A mold for water tank immersion test

Abstract

The utility model discloses a kind of mould for water tank immersion test, to provide a kind of water tank immersion test mould of improving adaptability of test mould, it is convenient to replace and maintain. It includes rack, the upper end of rack is connected with lifting plate, the lower end of rack is connected with support foot, lifting plate is connected with support frame;Fixed clamping plate, support frame is detachably connected with mounting rod, fixed clamping plate is connected with mounting rod;Mounting seat, mounting seat is connected with support frame and is lifted, mounting seat is slidably connected with limit stopper;Movable clamping plate, movable clamping plate is connected with connecting piece, connecting piece is detachably connected with mounting seat by limit stopper;Fixed chuck, fixed chuck is movably connected with fixed clamping plate;Chuck, chuck is connected with movable clamping plate and is lifted;Water storage tank, water storage tank is connected with rack, water storage tank is connected with water inlet pipe and water outlet pipe.The utility model has the beneficial effects that: test mould can realize the stable clamping detection of various specifications of water tank;Improve detection stability and efficiency;Protect water tank.

Description

Technical Field

[0001] This utility model relates to the field of water tank testing technology, and in particular to a mold for water tank immersion testing. Background Technology

[0002] Cleaning machines and other cleaning appliances are widely used in homes, hotels, and other places. Since their main functions are cleaning, scrubbing, and recycling, they require water tanks with water supply components. Because the water tanks are installed inside the machine, they need to ensure that the inner cavity does not leak when filled with water. Therefore, the water tanks need to undergo a water immersion sealing test during production.

[0003] Chinese Patent Grant Announcement No.: CN 214309331 U, Grant Announcement Date: September 28, 2021. This application proposes a special airtightness testing device for water tanks, relating to the field of airtightness testing machinery. It includes a frame and lifting cylinders. The frame is placed on the ground, and a water tank is installed inside the frame. A lifting frame is installed on the upper part of the water tank. Two lifting cylinders are symmetrically arranged on the frame. A positioning frame and a sealing cylinder are installed on the lifting frame. Several test water tanks are placed on the positioning frame, and sealing holes are formed on the test water tanks. The shortcomings of this technical solution are: the lack of a mold replacement structure for changes in the size of the test piece, resulting in a single-purpose testing device, requiring multiple different testing devices for testing, and high testing costs.

[0004] In summary, existing water tank testing devices suffer from poor adaptability of the molds to the test objects and difficulty in replacement and maintenance. Utility Model Content

[0005] The present invention aims to overcome the shortcomings of existing water tank testing devices, such as poor adaptability of the mold to the test object and difficulty in replacement and maintenance, and provides a water tank immersion test mold that improves the adaptability of the test mold and facilitates replacement and maintenance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A mold for water tank immersion testing, comprising: The frame has a lifting plate at the top and a support leg at the bottom. The lifting plate is connected to a support frame. The fixed clamping plate and support frame are detachably connected to the mounting rod, and the fixed clamping plate is connected to the mounting rod. Mounting base, the mounting base is lifted and connected to the support frame, and the mounting base is slidably connected to a limit block; The movable clamping plate is connected to a connector, which is detachably connected to the mounting base via a limiting pressure block. Fixed chuck, which is movably connected to the fixed clamping plate; The movable chuck is connected to the movable clamping plate in a lifting and lowering manner. The water storage tank is connected to the frame and has an inlet pipe and an outlet pipe.

