Belt feeding embossing mechanism

Abstract

The utility model discloses a belt feeding embossing mechanism which comprises a machine frame, two annular belts, an upper die, a lower die, two strip-shaped magnetic attraction mechanisms, a positioning blocking mechanism, a left side tabletting mechanism, a right side tabletting mechanism and a lifting driving mechanism capable of driving the positioning blocking mechanism to ascend and descend. The pressing linkage mechanism can drive the left side tabletting mechanism and the right side tabletting mechanism to move oppositely, and the two annular belts are arranged on the rack side by side; the two strip-shaped magnetic attraction mechanisms are located below the advancing sections of the corresponding annular belts respectively. The lifting driving mechanism and the pressing linkage mechanism are both installed on the machine frame, and the positioning blocking mechanism is installed on the machine frame in a lifting mode and located below the rear section of the conveying channel. The left side tablet pressing mechanism and the right side tablet pressing mechanism are both arranged on the rack in a left-right moving mode, pressing blocks are arranged on the left side tablet pressing mechanism and the right side tablet pressing mechanism, and the pressing blocks of the left side tablet pressing mechanism and the pressing blocks of the right side tablet pressing mechanism are both located above the advancing sections of the corresponding annular belts and face the lower die.

Description

Technical Field

[0001] The utility model relates to the technical field of embossing machine equipment, in particular to a belt feeding embossing mechanism. Background Art

[0002] In the field of metal processing, a feeding embossing device is an important equipment for realizing the automatic processing of sheet metal materials. There are many deficiencies in the traditional feeding embossing device during the transportation and positioning processes. For example, the existing feeding mechanism usually uses the friction of a belt for transportation. When the annular belt is used for transportation, there is a lack of fixation for the transported materials (especially for thin iron sheets), and it is easy to shake due to belt vibration and speed fluctuations, resulting in deviation of the embossing position, poor transportation stability, and it is difficult to adapt to a high-speed embossing production line. In addition, the positioning of materials during transportation can often only achieve single-direction positioning and cannot precisely fix multiple edges of the materials, resulting in easy deviation of the materials during the embossing process and affecting the quality of the finished product. Summary of the Utility Model

[0003] The problem to be solved by the utility model is to provide a belt feeding embossing mechanism, which can adsorb and position the iron sheet during transportation, improve the position accuracy of the iron sheet during embossing, and ensure the embossing quality.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A belt feeding and embossing mechanism, comprising a frame, two endless belts, an upper die, a lower die, a conveying drive mechanism capable of driving the two endless belts to rotate, and a die closing drive mechanism capable of driving the upper die to move towards and away from the lower die. The two endless belts are arranged side by side on the frame, and a conveying channel running front to back is provided between the two endless belts. Each endless belt has a forward running section and a return running section located below the forward running section; the die closing drive mechanism is installed on the frame, the upper die is installed on the frame in a liftable manner, the lower die is installed on the frame and is located in the conveying channel, and the upper surface of the lower die is lower than the upper surfaces of the forward running sections of the two endless belts; characterized in that: it further comprises two strip-shaped magnetic attraction mechanisms, a positioning and blocking mechanism, a left pressing mechanism, a right pressing mechanism, and a lift drive mechanism capable of driving the positioning and blocking mechanism to lift, and a pressing linkage mechanism capable of driving the left pressing mechanism and the right pressing mechanism to move towards each other; the two strip-shaped magnetic attraction mechanisms are both installed on the frame and are respectively located below the forward running sections of the corresponding endless belts, and the two strip-shaped magnetic attraction mechanisms respectively extend along the conveying direction of the forward running sections of the corresponding endless belts; the lift drive mechanism and the pressing linkage mechanism are both installed on the frame, the positioning and blocking mechanism is installed on the frame in a liftable manner and is located below the rear section of the conveying channel; the left pressing mechanism and the right pressing mechanism are both arranged on the frame so as to be movable left and right, the left pressing mechanism is located on the left side of the left endless belt, the right pressing mechanism is located on the right side of the right endless belt, pressing blocks are provided on both the left pressing mechanism and the right pressing mechanism, and the pressing blocks of the left pressing mechanism and the pressing blocks of the right pressing mechanism are both located above the forward running sections of the corresponding endless belts and face the lower die.

[0006] The definitions of the above front and back are: along the conveying direction of the endless belt, the one that arrives first is the front, and the one that arrives later is the back.

[0007] When feeding materials, each iron sheet is fed onto the two endless belts one by one. The conveying drive mechanism drives the two endless belts to rotate, driving the iron sheets to be conveyed backward. The iron sheets on the two endless belts will be adsorbed by the strip-shaped magnetic attraction mechanisms during the conveying process, making the lower surfaces of the conveyed iron sheets closely adhere to the upper surfaces of the forward running sections of the two endless belts, preventing the iron sheets from shaking during conveying; when the iron sheet is conveyed between the upper die and the lower die, the two endless belts stop rotating, and at the same time the lift drive mechanism drives the positioning and blocking mechanism to rise, so that the positioning and blocking mechanism protrudes upward from the rear section of the conveying channel, preventing the iron sheet from continuing to be conveyed backward and positioning the rear side edge of the iron sheet; then, the pressing linkage mechanism drives the left pressing mechanism and the right pressing mechanism to move towards the position of the lower die in an opposite direction, so that the pressing block of the left pressing mechanism holds the left edge of the iron sheet, and the pressing block of the right pressing mechanism holds the right edge of the iron sheet, positioning the left and right side edges of the iron sheet; finally, the die closing drive mechanism drives the upper die to make a pressing action towards the lower die to perform an embossing operation on the iron sheet on the lower die.

