Low-air-pressure protection device of pneumatic punching machine for automobile part machining

Abstract

The utility model relates to the technical field of pneumatic punching machines, and discloses a low air pressure protection device of a pneumatic punching machine for machining automobile parts, which comprises a base, a fixing frame is fixedly connected to the upper surface of the base, a first air cylinder is fixedly mounted on the surface of the fixing frame, and a punching head is fixedly connected to the movable end of the first air cylinder. A supporting table is slidably connected into the base, limiting openings are formed in the two sides of the supporting table, and a protection assembly is arranged on the base. The protection assembly comprises a mounting groove formed in the upper surface of the base. According to the stamping device, air is supplied into the second air cylinder through the air inlet pipe, so that the limiting block overcomes the pulling force of the second spring to move outwards, the limiting block extends into the limiting opening through movement of the limiting block, the position of the supporting table is locked, enough supporting force is provided for the stamping head during stamping, the limiting opening is in hard connection with the limiting block, and the situation that the limiting block is damaged during stamping is avoided. And the part damage caused by downward pressing of the supporting table is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic punching machines, in particular to a low-pressure protection device of a pneumatic punching machine used for processing automobile parts. Background Art

[0002] The pneumatic punching machine uses the high-pressure gas generated by the compressor to transport the compressed gas to the solenoid valve through a pipeline. The foot switch is used to control the action of the solenoid valve to control the operation and return of the cylinder, thereby achieving the purpose of punching.

[0003] Chinese Patent Announcement No.: CN202021814338.8 discloses a low-pressure protection device for a pneumatic punch press, including a workbench, two side panels are fixedly installed on the top of the workbench, a top panel is fixedly installed on the top of the side panel, a cylinder is fixedly installed on the top of the top panel, and a solenoid valve is fixedly installed on the top of the top panel. The low-pressure protection device of the pneumatic punch press controls the downward pressure of the punch head through the cylinder on the top of the top panel, so that the stamping parts on the support table are stamped and formed, and the operation and return of the cylinder are controlled by the solenoid valve, and the air pressure is detected by the air pressure sensor on the outside of the solenoid valve. When the air pressure is low, the pressure of the punch head is insufficient for stamping and forming. At this time, the air pressure sensor sends a control signal to make the controller in the solenoid valve control the solenoid valve to disconnect, so that the cylinder stops pressing down, thereby protecting the stamping parts from being stamped, and achieving the purpose of good protection.

[0004] In the above technology, although the protection function of low air pressure is achieved, the support force is provided to the support table by the electric push rod, which may easily cause damage to the electric push rod and insufficient support force during stamping. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a low-pressure protection device for a pneumatic punch press for processing automobile parts, aiming to improve the problem of insufficient supporting force of the electric push rod in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a low-pressure protection device for a pneumatic punch press for processing automobile parts, comprising a base, a fixing frame fixedly connected to the upper surface of the base, a first cylinder fixedly installed on the surface of the fixing frame, a punch head fixedly connected to the movable end of the first cylinder, a recovery component arranged on the base, a support platform slidably connected in the base, limited openings are provided on both sides of the support platform, and a protection component is arranged on the base;

[0007] The protection component includes an installation groove opened on the upper surface of the base, a second cylinder is fixedly installed in the installation groove, one end of the second cylinder is slidably connected to a sliding rod, one end of the sliding rod is fixedly connected to a limiting block, and a second spring is fixedly connected between the limiting block and the second cylinder.

[0008] As a further description of the above technical solution:

[0009] The recovery component includes a limit plate fixedly connected to the bottom, a limit hole is provided on the surface of the limit plate, and a first spring is fixedly connected to the bottom of the limit plate.

[0010] As a further description of the above technical solution:

[0011] One end of the first spring is fixedly connected to the upper surface of the bottom plate, and the other end of the first spring is fixedly connected to the lower surface of the limiting plate.

[0012] As a further description of the above technical solution:

[0013] The limiting plate is slidably connected to the surface of the supporting column, and the limiting hole is matched with the supporting column.

[0014] As a further description of the above technical solution:

[0015] A solenoid valve is fixedly connected to one side of the base, an air pressure sensor is connected to the solenoid valve, and an air intake pipe is connected to the surface of the air pressure sensor.

