A waste recycling structure and an automobile grille injection molding device

Abstract

The present invention discloses a waste recycling structure in the technical field of automotive grille injection molding, including a support assembly, a first molding part and a second molding part. The first molding part and the second molding part are used for injection molding the automotive grille, and the support assembly is used for supporting and driving the first molding part and the second molding part. In the present invention, the provided collection shell can collect and cool the fluid that overflows during the fluid injection process, and then the cooled waste is scraped off by the scraper during the demolding process. When the mold in the mold cavity is demolded, during the resetting process of the first molding part and the second molding part, the cooled waste in the collection shell can be pushed out through the push plate, thereby completing the recycling of the waste, preventing the waste from molding on the first molding part and the second molding part, and reducing the cleaning difficulty and the resistance during mold opening.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive grille injection molding, and specifically to a waste recycling structure and an automotive grille injection molding device. Background Technique

[0002] An automotive grille, also known as a front grille or radiator grille, is an important part of the front of a vehicle and is formed by injection molding;

[0003] After the automotive grille is injection molded, its surface needs to be kept smooth and flat without defects. Therefore, when injecting, it is necessary to ensure that there is no air in the mold after injecting the fluid. Thus, exhaust holes are usually provided to exhaust the internal air by squeezing it when the fluid is injected into the mold. And the injection volume of the fluid is greater than the capacity of the mold cavity. So, the excess fluid will be discharged to the outside through the exhaust holes and cooled. The cooled fluid will solidify on the mold and usually needs to be recycled manually, with low efficiency.

[0004] Based on this, the present invention designs a waste recycling structure and an automotive grille injection molding device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a waste recycling structure and an automotive grille injection molding device to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A waste recycling structure, including a support assembly, a first molding part, and a second molding part. The first molding part and the second molding part are used for injection molding the automotive grille. The support assembly is used for supporting and driving the first molding part and the second molding part. A recycling structure is arranged above the first molding part and the second molding part;

[0007] The recycling structure includes a first through hole opened at the top end of the second forming member. The first through hole is communicated with the inner cavity of the second forming member. A collecting shell is arranged above the first through hole. A sealing plate is arranged below the collecting shell. The sealing plate fits with the top ends of the first forming member and the second forming member. A second through hole is opened on the sealing plate. The second through hole is directly above the first through hole. A support rod is fixedly connected to the right side wall of the collecting shell. A gear is rotatably connected to the support rod. The gear meshes with a first rack bar. The first rack bar is slidably connected to the support rod. A first spring is fixedly connected between the first rack bar and the support rod. The first rack bar is fixedly connected with a push plate. The push plate is located inside the collecting shell and is slidably connected to the collecting shell. A scraping plate is arranged on the left side of the push plate. The scraping plate fits with the left side wall of the collecting shell and the right end of the scraping plate is fixedly connected to the push plate. A one-way bearing is fixedly connected to the rotating shaft of the gear. A toothed ring is fixedly connected to the outer sleeve of the one-way bearing. A second rack bar meshes with the toothed ring below. The second rack bar is located on the first forming member and can move along with the first forming member.

[0008] As a further solution of the present invention, the support group includes a base plate and a limiting rod. The limiting rod is fixedly connected to the first forming member. The base plate is located on the right side of the first forming member. The limiting rod is slidably connected to the base plate. A second spring is sleeved on the limiting rod. A first air cylinder is fixedly connected to the base plate. The first air cylinder is used to push the first forming member to move leftward. A second air cylinder is fixedly connected between the first forming member and the second forming member.

[0009] As a further solution of the present invention, the sealing plate is slidably connected to the collecting shell. The bottom end of the scraping plate is located inside the second through hole. The second through hole is slidably connected to the sealing plate. A non-return component is arranged on the right side of the sealing plate. The non-return component is used to drive the sealing plate to move along the collecting shell towards the direction of the scraping plate before the first air cylinder pushes the first forming member and the second forming member to move leftward.