[0007] The upper end of the frame is connected to a lifting plate via a lifting mechanism, while the lower end is supported by support legs. The frame can stably move up and down to enter or leave the water tank for testing while supporting the lifting plate. The fixed clamping plate is detachably connected to the support frame via a mounting rod, allowing for maintenance and replacement. The movable clamping plate is detachably connected to the limiting pressure plate via a connector, allowing for disassembly and maintenance of the movable clamping plate itself. The clamping operation of the mold on the water tank can be achieved by raising and lowering the mounting base, enabling free replacement of the mold clamping module. Simultaneously, the movable clamping plate can be assembled by sliding the limiting pressure block, making replacement simple and convenient. The fixed chuck on the fixed clamping plate can move on the fixed clamping plate, thus making the fixed clamping plate mold itself adjustable. The raising and lowering of the movable chuck on the movable clamping plate makes the movable clamping plate mold itself adjustable, reducing mold development workload, saving costs, and improving the flexibility of clamping actions to prevent damage to the water tank. The test mold can achieve stable clamping and testing of water tanks of various specifications, improve testing stability and efficiency, protect the water tank, facilitate structural replacement and maintenance, save costs, and make it easy to adjust and use.

[0008] Preferably, the frame is connected to a telescopic mechanism, the lifting plate is connected to a connecting seat, the telescopic mechanism is connected to the connecting seat, the lifting plate is connected to a guide seat, the frame is connected to a positioning seat, the guide seat is connected to a guide cylinder, the positioning seat has a guide insertion hole, and the guide cylinder is inserted into the guide insertion hole. The telescopic mechanism is fixed on the frame, and the lifting plate is connected to the telescopic part of the telescopic mechanism, thereby driving the lifting plate to rise and fall through the telescopic mechanism. The guide seat on the lifting plate is connected to the guide cylinder, so that the guide cylinder passes through the guide insertion hole of the frame and the positioning seat. During the lifting of the lifting plate, the guide cylinder moves along the guide insertion hole, thereby ensuring the orientation and stability of the lifting plate, preventing the lifting plate from shaking and affecting the water tank docking and testing. This achieves the effect of improving the lifting stability of the device.

[0009] Preferably, the support frame is equipped with a guide rail, the connector is inserted into the guide rail, the support frame is connected to a telescopic mechanism two, the telescopic mechanism two is connected to one end of the mounting base, the other end of the mounting base is provided with a mounting groove, the opposite groove surfaces of the mounting groove are provided with guide grooves, one end of the limiting pressure block is inserted into the guide groove, the other end of the limiting pressure block is provided with a feeding slope, the guide groove is connected to a guide rod, the guide rod is sleeved with an elastic mechanism one, one end of the elastic mechanism one is connected to the guide groove, and the other end of the elastic mechanism one is connected to the limiting pressure block. The connecting component moves vertically and directionally on the support frame via a guide rail. A second telescopic mechanism is connected to the support frame to drive the mounting base to move up and down, thereby causing the movable clamping plate connected to the mounting base to move up and down. Limiting blocks are connected to both sides of the mounting slot of the mounting base via guide grooves. The limiting blocks open the mounting slot by moving, allowing the fixed clamping plate to quickly enter and fix itself along the feed ramp. Resetting the limiting blocks then locks the movable clamping plate in the mounting slot. An elastic mechanism allows the limiting blocks to automatically perform the above actions, thereby improving the maintenance and replacement efficiency of the movable clamping plate. This achieves the effect of improving the movement stability and maintenance / replacement efficiency of the movable clamping plate.

[0010] Preferably, the mounting slot is connected to a limiting plate, and the connector is equipped with a limiting slot, with the limiting plate and limiting slot interlocking. The connector's interlocking with the limiting plate and limiting slot allows for quick and simple installation, further improving the stability of the moving clamping plate connection and preventing the moving clamping plate from falling out of the mounting slot. This achieves the effect of further improving the stability of the mold structure connection and the efficiency of assembly and disassembly.

[0011] Preferably, each limiting block is connected to a linkage seat. The linkage seat has a connecting groove, and a rotating rod is connected to the connecting groove. The rotating rod has a locking rod, one end of which has a rotating hole into which the rotating rod is inserted. The other end of the locking rod has a mounting hole into which a support rod is inserted. The end face of the support rod has a limiting screw hole, and a limiting screw is threaded into the limiting screw hole. Both limiting blocks on both sides are connected to the linkage seat on the upper side, so that the connection between the connecting groove and the rotating rod allows the other side of the rotating rod on both sides to be connected as a whole through the locking rod. Thus, the limiting block can be slid by pressing the rotating rod, and the moving clamp can be quickly removed when replacing the moving clamp. This achieves the effect of simplifying the mold replacement and maintenance steps and improving convenience.