[0008] Usually, the upper mold is connected to the power output end of the mold clamping drive mechanism. The specific structure of the mold clamping drive mechanism is the prior art, and the mold clamping drive mechanism can adopt a cylinder or an oil cylinder, or a structure in which a motor and a transmission connecting rod cooperate.

[0009] Usually, the conveying drive mechanism includes a driving roller, a driven roller and a conveying motor. The driving roller and the driven roller jointly tension the two endless belts. The driving roller is connected to the output shaft of the conveying motor. The conveying motor drives the driving roller to rotate to realize the conveying of the two endless belts.

[0010] In the preferred embodiment, the left-side pressing mechanism and the right-side pressing mechanism both include a first guide rail, a first slider, a pressing seat, a first follower guide wheel and the pressing block. The first guide rail is mounted on the frame and extends left and right. The first slider is on the first guide rail and can move on the first guide rail. The pressing seat is mounted on the first slider. The first follower guide wheel is rotatably mounted on the inner end of the pressing seat, and the inner wheel surface of the first follower guide wheel is exposed on the inner side of the inner edge of the pressing seat. The inner wheel surface of the first follower guide wheel contacts and cooperates with the edge of the material on the two forward sections of the annular belts. The pressing block is mounted on the inner end of the pressing seat, and the pressing block is exposed on the inner side of the inner edge of the pressing seat. The outer end of the pressing seat is transmission-connected to the power output end of the pressing linkage mechanism. The outer end of the pressing seat is pushed by the pressing linkage mechanism, and the pressing seat moves toward the conveying channel on the first guide rail through the first slider. At this time, the inner wheel surface of the first follower guide wheel contacts the edge of the material on the endless belt, playing a guiding role, and the pressing block moves with the pressing seat, and finally presses the side edge of the iron sheet. The above-mentioned first follower guide wheel contacts the edge of the material, providing precise guidance for the movement of the pressing seat, so that the pressing block can accurately press the edge of the iron sheet. This structure in which the first guide rail cooperates with the first slider can realize the movement of the pressing seat, with stable transmission and easy maintenance and installation.

[0011] In a further preferred embodiment, the pressing block is a truncated cone wheel with a large outer surface and a small inner surface. The truncated cone wheel can be rotatably mounted on the sheet pressing seat, and the rotating shaft of the truncated cone wheel is arranged horizontally. By arranging a truncated cone wheel with a large outer surface and a small inner surface, the small end of the truncated cone wheel is first moved toward the direction of the conveying channel, so that the small end of the truncated cone wheel is pressed on the edge of the iron sheet. Then, as the truncated cone wheel continues to move inward, the large end of the truncated cone wheel gradually presses the edge of the iron sheet through its conical surface guide, which can better fix the iron sheet and achieve a good positioning effect. Through this arrangement, the degree of compression can be adjusted through the conical surface of the truncated cone wheel, which can meet the positioning requirements of iron sheets of different thicknesses.

[0012] In a further preferred embodiment, the pressing linkage mechanism includes a driving motor, a transmission shaft, two first driven wheels, two first driving wheels, two first transmission belts and two end face cams. The driving motor is installed on the frame. The transmission shaft is rotatably installed on the frame. One end of the transmission shaft is in transmission connection with the rotating shaft of the driving motor. The two first driven wheels are respectively installed at both ends of the transmission shaft. The two first driving wheels are respectively rotatably installed on the frame and are respectively located outside the outer ends of the corresponding tablet pressing seats. Each first driven wheel and the corresponding first driving wheel jointly tension the corresponding first transmission belt. The two end face cams are respectively installed at the inner ends of the axles of the two first driving wheels. The inner end faces of the two end face cams are respectively provided with inwardly protruding bumps. The outer end of the tablet pressing seat is provided with a second guiding follower wheel. The outer wheel surface of the second guiding follower wheel is in contact and cooperation with the bumps on the inner end faces of the end face cams. When the driving motor starts, it drives the transmission shaft to rotate, causing the first driven wheels installed at both ends of the transmission shaft to rotate. The first driven wheels drive the first driving wheels and the linked end face cams to rotate through the first transmission belts. When the bumps on the inner end faces of the end face cams rotate to contact the outer wheel surface of the second guiding follower wheel at the outer end of the tablet pressing seat, it pushes the tablet pressing seat to move along the first guide rail towards the conveying channel. By combining belt drive and cam drive, the transmission is stable, and the power can be accurately transmitted to the tablet pressing mechanism to realize the synchronous movement of the tablet pressing mechanisms on both sides. Moreover, through the cooperation of the bumps of the cam and the guiding follower wheel, the moving stroke and timing of the tablet pressing seat can be accurately controlled to ensure the accuracy of the iron sheet positioning.

