Automatic hot stamping device for plastic products
By designing automatic thermal printing devices for plastic products, including continuous loading, automatic thermal printing and stable clamping and push-down systems, the problems of low thermal transfer efficiency, poor accuracy and low automation in the prior art are solved, and efficient and accurate thermal printing of plastic products are achieved.
Patent Information
- Application Number
- CN202411909600.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-25
AI Technical Summary
The existing thermal transfer technology has problems in plastic products with low efficiency, poor accuracy, serious material waste and low degree of automation. Especially in the thermal printing process of plastic products, the coil material is unevenly heated, the pattern is uneven, and continuous and efficient autonomous thermal printing cannot be achieved.
An automatic thermal printing device for plastic products is designed, including a base frame, a feeding mechanism, a thermal printing mechanism and a clamping device. The feeding mechanism achieves continuous feeding through the feed rack and conveyor belt. The thermal printing mechanism uses two separate motors to drive the thermal printing film rolling and the thermal printing roller to rotate. The clamping device stabilizes the plastic products through the motor-driven gear and rack system.
It realizes continuous and efficient thermal printing of plastic products, improves the efficiency and accuracy of thermal printing work, reduces material waste, and improves the degree of automation.
Smart Images
Figure CN119682379A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of thermal transfer technology, and in particular to an automatic thermal transfer device for plastic products. Background Art
[0002] Thermal transfer production usually refers to the process of cutting and pressing the prepared thermal transfer film onto the substrate. The industry originally operated it manually, but the shortcomings are obvious, low efficiency, poor precision, and multiple films are difficult to separate and transferred together, resulting in serious material waste. Plastic products are not easy to break, rust, light, and have excellent oil and strong corrosion resistance. They are mostly used for product packaging that requires heat preservation, moisture resistance, pressure resistance, and corrosion resistance. For the purpose of identification in production and sales, it is often necessary to mark the outside of the plastic barrel for classification or publicity purposes. Existing transfer technology may have problems such as uneven heating of the coil, uneven transfer pattern, and inability to continuously and efficiently perform thermal printing by itself, and the degree of automation is low. Summary of the invention
[0003] In view of the above technical problems, the technical solution adopted by the present invention is: an automatic thermal printing device for plastic products, including a base frame, characterized in that: a feeding mechanism is arranged on the base frame, the feeding mechanism includes a feed frame, the feeding mechanism is used to continuously feed products, a thermal printing mechanism is fixedly installed on the side of the feeding mechanism, the thermal printing mechanism includes a thermal printing frame fixedly installed on the base frame, the thermal printing mechanism is used to effectively perform thermal printing on plastic products, a clamping device is arranged above the feeding mechanism, a pushing mechanism is arranged in the clamping device, and the pushing mechanism is used to push the products after thermal printing to be unloaded, so as to facilitate subsequent integration and collection.
[0004] Furthermore, the feeding mechanism includes a first motor fixedly installed, a feed port is arranged at the upper end of the feed frame, a rotating shaft is rotatably installed on the movable end of the first motor, a conveyor pulley I is fixedly installed on the rotating shaft, a feed shaft I and a feed shaft II are rotatably installed inside the feed frame, a conveyor pulley II is fixedly installed on the feed shaft I, a conveyor belt is wrapped around the outside of the conveyor pulley II and the conveyor pulley I, a conveyor belt is wrapped around the outside of the feed shaft I and the feed shaft II, and a feed baffle is fixedly installed on the front end of the rotating shaft.
[0005] Furthermore, the feeding mechanism also includes a cylindrical fixing frame fixedly mounted on the base frame, a rotating cylinder is rotatably mounted on the cylindrical fixing frame, an auxiliary plate is fixedly mounted on the rotating cylinder, a groove pulley is arranged below the auxiliary plate, a second motor is fixedly mounted on the side of the cylindrical fixing frame, a motor shaft is rotatably mounted on the movable end of the second motor, a toggle disc is fixedly mounted on the motor shaft, a toggle rod is arranged below the toggle disc, and a plurality of clamping devices are arranged on the auxiliary plate.