[0016] As a further description of the above technical solution:

[0017] The solenoid valve is connected to the second cylinder via a pipeline, and the first cylinder and the air intake pipe are both connected to the same external air source.

[0018] As a further description of the above technical solution:

[0019] The upper and lower sides of the limit block are both provided with rounded corners, and the limit block is matched with the limit opening.

[0020] As a further description of the above technical solution:

[0021] The base is provided with a sealing cover matching the mounting groove, and the surface of the base is provided with a through groove, which is matched with the supporting platform.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, air is supplied to the second cylinder through the air intake pipe, so that the limit block overcomes the pulling force of the second spring and moves outward. The limit block is extended into the limit opening through the movement of the limit block, and the position of the support table is locked to provide sufficient supporting force for the punch head during punching. The limit opening is hard-connected with the limit block to avoid damage to parts caused by the support table being pressed downward during punching.

[0024] 2. In the utility model, the support platform can be supported and protected by the recovery component, which is convenient for stamping parts, and can also effectively prevent the parts on the support platform from being damaged, thereby improving the protection effect of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of a low-pressure protection device for a pneumatic punch press for processing automobile parts proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the support platform structure of a low-pressure protection device for a pneumatic punch press for processing automobile parts proposed by the utility model;

[0027] Figure 3 This is a schematic structural diagram of a protection component of a low-pressure protection device for a pneumatic punch press for processing automobile parts proposed by the utility model;

[0028] Figure 4 The utility model discloses a structural schematic diagram of a recovery component of a low-pressure protection device of a pneumatic punch press for processing automobile parts.

[0029] Legend:

[0030] 1. Base; 2. Fixed frame; 3. First cylinder; 4. Punching head; 5. Support column; 6. Bottom plate; 7. Limit plate; 701. First spring; 702. Limit hole; 8. Limit block; 801. Mounting groove; 802. Second cylinder; 803. Sliding rod; 804. Second spring; 805. Inlet pipe; 806. Through groove; 807. Solenoid valve; 808. Air pressure sensor; 9. Support platform; 10. Limit opening. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-3The utility model provides an embodiment: a low pressure protection device for a pneumatic punching machine for processing automobile parts, comprising a base 1, a fixing frame 2 is fixedly connected to the upper surface of the base 1, a first cylinder 3 is fixedly installed on the surface of the fixing frame 2, a punching head 4 is fixedly connected to the movable end of the first cylinder 3, a recovery component is arranged on the base 1, a support platform 9 is slidably connected in the base 1, and a limited position opening 10 is provided on both sides of the support platform 9, and a protection component is arranged on the base 1; the protection component comprises a mounting groove 801 provided on the upper surface of the base 1, a second cylinder 802 is fixedly installed in the mounting groove 801, a sliding rod 803 is slidably connected to one end of the second cylinder 802, a limited position block 8 is fixedly connected to one end of the sliding rod 803, and a second spring 804 is fixedly connected between the limited position block 8 and the second cylinder 802. A solenoid valve 807 is fixedly connected to one side of the base 1, a pressure sensor 808 is connected to the solenoid valve 807, and an intake pipe 805 is connected to the surface of the pressure sensor 808. The solenoid valve 807 is connected to the second cylinder 802 through a pipeline, and the first cylinder 3 and the air intake pipe 805 are both connected to the same external air source. The upper and lower sides of the limit block 8 are provided with rounded corners, and the limit block 8 is matched with the limit opening 10. The rounded corners are provided to facilitate the limit block 8 to extend into the limit opening 10. A sealing cover matching the mounting groove 801 is provided on the base 1, and a through groove 806 is provided on the surface of the base 1, and the through groove 806 is matched with the support platform 9. When the air pressure is sufficient, the sliding rod 803 is punched out, thereby driving the limit block 8 to overcome the pulling force of the second spring 804 and move outward, so that the limit block 8 extends into the limit opening 10, completes the locking of the support platform 9, and cooperates with the punch head 4 to punch the parts. When the air pressure is insufficient, the limit block 8 is pulled back by the second spring 804, so that the limit block 8 is unlocked from the limit opening 10. At this time, the support platform 9 can slide up and down along the support column 5 to avoid damage caused by insufficient punching force of parts when the air pressure is insufficient.

