Side knockout hole scrap drop guide insert for a side knockout die

Abstract

The utility model provides a side punch hole waste material guiding insert for side punch mould, including guide piece body, the lower extreme of guide piece body is provided with blanking guide surface, the upper end of blanking guide surface is provided with lead -in slope, lead -in slope and blanking guide surface are set up to the outside inclination to the upward, the upper end of lead -in slope and the convex setting to side punch insert direction, set up on the convex part and pass through the air hole of convex part, lead -in slope and side punch punch head in side punch mould are opposite and set up, the bottom height of air hole side punch punch head's top surface, lead -in slope and side punch insert in side punch mould form waste material containing channel between, whole guiding insert structure stability can effectively prevent waste material adhesion extrusion and burst mould.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically to a side punching hole waste removal guide insert for a side punch press. Background Technology

[0002] In the automotive parts manufacturing industry, stamping technology is a crucial process. Some automotive stamped parts are irregularly shaped products, such as stamped holes with triangular cross-sections. The stamping process typically involves blanking, forming, and side punching. To ensure proper side punching production, inserts and internal guide pillars are required for the side punching process. Figure 1 As shown, in the existing side punching production process, a scrap frame 31' is set on the fixed mold and a side punch 20' is set on the moving mold 1'. The side punch 20' moves laterally to punch the material to form scrap 30'. However, since the stamping production material and mold are contaminated with oil, as the number of stampings increases, the punch wears and produces burrs, resulting in scrap sticking to the stamping channel and not falling off, which affects the side punching effect.

[0003] For example, patent document CN201720998872.0, published on February 27, 2018, discloses a stamping die, including a blanking punch, a die body, and a guide assembly. The die body has a blanking channel for waste material to pass through. The blanking channel extends along a first direction. The guide assembly is connected to the die body, and the guide assembly and the blanking punch are located at opposite ends of the blanking channel. The blanking punch selectively extends into the blanking channel to move the waste material toward the guide assembly, or the blanking punch moves away from the guide assembly. The guide assembly has a guide surface located on the side of the guide assembly closer to the blanking channel, and the intersection of the guide surface and any plane is a curve.

[0004] The guide surface in the above literature is set as a curved surface, which has a high processing complexity and requires more space to achieve smoothness. For irregularly shaped scrap parts with rounded corners at multiple corner positions, if the rounded corner angle is the same as the curved surface setting of the guide surface, the scrap cannot be guided well. In addition, in order to prevent the scrap in the scrap receiving cavity from being punched out during the side punching, a cover plate needs to be set at the upper end of the scrap receiving cavity for covering. However, when the punching punch is punched, a momentary high-pressure airflow is generated in the scrap receiving cavity. The high-pressure airflow impacts the scrap, causing abnormal interference of the airflow on the scrap, thus affecting the guiding effect. Utility Model Content

[0005] This utility model provides a waste material guide insert for side punching dies, which can guide the waste material pushed out by the side punch in segments, solving the problem of waste material sticking, jamming, and bursting the die. It has a simple structure, low cost, and high guiding effect.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: a guide insert for scrap removal from a side punch in a side punch mold, comprising a guide body, a scrap guide surface at the lower end of the guide body, an inlet inclined surface at the upper end of the scrap guide surface, the inlet inclined surface and the scrap guide surface being inclined upward and outward, the upper end of the inlet inclined surface protruding towards the side punch insert, a vent hole penetrating the protrusion being provided on the protrusion, the inlet inclined surface being opposite to the side punch in the side punch mold, the bottom of the vent hole being at the same height as the top surface of the side punch, and a scrap receiving channel being formed between the inlet inclined surface and the side punch insert in the side punch mold.

[0007] The above setup, by setting an inlet ramp with the ramp facing the side punch, forms the first contact surface impacted by the horizontal thrust of the waste material. This converts the initial horizontal kinetic energy of the waste material into downward kinetic energy, avoiding the violent rebound caused by the high-speed impact of the waste material against the vertical wall. Furthermore, the inlet ramp can continuously apply the same tilting action to the waste material. For waste material with rounded corners, the rounded corners contact the inlet ramp, dispersing the impact load and reducing stress concentration in local areas of the guide insert. Simultaneously, by setting the lower half of the dropping guide surface to the bottom loading area of ​​the waste dropping frame, a smooth plane is formed to guide the vertical falling path, ensuring that the waste material maintains stable downward movement in the final stage of the discharge path. This prevents the waste material from getting stuck or rebounding secondaryly near the outlet due to changes in direction or structural obstructions. Additionally, the vent holes prevent the high pressure generated by the rapid action of the side punch from causing uneven waste material discharge. The structure is simple and has a good guiding effect.

