating shaft 21 is provided with threads, the first electric rotating shaft 21 is threadedly connected with a driving block 24, the first electric rotating shaft 21 drives the driving block 24 to move synchronously through the threads thereon, the connecting frame 23 is provided with an inclined slot, the driving block 24 slides in the inclined slot of the connecting frame 23, initially, when the driving block 24 moves left in the inclined slot of the connecting frame 23, the connecting frame 23 and the limiting plate 22 cannot move downward because they are both limited by the ink stop plate 14, thus the connecting frame 23 and the limiting plate 22 are synchronously moved left by the driving block 24, until the right side of the limiting plate 22 is flush with the left side of the ink stop plate 14, the ink stop plate 14 no longer limits the limiting plate 22, and the right side of the ink stop plate 14 is in contact with the vertical surface of the right side of the connecting frame 23, at this time, the ink stop plate 14 limits the connecting frame 23, so that the connecting frame 23 cannot drive the limiting plate 22 to continue moving left, at the same time, the limiting plate 22 is limited by the two guide plates 9, so that the limiting plate 22 and other parts connected thereto cannot rotate synchronously with the first electric rotating shaft 21, thus the movement process of the connecting frame 23 and the limiting plate 22 is first left and then downward, and the resetting process is first upward and then right, the side of the limiting plate 22 close to the printing screen 3 is provided with a linear array of detection components, the detection components are used for detecting the flowability of the carbon paste.

[0037] As shown in Figure 6 , Figure 7 and Figure 13 , the detection components comprise a connecting shell 31 fixedly connected to the lower side of the limiting plate 22, the lower side of the connecting shell 31 is fixedly connected with a positioning block 32, the limiting plate 22 drives the positioning block 32 to move synchronously through the connecting shell 31, the connecting shell 31 is made of a flexible material, for maintaining the sealing between the connecting shell 31 and the adjacent positioning block 32, avoiding the carbon paste entering between the positioning block 32 and the limiting plate 22, at the same time, when the positioning block 32 contacts with the carbon paste, limiting the carbon paste, so that the upper side of the carbon paste tends to be in a horizontal state, the upper side of the positioning block 32 is provided with a first pressure detector electrically connected with the control terminal, a first elastic member 33 is arranged between the first pressure detector and the limiting plate 22, the first elastic member 33 is a spring, for maintaining the initial position of the positioning block 32, and driving the positioning block 32 to reset to the initial position after movement.

[0038] When the rearview mirror heating element needs to be prepared using the device, the staff installs the ink blocking plate 14 and other parts connected thereto on the printing screen 3 at the appropriate position according to the position of the screen holes on the printing screen 3. After the installation of the ink blocking plate 14 and other parts connected thereto is completed, the staff pours a certain amount of carbon paste uniformly on the printing screen 3.

[0039] After the above operation is completed, the staff places the raw material on the positioning module of the fixing frame 1, and then controls the terminal to control the lifting module to move the first connecting plate 2 and other parts connected thereto downward to the printing position, i.e., the position where the lower side of the printing screen 3 is in contact with the upper side of the raw material. Then, the terminal controls the moving module on the second connecting block 6 to move the scraper downward to the position where it is in close contact with the upper side of the raw material. The terminal starts the driving module, which drives the first connecting block 5 and the second connecting block 6 and other parts connected thereto to move synchronously to the left through the transmission belt of the second connecting plate 4. The scraper scrapes the carbon paste on the printing screen 3, and the carbon paste on the printing screen 3 is pressed to pass through the screen holes on the printing screen 3 and be printed on the raw material. At the same time, the excess carbon paste is pushed to the left side of the scraper by the scraper and flows to the front and rear sides of the printing screen 3 along the front and rear sides of the scraper until the printing on the raw material is completed, i.e., after the second connecting plate 4 moves to the limit position to the left. The terminal stops the driving module.

[0040] After the printing is completed, the terminal controls the lifting module to move the first connecting plate 2 and other parts connected thereto upward to the initial position, and the staff takes out the printed raw material and places the next raw material to be printed on the positioning module.

