A rotary labeler

Abstract

This invention discloses a rotary self-adhesive label printer, relating to the field of printing machinery technology. It includes a casing and a printing plate assembly. An ink cartridge is fixedly connected to the top of the casing, and an ink roller is rotatably connected to the center of the ink cartridge. A drive wheel is fixedly connected to the front end of the ink roller, and a drive assembly is located in front of the drive wheel. A stirring rod is symmetrically rotatably connected to the left and right sides of the ink cartridge, and a synchronous wheel is fixedly connected to the front end of the stirring rod. Guide wheels are symmetrically rotatably connected to the left and right sides of the casing, and an impression roller is rotatably connected to the center of the casing. A driven wheel is fixedly connected to the front end of the impression roller, and a transmission wheel is located above the driven wheel. A transmission assembly is located behind the transmission wheel, and the printing plate assembly is located outside the transmission assembly. This invention allows for convenient replacement of the printing plate during use and ensures the printing plate remains firmly fixed before and after replacement. It also prevents ink from congealing or clogging in the ink cartridge when the machine is stopped.

Description

Technical Field

[0001] This invention relates to the field of non-printing technology, specifically to a rotary self-adhesive label printer. Background Technology

[0002] Self-adhesive labels, also known as pressure-sensitive labels or instant labels, are composite materials made of paper, film, or special materials coated with adhesive on the back, and silicone-coated release liner. After printing and die-cutting, these composite materials become finished labels. To use them, simply peel off the release liner and stick them directly onto the product or other object. Most self-adhesive labels are currently printed using rotary printing presses.

[0003] Existing rotary printing presses are inconvenient for changing printing plates when printing self-adhesive labels, and the plate change time is relatively long. Furthermore, if the printing press is shut down for a long time, the ink in the ink cartridge may condense or become clogged, making it difficult to continue printing.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and proposed a rotary self-adhesive label machine. Summary of the Invention

[0005] The purpose of this invention is to provide a rotary self-adhesive label machine to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rotary self-adhesive label printer, comprising a housing and a printing plate assembly, wherein an ink cartridge is fixedly connected to the top of the housing, and an ink roller is rotatably connected to the middle of the ink cartridge, a drive wheel is fixedly connected to the front end of the ink roller, and a drive assembly is provided in front of the drive wheel, stirring rods are symmetrically rotatably connected to the left and right sides of the ink cartridge, and synchronous wheels are fixedly connected to the front ends of the stirring rods, guide wheels are symmetrically rotatably connected to the left and right sides of the housing, and an impression roller is rotatably connected to the middle of the housing, a driven wheel is fixedly connected to the front end of the impression roller, and a transmission wheel is provided above the driven wheel, the printing plate assembly is located behind the transmission wheel, and a transmission assembly is provided inside the printing plate assembly, a pressure assembly is provided at the bottom of the housing, and guide plates are fixedly connected to the left and right sides inside the housing.

[0007] Furthermore, the drive assembly includes a shaft, a drive wheel, a locking cavity, a locking groove, and an electromagnetic plate. The front end of the drive wheel is fixedly connected to the shaft, and the front of the shaft is rotatably connected to the drive wheel. The drive wheel has symmetrical locking cavities, and a locking groove is formed on one side of each locking cavity. An electromagnetic plate is fixedly connected to each locking cavity.

[0008] Furthermore, the drive assembly also includes a retaining ring, a retaining block, a retaining rod, and a retaining plate. A retaining ring is fixedly connected inside the retaining cavity, and a retaining block is fixedly connected to one end of the retaining ring. A retaining rod is fixedly connected to the middle of the retaining block, and a retaining plate is fixedly connected to the other end of the retaining rod.

[0009] Furthermore, the locking block is elastically connected to the locking cavity via a snap ring, and the locking block is tightly fitted to the shaft, while the drive wheel meshes with the synchronous wheel.

[0010] Furthermore, the printing plate assembly includes a sleeve roller, a locking cavity, a locking groove, an electromagnetic block, a printing plate, and a sliding groove. The sleeve roller is fixedly connected to the rear of the transmission wheel, and the sleeve roller has symmetrically opened locking cavities. A locking groove is opened on one side of the locking cavity, and an electromagnetic block is fixedly connected in the locking groove. A printing plate is arranged on the outside of the sleeve roller, and sliding grooves are opened at both ends of the printing plate.

