Adhesive tape printing device

Abstract

The invention discloses an adhesive tape printing device which comprises a machine base assembly, printing assemblies and a stretching assembly, the printing assemblies are evenly distributed on the machine base assembly and used for rolling and printing the surface of an adhesive tape, and the stretching assembly is arranged on the machine base assembly and used for stretching and straightening the adhesive tape. The printing assembly comprises a printing assembly and a replacement assembly, the replacement assembly is arranged on the printing assembly, and the printing assembly comprises two butt joint blocks, two gears, a rotating shaft, a first belt pulley, two rectangular plates, four cover plates, two round rods, two printing rollers, a first sliding rail, a first sliding block, a rotating rod, an ink cylinder, a round plate and three insertion blocks. The two butt joint blocks are both arranged on the machine base assembly. The adhesive tape printing device provided by the invention has the advantages that overturning replacement is carried out when a new printing pattern is replaced, the adhesive tape printing does not need to be stopped due to disassembly and replacement, and the influence on the printing efficiency caused by replacement of a printing appliance is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of tapes, and particularly to a tape printing device. Background Art

[0002] A tape is composed of a base material and an adhesive. By bonding, two or more non-connected objects can be joined together. A layer of adhesive is coated on its surface. The earliest adhesives came from animals and plants. In the 19th century, rubber was the main component of adhesives; while nowadays, various polymers are widely used. The adhesive can stick things because bonds are formed between its own molecules and the molecules of the object to be joined. These bonds can firmly bond the molecules together. The components of the adhesive vary depending on different brands and types, and there are various polymers. Tapes are daily necessities, and according to their functions, they can be divided into: high-temperature tapes, double-sided tapes, insulating tapes, special tapes, pressure-sensitive tapes, die-cut tapes. Different functions are suitable for different industry needs. In the prior art, patent number: 201711357132.X, application date: December 16, 2017, a tape printing device is disclosed. It includes a conveyor belt, a conveyor shaft, a support rod, a cross beam, an adjusting bolt, a connecting rod, an adjusting groove, a rotating shaft, a roller, and a printing layer. The conveyor belt is connected to the conveyor shaft. The upper end of the main support rod is connected to the cross beam. The cross beam is connected to the adjusting bolt. The cross beam is connected to the connecting rod. The adjusting groove is provided on the connecting rod. One end of the connecting rod is connected to the rotating shaft. Its beneficial effects are as follows: A conveyor belt is provided at the bottom of the device. The conveyor belt is driven by the conveyor shaft. The conveyor shaft can continuously drive the conveyor belt and continuously drive the tape. A roller is provided above the conveyor belt, and a printing layer is provided on the outer side of the roller. The tape is continuously printed by the reciprocating rolling of the roller. The printing effect is obvious. And an adjusting groove is provided on the connecting rod, which can cooperate with the adjusting bolt to adjust the height, facilitating the adjustment of the fitting degree of the roller, and having a wide range of applications.

[0003] However, there are still deficiencies in the above structure. Since there are various tape prints and printing equipment generally has a high cost, when replacing the printing roller for the printing pattern during the production of printed tapes, it is necessary to stop printing the tape and the staff needs to hold a disassembly tool to disassemble and replace the printing die, making it rather troublesome to replace the printing die. Stopping the printing of the tape during replacement affects the printing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a tape printing device, which has the advantages of being flipped and replaced when replacing a new printing pattern, without having to stop printing the tape due to disassembly and replacement, and reducing the impact on printing efficiency caused by replacing printing tools, so as to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solutions: A tape printing device includes a machine base assembly, a printing assembly, and a stretching assembly. The printing assemblies are evenly distributed on the machine base assembly for roll-pressing and printing on the surface of the tape, and the stretching assembly is arranged on the machine base assembly for stretching and straightening the tape.

