CN111959143B

CN111959143B - Single-drive double-fixed stamp support with anti-magnetic and anti-theft functions

Info

Publication number: CN111959143B
Application number: CN202010764195.2A
Authority: CN
Inventors: 陆晓伟
Original assignee: Nanjing Yuzhi Intelligent Technology Co Ltd
Current assignee: Nanjing Yuzhi Intelligent Technology Co Ltd
Priority date: 2020-08-02
Filing date: 2020-08-02
Publication date: 2022-06-14
Anticipated expiration: 2040-08-02
Also published as: CN111959143A

Abstract

The invention provides a single-drive double-fixed stamp support with an anti-magnetic and anti-theft function, which comprises a shell, a double-output drive device and a stamp locking mechanism, wherein the shell is provided with a first end and a second end; the double-output driving device is horizontally arranged in the installation cavity, and output shafts of the double-output driving device are rigidly connected with the pin shaft which is arranged in the pin hole in a sliding mode and can push the pin shaft to axially extend and retract; the seal locking mechanism comprises a transmission assembly and a locking bolt, wherein the transmission assembly is connected with the pin shaft and can convert the linear motion of the pin shaft into circular motion, the locking bolt is arranged at the output end of the transmission assembly and is coaxial with the locking screw hole, and the head of the locking bolt is in threaded connection with the locking hole. The single-drive double-fixed seal support with the anti-magnetic and anti-theft functions has the advantages of compact structure, convenience in assembly, good locking effect and anti-theft and anti-disassembly effects, the double-locking function of the seal support and the seal body is realized through the single drive device, the production cost is reduced, the overall size is reduced, and the production cost is low.

Description

Single-drive double-fixed stamp support with anti-magnetic and anti-theft functions

Technical Field

The invention relates to a seal, in particular to a single-drive double-fixed seal support with an anti-magnetic and anti-theft function.

Background

The existing seal, especially the official seal, is the necessary office equipment that the unit or the legal person approve or prove the corresponding document validity, and the seal stamped on the document expresses the validity and authenticity of the document. Once the seal is lost, the seal is maliciously utilized by illegal personnel, and the serious consequence of directly or indirectly damaging the benefits of related personnel and institutions is caused, so that special personnel in a company generally manage the seal and are responsible for the use, preservation and maintenance of the seal. However, there are some special cases objectively, for example, some enterprises and public institutions borrow official seals, and seal managers cannot seal the seals at a predetermined place with seal persons; for example, the seal manager is on business, has a leave, and needs to use the seal, and the situation causes that the seal manager cannot ensure that the seal is used or has malicious use after being taken away, so that the intelligent seal appears on the market.

The traditional intelligent seal carries out identity recognition through a password or a fingerprint, and is activated after identity authorization to realize sealing; in order to improve the security of the intelligent seal, facilitate changing different seals at the same time, in order to reduce the use cost, set a slide in the body, it is used for installing the seal body, used for connecting with actuating mechanism in the body at the same time, there are locking devices between seal body and seal support, used for fixing the seal body on seal support, usually this locking device is realized locking or unclamping by the push-pull electromagnet, in order to change different seals conveniently, meanwhile, the actuating mechanism used for driving this support to move in order to realize stamping is also a push-pull electromagnet, when adopting the strong magnetism or Tesla coil to interfere externally, there is certain probability that can make the electromagnet act, when the push-pull electromagnet acting as actuating device acts, realize stamping, when the push-pull electromagnet acting as locking device acts, the locking device acts and makes the break away from, can realize the mandatory stamping when the seal is stolen, has great potential safety hazard.

Disclosure of Invention

(1) Technical problem to be solved

The invention aims to solve the technical problem of providing a single-drive double-fixed stamp support which can realize locking connection with a stamp sliding seat and a stamp body, has high safety coefficient and has an anti-magnetic and anti-theft function.

(2) Means for solving the problems

The invention provides a single-drive double-fixed stamp support with an anti-magnetic and anti-theft function, which comprises:

the side wall of the shell is provided with two pin holes which are horizontally arranged on two sides of the shell, the bottom surface of the shell is inwards concave and forms a seal installation cavity for installing a seal body, the side wall of the seal installation cavity is provided with two locking screw holes, the axis of each locking screw hole is parallel to the axis of each pin hole, and an installation cavity is formed in the shell;

the double-output driving device is horizontally arranged in the installation cavity, and output shafts of the double-output driving device are rigidly connected with the pin shaft which is arranged in the pin hole in a sliding mode and can push the pin shaft to axially extend and retract;

