Screw locking device
By designing the positioning rod, clamping claw and locking bit structure of the screw locking device, the problem of inaccurate locking of soft terminal blocks in a suspended state is solved, and the efficiency and accuracy of automated locking are achieved.
Patent Information
- Application Number
- CN202422686998.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-04
AI Technical Summary
Existing automatic locking devices cannot effectively achieve automatic locking of flexible terminal blocks in a suspended state, resulting in inaccurate locking positions and low efficiency.
A screw locking device is designed, which includes a positioning rod, a clamping jaw and a locking bit. The through hole, the curved inclined surface and the vertical surface structure of the clamping jaw are combined with the clamping jaw cylinder, the limit device and the floating mechanism to achieve precise positioning and automatic locking of the screw.
The automatic locking of the flexible terminal blocks is realized, which improves the locking accuracy and assembly efficiency, ensures that the screws do not deflect during the locking process, and ensures that the terminals are in the correct position.
Smart Images
Figure CN223301604U_ABST
Abstract
Description
Technical Field
[0001] This case relates to the field of automated production technology, and in particular to a screw locking device. Background Art
[0002] During the current assembly of electronic devices, it is necessary to use screws to lock the terminal blocks to the corresponding screw holes. There are mainly two types of locking situations. The first is that the terminal blocks are already fixed to the screw holes to be locked. The common automatic locking methods currently available on the market can meet the locking requirements. The second is that the terminal blocks are not fixed to the screw holes to be locked, but are warped and floating. Because the wiring is flexible, different terminal blocks will be in different positions and postures. All the automatic locking methods currently available on the market cannot achieve automatic locking of the floating terminal heads. Utility Model Content
[0003] The purpose of this application is to provide a screw locking device that can solve one or more defects of the prior art.
[0004] In order to achieve the above-mentioned purpose, the present case provides a screw locking device, comprising: a positioning rod, arranged in a vertical direction and comprising a through hole; a clamping claw, used to clamp and fix the screw; and a locking bit, movably arranged in the through hole.
[0005] According to one embodiment of the present case, the through hole includes: a first through hole having a first diameter; and a second through hole connected to the first through hole and having a second diameter, the first diameter being smaller than the second diameter; wherein the positioning rod forms a screw positioning surface along the horizontal direction at the connection point between the first through hole and the second through hole.
[0006] According to one embodiment of the present invention, the locking bit is movably disposed in the first through hole.
[0007] According to an embodiment of the present invention, at least one groove is formed on the inner wall of the first through hole.
[0008] According to one embodiment of the present invention, an inner wall end surface of the second through hole is chamfered.
[0009] According to one embodiment of the present invention, when the screw abuts against the screw positioning surface, the clamping jaws clamp the screw.
[0010] According to one embodiment of the present case, the clamp includes: a first clamp, including a first main body and a first clamp; and a second clamp, including a second main body and a second clamp, wherein the first clamp and the second clamp respectively have an arcuate inclined surface and an arcuate vertical surface, and the arcuate inclined surface is used to fit and fix the nail cap of the screw.
[0011] According to one embodiment of the present case, a first notch and a second notch are provided around the second through hole of the positioning rod, and the first clamping jaw and the second clamping jaw clamp the screw through the first notch and the second notch respectively.
[0012] According to an embodiment of the present invention, the screw locking device further includes a clamping claw cylinder, and the clamping claw is disposed on the clamping claw cylinder.
[0013] According to one embodiment of the present case, the screw locking device further includes a limiting device, which is arranged on the clamping cylinder and includes a first limiting portion and a second limiting portion that are opposite to and spaced apart in the horizontal direction. The first limiting portion and the second limiting portion are respectively used to limit the horizontal movement distance of the first clamping jaw and the second clamping jaw.
[0014] According to one embodiment of the present case, the screw locking device further includes a fixed plate and a floating mechanism. The positioning rod is fixedly connected to the floating mechanism. The floating mechanism is movably connected to the fixed plate through a spring. The floating mechanism can move in the vertical direction. The spring is used to provide a tightening force when the screw is tightened against the screw hole.
[0015] According to an embodiment of the present invention, the screw locking device further includes a camera, and the camera is used to obtain the position coordinates of the connection terminal and the position coordinates of the screw hole.
[0016] The screw locking device provided in this case can realize automatic locking of terminals, effectively improving the degree of automation and assembly efficiency of terminal locking. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solution implemented in this case, the following is a brief introduction to the drawings required for use in the embodiments.
