Coupler accessory sorting and assembling equipment
By designing coupling accessories sorting and assembly equipment, and using visual sensors and pneumatic jaws and other technologies, automated screening and assembly are achieved, solving the problem of assembly of plum-shaped couplings, ensuring accuracy and safety, and improving production efficiency.
Patent Information
- Application Number
- CN202421104034.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The assembly of plum-shaped couplings is difficult to automate, and manual assembly has problems of damaging the elastomer and creating back gaps, and the prior art cannot effectively solve the problem of inappropriate tolerance of the elastomer.
A coupling accessories sorting and assembly equipment is designed, including a pressing unit, an elastomeric sorting unit, a storage unit, a conveying unit, a claw disc positioning unit, a locking screw unit and a finished product conveying unit, through visual sensors and pneumatic jaws and the moving mechanism realize automated screening, storage, conveying and assembly to ensure accuracy and safety.
Automatic sorting and assembly of coupling accessories is realized, manual operation is reduced, installation accuracy is ensured, elastomer damage and backlash problems are avoided, and production efficiency and wear resistance of the equipment are improved.
Smart Images

Figure CN222307960U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of couplings, and in particular relates to coupling accessories sorting and assembling equipment. Background Art
[0002] With the advancement of science and technology and the development of industrial level, more and more industrial products are widely used in various equipment. As one of the most widely used products, couplings have a wide range of application needs. As a widely used product among couplings, plum blossom couplings have a relatively simple structure, excellent performance, and a large number of applications. Plum blossom couplings are mainly composed of two metal claws and an elastomer. The metal claws are generally made of 45 steel or aluminum alloy. The elastomers are divided into many types according to their hardness. The elastomers are used in the middle of the coupling to play the role of shock absorption, insulation, and buffering torque transmission. The higher the hardness, the greater the torque transmitted. The integrity of the elastomer determines the service life of the plum blossom coupling. In order to meet the backlash-free characteristics of the coupling, the elastomer and the metal claw are interference fit. The processing method of the elastomer is mostly injection molding. Its external dimensions are different due to the physical properties of the elastomer and the tolerance of the mold.
[0003] At present, the plum blossom coupling is assembled manually, which is difficult to assemble. If the tolerance of the elastomer is too large, the elastomer is easily damaged during installation. If the tolerance of the elastomer is too small, the backlash is too large when the finished product is used. Utility Model Content
[0004] In order to solve the above technical problems, the utility model further provides a coupling accessories sorting and assembling device.
[0005] The specific technical scheme of the utility model is as follows: a coupling parts sorting and assembling device, comprising:
[0006] A press-fit unit, which is mounted on the base and is used to press-fit the assembled coupling;
[0007] An elastomer sorting unit, wherein the elastomer sorting component is mounted on the base and is used to screen elastomers that meet the standards;
[0008] an elastomer storage unit, the elastomer storage unit being mounted on the base and used for storing elastomers meeting the standards;
[0009] an elastic body conveying unit, the elastic body conveying unit being mounted on the base and used for conveying the elastic body from the elastic body storage unit to the pressing unit;
[0010] A claw plate positioning unit, the claw plate positioning unit is mounted on the base and is used to carry two claw plates of the coupling;
[0011] A screw locking unit, which is mounted on the base and is used to feed the screw into the bolt hole of the claw plate and perform pre-tightening;
[0012] A claw plate conveying unit, the claw plate conveying unit is installed on the base and is used to convey the claw plate to the pressing unit;
[0013] A finished product conveying unit is installed on the base and is used to take out and collect the assembled couplings.
[0014] Furthermore, the elastomer sorting unit includes: an elastomer feeding conveyor belt, an elastomer feeding conveyor belt is arranged on one side of the base, a visual sensor for obtaining elastomer information is arranged on the elastomer feeding conveyor belt, a recovery conveyor belt for collecting elastomers that do not meet the standards is arranged on one side of the base, and an elastomer handling robot is arranged on the base for conveying elastomers that meet the standards to the elastomer storage unit and conveying elastomers that do not meet the standards to the recovery conveyor belt.
