Carrying device and material production line
By designing a transport device with a simple structure, using the combination of the main body, the transport mechanism and the drive mechanism, the problem of low handling efficiency in the prior art is solved, and the rapid handling and efficiency improvement of materials are achieved.
Patent Information
- Application Number
- CN202421498687.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing handling robot has complex structure and low handling efficiency, requiring more operational steps.
A simple structure handling device is designed, including a main body, a handling mechanism and a driving mechanism. A plurality of guide portions in a position and a closed ring shape are provided on the main body, and the transport mechanism is movably connected to the guide portion, and the driving mechanism is driven to be connected to the transport mechanism, so that it can be moved in the first direction and the second direction along the main body.
By simplifying the structure and reducing operating steps, rapid material handling is achieved and handling efficiency is improved.
Smart Images

Figure CN222934587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material handling, in particular to a handling device and a material production line. Background Art
[0002] In the production and processing of some materials, such as in the production and processing of hardware structural parts, in order to improve production capacity and efficiency, more efficient handling mechanisms are often used to replace manual handling. Among the related technologies, the handling mechanism most commonly used is a handling manipulator. Usually, it is necessary to use the handling manipulator to clamp the product, then lift it, servo-move it, then lower it to release the clamp, and finally lift it back to the original position to complete the entire handling process.
[0003] The above-mentioned handling manipulator not only has a relatively complex structure, but also obviously requires more operation steps in the entire handling process, resulting in low handling efficiency. Summary of the Utility Model
[0004] Based on this, in view of the above problems, it is necessary to propose a handling device and a material production line with a simple structure and high handling efficiency.
[0005] An embodiment of the utility model provides a handling device, including:
[0006] A main body, the main body includes a plurality of placement positions for placing materials arranged at intervals in a first direction, and a guiding part arranged in a closed ring structure;
[0007] A handling mechanism, the handling mechanism is movably connected to the guiding part; and
[0008] A driving mechanism, arranged on the main body and drivingly connected to the handling mechanism to drive the handling mechanism to move in the first direction and / or a second direction perpendicular to the first direction.
[0009] In some embodiments, the handling mechanism includes a lifting member and a lifting positioning member, the driving mechanism includes a link rod rotatably arranged, the lifting member is movably connected to the link rod, the lifting positioning member is fixedly connected to the lifting member, and the lifting fixing member has a first positioning groove for placing materials.
[0010] In some embodiments, a connection mechanism is arranged between the lifting member and the link rod, the connection mechanism includes a connecting member, a connecting shaft and a rolling member connected in sequence, the rolling member is rotatably connected to the connecting shaft, the connecting member is connected to the lifting member, the link rod is provided with a sliding groove along its length direction, the connecting shaft is arranged in the sliding groove, and the rolling member is movably connected to the guiding part.
[0011] In some embodiments, a convex plate is provided on the main body, and a guiding groove is formed on the end face of the convex plate facing away from the main body. The guiding groove has two relatively arranged first guiding segments and two relatively arranged second guiding segments, and the two first guiding segments and the two second guiding segments are communicated with each other to form the guiding portion.
[0012] In some embodiments, the first guiding segment is a linear structure, or the first guiding segment is an arc-shaped structure, or the first guiding segment is a "V"-shaped structure.
[0013] In some embodiments, the lifting and positioning member includes two spaced-apart handling portions and a connecting portion connected between the two handling portions. The connecting portion and the two handling portions are connected to form an integral body, and the first positioning grooves are provided at the positions where the two handling portions face each other.
[0014] In some embodiments, a guiding structure is further provided on the main body. The guiding structure includes a first guide rail arranged along a first direction and a first slider movable on the first guide rail. The guiding structure further includes a second guide rail connected to the first slider and a second slider movable on the second guide rail. The handling mechanism is connected to the second slider.
