CN211053198U

CN211053198U - Knife beating cylinder with built-in knife beating and air blowing structure

Info

Publication number: CN211053198U
Application number: CN201921386653.2U
Authority: CN
Inventors: 胡昌乐
Original assignee: Xuancheng Tenio Machinery Co ltd
Current assignee: Xuancheng Tenio Machinery Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-07-21
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a unclamping cylinder with built-in unclamping structure of blowing, including upper end cover, lower extreme cover and cylinder body, the cylinder body sets up between upper end cover and lower extreme cover, the cylinder body includes cylinder and piston dish, and is adjacent be equipped with the disc between the cylinder, the disc all is equipped with the through-hole of constant diameter with the center of piston dish, is provided with the tubulose piston rod of cavity in the through-hole, the lower extreme of piston rod slides and runs through the lower extreme cover and extend to the lower extreme cover outside, just still be equipped with the side air outlet hole with the cylinder body intercommunication on the lateral wall of piston rod, the hollow tube of piston rod extends to the lower extreme and forms the mouth of blowing, side air outlet hole and the mouth of blowing. The air blowing mechanism and the knife striking cylinder of the utility model share the same air source for pressurization, thereby simplifying the structure of knife striking and air blowing and simplifying the piping; meanwhile, the air flow control device is arranged to accurately control the air flow of the cutter blowing air, so that the practicability of the cutter blowing air structure is improved.

Description

Knife beating cylinder with built-in knife beating and air blowing structure

Technical Field

The utility model belongs to the technical field of the jar of forging a knife, in particular to jar of forging a knife with built-in structure of blowing of forging a knife.

Background

The knife striking cylinder is a boosting conversion device, compressed air acts on a piston to generate thrust to push the piston, and the action of a mechanical device is realized. The unclamping cylinder is mainly used for exchanging tools for a main shaft of a machine tool of a machining center. The unclamping cylinder usually needs to blow air to the connecting end of the cutter shaft when the main shaft is unclamped, so that the cleanness is improved, and the installation of the cutter is facilitated. The traditional gas-liquid knife striking cylinder needs an external blowing structure to blow gas, so that the complexity of the structure is improved, and the production cost is increased; the patent application of publication No. CN204893533U also mentions a blowing structure of a pure pneumatic unclamping cylinder, but the blowing structure and the unclamping cylinder use independent air passages to supply air respectively, and the blowing structure extends out of the top of the unclamping cylinder from the top of a piston rod to be externally connected with an air source, so that the structure is poor in compactness, multiple in air passages and inconvenient in pipe arrangement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem of the existence of above-mentioned prior art, provide the unclamping cylinder that has built-in unclamping structure of blowing.

The utility model discloses a following technical means realizes solving above-mentioned technical problem:

the unclamping cylinder with the built-in unclamping air blowing structure comprises an upper end cover, a lower end cover and a cylinder body, wherein the cylinder body is arranged between the upper end cover and the lower end cover, the cylinder body comprises a cylinder barrel and a piston disc arranged in the cylinder body in a sliding manner, a disc is arranged between the adjacent cylinder barrels, through holes with the same diameter are formed in the centers of the disc and the piston disc, a piston rod is arranged in each through hole, the piston rod is hollow and tubular, the lower end of the piston rod penetrates through the lower end cover in a sliding manner and extends to the outside of the lower end cover, a side air outlet communicated with the cylinder body is further arranged on the side wall of the piston rod, a hollow tube of the piston rod extends to the lower end to form an.

Furthermore, an air volume control device is installed on the lower section of the hollow tube of the piston rod and comprises a throttle valve core, a throttle bolt and an air blowing disc, a throttle hole is formed in the center of the throttle valve core, the air blowing disc is arranged below the throttle valve core, a gap is formed between the top end face of the air blowing disc and the throttle hole of the throttle valve core, a threaded hole is formed in the center of the air blowing disc, the throttle bolt is in threaded connection with the threaded hole to adjust the matching amount of the throttle bolt entering the throttle hole, so that air volume control is achieved, and air holes are formed in the periphery of the threaded hole.

Furthermore, the top matching surface of the throttle bolt and the throttle hole is conical.