[0006] Further, the printing assembly includes a printing component and a replacement component. The replacement component is arranged on the printing component. The printing component includes two docking blocks, two gears, a rotating shaft, a first pulley, two rectangular plates, four cover plates, two round rods, two printing rollers, a first slide rail, a first slider, a rotating rod, an ink cartridge, a round plate, and three insertion blocks. The two docking blocks are both arranged on the machine base assembly. The two gears are respectively fixedly installed on the outer walls of one sides of the two docking blocks. The two gears mesh with each other. The rotating shaft is fixedly installed on the outer wall of the corresponding gear. The first pulley is fixedly sleeved on the rotating shaft. The two rectangular plates are both arranged above the machine base assembly. The four cover plates are respectively fixedly installed on the two rectangular plates through fasteners. The two round rods are respectively rotatably installed between the two rectangular plates and the four cover plates. The two printing rollers are respectively fixedly sleeved on the two round rods. The first slide rail is fixedly installed on the outer wall of the corresponding rectangular plate. The first slider is slidably installed in the first slide rail. The rotating rod is rotatably installed on the first slider. The ink cartridge is fixedly sleeved on the rotating rod. The round plate is rotatably installed on the corresponding rectangular plate. The rotating rod is rotatably connected to the round plate. The three insertion blocks are respectively fixedly installed on one ends of the two round rods and the rotating rod.

[0007] Further, a transmission belt is sleeved on the first pulley.

[0008] Further, the cross-section of the insertion block is rhombus-shaped. A rhombus-shaped groove is formed on the docking block. The insertion block is adapted to the rhombus-shaped groove.

[0009] Further, the machine base assembly includes a base, an installation box, a first motor, and a rectangular box. The installation box is fixedly installed on the top of the base. The first motor is fixedly installed on the inner wall of one side of the installation box. The rectangular box is fixedly installed on the top of the base. The docking block is rotatably installed on the installation box. The rotating shaft is rotatably connected to the installation box. The output shaft of the first motor is fixedly connected to the corresponding gear.

[0010] Further, the replacement component includes a vertical plate, a sliding frame, a second motor, two cylinders, a second slide rail, and two second sliders. The vertical plate is fixedly installed on the top of the base. The sliding frame is slidably installed on the vertical plate. The second motor is fixedly installed on the sliding frame. The output shaft of the second motor is fixedly connected to the corresponding rectangular plate. The two cylinders are both fixedly installed on the outer wall of one side of the vertical plate. The second slide rail is fixedly installed on the outer wall of one side of the corresponding rectangular plate. The two second sliders are both slidably installed in the second slide rail. The two second sliders are fixedly connected to the output ends of the two cylinders.

[0011] Further, the stretching component includes a straightening component and an adjusting component. The straightening component includes four rectangular openings, four mounting blocks, two connecting rods, two second pulleys, a third motor, and two roller pressing cylinders. The four rectangular openings are all formed in the rectangular box. The four mounting blocks are respectively slidably installed in the four rectangular openings. The two connecting rods are respectively rotatably installed on the four mounting blocks. The two second pulleys are respectively fixedly installed on the two connecting rods. The third motor is fixedly installed on the outer wall of one side of the corresponding mounting block. The output shaft of the third motor is fixedly connected to one end of the corresponding connecting rod. The two roller pressing cylinders are respectively fixedly sleeved on the two connecting rods.

[0012] Further, a transmission belt is sleeved on the two second pulleys.

[0013] Further, the adjusting component includes two support plates, a bidirectional screw, two adjusting plates, and a fourth motor. The two support plates are both fixedly installed on the outer wall of one side of the rectangular box. The bidirectional screw is rotatably installed on the support plates. The two adjusting plates are both threadedly installed on the bidirectional screw. The two adjusting plates are respectively fixedly connected to the two mounting blocks. The fourth motor is fixedly installed on the top of the corresponding support plate. The output end of the fourth motor is fixedly connected to the top end of the bidirectional screw.

