CN107695667B - Screw locking device and locking method - Google Patents
Screw locking device and locking method Download PDFInfo
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- CN107695667B CN107695667B CN201711015011.7A CN201711015011A CN107695667B CN 107695667 B CN107695667 B CN 107695667B CN 201711015011 A CN201711015011 A CN 201711015011A CN 107695667 B CN107695667 B CN 107695667B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000009471 action Effects 0.000 claims abstract description 10
- 230000000903 blocking effect Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008602 contraction Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a screw locking device and a locking method, wherein the screw locking device comprises a driving part, a guide rod and an operating rod, wherein the driving part is connected with one end of the guide rod and can drive the guide rod to rotate around the axis of the guide rod; one of the other end of the guide rod and the operating rod is provided with a sliding groove extending along the axial direction, the other one of the guide rod and the operating rod is in sliding fit with the sliding groove, and the guide rod and the operating rod can synchronously rotate; a first elastic piece is further arranged between the guide rod and the operating rod, when the guide rod and the operating rod slide in opposite directions, the first elastic piece is compressed, and one end, far away from the guide rod, of the operating rod is provided with a clamping mechanism for fixing a screw to be installed; the screw to be installed that fixture is fixed is in the butt state with the screw hole that locates to wait to connect the part, and when first elastic component was compressed to specific state, the rotation of action bars can make first elastic component release to order about to wait to install the screw and tighten in the screw hole. The screw locking device and the locking method provided by the invention can automatically tighten screws.
Description
Technical Field
The invention relates to the technical field of automatic locking of screws, in particular to a screw locking device and a locking method.
Background
In the traditional process, the screw is usually manually screwed, so that the threaded connection between two or more parts is realized, the installation efficiency is low, and the method is more and more difficult to adapt to the operation requirement of mass production.
Therefore, how to provide a locking device capable of automatically tightening a screw is still a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a screw locking device and a locking method, which can realize automatic screwing of screws so as to greatly improve the installation efficiency of the screws.
In order to solve the technical problems, the invention provides a screw locking device, which comprises a driving part, a guide rod and an operating rod, wherein the driving part is connected with one end of the guide rod and can drive the guide rod to rotate around the axis of the guide rod; one of the other end of the guide rod and the operating rod is provided with a sliding groove extending along the axial direction, the other one of the guide rod and the operating rod is in sliding fit with the sliding groove, and the guide rod and the operating rod can synchronously rotate; a first elastic piece is further arranged between the guide rod and the operating rod, when the guide rod and the operating rod slide in opposite directions, the first elastic piece is compressed, and a clamping mechanism for fixing a screw to be installed is arranged at one end, far away from the guide rod, of the operating rod; the screw to be installed that fixture is fixed is in the butt state with the screw hole that locates to wait to connect the part, just when first elastic component is compressed to specific state, the rotation of action bars can make first elastic component release, in order to drive wait to install the screw tightening in the screw hole.
When the screw locking device provided by the invention is used, the screw to be installed can be fixed through the clamping mechanism, and the screw locking device is driven to move until the screw to be installed is aligned with the screw hole of the part to be connected; then, a pushing force towards the screw hole is applied to the guide rod, so that the screw to be installed is pushed against the screw hole, and the guide rod and the operation rod slide in opposite directions to compress the first elastic piece until the first elastic piece is compressed to a specific state; at this time, the distance between the screw locking device and the part to be connected is kept, namely, the compressed state of the first elastic piece is kept, the driving guide rod and the operating rod rotate synchronously, and as the first elastic piece has continuous pressure towards the screw hole to the operating rod, the first elastic piece can be released when the operating rod rotates, so that the screw to be installed is driven to be automatically screwed in the screw hole.
Compared with the traditional manual screw screwing process, the screw locking device provided by the invention can greatly improve the screw installation efficiency and save the labor cost.
More importantly, the screw locking device provided by the invention separates the rotating force required by screwing the screw from the pushing force towards the screw hole, so that the pushing force can be applied first, and the first elastic piece is in a compressed state, namely, the first elastic piece can store a certain elastic force in advance; then, a rotational force is applied again, and at this time, the elastic force accumulated in the first elastic member is naturally released, thereby driving the screw to be automatically tightened. That is, the driving component does not need to provide the pushing force and the rotating force at the same time, and the requirement on the driving component is lower, so that the screw locking device provided by the invention has simpler structure and lower cost; even, the driving part can only provide a rotating force, and the pushing force can be provided by external equipment such as a mechanical arm, a numerical control machine tool and the like, so that the structure of the screw locking device can be further simplified, and the cost can be lower.
Optionally, the sliding groove is arranged at one end of the guide rod, which is far away from the driving part, and the operating rod is inserted into the sliding groove; the outer wall of the operating rod is matched with the inner wall of the chute through the shape, so that the guide rod and the operating rod synchronously rotate.