[0015] Furthermore, the elastomer storage unit includes: a silo base, which is installed on a base, a U-shaped silo body is provided on the silo base, a gap is provided between the bottom of the U-shaped silo body and the silo base for a single elastomer to pass through, an elastomer limiting axis is provided in the U-shaped silo body for positioning the elastomer, a first pneumatic clamp and a second pneumatic clamp are provided on the silo base for controlling the elastomer from falling, and a feeding platform is provided on the silo base for pushing out the elastomer that has fallen into the gap.
[0016] Furthermore, the elastomer conveying unit includes: a first two-axis motion mechanism, on which the base is mounted a first two-axis motion mechanism for moving the elastomer from the feeding platform to the pressing unit, and on which a third pneumatic clamp for clamping the elastomer is mounted.
[0017] Furthermore, the claw disk positioning unit includes: a first horizontal motion mechanism, a first horizontal motion mechanism is installed on the base, a positioning base plate is arranged on the first horizontal motion mechanism, a rotary cylinder and a fixed claw disk base are installed on the positioning base, a rotating claw disk base is installed on the output end of the rotary cylinder, a first protrusion for limiting the claw end of the claw disk is arranged on the rotating claw disk base, and a second protrusion for limiting the gap end of the claw disk is arranged on the fixed claw disk base.
[0018] Furthermore, the screw locking unit includes: a vibration plate feeding module, and the vibration plate feeding module is connected to a screw tightening module arranged on the base through a hose.
[0019] Furthermore, the claw plate conveying unit includes: a second two-axis motion mechanism, on which the base is installed a second two-axis motion mechanism for moving the claw plate from the rotating claw plate base or the fixed claw plate base to the pressing unit, and on which the second two-axis motion mechanism is installed a fourth pneumatic clamp for clamping the claw plate.
[0020] Furthermore, the press-fitting unit includes: a second horizontal motion mechanism, a press-fitting fixing plate is installed on the second horizontal motion mechanism, a press-fitting base is arranged on the press-fitting fixing plate, a third protrusion for limiting the gap end of the claw plate is arranged on the press-fitting base, a clamping frame is arranged on the base, a clamping cylinder is installed on the clamping frame, and a nylon pressure block for extruding the assembled coupling is arranged at the output end of the clamping cylinder.
[0021] Furthermore, the finished product conveying unit includes: a finished product conveyor belt, which is arranged on one side of the base, and a third two-axis motion mechanism for moving the finished product coupling from the press-fit base to the finished product conveyor belt is provided on the base, and a fifth pneumatic clamp is installed on the third two-axis motion mechanism.
[0022] Furthermore, there are multiple elastomer storage units.
[0023] Beneficial effects:
[0024] (1) The structure is simple, without complex structural parts, and most of the common parts are used. The operation difficulty is low, and the coupling accessories can be automatically sorted, screwed and assembled. There is no need to manually measure and screen the size of the elastomer. The installation accuracy is guaranteed during assembly, and there is no damage on the surface.
[0025] (2) Multiple sets of elastomer storage units can store different coupling accessories for coupling assembly. There is no need to replace the silo, the production cycle is stable, and labor is greatly reduced.
