CN110667037B

CN110667037B - Fixed plate for injection mold convenient to installation and adjustment

Info

Publication number: CN110667037B
Application number: CN201910901266.6A
Authority: CN
Inventors: 白西平; 张云龙; 赵秋玲; 赵水
Original assignee: Qingdao Technical College
Current assignee: Hefei Longzhi Electromechanical Technology Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2021-08-20
Anticipated expiration: 2039-09-23
Also published as: CN110667037A

Abstract

The invention discloses a fixing plate for an injection mold, which is convenient to mount and adjust and relates to the technical field of part processing. This fixed plate for injection mold convenient to installation and adjustment, the package rubbing board body, the mounting hole that runs through both sides about self is seted up at the middle part of plate body, and is the equidistance around the mounting hole and encircle the form and inlay and be equipped with a plurality of pilot lamps, and the axial lead that uses the mounting hole in the plate body is the equidistance and encircles the form and seted up a plurality of first cavities and second cavity as the axle center, and the distance between first cavity and the mounting hole axial lead is less than the distance between second cavity and the mounting hole axial lead. This fixed plate for injection mold convenient to installation and adjustment, the terrace die carries out the straightness that hangs down that lasts to the terrace die through straightness detection mechanism that hangs down at the in-process of embedding fixed plate to avoid appearing because the great condition that influences final installation effect of straightness deviation hangs down in the installation, and then make injection-moulded's job schedule effectively improve.

Description

Fixed plate for injection mold convenient to installation and adjustment

Technical Field

The invention relates to the technical field of part processing, in particular to a fixing plate for an injection mold, which is convenient to mount and adjust.

Background

In the process of producing parts, the injection mold needs to firstly complete the assembly of the male mold and the fixing plate, and the fixing plate is used for fixing the male mold, so that the male mold is connected with the sliding block of the punch press and used for punching or blanking. The assembly method of the male die and the fixed plate is generally riveting installation, the specific installation steps are that the fixed plate is placed on a cushion block with equal height, the male die is placed in an installation hole and is slowly pressed in a press machine, the verticality of the male die is simultaneously checked in the pressing-in process, so that the male die can be timely adjusted through manual work when deviation occurs, simultaneously, after the pressing-in is completed, the end face of the male die needs to be riveted through a chisel and a hammer, and finally, the end face of the male die is ground flat on a grinding machine, so that the installation of the male die in the fixed plate is completed. In the process, more time is consumed in a manual adjustment mode, meanwhile, corresponding equipment is required to be used for detecting the verticality in the adjustment process, the time cost is increased while manpower is increased, and the installation efficiency of the whole set of die is delayed, so that the processing efficiency of parts is influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the fixing plate for the injection mold, which is convenient to install and adjust, and can be used for quickly adjusting while detecting the installation verticality of the male mold and the fixing plate in real time, so that the investment of labor and time is saved.

In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a fixed plate for injection mold convenient to installation and adjustment, the package rubbing board body, the mounting hole that runs through both sides about self is seted up at the middle part of plate body, and is the equidistance around the mounting hole and encircle the form and inlay and be equipped with a plurality of pilot lamps, and the internal axial lead that uses the mounting hole of plate is the equidistance around the form and has seted up a plurality of first cavities and second cavity as the axle center, and the distance between first cavity and the mounting hole axial lead is less than the distance between second cavity and the mounting hole axial lead, installs the straightness detection mechanism that hangs down and hangs down straightness adjustment mechanism in first cavity and the second cavity respectively.

