CN215998251U

CN215998251U - Squeeze riveter for punching convex hull

Info

Publication number: CN215998251U
Application number: CN202122540479.6U
Authority: CN
Inventors: 邓凌星; 涂桂根; 史丽
Original assignee: Shenzhen Yipeng Machinery Co ltd
Current assignee: Shenzhen Yipeng Machinery Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-03-11
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a squeeze riveter for punching convex hulls, which comprises a frame, a gas-liquid pressure cylinder, an upper die and a lower die; the lower die is arranged on the rack, the gas-liquid pressure cylinder is arranged on the rack above the lower die, the upper die is arranged on an output shaft of the gas-liquid pressure cylinder above the lower die, the lower die is used for positioning a workpiece and matching with the upper die to punch a convex hull on the workpiece, the gas-liquid pressure cylinder is used as a power source, and the upper die is used for matching with the lower die to punch the convex hull on the workpiece under the driving of the gas-liquid pressure cylinder; the upper die comprises an upper die sleeve and an upper die rod, the upper die sleeve is connected to an output shaft of the gas-liquid pressure cylinder, the upper die rod is connected to the upper die sleeve above the lower die, a convex finger extends upwards from the top of the lower die, and a concave hole matched with the convex finger for use is formed in the position, corresponding to the convex finger, of the upper die rod. The utility model discloses realize that squeeze riveter dashes convex closure, adapt to multiple work piece, the commonality is strong, has practiced thrift die design production cost, and does not rely on artificial experience, and production efficiency is high, and the uniformity is good.

Description

Squeeze riveter for punching convex hull

Technical Field

The utility model relates to a squeeze riveter technical field especially relates to a squeeze riveter for dashing convex closure.

Background

To some sheet metal component, if directly attack the screw thread on the sheet metal component, can lead to being difficult to attack the screw thread because of the thickness of sheet metal component, even attack the screw thread and also hardly satisfy the demand, consequently, need punch the convex closure on the sheet metal component. At present, the existing convex hull punching mode mainly comprises a manual convex hull punching mode and a die convex hull punching mode, the manual convex hull punching mode depends on the experience of an operator, the efficiency is not high, and the consistency is poor, the die convex hull punching mode is realized by punching a sheet metal part by using a die arranged on a press machine, the die needs to be redesigned and produced aiming at different sheet metal parts, the die cost is high, the universality is poor, and a riveting press capable of punching the convex hull does not exist in the market; on the other hand, the existing pneumatic-hydraulic pressure cylinder of the squeeze riveter adopts the design of a single-section long spring, because the longer the spring is, the smaller the stiffness coefficient of the spring is, namely the elasticity provided by the spring is, the smaller the pressure output by the pneumatic-hydraulic pressure cylinder is, and because the longer the spring is, the more the spring is easy to swing, the worse the stability is, the situation that the pneumatic-hydraulic pressure cylinder is easy to be interfered by the swing of the internal spring in the high-speed operation to cause unstable operation is caused, the operation stability is poor, the processing effect is poor, and a limit structure aiming at an oil storage piston is not arranged in the pneumatic-hydraulic pressure cylinder, so that the oil storage piston is easy to be out of position in the long-term high-speed operation, namely the stroke of the oil storage piston cannot be controlled, the normal operation of the pneumatic-hydraulic pressure cylinder is interfered, and the adverse effect on the processing is possibly caused. Therefore, it is necessary to provide a squeeze riveter capable of punching convex hulls to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art, provide a squeeze riveter for dashing convex closure.

The technical scheme of the utility model as follows:

a squeeze riveter for punching convex hulls comprises: the device comprises a frame, a gas-liquid pressure cylinder, an upper die and a lower die; the lower die is arranged on the rack, the gas-liquid pressure cylinder is arranged on the rack above the lower die, the upper die is arranged on an output shaft of the gas-liquid pressure cylinder above the lower die, the lower die is used for positioning and placing a workpiece and matching with the upper die to punch a convex hull on the workpiece, the gas-liquid pressure cylinder is used as a power source, and the upper die is used for matching with the lower die to punch the convex hull on the workpiece under the driving of the gas-liquid pressure cylinder;

the upper die comprises an upper die sleeve and an upper die rod, the upper die sleeve is connected to an output shaft of the gas-liquid pressure cylinder, and the upper die rod is connected to the upper die sleeve above the lower die; and a convex finger extends upwards from the top of the lower die, and a concave hole matched with the convex finger for use is formed in the position, corresponding to the convex finger, of the upper die rod.

Furthermore, a positioning seat is arranged on the frame behind the upper die sleeve, an angle-adjustable positioner is arranged on the positioning seat, and the positioner is used for assisting in positioning a workpiece;

the positioner includes any one of a laser positioner and an infrared positioner.