the seal locking mechanism comprises a transmission assembly and a locking bolt, wherein the transmission assembly is connected with the pin shaft and can convert the linear motion of the pin shaft into the circular motion, the locking bolt is arranged at the output end of the transmission assembly and is coaxial with the locking screw hole, and the head part of the locking bolt is in threaded connection with the locking hole;

when the pin shaft moves inwards, the locking bolt is driven to rotate and move inwards, when the pin shaft moves to the inner limit position, the locking bolt is located at the inner limit position, and the head of the locking bolt is located in the seal mounting cavity and used for fixing the seal body;

when the pin shaft moves outwards, the locking bolt is driven to rotate reversely and move outwards, when the end part of the pin shaft is flush with the side wall of the shell, the shell can be unlocked, and the head of the locking bolt is still positioned in the seal mounting cavity;

when the pin shaft moves to the outer limit position, the locking bolt is located at the outer limit position, the head of the locking bolt is located outside the seal mounting cavity, and at the moment, the seal body can be unlocked.

Furthermore, the locking bolt further comprises two limit switches, one limit switch is triggered when the locking bolt moves to the inner limit, and the other limit switch is triggered when the locking bolt moves to the outer limit

Furthermore, the transmission assembly comprises a driving gear and a speed change gear set, the driving gear and the pin hole are coaxially and rotatably installed in the shell, a shaft hole for allowing the pin shaft to penetrate is formed in the center of the driving gear, a protrusion is arranged in the shaft hole, a spiral guide groove for allowing the protrusion to be sleeved in is formed in the side wall of the pin shaft, when the pin shaft moves axially, the protrusion rotates along with the spiral guide groove so that linear motion is converted into circular motion, gear teeth are arranged at the tail of the locking bolt, and the speed change gear set is arranged between the gear teeth and the driving gear so as to accelerate speed.

Further, the casing internal fixation has the orientation locking screw and with the coaxial pin of locking screw, the both ends of locking bolt run through have the centre bore and the sliding fit be in on the pin, the locking bolt is including the gear body and the flank of screw of coaxial setting, the lateral wall of gear body is equipped with be used for being connected with drive assembly, and axial width is greater than the teeth of a cogwheel of locking bolt stroke, the both ends of gear body are equipped with the face that triggers that is used for triggering limit switch respectively.

Furthermore, an installation support used for installing the double-output driving device is arranged in the center of the installation cavity, two ends of the installation support are provided with vertically arranged strip-shaped grooves, and two ends of the double-output driving device are provided with positioning lugs which can be clamped into the strip-shaped grooves to realize positioning; and a supporting component is arranged between the side wall of the mounting bracket and the inner wall of the shell.

Further, the lateral wall of installation cavity is equipped with the mount pad, it is used for the installation to have seted up on the mount pad drive gear and the open mounting groove of lower extreme, the both sides of mounting groove are equipped with the boss, seted up on the boss with the coaxial first ring channel of pinhole, drive gear's both sides be equipped with the coaxial second ring channel of first ring channel, first ring channel with be equipped with bearing or self-lubricating gasket between the second ring channel.

Further, the dual-output driving device comprises a cylinder body, two sliding plugs are slidably arranged in the cylinder body, the cylinder body is divided into a left cavity, a middle cavity and a right cavity by the two sliding plugs, through holes communicated with the left cavity and the middle cavity or the middle cavity and the right cavity penetrate through two ends of the sliding plugs, a sliding plug rod is fixed on the sliding plugs, the sliding plug rod extends out of the cylinder body after penetrating through the left cavity or the right cavity, and magnetic fluid is filled in the cylinder body; and a first exciting coil, a second exciting coil and a third exciting coil are sequentially arranged outside the cylinder body along the axis direction.

Furthermore, the output shaft of the double-output driving device is provided with a limiting block for avoiding the rectangular shape of the output shaft rotating in the radial direction, and one end of the pin hole is provided with a rectangular limiting hole matched with the limiting block.

Furthermore, the outer wall of the shell and/or the inner wall of the seal mounting cavity are/is provided with strip-shaped positioning grooves for radial positioning during assembly, and the length direction of the strip-shaped positioning grooves is parallel to the axis of the shell.

Furthermore, an anti-interference sheath made of a magnetic isolation material is sleeved outside the double-output driving device.

