Blanking die of press machine for circular tube arc opening

Abstract

The utility model discloses a blanking die of a press machine for an arc opening of a round pipe, and relates to the technical field of round pipe workpiece machining equipment. The outer wall of the upper mold plate is connected with the outer wall of the mold handle in a sliding manner; the female die is located at the bottom end of the upper die plate; the inner wall of the upper die plate is connected with a connecting pin in a rotating mode, the bottom end of the die handle is connected with a fixing pin in a rotating mode, and the inner wall of the upper die plate is connected with a male die fixing plate in a sliding mode. A semicircular notch is punched in one face of the round pipe through the male die, and then the round pipe is rotated by 180 degrees to punch the other face of the round pipe. The die is used for blanking and forming the arc notch of the circular tube, so that the size precision of the notch is ensured, the original manual trimming and cutting process is canceled, the product quality is improved, the labor efficiency is improved, and the field operation environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of round tube workpiece processing equipment, in particular to a round tube arc mouth press punching die. Background Art

[0002] The anti-collision guardrail is a typical cold-formed steel product with the characteristics of good impact resistance, low cost, long life and high safety. It can provide protection during the use of the loader. During the production and installation process of the anti-collision guardrail, it needs to be connected with round tubes.

[0003] However, in the prior art, the welds of the horizontal and vertical round tubes in the loader anti-collision guardrail are poorly formed. The main reason is that the openings of the horizontal and vertical round tubes are complex in shape and cannot be cut by ordinary flame or laser cutting machines. They can only be cut manually or by five-axis cutting machines. The five-axis cutting machine has a high investment cost and a poor input-output ratio. At present, manual marking and flame modification are used. The size after cutting is difficult to guarantee, the gap is uneven after docking with the vertical measurement, and the weld is poor after welding. In addition, the manual cutting process is backward and the labor efficiency is low. Utility Model Content

[0004] In view of the deficiencies of the prior art, the technical solution adopted by the utility model to solve the technical problems is: a round tube arc mouth press blanking die, comprising: a die handle; an upper die plate, the outer wall of the upper die plate is slidably connected to the outer wall of the die handle; a die, the die is located at the bottom end of the upper die plate; the inner wall of the upper die plate is rotatably connected with a connecting pin, the bottom end of the die handle is rotatably connected with a fixing pin, the inner wall of the upper die plate is slidably connected with a punch fixing plate, the two ends of the punch fixing plate are symmetrically provided with sliding grooves, the punch fixing plate is slidably connected to the inner wall of the die through the sliding grooves, and the bottom end of the punch fixing plate is fixedly connected with a punch. Through the sliding grooves provided on the punch fixing plate, the sliding grooves are connected with the clearance of the die, and the sliding grooves mainly play a guiding and positioning role for the die and the punch.

[0005] Preferably, the outer wall of the fixing pin is threadedly connected to the inner wall of the upper template, and four fixing pins are provided, two of which are provided at the left and right ends of the upper template, and the fixing pins at both ends are arranged symmetrically. The fixing pin is rotated to connect with the threaded upper template, so that the mold handle is fixed to the upper template through the fixing pin.

[0006] Preferably, the outer wall of the connecting pin is threadedly connected to the inner wall of the punch fixing plate, and two connecting pins are provided, and the connecting pins are symmetrically arranged at the left and right ends of the upper mold plate. The connecting pin is rotated to connect with the threaded punch fixing plate, so that the upper end of the punch fixing plate is connected to the mold handle through the connecting pin, and the punch and the punch fixing plate are embedded and fixed as a whole.

[0007] Preferably, the inner wall of the die is provided with a positioning circular groove, and the diameter of the positioning circular groove is equal to the diameter of the round tube. The diameter of the positioning circular groove is equal to the diameter of the round tube, and the arc diameter of the positioning circular groove is larger than the diameter of the punch, and the punch is located at the center of the positioning circular groove. The central axis of the positioning circular groove and the central axis of the punch fixing plate are arranged perpendicular to each other. During the blanking operation, the round tube is inserted into the positioning circular groove of the die, the punch is located at the center of the inner diameter of the round tube, and the end face of the round tube is axially positioned through the upper and lower ends of the punch fixing plate. The press is started to move the punch, and the punch punches a semicircular notch on one side of the round tube, and then the round tube is rotated 180 degrees in the positioning circular groove to blank the other side.