[0026] (3) The equipment has high positioning accuracy, and the automated equipment can be connected with the previous and next processes. The clamping jaws are made of highly wear-resistant and flexible materials such as nylon to prevent scratches during clamping. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the utility model;
[0028] Figure 2 This is a schematic diagram of the structure of the elastic body sorting unit of the utility model;
[0029] Figure 3 This is a schematic diagram of the structure of the elastic body storage unit of the utility model;
[0030] Figure 4 This is a schematic diagram of the structure of the elastic body conveying unit of the utility model;
[0031] Figure 5 This is a schematic diagram of the structure of the claw plate positioning unit of the utility model;
[0032] Figure 6 This is a schematic diagram of the installation position of the first protrusion of the utility model;
[0033] Figure 7 This is a schematic diagram of the installation position of the second protrusion of the utility model;
[0034] Figure 8 It is a structural schematic diagram of the press-fitting unit of the utility model;
[0035] Description of the markings in the figure:
[0036] Pressing unit 1, second horizontal motion mechanism 11, press-fitting fixing plate 12, press-fitting base 13, pressing frame 15, pressing cylinder 16, nylon pressing block 17, elastomer sorting unit 2, elastomer feeding conveyor belt 21, visual sensor 22, elastomer handling manipulator 23, recycling conveyor belt 24, elastomer storage unit 3, silo base 31, U-shaped silo body 32, gap 33, elastomer limiting shaft 34, first pneumatic clamp 35, second pneumatic clamp 36, feeding platform 37, feeding cylinder 371, feeding bottom plate 372, positioning column 373, guide rail assembly Part 374, elastomer conveying unit 4, first two-axis motion mechanism 41, third pneumatic clamp 42, claw plate positioning unit 5, first horizontal motion mechanism 51, positioning base plate 52, rotary cylinder 53, fixed claw plate base 54, rotating claw plate base 55, first protrusion 56, second protrusion 57, screw locking unit 6, vibration plate feeding module 61, screw tightening module 62, claw plate conveying unit 7, second two-axis motion mechanism 71, fourth pneumatic clamp 72, finished product conveying unit 8, finished product conveyor belt 81, third two-axis motion mechanism 82, fifth pneumatic clamp 83. DETAILED DESCRIPTION
[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0038] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.
[0039] Example: Figure 1-Figure 8 As shown, the specific technical solution of the utility model is as follows: a coupling parts sorting and assembling device, comprising:
[0040] A press-fitting unit 1 is installed on a base and is used to press-fit the assembled coupling; the press-fitting unit 1 includes: a second horizontal motion mechanism 11, a press-fitting fixing plate 12 is installed on the second horizontal motion mechanism 11, a press-fitting fixing plate 12 is provided on a press-fitting base 13, a third protrusion for limiting the gap end of the claw plate is provided on the press-fitting base 13, a clamping frame 15 is provided on the base, a clamping cylinder 16 is installed on the clamping frame 15, and a nylon pressure block 17 for squeezing the assembled coupling is provided at the output end of the clamping cylinder 16. In this way, the claw plate at the bottom can be limited by adopting the third protrusion to ensure stability, and the nylon pressure block 17 can be provided to prevent crushing during press-fitting.
[0041] An elastomer sorting unit 2, wherein there are multiple elastomer storage units 3, and the elastomer sorting component is installed on the base for screening elastomers that meet the standards; the elastomer sorting unit 2 includes: an elastomer feeding conveyor belt 21, an elastomer feeding conveyor belt 21 is provided on one side of the base, a visual sensor 22 for obtaining elastomer information is provided on the elastomer feeding conveyor belt 21, a recovery conveyor belt 24 for collecting elastomers that do not meet the standards is provided on one side of the base, and an elastomer handling robot 23 for conveying elastomers that meet the standards to the elastomer storage unit 3 and conveying elastomers that do not meet the standards to the recovery conveyor belt 24 is provided on the base. In this way, by providing multiple elastomer storage units 3, elastomers of different models can be adaptively stored, and by providing a visual sensor 22 to obtain whether the appearance of the elastomer is damaged and whether the tolerance of the elastomer is within the allowable range, and by providing an elastomer handling robot 23, elastomers that do not meet the standards can be effectively screened out and qualified elastomers can be conveyed to the elastomer storage unit 3.