(3) Advantageous effects

The single-drive double-fixed seal support with the anti-magnetic and anti-theft functions adopts double-shaft arrangement, so that the output force and the stability of fixation are improved, and the locking strength and the reliability are improved; the magnetic fluid and the exciting coil are matched for control, and the unlocking can be realized after the current with a specific ratio is output, so that the unlocking caused by the interference of external strong magnetism or a Tesla coil is avoided, the safety coefficient is high, and the anti-theft effect is good; the anti-interference sheath is arranged, so that the interference of an external magnetic field is avoided, and the stability and the reliability of operation are improved; the support parts are arranged on the two sides of the mounting bracket, so that the structural strength is improved, a certain axial force can be borne, the working precision is prevented from being influenced by micro deformation of the mounting bracket, and the overall reliability is improved; the supporting part is detachable, the production cost is low, and the assembly is convenient and quick; the side wall of the shell is provided with the mounting seat, so that the structural compactness is improved, and the mounting of the driving gear is facilitated; the driving gear is connected with the mounting seat through the self-lubricating bearing or the self-lubricating gasket, so that the mounting error is small, the precision is high, the self-lubricating effect is realized, and the friction loss is reduced; the unique locking bolt structural design has simple and compact structure, convenient assembly, high integral structural strength and good linkage effect; the speed is increased by adopting the speed change gear set, so that the axial stroke of the pin shaft is reduced, the occupied space is reduced, meanwhile, the axial stroke of the locking bolt is improved, the connecting thread with the seal body is increased, and the locking strength and reliability are improved; the travel switch is arranged, so that the position state of the locking bolt can be known in real time and used for accurate control; the outer wall of the shell and the inner wall of the seal mounting cavity are provided with positioning grooves, so that quick and accurate positioning and mounting can be realized; the root of the pin shaft is provided with a limiting block, so that the pin shaft is prevented from rotating radially, and the running precision and reliability are improved; the single-drive double-fixed seal support with the anti-magnetic and anti-theft functions has the advantages of compact structure, convenience in assembly, good locking effect and anti-theft and anti-disassembly effects, the double-locking function of the seal support and the seal body is realized through the single drive device, the production cost is reduced, the overall size is reduced, and the production cost is low.

Drawings

FIG. 1 is a front view of a single-drive double-fixed stamp support with anti-magnetic and anti-theft functions according to the present invention;

FIG. 2 is a top view of the single-drive double-fixed stamp support with anti-magnetic and anti-theft functions according to the present invention;

FIG. 3 is a cross-sectional view of the single-drive double-fixed stamp support with anti-magnetic and anti-theft functions of the present invention;

FIG. 4 is a schematic structural diagram of a dual-output driving device of a single-drive dual-fixed stamp support with anti-magnetic and anti-theft functions according to the present invention;

FIG. 5 is a schematic view of a connecting portion between a single-drive double-fixed stamp support and a stamp sliding seat with anti-magnetic and anti-theft functions according to the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 3;

FIG. 7 is an enlarged view of portion B of FIG. 3;

FIG. 8 is an installation diagram of a driving gear of the single-drive double-fixed stamp support with the anti-magnetic and anti-theft function according to the present invention;

FIG. 9 is an enlarged view of portion C of FIG. 8;

FIG. 10 is a schematic structural view of a pin shaft of the single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions according to the present invention;

FIG. 11 is a schematic view of the installation of the dual output driving device of the single-drive dual-fixed stamp support with anti-magnetic and anti-theft functions according to the present invention;

FIG. 12 is a schematic view of the bracket unlocked state of the single-drive double-fixed stamp bracket with the anti-magnetic and anti-theft function according to the present invention;

FIG. 13 is an enlarged view of portion D of FIG. 12;

FIG. 14 is an enlarged view of section E of FIG. 12;

FIG. 15 is a schematic view of the state of the single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions for unlocking the stamp according to the present invention;

FIG. 16 is a schematic diagram showing the dual output driving device of the single-drive dual-fixed stamp support with anti-magnetic and anti-theft functions when the stamp is unlocked according to the present invention;

FIG. 17 is an enlarged view of portion F of FIG. 15;

FIG. 18 is an enlarged view of portion G of FIG. 15;