Further, the gas-liquid pressurization cylinder comprises a first gas-liquid cylinder, a hydraulic cylinder and a second gas-liquid cylinder; one end of the first pneumatic cylinder is arranged on the frame above the convex finger, an output shaft of the first pneumatic cylinder penetrates out of the frame downwards and is connected with the upper die sleeve, the other end of the first pneumatic cylinder is connected with one end of the hydraulic cylinder, and the other end of the hydraulic cylinder is connected with the second pneumatic cylinder; the second pneumatic cylinder comprises a second end cover, a second cylinder barrel, a pressurizing piston, a pressurizing rod, a connector, a first spring, a second spring, a limiter and an oil storage piston; one end of the second cylinder barrel is connected with the second end cover, the other end of the second cylinder barrel is connected with the hydraulic cylinder, the boosting piston can be movably arranged in the second cylinder barrel up and down, and the boosting piston, the second cylinder barrel and the second end cover jointly enclose a boosting air cavity; one end of the pressure increasing rod is connected to the pressure increasing piston, the other end of the pressure increasing rod is arranged in the second cylinder barrel, and the pressure increasing rod moves in the same direction along with the movement of the pressure increasing piston; the connector and the oil storage piston are sequentially arranged on the pressure increasing rod from top to bottom, and the oil storage piston moves in the same direction along with the movement of the pressure increasing rod to play a role in storing oil; the limiter is arranged in the second cylinder barrel below the connector and above the oil storage piston, and stroke control of the oil storage piston is realized through the limiter; one end of the first spring is connected with the pressurizing piston, the other end of the first spring is connected with the connector, and elastic force is provided between the pressurizing piston and the connector; one end of the second spring is connected with the oil storage piston, the other end of the second spring is connected with the connector, and an elastic force is provided between the connector and the oil storage piston.

Further, the first pneumatic cylinder comprises a first end cover, a first cylinder barrel, a fast-forward piston and a piston rod, and the hydraulic cylinder comprises a hydraulic cylinder barrel and an isolator; one end of the isolator is connected with one end of the second cylinder barrel, the other end of the isolator is connected with one end of the hydraulic cylinder barrel, an isolation hole is formed in the position, corresponding to the pressure increasing rod, of the isolator, and the isolation hole is used for enabling the pressure increasing rod to move and supplying hydraulic oil to circulate; one end of the first cylinder barrel is connected with one end of the hydraulic cylinder barrel, the fast forward piston can be movably arranged in the first cylinder barrel up and down, the other end of the first cylinder barrel is connected with one end of the first end cover, the other end of the first end cover is connected to the rack above the protruding finger, the piston rod penetrates through the fast forward piston and moves in the same direction along with the movement of the fast forward piston, one end of the piston rod penetrates through the first cylinder barrel upwards and can be movably arranged in the hydraulic cylinder barrel up and down, and the other end of the piston rod penetrates through the first end cover and the rack downwards in sequence and is connected with the upper die sleeve; the second cylinder barrel, the oil storage piston, the booster rod, the isolator, the hydraulic cylinder barrel and the piston rod jointly enclose a booster liquid cavity, and hydraulic oil is filled in the booster liquid cavity in advance; the hydraulic cylinder barrel, the piston rod, the fast-forward piston and the first cylinder barrel jointly enclose a fast-pressure air cavity, a first air pipe joint and a second air pipe joint are respectively arranged on the hydraulic cylinder barrel, a pressurization air channel is arranged on the second end cover, one end of the first air pipe joint is communicated with an air source, the other end of the first air pipe joint is communicated with the fast-pressure air cavity, one end of the second air pipe joint is communicated with the fast-pressure air cavity, the other end of the second air pipe joint is communicated with the pressurization air channel, and the pressurization air channel is also communicated with the pressurization air cavity; the first cylinder barrel, the fast-forward piston, the piston rod and the first end cover jointly enclose a reset air cavity, a third air pipe connector and a fourth air pipe connector are arranged on the first end cover respectively, one end of the third air pipe connector is communicated with an air source, the other end of the third air pipe connector is communicated with the reset air cavity, one end of the fourth air pipe connector is communicated with the reset air cavity, and the other end of the fourth air pipe connector is communicated with the pressurization air circuit.

Further, the pressurization gas circuit comprises a gas control valve, a first gas pipe and a second gas pipe; the upper part of the pneumatic control valve is provided with a first connector, the pneumatic control valve is connected to the second end cover through the first connector, the second end cover is also provided with a pressurization air passage which is matched with the pressurization air passage and communicated with the pressurization air cavity, and the pneumatic control valve is communicated with the pressurization air passage through the first connector; the lower part of the pneumatic control valve is respectively provided with a second joint and a silencer, one end of the first air pipe is communicated with the second joint, the other end of the first air pipe is communicated with the second air pipe joint, and the silencer is used for exhausting air for the pneumatic control valve; the right side of the pneumatic control valve is provided with a third connector, one end of the second air pipe is communicated with the third connector, and the other end of the second air pipe is communicated with the fourth air pipe connector.