[0006] Furthermore, the clamping device includes a clamping frame, which is fixedly mounted on an auxiliary plate, a groove is provided on the top of the clamping frame, an auxiliary frame is fixedly mounted inside the clamping frame, upper and lower slide grooves are provided inside the auxiliary frame, an upper rack and a lower rack are slidably mounted on the slide groove, a sixth motor is provided at the rear of the auxiliary frame, a clamping shaft is rotatably mounted on the movable end of the sixth motor, a rotating gear is fixedly mounted on the clamping shaft, the rotating gear is meshed with the upper rack and the lower rack, a forward gear is fixedly mounted on the front end of the clamping shaft, a clamping block I is fixedly mounted on the upper rack, and a clamping block II is fixedly mounted on the lower rack.
[0007] Furthermore, the pushing mechanism includes a gear fixing frame fixedly mounted on the clamping frame, a gear shaft is rotatably mounted on the gear fixing frame, a reverse gear is fixedly mounted on the gear shaft, the reverse gear is meshed with the forward gear, a pushing rod is fixedly mounted at the rear of the gear fixing frame, a pushing frame is fixedly mounted above the pushing rod, a connecting rod fixing block II is arranged on the pushing frame, a connecting rod fixing block I is arranged on the reverse gear, a connecting rod is fixedly mounted on the connecting rod fixing block I, and the other end of the connecting rod is fixedly mounted on the connecting rod fixing block II.
[0008] Furthermore, the thermal printing mechanism includes a third motor fixedly installed on the top of the thermal printing frame, a screw is rotatably installed on the movable end of the third motor, a roller fixing frame is rotatably installed on the screw, a fourth motor is fixedly installed on the thermal printing frame, a driving shaft is rotatably installed on the movable end of the fourth motor, a unwinding shaft is rotatably installed on the other end of the thermal printing frame, and a plurality of auxiliary shafts are rotatably installed on the thermal printing frame.
[0009] Furthermore, a fifth motor is fixedly mounted on the roller fixing frame, a rotating pulley I is rotatably mounted on the front end of the fifth motor, a thermal printing shaft is rotatably mounted inside the roller fixing frame, a thermal printing roller is fixedly mounted on the thermal printing shaft, a rotating pulley II is fixedly mounted behind the thermal printing roller, and a rotating belt is wound around the outside of the rotating pulley II and the rotating pulley I.
[0010] Compared with the prior art, the present invention has the following beneficial effects: (1) The clamping device provided in the present invention can flexibly adjust the relative clamping of the plastic product in the early stage to ensure the stability of the subsequent hot printing, and can be applied to various types of plastic products, with a wide range of applications; in the later stage, after the hot printing of the plastic product is completed, the sixth motor can be reversed to easily push the plastic product to the blanking rack for easy collection; (2) The feeding mechanism provided in the present invention can realize continuous feeding through the intermittent rotation provided at the bottom, and problems such as plastic product accumulation will not occur during feeding; (3) The hot printing mechanism provided in the present invention uses two separate motors, one to drive the hot printing film to automatically rewind, and the other to control the rotation of the hot printing roller, so that the hot printing work can be carried out when the plastic product is rotated to the appropriate position, thereby improving the efficiency of the hot printing work. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0012] Figure 2 The structure diagram of the feeding mechanism of the present invention is shown in FIG. Figure 1 .
[0013] Figure 3 for Figure 2 A partial enlarged view of middle A.
[0014] Figure 4 It is a schematic diagram of the internal structure of the feeding mechanism of the present invention.
[0015] Figure 5 The structure of the feeding mechanism of the present invention is shown in FIG. Figure 2 .
[0016] Figure 6 The heat printing mechanism structure of the present invention is shown in FIG. Figure 1 .
[0017] Figure 7 The heat printing mechanism structure of the present invention is shown in FIG. Figure 2 .
[0018] Figure 8 It is a schematic diagram of the structure of the clamping device of the present invention.
[0019] Fig. 9 Schematic diagram of the internal structure of the clamping device of the present invention Figure 1 .
[0020] Fig.10 Schematic diagram of the internal structure of the clamping device of the present invention Figure 2 .
[0021] Fig.11 It is a schematic diagram of the structure of the material pushing mechanism of the present invention.
