Loading mould and pressure maintaining device

Abstract

The utility model relates to the technical field of powder metallurgy shaping, in particular to a loading mold and pressure maintaining equipment, the loading mold comprises a loading container, a bearing piece and a locking assembly, and the loading container is provided with a movably arranged pressure maintaining piece; the bearing piece is arranged in the loading container and located below the pressure maintaining piece, and the bearing piece is provided with a containing groove; the locking assembly is provided with a pressure maintaining part capable of moving towards the pressure maintaining piece, and the pressure maintaining part can lock the pressure maintaining piece. Wherein the loading mold has a pressure maintaining state, and in the pressure maintaining state, the pressure maintaining part locks the acting force of the pressure maintaining piece on the to-be-detected conductive material located in the containing groove. According to the pressure maintaining device, the borne pressure can be locked after the external pressure is removed, the pressure maintaining effect is guaranteed, the working efficiency is guaranteed, and meanwhile the cost is reduced.

Description

Loading molds and pressure holding equipment Technical Field

[0001] This utility model relates to the field of powder metallurgy shaping technology, and in particular to a loading mold and pressure holding device. Background Technology

[0002] Before conducting electrical tests on powdered materials, it is usually necessary to perform a pressure holding process. By applying and holding pressure, the powder is transformed into a sheet shape to form an electrode structure. Subsequently, electrical tests are conducted to obtain the impedance properties of the material.

[0003] In the relevant pressurization-holding process, loading molds and presses containing powdered materials are mostly used for processing. Specifically, the powdered material is first loaded into the loading mold, and then the press applies a certain pressure to the loading mold and maintains it for the required time. During the required holding time, the press needs to continuously apply force to the loading mold. This means that one press can only process one loading mold in the required time. When dealing with multiple loading molds, in order to ensure processing efficiency, multiple presses corresponding to the number of loading molds are required, resulting in higher costs. Summary of the Invention

[0004] The main purpose of this utility model is to provide a loading mold that can lock the pressure after the external pressure is removed, ensuring the pressure holding effect, ensuring work efficiency, and reducing costs.

[0005] To solve the above problems, the loading mold includes:

[0006] A loading container having a movable pressure-holding element;

[0007] A carrier member, disposed within the loading container and located below the pressure-holding member, the carrier member having a receiving groove; and

[0008] A locking assembly having a pressure-holding portion movable toward the pressure-holding member, the pressure-holding portion being capable of locking the pressure-holding member;

[0009] The loading mold has a pressure-holding state. In the pressure-holding state, the pressure-holding part locks the force exerted by the pressure-holding component on the conductive material to be tested located in the receiving groove.

[0010] In one embodiment of the present invention, the pressure-holding member has a pressure-holding protrusion on the side facing the carrier member, and the pressure-holding protrusion is provided corresponding to the receiving groove.

[0011] In one embodiment of the present invention, the locking assembly is located on the side of the pressure-holding member facing away from the support member.

[0012] In one embodiment of the present invention, the loading mold has a pressure-holding channel that extends from the locking assembly to at least a portion of the pressure-holding member.

[0013] In one embodiment of the present invention, the locking assembly includes a fixed member and a movable member. The fixed member is fixedly disposed on the loading container, and the movable member is disposed on the outer periphery of the fixed member. A motion conversion structure is provided between the outer peripheral surface of the fixed member and the inner peripheral surface of the movable member. The motion conversion structure is configured to convert the rotational motion of the movable member relative to the fixed member into a lifting motion. The movable member has the pressure-holding portion.

[0014] In one embodiment of the present invention, the motion conversion structure includes a first threaded portion disposed on the outer peripheral surface of the fixed member and a second threaded portion disposed on the inner peripheral surface of the movable member, wherein the helical directions of the first threaded portion and the second threaded portion are opposite.

[0015] In one embodiment of the present invention, the outer peripheral surface of the movable component is provided with at least one force-bearing protrusion.

[0016] In one embodiment of this utility model, the outer peripheral surface of the movable part is provided with a plurality of force-bearing protrusions evenly.

