Lower die of bending machine

Abstract

The utility model discloses a lower die of a bending machine, relates to the technical field of bending machines, and aims to solve the problems that in the using process of an existing lower die, due to the fact that corners of a notch serve as main stress points, the lower die is extremely prone to abrasion, the die needs to be replaced integrally during replacement, and cost is high. The high-carbon steel edge strips are arranged on the two sides of the inner wall of the V-shaped groove; the inclined through holes are formed in the two ends of the two sides of the lower die body, first screws are installed in the inclined through holes, high-carbon steel edge strips are connected with the lower die body through the first screws, rubber pads are arranged on the outer walls of the high-carbon steel edge strips, inserting pieces are arranged on the two sides of the front end of the lower die body, and the inserting pieces and the lower die body are integrally formed. Inserting grooves are formed in the two sides of the rear end of the lower die body, first connecting holes are formed in the inserting pieces, and second connecting holes are formed in the outer sides of the inserting grooves.

Description

Technical Field

[0001] The utility model relates to the technical field of bending machines, in particular to a lower die of a bending machine. Background Art

[0002] A bending machine is a machine that can bend thin plates. Its structure mainly includes a bracket, a workbench and a clamping plate. The workbench is placed on the bracket. The workbench is composed of a base and a pressing plate. The base is composed of a base shell, a coil and a cover plate. The coil is placed in the depression of the base shell, and the top of the depression is covered with a cover plate. When in use, the coil is energized by a wire, and after energization, gravity is generated on the pressing plate, thereby clamping the thin plate between the pressing plate and the base. The bending machine mold is a tool used by the bending machine to process and shape sheet materials. This tool is composed of various parts, and different molds have different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the formed material. Under the action of the bending machine pressure, the upper and lower molds of the bending machine are mutually guided to make the raw material into a workpiece with a specific shape and size.

[0003] The existing bending machine lower die, such as the one with announcement number CN106475463A, is a bending machine lower die. It includes a lower die base installed on a workbench, a die surface of the lower die base is provided with a U-shaped groove, a nylon lower die is installed in the U-shaped groove, and a bending groove for bending a workpiece to be bent into a set shape is provided on the processing plane of the nylon lower die.

[0004] During the use of the above-mentioned lower die, the groove corners are the main stress points and are very easy to wear. When replacing, the entire die needs to be replaced, which is costly. Therefore, the utility model proposes a bending machine lower die to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a lower die for a bending machine, so as to solve the problem that the existing lower die mentioned in the above background technology is very easy to wear during use because the groove corners are the main stress points, and the whole die needs to be replaced when replaced, which is costly.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lower die of a bending machine, comprising a lower die body, wherein the upper end of the lower die body is provided with a V-shaped groove;

[0007] Also includes:

[0008] High carbon steel side strips, which are arranged on both sides of the inner wall of the V-shaped groove;

[0009] The inclined through holes are arranged at both ends of the lower mold body, the first screws are installed inside the inclined through holes, and the high carbon steel side strips are connected to the lower mold body through the first screws.

[0010] Preferably, a rubber pad is provided on the outer wall of the high carbon steel edge strip.

[0011] Preferably, insert pieces are provided on both sides of the front end of the lower mold body, and the insert pieces are integrally formed with the lower mold body, and slots are provided on both sides of the rear end of the lower mold body.

[0012] Preferably, a first connection hole is provided inside the inserting piece, and a second connection hole is provided outside the slot.

[0013] Preferably, a bottom plate is installed below the lower mold body, a convex strip is provided at the upper end of the bottom plate, a groove is provided at the connection between the lower mold body and the convex strip, a screw hole is provided in the middle of the lower end of the bottom plate, three screw holes are provided, and the three screw holes are equidistantly distributed.