Furthermore, the pressurizing piston is sequentially provided with a first air seal and a second air seal from top to bottom in a sleeved mode, and a sealing effect is achieved through the first air seal and the second air seal.

Furthermore, from last to being equipped with first oil blanket and second oil blanket down in proper order in the hydraulic cylinder, constitute multiple sealed in order to prevent the oil leak through first oil blanket and second oil blanket, just the pressure boost hole has been seted up to the piston rod, the pressure boost hole is used for alleviateing the load of oil blanket.

Furthermore, the hydraulic cylinder barrel is provided with a third air seal, a wear-resistant belt and a fourth air seal from top to bottom below the second oil seal, and the fast-forward piston is sequentially sleeved with a fifth air seal and a sixth air seal from top to bottom.

Furthermore, a seventh air seal matched with the piston rod for use is arranged in the first end cover, and high-pressure air is prevented from permeating downwards from a gap between the piston rod and the first end cover through the seventh air seal, so that a sealing effect is achieved.

By adopting the scheme, the utility model discloses following beneficial effect has:

1. the utility model relates to a, realize the squeeze riveter and dash the convex closure, adapt to multiple work pieces, the commonality is strong, has practiced thrift die design production cost, and does not rely on artificial experience, and production efficiency is high, and the uniformity is good, and the structure is exquisite, is worth the society to widely popularize;

2. according to the design of the gas-liquid pressure cylinder in the optimized scheme, the provided elasticity is larger, larger pressure can be output, and the time required by resetting is shortened, so that the production period can be shortened to improve the efficiency;

3. the application of the limiter in the optimized scheme realizes the stroke control of the oil storage piston, ensures that the oil storage piston cannot be out of position in long-term high-speed operation, has more stable output and ensures the normal operation of the gas-liquid pressure cylinder;

4. in the preferred scheme, high-pressure gas in the quick-pressure gas cavity is used as a gas source of the pressurization gas cavity, and only one external gas source is needed for realizing the quick pre-pressing action and the stamping action, so that the structure is simplified, and the cost is reduced;

5. in the preferred scheme, the design of arranging a plurality of oil seals in the hydraulic cylinder barrel realizes multiple sealing, can effectively prevent oil leakage, and reduces the load of the oil seal by arranging the pressurizing hole on the piston rod, so that the oil seal is more durable;

6. the application of the positioner in the preferred scheme is convenient for workpiece positioning, and can effectively prevent the workpiece from being out of place.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a three-dimensional structure of the present invention;

FIG. 2 is a front view of the upper mold bar, the workpiece to be processed, and the lower mold of the present invention;

FIG. 3 is a cross-sectional view taken at view A-A of FIG. 2;

FIG. 4 is a front view of the gas-liquid pressurizing cylinder of the present invention;

FIG. 5 is a cross-sectional view taken at view B-B of FIG. 4;

FIG. 6 is a side view of the gas-liquid pressurizing cylinder of the present invention;

fig. 7 is a cross-sectional view at view C-C of fig. 6.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Referring to fig. 1 to 7, the utility model provides a squeeze riveter for punching convex hulls, which comprises a frame 1, a gas-liquid pressure cylinder 2, an upper die 3 and a lower die 4; the lower die 4 is arranged on the frame 1, the gas-liquid pressure cylinder 2 is arranged on the frame 1 above the lower die 4, the upper die 3 is arranged on an output shaft of the gas-liquid pressure cylinder 2 above the lower die 4, the lower die 4 is used for positioning and placing a workpiece and matching the upper die 3 to perform convex bag punching operation on the workpiece, the gas-liquid pressure cylinder 2 is used as a power source, the upper die 3 is used for matching the lower die 4 to complete convex bag punching operation on the workpiece under the driving of the gas-liquid pressure cylinder 2, namely, the upper die 3 is used for realizing convex bag punching operation under the matching of the lower die 4 through the action of the gas-liquid pressure cylinder 2; that is to say, in actual production, a workpiece to be machined is positioned and placed on the lower die 4, the upper die 3 descends to tightly press the workpiece on the lower die 4 through the action of the gas-liquid pressure cylinder 2, the rapid prepressing action is completed, the upper die 3 is used for punching the workpiece through the further action of the gas-liquid pressure cylinder 2, the workpiece is punched to form a convex hull under the action of the upper die 3 and the lower die 4, the convex hull punching action is completed, and therefore the convex hull punching operation on the workpiece is completed.