[0011] Furthermore, the printing plate assembly also includes a locking spring, a locking rod, a locking plate, and a plug rod. A locking spring is fixedly connected inside the locking cavity, and a locking rod is provided inside the locking spring. A locking plate is fixedly connected to one end of the locking rod, and a plug rod is fixedly connected to the other end of the locking rod.

[0012] Furthermore, the printing plate assembly also includes a groove, a base, an air cavity, a fixing groove, an air groove, a spring, and an electromagnetic plate. The upper part of the roller has a groove, and the base is engaged and connected in the groove. The base has air cavities symmetrically opened on the left and right sides, and a fixing groove is opened above the air cavity. An air groove is opened below the air cavity. A spring is fixedly connected in the air cavity, and an electromagnetic plate is fixedly connected to the upper end of the spring.

[0013] Furthermore, the printing plate assembly also includes a sliding hole, a sliding cavity, a tension spring, a slider, and a sliding plate. A sliding hole is provided on one side of the fixing groove, and a sliding cavity is provided on the other side of the fixing groove. A tension spring is slidably connected in the sliding cavity, and a slider is fixedly connected to the other end of the tension spring. A sliding plate is fixedly connected to the other side of the slider, and the sliding plate is engaged with the printing plate through a sliding groove. The air groove communicates with the sliding hole.

[0014] Furthermore, the transmission assembly includes a main shaft, a suction machine, a vent, a partition, and an insertion hole. The main shaft is provided inside the roller, and the suction machine is fixedly connected inside the main shaft. Vents are symmetrically opened on the upper and lower sides of the main shaft, and partitions are symmetrically fixedly connected on the left and right sides of the main shaft. Insertion holes are opened on the surface of the partition, and the insertion rod is engaged with the partition through the insertion hole.

[0015] Furthermore, the pressure assembly includes guide rails, guide blocks, pressure rollers, and pressure springs. Guide rails are symmetrically provided on the front and rear sides of the housing, and guide blocks are slidably connected to the guide rails. Pressure rollers are rotatably connected between the guide blocks, and pressure springs are fixedly connected below the guide blocks.

[0016] This invention provides a rotary self-adhesive label printer, which has the following advantages: the printing plate can be easily replaced during use, and the printing plate can be firmly fixed before and after replacement. When the machine is stopped, the ink in the ink cartridge can also be prevented from condensing or clogging.

[0017] 1. In use, the external motor drives the drive wheel to rotate via a belt and pulley. At this time, the clamping block is pressed against the shaft by the clamping spring, allowing the drive wheel to drive the active wheel to rotate together. When the active wheel rotates, it drives the transmission wheel and driven wheel to rotate together. The ink roller is driven to rotate by the active wheel, causing it to coat the printing plate with ink, which is then transferred to the impression roller. The material passes between the impression roller and the pressure roller under the guidance of the guide wheel. The compression spring applies pressure to the pressure roller through the guide block, pressing the material firmly onto the impression roller for printing. The guide rail maintains the stability of the pressure roller through the guide block. When the machine stops, the electromagnetic plate is energized, attracting the clamping plate, causing it to detach from the shaft. The drive wheel no longer drives the active wheel to rotate. When the drive wheel rotates, it drives the stirring rod to rotate inside the ink cartridge via the synchronous wheel, stirring the ink and maintaining its fluidity. This prevents ink from condensing or clogging inside the ink cartridge. In summary, during use, the fluidity of the ink is maintained, preventing ink from condensing or clogging inside the ink cartridge.

[0018] 2. During printing, the insert rod, under the action of the locking spring, can engage with the partition plate through the insertion hole. This allows the transmission wheel to drive the main shaft to rotate together with the roller through the partition plate, ensuring that the base is always positioned between the partition plates. Simultaneously, the suction machine continuously draws air from the air passage through the vent hole to fix the printing plate. When changing the printing plate, energizing the electromagnetic block allows the locking plate to be attracted, thereby pulling the insert rod out of the insertion hole through the locking rod, releasing the restriction on the partition plate, and preventing the roller from driving the main shaft to rotate, thus allowing the printing plate to be replaced. In summary, during use, the printing plate can be continuously attracted and fixed, preventing it from falling off.