[0013] In a further preferred embodiment, the lifting driving mechanism includes a second guide rail, a second slider, a lifting seat, a second driven wheel, a second driving wheel, a second transmission belt, a disk cam and a third guiding follower wheel. The second guide rail is installed on the frame and extends vertically. The second slider is located on the second guide rail and can move on the second guide rail. The lifting seat is installed on the second slider. The positioning and blocking mechanism is installed on the upper end of the lifting seat. The third guiding follower wheel is rotatably installed on the lower end of the lifting seat. The second driven wheel is installed on the transmission shaft. The second driving wheel is rotatably installed on the frame. The disk cam is installed on the axle of the second driving wheel. The wheel surface of the disk cam is in contact and cooperation with the lower wheel surface of the third guiding follower wheel. The driving motor drives the transmission shaft to rotate, and the second driven wheel installed on the transmission shaft rotates accordingly. The second driven wheel drives the second driving wheel and the disk cam installed on its axle to rotate through the second transmission belt. When the disk cam rotates, its contour contacts the lower wheel surface of the third guiding follower wheel, pushing the lifting seat to move upward on the second guide rail through the second slider, causing the positioning and blocking mechanism installed on the upper end of the lifting seat to rise and protrude from the rear section of the conveying channel. The above-mentioned lifting driving mechanism and the pressing linkage mechanism share the driving motor and realize synchronous movement through the transmission structure, ensuring that the positioning and blocking mechanism rises at the appropriate time for positioning. Using the transmission shaft to transmit power reduces the separate driving devices, making the overall structure more compact and saving space.

[0014] In a further preferred solution, the positioning and blocking mechanism includes a positioning plate and a positioning block. The positioning plate is horizontally installed on the upper end of the lifting seat, and the positioning block is installed on the positioning plate. The positioning block is located below the rear section of the conveying channel. When the lifting drive mechanism drives the lifting seat to rise, the positioning plate moves upward with the lifting seat, and the positioning block rises from below the rear section of the conveying channel. The positioning block directly blocks the rearward movement of the iron sheet. The positioning method is simple and effective, and can accurately define the position of the rear side edge of the iron sheet.

[0015] In a preferred solution, the strip magnetic attraction mechanism includes a strip groove, a strip cover plate, and a strip magnet. The strip groove is installed on the frame, the notch of the strip groove faces upward, the strip magnet is installed in the strip groove, and the strip cover plate covers the notch of the strip groove. When the iron sheet is conveyed on the annular belt, it passes above the strip magnetic attraction mechanism. The strip magnet generates a magnetic field to adsorb the iron sheet, so that the lower surface of the iron sheet closely adheres to the upper surface of the forward section of the annular belt. The structures of the strip groove and the strip cover plate are convenient for installing and replacing the magnet, and the maintenance is convenient. More preferably, the strip magnet includes a plurality of magnet blocks, and each magnet block is installed in the strip groove at equal intervals. The plurality of magnet blocks are evenly distributed at equal intervals, so that the adsorption force is uniform, the iron sheet is stably adsorbed, and its shaking is prevented.

[0016] In a preferred solution, the belt feeding and embossing mechanism further includes an elastic support plate. The front side edge of the elastic support plate is installed on the frame. The elastic support plate is located in the conveying channel and gradually slopes upward from front to back. The rear side edge of the elastic support plate extends to a position where the upper surface of the elastic support plate is lower than the upper surfaces of the forward sections of the two annular belts. When the iron sheet is conveyed backward on the annular belt, it passes above the elastic support plate. The elastic support plate gradually slopes upward from front to back, providing a certain support for the iron sheet, and it can be elastically deformed to a certain extent to prevent the iron sheet from being damaged when contacting the lower die during the conveying process.

[0017] In a preferred solution, a plurality of equally spaced limiting blocks are provided on each of the two annular belts. In the conveying state of the annular belt, each limiting block is located on the upper surface of the forward section of the annular belt; the area between two adjacent limiting blocks is a material placement area for placing materials. When the annular belt rotates, the limiting blocks move with the forward section of the annular belt. The iron sheet is placed in the material placement area between two adjacent limiting blocks, and the limiting blocks play a role in limiting the position of the iron sheet to prevent the iron sheet from sliding back and forth on the annular belt.