in the figure, 1-shell, 1 a-positioning groove, 1 b-first strip-shaped groove, 12-mounting seat, 12 a-first annular groove, 101-mounting chamber, 102-stamp mounting cavity, 102 a-second strip-shaped groove, 103-pin hole, 2-double-output driving device, 20 a-left cavity, 20 b-middle cavity, 20 c-right cavity, 21-cylinder body, 21 a-positioning lug, 22-sliding plug, 22 a-through hole, 23-sliding plug rod, 23 a-spiral guide groove, 23 b-limiting block, 23 c-pin shaft, 24-supporting part, 31-first excitation coil, 32-second excitation coil, 33-third excitation coil, 41-driving gear, 41 a-second annular groove, 42-intermediate gear, 43-locking bolt, 43 a-first trigger surface, 43 b-second trigger surface, 43 d-pin, 43 c-thread body, 44-bearing or self-lubricating gasket, 51 a-first driving lever, 51 b-first contact switch, 52 a-second driving lever, 52 b-second contact switch, 6-sliding seat, 61-top pin and 62-elastic component.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 to 18, the present invention provides a single-drive double-fixed stamp support with anti-magnetic and anti-theft functions, which is used for connecting with a sliding seat in a stamp housing, and when being connected with the sliding seat, the support is fixedly connected through a pin shaft in the present invention; meanwhile, the seal body is installed at the lower end of the seal support and is fixed through the locking bolt, when the seal support needs to be replaced, the seal support can be detached from the sliding seat, the seal body is detached from the seal support, driving is achieved through the double-output driving device, the structure is compact, and the safety coefficient is high.

Specifically, the single-drive double-fixed seal support with the anti-magnetic and anti-theft functions comprises a shell 1, a double-output drive device and a seal locking mechanism;

referring to fig. 1-3, a housing 1 is used as an installation carrier and is connected to a sliding seat 6 in an intelligent stamp, in this embodiment, the housing is of a cylindrical structure, the cross section of the housing is a rounded rectangle, four side walls of the housing are respectively provided with a first bar-shaped groove 1b, each side wall is provided with two first bar-shaped grooves 1b, the length direction of each first bar-shaped groove is parallel to the axis of the housing, correspondingly, the sliding seat of the stamp is provided with a first bar-shaped protrusion corresponding to the first bar-shaped groove, the housing can be assembled in a fast sliding manner, the top of the housing is provided with a positioning groove 1a, the positioning groove is not located at the center, the assembly positioning can be realized, and the direction error during the assembly can be avoided; the bottom surface of the shell 1 is inwards concave and forms a seal mounting cavity 102 for mounting a seal body, meanwhile, a groove communicated with the seal mounting cavity is arranged at the bottom of the shell, the depth of the groove is 1-5mm and is used as an axial limiting surface of the seal body, for the purpose of accurate radial positioning of the seal body, a second strip-shaped groove 102a is arranged on the side wall of the seal mounting cavity, the length direction of the second strip-shaped groove is parallel to the axis of the seal mounting cavity, namely the insertion direction of the seal body, one or more second strip-shaped grooves 102a are arranged, and when the number of the second strip-shaped grooves is multiple, the included angle between two adjacent second strip-shaped grooves 102a is different from the included angle between other adjacent second strip-shaped grooves 102a, so that the assembly efficiency and the assembly precision can be improved, and the wrong mounting can be avoided; between the top and the side walls of the housing there are provided bevels forming a bevel guide for smooth mounting of the holder into the slide 6, in which housing a mounting chamber 101 is formed for mounting of other components.

The side wall of the shell is provided with two pin holes 103, the two pin holes 103 are horizontally arranged on two sides of the shell, correspondingly, the slide 6 is provided with a shaft hole corresponding to the pin hole, referring to fig. 5, the shaft hole is provided with a top pin 61 in a sliding manner, an elastic part 62 is arranged in the shaft hole and enables the top pin 61 to be ejected out towards the shell direction, the top pin can be inserted into the pin hole, the shaft hole is internally provided with a pin shaft 23c in a sliding manner, the diameter of the pin shaft 23c is the same as that of the top pin shaft, when the top pin is inserted into the pin hole of the shell, the shell is in a shell locking state, at the moment, the shell (seal support) is connected with the slide, when the contact surface of the top pin and the pin shaft is flush with the side wall of the shell, the shell is in a shell unlocking state, at the moment, the shell (seal support) can be taken out of the slide for replacing the seal body.

Two locking screw holes are arranged on the side wall of the seal mounting cavity 102, in the embodiment, the locking screw holes are stepped holes, the large hole end of each stepped hole faces the center of the seal mounting cavity, inner threads are arranged on the inner walls of the small holes of the stepped holes, the inner threads are the same as the screw holes on the side wall of the seal body, the axis of each locking screw hole is parallel to the axis of the pin hole 103, in order to improve the fixing effect, in the embodiment, the axis of each locking screw hole is vertical to and intersected with the axis of the seal mounting cavity,