Furthermore, the lower end face of the throttling valve core is provided with a supporting leg, the supporting leg is placed on the top face of the air blowing disc to enable a gap to be formed between the throttling hole and the air blowing disc, the air blowing disc is fixedly connected with the inner wall of the hollow pipe of the piston rod, and the throttling valve core is in clearance sliding fit with the inner wall of the hollow pipe of the piston rod.

Furthermore, a sealing ring is arranged on the side wall of the throttling valve core.

Furthermore, the air blowing disc is in threaded connection with the inner wall of the hollow pipe of the piston rod.

Further, the piston rod comprises an upper rod and a lower rod, the upper rod and the lower rod are fixedly connected in a sealing mode, and the air quantity control device is installed at the connecting position of the upper rod and the lower rod.

The utility model has the advantages that: the utility model has the advantages that the air blowing mechanism and the knife striking cylinder are pressurized to share the same air source, the air blowing mechanism is not required to be separately externally connected with the air source, the structural design of knife striking air blowing is simple and practical, the structure of knife striking air blowing is simplified, and the piping is simplified; meanwhile, the air flow control device is arranged to accurately control the air flow of the cutter blowing air, so that the practicability of the cutter blowing air structure is improved.

Drawings

FIG. 1 is a schematic view of the external structure of the unclamping cylinder of the present invention;

FIG. 2 is a schematic view of the internal structure of the unclamping cylinder of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural view (in a top view) of the blowing plate of the present invention;

fig. 5 is a schematic view of the connection between the piston rod and the air volume control device according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Examples

As shown in fig. 1 and 2, the unclamping cylinder with a built-in unclamping air-blowing structure comprises an upper end cover 11, a lower end cover 12 and a plurality of coaxially arranged cylinder bodies 20, wherein the cylinder bodies 20 are axially overlapped and arranged between the upper end cover 11 and the lower end cover 12, the upper end cover 11 and the lower end cover 12 are fixedly connected through a connecting rod 13, so that the upper end cover 11, the lower end cover 12 and the cylinder body 20 are fixed, the cylinder body 20 and the upper end cover 11 are fixedly connected in a sealing manner, and the cylinder body 20 and the lower end cover 12 are also fixedly connected in a sealing manner; the cylinder 20 comprises a cylinder 21 and a piston disc 22 arranged in the cylinder 20 in a sliding way, the piston disc 22 is abutted against the inner side wall of the cylinder 21, and a sealing ring is embedded on the edge of the piston disc 22 for improving the sealing performance; a disc 24 for connection and sealing is arranged between the adjacent cylinder barrels 21, the disc 24 is connected with the cylinder barrel 21 towards one side of the lower end cover 12 in a sealing manner, through holes with the same diameter are formed in the centers of the disc 24 and the piston plate 22, a piston rod 23 is arranged in each through hole, the piston rod 23 is hollow and tubular, the piston rod 23 is fixedly connected with the piston plate 22 in a sealing manner, the piston rod 23 is connected with the disc 24 in a sealing and sliding manner, the upper end of the piston rod 23 is fixedly connected with the piston plate 22 close to the upper end cover 11 in a sealing manner, and the lower end of the piston rod 23 penetrates through the lower end cover 12 in a sliding manner and extends to the; the side wall of the piston rod 23 is further provided with a plurality of side air outlet holes 231, the number of the side air outlet holes 231 is eight times as small as that of the piston disc 22, and the side air outlet holes 231 are located above the joint of the piston disc 22 and the piston rod 23 and below the joint of the circular disc 24 and the piston rod 23; the upper end cover 11 is provided with a push rod air inlet hole, the push rod air inlet hole extends downwards into the cylinder body 20, the lower end cover 12 is provided with a rod returning air inlet hole, and the rod returning air inlet hole extends upwards to the cylinder body 20.

The pneumatic knife striking cylinder is a main working structural component of the pure pneumatic knife striking cylinder, when the pneumatic knife striking cylinder works, high-pressure gas is injected through a push rod air inlet on the upper end cover 11 to generate pressure, and the piston disc 22 can move towards the lower end cover 12 under the action of the air pressure due to the sliding sealing connection of the cylinder barrel 21 and the piston disc 22, so that the piston rod 23 is driven to move towards the lower end cover 12; because the piston rod 23 is of a hollow structure, the gas can overflow through the side gas outlet 231 along the center of the piston rod 23, so that the high-pressure gas enters between the piston disc 22 and the disc 24 below, and the gas pressure is continuously generated to push the piston disc 22 to move towards the lower end cover 12, so that the piston rod 23 is pushed downwards to achieve the purpose of scraping the cutter; after the knife is cut, air is supplied through the rod withdrawing air inlet hole in the lower end cover 12, air enters between the lower end cover 12 and the piston disc 22 through the rod withdrawing air inlet hole, the piston disc 22 and the piston rod 23 are reset by air pressure below, and the air between the piston disc 22 and the disc 24 is discharged through the push rod air inlet hole, so that the next knife cutting can be performed.