[0018] In the preferred embodiment, the belt feeding embossing mechanism also includes a pinching detection mechanism, which is installed on the frame and is located at the front side of the conveying channel; the pinching detection mechanism includes an upper pressure roller, a lower traction roller, a detection sensor, a controller and a pinching drive motor capable of driving the lower traction roller to rotate, the upper pressure roller and the lower traction roller can be rotatably installed on the frame, the upper pressure roller is located directly above the lower traction roller, the upper pressure roller and the lower traction roller are pressed together, and one end of the lower traction roller is connected to the power output shaft of the pinching drive motor; the detection sensor is installed on the frame, the detection end of the detection sensor faces between the upper pressure roller and the lower traction roller, the signal output end of the detection sensor is electrically connected to the corresponding signal input end of the controller, and the pinching drive motor is electrically connected to the corresponding signal output end of the controller. The lower traction roller is driven to rotate by the pinching drive motor, so that each iron sheet passes between the upper pressure roller and the lower traction roller one by one, and each iron sheet is transported to the front section of the two endless belts one by one. Before transportation, the thickness of a single iron sheet is pre-set in the controller. If multiple iron sheets are conveyed in an overlapping manner during the conveying process, the detection sensor will detect that the thickness of the passing iron sheet is greater than the thickness of a single iron sheet. The detection sensor will send an iron sheet thickness signal to the controller. After processing, the controller will send a signal to the clamping drive motor to stop the clamping drive motor. After the workers take out the multiple iron sheets, the clamping drive motor will be started again to resume the conveying of the iron sheets.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The utility model uses a bar-shaped magnetic suction mechanism to absorb the iron sheet to prevent it from shaking during transportation, ensuring that the iron sheet is smoothly transported to the embossing area; and then the positioning blocking mechanism and the left and right pressing mechanisms cooperate to position the iron sheet from the rear side and the left and right side edges, thereby improving the position accuracy of the iron sheet during embossing and ensuring the embossing quality. Moreover, the various driving mechanisms of the utility model work together to realize the automated process of feeding, positioning, and embossing, reduce manual intervention, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the left and right side pressing mechanisms pressing the iron sheet in a specific embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a specific embodiment of the utility model (the upper mold and the lower mold are hidden);

[0024] Figure 4 yes Figure 3 A top view of

[0025] Figure 5 yes Figure 4The sectional view taken along A-A in [the figure];

[0026] Figure 6 is Figure 4 the sectional view taken along B-B in [the figure]. Specific implementation manner

[0027] The present utility model will be specifically described below in conjunction with the accompanying drawings and specific embodiments.

[0028] As Figures 1-6 shown, the belt feeding and embossing mechanism in this embodiment includes a frame 1, two endless belts 2, an upper die 3, a lower die 4, a conveying drive mechanism 5 capable of driving the two endless belts 2 to rotate, and a mold closing drive mechanism 6 capable of driving the upper die 3 to perform an opening and closing action towards the lower die 4. The two endless belts 2 are arranged side by side on the frame 1. A conveying channel 21 running in the front-rear direction is provided between the two endless belts 2. Each endless belt 2 has a forward running section 22 and a return running section 23 located below the forward running section 22. The mold closing drive mechanism 6 is installed on the frame 1. The upper die 3 is installed on the frame 1 in a liftable manner. The lower die 4 is installed on the frame 1 and is located in the conveying channel 21. The upper surface of the lower die 4 is lower than the upper surfaces of the forward running sections 22 of the two endless belts 2. Such a belt feeding and embossing mechanism further includes two strip-shaped magnetic attraction mechanisms 7, a positioning and blocking mechanism 8, a left pressing sheet mechanism 9, a right pressing sheet mechanism 10, a lifting drive mechanism 11 capable of driving the positioning and blocking mechanism 8 to lift, and a pressing linkage mechanism 12 capable of driving the left pressing sheet mechanism 9 and the right pressing sheet mechanism 10 to move towards each other. The two strip-shaped magnetic attraction mechanisms 7 are both installed on the frame 1 and are respectively located below the forward running sections 22 of the corresponding endless belts 2. The two strip-shaped magnetic attraction mechanisms 7 respectively extend along the conveying direction of the forward running sections 22 of the corresponding endless belts 2. The lifting drive mechanism 11 and the pressing linkage mechanism 12 are both installed on the frame 1. The positioning and blocking mechanism 8 is installed on the frame 1 in a liftable manner and is located below the rear section of the conveying channel 21. The left pressing sheet mechanism 9 and the right pressing sheet mechanism 10 are both arranged on the frame 1 so as to be movable left and right. The left pressing sheet mechanism 9 is located on the left side of the left endless belt 2, and the right pressing sheet mechanism 10 is located on the right side of the right endless belt 2. Pressing blocks 91 are provided on both the left pressing sheet mechanism 9 and the right pressing sheet mechanism 10. The pressing blocks 91 of the left pressing sheet mechanism 9 and the pressing blocks 91 of the right pressing sheet mechanism 10 are both located above the forward running sections 22 of the corresponding endless belts 2 and face the lower die 4.

[0029] The above definitions of front and rear mean: along the conveying direction of the endless belt 2, the one that arrives first is the front, and the one that arrives later is the rear.

