Release film feeding structure of 3D printer

Abstract

The release film feeding structure of the 3D printer comprises a printer body and a feeding mechanism, a bottom plate is arranged on the printer body, a first sliding groove and a second sliding groove are formed in the printer body, the feeding mechanism is used for replacing release films on the bottom plate, and the feeding mechanism comprises a plurality of abutting plates, a plurality of pressing plates, a release film roll and a driving assembly; the multiple abutting plates are slidably connected into the first sliding grooves correspondingly, the multiple pressing plates are slidably connected into the second sliding grooves correspondingly, the release film roll is rotationally connected to the printer body, and the driving assembly is used for driving the abutting plates and the pressing plates to slide at the same time. The abutting plate and the pressing plate abut against the two sides of the release film in the thickness direction at the same time to clamp the release film on the release film roll. When the release film needs to be replaced, the driving assembly only needs to drive the multiple abutting plates and the multiple pressing plates to move at the same time, the release film on the release film roll is moved to the bottom plate and adsorbed to the bottom plate, and replacement of the release film is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of 3D printers, and particularly to a release film feeding structure for a 3D printer. Background Art

[0002] A release film is a thin film used to protect the printed part and facilitate separation during 3D printing. It is installed between the printing base plate and the resin liquid, playing the role of protecting the printing base plate and separating the printed part. It can effectively protect the printed part and the printing base plate, and can effectively promote the separation of the printed part, improving the printing success rate. Once the printing is completed, the release film can be easily separated, and the printed part can also be easily removed.

[0003] The utility model with the application number CN202123252915.6 discloses a release film pre-pressuring device for a 3D printer, including a base plate and a clamping unit; the clamping unit includes a fixed frame, a threaded lead screw, a support plate, a tension sensor, a lower clamping plate, a tension sensor, an upper clamping plate, a fixed frame and a sliding mechanism;

[0004] In the printer in the above technical solution, through the provided clamping unit, when pre-pressuring the release film, the two fixed frames are used to clamp the release film to cut off the redundant edges of the release film, but the process is too complex and not convenient for the replacement of the release film. Summary of the Utility Model

[0005] In order to facilitate the replacement of the release film, the present application provides a release film feeding structure for a 3D printer.

[0006] The release film feeding structure for a 3D printer provided by the present application adopts the following technical solution:

[0007] A release film feeding structure for a 3D printer includes a printer main body and a feeding mechanism. A base plate is provided on the printer main body. The printer main body is respectively provided with a first sliding groove and a second sliding groove. The feeding mechanism is used for replacing the release film on the base plate. The feeding mechanism includes a plurality of abutting plates, a plurality of pressing plates, a release film roll and a driving component. The plurality of abutting plates correspond to the plurality of pressing plates. The plurality of abutting plates are respectively slidably connected in the first sliding groove, and the plurality of pressing plates are respectively slidably connected in the second sliding groove. The release film roll is rotatably connected to the printer main body. The driving component is used to simultaneously drive the sliding of the plurality of abutting plates and the plurality of pressing plates. When the abutting plate slides to the side of the base plate, the abutting plate and the pressing plate simultaneously abut on both sides in the thickness direction of the release film to clamp the release film on the release film roll.

[0008] By adopting the above technical solution, when the abutting plate moves above the bottom plate, the abutting plate and the pressing plate simultaneously clamp the release film, causing the release film to be adsorbed on the bottom plate. When it is necessary to replace the release film, only the driving assembly needs to be used to drive a plurality of abutting plates and a plurality of pressing plates to move simultaneously, move the release film on the release film roll to the bottom plate, and adsorb it on the bottom plate, facilitating the replacement of the release film.

[0009] Preferably, a rotating shaft is rotatably connected to the printer main body, and a plurality of spring clips are provided on the rotating shaft. The plurality of spring clips are evenly distributed along the circumferential direction of the rotating shaft. The release film roll is coaxially sleeved on the rotating shaft. When the release film roll is sleeved on the rotating shaft, the plurality of spring clips respectively abut against the inner wall of the release film roll.

