Stamping automatic double-sheet detection device

Abstract

A double-sheet detection device for stamping automation is used in the technical field of stamping automation. The device is composed of a positioning support, a double-sheet detection sensor, a first nut, a base and a second nut. The first nut and the second nut tighten and fix the double-piece detection sensor on the positioning support, and the stamping automatic double-piece detection device penetrates through a kidney-shaped hole of the base through a bolt to be fixed to a blank holder of a die. The device is simple in structure and low in manufacturing cost, and for parts with thick materials, when the thickness of the materials detected by the double detectors on the sucker of the tooling of the unstacking robot is wrongly judged, two or more stacked materials are mistakenly put into the die cavity, and the parts are prevented from being damaged. The automatic double-sheet detection device for stamping can effectively detect whether the materials are double materials or multiple materials, and the situation that the multiple materials placed in the die cavity damage the die is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping automation, in particular to a stamping automation double-sheet detection device. Background Art

[0002] In the automated production of stamping, in order to prevent the mold from hitting double materials, a double sheet detector will be installed on the end picker suction cup on the destacking robot of the destacking unit at the head end of the production line. This detector uses the principle of electromagnetic induction to send a high-frequency electromagnetic field to the metal material and detect the eddy current changes in the metal material to determine whether there is a double sheet phenomenon. However, in actual applications, it is found that this double sheet detector also has disadvantages. When the material thickness is too large, the effect of this double sheet detector will deteriorate. Sometimes, due to the thickness of the material, when the end picker suction cup sucks two sheets of material, this detector cannot judge it. The automated system will misjudge the material as one sheet and put the material into the mold cavity, but in fact, two or more sheets are put into the mold cavity, which will damage the mold when the equipment is stamping. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model aims to provide an automatic double sheet detection device for stamping, so as to effectively detect whether the material put into the die cavity is double material, so as to avoid damaging the die due to double materials.

[0004] To achieve the above-mentioned purpose of the invention, the utility model of the automatic stamping double-sheet detection device is mainly composed of a positioning bracket, a double-sheet detection sensor, nut one, a base, and nut two; nut one and nut two tighten and fix the double-sheet detection sensor on the positioning bracket.

[0005] Furthermore, the groove at the bottom of the positioning bracket is fixed together with the base by welding; the side of the positioning bracket facing the mold cavity is provided with an inclined surface for guiding the material sheet, and a positioning surface for positioning the material sheet, the positioning surface is located at the lower part of the inclined surface, and the upper end of the positioning surface is connected to the lower end of the inclined surface; the front of the positioning bracket is provided with a hole one, and the positioning surface is provided with a hole two, and the area of ​​the hole two is larger than the end area of ​​the double-sheet detection sensor; the base is provided with a waist-shaped hole.

[0006] Furthermore, the nut 1 is inserted into the hole 1 on the front side of the positioning bracket, the double-sheet detection sensor passes through the nut 1 from the rear side of the positioning bracket, and the nut 2 is screwed in from the rear side of the double-sheet detection sensor to tighten and fix the double-sheet detection sensor on the positioning bracket.

[0007] Furthermore, the distance between the sensing surface of the double sheet detection sensor and the positioning surface is greater than zero, smaller than the sensing distance of the double sheet detection sensor, and does not protrude beyond the positioning surface. The double sheet detection sensor can move up and down inside the positioning bracket according to the thickness of the part material.

[0008] Furthermore, the stamping automation double-sheet detection device is fixed to the blank holder of the mold by bolts passing through the waist-shaped holes of the base; standard part input detection switch 1 and standard part input detection switch 2 are fixed to the blank holder of the mold.

[0009] During automated production, the loading robot grabs the blank and puts it into the mold cavity. When the standard part drop-in detection switch detects that the part is in place, but the double-sheet detection sensor does not sense the blank, the double-sheet detection sensor feeds back a signal to the automation program, which determines that the blank has been put in place and there is only one blank, and controls the mold to start stamping. After stamping is completed, the picking robot takes away the stamped part and waits for the loading robot to put the material again, and a stamping cycle is completed.

[0010] Compared with the prior art, the utility model has a simple structure and a low manufacturing cost. For parts with relatively thick materials, when the double-sheet detector on the suction cup of the picker of the depalletizing robot detects the material thickness and makes an incorrect judgment, two or more stacked materials are mistakenly placed in the mold cavity. The automatic double-sheet detection device for stamping can effectively detect whether the material is double or multiple materials, thereby avoiding damage to the mold due to multiple materials placed in the mold cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a simplified structural diagram of the utility model.

[0012] Figure 2 for Figure 1 Exploded diagram.

[0013] Figure 3 It is a schematic diagram of the working principle of the utility model.

[0014] Figure 4 It is a simplified installation diagram in the practical application of the utility model.

[0015] In the figure: 1. Stamping automatic double-sheet detection device; 2. Positioning bracket; 3. Double-sheet detection sensor; 4. Nut 1; 5. Base; 6. Nut 2; 7. Positioning surface; 8. Hole 1; 9. Sensing surface; 10. Hole 2; 11. Standard part drop-in detection switch 1; 12. Standard part drop-in detection switch 2; 13. Pressure ring; 14. Sheet 1; 15. Sheet 2; 16. Inclined surface; 17. Cavity. DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the utility model of the automatic double-sheet detection device 1 for stamping is mainly composed of a positioning bracket 2, a double-sheet detection sensor 3, a nut 1 4, a base 5, a nut 2 6, etc.; the automatic double-sheet detection device 1 for stamping is fixed to the pressure ring 13 of the mold by bolts passing through the waist-shaped holes of the base 5.

