A structure of a trimming slot in a mold

Abstract

This utility model relates to the field of mold technology and discloses a burr relief groove structure inside a mold, including a strip and a lower mold plate. The strip is movably connected to the top of the lower mold plate. Multiple trimming punches are provided inside the lower mold plate. Burr relief grooves are machined around the trimming punches. A floating pin is movably connected inside the lower mold plate. The top of the floating pin is in contact with the bottom of the strip. Equidistant stepping is achieved through positioning holes, floating pins and a feeding mechanism. The lower mold plate provides a precise assembly reference to ensure the positional accuracy of the trimming punches and the strip. The burrs generated by the trimming punches are collected by the burr relief grooves and discharged with the strip, ensuring smooth feeding and stable and efficient operation of the continuous stamping process. The final product is a high-precision stamped part, which can reduce surface defects, improve the appearance quality and dimensional accuracy of the product, and reduce quality problems such as product damage.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold inner burr relief groove structure. Background Technology

[0002] Conventional progressive die templates do not have burr relief grooves. During continuous stamping, there will be gaps between the punch and the insert, resulting in varying degrees of burr thickness and thus burrs. If the template does not have burr relief grooves, residual iron filings and waste may be pressed into the product in the template as the die moves. With repeated movement of the strip, iron filings accumulate, causing product deformation due to pressure inside the die, thus affecting product quality and die precision.

[0003] The presence of iron filings may cause damage to sheet metal parts during the stamping process, such as scratches, dents or other forms of surface defects, thereby reducing the overall quality of the product. The accumulation of iron filings inside the mold may aggravate the wear of the mold, especially on critical components such as guide blocks. Long-term accumulation of iron filings may cause abnormal wear of the mold and shorten its service life.

[0004] The generation and accumulation of iron filings increases the frequency of mold maintenance, leading to increased downtime for cleaning and thus reducing production efficiency. In addition, iron filings may get stuck in the moving parts of the mold, affecting its normal operation and further reducing production efficiency. A large amount of iron filings accumulating inside the mold may cause the mold to crack or be damaged under pressure, creating a safety hazard.

[0005] To address the aforementioned issues, we propose an internal burr clearance groove structure for the mold. Utility Model Content

[0006] To address the technical problems that the generation and accumulation of iron filings increases the maintenance frequency of molds, and that iron filings may also get stuck in the moving parts of the mold, affecting its normal operation and further reducing production efficiency, this utility model provides a burr relief groove structure inside the mold.

[0007] This utility model is achieved by the following technical solution: a burr relief groove structure inside a mold, including a strip and a lower template. The strip is movably connected to the top of the lower template. The lower template has multiple trimming punches inside. The trimming punches are machined with burr relief grooves around their perimeter. A floating pin is movably connected inside the lower template. The top of the floating pin is in contact with the bottom of the strip.

[0008] Preferably, the surface of the lower template is machined with a plurality of positioning holes, and the top of the lower template is machined with a plurality of positioning grooves, wherein the plurality of positioning holes correspond to the positioning grooves on the top of the lower template.

[0009] Preferably, the top of the lower template is machined with two material strip edge clearance grooves, which are located on both sides of the material strip.

[0010] Preferably, the rough edge relief groove is located between two material strip edge relief grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In use, this utility model achieves equidistant stepping through positioning holes, floating pins, and a feeding mechanism. The lower template provides a precise assembly reference, ensuring the positional accuracy of the trimming punch and the strip. The burrs generated during the trimming punching process are collected by the burr clearance groove and discharged with the strip, ensuring smooth feeding and enabling the continuous stamping process to operate stably and efficiently. Ultimately, it produces high-precision stamped parts, which can reduce surface defects, improve the appearance quality and dimensional accuracy of the product, and reduce quality problems such as product damage. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of part A in the middle.

[0015] In the diagram: 1. Material strip; 2. Lower template; 3. Trimming punch; 4. Rough edge clearance groove; 5. Positioning hole; 6. Material strip edge clearance groove; 7. Floating material pin. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0017] Example 1: Please refer to Figure 1 - Figure 2 The present embodiment of a mold burr relief groove structure includes a strip 1 and a lower template 2. The strip 1 is movably connected to the top of the lower template 2. The lower template 2 is provided with a plurality of trimming punches 3. The trimming punches 3 are machined with burr relief grooves 4 around their perimeter. The lower template 2 is movably connected with a floating pin 7. The top of the floating pin 7 is in contact with the bottom of the strip 1.

[0018] Among them, strip 1 is the "carrier" for continuous stamping. It consists of the main material with positioning holes 5 and the safety width allowance. Positioning holes 5 are the "benchmark" for subsequent precise feeding, while the safety width allowance serves as a "connecting bridge" to link the semi-finished products of each process, making continuous stamping possible. It is the material basis of the entire stamping process.