Optionally, the sliding groove is arranged in the middle of one end of the guide rod, which is far away from the driving part, and the operating rod is inserted into the sliding groove; the periphery wall of the chute is provided with a guide hole extending along the axial direction, the periphery wall of the part of the operating rod inserted into the chute is provided with a guide piece protruding outwards along the radial direction, and the guide piece is inserted into the guide hole and can slide in the guide hole.
Optionally, the number of the guide members is plural, and each guide member is disposed at intervals in the axial direction.
Optionally, the clamping mechanism comprises a screwdriver head and a chuck, the screwdriver head is arranged at one end of the operating rod, which is far away from the guide rod, and the head shape of the screwdriver head is matched with the groove shape of the head of the screw to be installed; the chuck can be abutted with the outer wall of the head of the screw to be installed so as to be matched with the screwdriver head to fix the head of the screw to be installed.
Optionally, the clamping mechanism further comprises a first bracket, the first bracket is mounted at the end of the operating rod, which is far away from the guide rod, and the chuck is mounted on the first bracket; the first elastic piece is a spring, the outer sleeve of the first elastic piece is arranged on the operating rod, one end of the first elastic piece abuts against the first bracket, and the other end of the first elastic piece abuts against one end, far away from the driving part, of the guide rod.
Optionally, a blocking piece protruding outwards along the radial direction is arranged at the end part of the operating rod, which is far away from the guide rod, and the first bracket jacket is installed on the operating rod and abuts against the blocking piece.
Optionally, the clamping mechanism further comprises a connecting piece, wherein the tail part of the connecting piece passes through the chuck and is fixedly connected to the first bracket in a plugging manner, and the chuck can slide along the connecting piece; the clamping head is provided with a connecting piece, and the clamping head is provided with a first elastic piece; when the screw to be installed is positioned between the screwdriver head and the chuck, the second elastic piece is in a compressed state, so that the chuck abuts against the head of the screw to be installed.
Optionally, the clamping head is provided with a clamping surface matched with the outer wall of the head of the screw to be installed, and the clamping surface is matched with the screwdriver head and can fix the head of the screw to be installed; the second elastic piece is a spring, and the outer sleeve of the second elastic piece is installed on the connecting piece.
Optionally, a guide surface is provided at an end of the clamping surface remote from the driving member, the guide surface being inclined gradually outwards in a direction remote from the driving member.
Optionally, a positioning mechanism is further included, the positioning mechanism being capable of limiting rotation of the first bracket.
Optionally, the device further comprises a switching platform, one end of the switching platform is fixed on the driving component, and the other end of the switching platform is provided with a mounting position which can be fixedly connected with external equipment.
Optionally, the positioning mechanism comprises a positioning rod and a second bracket, one end of the positioning rod is connected with the switching platform, and the other end of the positioning rod is connected with the second bracket; the second bracket is connected with the first bracket, and the second bracket and the first bracket can slide relatively along the axial direction.
The invention also provides a screw locking method which is suitable for the screw locking device and comprises the following steps: step S1, fixing the screw to be installed through the clamping mechanism, and driving the screw locking device to enable the screw to be installed to be aligned with a screw hole formed in a part to be connected; s2, applying a pushing force to the guide rod so that the screw to be installed is abutted against the screw hole, and the guide rod and the operating rod slide in opposite directions until the first elastic piece is compressed to a specific state; and S3, driving the guide rod and the operating rod to synchronously rotate, and releasing the first elastic piece to drive the screw to be installed to be screwed in the screw hole.
Since the above-mentioned screw locking device has the above-mentioned technical effects, the screw locking method for the screw locking device also has similar technical effects, and thus, the description thereof will not be repeated here.
Optionally, the step S2 specifically includes: an external device applies a pushing force to the screw locking device so that the screw to be installed is abutted against the screw hole, and the guide rod and the operating rod slide in opposite directions until the first elastic piece is compressed to a specific state; the step S3 specifically comprises the following steps: and starting the driving part, wherein the driving part drives the guide rod and the operating rod to synchronously rotate, and the first elastic piece is released to drive the screw to be installed to be screwed in the screw hole.
Optionally, the clamping mechanism includes a screwdriver head, a chuck, a first bracket, a connecting piece and a second elastic piece, wherein the screwdriver head is arranged at one end of the operating rod, which is far away from the guide rod, and the head shape of the screwdriver head is matched with the groove shape of the head of the screw to be installed; the first bracket is arranged at the end part of the operating rod, which is far away from the guide rod, the tail part of the connecting piece passes through the clamping head and is fixedly connected with the first bracket in an inserting way, and the clamping head can slide along the connecting piece; two ends of the second elastic piece are respectively propped against the head part of the connecting piece and the clamping head; in the step S1, the fixing the screw to be mounted by the clamping mechanism specifically includes: step S11, driving the clamping mechanism to move towards the screw to be mounted until one end of the chuck away from the driving part abuts against the head of the screw to be mounted; step S12, pushing force is applied to the clamping mechanism, so that the head of the screw to be installed can push the chuck to slide along the radial direction, and the second elastic piece is compressed; and S13, the head of the screw to be mounted is inserted into the screwdriver head, and the clamping head abuts against the outer wall of the head of the screw to be mounted under the action of the second elastic piece.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of a screw locking device according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 at another view angle;
FIG. 4 is an exploded view of FIG. 3;
fig. 5 is a schematic diagram of a connection structure between the positioning mechanism and the operation lever, and between the positioning mechanism and the first elastic member in fig. 1.