[0042] An elastomer storage unit 3, the elastomer storage unit 3 is installed on the base and is used to store elastomers that meet the standards; the elastomer storage unit 3 includes: a silo base 31, the silo base 31 is installed on the base, a U-shaped silo body 32 is provided on the silo base 31, a gap 33 for a single elastomer to pass through is provided between the bottom of the U-shaped silo body 32 and the silo base 31, an elastomer limiting shaft 34 for positioning the elastomer is provided in the U-shaped silo body 32, a first pneumatic clamp 35 and a second pneumatic clamp 36 for controlling the elastomer from falling are provided on the silo base 31, and a feeding platform 3 is provided on the silo base 31 for pushing out the elastomer that has fallen into the gap 33 7. With such arrangement, the discharge or falling of a single elastomer can be realized by providing the first pneumatic clamp 35 and the second pneumatic clamp 36, thereby realizing the action of taking materials one by one. The orderly arrangement of the elastomers in the U-shaped bin body 32 is realized by providing one or more elastomer limit shafts 34. The width of the gap 33 is larger than the thickness of the elastomer to facilitate the pushing out. The feeding platform 37 comprises: a feeding cylinder 371. A feeding bottom plate 372 is provided at the output end of the feeding cylinder 371. The feeding bottom plate 372 and the gap 33 are in the same plane. A positioning column 373 for positioning the elastomer is provided on the feeding bottom plate 372. The feeding bottom plate 372 is installed on a guide rail assembly 374.
[0043] An elastomer conveying unit 4, the elastomer conveying unit 4 is installed on the base, and is used to convey the elastomer from the elastomer storage unit 3 to the pressing unit 1; the elastomer conveying unit 4 includes: a first two-axis motion mechanism 41, the base is equipped with a first two-axis motion mechanism 41 for moving the elastomer from the feeding platform 37 to the pressing unit 1, and the first two-axis motion mechanism 41 is equipped with a third pneumatic clamp 42 for clamping the elastomer.
[0044] A claw disk positioning unit 5, which is installed on the base and is used to carry two claw disks of the coupling; the claw disk positioning unit 5 includes: a first horizontal motion mechanism 51, on which the first horizontal motion mechanism 51 is installed, a positioning base plate 52 is arranged on the first horizontal motion mechanism 51, a rotary cylinder 53 and a fixed claw disk base 54 are installed on the positioning base plate 52, a rotating claw disk base 55 is installed on the output end of the rotary cylinder 53, a first protrusion 56 for limiting the claw end of the claw disk is arranged on the rotating claw disk base 55, and a second protrusion 57 for limiting the gap end of the claw disk is arranged on the fixed claw disk base 54. In this way, when the claw end face of the claw disk is placed downward, because the claws of the claw disk are arranged at equal intervals, the direction of the screw holes of the claw disk after placement cannot meet the cooperation with the locking screw unit, and then the adjustment is achieved by setting a rotating claw disk base 55, and the rotation angle can be obtained by the camera The displacement angle of the claw disk is controlled.
[0045] The screw locking unit 6 is installed on the base, and is used to feed the screws into the bolt holes of the claw plate and pre-tighten them; the screw locking unit 6 includes: a vibration plate feeding module 61, and the vibration plate feeding module 61 is connected to a screw tightening module 62 arranged on the base through a hose. The vibration plate feeding module 61 and the screw tightening module 62 are common vibration plates in the field. This application will not describe them in detail, as long as their functions are realized.
[0046] A claw plate conveying unit 7, wherein the claw plate conveying unit 7 is installed on the base, and is used to convey the claw plate to the pressing unit 1; the claw plate conveying unit 7 comprises: a second two-axis motion mechanism 71, on which a second two-axis motion mechanism 71 for moving the claw plate from the rotating claw plate base 55 or the fixed claw plate base 54 to the pressing unit 1 is installed, and a fourth pneumatic clamp 72 for clamping the claw plate is installed on the second two-axis motion mechanism 71. With such an arrangement, there are two claw plate conveying units 7, which can simultaneously clamp two claw plates for screw locking, and are convenient for separate transportation to the pressing unit 1.
[0047] A finished product conveying unit 8 is installed on the base and is used to take out and collect the assembled couplings; the finished product conveying unit 8 includes: a finished product conveyor belt 81, the finished product conveyor belt 81 is arranged on one side of the base, and a third two-axis motion mechanism 82 is provided on the base for moving the finished coupling from the press-fitting base 13 to the finished product conveyor belt 81, and a fifth pneumatic clamp 83 is installed on the third two-axis motion mechanism 82.