[0015] In some embodiments, the driving mechanism has two link rods that can rotate simultaneously. The two link rods are located on opposite sides of the main body, and the included angle between the two link rods is 180°. The handling mechanisms are provided on both sides of the main body corresponding to the two link rods, and the two handling mechanisms are respectively movably connected to the corresponding link rods.
[0016] In some embodiments, the driving mechanism further includes a driving member. The driving member has a driving shaft that rotates around an axis, and the link rod is connected to the driving shaft.
[0017] An embodiment of the present invention further provides a material production line, including the above-mentioned handling device.
[0018] Adopting the embodiment of the present invention has the following beneficial effects:
[0019] According to the handling device and material production line in the above-mentioned embodiments, by setting a handling mechanism, the handling mechanism can move along the main body in the first direction and the second direction, and when the handling mechanism moves along the first direction and the second direction, it has a handling path relative to the main body, and by setting a driving mechanism, the driving mechanism is connected to the handling mechanism, and the driving mechanism can drive the handling mechanism to move in the first direction and / or the second direction. During the movement of the handling mechanism, the handling mechanism can lift the material located at the placement position along the second direction to leave the placement position, and can also transport the lifted material to the adjacent placement position along the first direction. In this way, the handling of materials can be achieved only by driving the handling mechanism with the driving mechanism. Not only is the structure simple, but also the handling requires fewer operation steps, which can achieve rapid material handling and improve handling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0021] in:
[0022] Figure 1 An exploded view of the handling device provided by the utility model is shown;
[0023] Figure 2 A side view of the transport device provided according to the utility model is shown;
[0024] Figure 3 Shows a front view of the main body provided according to the utility model;
[0025] Figure 4 A top view of the transport device provided according to the utility model is shown.
[0026] Description of main component symbols:
[0027] 1. Main body; 11. Guide part; 111. Protruding plate; 112. Guide groove; 1121. First guide section; 1122. Second guide section; 12. Positioning fixture; 121. Second positioning groove; 2. Driving mechanism; 21. Driving member; 22. Connecting rod; 221. Slide groove; 3. Transporting mechanism; 31. Lifting member; 32. Lifting positioning member; 321. Connecting part; 322. Transporting part; 3221. First positioning groove; 4. Connecting mechanism; 41. Connecting member; 42. Rolling member; 43. Connecting shaft; 5. Guide mechanism; 51. First guide rail; 52. First slider; 53. Second guide rail; 54. Second slider. Detailed implementation mode
[0028] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are shown in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present utility model more thorough and comprehensive.
[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0031] On the one hand, the present utility model provides a handling device. In one embodiment, please refer to Figure 1 and Figure 2 , the handling device includes a main body 1, a driving mechanism 2 and a handling mechanism 3. Among them, the main body 1 is the overall structure of the handling device, which can not only provide an installation environment for other structures, but also has a plurality of placement positions for placing materials arranged at intervals along the first direction to provide a supporting effect for the materials. And a guiding part 11 is also arranged on the main body 1, and the guiding part 11 has a closed loop structure.
[0032] The handling mechanism 3 can move relative to the main body 1 along the first direction and the second direction perpendicular to the first direction. Please refer to Figure 1 , in the figure, the direction of the X axis is parallel to the first direction, and the direction of the Z axis is parallel to the second direction.
[0033] It should be noted that the handling mechanism 3 can move alone in the first direction, or can move alone in the second direction, or can move both along the first direction and along the second direction.
[0034] The conveying mechanism 3 is movably connected to the guiding portion 11. By setting the extending path of the guiding portion 11, the moving path of the conveying mechanism 3 can be defined. When the conveying mechanism 3 moves in the first direction and the second direction simultaneously, the guiding portion 11 can define at least a conveying path for the conveying mechanism 3 relative to the main body 1 to transfer the material from one placement position to another placement position.
[0035] The driving mechanism 2 is disposed on the main body 1. The driving mechanism 2 can be drivingly connected to the conveying mechanism 3 so as to drive the conveying mechanism 3 to move in the first direction and / or the second direction perpendicular to the first direction.