[0008] The beneficial effects of the utility model are as follows:

[0009] 1. The utility model can be used in conjunction with a press machine. The circular pipe arc punching tooling has a simple structure, low cost, and saves space. The punching cut is flat and smooth, making the arc punching operation of the circular pipe more convenient and efficient, and the punching quality is better. This is more beneficial to the subsequent processing of circular pipe steel components, easy to weld pipe fittings, and mass production, greatly improving production efficiency.

[0010] 2. The utility model inserts the round tube into the positioning circular groove of the concave die, and the end face of the round tube is axially positioned through the upper and lower ends of the punch fixing plate. The punch punches a semicircular notch on one side of the round tube, and then the round tube is rotated 180 degrees to punch the other side. By punching and forming the arc notch of the round tube with a die, the dimensional accuracy of the notch is guaranteed, the original manual trimming process is eliminated, the quality of the product is improved, the labor efficiency is improved, and the on-site working environment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model;

[0012] Figure 2 It is a top view of the utility model.

[0013] In the figure: 1. mold handle; 2. upper mold plate; 3. punch fixing plate; 4. punch; 5. die; 6. connecting pin; 8. positioning circular groove; 9. fixing pin; 10. sliding groove. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0015] Example:

[0016] See also Figure 1 - Figure 2 The utility model provides a technical solution: a round tube arc mouth press blanking die, comprising: a die handle 1; an upper die plate 2, the outer wall of the upper die plate 2 is slidably connected to the outer wall of the die handle 1; a die 5, the die 5 is located at the bottom end of the upper die plate 2; the inner wall of the upper die plate 2 is rotatably connected with a connecting pin 6, the bottom end of the die handle 1 is rotatably connected with a fixing pin 9, the inner wall of the upper die plate 2 is slidably connected with a punch fixing plate 3, both ends of the punch fixing plate 3 are symmetrically provided with sliding grooves 10, the punch fixing plate 3 is slidably connected to the inner wall of the die 5 through the sliding grooves 10, and the bottom end of the punch fixing plate 3 is fixedly connected with a punch 4. Through the sliding grooves 10 provided on the punch fixing plate 3, the sliding grooves 10 and the die 4 are connected with each other in a clearance fit, and the sliding grooves 10 mainly play a guiding and positioning role for the die 5 and the punch 4, and the axial positioning is realized through the upper and lower ends of the punch fixing plate 3.

[0017] The outer wall of the fixing pin 9 is threadedly connected to the inner wall of the upper mold plate 2. Four fixing pins 9 are provided, two fixing pins 9 are provided at the left and right ends of the upper mold plate 2, and the fixing pins 9 at both ends are arranged symmetrically. The fixing pin 9 is rotated to connect the upper mold plate 2 to which it is threadedly connected, so that the mold handle 1 is fixed to the upper mold plate 2 through the fixing pin 9.

[0018] The outer wall of the connecting pin 6 is threadedly connected to the inner wall of the punch fixing plate 3. Two connecting pins 6 are provided, and the connecting pins 6 are symmetrically arranged at the left and right ends of the upper mold plate 2. By rotating the connecting pin 6, the punch fixing plate 3 connected with the thread is connected, so that the upper end of the punch fixing plate 3 is connected to the mold handle 1 through the connecting pin 6, and the punch 4 is embedded and fixed with the punch fixing plate 3 as a whole.

[0019] The inner wall of the die 5 is provided with a positioning circular groove 8, and the diameter of the positioning circular groove 8 is equal to the diameter of the round tube. The diameter of the positioning circular groove 8 is equal to the diameter of the round tube, and the arc diameter of the positioning circular groove 8 is larger than the diameter of the punch 4, and the punch 4 is located at the center of the positioning circular groove 8. The central axis of the positioning circular groove 8 and the central axis of the punch fixing plate 3 are arranged perpendicular to each other. The round tube is inserted into the positioning circular groove 8 of the die 5, and the punch 4 is located at the center of the inner diameter of the round tube. The end face of the round tube is axially positioned through the upper and lower ends of the punch fixing plate 3. When the press is working, it drives the punch fixing plate 3 to move, so that the punch 4 punches out a semicircular notch on one side of the round tube, and then rotates the round tube 180 degrees, thereby punching out the other side of the round tube.