[0014] In summary, due to the adoption of the above technologies, the beneficial effects of the present invention are as follows: By setting the printing component in the present invention, when the first motor is started, as Figure 5 shown, the first motor drives the lower gear to rotate. The lower gear meshes with and drives the upper gear. The upper gear rotates due to the meshing drive and drives the rotating shaft to rotate. The rotating shaft drives the first pulley to rotate. When the two gears rotate, they respectively drive the two docking blocks to rotate. The two docking blocks respectively drive the round rod and the rotating rod to rotate. The rotating rod drives the ink cylinder to rotate. The round rod drives the printing roller to rotate. When the ink cylinder rotates, it applies ink to the printing roller. The ink is printed on the tape through the printing roller for printing. When the cylinder is started, the output shaft of the cylinder retracts and pulls the rectangular plate to move. The rectangular plate respectively drives the round rod and the rotating rod to move. The round rod and the rotating rod drive the inserted block to move and disengage from the docking block. When the second motor is started, the second motor drives the rectangular plate to flip, asFigure 5 As shown, when the rectangular plate flips, it drives the printing roller above to flip downwards and replaces the original printing roller below. At this time, the printing roller and the ink cylinder are rotated so that the insertion blocks on the round rod and the rotating rod are aligned with the docking blocks. The air cylinder is activated to push the rectangular plate back to its original position for printing. During printing, the fasteners on the upper cover plate and the rectangular plate are removed by an external disassembly tool, and the printing roller is replaced. It has the advantages of flipping and replacing when changing to a new printing pattern, and printing and replacement can be carried out simultaneously. There is no need to stop printing the tape due to disassembly and replacement, reducing the impact on printing efficiency caused by replacing printing tools.

[0015] In the present invention, by setting a stretching component and starting the second motor, as Figure 8 shown, the second motor drives the connecting rod above to rotate. The connecting rod drives the pulley to rotate, and the pulley is driven by a transmission belt, so that the pulley below rotates. The pulley below drives the connecting rod to rotate on the mounting block, and both connecting rods drive the roller pressing cylinder to rotate clockwise. It has the advantages of roller pressing and straightening the tape to prevent the tape from wrinkling and causing misalignment in subsequent printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of a tape printing device of the present invention; Figure 2 is a front view structure schematic diagram of a tape printing device of the present invention; Figure 3 is a front view sectional structure schematic diagram of a tape printing device of the present invention; Figure 4 is a rear view sectional structure schematic diagram of a tape printing device of the present invention; Figure 5 is a left view sectional structure schematic diagram of a tape printing device of the present invention; Figure 6 In the present invention Figure 5 is an enlarged structure schematic diagram of part A; Figure 7 In the present invention Figure 5 is an enlarged structure schematic diagram of part B; Figure 8 is a right view sectional structure schematic diagram of a tape printing device of the present invention; Figure 9 is an assembly structure schematic diagram of the stretching component in the present invention.

[0017] In the figure: 1. Base component; 101. Base; 102. Installation box; 103. First motor; 104. Rectangular box; 2. Printing component; 201. Docking block; 202. Gear; 203. Rotating shaft; 204. Pulley; 205. Rectangular plate; 206. Cover plate; 207. Round rod; 208. Printing roller; 209. First slide rail; 210. First slider; 211. Rotating rod; 212. Ink cylinder; 213. Round plate; 214. Insertion block; 215. Vertical plate; 216. Sliding frame; 217. Second motor; 218. Cylinder; 219. Second slide rail; 220. Second slider; 3. Stretching component; 301. Rectangular opening; 302. Installation block; 303. Connecting rod; 304. Pulley; 305. Third motor; 306. Rolling cylinder; 307. Support plate; 308. Screw; 309. Adjusting plate; 310. Fourth motor. Detailed implementation mode

[0018] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but only represents the selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0019] The present invention provides as Figures 1-8 shown, a tape printing device, including a base component 1, a printing component 2 and a stretching component 3. The printing component 2 is evenly distributed on the base component 1 for roll-pressing and printing on the surface of the tape, and the stretching component 3 is arranged on the base component 1 for stretching and straightening the tape.