[0019] The trimming punch 3 is responsible for removing the excess edges of the semi-finished strip material. During processing, the excess material at the edge of the strip 1 enters the trimming station, where the trimming punch performs "cutting". The resulting burrs fall into the burr relief groove 4, which provides space to prevent the burrs from pressing against the mold surface. At the same time, with the traction force of the continuous feeding of the strip 1, the burrs are "carried out" of the mold as the strip moves, achieving automatic waste removal and ensuring the cleanliness of the mold interior and continuous processing.

[0020] The lower template 2 is the "base" of the mold. Key components such as the trimming punch 3 and positioning components are installed on it. Its function is similar to the "origin of the coordinate system". Through high-precision machining and assembly, it ensures that the relative positions of each component, such as the upper die punch and positioning pin, are absolutely accurate. During stamping, the upper die moves downward and the lower die closes. The rigid support and precise positioning of the lower template 2 allow the trimming punch 3 to act stably and accurately on the strip, ensuring the precise position of each stamping.

[0021] The floating pin 7 is the "power and positioning" unit of the feeding system. When the mold opens, the floating pin 7 lifts the material strip 1, causing it to detach from the surface of the positioning hole 5. The feeding mechanism, in coordination with the positioning hole 5, pulls the material strip 1 forward. The floating pin 7 rises with the material strip, feeds, and falls back to reset, repeating the cycle. It "lifts and coordinates with the positioning hole 5 to maintain a fixed distance," allowing the material strip to enter each work station at a stable and equidistant rhythm. It is the "power actuator" for achieving continuous and precise stamping.

[0022] Furthermore, the surface of the lower template 2 is machined with multiple positioning holes 5, and the top of the lower template 2 is machined with multiple positioning grooves. The positioning holes 5 work in conjunction with the feeding mechanism inside the mold, acting like a "navigation beacon": when the mold opens and feeds, the positioning holes accurately capture the position of the material strip, forcing the material strip 1 to move at equal intervals, ensuring that each engineering station can process at a fixed position on the material strip 1, avoiding dimensional errors caused by feeding deviations from the source, which is a key link in precision control;

[0023] Furthermore, two material strip edge clearance grooves 6 are machined on the top of the lower template 2. The two material strip edge clearance grooves 6 are located on both sides of the material strip 1, and the rough edge clearance groove 4 is located between the two material strip edge clearance grooves 6.

[0024] Among them, multiple positioning holes 5 correspond to the positioning grooves on the top of the lower template 2. During the feeding and stamping process, the edge excess material of the strip 1 will undergo slight deformation with the process. The strip edge clearance groove 6 is specially reserved for these "changing edges" to avoid hard contact and squeezing between the strip 1 and the lower template 2. The principle is to eliminate the risk of interference between the mold and the edge of the strip through the "avoidance" design, ensure smooth feeding, and prevent the strip from affecting the accuracy of subsequent stations due to extrusion deformation.

[0025] Secondly, by designing a burr relief groove 4 inside the mold, during continuous molding or the process, the material may overflow the closed area of ​​the mold and form burrs. The design of the burr relief groove 4 can effectively collect these excess materials, preventing them from contaminating the finished product or affecting the closure of the mold. By setting the burr relief groove 4, defects on the product surface can be reduced, the appearance quality and dimensional accuracy of the product can be improved, and quality problems such as product crushing can be reduced.

[0026] Working principle: The strip material acts as a "carrier," achieving equidistant stepping through positioning holes 5, floating pins 7, and a feeding mechanism. The lower template 2 provides a precise assembly benchmark, ensuring the positional accuracy of the trimming punch 3 and the strip material 1. The burrs generated by the trimming punch 3 are collected by the burr clearance groove 4 and discharged with the strip material. The strip edge clearance groove 6 eliminates edge interference, ensuring smooth feeding. All components form a closed loop from "carrier conveying - precision assurance - processing waste removal - anti-interference," enabling the continuous stamping process to operate stably and efficiently, ultimately producing high-precision stamped parts. This reduces surface defects, improves the appearance quality and dimensional accuracy of products, and reduces quality problems such as product damage.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A structure of a trimming slot in a mold, comprising a material strip (1) and a lower mold plate (2), characterized in that, The strip (1) is movably connected to the top of the lower template (2). The lower template (2) is provided with multiple trimming punches (3). The trimming punches (3) are machined with rough edge relief grooves (4) around their perimeter. The lower template (2) is movably connected with a floating pin (7). The top of the floating pin (7) is in contact with the bottom of the strip (1).

2. A structure of a burr displacement groove in a mold according to claim 1, wherein The surface of the lower template (2) is machined with a plurality of positioning holes (5), and the top of the lower template (2) is machined with a plurality of positioning grooves, the plurality of positioning holes (5) corresponding to the positioning grooves on the top of the lower template (2).

3. The structure of the inner let-in slot for the flash according to claim 1, wherein The top of the lower template (2) is machined with two material strip edge relief grooves (6), which are located on both sides of the material strip (1).

4. The mold inner burr relief groove structure according to claim 1, characterized in that, The rough edge relief groove (4) is located between the two material strip edge relief grooves (6).

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