[0012] Preferably, the support frame is connected to a fixing block, which has mounting screw holes. The mounting rod is inserted into the guide groove and threadedly connected to the mounting screw holes. The support frame is threadedly connected to the mounting rod of the fixed clamping plate via the mounting screw holes through the fixing block. This achieves the effect of quick installation, disassembly, and maintenance of the fixed clamping plate.

[0013] Preferably, the side of the fixed clamping plate has a movable groove, into which a guide rod is inserted. The fixed clamp is inserted into the other end of the guide rod, and a second elastic mechanism is connected to the guide rod. One end of the second elastic mechanism is connected to the movable groove, and the other end is connected to the fixed clamp. The side of the fixed clamping plate allows the fixed clamp to reciprocate within the movable groove. The guide rod and the second elastic mechanism ensure the stability of the fixed clamp's movement and automatically adjust the clamping force and angle of the water tank. This further ensures stable clamping of water tanks of various shapes without damaging the surface of the water tank.

[0014] Preferably, the end face of the movable clamping plate is provided with a second movable groove, into which a second guide rod is inserted. The movable clamping head is inserted into the other end of the second guide rod, and a third elastic mechanism is sleeved on the second guide rod. One end of the third elastic mechanism is connected to the second movable groove, and the other end is connected to the movable clamping head. The movable clamping plate is connected to the movable clamping head through the second movable groove on its lower side, allowing the movable clamping head to move elastically during the lifting and lowering of the movable clamping plate. This achieves the stability of the fixed clamping head's movement and automatic elastic adjustment of the clamping force and clamping angle on the water tank. This further ensures that water tanks of various shapes can be firmly clamped without damaging the surface of the water tank.

[0015] The beneficial effects of this utility model are: the test mold can achieve stable clamping and testing of water tanks of various specifications; improve testing stability and efficiency; protect the water tank; facilitate structural replacement and maintenance, saving costs; make it easy to adjust and use; improve the moving stability and maintenance and replacement efficiency of the moving clamp; and simplify the steps and convenience of mold replacement and maintenance. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram showing the connection between the lifting platform and the telescopic mechanism; Figure 3 This is a schematic diagram showing the connection between the fixed clamping plate and the movable clamping plate and the support frame; Figure 4 This is a sectional view of the connection between the limiting block and the mounting base; Figure 5 This is a top view showing the connection between the limit block and the mounting base.