[0018] Figure 1 This is a schematic diagram of the overall structure of the screw locking device in this case;
[0019] Figure 2 This is a schematic diagram of the structure of the positioning rod in this case;
[0020] Figure 3 This is a schematic diagram of the structure of the clamping jaws in this case;
[0021] Figure 4 This is a schematic diagram of the clamping jaws gripping a screw in this case;
[0022] Figure 5 This is a partial structural diagram of the screw locking device in this case. DETAILED DESCRIPTION
[0023] Example embodiments will now be described more fully with reference to the accompanying drawings, however, example embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this case will be thorough and complete and will fully and completely convey the concept of the example embodiments to those skilled in the art.
[0024] When introducing the elements / components / etc. described and / or illustrated herein, the terms "a", "an", "the", "" and "at least one" are used to indicate the presence of one or more elements / components / etc. The terms "comprising", "including" and "having" are used to indicate open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc. In addition, the terms "first", "second", etc. in the claims are used only as labels and are not numerical limitations on their objects. The same numbers in the drawings represent the same or similar components. On the other hand, well-known components and steps are not described in the embodiments to avoid unnecessary limitations on the present disclosure. In addition, to simplify the drawings, some known and commonly used structures and elements will be depicted in a simple schematic manner in the drawings.
[0025] Figure 1 This is a schematic diagram of the overall structure of the screw locking device in this case. Figure 2 The schematic diagram of the positioning rod is shown in Figure 2. Figure 1 and Figure 2 The screw locking device 100 includes a positioning rod 1, a clamping jaw 2 and a locking bit 3. The positioning rod 1 is arranged in a vertical direction and includes a through hole H. The clamping jaw 2 is used to clamp and fix the screw. The locking bit 3 is movably arranged in the through hole H.
[0026] Continue to refer to Figure 1 and Figure 2 Specifically, the through hole H of the positioning rod 1 includes two parts, namely a first through hole H1 and a second through hole H2 connected to the first through hole. Figure 1 When the positioning rod 1 is placed vertically, the first through-hole H1 is located above the second through-hole H2, and the locking bit 3 is movably disposed in the first through-hole H1. The first through-hole H1 has a first diameter, and the second through-hole H2 has a second diameter, wherein the first diameter is smaller than the second diameter. The first diameter is, for example, 5 mm, but this is not a limitation in this case. Furthermore, because the diameters of the first through-hole H1 and the second through-hole H2 are different, when the positioning rod 1 is placed vertically, the connection between the first through-hole H1 and the second through-hole H2 forms an annular screw positioning surface F in the horizontal direction. When the screw is inserted into the positioning rod 1, the top surface of the screw cap contacts the screw positioning surface F.
[0027] Continue to refer to Figure 2The inner wall of the first through-hole H1 is also provided with multiple grooves L. When the top surface of the screw cap abuts against the screw positioning surface F, the air space within the first through-hole H1 gradually decreases as the locking bit 3 descends. At this time, the air is guided out of the narrow space within the first through-hole H1 through the grooves L, preventing the locking bit 3 from being unable to move downward. The second through-hole H2 is surrounded by a first notch G1 and a second notch G2. The inner end surface of the second through-hole H2 is provided with a chamfer R, which can expand the screw clamping range. Even if the screw is slightly misaligned, it can be correctly inserted into the positioning rod 1 and effectively clamped. The width of the chamfer R can be set to 0.5 mm, but this is not limited to this embodiment.