[0010] As a further solution of the present invention, the non-return component includes a support rod and a driving rod. The driving rod is fixedly connected to the telescopic end of the first air cylinder. There is a certain distance between the driving rod and the first forming member. The bottom end of the support rod is rotatably connected to a slider. The slider is slidably connected inside the driving rod. A third spring is fixedly connected between the slider and the inner wall of the driving rod.

[0011] As a further solution of the present invention, a sealing group is arranged above the support rod;

[0012] The sealing group includes a fourth spring. The fourth spring is located directly below the support rod. The support rod is slidably connected to the base plate in the vertical direction. The fourth spring is fixedly connected above the base plate;

[0013] An adaptation group is arranged on the left side of the sealing group.

[0014] As a further solution of the present invention, the adaptation group includes a fifth spring and a T-shaped rod. The T-shaped rod is fixedly connected to the top of the first forming member. The T-shaped rod is slidably connected to the second rack bar in the vertical direction. The fifth spring is sleeved on the T-shaped rod and is fixedly connected between the T-shaped rod and the first forming member.

[0015] As a further solution of the present invention, two wing plates are fixedly connected to the sealing plate, and the two wing plates are respectively slidably connected to the inside of the collecting shell.

[0016] The present invention also provides an injection molding device for an automobile grille, which includes a waste recycling structure.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In the present invention, the collecting shell provided can collect and cool the fluid overflowing during the fluid injection process. Then, during the demolding process, the cooled waste is scraped off by the scraper. When the demolding of the mold inside the mold cavity is completed, during the resetting process of the first forming member and the second forming member, the cooled waste inside the collecting shell can be pushed out through the push plate, thereby completing the recycling of the waste, preventing the waste from forming on the first forming member and the second forming member, and reducing the cleaning difficulty and the resistance during mold opening.

[0019] 2. The movement of the sealing plate contacts the scraper to close the second through hole, thereby forming a seal for the collecting shell before the support rod and the collecting shell rise, enabling the fluid to be cooled inside the collecting shell. When the first forming member and the second forming member are reset, the collecting shell can be closely attached to the first forming member and the second forming member by the downward pull of the fourth spring on the support rod, thereby ensuring the sealing performance. Before the first forming member and the second forming member move synchronously to the left, the collecting shell will rise first to avoid friction affecting the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the connection relationship between the limiting rod and the first forming member of the present invention;

[0022] Figure 3 is Figure 2 a partial enlarged view of A in

[0023] Figure 4 is a schematic diagram of the connection relationship between the T-shaped rod and the first forming member of the present invention;

[0024] Figure 5Schematic diagram of the internal structure of the collection shell of the present invention;

[0025] Figure 6 Schematic diagram of the connection relationship between the wing plate and the sealing plate, and between the pushing plate and the scraping plate of the present invention;

[0026] Figure 7 Schematic diagram of the positional relationship between the support rod and the first rack bar, the second rack bar, and the T-shaped rod of the present invention;

[0027] Figure 8 is Figure 7 partial enlarged view at B in;

[0028] Figure 9 Schematic diagram of the connection relationship between the support rod and the sealing plate, and between the slider and the driving plate of the present invention.

[0029] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0030] 1. First forming member; 2. Second forming member; 3. First through hole; 4. Collection shell; 5. Sealing plate; 6. Second through hole; 7. Support rod; 8. Gear; 9. First rack bar; 10. Pushing plate; 11. Scraping plate; 12. First spring; 13. One-way bearing; 14. Tooth ring; 15. Second rack bar; 16. Substrate; 17. Limiting rod; 18. Second spring; 19. First cylinder; 20. Second cylinder; 21. Support rod; 22. Slider; 23. Third spring; 24. Fourth spring; 25. Fifth spring; 26. T-shaped rod; 27. Wing plate; 28. Driving rod. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. 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 scope of protection of the present invention.