[0041] After the terminal stops the driving module, the terminal controls the moving module on the first connecting block 5 to drive the connecting rod 7 and other parts connected thereto to move synchronously downward until the ink blocking plate 8 and the two guide plates 9 are in contact with the upper side of the raw material. The terminal stops the moving module on the first connecting block 5 and controls the moving module on the second connecting block 6 to move the scraper upward to the initial position. Then, the terminal starts the driving module to drive the second connecting plate 4 and other parts connected thereto to move to the right. The ink blocking plate 8 re-lays the carbon paste on the printing screen 3 and pushes the excess carbon paste to the right. At the same time, the two guide plates 9 guide the carbon paste distributed on the front and rear sides of the printing screen 3 to the middle part, improving the uniformity of the carbon paste on the printing screen 3 and increasing the utilization rate of the carbon paste on the front and rear sides of the printing screen 3 and reducing the waste of the carbon paste on the front and rear sides of the printing screen 3.

[0042] Until the right side of the guide plate 9 moves to the right and contacts with the adjacent extrusion plate 15, in the process of the guide plate 9 continuing to move to the right, the guide plate 9 is extruded by the inclined surface of the adjacent extrusion plate 15, and drives the adjacent guide rod 11 to rotate along the adjacent arc-shaped slot 12, and compresses the adjacent arc-shaped spring to store power, that is, the two guide plates 9 are rotated to the parallel state, and the adjacent arc-shaped plate 10 is extruded to change the bending curvature of the arc-shaped plate 10, and the carbon paste accumulated at the junction of the guide plate 9, the adjacent arc-shaped plate 10 and the doctor blade 8 is pushed to the middle by the guide plate 9 in the process of rotation, further improving the uniformity of the carbon paste on the printing screen 3.

[0043] Until the right side of the guide plate 9 moves to the right and contacts with the adjacent extrusion plate 15, in the process of the guide plate 9 continuing to move to the right, the guide plate 9 is extruded by the inclined surface of the adjacent extrusion plate 15, and drives the adjacent guide rod 11 to rotate along the adjacent arc-shaped slot 12, and compresses the adjacent arc-shaped spring to store power, that is, the two guide plates 9 are rotated to the parallel state, and the adjacent arc-shaped plate 10 is extruded to change the bending curvature of the arc-shaped plate 10, and the carbon paste accumulated at the junction of the guide plate 9, the adjacent arc-shaped plate 10 and the doctor blade 8 is pushed to the middle by the guide plate 9 in the process of rotation, further improving the uniformity of the carbon paste on the printing screen 3.

[0044] Until the right side of the guide plate 9 moves to the right and contacts with the adjacent extrusion plate 15, in the process of the guide plate 9 continuing to move to the right, the guide plate 9 is extruded by the inclined surface of the adjacent extrusion plate 15, and drives the adjacent guide rod 11 to rotate along the adjacent arc-shaped slot 12, and compresses the adjacent arc-shaped spring to store power, that is, the two guide plates 9 are rotated to the parallel state, and the adjacent arc-shaped plate 10 is extruded to change the bending curvature of the arc-shaped plate 10, and the carbon paste accumulated at the junction of the guide plate 9, the adjacent arc-shaped plate 10 and the doctor blade 8 is pushed to the middle by the guide plate 9 in the process of rotation, further improving the uniformity of the carbon paste on the printing screen 3.

