A wiper strip for cleaning the printer head base plate

Abstract

The present invention discloses a wiper strip for cleaning the print head bottom plate, which comprises a print head bottom plate. A nozzle bottom plate is fixedly connected to the right side of the print head bottom plate. A contact head is movably connected to the bottom of the print head bottom plate, and another contact head is movably connected to the bottom of the nozzle bottom plate. A triangular block is fixedly connected to the bottom of the contact head, and a wiper strip liquid storage groove is formed in the outer wall of the triangular block. By cleaning the bottom plate before and during printing by the printer, it will be cleaned twice each time. During the first cleaning, the liquid material and other sundries on the print head bottom plate are cleaned. During the second cleaning, the wiper strip contacts the print head bottom plate, and the cleaning agent in the wiper strip liquid storage groove will clean the print head bottom plate. With the wiper strip having such a structure, the print head bottom plate and the nozzle bottom plate can be cleaned more thoroughly, preventing the nozzle spray holes from being blocked, helping to extend the service life of the nozzle, and reducing the rejection rate during the production process of the sand core.

Description

Technical Field

[0001] The present invention belongs to the technical field of industrial-grade casting sand mold 3D printing, and particularly relates to a wiper strip for cleaning the printer nozzle bottom plate. Background Art

[0002] Before and during the printing process of an industrial-grade casting sand mold 3D printer, it is necessary to clean the print head bottom plate and the nozzle bottom plate. The wiper strip used for cleaning is the same as the car wiper strip commonly used in our daily life. The car wiper strip is used to remove water on the car windshield and has a certain cleaning effect, scraping off stains. This kind of wiper strip is very effective for cleaning flat or curved glass. However, the situation of the print head bottom plate is relatively special. The bottom plate of the nozzle and the print head bottom plate are not in the same plane and are recessed inward. It is necessary to prevent the wiper strip from directly scraping the nozzle bottom plate and causing damage to the nozzle.

[0003] In addition to cleaning the excess ink and debris on the print head bottom plate, the wiper strip also needs to clean the nozzle bottom plate with a cleaning agent, but the currently used wiper strip cannot clean it thoroughly. Summary of the Invention

[0004] The purpose of the present invention is to provide a wiper strip for cleaning the printer nozzle bottom plate, so as to solve the problem that in the prior art, a wiper strip for cleaning the printer nozzle bottom plate cannot be cleaned thoroughly due to the excess ink and debris on the print head bottom plate during use.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A wiper strip for cleaning the printer nozzle bottom plate, including a print head bottom plate, a nozzle bottom plate is fixedly connected to the right side of the print head bottom plate, a contact head is movably connected to the bottom of the print head bottom plate, another contact head is movably connected to the bottom of the nozzle bottom plate, a triangular block is fixedly connected to the bottom of the contact head, a wiper strip liquid storage groove is formed on the outer wall of the triangular block, and cleaning agent droplets are arranged on the outer wall of the triangular block through the wiper strip liquid storage groove. The wiper strip liquid storage groove is in contact with but not connected to the cleaning agent droplets.

[0006] Preferably, a connecting block is fixedly connected to the bottom of the triangular block, and a rectangular block is fixedly connected to the bottom of the connecting block.

[0007] Preferably, a leakage groove is formed at the gap between the bottom of the triangular block and the top of the rectangular block. The rectangular block and the triangular block are made of elastic rubber material.

[0008] Preferably, the contact head is made of a mixture of rubber and polyurethane materials, and the connecting block is made of a mixture of propylene-based and rubber materials.

[0009] Preferably, a vertical rod is fixedly connected to the bottom of the rectangular block, and the vertical rod is made of a mixture of rubber and nitrile rubber.

[0010] Preferably, a circular block is fixedly connected to the bottom of the vertical rod. The circular block is made of a mixture of nitrile rubber, high-strength polyester ammonia, and rubber. Anticorrosion layers are provided on the outer walls of the contact head, triangular block, rectangular block, connecting block, vertical rod, and circular block. The anticorrosion layer is made of a mixture of sodium diacetate and natural rubber.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] At the top of the wiper strip, there are two semi-circular wiper strip liquid storage grooves. The main purpose is to store cleaning agents. When the wiper strip is immersed in the cleaning pool, the wiper strip can carry more cleaning liquid, improving the cleaning efficiency. The two leakage grooves in the middle are to reserve space for the deformation of the top of the wiper strip. The lower part is mainly used to be installed on a fixture for fixation. On the current equipment, two wiper strips are installed on a fixed frame, and each wiper strip can wipe the print head bottom plate and the nozzle bottom plate. Using two wiper strips makes the cleaning effect better. After each wipe, the wiper strip will rotate and immerse into the cleaning pool, and there is a cleaning agent in the cleaning pool. When it rotates up to wipe the bottom plate, the wiper strip liquid storage groove will store a part of the cleaning agent. The printer cleans the bottom plate before and during printing, and each cleaning is done twice. During the first cleaning, the liquid material and other sundries on the print head bottom plate are cleaned. In the second pass, when the wiper strip contacts the print head bottom plate, the cleaning agent in the wiper strip liquid storage groove will clean the print head bottom plate. When the wiper strip reaches the nozzle bottom plate, the wiper strip does not directly contact the nozzle bottom plate, but the cleaning agent in the wiper strip liquid storage groove can contact the nozzle bottom plate to clean the nozzle bottom plate. Using a wiper strip with this structure can clean the print head bottom plate and the nozzle bottom plate more thoroughly, prevent the nozzle spray holes from being blocked, help extend the life of the nozzle, and reduce the rejection rate in the sand core production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a working schematic diagram of the present invention;

