Clamp tool
By designing the clamping components of the fixture, the target part is clamped in the vertical direction using inserts and fixing parts, which solves the problem of inaccurate positioning of irregular products in projection inspection and achieves stable clamping and high-precision 3D data acquisition.
Patent Information
- Application Number
- CN202422935778.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-28
AI Technical Summary
When existing projection equipment detects irregularly shaped products, the products cannot be accurately located, resulting in inaccurate projection data or failure to obtain the required data.
A fixture tooling is designed, including a fixture body and a clamping assembly. The clamping assembly consists of a first insert and a first fixing member. The insert and the fixing member clamp the target part in the vertical direction. The insert is detachable and retractable. The fixing member achieves stable clamping through a screw, nut or magnetic component. Multiple inserts and support members are used to adapt to different target part sizes and positions.
It achieves stable clamping and accurate positioning of the target part, ensuring that the projection equipment can accurately acquire three-dimensional contour data, expanding the applicability of the fixture and tooling, and improving the detection accuracy and convenience.
Smart Images
Figure CN223493047U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of projection detection fixture technology, and in particular to a fixture tooling for projection detection. Background Technology
[0002] When technicians are developing products, they need to perform reverse engineering on existing related products (target parts) to obtain the three-dimensional contour data of the target parts. There is a projection device that obtains the three-dimensional contour data of the target parts by projection. Before inspection, the target parts need to be fixed with fixtures to facilitate projection.
[0003] Since most products are not regularly shaped, they cannot be positioned according to the technicians' wishes, resulting in inaccurate projection data or the technicians being unable to directly obtain the required projection data. Utility Model Content
[0004] The fixture provided by this utility model can solve at least one of the above-mentioned technical problems, and the specific technical solution is as follows:
[0005] The fixture is used to clamp and fix a target part. The fixture includes a fixture body and a clamping assembly. The clamping assembly is used to clamp and fix the target part on the fixture body. The clamping assembly includes a first insert and a first fixing member. When the target part is clamped and fixed in the fixture, the first insert and the first fixing member clamp the target part on opposite sides of the target part. The fixture body is provided with multiple insertion parts, and the first insert is detachably engaged with the insertion parts.
[0006] With the fixture placed on a horizontal plane as a reference, and the height direction of the fixture being the vertical direction, when the target part is clamped and fixed in the fixture, the first insert and the first fixing part clamp the target part in the vertical direction; the insert is configured as a through hole in the fixture body in the vertical direction.
[0007] The target component has a first target surface and a second target surface that are parallel to each other and face each other. When the target component is clamped on the fixture, in the vertical direction, the first fixing component is used to abut against the first target surface, and the first insert is used to abut against the second target surface. At least one of the first insert and the first fixing component can move in the vertical direction.
[0008] The first insert is configured as a telescopic member capable of extending and retracting in the vertical direction.
[0009] The first fixing member includes an interacting actuating member and a second supporting member. The actuating member abuts against the first target surface by sliding or rotating. When the actuating member rotates, the actuating member is configured as a screw, and the second supporting member is configured as a nut.
[0010] The first fixing member includes an actuating member and a second supporting member. The actuating member moves relative to the second supporting member in the vertical direction. The clamping assembly is also provided with an elastic member for pushing the actuating member toward the first insert. The actuating member can be pushed by the elastic force released by the elastic member and come into contact with the target member.
[0011] The first fixing member includes an actuating member and a second supporting member. The actuating member moves relative to the second supporting member in the vertical direction. A magnetic element is provided on the actuating member, and another magnetic element is provided on the second supporting member or the first inserting member. Under the magnetic force generated between the two magnetic elements, the actuating member can abut against the target member.
[0012] The first fixing member can also move relative to the tooling body along a first direction and / or a second direction, the first direction and the second direction intersect, and the first direction and the second direction also intersect with the up and down directions at the same time.
[0013] The clamping assembly further includes a third support member having a mating portion that can cooperate with the first fixing member. The mating portion and one of the first fixing members are provided with a through hole extending in a first direction, and the mating portion and the other of the first fixing members can move in the through hole.
[0014] The fixture also includes a fourth support for supporting the third support, and the first fixing member moves in the second direction by rotating about the fourth support.