Preferably, the verticality detection mechanism comprises a balloon, a touch rod, a lantern ring, a conductive rod, a first storage battery, a first conductive sheet, a T-shaped rod, a first conductive wire, a second conductive wire, a hollow ball sleeve, a movable ball, a connecting rod, a magnetic cone, a magnetic sheet and a fixing sheet, wherein the number of the balloon is three, the three balloons are embedded between the first cavity and the mounting hole in a row shape at equal intervals, the left side and the right side of the balloon are respectively positioned in the first cavity and the mounting hole, one end of the touch rod is fixedly connected to the center of the inner side wall of the balloon, the other end of the touch rod penetrates through one side of the balloon positioned in the first cavity and is sleeved with the lantern ring, the back of the lantern ring is fixedly connected with the inner wall of the first cavity, one end of the touch rod positioned in the first cavity is fixedly connected with the side face of the conductive rod, the inner bottom of the first cavity is fixedly connected with the first storage battery, and the positive electrode of the first storage battery is electrically connected with the first conductive sheet, the first conducting strip is positioned at one side of the bottom end of the conducting rod, the middle part of one side of the conducting rod, which is opposite to the contact rod, is fixedly connected with a T-shaped rod, the top end of the conducting rod is fixedly connected with one end of a first conducting wire, the other end of the first conducting wire penetrates through the inner top of the first cavity and is electrically connected with the input end of an indicator lamp, a second conducting wire is bonded in the first cavity, the top end of the second conducting wire penetrates through the inner top of the first cavity and is electrically connected with the output end of the indicator lamp, the bottom end of the second conducting wire is electrically connected with the negative electrode of a first storage battery, the top of a hollow ball sleeve is fixedly connected with the inner top of the first cavity, a movable ball is embedded in a hollow ball sleeve, the top end of a connecting rod penetrates through the bottom of the hollow ball sleeve and is fixedly connected with the bottom of the movable ball, a magnetic cone is fixedly connected with the bottom end of the connecting rod, the magnetic sheet is arranged under the magnetic cone, and the bottom of the fixed sheet is fixedly connected with the top of the fixed sheet, the middle point of the magnetic cone and the central axis of the magnetic sheet are positioned on the same longitudinal axis, the magnetic force between the magnetic sheet and the magnetic cone is attracted, and the connecting rod with the moving capability is enabled to quickly reach a vertical state through the effect of the attraction between the magnetic sheet and the magnetic cone.

Preferably, the conducting rod is parallel with the connecting rod, and the horizontal distance between conducting rod bottom and the conducting strip is less than the horizontal distance between connecting rod and the T shape pole, parallel mode of setting makes the sacculus homoenergetic that is in different level can promote the conducting rod when receiving the extrusion of terrace die inclined plane to through the difference on the horizontal distance, make at the terrace die straightness normal condition that hangs down the T shape pole only with the connecting rod between keep laminating, if hang down the straightness abnormal result in to touch the pole when excessively removing, then can make conducting rod and first conducting strip contact, thereby open the pilot lamp.

Preferably, the T-shaped rod is T-shaped relative to one end of the connecting rod, an opening with the diameter being two thirds of the diameter of the movable ball is formed in the bottom of the hollow ball sleeve, and the connecting rod has a certain moving range when being pushed due to the opening design.

Preferably, the verticality adjusting mechanism comprises a micro air pump, an air inlet channel, an air guide tube, a second storage battery, a third conductive wire, a second conductive sheet, a moving rod, a fixing piece and a return spring, the micro air pump is fixedly installed at the top of the inner side wall of the second cavity, an air inlet of the micro air pump is communicated with the air inlet channel, the air inlet channel is arranged at the top of the plate body and communicated with the second cavity, the top end of the air guide tube is fixedly connected with an air outlet of the micro air pump, the bottom end of the air guide tube penetrates through the bottom of the second cavity and extends towards the installation hole, the air guide tube is bent upwards and sequentially connected with the back of each balloon when extending to the lower part of the balloon, an inner cavity of the air guide tube is communicated with an inner cavity of the balloon, the second storage battery is fixedly connected at the bottom of the second cavity, the negative pole of the second storage battery is electrically connected with the output end of the micro air pump, and the input end of the micro air pump and the positive pole of the second storage battery are both electrically connected with the third conductive wire, and the relative one end of two third conductor wires is pressed close to each other and is located the right side of second conductor wire, one side fixed connection of second conductor wire back to the back of the body second conductor wire is in the one end of carriage release lever, and the other end of carriage release lever runs through the second cavity and extends to the one side of the interior nearly connecting rod of first cavity, the carriage release lever is located the same appearance of second cavity and is located the mounting, mounting fixed connection is on the inside wall of second cavity, and be provided with reset spring in the mounting, reset spring suit is on the carriage release lever, and reset spring's left end and carriage release lever fixed connection, reset spring's right-hand member and the inner wall fixed connection of mounting, reset spring's elasticity is greater than the dead weight of carriage release lever, thereby make the carriage release lever can reset based on reset spring's elasticity under non-use state, reach the effect of similar switch in the straightness adjustment mechanism that hangs down.