[0033] Reference Figure 2-4 The recovery component includes a limit plate 7 fixedly connected to the bottom, a limit hole 702 is provided on the surface of the limit plate 7, and a first spring 701 is fixedly connected to the bottom of the limit plate 7. One end of the first spring 701 is fixedly connected to the upper surface of the bottom plate 6, and the other end of the first spring 701 is fixedly connected to the lower surface of the limit plate 7. The limit plate 7 is slidably connected to the surface of the support column 5, and the limit hole 702 is matched with the support column 5. Under the action of the first spring 701, the support table 9 is flush with the upper surface of the base 1, which is convenient for stamping parts. When the air pressure is insufficient, the support table 9 compresses the first spring 701 under the action of the punch head 4, thereby lowering the position of the support table 9 to prevent the parts on the support table 9 from being damaged.

[0034] Working principle: Place the parts to be punched on the support platform 9, start the first cylinder 3 to drive the punch head 4 to move downward, and punch the parts. When the air pressure is insufficient, the limit block 8 moves toward the second cylinder 802 under the action of the second spring 804, so that the limit block 8 is pulled out from the limit opening 10, so that the limit block 8 and the support platform 9 are unlocked. At this time, when the punch head 4 punches downward, the support platform 9 compresses the first spring 701 and moves downward, thereby avoiding damage to the parts and playing a protective role.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low pressure protection device for a pneumatic punch press for processing automobile parts, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a fixing frame (2), a first cylinder (3) is fixedly mounted on the surface of the fixing frame (2), a punching head (4) is fixedly connected to the movable end of the first cylinder (3), a recovery component is arranged on the base (1), a support platform (9) is slidably connected inside the base (1), limiting openings (10) are provided on both sides of the support platform (9), and a protection component is arranged on the base (1); The protection component comprises a mounting groove (801) provided on the upper surface of the base (1), a second cylinder (802) being fixedly mounted in the mounting groove (801), one end of the second cylinder (802) being slidably connected to a sliding rod (803), one end of the sliding rod (803) being fixedly connected to a limiting block (8), and a second spring (804) being fixedly connected between the limiting block (8) and the second cylinder (802).

2. The low pressure protection device for a pneumatic punch press for processing automobile parts according to claim 1, characterized in that: The recovery component comprises a limit plate (7) fixedly connected to the bottom, a limit hole (702) is provided on the surface of the limit plate (7), and a first spring (701) is fixedly connected to the bottom of the limit plate (7).

3. The low pressure protection device for a pneumatic punch press for processing automobile parts according to claim 2, characterized in that: One end of the first spring (701) is fixedly connected to the upper surface of the bottom plate (6), and the other end of the first spring (701) is fixedly connected to the lower surface of the limiting plate (7).

4. The low pressure protection device for a pneumatic punch press for automobile parts processing according to claim 2 is characterized in that: The limiting plate (7) is slidably connected to the surface of the support column (5), and the limiting hole (702) is matched with the support column (5).

5. The low pressure protection device for a pneumatic punch press for automobile parts processing according to claim 1, characterized in that: A solenoid valve (807) is fixedly connected to one side of the base (1); an air pressure sensor (808) is connected to the solenoid valve (807); and an air intake pipe (805) is connected to the surface of the air pressure sensor (808).

6. The low pressure protection device for a pneumatic punch press for automobile parts processing according to claim 5, characterized in that: The solenoid valve (807) is connected to the second cylinder (802) via a pipeline, and the first cylinder (3) and the air intake pipe (805) are both connected to the same external air source.

7. The low pressure protection device for a pneumatic punch press for automobile parts processing according to claim 1 is characterized in that: The upper and lower sides of the limit block (8) are both provided with rounded corners, and the limit block (8) is matched with the limit opening (10).

8. The low pressure protection device for a pneumatic punch press for processing automobile parts according to claim 1, characterized in that: The base (1) is provided with a sealing cover that matches the mounting groove (801), and a through groove (806) is provided on the surface of the base (1), and the through groove (806) is matched with the support platform (9).

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