The reference numerals in fig. 1-5 are illustrated as follows:
1a driving part;
2 guide rods and 21 guide holes;
3, an operation rod, a 31 guide piece and a 32 blocking piece;
4 a first elastic member;
the clamping mechanism 5, the batch head 51, the clamping head 52, the clamping surface 521, the guide surface 521a, the first bracket 53, the connecting piece 54 and the second elastic piece 55;
6 positioning mechanism, 61 positioning rod, 62 second support;
7 transfer platform, 71 platform body, 711 mount location, 72 mounting plate.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The term "plurality" as used herein refers to a plurality, typically two or more, of indefinite numbers.
The terms "first," "second," and the like herein are merely used for convenience in describing two or more components having the same or similar structure, and do not denote any particular limitation of the order.
Referring to fig. 1-5, fig. 1 is a schematic perspective view of an embodiment of a screw locking device according to the present invention, fig. 2 is a front view of fig. 1, fig. 3 is a schematic view of fig. 1 from another perspective, fig. 4 is an exploded view of fig. 3, and fig. 5 is a schematic view of a connection structure between a positioning mechanism and an operation rod, and a first elastic member in fig. 1.
As shown in fig. 1-3, the invention provides a screw locking device, which comprises a driving part 1, a guide rod 2 and an operating rod 3, wherein one end of the guide rod 2 is fixedly connected with the driving part 1, and the guide rod 2 can rotate around the axis of the guide rod 2 under the driving of the driving part 1. Alternatively, the guide rod 2 may be integrally provided with the output shaft of the driving member 1, so that the guide rod 2 naturally rotates synchronously with the output shaft of the driving member 1.
One of the other end of the guide rod 2 and the operating rod 3 is provided with a sliding groove (not shown) extending along the axial direction, the other one is in sliding fit with the sliding groove, that is, the other one can slide in and out along the axial direction relative to the former one in the sliding groove, and the guide rod 2 and the operating rod 3 can synchronously rotate. A first elastic piece 4 is further arranged between the guide rod 2 and the operating rod 3, and the guide rod 2 and the operating rod 3 slide in opposite directions, namely, when the operating rod 3 slides into the guide rod 2 relatively, the first elastic piece 4 is compressed.
The one end that guide bar 2 was kept away from to action bars 3 is equipped with the fixture 5 that is used for fixed screw that waits to install, and when the screw that waits to install that fixture 5 is fixed was in the butt state with the screw hole that locates the part that waits to connect, and when first elastic component 4 was compressed to specific state, the rotation of action bars 3 can make first elastic component 4 release to order about to wait to install the screw and screw up in the screw hole.
The above-described "specific state" of the first elastic member 4 refers to a compressed state in which the elastic force accumulated by the first elastic member 4 is sufficient to tighten the screw to be mounted, and in this state, the compression amount of the first elastic member 4 should be greater than or equal to the length of the screw.
When the screw locking device provided by the invention is used, the screw to be installed can be fixed through the clamping mechanism 5, and the screw locking device is driven to move until the screw to be installed is aligned with the screw hole of the part to be connected; then, a pushing force towards the screw hole is applied to the guide rod 2, so that the screw to be installed is abutted against the screw hole, namely, the screw hole and the screw hole are in an abutting state, and when the pushing force is further applied, the guide rod 2 and the operating rod 3 can slide oppositely to compress the first elastic piece 4 until the first elastic piece 4 is compressed to a specific state; at this time, the distance between the screw locking device and the component to be connected is maintained, that is, the compressed state of the first elastic member 4 is maintained, the driving guide rod 2 and the operating rod 3 rotate synchronously, and the compressed first elastic member 4 continuously presses the operating rod 3 towards the screw hole, so that the first elastic member 4 can be released when the operating rod 3 rotates, and the screw to be installed is driven to be automatically screwed.
Compared with the traditional manual screw screwing process, the screw locking device provided by the invention can greatly improve the screw installation efficiency and save the labor cost.