[0015] Compared with the prior art, the fixture provided by this utility model is equipped with a clamping component, which includes a first insert and a first fixing component. In the vertical direction, the first insert is used to support the second target surface, and the first fixing component is used to abut against the first target surface, thereby clamping the target part on the fixture body. The first target surface and the second target surface are both parallel to the fourth plane of the first insert. In this way, in the vertical direction, the clamping component can stably clamp and fix the target part on the fixture body, so that the target part fixed by the clamping component can be easily projected by the projection device. Attached Figure Description
[0016] Figure 1 This is a perspective view of the fixture and tooling involved in this utility model.
[0017] Figure 2 This is an exploded view of the fixture and tooling involved in this utility model.
[0018] Figure 3 This is a perspective view of the main body of the fixture tooling involved in this utility model.
[0019] Figure 4 This is a perspective view of the clamping component of the fixture tooling involved in this utility model.
[0020] Figure 5A and Figure 5B This is a perspective view of a target component related to this utility model.
[0021] Figure 6A and Figure 6B This is a perspective view of the fixture or tooling used in this utility model after the target part is fixed. Detailed Implementation
[0022] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0023] This utility model provides a fixture 100, which can fix the target part 200 to be inspected at a suitable clamping angle so as to facilitate projection inspection by a projection device. Before projection inspection, the technician will select a reference surface 210 for the target part 200. The reference surface 210 can be clamped by the clamping component 30, so that the target part 200 is clamped and fixed by the fixture 100. The selection of the reference surface 210 should be as close as possible to the fact that after the target part 200 is inspected by the projection device, the technician can accurately obtain the three-dimensional contour data of the target part 200.
[0024] For ease of description below, with the fixture 100 placed on a horizontal plane as a reference, the height direction of the fixture 100 is the vertical direction, its length direction is the front-back direction, and its width direction is the left-right direction. The first plane is parallel to the plane passing through the front-back and left-right directions, and the first plane intersects the vertical direction. Preferably, the first plane is perpendicular to the vertical direction. The first direction and the second direction described below intersect, and both the first direction and the second direction intersect the vertical direction. The front-back direction is one case of the first direction, and the left-right direction is one case of the second direction.
[0025] The reference surface 210 includes a first target surface 210a and a second target surface 210b that are parallel to each other. When the target part 200 is fixed in the fixture 100, the first target surface 210a and the second target surface 210b are both parallel to the first plane. The first target surface 210a faces upward and the second target surface 210b faces downward. In the vertical direction, the first target surface 210a and the second target surface 210b are opposite each other. In the vertical direction, at least a part of the first target surface 210a coincides with the second target surface 210b.
[0026] Such as 1 and Figure 2As shown, the fixture 100 includes a first support member 10, a fixture body 20, and a clamping assembly 30. The fixture 100 is used to fix the target part 200. The first support member 10 and the fixture body 20 are arranged in the vertical direction. The first support member 10 has a second plane 11 facing upward, and the fixture body 20 has a third plane 21 facing upward. The second plane 11 and the third plane 21 are parallel to each other, and the second plane 11 and the third plane 21 are parallel to the first plane. In the fixture 100 with such a configuration, when the target part 200 is clamped in the fixture 100 and detected by the projection device, the projection device can correctly project the target part 200, making the obtained detection data more accurate.
[0027] In some implementations, such as Figure 2 As shown, the first support member 10 has a groove 12 with the opening facing downward. This arrangement can reduce the weight of the fixture 100 and facilitate the handling and movement of the fixture 100.
[0028] For example, 1. Figure 2 and Figure 4 As shown, the clamping assembly 30 includes a first insert 31, which supports the target 200 from below. The first insert 31 abuts against the second target surface 210b. In the vertical direction, the first insert 31 has a fourth plane 311 and a fifth plane. The fourth plane 311 is parallel to the third plane 21. The fourth plane 311 is located at the upper end of the first insert 31, and the fifth plane is located at the lower end of the first insert 31. When the target 200 is clamped, the fourth plane 311 contacts the second target surface 210b.
[0029] In some embodiments, the fifth plane is parallel to the fourth plane 311.
