Stamping die for metal sheet forming and machine tool comprising stamping die

Abstract

The invention discloses a stamping die for metal sheet forming and a machine tool comprising the stamping die, and relates to the technical field of metal sheet machining. Comprising an upper die base and a lower die base, a plurality of guide columns are evenly distributed on the lower die base, a plurality of through holes corresponding to the guide columns are formed in the upper die base, guide sleeves are arranged in the through holes, the guide columns are arranged in the guide sleeves in a sleeved mode and connected with the guide sleeves in a sliding mode, a female die is arranged on the top of the lower die base, a positioning groove is formed in the top of the female die, and a plurality of fixing holes are evenly distributed in the bottom of the positioning groove. A plurality of air channels corresponding to the fixing holes are formed in the female die, and the fixing holes are communicated with an air pump through the air channels. A male die corresponding to the female die is arranged at the bottom of the upper die base, and a die handle is arranged at the top of the upper die base. The air channel communicating with the positioning groove is formed in the bottom of the positioning groove, negative pressure is formed in the air channel through the air pump, adsorption force on the metal sheet is generated, the metal sheet is adsorbed to the bottom of the positioning groove, displacement of the metal sheet during machining is avoided, and the machining quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of metal sheet processing, in particular to a stamping die for metal sheet forming and a machine tool comprising the die. Background Art

[0002] Stamping is a forming method that uses a press and a die to apply external force to plates, strips, tubes and profiles to cause them to undergo plastic deformation or separation, thereby obtaining workpieces of the desired shape and size. It is one of the main methods of metal plastic processing.

[0003] When producing small metal parts, the raw material is often a metal sheet, which is punched by a punching device to produce the small metal parts.

[0004] When processing metal sheets, since the metal sheets are relatively thin and light, they are easily affected by external factors and displaced during processing, resulting in processing misalignment, reducing stamping efficiency and affecting the quality of the finished product. Summary of the invention

[0005] The main purpose of the present invention is to provide a stamping die for metal sheet forming and a machine tool including the die to solve the above problems.

[0006] To achieve the above-mentioned purpose, the present invention provides a stamping die for metal sheet forming, including an upper die base and a lower die base, the lower die base is evenly distributed with a plurality of guide pillars, the upper die base is provided with a plurality of through holes corresponding to the guide pillars, the through holes are provided with guide sleeves, the guide pillar sleeves are arranged in the guide sleeves and are slidably connected with the guide sleeves, the top of the lower die base is provided with a die, the top of the die is provided with a positioning groove, the bottom of the positioning groove is evenly distributed with a plurality of fixing holes, the die is provided with a plurality of air channels corresponding to the fixing holes, and the fixing holes are connected to the air pump through the air channels; the bottom of the upper die base is provided with a punch corresponding to the die, and the top of the upper die base is provided with a die handle.

[0007] Furthermore, the air channel includes a first inclined air channel and a vertical air channel, the first inclined air channel is located at one end of the die and inclined toward the opposite side, and the first inclined air channel and the vertical air channel are connected to different air pumps.

[0008] Furthermore, a discharge trough is provided at one end of the positioning groove away from the first inclined airway, the discharge trough is inclined toward the side away from the positioning groove, the width of the discharge trough is not less than the width of the positioning groove, and the depth of the discharge trough at one end close to the positioning groove is shallower than the depth of the positioning groove.

[0009] Furthermore, a material guiding groove is provided at one end of the positioning groove, and the width of the material guiding groove is the same as that of the positioning groove.

[0010] Furthermore, the depth of the material guiding groove is shallower than that of the positioning groove but deeper than the depth of one end of the material discharging groove close to the positioning groove.

[0011] Furthermore, the die handle is located at the geometric center of the upper die base, and the top of the die handle is connected to the hydraulic device.

[0012] Furthermore, a plurality of positioning pins are provided at the bottom of the lower die base, and the positioning pins are used to ensure the precise positioning of the punch.

[0013] The present invention also provides a punching machine tool, characterized in that it uses the punching die as described above.

[0014] The present invention provides an air channel connected to the positioning groove at the bottom of the positioning groove, and forms negative pressure in the air channel through an air pump to generate an adsorption force on the metal sheet, so that the metal sheet is adsorbed on the bottom of the positioning groove, avoiding displacement of the metal sheet during processing and ensuring the quality of processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is an overall schematic diagram of a stamping die for forming metal sheets according to the present invention.