[0022] Figure numerals: 1-base frame; 201-feeding frame; 202-feeding port; 203-first motor; 204-rotating shaft; 205-conveyor pulley Ⅰ; 206-conveyor pulley Ⅱ; 207-feeding shaft Ⅰ; 208-conveyor belt; 209-feeding baffle; 210-feeding shaft Ⅱ; 211-conveyor belt; 212-cylinder fixing frame; 213-second motor; 214-motor shaft; 215-rotating cylinder; 216-auxiliary plate; 217-swivel disc; 218-groove wheel disc; 219-swivel rod; 301-hot printing frame; 302-third motor; 303-screw; 304-fourth motor; 305-driving shaft; 306-auxiliary shaft; 307-roller fixing frame; 308 -fifth motor; 309-rotating pulley Ⅰ; 310-rotating belt; 311-hot printing shaft; 312-hot printing roller; 313-rotating pulley Ⅱ; 314-unwinding shaft; 401-clamping frame; 402-auxiliary frame; 403-groove; 404-slide; 405-upper rack; 406-lower rack; 407-rotating gear; 408-clamping shaft; 409-forward gear; 410-reverse gear; 411-gear fixing frame; 412-sixth motor; 413-pushing frame; 414-clamping block Ⅰ; 415-connecting rod fixing block Ⅰ; 416-connecting rod; 417-connecting rod fixing block Ⅱ; 418-pushing rod; 419-gear shaft; 420-blank table; 421-clamping block Ⅱ. DETAILED DESCRIPTION
[0023] like Figure 1-Figure 11 As shown, an automatic thermal printing device for plastic products comprises a base frame 1, on which a feeding mechanism is arranged, the feeding mechanism comprises a feed frame 201, the feeding mechanism is used for continuously feeding products, a thermal printing mechanism is fixedly installed on the side of the feeding mechanism, the thermal printing mechanism comprises a thermal printing frame 301 fixedly installed on the base frame 1, the thermal printing mechanism is used for effectively thermally printing plastic products, a clamping device is arranged above the feeding mechanism, a pushing mechanism is arranged in the clamping device, the pushing mechanism is used for pushing the products after thermal printing to be discharged, so as to facilitate subsequent integration and collection.
[0024] The plastic products are put in order, and the feeding mechanism is started during the putting, and the plastic products are put in order on the clamping device. With the intermittent rotation below, the plastic products can be continuously and automatically thermally printed. After the thermal printing is completed, the motor is reversed, and the plastic products are easily pushed out through the pushing mechanism to complete the unloading.
[0025] like Figure 1-Figure 5As shown, the feeding mechanism includes a first motor 203 fixedly installed, a feed port 202 is arranged on the upper end of the feed frame 201, a rotating shaft 204 is rotatably installed on the movable end of the first motor 203, a conveyor pulley Ⅰ205 is fixedly installed on the rotating shaft 204, a feed shaft Ⅰ207 and a feed shaft Ⅱ210 are rotatably installed inside the feed frame 201, a conveyor pulley Ⅱ206 is fixedly installed on the feed shaft Ⅰ207, a conveyor belt 208 is wound around the outside of the conveyor pulley Ⅱ206 and the conveyor pulley Ⅰ205, a conveyor belt 211 is wound around the outside of the feed shaft Ⅰ207 and the feed shaft Ⅱ210, and a feed baffle 209 is fixedly installed on the front end of the rotating shaft 204.
[0026] like Figure 1-Figure 5 As shown, the feeding mechanism also includes a cylindrical fixing frame 212 fixedly mounted on the base frame 1, a rotating cylinder 215 is rotatably mounted on the cylindrical fixing frame 212, an auxiliary plate 216 is fixedly mounted on the rotating cylinder 215, a groove pulley 218 is arranged below the auxiliary plate 216, a second motor 213 is fixedly mounted on the side of the cylindrical fixing frame 212, a motor shaft 214 is rotatably mounted on the movable end of the second motor 213, a toggle disc 217 is fixedly mounted on the motor shaft 214, a toggle rod 219 is arranged below the toggle disc 217, and a plurality of clamping devices are arranged on the auxiliary plate 216.