The upper die 3 comprises an upper die sleeve 5 and an upper die rod 6, the upper die sleeve 5 is connected to an output shaft of the gas-liquid pressure cylinder 2, and the upper die rod 6 is connected to the upper die sleeve 5 above the lower die 4; a convex finger 7 extends upwards from the top of the lower die 4, and a concave hole 8 matched with the convex finger 7 is correspondingly formed in the position, corresponding to the convex finger 7, of the upper die rod 6; in actual production, a workpiece to be machined is positioned and placed on the convex finger 7, the upper die rod 6 descends through the action of the gas-liquid pressure cylinder 2 to tightly press the workpiece on the convex finger 7, and the upper die rod 6 is used for punching the workpiece through further action of the liquid pressure cylinder, so that the workpiece is punched to form a convex hull under the action of the convex finger 7 and the concave hole 8, and the convex hull punching operation is completed.

The gas-liquid pressure cylinder 2 comprises a first gas cylinder 9, a hydraulic cylinder 10 and a second gas cylinder 11 which are sequentially connected in series from bottom to top, namely, one end of the first gas cylinder 9 is arranged on the frame 1 above the protruding finger 7, an output shaft of the first gas cylinder 9 penetrates out of the frame 1 downwards and is connected with the upper die sleeve 5, the other end of the first gas cylinder 9 is connected with one end of the hydraulic cylinder 10, and the other end of the hydraulic cylinder 10 is connected with the second gas cylinder 11; the first pneumatic cylinder 9 and the hydraulic cylinder 10 jointly enclose a quick-pressing air cavity, the hydraulic cylinder 10 is provided with a first air pipe joint 12, one end of the first air pipe joint 12 is communicated with an air source, the other end of the first air pipe joint 12 is communicated with the quick-pressing air cavity, high-pressure air provided by the air source during bump punching is input into the quick-pressing air cavity through the first air pipe joint 12, so that an output shaft of the first pneumatic cylinder 9 is pressed downwards, and the quick prepressing action is finished; the hydraulic cylinder 10, the second pneumatic cylinder 11 and the first pneumatic cylinder 9 together enclose a pressurized liquid cavity, and hydraulic oil is filled in the pressurized liquid cavity in advance; the second pneumatic cylinder 11 is surrounded to form a pressurized air cavity, a pressurized air channel is arranged on the second pneumatic cylinder 11, the hydraulic cylinder 10 is further provided with a second air pipe joint 13 above the first air pipe joint 12, one end of the second air pipe joint 13 is communicated with the fast pressurized air cavity, the other end of the second air pipe joint 13 is communicated with the pressurized air channel, the pressurized air channel is further communicated with the pressurized air cavity, after the fast pre-pressing action of the first pneumatic cylinder 9 is completed, the air source cannot enable the output shaft of the first pneumatic cylinder 9 to be pressed downwards continuously, namely, the fast pressurized air cavity reaches an equilibrium state, high-pressure air is continuously provided along with the air source, the high-pressure air in the fast pressurized air cavity is sequentially input into the pressurized air cavity through the second air pipe joint 13 and the pressurized air channel, so that the air pressure in the pressurized air cavity is increased, the second pneumatic cylinder 11 applies a pressure to the pressurized hydraulic cavity, and hydraulic oil in the pressurized hydraulic oil is applied to the first pneumatic cylinder 9, the function of pressurization is achieved, so that the output shaft of the first pneumatic cylinder 9 is further pressed down under the action of an air source and the superposition of pressure exerted by hydraulic oil, and the stamping action is completed, so that the workpiece is subjected to the convex packet stamping operation; the first pneumatic cylinder 9 is surrounded to form a reset air cavity, the first pneumatic cylinder 9 is provided with a third air pipe connector 14 and a fourth air pipe connector 15, one end of the third air pipe connector 14 is communicated with an air source, the other end of the third air pipe connector 14 is communicated with the reset air cavity, high-pressure air provided by the air source during resetting is input into the reset air cavity through the third air pipe connector 14, an output shaft of the first pneumatic cylinder 9 is lifted, so that resetting is completed, one end of the fourth air pipe connector 15 is communicated with the reset air cavity, the other end of the fourth air pipe connector 15 is communicated with the pressurization air path, and when the output shaft of the first pneumatic cylinder is pressed downwards, the high-pressure air in the reset air cavity enters the pressurization air path through the fourth air pipe connector 15;