[0020] In addition, the printing assembly 2 includes a printing component and a replacement component. The replacement component is arranged on the printing component. The printing component includes two docking blocks 201, two gears 202, a rotating shaft 203, a first pulley 204, two rectangular plates 205, four cover plates 206, two round rods 207, two printing rollers 208, a first slide rail 209, a first slider 210, a rotating rod 211, an ink cylinder 212, a round plate 213, and three insertion blocks 214. The two docking blocks 201 are both arranged on the machine base assembly 1. The two gears 202 are respectively fixedly installed on the outer walls of one sides of the two docking blocks 201. The two gears 202 are meshed with each other. The rotating shaft 203 is fixedly installed on the outer wall of the corresponding gear 202. The first pulley 204 is fixedly sleeved on the rotating shaft 203. The two rectangular plates 205 are both arranged above the machine base assembly 1. The four cover plates 206 are respectively fixedly installed on the two rectangular plates 205 through fasteners. The two round rods 207 are respectively rotatably installed between the two rectangular plates 205 and the four cover plates 206. The two printing rollers 208 are respectively fixedly sleeved on the two round rods 207. The first slide rail 209 is fixedly installed on the outer wall of the corresponding rectangular plate 205. The first slider 210 is slidably installed in the first slide rail 209. The rotating rod 211 is rotatably installed on the first slider 210. The ink cylinder 212 is fixedly sleeved on the rotating rod 211. The round plate 213 is rotatably installed on the corresponding rectangular plate 205. The rotating rod 211 is rotatably connected with the round plate 213. The three insertion blocks 214 are respectively fixedly installed on one ends of the two round rods 207 and the rotating rod 211. More specifically, start the first motor 103. As Figure 5 shown, the first motor 103 drives the lower gear 202 to rotate. The lower gear 202 meshes with and drives the upper gear 202. The upper gear 202 rotates due to the meshing drive and drives the rotating shaft 203 to rotate. The rotating shaft 203 drives the first pulley 204 to rotate. When the two gears 202 rotate, they respectively drive the two docking blocks 201 to rotate. The two docking blocks 201 respectively drive the round rod 207 and the rotating rod 211 to rotate. The rotating rod 211 drives the ink cylinder 212 to rotate. The round rod 207 drives the printing roller 208 to rotate. When the ink cylinder 212 rotates, it applies ink to the printing roller 208. The ink is printed on the adhesive tape through the printing roller 208 for printing. Start the cylinder 218. The output shaft of the cylinder 218 retracts and pulls the rectangular plate 205 to move. The rectangular plate 205 respectively drives the round rod 207 and the rotating rod 211 to move. The round rod 207 and the rotating rod 211 drive the insertion blocks 214 to move and disengage from the docking blocks 201. Start the second motor 217. The second motor 217 drives the rectangular plate 205 to flip. As Figure 5As shown in the figure, when the rectangular plate 205 flips, it drives the printing roller 208 above to flip to the lower part, replacing the original printing roller 208 below. At this time, the printing roller 208 and the ink cylinder 212 are turned, so that the insertion block 214 on the round rod 207 and the rotating rod 211 is aligned with the docking block 201. The air cylinder 218 is started to push the rectangular plate 205 to reset for printing. During printing, the fasteners on the upper cover plate 206 and the rectangular plate 205 are removed by an external disassembly tool, and the printing roller 208 is replaced. It has the advantages of flipping and replacing when replacing a new printing pattern, without having to stop printing the tape due to disassembly and replacement, and reducing the impact on printing efficiency caused by replacing printing tools.

[0021] In addition, a transmission belt is sleeved on the first pulley 204.