[0019] 3. In this invention, when replacing the printing plate, the roller carrying the base rotates outside the partition. At this time, the partition is distributed on the upper and lower sides of the main shaft, and the base is located on the left side of the roller. When the contact point on the base contacts the contact point on the partition, the suction direction of the suction machine is reversed, making the left side of the main shaft the inflation area and the right side the de-inflation area. When the base is inflating on the left side of the main shaft, air enters the air chamber and the sliding hole through the air passage. After the air pressure in the sliding hole returns to positive pressure, the tension spring can drive the sliding plate to quickly rebound through the slider, causing the sliding plate to slide out of the slide groove and return to the slide cavity, releasing the sliding plate from fixing the printing plate. At the same time, after the air pressure in the air chamber returns to normal, the spring can drive the electromagnetic plate to rebound. At this time, the electromagnetic plate is de-energized, and the printing plate can be removed from the fixing groove and fall onto the guide plate under the action of inertia. When the other end of the printing plate moves to the left side, the above process is repeated to complete the removal of the printing plate, and makes the printing plate more durable. The printing plate leaves the housing along the guide plate. When the base moves to the right, the suction machine can draw air from the air passage through the vent to the air chamber and sliding hole again. At this time, the electromagnetic plate is energized, and the iron plate at the end of the printing plate draws the end of the printing plate, which is placed on the guide plate, into the fixing groove. At the same time, the air pressure in the air chamber and sliding hole decreases, creating a negative pressure, which moves the electromagnetic plate and compresses the spring, making the sliding groove flush with the sliding chamber and sliding hole. Under the action of negative pressure, the sliding plate is drawn from the sliding chamber into the sliding hole and passes through the sliding groove, fixing the end of the printing plate. When the base moves to the right again, the other end of the printing plate is also drawn in and fixed in the fixing groove. After the printing plate is replaced, the electromagnetic block is de-energized, and the insertion rod is inserted back into the insertion hole under the action of the locking spring, maintaining negative pressure in the sliding hole and air chamber. In summary, the printing plate can be replaced conveniently during use, and removal and installation can be carried out simultaneously. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall main structure of a rotary self-adhesive label printer according to the present invention;

[0021] Figure 2 This is a top-section structural diagram of the drive wheel of a rotary self-adhesive label machine according to the present invention;

[0022] Figure 3 This is a cross-sectional front view schematic diagram of a rotary self-adhesive label machine according to the present invention;

[0023] Figure 4 This is a schematic diagram of the main cross-sectional structure of the roller sleeve of a rotary self-adhesive label machine according to the present invention;

[0024] Figure 5 This is a three-dimensional structural diagram of the main shaft of a rotary self-adhesive label printer according to the present invention;

[0025] Figure 6 This invention relates to a rotary self-adhesive label printer. Figure 4 Enlarged structural diagram at point A in the middle;

[0026] Figure 7This is a cross-sectional front view of the base of a rotary self-adhesive label printer according to the present invention.

[0027] In the diagram: 1. Housing; 2. Ink cartridge; 3. Ink roller; 4. Drive wheel; 5. Drive assembly; 501. Shaft; 502. Drive wheel; 503. Clamping cavity; 504. Clamping slot; 505. Electromagnetic plate; 506. Clamping spring; 507. Clamping block; 508. Clamping rod; 509. Clamping plate; 6. Stirring rod; 7. Synchronous wheel; 8. Guide wheel; 9. Impression roller; 10. Driven wheel; 11. Transmission wheel; 12. Printing plate assembly; 1201. Sleeve roller; 1202. Locking cavity; 1203. Locking slot; 1204. Electromagnetic block; 1205. Offset plate; 1206. Slide groove; 1207. Locking spring; 1208. Locking rod; 12 09. Locking plate; 1210. Insert rod; 1211. Embedded groove; 1212. Base; 1213. Air chamber; 1214. Fixing groove; 1215. Air groove; 1216. Spring; 1217. Electromagnetic plate; 1218. Sliding hole; 1219. Sliding cavity; 1220. Tension spring; 1221. Slider; 1222. Slide plate; 13. Transmission assembly; 1301. Main shaft; 1302. Suction machine; 1303. Vent hole; 1304. Partition plate; 1305. Insertion hole; 14. Pressure assembly; 1401. Guide rail; 1402. Guide block; 1403. Pressure roller; 1404. Compression spring; 15. Guide plate. Detailed Implementation