[0027] The first motor 203 is started, and the first motor 203 drives the rotating shaft 204 to rotate. The rotation of the first motor 203 drives the conveyor pulley Ⅰ205 to rotate at the same time. The conveyor pulley Ⅰ205 drives the conveyor pulley Ⅱ206 to rotate through the conveyor belt 208. The rotation of the conveyor pulley Ⅱ206 drives the feed shaft Ⅰ207 to rotate. The feed shaft Ⅰ207 drives the feed shaft Ⅱ210 to rotate through the conveyor belt 211, thereby achieving orderly loading. While the plastic products are being loaded, the second motor 213 is started, and the rotation of the second motor 213 drives the toggle rod 219 to rotate. The toggle rod 219 drives 218 to rotate intermittently, thereby driving the rotating cylinder 215 to rotate. The rotation of the rotating cylinder 215 drives the auxiliary plate 216 to rotate, thereby completing intermittent rotation.
[0028] like Figure 1-Figure 11As shown, the clamping device includes a clamping frame 401, which is fixedly mounted on the auxiliary plate 216, a groove 403 is provided at the top of the clamping frame 401, an auxiliary frame 402 is fixedly mounted inside the clamping frame 401, and upper and lower slide grooves 404 are provided inside the auxiliary frame 402, an upper rack 405 and a lower rack 406 are slidably mounted on the slide groove 404, a sixth motor 412 is provided at the rear of the auxiliary frame 402, a clamping shaft 408 is rotatably mounted on the movable end of the sixth motor 412, a rotating gear 407 is fixedly mounted on the clamping shaft 408, the rotating gear 407 is meshed with the upper rack 405 and the lower rack 406, a forward gear 409 is fixedly mounted on the front end of the clamping shaft 408, a clamping block I 414 is fixedly mounted on the upper rack 405, and a clamping block II 421 is fixedly mounted on the lower rack 406.
[0029] like Figure 8-Figure 11 As shown, the pushing mechanism includes a gear fixing frame 411 fixedly mounted on the clamping frame 401, a gear shaft 419 is rotatably mounted on the gear fixing frame 411, a reverse gear 410 is fixedly mounted on the gear shaft 419, the reverse gear 410 is meshed with the forward gear 409, a pushing rod 418 is fixedly mounted at the rear of the gear fixing frame 411, a pushing frame 413 is fixedly mounted above the pushing rod 418, a connecting rod fixing block II 417 is arranged on the pushing frame 413, a connecting rod fixing block I 415 is arranged on the reverse gear 410, a connecting rod 416 is fixedly mounted on the connecting rod fixing block I 415, and the other end of the connecting rod 416 is fixedly mounted on the connecting rod fixing block II 417.
[0030] When the plastic products fall onto the clamping frame 401 in an orderly manner, the sixth motor 412 is started, and the sixth motor 412 drives the rotating gear 407 to rotate, and the rotating gear 407 rotates to drive the upper rack 405 and the lower rack 406 to move relative to each other, thereby driving the clamping block I 414 and the clamping block II 421 to clamp the plastic products relative to each other, thereby ensuring the stability during hot printing; After hot printing is completed, when the auxiliary plate 216 rotates to the front of the blanking table 420, the sixth motor 412 then reverses, so that the clamping block I 414 and the clamping block II 421 slide back to back, and at the same time the forward gear 409 reverses, driving the reverse gear 410 to rotate, thereby driving the pushing rack 413 to push upward, thereby pushing the plastic products placed on the clamping rack 401 upward and ejecting them to slide into the blanking table 420 for subsequent collection.
[0031] like Figure 1-Figure 7As shown, the thermal printing mechanism includes a third motor 302 fixedly mounted on the top of the thermal printing frame 301, a lead screw 303 is rotatably mounted on the movable end of the third motor 302, a roller fixing frame 307 is rotatably mounted on the lead screw 303, a driving shaft 304 is fixedly mounted on the thermal printing frame 301, a driving shaft 305 is rotatably mounted on the movable end of the fourth motor 304, a reeling shaft 314 is rotatably mounted on the other end of the thermal printing frame 301, and a plurality of auxiliary shafts 306 are rotatably mounted on the thermal printing frame 301.
[0032] like Figure 6 , Figure 7 As shown, a fifth motor 308 is fixedly mounted on the roller fixing frame 307, a rotating pulley Ⅰ309 is rotatably mounted on the front end of the fifth motor 308, a thermal printing shaft 311 is rotatably mounted inside the roller fixing frame 307, a thermal printing roller 312 is fixedly mounted on the thermal printing shaft 311, a rotating pulley Ⅱ313 is fixedly mounted behind the thermal printing roller 312, and a rotating belt 310 is wound around the outside of the rotating pulley Ⅱ313 and the rotating pulley Ⅰ309.
