Injection molding device for toilet production
By combining mold sealing injection and water flushing, the problems of mold adhesion and cleaning during toilet injection molding are solved, achieving efficient mold cleaning and improved finished product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TANGSHAN QILONG SANITARY WARE CO LTD
- Filing Date
- 2022-10-13
- Publication Date
- 2026-07-24
AI Technical Summary
In existing injection molding methods, toilet injection molding materials tend to stick together when cooling inside the mold, resulting in holes in the finished toilet, affecting quality and making mold cleaning difficult.
After the first and second molds are closed, liquid consumables are injected through an air bag that inflates and seals the mold. After injection molding is completed, the molds are separated and rinsed with water. Automatic cleaning is achieved by combining a moving mechanism and a cleaning mechanism.
This effectively prevents adhesion to the inner wall of the mold, improves the quality of the finished toilet, simplifies the mold cleaning process, and increases production efficiency.
Smart Images

Figure CN115519706B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of injection molding technology, and specifically to an injection molding apparatus for toilet production. Background Technology
[0002] Injection molding is a method of industrial product manufacturing. Products are typically made using rubber or plastic injection molding. Injection molding can be further divided into injection molding and die casting. When using injection molding equipment to mold a toilet, the toilet molding material is first melted into a liquid state. This liquid material is then injected into a toilet mold. The mold is cooled, allowing the hot liquid material to solidify. The molded toilet is then removed and polished. In current injection molding methods, two molds need to be joined together to seal the joint. The molten toilet injection molding material is then injected into the mold through the injection port and solidified by cooling. However, after long-term use, it was found that the liquid, gel-like toilet injection molding material would stick to the inner wall of the mold during cooling. This resulted in unevenly sized holes in the finished toilets produced using the same mold, greatly affecting the quality of the injection-molded toilets. To address the problem of weak mold cleaning in existing methods, this invention designs an injection molding device for toilet production. Summary of the Invention
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this invention provides an injection molding device for toilet production. The device involves closing a first mold and a second mold, then injecting liquid toilet injection molding material into the sealed chamber via an inflated air bag. After injection molding is completed, the first mold and the second mold are separated, and the mold is then rinsed with water.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, the present invention provides the following technical solution: an injection molding device for toilet production, comprising a support plate, and further comprising: support strips and pads, wherein four support strips are provided and fixedly connected to the support plate, a moving mechanism for laterally moving a first mold is provided between the four support strips, a telescopic mechanism for longitudinally moving the first mold is provided on the moving mechanism, and the bottom end of the telescopic mechanism is fixedly connected to the first mold, the pads are fixedly connected to the support plate, a second mold is fixedly connected to the pads, an air pump is installed on the support plate, sealing strips are fixedly connected to both ends of the first and second molds, first air bags are installed on the two sealing strips located at the rear ends, and a receiving groove is fixedly connected to the front end of the pads. The receiving slot is equipped with a support mechanism for supporting the second air bag. Two second air bags are installed on the support mechanism. The input ends of the first and second air bags are both connected to the output end of the air pump. A cleaning tank is fixedly connected to the support plate. A first support frame is fixedly connected to the top of the cleaning tank. A second support frame is fixedly connected to the top of the second mold. The cleaning tank is equipped with a cleaning mechanism for cleaning the first and second molds. A suction pump is installed on the support plate. The input end of the suction pump is connected to the receiving slot. The output end of the suction pump is connected to a water outlet elbow. The water outlet elbow is fixedly connected to the cleaning tank. A discharge bucket is installed on the support plate. The top of the discharge bucket is connected to a discharge pipe. The other end of the discharge pipe is connected to the first mold.
[0007] Preferably, the moving mechanism includes two moving frames, which are fixedly connected between two support bars located on the same side. A sliding plate is slidably connected between the two moving frames. Two first motors are installed at the top of the sliding plate. A toothed plate is fixedly connected to the top of the moving frame. A gear is fixedly connected to the output end of the first motor, and the gear meshes with the toothed plate.
[0008] Furthermore, the telescopic mechanism includes a cylinder, which is mounted on a sliding plate. A sliding groove is provided on the sliding plate, and a support plate is slidably connected in the sliding groove. The bottom end of the support plate is fixedly connected to the first mold.
[0009] Furthermore, the support mechanism includes a vertical plate, which is fixedly connected to the receiving slot. Two second motors are mounted on the vertical plate, and the output ends of the second motors are fixedly connected to threaded rods through the vertical plate. The two threaded rods are threadedly connected to a U-shaped bracket, and two second air bags are mounted on the U-shaped bracket.
