Auxiliary feeding device for grading blanking

Abstract

The utility model relates to the technical field of sheet metal part material belt equipment processing, in particular to a progressive blanking auxiliary feeding device, which is characterized in that a lower die holder is arranged below an upper die, a bracket is arranged at the upper end of the lower die holder, the lower end of the upper die is connected with a pressure plate, the lower end of the pressure plate is connected with one end of the bracket, and the left side and the right side of the bracket are respectively connected with a plurality of supporting blocks. One end of a nitrogen spring is arranged below the supporting block, the other end of the nitrogen spring is connected with a lower die base, two blanking grooves are formed in the upper surface of the lower die base, blanking knife edges are arranged at the upper ends of the blanking grooves, a blanking cavity is formed below the blanking grooves, a plurality of blanking sliding grooves are formed in the blanking cavity, and a sliding groove is formed in the side, away from the bracket, of the lower die base. Compared with the prior art, the automatic feeding and blanking functions of the material belt are achieved in a progressive mode, the upper die moves upwards to drive the material belt to be fed, the upper die moves downwards to enable the material belt to make contact with the knife edge, the blanking process is completed, the feeding and blanking functions are achieved at the same time, the process smoothness is guaranteed, meanwhile, the automatic feeding and blanking device can be applied to blanking of the material belts with different widths, and the production efficiency is improved. The production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal material strip equipment processing, in particular to a progressive blanking auxiliary feeding device. Background Art

[0002] In the current progressive blanking production, guide blocks and floating guide columns with guide grooves are often used to assist in feeding the material into the mold. The guide blocks and floating guide columns are used to guide the sheet and lift the material to avoid the blade and feed it forward. However, this production method has many limitations and a narrow scope of application. The feeding is not smooth and is prone to jamming. It is mostly used in blanking production with narrow material strips or blanking with divided knife blocks. However, the overall blanking production effect is not good for materials with longer widths, and it will frequently cause jamming problems. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a progressive blanking auxiliary feeding device, which can effectively solve the problem of material sagging caused by the weight of the material strip itself, solve the problem of material jamming, effectively improve the feeding smoothness, and the device cost is low, and can be widely used in progressive blanking production of various forms and various material strip widths.

[0004] In order to achieve the above purpose, a progressive blanking auxiliary feeding device is designed, including an upper die, a lower die base and a bracket. A lower die base is provided under the upper die, a bracket is provided at the upper end of the lower die base, the lower end of the upper die is connected to a pressure plate, the lower end of the pressure plate is connected to one end of the bracket, and a number of support blocks are connected to the left and right sides of the bracket respectively. One end of a nitrogen spring is provided under the support block, and the other end of the nitrogen spring is connected to the lower die base. Two blanking troughs are provided on the upper surface of the lower die base, a blanking blade is provided at the upper end of the blanking trough, a blanking cavity is provided below the blanking trough, and a number of blanking chutes are provided in the blanking cavity. A chute is provided on the side of the lower die base away from the bracket, and a feed port is provided on the side of the lower die base close to the bracket.

[0005] The bracket is formed by welding rectangular steel and steel pipe.

[0006] Guide blocks are respectively provided on the left and right sides of the bracket.

[0007] A material belt is provided between the bracket and the pressing plate.

[0008] The blanking blade structure is a rectangular thin block, and a blanking opening having the same shape as the blanking trough is provided on the blanking blade.

[0009] Limit blocks are respectively provided on the left and right sides of the blanking blade, and one side of the limit block is connected to the floating material guiding block.

[0010] Compared with the existing technology, the utility model realizes the self-feeding and blanking functions of the material strip in a progressive manner. The material strip is fed by the upward movement of the upper mold, and the material strip is brought into contact with the blade after the upper mold descends to complete the blanking process. It has the functions of feeding and blanking at the same time, ensuring the smoothness of the process. At the same time, it can be applied to blanking of material strips of different widths, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0012] Figure 2 This is an exploded view of the present invention.

[0013] Figure 3 This is a partial enlarged view of the limit block and floating material guide block.

[0014] Figure 4 Schematic diagram of the lower die base structure.

[0015] Figure 5 This is a top view of the lower die base structure.

[0016] Figure 6 It is a side view of the utility model.

[0017] Figure 7 This is a cross-sectional view of the utility model.

[0018] See also Figures 1 to 7 , 1 is rectangular steel, 2 is support block, 3 is nitrogen spring, 4 is upper die, 5 is pressure plate, 6 is guide block, 7 is limit stud, 8 is steel pipe, 9 is blanking blade, 10 is limit block, 11 is floating material guide block, 12 is material belt, 13 is bracket, 14 is lower die base, 15 is blanking trough, 16 is blanking cavity, 17 is blanking chute, 18 is chute, 19 is feed port, 20 is blanking port. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 7As shown, a lower die base 14 is provided below the upper die 4, a bracket 13 is provided on the upper end of the lower die base 14, the lower end of the upper die 4 is connected to the pressing plate 5, the lower end of the pressing plate 5 is connected to one end of the bracket 13, and the left and right sides of the bracket 13 are respectively connected to a number of support blocks 2, and the bracket 13 plays the role of supporting the material strip 12. A nitrogen spring 3 is provided under the support block 2, and the other end of the nitrogen spring 3 is connected to the lower die base 14. The bracket 13 is embedded in one side of the upper surface of the lower die base 14. The nitrogen spring 3 realizes constant pressure and delayed action, and can be used in a flexible manner. After the upper mold 4 is pressed down, two blanking troughs 15 are provided on the upper surface of the lower mold base 14. A blanking blade 9 is provided at the upper end of the blanking trough 15, and a blanking cavity 16 is provided below the blanking trough 15. A number of blanking chutes 17 are provided in the blanking cavity 16. When the material belt 12 contacts the blanking blade 9, the blanking cavity 16 collects the blanking generated after the trimming is completed, and the blanking chute 17 sends the blanking out and collects it. A chute 18 is provided on the side of the lower mold base 14 away from the bracket 13, and a feed port 19 is provided on the side of the lower mold base 14 close to the bracket 13.