[0022] In addition, the cross section of the insertion block 214 is rhombus-shaped, a rhombus groove is formed on the docking block 201, and the insertion block 214 is adapted to the rhombus groove.

[0023] As Figure 1 shown, among them, the machine base assembly 1 includes a base 101, an installation box 102, a first motor 103 and a rectangular box 104. The installation box 102 is fixedly installed on the top of the base 101. The first motor 103 is fixedly installed on the inner wall of one side of the installation box 102. The rectangular box 104 is fixedly installed on the top of the base 101. The docking block 201 is rotatably installed on the installation box 102. The rotating shaft 203 is rotatably connected to the installation box 102. The output shaft of the first motor 103 is fixedly connected to the corresponding gear 202.

[0024] In addition, the replacement assembly includes a vertical plate 215, a sliding frame 216, a second motor 217, two air cylinders 218, a second slide rail 219 and two second sliders 220. The vertical plate 215 is fixedly installed on the top of the base 101. The sliding frame 216 is slidably installed on the vertical plate 215. The second motor 217 is fixedly installed on the sliding frame 216. The output shaft of the second motor 217 is fixedly connected to the corresponding rectangular plate 205. Both of the two air cylinders 218 are fixedly installed on the outer wall of one side of the vertical plate 215. The second slide rail 219 is fixedly installed on the outer wall of one side of the corresponding rectangular plate 205. Both of the two second sliders 220 are slidably installed in the second slide rail 219. Both of the two second sliders 220 are fixedly connected to the output ends of the two air cylinders 218.

[0025] As Figure 1As shown, in some embodiments, the stretching assembly 3 includes a straightening assembly and an adjusting assembly. The straightening assembly includes four rectangular openings 301, four mounting blocks 302, two connecting rods 303, two pulleys II 304, a motor III 305, and two roller cylinders 306. The four rectangular openings 301 are all formed in the rectangular box 104. The four mounting blocks 302 are respectively slidably mounted in the four rectangular openings 301. The two connecting rods 303 are respectively rotatably mounted on the four mounting blocks 302. The two pulleys II 304 are respectively fixedly mounted on the two connecting rods 303. The motor III 305 is fixedly mounted on the outer wall of one side of the corresponding mounting block 302. The output shaft of the motor III 305 is fixedly connected to one end of the corresponding connecting rod 303. The two roller cylinders 306 are respectively fixedly sleeved on the two connecting rods 303. More specifically, when the motor III 305 is started, as Figure 3 shown, the motor III 305 drives the upper connecting rod 303 to rotate. The connecting rod 303 drives the pulley II 304 to rotate. The pulley II 304 is driven by a transmission belt, so that the lower pulley II 304 rotates. The lower pulley II 304 drives the connecting rod 303 to rotate on the mounting block 302. The two connecting rods 303 both drive the roller cylinders 306 to rotate clockwise, which has the advantages of rolling and straightening the tape to prevent the tape from wrinkling and causing subsequent printing misalignment.

[0026] In addition, a transmission belt is sleeved on the two pulleys II 304.

[0027] In some embodiments, the adjusting assembly includes two support plates 307, a bidirectional screw 308, two adjusting plates 309, and a motor IV 310. The two support plates 307 are both fixedly mounted on the outer wall of one side of the rectangular box 104. The bidirectional screw 308 is rotatably mounted on the support plates 307. The two adjusting plates 309 are both threadedly mounted on the bidirectional screw 308. The two adjusting plates 309 are respectively fixedly connected to the two mounting blocks 302. The motor IV 310 is fixedly mounted on the top of the corresponding support plate 307. The output end of the motor IV 310 is fixedly connected to the top end of the bidirectional screw 308. More specifically, when the motor IV 310 is started, the motor IV 310 drives the screw 308 to rotate clockwise. The screw 308 rotates and drives the two adjusting plates 309 to move. The two adjusting plates 309 move towards the center of the screw 308. When moving closer, they drive the mounting blocks 302 to move. The mounting blocks 302 slide in the rectangular openings 301. The mounting blocks 302 drive the connecting rods 303 and the roller cylinders 306 to move, which has the advantage of adjusting the rolling and stretching distance to adapt to tapes of different sizes and materials.

