Flat rimmed paper tray machine
Patent Information
- Application Number
- CN202522205569.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-20
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-20
AI Technical Summary
[0002]现有的卷边纸盘只能用盖子内壁卡住卷边背面进行封口,密封性不足,拟设计一种平口卷边纸盘机,在卷边内侧压出平面环形成平口,方便封口,提高密封性
[0024]本实用新型的有益效果为,已经压出平面环的纸盘放入第一底模,第一盘体压头下降,第一顶面与第一压平口面抵接压住平面环的内圈,第一盘体压头带动第一底模继续下降,立边套内壁配合立边侧壁将平面环的外圈向上立起。因此,本实用新型与现有技术相比具有实质性特点和进步。
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Figure CN224781470U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a paper tray machine, and more particularly to a flat-mouthed, edge-rolling paper tray machine. Background Technology
[0002] Existing rolled paper trays can only be sealed by clamping the back of the rolled edge with the inner wall of the lid, which is not airtight. It is proposed to design a flat-mouth rolled paper tray machine that presses out a flat ring on the inside of the rolled edge to form a flat mouth, which facilitates sealing and improves airtightness. Utility Model Content
[0003] In view of the technical problems existing in the background art, the present utility model aims to provide a flat-mouth edge-rolling paper tray machine, which designs a vertical edge mold, with the first flat-mouth surface and the first top surface pressing the inner ring of the flat ring, and the vertical edge side wall cooperating with the inner wall of the vertical edge sleeve to lift the outer ring of the flat ring for edge rolling.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This flat-edge paper tray rolling machine includes a vertical edge mold, which includes a cooperating upper vertical edge mold and a lower vertical edge mold. The upper vertical edge mold is vertically and vertically arranged relative to the lower vertical edge mold. The lower vertical edge mold includes a first bottom mold and a vertical edge sleeve. The vertical edge sleeve is sleeved outside the first bottom mold and vertically and vertically arranged relative to the first bottom mold. The upper vertical edge mold includes a first tray body pressure head. The first tray body pressure head has a first flattening surface and a vertical edge sidewall. The first bottom mold has an annular first top surface corresponding to the first flattening surface. The vertical edge sidewall cooperates with the inner wall of the vertical edge sleeve.
[0005] In this scheme, the paper tray with the flat ring already pressed out is placed into the first bottom mold. The first tray body pressure head descends, and the first top surface and the first pressing surface abut against and press the inner ring of the flat ring. The first tray body pressure head drives the first bottom mold to continue to descend, and the inner wall of the vertical sleeve cooperates with the vertical side wall to lift the outer ring of the flat ring upward.
[0006] Preferably, the upper die of the vertical edge further includes a first rolled edge sleeve, the first rolled edge sleeve is provided with a first rolled edge groove, the first rolled edge sleeve is sleeved outside the first disc body pressure head and is raised and lowered relative to the first disc body pressure head, and the top of the vertical edge sleeve is provided with a rolled edge protrusion corresponding to the first rolled edge groove.
[0007] In this scheme, after the first disc body and the first bottom mold are in place, the first rolled edge sleeve continues to descend, and the end of the raised outer ring of the plane is rolled up along the first rolled edge groove to form a U-shaped edge. Finally, the rolled edge protrusion cooperates with the first rolled edge groove to shape the U-shaped edge.
[0008] Preferably, the inner wall of the standing edge sleeve has a taper at the rolled edge protrusion.
[0009] In this design, the outer ring of the upright planar ring has a taper, allowing it to be smoothly turned outward along the first rolled edge groove.
[0010] Preferably, the first bottom mold is provided with a first receiving groove, the first top surface is arranged around the first receiving groove, and the first disc body pressure head includes a first disc bottom pressure plate and a first pressing sleeve. The first pressing sleeve is sleeved outside the first disc bottom pressure plate and the first pressing sleeve is raised and lowered relative to the first disc bottom pressure plate.
[0011] In this scheme, during the descent of the upper mold on the vertical side, the first bottom pressure plate of the first platen first extends into the first receiving groove to press down the bottom of the platen, and then the first flattening sleeve extends into the first receiving groove to press down the platen wall and the flat ring to prevent the platen from shifting.