[0008] Furthermore, the side punching die includes a fixed die and a movable die. The fixed die is provided with a receiving cavity, a scrap frame is provided at the bottom of the receiving cavity, and a discharge guide surface is provided at the upper end of the scrap frame. The discharge guide surface is perpendicular to the bottom surface of the fixed die.

[0009] The above settings ensure that the waste material falls vertically into the waste box by setting the material guide surface perpendicular to the bottom surface of the fixed mold.

[0010] Furthermore, the upper part of the vent is connected to the outside.

[0011] The above design allows airflow through the vent holes to pass through the upper surface of the cover plate, thus enabling air pressure circulation.

[0012] Furthermore, the upper surface of the protrusion is higher than the upper surface of the receiving cavity.

[0013] The above settings facilitate the installation of the guide insert.

[0014] Furthermore, a cover plate is detachably provided on the top of the receiving cavity, and the cover plate is provided with mounting holes that match the protrusion.

[0015] The above setup uses through holes in the cover plate to fix the upper end of the guide body.

[0016] Furthermore, a waste frame placement groove is provided at the lower end of the receiving cavity, and an installation plate is provided at the upper end of the waste frame placement groove. A through hole is opened in the middle of the installation plate, which communicates with the waste frame. The installation plate is detachably installed on the top surface of the waste frame placement groove, and a first installation groove for engaging the bottom of the guide body is provided on the installation plate.

[0017] The above setup secures the bottom of the guide body by snapping it onto the mounting plate, which is then detachably fixed to the waste box placement slot.

[0018] Furthermore, the angle between the inclined surface and the blanking guide surface is greater than 90 degrees and less than 180 degrees.

[0019] The above settings, through the tilt angle adjustment, can ensure a certain waste material carrying channel while also providing better guidance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a side-punch die structure in the prior art;

[0021] Figure 2 This is a schematic diagram of the side punch press structure after the present invention has been installed;

[0022] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 4 This is a front view of the present invention.

[0024] Figure 5 This is a schematic diagram showing the connection between the present invention, the receiving cavity, and the cover plate.

[0025] Explanation of icon numbers:

[0026] 1-Moving mold; 2-Fixed mold; 200-Receiving cavity; 201-Scrap material bin placement slot; 202-Mounting plate; 203-First mounting slot; 204-Cover plate; 205-Mounting hole; 206-Through hole; 10-Ventilation hole; 100-Scrap material guide insert; 1000-Guide body; 1001-Introduction ramp; 1002-Discharge guide surface; 1003-Fixing block; 1004-Protrusion; 20-Side punch; 21-Side punch insert; 30-Scrap material; 31-Scrap material frame; 4-Reset spring; 5-Wedge mechanism; 501-Wedge; 502-Slider. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 2-4 As shown, a side punching hole scrap guide insert for a side punching die is placed in a side punching press. The side punching press includes a side punching head 20 arranged along the transverse direction of the side punching press. A fixed mold 2 is set at the front end of the side punching head 20. A placement groove (not shown in the figure) for placing the side punching insert 21 is set on the fixed mold 2. The side punching insert 21 is provided with a shape to be punched and a sheet of material is provided on the side punching insert 21. The side punching insert 21 is detachably connected to the placement groove. During the punching process, the side punching insert 21 can be changed according to the shape to be punched. A receiving cavity 200 is set on the side of the side punching insert 21 away from the side punching head 20. A guide insert 100 is set in the receiving cavity. One side of the guide insert 100 is fixedly connected to the receiving cavity. A scrap removal frame 31 is set at the bottom of the guide insert 100.

[0029] The side punch 20 is fixedly connected to the moving mold. The moving mold includes a wedge structure 5 and a sliding seat 1. The wedge structure 5 includes a wedge 501 and a slider 502. The wedge 5 is the main driving block of the side punch mold and is a triangular block-shaped object with an inclined working surface. The slider 502 is slidably mounted on the sliding seat 1. A return spring 4 is provided between the side of the sliding seat 1 near the left mold and the slider 502. When the wedge 501 is pressed down, the vertical pressure is decomposed into a horizontal thrust on the slider. At the same time, the slider 502 horizontally pushes the side punch to move in the direction of the material placement. After completing one punching action, the slider 502 moves back to its original position under the thrust of the return spring 4. The side punch 20 exits and moves in the opposite direction to reset.

