Quick replacement die for bending plates with different thicknesses

Abstract

The utility model relates to a quick-change die for bending plates with different thicknesses, which comprises an upper die handle, an upper die head and a lower die, a pressing plate is arranged at the bottom end of the upper die handle, a bolt hole is arranged on the pressing plate, the upper die head is mounted at the bottom of the pressing plate, and the upper die head is fixedly connected with the pressing plate through a bolt; the lower die comprises a die base, a die cavity is formed in the upper end of the die base and right faces the upper die head, the two sides of the die cavity are each provided with a replaceable supporting base, the two supporting bases are oppositely arranged, the top ends of the sides, facing the center line, of the supporting bases are provided with installation grooves, replaceable round bars are installed in the installation grooves, and the round bars are in sliding connection with the installation grooves. A plurality of groups of ejector rod mechanisms are arranged at the bottom of the mold cavity and between the two supporting seats, and the ejector rod mechanisms are used for ejecting the two supporting seats to the two sides of the mold cavity; the upper die and the lower die corresponding to workpieces with different thicknesses can be rapidly replaced, the labor intensity of operators is remarkably reduced, meanwhile, the bending precision and consistency of the workpieces are effectively guaranteed, and high economical efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a fast-changing die for bending plates with different thicknesses. Background Art

[0002] In recent years, bending machines have been developing bending forming machines with different plate thicknesses, that is, the bent plates have different thicknesses. If you want to achieve a uniform bending radius and angle for workpieces with different plate thicknesses, you need to use a matching bending mold when bending. The traditional bending process uses ordinary upper and lower molds, usually based on the maximum plate thickness. When switching to thin workpieces, the thickness difference is compensated by adding a pad to the workpiece. This processing method has high labor intensity for the operator, low bending accuracy, and it is difficult to ensure the consistency and stability of the bending angle. Summary of the invention

[0003] The purpose of the utility model is to solve the problems existing in the prior art and to provide a quick-change mold for bending plates of different thicknesses.

[0004] The specific scheme of the utility model is: a quick-change mold for bending plates of different thicknesses, comprising an upper mold handle, an upper mold head and a lower mold, a pressure plate is provided at the bottom end of the upper mold handle, a bolt hole is provided on the pressure plate, the upper mold head is installed at the bottom of the pressure plate, and the upper mold head is fixedly connected to the pressure plate by bolts; the lower mold comprises a mold base, a mold cavity is provided at the upper end of the mold base, the mold cavity is directly opposite to the upper mold head, a replaceable support seat is respectively provided on both sides of the mold cavity, the two support seats are arranged oppositely, a mounting groove is provided at the top end of the support seat facing the center line, a replaceable round rod is installed in the mounting groove, the round rod is slidably connected to the mounting groove, and a plurality of groups of ejector rod mechanisms are provided at the bottom of the mold cavity between the two support seats, and the ejector rod mechanisms are used to tighten the two support seats to the two sides of the mold cavity.

[0005] Furthermore, the mounting groove is an arc-shaped groove and matches the corresponding round rod.

[0006] Furthermore, a plurality of gaskets are provided between the support seat and the inner wall of the mold cavity.

[0007] Furthermore, the push rod mechanism includes a screw sleeve, one end of which is provided with a bolt, and one section of the bolt extends into the screw sleeve and is threadedly connected with the screw sleeve.

[0008] Compared with the prior art, the utility model has the following advantages: the corresponding upper and lower molds can be quickly replaced for workpieces with different thicknesses, which effectively solves the problem of cumbersome mold replacement operation and significantly reduces the labor intensity of the operator. At the same time, it effectively ensures the bending accuracy and consistency of the workpiece and has high economy; the structure is compact and the operator is extremely convenient to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1It is a schematic diagram of the structure of the upper die and the lower die of the utility model corresponding to plates of different thicknesses;

[0010] Figure 2 yes Figure 1 Enlarged schematic diagram of the middle V;

[0011] In the figure: 1. upper die handle; 2. pressure plate; 3. bolt; 4. upper die head; 5. workpiece; 6. round rod; 7. support seat; 8. gasket; 9. die seat; 10. screw sleeve; 11. bolt. DETAILED DESCRIPTION