[0045] When the vertical surface of the connecting frame 23 on the right side of the above-mentioned connecting frame 23 contacts the right side surface of the ink stop plate 14, in the process of the continued leftward movement of the driving block 24, the connecting frame 23 is extruded by the driving block 24 and is limited by the ink stop plate 14, thereby driving other parts connected thereto to move downward synchronously. The upper side of the carbon paste in the cavity is extruded by the positioning block 32 on the lower side of the limiting plate 22, so as to tend to be horizontal, thereby improving the uniformity of the distribution of the carbon paste in the cavity. Meanwhile, in the process of the downward movement of the positioning block 32, the carbon paste in the cavity exerts a reverse force on the positioning block 32, so as to make the positioning block 32 tend to move upward relative to the limiting plate 22, thereby gradually increasing the value detected by the first pressure detector. However, since the carbon paste is just put into use at this time, the flowability thereof is relatively high, so that the resistance experienced by the positioning block 32 in the process of the downward movement thereof is relatively small, and therefore the positioning block 32 will not move upward relative to the limiting plate 22, and the first elastic member 33 will not be deformed. The specific distance of the downward movement of the limiting plate 22 and the positioning block 32 is selected by the control terminal according to the remaining amount of the carbon paste.

[0046] Until the carbon paste in the cavity is extruded to be relatively horizontal, the control terminal reversely starts the moving module on the first electric rotating shaft 21 and the first connecting block 5, resets other parts connected thereto to the initial positions, and then stops the moving module on the first electric rotating shaft 21 and the first connecting block 5, and controls the moving module on the second connecting block 6 again to move the scraper to the position of contacting the upper side of the printing screen 3. Subsequently, the control terminal controls the printing of the raw material again according to the above-mentioned operation, and collects the excess carbon paste on the printing screen 3 again, and detects the flowability of the carbon paste by the first pressure detector. When the flowability of the carbon paste gradually deteriorates, the value detected by the first pressure detector gradually increases. When the value detected by the first pressure detector increases to a first threshold value, i.e., the extrusion force on the positioning block 32 is greater than the elastic force of the adjacent first elastic member 33, the positioning block 32 starts to move upward relative to the limiting plate 22. When the value detected by the first pressure detector continues to increase to a second threshold value, i.e., the first elastic member 33 is compressed to half of the maximum deformation amount thereof, it is proved that the carbon paste cannot be used normally, and then the control terminal urgently stops the device, so as to avoid the blockage of the mesh holes of the printing screen 3 when the flowability of the carbon paste deteriorates. Subsequently, the staff replaces the part of the carbon paste and cleans the printing screen 3, so as to continue the use of the device.

[0047] After the cleaning of the printing screen 3 is completed, the control terminal continues to print the subsequent raw material according to the above-mentioned operation. When the printing of the quantified raw material is completed, the control terminal resets all parts on the device to the initial positions, and the staff cleans the residual carbon paste on the device, so as to continue the use of the device.

[0048] In subsequent embodiments, the positioning module in the present embodiment is replaced by the storage plate 41 and other parts connected thereon.

[0049] Embodiment 2: on the basis of embodiment 1, as shown in Figure 1 , Figures 8-10 and Figure 13 , further comprising a storage plate 41 mounted on the front side of the fixed frame 1, and the storage plate 41 is located below the printing screen 3, the right side of the upper part of the storage plate 41 is rotatably connected with a second electric rotating shaft 42 electrically connected with the control terminal, the middle part of the upper side of the storage plate 41 is slidably connected with a fixed block 43 for placing raw materials, the cross-sectional area of the fixed block 43 is smaller than the area of the printing screen 3, and the fixed block 43 is in extrusion fit with the printing screen 3, ensuring that the raw materials can be closely attached to the printing screen 3, the second electric rotating shaft 42 is provided with external threads, the fixed block 43 is threadedly connected with the external threads on the second electric rotating shaft 42, and the second electric rotating shaft 42 moves the fixed block 43 through the external threads thereon during rotation, the fixed block 43 is provided with a plurality of exhaust holes arranged in a matrix and in communication with each other, the number of exhaust holes can be selected specifically, and the exhaust holes on the fixed block 43 are circumscribed with a gas pump electrically connected with the control terminal, which transports gas into the exhaust holes or exhausts the gas in the exhaust holes outward, fixing the raw materials thereon when exhausting the gas, and blowing the raw materials upward to smooth the wrinkles on the raw materials when transporting the gas, the upper left side of the fixed block 43 is fixedly connected with a backplate 44, the front left side of the storage plate 41 is rotatably connected with a third electric rotating shaft 45 electrically connected with the control terminal, the third electric rotating shaft 45 is provided with external threads, the third electric rotating shaft 45 is threadedly connected with a moving frame 46 through the external threads thereon, the moving frame 46 is slidably connected with the storage plate 41, the third electric rotating shaft 45 moves the moving frame 46 through the external threads thereon during rotation, the moving frame 46 is rotatably connected with a fourth electric rotating shaft 47 electrically connected with the control terminal, the fourth electric rotating shaft 47 is provided with external threads, the fourth electric rotating shaft 47 is threadedly connected with an extrusion shell 48 through the external threads thereon, the fourth electric rotating shaft 47 moves the extrusion shell 48 through the external threads thereon during rotation, the extrusion shell 48 and the backplate 44 cooperate to clamp and fix the left side of the raw materials, the rear part of the upper side of the storage plate 41 is slidably connected with a guide frame 49, the guide frame 49 is slidably connected with the extrusion shell 48 for guiding the extrusion shell 48 to avoid synchronous rotation of the extrusion shell 48 with the fourth electric rotating shaft 47, the left side of the extrusion shell 48 is slidably connected with two positioning plates 50 symmetrically distributed front and back, both of the two positioning plates 50 are in extrusion fit with the backplate 44 for positioning the left side of the raw materials by cooperation of the two positioning plates 50.