[0017] In one embodiment of this utility model, the loading mold further includes a test electrode and an electrical wire. The test electrode is located at the other end of the loading container away from the carrier, and the electrical wire is electrically connected to the test electrode and the conductive material to be tested.

[0018] This utility model also proposes a pressure-holding device, which includes a pressure-applying device and a driving device. The pressure-applying device is configured to apply a pressure-holding force toward the bearing member to the pressure-holding member, and the driving device is configured to drive the pressure-holding part to move toward the pressure-holding member and enter the pressure-holding state.

[0019] In this utility model, the powdered conductive material to be tested is placed in the receiving groove of the carrier. When the pressure holding member is subjected to external pressure, it can move toward the carrier and squeeze the conductive material to be tested. Then, the pressure holding part of the locking device can move toward the pressure holding member and lock the position of the pressure holding member. In this way, the pressure holding member is fixed in position to lock the pressure it receives in the mold structure. Even if the external pressure is removed, the conductive material to be tested can still be subjected to the pressure from the pressure holding member to achieve the pressure holding effect. In this way, the loading mold removed from the press can still perform the pressure holding action on the conductive material to be tested, thereby pressing the powdered conductive material to be tested into a sheet shape. Thus, each press can perform the pressure holding action on multiple loading molds per unit time, thereby ensuring work efficiency while reducing costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 is a structural schematic diagram of an embodiment of the loading mold provided by this utility model;

[0022] Figure 2 is a cross-sectional view of Figure 1;

[0023] Figure 3 is a structural schematic diagram of another embodiment of the loading mold provided by this utility model;

[0024] Figure 4 is a structural schematic diagram of the support component provided by this utility model;

[0025] Figure 5 is a structural schematic diagram of the pressure-holding device provided by this utility model.

[0026] Explanation of icon numbers:

[0027] 10. Loading container; 101. Pressure holding component; 101a. Pressure holding protrusion; 102. Fixing rod; 103. Support base plate; 104. Return spring; 10a. Pressure holding channel; 20. Support component; 20a. Receiving groove; 30. Locking assembly; 301. Fixing component; 302. Moving component; 302a. Pressure holding part; 3021. Force-bearing protrusion; 40. Test motor; 41. Test positive terminal; 42. Test negative terminal; 50. Electrical wire; 1000. Pressure holding device; 900. Pressure applying device; 800. Drive device.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0032] Please refer to Figures 1 to 4. The loading mold includes a loading container 10, a support member 20, and a locking assembly 30. The loading container 10 has a movable pressure-holding member 101. The support member 20 is disposed in the loading container 10 and located below the pressure-holding member 101. The support member 20 has a receiving groove 20a. The locking assembly 30 has a pressure-holding part 302a that can move toward the pressure-holding member 101. The pressure-holding part 302a can lock the pressure-holding member 101. The loading mold is in a pressure-holding state. In the pressure-holding state, the pressure-holding part 302a locks the force exerted by the pressure-holding member 101 on the conductive material to be tested located in the receiving groove 20a.

[0033] In this utility model, the powdered conductive material to be tested is placed in the receiving groove 20a of the carrier 20. When the pressure holding member 101 is subjected to external pressure, it can move toward the carrier 20 and squeeze the conductive material to be tested. Then, the pressure holding part 302a of the locking device can move toward the pressure holding member 101 and lock the position of the pressure holding member 101. In this way, the pressure holding member 101 is fixed in position to lock the pressure it receives in the mold structure. Even if the external pressure is removed, the conductive material to be tested can still be subjected to the pressure from the pressure holding member 101 to achieve the pressure holding effect. In this way, the loading mold removed from the press can still perform the pressure holding action on the conductive material to be tested, thereby pressing the powdered conductive material to be tested into a sheet shape. Thus, each press can perform the pressure holding action on multiple loading molds per unit time, thereby ensuring work efficiency while reducing costs.