[0012] Preferably, it further includes a flat-mouth forming mold, which includes an upper forming mold and a lower forming mold. The upper forming mold is vertically oriented relative to the lower forming mold. The upper forming mold includes a pressing sleeve and a forming pressure head. The pressing sleeve is sleeved outside the forming pressure head and is vertically oriented relative to the forming pressure head. The lower forming mold is provided with a supporting plate and a forming groove. The supporting plate is arranged around the forming groove. The supporting plate cooperates with the pressing sleeve, and the forming groove cooperates with the forming pressure head.
[0013] In this scheme, the upper forming mold descends, the pressure sleeve first abuts against the support plate to press down the paper, and the forming pressure head continues to descend until it abuts against the forming groove, and the paper is stretched to form a flat paper tray.
[0014] Preferably, the device further includes a curling die, which includes an upper curling die and a lower curling die. The upper curling die includes a second curling sleeve and a second disc-shaped pressing head. The second curling sleeve is fitted outside the second disc-shaped pressing head and is vertically oriented relative to the second disc-shaped pressing head. The second curling sleeve has a second curling groove, and the second disc-shaped pressing head has a second pressing flat surface. The lower curling die includes a second bottom die and a third curling sleeve. The second bottom die has a second top surface corresponding to the second pressing flat surface. The third curling sleeve is fitted outside the second bottom die and is fixedly oriented. The third curling sleeve has a third curling groove corresponding to the second curling groove, and the third curling groove is higher than the second top surface.
[0015] In this scheme, the upper die for edge rolling descends, the second flattening surface and the second top surface press against the flat ring, the second edge rolling sleeve continues to descend, and the vertical edge continues to roll along the second edge rolling groove and the third edge rolling groove. The edge rolling is completed in multiple steps, which yields better results.
[0016] Preferably, the outer wall of the third hemmed groove has a taper, and the opening of the third hemmed groove allows the outer wall of the second hemmed groove to extend into it.
[0017] In this design, the rolled edge can enter the third rolled edge groove along the second rolled edge groove without contacting the outside of the third rolled edge sleeve.
[0018] Preferably, the second bottom mold is provided with a second receiving groove, the second top surface is arranged around the second receiving groove, and the second disc body pressure head includes a second disc bottom pressure plate and a second pressing sleeve. The second pressing sleeve is sleeved outside the second disc bottom pressure plate and the second pressing sleeve is raised and lowered relative to the second disc bottom pressure plate.
[0019] In this scheme, during the descent of the upper die for edge rolling, the bottom pressure plate of the second disc first extends into the second receiving groove to press down the bottom of the disc, and then the second flattening sleeve extends into the second receiving groove to press down the disc wall and the flat ring, so as to prevent the disc body from shifting.
[0020] Preferably, it further includes a material transfer mechanism, wherein the flat-mouth forming mold, the vertical-side mold, and the edge-rolling mold are arranged in sequence, and the material transfer mechanism connects the flat-mouth forming mold, the vertical-side mold, and the edge-rolling mold. The material transfer mechanism includes a feeding nozzle, which is lifted and lowered and moved horizontally.
[0021] In this scheme, the feeding nozzle adsorbs the bottom of the tray, rises and falls to enter and exit the corresponding receiving slot, and moves horizontally to avoid the corresponding upper mold or transfer paper tray.
[0022] Preferably, the system also includes a turntable, and the flat-mouth forming mold, the vertical edge mold, and the edge-rolling mold are arranged sequentially along the circumference of the turntable.
[0023] In this scheme, the turntable drives the corresponding molds to the feeding nozzle in turn.
[0024] The beneficial effects of this utility model are as follows: the paper tray with the flat ring already pressed out is placed into the first bottom mold; the first tray pressing head descends, and the first top surface abuts against the first pressing surface, pressing down on the inner ring of the flat ring; the first tray pressing head drives the first bottom mold to continue descending; and the inner wall of the vertical sleeve, in conjunction with the vertical side wall, lifts the outer ring of the flat ring upwards. Therefore, this utility model has substantial features and progress compared with the prior art. Attached Figure Description
[0025] The following description, in conjunction with the accompanying drawings, details the embodiments and working principles of this utility model.