[0017] In the diagram: 1. Frame, 2. Lifting plate, 3. Support leg, 4. Support frame, 5. Fixed clamp, 6. Mounting rod, 7. Mounting seat, 8. Limiting block, 9. Moving clamp, 10. Connector, 11. Fixed clamp, 12. Moving clamp, 13. Water tank, 14. Inlet pipe, 15. Outlet pipe, 16. Telescopic mechanism one, 17. Connecting seat, 18. Guide seat, 19. Positioning seat, 20. Guide cylinder, 21. Guide slide rail, 22. Telescopic mechanism two, 23. Mounting groove, 24. Guide slide groove 25. Feeding ramp, 26. Guide rod, 27. Elastic mechanism one, 28. Limiting plate, 29. Limiting slot, 30. Linkage seat, 31. Connecting groove, 32. Rotating rod, 33. Locking rod, 34. Support rod, 35. Limiting screw, 36. Fixing block, 37. Movable groove one, 38. Guide rod one, 39. Elastic mechanism two, 40. Movable groove two, 41. Guide rod two, 42. Elastic mechanism three, 43. Mounting block, 44. Guide mounting rod, 45. Positioning screw hole. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components illustrated in these embodiments do not limit the scope of this application. For ease of illustration, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, an element described as being “below” other elements or features would be positioned “up” other elements or features. Thus, the exemplary term “down” can include both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale. Techniques, processes, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, processes, and equipment should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0021] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0022] Example 1: like Figure 1 , 3 As shown, a mold for water tank immersion testing includes a frame 1, a lifting plate 2 connected to the upper end of the frame 1, a support foot 3 connected to the lower end of the frame 1, and a support frame 4 connected to the lifting plate 2; a fixed clamping plate 5, a mounting rod 6 detachably connected to the support frame 4, and the fixed clamping plate 5 connected to the mounting rod 6; a mounting base 7, which is flexibly connected to the support frame 4 and slidably connected to a limiting block 8; a movable clamping plate 9, which is connected to a connecting piece 10, and the connecting piece 10 is detachably connected to the mounting base 7 via the limiting block 8; a fixed clamping head 11, which is movably connected to the fixed clamping plate 5; a movable clamping head 12, which is flexibly connected to the movable clamping plate 9; and a water storage tank 13, which is connected to the frame 1 and has an inlet pipe 14 and an outlet pipe 15 connected to the water storage tank 13.

[0023] like Figure 1 , 2As shown, the frame 1 is connected to a telescopic mechanism 16, the lifting plate 2 is connected to a connecting seat 17, the telescopic mechanism 16 is connected to the connecting seat 17, the lifting plate 2 is connected to a guide seat 18, the frame 1 is connected to a positioning seat 19, the guide seat 18 is connected to a guide cylinder 20, the positioning seat 19 is provided with a guide insertion hole, and the guide cylinder 20 is inserted into the guide insertion hole.

[0024] like Figure 3 , 4 As shown, the support frame 4 is provided with a guide rail 21, and the connector 10 is inserted into the guide rail 21. The support frame 4 is connected to a telescopic mechanism 22, which is connected to one end of the mounting base 7. The other end of the mounting base 7 is provided with a mounting groove 23. The opposite groove surfaces of the mounting groove 23 are provided with guide grooves 24. One end of the limiting pressure block 8 is inserted into the guide groove 24, and the other end of the limiting pressure block 8 is provided with a feeding inclined surface 25. The guide groove 24 is connected to a guide rod 26, and the guide rod 26 is sleeved with an elastic mechanism 27. One end of the elastic mechanism 27 is connected to the guide groove 24, and the other end of the elastic mechanism 27 is connected to the limiting pressure block 8.

[0025] like Figure 5 As shown, the mounting slot 23 is connected to the limiting plate 28, and the connector 10 is provided with a limiting slot 29, and the limiting plate 28 is inserted into the limiting slot 29.

[0026] like Figure 4 , 5 As shown, each of the limiting pressure blocks 8 is connected to a linkage seat 30. The linkage seat 30 is provided with a connecting groove 31. The connecting groove 31 is connected to a rotating rod 32. The rotating rod 32 is provided with a locking rod 33. One end of the locking rod 33 is provided with a rotating hole. The rotating rod 32 is inserted into the rotating hole. The other end of the locking rod 33 is provided with a mounting hole. A support rod 34 is inserted into the mounting hole. The end face of the support rod 34 is provided with a limiting screw hole. The limiting screw hole is threadedly connected to a limiting screw rod 35.

[0027] like Figure 3 As shown, the support frame 4 is connected to a fixing block 36, the fixing block 36 is provided with a mounting screw hole, the mounting rod 6 is inserted into the guide slide 24, and the mounting rod 6 is threadedly connected to the mounting screw hole.