the dual-output driving device has two output ends, referring to fig. 3-4, which are horizontally arranged in the installation chamber 101, in detail, the installation support 11 for installing the dual-output driving device is arranged at the center of the installation chamber, the two ends of the installation support are provided with vertically arranged strip-shaped grooves 11a, the two ends of the dual-output driving device are provided with positioning lugs 21a which can be clamped into the strip-shaped grooves 11a to realize circumferential and radial positioning, and meanwhile, a supporting part is arranged between the side wall of the installation support 11 and the inner wall of the casing, in the embodiment, the supporting part is a cylinder, and the side walls of the casing and the supporting frame are provided with supporting parts 24 for supporting the supporting part, and the supporting part can be detached, so that the overall structural strength can be improved, and the micro-deformation of the installation support affects the action precision; the output shafts of the double-output driving device are rigidly connected with the pin shafts 23c which are arranged in the pin holes in a sliding mode and can push the pin shafts to slide axially; in this embodiment, the dual output driving device includes a horizontally disposed cylinder 21, two sliding plugs 22 are slidably disposed in the cylinder, the two sliding plugs separate an inner cavity of the cylinder into a left cavity 20a, a middle cavity 20b and a right cavity 20c, through holes 22a are formed at two ends of the sliding plugs, the through holes can communicate the left cavity with the middle cavity and communicate the middle cavity with the right cavity, a sliding plug rod 23 is fixed on the sliding plugs, the sliding plug rod is disposed outward, the sliding plug rod extends out of the cylinder 21 after passing through the left cavity or the right cavity and is connected with a pin 23c, a spiral guide groove 23a is formed on the pin, the spiral guide groove 23a is spiral, a pitch of the spiral guide groove is 8-20 times a diameter of the pin, a rectangular stopper 23b is disposed at a root of the pin 23c, referring to fig. 10, a stopper hole for accommodating the stopper is disposed at one end of the pin hole and realizing axial sliding fit, the stopper limits a degree of freedom of the pin, so that only axial movement can be realized, but radial rotation cannot be realized. Magnetic fluid is filled in the cylinder body and can pass through the through hole on the sliding plug and enter the other cavity from one cavity;

the magnetic fluid has the following characteristics:

a. under the action of a magnetic field, the carrier suspending capacity is realized;

b. the apparent specific gravity and viscosity of the magnetic fluid can be changed by adjusting the intensity of the magnetic field, so that magnetic solids can be stably suspended in the magnetic fluid;

c. the magnetic fluid can flow to and be fixed in an area with high magnetic field intensity under the action of an external magnetic field;

d. the response speed to the magnetic field is fast, and after the magnetic field is removed, the magnetic particles in the magnetic fluid are rapidly distributed in a random manner.

The first excitation coil 31, the second excitation coil 32 and the third excitation coil 33 are sequentially arranged outside the cylinder body along the axial direction, wherein the second excitation coil 32 is positioned in the center of the cylinder body, the first excitation coil and the third excitation coil are symmetrically arranged on two sides of the second excitation coil, and the sliding plugs in the inner cavity of the cylinder body are positioned at different positions through different currents in the three excitation coils so as to realize actions with different functions. In order to avoid the interference of an external magnetic field on the magnetic fluid in the cylinder body, an anti-interference sheath (not shown in the figure) is further arranged in the installation cavity, the double-output driving device is located in the anti-interference sheath, and the anti-interference sheath is made of a magnetic isolation material, so that the external magnetic field can be prevented from being connected, the stability and the reliability of operation are improved, and the operation precision is improved.