[0028] Working principle: Step 1: Adjust the spacing. Start motor four 310. Motor four 310 drives the screw rod 308 to rotate clockwise. The screw rod 308 rotates and drives the two adjusting plates 309 to move. The two adjusting plates 309 move towards the center of the screw rod 308. When moving closer, they drive the mounting block 302 to move. The mounting block 302 slides within the rectangular opening 301. The mounting block 302 drives the connecting rod 303 and the roller 306 to move, adjusting the spacing to fit tapes of different sizes and materials.

[0029] Step 2: Rotate and stretch. Start motor three 305. As Figure 3 shown, motor three 305 drives the upper connecting rod 303 to rotate. The connecting rod 303 drives the pulley two 304 to rotate. Pulley two 304 is driven by the transmission belt, causing the lower pulley two 304 to rotate. The lower pulley two 304 drives the connecting rod 303 to rotate on the mounting block 302. Both connecting rods 303 drive the roller 306 to rotate clockwise to roll and straighten the tape.

[0030] Step 3: Roll and print. Start motor one 103. As Figure 5 shown, motor one 103 drives the lower gear 202 to rotate. The lower gear 202 meshes with the upper gear 202 for transmission. The upper gear 202 rotates due to the meshing transmission and drives the rotating shaft 203 to rotate. The rotating shaft 203 drives the pulley one 204 to rotate. When the two gears 202 rotate, they respectively drive the two docking blocks 201 to rotate. The two docking blocks 201 respectively drive the round rod 207 and the rotating rod 211 to rotate. The rotating rod 211 drives the ink cylinder 212 to rotate. The round rod 207 drives the printing roller 208 to rotate. The ink cylinder 212 applies ink to the printing roller 208 during rotation, and the ink is printed on the tape through the printing roller 208 for printing.

[0031] Step 4: Flip and replace. When it is necessary to replace the printing pattern, start the cylinder 218. The output shaft of the cylinder 218 retracts and pulls the rectangular plate 205 to move. The rectangular plate 205 drives the round rod 207 and the rotating rod 211 to move respectively. The round rod 207 and the rotating rod 211 drive the insertion block 214 to move and disengage from the docking block 201. Start motor two 217. Motor two 217 drives the rectangular plate 205 to flip. As Figure 5 shown, when the rectangular plate 205 flips, it drives the upper printing roller 208 to flip to the lower position, replacing the original lower printing roller 208. At this time, turn the printing roller 208 and the ink cylinder 212 so that the insertion block 214 on the round rod 207 and the rotating rod 211 aligns with the docking block 201. Start the cylinder 218 to push the rectangular plate 205 back to its original position for printing. During printing, use an external disassembly tool to remove the fasteners on the upper cover plate 206 and the rectangular plate 205 to replace the printing roller 208.

[0032] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

[0033] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

Claims

1. A tape printing device, characterized in that: It comprises a base assembly, a printing assembly and a stretching assembly. The printing assembly is evenly distributed on the base assembly and is used for roller printing on the surface of the adhesive tape. The stretching assembly is arranged on the base assembly and is used for stretching and straightening the adhesive tape.