[0033] When the auxiliary plate 216 rotates to the bottom of the thermal printing mechanism, the starting end of the membrane cloth is placed on the active shaft 305, and the active shaft 304 is started. The active shaft 304 drives the active shaft 305 to rotate, and the rotation of the active shaft 305 drives the membrane cloth to rotate actively. At the same time, the fifth motor 308 drives the rotating pulley Ⅰ309 to rotate, and the rotating pulley Ⅰ309 drives the rotating pulley Ⅱ313 to rotate through the rotating belt 310, thereby realizing the rotation of the thermal printing shaft 311, and the rotation of the thermal printing shaft 311 drives the thermal printing roller 312 to rotate, thereby completing the thermal printing work.
[0034] The working principle of the automatic hot stamping device for plastic products disclosed in the present invention is as follows: the first motor 203 is started, the first motor 203 drives the rotating shaft 204 to rotate, the first motor 203 rotates and drives the conveyor belt wheel I 205 to rotate, the conveyor belt wheel I 205 drives the conveyor belt wheel II 206 to rotate through the conveyor belt 208, the conveyor belt wheel II 206 rotates and drives the feed rotating shaft I 207 to rotate, the feed rotating shaft I 207 drives the feed rotating shaft II 210 to rotate through the conveyor belt 211, so as to achieve orderly loading, and the plastic products are processed. The second motor 213 is started at the same time as the material is loaded. The second motor 213 rotates to drive the toggle rod 219 to rotate. The toggle rod 219 drives the toggle 218 to rotate intermittently, thereby driving the rotating cylinder 215 to rotate. The rotating cylinder 215 rotates to drive the auxiliary plate 216 to rotate, thereby completing the intermittent rotation. When the plastic products fall onto the clamping frame 401 in an orderly manner, the sixth motor 412 is started. The sixth motor 412 drives the rotating gear 407 to rotate. The rotating gear 407 rotates to drive the upper rack 405 and the lower rack 406 to move relative to each other. The clamping block I 414 and the clamping block II 421 are driven to clamp the plastic product relatively. Then, when the auxiliary plate 216 rotates to the bottom of the thermal printing mechanism, the beginning end of the membrane cloth is placed on the active shaft 305, the active shaft 304 is started, the active shaft 304 drives the active shaft 305 to rotate, and the active shaft 305 rotates to drive the membrane cloth to rotate actively. At the same time, the fifth motor 308 drives the rotating pulley I 309 to rotate, and the rotating pulley I 309 drives the rotating pulley II 313 to rotate through the rotating belt 310, thereby realizing the thermal printing shaft 311 rotates, and the hot printing shaft 311 rotates to drive the hot printing roller 312 to rotate, thereby completing the hot printing work. After hot printing, when the auxiliary plate 216 rotates to the front of the blanking table 420, the sixth motor 412 is then reversed, so that the clamping block I 414 and the clamping block II 421 slide back to back, and at the same time the forward gear 409 is reversed, driving the reverse gear 410 to rotate, thereby driving the push rack 413 to push upward, so that the plastic products placed on the clamping rack 401 are pushed upward and ejected to slide into the blanking table 420 for subsequent collection.
[0035] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An automatic thermal printing device for plastic products, comprising a base frame (1), characterized in that: The base frame (1) is provided with a feeding mechanism, the feeding mechanism comprising a feeding frame (201), the feeding mechanism is used to continuously feed products, a thermal printing mechanism is fixedly mounted on the side of the feeding mechanism, the thermal printing mechanism comprises a thermal printing frame (301) fixedly mounted on the base frame (1), the thermal printing mechanism is used to effectively perform thermal printing on plastic products, a clamping device is arranged above the feeding mechanism, a pushing mechanism is arranged in the clamping device, the pushing mechanism is used to push the products after thermal printing to be discharged, so as to facilitate subsequent integration and collection.
