CN202862612U - Table model punching machine driven by pneumatic tendon - Google Patents

Abstract

The embodiment of the utility model discloses a desktop punching machine driven by a pneumatic muscle, which includes a frame and a stamping head that is lifted and slidably arranged at the bottom of the frame. The pneumatic muscle, the wedge connected to the bottom end of the pneumatic muscle and located above the slider, and two sets of connecting rod mechanisms and balance reset parts symmetrically arranged on the side of the wedge, the side of the wedge is from bottom to top The inclined surface in the middle, each link mechanism includes an upper link and a lower link that are hinged to each other, the top end of the upper link and the bottom end of the lower link are respectively hinged on the top of the frame and the stamping head, the upper link and the lower link are respectively hinged. The connecting rod is hinged by a hinge shaft and the hinge shaft is biased to one side of the wedge block and abuts against the inclined surface of the side of the wedge block. It enables smooth and efficient stamping at low cost and is compact and easy to manufacture.

Description

Pneumatic Muscle-powered benchtop press

technical field

The utility model relates to the field of punching equipment, in particular to a desktop punching machine driven by a pneumatic muscle.

Background technique

As a general-purpose pressure processing equipment for cutting, punching, blanking, bending, riveting and forming of small materials, small punching machines are widely used in industry. The commonly used driving methods for small stamping machines are mechanical, hydraulic and pneumatic. Existing pneumatic presses use compressed air as the power source to drive common cylinders or gas-liquid pressurized cylinders to reciprocate to realize stamping action. The high price of the hydraulic pressurized cylinder leads to high manufacturing cost of the punching machine; although there are punching machines driven by pneumatic tendons on the market, the movement of the punching machine is not stable enough.

Utility model content

The technical problem to be solved by the embodiment of the utility model is to provide a desktop punching machine driven by pneumatic muscle, which can realize stable and efficient punching process at low cost, and has a compact structure and is easy to manufacture.

In order to solve the above technical problems, the embodiment of the utility model proposes a pneumatic muscle-driven desktop punching machine, including a frame and a punching head that is lifted and slidably arranged at the bottom of the frame, and the pneumatic muscle-driven desktop punching machine also includes a top The pneumatic muscle fixed on the top of the frame, the wedge connected to the bottom of the pneumatic muscle and located above the slider, and two sets of linkage mechanisms and balance reset parts symmetrically arranged on the side of the wedge, the side of the wedge is A slope inclined from bottom to top to the middle, each link mechanism includes an upper link and a lower link that are hinged to each other, and the top end of the upper link and the bottom end of the lower link are respectively hinged on the top of the machine frame and the stamping head , the upper connecting rod and the lower connecting rod are hinged by a hinge shaft and the hinge shaft is biased to one side of the wedge block and abuts against the slope on the side of the wedge block, and the two ends of the balance reset member are respectively fixed to two sets of linkage mechanisms that are symmetrical to each other superior.

Further, the hinge shafts of the upper link and the lower link are provided with rollers that press against the sides of the wedge.

Further, both ends of the balance reset member are respectively fixed to the middle parts of the lower links of the two sets of link mechanisms.

Further, the balance reset member is a spring.

Further, a spring is respectively provided on the front side and the rear side of the wedge block, and the two springs are arranged symmetrically with respect to the wedge block.

Further, the connecting line between the hinge point of the upper link and the frame and the hinge point of the lower link and the stamping head is parallel to the sliding direction of the stamping head.

Further, the desktop punching machine driven by the pneumatic muscle also includes a pneumatic control circuit for driving the air source of the pneumatic muscle and controlling the air supply of the air source. 3/2-way solenoid valve between the pressure reducing valve and the Fluidic Muscle.

The beneficial effect of the embodiment of the utility model is: the desktop punching machine driven by the pneumatic muscle combines the pneumatic muscle and the connecting rod mechanism, and uses the balance reset part to act on the two sets of connecting rod mechanisms that are symmetrical to each other, and its transmission is stable and efficient. High, compact structure, easy to manufacture and low manufacturing cost.