[0014] Preferably, fixing through holes are arranged inside the four corners of the bottom plate and the four corners of the lower end of the lower mold body, second screws are arranged inside the fixing through holes, and the bottom plate is connected to the lower mold body through the second screws.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model arranges high-carbon steel side strips connected by first screws on the inner walls on both sides of the V-shaped groove of the lower mold body, and rubber pads are arranged on the outer walls of the high-carbon steel side strips. Since the corners of the lower mold are vulnerable parts, replacing them with high-carbon steel side strips can ensure hardness, and the first screws can be removed and replaced separately when worn, thereby reducing replacement costs. The rubber pads on the surface of the high-carbon steel side strips avoid the high-carbon steel side strips from causing wear to the surface of the workpiece during the bending process, thereby ensuring the molding quality of the workpiece and solving the problem that the existing lower mold is prone to wear during use because the corners of the grooves are the main stress points, and the mold needs to be replaced as a whole when replaced, which is costly.

[0017] 2. By arranging a detachable bottom plate at the bottom of the lower mold body, the lower mold body can be connected to the workbench in a variety of ways. If the workbench is a clamp structure, the flat bottom of the bottom plate below the lower mold body can be used to directly contact the table surface, and the lower mold body can be clamped and fixed by the clamp. If the surface of the workbench is a T-slot, the screw holes at the lower end of the bottom plate can be used to install T-bolts to facilitate fixation with the T-slot on the table surface. If the surface of the workbench is a groove structure, the second screws at the four corners of the bottom plate can be removed, the bottom plate can be turned over so that the convex strips on the bottom plate face downward, and the second screws can be used to reconnect the bottom plate to the lower mold body. At this time, the convex strips at the lower end of the bottom plate can be used to slide and fix with the groove structure of the workbench surface. If the workbench surface is a convex strip structure, the bottom plate can be directly removed, and the groove on the lower surface of the lower mold body can be used to slide and connect with the convex strips on the table surface, which greatly improves the flexibility of the lower mold installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the bottom structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the bottom plate structure of the utility model in a flipping state;

[0022] In the figure: 1. lower mold body; 2. high carbon steel side strip; 3. oblique through hole; 4. insert; 5. first connecting hole; 6. slot; 7. second connecting hole; 8. bottom plate; 9. screw hole; 10. fixing through hole; 11. groove; 12. convex strip; 13. rubber pad; 14. first screw; 15. second screw; 16. V-shaped groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figure 1-4 , the utility model provides an embodiment: a lower die of a bending machine, comprising a lower die body 1, and a V-shaped groove 16 is provided at the upper end of the lower die body 1;

[0025] Also includes:

[0026] High carbon steel side strips 2, which are arranged on both sides of the inner wall of the V-shaped groove 16;

[0027] The oblique through holes 3 are arranged at both ends of the lower mold body 1 . The first screws 14 are installed inside the oblique through holes 3 , and the high carbon steel side strips 2 are connected to the lower mold body 1 through the first screws 14 .

[0028] See also Figure 1 A rubber pad 13 is arranged on the outer wall of the high carbon steel edge strip 2. The rubber pad 13 cooperates with the high carbon steel edge strip 2. The high carbon steel edge strip 2 ensures the structural strength of the vulnerable part while avoiding the wear of the workpiece surface by the high carbon steel edge strip 2 during the bending process through the rubber pad 13, thereby ensuring the forming quality of the workpiece.

[0029] See also Figure 2Insert pieces 4 are arranged on both sides of the front end of the lower mold body 1, and the insert pieces 4 are integrally formed with the lower mold body 1. Slots 6 are arranged on both sides of the rear end of the lower mold body 1. For different workpiece lengths, the lower mold body 1 can be provided with a plurality of insert pieces 4 at the end that are plugged and connected with the slots 6 at the other end, and used in combination to extend the length of the lower mold to adapt to workpieces of different specifications.

[0030] See also Figure 2 A first connecting hole 5 is provided inside the plug 4, and a second connecting hole 7 is provided outside the slot 6. After the lower mold body 1 is plugged into the plug 4 and the slot 6, the connecting holes on the plug 4 and the slot 6 can be locked by screws to achieve a reinforcement effect and ensure the connection stability.

