A pneumatic steel stamping machine with three adjustable steel stamping depths and a steel stamping depth control method

Abstract

The present invention discloses a pneumatic steel stamping machine with three adjustable steel stamp depths and a steel stamping depth control method. The pneumatic steel stamping machine includes a pneumatic device and a stamping device, and is characterized in that the pneumatic device includes first to third pneumatic triplet parts, first to fourth electromagnetic reversing valves, and first to third pneumatic one-way valves; the air source is regulated by the pressure reducing valves of the first to third pneumatic triplet parts to obtain compressed air with three different pressures of high, medium and low, respectively, and the three different pressures of compressed air are respectively connected to the air inlets of the first to third electromagnetic reversing valves, and the air outlets of the first to third electromagnetic reversing valves are respectively connected to the air vents of the stamping device through the first to third pneumatic one-way valves; the air inlet of the fourth electromagnetic reversing valve is also connected to the air vent of the stamping device. The present invention has a simple structure and is easy to control, and realizes flexible and adjustable three-level steel stamping depth.

Description

Technical Field

[0001] The invention relates to a steel stamp machine, in particular to a pneumatic steel stamp machine and a steel stamp depth control method. Background Art

[0002] The information of the steel plate needs to be printed on the steel plate, and the depth of the steel stamp is generally required to be between 0.2-0.4mm. If the depth of the steel stamp is too deep, it will affect the performance of the steel plate and may become scrapped. If the depth of the steel stamp is not deep enough, the information may not be clearly visible and cannot be identified after the steel plate is shot blasted. The strength of the steel is different, and the impact force of the steel stamp is the same, and the depth of the steel stamp will be different, so the impact force of the steel stamp needs to vary with the steel type.

[0003] The steel stamping machines currently in use include electromagnetic steel stamping machines and pneumatic steel stamping machines. The electromagnetic steel stamping machine controls the depth of the steel stamp by the size of the electric current. The operating interface has three settings: high, medium and low. Different depths can be selected according to the type of steel. However, the electromagnetic steel stamping machine has a complex structure and high maintenance costs.

[0004] The pneumatic principle diagram of the existing pneumatic steel printing machine is as follows Figure 1 , the air source P is regulated by the pressure reducing valve of the pneumatic triplex 101, and the pressure is adjusted to the required pressure P101. When the left coil of the pneumatic three-position two-way electromagnetic reversing valve 201 is energized, the air source P101 is connected to the A1 port, and the compressed air passes through the upper cover 301 of the stamping device and enters the stamping device cavity 701. The stamping rod 401 overcomes the elastic force of the spring 501 under the action of the compressed air pressure in the upper cavity of the cavity 701 to stamp. After stamping a point, the pneumatic three-position two-way electromagnetic reversing valve 201 loses power, the A1 port is connected to the R1 port, the compressed air in the upper cavity of the cavity 701 is discharged through the R1 port, and the stamping rod 401 moves upward to the static position under the action of the spring 501, and the stamping rod returns to reset.

[0005] The pneumatic steel stamp machine has a simpler structure than the electromagnetic steel stamp machine, but it is difficult to automatically adjust the steel stamp depth as the steel type changes. Summary of the invention

[0006] The purpose of the present invention is to improve a pneumatic steel stamping machine so as to achieve automatic adjustment of the steel stamping depth of the pneumatic steel stamping machine.

[0007] In order to achieve the purpose of the present invention, an embodiment of the present invention first provides a pneumatic steel stamping machine with three adjustable steel stamping depths, including a pneumatic device and a stamping device, wherein the pneumatic device is connected to the stamping device, and is characterized in that the pneumatic device includes a first pneumatic triplet, a second pneumatic triplet, a third pneumatic triplet, a first electromagnetic reversing valve, a second electromagnetic reversing valve, a third electromagnetic reversing valve, a fourth electromagnetic reversing valve, a first pneumatic check valve, a second pneumatic check valve and a third pneumatic check valve; the air source is pressure-regulated by the pressure reducing valves of the first to third pneumatic triplet to obtain compressed air with three different pressures of high, medium and low, respectively, and the compressed air with three different pressures is respectively connected to the air inlets of the first to third electromagnetic reversing valves, and the air outlets of the first to third electromagnetic reversing valves are respectively connected to the air vents of the stamping device through the first to third pneumatic check valves; the air inlet of the fourth electromagnetic reversing valve is also connected to the air vent of the stamping device.