[0026] Figure 1 This is a three-dimensional structural diagram of the vertical edge mold in this utility model.
[0027] Figure 2 This is a cross-sectional view of the mold closing mechanism of the vertical side mold in this utility model.
[0028] Figure 3 This is a cross-sectional view of the neutral side upper mold of this utility model.
[0029] Figure 4 This is a cross-sectional view of the paper tray formed by the edge mold in this utility model.
[0030] Figure 5This is a three-dimensional structural diagram of the flat-mouth forming mold of this utility model.
[0031] Figure 6 This is a cross-sectional view of the flat-mouth forming mold of this utility model.
[0032] Figure 7 This is a three-dimensional structural diagram of the paper tray formed by the flat-mouth forming mold of this utility model.
[0033] Figure 8 This is a three-dimensional structural diagram of the edge-rolling mold in this utility model.
[0034] Figure 9 This is a cross-sectional view of the edge-rolling mold closing in this utility model.
[0035] Figure 10 This is a cross-sectional view of the edge-rolling mold in this utility model.
[0036] Figure 11 This is a cross-sectional view of the paper tray formed by the edge-rolling mold in this utility model.
[0037] In the diagram: 1. Vertical edge mold; 2. Upper vertical edge mold; 3. Lower vertical edge mold; 4. First bottom mold; 5. Vertical edge sleeve; 6. First disc body pressure head; 7. Second flattening sleeve; 8. Vertical edge side wall; 9. First top surface; 10. First rolled edge sleeve; 11. Second disc bottom pressure plate; 12. Rolled edge protrusion; 13. First receiving groove; 14. First disc bottom pressure plate; 15. First flattening sleeve; 16. Flattening forming mold; 17. Upper forming mold ; 18. Lower forming mold; 19. Edge pressing sleeve; 20. Forming pressure head; 21. Edge supporting plate; 22. Forming groove; 23. Hemming mold; 24. Upper hemming mold; 25. Lower hemming mold; 26. Second hemming sleeve; 27. Second disc pressure head; 28. Second receiving groove; 29. Third hemming groove; 30. Second bottom mold; 31. Third hemming sleeve; 32. Second top surface; 33. First hemming groove; 34. Second hemming groove. Detailed Implementation
[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the implementation of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0039] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0040] In the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.
[0041] See appendix Figure 1-4 An embodiment of this invention provides a flat-edge crimping paper tray machine, comprising a vertical edge mold 1. The vertical edge mold 1 includes a cooperating upper vertical edge mold 2 and a lower vertical edge mold 3. The upper vertical edge mold 2 is vertically and vertically disposed relative to the lower vertical edge mold 3. The lower vertical edge mold 3 includes a first bottom mold 4 and a vertical edge sleeve 5. The vertical edge sleeve 5 is sleeved outside the first bottom mold 4 and vertically and vertically disposed relative to the first bottom mold 4. The upper vertical edge mold 2 includes a first tray body pressure head 6, which has a first flattening surface and a vertical edge sidewall 8. The first bottom mold 4 has an annular first top surface 9 corresponding to the first flattening surface. The vertical edge sidewall 8 cooperates with the inner wall of the vertical edge sleeve 5. The upper vertical edge mold 2 also includes a first crimping sleeve 1. 0. The first rolled edge sleeve 10 is provided with a first rolled edge groove 33. The first rolled edge sleeve 10 is sleeved outside the first disc body pressure head 6 and is raised and lowered relative to the first disc body pressure head 6. The top of the upright sleeve 5 is provided with a rolled edge protrusion 12 corresponding to the first rolled edge groove 33. The inner wall of the upright sleeve 5 has a taper at the rolled edge protrusion 12. The first bottom mold 4 is provided with a first receiving groove 13. The first top surface 9 is arranged around the first receiving groove 13. The first disc body pressure head 6 includes a first disc bottom pressure plate 14 and a first flattening sleeve 15. The first flattening sleeve 15 is sleeved outside the first disc bottom pressure plate 14 and is raised and lowered relative to the first disc bottom pressure plate 14.
