A bending machine upper die device

Abstract

The utility model relates to the technical field of upper die device, concretely to a bending machine upper die device, its, solved the problem mentioned in above -mentioned background art, including fixed frame, upper die pressure head, the top and bottom of upper die pressure head all are provided with the compression joint, and two ends have the second limit hole that is linked together, the fixed frame is set up and opens downward to the U type, the lower part of fixed frame both sides all has the first limit hole that is matched with the second limit hole, the second limit hole of upper die pressure head is corresponding with the second limit hole of fixed frame, makes the first limit hole and the second limit hole form the through channel, and the cross section is polygonal and is matched with the first limit hole and the second limit hole in the through channel and inserts the plug rod, both ends of plug rod all have the threaded hole, and have the bolt with threaded hole on the screw thread and connect, are used for when the two compression joints of upper die pressure head alternate each other, to its plug rod is fixed on the fixed frame.

Description

Technical Field

[0001] This utility model relates to the technical field of upper die devices, specifically an upper die device for a bending machine. Background Technology

[0002] A bending machine is a piece of equipment that processes sheet metal. Its main structure includes a machine tool support, a hydraulic drive unit, an upper die fixing bracket, an upper die, a worktable, a lower die, and a lower die fixing bracket. The machine tool uses a hydraulic drive unit to cause the upper and lower dies to extrude and form parts.

[0003] The upper and lower dies used in bending machines are detachable structures, allowing for the replacement of matching dies according to the size and shape requirements of different parts. However, currently, bending machines are limited by the structure of the upper and lower dies, often only able to bend some simple parts. For example, for some special "C"-shaped parts, the presence of four consecutive 90° bends can cause interference with the upper die during bending, making bending impossible.

[0004] A search revealed a Chinese patent (publication number: CN216801354U) that discloses an upper die for a bending machine. The device includes an upper die body with a rectangular clearance cavity in the middle. This cavity avoids interference when bending parts and also reduces the weight of the upper die, making it easier to replace. The four corners of the rectangular clearance cavity in the middle of the upper die body are rounded to prevent stress concentration and cracking while ensuring strength.

[0005] However, the upper mold body in the above device is equipped with an upper mold pressure head at the lower end. In some small factories, due to the simple nature of the parts and the high frequency of use of the bending machine bottom, the upper mold body needs to be replaced frequently for subsequent maintenance, which reduces work efficiency and increases production costs. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this utility model provides an upper die device for a bending machine, which solves the problems mentioned in the background section.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a bending machine upper die device, including a fixed frame and an upper die pressure head. The top and bottom of the upper die pressure head are provided with pressing parts, and the two ends are provided with connected second limiting holes. The fixed frame is U-shaped and the opening faces downward. The lower part of both sides of the fixed frame is provided with first limiting holes that match the second limiting holes. The second limiting holes of the upper die pressure head are aligned with the second limiting holes of the fixed frame, so that the first limiting holes and the second limiting holes form a through channel. A plug rod with a polygonal cross-section that matches the first limiting holes and the second limiting holes is inserted into the through channel. The two ends of the plug rod are provided with threaded holes, and bolts are threaded into the threaded holes for fixing the plug rod on the fixed frame when the two pressing parts of the upper die pressure head alternate.

[0010] Furthermore, both sides of the fixing bracket have grooves that communicate with the first limiting hole for storing bolts.

[0011] Furthermore, a rectangular groove matching the bending machine is opened on one side of the upper part of the fixing frame.

[0012] Furthermore, a boss extends outward from the lower edge of the rectangular groove.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, the present invention provides an upper die device for a bending machine, which has the following advantages:

[0015] The upper die device of this bending machine allows the unworn pressing part of the upper die head to be reused through a simple flipping installation process, effectively extending the overall service life of the upper die head, reducing the frequency of replacing the entire upper die head, thereby reducing equipment procurement costs and downtime costs caused by equipment replacement, improving production efficiency, and increasing economic benefits. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional exploded view of the present invention;

[0018] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 4 This utility model Figure 2 The diagram shows a partially enlarged structural schematic at point A.

[0020] In the diagram: 1. Fixing frame; 2. Upper die pressure head; 3. First limiting hole; 4. Insert rod; 5. Threaded hole; 6. Bolt; 7. Second limiting hole; 8. Groove; 9. Rectangular groove; 10. Boss. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 The present invention relates to an upper die device for a bending machine, comprising a fixed frame 1 and an upper die pressure head 2. The upper die pressure head 2 is provided with pressing parts at its top and bottom. The pressing parts cooperate with the lower die body of the bending machine and are used to press and bend the workpiece.

[0023] The upper mold head has two connected second limiting holes 7 at both ends for subsequent installation on the fixing frame 1.