[0034] Specifically, the loading container 10 includes a pressure-holding component 101, at least three fixing rods 102, and a supporting base plate 103. The pressure-holding component 101 and the supporting base plate 103 are aligned. Both ends of each fixing rod 102 are inserted into the pressure-holding component 101 and the supporting base plate 103, respectively. The pressure-holding component 101 and the fixing rods 102 are movably configured to move closer to or further away from the supporting base plate 103 along the axial direction of the pressure-holding rods. The supporting base plate 103 is fixedly connected to each fixing rod 102 by bolts, welding, or other means. The supporting base plate 103 is placed on any machined bearing surface. Multiple fixing rods 102 are spaced apart along the outer edges of the pressure-holding component 101 and the supporting base plate 103 to form an open installation space. An equivalent [structure / mechanism / etc.] is fixed within this installation space. The conductive structure acting as the battery cell has a carrier 20 located in the installation space and connected to the conductive structure, thus fixing it in the carrier container. The carrier 20 has a receiving groove 20a on the side facing the pressure-holding member 101. The receiving groove 20a is used to place the conductive material to be tested. In one embodiment, the cross-sectional dimension of the receiving groove 20a matches the cross-sectional dimension of the pressure-holding member 101 (it can be understood that the two can be a clearance fit or an interference fit). Thus, when the pressure-holding member 101 is subjected to pressure from a press, the pressure-holding member 101 can enter the receiving groove 20a and squeeze the conductive material to be tested in the groove. At this time, the locking assembly 30, under manual or machine operation, has two threaded locking components, one of which is movable. The lower end face of the locking component forms a pressure-holding part 302a. Another locking component is fixedly mounted on the device container. By manually rotating the movable locking component, the pressure-holding part 302a can be moved toward the pressure-holding member 101 and then fixed in position. In another embodiment, the outer peripheral surface of the movable locking component is provided with multiple protrusions. The machine operation can be achieved by fixing a locking structure on the output shaft of the rotary motor. The locking structure is provided with a limiting groove that adapts to the protrusions. By rotating the motor, the pressure-holding part 302a can be moved toward the pressure-holding member 101 and then fixed in position. After the position is fixed, the pressure-holding part 302a can maintain the pressure applied by the press to the carrier 20. Then the loading mold can be removed from the press and placed in a pressure-holding warehouse or other arbitrary area. The pressure holding process continues, and the existing pressure holding machine can hold pressure for the next loading mold. That is, assuming that in the original pressure holding scheme, the pressure holding machine needs to hold pressure for the existing loading mold for N hours, the pressure holding machine can only hold pressure for one loading mold within N hours. After using the loading mold proposed in this utility model, assuming that the time from the start of the connection between the loading mold and the press to the time after the press completes the pressure holding action on the loading mold and the time for the pressure holding part 302a to lock the pressure holding plate is a, theoretically, one press can complete the pressure holding of N / a loading molds within N hours, thereby significantly improving the pressure holding efficiency of a single press, and eliminating the need to prepare multiple presses to complete the pressure holding of multiple loading molds within a unit time, effectively controlling production costs.

[0035] In another embodiment, referring to Figure 1, the pressure-holding member 101 has a pressure-holding protrusion 101a on the side facing the support member 20. The pressure-holding protrusion 101a is provided with a receiving groove 20a. Specifically, a circular receiving groove 20a is provided on the upper end surface of the support member 20. The receiving groove 20a is located in the central region of the support member 20. The pressure-holding protrusion 101a is a flat cylindrical shape. During the process of the pressure-holding member 101 moving toward the support member 20, the pressure-holding protrusion 101a extends into the receiving groove 20a. By setting a small-sized pressure-holding protrusion 101a and receiving groove 20a, the pressure on the conductive material to be tested can be increased, which is beneficial to the sheet forming of the conductive material to be tested.