[0036] By setting the conveying mechanism 3, the conveying mechanism 3 can move along the main body 1 in the first direction and the second direction. And by movably connecting the conveying mechanism 3 to the guiding portion 11, when the conveying mechanism 3 moves in the first direction and the second direction, it has a conveying path relative to the main body 1. Also, by setting the driving mechanism 2, the driving mechanism 2 is drivingly connected to the conveying mechanism 3, and the driving mechanism 2 can drive the conveying mechanism 3 to move in the first direction and / or the second direction. During the movement of the conveying mechanism 3, the conveying mechanism 3 can both lift the material located at the placement position away from the placement position along the second direction and transport the lifted material to the adjacent placement position along the first direction. In this way, only by driving the conveying mechanism 3 with the driving mechanism 2 can the material be conveyed. It not only has a simple structure, but also requires fewer operating steps for conveying, can realize the rapid conveying work of the material, and improve the conveying efficiency.
[0037] In one embodiment, please refer to Figure 1 and Figure 2 , the conveying mechanism 3 includes a lifting member 31 and a lifting positioning member 32. The driving mechanism 2 has a connecting rod 22 rotatably disposed on the main body 1. The lifting member 31 is movably connected to the connecting rod 22. The lifting positioning member 32 is fixedly connected to the lifting member 31. The lifting fixing member has a first positioning groove 3221 for placing the material. When the lifting positioning member 32 moves along the conveying path, the material can be positioned in the first positioning groove 3221. By setting the lifting member 31, the whole conveying mechanism 3 can be movably connected to the connecting rod 22, and the lifting member 31 can also be movably connected to the main body 1, so that the conveying mechanism 3 can move relative to the main body 1 in the first direction and the second direction. By setting the lifting positioning member 32, the material can be lifted and moved, so that the material can move away from its placement position and move to the adjacent placement position.
[0038] The transport mechanism 3 is movably connected to the connecting rod 22. When the connecting rod 22 rotates, the transport mechanism 3 can be driven to move along the transport path. When the transport mechanism 3 moves along the transport path, it can move in the second direction to lift the material in the placement position, and can move in the first direction to move the lifted material to the adjacent placement position. During the rotation of the connecting rod 22, the transport mechanism 3 can be driven to cycle between leaving the transport path and the transport path, so as to cyclically transport the material.
[0039] Specifically, in a specific embodiment, a connection mechanism 4 is provided between the lifting member 31 and the connecting rod 22, and the connection mechanism 4 includes a connecting member 41, a connecting shaft 43, and a rolling member 42 connected in sequence, one end of the connecting shaft 43 is fixedly connected to the connecting member 41, and the rolling member 42 is rotatably connected to the other end of the connecting shaft 43. The end of the connecting member 41 away from the connecting shaft 43 is fixedly connected to the lifting member 31, and the connecting rod 22 is penetrated by a sliding groove 221 along its length direction, the length direction of the connecting rod 22 is perpendicular to the rotation axis of the connecting rod 22, and the direction of the connecting shaft 43 is preferably parallel to the third direction (please refer to Figure 1 , the third direction of the present application is parallel to the Y-axis), the connecting shaft 43 is passed through the slide groove 221, the rolling member 42 and the connecting member 41 clamp the connecting rod 22 in the middle, and the connecting shaft 43 can move along the path of the slide groove 221.
[0040] It is worth mentioning that the rolling member 42 is movably connected in the guide portion 11. When the connecting rod 22 rotates, it can drive the connecting shaft 43 to move therewith, and can drive the rolling member 42 to move therewith. The rolling member 42 is restricted by the guide portion 11, so that the rolling member 42 can only move along the extension path of the guide portion 11. When the rolling member 42 moves along the guide portion 11, it can drive the connecting shaft 43 to move in the slide groove 221, and can drive the entire conveying mechanism 3 to move in the first direction and the second direction.
