CN216642634U - Single-shaft rotation stopping cylinder - Google Patents

Abstract

The utility model relates to a single-shaft rotation stopping air cylinder which comprises a cylinder body, a guide sleeve, a square shaft and a piston, wherein the piston, the square shaft and the guide sleeve are sequentially arranged in a cylinder cavity of the cylinder body, the square shaft is fixedly connected with the piston and reciprocates in the cylinder cavity along with the piston, the guide sleeve is clamped at an opening of the cylinder cavity through a limiting structure, the guide sleeve is provided with a rotation stopping hole matched with the cross section of the square shaft in shape, the square shaft penetrates through the rotation stopping hole, the outer side wall of the square shaft is in sliding connection with the wall of the rotation stopping hole, and the guide sleeve limits the rotation of the square shaft through the rotation stopping hole. The cylinder body is provided with the guide sleeve and the rotation stopping hole, the guide sleeve is clamped on the cylinder body through the limiting structure, the guide sleeve is quickly assembled, parts required by the cylinder are reduced, the production cost is reduced, the rotation of the square shaft is prevented through the square shaft and the rotation stopping hole which are matched with each other, the rotation stopping contact area between the square shaft and the rotation stopping hole is large, and the better rotation stopping effect is ensured.

Description

Single-shaft rotation stopping cylinder

Technical Field

The utility model relates to the technical field of cylinders, in particular to a single-shaft rotation stopping cylinder.

Background

In the injection molding machine working process, the injection molding machine manipulator needs to take out the product that moulds plastics from the injection molding machine, then carries ejection of compact station, and the injection molding machine manipulator needs the cylinder to absorb or press from both sides the product, in the injection molding machine that adopts a mould many caves injection mold, the injection molding machine manipulator needs to adopt a plurality of small-size cylinders to make a plurality of the same absorption or press from both sides and get the action, and this type of cylinder needs the cylinder drive shaft to keep the state of not changeing when making the action to keep the precision of action.

The utility model discloses a prevent revolving cylinder in chinese utility model with application number CN201920736124.4, comprising a cylinder body, the drive shaft, piston and end cover, link up on the cylinder body and seted up the mounting hole, the mounting hole is worn to locate with sliding to the drive shaft, the piston locate in the mounting hole and with drive shaft fixed connection, the one end that the drive shaft was kept away from to the mounting hole is located to the end cover lid, the drive shaft is including the portion of splining and fixed part, the fixed part is connected with the piston, the portion of splining is connected in the one end that the piston was kept away from to the fixed part, the radial cross sectional area of the portion of splining is less than the radial cross sectional area of fixed part, prevent revolving cylinder still including installing the piece of splining of keeping away from end cover one end in the mounting hole, the portion of splining can pass the hole of splining reciprocally, the appearance of splining cross-section suits in order to restrict the portion of splining to rotate with the appearance of splining. The rotation stopping part adopts the hexagonal prism, the clearance between the hexagonal prism and the hexagonal rotation stopping hole needs to be designed to be smaller to play the rotation stopping function (the rotation stopping hole limits the rotation of the hexagonal prism), meanwhile, the clearance between the hexagonal prism and the rotation stopping hole needs to meet the assembly requirement and the requirement of the reciprocating movement of the hexagonal prism, the machining precision among the rotation stopping part, the rotation stopping hole and the rotation stopping piece is higher, the production cost of the cylinder is higher, meanwhile, the rotation stopping piece needs to be fixed on the cylinder body through a screw, and the purchase cost of parts is increased.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the utility model provides a single-shaft rotation stopping cylinder which prevents a square shaft as a single shaft from rotating on a cavity through the limitation of a rotation stopping hole.