[0010] As a further embodiment of this solution, the cleaning mechanism includes a water pump, which is installed at the rear end of the cleaning tank. The input end of the water pump is connected to the cleaning tank, and both output ends of the water pump are connected to an intermediate pipe. Multiple high-pressure nozzles are installed on the first support frame and the second support frame, and the multiple high-pressure nozzles are connected to the intermediate pipe.
[0011] As a further improvement to this solution, the left end of the cleaning box is provided with a drawer opening, a filter drawer is slidably disposed in the drawer opening, a filter port is provided in the filter drawer, a filter screen is fixedly connected in the filter port, and an operating handle is fixedly connected to the left end of the filter drawer.
[0012] Based on the aforementioned scheme, two support wings are fixedly connected to the support plate, and the two support wings are fixedly connected to the first mold.
[0013] Furthermore, based on the aforementioned solution, both the receiving trough and the cleaning tank are equipped with a protective coating.
[0014] Furthermore, based on the aforementioned scheme, the discharge pipe is made of heat-insulating material, and the inner wall of the discharge pipe is provided with a heat-insulating coating.
[0015] Furthermore, based on the aforementioned scheme, the four mounting strips are welded onto the support plate.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, the present invention provides an injection molding apparatus for toilet production, which has the following beneficial effects:
[0018] In this invention, the cooperation of the support bars, the movable structure, the telescopic mechanism, and the first mold facilitates the control of the overall telescopic and lateral movement of the first mold. The cooperation of the pads and the second mold facilitates the erection of the second mold. The cooperation of the sealing strip, the first air bag, the second air bag, and the air pump facilitates the inflation of the first and second air bags, ensuring a tight seal. The cooperation of the receiving groove and the support mechanism facilitates the control of the forward and backward movement of the second air bag. The cooperation of the cleaning tank, the first support frame, the second support frame, and the cleaning mechanism facilitates the extraction of water to clean the first and second molds. The cooperation of the suction pump, the water outlet elbow, and the cleaning tank facilitates the removal of... Wastewater from the receiving tank is pumped into the cleaning tank. The discharge bucket and discharge pipe work together to facilitate the injection of liquid toilet molding material into the first mold. Therefore, this toilet production injection molding device addresses the weakness of existing methods in cleaning injection molds. By closing the first and second molds and then sealing them with an inflated air bag, liquid toilet molding material is injected. After injection molding, the first and second molds are separated, and water is used to rinse the molds, removing any remaining solidified lumps and impurities. This invention is simple to use, effectively improves the quality of finished toilets, and is highly practical. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of the entire invention;
[0020] Figure 2For the present invention Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;
[0021] Figure 3 This is a schematic diagram of the overall three-dimensional structure from another perspective of the present invention;
[0022] Figure 4 This is a three-dimensional structural diagram of the moving mechanism and the telescopic mechanism in this invention;
[0023] Figure 5 For the present invention Figure 4 A magnified view of the structure at point B in the middle;
[0024] Figure 6 This is a three-dimensional structural diagram of the support mechanism in this invention;
[0025] Figure 7 This is a three-dimensional structural diagram of the cleaning mechanism in this invention;
[0026] Figure 8 This is a three-dimensional structural diagram of the receiving slot and cleaning box of the present invention.