[0030] like Figure 1 , Figure 2 and Figure 3 As shown, the tooling body 20 is also provided with a plurality of insertion parts 22. The insertion parts 22 are used to allow at least a first insertion piece 31 to be detachably inserted. The shape of the first insertion piece 31 is adapted to the shape of the insertion part 22. Specifically, the first insertion piece 31 can be smoothly inserted into the insertion part 22 without significant shaking. At the same time, the first insertion piece 31 can also be smoothly removed from the insertion part 22.
[0031] The first insert 31 can be inserted into any insert portion 22 on the tooling body 20, and the position of the first insert 31 is not limited in the direction perpendicular to the vertical direction.
[0032] In some embodiments, a plurality of insertion portions 22 are evenly distributed on the tooling body 20, or in other words, the openings of the plurality of insertion portions 22 are evenly distributed on the third plane 21.
[0033] In some embodiments, the spacing between two adjacent insertion portions 22 in the left-right direction is equal, and / or the spacing between two adjacent insertion portions 22 in the front-back direction is equal. This arrangement is beneficial for the target part 200 to be clamped onto the tooling body 20 more accurately, more stably, and more quickly.
[0034] In some embodiments, the insertion part 22 is configured as a through hole extending vertically through the tooling body 20, and the fifth plane and the fourth plane 311 are parallel to each other. When the first insert 31 is inserted into the insertion part 22 and abuts against the target part 200, in the vertical direction, the fifth plane abuts against the second plane 11, and the fourth plane 311 abuts against the second target surface 210b. In this way, the first insert 31 can more stably support the second target surface 210b and prevent the target part 200 from tilting.
[0035] In some embodiments, the first insert 31 is configured as a telescopic member that can extend and retract in the vertical direction, which facilitates the adjustment of the size of the first insert 31 in the vertical direction after it is inserted into the insertion part 22.
[0036] For example, 1. Figure 2 and Figure 4 As shown, the clamping assembly 30 also includes a first fixing member 32 that interacts with the first insert 31. Through the combined action of the first insert 31 and the first fixing member 32, the target member 200 is clamped / fixed in the vertical direction.
[0037] In some embodiments, the first fixing member 32 is movable in the vertical direction, so that the first fixing member 32 can abut against the first target surface 210a which has a different size in the vertical direction from the third plane 21. Specifically, the first fixing member 32 includes an actuating member 321 and a second supporting member 322. The first fixing member 32 is moved in the vertical direction by the interaction between the actuating member 321 and the second supporting member 322. The actuating member 321 is used to abut against the first target surface 210a. Under the joint action of the actuating member 321 and the first insert 31, the target member 200 is clamped / fixed in the vertical direction. In some embodiments, the second supporting member 322 is installed on the outer side of the actuating member 321.
[0038] In some embodiments, the lengths of the multiple first inserts 31 are different. When the first inserts 31 are inserted into the insertion part 22, the dimensions of the first inserts 31 protruding from the third plane 21 in the vertical direction are different. In this way, the first inserts 31 can support the second target surface 210b which has different dimensions at a distance from the third plane 21 in the vertical direction.
[0039] As described above, at least one of the first insert 31 and the first fixing member 32 can move in the vertical direction. By controlling the first insert 31 and / or the first fixing member 32, the operator can enable the fixture 100 to clamp different target parts 200. The first target surface 210a and the second target surface 210b of these target parts 200 have different dimensions in the vertical direction, which increases the applicability of the fixture 100.
[0040] In some embodiments, the actuator 321 interacts with the second support 322 by rotation. For example, the actuator 321 is configured as a screw and the second support 322 is configured as a nut. In this case, the actuator 321 rotates relative to the second support 322.
[0041] In some embodiments, the actuating member 321 may also be configured to slide relative to the second support member 322.
[0042] In some embodiments, the actuating member 321 can also be elastically pushed to abut against the target member. For example, the clamping assembly 30 is provided with an elastic member for pushing the actuating member 321 toward the first insert 31. The elastic member can be a compression spring, sponge, rubber, tension spring, etc.
[0043] In some embodiments, the actuating element 321 may also abut against the target element due to magnetic force. For example, the actuating element 321 may have one magnetic element and the second support may have another magnetic element. The repulsive or attractive force generated between the two magnetic elements can push the actuating element 321 toward the first insert 31. Alternatively, the actuating element 321 may have one magnetic element and the first insert 31 may have another magnetic element. The attractive force generated between the two magnetic elements can push the actuating element 321 toward the first insert 31. One of the two magnetic elements may be a magnet or the like.