[0017] The groove at the bottom of the positioning bracket 2 is fixed together with the base 5 by welding; the side of the positioning bracket 2 facing the mold cavity 17 is provided with a slope 16 and a positioning surface 7, the slope 16 can be a guide for the material sheet, and the positioning surface 7 can position the material sheet, the positioning surface 7 is located at the lower part of the slope 16, and the upper end of the positioning surface 7 is connected to the lower end of the slope 16; the front of the positioning bracket 2 is provided with a hole 18, and the positioning surface 7 is provided with a hole 2 10, the area of ​​the hole 2 10 is larger than the end area of ​​the double-sheet detection sensor 3, so as not to affect the detection effect of the double-sheet detection sensor 3 on the material sheet, thereby improving the detection accuracy of the double-sheet detection sensor 3.

[0018] Nut 1 4 is inserted into hole 1 8 on the front side of the positioning bracket 2, and the double-sheet detection sensor 3 passes through nut 1 4 from the rear side of the positioning bracket 2. Nut 2 6 is screwed in from the rear side of the double-sheet detection sensor 3 to tighten and fix the double-sheet detection sensor 3 on the positioning bracket 2. The distance between the sensing surface 9 of the double-sheet detection sensor 3 and the positioning surface 7 is greater than zero, less than the sensing distance of the double-sheet detection sensor 3, and does not protrude from the positioning surface 7. The double-sheet detection sensor 3 can move up and down inside the positioning bracket 2 according to the thickness of the part material.

[0019] In actual application, the utility model uses bolts to pass through the waist-shaped holes of the base 5 to fix the stamping automatic double sheet detection device 1 on the blank holder 13. During debugging, the sheet 1 14 and the sheet 2 15 are stacked together and put into the mold cavity, and the double sheet detection sensor 3 is fine-tuned successively so that the distance between the sensing surface 9 of the double sheet detection sensor 3 and the sheet 1 14 is greater than zero and less than the sensing distance of the double sheet detection sensor 3; then the double sheet detection sensor 3 is fine-tuned up and down so that the sensing surface 9 of the double sheet detection sensor 3 can detect the sheet 1 14 but cannot detect the sheet 2 15, and the nut 1 4 and the nut 2 6 are tightened to prevent the double sheet detection sensor 3 from loosening, so that the automation program can determine whether double materials are placed in the mold cavity through the signal fed back by the double sheet detection sensor 3.

[0020] During automated production, the loading robot grabs the blank and puts it into the mold cavity. When the standard part insertion detection switch 11 and the standard part insertion detection switch 2 12 fixed on the mold pressure ring 13 detect that the part is in place, but the double sheet detection sensor 3 does not sense the blank, the double sheet detection sensor 3 feeds back a signal to the automation program, which determines that the blank has been put in place and there is only one blank, and controls the mold to start stamping. After the stamping is completed, the material taking robot takes away the stamped part and waits for the loading robot to put the material again, and a stamping cycle is completed.

[0021] If the double sheet detection sensor 3 senses the sheet after the loading robot grabs the sheet and puts it into the mold cavity, the double sheet detection sensor 3 will feedback a signal to the automation program. The automation program will determine that there is double material in the mold cavity, that is, it will control the mold not to perform stamping, start to alarm, and wait for the operator to confirm and handle it.

Claims

1. A stamping automatic double sheet detection device, characterized in that: The automatic stamping double-sheet detection device (1) comprises a positioning bracket (2), a double-sheet detection sensor (3), a first nut (4), a base (5), and a second nut (6); the first nut (4) and the second nut (6) are used to tighten and fix the double-sheet detection sensor (3) on the positioning bracket (2); The groove at the bottom of the positioning bracket (2) is fixed to the base (5) by welding; the side of the positioning bracket (2) facing the mold cavity (17) is provided with an inclined surface (16) for guiding the material sheet, and a positioning surface (7) for positioning the material sheet, the positioning surface (7) is located at the lower part of the inclined surface (16), and the upper end of the positioning surface (7) is butted with the lower end of the inclined surface (16); the front of the positioning bracket (2) is provided with a hole (8), and the positioning surface (7) is provided with a hole (10), and the area of ​​the hole (10) is larger than the end area of ​​the double-sheet detection sensor (3).

2. The automatic double sheet detection device for stamping according to claim 1, characterized in that: The nut 1 (4) is inserted into the hole 1 (8) on the front side of the positioning bracket (2), the double sheet detection sensor (3) passes through the nut 1 (4) from the rear side of the positioning bracket (2), and the nut 2 (6) is screwed in from the rear side of the double sheet detection sensor (3) to tighten and fix the double sheet detection sensor (3) on the positioning bracket (2).

3. The automatic double sheet detection device for stamping according to claim 1, characterized in that: The distance between the sensing surface (9) of the double sheet detection sensor (3) and the positioning surface (7) is greater than zero and less than the sensing distance of the double sheet detection sensor (3), and does not protrude outside the positioning surface (7). The double sheet detection sensor (3) can move up and down inside the positioning bracket (2) according to the thickness of the part material.

4. The automatic double sheet detection device for stamping according to claim 1, characterized in that: The base (5) is provided with a waist-shaped hole.

5. The automatic double sheet detection device for stamping according to claim 1, characterized in that: The automatic stamping double-sheet detection device (1) is fixed to the blank holder (13) of the mold by means of bolts passing through waist-shaped holes of a base (5); a first standard part input detection switch (11) and a second standard part input detection switch (12) are fixed to the blank holder (13) of the mold.

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