[0036] In one embodiment of this utility model, referring to Figure 1, the locking assembly 30 is located on the side of the pressure-holding member 101 facing away from the support member 20. Thus, the arrangement direction of the locking assembly 30, the pressure-holding member 101, and the support member 20 is consistent with the pressure direction experienced by the conductive material to be tested, which is beneficial for the assembly of the loading mold and reduces the volume of the loading mold in the non-vertical direction. Further, referring to Figure 3, multiple fixing rods 102 form a bearing step at the same height relative to the horizontal plane. A return spring 104 is provided on the bearing step, with one end of the return spring 104 abutting against the pressure-holding plate 1. On the side facing away from the locking assembly 30, the return spring 104 can provide a spring force for the pressure plate 101 to move toward the locking assembly 30. Thus, during the assembly of the loading mold, the return spring 104 can increase the distance between the pressure plate 101 and the support base plate 103, which facilitates the insertion of the conductive structure and the support member 20 located between them. At the same time, after the loading mold has completed the electrical test, after the locking assembly 20 releases the locking force on the pressure plate 101, the return spring 104 can push the pressure plate 101 away to reset its position, which facilitates the removal of the conductive structure and the support member 20.

[0037] To facilitate the application of pressure holding, please refer to Figure 2. The loading mold has a pressure holding channel 10a, which extends from the locking assembly 30 to at least a portion of the pressure holding member 101. Specifically, the pressure holding channel 10a includes a central through hole provided in the pressure holding part 302a of the locking assembly 30 and a guide cavity coaxially provided inside the pressure holding member 101. The pressure rod of the external press can pass through the through hole and directly abut against the top of the pressure holding member 101, forming a vertical force application path without off-center load, thereby improving the pressure transmission efficiency on the loading mold.

[0038] In one embodiment, referring to FIG1, the locking assembly 30 includes a fixing member 301 and a movable member 302. The fixing member 301 is fixedly disposed on the loading container 10, and the movable member 302 is disposed on the outer periphery of the fixing member 301. A motion conversion structure is provided between the outer peripheral surface of the fixing member 301 and the inner peripheral surface of the movable member 302. The motion conversion structure is configured to convert the rotational motion of the movable member 302 relative to the fixing member 301 into a lifting motion. The movable member 302 has a pressure-holding portion 302a. In this embodiment, on the fixing rod 102... Some parts of the structure are threaded, and the fixing member 301 is fixed to the fixing rod 102 by nuts to prevent the fixing member 301 from loosening in the loading container 10. The movable member 302 is a hollow structure and is fitted on the fixing member 301. The fixing member 301 and the movable member 302 are located on the side of the pressure holding member 101 facing away from the bearing member 20. The motion conversion structure is set between the fixing member 301 and the movable member 302. As long as the motion conversion between the movable member 302 and the fixing member 301 is realized, the specific implementation method is not limited.

[0039] Specifically, the motion conversion structure includes a first threaded portion on the outer peripheral surface of the fixed member 301 and a second threaded portion on the inner peripheral surface of the movable member 302. The first threaded portion and the second threaded portion have opposite helical directions. Through the cooperation of the first threaded portion and the second threaded portion, the structure is stable and reliable, so as to realize the directional movement of the movable member 302.

[0040] Obviously, the motion conversion structure is not limited to the specific implementation described above. In other embodiments, the motion conversion structure is a worm gear structure, with the worm rotatably mounted on the fixed member 301 and the worm wheel fixed in the movable member 302. The worm is driven to rotate by a motor so that the movable member 302 can move toward the pressure holding member 101 along the axial direction of the worm.

[0041] In the embodiment where the movable component 302 is manually driven to move, the outer peripheral surface of the movable component 302 is provided with at least one force-bearing protrusion 3021. The force-bearing protrusion 3021 facilitates the user's grip on the movable component 302 to apply rotational force. The force-bearing protrusion 3021 can be integrally formed with the movable component 302, thereby ensuring the strength and reliability of the structure. Specifically, the shape of the force-bearing protrusion 3021 is usually strip-shaped, semi-circular, or irregular polygonal, so that the fingers or palm can comfortably grip and apply force. The force-bearing protrusions 302 can be evenly or non-uniformly distributed on the outer circumferential surface of the movable part 302. Even distribution allows the user to have a more balanced and stable experience when applying force. For example, on the outer circumferential surface of a cylindrical movable part 302, 6 to 8 force-bearing protrusions 3021 can be arranged at equal intervals. Non-uniform distribution allows the protrusions to be placed in positions that are easy to grip and operate, depending on the actual operation needs. Furthermore, in order to improve friction and anti-slip performance, special treatments can be applied to the surface of the force-bearing protrusions 3021, such as adding anti-slip textures or spraying an anti-slip coating.