[0044] In some embodiments, the clamping assembly 30 further includes a third support member 33, which has a mating portion 331 that cooperates with the first fixing member 32 / second support member 322. The mating portion 331 and the first fixing member 32 / second support member 322 are mated by a shaft-hole fit. The mating portion 331 is configured as a through hole extending in a first direction. Alternatively, the first fixing member 32 / second support member 322 is provided with a through hole extending in a first direction. In this way, the first fixing member 32 / second support member 322 and the mating portion 331 can move relative to each other in the first direction. Specifically, the first fixing member 32 / second support member 322 can move in the mating portion 331 along the first direction, or the mating portion 331 can move in the through hole on the first fixing member 32 / second support member 322 along the first direction. This configuration enables the clamping fixture 100 to clamp / fix the target part 200 at different positions in the first direction.
[0045] In some embodiments, the first fixing member 32 / second support member 322 and mating part 331 move / move relative to each other in a first direction by sliding.
[0046] In some embodiments, the second support 322 can be supported by the third support 33, which can improve the stability of the action 321 when fixing the target 200.
[0047] In some embodiments, the plane at the lowest end of the actuating member 321 is parallel to the first target surface 210a / fourth plane 311, which allows the lower end of the actuating member 321 to fit more closely with the first target surface 210a, thereby making the target member 200 more stably clamped on the tooling body 20.
[0048] The fixture 100 further includes at least one positioning member 60. In a direction perpendicular to the vertical direction, the positioning member 60 is used to abut against the target member 200, thereby stably positioning the target member 200 on the fixture body 20. Specifically, in a first direction, the positioning member 60 is used to abut against at least one of the first two ends of the target member 200; in a second direction, the positioning member 60 is used to abut against at least one of the second two ends of the target member 200.
[0049] The shape of the positioning member 60 also needs to be compatible with the shape of the insertion part 22. The positioning member 60 can be smoothly inserted into the insertion part 22 without significant shaking. At the same time, the first insertion member 31 can be smoothly removed from the insertion part 22.
[0050] In some embodiments, the positioning member 60 may also be configured as a telescopic member that can extend and retract in the vertical direction.
[0051] In some embodiments, the first insert 31 and the positioning member 60 are configured to be generic, that is, the first insert 31 and the positioning member 60 have the same shape and size, which can reduce costs and facilitate actual operation.
[0052] In some implementations, such as Figure 1 and Figure 2 As shown, the fixture 100 also includes a fourth support 40 for supporting the third support 33. The third support 33 can rotate around the fourth support 40. That is, the projection position of the third support 33 in the first plane along the vertical direction can change, thereby changing the projection position of the first fixing member 32 in the first plane, or in other words, allowing the first fixing member 32 to move in the second direction, thus increasing the clamping range of the clamping assembly 30. The first fixing member 32 / fitting part 331 moves in the second direction by rotating around the fourth support 40.
[0053] In some embodiments, the first fixing member 32 / fitting part 331 moves in the second direction by translating or sliding around the fourth support member 40.
[0054] In a preferred embodiment, the fourth support member 40 is connected to the third support member 33 and the tooling body 20 in the vertical direction. In this way, the third support member 33 can be indirectly fixed on the tooling body 20, thereby making the target part 200 more stably clamped in the fixture 100 and simplifying the structure of the fixture 100.
[0055] In a more preferred embodiment, the fixture 100 further includes a connector 50 connected to the fixture body 20 in a first direction. The connector 50 is used to connect the fixture body 20 and the fourth support member 40. This arrangement can fix the third support 33 on the fixture body 20 while avoiding interference between the fourth support member 40 and the target member 200 / first insert member 31 / positioning member 60, thus preventing the target member 200 from being clamped by the clamping assembly 30 at an angle.
[0056] like Figure 5A and Figure 5B As shown, the following describes the process of fixing the target part 200 and performing projection detection using the fixture 100 provided by this utility model, taking the target part 200 as the bottom shell of the photosensitive unit in the processing box as an example.