[0050] As shown in Figures 8-10 and Figure 13As shown, the moving frame 46 is rotationally connected with a fifth electric rotating shaft 51 electrically connected with the control terminal, the fifth electric rotating shaft 51 is provided with external threads, the first moving plate 52 is threadedly connected with the fifth electric rotating shaft 51 through the external threads thereon, the fifth electric rotating shaft 51 drives the first moving plate 52 to move through the external threads thereon in the process of rotation, the first moving plate 52 is slidably connected with the guide frame 49, the upper side of the first moving plate 52 is fixedly connected with two second pressure detectors symmetrically distributed in front and back and electrically connected with the control terminal, the two second pressure detectors are both fixedly connected with second elastic members 53, the second elastic members 53 are springs, the upper end of each second elastic member 53 is fixedly connected with a wedge-shaped block 54, the lower side of each wedge-shaped block 54 is fixedly connected with a connecting rod penetrating through the object plate 41 and slidably connected with the object plate 41, for guiding the movement of the two wedge-shaped blocks 54, in the process of movement of the first moving plate 52, the two wedge-shaped blocks 54 are driven to move synchronously by the two second pressure detectors and the two second elastic members 53 thereon, the meander plate 44 is provided with a through groove in sliding fit with the wedge-shaped blocks 54, and the wedge-shaped blocks 54 pass through the through groove of the meander plate 44 in the process of upward movement.

[0051] As Figure 9 and Figures 11-13As shown, the front side of the moving frame 46 is fixedly connected with a second moving plate 61, the second moving plate 61 is provided with an L-shaped slot, a guide block 62 is slidingly connected in the L-shaped slot of the second moving plate 61, the guide block 62 is slidingly connected with an L-shaped plate 63, a tension spring is fixedly connected between the opposite sides of the guide block 62 and the L-shaped plate 63, for maintaining the relative distance between the guide block 62 and the L-shaped plate 63, and driving the moved L-shaped plate 63 to reset to the initial position, the second moving plate 61 is fixedly connected with a self-locking motor 64 which is electrically connected with the control terminal, in the process of moving of the moving frame 46, the self-locking motor 64 and the guide block 62 are synchronously moved by the transmission of the second moving plate 61, the storage plate 41 is provided with a sliding groove which slidingly cooperates with the self-locking motor 64, the self-locking motor 64 moves in the sliding groove of the storage plate 41, a fixing rod 65 is fixedly connected with the output shaft of the self-locking motor 64, the fixing rod 65 slidingly cooperates with the guide block 62, the output shaft of the self-locking motor 64 drives the guide block 62 to move in the L-shaped slot of the second moving plate 61 through the transmission of the fixing rod 65, a moving ring 66 is slidingly connected with the fixing block 43, the moving ring 66 is made of flexible material, the moving ring 66 is provided with a rectangular hole, the matrix distributed exhaust holes on the fixing block 43 all communicate with the through holes on the moving ring 66, the through holes on the fixing block 43 are shielded by the moving ring 66, so that the through holes on the fixing block 43 no longer flow out gas, the lower side of the L-shaped plate 63 is fixedly connected with a U-shaped plate, the front side of the moving ring 66 is fixedly connected with a connecting column, the U-shaped plate on the guide block 62 extrusion cooperates with the connecting column on the moving ring 66, when the L-shaped plate 63 moves downward to the position that the U-shaped plate on the L-shaped plate 63 contacts with the connecting column on the moving ring 66, the L-shaped plate 63 drives the moving ring 66 to synchronously move, thereby changing the communication state of the through holes on the moving ring 66 and the through holes on the fixing block 43.