[0028] like Figure 3 , 4 As shown in Figure 5, the side of the fixed clamping plate 5 is provided with a movable groove 37, and a guide rod 38 is inserted into the movable groove 37. The fixed clamping head 11 is inserted into the other end of the guide rod 38. The guide rod 38 is sleeved with an elastic mechanism 39. One end of the elastic mechanism 39 is connected to the movable groove 37, and the other end of the elastic mechanism 39 is connected to the fixed clamping head 11.

[0029] like Figure 3 , 4As shown in Figure 5, the end face of the movable clamping plate 9 is provided with a movable groove 40, a guide rod 41 is inserted into the movable groove 40, the movable clamping head 12 is inserted into the other end of the guide rod 41, and an elastic mechanism 42 is sleeved on the guide rod 41. One end of the elastic mechanism 42 is connected to the movable groove 40, and the other end of the elastic mechanism 42 is connected to the movable clamping head 12.

[0030] like Figure 1-5 As shown: Telescopic mechanism 16 and telescopic mechanism 22 both adopt existing cylinder structures, while elastic mechanism 1 27, elastic mechanism 2 39 and elastic mechanism 3 42 all adopt existing spring structures.

[0031] Mounting base 7 is connected to mounting block 43. Support frame 4 has through hole. Telescopic part of telescopic mechanism 22 passes through the through hole and connects to mounting block 43, so that telescopic mechanism 22 drives mounting base 7 to move up and down.

[0032] Both the fixed chuck 11 and the movable chuck 12 are made of a composite material of flexible rubber and high-strength plastic to improve contact friction and protect the surface of the water tank.

[0033] Both the inlet pipe 14 and the outlet pipe 15 are connected to external water pumps (not shown in the figure) for the delivery of the test liquid.

[0034] The support frame 4 is connected to a guide mounting rod 44, the guide slide rail 21 is provided with a positioning screw hole 45, and the connector 10 is provided with a positioning through hole. The guide mounting rod 44 passes through the positioning through hole and is threadedly connected to the positioning screw hole 45, so that the connector 10 can move in a guiding manner within the guide slide rail 21.

[0035] In use: Water is supplied to the storage tank 13 through the inlet pipe 14. The water tank is inserted into the fixed clamping plate 5. The telescopic mechanism 22 is activated so that the movable clamping plate 9 cooperates with the fixed clamping plate 5 to clamp the water tank. The fixed clamping head 11 and the movable clamping head 12 stably clamp the water tank. Then, the telescopic mechanism 16 is activated so that the lifting plate 2 is lowered under the guidance of the guide cylinder 20 to enter the immersion operation. After the test, the water is discharged through the outlet pipe 15 to prevent the water from becoming turbid and affecting the test.

[0036] Mold Replacement: Press down the locking rod 33 to allow the limiting block 8 to move out of the mounting groove 23, allowing the limiting insert 28 to separate from the limiting slot 29. Then remove the old connector 10 and moving clamp 9. During installation, pass the connector 10 of the new moving clamp 9 through the guide rail 21 and press it into the mounting groove along the guide slope 25. The limiting insert 28 is inserted into the limiting slot 29. The limiting block 8 automatically resets and limits the connector 10 under the action of the elastic mechanism 27. The guide mounting rod 44 passes through the positioning through hole and is threaded into the positioning screw hole 45. Rotate the mounting rod 6 to remove the old mounting rod 6 and fixed clamp 5, and screw in the new mounting rod 6 and fixed clamp 5 again until the fixed clamp 5 is placed horizontally and the fixed chuck 12 and moving chuck 12 are arranged vertically opposite each other, completing the mold replacement.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mold for water tank immersion testing, characterized in that, include The frame (1) has a lifting plate (2) connected to the upper end of the frame (1), a support foot (3) connected to the lower end of the frame (1), and a support frame (4) connected to the lifting plate (2). Fixed clamping plate (5), the support frame (4) is detachably connected to mounting rod (6), the fixed clamping plate (5) is connected to mounting rod (6); Mounting base (7), which is vertically connected to the support frame (4), and the mounting base (7) is slidably connected to the limit block (8). A movable clamping plate (9) is connected to a connector (10), and the connector (10) is detachably connected to the mounting base (7) through a limiting pressure block (8); Fixed chuck (11), which is movably connected to fixed clamping plate (5); A movable chuck (12) is vertically connected to a movable clamping plate (9); Water storage tank (13) is connected to frame (1) and water storage tank (13) is connected to water inlet pipe (14) and water outlet pipe (15).