[0016] Figure 2 The figure is a schematic diagram of a first inclined air channel of a stamping die for forming metal sheets according to the present invention.

[0017] Figure 3 The figure is a schematic diagram of a second inclined air channel of a stamping die for forming metal sheets according to the present invention.

[0018] Among them, 1-upper die base; 2-lower die base; 3-guide column; 4-guide sleeve; 5-die; 51-positioning groove; 52-first inclined air channel; 53-vertical air channel; 54-discharging trough; 55-material guide trough; 56-second inclined air channel; 6-punch; 7-die handle; 8-punch. DETAILED DESCRIPTION

[0019] In order to achieve the above-mentioned purpose and effect, the technical means and structures adopted by the present invention are described in detail with reference to the accompanying drawings for the features and functions of the preferred embodiments of the present invention.

[0020] like Figure 1-3 As shown, the present invention provides a stamping die for metal sheet forming, comprising an upper die base 1 and a lower die base 2, wherein guide pillars 3 are arranged at the four corners of the lower die base 2, and the upper die base 1 is provided with a plurality of through holes corresponding to the guide pillars 3, wherein guide sleeves 4 are arranged in the through holes, and the guide pillars 3 are sleeved in the guide sleeves 4 and slidably connected with the guide sleeves 4, so that the relative accuracy between the upper die base 1 and the lower die base 2 is ensured by the cooperation of the guide pillars 3 and the guide sleeves 4;

[0021] A die 5 is provided at the top of the lower die base 2, a positioning groove 51 is provided at the top of the die 5, a plurality of fixing holes are evenly distributed at the bottom of the positioning groove 51, a plurality of air passages corresponding to the fixing holes are provided in the die 5, and the fixing holes are connected with the air pump through the air passages; a punch 6 corresponding to the die 5 is provided at the bottom of the upper die base 1, and the punch 6 is connected to the upper die base 1 through a positioning pin to ensure the accuracy between the punch 6 and the upper die base 1, and a punch 8 is provided at the bottom of the punch 6; a die handle 7 is provided at the geometric center of the top of the upper die base 1, and the top of the die handle 7 is connected to the hydraulic device to provide power for the movement of the upper die base 1.

[0022] During specific use, the staff first puts the metal sheet to be processed into the positioning groove 51, and then starts the air pump to suck air outward. At this time, negative pressure will be formed in the airway to generate an adsorption force on the outside, and the adsorption force will act on the metal sheet through the fixing hole at the bottom of the positioning groove 51, so as to ensure the firmness of the metal sheet in the positioning groove 51 and ensure the quality of the cost.

[0023] In another embodiment, the air channel includes a first inclined air channel 52 and a vertical air channel 53. The first inclined air channel 52 is located at one end of the die 5 and inclined toward the opposite side. The first inclined air channel 52 is connected to a first air pump, and the vertical air channel 53 is connected to a second air pump.

[0024] Before the stamping work, the first air pump and the second air pump suck air at the same time, and negative pressure is generated in the first inclined air channel 52 and the vertical air channel 53 to adsorb the metal sheet, fix the position of the metal sheet and prevent the metal sheet from warping; when the stamping work is completed, the second air pump stops working, and the vertical air channel 53 no longer produces adsorption. The first air pump stops sucking air and turns to blow air into the first inclined air channel 52. The gas will act on the processed metal sheet after being guided by the first inclined air channel 52. Since the first inclined air channel 52 is inclined toward one side of the positioning groove 51, the gas will give the metal sheet an inclined force to blow the metal sheet away from the positioning groove 51 and leave the positioning groove 51 from one side of the positioning groove 51. There is no need for the staff to manually take the metal sheet out of the positioning groove 51, thereby improving work efficiency.

[0025] In another embodiment, a discharge groove 54 is provided at one end of the positioning groove 51 away from the first inclined air channel 52, that is, in the direction in which the first inclined air channel 52 is inclined. The discharge groove 54 is inclined toward the side away from the positioning groove 51, and the width of the discharge groove 54 is not less than the width of the positioning groove 51. Therefore, after the metal sheet is blown up, the metal sheet will fall into the discharge groove 54 and slide away from the die 5 through the discharge groove 54.

[0026] Specifically, a receiving device may be provided at the lower end of the discharge chute 54 to collect the processed metal sheets. Meanwhile, the depth of the end of the discharge chute 54 close to the positioning groove 51 should be shallower than the depth of the positioning groove 51, thereby preventing the metal sheets from slipping out of the discharge chute 54 before processing.

