阅读说明：本技术 一种充磁磁头水冷循环系统及其使用方法 (Magnetizing magnetic head water cooling circulation system and use method thereof ) 是由 陈锦华 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种充磁磁头水冷循环系统及其使用方法,包括：操作板,所述操作板的顶部固定安装有水冷机构,所述操作板的外壁两侧活动设置有制动机构,水泵产生的气压使截流环箱的内部压强增大,并将冷却液冲击到引流管A和引流管B通过两者间的运输管产生闭合回路,冷却液通过运输管的内部后,降低表面的温度,并作用于连接其上的传导铁块,低温使接触其上的承接筒使内部一种处于较为合适的温度范围,对绕线套筒上的感应铜线和其他结构进行有效降温,利用承接筒地全面覆盖性解决了现有设备接触面积不充分的问题,使线圈表面通过先处理发热区域较为严重的地方,而忽略部分区域热量堆积,进而降低塑料支撑结构发生。(The invention discloses a water-cooling circulation system of a magnetizing magnetic head and a use method thereof, wherein the water-cooling circulation system comprises: the top of the operating plate is fixedly provided with a water cooling mechanism, two sides of the outer wall of the operating plate are movably provided with a braking mechanism, the pressure inside the intercepting ring box is increased by the air pressure generated by the water pump, and the cooling liquid is impacted to the drainage tube A and the drainage tube B to generate a closed loop through the conveying tube between the drainage tube A and the drainage tube B, the temperature of the surface of the cooling liquid is reduced after the cooling liquid passes through the inner part of the conveying tube, and acts on the conductive iron block connected with the bearing cylinder, the low temperature makes the bearing cylinder contacted with the bearing cylinder keep the inner part in a more proper temperature range, the induction copper line and other structures on the winding sleeve are effectively cooled, the problem that the contact area of the existing equipment is insufficient is solved by utilizing the comprehensive coverage of the bearing sleeve, the coil surface is enabled to heat a relatively serious place in a region through previous treatment, heat accumulation in a partial region is ignored, and then the occurrence of a plastic supporting structure is reduced.)

1. A water cooling circulation system for a magnetizing magnetic head is characterized in that: the method comprises the following steps: the water cooling device comprises an operation plate (1), wherein a water cooling mechanism (3) is fixedly arranged at the top of the operation plate (1), and braking mechanisms (7) are movably arranged on two sides of the outer wall of the operation plate (1);

the water-cooling mechanism (3) comprises a cut-off ring box (31), an installation sleeve (32) is fixedly installed on the inner surface wall of the cut-off ring box (31), a plurality of conducting iron blocks (33) with equal sizes are fixedly installed on the inner surface wall of the installation sleeve (32), a plurality of bearing tubes (34) are fixedly installed between the inner surface walls of the conducting iron blocks (33), a winding sleeve (35) is arranged inside the bearing tube (34), a plurality of induction copper wires (36) are fixedly arranged on the outer surface of the winding sleeve (35), the outer surfaces of the induction copper wires (36) are in contact with the inner surface wall of the bearing tube (34), a plurality of round holes are formed in the outer surface wall of each conducting iron block (33) and the inner surface wall of the bearing tube (34), the inner surface walls of the round holes are fixedly installed with a conveying tube (37), and a plurality of liquid outlet ends of the conveying tube (37) are fixedly sleeved with sealing rings A (310), the liquid inlet ends of the conveying pipes (37) are fixedly sleeved with sealing rings B (311), the rear surface of the intercepting ring box (31) is fixedly communicated with a plurality of drainage pipes A (38), the liquid outlet end of each drainage pipe A (38) is fixedly inserted into the sealing ring B (311), the liquid outlet end of each drainage pipe A (38) is communicated with the liquid inlet pipe of the conveying pipe (37), the front surface of the intercepting ring box (31) is fixedly communicated with a plurality of drainage pipes B (39), the liquid inlet end of each drainage pipe B (39) is fixedly inserted into the sealing ring A (310), and the liquid inlet end of each drainage pipe B (39) is communicated with the liquid outlet end of the conveying pipe (37);

the brake mechanism (7) comprises two mounting grooves D (71), two a set of slide holes are formed in the top of the inner wall of each mounting groove D (71), the number of each set of slide holes is three, and six slide bars (72) are movably inserted into the inner surface wall of each slide hole.

