CN218836907U

CN218836907U - Steel ball pull-down locking cylinder

Info

Publication number: CN218836907U
Application number: CN202223017020.9U
Authority: CN
Inventors: 张晓涛; 昝艳辉; 高豪爽; 林宇
Original assignee: Zhejiang Fengzhou Precision Manufacturing Co ltd
Current assignee: Zhejiang Fengzhou Precision Manufacturing Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-04-11
Anticipated expiration: 2032-11-14

Abstract

The utility model relates to a locking jar is drawn down to steel ball, including draw bolt and cylinder body, the cylinder body has an inner chamber, slidable mounting has the piston rod in this inner chamber, install the installation cover in the inner chamber upper portion, the port seals through the bottom under the inner chamber, install first release spring between piston rod and the bottom, gliding clamping sleeve about piston rod internally mounted, clamping sleeve upper portion has been arranged around the circumference and has been pressed from both sides tight steel ball by a plurality of, the round step has been arranged to the clamping sleeve lower part, the step is detained under the piston rod on the terminal surface, install second release spring between step and the bottom, the inner wall of installation cover has been arranged the round and has been held the mounting groove who presss from both sides tight steel ball, gliding guide arm about the clamping sleeve internally mounted, install reset spring between guide arm and the bottom, the locking recess has been arranged to draw bolt lower part round, be equipped with the oil inlet pipe way of inner chamber upper portion intercommunication on the cylinder body. The utility model designs a brand-new binding clasp, utilize the convenient dismantlement work piece that draw bolt can relax.

Description

Steel ball pull-down locking cylinder

Technical Field

The utility model relates to a binding clasp technical field especially relates to a steel ball pull-down locking cylinder.

Background

At present, a workpiece positioning and clamping device manufactured in China generally adopts a linear cylinder and crank sliding block mechanism to realize the function of clamping a workpiece, so that the workpiece is ensured not to move, and the safety and the standardization of processing the workpiece are improved. However, the workpiece positioning and clamping device in the prior art has the following disadvantages: 1. occupies large space; 2. the design and manufacture period is long; 3. the structure is complicated, the maintenance is tedious, and the work piece is dismantled trouble. Therefore, a new design of a clamp is required.

Disclosure of Invention

The utility model aims to solve the technical problem that a steel ball pull-down locking jar is provided, has designed a brand-new binding clasp, utilizes draw bolt can relax convenient dismantlement work piece, and draw bolt from top to bottom inserts the cylinder body gently in, and the work piece is sat in the cylinder body upper end, through advancing oil pipe way control clamping sleeve and pressing from both sides tight steel ball downstream, presss from both sides tight steel ball and withstands the lower terminal surface of locking recess and holds draw bolt to make the work piece just firmly taut at the cylinder body up end completely.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a steel ball pull-down locking cylinder, includes draw bolt and cylinder body, the cylinder body have an inner chamber, slidable mounting has the piston rod in this inner chamber, inner chamber upper portion in install the installation cover, the port seals through the bottom under this inner chamber, piston rod and bottom between install first release spring, piston rod internally mounted have gliding clamping sleeve from top to bottom, clamping sleeve upper portion around the circumference arranged a plurality of press from both sides tight steel ball, the clamping sleeve lower part arranged the round step, the step detain on the terminal surface under the piston rod, install second release spring between this step and the bottom, the inner wall of installation cover arranged the round and held the mounting groove who presss from both sides tight steel ball, clamping sleeve internally mounted have gliding guide arm from top to bottom, install reset spring between this guide arm and the bottom, draw bolt lower part arranged the round and lock the recess, this draw bolt lower extreme inserts in the clamping sleeve, the cylinder body on be equipped with the oil inlet pipe way of inner chamber upper portion intercommunication.

As right technical scheme a supplement, bottom upper end middle part be equipped with a cylinder arch, a spacing post is installed in the embedding of this protruding middle part of cylinder, bottom upper end around the cylinder arch arranged annular arch, port threaded connection under this bellied outer wall of annular and the inner chamber, second release spring lower extreme cover on the cylinder arch, reset spring lower extreme cover on spacing post, guide arm bottom seted up circular recess, reset spring upper end insert in the circular recess, first release spring lower part hug closely annular bellied inner wall.