[0041] Specifically, a convex plate 111 is convexly provided on the main body 1, and a guide groove 112 is formed on the end surface of the convex plate 111 facing away from the main body 1. The guide groove 112 has two oppositely arranged first guide sections 1121 and two oppositely arranged second guide sections 1122. The two first guide sections 1121 and the two second guide sections 1122 are interconnected to form a closed annular groove, and the annular groove forms the guide portion 11.
[0042] For details, please see Figure 2 In a preferred embodiment, the first guide section 1121 and the second guide section 1122 are both straight segments, and the two ends of the first guide section 1121 are respectively connected to the ends of the two adjacent second guide sections 1122, and the connecting point of the first guide section 1121 and the second guide section 1122 is preferably set to an arc. The path of the first guide section 1121 is preferably parallel to the first direction, and the path of the second guide section 1122 is preferably parallel to the second direction, so that the annular groove is set in a rectangular shape as a whole.
[0043] Taking Figure 2 as an example, the process of conveying materials is described. In the figure, the connecting rod 22 is parallel to the first direction, and the rolling member 42 is located at the central position of the second guiding section 1122 on the right. At this time, the conveying mechanism 3 is at the starting point. When materials need to be conveyed, the driving connecting rod 22 rotates clockwise. At this time, the connecting rod 22 drives the lifting member 31 and the lifting fixing member to move away from the materials in the second direction, but does not move in the first direction. When the rolling member 42 moves to the first guiding section 1121 located below, the lifting member 31 and the lifting fixing member will not continue to move in the second direction, but move in the first direction.
[0044] When the rolling member 42 moves to the second guiding section 1122 on the left and continues to move, the lifting member 31 and the lifting fixing member move towards the materials in the second direction again, and do not move in the first direction. When the rolling member 42 moves to the central position of the second guiding section 1122 on the left, the lifting fixing member just contacts the materials. When the connecting rod 22 continues to rotate, the lifting fixing member can lift the materials from the placement position along the second direction until the rolling member 42 enters the first guiding section 1121 located above. At this time, when the rolling member 42 moves along the upper first guiding section 1121, the lifting fixing member moves in the upper part of the second direction, but in the first direction, the lifting fixing member drives the materials to move towards the right side of the main body 1 to move the materials by one placement position.
[0045] When the rolling member 42 moves to the connection point between the upper first guiding section 1121 and the second guiding section 1122 on the right, the materials are just located on the extension line of another placement position in the second direction. At this time, the connecting rod 22 continues to rotate clockwise, driving the rolling member 42 to move along the second guiding section 1122 on the right to drive the lifting member 31 and the lifting fixing member to descend along the second direction to place the materials on the placement position. When the rolling member 42 returns to the central position of the second guiding section 1122 on the right again and restores to the original position, one-time conveyance of the materials is realized. Only by driving the connecting rod 22 to rotate continuously clockwise can the materials be continuously conveyed.
[0046] It should be noted here that when the rolling member 42 moves to the central position of the second guiding section 1122 on the left, the contact position between the lifting fixing member and the materials is the starting point of the conveying path, and when the rolling member 42 returns to the central position of the second guiding section 1122 on the right again is the end point of the conveying path. The starting point and the end point in the following text are also the starting point and the end point mentioned here. The path between the starting point position and the end point position is the conveying path.
[0047] It should be noted that in some other embodiments, the first guiding section 1121 is not necessarily a straight line segment. For example, in Figure 3In the structure shown in (a), the first guiding section 1121 can also be an arc-shaped structure, or in Figure 3 In the structure shown in (b), the first guiding section 1121 can also be a V-shaped structure.