[0030] When feeding, each iron sheet 13 is conveyed to the two endless belts 2 one by one, and the conveying driving mechanism 5 drives the two endless belts 2 to rotate, driving the iron sheets to be conveyed backward. The iron sheets on the two endless belts 2 will be adsorbed by the strip-shaped magnetic attraction mechanism 7 during the conveying process, so that the lower surface of the iron sheet 13 being conveyed is closely attached to the upper surface of the front section 22 of the two endless belts 2, so as to avoid the shaking of the iron sheet 13 during the conveying; when the iron sheet 13 is conveyed between the upper mold 3 and the lower mold 4, the two endless belts 2 stop rotating, and at the same time, the lifting driving mechanism 11 drives the positioning blocking mechanism 8 to rise, so that the positioning blocking mechanism 8 protrudes upward from the rear section of the conveying channel 21, preventing the iron sheet 13 from continuing to be conveyed backward, and positioning the rear side of the iron sheet 13; Then, the left-side pressing mechanism 9 and the right-side pressing mechanism 10 are driven to move toward the position of the lower mold 4 by pressing the linkage mechanism 12, so that the pressing block 91 of the left-side pressing mechanism 9 presses the left edge of the iron sheet 13, and the pressing block 91 of the right-side pressing mechanism 10 presses the right edge of the iron sheet 13, so as to position the left and right edges of the iron sheet 13; finally, the upper mold 3 is driven to press the lower mold 4 by the mold closing drive mechanism 6, and the iron sheet 13 on the lower mold 4 is embossed.

[0031] Usually, the upper mold 3 is connected to the power output end of the mold clamping drive mechanism 6. The specific structure of the mold clamping drive mechanism 6 is the prior art, and the mold clamping drive mechanism 6 can adopt a cylinder or an oil cylinder, or a structure in which a motor and a transmission connecting rod cooperate.

[0032] Usually, the conveying drive mechanism 5 includes a driving roller, a driven roller and a conveying motor. The driving roller and the driven roller jointly tension the two endless belts 2. The driving roller is connected to the output shaft of the conveying motor. The conveying motor drives the driving roller to rotate to realize the conveying of the two endless belts 2.

[0033] The left-side pressing mechanism 9 and the right-side pressing mechanism 10 both include a first guide rail 92, a first slider 93, a pressing seat 94, a first follower guide wheel 95 and the pressing block 91. The first guide rail 92 is mounted on the frame 1 and is in a left-right direction. The first slider 93 is on the first guide rail 92 and can move on the first guide rail 92. The pressing seat 94 is mounted on the first slider 93. The first follower guide wheel 95 is rotatably mounted on the inner end of the pressing seat 94, and the inner wheel surface of the first follower guide wheel 95 is exposed on the inner side of the inner edge of the pressing seat 94. The inner wheel surface of the first follower guide wheel 95 contacts and cooperates with the edge of the material on the forward section 22 of the two annular belts 2; the pressing block 91 is mounted on the inner end of the pressing seat 94, and the pressing block 91 is exposed on the inner side of the inner edge of the pressing seat 94; the outer end of the pressing seat 94 is transmission-connected to the power output end of the pressing linkage mechanism 12. By pressing the linkage mechanism 12 to push the outer end of the pressing seat 94, the pressing seat 94 moves toward the conveying channel 21 on the first guide rail 92 through the first slider 93. At this time, the inner wheel surface of the first follower guide wheel 95 contacts the edge of the material on the endless belt 2, playing a guiding role, and the pressing block 91 moves with the pressing seat 94, and finally presses the side edge of the iron sheet 13. The above-mentioned first follower guide wheel 95 contacts the edge of the material, providing precise guidance for the movement of the pressing seat 94, so that the pressing block 91 can accurately press the edge of the iron sheet 13. This structure in which the first guide rail 92 and the first slider 93 cooperate can realize the movement of the pressing seat 94, with stable transmission and easy maintenance and installation.

[0034] The pressing block 91 is a truncated cone wheel with a large outer surface and a small inner surface. The truncated cone wheel can be rotatably mounted on the pressing plate seat 94, and the rotating shaft of the truncated cone wheel is horizontally arranged. By setting the truncated cone wheel with a large outer surface and a small inner surface, the small end of the truncated cone wheel is first moved toward the direction of the conveying channel 21, so that the small end of the truncated cone wheel is pressed on the edge of the iron sheet 13, and then as the truncated cone wheel continues to move inward, the large end of the truncated cone wheel gradually presses the edge of the iron sheet 13 through its conical surface guide, which can better fix the iron sheet 13 and achieve a good positioning effect. Through this arrangement, the degree of compression can be adjusted through the conical surface of the truncated cone wheel, which can meet the positioning requirements of iron sheets 13 of different thicknesses.