[0028] Please see Figures 1 to 7 The present invention provides a technical solution: a rotary self-adhesive label printer, comprising a housing 1 and a printing plate assembly 12. An ink cartridge 2 is fixedly connected to the top of the housing 1, and an ink roller 3 is rotatably connected to the middle of the ink cartridge 2. A drive wheel 4 is fixedly connected to the front end of the ink roller 3, and a drive assembly 5 is provided in front of the drive wheel 4. Stirring rods 6 are symmetrically rotatably connected to the left and right sides of the ink cartridge 2, and a synchronous wheel 7 is fixedly connected to the front end of the stirring rods 6. Guide wheels 8 are symmetrically rotatably connected to the left and right sides of the housing 1, and an impression roller 9 is rotatably connected to the middle of the housing 1. A driven wheel 10 is fixedly connected to the front end of the impression roller 9, and a transmission wheel 11 is provided above the driven wheel 10. The printing plate assembly 12 is located behind the transmission wheel 11, and a transmission assembly 13 is provided inside the printing plate assembly 12. A pressure assembly 14 is provided at the bottom of the housing 1, and guide plates 15 are fixedly connected to the left and right sides inside the housing 1.

[0029] Please see Figures 1 to 3The drive assembly 5 includes a shaft 501, a drive wheel 502, a retaining cavity 503, a retaining groove 504, and an electromagnetic plate 505. The front end of the drive wheel 4 is fixedly connected to the shaft 501, and the drive wheel 502 is rotatably connected to the front of the shaft 501. The drive wheel 502 has symmetrically formed retaining cavities 503, and a retaining groove 504 is formed on one side of the retaining cavity 503. The electromagnetic plate 505 is fixedly connected to the retaining cavity 503. The drive assembly 5 also includes a retaining spring 506, a retaining block 507, a retaining rod 508, and a retaining plate 509. The retaining spring 506 is fixedly connected to the retaining cavity 503, and a retaining block 507 is fixedly connected to one end of the retaining spring 506. The machine housing 1 is fixedly connected to a locking rod 508, and the other end of the locking rod 508 is fixedly connected to a locking plate 509. The locking block 507 is elastically connected to the locking cavity 503 through a locking spring 506, and the locking block 507 is tightly fitted to the shaft 501. The drive wheel 502 meshes with the synchronous wheel 7. The pressure assembly 14 includes a guide rail 1401, a guide block 1402, a pressure roller 1403 and a compression spring 1404. The machine housing 1 is symmetrically provided with guide rails 1401 on the front and rear sides, and the guide block 1402 is slidably connected to the guide rail 1401. The pressure roller 1403 is rotatably connected between the guide blocks 1402, and the compression spring 1404 is fixedly connected below the guide block 1402.

[0030] The specific operation is as follows: During use, the external motor drives the drive wheel 502 to rotate via a belt and pulley. At this time, the clamping block 507 is pressed against the shaft 501 under the action of the clamping spring 506, so that the drive wheel 502 can drive the driving wheel 4 to rotate together via the shaft 501. When the driving wheel 4 rotates, it can drive the transmission wheel 11 and the driven wheel 10 to rotate together. The ink roller 3 is driven to rotate by the driving wheel 4, so that the ink roller 3 coats the ink onto the printing plate 1205 and then transfers it to the impression roller 9. The material passes between the impression roller 9 and the pressure roller 1403 under the guidance of the guide wheel 8. The pressure spring 1404 applies pressure to the pressure roller 1403 through the guide block 1402. The material is pressed onto the printing roller 9 for printing. The guide rail 1401 can maintain the stability of the pressure roller 1403 through the guide block 1402. When the machine stops, the electromagnetic plate 505 is energized and attracts the card plate 509, thereby causing the card plate 509 to detach from the shaft 501. The drive wheel 502 no longer drives the drive wheel 4 to rotate. When the drive wheel 502 rotates, it can drive the stirring rod 6 to rotate in the ink cartridge 2 through the synchronous wheel 7 to stir the ink, thereby maintaining the fluidity of the ink in the ink cartridge 2 and preventing the ink from condensing or clogging in the ink cartridge 2. In summary, the fluidity of the ink can be maintained during use, and the ink from condensing or clogging in the ink cartridge 2 can be prevented.