[0021] The bracket 13 is formed by welding the rectangular steel 1 and the steel pipe 8 together.

[0022] A guide block 6 is provided on the left and right sides of the bracket 13 respectively, and the guide block 6 guides the material strip to ensure that the material strip is fed into the mold in the correct feeding direction.

[0023] A material strip 12 is provided between the bracket 13 and the pressing plate 5 .

[0024] The blanking blade 9 is a thin rectangular block, and a blanking opening 20 having the same shape as the blanking trough 15 is provided on the blanking blade 9 .

[0025] Limit blocks 10 are respectively provided on the left and right sides of the blanking blade 9 , and one side of the limit block 10 is connected to a floating material guiding block 11 .

[0026] The actual operation process of the present invention is as follows: the material strip 12 is inserted from the feed port 19 to complete the initial feeding. At this time, the material strip 12 is guided by the guide blocks 6 on both sides of the bracket 13 and placed on the bracket 13 in a fixed direction. The material strip 12 is initially clamped by the pressing plate 5 and the bracket 13. In order to eliminate the position difference of the material strips 12 of different sizes during the feeding process, it is necessary to make the upper mold 4 move upward, so that the bracket 13 floats and tilts at a certain angle, so that the material strip 12 leaves the blade and allows the material strip 12 to be fed in at the same time. Because the blanking blade 9 is provided with a limit block 10 and a floating guide block 11, the material strip 12 can be fixed in a fixed position above the blanking blade 9, and then the upper mold 4 is controlled to move downward, and the pressing plate 5 moves downward together, and the pressing plate 5 presses down the bracket 13 and the material strip 12, driving the bracket 13 to move downward to the bottom dead center position, and the material strip 12 contacts the blanking blade 9 to complete the blanking. During the process, due to the arrangement of the pressing plate 5, the bracket 13 and the blanking blade 9, the material strip 12 mainly performs vertical movement up and down, and finally falls from the blanking trough 15 and the blanking port 20 by its own weight, and the blanked material falls into the blanking chute 17 in the blanking cavity 16. A collecting container can be set below the blanking chute 17 to facilitate the collection of the blanked material. The larger blanked material is further processed through the chute 18 on the side of the device. The whole process is particularly suitable for the overall blanking production of materials with a longer width, and can also be used for narrow blanking production. With the help of the straight-up and straight-down upper mold 4 and the bracket 13 mechanism, in conjunction with the blanking blade 9, the weight of the material strip 12 itself is transformed from a negative factor that originally caused the problem of material jamming to a favorable condition for automatically falling into the blanking cavity 16 during blanking, effectively improving the smoothness of feeding and greatly improving production efficiency.

Claims

1. A progressive blanking auxiliary feeding device, comprising an upper die, a lower die base, and a bracket, characterized in that: A lower die base (14) is provided below the upper die (4), a bracket (13) is provided at the upper end of the lower die base (14), the lower end of the upper die (4) is connected to a pressure plate (5), the lower end of the pressure plate (5) is connected to one end of the bracket (13), the left and right sides of the bracket (13) are respectively connected to a plurality of support blocks (2), one end of a nitrogen spring (3) is provided below the support block (2), the other end of the nitrogen spring (3) is connected to the lower die base (14), two blanking grooves (15) are provided on the upper surface of the lower die base (14), a blanking blade (9) is provided at the upper end of the blanking groove (15), a blanking cavity (16) is provided below the blanking groove (15), a plurality of blanking chutes (17) are provided in the blanking cavity (16), a chute (18) is provided on the side of the lower die base (14) away from the bracket (13), and a feed port (19) is provided on the side of the lower die base (14) close to the bracket (13).

2. The step-by-step blanking auxiliary feeding device according to claim 1, characterized in that: The bracket (13) is formed by welding the rectangular steel (1) and the steel pipe (8).

3. The step-by-step blanking auxiliary feeding device according to claim 1, characterized in that: The bracket (13) is provided with guide blocks (6) on the left and right sides respectively.

4. The step-by-step blanking auxiliary feeding device according to claim 1, characterized in that: A material belt (12) is provided between the bracket (13) and the pressing plate (5).

5. The step-by-step blanking auxiliary feeding device according to claim 1, characterized in that: The blanking blade (9) is a thin rectangular block, and a blanking opening (20) having the same shape as the blanking trough (15) is provided on the blanking blade (9).

6. The step-by-step blanking auxiliary feeding device according to claim 1, characterized in that: Limit blocks (10) are respectively provided on the left and right sides of the blanking blade (9), and one side of the limit block (10) is connected to a floating material guide block (11).

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