2. The automatic thermal printing device for plastic products according to claim 1, characterized in that: The feeding mechanism comprises a first motor (203) fixedly mounted thereon; a feeding port (202) is arranged at the upper end of the feeding frame (201); a rotating shaft (204) is rotatably mounted on the movable end of the first motor (203); a conveyor pulley I (205) is fixedly mounted on the rotating shaft (204); a feeding rotating shaft I (207) and a feeding rotating shaft II (210) are rotatably mounted inside the feeding frame (201); a conveyor pulley II (206) is fixedly mounted on the feeding rotating shaft I (207); a conveyor belt (208) is wound around the outside of the conveyor pulley II (206) and the conveyor pulley I (205); a conveyor belt (211) is wound around the outside of the feeding rotating shaft I (207) and the feeding rotating shaft II (210); and a feeding baffle (209) is fixedly mounted at the front end of the rotating shaft (204).
3. The automatic thermal printing device for plastic products according to claim 2, characterized in that: The feeding mechanism further comprises a cylindrical fixing frame (212) fixedly mounted on the base frame (1); a rotating cylinder (215) is rotatably mounted on the cylindrical fixing frame (212); an auxiliary plate (216) is fixedly mounted on the rotating cylinder (215); a groove wheel (218) is arranged below the auxiliary plate (216); a second motor (213) is fixedly mounted on the side of the cylindrical fixing frame (212); a motor shaft (214) is rotatably mounted on the movable end of the second motor (213); a toggle disc (217) is fixedly mounted on the motor shaft (214); a toggle rod (219) is arranged below the toggle disc (217); and a plurality of clamping devices are arranged on the auxiliary plate (216).
4. The automatic thermal printing device for plastic products according to claim 1, characterized in that: The clamping device comprises a clamping frame (401), the clamping frame (401) is fixedly mounted on the auxiliary plate (216), a groove (403) is arranged at the top of the clamping frame (401), an auxiliary frame (402) is fixedly mounted inside the clamping frame (401), an upper and lower sliding grooves (404) are arranged inside the auxiliary frame (402), an upper rack (405) and a lower rack (406) are slidably mounted on the sliding grooves (404), and a sixth motor (403) is arranged at the rear of the auxiliary frame (402). 12), a clamping shaft (408) is rotatably mounted on the movable end of the sixth motor (412), a rotating gear (407) is fixedly mounted on the clamping shaft (408), the rotating gear (407) is meshed with the upper rack (405) and the lower rack (406), a forward gear (409) is fixedly mounted on the front end of the clamping shaft (408), a clamping block I (414) is fixedly mounted on the upper rack (405), and a clamping block II (421) is fixedly mounted on the lower rack (406).
5. The automatic thermal printing device for plastic products according to claim 4, characterized in that: The pushing mechanism comprises a gear fixing frame (411) fixedly mounted on the clamping frame (401), a gear shaft (419) rotatably mounted on the gear fixing frame (411), a reverse gear (410) fixedly mounted on the gear shaft (419), the reverse gear (410) meshing with the forward gear (409), a pushing rod (418) fixedly mounted at the rear of the gear fixing frame (411), a material pushing frame (413) fixedly mounted above the pushing rod (418), a connecting rod fixing block II (417) arranged on the material pushing frame (413), a connecting rod fixing block I (415) arranged on the reverse gear (410), a connecting rod (416) fixedly mounted on the connecting rod fixing block I (415), and the other end of the connecting rod (416) fixedly mounted on the connecting rod fixing block II (417).
6. The automatic thermal printing device for plastic products according to claim 1, characterized in that: The thermal printing mechanism comprises a third motor (302) fixedly mounted on the top of the thermal printing frame (301); a lead screw (303) is rotatably mounted on the movable end of the third motor (302); a roller fixing frame (307) is rotatably mounted on the lead screw (303); a fourth motor (304) is fixedly mounted on the thermal printing frame (301); a driving shaft (305) is rotatably mounted on the movable end of the fourth motor (304); a reeling shaft (314) is rotatably mounted on the other end of the thermal printing frame (301); and a plurality of auxiliary shafts (306) are rotatably mounted on the thermal printing frame (301).
7. The automatic thermal printing device for plastic products according to claim 6, characterized in that: A fifth motor (308) is fixedly mounted on the roller fixing frame (307), a rotating pulley I (309) is rotatably mounted on the front end of the fifth motor (308), a thermal printing shaft (311) is rotatably mounted inside the roller fixing frame (307), a thermal printing roller (312) is fixedly mounted on the thermal printing shaft (311), a rotating pulley II (313) is fixedly mounted behind the thermal printing roller (312), and a rotating belt (310) is wound around the outside of the rotating pulley II (313) and the rotating pulley I (309).