[0048] The first two-axis motion mechanism 41, the second two-axis motion mechanism 71 and the third two-axis motion mechanism 82 mentioned above have the same structure, and can adopt a ball screw or a threaded screw or other structures that can realize horizontal and vertical motion;
[0049] The first horizontal motion mechanism 51 and the second horizontal motion mechanism 11 mentioned above have the same structure, and can adopt a ball screw or a threaded screw or other structures that can realize horizontal motion;
[0050] The clamping parts of the first pneumatic clamp 35 and the second pneumatic clamp 36 mentioned above are plate-like structures, the clamping part of the third pneumatic clamp 42 is a clamping block, and a clamping column is provided at the lower end of the clamping block, and the clamping parts of the fourth pneumatic clamp 42 and the fifth pneumatic clamp 83 are clamping rings, and the above clamping parts are all made of nylon material.
[0051] Working process:
[0052] First, the two claw discs are placed on the rotating claw disc base 55 and the fixed claw disc base 54 respectively, and then the first horizontal motion mechanism 51 controls the rotating claw disc base 55 and the fixed claw disc base 54 to move to the screw tightening module 62, and the two claw disc conveying units 7 press down to tighten and fix the claw discs, and then the screw tightening module 62 works to send the screws into the screw holes of the claw discs and pre-tighten them, and then the claw disc conveying unit 7 places the lower turntable on the press-fitting base 13;
[0053] Secondly, the elastomer is transported to the base through the elastomer feeding conveyor belt 21, and the visual sensor 22 obtains the elastomer information for screening. The elastomer that meets the standards is transported to the U-shaped warehouse 32 through the conveying elastomer handling robot 23, and then the elastomer is controlled by the first pneumatic gripper 35 and the second pneumatic gripper 36 to fall onto the feeding bottom plate 372, and is pushed out from under the U-shaped warehouse 32 by the feeding cylinder 371, and then the first two-axis motion mechanism 41 drives the third pneumatic gripper 42 to grab the elastomer and place the elastomer on the lower claw plate;
[0054] Finally, the upper claw plate is placed on the elastomer, and the clamping cylinder 16 moves downward to drive the nylon pressure block 17 to perform a clamping action. After completion, the fifth pneumatic clamp 83 on the third two-axis motion mechanism 82 is used to grasp and transport it to the finished product conveyor belt 81 to complete the assembly.
[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0056] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A coupling parts sorting and assembly device, characterized in that: include: A press-fitting unit (1), the press-fitting unit (1) being mounted on a base and used for press-fitting the assembled coupling; An elastomer sorting unit (2), the elastomer sorting component being mounted on the base and used for screening elastomers that meet the standards; an elastomer storage unit (3), the elastomer storage unit (3) being mounted on the base and used for storing elastomers that meet the standards; an elastomer conveying unit (4), the elastomer conveying unit (4) being mounted on the base and used for conveying the elastomer from the elastomer storage unit (3) to the pressing unit (1); A claw disc positioning unit (5), the claw disc positioning unit (5) being mounted on the base and used for supporting two claw discs of the coupling; A screw locking unit (6), the screw locking unit (6) being mounted on the base and used for inserting the screw into the bolt hole of the claw plate and performing pre-tightening; A claw plate conveying unit (7), the claw plate conveying unit (7) being mounted on the base and used for conveying the claw plate to the pressing unit (1); A finished product conveying unit (8) is installed on the base and is used to take out and collect the assembled coupling.