More importantly, the screw locking device provided by the invention separates the rotation force required by screwing the screw from the pushing force towards the screw hole, so that the pushing force can be applied first, and the first elastic piece 4 is in a compressed state, namely, the first elastic piece 4 can store a certain elastic force in advance; then, the rotational force is applied again, and at this time, the elastic force accumulated in the first elastic member 4 is naturally released, thereby driving the screw to be automatically tightened. That is, the driving component 1 does not need to provide the pushing force and the rotating force at the same time, so that the requirement on the driving component 1 is low, and the structure of the screw locking device provided by the invention can be simplified, and the cost is reduced; even, the driving part 1 can only provide a rotating force, and the pushing force can be provided by external equipment such as a mechanical arm, a numerical control machine tool and the like, at the moment, the driving part 1 can meet the use requirement by adopting a common motor, thereby being beneficial to further simplifying the structure of the screw locking device and reducing the cost.
If the driving part 1 only provides a rotation force, the pushing force can be directly applied to the screw locking device during specific operation, so that the screw to be installed is pushed against the screw hole, the first elastic piece 4 is compressed to a specific state, and then the driving part 1 is started again, so that the guide rod 2 and the operation rod 3 are driven to synchronously rotate, and the screw is screwed.
In other words, the driving part 1 does not need to be in the starting state all the time, which is advantageous in terms of energy saving and can reduce vibrations generated by the operation of the driving part 1.
In the embodiment of the present invention, the structure of the screw locking device provided by the present invention is mainly described by taking the case that the chute is provided on the guide rod 2 as an example, and similarly, the chute is provided on the operation rod 3, and details are not repeated here.
The sliding groove can be arranged in the middle of the guide rod 2, namely, the end part of the guide rod 2 far away from the driving part 1 can be of a hollow tubular structure, and an inner hole of the hollow tubular structure is the sliding groove; alternatively, the slide groove may be provided on the peripheral wall of the guide bar 2. No matter what kind of arrangement is adopted, the guide rod 2 and the operating rod 3 which are connected through the chute can synchronously rotate.
The cross sections of the operating rod 3 and the sliding groove can be triangle, polygon, ellipse or other non-circular figures which are matched, so that the outer wall of the operating rod 3 and the inner wall of the sliding groove can be matched through the shape, and the synchronous rotation of the guide rod 2 and the operating rod 3 can be realized.
By the arrangement, the guide rod 2 and the operating rod 3 can synchronously rotate without other auxiliary limiting parts, and the structure of the screw locking device provided by the invention is more beneficial to simplification.
Alternatively, a guide hole 21 extending in the axial direction may be provided in the peripheral wall of the chute, the operation lever 3 may be inserted into a portion of the chute, the outer wall of the operation lever may be provided with a guide member 31 protruding radially outward, and the guide member 31 may be inserted into the guide hole 21 and may slide in the guide hole 21. As shown in fig. 4, the guide member 31 is engaged with the guide hole 21, so that the guide lever 2 and the operation lever 3 can be rotated synchronously.
The arrangement has no excessive requirements on the shapes of the sliding groove and the operating rod 3, and the cross sections of the sliding groove and the operating rod can be round so as to be convenient for processing; the guiding hole 21 can also limit the guiding element 31, on one hand, the operating rod 3 can be limited in the chute to avoid the operating rod 3 sliding out of the guiding rod 2, and the sliding connection relationship between the guiding rod 2 and the operating rod 3 can be ensured, on the other hand, the guiding hole 21 can also limit the sliding stroke of the operating rod 3 to avoid the damage caused by overlarge sliding stroke and overlarge compression amount of the first elastic element 4, and can protect the first elastic element 4.
It should be noted that the length of the guiding hole 21 should not be too large to avoid excessive compression of the first elastic member 4, and the length of the guiding hole 21 should not be too small to ensure that the first elastic member 4 can be compressed to the specific state described above, so as to achieve automatic tightening of the screw.
The number of the guide members 31 may be plural, and each guide member 31 may be disposed at intervals along the axial direction, so that the radial shake of the operation rod 3 in the sliding process can be avoided to a greater extent by matching the plural guide members 31 with the guide holes 21, which is beneficial to ensuring the stability of the operation rod 3 in the sliding process.
Further, among the plurality of guide members 31, a plurality of guide members 31 may be arranged at intervals in the axial direction to form a row, and each row of guide members 31 may be distributed at intervals in the circumferential direction, and correspondingly, a plurality of guide holes 21 may be arranged at intervals in the circumferential direction of the chute to match each row of guide members 31. Through the cooperation of the plurality of rows of guide members 31 and the plurality of guide holes 21, a plurality of directions in the circumferential direction of the operation rod 3 can be positioned, so that shaking in the sliding process of the operation rod 3 is avoided to a greater extent, and the sliding process of the operation rod 3 is more stable.