[0042] In this embodiment, the flat paper tray is placed into the first receiving groove 13, the vertical edge upper mold 2 descends, the first tray bottom pressure plate 14 and the bottom of the first receiving groove 13 press against the bottom of the paper tray, the first flat opening sleeve 15 continues to descend, the first flat opening sleeve 15, the groove wall of the first receiving groove 13, the first top surface 9 press against the paper tray wall and the inner ring of the plane ring, the first tray body pressure head 6 drives the first bottom mold 4 to continue to move down, the vertical edge sleeve 5 lifts the outer ring of the plane ring, after the first tray body pressure head 6 and the first bottom mold 4 are in place, the first edge rolling sleeve 10 continues to descend, the tapered vertical edge is turned outward along the first edge rolling groove 33, the first edge rolling groove 33 abuts against the edge rolling protrusion 12 and shapes the edge rolling.
[0043] The main power source drives the upper mold 2 or the lower mold 3 of the vertical side to rise and fall as a whole. The relative rise and fall of the vertical sleeve 5 and the first bottom mold 4 can be that the first bottom mold 4 includes a base, and the base is equipped with a power source to drive the vertical sleeve 5 to rise, or the vertical sleeve 5 includes a base, and the first bottom mold 4 is connected to the base through an elastic element. The other relative rise and fall structures are similar. The first rolled edge sleeve 10 is set to rise and fall relative to the first platen pressing head 6. If the main power source is connected to the first platen pressing head 6, the first platen pressing head 6 drives the first rolled edge sleeve 10 to fall through the auxiliary power source. If the main power source is connected to the first rolled edge sleeve 10, the first platen pressing head 6 is connected to the first rolled edge sleeve 10 through an elastic element. The connection between the lower mold 3 of the vertical side, the first platen bottom pressing plate 14, and the first pressing mouth sleeve 15 is similar. Depending on the volume, the paper plate can also be called a paper bowl, paper cup, etc.
[0044] In other alternative implementations, the lower die 3 can rise while the others are reversed; two edge-rolling grooves can be set to roll the edge at the required rolling angle, allowing the disc body to be formed simultaneously with the rising edge, and then the edge can be rolled.
[0045] See appendix Figure 5-7 It also includes a flat-mouth forming mold 16, which includes an upper forming mold 17 and a lower forming mold 18. The upper forming mold 17 is raised and lowered relative to the lower forming mold 18. The upper forming mold 17 includes a pressing sleeve 19 and a forming pressing head 20. The pressing sleeve 19 is sleeved outside the forming pressing head 20 and is raised and lowered relative to the forming pressing head 20. The lower forming mold 18 is provided with a supporting plate 21 and a forming groove 22. The supporting plate 21 is arranged around the forming groove 22. The supporting plate 21 cooperates with the pressing sleeve 19, and the forming groove 22 cooperates with the forming pressing head 20.
[0046] In this embodiment, the paper is placed on the lower forming mold 18, the upper forming mold 17 descends, the pressing sleeve 19 and the supporting plate 21 first press the paper, and the forming pressure head 20 presses the paper into the forming groove 22 to stretch and form it. The paper is pre-sprayed or coated with oil to soften it before forming to prevent stretching and tearing, which is a mature technology.
[0047] See appendix Figure 8-11It also includes a curling die 23, which includes an upper curling die 24 and a lower curling die 25. The upper curling die 24 includes a second curling sleeve 26 and a second disc-shaped pressing head 27. The second curling sleeve 26 is fitted outside the second disc-shaped pressing head 27 and is raised and lowered relative to the second disc-shaped pressing head 27. The second curling sleeve 26 has a second curling groove 34. The second disc-shaped pressing head 27 has a second pressing opening surface. The lower curling die 25 includes a second bottom die 30 and a third curling sleeve 31. The second bottom die 30 has a second top surface 32 corresponding to the second pressing opening surface. The third curling sleeve 31 is fitted outside the second bottom die 30 and fixed. The third edge sleeve 31 is provided with a third edge groove 29 corresponding to the second edge groove 34. The third edge groove 29 is higher than the second top surface 32. The outer groove wall of the third edge groove 29 has a taper. The groove opening of the third edge groove 29 allows the outer groove wall of the second edge groove 34 to extend into it. The second bottom mold 30 is provided with a second receiving groove 28. The second top surface 32 is arranged around the second receiving groove 28. The second disc body pressure head 27 includes a second disc bottom pressure plate 11 and a second pressing sleeve 7. The second pressing sleeve 7 is sleeved on the second disc bottom pressure plate 11 and is raised and lowered relative to the second disc bottom pressure plate 11.