Preferably, the shortest horizontal distance between the second conductive sheet and the third conductive wire is equal to the shortest horizontal distance between the moving rod and the connecting rod, and the shortest horizontal distance is specifically one millimeter.

The invention provides a fixing plate for an injection mold, which is convenient to install and adjust. The method has the following beneficial effects:

(1) this fixed plate for injection mold convenient to installation and adjustment, the terrace die is at the in-process of embedding fixed plate, through straightness detection mechanism that hangs down to carry out the straightness detection that hangs down that lasts to the terrace die, in order to avoid in the installation because the great condition that influences final installation effect of straightness deviation that hangs down appears, straightness detection mechanism that hangs down is going on the in-process that detects to the terrace die straightness through its surrounding type's mounting means simultaneously, cooperate its warning function, can reach the effect that corresponding inclined position carried out the suggestion, thereby be convenient for the staff discovers fast and adjusts the straightness that hangs down.

(2) This fixed plate for injection mold convenient to installation and adjustment, when through straightness detection mechanism that hangs down to hang down in the terrace die installation, set up based on the cooperation of straightness adjustment mechanism that hangs down, can effectively carry out corresponding adjustment to the terrace die straightness that hangs down to adjust fast at the in-process that detects to the terrace die straightness that hangs down, in order to guarantee final installation quality, avoid causing the influence to injection-moulded.

(3) This fixed plate for injection mold convenient to installation and adjustment, through the straightness detection mechanism that hangs down with hang down adjustment mechanism's cooperation, effectively ensured the terrace die in the straightness that hangs down with the installation of plate body to guaranteed the follow-up mill flat effect to terrace die and plate body terminal surface, through the effective guarantee to the terrace die straightness that hangs down, and then make injection-moulded's job schedule effectively improve.

Drawings

FIG. 1 is a front cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure B in FIG. 1;

FIG. 4 is an enlarged view of the structure at C in FIG. 1 according to the present invention.

In the figure: 1 plate body, 2 mounting holes, 3 indicator lamps, 4 first cavities, 5 second cavities, 6 perpendicularity detection mechanisms, 7 perpendicularity adjusting mechanisms, 601 balloons, 602 touch rods, 603 lantern rings, 604 conducting rods, 605 first storage batteries, 606 first conducting strips, 607T-shaped rods, 608 first conducting wires, 609 second conducting wires, 610 hollow ball sleeves, 611 movable balls, 612 connecting rods, 613 magnetic cones, 614 magnetic sheets, 615 fixing sheets, 71 micro air pumps, 72 air inlet channels, 73 air guide tubes, 74 second storage batteries, 75 third conducting wires, 76 second conducting strips, 77 movable rods, 78 fixing pieces and 79 return springs.

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 of the embodiments.

Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a fixed plate for injection mold convenient to installation and adjustment, which comprises a plate body 1, the mounting hole 2 that runs through both sides about self is seted up at the middle part of plate body 1, and be the equidistance around the form and inlay and be equipped with a plurality of pilot lamps 3, it encircles the form and has seted up a plurality of first cavities 4 and second cavity 5 to be the equidistance around taking the axial lead of mounting hole 2 as the axle center in the plate body 1, the distance between first cavity 4 and the 2 axial leads of mounting hole is less than the distance between second cavity 5 and the 2 axial leads of mounting hole, install straightness detection mechanism 6 that hangs down and straightness adjustment mechanism 7 that hangs down in first cavity 4 and the second cavity 5 respectively.