Specifically, the guide 31 may be in a block shape, may be in a rod shape, may be fixed to the outer wall of the operation lever 3 by welding, bonding, or the like, or may be fixed to the operation lever 3 by insertion. As shown in fig. 4, when the insertion fixation is adopted, the operation lever 3 may be provided with a mounting hole in the radial direction, and the guide 31 may be inserted into the mounting hole; when the mounting hole is a through hole, both ends of the guide member 31 can extend out of the mounting hole and respectively cooperate with two opposite guide holes 21 provided in the peripheral wall of the chute to ensure stable sliding of the operation lever 3.
The first elastic member 4 may be a spring, and is mounted on the operating rod 3 in a sleeved manner, and two ends of the first elastic member may respectively abut against one end of the guiding rod 2 away from the driving member 1 and one end of the operating rod 3 away from the guiding rod 2. At this time, the operating rod 3 corresponds to a spring column, and can guide and position the first elastic member 4, so as to avoid radial shake in the expansion and contraction process of the first elastic member 4.
The specific configuration of the clamping mechanism 5 of the screw locking device according to the above embodiments will be described in detail in the following examples of the present invention.
As shown in fig. 4, and in combination with fig. 5, the clamping mechanism 5 may include a screwdriver head 51 and a chuck 52, where the screwdriver head 51 may be disposed at an end of the operating rod 3 away from the guide rod 2, i.e., a lower end of the operating rod 3, and a head shape of the screwdriver head 51 may be matched with a groove shape of a head of a screw to be mounted, so that the screwdriver head 51 may be inserted into the head of the screw to be mounted so as to operate the screw to be mounted, and an upper end of the head of the screw to be mounted is positioned.
In detail, the groove shape of the screw head to be mounted may be a straight shape, a cross shape, a plum blossom shape, a hexagon socket, etc., and the screwdriver head 51 may be a matched straight shape screwdriver head, a cross screwdriver head, a plum blossom screwdriver head, a hexagon socket, etc., and the hexagon socket is shown in the embodiment of fig. 5.
The chuck 52 can be abutted against the outer wall of the head of the screw to be mounted, the chuck 52 can generate radially inward propping force on the head of the screw to be mounted in cooperation with the screwdriver head 51, the screwdriver head 51 can generate radially outward propping force on the head of the screw to be mounted, and the head of the screw to be mounted can be fixed through the mutual cooperation of the two propping forces, so that the stability of the screw to be mounted in the clamping, transporting and operating processes is ensured.
With continued reference to fig. 4, the clamping mechanism 5 may further include a first bracket 53, the first bracket 53 may be mounted at an end of the operating rod 3 away from the guide rod 2, that is, a lower end of the operating rod 3, the chuck 52 may be mounted on the first bracket 53, and the first elastic member 4 may abut against the first bracket 53.
The end of the operating rod 3 far away from the guide rod 2, i.e. the lower end of the operating rod 3, may be provided with a blocking member 32 protruding radially outwards, and when the first bracket 53 is sleeved on the operating rod 3, the blocking member 32 can abut against the first bracket 53 to avoid the first bracket 53 from being separated from the operating rod 3. Specifically, the blocking member 32 may be a flange protruding radially outward from the outer wall of the operation lever 3, which may be integrally formed with the operation lever 3; alternatively, the blocking member 32 may be a stopper welded to the outer wall of the lever 3; alternatively, the stopper 32 may be a stopper nut screwed to the lower end portion of the lever 3; in any form, the stopper 32 may be fixedly attached to the lower end portion of the operation lever 3 and may be stopped by the first bracket 53.
Further, the clamping mechanism 5 may further include a connecting piece 54, where the connecting piece 54 may be a screw or a pin, and the tail of the connecting piece may pass through the chuck 52 and be inserted and fixed to the first bracket 53, and the chuck 52 may slide along the connecting piece 54 so as to adjust a gap between the chuck 52 and the batch head 51; a second elastic member 55 may be further included, and two ends of the second elastic member 55 may respectively abut against the head of the connecting member 54 and the collet 52.
By the action of the second elastic member 55, the chuck 52 can be formed as an elastic chuck, and at this time, in order to ensure the clamping effect of the screw to be mounted, the initial gap between the chuck 52 and the screwdriver head 51 can be small.
With the elastic chuck, when the screw to be mounted is clamped and fixed, the head of the screw to be mounted can push and pull the chuck 52 radially outwards at first, so that the gap between the chuck 52 and the screwdriver head 51 is enlarged, and the second elastic member 55 is in a compressed state. Thus, when the screw to be mounted is inserted into the screwdriver bit 51, the chuck 52 can clamp the screw to be mounted under the action of the second elastic member 55.
In addition, the arrangement of the elastic chuck can also enable the screw locking device provided by the invention to be suitable for operating screws with different sizes.
The second elastic member 55 may be a spring, and is sleeved on the connecting member 54, where the connecting member 54 corresponds to a spring column, and can position and guide the second elastic member 55, so as to avoid radial shake of the second elastic member 55 during the expansion and contraction process to a greater extent.