[0031] Please see Figures 3 to 7The printing plate assembly 12 includes a roller 1201, a locking cavity 1202, a locking groove 1203, an electromagnetic block 1204, a printing plate 1205, and a sliding groove 1206. The roller 1201 is fixedly connected to the rear of the drive wheel 11, and the roller 1201 has symmetrically opened locking cavities 1202. A locking groove 1203 is opened on one side of the locking cavity 1202, and an electromagnetic block 1204 is fixedly connected in the locking groove 1203. The printing plate 1205 is arranged on the outside of the roller 1201, and the printing plate 1205 has sliding grooves 1206 at both ends. The printing plate assembly 12 also includes a locking spring 1207, a locking rod 1208, a locking plate 1209, and an insert rod 1210. The locking cavity 1202 is fixedly connected to the roller 1201. A locking spring 1207 is fixedly connected, and a locking rod 1208 is provided inside the locking spring 1207. One end of the locking rod 1208 is fixedly connected to a locking plate 1209, and the other end of the locking rod 1208 is fixedly connected to an insert rod 1210. The printing plate assembly 12 also includes a groove 1211, a base 1212, an air cavity 1213, a fixing groove 1214, an air groove 1215, a spring 1216, and an electromagnetic plate 1217. The upper part of the roller 1201 has a groove 1211, and the base 1212 is engaged and connected in the groove 1211. Air cavities 1213 are symmetrically opened on the left and right sides of the base 1212, and a fixing groove 1214 is opened above the air cavity 1213. An air groove 1215 is provided below the air chamber 1213. A spring 1216 is fixedly connected inside the air chamber 1213, and an electromagnetic plate 1217 is fixedly connected to the upper end of the spring 1216. The printing plate assembly 12 also includes a sliding hole 1218, a sliding cavity 1219, a tension spring 1220, a slider 1221, and a sliding plate 1222. A sliding hole 1218 is provided on one side of the fixing groove 1214, and a sliding cavity 1219 is provided on the other side of the fixing groove 1214. A tension spring 1220 is slidably connected inside the sliding cavity 1219, and a slider 1221 is fixedly connected to the other end of the tension spring 1220. A sliding plate 1222 is fixedly connected to the other side of the slider 1221. The transmission assembly 13 includes a main shaft 1301, a suction machine 1302, a vent 1303, a partition 1304, and an insertion hole 1305. The main shaft 1301 is provided inside the roller 1201, and the suction machine 1302 is fixedly connected inside the main shaft 1301. Ventilation holes 1303 are symmetrically opened on the upper and lower sides of the main shaft 1301, and partitions 1304 are symmetrically fixedly connected on the left and right sides of the main shaft 1301. Insertion holes 1305 are opened on the surface of the partition 1304, and the insertion rod 1210 is engaged with the partition 1304 through the insertion hole 1305.