[0010] By adopting the above technical solution, the position of the release film roll on the rotating shaft is limited by the spring clips, reducing the possibility that the position of the release film roll changes during the rotation of the rotating shaft, resulting in unevenness or deviation of the position of the release film laid on the bottom plate.

[0011] Preferably, scraping rods are respectively provided on the plurality of abutting plates. When the abutting plate slides above the bottom plate, the scraping rod abuts against the bottom plate.

[0012] By adopting the above technical solution, during the movement of the abutting plate, the scraping rod abuts against the bottom plate, which can scrape the surface of the bottom plate, reducing the possibility of dust on the surface of the bottom plate, and thus reducing the possibility of air bubbles when the release film is adsorbed on the bottom plate.

[0013] Preferably, anti-slip convex blocks are provided on the side surfaces of the plurality of abutting plates close to the corresponding pressing plates, and anti-slip grooves that can cooperate with the anti-slip convex blocks are provided on the side surfaces of the plurality of pressing plates close to the corresponding abutting plates. When the abutting plate and the corresponding pressing plate clamp the release film, the anti-slip convex block cooperates with the anti-slip groove.

[0014] By adopting the above technical solution, the contact area between the release film and the abutting plate and the pressing block is increased, reducing the possibility of the release film falling off during the process of the abutting plate and the pressing block clamping the release film.

[0015] Preferably, the driving assembly includes a first transmission belt, a second transmission belt and a driving source. The first transmission belt is drivingly connected in the first chute, and a plurality of abutting plates are respectively fixedly connected to the first transmission belt. The second transmission belt is drivingly connected in the second chute, and a plurality of pressing plates are respectively fixedly connected to the second transmission belt. The driving source is used to drive the first transmission belt and the second transmission belt to drive simultaneously.

[0016] By adopting the above technical solution, the driving source drives the first conveyor belt and the second conveyor belt to transmit simultaneously, so that a plurality of abutting plates fixedly connected to the first conveyor belt slide along the first chute, and a plurality of pressing plates fixedly connected to the second conveyor belt slide along the second chute.

[0017] Preferably, the driving source includes a plurality of first synchronous belt pulleys, a plurality of second synchronous belt pulleys and a motor. The plurality of first synchronous belt pulleys are respectively rotatably connected to the printer main body. The first conveyor belt is simultaneously meshed and connected with the plurality of first synchronous belt pulleys. The plurality of second synchronous belt pulleys are respectively rotatably connected to the printer main body. The second conveyor belt is simultaneously meshed and connected with the plurality of second synchronous belt pulleys. The motor is fixedly connected to the printer main body. One end of the output shaft of the motor is coaxially and fixedly connected with an idler pulley. The idler pulley is simultaneously meshed and connected with any one of the first synchronous belt pulleys and any one of the second synchronous belt pulleys.

[0018] By adopting the above technical solution, the motor drives the idler pulley to rotate. Through the meshing connection between the idler pulley and the first synchronous belt pulley and the second synchronous belt, the first synchronous belt pulley and the second synchronous belt pulley rotate. Through the meshing connection between the first synchronous belt pulley and the first conveyor belt and the meshing connection between the second synchronous belt pulley and the second conveyor belt, the first conveyor belt and the second conveyor belt are driven together.

[0019] The technical effects of the present utility model are mainly reflected in the following aspects:

[0020] 1. By providing a feeding mechanism in the present utility model, when the abutting plate moves above the bottom plate, the abutting plate and the pressing plate simultaneously clamp the release film, so that the release film is adsorbed on the bottom plate. When the release film needs to be replaced, only the driving component is used to drive the plurality of abutting plates and the plurality of pressing plates to move simultaneously, move the release film on the release film roll to the bottom plate, and adsorb it on the bottom plate, which is convenient for replacing the release film;

[0021] 2. By providing a rotating shaft and a spring clip in the present utility model, the position of the release film roll on the rotating shaft is limited by the spring clip, reducing the possibility that the position of the release film roll changes during the rotation of the rotating shaft, resulting in unevenness or deviation of the position of the release film laid on the bottom plate;

[0022] 3. By providing a scraping rod in the present utility model, during the movement of the abutting plate, the scraping rod abuts on the bottom plate, and the surface of the bottom plate can be scraped, reducing the possibility of dust on the surface of the bottom plate, thereby reducing the possibility of air bubbles when the release film is adsorbed on the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 is a schematic diagram of the feeding structure of an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the rotating shaft structure of an embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of the driving component structure of an embodiment of the present application.