[0048] In one embodiment, the lifting and positioning member 32 mainly includes two spaced-apart carrying portions 322 and a connecting portion 321 connected between the two carrying portions 322. The connecting portion 321 and the two carrying portions 322 are connected to form an integral body. First positioning grooves 3221 are provided at the positions where the two carrying portions 322 face each other. The two carrying portions 322 are arranged in parallel, and the end of the lifting member 31 is fixedly connected to one of the carrying portions 322. When the lifting member 31 and the lifting fixing member are in the initial position, the first positioning grooves 3221 and the placement positions are both on a straight line parallel to the third direction.
[0049] In one embodiment, a guiding mechanism 5 is further provided on the main body 1. The guiding mechanism 5 includes a first guide rail 51 and a first slider 52 movable on the first guide rail 51. The guiding mechanism 5 further includes a second guide rail 53 connected to the first slider 52 and a second slider 54 movable on the second guide rail 53. The first guide rail 51 is arranged on the main body 1 along the first direction, and the handling mechanism 3 is connected to the second slider 54. Specifically, the lifting member 31 is fixedly connected to the second slider 54. By providing the combination of the first guide rail 51 and the first slider 52, the handling mechanism 3 can be moved along the first direction on the main body 1. By providing the combination of the second guide rail 53 and the second slider 54, the handling mechanism 3 can be moved relative to the main body 1 along the second direction.
[0050] In a preferred embodiment, please refer to Figure 4 together. The driving mechanism 2 has two link rods 22 that can rotate simultaneously. The two link rods 22 are located on opposite sides of the main body 1, and the included angle between the two link rods 22 is 180°. Handling mechanisms 3 are provided on both sides of the main body 1 corresponding to the two link rods 22, and the two handling mechanisms 3 are respectively movably connected to the corresponding link rods 22. It is worth mentioning that the two link rods 22 can be fixedly connected by a connecting rod, or the two link rods 22 are integrally formed, depending on the actual situation, and are not limited herein.
[0051] That is to say, two handling mechanisms 3 are connected to the main body 1, and two connecting rods 22 corresponding to the handling mechanisms 3 are arranged on the main body 1. The two connecting rods 22 can respectively drive the corresponding handling mechanisms 3 to move. The included angle between the two connecting rods 22 is 180°, and the two connecting rods 22 are driven by the same driving mechanism 2, so the two connecting rods 22 rotate synchronously. The two connecting rods 22 can be parallel to the first direction at the same time. When the positions of the two connecting rods 22 are parallel to the first reverse direction, there must be a handling mechanism 3 connected to one connecting rod 22 in the initial position (handling end point), and the handling mechanism 3 connected to the other connecting rod 22 is in the position just contacting the material (i.e., handling starting point).
[0052] When the driving connecting rod 22 rotates clockwise, it can drive the two handling mechanisms 3 to move at the same time. The handling mechanism 3 in the initial position can move to the handling starting point, and the handling mechanism 3 that was initially at the handling starting point can move to the handling end point, realizing the handling of the material. By arranging two connecting rods 22 and two handling mechanisms 3, when the connecting rod 22 rotates one circle, it can drive the two handling mechanisms 3 to respectively complete one handling of the material, that is, when the connecting rod 22 rotates one circle, two handling operations can be realized, further improving the handling efficiency.
[0053] In addition, the driving mechanism 2 further includes a driving member 21. The driving member 21 is preferably a motor. The driving member 21 has a driving shaft that rotates around an axis. The rotation axis of the driving shaft is parallel to the third direction, and the connecting rod 22 is connected to the driving shaft. When there are two connecting rods 22, the driving shaft penetrates through the main body 1 so that the driving shaft can penetrate through the main body 1 and be located at both ends of the main body 1.
[0054] In one embodiment, the main body 1 further includes two positioning and fixing members 12 arranged at intervals. The positioning and fixing members 12 extend along the first direction, and a plurality of second positioning grooves 121 are arranged at intervals along the first direction on the positioning and fixing members 12. The second positioning grooves 121 on the two positioning and fixing members 12 are arranged in one-to-one correspondence, and a placement position is formed between the second positioning grooves 121 on the two positioning and fixing members 12 that face each other.