[0035] The pressing linkage mechanism 12 includes a driving motor (not shown in the figure), a transmission shaft 121, two first driven wheels 122, two first driving wheels 123, two first transmission belts 124, and two end face cams 125. The driving motor is installed on the frame 1, and the transmission shaft 121 is rotatably installed on the frame 1. One end of the transmission shaft 121 is in transmission connection with the rotating shaft of the driving motor. The two first driven wheels 122 are respectively installed at both ends of the transmission shaft 121. The two first driving wheels 123 are respectively rotatably installed on the frame 1 and are respectively located outside the outer ends of the corresponding tablet pressing seats 94. Each first driven wheel 122 and the corresponding first driving wheel 123 jointly tension the corresponding first transmission belt 124. The two end face cams 125 are respectively installed at the inner ends of the axles of the two first driving wheels 123. The inner end faces of the two end face cams 125 are respectively provided with inwardly protruding bumps 1251. The outer end of the tablet pressing seat 94 is provided with a second guiding follower wheel 941. The outer wheel surface of the second guiding follower wheel is in contact and cooperation with the bump 1251 on the inner end face of the end face cam 125. When the driving motor starts, it drives the transmission shaft 121 to rotate, causing the first driven wheels 122 installed at both ends of the transmission shaft 121 to rotate. The first driven wheel 122 drives the first driving wheel 123 and the associated end face cam 125 to rotate through the first transmission belt 124. When the bump 1251 on the inner end face of the end face cam 125 rotates to contact the outer wheel surface of the second guiding follower wheel 941 at the outer end of the tablet pressing seat 94, it pushes the tablet pressing seat 94 to move along the first guide rail 92 towards the conveying channel 21. By combining belt transmission and cam transmission, the transmission is stable, and the power can be accurately transmitted to the tablet pressing mechanism to realize the synchronous movement of the tablet pressing mechanisms on both sides. Moreover, through the cooperation of the bump 1251 of the cam and the guiding follower wheel, the moving stroke and timing of the tablet pressing seat 94 can be accurately controlled to ensure the accuracy of the positioning of the iron sheet 13.

[0036] The lifting drive mechanism 11 includes a second guide rail 111, a second slider 112, a lifting seat 113, a second driven wheel 114, a second driving wheel 115, a second transmission belt 116, a disc cam 117 and a third follower guide wheel 118. The second guide rail 111 is installed on the frame 1 and runs vertically. The second slider 112 is located on the second guide rail 111 and can move thereon. The lifting seat 113 is installed on the second slider 112. The positioning and blocking mechanism 8 is installed on the upper end of the lifting seat 113. The third follower guide wheel 118 is rotatably installed on the lower end of the lifting seat 113. The second driven wheel 114 is installed on the transmission shaft 121. The second driving wheel 115 is rotatably installed on the frame 1. The disc cam 117 is installed on the axle of the second driving wheel 115. The cam surface of the disc cam 117 is in contact and cooperation with the lower cam surface of the third follower guide wheel 118. The driving motor drives the transmission shaft 121 to rotate, and the second driven wheel 114 installed on the transmission shaft 121 rotates accordingly. The second driven wheel 114 drives the second driving wheel 115 and the disc cam 117 installed on its axle to rotate through the second transmission belt 116. When the disc cam 117 rotates, its contour contacts the lower cam surface of the third follower guide wheel 118, pushing the lifting seat 113 to move upward on the second guide rail 111 through the second slider 112, causing the positioning and blocking mechanism 8 installed on the upper end of the lifting seat 113 to rise and protrude from the rear section of the conveying channel 21. The above-mentioned lifting drive mechanism 11 and the pressing linkage mechanism 12 share a driving motor and achieve synchronous operation through a transmission structure, ensuring that the positioning and blocking mechanism 8 rises at the appropriate time for positioning. Using the transmission shaft 121 to transmit power reduces the separate driving device, making the overall structure more compact and saving space.

[0037] The positioning and blocking mechanism 8 includes a positioning plate 81 and a positioning block 82. The positioning plate 81 is horizontally installed on the upper end of the lifting seat 113. The positioning block 82 is installed on the positioning plate 81 and is located below the rear section of the conveying channel 21. When the lifting drive mechanism 11 drives the lifting seat 113 to rise, the positioning plate 81 moves upward with the lifting seat 113, and the positioning block 82 rises from below the rear section of the conveying channel 21. The positioning block 82 directly blocks the rearward movement of the iron sheet 13, and the positioning method is simple and effective, which can accurately define the position of the rear side edge of the iron sheet 13.

[0038] The strip-shaped magnetic attraction mechanism 7 includes a strip-shaped groove 71, a strip-shaped cover plate 72, and a strip-shaped magnet 73. The strip-shaped groove 71 is installed on the frame 1, the notch of the strip-shaped groove 71 faces upward, the strip-shaped magnet 73 is installed in the strip-shaped groove 71, and the strip-shaped cover plate 72 covers the notch of the strip-shaped groove 71. When the iron sheet 13 is conveyed on the annular belt 2, it passes above the strip-shaped magnetic attraction mechanism 7. The strip-shaped magnet 73 generates a magnetic field to adsorb the iron sheet 13, so that the lower surface of the iron sheet 13 closely adheres to the upper surface of the forward section 22 of the annular belt 2. The structures of the strip-shaped groove 71 and the strip-shaped cover plate 72 are convenient for installing and replacing the magnet, and the maintenance is convenient. More preferably, the strip-shaped magnet 73 includes a plurality of magnet blocks 731, and each magnet block 731 is installed in the strip-shaped groove 71 at equal intervals. The plurality of magnet blocks 731 are equally spaced, so that the adsorption force is uniform, the iron sheet 13 is stably adsorbed, and its shaking is prevented.