[0027] Figure 5 It is along Figure 4 The enlarged view at position A in

[0028] Figure 6 It is along Figure 4 The enlarged view at position B in

[0029] Explanation of reference numerals: 1. Printer main body; 11. Bottom plate; 12. First chute; 13. Second chute; 14. Rotating shaft; 141. Spring card; 2. Feeding mechanism; 21. Abuttment plate; 211. Anti-slip convex block; 212. Scraping rod; 22. Pressing plate; 221. Anti-slip groove; 23. Release film roll; 24. Driving component; 241. First transmission belt; 242. Second transmission belt; 243. Driving source; 2431. First synchronous pulley; 2432. Second synchronous pulley; 2433. Motor; 2434. Idler pulley. Detailed implementation manners

[0030] The following further elaborates on the present application in conjunction with the attached Figures 1-6 to make the technical solution of the present application easier to understand and master.

[0031] An embodiment of the present application discloses a release film feeding structure for a 3D printer.

[0032] Referring to Figures 1-5 , a release film feeding structure for a 3D printer in this embodiment includes a printer main body 1 and a feeding mechanism 2. A bottom plate 11 is fixedly connected to the printer main body 1. The printer main body 1 is respectively provided with two first chutes 12 and two second chutes 13. The feeding mechanism 2 is used for replacing the release film on the bottom plate 11. The feeding mechanism 2 includes two abutment plates 21, two pressing plates 22, a release film roll 23, and a driving component 24. The two abutment plates 21 respectively correspond to the two pressing plates 22. The two ends of the two abutment plates 21 in the length direction are respectively slidably connected in the two first chutes 12. The two ends of the two pressing plates 22 in the length direction are respectively slidably connected in the two second chutes 13. The release film roll 23 is rotatably connected to the printer main body 1. The driving component 24 is used to simultaneously drive the sliding of the two abutment plates 21 and the two pressing plates 22. When the abutment plates 21 and the pressing plates 22 slide to the side of the bottom plate 11, the abutment plates 21 and the pressing plates 22 simultaneously abut on both sides in the thickness direction of the release film to clamp the release film. When the abutment plates 21 and the pressing plates 22 slide to the upper and lower sides of the bottom plate 11, the abutment plates 21 and the pressing plates 22 are separated.

[0033] Referring to Figures 1-5 , when the abutting plate 21 moves above the bottom plate 11, the abutting plate 21 and the pressing plate 22 clamp the release film at the same time, so that the release film is adsorbed on the bottom plate 11. When the release film needs to be replaced, only the driving assembly 24 is required to drive a plurality of abutting plates 21 and a plurality of pressing plates 22 to move at the same time, move the release film on the release film roll 23 to the bottom plate 11, and adsorb it on the bottom plate 11, which is convenient for the replacement of the release film. When the release film needs to be replaced, only the old release film needs to be cut off, and then the new release film on the release film roll 23 can be replaced through the feeding mechanism 2.

[0034] Referring to Figures 1-3 , a rotating shaft 14 is rotatably connected to the printer main body 1, and a plurality of spring clips 141 are fixedly connected to the rotating shaft 14. The plurality of spring clips 141 are evenly distributed along the circumferential direction of the rotating shaft 14. The release film roll 23 is coaxially sleeved on the rotating shaft 14. When the release film roll 23 is sleeved on the rotating shaft 14, the plurality of spring clips 141 are deformed and respectively abut against the inner wall of the release film roll 23. The position of the release film roll 23 on the rotating shaft 14 is limited by the spring clip 141, reducing the possibility that the position of the release film roll 23 changes during the rotation of the rotating shaft 14, resulting in the unevenness or deviation of the position of the release film laid on the bottom plate 11.