2. The water cooling circulation system for the magnetizing head as claimed in claim 1, wherein: the top fixed mounting of operation panel (1) has metal support frame (2), mounting groove C (4) have all been seted up to the obverse surface and the rear surface of metal support frame (2).

3. The water cooling circulation system for the magnetizing head as claimed in claim 2, wherein: two the inner wall of mounting groove C (4) is fixed mounting respectively has a set of line section of thick bamboo A (5) and a line section of thick bamboo B (6), and is a set of circular telegram jack has all been seted up on the positive surface of every of line section of thick bamboo A (5), and is a set of the back surface of every of line section of thick bamboo B (6) is all fixed to be inserted and is equipped with the circular telegram contact pin.

4. The water cooling circulation system for the magnetizing head as claimed in claim 1, wherein: the fixed intercommunication of exterior wall of ring case (31) dams has two control tubes (312), mounting groove A (313) and mounting groove B (315) have been seted up respectively at the top of operation panel (1), the inner wall bottom fixed mounting of mounting groove A (313) has the backup pad, and the top fixed mounting of backup pad has water pump (314), two the feed liquor end of control tube (312) is fixed respectively and is linked together in the both sides of water pump (314) outer wall, the inner wall bottom fixed mounting of mounting groove B (315) has liquid reserve tank (316), the input of water pump (314) is linked together through outer takeover and liquid reserve tank (316).

5. The water cooling circulation system for the magnetizing head as claimed in claim 1, wherein: two sets of equal fixed mounting has connecting plate (73), two between the bottom of slide bar (72) wherein every group connecting plate (73) equal activity is arranged in the inside of mounting groove D (71), two the equal fixed mounting in bottom of connecting plate (73) has L type frame (74), two fixed mounting has T type bottom plate (75), two between the inner wall both sides of L type frame (74) all weld between the inner wall top of every top of connecting plate (73) and mounting groove D (71) has a set of spring (76), and the equal movable sleeve of interior table wall of every spring (76) of every group establishes the surface of slide bar (72).

6. The use method of the water cooling circulation system of the magnetizing head is characterized by comprising the following steps: a magnetizing head water cooling circulation system according to any one of claims 1 to 5 is used, comprising the steps of:

s1, starting a water pump (314) fixedly installed in the installation groove A (313), and conveying the refrigerant liquid in the installation groove B (315) into the intercepting ring box (31) through the control pipe (312);

s2, a conduction iron block (33) acting on the inner wall of the receiving cylinder (34) by utilizing the connectivity of the drainage tube A (38), the drainage tube B (39) and the conveying tube (37);

s3, in the whole operation process of the device, the speed of the water pump (314) transferring liquid to the inside of the control pipe (312) is equal, the generated swing frequency is approximately equal, and the balance is broken through the movement of the sliding rod (72) in the sliding hole;

s4, in the process of the movement of the sliding rod (72), the spring (76) between the connecting plate (73) and the mounting groove D (71) is pressed to provide a buffering force for the device.

7. The use method of the water cooling circulation system of the magnetizing head as claimed in claim 6, wherein: in the step S2, the refrigerating fluid flowing in the conveying pipe (37) continuously reduces the internal temperature, so that the conducting iron block (33) is cooled, the low temperature is transferred to the interior of the receiving cylinder (34), and the induction copper wire (36) and the winding sleeve (35) are cooled.

8. The use method of the water cooling circulation system of the magnetizing head as claimed in claim 6, wherein: in step S4, the compression spring 76 returns the T-shaped bottom plate (75) connected to the L-shaped frame (74) by the same amount of reverse thrust.

Technical Field

The invention relates to the technical field of magnetizing magnetic head equipment, in particular to a water-cooling circulation system of a magnetizing magnetic head and a use method thereof.

Background

Magnetizing to magnetize magnetic material or increase magnetism of magnet with insufficient magnetism is carried out by placing object to be magnetized in magnetic field formed by coil through which direct current passes, and magnetizing direction can be divided into thickness magnetizing and radial magnetizing. When affected by external energy, such as heating and impact, the magnetic distance directions of magnetic domains become inconsistent, the magnetism is weakened or lost, and at the moment, the magnetic field is demagnetized, and the magnetic field needs to be charged to maintain the original property. The peak value of the discharge pulse current can reach tens of thousands of amperes. This current pulse generates a strong magnetic field in the coil, which permanently magnetizes the hard magnetic material placed in the coil. The peak value of the pulse current is extremely high when the capacitor of the magnetizing apparatus works, and the performance requirement on the capacitor to withstand the impact current is very high.