[0020] Working principle:

[0021] When in use, the die handle 1 is welded and connected to the press, and the fixing pin 9 is rotated to connect the upper die plate 2 with which it is threaded, so that the die handle 1 is fixed on the upper die plate 2 through the fixing pin 9, and then the connecting pin 6 is rotated to connect with the threaded punch fixing plate 3, so that the upper end of the punch fixing plate 3 is connected to the die handle 1 through the connecting pin 6, and the punch 4 is inlaid and fixed to the punch fixing plate 3 as a whole, and the sliding groove 10 provided on the punch fixing plate 3 is used to make the sliding groove 10 and the die 5 to be connected with the clearance, and the sliding groove 10 mainly plays a guiding and positioning role for the die 5 and the punch 4, and the die 5 is provided with a groove for locking with the press base plate, and the die 5 is provided with a positioning circular groove 8 with the same diameter as the round tube, and the punch 5 is located at the center of the positioning circular groove 8;

[0022] The mold is connected to the press through the mold handle 1, the die 5 and the punch 4 are combined through the sliding groove 10 on the punch fixing plate 3, and the die 5 is connected to the press base through the pressing plate. During the blanking operation, the round tube is inserted into the positioning circular groove 8 of the die 5, the punch 4 is located at the center of the inner diameter of the round tube, and the end face of the round tube is axially positioned through the upper and lower ends of the punch fixing plate 3. When the press is working, the punch 4 punches out a semicircular notch on one side of the round tube, and then rotates the round tube 180° to punch the other side. By using the mold to punch and form the arc notch of the round tube, the dimensional accuracy of the notch is guaranteed, the original manual trimming process is eliminated, the quality of the product is improved, the labor efficiency is improved, and the on-site working environment is improved.

[0023] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A round tube arc mouth press punching die, characterized in that: include: Die handle (1); An upper mold plate (2), the outer wall of the upper mold plate (2) being slidably connected to the outer wall of the mold handle (1); A concave mold (5), wherein the concave mold (5) is located at the bottom end of the upper mold plate (2); The inner wall of the upper mold plate (2) is rotatably connected to a connecting pin (6), the bottom end of the mold handle (1) is rotatably connected to a fixing pin (9), the inner wall of the upper mold plate (2) is slidably connected to a punch fixing plate (3), sliding grooves (10) are symmetrically provided at both ends of the punch fixing plate (3), the punch fixing plate (3) is slidably connected to the inner wall of the die (5) via the sliding grooves (10), and the bottom end of the punch fixing plate (3) is fixedly connected to a punch (4).

2. A round tube arc mouth press punching die according to claim 1, characterized in that: The outer wall of the fixing pin (9) is threadedly connected to the inner wall of the upper template (2). Four fixing pins (9) are provided. Two fixing pins (9) are provided at the left and right ends of the upper template (2), respectively, and the fixing pins (9) at the two ends are arranged symmetrically with each other.

3. A round tube arc mouth press punching die according to claim 2, characterized in that: The outer wall of the connecting pin (6) is threadedly connected to the inner wall of the punch fixing plate (3), two connecting pins (6) are provided, and the connecting pins (6) are symmetrically arranged at the left and right ends of the upper mold plate (2).

4. The round tube arc mouth press punching die according to claim 1, characterized in that: The inner wall of the concave mold (5) is provided with a positioning circular groove (8), and the diameter of the positioning circular groove (8) is equal to the diameter of the round tube.

5. The round tube arc mouth press punching die according to claim 4, characterized in that: The diameter of the positioning circular groove (8) is equal to the diameter of the circular tube, the arc diameter of the positioning circular groove (8) is greater than the diameter of the punch (4), and the punch (4) is located at the center of the positioning circular groove (8).

6. A round tube arc mouth press punching die according to claim 5, characterized in that: The central axis of the positioning circular groove (8) and the central axis of the punch fixing plate (3) are arranged perpendicular to each other.

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