[0035] Referring to Figures 1-5 , scraping rods 212 are respectively fixedly connected to the two abutting plates 21. When the abutting plate 21 slides above the bottom plate 11, the scraping rod 212 abuts against the bottom plate 11. During the movement of the abutting plate 21, the scraping rod 212 abuts against the bottom plate 11, which can scrape the surface of the bottom plate 11, reducing the possibility of dust on the surface of the bottom plate 11, and thus reducing the possibility of air bubbles when the release film is adsorbed on the bottom plate 11.

[0036] Referring to Figures 1-5 , anti-slip protrusions 211 are fixedly connected to the side surfaces of the two abutting plates 21 close to the corresponding pressing plates 22, and anti-slip grooves 221 that can cooperate with the anti-slip protrusions 211 are formed on the side surfaces of the two pressing plates 22 close to the corresponding abutting plates 21. When the abutting plate 21 and the corresponding pressing plate 22 clamp the release film, the anti-slip protrusions 211 cooperate with the anti-slip grooves 221. The contact area between the release film and the abutting plate 21 and the pressing block is increased, reducing the possibility of the release film falling off during the process of the abutting plate 21 and the pressing block clamping the release film.

[0037] Referring to Figures 1-6, the driving assembly 24 includes two first conveyor belts 241, two second conveyor belts 242 and a driving source 243. The two first conveyor belts 241 are respectively drivingly connected in the two first sliding grooves 12. The two ends of the two abutting plates 21 in the length direction are respectively fixedly connected to the two first conveyor belts 241. The two second conveyor belts 242 are respectively drivingly connected in the two second sliding grooves 13. The two ends of the two pressing plates 22 in the length direction are respectively fixedly connected to the two second conveyor belts 242. The driving source 243 is used to drive the transmission of the first conveyor belt 241 and the second conveyor belt 242 simultaneously.

[0038] Referring to Figures 1-6 , the driving source 243 includes a plurality of first synchronous belt pulleys 2431, a plurality of second synchronous belt pulleys 2432 and a motor 2433. The plurality of first synchronous belt pulleys 2431 are respectively rotatably connected to the printer main body 1. The first conveyor belt 241 is simultaneously meshingly connected to the plurality of first synchronous belt pulleys 2431. The plurality of second synchronous belt pulleys 2432 are respectively rotatably connected to the printer main body 1. The second conveyor belt 242 is simultaneously meshingly connected to the plurality of second synchronous belt pulleys 2432. The motor 2433 is fixedly connected to the printer main body 1. One end of the output shaft of the motor 2433 is coaxially and fixedly connected with an idler pulley 2434. The idler pulley 2434 is simultaneously meshingly connected to any one of the first synchronous belt pulleys 2431 and any one of the second synchronous belt pulleys.

[0039] Referring to Figures 1-6 , the motor 2433 is used to drive the idler pulley 2434 to rotate. Through the meshing connection between the idler pulley 2434 and the first synchronous belt pulley 2431 and the second synchronous belt, the first synchronous belt pulley 2431 and the second synchronous belt pulley 2432 are rotated. Through the meshing connection between the first synchronous belt pulley 2431 and the first conveyor belt and the meshing connection between the second synchronous belt pulley 2432 and the second conveyor belt, the first synchronous belt and the second synchronous belt are driven together. By driving the first conveyor belt 241 and the second conveyor belt 242 to transmit simultaneously through the driving source 243, a plurality of abutting plates 21 fixedly connected to the first conveyor belt 241 slide along the first sliding groove 12, and a plurality of pressing plates 22 fixedly connected to the second conveyor belt 242 slide along the second sliding groove 13.