The existing magnetizing head water cooling circulation system is used in a magnetizing device, copper wires outside a magnetic ring can generate energy loss and generate a large amount of heat in the process of electronic impact, the connecting structure part inside the device is made of plastic materials, the copper wires are easy to melt under the influence of high temperature, but the existing water cooling device is limited in coverage area, most of the copper wires are operated in a higher area aiming at heat release, partial coil area cannot be processed, heat is accumulated, the damage rate of a component is accelerated, the influence of the same frequency generated by a node in the middle of water pipe transportation is not considered in the existing device, the resonance phenomenon is further caused, and the hollow structure of a water pipe can be broken in a large area.

Therefore, we propose a water cooling circulation system for a magnetizing head and a method for using the same so as to solve the problems mentioned above.

Disclosure of Invention

The invention aims to provide a water-cooling circulation system of a magnetizing magnetic head and a use method thereof, which are used for solving the problems that the contact area is insufficient, the surface of a coil passes through a place with a serious heating area and neglects heat accumulation of partial area, the equipment covers the outer wall of the whole coil through the surface of the structure, the synchronous treatment is realized, and the melting of a plastic supporting structure is reduced.

In order to achieve the purpose, the invention provides the following technical scheme: a water cooling circulation system for a magnetizing head comprises: the water cooling mechanism is fixedly arranged at the top of the operating plate, and the braking mechanisms are movably arranged on two sides of the outer wall of the operating plate;

the water cooling mechanism comprises a cutoff ring box, wherein an installation sleeve is fixedly installed on the inner surface wall of the cutoff ring box, a plurality of conducting iron blocks with equal sizes are fixedly installed on the inner surface wall of the installation sleeve, a bearing cylinder is fixedly installed between the inner surface walls of the conducting iron blocks, a winding sleeve is arranged inside the bearing cylinder, a plurality of induction copper wires are fixedly arranged on the outer surface of the winding sleeve, the outer surfaces of the induction copper wires are all contacted with the inner surface wall of the bearing cylinder, round holes are formed between the outer surface wall of each conducting iron block and the inner surface wall of the bearing cylinder, conveying pipes are fixedly installed on the inner surface walls of the round holes, sealing rings A are fixedly sleeved at the liquid outlet ends of the conveying pipes, sealing rings B are fixedly sleeved at the liquid inlet ends of the conveying pipes, and a plurality of drainage pipes A are fixedly communicated with the rear surface of the cutoff ring box, the liquid outlet end of each of the plurality of drainage tubes A is fixedly inserted into the sealing ring B, the liquid outlet end of each drainage tube A is communicated with the liquid inlet pipe of the conveying pipe, the front surface of the intercepting ring box is fixedly communicated with the plurality of drainage tubes B, the liquid inlet end of each of the plurality of drainage tubes B is fixedly inserted into the sealing ring A, and the liquid inlet end of each drainage tube B is communicated with the liquid outlet end of the conveying pipe;

the brake mechanism comprises two mounting grooves D, wherein a group of sliding holes are formed in the top of the inner wall of each mounting groove D, the number of each group of sliding holes is three, and six sliding rods are movably inserted into the inner surface wall of each sliding hole.

Preferably, the top of the operating panel is fixedly provided with a metal support frame, and the front surface and the rear surface of the metal support frame are both provided with mounting grooves C.

Preferably, the inner walls of the two mounting grooves C are respectively and fixedly provided with a group of wire barrels A and a group of wire barrels B, a group of electrifying jacks are formed in the front surface of each wire barrel A, and an electrifying contact pin is fixedly inserted in the rear surface of each wire barrel B.

Preferably, the fixed intercommunication of exterior wall of ring case dams has two control tubes, mounting groove A and mounting groove B have been seted up respectively at the top of operation panel, mounting groove A's inner wall bottom fixed mounting has the backup pad, and the top fixed mounting of backup pad has the water pump, two the feed liquor end of control tube is fixed respectively and is linked together in the both sides of water pump outer wall, mounting groove B's inner wall bottom fixed mounting has the liquid reserve tank, the input of water pump is linked together through outer takeover and liquid reserve tank.