The verticality detection mechanism 6 comprises a balloon 601, a contact rod 602, a collar 603, a conductive rod 604, a first storage battery 605, a first conductive sheet 606, a T-shaped rod 607, a first conductive wire 608, a second conductive wire 609, a hollow ball sleeve 610, a movable ball 611, a connecting rod 612, a magnetic cone 613, a magnetic sheet 614 and a fixing sheet 615, the number of the balloons 601 is three, the three balloons 601 are embedded between the first cavity 4 and the mounting hole 2 in a row shape at equal intervals, the left side and the right side of each balloon 601 are respectively positioned in the first cavity 4 and the mounting hole 2, one end of the contact rod 602 is fixedly connected to the center of the inner side wall of the balloon 601, the other end of the contact rod 602 penetrates through one side of the balloon 601 positioned in the first cavity 4 and is sleeved with the collar 603, the back surface of the collar 603 is fixedly connected with the inner wall of the first cavity 4, one end of the contact rod 602 positioned in the first cavity 4 is fixedly connected, a first storage battery 605 is fixedly connected to the inner bottom of the first cavity 4, a first conductive sheet 606 is electrically connected to the positive electrode of the first storage battery 605, the first conductive sheet 606 is located at one side of the bottom end of the conductive rod 604, a T-shaped rod 607 is fixedly connected to the middle of one side of the conductive rod 604, which is opposite to the contact rod 602, the top end of the conductive rod 604 is fixedly connected to one end of a first conductive wire 608, the other end of the first conductive wire 608 penetrates through the inner top of the first cavity 4 to be electrically connected to the input end of the indicator lamp 3, a second conductive wire 609 is adhered in the first cavity 4, the top end of the second conductive wire 609 penetrates through the inner top of the first cavity 4 to be electrically connected to the output end of the indicator lamp 3, the bottom end of the second conductive wire 609 is electrically connected to the negative electrode of the first storage battery 605, the top of the hollow ball sleeve 610 is fixedly connected to the inner top of the first cavity 4, and the movable ball 611 is embedded in the hollow ball sleeve 610, the top of connecting rod 612 runs through the bottom of hollow ball cover 610 and the bottom fixed connection of activity ball 611, magnetic cone 613 fixed connection is in the bottom of connecting rod 612, magnetic sheet 614 sets up under magnetic cone 613, and the bottom of magnetic sheet 614 and the top fixed connection of stationary blade 615, conducting rod 604 is parallel with connecting rod 612, and the horizontal distance between conducting rod 604 bottom and the conducting strip 606 equals with the horizontal distance between connecting rod 612 and the T shape pole 607, the one end of the relative connecting rod 612 of T shape pole 607 is the T font, the bottom of hollow ball cover 610 is seted up the diameter and is the opening of two-thirds of activity ball 611 diameter.

The verticality adjusting mechanism 7 comprises a micro air pump 71, an air inlet channel 72, an air guide pipe 73, a second storage battery 74, a third conducting wire 75, a second conducting strip 76, a moving rod 77, a fixing piece 78 and a return spring 79, wherein the micro air pump 71 is fixedly installed at the top of the inner side wall of the second cavity 5, an air inlet of the micro air pump 71 is communicated with the air inlet channel 72, the air inlet channel 72 is arranged at the top of the plate body 1 and is communicated with the second cavity 5, the top end of the air guide pipe 73 is fixedly connected with an air outlet of the micro air pump 71, the bottom end of the air guide pipe 73 penetrates through the bottom of the second cavity 5 and extends towards the installation hole 2, the air guide pipe is bent upwards and is sequentially connected with the back of each balloon 601 when extending to the lower part of the balloon 601, the inner cavity of the air guide pipe 73 is communicated with the inner cavity of the balloon 601, the second storage battery 74 is fixedly connected at the bottom of the second cavity 5, and the negative pole of the second storage battery 74 is electrically connected with the output end of the micro air pump 71, the input end of the micro air pump 71 and the anode of the second battery 74 are electrically connected with third conductive wires 75, opposite ends of the two third conductive wires 75 are close to each other and located on the right side of the second conductive wire 76, one side of the second conductive wire 76 opposite to the third conductive wire 75 is fixedly connected with one end of a moving rod 77, the other end of the moving rod 77 penetrates through the second cavity 5 and extends to one side of the first cavity 4 close to the connecting rod 612, the moving rod 77 is located in the second cavity 5 and also located in a fixing member 78, the fixing member 78 is fixedly connected with the inner side wall of the second cavity 5, a return spring 79 is arranged in the fixing member 78, the return spring 79 is sleeved on the moving rod 77, the left end of the return spring 79 is fixedly connected with the moving rod 77, the right end of the return spring 79 is fixedly connected with the inner wall of the fixing member 78, the shortest horizontal distance between the second conductive wire 76 and the third conductive wire 75 is equal to the shortest horizontal distance between the moving rod 77 and the connecting rod 612, and the shortest horizontal distance is specifically one millimeter.