[0032] Please refer to Figures 1-9 , the present invention provides a technical solution: an injection molding device for an automobile grille, the injection molding device includes a waste recycling structure; a waste recycling structure is also provided, including a support assembly, a first forming member 1 and a second forming member 2, the first forming member 1 and the second forming member 2 are used for injection molding the automobile grille, the support assembly is used for supporting and driving the first forming member 1 and the second forming member 2, and a recycling structure is arranged above the first forming member 1 and the second forming member;

[0033] The recycling structure includes a first through hole 3 opened at the top end of the second forming part 2. The first through hole 3 is communicated with the inner cavity of the second forming part 2. A collection shell 4 is arranged above the first through hole 3. A sealing plate 5 is arranged below the collection shell 4. The sealing plate 5 is attached to the top ends of the first forming part 1 and the second forming part 2. A second through hole 6 is opened on the sealing plate 5. The second through hole 6 is located directly above the first through hole 3. A support rod 7 is fixedly connected to the right side wall of the collection shell 4. A gear 8 is rotatably connected to the support rod 7. The gear 8 meshes with a first rack bar 9. The first rack bar 9 is slidably connected to the support rod 7. A first spring 12 is fixedly connected between the first rack bar 9 and the support rod 7. The first rack bar 9 is fixedly connected to a push plate 10. The push plate 10 is located inside the collection shell 4 and is slidably connected to the collection shell 4. A scraping plate 11 is arranged on the left side of the push plate 10. The scraping plate 11 is attached to the left side wall of the collection shell 4 and the right end of the scraping plate 11 is fixedly connected to the push plate 10. A one-way bearing 13 is fixedly connected to the rotating shaft of the gear 8. A toothed ring 14 is fixedly connected to the outer sleeve of the one-way bearing 13. A second rack bar 15 meshes with the toothed ring 14 below. The second rack bar 15 is located on the first forming part 1 and can move following the first forming part 1.

[0034] As a further solution of the present invention, the support group includes a base plate 16 and a limiting rod 17. The limiting rod 17 is fixedly connected to the first forming part 1. The base plate 16 is located on the right side of the first forming part 1. The limiting rod 17 is slidably connected to the base plate 16. A second spring 18 is sleeved on the limiting rod 17. A first cylinder 19 is fixedly connected to the base plate 16. The first cylinder 19 is used to push the first forming part 1 to move leftward. A second cylinder 20 is fixedly connected between the first forming part 1 and the second forming part 2.

[0035] As Figures 1-9 shown:

[0036] Supported by the base plate 16, then inject fluid into the first forming part 1 and the second forming part 2. During the injection process, the air inside the mold cavity will be discharged into the collection shell 4 through the first through hole 3 and the second through hole 6. After the air is discharged, the overflowing fluid will also enter the collection shell 4. After cooling is completed, demolding and waste recycling work can be carried out;

[0037] Demolding and waste recycling:

[0038] Then, start the first cylinder 19 to push the first forming part 1 and the second forming part 2 to move leftward as a whole. At this time, the limit rod 17 will slide along the substrate 16 and compress the second spring 18. During the movement, the flaky waste material cooled inside the collection shell 4 will be blocked by the side wall of the sealing plate 5, thus playing a role in scraping off, so that the waste material is temporarily stored inside the collection shell 4. After the first forming part 1 and the second forming part 2 move to the left side of the collection shell 4 as a whole, the second cylinder 20 can be started to make the second forming part 2 move relative to the first forming part 1, and demolding can be carried out;

[0039] During the process of the first forming part 1 and the second forming part 2 moving leftward as a whole, the second rack bar 15 will engage with the gear ring 14 and drive the outer sleeve of the one-way bearing 13 to rotate on the inner sleeve. At this time, the inner sleeve of the one-way bearing 13 will not rotate. When the outer sleeve and the gear ring 14 rotate, the first forming part 1 will move leftward. After demolding is completed, the first forming part 1 and the second forming part 2 can be reset;

[0040] The reset process of the first forming part 1 and the second forming part 2:

[0041] First, use the second cylinder 20 to reset the second forming part 2 to the first forming part 1, and then drive the first forming part 1 to reset by the shortening of the first cylinder 19. At this time, the limit rod 17 will slide along the substrate 16, and the second spring 18 will also gradually reset. When the second rack bar 15 on the first forming part 1 engages with the gear ring 14 again, the gear ring 14 will drive the outer sleeve and the inner sleeve of the one-way bearing 13 to rotate simultaneously. At this time, the one-way bearing 13 will drive the gear 8 to rotate. When the gear 8 rotates, it will engage with the first rack bar 9 and push the first rack bar 9 to slide leftward along the support rod 7. At this time, the first spring 12 will be gradually compressed, and the first rack bar 9 will push the push plate 10 to slide leftward along the collection shell 4. At this time, the push plate 10 will synchronously drive the scraping plate 11 to move leftward, thereby enabling the scraping plate 11 to release the blockage of the collection shell 4. During the movement of the push plate 10, it will push the solidified fluid inside the collection shell 4, enabling the waste material to move leftward through the collection shell 4 and be discharged, and then it can be recycled;

[0042] When the first forming part 1 and the second forming part 2 are reset to the initial position, the second rack bar 15 will move to the right side of the gear ring 14 and disengage from the gear ring 14. At this time, under the action of the first spring 12, it will drive the first rack bar 9, the push plate 10 and the scraping plate 11 to reset to the initial position, and then fluid can be injected again;

[0043] In the present invention, the collecting shell 4 is provided to collect and cool the fluid overflowing during the fluid injection process. Then, during the demolding process, the cooled waste is scraped off by the scraper 11. When the demolding of the mold inside the mold cavity is completed, during the resetting process of the first forming member 1 and the second forming member 2, the cooled waste inside the collecting shell 4 can be pushed out by the push plate 10, thereby completing the recycling of the waste, preventing the waste from forming on the first forming member 1 and the second forming member 2, and reducing the cleaning difficulty and the resistance during mold opening.

[0044] As a further aspect of the present invention, the sealing plate 5 is slidably connected to the collecting shell 4. The bottom end of the scraper 11 is located inside the second through hole 6, and the second through hole 6 is slidably connected to the sealing plate 5. A non-return assembly is provided on the right side of the sealing plate 5, and the non-return assembly is used to drive the sealing plate 5 to move along the collecting shell 4 towards the scraper 11 before the first cylinder 19 pushes the first forming member 1 and the second forming member 2 to move leftward.

[0045] As a further aspect of the present invention, the non-return assembly includes a support rod 21 and a driving rod 28. The driving rod 28 is fixedly connected to the telescopic end of the first cylinder 19, and there is a certain distance between the driving rod 28 and the first forming member 1. The bottom end of the support rod 21 is rotatably connected to a slider 22, the slider 22 is slidably connected inside the driving rod 28, and a third spring 23 is fixedly connected between the slider 22 and the inner wall of the driving rod 28.

[0046] As a further aspect of the present invention, a sealing group is provided above the support rod 21;

[0047] The sealing group includes a fourth spring 24. The fourth spring 24 is located directly below the support rod 7. The support rod 7 is slidably connected to the base plate 16 in the vertical direction, and the fourth spring 24 is fixedly connected above the base plate 16;

[0048] An adaptation group is provided on the left side of the sealing group.

[0049] As a further aspect of the present invention, the adaptation group includes a fifth spring 25 and a T-shaped rod 26. The T-shaped rod 26 is fixedly connected to the top end of the first forming member 1. The T-shaped rod 26 is slidably connected to the second rack bar 15 in the vertical direction, and the fifth spring 25 is sleeved on the T-shaped rod 26 and is fixedly connected between the T-shaped rod 26 and the first forming member 1.