[0048] In this embodiment, the flat (curled) paper tray is placed into the second receiving groove 28, the upper curling mold 24 descends, the second tray bottom pressure plate 11 and the bottom of the second receiving groove 28 press against the bottom of the paper tray, the second flat-mouth sleeve 7 continues to descend, the second flat-mouth sleeve 7, the groove wall of the second receiving groove 28 and the second top surface 32 press against the paper tray wall and the flat ring, the second curling sleeve 26 continues to descend, the tapered vertical edge or curled edge is turned outward along the second curling groove 34, and guided into the third curling groove 29 through the second curling groove 34 to complete the large-angle curling. The height difference between the third curling groove 29 and the second top surface 32 determines the height difference between the curled edge and the flat edge. Another set of curling molds 23 can be designed for curling and shaping, and the curling is completed in multiple times, resulting in a good curling effect and a small height difference between the curled edge and the flat edge.
[0049] Furthermore, it also includes a material transfer mechanism. The flat-mouth forming mold 16, the vertical-side mold 1, and the edge-rolling mold 23 are arranged in sequence. The material transfer mechanism connects the flat-mouth forming mold 16, the vertical-side mold 1, and the edge-rolling mold 23. The material transfer mechanism includes a feeding nozzle, which is lifted and lowered and moved horizontally. It also includes a turntable. The flat-mouth forming mold 16, the vertical-side mold 1, and the edge-rolling mold 23 are arranged in sequence along the circumference of the turntable.
[0050] In this embodiment, the turntable drives the flat forming mold 16, the vertical edge mold 1, and the curling edge mold 23 to the feeding nozzle in turn. The feeding nozzle lifts and lowers to pick up and put down the paper tray. The feeding nozzle moves horizontally to avoid obstacles. The horizontal movement includes an arc trajectory. The paper can be fed manually or by the feeding nozzle. The lifting stroke of the feeding nozzle needs to be varied.
[0051] In other alternative embodiments, the flat forming mold 16, the vertical edge mold 1, and the curling mold 23 may remain stationary, while the feeding nozzle carries the paper (paper tray) sequentially to the flat forming mold 16, the vertical edge mold 1, and the curling mold 23.
[0052] The above description represents the preferred embodiment of this utility model. It should be noted that the scope of protection of this utility model is not limited thereto. For those skilled in the art, various improvements, modifications, or equivalent substitutions can be made without departing from the equivalent inventive concept disclosed in this utility model, and these can also be considered as part of the scope of protection of this utility model.
Claims
1. A flat-edge paper roll machine, characterized in that: The mold includes a vertical edge mold (1), which includes a matching upper vertical edge mold (2) and a lower vertical edge mold (3). The upper vertical edge mold (2) is raised and lowered relative to the lower vertical edge mold (3). The lower vertical edge mold (3) includes a first bottom mold (4) and a vertical edge sleeve (5). The vertical edge sleeve (5) is fitted outside the first bottom mold (4) and raised and lowered relative to the first bottom mold (4). The upper vertical edge mold (2) includes a first disc-shaped pressure head (6). The first disc-shaped pressure head (6) is provided with a first flattening surface and a vertical edge sidewall (8). The first bottom mold (4) is provided with an annular first top surface (9) corresponding to the first flattening surface. The vertical edge sidewall (8) is matched with the inner wall of the vertical edge sleeve (5).