[0027] In another embodiment, a guide groove 55 is provided at one end of the positioning groove 51, and the width of the guide groove 55 is the same as that of the positioning groove 51. Therefore, the metal sheet can be slid from one end of the guide groove 55 into the positioning groove 51, and the metal sheet can be quickly placed in the positioning groove 51 through the guide groove 55, thereby improving the feeding efficiency and avoiding the metal sheet being misaligned with the positioning groove 51 during feeding, resulting in the edge of the metal sheet pressing on the die 5 to bend the metal sheet. The staff can also connect the guide groove 55 with the feeding device to improve the feeding efficiency.

[0028] Specifically, the air passage further includes a second inclined air passage 56, which is away from the material guide groove 55 and inclined toward the material guide groove 55, and is connected to a third air pump. When the metal sheet slides into the positioning groove 51 through the material guide groove 55, the third air pump can be activated to suck air outward to generate an adsorption force, and then when one end of the metal sheet extends out of the material guide groove 55, the adsorption force generated by the second inclined air passage 56 will act on the metal sheet, so that the metal sheet is quickly in place.

[0029] In another embodiment, the depth of the guide groove 55 is shallower than the positioning groove 51 but deeper than the depth of the end of the discharge groove 54 close to the positioning groove 51. Therefore, after the metal sheet enters the positioning groove 51 through the guide groove 55, the metal sheet will be fixed in the positioning groove 51 and will not leave from the discharge groove 54 and the guide groove 55.

[0030] The present invention also provides a stamping machine tool, comprising the above stamping die.

[0031] The above descriptions are only preferred embodiments of the present invention, not all embodiments. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, belong to the protection scope of the present invention.

Claims

1. A stamping die for forming metal sheets, characterized in that: The invention comprises an upper die base (1) and a lower die base (2), wherein a plurality of guide pillars (3) are evenly distributed on the lower die base (2), a plurality of through holes corresponding to the guide pillars (3) are arranged on the upper die base (1), a guide sleeve (4) is arranged in the through hole, the guide pillar (3) is sleeved in the guide sleeve (4) and is slidably connected with the guide sleeve (4), a concave die (5) is arranged at the top of the lower die base (2), a positioning groove (51) is arranged at the top of the concave die (5), a plurality of fixing holes are evenly distributed at the bottom of the positioning groove (51), a plurality of air channels corresponding to the fixing holes are arranged in the concave die (5), and the fixing holes are connected to the air pump through the air channels; a convex die (6) corresponding to the concave die (5) is arranged at the bottom of the upper die base (1), and a die handle (7) is arranged at the top of the upper die base (1).

2. A stamping die for forming metal sheets as claimed in claim 1, characterized in that: The air channel comprises a first inclined air channel (52) and a vertical air channel (53); the first inclined air channel (52) is located at one end of the die (5) and is inclined toward the opposite side; the first inclined air channel (52) and the vertical air channel (53) are connected to different air pumps.

3. A stamping die for forming metal sheets as claimed in claim 2, characterized in that: A discharge groove (54) is provided at one end of the positioning groove (51) away from the first inclined air channel (52); the discharge groove (54) is inclined toward a side away from the positioning groove (51); the width of the discharge groove (54) is not less than the width of the positioning groove (51); and the depth of one end of the discharge groove (54) close to the positioning groove (51) is shallower than the depth of the positioning groove (51).

4. A stamping die for forming metal sheets as claimed in claim 3, characterized in that: A material guide groove (55) is provided at one end of the positioning groove (51), and the width of the material guide groove (55) is the same as that of the positioning groove (51).

5. A stamping die for forming metal sheets as claimed in claim 4, characterized in that: The depth of the material guiding groove (55) is shallower than that of the positioning groove (51) but deeper than the depth of one end of the material discharging groove (54) close to the positioning groove (51).

6. A stamping die for forming metal sheets according to any one of claims 1 to 5, characterized in that: The die handle (7) is located at the geometric center of the upper die base (1), and the top of the die handle (7) is connected to a hydraulic device.

7. A stamping die for forming metal sheets as claimed in claim 6, characterized in that: A plurality of positioning pins are arranged at the bottom of the lower die seat (2), and the positioning pins are used to ensure the precise positioning of the punch (6).

8. A punching machine tool, characterized in that: A stamping die as described in any one of claims 1 to 7 is installed.

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