2. The mold for water tank immersion testing according to claim 1, characterized in that, The frame (1) is connected to a telescopic mechanism (16), the lifting plate (2) is connected to a connecting seat (17), the telescopic mechanism (16) is connected to the connecting seat (17), the lifting plate (2) is connected to a guide seat (18), the frame (1) is connected to a positioning seat (19), the guide seat (18) is connected to a guide cylinder (20), the positioning seat (19) is provided with a guide insertion hole, and the guide cylinder (20) is inserted into the guide insertion hole.

3. The mold for water tank immersion testing according to claim 1, characterized in that, The support frame (4) is provided with a guide rail (21), the connector (10) is inserted into the guide rail (21), the support frame (4) is connected to a telescopic mechanism (22), the telescopic mechanism (22) is connected to one end of the mounting base (7), the other end of the mounting base (7) is provided with a mounting groove (23), the opposite groove surfaces of the mounting groove (23) are provided with guide grooves (24), one end of the limiting pressure block (8) is inserted into the guide groove (24), the other end of the limiting pressure block (8) is provided with a feeding inclined surface (25), the guide groove (24) is connected to a guide rod (26), the guide rod (26) is sleeved with an elastic mechanism (27), one end of the elastic mechanism (27) is connected to the guide groove (24), and the other end of the elastic mechanism (27) is connected to the limiting pressure block (8).

4. The mold for water tank immersion testing according to claim 3, characterized in that, The mounting slot (23) is connected to a limiting insert plate (28), and the connector (10) is provided with a limiting slot (29). The limiting insert plate (28) is inserted into the limiting slot (29).

5. A mold for water tank immersion testing according to claim 1 or 3, characterized in that, Each of the limiting pressure blocks (8) is connected to a linkage seat (30). The linkage seat (30) is provided with a connecting groove (31). The connecting groove (31) is connected to a rotating rod (32). The rotating rod (32) is provided with a locking rod (33). One end of the locking rod (33) is provided with a rotating hole. The rotating rod (32) is inserted into the rotating hole. The other end of the locking rod (33) is provided with a mounting hole. The mounting hole is inserted into a support rod (34). The end face of the support rod (34) is provided with a limiting screw hole. The limiting screw hole is threadedly connected to a limiting screw rod (35).

6. The mold for water tank immersion testing according to claim 1, characterized in that, The support frame (4) is connected to a fixing block (36), the fixing block (36) is provided with a mounting screw hole, the mounting rod (6) is inserted into the guide groove (24), and the mounting rod (6) is threadedly connected to the mounting screw hole.

7. The mold for water tank immersion testing according to claim 1, characterized in that, The side of the fixed clamping plate (5) is provided with a movable groove (37), a guide rod (38) is inserted into the movable groove (37), the fixed clamp (11) is inserted into the other end of the guide rod (38), the guide rod (38) is sleeved with an elastic mechanism (39), one end of the elastic mechanism (39) is connected to the movable groove (37), and the other end of the elastic mechanism (39) is connected to the fixed clamp (11).

8. The mold for water tank immersion testing according to claim 1, characterized in that, The end face of the movable clamp (9) is provided with a movable groove two (40), and a guide rod two (41) is inserted into the movable groove two (40). The movable clamp (12) is inserted into the other end of the guide rod two (41). The guide rod two (41) is sleeved with an elastic mechanism three (42). One end of the elastic mechanism three (42) is connected to the movable groove two (40), and the other end of the elastic mechanism three (42) is connected to the movable clamp (12).

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