The seal locking mechanism is used for fixing a seal body arranged in the seal mounting cavity and comprises a transmission assembly and a locking bolt 43, wherein the transmission assembly is connected with the pin shaft 23c and can convert the linear motion of the pin shaft into the circular motion, the locking bolt is arranged at the output end of the transmission assembly and is coaxial with the locking screw hole, and the head part of the locking bolt is in threaded connection with the locking hole; specifically, a pin 43d facing the locking screw hole and coaxial with the locking screw hole is fixed in the shell, center holes penetrate through two ends of the locking bolt, the locking bolt is sleeved on the pin and can axially slide and radially rotate, the locking bolt comprises a gear body and a thread body 43c which are coaxially arranged, gear teeth used for being connected with a transmission assembly are arranged on the side wall of the gear body, the axial width of the gear teeth is larger than the stroke of the locking bolt, trigger surfaces used for triggering a limit switch are respectively arranged at two ends of the gear body, and the locking bolt comprises a first trigger surface 43a arranged at the tail of the gear body and a second trigger surface 43b arranged at the head of the gear body; a first contact switch 51b and a first driving lever 51a which correspond to the first trigger surface are arranged at the lower end of the pin, the first driving lever is bent to enable an included angle between two ends to be larger than 140 degrees and smaller than 170 degrees, the first driving lever is rotatably arranged in the shell, and meanwhile, a torsion spring is arranged, the torsion spring enables the head of the first driving lever to be far away from the first contact switch, the tail of the first driving lever faces the first trigger surface 43a and is positioned on the movement stroke of the locking bolt (the first trigger surface 43a), and when the locking bolt moves to an external limit position (a seal unlocking state), the first trigger surface is contacted with the tail of the first driving lever and pushes the first driving lever to rotate so as to trigger the first contact switch; meanwhile, a second contact switch 52b and a second driving lever 52a corresponding to the second trigger surface 43b are arranged at the lower end of the pin, the second driving lever is bent to enable an included angle between the two ends to be larger than 140 degrees and smaller than 170 degrees, the second driving lever is rotatably installed in the shell, a torsion spring is arranged at the same time, the head of the second driving lever is far away from the second contact switch through the torsion spring, the tail of the second driving lever faces the second trigger surface 43b and is positioned on the movement stroke of the locking bolt (second trigger surface), when the locking bolt moves to an inner limit position (seal locking state), the second trigger surface is contacted with the tail of the second driving lever and pushes the second driving lever to rotate so as to trigger the second contact switch, and the first driving lever and the second driving lever in the embodiment are equivalent to a lever; the end part of the screw body is chamfered, and the outer wall of the screw body is provided with an external thread which is matched and connected with the locking screw hole.

The transmission assembly comprises a driving gear 41 and a speed change gear set, the driving gear 41 being mounted coaxially and rotatably with the pin hole 103 in the housing, in particular, the side wall of the mounting chamber is provided with a mounting seat 12, a mounting groove for mounting the driving gear 41 is arranged on the mounting seat, the lower end of the mounting groove is open, bosses are arranged on two sides of the inner wall of the mounting groove, a first annular groove 12a coaxial with the pin hole is arranged on each boss, while second annular grooves 41a coaxial with the first annular grooves are provided on both sides of the driving gear, a bearing or a self-lubricating gasket 44 is arranged between the first annular groove and the second annular groove and used for realizing the free rotation of the driving gear and reducing the friction force, a shaft hole for allowing the pin shaft to pass is arranged at the center of the driving gear, a gap h is arranged between the inner wall of the shaft hole and the outer wall of the pin shaft, and the gap h is 0.1-1 mm. Be equipped with two archs (not shown in the figure) in this shaft hole, two protruding symmetries set up at the shaft hole inner wall, the spiral guide slot 23a of round pin axle lateral wall also is two and the symmetry sets up simultaneously, equilibrium when it can improve, avoid unilateral atress and influence the drive effect, protruding rotation along with spiral guide slot during round pin axle axial displacement, thereby convert the rectilinear motion of round pin axle into drive gear's circular motion, speed gearset sets up in order to be used for the acceleration rate between the teeth of a cogwheel and drive gear 41, in this embodiment, speed gearset includes one or more interconnect's intermediate gear 42, this speed gearset's input and the teeth of a cogwheel meshing of drive gear lateral wall, speed gearset's the output and the teeth of a cogwheel meshing of the gear body lateral wall of locking bolt, thereby realize being connected between the two, in this embodiment, speed gearset's the velocity ratio of increasing is 5: 1-15: 1, it can improve the locking bolt motion and form, reduces the displacement distance of round pin axle simultaneously.

When the speed change gear set drives the locking bolt to rotate, as the thread body at the head of the locking bolt is in threaded connection with the locking screw hole, the locking bolt axially moves along with the thread during rotation, and the output gear of the driving gear set and the gear teeth on the side wall of the gear body of the locking bolt are straight teeth, so that when the locking bolt axially moves, relative axial sliding is also realized between two gear teeth, the meshing between the two gear teeth is not influenced, and the locking bolt is meshed with the speed change gear set in real time.

When the pin shaft 23c moves inward (in the direction close to the housing axis), the lock bolt moves inward (in the direction close to the housing axis); when the pin 23c moves outward (away from the housing axis), the lock bolt moves outward (away from the housing axis), and the pin and the lock bolt move in the same direction when they move.

The single-drive double-fixed seal support with the anti-magnetic and anti-theft functions has the following working states:

referring to fig. 3-7, when the pin 23c moves inward, the locking bolt is driven to rotate and move inward, when the pin 23c moves to the inner limit, the locking bolt is located at the inner limit, and the head of the locking bolt is located in the seal mounting cavity for fixing the seal body, at this time, the top pin shaft on the slide is inserted into the pin hole on the side wall of the seal support, and the seal support is in a locked state; meanwhile, the head of the locking bolt is located in the seal mounting cavity, and is in threaded connection with a seal body (not shown in the figure) mounted in the seal mounting cavity and in a locking state, namely the seal support (shell) and the seal body are both in a locking state under the state, and cannot be detached under the state, and the second contact switch is triggered.