[0052] When the rearview mirror heating element is prepared by using the device, the control terminal starts the third electric rotating shaft 45, the third electric rotating shaft 45 drives the moving frame 46 and other parts connected therewith to synchronously move right through the external threads on the third electric rotating shaft 45, until the moving frame 46 moves right to the limit position, the control terminal stops the third electric rotating shaft 45, and the moving frame 46 and other parts connected therewith are fixed at the position.

[0053] When the moving frame 46 moves right to the limit position, the left side faces of the two positioning plates 50 synchronously move right to the position that the left side faces of the two positioning plates 50 are flush with the left side face of the meander-shaped plate 44, then the staff places the raw material on the fixing block 43, and adjusts the left side edge of the raw material to the position that the left side edge of the raw material is flush with the right side faces of the two positioning plates 50, that is, the left side edge of the raw material is positioned.

[0054] After positioning the left side of the raw material, the control terminal starts the fourth electric shaft 47, which drives the extrusion shell 48 to move downward through the external threads on it. When the extrusion shell 48 moves downward to the position where it contacts the upper side of the raw material, it extrudes the left side of the raw material during the process of continuous downward movement. The extrusion shell 48 is fixed to the left side of the raw material by cooperating with the backplate 44. After the extrusion shell 48 completes the fixation of the raw material, the control terminal stops the fourth electric shaft 47.

[0055] When the control terminal stops the fourth electric shaft 47, the control terminal starts the air pump, which transports air into the exhaust holes of the fixed block 43 matrix. The gas flows outward along the matrix-distributed exhaust holes, and then the raw material floats upward along the right side of the extrusion shell 48 due to the influence of gas flow. The gas flow stretches the raw material, avoiding the folding of the raw material caused by the staff's mistake during placement, which affects the subsequent printing process.

[0056] After blowing up the right part of the raw material, the control terminal starts the self-locking motor 64, which drives the guide block 62 to move synchronously through the fixed rod 65 transmission. The guide block 62 slides along the L-shaped slot on the second moving plate 61, and the L-shaped plate 63 moves synchronously driven by the guide block 62. When the horizontal part of the L-shaped plate 63 moves downward to contact the upper side of the raw material, the guide block 62 continues to move downward to stretch the tension spring between the guide block 62 and the vertical part of the L-shaped plate 63, increasing the extrusion force between the horizontal part of the L-shaped plate 63 and the raw material. When the guide block 62 moves to the limit position, i.e., the lower side of the guide block 62 contacts the horizontal part of the L-shaped slot on the second moving plate 61, the U-shaped plate on the L-shaped plate 63 moves downward to the position where it contacts the connecting column on the moving ring 66, i.e., the connecting column on the moving ring 66 is located in the gap of the U-shaped plate on the L-shaped plate 63.