[0014] Figure 2 is a three-dimensional structure schematic diagram of the wiper strip of the present invention;

[0015] Figure 3 is a cross-sectional structure schematic diagram of the wiper strip of the present invention.

[0016] In the figure: 1. Print head bottom plate; 2. Nozzle bottom plate; 3. Cleaning agent liquid droplet; 4. Contact head; 5. Wiper strip liquid storage groove; 6. Triangular block; 7. Rectangular block; 8. Vertical rod; 9. Circular block; 10. Connecting block; 11. Anticorrosion layer; 12. Leakage groove. DETAILED DESCRIPTION OF THE INVENTION

[0017] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] Please refer to Figures 1-3 , the present invention provides a technical solution: a wiper strip for cleaning the printer nozzle bottom plate, including a print head bottom plate 1, a nozzle bottom plate 2 is fixedly connected to the right side of the print head bottom plate 1, a contact head 4 is movably connected to the bottom of the print head bottom plate 1, and another contact head 4 is movably connected to the bottom of the nozzle bottom plate 2. A triangular block 6 is fixedly connected to the bottom of the contact head 4. A wiper strip liquid storage tank 5 is provided on the outer wall of the triangular block 6. A cleaning agent droplet 3 is provided on the outer wall of the triangular block 6 through the provided wiper strip liquid storage tank 5. The wiper strip liquid storage tank 5 is in contact with but not connected to the cleaning agent droplet 3.

[0019] In this implementation scheme, there are two semi-circular wiper strip liquid storage tanks 5 at the top of the wiper strip. The main purpose is to store the cleaning agent. When the wiper strip is immersed in the cleaning pool, the wiper strip can carry more cleaning liquid, improving the cleaning efficiency. The two leakage grooves 12 in the middle are for reserving space for the top of the wiper strip to deform. The lower half is mainly used to be installed on the fixture for fixation. Currently, on the device, two wiper strips are installed on a fixed frame, and each wiper strip can scrape the print head bottom plate 1 and the nozzle bottom plate 2. Using two makes the cleaning effect better. After each scrape, the wiper strip will rotate and immerse into the cleaning pool, and there is a cleaning agent in the cleaning pool. When it rotates up to scrape the bottom plate, the wiper strip liquid storage tank 5 will store a part of the cleaning agent, and for the cleaning agent in the cleaning pool, there is a sensor on the device that will automatically replenish it. The printer cleans the bottom plate before and during printing, and each cleaning will be carried out twice. When cleaning for the first time, the liquid material and other sundries on the print head bottom plate 1 are cleaned. In the second pass, the wiper strip contacts the print head bottom plate 1, and the cleaning agent in the wiper strip liquid storage tank 5 will clean the print head bottom plate 1. When the wiper strip reaches the nozzle bottom plate 2, the wiper strip will not directly contact the nozzle bottom plate 2, but the cleaning agent in the wiper strip liquid storage tank 5 can contact the nozzle bottom plate 2 to clean the nozzle bottom plate 2. Using a wiper strip with this structure can clean the print head bottom plate 1 and the nozzle bottom plate 2 more thoroughly, prevent the nozzle spray holes from being blocked, help extend the life of the nozzle, and can reduce the waste rate in the sand core production process.

[0020] Specifically, a connecting block 10 is fixedly connected to the bottom of the triangular block 6, and a rectangular block 7 is fixedly connected to the bottom of the connecting block 10.

[0021] In this embodiment, the rectangular block 7 is connected to the triangular block 6 through the connecting block 10, and there is a leakage groove 12 in the middle, which can facilitate the deformation of the triangular block 6.

[0022] Specifically, a leakage groove 12 is provided at the gap between the bottom of the triangular block 6 and the top of the rectangular block 7. The rectangular block 7 and the triangular block 6 are made of elastic rubber material.