2. The coupling parts sorting and assembling equipment according to claim 1, characterized in that: The elastomer sorting unit (2) comprises: an elastomer feeding conveyor belt (21), the elastomer feeding conveyor belt (21) is arranged on one side of the base, a visual sensor (22) for obtaining elastomer information is arranged on the elastomer feeding conveyor belt (21), a recovery conveyor belt (24) for collecting elastomers that do not meet the standards is arranged on one side of the base, and an elastomer transporting robot (23) is arranged on the base for transporting elastomers that meet the standards to the elastomer storage unit (3) and transporting elastomers that do not meet the standards to the recovery conveyor belt (24).
3. The coupling parts sorting and assembling equipment according to claim 1, characterized in that: The elastomer storage unit (3) comprises: a silo base (31), the silo base (31) being mounted on a base, a U-shaped silo body (32) being arranged on the silo base (31), a gap (33) for a single elastomer to pass through being present between the bottom of the U-shaped silo body (32) and the silo base (31), an elastomer limiting shaft (34) for positioning the elastomer being arranged in the U-shaped silo body (32), a first pneumatic clamp (35) and a second pneumatic clamp (36) for controlling the elastomer from falling being arranged on the silo base (31), and a feeding platform (37) for pushing out the elastomer that has fallen into the gap (33) being arranged on the silo base (31).
4. The coupling parts sorting and assembling equipment according to claim 3, characterized in that: The elastomer conveying unit (4) comprises: a first two-axis motion mechanism (41), on which the base is mounted the first two-axis motion mechanism (41) for moving the elastomer from the feeding platform (37) to the pressing unit (1), and on which the first two-axis motion mechanism (41) is mounted a third pneumatic clamp (42) for clamping the elastomer.
5. The coupling parts sorting and assembling equipment according to claim 1, characterized in that: The claw disk positioning unit (5) comprises: a first horizontal motion mechanism (51), the first horizontal motion mechanism (51) is installed on the base, a positioning base plate (52) is arranged on the first horizontal motion mechanism (51), a rotary cylinder (53) and a fixed claw disk base (54) are installed on the positioning base plate (52), a rotating claw disk base (55) is installed at the output end of the rotary cylinder (53), a first protrusion (56) for limiting the claw end of the claw disk is arranged on the rotating claw disk base (55), and a second protrusion (57) for limiting the gap end of the claw disk is arranged on the fixed claw disk base (54).
6. The coupling parts sorting and assembling equipment according to claim 1, characterized in that: The screw locking unit (6) comprises a vibration plate feeding module (61), wherein the vibration plate feeding module (61) is connected to a screw tightening module (62) arranged on the base through a hose.
7. The coupling parts sorting and assembling equipment according to claim 5, characterized in that: The claw plate conveying unit (7) comprises: a second two-axis motion mechanism (71), on which the base is mounted a second two-axis motion mechanism (71) for moving the claw plate from the rotating claw plate base (55) or the fixed claw plate base (54) to the pressing unit (1), and on which the second two-axis motion mechanism (71) is mounted a fourth pneumatic clamp (72) for clamping the claw plate.
8. The coupling parts sorting and assembling equipment according to claim 1, characterized in that: The press-fitting unit (1) comprises: a second horizontal motion mechanism (11), a press-fitting fixing plate (12) is mounted on the second horizontal motion mechanism (11), a press-fitting base (13) is arranged on the press-fitting fixing plate (12), a third protrusion for limiting the gap end of the claw plate is arranged on the press-fitting base (13), a pressing frame (15) is arranged on the base, a pressing cylinder (16) is mounted on the pressing frame (15), and a nylon pressing block (17) for pressing the assembled coupling is arranged at the output end of the pressing cylinder (16).
9. The coupling parts sorting and assembling equipment according to claim 8, characterized in that: The finished product conveying unit (8) comprises: a finished product conveyor belt (81), wherein the finished product conveyor belt (81) is arranged on one side of the base, and a third two-axis motion mechanism (82) is arranged on the base for moving the finished product coupling from the press-fitting base (13) to the finished product conveyor belt (81), and a fifth pneumatic clamp (83) is installed on the third two-axis motion mechanism (82).
10. The coupling parts sorting and assembling equipment according to claim 1, characterized in that: The elastic body storage unit (3) is multiple.