[0032] The specific operation is as follows: During printing, the insert rod 1210, under the action of the locking spring 1207, can engage with the partition plate 1304 through the insertion hole 1305. This allows the transmission wheel 11 to drive the main shaft 1301 to rotate through the partition plate 1304 when it drives the roller 1201 to rotate. This ensures that the base 1212 is always positioned between the partition plates 1304. Simultaneously, the suction machine 1302 continuously evacuates air from the air passage through the vent hole 1303 to fix the printing plate 1205. When changing the printing plate 1205, the electromagnetic block 1204 is energized, which attracts the locking plate 1209. This allows the insert rod 1210 to be pulled out of the insertion hole 1305 through the locking rod 1208, releasing the restriction on the partition plate 1304 and preventing the roller 1201 from driving the main shaft 1301. The shaft 1301 rotates, thereby replacing the printing plate 1205. In summary, during use, the printing plate 1205 can be continuously adsorbed and fixed, preventing it from falling off. When replacing the printing plate 1205, the roller 1201, carrying the base 1212, rotates outside the partition 1304. At this time, the partition 1304 is distributed on the upper and lower sides of the main shaft 1301, and the base 1212 is located on the left side of the roller 1201. When the contact points on the base 1212 contact the contact points on the partition 1304, the suction direction of the suction machine 1302 reverses, making the left side of the main shaft 1301 the inflation area and the right side the de-inflation area. When the base 1212 inflates on the left side of the main shaft 1301, air enters the air chamber 1213 and the sliding hole 121 through the air passage. 8. After the air pressure in the sliding hole 1218 returns to positive pressure, the tension spring 1220 can drive the sliding plate 1222 to quickly rebound through the slider 1221, causing the sliding plate 1222 to slide out of the sliding groove 1206 and return to the sliding cavity 1219, releasing the sliding plate 1222 from fixing the printing plate 1205. At the same time, after the air pressure in the air cavity 1213 returns to normal, the spring 1216 can drive the electromagnetic plate 1217 to rebound. At this time, the electromagnetic plate 1217 is de-energized, and the printing plate 1205 can be removed from the fixing groove 1214 under the action of inertia and fall onto the guide plate 15. When the other end of the printing plate 1205 moves to the left side, the above process is repeated to complete the removal of the printing plate 1205, and the printing plate 1205 leaves the housing 1 along the guide plate 15. When the base 1212... After moving to the right side, the suction machine 1302 can once again draw air from the air passage through the vent 1303 into the air chamber 1213 and the sliding hole 1218. At this time, the electromagnetic plate 1217 is energized, and the iron plate at the end of the adhesive plate 1205 is drawn into the fixing groove 1214 through the iron plate at the end of the guide plate 15. At the same time, the air pressure in the air chamber 1213 and the sliding hole 1218 decreases, forming a negative pressure, which drives the electromagnetic plate 1217 to move and compresses the spring 1216, making the sliding groove 1206 flush with the sliding chamber 1219 and the sliding hole 1218. Under the action of negative pressure, the sliding plate 1222 is drawn from the sliding chamber 1219 into the sliding hole 1218 and passes through the sliding groove 1206, fixing the end of the adhesive plate 1205. When the base 1212 moves to the right side again...The other end of the printing plate 1205 is also sucked in and fixed in the fixing groove 1214. After the replacement of the printing plate 1205 is completed, the electromagnetic block 1204 is de-energized, and the insertion rod 1210 is reinserted into the insertion hole 1305 under the action of the locking spring 1207, maintaining negative pressure in the sliding hole 1218 and the air chamber 1213. In summary, the printing plate 1205 can be easily replaced during use, and removal and installation can be performed simultaneously.