With reference to fig. 5, the chuck 52 may be provided with a clamping surface 521 matching with an outer wall of the head of the screw to be mounted, and the clamping surface 521 is substantially arc-shaped.
The end of the clamping surface 521 away from the driving member 1 may have a guiding surface 521a, and the guiding surface 521a may be gradually inclined outwards in a direction away from the driving member 1, which is reflected in the drawing, i.e., the guiding surface 521a is an inclined surface gradually inclined outwards from top to bottom, and the "outwards" refers to a direction away from the central axis of the operation lever 3. When the screw to be mounted is clamped, the head of the screw to be mounted is firstly contacted with the lower end of the guide surface 521a, and the head of the screw to be mounted naturally outwards expands the chuck 52 due to the guide surface 521a and is contacted with the clamping surface 521 in the downward movement process of the chuck 52, so that the clamping operation of the screw to be mounted is easier.
The first bracket 53 may or may not rotate synchronously with the operation rod 3, and in order to avoid interference between the clamping mechanism 5 and other components in the installation space during the screw installation process, in the embodiment of the present invention, the first bracket 53 preferably does not rotate synchronously with the operation rod 3.
Specifically, the first bracket 53 may be L-shaped, the L-shaped cross plate may be provided with a socket hole, the first bracket 53 is sleeved on the operating rod 3 through the socket hole, and the first bracket and the operating rod may rotate relatively; a positioning mechanism 6 may also be provided, which positioning mechanism 6 can be connected to the L-shaped riser to limit the rotation of the first bracket 53 (i.e. the clamping mechanism 5).
The positioning mechanism 6 may include a positioning rod 61 and a second bracket 62, wherein one end of the positioning rod 61 is connected to the fixing member, for example, may be connected to the housing of the driving member 1, and the other end is connected to the second bracket 62; the vertical plate of the first bracket 53 is provided with a guide groove extending along the axial direction, and the second bracket 62 is inserted into the guide groove and can slide in the guide groove. Thus, when the operation lever 3 is pressed and slid toward the guide lever 2, the positioning mechanism 6 can slide in the guide groove of the first bracket 53.
Further, the screw locking device can further comprise a switching platform 7 connected with the external device, so that the external device can operate the screw locking device.
The adapting platform 7 may comprise a platform body 71 and a mounting plate 72, wherein one end of the platform body 71 may be fixed to the driving member 1 through the mounting plate 72, and the other end of the platform body 71 may be provided with a mounting position 711 capable of being fixedly connected with an external device. The mounting location 711 may be a circular, square or other shape of mounting location 711, and no matter what form of mounting location 711 is used, only the mounting location 711 can be accurately docked with an external device.
Based on the screw locking device according to the above embodiments, the present invention further provides a screw locking method, which specifically includes the following steps: step S1, fixing a screw to be installed through a clamping mechanism 5, and driving a screw locking device to enable the screw to be installed to be aligned with a screw hole formed in a part to be connected; step S2, pushing force is applied to the guide rod 2 so that the screw to be installed is abutted against the screw hole, and the guide rod 2 and the operating rod 3 slide in opposite directions until the first elastic piece 4 is compressed to a specific state; and S3, driving the guide rod 2 and the operating rod 3 to synchronously rotate, and releasing the first elastic piece 4 to drive the screw to be installed to be screwed in the screw hole.
Since the above-mentioned screw locking device has the above-mentioned technical effects, the screw locking method with the screw locking device also has similar technical effects, and thus, the description thereof will not be repeated here.
In the above screw locking method, if the driving part 1 can provide both pushing force and rotating force, the driving part 1 can provide pushing force to the guide rod 2 first and then provide rotating force; whereas if the driving part 1 only provides a rotational force, the above step S2 may specifically be: the external equipment applies pushing force to the screw locking device so that the screw to be installed is abutted with the screw hole, and the guide rod 2 and the operating rod 3 slide in opposite directions until the first elastic piece 4 is compressed to a specific state.
After the step S2 is completed, in step S3, the driving component 1 is restarted, and the driving component 1 drives the guide rod 2 and the operating rod 3 to synchronously rotate, so that the first elastic element 4 is released to drive the screw to be installed to be screwed in the screw hole. That is, the driving part 1 does not need to be in the start-up state all the time, which is also advantageous in terms of energy saving and reduction of vibration generated by the operation of the driving part 1.
In the above step S1, the process of fixing the screw to be mounted by the clamping mechanism 5 may be divided into the following steps: step S11, driving the clamping mechanism 5 to move towards the screw to be mounted until one end of the chuck 52 away from the driving part 1 is abutted with the head of the screw to be mounted; step S12, applying a pushing force to the clamping mechanism 5, so that the head of the screw to be mounted can push the chuck to slide radially outwards, and compress the second elastic member 55; in step S13, the head of the screw to be mounted is inserted into the screwdriver head 51, and the chuck 52 abuts against the outer wall of the head of the screw to be mounted under the action of the second elastic member 55.