[0012] See also Figure 1-2 The present embodiment is a quick-change mold for bending plates of different thicknesses, comprising an upper mold handle 1, an upper mold head 4 and a lower mold, a pressing plate 2 is provided at the bottom end of the upper mold handle 1, a bolt hole is provided on the pressing plate 2, the upper mold head 4 is mounted on the bottom of the pressing plate 2, and the upper mold head 4 is fixedly connected to the pressing plate 2 by bolts 3; the lower mold comprises a mold base 9, a mold cavity is provided at the upper end of the mold base 9, the mold cavity is directly opposite to the upper mold head 4, a replaceable support seat 7 is provided on each side of the mold cavity, the two support seats 7 are arranged oppositely, a mounting groove is provided at the top end of the support seat 7 facing the center line, a replaceable round rod 6 is installed in the mounting groove, the round rod 6 is slidably connected to the mounting groove, and a plurality of groups of ejector mechanisms are provided at the bottom of the mold cavity between the two support seats 7, and the ejector mechanisms are used to tighten the two support seats 7 to the two sides of the mold cavity.

[0013] Furthermore, the mounting groove is an arc-shaped groove and matches the corresponding round rod 6 .

[0014] Furthermore, a plurality of gaskets 8 are provided between the support seat 7 and the inner wall of the mold cavity.

[0015] Furthermore, the push rod mechanism includes a screw sleeve 10 , one end of which is provided with a bolt 11 , a section of the bolt 11 extends into the screw sleeve 10 and is threadedly connected with the screw sleeve 10 .

[0016] The working principle of the utility model is as follows: according to the workpieces 5 of different thicknesses and different bending lengths, the corresponding upper die head 4 can be quickly replaced. When replacing the upper die head 4, it is only necessary to loosen the bolts 3, remove the original upper die head 4 and install the upper die head 4 that needs to be replaced; at the same time, quickly replace the corresponding round rods 6 and support seats 7, and fix the support seats 7 on both sides through multiple sets of ejector mechanisms; when replacing the support seats 7, first use a wrench to screw the bolts 11 of each ejector mechanism to move the bolts 11 into the screw sleeves 10 to unload the extrusion force on the support seats 7 on both sides. At this time, the support seat 7 can be taken out and placed in the corresponding support seat 7. After placing it, the bolts 11 are screwed in the opposite direction to move the bolts 11 outward, so that the two ends press the support seats 7 on both sides. After replacing the support seat 7, the corresponding round rods 6 are placed in the mounting grooves of the two support seats 7, thus completing the operation of replacing the mold.

[0017] When the bending operation is performed, it is free bending when it is just formed. The upper surface of the workpiece 5 contacts the arc at the bottom end of the upper die head 4, and the lower surface of the workpiece 5 contacts the round rods 6 on both sides of the lower die. When the upper die head 4 continues to press down, the workpiece 5 is bent into shape. By controlling the stroke of the slider of the bending machine, the workpiece 5 is finally bent to the designed size.

Claims

1. A quick-change die for bending plates of different thicknesses, comprising an upper die handle, an upper die head and a lower die, characterized in that: A pressing plate is provided at the bottom end of the upper die handle, and a bolt hole is provided on the pressing plate. The upper die head is installed at the bottom of the pressing plate, and the upper die head is fixedly connected to the pressing plate by bolts; the lower die includes a die base, and a die cavity is provided at the upper end of the die base, and the die cavity is opposite to the upper die head. A replaceable support seat is provided on each side of the die cavity, and the two support seats are arranged opposite to each other. A mounting groove is provided on the top of the support seat facing the center line, and a replaceable round rod is installed in the mounting groove, and the round rod is slidably connected to the mounting groove. A plurality of push rod mechanisms are provided at the bottom of the die cavity between the two support seats, and the push rod mechanisms are used to tighten the two support seats to the two sides of the die cavity.

2. The quick-change mold for bending plates of different thicknesses according to claim 1 is characterized in that: The mounting groove is an arc-shaped groove and matches with the corresponding round rod.

3. The quick-change mold for bending plates of different thicknesses according to claim 1 is characterized by: A plurality of gaskets are arranged between the support seat and the inner wall of the mold cavity.

4. The quick-change mold for bending plates of different thicknesses according to claim 1 is characterized in that: The push rod mechanism comprises a threaded sleeve, one end of which is provided with a bolt, and one section of the bolt extends into the threaded sleeve and is threadedly connected with the threaded sleeve.

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