[0042] In the embodiment where the machine drives the movable part 302 to move, the outer peripheral surface of the movable part 302 is uniformly provided with a plurality of force-bearing protrusions 3021. Specifically, please refer to Figure 1. The plurality of force-bearing protrusions 3021 located on the outer peripheral surface of the movable part 302 form gear teeth. The movable part 302 meshes with another planetary gear structure connected to the motor through the gear tooth structure. When the motor is running, the planetary gear structure drives the movable part 302 to rotate, thereby realizing the movement of the movable part 302 toward the pressure holding member 101. In this process, the planetary gear structure converts the high speed and small torque of the motor output shaft into the low speed and large torque of the movable part 302, thereby fixing the position of the pressure holding member 101 and ensuring that the pressure holding can continuously act on the conductive material to be tested.

[0043] In one embodiment of this utility model, referring to Figure 3, the loading mold further includes a test electrode and an electrical wire 50. The test electrode is located at the end of the loading container 10 away from the carrier 20. The carrier 20 is electrically connected to the test electrode and the electrical wire 50. Specifically, the test electrode is fixed on the carrier base plate 103. The test electrode and the carrier 20 are connected through a conductive structure (which can be understood to function as a battery cell). The test electrode includes a positive test electrode 41 and a negative test electrode 42. In this embodiment, the positive test electrode 41 is located at the outer periphery of the carrier base plate 103, and the negative test electrode 42 is located in the central area of ​​the carrier base plate 103. The negative test electrode 42 is connected to the carrier 20 through the conductive structure. The conductive material to be tested in component 20 forms an electrical connection, and the conductor 50 forms an electrical connection with the conductive material to be tested and the positive electrode 41 in the carrier component 20. Thus, the positive electrode 41, the conductive structure, the conductive material to be tested, the conductor 50, and the negative electrode 42 constitute a test route, so that the loading mold can be automatically tested in the subsequent testing process by an external electrochemical action station or testing equipment, thereby measuring the electrical performance parameters such as conductivity and resistivity of the conductive material. The conductor 50 is a spring-type conductor structure, and the conductor 50 adapts to the pressure holding stroke of the carrier component 20 by deformation. It is understood that the relative position between the positive and negative electrodes is determined by the material properties and is not limited here.

[0044] This utility model also proposes a pressure-holding device 1000. Referring to Figure 5, the pressure-holding device 1000 includes a pressure-applying device 900 and a driving device 800. The pressure-applying device 900 is configured to apply a pressure-holding force toward the bearing member 20 to the pressure-holding member 101. The driving device 800 is configured to drive the pressure-holding part 302a toward the pressure-holding member 101 and into a pressure-holding state. Specifically, the pressure-holding device 1000 includes a base, a pressure-applying device 900, and a driving device 800. The base encloses an open receiving cavity. The loading mold is fixedly placed in the receiving cavity. A pressure applying device 900 is provided above the machine base. The pressure applying device 900 is a hydraulic cylinder, press, etc. The output shaft of the pressure applying device 900 acts on the pressure holding member 101 to transfer the pressure holding to the conductive material to be tested. A drive device 800 is provided on the side of the machine base. The drive device 800 includes a rotary motor, a linear motion mechanism, and a rotating member that cooperates with the locking assembly 30. The linear motion mechanism is fixed to the base through the first plate structure. The linear motion mechanism can be a moving module or a linear... The linear cylinder has a second plate structure above the linear motion mechanism that supports the rotating component, and a third plate structure above the rotating component. The rotating component is limited between the second and third plate structures by a fixed shaft. A rotary motor is provided on the side of the third plate structure facing away from the second plate structure. The output shaft of the rotary motor is connected to the rotating component. When the pressure applying device 900 applies a pressure-holding action to the pressure-holding component 101, the linear motion mechanism can drive the rotating component to move toward the locking assembly 30. When the rotating component is connected to the locking assembly 30, the rotary motor enters the working state and transmits the torque of the rotary motor to the locking assembly 30 through the rotating component, so that the pressure-holding part 302a can move toward the pressure-holding component 101 and lock the position of the pressure-holding part 302a, thereby locking the pressure of the pressure applying device 900 between the pressure-holding component 101 and the support component 20. After the above process is completed, the loading mold can be taken out from the base and placed in the pressure-holding warehouse or any other area to continue pressure holding. The pressure-holding equipment 1000 can hold the next loading mold in a very short time.