[0031] See also Figure 3 A bottom plate 8 is installed below the lower mold body 1, a convex strip 12 is arranged at the upper end of the bottom plate 8, a groove 11 is arranged at the connection between the lower mold body 1 and the convex strip 12, a screw hole 9 is arranged in the middle of the lower end of the bottom plate 8, three screw holes 9 are arranged, and the three screw holes 9 are equidistantly distributed, the inside of the four corners of the bottom plate 8 and the four corners of the lower end of the lower mold body 1 are all provided with fixing through holes 10, the inside of the fixing through holes 10 is provided with a second screw 15, and the bottom plate 8 is connected to the lower mold body 1 through the second screw 15, and the lower mold body 1 can be connected to the workbench in a variety of ways. If the workbench is a fixture structure, the flat bottom of the bottom plate 8 below the lower mold body 1 can be used to directly contact the table surface , clamp and fix the lower mold body 1 with a clamp. If the surface of the workbench is a T-slot, the screw hole 9 at the lower end of the bottom plate 8 can be used to install the T-bolt to facilitate fixation with the T-slot on the table. If the surface of the workbench is a groove structure, the second screws 15 at the four corners of the bottom plate 8 can be removed, and the bottom plate 8 can be turned over so that the convex strip 12 on the bottom plate 8 faces downward, and the second screws 15 can be used again to connect the bottom plate 8 to the lower mold body 1. At this time, the convex strip 12 at the lower end of the bottom plate 8 can be slidably fixed with the groove structure of the workbench surface. If the surface of the workbench is a convex strip structure, the bottom plate 8 can be directly removed, and the groove 11 on the lower surface of the lower mold body 1 can be used to slide and connect with the convex strip on the table.

[0032] Working principle: When in use, the inner walls on both sides of the V-shaped groove 16 of the lower mold body 1 are provided with high-carbon steel side strips 2 connected by the first screws 14, and the outer walls of the high-carbon steel side strips 2 are provided with rubber pads 13. Because the corners of the lower mold are vulnerable parts, replacing them with high-carbon steel side strips 2 can ensure hardness, and the first screws 14 can be removed and replaced separately when worn, thereby reducing replacement costs. The rubber pads 13 on the surface of the high-carbon steel side strips 2 avoid the high-carbon steel side strips 2 causing wear on the workpiece surface during the bending process, thereby ensuring the molding quality of the workpiece.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A lower die of a bending machine, comprising a lower die body (1), wherein the upper end of the lower die body (1) is provided with a V-shaped groove (16); the characteristics are: Also includes: High carbon steel side strips (2) arranged on both sides of the inner wall of the V-shaped groove (16); Oblique through holes (3) are arranged at both ends of the lower mold body (1), a first screw (14) is installed inside the inclined through holes (3), and the high carbon steel side strip (2) is connected to the lower mold body (1) through the first screw (14); Insert pieces (4) are provided on both sides of the front end of the lower mold body (1), and the insert pieces (4) are integrally formed with the lower mold body (1), and slots (6) are provided on both sides of the rear end of the lower mold body (1).

2. A lower die for a bending machine according to claim 1, characterized in that: A rubber pad (13) is provided on the outer wall of the high-carbon steel side strip (2).

3. The lower die of a bending machine according to claim 1, characterized in that: A first connection hole (5) is provided inside the inserting piece (4), and a second connection hole (7) is provided outside the slot (6).

4. The lower die of a bending machine according to claim 1, characterized in that: A bottom plate (8) is installed below the lower mold body (1), a convex strip (12) is provided at the upper end of the bottom plate (8), a groove (11) is provided at the connection between the lower mold body (1) and the convex strip (12), and a screw hole (9) is provided in the middle of the lower end of the bottom plate (8), three screw holes (9) are provided, and the three screw holes (9) are equidistantly distributed.

5. The lower die of a bending machine according to claim 4, characterized in that: The four corners of the bottom plate (8) and the four corners of the lower end of the lower mold body (1) are each provided with a fixing through hole (10), a second screw (15) is provided inside the fixing through hole (10), and the bottom plate (8) is connected to the lower mold body (1) via the second screw (15).

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