the first pneumatic cylinder 9 comprises a first end cover 16, a first cylinder 17, a fast forward piston 18 and a piston rod 19, the hydraulic cylinder 10 comprises a hydraulic cylinder 20 and an isolator 21, and the second pneumatic cylinder 11 comprises a second end cover 22, a second cylinder 23, a booster piston 24, a booster rod 25, a connector 26, a first spring 27, a second spring 28, a stopper 29 and an oil storage piston 30; the second cylinder 23 preferably adopts a cylindrical hollow structure, the upper part of the second cylinder 23 is connected with the lower part of the second end cover 22, the second end cover 22 is provided with the pressurization gas path, the second end cover 22 is also provided with a pressurization gas path used in cooperation with the pressurization gas path, one end of the pressurization gas path is communicated with the pressurization gas path, and the other end of the pressurization gas path is communicated with the pressurization gas cavity, so that high-pressure gas input through the pressurization gas path can be conveyed into the pressurization gas cavity through the pressurization gas path; the pressurizing piston 24 is movably arranged in the second cylinder 23 up and down below the second end cover 22, the pressurizing piston 24, the second cylinder 23 and the second end cover 22 together enclose the pressurizing air cavity, in order to avoid air leakage of the pressurizing air cavity, the pressurizing piston 24 is sequentially sleeved with a first air seal 31 and a second air seal 32 from top to bottom, and the first air seal 31 and the second air seal 32 play a role in sealing, so that air leakage of the pressurizing air cavity can be effectively prevented; the upper part of the pressure increasing rod 25 is connected to the pressure increasing piston 24, the lower part of the pressure increasing rod 25 is arranged in the second cylinder 23, and the pressure increasing rod 25 moves in the same direction along with the movement of the pressure increasing piston 24; the connector 26 and the oil storage piston 30 are sequentially arranged on the pressure increasing rod 25 from top to bottom, the lower part of the pressure increasing rod 25 penetrates through the oil storage piston 30 downwards, the oil storage piston 30 moves along with the pressure increasing rod 25 in the same direction, and the oil storage piston 30 plays a role of oil storage and can effectively prevent hydraulic oil in the hydraulic cylinder 10 from permeating upwards; the stopper 29 is arranged in the second cylinder 23 below the connector 26 and above the oil storage piston 30, the stopper 29 is used for limiting the stroke of the oil storage piston 30, the stroke control of the oil storage piston 30 is realized through the stopper 29, the oil storage piston 30 can be effectively prevented from being out of position, the normal work of the gas-liquid pressure cylinder 2 is guaranteed, and particularly, the stopper 29 is preferably a snap spring; one end of the first spring 27 is connected to the pressurizing piston 24, and the other end of the first spring 27 is connected to the connector 26, so that an elastic force is provided between the pressurizing piston 24 and the connector 26; one end of the second spring 28 is connected to the oil storage piston 30, and the other end of the second spring 28 is connected to the connector 26, so as to provide an elastic force between the connector 26 and the oil storage piston 30; the hydraulic cylinder barrel 20 is preferably of a cylindrical hollow structure, the upper part of the isolator 21 is connected with the lower part of the second cylinder barrel 23, the lower part of the isolator 21 is connected with the upper part of the hydraulic cylinder barrel 20, a through isolating hole is formed in the position, corresponding to the pressure rod 25, of the isolator 21, the isolating hole is used for the movement of the pressure rod 25 and the circulation of hydraulic oil, and particularly, the isolator 21 is preferably a high-low pressure isolating ring and can play a role in isolating high pressure and low pressure; the first cylinder 17 preferably adopts a cylindrical hollow structure, the upper part of the first cylinder 17 is connected with the lower part of the hydraulic cylinder 20, the fast-forward piston 18 can be movably arranged in the first cylinder 17 up and down, one end of the first end cover 16 is connected to the lower part of the first cylinder 17 below the fast-forward piston 18, the other end of the first end cover 16 is connected to the frame 1 above the protruding finger 7, the piston rod 19 is arranged on the fast-forward piston 18 in a penetrating manner, the piston rod 19 moves in the same direction along with the movement of the fast-forward piston 18, the upper part of the piston rod 19 penetrates through the first cylinder 17 up and is movably arranged in the hydraulic cylinder 20 up and down, and the lower part of the piston rod 19 penetrates through the first end cover 16 and the frame 1 down in sequence and is connected with the upper die sleeve 5; the second cylinder 23, the oil storage piston 30, the pressure increasing rod 25, the isolator 21, the hydraulic cylinder 20 and the piston rod 19 together enclose the pressure increasing liquid cavity, in order to avoid oil leakage of the pressure increasing liquid cavity, a first oil seal 33 and a second oil seal 34 are sequentially arranged in the lower part of the hydraulic cylinder 20 from top to bottom, the piston rod 19 is sequentially inserted into the hydraulic cylinder 20, the first oil seal 33, the second oil seal 34, the first cylinder 17, the fast-forward piston 18 and the first end cover 16 from top to bottom during installation, namely, one end of the piston rod 19 sequentially penetrates through the first oil seal 33, the second oil seal 34, the hydraulic cylinder 20, the fast-forward piston 18, the first cylinder 17 and the first end cover 16, when in use, hydraulic oil is prevented from seeping out from a gap between the piston rod 19 and the hydraulic cylinder 20 through the first oil seal 33 and the second oil seal 34, namely, multiple sealing is formed by the first oil seal 33 and the second oil seal 34, the multi-sealing function is achieved, oil leakage is effectively prevented, meanwhile, in order to reduce the load of the first oil seal 33 and the second oil seal 34, a pressurizing hole is formed downwards in the top of the piston rod 19, and the oil sealing effect is good; the hydraulic cylinder 20, the piston rod 19, the fast-forward piston 18 and the first cylinder 17 together enclose the fast-pressure air cavity, the hydraulic cylinder 20 is sequentially provided with the first air pipe joint 12 and the second air pipe joint 13 from top to bottom, in order to avoid air leakage of the fast-pressure air cavity, the hydraulic cylinder 20 is further sequentially provided with a third air seal 35, a wear-resistant belt 36 and a fourth air seal 37 from top to bottom below the second oil seal 34, the fast-forward piston 18 is sequentially sleeved with a fifth air seal 38 and a sixth air seal 39 from top to bottom, when in use, high-pressure air is prevented from upwards leaking from a gap between the piston rod 19 and the hydraulic cylinder 20 through the third air seal 35 and the fourth air seal 37, and high-pressure air is prevented from downwards leaking from a gap between the fast-forward piston 18 and the first cylinder 17 through the fifth air seal 38 and the sixth air seal 39, so that a sealing effect is achieved; the first cylinder 17, the fast-forward piston 18, the piston rod 19 and the first end cover 16 jointly enclose the reset air cavity, the first end cover 16 is respectively provided with the third air pipe joint 14 and the fourth air pipe joint 15, in order to avoid air leakage of the reset air cavity, a seventh air seal 40 matched with the piston rod 19 is arranged in the first end cover 16, and when the air-tight valve is used, high-pressure air is prevented from leaking downwards from a gap between the piston rod 19 and the first end cover 16 through the seventh air seal 40, so that a sealing effect is achieved, and the air leakage phenomenon is effectively prevented;