It is right as a technical scheme a supplement, inner chamber upper portion in install the position sleeve, the round support protrusion has been arranged at the middle part in this position sleeve, the installation cover install on support protrusion, piston rod upper portion insert in the position sleeve, and the piston rod is located support protrusion below.

As right technical scheme a supplement, the shape of the vertical cross-section of mounting groove and the shape of the vertical cross-section of locking groove be isosceles trapezoid.

As a supplement to the technical scheme of the utility model, guide arm upper portion seted up round annular groove.

As a supplement to the technical scheme of the utility model, the shape of the vertical cross-section of annular groove be isosceles trapezoid.

As right technical scheme a supplement, cylinder body upper end seted up the round platform hole, this round platform hole and clamping sleeve intercommunication, the aperture in round platform hole from top to bottom diminish gradually, draw bolt upper portion be equipped with the round platform arch that the round platform hole matches.

Has the beneficial effects that: the utility model relates to a locking cylinder under steel ball pull-down, through draw bolt dress card work piece, then insert draw bolt in the cylinder body from top to bottom gently, the guide arm downstream under draw bolt's effect, seat on the cylinder body upper end until the work piece, supply with the oil pressure through advancing oil pipe way and make the piston rod downstream under the oil pressure effect, the tight cover of clamp simultaneously moves downstream under the effect of piston rod, and press from both sides tight steel ball also move downstream together under the effect of clamp sleeve, press from both sides tight steel ball gliding to the locking recess in, hold draw bolt until pressing from both sides the lower terminal surface that tight steel ball withstood the locking recess, thereby make the work piece just firmly by taut on the cylinder body up end completely. The utility model discloses have powerful holding power, utilize the convenient dismantlement work piece that draw bolt can relax.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the clamping sleeve according to the present invention;

fig. 3 is a cross-sectional view of the positioning sleeve and the mounting sleeve according to the present invention;

fig. 4 is a cross-sectional view of a guide bar according to the present invention;

fig. 5 is a schematic structural view of the draw bolt of the present invention.

The figure is as follows: 1. the device comprises a workpiece, 2, a traction bolt, 3, a cylinder body, 4, a piston rod, 5, a positioning sleeve, 6, an installation sleeve, 7, a bottom cover, 8, a limiting column, 9, a guide rod, 10, a clamping steel ball, 11, a reset spring, 12, a first release spring, 13, a second release spring, 14, an inner cavity, 15, a clamping sleeve, 16, a circular truncated cone hole, 17, a cylindrical protrusion, 18, an annular protrusion, 19, an installation groove, 20, a supporting protrusion, 21, a locking groove, 22, a circular groove, 23, a circular truncated cone protrusion, 24, an annular groove, 25 and a step.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications can be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

The embodiment of the utility model relates to a steel ball pull-down locking cylinder, as shown in fig. 1-5, including traction bolt 2 and cylinder body 3, cylinder body 3 have an inner chamber 14, slidable mounting has piston rod 4 in this inner chamber 14, inner chamber 14 upper portion in install mounting sleeve 6, the port seals through bottom 7 under this inner chamber 14, piston rod 4 and bottom 7 between install first release spring 12, piston rod 4 internally mounted have gliding clamping sleeve 15 from top to bottom, clamping sleeve 15 upper portion around the circumference arranged a plurality of press from both sides tight steel ball 10, round step 25 has been arranged to this clamping sleeve 15 lower part, step 25 detain under piston rod 4 on the terminal surface, install second release spring 13 between this step 25 and the bottom 7, the inner wall of mounting sleeve 6 arrange the round and hold the mounting groove 19 who presss from both sides tight steel ball 10, clamping sleeve 15 internally mounted have gliding guide arm 9 from top to bottom, install reset spring 11 between this guide arm 9 and the bottom 7, traction bolt 2 lower part locking recess 21, this traction bolt 2 lower extreme inserts in the cylinder body 15, the oil inlet pipe way intercommunication has been arranged on the upper portion of 3 and the bottom 14 inner chamber intercommunication.

