CN204700119U - A kind of concealed waste knife mechanism of edger - Google Patents

Abstract

The utility model discloses the concealed waste knife mechanism of a kind of edger, it comprises main edge-trimming cutter, back-moving spring, movable edge-trimming cutter, main cutoff tool and limited block, the edge of a knife of described main edge-trimming cutter, movable edge-trimming cutter and main cutoff tool connects together linearly, movable edge-trimming cutter is between main edge-trimming cutter and main cutoff tool, can slide by vertical direction, trimming and cut-out two procedures can be carried out simultaneously.This mechanism can avoid the process of tearing, and prevents the generation of iron filings, solves the iron filings produced in trimming operation and is brought on punch, thus causes stamping parts to occur a large amount of convex closure, causes the problem that stamping parts is reprocessed in enormous quantities, improves operating efficiency.

Description

A hidden scrap knife mechanism for trimming die

technical field

The utility model relates to a mold, more specifically, a hidden waste knife mechanism for trimming molds.

Background technique

   In stamping plants, especially in automated production, when stamping parts are produced, the size of the original steel plate is much larger than that of the stamping part, so the edge trimming process is involved in the production process. In order to prevent the cut waste from being stuck on the mold during the production process due to the excessive size of the cut waste, there are multiple waste knives designed around the cut edge mold, so before cutting off the excess material, the excess material will be cut The material is cut off, the excess material is cut into multiple segments, and then the excess material is removed from the stamping part. In this way, the problem of edge trimming waste stuck on the mold can be effectively prevented.

Although this can well solve the problem of trimming scrap stuck on the mould, it also brings a lot of trouble to production. At present, the edge trimming die is basically cut into several sections of excess steel plate material first, and then cut off. However, after the steel plate material is first cut into several sections, the overall rigidity of these redundant steel plate materials will decrease, so that in the process of cutting off excess material, the steel plate material will be accompanied by a useless stage in the shearing stage—tearing crack stage. In the tearing stage, the surface of the steel plate material will be torn, resulting in a large amount of iron filings, which will fall on the surface of the lower die with the upward movement of the upper die. The following stamping parts produce a large number of convex hulls, which will cause a large number of stamping parts to be repaired, resulting in a significant reduction in the pass rate of the first off-line, and reduce the quality of the product, especially for outer panels that require high surface quality. When it is difficult to repair due to the batches of convex hulls, the stamping parts can only be scrapped, which greatly increases the production cost.

Utility model content

In order to solve the problem that the iron filings produced in the edge trimming process are brought to the punch, resulting in a large number of convex hulls on the stamping parts, resulting in a large number of repairs of the stamping parts, a hidden edge trimming die is proposed. waste knife mechanism.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

A hidden waste knife mechanism of a side trimming die, comprising a main side trimming knife, a return spring, and a main cutting knife, characterized in that it also includes a movable side trimming knife and a limit block, the main side trimming knife, the movable side trimming The main cutting edge of the knife and the main cutting knife are close together and connected into a line to form the cutting edge of the side cutting knife. The side of the main cutting knife is the cutting edge of the cutting knife. Vertical slide mate. After the raw material is stamped and formed, the excess material can be trimmed and cut at the same time to avoid the tearing process and prevent the generation of iron filings.

As a preference, the main trimming knife is connected and fixed with the upper die by bolts, and its knife edge is a straight line.

As preferably, the main cutting knife is connected and fixed with the upper die by bolts, and the edge of the edge trimming knife is a straight line, and the edge of the cutting knife is a straight line, and perpendicular to each other, the main cutting knife is connected and fixed with the upper die by bolts, and the edge of the edge trimming knife is a straight line, and is perpendicular to each other. The edge of the knife is a straight line, and the cutting edge of the knife is a straight line, and they are perpendicular to each other. The main cutting knife will be used as a trimming knife and also as a cutting knife.

As preferably, the movable edge trimming knife is arranged between the main edge trimming knife and the main cutting knife, when as the edge trimming knife, the front of the knife edge is a plane, the bottom surface is also a plane, and the two planes are vertical planes, when as the cutting knife, The movable side knife retracts upwards, leaving a space for the main cutting knife to cut off.

As a preference, the return spring is arranged on the top of the movable edge trimmer and fixed on the upper mold. When the reset spring is in a natural state, the front and bottom surfaces of the movable edge trimmer, the main edge trimmer and the main cutting knife all form a smooth plane.

As a preference, the limit block is fixed on the upper mold by bolts, leans against the movable edge trimming knife to form a vertical sliding fit, and the movable edge trimming knife can only slide vertically.