[0057] The processing cartridge can be detachably installed into an electrophotographic imaging device. The processing cartridge includes a developing unit and a photosensitive unit. The developing unit includes a developing housing for containing developer and a developing roller disposed in the developing housing for supplying developer to the photosensitive unit. The photosensitive unit includes a photosensitive housing 200, a cleaning blade, and a photosensitive drum disposed in the photosensitive housing. The photosensitive housing 200 has a mounting surface P for mounting the cleaning blade. The cleaning blade is used to scrape off waste developer from the photosensitive drum. The photosensitive housing 200 has a first hole 220 and a second hole 230 at one of its two ends in the length direction. The photosensitive unit also includes a fixing member for fixing the photosensitive drum in the photosensitive housing 200. The fixing member passes through the first hole 220 and the second hole 230.
[0058] The first step is to determine the mounting surface P of the cleaning scraper in the photosensitive housing 200, or a plane parallel to the mounting surface P, as the first target surface 210a. The mounting surface P is parallel to the first plane. The plane opposite to the first target surface 210a in the vertical direction is selected as the second target surface 210b. The first target surface 210a, the second target surface 210b, and the third plane 21 are parallel.
[0059] The second step is to clamp and fix the photosensitive housing onto the tooling body 20. Specifically, the first insert 31 is first inserted into the insertion part 22, and the target part 200 is placed on the first insert 31. The fourth plane 311 of the first insert 31 supports the second target surface 210b. The positioning member 60 is then inserted into the insertion part 22 to adjust the position of the target part 200 in the first and second directions so that the target part 200 is positioned in the first and second directions. Finally, the lower end of the first fixing member 32 is brought into contact with the first target surface 210a, thereby clamping the target part 200 onto the tooling body 20.
[0060] In some embodiments, the clamping assembly 30 further includes a second insert 34. When the first insert 31 and the second insert 34 are inserted into the insertion portion 22, the size of the first insert 31 protruding from the third plane 21 is different from the size of the second insert 34 protruding from the third plane 21. In this way, the clamping fixture 100 can support the third reference surface 210c of the target part 200, which is also parallel to the mounting surface P.
[0061] The third step is to use a projection device to project the photosensitive housing 200 from top to bottom to obtain the three-dimensional contour data of the photosensitive housing 200. For example, with the mounting surface P as the reference, the technician can know the distance between the first hole 220 and the second hole 230 in the photosensitive housing 200 and the mounting surface in the second direction / first direction.
[0062] According to the inventive concept of this utility model, the clamping component 30 can also clamp the target part 200 from the first direction or the second direction, so that the target part 200 is clamped and fixed on the fixture 100.
[0063] [Beneficial Effects]
[0064] Compared with the prior art, the fixture 100 provided by this utility model has the following beneficial effects:
[0065] First, the fixture 100 is provided with a clamping assembly 30, which includes a first insert 31 and a first fixing member 32. In the vertical direction, the first insert 31 is used to support the second target surface 210b, and the first fixing member 32 is used to abut against the first target surface 210a, thereby clamping the target part 200 on the fixture body 20. The first target surface 210a and the second target surface 210b are both parallel to the fourth plane 311 of the first insert 31. In this way, in the vertical direction, the clamping assembly 30 can stably clamp and fix the target part 200 on the fixture body 20, so that the target part 200 fixed by the clamping assembly 30 can be easily projected by the projection device.
[0066] Second, the first fixing member 32 includes an action member 321 and a second support member 322. The action member 321 interacts with the second support member 322, enabling the action member 321 to move in the vertical direction. In this way, the fixture 100 can clamp / fix different target members 200. The first target surface 210a and the second target surface 210b of these target members 200 have different dimensions in the vertical direction, which increases the applicability of the fixture 100.
[0067] Third, the first fixing member 31 can also move along the first direction, so that the clamping fixture 100 can clamp / fix the target part 200 at different positions in the first direction. For example, the clamping assembly 30 also includes a third support member 33, which has a mating part 331 that cooperates with the first fixing member 32 / second support member 322. The mating part 331 and one of the first fixing members 31 are provided with a through hole extending along the first direction, and the other of the mating part 331 and the first fixing member 31 can move in the through hole.