[0028] Figure 3 This is a schematic diagram of the structure of the clamping jaws in this case. Figure 4 This is a schematic diagram of the clamping claws gripping the screw. Figure 3 and Figure 4 As shown, the clamping jaw 2 includes a first clamping jaw 21 and a second clamping jaw 22. The first clamping jaw 21 includes a first body portion 21-1 and a first clamping jaw portion 21-2. The second clamping jaw 22 includes a second body portion 22-1 and a second clamping jaw portion 22-2. The first clamping jaw portion 21-2 and the second clamping jaw portion 22-2 respectively have an arc-shaped inclined surface L1 and an arc-shaped vertical surface L2. The arc-shaped inclined surface L1 is used to fit and fix the nail cap P1 of the screw P, and the arc-shaped vertical surface L2 is used to clamp the screw when the first clamping jaw portion 21-2 and the second clamping jaw portion 22-2 are clamped. Figure 3 and Figure 4 When the top surface S1 of the nail cap P1 abuts against the screw positioning surface F, the first clamping jaw portion 21-2 and the second clamping jaw portion 22-2 clamp the screw P through the first notch G1 and the second notch G2 respectively. When the clamping jaw 2 clamps the screw P, the arc-shaped inclined surface L1 will generate two components of force on the nail cap P1 in the horizontal direction and the vertical upward direction, wherein the horizontal component of force generated by the first clamping jaw 21-2 and the second clamping jaw 22-2 is equal in magnitude and opposite in direction, which plays the role of clamping the screw P, and the vertical upward force generated by the two clamping jaws on the nail cap P1 is equal in magnitude to the sum of the upward components of force generated by the two clamping jaws, pressing the nail cap P1 tightly against the screw positioning surface F inside the positioning rod 1. The force generated by the screw positioning surface F on the screw P is opposite to the vertical upward force generated by the clamping jaw 2, which plays the role of balancing, clamping and positioning the nail cap P1, and ensuring that the clamping jaw 2 can clamp the screw P in the correct position, wherein the correct position is, for example, Figure 3 At position Q shown in the figure. Under this clamping force design, the screw can drive the suspended terminal to move and ensure the center of the screw itself until it moves to the locking position and locks.
[0029] Figure 5 This is a partial structural diagram of the screw locking device in this case, as shown in Figure 5As shown, the screw locking device 100 further includes a clamping jaw cylinder 4, on which the first clamping jaw 21 and the second clamping jaw 22 are disposed. Furthermore, the screw locking device 100 further includes a limiting device 5, which includes a first limiting portion 51 and a second limiting portion 52 that are horizontally opposed and spaced apart. The first limiting portion 51 and the second limiting portion 52 are respectively used to limit the horizontal movement distance of the first clamping jaw 21 and the second clamping jaw 22.
[0030] Continue to refer to Figure 5 The screw locking device 100 also includes a fixed plate 6 and a floating mechanism 7. The positioning rod 1 is fixedly connected to the floating mechanism 7 via a connecting piece 8. The floating mechanism 7 is movably connected to the fixed plate 6 through a spring 9. The floating mechanism 7 can move in the vertical direction. The spring 9 is used to provide a tightening force when the nail head of the screw presses against the screw hole in the locking position.
[0031] Please refer to Figure 1 The screw locking device 100 further includes a camera 10 for acquiring the terminal position coordinates and the screw hole position coordinates. After the screw locking device 100 clamps the screw, it uses the acquired terminal position coordinates and screw hole position coordinates to lock the terminal to the screw hole using the screw.
[0032] The following combination Figure 1-5 The working process of the screw locking device 100 is described.
[0033] Step 1: The screw locking device 100 clamps the screw at the screw feeding position. When the screw cap contacts the chamfer R of the second through hole H2 of the positioning rod 1, the positioning rod 1 is overpressed downward by a first distance so that the top surface of the cap contacts the screw positioning surface F inside the positioning rod 1 to ensure that the clamping jaws 2 can clamp in the correct position on the screw when clamping.
[0034] Step 2: When the top surface of the nail cap abuts against the screw positioning surface F, the clamping jaw 2 clamps the screw P.
[0035] Step 3: After the screw locking device 100 clamps the screw P, it places the screw in the terminal hole of the terminal according to the acquired terminal position coordinates and screw hole position coordinates, and moves the terminal to the locking position so that the screw is located at the screw hole position.
[0036] Step 4: The positioning rod 1 moves downward a second distance, the floating mechanism is tightened by the spring, and the positioning rod 1 presses the screw P against the screw hole through the tightening force provided by the spring, and then the clamping jaw 2 is loosened, and the nail cap is still confined in the positioning rod 1.
[0037] Step 5: Lower the screwdriver bit 3 and rotate it to lock the screw into the screw hole. The terminal block is always on the outside of the screw, so the terminal block is tightly locked on the screw hole.
[0038] In summary, the present invention provides a screw locking device, comprising: a positioning rod, which is arranged in a vertical direction and includes a through hole; a clamping claw, which is used to clamp and fix the screw; and a locking bit, which is movably arranged in the through hole.
[0039] The through-hole comprises: a first through-hole having a first diameter; and a second through-hole communicating with the first through-hole and having a second diameter, the first diameter being smaller than the second diameter. The positioning rod forms a screw-positioning surface horizontally at the connection point between the first and second through-holes. The locking bit is movably disposed within the first through-hole. The inner wall of the first through-hole is defined by at least one groove. The inner wall of the second through-hole has a chamfered end surface. When the screw abuts the screw-positioning surface, the clamping jaws clamp the screw.