As a preference, steps are provided on the contact surface of the main edge trimming knife and the main cutting knife with the movable edge trimming knife, which reduces the area of the contact surface and reduces the friction force. The smoothness of the vertical sliding of the edge knife.

As a preference, the return spring is a nitrogen gas spring. The nitrogen gas spring has the characteristics of small size, large elastic force, long life and constant spring pressure. The small size can save the mold space, and the long life can reduce the number of mold maintenance.

Therefore, the utility model has the following beneficial effects:

The two processes of trimming and cutting are carried out at the same time, which avoids the tearing process, eliminates the generation of iron filings, reduces the repair rate and scrap rate of stamping parts, and also reduces production costs and improves work efficiency.

Description of drawings

Figure 1 is a schematic structural view of the utility model.

In the figure: 1. main edge trimming knife, 2. return spring, 3. movable edge trimming knife, 4. main cutting knife, 5 limit blocks.

Detailed ways

Example 1

A kind of hidden waste knife mechanism of trimming mold as shown in Figure 1, comprises main trimming knife 1, return spring 2, main cutting knife 4, is characterized in that also comprises movable edge trimming knife 3 and stop block 5, so The main cutting edges of the main edge trimming knife 1, the movable edge trimming knife 3 and the main cutting knife 4 are close together to form a line to form the edge of the edge trimming knife. The side knife 3 is between the main edge cutting knife 1 and the main cutting knife 4, forming a vertical sliding fit. Main trimming knife 1 is fixed on the patrix by bolt, and its edge of a knife is a straight line. Main cutting knife 4 is connected and fixed with upper die by bolt, and its edge trimming knife edge is a straight line, and its cutting knife edge is a straight line, and perpendicular to each other. The spring is arranged on the top of the movable edge cutter 3 and is fixed on the upper die. The limit block is fixed on the upper die by bolts, and leans against the movable edge cutter 3 to form a vertical sliding fit. The contact surfaces of the main trimming knife 1 and the main cutting knife 4 with the movable edge trimming knife 3 are all provided with steps, and the length of the steps is greater than the feeding amount of the scrap knife of the lower die. Return spring is nitrogen gas spring.

After the raw material is stamped and formed, the upper mold continues to go down and touches the raw material, and the trimming and cutting processes are carried out at the same time. The movable edge trimming knife 3 is affected by the waste knife force of the lower mold, and slides upward. The return spring 2 is compressed, trimming and cutting off. After the work is completed, the excess waste material falls, the upper die moves upwards, the return spring 2 returns to its natural state, and the movable edge trimmer 3 slides down to the original position, repeating this process. The edge trimming and cutting process are carried out at the same time to avoid the tearing process and prevent the generation of iron filings.

Claims (7)

1. A hidden waste knife mechanism of a trimming die, including a main trimming knife (1), a return spring (2), and a main cutting knife (4), and it is characterized in that it also includes a movable trimming knife (3) and a limiter Block (5), the main cutting edge of the main edge trimming knife (1), the movable edge trimming knife (3) and the main cutting knife (4) are connected together in a straight line to form the edge of the edge trimming knife. The inner surface of the cutting knife (4) is the edge of the cutting knife, and the movable edge cutting knife (3) can be vertically slidably arranged between the main edge cutting knife (1) and the main cutting knife (4). 2. A concealed waste knife mechanism for edge trimming die according to claim 1, characterized in that the main edge trimming knife (1) is fixed on the upper die by bolts, and its edge is straight. 3. A concealed scrap knife mechanism for edge trimming die according to claim 1, characterized in that the main cutting knife (4) is connected and fixed with the upper die by bolts, the edge of the edge trimming knife is straight, and the cutting knife The edge of a knife is also linear, and the edge of the edge trimmer and the edge of the cutting knife are perpendicular to each other. 4. A concealed scrap knife mechanism for edge trimming die according to claim 1, characterized in that the lower part of the return spring is set on the top of the movable edge trimming knife (3), and the upper part of the return spring is fixed on the upper die. 5. A concealed waste knife mechanism of a trimming die according to claim 1, characterized in that the limit block is in close contact with the movable trimming knife (3) and fixed on the upper die by bolts to form a vertical sliding fit. 6. A concealed waste knife mechanism for trimming die according to claim 1, characterized in that the contact surfaces of the main trimming knife (1) and the main cutting knife (4) with the movable edge trimming knife (3) All are provided with steps, and the length of the steps is greater than the feeding amount of the scrap knife of the lower mold. 7. A concealed scrap knife mechanism for trimming dies according to claim 1 or 4, characterized in that the return spring is a nitrogen gas spring.