[0057] After the guide block 62 moves to the limit position, the guide block 62 starts to move to the right under the drive of the output shaft of the self-locking motor 64, and the L-shaped plate 63 moves synchronously to the right driven by the guide block 62. The horizontal part of the L-shaped plate 63 gradually presses down the part of the raw material that floats up, making the raw material fit the upper side of the fixed block 43. During the movement of the L-shaped plate 63, the moving ring 66 rotates driven by the U-shaped plate on the L-shaped plate 63 cooperating with the connecting column on the moving ring 66. The rectangular hole on the moving ring 66 is misaligned with the adjacent exhaust hole on the fixed block 43. The matrix-distributed through holes on the fixed block 43 are gradually shielded by the moving ring 66, so that the gas cannot flow outward from the matrix-distributed through holes on the fixed block 43. This avoids the influence of the gas flowing out of the exhaust holes on the distribution of the raw material when it contacts the upper side of the fixed block 43, thereby increasing the flatness of the raw material on the upper side of the fixed block 43.

[0058] Until the guide block 62 moves to the right to the limit position, the L-shaped plate 63 synchronously moves to the right to the limit position, and the moving ring 66 completely covers the exhaust holes of the fixed block 43, then the control terminal stops the self-locking motor 64 and reversely starts the air pump, changes the gas into suction, and then the raw material is fixed on the upper side of the fixed block 43 under the influence of the gas flow in the exhaust hole of the fixed block 43, then the control terminal stops the air pump and reversely starts the self-locking motor 64 at the same time, and the output shaft of the self-locking motor 64 drives other parts connected thereto to reset to the initial position (the specific process is opposite to the above, which will not be described in detail).

[0059] After the guide block 62 and other parts connected thereto are reset to the initial position, the control terminal starts the fifth electric rotating shaft 51, which drives the first moving plate 52 to move upward through the threads thereon, the first moving plate 52 drives the two second elastic members 53 to move through the two second pressure detectors thereon, and the two second elastic members 53 drive the adjacent wedge-shaped blocks 54 to move upward synchronously, so that the two wedge-shaped blocks 54 enter the through slot of the back-shaped plate 44, until the two wedge-shaped blocks 54 move upward to contact the lower side of the raw material, in the process of the first moving plate 52 driving the two wedge-shaped blocks 54 to continue moving upward, the raw material exerts a reverse force on the two wedge-shaped blocks 54, so that the two wedge-shaped blocks 54 move downward relative to the first moving plate 52, compress the adjacent second elastic members 53, and increase the values detected by the second pressure detectors, until the first moving plate 52 moves upward to the limit position, and the two wedge-shaped blocks 54 stop moving upward synchronously.

[0060] When the two wedge-shaped blocks 54 no longer move upward, the control terminal determines the horizontal position of the two wedge-shaped blocks 54 through the values detected by the two second pressure detectors, and then determines whether the raw material is located in the middle of the fixed block 43, that is, if the values detected by the two second pressure detectors are the same, the raw material is located in the middle of the fixed block 43, if the values detected by the two second pressure detectors are different, the following describes the case that the value detected by the front second pressure detector is larger:

[0061] If the value detected by the front second pressure detector is larger, it proves that the position of the raw material on the placing plate 41 is relatively front, then the control terminal controls the fifth electric rotating shaft 51, the fourth electric rotating shaft 47 and the third electric rotating shaft 45 in turn, resets the first moving plate 52 and other parts connected thereto, the extrusion shell 48 and other parts connected thereto and the moving frame 46 and other parts connected thereto to the initial position in turn, after the above-mentioned parts are all reset to the initial position, the control terminal starts the second electric rotating shaft 42, and the second electric rotating shaft 42 drives the fixed block 43 to move backward through the thread thereon, wherein the specific distance of the backward movement of the fixed block 43 is determined by the control terminal according to the difference between the two second pressure detectors, by changing the position of the fixed block 43, the position of the raw material thereon is adjusted to the middle part of the printing screen 3, after the position of the fixed block 43 is adjusted, the control terminal prints the raw material according to the above-mentioned operation.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the protection scope of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A carbon paste printing system for automotive rearview mirror heating elements, comprising a fixing frame (1), a lifting module provided on one side of the fixing frame (1), a first connecting plate (2) provided on the fixing frame (1) via the lifting module, a positioning module provided on the fixing frame (1), a fixing module provided on one side of the first connecting plate (2), a printing screen (3) mounted on the first connecting plate (2) via the fixing module, a driving module provided on one side of the first connecting plate (2), a second connecting plate (4) mounted on the first connecting plate (2) via the driving module, a first connecting block (5) and a second connecting block (6) fixedly connected to the second connecting plate (4), both the first connecting block (5) and the second connecting block (6) being provided with a moving module, and a scraper mounted on the second connecting block (6) via the moving module thereon, characterized in that: It also includes a connecting rod (7), which is fixed to the moving module of the first connecting block (5). A scraper (8) is fixed to the side of the connecting rod (7) away from the first connecting block (5). A connecting mechanism is provided on the side of the connecting rod (7) away from the first connecting block (5). The connecting rod (7) is provided with symmetrically distributed guide plates (9) through the connecting mechanism. Both the guide plate (9) and the scraper (8) are in contact with the printing screen (3). The guide plate (9) is in contact with the scraper (8). The scraper (8) is fixed with symmetrically distributed arc plates (10). The arc plates (10) are in sliding contact with the adjacent guide plates (9). The connecting mechanism includes symmetrically distributed guide rods (11), which are slidably connected to the side of the adjacent guide plate (9) away from the printing screen (3). A spring is fixed between the guide rod (11) and the adjacent guide plate (9). The connecting rod (7) is provided with symmetrically distributed arc grooves (12). The guide rod (11) slides in the adjacent arc grooves (12). At the same time, an arc spring is provided in the arc groove (12). The arc spring is fixed to the adjacent guide rod (11). The printing screen (3) is detachably connected to an ink baffle plate (14). A symmetrically distributed extrusion plate (15) is fixed to the side of the ink baffle plate (14) near the squeegee plate (8). The extrusion plate (15) is extruded and engaged with the adjacent guide plate (9). An extrusion assembly is provided on the ink baffle plate (14). The extrusion assembly is used to position the upper liquid surface of the carbon paste. The arc plate (10) is made of an elastic deformable material and is used to block the connection between the scraper plate (8) and the guide plate (9). The center of the circle where the arc groove (12) is located is on the straight line where the adjacent guide plate (9) and the scraper plate (8) are in contact.

2. The carbon paste printing system for automotive rearview mirror heating elements according to claim 1, characterized in that: The extrusion assembly includes a first electric rotating shaft (21), which is rotatably connected to the side of the ink baffle (14) away from the squeegee (8). The side of the ink baffle (14) away from the printing screen (3) is slidably connected to a limiting plate (22). The symmetrically distributed guide plates (9) are all limited and cooperate with the limiting plate (22). The side of the limiting plate (22) away from the printing screen (3) is fixedly connected to a connecting frame (23). The connecting frame (23) is in contact with the ink baffle (14). The first electric rotating shaft (21) is provided with a thread. The first electric rotating shaft (21) is threadedly connected to a drive block (24) through the thread. The connecting frame (23) is provided with an inclined groove. The drive block (24) slides in the inclined groove of the connecting frame (23). The side of the limiting plate (22) near the printing screen (3) is provided with a linear array of detection components. The detection components are used to detect the flowability of the carbon paste.

3. A carbon paste printing system for automotive rearview mirror heating elements according to claim 2, characterized in that: The detection component includes a connecting shell (31), which is fixed to the side of the limiting plate (22) near the printing screen (3). A positioning block (32) is fixed to the side of the connecting shell (31) near the printing screen (3). A first pressure detector is provided on the side of the positioning block (32) away from the printing screen (3). A first elastic element (33) is provided between the first pressure detector and the limiting plate (22).

4. A carbon paste printing system for automotive rearview mirror heating elements according to claim 3, characterized in that: The connecting shell (31) is made of an elastic deformable material and is used to maintain the seal between the connecting shell (31) and the adjacent positioning block (32).