[0039] This belt feeding and embossing mechanism further includes an elastic support plate 14. The front side edge of the elastic support plate 14 is installed on the frame 1. The elastic support plate 14 is located in the conveying channel 21 and gradually slopes upward from front to back. The rear side edge of the elastic support plate 14 extends to a position where the upper surface of the elastic support plate 14 is lower than the upper surface of the forward section 22 of the two annular belts 2. When the iron sheet 13 is conveyed backward on the annular belt 2, it passes above the elastic support plate 14. The elastic support plate 14 gradually slopes upward from front to back, providing a certain support for the iron sheet 13, and it can be elastically deformed to a certain extent to prevent the iron sheet 13 from being damaged when contacting the lower die 4 during the conveying process.

[0040] A plurality of equally spaced limiting blocks 24 are provided on each of the two annular belts 2. In the conveying state of the annular belt 2, each limiting block 24 is on the upper surface of the forward section 22 of the annular belt 2; the area between two adjacent limiting blocks 24 is a material placement area 241 for placing materials. When the annular belt 2 rotates, the limiting block 24 moves along with the forward section 22 of the annular belt 2. The iron sheet 13 is placed in the material placement area 241 between two adjacent limiting blocks 24, and the limiting block 24 plays a role in limiting the position of the iron sheet 13 to prevent the iron sheet 13 from sliding back and forth on the annular belt 2.

[0041] This belt feeding embossing mechanism also includes a pinching detection mechanism 15, which is installed on the frame 1 and is located at the front side of the conveying channel 21; the pinching detection mechanism 15 includes an upper pressure roller 151, a lower traction roller 152, a detection sensor 153, a controller 154 and a pinching drive motor (not shown in the figure) capable of driving the lower traction roller 152 to rotate, the upper pressure roller 151 and the lower traction roller 152 can be rotatably installed on the frame 1, the upper pressure roller 151 is located directly above the lower traction roller 152, the upper pressure roller 151 and the lower traction roller 152 are pressed against each other, and one end of the lower traction roller 152 is drivingly connected to the power output shaft of the pinching drive motor; the detection sensor 153 is installed on the frame 1, the detection end of the detection sensor 153 faces between the upper pressure roller 151 and the lower traction roller 152, the signal output end of the detection sensor 153 is electrically connected to the corresponding signal input end of the controller 154, and the pinching drive motor is electrically connected to the corresponding signal output end of the controller 154. The lower traction roller 152 is driven to rotate by the pinch driving motor, so that each iron sheet 13 passes between the upper pressure roller 151 and the lower traction roller 152 one by one, and each iron sheet 13 is transported to the front section 22 of the two endless belts 2 one by one. Before transportation, the thickness of a single iron sheet 13 is set in advance in the controller 154. If multiple iron sheets 13 are transported in a superimposed manner during the transportation process, the detection sensor 153 detects that the thickness of the iron sheet 13 passing through is greater than the thickness of the single iron sheet 13, and the detection sensor 153 sends a signal of the thickness of the iron sheet 13 to the controller 154. After processing, the controller 154 sends a signal to the pinch driving motor to stop the pinch driving motor. After the worker takes out the multiple iron sheets 13, the pinch driving motor is started again to resume the transportation of the iron sheets 13.

[0042] In addition, it should be noted that the names of the various parts of the specific embodiments described in this specification may be different, and any equivalent or simple changes made based on the structure, features and principles described in the utility model patent concept are included in the protection scope of the utility model patent. The technical personnel of the technical field to which the utility model belongs can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A belt feeding and embossing mechanism, comprising a frame, two endless belts, an upper die, a lower die, a conveying drive mechanism capable of driving the two endless belts to rotate, and a die closing drive mechanism capable of driving the upper die to perform an opening and closing action towards the lower die. The two endless belts are arranged side by side on the frame. A conveying channel extending in the front-rear direction is provided between the two endless belts. Each endless belt has a forward running section and a return running section located below the forward running section. The die closing drive mechanism is installed on the frame. The upper die is vertically movably installed on the frame. The lower die is installed on the frame and is located in the conveying channel. The upper surface of the lower die is lower than the upper surfaces of the forward running sections of the two endless belts. It is characterized in that: It further includes two strip-shaped magnetic attraction mechanisms, a positioning and blocking mechanism, a left pressing mechanism, a right pressing mechanism, a lifting drive mechanism capable of driving the positioning and blocking mechanism to lift, and a pressing linkage mechanism capable of driving the left pressing mechanism and the right pressing mechanism to move towards each other; the two strip-shaped magnetic attraction mechanisms are both installed on the frame and are respectively located below the forward sections of the corresponding annular belts, and the two strip-shaped magnetic attraction mechanisms respectively extend along the conveying directions of the forward sections of the corresponding annular belts; the lifting drive mechanism and the pressing linkage mechanism are both installed on the frame, the positioning and blocking mechanism is installed on the frame in a liftable manner and is located below the rear section of the conveying channel; the left pressing mechanism and the right pressing mechanism are both arranged on the frame so as to be movable left and right, the left pressing mechanism is located on the left side of the left annular belt, the right pressing mechanism is located on the right side of the right annular belt, pressing blocks are provided on both the left pressing mechanism and the right pressing mechanism, and the pressing blocks of the left pressing mechanism and the pressing blocks of the right pressing mechanism are both located above the forward sections of the corresponding annular belts and face the lower die.