As shown in fig. 2 to 4, the hollow tube of the piston rod 23 extends to the lower end to form an air blowing port, the lower section of the hollow tube of the piston rod 23 is provided with an air volume control device, the air quantity control device comprises a throttle valve core 31, a throttle bolt 32 and an air blowing disc 33, wherein the center of the throttle valve core 31 is provided with a throttle hole 311, the air blowing disc 33 is arranged below the throttle valve core 31, and a gap is arranged between the top end surface of the blowing disc 33 and the throttling hole 311 of the throttle valve core 31, the center of the blowing disc 33 is provided with a threaded hole 331, the throttle bolt 32 is in threaded connection with the threaded hole 331 to adjust the matching amount of the throttle bolt 32 entering the throttle hole 311 so as to realize air quantity control, the periphery of the threaded hole 331 is provided with at least one vent hole 332, and at least one vent hole 332 is arranged, in order to ensure the adjusting function of the throttle bolt 32, the total area of the vent holes 332 is larger than the throttle hole 311.

When the knife beating cylinder carries out knife beating, high-pressure gas is introduced into the cylinder body 20, and the high-pressure gas can overflow through the blowing port downwards along the hollow pipe of the piston rod 23 when pushing the piston disc 22, so that the purpose of knife beating blowing is realized. When the high-pressure gas overflows and blows, the high-pressure gas passes through the gas quantity control device, the extending amount of the throttle bolt 32 in the throttle hole 311 is controlled by rotating the throttle bolt 32, the effective gas outlet area of the throttle hole 311 is controlled, the gas quantity blown out from the throttle hole 311 is controlled, and finally the high-pressure gas is blown out through the throttle hole 311 and the vent hole 332; when the throttle bolt 32 rotates downwards, the throttle hole 311 is opened, the air volume is increased, when the throttle bolt 32 rotates upwards, the throttle hole 311 is partially closed, the air volume is reduced, when the throttle bolt 32 rotates upwards to the top, the throttle hole 311 is blocked, the whole throttle hole is closed, the air volume is zero, and the air blowing function is closed.

As shown in fig. 3, the top mating surface of the throttle bolt 32 and the throttle hole 311 is tapered. The taper is big end down, on the one hand, is more convenient for the throttle bolt 32 to stretch into orifice 311 and orifice 311 cooperation regulation, and on the other hand, the volume is adjusted through the volume that control toper top stretched into orifice 311, because the area that the conical fitting surface got into orifice 311 is crescent, makes the regulation control range bigger, control accuracy is higher.

As shown in fig. 3, a supporting leg 312 is disposed on a lower end surface of the throttle valve core 31, the supporting leg 312 is placed on a top surface of the blow plate 33 to form a gap between the throttle hole 311 and the blow plate 33, the blow plate 33 is fixedly connected with an inner wall of the hollow tube of the piston rod 23, and the throttle valve core 31 is in clearance sliding fit with the inner wall of the hollow tube of the piston rod 23. Because it is difficult to ensure that the throttle valve core 31 and the blowing disc 33 are completely coaxial with each other in the actual processing process, after the throttle valve core 31 is in clearance sliding fit with the inner wall of the hollow tube of the piston rod 23, when the throttle bolt 32 is screwed to adjust the air amount upwards, the throttle valve core 31 can be subjected to adaptive fine adjustment, so that the coaxiality of the throttle bolt 32 and the throttle hole 311 is ensured, and the air tightness of adjustment of the throttle bolt 32 is further ensured. In addition, the support leg 312 may be a sealed ring or may be a separate structure similar to a table leg. In order to improve the fit tightness between the throttle valve core 31 and the throttle bolt 32, the throttle valve core 31 is made of forged aluminum section, is light and has certain ductility, and can be improved by deformation

As shown in fig. 3, a sealing ring is disposed on a side wall of the throttle valve body 31 to improve the sealing performance of the throttle valve body 31 and prevent gas from overflowing between the throttle valve body 31 and an inner wall of the piston rod 23, and the sealing ring has elasticity and does not affect the degree of freedom of movement of the throttle valve body 31.