That is, the chuck 52 used in the screw locking device of the present invention is an elastic chuck, and when in use, the chuck 52 can be pushed radially outwards by the reaction force of the screw to be mounted, so as to adjust the gap between the chuck 52 and the screwdriver bit 51. In this way, on the one hand, the chuck 52 is suitable for fixing screws to be mounted in different sizes, and on the other hand, the reliability of fixing the screws to be mounted is better ensured under the action of the second elastic member 55.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (12)
1. The screw locking device is characterized by comprising a driving component (1), a guide rod (2) and an operating rod (3), wherein the driving component (1) is connected with one end of the guide rod (2) and can drive the guide rod (2) to rotate around the axis of the guide rod;
one of the other end of the guide rod (2) and the operating rod (3) is provided with a sliding groove extending along the axial direction, the other one is in sliding fit with the sliding groove, and the guide rod (2) and the operating rod (3) can synchronously rotate; a first elastic piece (4) is further arranged between the guide rod (2) and the operating rod (3), when the guide rod (2) and the operating rod (3) slide in opposite directions, the first elastic piece (4) is compressed, and one end, far away from the guide rod (2), of the operating rod (3) is provided with a clamping mechanism (5) for fixing a screw to be installed;
the screw to be mounted, which is fixed by the clamping mechanism (5), is in an abutting state with a screw hole formed in the part to be connected, and when the first elastic piece (4) is compressed to a specific state, the rotation of the operating rod (3) can enable the first elastic piece (4) to be released so as to drive the screw to be mounted to be screwed in the screw hole;
the clamping mechanism (5) comprises a screwdriver head (51) and a chuck (52), the screwdriver head (51) is arranged at one end of the operating rod (3) far away from the guide rod (2), and the head shape of the screwdriver head (51) is matched with the groove shape of the head of the screw to be installed; the clamping head (52) can be abutted against the outer wall of the head of the screw to be mounted so as to be matched with the screwdriver head (51) to fix the head of the screw to be mounted;
the clamping mechanism (5) further comprises a first bracket (53), the first bracket (53) is arranged at the end part of the operating rod (3) far away from the guide rod (2), and the clamping head (52) is arranged on the first bracket (53);
the clamping mechanism (5) further comprises a connecting piece (54), the tail part of the connecting piece (54) penetrates through the chuck (52) and is fixedly connected to the first bracket (53) in a plugging mode, and the chuck (52) can slide along the connecting piece (54); the clamping head also comprises a second elastic piece (55), wherein two ends of the second elastic piece (55) are respectively abutted against the head part of the connecting piece (54) and the clamping head (52); when the screw to be mounted is positioned between the screwdriver head (51) and the chuck (52), the second elastic piece (55) is in a compressed state, so that the chuck (52) abuts against the head of the screw to be mounted;
the specific state refers to a compression state when the elastic force accumulated by the first elastic member (4) is enough to tighten the screw to be mounted, and under the specific state, the compression amount of the first elastic member (4) is larger than or equal to the length of the screw to be mounted;
the end part of the operating rod (3) far away from the guide rod (2) is provided with a blocking piece (32) protruding outwards in the radial direction, and the first bracket (53) is sleeved on the operating rod (3) and abuts against the blocking piece (32).
2. The screw locking device according to claim 1, wherein the chute is arranged at one end of the guide rod (2) far away from the driving component (1), and the operating rod (3) is inserted into the chute;
the outer wall of the operating rod (3) is matched with the inner wall of the chute through the shape, so that the guide rod (2) and the operating rod (3) synchronously rotate.
3. The screw locking device according to claim 1, wherein the sliding groove is arranged in the middle of one end of the guide rod (2) far away from the driving component (1), and the operating rod (3) is inserted into the sliding groove;
the periphery wall of the chute is provided with a guide hole (21) extending along the axial direction, the periphery wall of the part of the operation rod (3) inserted into the chute is provided with a guide piece (31) protruding outwards along the radial direction, and the guide piece (31) is inserted into the guide hole (21) and can slide in the guide hole (21).
4. A screw lock according to claim 3, wherein the number of said guides (31) is plural, and each of said guides (31) is arranged at an axial interval.
5. Screw lock according to any one of claims 1-4, characterized in that the first elastic member (4) is a spring, the outer sleeve of which is mounted to the operating rod (3), and that one end of the first elastic member (4) abuts against the first bracket (53) and the other end abuts against the end of the guiding rod (2) remote from the driving part (1).
6. Screw lock according to claim 5, characterized in that the clamping head (52) is provided with a clamping surface (521) matching the outer wall of the head of the screw to be mounted, the clamping surface (521) being able to fix the head of the screw to be mounted in cooperation with the head (51);
the second elastic piece (55) is a spring, and the outer sleeve of the second elastic piece is mounted on the connecting piece (54).