2. The belt feeding and embossing mechanism according to claim 1, wherein: The left pressing mechanism and the right pressing mechanism both include a first guide rail, a first slider, a pressing seat, a first follower guide wheel and the pressing block. The first guide rail is installed on the frame and extends left and right. The first slider is located on the first guide rail and can move on the first guide rail. The pressing seat is installed on the first slider. The first follower guide wheel is rotatably installed at the inner end of the pressing seat, and the inner wheel surface of the first follower guide wheel is exposed inside the inner edge of the pressing seat. The inner wheel surface of the first follower guide wheel is in contact and cooperation with the edges of the materials on the forward sections of the two annular belts; the pressing block is installed at the inner end of the pressing seat and is exposed inside the inner edge of the pressing seat; the outer end of the pressing seat is in transmission connection with the power output end of the pressing linkage mechanism.

3. The belt feeding and embossing mechanism according to claim 2, wherein: The pressing block is a truncated cone wheel with a larger outer diameter and a smaller inner diameter. The truncated cone wheel is rotatably installed on the pressing seat, and the rotating shaft of the truncated cone wheel is horizontally arranged.

4. The belt feeding and embossing mechanism according to claim 2, characterized in that: The pressing linkage mechanism includes a driving motor, a transmission shaft, two first driven wheels, two first driving wheels, two first transmission belts and two end face cams. The driving motor is installed on the frame. The transmission shaft is rotatably installed on the frame. One end of the transmission shaft is in transmission connection with the rotating shaft of the driving motor. The two first driven wheels are respectively installed at both ends of the transmission shaft. The two first driving wheels are respectively rotatably installed on the frame and are respectively located outside the outer ends of the corresponding pressing seats. Each first driven wheel and the corresponding first driving wheel jointly tension the corresponding first transmission belt; the two end face cams are respectively installed at the inner ends of the axles of the two first driving wheels. Bulges protruding inwards are respectively provided on the inner end faces of the two end face cams. A second guide follower wheel is provided at the outer end of the pressing seat, and the outer wheel surface of the second follower guide wheel is in contact and cooperation with the bulges on the inner end faces of the end face cams.

5. The belt feeding and embossing mechanism according to claim 4, characterized in that: The lifting drive mechanism includes a second guide rail, a second slider, a lifting seat, a second driven wheel, a second driving wheel, a second transmission belt, a disc cam and a third follower guide wheel. The second guide rail is installed on the frame and extends vertically. The second slider is located on the second guide rail and can move along the second guide rail. The lifting seat is installed on the second slider, and the positioning and blocking mechanism is installed on the upper end of the lifting seat. The third follower guide wheel is rotatably installed on the lower end of the lifting seat. The second driven wheel is installed on the transmission shaft, the second driving wheel is rotatably installed on the frame, the disc cam is installed on the axle of the second driving wheel, and the cam surface of the disc cam is in contact and cooperation with the lower side cam surface of the third follower guide wheel.

6. The belt feeding and embossing mechanism according to claim 5, wherein: The positioning and blocking mechanism includes a positioning plate and a positioning block. The positioning plate is horizontally installed on the upper end of the lifting seat, and the positioning block is installed on the positioning plate. The positioning block is located below the rear section of the conveying channel.

7. The belt feeding and embossing mechanism according to claim 1, wherein: The strip magnetic attraction mechanism includes a strip groove, a strip cover plate and a strip magnet. The strip groove is installed on the frame, the notch of the strip groove faces upward, the strip magnet is installed in the strip groove, and the strip cover plate covers the notch of the strip groove.

8. The belt feeding and embossing mechanism according to claim 1, wherein: An elastic support plate is further included. The front side edge of the elastic support plate is installed on the frame. The elastic support plate is located in the conveying channel and slopes upward gradually from front to back. The rear side edge of the elastic support plate extends to a position where the upper surface of the elastic support plate is lower than the upper surfaces of the forward sections of the two annular belts.

9. The belt feeding and embossing mechanism according to claim 1, characterized in that: A plurality of limit blocks are arranged at equal intervals on each of the two annular belts. When the annular belts are in the conveying state, each limit block is located on the upper surface of the forward section of the annular belt. The area between two adjacent limit blocks is a material placement area.

10. The belt feeding and embossing mechanism according to claim 1, wherein: A pinch and feed detection mechanism is further included. The pinch and feed detection mechanism is installed on the frame and is located on the front side of the conveying channel. The pinch and feed detection mechanism includes an upper pressure roller, a lower traction roller, a detection sensor, a controller and a pinch and feed drive motor capable of driving the lower traction roller to rotate. The upper pressure roller and the lower traction roller are both rotatably installed on the frame. The upper pressure roller is located directly above the lower traction roller, and the upper pressure roller and the lower traction roller are pressed against each other. One end of the lower traction roller is in transmission connection with the power output shaft of the pinch and feed drive motor. The detection sensor is installed on the frame, the detection end of the detection sensor faces between the upper pressure roller and the lower traction roller, the signal output end of the detection sensor is electrically connected to the corresponding signal input end of the controller, and the pinch and feed drive motor is electrically connected to the corresponding signal output end of the controller.

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