The middle part of the upper end of the bottom cover 7 is provided with a cylindrical bulge 17, the middle part of the cylindrical bulge 17 is embedded with a limit column 8, the upper end of the bottom cover 7 is provided with an annular bulge 18 around the cylindrical bulge 17, the outer wall of the annular bulge 18 is in threaded connection with the lower port of the inner cavity 14, the lower end of the second release spring 13 is sleeved on the cylindrical bulge 17, the lower end of the reset spring 11 is sleeved on the limit column 8, the bottom of the guide rod 9 is provided with a circular groove 22, the upper end of the reset spring 11 is inserted into the circular groove 22, and the lower part of the first release spring 12 is tightly attached to the inner wall of the annular bulge 18.

The return spring 11, the first release spring 12 and the second release spring 13 are concentrically arranged, wherein the return spring 11 is positioned innermost, the first release spring 12 is positioned outermost and the second release spring 13 is positioned in the middle.

The upper part of the inner cavity 14 is internally and fixedly provided with a positioning sleeve 5, the middle part in the positioning sleeve 5 is provided with a circle of supporting bulges 20, the position of the mounting sleeve 6 is limited by the inner wall at the upper part of the positioning sleeve 5 and the supporting bulges 20, the upper part of the piston rod 4 is inserted into the positioning sleeve 5, and the piston rod 4 is positioned below the supporting bulges 20.

The shape of the vertical section of the mounting groove 19 and the shape of the vertical section of the locking groove 21 are isosceles trapezoids.

A ring of annular groove 24 is formed in the upper part of the guide rod 9; the vertical section of the annular groove 24 is in the shape of an isosceles trapezoid.

The upper end of the cylinder body 3 is provided with a circular truncated cone hole 16, the circular truncated cone hole 16 is communicated with the clamping sleeve 15, the aperture of the circular truncated cone hole 16 is gradually reduced from top to bottom, and the upper part of the traction bolt 2 is provided with a circular truncated cone bulge 23 matched with the circular truncated cone hole 16; the circular truncated cone bulges 23 are matched with the circular truncated cone holes 16, so that the workpiece 1 can be positioned and installed.

The device of the utility model is generally used for matching 2, 4 and other even numbers with the workpiece 1.

One will now be described as an example. As shown in fig. 1, before clamping, the workpiece 1 is clamped, the upper end of the draw bolt 2 is screwed with the threaded hole at the bottom of the locking workpiece 1, then the draw bolt 2 is slightly inserted into the cylinder body 3 from top to bottom, and the guide rod 9 moves downwards under the action of the draw bolt 2 until the workpiece 1 is seated on the upper end of the cylinder body 3 (i.e. the boss 23 of the circular truncated cone is inserted into the circular truncated cone hole 16); when clamping is needed, oil pressure is supplied through an oil inlet pipeline, so that the piston rod 4 moves downwards under the action of the oil pressure, meanwhile, the clamping sleeve 15 moves downwards under the action of the piston rod 4, the clamping steel balls 10 also move downwards under the action of the clamping sleeve 15 (the clamping steel balls 10 are located in the mounting groove 19 in the initial state), the clamping steel balls 10 slide downwards into the locking groove 21 until the clamping steel balls 10 abut against the lower end face of the locking groove 21 to pull the traction bolt 2, and therefore the workpiece 1 is completely and firmly tensioned on the upper end face of the cylinder body 3.

When the release is required, the oil supply to the inner chamber 14 is stopped, and the components in the cylinder 3 are returned to the original positions by the return spring 11, the first release spring 12, and the second release spring 13.