The air blowing disc 33 is in threaded connection with the inner wall of the hollow pipe of the piston rod 23. This facilitates the mounting and dismounting, and the air blowing plate 33 itself does not require sealing performance, so that it is suitable for a screw connection structure.

As shown in fig. 5, the piston rod 23 includes an upper rod and a lower rod, the upper rod and the lower rod are fixedly connected in a sealing manner, and the air quantity control device is installed at the joint of the upper rod and the lower rod. Because the air quantity control device is an independent control component, the number of parts is large, the parts cannot be directly processed in the piston rod 23, the air quantity control device needs to be additionally installed, and the piston rod 23 is designed into a connecting structure of an upper rod and a lower rod, so that the air quantity control device is convenient to install. In this embodiment, the lower rod is sleeved on the lower end of the upper rod, and the air flow control device is installed at the lower end of the upper rod.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The unclamping cylinder with a built-in unclamping air blowing structure comprises an upper end cover (11), a lower end cover (12) and a cylinder body (20), wherein the cylinder body (20) is arranged between the upper end cover (11) and the lower end cover (12), the cylinder body (20) comprises a cylinder barrel (21) and a piston disc (22) which is arranged in the cylinder body (20) in a sliding manner, a disc (24) is arranged between the adjacent cylinder barrels (21), the unclamping cylinder is characterized in that through holes with equal diameters are formed in the centers of the disc (24) and the piston disc (22), a piston rod (23) is arranged in each through hole, the piston rod (23) is in a hollow tubular shape, the lower end of the piston rod (23) penetrates through the lower end cover (12) in a sliding manner and extends to the outside of the lower end cover (12), a side air outlet (231) communicated with the cylinder body (20) is further arranged on the side wall of the piston rod (23), and, the side air outlet (231) and the air blowing port share an air source.

2. The unclamping cylinder with a built-in unclamping and air-blowing structure as claimed in claim 1, the lower section of the hollow pipe of the piston rod (23) is provided with an air volume control device which comprises a throttle valve core (31), a throttle bolt (32) and an air blowing disc (33), a throttle hole (311) is arranged at the center of the throttle valve core (31), the air blowing disc (33) is arranged below the throttle valve core (31), and a gap is arranged between the top end surface of the air blowing disc (33) and the throttle hole (311) of the throttle valve core (31), the center of the air blowing disc (33) is provided with a threaded hole (331), the throttle bolt (32) is in threaded connection with the threaded hole (331) to adjust the matching amount of the throttle bolt (32) entering the throttle hole (311) so as to realize air volume control, and vent holes (332) are formed in the periphery of the threaded hole (331).

3. The unclamping cylinder with a built-in unclamping air-blowing structure according to claim 2, characterized in that the top mating surface of the throttle bolt (32) and the throttle hole (311) is conical.

4. The unclamping cylinder with a built-in unclamping and air-blowing structure according to claim 3, characterized in that the lower end surface of the throttle valve core (31) is provided with a supporting leg (312), the supporting leg (312) is placed on the top surface of the air-blowing disc (33) to form a gap between the throttle hole (311) and the air-blowing disc (33), the air-blowing disc (33) is fixedly connected with the inner wall of the hollow tube of the piston rod (23), and the throttle valve core (31) is in clearance sliding fit with the inner wall of the hollow tube of the piston rod (23).

5. The unclamping cylinder with a built-in unclamping and air-blowing structure according to claim 4, characterized in that a sealing ring is arranged on the side wall of the throttling valve core (31).

6. The unclamping cylinder with the built-in unclamping and air-blowing structure as claimed in any one of claims 2 to 5, characterized in that the air-blowing disc (33) is in threaded connection with the inner wall of the hollow tube of the piston rod (23).

7. The unclamping cylinder with a built-in unclamping and air-blowing structure as claimed in claim 6, characterized in that the piston rod (23) comprises an upper rod and a lower rod, the upper rod and the lower rod are fixedly connected in a sealing manner, and the air quantity control device is installed at the joint of the upper rod and the lower rod.