In order to achieve the purpose, the technical scheme provided by the utility model is as follows: the utility model provides a unipolar splines cylinder, includes cylinder body, guide pin bushing, square shaft, piston, square shaft, guide pin bushing set gradually at the jar intracavity of cylinder body, square shaft and piston rigid coupling and along with the piston at jar intracavity reciprocating motion, the guide pin bushing passes through the opening part of limit structure joint at jar chamber, the guide pin bushing is provided with the shape assorted with the square shaft cross section and splines the hole, the square shaft is worn to establish in the hole that splines, the lateral wall of square shaft and the pore wall sliding connection who splines the hole, the rotation takes place for the guide pin bushing through the hole restriction square shaft that splines.

In the above technical solution, the square shaft is a rectangular shaft, and the hole pattern of the rotation stopping hole is a rectangular hole; or the square shaft is a square shaft, and the hole type of the rotation stopping hole is a square hole.

In the above technical scheme, the rotation stopping hole is located at the axis of the guide sleeve.

In the above technical scheme, the limiting structure comprises a limiting groove arranged on the inner wall of the cylinder cavity and a convex point arranged on the outer wall of the guide sleeve, the limiting groove is arranged along the axial direction of the cylinder body, and the convex point is embedded in the limiting groove and is used for limiting the guide sleeve at the opening of the cylinder cavity of the cylinder body in a clamping manner.

In the technical scheme, the limiting structure comprises a limiting groove arranged on the inner wall of the cylinder cavity, a groove arranged on the outer wall of the guide sleeve and a bolt, the limiting groove is arranged along the axial direction of the cylinder body, and the bolt is inserted between the limiting groove and the groove and used for limiting the guide sleeve to be clamped at the opening of the cylinder cavity of the cylinder body.

In the technical scheme, the cylinder comprises a cylinder cavity, and is characterized by further comprising a clamp spring, wherein a clamping groove is formed in an opening of the cylinder cavity, the clamp spring is clamped in the clamping groove, and the clamp spring is located on the outer side of the guide sleeve to prevent the guide sleeve from being separated from the cylinder cavity.

In the above technical scheme, the inner wall of the cylinder cavity is provided with a circle of limiting steps, the guide sleeve is provided with an outer step abutted against the limiting steps, and the guide sleeve is clamped between the clamp spring and the limiting steps.

In the above technical scheme, the spring is further included, the spring sleeve is arranged on the square shaft, and two ends of the spring are respectively abutted against the piston and the guide sleeve.

In the above technical scheme, the cylinder body is provided with an air inlet hole and an air outlet hole which are communicated with the cylinder cavity, and the air inlet hole and the air outlet hole are symmetrically arranged on two sides of the cavity.

In the above technical scheme, the guide sleeve is a plastic guide sleeve or a metal guide sleeve.

The cylinder has the advantages that the structure is reasonable, the design is novel, the practicability is high, the guide sleeve is formed integrally, the functions of guiding and stopping rotation of the square shaft are achieved, the guide sleeve is clamped on the cylinder body through the limiting structure, the guide sleeve is assembled quickly, parts required by the cylinder are reduced, the production cost is reduced, the square shaft is prevented from rotating through the square shaft and the rotation stopping hole which are matched with each other, the rotation stopping contact area between the square shaft and the rotation stopping hole is large, and the better rotation stopping effect is guaranteed.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is one of schematic cross-sectional structural views in embodiment 1 of the present invention.

Fig. 3 is a second schematic cross-sectional view of embodiment 1 of the present invention.

Fig. 4 is a schematic diagram of a partially exploded structure of embodiment 1 of the present invention (springs, circlips, and leather rings are not shown).

Fig. 5 is a schematic cross-sectional structure diagram of embodiment 2 of the present invention.

In the figure: 1. a cylinder body; 11. a cylinder chamber; 12. a limiting groove; 13. a card slot; 14. a limiting step; 15. mounting holes; 16. an air inlet; 17. an air outlet; 2. a piston; 3. a square shaft; 4. a guide sleeve; 41. salient points; 42. a rotation stopping hole; 43. a semicircular hole; 44. an outer step; 45. a groove; 5. a spring; 6. a clamp spring; 7. and (4) a bolt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments provided by the present invention, belong to the protection scope of the present invention. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the utility model. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one of ordinary skill in the art that the described embodiments of the present invention can be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the utility model are not to be construed as limiting in number, and may be construed to cover both the singular and the plural. The present invention relates to the terms "comprises," "comprising," "includes," "including," "has," "having" and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "connected," "coupled," and the like in the description of the utility model are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The terms "first," "second," "third," and the like in reference to the present invention are used merely to distinguish between similar objects and not necessarily to represent a particular ordering for the objects.