the pressurization gas path comprises a gas control valve 41, a first gas pipe 42 and a second gas pipe 43, a first joint 44 is arranged at the upper part of the gas control valve 41, the gas control valve 41 is connected to the second end cover 22 through the first joint 44, the gas control valve 41 is further communicated with the pressurization gas path through the first joint 44, so that the gas control valve 41 can be communicated with a pressurization gas chamber, a second joint 45 and a silencer 46 are respectively arranged at the lower part of the gas control valve 41, one end of the first gas pipe 42 is communicated with the second joint 45, the other end of the first gas pipe 42 is communicated with the second gas pipe joint 13, so that the gas control valve 41 can be communicated with a quick-pressure gas chamber, the silencer 46 is used for supplying gas to the gas control valve 41 for exhausting, a third joint 47 is arranged at the right side of the gas control valve 41, one end of the second gas pipe 43 is communicated with the third joint 47, and the other end of the second gas pipe 43 is communicated with the fourth gas pipe joint 15, so that the pneumatic control valve 41 can communicate with the quick pressure air chamber; that is, when the piston rod 19 needs to move downwards, the air source communicated with the first air pipe joint 12 outputs high-pressure air, the high-pressure air is input into the fast-forward air cavity, the fast-forward piston 18 drives the piston rod 19 to move downwards, the fast-forward piston 18 moves downwards to extrude the high-pressure air in the reset air cavity, the high-pressure air in the reset air cavity is input into the pneumatic control valve 41 through the fourth air pipe joint 15, the second air pipe 43 and the third joint 47, the second joint 45 and the silencer 46 of the pneumatic control valve 41 are closed, the first joint 44 is communicated with the third joint 47, the high-pressure air in the reset air cavity is input into the pressurized air cavity through the fourth air pipe joint 15, the second air pipe 43, the third joint 47, the pneumatic control valve 41, the first joint 44 and the pressurized air passage in sequence as the fast-forward piston 18 continues to move downwards, until the fast pre-pressing action is completed, with the continuous output of high-pressure gas from the gas source communicated with the first gas pipe joint 12, the high-pressure gas in the fast-acting gas chamber is sequentially input into the pneumatic control valve 41 through the second gas pipe joint 13, the first gas pipe 42 and the second joint 45, so that the silencer 46 and the third joint 47 of the pneumatic control valve 41 are closed, the first joint 44 is communicated with the second joint 45, and the high-pressure gas in the fast-acting gas chamber is sequentially input into the pressurizing gas chamber through the second gas pipe joint 13, the first gas pipe 42, the second joint 45, the pneumatic control valve 41, the first joint 44 and the pressurizing gas channel; when the piston rod 19 needs to move upwards for resetting, the gas source communicated with the third gas pipe joint 14 outputs high-pressure gas, the high-pressure gas is input into the resetting gas cavity, the fast-forward piston 18 drives the piston rod 19 to move upwards, the high-pressure gas in the fast-forward gas cavity is extruded due to the upward movement of the fast-forward piston 18, the high-pressure gas in the fast-forward gas cavity is input into the pneumatic control valve 41 through the second gas pipe joint 13, the first gas pipe 42 and the second joint 45, the third joint 47 of the pneumatic control valve 41 is closed, the second joint 45 and the silencer 46 of the pneumatic control valve 41 are opened, the high-pressure gas in the fast-forward gas cavity is discharged through the silencer 46, meanwhile, the pressurizing piston 24 moves upwards for resetting under the elastic force of the first spring 27 and the second spring 28, the high-pressure gas in the pressurizing gas cavity is discharged sequentially through the pressurizing gas channel, the first joint 44, the pneumatic control valve 41 and the silencer 46, and is continuously input into the resetting gas cavity along with the high-pressure gas, the fast forward piston 18 continues to move upward and returns the piston rod 19 until the piston rod 19 returns to the initial position.