5. A carbon paste printing system for automotive rearview mirror heating elements according to claim 4, characterized in that: It also includes a shelf (41), which is installed on the side of the fixing frame (1) near the printing screen (3). The side of the shelf (41) near the printing screen (3) is rotatably connected to a second electric shaft (42). The side of the shelf (41) near the printing screen (3) is slidably connected to a fixing block (43). The second electric shaft (42) is provided with an external thread. The fixing block (43) is threadedly connected to the external thread on the second electric shaft (42). The fixing block (43) is provided with a matrix of interconnected exhaust holes. An air pump is connected to the exhaust holes on the fixing block (43). A U-shaped plate (44) is fixed to the side of the fixing block (43) away from the second electric shaft (42). The side of the shelf (41) away from the second electric shaft (42) is rotatably connected to a third electric shaft. (45) The third electric rotating shaft (45) is provided with an external thread. The third electric rotating shaft (45) is connected to a movable frame (46) through the external thread. The movable frame (46) is slidably connected to the shelf (41). The movable frame (46) is rotatably connected to a fourth electric rotating shaft (47). The fourth electric rotating shaft (47) is provided with an external thread. The fourth electric rotating shaft (47) is connected to an extrusion shell (48) through the external thread. The shelf (41) is slidably connected to a guide frame (49) on the side away from the second electric rotating shaft (42). The guide frame (49) is slidably connected to the extrusion shell (48). The extrusion shell (48) is slidably connected to a symmetrically distributed positioning plate (50) on the side away from the second electric rotating shaft (42). The symmetrically distributed positioning plates (50) are all extruded and fitted with the U-shaped plate (44).

6. A carbon paste printing system for automotive rearview mirror heating elements according to claim 5, characterized in that: The area of ​​the cross-section of the fixing block (43) is smaller than the area of ​​the printing screen (3), and the fixing block (43) and the printing screen (3) are pressed together.

7. A carbon paste printing system for automotive rearview mirror heating elements according to claim 6, characterized in that: The movable frame (46) is rotatably connected to a fifth electric rotating shaft (51). The fifth electric rotating shaft (51) is provided with an external thread. The fifth electric rotating shaft (51) is threaded to a first movable plate (52) through the external thread. The first movable plate (52) is slidably connected to the guide frame (49). The side of the first movable plate (52) away from the shelf (41) is fixedly connected to a symmetrically distributed second pressure detector. The symmetrically distributed second pressure detectors are all fixedly connected to a second elastic element (53). The end of the second elastic element (53) away from the adjacent second pressure detector is fixedly connected to a wedge block (54). The wedge block (54) is fixedly connected to a connecting rod that passes through the shelf (41) and is slidably connected to it. The U-shaped plate (44) is provided with a through groove that slidably engages with the wedge block (54).

8. A carbon paste printing system for automotive rearview mirror heating elements according to claim 7, characterized in that: A second movable plate (61) is fixedly connected to the side of the movable frame (46) away from the extrusion shell (48). The second movable plate (61) is provided with an L-shaped groove. A guide block (62) is slidably connected in the L-shaped groove of the second movable plate (61). An L-shaped plate (63) is slidably connected to the guide block (62). A tension spring is fixed between the opposing sides of the guide block (62) and the L-shaped plate (63). A self-locking motor (64) is fixedly connected to the second movable plate (61) through a motor base. The shelf (41) is provided with a sliding groove that slides with the self-locking motor (64). The output shaft of the device is fixedly connected to a fixing rod (65), which is slidably engaged with the guide block (62). The fixing block (43) is slidably connected to a moving ring (66), which has a rectangular hole. The exhaust holes distributed in a matrix on the fixing block (43) are all connected to the rectangular hole on the moving ring (66). The L-shaped plate (63) is fixedly connected to a U-shaped plate on the side near the shelf (41). The moving ring (66) is fixedly connected to a connecting post on the side near the second moving plate (61). The U-shaped plate and the connecting post on the moving ring (66) are pressed together.

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