As shown in fig. 1, in order to prevent the piston 2 from rotating on its axis, the axis is set as a square axis 3, and the rotation of the square axis 3 is restricted by a square rotation-preventing hole 42 in the guide bush 4.

Embodiment 1, this embodiment is taken as an optimal implementation manner, as shown in fig. 1 to 4, a single-shaft rotation stopping cylinder includes a cylinder body 1, a guide sleeve 4, a square shaft 3, a piston 2, a spring 5, and a clamp spring 6, where the piston 2, the square shaft 3, and the guide sleeve 4 are sequentially disposed in a cylinder cavity 11 of the cylinder body 1, the square shaft 3 is fixedly connected to the piston 2 and reciprocates in the cylinder cavity 11 along with the piston 2, the guide sleeve 4 is clamped at an opening of the cylinder cavity 11 through a limiting structure, the guide sleeve 4 is provided with a rotation stopping hole 42 matching with a cross section of the square shaft 3 in shape, the square shaft 3 penetrates through the rotation stopping hole 42, an outer side wall of the square shaft 3 is slidably connected to a wall of the rotation stopping hole 42, and the guide sleeve 4 limits the rotation of the square shaft 3 through the rotation stopping hole 42. The spring 5 is a spring 5 as a return so that the square shaft 3 and the piston 2 can be returned, and in a cylinder without the spring 5, the return of the square shaft 3 and the piston 2 is controlled by a gas source.

The square shaft 3 is a rectangular shaft, and the hole type of the rotation stopping hole 42 is a rectangular hole; or the square shaft 3 is a square shaft, and the hole type of the rotation stopping hole 42 is a square hole. The rotation stopping hole 42 is positioned at the axis of the guide sleeve 4.

The angle between two adjacent inner walls of the tetragonal rotation stopping hole 42 is 90 degrees, and when the square shaft 3 receives the action of the rotation torque, the rotation stopping contact action surface between the outer side wall of the square shaft 3 and the inner wall of the rotation stopping hole 42 is larger, so that the rotation stopping effect is better.

One end of the square shaft 3 is fixed on the piston 2 through welding or screws, the other end of the square shaft 3 is provided with a bolt hole for installing an external component, and the piston 2 is sleeved with a leather ring to realize the function of the piston 2.

The limiting structure comprises a limiting groove 12 arranged on the inner wall of the cylinder cavity 11 and a convex point 41 arranged on the outer wall of the guide sleeve 4, the limiting groove 12 is arranged along the axial direction of the cylinder body 1, the convex point 41 is embedded in the limiting groove 12, and the guide sleeve 4 is clamped and limited at the opening of the cylinder cavity 11 of the cylinder body 1.

In this embodiment 1, as shown in fig. 2-3, a snap groove 13 is disposed at the opening of the cylinder cavity 11, the snap spring 6 is snapped in the snap groove 13, and the snap spring 6 is located outside the guide sleeve 4 to prevent the guide sleeve 4 from being separated from the cylinder cavity 11. A circle of limiting steps 14 are arranged on the inner wall of the cylinder cavity 11, an outer step 44 abutted against the limiting steps 14 is arranged on the guide sleeve 4, and the guide sleeve 4 is clamped between the clamp spring 6 and the limiting steps 14.

The spring 5 is sleeved on the square shaft 3, and two ends of the spring 5 are respectively abutted against the piston 2 and the guide sleeve 4.