A use method of a water cooling circulation system of a magnetizing head comprises the following steps:

step one, starting a water pump fixedly installed in an installation groove A, and conveying the refrigerating fluid in the installation groove B into a cutoff ring box through a control pipe;

secondly, acting on the conduction iron block on the inner wall of the bearing cylinder by utilizing the connectivity of the drainage tube A, the drainage tube B and the conveying tube;

step three, in the whole operation process of the device, the rates of the liquid pump for transferring the liquid into the control pipe are equal, the generated swing frequencies are approximately equal, and the balance is broken through the movement of the sliding rod in the sliding hole;

and step four, in the moving process of the sliding rod, the spring between the connecting plate and the mounting groove D is extruded, and buffering force is provided for the device.

Preferably, in the second step, the refrigerating fluid flowing in the conveying pipe reduces the internal temperature, so that the conductive iron block is cooled, the low temperature is transferred to the inside of the receiving cylinder, and the induction copper wire and the winding sleeve are cooled.

Preferably, in the fourth step, the compression spring 76 makes the generated equal reverse thrust force reset the T-shaped bottom plate connected with the L-shaped frame.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention generates useless consumption by partial energy and dissipates by a heat conduction mode to cause overhigh temperature in partial areas, at the moment, a water pump fixedly arranged in an installation A is started to replenish cooling liquid to a liquid storage tank in an installation groove B in time, the cooling liquid is conveyed to the inside of the intercepting ring box through a control pipe to be carried by continuous adsorption of the water pump, the pressure inside the intercepting ring box is increased by the air pressure generated by the water pump, the cooling liquid impacts a drainage pipe A and the drainage pipe B to generate a closed loop through a conveying pipe between the drainage pipe A and the drainage pipe B, the temperature of the surface is reduced after the cooling liquid passes through the inside of the conveying pipe and acts on a conductive iron block connected with the drainage pipe, the bearing cylinder contacted with the bearing cylinder at low temperature enables the inside to be in a more proper temperature range, the induced copper wire and other structures on a winding sleeve are effectively cooled, and the problem of insufficient contact area of the existing equipment is solved by utilizing the comprehensive coverage of the bearing cylinder, the surface of the coil passes through a place with a serious heating area, and heat accumulation in partial areas is neglected, so that the melting of the plastic supporting structure is reduced.

2. According to the invention, the flow rates transmitted to the interior of the control pipe are basically equal according to the working rate of the water pump, and the differential shaking force tends to be balanced, during the period, the shaking force is firstly transmitted into the interior of the mounting groove D and acts on the slide rod on the connecting plate, so that the inner wall of the lower slide hole moves up and down, the balance performance during the period is damaged, and the phenomenon of resonance is avoided, and the breakage of the pipe body structure is avoided.

3. According to the invention, the springs in the connecting plate and the mounting groove D are compressed and stretched in the moving process of the sliding rod, so that the reaction force generated by the springs prevents the phenomenon of deformation caused by overlarge contact pressure between metals.

Drawings

FIG. 1 is a perspective view of a water cooling circulation system for a magnetizing head and a method for using the same;

FIG. 2 is a perspective view of the back view structure of FIG. 1 illustrating a water cooling circulation system for a magnetizing head and a method for using the same according to the present invention;

FIG. 3 is a perspective view of a water cooling circulation system for a magnetizing head according to the present invention and a method for using the same, showing a side structure of FIG. 1;

FIG. 4 is an enlarged perspective view of a portion A of FIG. 2 illustrating a water cooling circulation system for a magnetizing head and a method for using the same according to the present invention;

FIG. 5 is an enlarged view of a portion B of FIG. 3 illustrating a water cooling circulation system for a magnetizing head and a method for using the same according to the present invention.