Referring to fig. 12-14, when the pin 23c moves outward, the locking bolt is driven to rotate in the opposite direction and move outward, and when the end of the pin is flush with the side wall of the housing, the housing can be unlocked, and at this time, the head of the locking bolt is still located in the seal installation cavity; in this state, the contact surface of the pin shaft and the ejector pin is flush with the side wall of the shell, so that the seal support can slide downwards and be taken out, and the seal support can be taken out from the sliding seat for the next operation of replacing the seal body; in this state, the head of the locking bolt is still partially located in the seal mounting cavity, and the locking bolt is still partially connected with the seal body, so that the seal body cannot be taken down, and the state is a seal support unlocking state.

Referring to fig. 15-18, after the stamp support is taken out of the slide, the pin 23c continues to move outward, when the pin moves to the outer limit position, the locking bolt is located at the outer limit position and the head of the locking bolt is located outside the stamp mounting cavity, at this time, the stamp body can be unlocked, that is, when the pin moves to the outer limit position, the locking bolt is separated from the stamp body (not shown in the figure), at this time, the stamp body can be taken down and replaced, and this state is the stamp body unlocking state.

In order to avoid unlocking the seal body when the seal support is in the slide, the stroke of the inward movement of the ejector pin in the slide (using the end face parallel and level slide side wall of the ejector pin as the reference) is smaller than the stroke of the outward movement of the pin shaft (using the end face parallel and level of the pin shaft as the reference in the shell side wall), namely, when the seal support is installed in the slide, the pin shaft cannot move to the outer limit position, therefore, the locking bolt cannot move to the outer limit position, namely, the seal body cannot be unlocked.

The action of the pin shaft is controlled by the sliding plug, the position of the sliding plug is controlled by the current magnitude of the exciting coil, and particularly, the magnetic fluid quantity and state in the cavity are controlled by the current magnitude ratios of the three exciting coils, so that the position of the sliding plug is accurately controlled.

The single-drive double-fixed seal support with the anti-magnetic and anti-theft functions adopts double-shaft arrangement, so that the output force and the stability of fixation are improved, and the locking strength and the reliability are improved; the magnetic fluid and the exciting coil are matched for control, and the unlocking can be realized after the current with a specific ratio is output, so that the unlocking caused by the interference of external strong magnetism or a Tesla coil is avoided, the safety coefficient is high, and the anti-theft effect is good; the anti-interference sheath is arranged, so that the interference of an external magnetic field is avoided, and the stability and the reliability of operation are improved; the support parts are arranged on the two sides of the mounting bracket, so that the structural strength is improved, a certain axial force can be borne, the working precision is prevented from being influenced by micro deformation of the mounting bracket, and the overall reliability is improved; the supporting part is detachable, the production cost is low, and the assembly is convenient and quick; the side wall of the shell is provided with the mounting seat, so that the structural compactness is improved, and the mounting of the driving gear is facilitated; the driving gear is connected with the mounting seat through the self-lubricating bearing or the self-lubricating gasket, so that the mounting error is small, the precision is high, the self-lubricating effect is realized, and the friction loss is reduced; the unique locking bolt structural design has simple and compact structure, convenient assembly, high integral structural strength and good linkage effect; the speed is increased by adopting the speed change gear set, so that the axial stroke of the pin shaft is reduced, the occupied space is reduced, meanwhile, the axial stroke of the locking bolt is improved, the connecting thread with the seal body is increased, and the locking strength and reliability are improved; the position state of the locking bolt can be known in real time by arranging the travel switch for accurate control; the outer wall of the shell and the inner wall of the seal mounting cavity are provided with positioning grooves, so that quick and accurate positioning and mounting can be realized; the root of the pin shaft is provided with a limiting block, so that the pin shaft is prevented from rotating radially, and the running precision and reliability are improved; the single-drive double-fixed seal support with the anti-magnetic and anti-theft functions has the advantages of compact structure, convenience in assembly, good locking effect and anti-theft and anti-disassembly effects, the double-locking function of the seal support and the seal body is realized through the single drive device, the production cost is reduced, the overall size is reduced, and the production cost is low.

It should be noted that, in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. Therefore, the appended claims should be construed to cover all such variations and modifications as fall within the true spirit and scope of the invention. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.