The cylinder body 1 is provided with an air inlet hole 16 and an air outlet hole 17 which are communicated with the cylinder cavity 11, and the air inlet hole 16 and the air outlet hole 17 are symmetrically arranged at two sides of the cavity. Two through mounting holes 15 are opened on the cylinder body 1, and the cylinder is installed on the equipment by assembling screws through the mounting holes 15.

The guide sleeve 4 can be a plastic guide sleeve 4 or a metal guide sleeve 4, and the plastic guide sleeve 4 can be integrally formed by injection molding, so that the production efficiency is high, and the production cost is low; the metal guide sleeve 4 is adopted, a square hole needs to be machined through a machine tool, the machining difficulty is high, and the cost is high, so that the plastic guide sleeve 4 is adopted in the embodiment 1. The cylinder body 1 is a metal cylinder body 1 which is integrally processed and formed, so that the cylinder has higher structural strength.

In the present embodiment 1, in order to enable the square shaft 3 to slide smoothly in the rotation stop hole 42, lubrication between the outer side wall of the square shaft 3 and the inner wall of the rotation stop hole 42 is required, and lubrication may be performed by adding lubricating oil.

For the square shaft 3 can be better move to at the rotation stopping hole 42, semicircle orifice 43 is all seted up along the axial in every inner wall department of rotation stopping hole 42, can be with air or lubricating oil leading-in the contact surface between the square shaft 3 lateral wall and the rotation stopping hole 42 inner wall through semicircle orifice 43, avoid the bonding of square shaft 3 lateral wall and rotation stopping hole 42 inner wall for square shaft 3 can be in the smooth reciprocating motion in rotation stopping hole 42.

In the case of the example 2, the following examples are given,

as shown in fig. 1 and 5, a single-shaft rotation stopping cylinder, including cylinder body 1, guide sleeve 4, square shaft 3, piston 2, spring 5, jump ring 6, piston 2, square shaft 3, guide sleeve 4 sets gradually in cylinder cavity 11 of cylinder body 1, square shaft 3 and piston 2 rigid coupling and along with piston 2 reciprocating motion in cylinder cavity 11, guide sleeve 4 passes through the opening part of limit structure joint at cylinder cavity 11, guide sleeve 4 is provided with the shape assorted rotation stopping hole 42 with square shaft 3 cross section, square shaft 3 wears to establish in rotation stopping hole 42, the lateral wall of square shaft 3 and the pore wall sliding connection of rotation stopping hole 42, guide sleeve 4 restricts square shaft 3 through rotation stopping hole 42 and takes place the rotation.

The square shaft 3 is a rectangular shaft, and the hole type of the rotation stopping hole 42 is a rectangular hole; or the square shaft 3 is a square shaft, and the hole type of the rotation stopping hole 42 is a square hole. The rotation stopping hole 42 is positioned at the axis of the guide sleeve 4.

The limiting structure comprises a limiting groove 12 arranged on the inner wall of the cylinder cavity 11, a groove 45 arranged on the outer wall of the guide sleeve 4 and a bolt 7, wherein the limiting groove 12 is arranged along the axial direction of the cylinder body 1, and the bolt 7 is inserted between the limiting groove 12 and the groove 45 and used for limiting the guide sleeve 4 to be clamped at the opening of the cylinder cavity 11 of the cylinder body 1. The guide sleeve 4 is limited by the bolt 7.

A clamping groove 13 is formed in the opening of the cylinder cavity 11, the clamp spring 6 is clamped in the clamping groove 13, and the clamp spring 6 is located on the outer side of the guide sleeve 4 to prevent the guide sleeve 4 and the plug pin 7 from being separated from the cylinder cavity 11.

A circle of limiting steps 14 are arranged on the inner wall of the cylinder cavity 11, an outer step 44 abutted against the limiting steps 14 is arranged on the guide sleeve 4, and the guide sleeve 4 is clamped between the clamp spring 6 and the limiting steps 14.

The spring 5 is sleeved on the square shaft 3, and two ends of the spring 5 are respectively abutted against the piston 2 and the guide sleeve 4.