[0008] Preferably, the punching device includes an upper cover, a T-shaped punching rod and a columnar shell, the upper cover is fixed to the upper surface of the columnar shell, and a vent for the punching device is installed on the upper cover; a T-shaped cavity is provided in the columnar shell, and the T-shaped cavity is connected to the outside through the vent; the T-shaped punching rod is slidingly and sealingly connected to the T-shaped cavity; one end of the vertical rod part of the T-shaped punching rod connected to the horizontal rod part is sleeved with a spring, and the other end of the vertical rod part of the T-shaped punching rod extends out of the columnar shell.

[0009] Another embodiment of the present invention provides a method for controlling the stamp depth of the pneumatic stamp press, which is characterized by comprising:

[0010] Step (1) connecting the air source to the first to third pneumatic triplexes;

[0011] Step (ii) Determine the required air compressor gear according to the steel type and steel stamp depth requirements, control the coil of the electromagnetic reversing valve connected to the air compressor of the gear to be energized, and the coils of other electromagnetic reversing valves to be de-energized;

[0012] Step (iii) compressed air enters the stamping device to stamp the steel seal;

[0013] Step (IV) After the stamping is completed, the coils controlling the first to third electromagnetic reversing valves are de-energized, the fourth electromagnetic reversing valve is energized, the compressed air is discharged from the fourth electromagnetic reversing valve, and the stamping device is reset.

[0014] The present invention realizes three-level adjustable pressure of compressed air entering the stamping device by reasonably arranging three pneumatic triplexes, four electromagnetic reversing valves, three pneumatic one-way valves and the connection relationship between them, thereby realizing three-level adjustable depth of steel stamping, with simple structure and easy control. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The pneumatic principle diagram of the existing pneumatic steel printing machine is shown below;

[0016] Figure 2 This is the pneumatic principle diagram of the pneumatic steel printing machine of Example 1. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the examples of the present application will be clearly and completely described below in conjunction with the drawings in the implementation column of the present application. It is obvious that all the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Example

[0018] This embodiment provides a pneumatic steel stamping machine with three adjustable steel stamping depths, including a pneumatic device and a stamping device, wherein the pneumatic device is connected to the stamping device to provide the stamping device with the required compressed air for steel stamping. Figure 2 As shown, the pneumatic device includes three pneumatic triplet components, namely the first pneumatic triplet component 1, the second pneumatic triplet component 2, and the third pneumatic triplet component 3; four two-position three-way solenoid reversing valves, namely the first solenoid reversing valve 4, the second solenoid reversing valve 5, the third solenoid reversing valve 6 and the fourth solenoid reversing valve 15; three pneumatic check valves, namely the first pneumatic check valve 7, the second pneumatic check valve 8, and the third pneumatic check valve 9. The air source P is regulated by the pressure reducing valves of the three sets of pneumatic triplet parts to be adjusted to three different pressures of compressed air P1 (high pressure), P2 (medium pressure), and P3 (low pressure); the three different pressures of compressed air P1, P2, and P3 are respectively connected to the air inlets (P1, P2, and P3 ports) of the first to third electromagnetic reversing valves 4, 5, and 6, and the air outlets A1, A2, and A3 of the first to third electromagnetic reversing valves 4, 5, and 6 are respectively connected to the air vents of the stamping device through the first to third pneumatic one-way valves 7, 8, and 9, so that the compressed air of the pressure required for steel stamping can be provided to the inner cavity of the stamping device by controlling the coil gain and loss of electricity of the first to third electromagnetic reversing valves. The air inlet (R4 port) of the fourth electromagnetic reversing valve 15 is also connected to the air vent of the stamping device, which is used for the return exhaust when the stamping device finishes stamping. According to the steel type and whether the steel plate will be shot blasted later, the high, medium and low printing depths of each steel plate will be calculated and marked in advance, and the high, medium and low depths required to be printed for each steel plate will be uniformly issued to the steel stamp operator along with the steel plate production information in the three-level production system. The operator can manually select high, medium and low gears for printing on the steel stamp machine operation screen according to the three-level system steel stamp depth requirements. The steel stamp machine can also automatically select high, medium and low gears for automatic printing according to the three-level system (if the steel type to be stamped has a higher hardness, the compressed air P1 (high pressure) gear can be used for printing, the steel type with a higher hardness can generally be printed with compressed air P2 (medium gear) for printing, and the steel type with a lower hardness can be printed with compressed air P3 (low gear)).