Claims

1. The utility model provides a two seal supports of deciding of single-driven with diamagnetic theftproof function which characterized in that includes:

the double-output driving device is horizontally arranged in the installation cavity, and output shafts of the double-output driving device are rigidly connected with the pin shaft which is in sliding fit in the pin hole and can push the pin shaft to axially extend and retract; the double-output driving device comprises a cylinder body, two sliding plugs are arranged in the cylinder body in a sliding mode, the cylinder body is divided into a left cavity, a middle cavity and a right cavity by the two sliding plugs, through holes communicated with the left cavity and the middle cavity or the middle cavity and the right cavity penetrate through two ends of the sliding plugs, a sliding plug rod is fixed on the sliding plugs, the sliding plug rod extends out of the cylinder body after penetrating through the left cavity or the right cavity, and magnetic fluid is filled in the cylinder body; a first exciting coil, a second exciting coil and a third exciting coil are sequentially arranged outside the cylinder body along the axis direction;

the seal locking mechanism comprises a transmission assembly and a locking bolt, wherein the transmission assembly is connected with the pin shaft and can convert the linear motion of the pin shaft into the circular motion, the locking bolt is arranged at the output end of the transmission assembly and is coaxial with the locking screw hole, and the head part of the locking bolt is in threaded connection with the locking screw hole;

when the pin shaft moves to the external limit position, the locking bolt is located at the external limit position, and the head of the locking bolt is located outside the seal mounting cavity, so that the seal body can be unlocked;

and an anti-interference sheath made of a magnetic isolation material is sleeved outside the double-output driving device.

2. The single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions as claimed in claim 1, wherein: the locking bolt is connected with the inner limit switch through a connecting rod, the locking bolt is connected with the outer limit switch through a connecting rod, and the locking bolt is connected with the inner limit switch through a connecting rod.

3. The single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions as claimed in claim 1, wherein: the transmission assembly comprises a driving gear and a speed change gear set, the driving gear and the pin hole are coaxially and rotatably installed in the shell, a shaft hole for allowing the pin shaft to penetrate is formed in the center of the driving gear, a protrusion is arranged in the shaft hole, a spiral guide groove for allowing the protrusion to be sleeved in is formed in the side wall of the pin shaft, the protrusion rotates along with the spiral guide groove when the pin shaft moves axially, so that linear motion is converted into circular motion, gear teeth are arranged at the tail of the locking bolt, and the speed change gear set is arranged between the gear teeth and the driving gear and used for increasing speed.

4. The single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions as claimed in claim 2, wherein: the casing internal fixation has the orientation locking screw and with the coaxial pin of locking screw, the both ends of locking bolt run through have the centre bore and the sliding fit is in on the pin, the locking bolt is including the gear body and the flank of screw of coaxial setting, the lateral wall of gear body is equipped with and is used for being connected with drive assembly, and axial width is greater than the teeth of a cogwheel of locking bolt stroke, the both ends of gear body are equipped with the trigger face that is used for triggering limit switch respectively.

5. The single-drive double-fixed-seal support with the anti-magnetic and anti-theft function according to claim 1, characterized in that: the center of the installation cavity is provided with an installation support used for installing the double-output driving device, two ends of the installation support are provided with vertically arranged strip-shaped grooves, and two ends of the double-output driving device are provided with positioning lugs which can be clamped into the strip-shaped grooves to realize positioning; and a supporting component is arranged between the side wall of the mounting bracket and the inner wall of the shell.

6. The single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions as claimed in claim 3, wherein: the lateral wall of installation cavity is equipped with the mount pad, offer on the mount pad and be used for the installation drive gear and the open mounting groove of lower extreme, the both sides of mounting groove are equipped with the boss, seted up on the boss with the coaxial first ring channel of pinhole, drive gear's both sides be equipped with the coaxial second ring channel of first ring channel, first ring channel with be equipped with bearing or self-lubricating gasket between the second ring channel.

7. The single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions as claimed in claim 1, wherein: the output shaft of the double-output driving device is provided with a limiting block for avoiding the rectangular shape of the output shaft in radial rotation, and one end of the pin hole is provided with a rectangular limiting hole matched with the limiting block.

8. The single-drive double-fixed stamp support with the anti-magnetic and anti-theft functions as claimed in claim 1, wherein: the outer wall of the shell and/or the inner wall of the seal mounting cavity are/is provided with strip-shaped positioning grooves for radial positioning during assembly, and the length direction of the strip-shaped positioning grooves is parallel to the axis of the shell.