Description of drawings

Fig. 1 is a schematic structural diagram of a desktop punching machine driven by a pneumatic muscle according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of the pneumatic control circuit of the desktop punching machine driven by the pneumatic muscle according to the embodiment of the present invention.

Detailed ways

Please refer to Fig. 1 to Fig. 2, the desktop punching machine driven by the pneumatic muscle of the utility model embodiment includes a frame 1 and a punching head driving device 2 installed on the frame 1, and the punching head driving device 2 is used to drive The upper die of the stamping die. This embodiment is subject to the direction shown in FIG. 1 .

As shown in FIG. 1 , the frame 1 includes a beam 11 at the top and a workbench 12 at the bottom for fixing the lower mold of the stamping die. The stamping head driving device 2 includes a pneumatic muscle 21, a stamping head 22, a wedge block 23, a link mechanism 24 and a balance reset member 25.

The pneumatic muscle 21 is vertically installed on the frame 1 and is located directly above the stamping head 22 . The upper end of the pneumatic muscle 21 is fixed on the beam 11 , and the lower end is connected and fixed to the upper surface of the wedge 23 . The stamping head 22 is vertically and slidably arranged on the frame 1, and is used to drive the upper mold of the stamping die to carry out stamping movement. The wedge-shaped block 23 is arranged above the stamping head 22 , and its upper end surface is narrower while its lower end surface is wider. The link mechanism 24 includes an upper link 241 and a lower link 242, one end of the upper link 241 is hinged on the crossbeam 11, and the other end is hinged with the lower link 242 by a hinge shaft 243, so that The hinge shaft 243 is biased toward the side of the wedge block 23 and abuts against the slope on the side of the wedge block 23 . The upper end of the lower connecting rod 242 is hinged to the upper connecting rod 241, and the other end is hinged to the upper end surface of the stamping head 22. The upper connecting rod 241 is hinged to the hinge point A on the frame 1 and the lower connecting rod 242 The connecting line between the hinge points B hinged on the stamping head 22 is parallel to the sliding direction of the stamping head. In this embodiment, two sets of link mechanisms 24 are provided to form a double link mechanism, and the two sets of link mechanisms 24 are symmetrical about the center line of the stamping head 22 . The distance between the hinge points B where the two lower connecting rods 242 are hinged on the stamping head 22 is greater than the maximum width of the wedge block 23 . The balance reset member 25 is used to make the hinge shafts 243 of the upper link 241 and the lower link 242 bias to the side of the wedge block 23 and always abut against the slope of the wedge block 23 through the roller 244 . The balance return member 25 of this embodiment adopts a spring, and the two ends of the spring are symmetrically installed and fixed on the middle position of the lower link 242 of the two sets of linkage mechanisms 24 by using the pin shaft 245, and the two ends of the spring are symmetrically arranged, and its production A pre-tightening tension makes the roller 244 always press against the side of the wedge block 23 . In order to balance the force, a spring is respectively provided on the front side and the rear side of the wedge block 23 , and the two springs are arranged symmetrically with respect to the wedge block 2 .

As shown in FIG. 2 , the ram driving device 2 further includes an air source 26 and a pneumatic control circuit 27 for driving the pneumatic muscle 21 . The pneumatic control circuit 27 includes a pressure reducing valve 271 and a two-position three-way solenoid valve 272 located at the output end of the air source 26. The pressure relief valve 271 is connected with the air source 26 for adjusting the control pressure. The solenoid valve 272 is respectively connected with the pressure reducing valve 271 and the pneumatic muscle 21 for adjusting and controlling the working stroke and tension of the pneumatic muscle 21 .