[0033] In summary, this rotary self-adhesive label printer operates as follows: First, the external motor drives the drive wheel 502 to rotate via a belt and pulley. At this time, the clamping block 507 is pressed against the shaft 501 by the clamping spring 506, allowing the drive wheel 502 to drive the driving wheel 4 to rotate via the shaft 501. When the driving wheel 4 rotates, it drives the transmission wheel 11 and the driven wheel 10 to rotate together. The ink roller 3 is driven to rotate by the driving wheel 4, causing it to coat the printing plate 1205 with ink, which is then transferred to the impression roller 9. Guided by the guide wheel 8, the material passes between the impression roller 9 and the pressure roller 1403. The compression spring 1404 applies pressure to the pressure roller 1403 via the guide block 1402, pressing the material firmly onto the impression roller 9 for printing. The guide rail 1401 can guide the material through the printing plate 9. Block 1402 maintains the stability of pressure roller 1403. When the machine stops, electromagnetic plate 505 is energized, attracting clamping plate 509, causing clamping plate 509 to detach from shaft 501. Drive wheel 502 no longer drives drive wheel 4. When drive wheel 502 rotates, it can drive stirring rod 6 to rotate in ink cartridge 2 through synchronous wheel 7, stirring the ink and maintaining its fluidity in ink cartridge 2, thus preventing ink from condensing or clogging. During printing, insertion rod 1210, under the action of locking spring 1207, can engage with partition plate 1304 through insertion hole 1305, so that when drive roller 11 rotates, it can drive main shaft 1301 to rotate together through partition plate 1304, keeping base 1212 always in position. Between the partitions 1304, the suction machine 1302 continuously draws air from the air passage through the vent 1303 to fix the printing plate 1205. When replacing the printing plate 1205, the electromagnetic block 1204 is energized, which attracts the locking plate 1209, thereby pulling the insertion rod 1210 out of the insertion hole 1305 through the locking rod 1208, releasing the restriction on the partitions 1304, so that the sleeve roller 1201 no longer drives the main shaft 1301 to rotate, thus replacing the printing plate 1205. When replacing the printing plate 1205, the sleeve roller 1201 carries the base 1212 and rotates outside the partitions 1304. At this time, the partitions 1304 are distributed on the upper and lower sides of the main shaft 1301 and the base 1212 is located on the left side of the sleeve roller 1201. When the base 1212... After the contacts on the main shaft 1301 make contact with the contacts on the partition 1304, the suction direction of the suction machine 1302 is reversed, making the left side of the main shaft 1301 the inflation area and the right side of the main shaft 1301 the suction area. When the base 1212 is inflating on the left side of the main shaft 1301, air enters the air chamber 1213 and the sliding hole 1218 through the air passage. After the air pressure in the sliding hole 1218 returns to positive pressure, the tension spring 1220 can drive the slide plate 1222 to quickly rebound through the slider 1221, so that the slide plate 1222 slides out of the slide groove 1206 and returns to the slide chamber 1219, releasing the fixation of the slide plate 1222 to the rubber plate 1205. At the same time, after the air pressure in the air chamber 1213 returns to normal, the spring 1216 can drive the electromagnetic plate 1217 to rebound. At this time, the electromagnetic plate 1217 is de-energized.Under inertia, the printing plate 1205 can detach from the fixing groove 1214 and fall onto the guide plate 15. After the other end of the printing plate 1205 moves to the left, the above process is repeated to remove the printing plate 1205, allowing it to leave the housing 1 along the guide plate 15. When the base 1212 moves to the right, the suction machine 1302 can again draw air from the air passage through the vent 1303 to the air chamber 1213 and the sliding hole 1218. At this time, the electromagnetic plate 1217 is energized, and the iron plate at the end of the printing plate 1205 is drawn into the fixing groove 1214 through the iron plate at the end of the printing plate 1205 placed on the guide plate 15. At the same time, the air in the air chamber 1213 and the sliding hole 1218 is drawn into the fixing groove 1214. The pressure drop creates a negative pressure, causing the electromagnetic plate 1217 to move and compressing the spring 1216. This aligns the slide groove 1206 with the slide cavity 1219 and the slide hole 1218. Under the negative pressure, the slide plate 1222 is drawn from the slide cavity 1219 into the slide hole 1218 and passes through the slide groove 1206, fixing the end of the printing plate 1205. When the base 1212 moves to the right again, the other end of the printing plate 1205 is also drawn in and fixed in the fixing groove 1214. After the replacement of the printing plate 1205 is completed, the electromagnetic block 1204 is de-energized, and the insertion rod 1210 is reinserted into the insertion hole 1305 under the action of the locking spring 1207, maintaining a negative pressure in the slide hole 1218 and the air cavity 1213.