[0068] Fourth, the fixture 100 is provided with a plurality of insertion parts 22, and the spacing between two adjacent insertion parts 22 is equal in the left-right direction, and / or the spacing between two adjacent insertion parts 22 is equal in the front-back direction. The first insertion member 31 can be inserted into any insertion part 22. In this way, the position of the first insertion member 31 is not limited in the direction perpendicular to the up-down direction, which is beneficial to expanding the clamping range of the clamping assembly 30.
[0069] Fifth, the first fixing member 32 / acting member 321 can also move along the second direction. The acting member 321 moves through the third support member 33. The fixture tooling 100 also includes a fourth support member 40 for supporting the third support member 33. The third support member 33 can rotate around the fourth support member 40. In this way, the third support member 33 can move in the first plane, thereby enabling the first fixing member 32 to move in the first plane, and increasing the clamping range of the clamping assembly 30.
[0070] Sixth, the fixture 100 is also provided with at least one positioning element 60 for positioning the target part 200 in the first direction and the second direction, which can enhance the stability of the target part 200 on the fixture body 20.
[0071] Seventh, the first insert 31 and the insert 22 are detachably coupled, and the fixture 100 with such a configuration can clamp different target parts 200, and the position can be adjusted at any time during the clamping process of the fixture 100 clamping the target part 200, making the application of the fixture 100 more convenient.
[0072] Eighth, the first insert 31 and the positioning member 60 are configured to have the same shape and size, that is, the first insert 31 and the positioning member 60 are interchangeable, which can reduce costs and facilitate actual operation.
Claims
1. A fixture for clamping and fixing a target part, comprising a fixture body and a clamping assembly, the clamping assembly being used to clamp and fix the target part onto the fixture body; characterized in that, The clamping assembly includes a first insert and a first fixing member. When the target part is clamped and fixed in the fixture, the first insert and the first fixing member clamp the target part on opposite sides of the target part. The fixture body is provided with multiple insertion parts, and the first insert and the insertion parts are detachably engaged.
2. The fixture according to claim 1, characterized in that, With the fixture placed on a horizontal plane as a reference, and the height direction of the fixture being the vertical direction, when the target part is clamped and fixed in the fixture, the first insert and the first fixing part clamp the target part in the vertical direction; the insert is configured as a through hole in the fixture body in the vertical direction.
3. The fixture according to claim 2, characterized in that, The target component has a first target surface and a second target surface that are parallel to each other and face each other. When the target component is clamped on the fixture, in the vertical direction, the first fixing component is used to abut against the first target surface, and the first insert is used to abut against the second target surface. At least one of the first insert and the first fixing component can move in the vertical direction.
4. The fixture according to claim 3, characterized in that, The first insert is configured as a telescopic member capable of extending and retracting in the vertical direction.
5. The fixture according to claim 3, characterized in that, The first fixing member includes an interacting actuating member and a second supporting member. The actuating member abuts against the first target surface by sliding or rotating. When the actuating member rotates, the actuating member is configured as a screw, and the second supporting member is configured as a nut.
6. The fixture according to claim 3, characterized in that, The first fixing member includes an actuating member and a second supporting member. The actuating member moves relative to the second supporting member in the vertical direction. The clamping assembly is also provided with an elastic member for pushing the actuating member toward the first insert. The actuating member can be pushed by the elastic force released by the elastic member and come into contact with the target member.
7. The fixture according to claim 3, characterized in that, The first fixing member includes an actuating member and a second supporting member. The actuating member moves relative to the second supporting member in the vertical direction. A magnetic element is provided on the actuating member, and another magnetic element is provided on the second supporting member or the first inserting member. Under the magnetic force generated between the two magnetic elements, the actuating member can abut against the target member.
8. The fixture according to claim 3, characterized in that, The first fixing member can also move relative to the tooling body along a first direction and / or a second direction, the first direction and the second direction intersect, and the first direction and the second direction also intersect with the up and down directions at the same time.
9. The fixture according to claim 8, characterized in that, The clamping assembly further includes a third support member having a mating portion that can cooperate with the first fixing member. The mating portion and one of the first fixing members are provided with a through hole extending in a first direction, and the mating portion and the other of the first fixing members can move in the through hole.
10. The fixture according to claim 8, characterized in that, The fixture also includes a fourth support for supporting the third support, and the first fixing member moves in the second direction by rotating about the fourth support.