The working principle of the desktop punching machine driven by the pneumatic muscle of this embodiment: when the two-position three-way solenoid valve 272 is activated, compressed air is filled into the pneumatic muscle 21 from the upper end, and the contraction of the pneumatic muscle 21 is controlled to generate pulling force to drive the wedge 23 to move upward. , due to the pre-tightening tension of the balance reset member 25, the roller 244 of the link mechanism 24 is pressed against the slope of the wedge block 23, forcing the roller 244 to slide down along the slope and at the same time to be hinged to the beam 11 around it along with the upper link 241 The upper end rotates, and at the same time drives the lower connecting rod 242 to move downward, and pushes the stamping head 22 to move downward. The contraction force F1 and motion stroke generated by the pneumatic muscle 21 are amplified twice by the inclination angle of the wedge block 23 and the angle effect of the linkage mechanism 24, and then transmitted to the output member, that is, the stamping head 22 of the punching machine. When the compressed air is deflated, the pneumatic muscle 21 will elastically stretch to a relaxed state, and the punch head 22 and the linkage mechanism 24 will return to the initial position under the reset tension of the balance reset member 25 . The contraction force F1 entering the pneumatic muscle 21 is controlled by the pneumatic control circuit 27 by adjusting the pressure reducing valve 271, and the contraction length of the pneumatic muscle 21 can be precisely controlled, thereby controlling the stamping force F0 and the movement stroke of the stamping head 22 of the punching machine. As a new type of driver with strong power, Aeromuscular 21 has the characteristics of large initial tension, precise control of its stroke by using the intake pressure, good high-frequency characteristics, simple structure, and light weight, so it can be used in applications with large output and small space. It has incomparable superiority over ordinary cylinders. The desktop stamping machine driven by the pneumatic muscle is combined with the pneumatic muscle and the connecting rod mechanism, and has the advantages of stable transmission, compact structure, easy manufacture and low manufacturing cost.

Although the embodiments of the present utility model have been shown and described, it should be noted that, under the condition of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. In other words, it can be understood that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principle and spirit of the utility model, and the scope of the utility model is defined by the appended claims and their equivalent scope. the

Claims (7)

1. A desktop punching machine driven by pneumatic muscles, comprising a frame and a stamping head that is lifted and slidably arranged at the bottom of the frame, it is characterized in that, the desktop punching machine driven by pneumatic muscles also includes a pneumatic punch whose top is fixed on the top of the frame The tendon, the wedge connected to the bottom end of the pneumatic muscle and located above the stamping head, and two sets of connecting rod mechanisms symmetrically arranged on the side of the wedge and the balance reset piece, the side of the wedge is from bottom to top to the middle Inclined slope, each link mechanism includes an upper link and a lower link that are hinged to each other. The top end of the upper link and the bottom end of the lower link are respectively hinged on the top of the frame and the stamping head. The rod is hinged by a hinge shaft and the hinge shaft is biased to one side of the wedge block and abuts against the inclined surface of the side of the wedge block. the 2 . The desktop punching machine driven by pneumatic muscle according to claim 1 , wherein the hinge shafts of the upper link and the lower link are provided with rollers that press against the side surfaces of the wedge. 3 . the 3. The desktop punching machine driven by pneumatic muscle according to claim 1, wherein the two ends of the balance reset member are respectively fixed to the middle parts of the lower links of the two sets of linkage mechanisms. the 4. The desktop punching machine driven by Pneumatic Muscle according to claim 1, wherein the balance reset member is a spring. the 5. The desktop punching machine driven by Pneumatic Muscle according to claim 4, wherein a spring is respectively provided on the front side and the rear side of the wedge block, and the two springs are arranged symmetrically with respect to the wedge block. the 6. The desktop punching machine driven by pneumatic muscle as claimed in claim 1, wherein the connection line between the hinge point of the upper link and the frame and the hinge point of the lower link and the stamping head is parallel to that of the stamping head. Swipe direction. the 7. The desktop punching machine driven by the pneumatic muscle according to claim 1, characterized in that, the desktop punching machine driven by the pneumatic muscle also includes an air source for driving the pneumatic muscle and a pneumatic control circuit for controlling the air supply of the gas source, The pneumatic control circuit includes a decompression valve arranged at the output end of the air source and a two-position three-way solenoid valve connected between the decompression valve and the pneumatic muscle. the

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