[0034] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A rotary self-adhesive label printer, characterized in that, The assembly includes a housing (1) and a printing plate assembly (12). An ink cartridge (2) is fixedly connected to the top of the housing (1), and an ink roller (3) is rotatably connected to the middle of the ink cartridge (2). A drive wheel (4) is fixedly connected to the front end of the ink roller (3), and a drive assembly (5) is located in front of the drive wheel (4). Stirring rods (6) are symmetrically rotatably connected to the left and right sides of the ink cartridge (2), and a synchronous wheel (7) is fixedly connected to the front end of the stirring rods (6). The housing (1) is symmetrically rotatably connected to... A guide wheel (8) is provided, and an impression roller (9) is rotatably connected to the middle of the housing (1). A driven wheel (10) is fixedly connected to the front end of the impression roller (9), and a transmission wheel (11) is provided above the driven wheel (10). The printing plate assembly (12) is located behind the transmission wheel (11), and a transmission assembly (13) is provided inside the printing plate assembly (12). A pressure assembly (14) is provided at the lower part of the housing (1), and guide plates (15) are fixedly connected to the left and right sides inside the housing (1). The drive assembly (5) includes a shaft (501), a drive wheel (502), a locking cavity (503), a locking groove (504), and an electromagnetic plate (505). The front end of the drive wheel (4) is fixedly connected to the shaft (501), and the front of the shaft (501) is rotatably connected to the drive wheel (502). The drive wheel (502) has symmetrically opened locking cavities (503), and a locking groove (504) is opened on one side of the locking cavity (503). The electromagnetic plate (505) is fixedly connected in the locking cavity (503). The drive assembly (5) further includes a retaining ring (506), a retaining block (507), a retaining rod (508), and a retaining plate (509). The retaining ring (506) is fixedly connected in the retaining cavity (503), and the retaining block (507) is fixedly connected to one end of the retaining ring (506). The retaining rod (508) is fixedly connected to the middle of the retaining block (507), and the retaining plate (509) is fixedly connected to the other end of the retaining rod (508). The locking block (507) is elastically connected to the locking cavity (503) via a snap ring (506), and the locking block (507) is tightly fitted to the shaft (501). The drive wheel (502) meshes with the synchronous wheel (7). The printing plate assembly (12) includes a roller (1201), a locking cavity (1202), a locking groove (1203), an electromagnetic block (1204), a printing plate (1205), and a sliding groove (1206). The roller (1201) is fixedly connected to the rear of the transmission wheel (11), and the roller (1201) has symmetrically opened locking cavities (1202). A locking groove (1203) is opened on one side of the locking cavity (1202), and an electromagnetic block (1204) is fixedly connected in the locking groove (1203). A printing plate (1205) is provided on the outside of the roller (1201), and sliding grooves (1206) are opened at both ends of the printing plate (1205). The printing plate assembly (12) further includes a locking spring (1207), a locking rod (1208), a locking plate (1209), and a plug rod (1210). The locking spring (1207) is fixedly connected inside the locking cavity (1202), and the locking rod (1208) is provided inside the locking spring (1207). One end of the locking rod (1208) is fixedly connected to the locking plate (1209), and the other end of the locking rod (1208) is fixedly connected to the plug rod (1210). The printing plate assembly (12) further includes a groove (1211), a base (1212), an air cavity (1213), a fixing groove (1214), an air groove (1215), a spring (1216), and an electromagnetic plate (1217). The upper part of the roller (1201) is provided with a groove (1211), and the base (1212) is engaged and connected in the groove (1211). The base (1212) is symmetrically provided with air cavities (1213) on the left and right sides. The fixing groove (1214) is provided above the air cavity (1213), and the air groove (1215) is provided below the air cavity (1213). The spring (1216) is fixedly connected in the air cavity (1213), and the electromagnetic plate (1217) is fixedly connected to the upper end of the spring (1216). The printing plate assembly (12) further includes a sliding hole (1218), a sliding cavity (1219), a tension spring (1220), a slider (1221), and a sliding plate (1222). The fixing groove (1214) has a sliding hole (1218) on one side and a sliding cavity (1219) on the other side. The tension spring (1220) is slidably connected in the sliding cavity (1219), and the slider (1221) is fixedly connected to the other end of the tension spring (1220). The sliding plate (1222) is fixedly connected to the other side of the slider (1221), and the sliding plate (1222) is engaged with the printing plate (1205) through a sliding groove (1206). The air groove (1215) communicates with the sliding hole (1218). The transmission assembly (13) includes a main shaft (1301), a suction machine (1302), a vent (1303), a partition (1304), and a socket (1305). The main shaft (1301) is provided inside the sleeve roller (1201), and the suction machine (1302) is fixedly connected inside the main shaft (1301). The main shaft (1301) has symmetrical vents (1303) on its upper and lower sides, and the partition (1304) is symmetrically fixedly connected to the left and right sides of the main shaft (1301). The partition (1304) has a socket (1305) on its surface, and the insertion rod (1210) is engaged with the partition (1304) through the socket (1305). The pressure assembly (14) includes a guide rail (1401), a guide block (1402), a pressure roller (1403), and a pressure spring (1404). The housing (1) has guide rails (1401) symmetrically arranged on the front and rear sides, and the guide block (1402) is slidably connected inside the guide rail (1401). The pressure roller (1403) is rotatably connected between the guide blocks (1402), and the pressure spring (1404) is fixedly connected below the guide block (1402).

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