A positioning seat 48 is arranged behind the upper die sleeve 5 of the machine frame 1, and a positioner (not shown in the figure) with an adjustable angle is arranged on the positioning seat 48 and used for assisting in positioning a workpiece.

The utility model discloses working process and principle as follows: firstly, positioning and placing a workpiece to be machined on a convex finger 7 of a lower die 4, and preparing for preprocessing; then, starting the gas-liquid pressure cylinder 2 to work, enabling the upper die rod 6 to descend through the action of the gas-liquid pressure cylinder 2 to tightly press the workpiece on the convex finger 7, and enabling the upper die rod 6 to punch the workpiece through the further action of the gas-liquid pressure cylinder, so that the workpiece is punched into a convex hull under the action of the convex finger 7 and the concave hole 8, and thus the convex hull punching operation is completed; after the machining is finished, the upper die rod 6 is driven to reset through the gas-liquid pressure cylinder 2, at the moment, a machined workpiece can be taken away through a manual or external manipulator, and another workpiece is placed for machining; the circulation is carried out, and the batch production can be realized.

Compared with the prior art, the utility model discloses following beneficial effect has:

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A squeeze riveter for punching convex hull, its characterized in that includes: the device comprises a frame, a gas-liquid pressure cylinder, an upper die and a lower die; the lower die is arranged on the rack, the gas-liquid pressure cylinder is arranged on the rack above the lower die, the upper die is arranged on an output shaft of the gas-liquid pressure cylinder above the lower die, the lower die is used for positioning and placing a workpiece and matching with the upper die to punch a convex hull on the workpiece, the gas-liquid pressure cylinder is used as a power source, and the upper die is used for matching with the lower die to punch the convex hull on the workpiece under the driving of the gas-liquid pressure cylinder;

2. The squeeze riveter for punching convex hulls according to claim 1, wherein the frame is provided with a positioning seat behind the upper die sleeve, the positioning seat is provided with an angle-adjustable positioner, and the positioner is used for assisting in positioning a workpiece;

3. The squeeze riveter for punching convex hulls according to claim 1, wherein the gas-liquid pressure cylinder comprises a first gas cylinder, a hydraulic cylinder and a second gas cylinder; one end of the first pneumatic cylinder is arranged on the frame above the convex finger, an output shaft of the first pneumatic cylinder penetrates out of the frame downwards and is connected with the upper die sleeve, the other end of the first pneumatic cylinder is connected with one end of the hydraulic cylinder, and the other end of the hydraulic cylinder is connected with the second pneumatic cylinder; the second pneumatic cylinder comprises a second end cover, a second cylinder barrel, a pressurizing piston, a pressurizing rod, a connector, a first spring, a second spring, a limiter and an oil storage piston; one end of the second cylinder barrel is connected with the second end cover, the other end of the second cylinder barrel is connected with the hydraulic cylinder, the boosting piston can be movably arranged in the second cylinder barrel up and down, and the boosting piston, the second cylinder barrel and the second end cover jointly enclose a boosting air cavity; one end of the pressure increasing rod is connected to the pressure increasing piston, the other end of the pressure increasing rod is arranged in the second cylinder barrel, and the pressure increasing rod moves in the same direction along with the movement of the pressure increasing piston; the connector and the oil storage piston are sequentially arranged on the pressure increasing rod from top to bottom, and the oil storage piston moves in the same direction along with the movement of the pressure increasing rod to play a role in storing oil; the limiter is arranged in the second cylinder barrel below the connector and above the oil storage piston, and stroke control of the oil storage piston is realized through the limiter; one end of the first spring is connected with the pressurizing piston, the other end of the first spring is connected with the connector, and elastic force is provided between the pressurizing piston and the connector; one end of the second spring is connected with the oil storage piston, the other end of the second spring is connected with the connector, and an elastic force is provided between the connector and the oil storage piston.