In the figure: 1. an operation panel; 2. a metal support frame; 3. a water cooling mechanism; 31. a cut-off ring box; 32. installing a sleeve; 33. a conductive iron block; 34. a receiving cylinder; 35. a winding sleeve; 36. an induction copper wire; 37. a transport pipe; 38. a drainage tube A; 39. a drainage tube B; 310. a sealing ring A; 311. a seal ring B; 312. a control tube; 313. mounting grooves A; 314. a water pump; 315. mounting grooves B; 316. a liquid storage tank; 4. mounting a groove C; 5. a bobbin A; 6. a bobbin B; 7. a brake mechanism; 71. mounting grooves D; 72. a slide bar; 73. a connecting plate; 74. an L-shaped frame; 75. a T-shaped bottom plate; 76. a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In embodiment 1, please refer to fig. 1-5, the present invention provides a technical solution: a water cooling circulation system for a magnetizing head comprises: the top of the operation panel 1 is fixedly provided with a water cooling mechanism 3, and two sides of the outer wall of the operation panel 1 are movably provided with a braking mechanism 7.

According to fig. 1-4, the water cooling mechanism 3 includes a cutoff ring box 31, a mounting sleeve 32 is fixedly mounted on the inner surface wall of the cutoff ring box 31, a plurality of conducting iron blocks 33 with equal size are fixedly mounted on the inner surface wall of the mounting sleeve 32, a receiving cylinder 34 is fixedly mounted between the inner surface walls of the conducting iron blocks 33, a winding sleeve 35 is disposed inside the receiving cylinder 34, a plurality of induction copper wires 36 are fixedly disposed on the outer surface of the winding sleeve 35, the outer surfaces of the induction copper wires 36 are all in contact with the inner surface wall of the receiving cylinder 34, a circular hole is disposed between the outer surface wall of each of the conducting iron blocks 33 and the inner surface wall of the receiving cylinder 34, a conveying pipe 37 is fixedly mounted on the inner surface wall of each circular hole, a sealing ring a310 is fixedly sleeved on the liquid outlet end of each of the conveying pipe 37, a sealing ring B311 is fixedly sleeved on the liquid inlet end of each of the conveying pipe 37, a plurality of drainage pipes a38 is fixedly communicated with the rear surface of the cutoff ring box 31, the liquid outlet end of each drainage tube A38 is fixedly inserted in the sealing ring B311, the liquid outlet end of each drainage tube A38 is communicated with the liquid inlet end of the conveying pipe 37, the front surface of the cutoff ring box 31 is fixedly communicated with a plurality of drainage tubes B39, the liquid inlet end of each drainage tube B39 is fixedly inserted in the sealing ring A310, the liquid inlet end of each drainage tube B39 is communicated with the liquid outlet end of the conveying pipe 37, the top of the operating panel 1 is fixedly provided with a metal support frame 2, the front surface and the rear surface of the metal support frame 2 are respectively provided with a mounting groove C4, the inner walls of two mounting grooves C4 are respectively fixedly provided with a group of bobbins A5 and B6, the front surface of each bobbin A5 is respectively provided with a group of power-on jacks, the rear surface of each bobbin B6 is fixedly inserted with power-on pins, and the outer wall of the cutoff ring box 31 is fixedly communicated with two control tubes 312, mounting groove A313 and mounting groove B315 have been seted up respectively to the top of operation panel 1, and mounting groove A313's inner wall bottom fixed mounting has the backup pad, and the top fixed mounting of backup pad has water pump 314, and the feed liquor end of two control tubes 312 is fixed respectively and is communicate in the both sides of water pump 314 outer wall, and the inner wall bottom fixed mounting of mounting groove B315 has liquid reserve tank 316, and water pump 314's input is linked together through external pipe and liquid reserve tank 316.