[0027] In the diagram: 1. Support plate; 2. Support strip; 3. Moving mechanism; 4. Telescopic mechanism; 5. First mold; 6. Pad block; 7. Second mold; 8. Air pump; 9. Sealing strip; 10. First air bag; 11. Receiving groove; 12. Support mechanism; 13. Second air bag; 14. Cleaning box; 15. First support frame; 16. Second support frame; 17. Cleaning mechanism; 18. Suction pump; 19. Water outlet elbow; 20. Discharge bucket; 21. Discharge pipe; 22. Moving frame; 23. Sliding plate; 24. First motor; 25. Toothed plate; 26. Gear; 27. Cylinder; 28. Support plate; 29. Vertical plate; 30. Second motor; 31. Threaded rod; 32. U-shaped bracket; 33. Water pump; 34. Intermediate pipe; 35. High-pressure nozzle; 36. Filter drawer; 37. Filter screen; 38. Operating handle; 39. Support wing. Detailed Implementation
[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0029] Example
[0030] Please see Figure 1-3An injection molding device for toilet production includes a support plate 1, and further includes: support bars 2 and pads 6. Four support bars 2 are fixedly connected to the support plate 1. A moving mechanism 3 for laterally moving a first mold 5 is provided between the four support bars 2. A telescopic mechanism 4 for longitudinally moving the first mold 5 is provided on the moving mechanism 3. The bottom end of the telescopic mechanism 4 is fixedly connected to the first mold 5. The pads 6 are fixedly connected to the support plate 1, and a second mold 7 is fixedly connected to the pads 6. An air pump 8 is installed on the support plate 1. Sealing strips 9 are fixedly connected to both ends of the first mold 5 and the second mold 7. First air bags 10 are installed on the two sealing strips 9 at the rear ends. A receiving groove 11 is fixedly connected to the front end of the pads 6, and a receiving groove 11 is provided for supporting the second air bags 13. The support mechanism 12 has two second air bags 13 installed on it. The input ends of the first air bag 10 and the second air bag 13 are both connected to the output end of the air pump 8. A cleaning box 14 is fixedly connected to the support plate 1. A first support frame 15 is fixedly connected to the top of the cleaning box 14. A second support frame 16 is fixedly connected to the top of the second mold 7. A cleaning mechanism 17 for cleaning the first mold 5 and the second mold 7 is provided on the cleaning box 14. A suction pump 18 is installed on the support plate 1. The input end of the suction pump 18 is connected to the receiving groove 11. The output end of the suction pump 18 is connected to the water outlet elbow 19. The water outlet elbow 19 is fixedly connected to the cleaning box 14. A discharge bucket 20 is installed on the support plate 1. The top of the discharge bucket 20 is connected to the discharge pipe 21. The other end of the discharge pipe 21 is connected to the first mold 5.
[0031] Please see Figure 4 , 5 The moving mechanism 3 includes two moving frames 22, which are fixedly connected between two support bars 2 located on the same side. A sliding plate 23 is slidably connected between the two moving frames 22. Two first motors 24 are installed at the top of the sliding plate 23. A toothed plate 25 is fixedly connected to the top of the moving frame 22. A gear 26 is fixedly connected to the output end of the first motor 24. The gear 26 meshes with the toothed plate 25 to facilitate the lateral movement of the first mold 5. The telescopic mechanism 4 includes a cylinder 27, which is installed on the sliding plate 23. A sliding groove is provided on the sliding plate 23. A support plate 28 is slidably connected in the sliding groove. The bottom end of the support plate 28 is fixedly connected to the first mold 5 to facilitate the longitudinal telescopic movement of the first mold 5.
[0032] Please see Figure 6 The support mechanism 12 includes a vertical plate 29, which is fixedly connected to the receiving slot 11. Two second motors 30 are installed on the vertical plate 29. The output end of the second motor 30 passes through the vertical plate 29 and is fixedly connected to a threaded rod 31. The two threaded rods 31 are threadedly connected to a U-shaped bracket 32. Two second air bags 13 are installed on the U-shaped bracket 32 to facilitate the erection and support of the second air bags 13.
[0033] Please see Figure 7 The cleaning mechanism 17 includes a water pump 33, which is installed at the rear end of the cleaning tank 14. The input end of the water pump 33 is connected to the cleaning tank 14, and both output ends of the water pump 33 are connected to an intermediate pipe 34. Multiple high-pressure nozzles 35 are installed on the first support frame 15 and the second support frame 16. The multiple high-pressure nozzles 35 are connected to the intermediate pipe 34 to facilitate the pumping of water into the high-pressure nozzles 35 to rinse the first mold 5 and the second mold 7.
[0034] Please see Figure 8 The left end of the cleaning tank 14 has a drawer opening, and a filter drawer 36 is slidably installed inside the drawer opening. The filter drawer 36 has a filter port, and a filter screen 37 is fixedly connected inside the filter port. An operating handle 38 is fixedly connected to the left end of the filter drawer 36 to facilitate the filtering out of hard lumps and impurities washed down. Two support wings 39 are fixedly connected to the support plate 28 and are fixedly connected to the first mold 5 to improve the connection strength between the support plate 28 and the first mold 5. The receiving groove 11 and the cleaning tank 14 are both provided with protective coatings to prevent water from directly contacting the receiving groove 11 and the cleaning tank 14 and causing corrosion, thereby improving the service life of the receiving groove 11 and the cleaning tank 14. The discharge pipe 21 is made of heat-insulating material, and the inner wall of the discharge pipe 21 is provided with heat-insulating coating to prevent liquid toilet injection molding consumables from cooling and solidifying in the discharge pipe 21 and causing blockage. Four support strips 2 are welded to the support plate 1. Welding is not only simple to operate, but also has high connection strength and long service life.