7. Screw lock according to claim 6, characterized in that the end of the clamping surface (521) remote from the driving part (1) is provided with a guiding surface (521 a), which guiding surface (521 a) is inclined gradually outwards in a direction remote from the driving part (1).
8. The screw lock device according to claim 5, further comprising a positioning mechanism (6), said positioning mechanism (6) being capable of limiting the rotation of said first bracket (53).
9. The screw locking device according to claim 8, further comprising a switching platform (7), wherein one end of the switching platform (7) is fixed to the driving component (1), and the other end is provided with a mounting position (711) capable of being fixedly connected with an external device.
10. The screw locking device according to claim 9, characterized in that the positioning mechanism (6) comprises a positioning rod (61) and a second bracket (62), wherein one end of the positioning rod (61) is connected with the switching platform (7), and the other end is connected with the second bracket (62);
the second bracket (62) is connected with the first bracket (53) and can slide relatively along the axial direction.
11. A method of locking screws, adapted for use in a screw locking device according to any one of claims 1 to 10, comprising the steps of:
step S1, fixing the screw to be installed through the clamping mechanism (5) and driving the screw locking device to enable the screw to be installed to be aligned with a screw hole formed in a part to be connected;
s2, applying a pushing force to the guide rod (2) so as to enable the screw to be mounted to be abutted with the screw hole, and enabling the guide rod (2) and the operating rod (3) to slide oppositely until the first elastic piece (4) is compressed to a specific state;
step S3, driving the guide rod (2) and the operation rod (3) to synchronously rotate, and releasing the first elastic piece (4) to drive the screw to be installed to be screwed in the screw hole;
in the step S1, the fixing of the screw to be mounted by the clamping mechanism (5) specifically includes:
step S11, driving the clamping mechanism (5) to move towards the screw to be mounted until one end of the chuck (52) away from the driving part (1) is abutted with the head of the screw to be mounted;
step S12, applying a pushing force to the clamping mechanism (5) so that the head of the screw to be mounted can push the chuck to slide along the radial direction outwards and compress the second elastic piece (55);
step S13, the head of the screw to be mounted is inserted into the screwdriver head (51), and the clamping head (52) abuts against the outer wall of the head of the screw to be mounted under the action of the second elastic piece (55);
the specific state refers to a compression state when the elastic force accumulated by the first elastic member (4) is enough to tighten the screw to be mounted, and under the specific state, the compression amount of the first elastic member (4) is larger than or equal to the length of the screw to be mounted.
12. The method of screwing in claim 11, wherein the step S2 is specifically: an external device applies a pushing force to the screw locking device so that the screw to be installed is abutted against the screw hole, and the guide rod (2) and the operating rod (3) slide in opposite directions until the first elastic piece (4) is compressed to a specific state;
the step S3 specifically comprises the following steps: the driving component (1) is started, the driving component (1) drives the guide rod (2) and the operating rod (3) to synchronously rotate, and the first elastic piece (4) is released to drive the screw to be installed to be screwed in the screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711015011.7A CN107695667B (en) | 2017-10-26 | 2017-10-26 | Screw locking device and locking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711015011.7A CN107695667B (en) | 2017-10-26 | 2017-10-26 | Screw locking device and locking method |
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| Publication Number | Publication Date |
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| CN107695667A CN107695667A (en) | 2018-02-16 |
| CN107695667B true CN107695667B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711015011.7A Active CN107695667B (en) | 2017-10-26 | 2017-10-26 | Screw locking device and locking method |
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| CN (1) | CN107695667B (en) |
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| CN205414880U (en) * | 2016-03-08 | 2016-08-03 | 深圳市领略数控设备有限公司 | Elasticity lock screw structure |
| CN106425964A (en) * | 2016-09-30 | 2017-02-22 | 国网山东省电力公司商河县供电公司 | Screwdriver with nail storage box and suitable for screws of all materials |
| CN207656230U (en) * | 2017-10-26 | 2018-07-27 | 遨博（北京）智能科技有限公司 | A kind of the screwed lock device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD205105A1 (en) * | 1979-08-16 | 1983-12-21 | Harald Schneider | DEVICE FOR LOOSENING SCREW CONNECTIONS ON TRUCK SPRING BRIDGES |
| CN202240417U (en) * | 2011-09-06 | 2012-05-30 | 珠海格力电器股份有限公司 | Plastic nut pre-tightening head and automatic plastic nut tightening machine |
| CN202517418U (en) * | 2011-12-09 | 2012-11-07 | 苏州华日金菱机械有限公司 | Self-locking screw chuck |
| CN203171227U (en) * | 2013-01-14 | 2013-09-04 | 深圳富欣达自动化有限公司 | Adaptive screw locking mechanism of full-automatic screw locking / unlocking machine |
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| CN107695667A (en) | 2018-02-16 |
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