The cylinder body 1 is provided with an air inlet hole 16 and an air outlet hole 17 which are communicated with the cylinder cavity 11, and the air inlet hole 16 and the air outlet hole 17 are symmetrically arranged at two sides of the cavity. The cylinder body 1 is an integrally formed cylinder body 1.

The utility model has reasonable structure, novel design and strong practicability, the guide sleeve 4 which is integrally formed has the functions of guiding and stopping rotation of the square shaft 3, the guide sleeve 4 is clamped on the cylinder body 1 through the limiting structure, the quick assembly of the guide sleeve 4 is realized, the parts required by the cylinder are reduced, the production cost is reduced, the rotation of the square shaft 3 is prevented through the square shaft 3 and the rotation stopping hole 42 which are matched with each other, the rotation stopping contact area between the square shaft 3 and the rotation stopping hole 42 is larger, and the better rotation stopping effect is ensured.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims (10)

1. The utility model provides a unipolar splines cylinder, its characterized in that, includes cylinder body, guide pin bushing, square shaft, piston, square shaft, guide pin bushing set gradually at the jar intracavity of cylinder body, square shaft and piston rigid coupling and along with the piston at jar intracavity reciprocating motion, the guide pin bushing passes through the opening part of limit structure joint at jar chamber, the guide pin bushing is provided with the shape assorted with square shaft cross section and splines the hole, the square shaft is worn to establish in the hole that splines, the lateral wall of square shaft and the pore wall sliding connection who splines the hole, the rotation takes place through the restriction square shaft of the hole that splines to the guide pin bushing.

2. The single-shaft anti-rotation cylinder according to claim 1, wherein the square shaft is a rectangular shaft, and the hole pattern of the anti-rotation hole is a rectangular hole; or the square shaft is a square shaft, and the hole type of the rotation stopping hole is a square hole.

3. The single-shaft anti-rotation cylinder according to claim 2, wherein the anti-rotation hole is located at the axial center of the guide sleeve.

4. The single-shaft rotation stopping cylinder as claimed in claim 3, wherein the limiting structure comprises a limiting groove formed in the inner wall of the cylinder cavity and a protruding point formed on the outer wall of the guide sleeve, the limiting groove is formed along the axial direction of the cylinder body, and the protruding point is embedded in the limiting groove to limit the guide sleeve at the opening of the cylinder cavity of the cylinder body in a clamping manner.

5. The single-shaft rotation stopping cylinder according to claim 3, wherein the limiting structure comprises a limiting groove arranged on the inner wall of the cylinder cavity, a groove arranged on the outer wall of the guide sleeve, and a bolt, the limiting groove is arranged along the axial direction of the cylinder body, and the bolt is inserted between the limiting groove and the groove to limit the guide sleeve at the opening of the cylinder cavity of the cylinder body in a clamping manner.

6. The single-shaft rotation stopping air cylinder as claimed in claim 4 or 5, further comprising a clamp spring, wherein a clamping groove is arranged at the opening of the cylinder cavity, the clamp spring is clamped in the clamping groove, and the clamp spring is located outside the guide sleeve to prevent the guide sleeve from being separated from the cylinder cavity.

7. The single-shaft rotation stopping cylinder as claimed in claim 6, wherein the inner wall of the cylinder cavity is provided with a circle of limiting steps, the guide sleeve is provided with an outer step abutting against the limiting steps, and the guide sleeve is clamped between the clamp spring and the limiting steps.

8. The single-shaft rotation stopping cylinder according to claim 7, further comprising a spring, wherein the spring is sleeved on the square shaft, and two ends of the spring are respectively abutted against the piston and the guide sleeve.

9. The single-shaft anti-rotation cylinder as claimed in claim 8, wherein the cylinder body is provided with an air inlet hole and an air outlet hole communicated with the cylinder cavity, and the air inlet hole and the air outlet hole are symmetrically arranged at two sides of the cavity.

10. The single-shaft anti-rotation cylinder according to claim 9, wherein the guide sleeve is a plastic guide sleeve or a metal guide sleeve.

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