[0045] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A loading mold, characterized in that, The loading mold includes: a loading container (10) having a movable pressure-holding member (101); a carrier (20) disposed in the loading container (10) and located below the pressure-holding member (101), the carrier (20) having a receiving groove (20a); and a locking assembly (30) having a pressure-holding portion (302a) movable toward the pressure-holding member (101), the pressure-holding portion being capable of locking the pressure-holding member (101); wherein the loading mold has a pressure-holding state, in which the pressure-holding portion (302a) locks the force exerted by the pressure-holding member (101) on the conductive material to be tested located in the receiving groove (20a).

2. The loading mold as described in claim 1, characterized in that, The pressure-holding member (101) has a pressure-holding protrusion (101a) on the side facing the support member (20), and the pressure-holding protrusion (101a) is provided corresponding to the receiving groove (20a).

3. The loading mold as described in claim 2, characterized in that, The locking assembly (30) is located on the side of the pressure-holding member (101) facing away from the support member (20).

4. The loading mold as described in claim 3, characterized in that, The loading mold has a pressure-holding channel (10a) that extends from the locking assembly (30) to at least a portion of the pressure-holding member (101).

5. The loading mold as described in any one of claims 1 to 4, characterized in that, The locking assembly (30) includes a fixing member (301) and a movable member (302). The fixing member (301) is fixedly disposed on the loading container (10), and the movable member (302) is disposed on the outer periphery of the fixing member (301). A motion conversion structure is provided between the outer peripheral surface of the fixing member (301) and the inner peripheral surface of the movable member (302). The motion conversion structure is configured to convert the rotational motion of the movable member (302) relative to the fixing member (301) into a lifting motion. The movable member (302) has the pressure-holding part (302a).

6. The loading mold as described in claim 5, characterized in that, The motion conversion structure includes a first threaded portion on the outer peripheral surface of the fixed member (301) and a second threaded portion on the inner peripheral surface of the movable member (302), wherein the first threaded portion and the second threaded portion have opposite helical directions.

7. The loading mold as described in claim 6, characterized in that, The outer peripheral surface of the movable part (302) is provided with at least one force-bearing protrusion (3021).

8. The loading mold as described in claim 7, characterized in that, The outer peripheral surface of the movable part (302) is provided with a plurality of force-bearing protrusions (3021).

9. The loading mold as described in claim 7, characterized in that, The loading mold also includes a test electrode and an electrical wire (50). The test electrode is located at the other end of the loading container (10) away from the carrier (20). The carrier (20) is electrically connected to the test electrode and the electrical wire (50).

10. A pressure-holding device for holding pressure on a loading mold as described in any one of claims 1 to 9, characterized in that, The pressure holding device (1000) includes a pressure applying device (900) and a driving device (800). The pressure applying device (900) is configured to apply a pressure holding force toward the support member (20) to the pressure holding member (101), and the driving device (800) is configured to drive the pressure holding part (302a) toward the pressure holding member (101) and enter the pressure holding state.

Images