2. The tape printing device according to claim 1, characterized in that: The printing assembly includes a printing assembly and a replacement assembly, and the replacement assembly is arranged on the printing assembly. The printing assembly includes two docking blocks, two gears, a rotating shaft, a pulley, two rectangular plates, four cover plates, two round rods, two printing rollers, a slide rail, a slider, a rotating rod, an ink cartridge, a round plate and three insertion blocks. The two docking blocks are both arranged on the base assembly, and the two gears are respectively fixedly mounted on one side outer wall of the two docking blocks, and the two gears are meshed with each other. The rotating shaft is fixedly mounted on one side outer wall of the corresponding gear, and the pulley is fixedly sleeved on the rotating shaft. The two rectangular plates are both provided with Placed above the machine base assembly, the four cover plates are fixedly mounted on the two rectangular plates by fasteners, the two round rods are rotatably mounted between the two rectangular plates and the four cover plates, the two printing rollers are fixedly sleeved on the two round rods, the slide rail 1 is fixedly mounted on the outer wall of one side of the corresponding rectangular plate, the slider 1 is slidably mounted in the slide rail 1, the rotating rod is rotatably mounted on the slider 1, the ink cartridge is fixedly sleeved on the rotating rod, the round plate is rotatably mounted on the corresponding rectangular plate, the rotating rod is rotatably connected to the round plate, and the three insertion blocks are fixedly mounted on the two round rods and one end of the rotating rod.

3. The tape printing device according to claim 2, characterized in that: A transmission belt is sleeved on the belt pulley.

4. The tape printing device according to claim 2, characterized in that: The cross section of the insert block is in a rhombus shape, and a rhombus groove is provided on the docking block, and the insert block is matched with the rhombus groove.

5. The tape printing device according to claim 2, characterized in that: The base assembly includes a base, an installation box, a motor 1 and a rectangular box, the installation box is fixedly installed on the top of the base, the motor 1 is fixedly installed on an inner wall of one side of the installation box, the rectangular box is fixedly installed on the top of the base, the docking block is rotatably installed on the installation box, the rotating shaft is rotatably connected to the installation box, and the output shaft of the motor 1 is fixedly connected to the corresponding gear.

6. The tape printing device according to claim 2, characterized in that: The replacement assembly includes a vertical plate, a sliding frame, a second motor, two cylinders, a second slide rail and two second sliders. The vertical plate is fixedly installed on the top of the base, the sliding frame is slidably installed on the vertical plate, the second motor is fixedly installed on the sliding frame, the output shaft of the second motor is fixedly connected to the corresponding rectangular plate, the two cylinders are fixedly installed on one side outer wall of the vertical plate, the second slide rail is fixedly installed on one side outer wall of the corresponding rectangular plate, the two second sliders are slidably installed in the second slide rail, and the two second sliders are fixedly connected to the output ends of the two cylinders.

7. The tape printing device according to claim 5, characterized in that: The stretching assembly includes a straightening assembly and an adjusting assembly, and the straightening assembly includes four rectangular openings, four mounting blocks, two connecting rods, two pulley 2s, a motor 3 and two roller pressing cylinders. The four rectangular openings are all opened on the rectangular box, the four mounting blocks are respectively slidably installed in the four rectangular openings, the two connecting rods are respectively rotatably installed on the four mounting blocks, the two pulley 2s are respectively fixedly installed on the two connecting rods, the motor 3 is fixedly installed on one side outer wall of the corresponding mounting block, the output shaft of the motor 3 is fixedly connected to one end of the corresponding connecting rod, and the two roller pressing cylinders are respectively fixedly sleeved on the two connecting rods.

8. The tape printing device according to claim 7, characterized in that: The two pulleys are sleeved with transmission belts.

9. The tape printing device according to claim 7, characterized in that: The adjustment assembly includes two support plates, a bidirectional screw, two adjustment plates and a motor three. The two support plates are fixedly mounted on an outer wall of one side of the installation box. The bidirectional screw is rotatably mounted on the support plate. The two adjustment plates are threadedly mounted on the bidirectional screw. The two adjustment plates are fixedly connected to two mounting blocks respectively. The motor three is fixedly mounted on the top of the corresponding support plate, and the output end of the motor three is fixedly connected to the top end of the bidirectional screw.

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