[0040] The clamp includes: a first clamp, including a first body part and a first clamp part; and a second clamp, including a second body part and a second clamp. The first clamp and the second clamp respectively have an arc-shaped inclined surface and an arc-shaped vertical surface. The arc-shaped inclined surface is used to fit and fix the nail cap of the screw.
[0041] A first notch and a second notch are provided around the second through hole of the positioning rod, and the first clamping jaw part and the second clamping jaw part clamp the screw via the first notch and the second notch respectively.
[0042] The screw locking device further comprises a clamping claw cylinder, on which the clamping claw is arranged.
[0043] The screw locking device also includes a limiting device, which is arranged on the clamping cylinder and includes a first limiting portion and a second limiting portion that are opposite and spaced apart in the horizontal direction. The first limiting portion and the second limiting portion are respectively used to limit the horizontal movement distance of the first clamping jaw and the second clamping jaw.
[0044] The screw locking device also includes a fixed plate and a floating mechanism. The positioning rod is fixedly connected to the floating mechanism. The floating mechanism is movably connected to the fixed plate through a spring. The floating mechanism can move in the vertical direction. The spring is used to provide a tightening force when the screw is pressed against the screw hole.
[0045] The screw locking device also includes a camera, which is used to obtain the position coordinates of the connection terminal and the position coordinates of the screw hole.
[0046] The screw locking device provided in this case uses a positioning rod and two clamping jaws to firmly fix the screw in a uniform position and direction. The screw will not swing in any direction. After the screw is inserted into the terminal hole and drives the terminal to overcome the internal pulling pressure of the terminal wire, the screw will not swing in any position. The uniqueness of the screw position data is effectively realized, the purpose of automatic locking of the terminal is achieved, and the degree of automation and assembly efficiency of terminal locking are effectively improved.
[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of protection of the present invention shall be based on the scope defined by the appended claims.
Claims
1. A screw locking device, characterized in that: Include: A positioning rod is arranged in a vertical direction and includes a through hole; Gripping jaws for gripping and securing screws; and The locking bit is movably arranged in the through hole.
2. The screw locking device according to claim 1, characterized in that: The through hole comprises: a first through hole having a first diameter; and a second through hole, communicating with the first through hole and having a second diameter, wherein the first diameter is smaller than the second diameter; Wherein, the positioning rod forms a screw positioning surface along the horizontal direction at the connection point between the first through hole and the second through hole.
3. The screw locking device according to claim 2, characterized in that: The locking bit is movably disposed in the first through hole.
4. The screw locking device according to claim 3, characterized in that: At least one groove is formed on the inner wall of the first through hole.
5. The screw locking device according to claim 2, characterized in that: An inner wall end surface of the second through hole is chamfered.
6. The screw locking device according to claim 2, characterized in that: When the screw abuts the screw positioning surface, the clamping jaws clamp the screw.
7. The screw locking device according to claim 2, characterized in that: The clamping jaws include: A first clamping jaw, comprising a first body portion and a first clamping jaw portion; and The second clamping jaw comprises a second body portion and a second clamping jaw portion, The first clamping jaw portion and the second clamping jaw portion respectively have an arc-shaped inclined surface and an arc-shaped vertical surface, and the arc-shaped inclined surface is used to fit and fix the nail cap of the screw.
8. The screw locking device according to claim 7, characterized in that: A first notch and a second notch are provided around the second through hole of the positioning rod, and the first clamping jaw and the second clamping jaw clamp the screw via the first notch and the second notch respectively.
9. The screw locking device according to claim 7, characterized in that: It also includes a clamping claw cylinder, and the clamping claw is arranged on the clamping claw cylinder.
10. The screw locking device according to claim 9, characterized in that: It also includes a limiting device, which is arranged on the clamping cylinder and includes a first limiting part and a second limiting part which are arranged opposite to and spaced apart in the horizontal direction. The first limiting part and the second limiting part are respectively used to limit the horizontal movement distance of the first clamping jaw and the second clamping jaw.
11. The screw locking device according to claim 1, characterized in that: It also includes a fixed plate and a floating mechanism. The positioning rod is fixedly connected to the floating mechanism. The floating mechanism is movably connected to the fixed plate through a spring. The floating mechanism can move in the vertical direction. The spring is used to provide a tightening force when the screw presses against the screw hole.
12. The screw locking device according to claim 1, characterized in that: It also includes a camera, which is used to obtain the position coordinates of the connection terminals and the screw holes.