[0024] The fixing frame 1 is U-shaped with its opening facing downward. A rectangular groove 9 matching the bending machine is opened on one side of the upper part of the fixing frame 1 for installing the fixing frame 1 on the bending machine. A boss 10 extends outward from the lower edge of the rectangular groove 9. The width between the bottom surface of the boss 10 and the fixing frame 1 gradually decreases to ensure the support strength of the boss 10.

[0025] The lower part of both sides of the fixing frame 1 has a first limiting hole 3 that matches the second limiting hole 7. Both sides of the fixing frame 1 have a groove 8 that communicates with the first limiting hole 3, and the groove 8 is located outside the first limiting hole 3.

[0026] Align the second limiting hole 7 of the upper mold head 2 with the second limiting hole 7 of the fixing frame 1, so that the first limiting hole 3 and the second limiting hole 7 form a through channel. Insert a rod 4 that matches the first limiting hole 3 and the second limiting hole 7 into the through channel. The cross-section of the rod 4 is polygonal, and in this embodiment, the outer wall of the rod 4 is hexagonal, so that the first limiting hole 3 and the second limiting hole 7 limit the rod 4 in the rotation direction, so that the upper mold head is limited to rotate in the fixing frame 1. The bottom of the fixing frame 1 has a width that matches the length of the upper mold head to prevent the upper mold head from sliding on the rod 4. After the rod 4 is inserted into the first limiting hole 3, both ends of the rod 4 are respectively placed in the two first limiting holes 3.

[0027] Both ends of the insert rod 4 have threaded holes 5, and bolts 6 placed in the groove 8 are threaded onto the threaded holes 5 for storing the bolts 6 and fixing the insert rod 4 on the fixing bracket 1, thereby fixing the upper mold head 2.

[0028] After the upper mold head is installed on the fixed frame 1, it blocks the opening of the fixed frame 1, thereby forming an opening on the side of the fixed frame 1 so that the "C" workpiece can be bent and processed later.

[0029] In summary, the upper die device of the bending machine is used by installing a fixing frame 1 on the bending machine and placing the rectangular groove 9 of the fixing frame 1 in the bending machine, thereby installing the fixing frame 1.

[0030] Place the upper die pressing head 2 at the opening of the fixed frame 1, and align the first limiting hole 3 with the second limiting hole 7. Then, on one side of the fixed frame 1, insert the insert rod 4 through the groove 8 along the first limiting hole 3 and the second limiting hole 7 until the end of the insert rod 4 enters the first limiting hole 3 on the other side. Use a tool to install bolts 6 in the threaded holes 5 at both ends of the insert rod 4, and place the bolts 6 in the groove 8, thereby completing the installation of the upper die pressing head 2 on the fixed frame 1.

[0031] The upper die pressure head 2 is used in conjunction with the lower die body on the bending machine. When the bending machine is started, the workpiece can be bent.

[0032] When the pressing part on one side of the upper die pressure head 2 is worn and needs to be replaced, use a tool to remove the bolt 6 in the groove 8, then remove the insert rod 4 from the first limiting hole 3 to separate the insert rod 4 from the upper die pressure head 2, reverse the pressing part of the upper die pressure head 2, and install the upper die pressure head 2 on the fixing frame 1 according to the above steps. Thus, the unworn pressing part of the upper die pressure head 2 is placed below and used in conjunction with the lower die body of the bending machine, which reduces the number of times the upper die pressure head 2 needs to be repaired, thereby improving work efficiency and reducing processing costs.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending machine upper die device, comprising a fixed frame (1) and an upper die pressure head (2), characterized in that: The top and bottom of the upper die press head (2) are provided with pressing parts, and the two ends are connected with second limiting holes (7). The fixing frame (1) is U-shaped and the opening is downward. The lower part of both sides of the fixing frame (1) is provided with first limiting holes (3) that match the second limiting holes (7). The second limiting holes (7) of the upper die press head (2) are aligned with the second limiting holes (7) of the fixing frame (1) so that the first limiting holes (3) and the second limiting holes (7) form a through channel. A plug rod (4) with a polygonal cross section that matches the first limiting hole (3) and the second limiting hole (7) is inserted into the through channel. Both ends of the plug rod (4) are provided with threaded holes (5), and bolts (6) are threaded onto the threaded holes (5) for fixing the plug rod (4) on the fixing frame (1) when the two pressing parts of the upper die press head (2) alternate.

2. The upper die device for a bending machine according to claim 1, characterized in that: The fixing frame (1) has grooves (8) on both sides that are connected to the first limiting hole (3) for storing bolts (6).

3. The upper die device for a bending machine according to claim 1, characterized in that: The upper side of the fixed frame (1) has a rectangular groove (9) that matches the bending machine.

4. The upper die device for a bending machine according to claim 3, characterized in that: The lower edge of the rectangular groove (9) extends outward and is provided with a boss (10).

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