In an initial state, the clamping steel balls 10 are located in the mounting groove 19, the distance between the plurality of clamping steel balls 10 is large, the guide rod 9 and the traction bolt 2 can smoothly pass through the clamping steel balls 10, when clamping is needed, the clamping steel balls 10 also run downwards under the action of the clamping sleeve 15, the clamping steel balls 10 are separated from the mounting groove 19 and downwards along the inner wall of the mounting sleeve 6, the distance between the plurality of clamping steel balls 10 is reduced, and the clamping steel balls 10 slide into the locking groove 21 to pull the traction bolt 2.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, upper, lower, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The steel ball pull-down locking cylinder provided by the application is introduced in detail, specific examples are applied in the text to explain the principle and the implementation of the application, and the description of the above embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. The utility model provides a steel ball pull-down locking cylinder, includes towing bolt (2) and cylinder body (3), its characterized in that: the cylinder body (3) is provided with an inner cavity (14), the piston rod (4) is arranged in the inner cavity (14) in a sliding way, the upper part of the inner cavity (14) is internally provided with a mounting sleeve (6), the lower port of the inner cavity (14) is sealed by a bottom cover (7), a first release spring (12) is arranged between the piston rod (4) and the bottom cover (7), a clamping sleeve (15) which slides up and down is arranged in the piston rod (4), a plurality of clamping steel balls (10) are arranged at the upper part of the clamping sleeve (15) around the circumference, a circle of steps (25) are arranged at the lower part of the clamping sleeve (15), the steps (25) are buckled on the lower end surface of the piston rod (4), a second release spring (13) is arranged between the step (25) and the bottom cover (7), a circle of mounting grooves (19) for accommodating the clamping steel balls (10) are arranged on the inner wall of the mounting sleeve (6), a guide rod (9) which slides up and down is arranged in the clamping sleeve (15), a return spring (11) is arranged between the guide rod (9) and the bottom cover (7), a circle of locking groove (21) is arranged at the lower part of the traction bolt (2), the lower end of the traction bolt (2) is inserted into the clamping sleeve (15), and an oil inlet pipeline communicated with the upper part of the inner cavity (14) is arranged on the cylinder body (3).

2. A steel ball pull down lock cylinder as defined in claim 1 wherein: the middle part of the upper end of the bottom cover (7) is provided with a cylindrical protrusion (17), the middle part of the cylindrical protrusion (17) is embedded with a limiting column (8), the upper end of the bottom cover (7) surrounds the cylindrical protrusion (17) and is provided with an annular protrusion (18), the outer wall of the annular protrusion (18) is in threaded connection with the lower end opening of the inner cavity (14), the lower end of the second release spring (13) is sleeved on the cylindrical protrusion (17), the lower end of the reset spring (11) is sleeved on the limiting column (8), the bottom of the guide rod (9) is provided with a circular groove (22), the upper end of the reset spring (11) is inserted into the circular groove (22), and the lower part of the first release spring (12) is tightly attached to the inner wall of the annular protrusion (18).

3. A steel ball pull down lock cylinder as defined in claim 1 wherein: the inner cavity (14) upper portion in install position sleeve (5), the middle part in this position sleeve (5) has arranged round support protrusion (20), installation cover (6) install on support protrusion (20), piston rod (4) upper portion insert in position sleeve (5), and piston rod (4) are located support protrusion (20) below.

4. A steel ball pull down lock cylinder as defined in claim 1 wherein: the shape of the vertical section of the mounting groove (19) and the shape of the vertical section of the locking groove (21) are isosceles trapezoids.

5. A steel ball pull down locking cylinder as claimed in claim 1, wherein: the upper part of the guide rod (9) is provided with a ring-shaped groove (24).

6. A steel ball pull down lock cylinder according to claim 5, wherein: the vertical section of the annular groove (24) is in an isosceles trapezoid shape.

7. A steel ball pull down lock cylinder as defined in claim 1 wherein: cylinder body (3) upper end seted up round platform hole (16), this round platform hole (16) and clamp sleeve (15) intercommunication, the aperture of round platform hole (16) from top to bottom diminish gradually, draw bolt (2) upper portion be equipped with round platform arch (23) that round platform hole (16) match.