[0035] It should be further explained that the air pump 8, suction pump 18, first motor 24, second motor 30, and water pump 33 in this embodiment are conventional devices known to those skilled in the art and available on the market. Models can be selected or customized according to actual needs. In this patent, we only use them without modifying their structure or function. Their setting method, installation method, and electrical connection method are readily understood by those skilled in the art as long as they are debugged according to the instructions. Therefore, they will not be elaborated further here. The air pump 8, suction pump 18, first motor 24, second motor 30, and water pump 33 are equipped with corresponding control switches. The installation position of the control switches can be selected according to actual usage requirements to facilitate operation and control by the operator. Furthermore, the motors need to be connected to a forward / reverse circuit before use for forward and reverse operation. Regarding the forward and reverse operation of the motors, according to the patent disclosed in patent number CN109889124A, the forward and reverse operation of the motors is a well-known technology to those skilled in the art, and the technology is already very mature and feasible.
[0036] The discharge tank 20 in this invention is a device that combines a container tank and a pump body. The discharge tank 20 has the functions of accommodating the melted toilet injection molding consumables and heat preservation, ensuring that the melted liquid toilet injection molding consumables will not solidify due to cooling in the discharge tank 20.
[0037] First, install the air pump 8, suction pump 18, first motor 24, second motor 30, and water pump 33 according to the instruction manual. When using this injection molding device for toilet production, place the molten liquid toilet injection molding material into the discharge tank 20. After aligning the first mold 5 and the second mold 7, start the air pump 8. The air pump 8 generates a large amount of gas, which is then output into the first air bag 10 and the second air bag 13. The first air bag 10 and the second air bag 13 inflate, tightly pressing the sealing strip 9 together. The sealing strip 9 causes the first mold 5 and the second mold 7 to fit tightly together. The discharge tank 20 then outputs the toilet injection molding material through the discharge outlet. Material 21 is injected into the first mold 5. After the first mold 5 and the second mold 7 are filled with toilet injection molding material, cooling and solidification are carried out. After the toilet injection molding material solidifies and forms, the air pump 8 is turned off, and the gas in the first air bag 10 and the second air bag 13 gradually leaks out. The first air bag 10 and the second air bag 13 deflat due to lack of air. The second motor 30 is started, which drives the threaded rod 31 to rotate. The U-shaped bracket 32, which is threaded onto the threaded rod 31, moves forward. The U-shaped bracket 32 drives the second air bag 13 to move forward. The cylinder 27 is started, and the output end of the cylinder 27 pushes the support plate 28 forward. The support plate 28 drives the first mold 5 to move forward. The first motor 24 is started, driving the gear 26 to rotate. The gear 26 meshes with the gear plate 25 and moves to the left. The first motor 24 drives the sliding plate 23 to move to the left within the moving frame 22. The sliding plate 23 drives the support plate 28 to move to the left, and the support plate 28 drives the first mold 5 to move to the left. The first mold 5 moves above the cleaning tank 14, and the water pump 33 is started. The water pump 33 draws water from the cleaning tank 14 and pumps it into the intermediate pipe 34. The intermediate pipe 34 then sends the water into the high-pressure nozzle 35, which sprays water out. The high-pressure water flow washes the first mold 5 and the second mold 7, cleaning the first mold 5. The hard lumps and impurities attached to the inner wall of the first mold 5 and the second mold 7 are washed away. The water flow carries the impurities into the receiving tank 11 and the cleaning tank 14. The suction pump 18 is started, and the suction pump 18 sucks the sewage in the receiving tank 11 and pumps it into the water outlet elbow 19. The sewage passes through the filter screen 37, and the impurities in the sewage are filtered out. The filtered clean water flows into the cleaning tank 14 for storage. The water source is recycled in this way. When the first mold 5 and the second mold 7 are cleaned, the first motor 24 is started in reverse, the cylinder 27 is closed, the first mold 5 is reset, the air pump 8 is started, and the first air bag 10 and the second air bag 13 are inflated. Then, normal use can continue.