[0050] As Figures 3-5 、 Figures 7-9 shown:

[0051] There is a certain distance between the driving rod 28 and the side wall of the first forming member 1. At this time, the gear ring 14 is pressing down the second rack bar 15, that is, the fifth spring 25 is compressed;

[0052] After the fluid injection is completed, the first cylinder 19 can be directly activated to push the drive rod 28 to move leftward. Before the drive rod 28 contacts the first forming member 1, the drive rod 28 will first push the support rod 21 to move through the third spring 23 and the slider 22. The support rod 21 is inclined, so it will push the sealing plate 5 to slide leftward along the collecting shell 4 during the movement. The second rack bar 15 will also move along the gear ring 14 and drive the outer sleeve of the gear ring 14 and the one-way bearing 13 to rotate on the inner sleeve. At this time, the second through hole 6 on the sealing plate 5 will gradually slide towards the scraping plate 11 and gradually seal the second through hole 6, isolating the first through hole 3 from the second through hole 6. The fluid will be temporarily stored inside the collecting shell 4. When the second through hole 6 is completely sealed, the sealing plate 5 cannot move further. At this time, the continuous movement of the support rod 21 will apply an upward force to the sealing plate 5 through the support rod 21. At this time, the sealing plate 5 will lift the collecting shell 4 and the support rod 7. The support rod 7 will slide upward along the base plate 16 and stretch the fourth spring 24. At this time, the support rod 7 will rise relative to the first forming member 1 and the second forming member 2. At this time, the collecting shell 4 will rise. At this time, the second rack bar 15 will also disengage from the gear ring 14. At this time, the second rack bar 15 will rise under the elastic relaxation of the fifth spring 25. Then, after the drive rod 28 moves a fixed length, it will contact the first forming member 1 and push the first forming member 1 and the second forming member 2 as a whole to move to the left. The elastic relaxation of the third spring 23 can keep the support rod 7 in the rising state. After cooling is completed, the second cylinder 20 extends to drive the second forming member 2 to move, and then demolding is carried out;

[0053] The movement of the sealing plate 5 contacts the scraping plate 11 to close the second through hole 6, and then seals the collecting shell 4 before the support rod 7 and the collecting shell 4 rise, so that the fluid is cooled inside the collecting shell 4;

[0054] After demolding is completed, first make the second forming member 2 fit with the first forming member 1, and then the first cylinder 19 shortens. Under the action of the second spring 18, the first forming member 1 will gradually return to its original position. During the return process, the second rack bar 15 will engage with the gear ring 14 and drive the one-way bearing 13 to rotate, so that the push plate 10 can push out the fertilizer. When the first forming member 1 and the second forming member 2 return to their original positions, the first cylinder 19 has not completely shortened, but will continue to shorten. At this time, the third spring 23 is no longer compressed, but follows the return of the drive rod 28 to make the support rod 7 and the sealing plate 5 return to their initial positions respectively. At this time, the collecting shell 4 will descend linearly and pull down the support rod 7 through the fourth spring 24 so that the collecting shell 4 can closely adhere to the first forming member 1 and the second forming member 2, thereby ensuring the sealing performance.

[0055] As a further solution of the present invention, two wing plates 27 are fixedly connected to the sealing plate 5, and the two wing plates 27 are respectively slidably connected to the inside of the collecting shell 4.

[0056] As Figure 5 and Figure 6 shown below:

[0057] The sealing performance between the sealing plate 5 and the collecting housing 4 can be ensured by means of the wing plate 27.