When the punch is used, the punch is inserted into the mounting hole 2, if the punch is continuously inserted, the inclined side of the punch extrudes the balloon 601 too much, the touch rod 602 is driven to move towards the first cavity 4 along the sleeve ring 603 in the deformation process of the balloon 601, so that the conductive rod 604 moves towards the first conductive sheet 606 and contacts with the first conductive sheet 606, a complete circuit is formed among the first storage battery 605, the first conductive sheet 606, the conductive rod 604, the first conductive wire 608, the indicator lamp 3 and the second conductive wire 609, the indicator lamp 3 is powered by the first storage battery 605, the horizontal extrusion distance of the side surface of the punch to the balloon 601 is equal to the shortest horizontal distance between the T-shaped rod 607 and the connecting rod 612 when the punch is inclined, the T-shaped rod 607 and the connecting rod 612 are in excessive contact when the punch is inclined, so that the connecting rod 612 is pushed to contact with the moving rod 77 and is pushed to move towards the second cavity 5, when the moving rod 77 moves, the second conducting strip 76 is driven to be in contact with the two third conducting wires 75, so that the second storage battery 74 supplies power to the micro air pump 71 to enable the micro air pump to work, external air is pumped into the air duct 73 through the air inlet duct 72 and is discharged into the balloons 601, and the balloons 601 in the same row are simultaneously expanded to support the inclined side of the male die to be vertical.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a fixed plate for injection mold convenient to installation and adjustment, includes plate body (1), its characterized in that: the middle part of the plate body (1) is provided with a mounting hole (2) penetrating through the upper side and the lower side of the plate body, a plurality of indicator lamps (3) are embedded around the mounting hole (2) in an equidistant surrounding manner, a plurality of first cavities (4) and second cavities (5) are arranged around the plate body (1) in an equidistant surrounding manner by taking the axial lead of the mounting hole (2) as the axis, the distance between the first cavities (4) and the axial lead of the mounting hole (2) is smaller than the distance between the second cavities (5) and the axial lead of the mounting hole (2), and a verticality detection mechanism (6) and a verticality adjusting mechanism (7) are respectively arranged in the first cavities (4) and the second cavities (5);

the verticality detection mechanism (6) comprises three balloons (601), a collision rod (602), a lantern ring (603), a conductive rod (604), a first storage battery (605), a first conductive sheet (606), a T-shaped rod (607), a first conductive wire (608), a second conductive wire (609), a hollow ball sleeve (610), a movable ball (611), a connecting rod (612), a magnetic cone (613), a magnetic sheet (614) and a fixing sheet (615), wherein the three balloons (601) are embedded between a first cavity (4) and a mounting hole (2) in a row shape at equal intervals, the left side and the right side of each balloon (601) are respectively positioned in the first cavity (4) and the mounting hole (2), one end of the collision rod (602) is fixedly connected to the center of the inner side wall of each balloon (601), the other end of the collision rod (602) penetrates through one side of each balloon (601) positioned in the first cavity (4) and is sleeved with the lantern ring (603), the back of the lantern ring (603) is fixedly connected with the inner wall of the first cavity (4), one end, located in the first cavity (4), of the touch rod (602) is fixedly connected with the side face of the conductive rod (604), the inner bottom of the first cavity (4) is fixedly connected with a first storage battery (605), the positive electrode of the first storage battery (605) is electrically connected with a first conductive sheet (606), the first conductive sheet (606) is located on one side of the bottom end of the conductive rod (604), the conductive rod (604) is fixedly connected with a T-shaped rod (607) opposite to the middle of one side of the touch rod (602), the top end of the conductive rod (604) is fixedly connected with one end of a first conductive wire (608), the other end of the first conductive wire (608) penetrates through the inner top of the first cavity (4) and is electrically connected with the input end of the indicator light (3), a second conductive wire (609) is adhered in the first cavity (4), and the top end of the second conductive wire (609) penetrates through the inner top of the first cavity (4) and is electrically connected with the output end of the indicator light (3) And then, the bottom end of the second conducting wire (609) is electrically connected with the negative electrode of the first storage battery (605), the top of the hollow ball sleeve (610) is fixedly connected with the inner top of the first cavity (4), the movable ball (611) is embedded in the hollow ball sleeve (610), the top end of the connecting rod (612) penetrates through the bottom of the hollow ball sleeve (610) and is fixedly connected with the bottom of the movable ball (611), the magnetic cone (613) is fixedly connected with the bottom end of the connecting rod (612), the magnetic sheet (614) is arranged right below the magnetic cone (613), and the bottom of the magnetic sheet (614) is fixedly connected with the top of the fixing sheet (615).