2. The flat-mouth edge-rolling paper tray machine as described in claim 1, characterized in that: The upper mold (2) of the vertical edge also includes a first rolled edge sleeve (10), the first rolled edge sleeve (10) is provided with a first rolled edge groove (33), the first rolled edge sleeve (10) is sleeved outside the first disc body pressure head (6) and is raised and lowered relative to the first disc body pressure head (6), and the top of the vertical edge sleeve (5) is provided with a rolled edge protrusion (12) corresponding to the first rolled edge groove (33).
3. A flat-mouth edge-rolling paper tray machine as described in claim 2, characterized in that: The inner wall of the standing sleeve (5) has a taper at the rolled edge protrusion (12).
4. A flat-mouth edge-rolling paper tray machine as described in claim 1, characterized in that: The first bottom mold (4) is provided with a first receiving groove (13), and the first top surface (9) is arranged around the first receiving groove (13). The first disc body pressure head (6) includes a first disc bottom pressure plate (14) and a first pressing sleeve (15). The first pressing sleeve (15) is sleeved outside the first disc bottom pressure plate (14) and the first pressing sleeve (15) is raised and lowered relative to the first disc bottom pressure plate (14).
5. A flat-mouth edge-rolling paper tray machine as described in claim 2, characterized in that: It also includes a flat-mouth forming mold (16), which includes an upper forming mold (17) and a lower forming mold (18). The upper forming mold (17) is raised and lowered relative to the lower forming mold (18). The upper forming mold (17) includes a pressing sleeve (19) and a forming pressure head (20). The pressing sleeve (19) is sleeved outside the forming pressure head (20) and is raised and lowered relative to the forming pressure head (20). The lower forming mold (18) is provided with a supporting plate (21) and a forming groove (22). The supporting plate (21) is arranged around the forming groove (22). The supporting plate (21) cooperates with the pressing sleeve (19), and the forming groove (22) cooperates with the forming pressure head (20).
6. A flat-mouth edge-rolling paper tray machine as described in claim 5, characterized in that: It also includes a curling mold (23), which includes an upper curling mold (24) and a lower curling mold (25). The upper curling mold (24) includes a second curling sleeve (26) and a second disc pressure head (27). The second curling sleeve (26) is fitted outside the second disc pressure head (27) and is raised and lowered relative to the second disc pressure head (27). The second curling sleeve (26) is provided with a second curling groove (34). The second disc pressure head (27) is provided with a second flattening surface. The lower curling mold (25) includes a second bottom mold (30) and a third curling sleeve (31). The second bottom mold (30) is provided with a second top surface (32) corresponding to the second flattening surface. The third curling sleeve (31) is fitted outside the second bottom mold (30) and is fixedly installed. The third curling sleeve (31) is provided with a third curling groove (29) corresponding to the second curling groove (34). The third curling groove (29) is higher than the second top surface (32).
7. A flat-mouth edge-rolling paper tray machine as described in claim 6, characterized in that: The outer wall of the third edge groove (29) is tapered, and the opening of the third edge groove (29) allows the outer wall of the second edge groove (34) to extend into it.
8. A flat-mouth edge-rolling paper tray machine as described in claim 6, characterized in that: The second bottom mold (30) is provided with a second receiving groove (28), and the second top surface (32) is arranged around the second receiving groove (28). The second disc body pressure head (27) includes a second disc bottom pressure plate (11) and a second pressing sleeve (7). The second pressing sleeve (7) is sleeved outside the second disc bottom pressure plate (11) and the second pressing sleeve (7) is raised and lowered relative to the second disc bottom pressure plate (11).
9. A flat-mouth edge-rolling paper tray machine as described in claim 7, characterized in that: It also includes a material transfer mechanism. The flat forming mold (16), the vertical edge mold (1) and the edge rolling mold (23) are arranged in sequence. The material transfer mechanism connects the flat forming mold (16), the vertical edge mold (1) and the edge rolling mold (23). The material transfer mechanism includes a feeding nozzle, which is raised and lowered and moved horizontally.
10. A flat-mouth edge-rolling paper tray machine as described in claim 9, characterized in that: It also includes a turntable, and the flat forming mold (16), the vertical edge mold (1) and the edge rolling mold (23) are arranged sequentially along the circumference of the turntable.