[0019] The stamping device includes an upper cover 10, a T-shaped stamping rod 11 and a columnar shell 13. The upper cover 10 is fixed to the upper surface of the columnar shell 13 to form a sealing structure. An air vent of the stamping device is installed on the upper cover 10. The columnar shell 13 has a T-shaped cavity 14, and the T-shaped cavity 14 can be connected to the outside through the air vent on the upper cover 10. The T-shaped stamping rod 11 is slidably and sealedly connected to the T-shaped cavity 14. A spring 12 is sleeved on one end of the vertical rod part of the T-shaped stamping rod 11 connected to the horizontal rod part. Under the combined action of the pressure of the compressed air entering the upper cavity of the T-shaped cavity 14 and the elastic force of the spring 12, the T-shaped stamping rod 11 performs piston motion in the T-shaped cavity 14, so that the other end of the vertical rod part of the T-shaped stamping rod 11 can extend out of the columnar shell 13 to perform steel stamping, and retract after the stamping is completed. Example

[0020] This embodiment provides a method for controlling the steel stamp depth of the pneumatic steel stamp press of Embodiment 1, comprising the following steps:

[0021] Step (1) connecting the air source to the first to third pneumatic triplexes;

[0022] Step (ii) Determine the required air compressor gear according to the steel type and steel stamp depth requirements, control the coil of the electromagnetic reversing valve connected to the air compressor of the gear to be energized, and the coils of other electromagnetic reversing valves to be de-energized;

[0023] Step (iii) compressed air enters the stamping device to stamp the steel seal;

[0024] Step (IV) After the stamping is completed, the coils controlling the first to third electromagnetic reversing valves are de-energized, the fourth electromagnetic reversing valve is energized, the compressed air is discharged from the fourth electromagnetic reversing valve, and the stamping device is reset.

[0025] Taking the required compressed air gear position of P1 (high gear) as an example, after the air source P passes through the first pneumatic triplet 1, the compressed air pressure P drops to P1, controlling the coil C1 of the first electromagnetic reversing valve 4 to be energized, while the coils (C2, C3, C4) of the other three electromagnetic reversing valves (5, 6, 15) are not energized, so that the air inlet P1 of the first electromagnetic reversing valve 4 is directly connected to the air outlet A1, and the compressed air P1 passes through the one-way valve 7 (the compressed air can only pass from A1 to B1, not from B1 to A1) to reach the B1 port. Due to the installation of the one-way valves 8 and 9, the fourth electromagnetic valve 15 is not energized and the compressed air is not passed, so the compressed air P1 that enters all enters the upper cavity of the T-shaped cavity 14 of the stamping device, pushing the T-shaped stamping rod 11 to compress the spring 12 to slide downward, completing the stamping action. After the stamping is completed, the coils C1, C2, and C3 controlling the first to third electromagnetic reversing valves 4, 5, and 6 are all powered off, and the coil C4 of the fourth electromagnetic reversing valve 15 is powered on. The compressed air in the upper cavity of the T-shaped cavity 14 is discharged through the fourth electromagnetic reversing valve 15, and the stamping rod 11 retracts under the elastic force of the spring 12 to complete the return stroke reset.

[0026] When the required air compressor gear is medium pressure or low pressure, the control principle is the same as above. The specific electromagnetic reversing valve coil power gain and loss action table is shown in Table 1.