The whole water cooling mechanism 3 achieves the following effects: firstly, moving the equipment to a designated working area, supporting the T-shaped bottom plate 75 and the contact surface well to prevent deviation, inserting the output end of an external data line into a power-on jack in a wire barrel A5 to act on an induction copper wire 36 in a winding sleeve 35, in the working process, electronically impacting the inside of the induction copper wire 36, generating useless consumption of partial energy according to energy conservation and dissipating the useless consumption in a heat conduction mode to cause overhigh temperature in a partial area, starting a water pump 314 fixedly arranged in a mounting groove A313 at the moment, replenishing cooling liquid to a liquid storage tank 316 in a mounting groove B315 in time, conveying the cooling liquid to the inside of a cutoff ring box 31 through a control pipe 312 to bear through continuous adsorption of the water pump 314, increasing the internal pressure of the cutoff ring box 31 through the air pressure generated by the water pump 314, impacting the cooling liquid to a drainage pipe 38 and a drainage pipe 39 to generate a closed loop through a conveying pipe 37 between the drainage pipe and the drainage pipe, the coolant liquid passes through the inside back of transport pipe 37, reduce the temperature on surface, and act on the conduction iron plate 33 of connecting it on, low temperature makes the bearing section of thick bamboo 34 that contacts on it make inside one be in comparatively suitable temperature range, the response copper line 36 and other structures on the winding sleeve 35 effectively cool down, the problem that current equipment area of contact is insufficient has been solved to the comprehensive coverability that utilizes bearing section of thick bamboo 34, make the coil surface through handling the comparatively serious place in the heating area earlier, and neglect the heat of partial region and pile up, and then reduce plastic support structure and take place to melt.

According to the drawings of fig. 1-3 and 5, the brake mechanism 7 comprises two mounting grooves D71, a group of slide holes are formed in the top of the inner wall of each of the two mounting grooves D71, the number of the slide holes in each group is three, slide bars 72 are movably inserted into the inner surface walls of the six slide holes, connecting plates 73 are fixedly mounted between the bottoms of each group of the two groups of slide bars 72, the two connecting plates 73 are movably arranged in the mounting grooves D71, L-shaped frames 74 are fixedly mounted at the bottoms of the two connecting plates 73, T-shaped bottom plates 75 are fixedly mounted between the two sides of the inner wall of each L-shaped frame 74, a group of springs 76 are welded between the top of each of the two connecting plates 73 and the top of the inner wall of the mounting groove D71, and the inner surface wall of each group of each spring 76 is movably sleeved on the outer surface of each slide bar 72.

The effect that its whole arrestment mechanism 7 reaches is: during the operation of the equipment, according to the working speed of the water pump 314, the flow speed transmitted to the inside of the control pipe 312 is basically equal, and the generated shaking force tends to be balanced, during the period, the shaking force is firstly transmitted into the inside of the mounting groove D71 and acts on the sliding rod 72 on the connecting plate 73 to enable the inner wall of the lower sliding hole to move up and down, the balance performance during the period is damaged, and the phenomenon of resonance is avoided from occurring to cause the breakage of the pipe body structure.

Embodiment 2, the present invention further provides a method for using a water cooling circulation system for a magnetizing head, including the following steps:

the method comprises the following steps: the water pump 314 fixedly installed in the installation groove A313 is started, and the refrigerant liquid in the installation groove B315 is delivered into the cutoff ring box 31 through the control pipe 312

Step two: the connectivity of the drainage tube A38, the drainage tube B39 and the conveying tube 37 is utilized to act on the conductive iron blocks 33 on the inner wall of the receiving barrel 34.

In the second step, the cooling liquid flowing continuously in the transport pipe 37 reduces the internal temperature, so that the conductive iron block 33 is cooled, the interior of the low-temperature conductive receiving cylinder 34 is cooled, and the induction copper wire 36 and the winding sleeve 35 are cooled.

Step three: the rate at which the pump 314 delivers liquid to the interior of the control tube 312 is equal during the operation of the entire device and the resulting oscillation frequency approaches equality, breaking this balance by the sliding rod 72 moving within the slide hole.

Step four: during the movement of the slide bar 72, the spring 76 between the connecting plate 73 and the mounting groove D71 is compressed to provide a damping force for the device.

Wherein: in step four, the compression spring 76 causes an equal amount of counter-thrust to be generated to return the T-shaped base plate 75 attached to the L-shaped bracket 74.

The method for using the water cooling circulation system of the magnetizing head mentioned in the embodiment is substantially the same as the implementation method, wherein the main distinguishing features of the method from the embodiment 1 are as follows: at the first step, the sealing ring A310 and the sealing ring B311 are sealed with the intercepting ring box 31 through the drainage tube A38 and the drainage tube B39, and at the fourth step, the spring 76 in the connecting plate 73 and the mounting groove D71 is compressed and stretched in the moving process of the sliding rod 72, and further the reaction force generated by the spring 76 prevents the phenomenon that the contact pressure between the metals is too large to cause deformation.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.