[0058] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0059] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste recycling structure, comprising a support assembly, a first forming member (1) and a second forming member (2), wherein the first forming member (1) and the second forming member (2) are used for injection molding of an automotive grille, and the support assembly is used for supporting and driving the first forming member (1) and the second forming member (2), and is characterized in that: A recycling structure is provided above the first forming member (1) and the second forming member (2); The recycling structure includes a first through hole (3) opened at the top end of the second forming member (2). The first through hole (3) communicates with the inner cavity of the second forming member (2). A collecting shell (4) is provided above the first through hole (3). A sealing plate (5) is provided below the collecting shell (4). The sealing plate (5) is attached to the top ends of the first forming member (1) and the second forming member (2). A second through hole (6) is opened on the sealing plate (5). The second through hole (6) is located directly above the first through hole (3). A support rod (7) is fixedly connected to the right side wall of the collecting shell (4). A gear (8) is rotatably connected to the support rod (7). The gear (8) meshes with a first rack bar (9). The first rack bar (9) is slidably connected to the support rod (7). A first spring (12) is fixedly connected between the first rack bar (9) and the support rod (7). The first rack bar (9) is fixedly connected to a push plate (10). The push plate (10) is located inside the collecting shell (4) and is slidably connected to the collecting shell (4). A scraping plate (11) is provided on the left side of the push plate (10). The scraping plate (11) is attached to the left side wall of the collecting shell (4) and the right end of the scraping plate (11) is fixedly connected to the push plate (10). A one-way bearing (13) is fixedly connected to the rotating shaft of the gear (8). A toothed ring (14) is fixedly connected to the outer sleeve of the one-way bearing (13). A second rack bar (15) meshes with the toothed ring (14) below. The second rack bar (15) is located on the first forming member (1) and can move along with the first forming member (1); During the process of the overall leftward movement of the first forming member (1) and the second forming member (2), the waste material cooled inside the collecting shell (4) will be blocked by the side wall of the sealing plate (5) and thus play a role in scraping off. When the first forming member (1) and the second forming member (2) are reset, the one-way bearing (13) starts to work. The first rack bar (9) is driven by the gear (8) to slide leftward along the support rod (7), so that the push plate (10) moves leftward, pushing the fluid solidified inside the collecting shell (4), enabling the waste material to move leftward through the collecting shell (4) and be discharged.

2. The waste recycling structure according to claim 1, characterized in that: The support assembly includes a substrate (16) and a limiting rod (17). The limiting rod (17) is fixedly connected to the first forming member (1). The substrate (16) is located on the right side of the first forming member (1). The limiting rod (17) is slidably connected to the substrate (16). A second spring (18) is sleeved on the limiting rod (17). A first air cylinder (19) is fixedly connected to the substrate (16). The first air cylinder (19) is used to push the first forming member (1) to move leftward. A second air cylinder (20) is fixedly connected between the first forming member (1) and the second forming member (2).

3. A waste recycling structure according to claim 2, wherein: The sealing plate (5) is slidably connected to the collection shell (4). The bottom end of the scraping plate (11) is located inside the second through hole (6). The second through hole (6) is slidably connected to the sealing plate (5). A non-backflow assembly is arranged on the right side of the sealing plate (5). The non-backflow assembly is used to drive the sealing plate (5) to move along the collection shell (4) towards the scraping plate (11) before the first cylinder (19) pushes the first forming member (1) and the second forming member (2) to move leftward.

4. A waste recycling structure according to claim 3, characterized in that: The non-backflow assembly includes a support rod (21) and a driving rod (28). The driving rod (28) is fixedly connected to the telescopic end of the first cylinder (19). There is a certain distance between the driving rod (28) and the first forming member (1). The bottom end of the support rod (21) is rotatably connected to a slider (22). The slider (22) is slidably connected inside the driving rod (28). A third spring (23) is fixedly connected between the slider (22) and the inner wall of the driving rod (28).

5. The waste recycling structure according to claim 4, characterized in that: A sealing group is arranged above the support rod (21); The sealing group includes a fourth spring (24). The fourth spring (24) is located directly below the support rod (7). The support rod (7) is slidably connected to the substrate (16) in the vertical direction. The fourth spring (24) is fixedly connected above the substrate (16); An adaptation group is arranged on the left side of the sealing group.

6. A waste recycling structure according to claim 5, characterized in that: The adaptation group includes a fifth spring (25) and a T-shaped rod (26). The T-shaped rod (26) is fixedly connected to the top end of the first forming member (1). The T-shaped rod (26) is slidably connected to the second rack bar (15) in the vertical direction. The fifth spring (25) is sleeved on the T-shaped rod (26) and is fixedly connected between the T-shaped rod (26) and the first forming member (1).

7. A waste recycling structure according to claim 3, characterized in that: Two wing plates (27) are fixedly connected to the sealing plate (5). The two wing plates (27) are respectively slidably connected to the inside of the collection shell (4).

8. An injection molding device for an automobile grille, characterized in that, It includes the waste recycling structure according to any one of claims 1-7.

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