[0055] On the other hand, the present invention also provides a material production line, which can be used for producing materials such as battery structures, including the above-mentioned handling device. The handling device is used to transport the materials to be produced to each production station for operations such as photographing and detecting.
[0056] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should be considered to be within the scope described in this specification.
[0057] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.
Claims
1. A transport device, characterized in that: include: A main body (1), the main body (1) comprising a plurality of placement positions for placing materials arranged at intervals along a first direction, and a guide portion (11) arranged in a closed ring structure; A transport mechanism (3), the transport mechanism (3) being movably connected to the guide portion (11) and used for transferring the material from one placement position to another placement position; and A driving mechanism (2) is arranged on the main body (1) and is drivingly connected to the transport mechanism (3) so as to drive the transport mechanism (3) to move along a first direction and / or a second direction perpendicular to the first direction.
2. The transport device according to claim 1, characterized in that: The transport mechanism (3) comprises a lifting member (31) and a lifting positioning member (32), the driving mechanism (2) comprises a connecting rod (22) rotatably arranged on the main body (1), the lifting member (31) is movably connected to the connecting rod (22), the lifting positioning member (32) is fixedly connected to the lifting member (31), and the lifting positioning member (32) has a first positioning groove (3221) for placing materials.
3. The transport device according to claim 2, characterized in that: A connecting mechanism (4) is provided between the lifting member (31) and the connecting rod (22), and the connecting mechanism (4) comprises a connecting member (41), a connecting shaft (43) and a rolling member (42) which are connected in sequence, the rolling member (42) is rotatably connected to the connecting shaft (43), the connecting member (41) is connected to the lifting member (31), a sliding groove (221) passes through the connecting rod (22) along its length direction, the connecting shaft (43) is inserted into the sliding groove (221), and the rolling member (42) is movably connected to the guiding portion (11).
4. The transport device according to claim 3, characterized in that: A convex plate (111) is convexly provided on the main body (1); a guide groove (112) is provided on the end surface of the convex plate (111) facing away from the main body (1); the guide groove (112) has two first guide sections (1121) arranged opposite to each other and two second guide sections (1122) arranged opposite to each other; the two first guide sections (1121) and the two second guide sections (1122) are connected to each other to form the guide portion (11).
5. The transport device according to claim 4, characterized in that: The first guiding section (1121) is a straight-line structure, or the first guiding section (1121) is an arc-shaped structure, or the first guiding section (1121) is a "V"-shaped structure.
6. The transport device according to claim 2, characterized in that: The lifting positioning member (32) comprises two transporting parts (322) arranged at intervals and a connecting part (321) connected between the two transporting parts (322); the connecting part (321) and the two transporting parts (322) are connected to form a whole; and the first positioning groove (3221) is provided at positions directly opposite to the two transporting parts (322).
7. The transport device according to claim 1, characterized in that: The main body (1) is also provided with a guide structure, the guide structure comprising a first guide rail (51) arranged along a first direction and a first slider (52) movable on the first guide rail (51), the guide structure also comprising a second guide rail (53) connected to the first slider (52) and a second slider (54) movable on the second guide rail (53), and the transport mechanism (3) is connected to the second slider (54).
8. The transport device according to any one of claims 2 to 7, characterized in that: The driving mechanism (2) has two connecting rods (22) that can rotate simultaneously. The two connecting rods (22) are located on opposite sides of the main body (1). The angle between the two connecting rods (22) is 180°. The conveying mechanisms (3) are arranged on both sides of the main body (1) corresponding to the two connecting rods (22). The two conveying mechanisms (3) are respectively movably connected to the corresponding connecting rods (22).
9. The transport device according to claim 8, characterized in that: The driving mechanism (2) further comprises a driving member (21), wherein the driving member (21) has a driving shaft that rotates around an axis, and the connecting rod (22) is connected to the driving shaft.
10. A material production line, characterized in that: Comprising the handling device according to any one of claims 1 to 9.