[0040] Of course, the above are only typical examples of the present application. In addition, the present application can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A release film feeding structure for a 3D printer, characterized in that: The printer comprises a printer body (1) and a feeding mechanism (2), wherein the printer body (1) is provided with a bottom plate (11), the printer body (1) is respectively provided with a first slide groove (12) and a second slide groove (13), the feeding mechanism (2) is used for replacing the release film on the bottom plate (11), the feeding mechanism (2) comprises a plurality of abutment plates (21), a plurality of pressure plates (22), a release film roll (23) and a driving component (24), a plurality of the abutment plates (21) corresponding to a plurality of pressure plates (22), a plurality of the abutment plates (21) corresponding to a plurality of The plurality of pressure plates (22) are respectively slidably connected in the first slide groove (12), and the plurality of pressure plates (22) are respectively slidably connected in the second slide groove (13). The release film roll (23) is rotationally connected to the printer body (1), and the driving component (24) is used to simultaneously drive the sliding of the plurality of abutment plates (21) and the plurality of pressure plates (22). When the abutment plates (21) slide to the side of the bottom plate (11), the abutment plates (21) and the pressure plates (22) simultaneously abut on both sides of the release film in the thickness direction to clamp the release film on the release film roll (23).

2. The release film feeding structure of a 3D printer according to claim 1, characterized in that: The printer body (1) is rotatably connected to a rotating shaft (14), and the rotating shaft (14) is provided with a plurality of spring clips (141). The plurality of spring clips (141) are evenly distributed along the circumference of the rotating shaft (14). The release film roll (23) is coaxially sleeved on the rotating shaft (14). When the release film roll (23) is sleeved on the rotating shaft (14), the plurality of spring clips (141) respectively abut against the inner wall of the release film roll (23).

3. The release film feeding structure of a 3D printer according to claim 1, characterized in that: A plurality of the abutment plates (21) are respectively provided with a scraper rod (212); when the abutment plates (21) slide to above the bottom plate (11), the scraper rod (212) abuts against the bottom plate (11).

4. The release film feeding structure of a 3D printer according to claim 1, characterized in that: A plurality of the abutment plates (21) are provided with anti-skid protrusions (211) on the side surfaces close to the corresponding pressure plates (22), and a plurality of the pressure plates (22) are provided with anti-skid grooves (221) that can cooperate with the anti-skid protrusions (211) on the side surfaces close to the corresponding abutment plates (21). When the abutment plates (21) and the corresponding pressure plates (22) clamp the release film, the anti-skid protrusions (211) cooperate with the anti-skid grooves (221).

5. The release film feeding structure of a 3D printer according to claim 1, characterized in that: The driving assembly (24) comprises a first transmission belt (241), a second transmission belt (242) and a driving source (243); the first transmission belt (241) is transmission-connected in the first slide groove (12); a plurality of the abutment plates (21) are respectively fixedly connected to the first transmission belt (241); the second transmission belt (242) is transmission-connected in the second slide groove (13); a plurality of the pressure plates (22) are respectively fixedly connected to the second transmission belt (242); and the driving source (243) is used to drive the transmission of the first transmission belt (241) and the second transmission belt (242) at the same time.

6. The release film feeding structure of a 3D printer according to claim 5, characterized in that: The driving source (243) comprises a plurality of first synchronous pulleys (2431), a plurality of second synchronous pulleys (2432) and a motor (2433); the plurality of first synchronous pulleys (2431) are respectively rotatably connected to the printer body (1); the first transmission belt (241) is simultaneously meshed and connected with the plurality of first synchronous pulleys (2431); the plurality of second synchronous pulleys (2432) are respectively rotatably connected to the printer body (1); the second transmission belt (242) is simultaneously meshed and connected with the plurality of second synchronous pulleys (2432); the motor (2433) is fixedly connected to the printer body (1); one end of the output shaft of the motor (2433) is coaxially and fixedly connected with an idler wheel (2434); the idler wheel (2434) is simultaneously meshed and connected with any first synchronous pulley (2431) and any second synchronous pulley.

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