4. The squeeze riveter for punching convex hulls according to claim 3, wherein the first pneumatic cylinder comprises a first end cover, a first cylinder barrel, a fast-forward piston and a piston rod, and the hydraulic cylinder comprises a hydraulic cylinder barrel and an isolator; one end of the isolator is connected with one end of the second cylinder barrel, the other end of the isolator is connected with one end of the hydraulic cylinder barrel, an isolation hole is formed in the position, corresponding to the pressure increasing rod, of the isolator, and the isolation hole is used for enabling the pressure increasing rod to move and supplying hydraulic oil to circulate; one end of the first cylinder barrel is connected with one end of the hydraulic cylinder barrel, the fast forward piston can be movably arranged in the first cylinder barrel up and down, the other end of the first cylinder barrel is connected with one end of the first end cover, the other end of the first end cover is connected to the rack above the protruding finger, the piston rod penetrates through the fast forward piston and moves in the same direction along with the movement of the fast forward piston, one end of the piston rod penetrates through the first cylinder barrel upwards and can be movably arranged in the hydraulic cylinder barrel up and down, and the other end of the piston rod penetrates through the first end cover and the rack downwards in sequence and is connected with the upper die sleeve; the second cylinder barrel, the oil storage piston, the booster rod, the isolator, the hydraulic cylinder barrel and the piston rod jointly enclose a booster liquid cavity, and hydraulic oil is filled in the booster liquid cavity in advance; the hydraulic cylinder barrel, the piston rod, the fast-forward piston and the first cylinder barrel jointly enclose a fast-pressure air cavity, a first air pipe joint and a second air pipe joint are respectively arranged on the hydraulic cylinder barrel, a pressurization air channel is arranged on the second end cover, one end of the first air pipe joint is communicated with an air source, the other end of the first air pipe joint is communicated with the fast-pressure air cavity, one end of the second air pipe joint is communicated with the fast-pressure air cavity, the other end of the second air pipe joint is communicated with the pressurization air channel, and the pressurization air channel is also communicated with the pressurization air cavity; the first cylinder barrel, the fast-forward piston, the piston rod and the first end cover jointly enclose a reset air cavity, a third air pipe connector and a fourth air pipe connector are arranged on the first end cover respectively, one end of the third air pipe connector is communicated with an air source, the other end of the third air pipe connector is communicated with the reset air cavity, one end of the fourth air pipe connector is communicated with the reset air cavity, and the other end of the fourth air pipe connector is communicated with the pressurization air circuit.

5. The squeeze riveter for punching convex hulls according to claim 4, wherein the pressurizing air path comprises an air control valve, a first air pipe and a second air pipe; the upper part of the pneumatic control valve is provided with a first connector, the pneumatic control valve is connected to the second end cover through the first connector, the second end cover is also provided with a pressurization air passage which is matched with the pressurization air passage and communicated with the pressurization air cavity, and the pneumatic control valve is communicated with the pressurization air passage through the first connector; the lower part of the pneumatic control valve is respectively provided with a second joint and a silencer, one end of the first air pipe is communicated with the second joint, the other end of the first air pipe is communicated with the second air pipe joint, and the silencer is used for exhausting air for the pneumatic control valve; the right side of the pneumatic control valve is provided with a third connector, one end of the second air pipe is communicated with the third connector, and the other end of the second air pipe is communicated with the fourth air pipe connector.

6. The squeeze riveter for punching convex hulls according to claim 3, wherein the pressurizing piston is sequentially sleeved with a first air seal and a second air seal from top to bottom, and the first air seal and the second air seal play a role in sealing.

7. The squeeze riveter for punching convex hulls according to claim 4, wherein a first oil seal and a second oil seal are sequentially arranged in the hydraulic cylinder barrel from top to bottom, multiple sealing is formed by the first oil seal and the second oil seal to prevent oil leakage, the piston rod is provided with a pressurizing hole, and the pressurizing hole is used for reducing the load of the oil seals.

8. The squeeze riveter for punching convex hulls according to claim 7, wherein the hydraulic cylinder barrel is further provided with a third air seal, a wear-resistant belt and a fourth air seal sequentially from top to bottom below the second oil seal, and the fast-forward piston is sleeved with a fifth air seal and a sixth air seal sequentially from top to bottom.

9. The squeeze riveter for punching convex hulls according to claim 4, wherein a seventh air seal is arranged in the first end cover and used in cooperation with the piston rod, and high-pressure air is prevented from seeping downwards from a gap between the piston rod and the first end cover through the seventh air seal to play a role of sealing.