[0023] In this embodiment, a leakage groove 12 is provided between the triangular block 6 and the rectangular block 7. Both the rectangular block 7 and the triangular block 6 are made of rubber material.

[0024] Specifically, the contact head 4 is made of a mixture of rubber and polyurethane materials, and the connecting block 10 is made of a mixture of propylene-based and rubber materials.

[0025] In this embodiment, the contact head 4 is made of a mixture of rubber and polyurethane materials and has good wear resistance. The connecting block 10 is made of a mixture of propylene-based and rubber materials and has good tensile resistance.

[0026] Specifically, a vertical rod 8 is fixedly connected to the bottom of the rectangular block 7. The vertical rod 8 is made of a mixture of rubber and nitrile rubber.

[0027] In this embodiment, the vertical rod 8 is made of a mixture of rubber and nitrile rubber and has a higher hardness than the upper part.

[0028] Specifically, a circular block 9 is fixedly connected to the bottom of the vertical rod 8. The circular block 9 is made of a mixture of nitrile rubber, high-strength polyester ammonia and rubber. Anticorrosion layers 11 are provided on the outer walls of the contact head 4, the triangular block 6, the rectangular block 7, the connecting block 10, the vertical rod 8 and the circular block 9. The anticorrosion layer 11 is made of a mixture of sodium diacetate and natural rubber.

[0029] In this embodiment, the circular block 9 is made of a mixture of nitrile rubber, high-strength polyester ammonia and rubber and has the highest hardness in the wiper strip.

[0030] Working principle and usage process of the present invention: At the top of the wiper strip, there are two semi-circular wiper strip liquid storage grooves 5. The main purpose is to store cleaning agent. When the wiper strip is immersed in the cleaning pool, the wiper strip can carry more cleaning liquid, improving the cleaning efficiency. The two leakage grooves 12 in the middle are to reserve space for the top of the wiper strip to deform. The lower half is mainly used to be installed on a fixture for fixation. Currently, on the device, two wiper strips are installed on a fixed frame, and each wiper strip can scrape the print head bottom plate 1 and the nozzle bottom plate 2. Using two wiper strips makes the cleaning effect better. After each scrape, the wiper strip will rotate and be immersed in the cleaning pool, and there is cleaning agent in the cleaning pool. When it rotates up to scrape the bottom plate, the wiper strip liquid storage groove 5 will store a part of the cleaning agent, and the cleaning agent in the cleaning pool will be automatically replenished by a sensor on the device. The printer cleans the bottom plate before and during printing, and each cleaning is done twice. During the first cleaning, the liquid material and other sundries on the print head bottom plate 1 are cleaned. During the second pass, the wiper strip contacts the print head bottom plate 1, and the cleaning agent in the wiper strip liquid storage groove 5 will clean the print head bottom plate 1. When the wiper strip reaches the nozzle bottom plate 2, the wiper strip does not directly contact the nozzle bottom plate 2, but the cleaning agent in the wiper strip liquid storage groove 5 can contact the nozzle bottom plate 2 to clean the nozzle bottom plate 2.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wiper strip for cleaning the printer nozzle base plate, comprising a print head base plate (1), characterized in that: The right side of the printing head base plate (1) is fixedly connected to a nozzle base plate (2). The bottom of the printing head base plate (1) is movably connected to a contact head (4). The bottom of the nozzle base plate (2) is movably connected to another contact head (4). The bottom of the contact head (4) is fixedly connected to a triangular block (6). A wiper strip liquid storage groove (5) is formed in the outer wall of the triangular block (6). A cleaning agent droplet (3) is arranged on the outer wall of the triangular block (6) through the wiper strip liquid storage groove (5) provided. The wiper strip liquid storage groove (5) contacts but is not connected to the cleaning agent droplet (3). The bottom of the triangular block (6) is fixedly connected to a connecting block (10). The bottom of the connecting block (10) is fixedly connected to a rectangular block (7). A leakage groove (12) is formed in the gap between the bottom of the triangular block (6) and the top of the rectangular block (7). The rectangular block (7) and the triangular block (6) are made of elastic rubber material. The contact head (4) is made of a mixture of rubber and polyurethane materials. The connecting block (10) is made of a mixture of propylene-based and rubber materials.

2. The wiper strip for cleaning the printer nozzle base plate according to claim 1, characterized in that: The bottom of the rectangular block (7) is fixedly connected to a vertical rod (8).

3. The wiper strip for cleaning the printer nozzle bottom plate according to claim 2, characterized in that: The bottom of the vertical rod (8) is fixedly connected to a circular block (9). Anticorrosion layers (11) are arranged on the outer walls of the contact head (4), the triangular block (6), the rectangular block (7), the connecting block (10), the vertical rod (8) and the circular block (9). The anticorrosion layer (11) is made of a mixture of sodium diacetate and natural rubber.

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