[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An injection molding apparatus for toilet production, comprising a support plate (1), characterized in that, Also includes: The support bar (2) is provided in four parts. The four support bars (2) are fixedly connected to the bearing plate (1). A moving mechanism (3) for moving the first mold (5) laterally is provided between the four support bars (2). A telescopic mechanism (4) for moving the first mold (5) longitudinally is provided on the moving mechanism (3). The bottom end of the telescopic mechanism (4) is fixedly connected to the first mold (5). A pad (6) is fixedly connected to a support plate (1). A second mold (7) is fixedly connected to the pad (6). An air pump (8) is installed on the support plate (1). Sealing strips (9) are fixedly connected to both the left and right ends of the first mold (5) and the second mold (7). A first air bag (10) is installed on each of the two sealing strips (9) at the rear end. A receiving groove (11) is fixedly connected to the front end of the pad (6). A support mechanism (12) for supporting the second air bag (13) is provided on the receiving groove (11). Two second air bags (13) are installed on the support mechanism (12). The input ends of the first air bag (10) and the second air bag (13) are connected to the output end of the air pump (8). A cleaning tank (14) is fixedly connected to the support plate (1). A first support frame (15) is fixedly connected to the top of the cleaning tank (14). A second support frame (16) is fixedly connected to the top of the second mold (7). A cleaning mechanism (17) for cleaning the first mold (5) and the second mold (7) is provided on the cleaning tank (14). A suction pump (18) is installed on the support plate (1). The input end of the suction pump (18) is connected to the receiving groove (11). The output end of the suction pump (18) is connected to the water outlet elbow (19). The water outlet elbow (19) is fixedly connected to the cleaning tank (14). A discharge bucket (20) is installed on the support plate (1). The top of the discharge bucket (20) is connected to the discharge pipe (21). The other end of the discharge pipe (21) is connected to the first mold (5). The moving mechanism (3) includes two moving frames (22), which are fixedly connected between two support bars (2) located on the same side. A sliding plate (23) is slidably connected between the two moving frames (22). Two first motors (24) are installed on the top of the sliding plate (23). A toothed plate (25) is fixedly connected to the top of the moving frame (22). A gear (26) is fixedly connected to the output end of the first motor (24). The gear (26) meshes with the toothed plate (25). The telescopic mechanism (4) includes a cylinder (27), which is mounted on a sliding plate (23). A sliding groove is provided on the sliding plate (23), and a support plate (28) is slidably connected in the sliding groove. The bottom end of the support plate (28) is fixedly connected to the first mold (5). The support mechanism (12) includes a vertical plate (29), which is fixedly connected to the receiving slot (11). Two second motors (30) are installed on the vertical plate (29). The output end of the second motor (30) passes through the vertical plate (29) and is fixedly connected to a threaded rod (31). The two threaded rods (31) are threadedly connected to a U-shaped bracket (32). Two second air bags (13) are installed on the U-shaped bracket (32).
2. The injection molding apparatus for toilet production according to claim 1, characterized in that, The cleaning mechanism (17) includes a water pump (33), which is installed at the rear end of the cleaning tank (14). The input end of the water pump (33) is connected to the cleaning tank (14), and both output ends of the water pump (33) are connected to an intermediate pipe (34). Multiple high-pressure nozzles (35) are installed on the first support frame (15) and the second support frame (16), and the multiple high-pressure nozzles (35) are connected to the intermediate pipe (34).
3. The injection molding apparatus for toilet production according to claim 2, characterized in that, The cleaning box (14) has a drawer opening at the left end, and a filter drawer (36) is slidably arranged inside the drawer opening. A filter port is opened inside the filter drawer (36), and a filter screen (37) is fixedly connected inside the filter port. An operating handle (38) is fixedly connected to the left end of the filter drawer (36).
4. The injection molding apparatus for toilet production according to claim 3, characterized in that, Two support wings (39) are fixedly connected to the support plate (28), and the two support wings (39) are fixedly connected to the first mold (5).
5. The injection molding apparatus for toilet production according to claim 4, characterized in that, Both the receiving slot (11) and the cleaning tank (14) are equipped with protective coatings.
6. The injection molding apparatus for toilet production according to claim 5, characterized in that, The discharge pipe (21) is made of heat-insulating material, and the inner wall of the discharge pipe (21) is provided with a heat-insulating coating.
7. The injection molding apparatus for toilet production according to claim 6, characterized in that, The four support bars (2) are welded onto the support plate (1).