2. The fixing plate for injection mold easy to install and adjust as claimed in claim 1, wherein: the conductive rod (604) is parallel to the connecting rod (612), and the horizontal distance between the bottom end of the conductive rod (604) and the conductive sheet (606) is smaller than the horizontal distance between the connecting rod (612) and the T-shaped rod (607).

3. The fixing plate for injection mold easy to install and adjust as claimed in claim 1, wherein: one end of the T-shaped rod (607) opposite to the connecting rod (612) is T-shaped, and the bottom of the hollow ball sleeve (610) is provided with an opening with the diameter being two thirds of that of the movable ball (611).

4. The fixing plate for injection mold easy to install and adjust as claimed in claim 1, wherein: the verticality adjusting mechanism (7) comprises a micro air pump (71), an air inlet channel (72), an air guide pipe (73), a second storage battery (74), a third conducting wire (75), a second conducting strip (76), a moving rod (77), a fixing piece (78) and a return spring (79), wherein the micro air pump (71) is fixedly installed at the top of the inner side wall of the second cavity (5), an air inlet of the micro air pump (71) is communicated with the air inlet channel (72), the air inlet channel (72) is arranged at the top of the plate body (1) and communicated with the second cavity (5), the top end of the air guide pipe (73) is fixedly connected with an air outlet of the micro air pump (71), the bottom end of the air guide pipe (73) penetrates through the bottom of the second cavity (5) and extends towards the mounting hole (2), and when the air guide pipe extends to the lower part of the balloon (601), the air guide pipe is bent upwards and is sequentially connected with the back of each balloon (601), the inner cavity of the air duct (73) is communicated with the inner cavity of the balloon (601), the second storage battery (74) is fixedly connected to the bottom of the second cavity (5), the negative electrode of the second storage battery (74) is electrically connected with the output end of the miniature air pump (71), the input end of the miniature air pump (71) and the positive electrode of the second storage battery (74) are electrically connected with a third conducting wire (75), opposite ends of the two third conducting wires (75) are close to each other and are positioned on the right side of the second conducting wire (76), one side of the second conducting wire (76) opposite to the third conducting wire (75) is fixedly connected to one end of the moving rod (77), the other end of the moving rod (77) penetrates through the second cavity (5) and extends to one side of the first cavity (4) close to the connecting rod (612), and the moving rod (77) is positioned in the second cavity (5) and is also positioned in the fixing piece (78), mounting (78) fixed connection is on the inside wall of second cavity (5), and is provided with reset spring (79) in mounting (78), and reset spring (79) suit is on carriage release lever (77), and reset spring (79)'s left end and carriage release lever (77) fixed connection, the right-hand member of reset spring (79) and the inner wall fixed connection of mounting (78).

5. The fixing plate for injection mold easy to install and adjust as claimed in claim 4, wherein: the shortest horizontal distance between the second conductive sheet (76) and the third conductive wire (75) is equal to the shortest horizontal distance between the moving rod (77) and the connecting rod (612), and the shortest horizontal distance is specifically one millimeter.