[0027]

[0028] According to the actual process conditions, for Q235 steel plates, the high-end P1 (6MPa) corresponds to a steel stamp depth of 0.4mm; the mid-range P2 (5MPa) corresponds to a steel stamp depth of 0.34mm; and the low-end P2 (4MPa) corresponds to a steel stamp depth of 0.25mm.

[0029] The improved pneumatic steel stamping machine of the present invention can adjust the depth to three gears: high, medium and low. In specific operation, the steel types can be classified first, and high, medium and low gears can be pre-set for printing according to actual steel stamping depth requirements, which greatly improves the flexibility of steel stamping operation.

Claims

1. A pneumatic steel stamping machine with three adjustable steel stamping depths, comprising a pneumatic device and a stamping device, wherein the pneumatic device is connected to the stamping device, and is characterized in that The pneumatic device comprises a first pneumatic triplet (1), a second pneumatic triplet (2), a third pneumatic triplet (3), a first electromagnetic reversing valve (4), a second electromagnetic reversing valve (5), a third electromagnetic reversing valve (6), a fourth electromagnetic reversing valve (15), a first pneumatic check valve (7), a second pneumatic check valve (8) and a third pneumatic check valve (9); the air source is pressure-regulated by the pressure reducing valves of the first to third pneumatic triplet (1, 2, 3) to obtain compressed air of three different pressures, namely, high, medium and low; the compressed air of the three different pressures is respectively connected to the air inlets of the first to third electromagnetic reversing valves (4, 5, 6); the air outlets of the first to third electromagnetic reversing valves (4, 5, 6) are respectively connected to the air vent of the printing device through the first to third pneumatic check valves (7, 8, 9); the air inlet of the fourth electromagnetic reversing valve (15) is also connected to the air vent of the printing device.

2. The pneumatic steel stamping machine with three adjustable steel stamping depths as claimed in claim 1, characterized in that The first to third electromagnetic reversing valves (4, 5, 6) are two-position three-way electromagnetic valves.

3. The pneumatic steel stamping machine with three adjustable steel stamping depths as claimed in claim 1, characterized in that The punching device comprises an upper cover (10), a T-shaped punching rod (11) and a columnar shell (13); the upper cover (10) is fixed to the upper surface of the columnar shell (13); a vent of the punching device is installed on the upper cover (10); a T-shaped cavity (14) is provided in the columnar shell (13); the T-shaped cavity (14) is connected to the outside through the vent; the T-shaped punching rod (11) is connected to the T-shaped cavity (14) in a sliding and sealing manner; one end of the vertical rod part of the T-shaped punching rod (11) connected to the horizontal rod part is sleeved with a spring (12); the other end of the vertical rod part of the T-shaped punching rod (11) extends out of the columnar shell (13).

4. The pneumatic steel stamping machine with three adjustable steel stamping depths as claimed in claim 1, characterized in that For Q235 steel, the three levels of air pressure are 6MPa, 5MPa, and 4MPa, and the corresponding three levels of steel stamp depth are 0.4mm, 0.34mm, and 0.25mm.

5. The method for controlling the steel stamp depth of a pneumatic steel stamp press as claimed in claim 1, characterized in that include: Step (1) connecting the air source to the first to third pneumatic triplexes; Step (ii) Determine the required air compressor gear according to the steel type and steel stamp depth requirements, control the coil of the electromagnetic reversing valve connected to the air compressor of the gear to be energized, and the coils of other electromagnetic reversing valves to be de-energized; Step (iii) compressed air enters the stamping device to stamp the steel seal; Step (IV) After the stamping is completed, the coils controlling the first to third electromagnetic reversing valves are de-energized, the fourth electromagnetic reversing valve is energized, the compressed air is discharged from the fourth electromagnetic reversing valve, and the stamping device is reset.

6. The control method according to claim 5, characterized in that For Q235 steel, the three levels of air pressure are 6MPa, 5MPa, and 4MPa, and the corresponding three levels of steel stamp depth are 0.4mm, 0.34mm, and 0.25mm.

Images