[0030] like Figure 2 and Figure 5As shown, the guide insert includes a guide body 1000 and a fixing block 1003. The fixing block 1003 is located on one side of the bottom of the guide body 1000. On the side of the guide body 1000 away from the fixing block 1003, there is an inlet inclined surface 1001 and a discharge guide surface 1002. The inlet inclined surface 1001 is located at the upper end of the guide body 1000, and the discharge guide surface 1002 is located at the lower end of the guide body 1000. The bottom of the inlet inclined surface 1001 is fixedly connected to the upper end of the discharge guide surface 1002, and the inlet inclined surface 1001 and the discharge guide surface 1002 are also fixedly connected. The guide surface 1002 is inclined upward and outward. The guide slope 1001 is opposite to the side punch head 20. A waste receiving channel is formed between the guide slope and the side punch insert. An angle A greater than 90 degrees and less than 180 degrees is formed between the guide slope 1001 and the lower half. In this embodiment, A is 144 degrees, and the included angle opening faces the side punch head 21. The blanking guide surface 1002 is set perpendicular to the bottom surface of the fixed mold. The fixed block 1003 is detachably connected to the receiving cavity of the fixed mold of the side punch press, so that the guide insert can withstand the impact of the side punch insert 21 in the horizontal direction.

[0031] When the side punch 20 punches material into the side punch insert of the fixed mold, the scrap 30 cut out enters the scrap receiving channel. After the scrap 30 comes into contact with the guide slope 1001, it is blocked by the upper end of the guide slope 1001, thereby changing its direction of movement. It then falls down along the guide slope 1001 and, under the vertical guidance of the dropping guide surface 1002, the scrap 30 enters the scrap frame 31 through the dropping guide surface 1002, thus ensuring stable dropping.

[0032] like Figure 2 As shown, the guide insert 100 also includes a protrusion 1004, which is disposed at the upper end of the guide slope 1001 and protrudes towards the side-punching insert. The top of the protrusion 1004 is provided with a vent hole 10, one end of which is connected to the top surface of the fixed mold 2, and the other end of which is connected to the bottom surface of the protrusion 1004. The vent hole 10 is configured as a circular through-hole and penetrates the protrusion 1004. At the moment when the waste 30 impacts the guide slope 1001, it quickly balances the high pressure or negative pressure that may be formed between the waste 30 and the slope, eliminates the interference of abnormal air pressure on the guiding movement of the waste 30, and assists in the separation of the waste 30 from the slope, ensuring that the kinetic energy of the waste is efficiently converted into the power for downward sliding.

[0033] like Figure 5 As shown, a cover plate 204 is detachably provided on the top of the receiving cavity 200, and the cover plate 204 is provided with mounting holes 205 that match the protrusion. In this embodiment, the cover plate and the top of the receiving cavity are connected by bolts.

[0034] A waste frame placement groove 201 is provided at the lower end of the receiving cavity 200, and a mounting plate 202 is provided at the upper end of the waste frame placement groove 201. A through hole 206 is provided in the middle of the mounting plate 202, which communicates with the waste frame 31. The mounting plate 202 is detachably mounted on the top surface of the waste frame placement groove 31. A first mounting groove 203 for engaging the bottom of the guide body is provided on the mounting plate 202. In this embodiment, the mounting plate is connected to the top surface of the waste frame placement groove by bolts. In order to further increase the reliability of the connection at the bottom of the guide body, the fixing block is connected to the first mounting groove of the mounting plate by bolts.

[0035] The working principle of this utility model is as follows: By setting a guide insert 100, which is detachably connected to the hanging platform structure inside the side punching die via a fixing block 1003, the guide insert 100 is fixed to the inner wall area of ​​the scrap frame 31. This allows the scrap 30, after being pushed horizontally by the side punch 21, to move in the punching direction and contact the guide inclined surface 1001. The guide inclined surface 1001 is inclined to the axial direction of the scrap frame 31, causing the initial horizontal kinetic energy of the scrap 30 to be converted into downward kinetic energy under the guidance of the guide inclined surface 1001. Simultaneously, the vent 10 at the top of the guide insert 100 eliminates the interference of abnormal air pressure on the guiding movement of the scrap 30 and assists in the separation of the scrap 30 from the inclined surface. After contacting the discharge guide surface, the falling scrap 30 maintains its movement in the direction of gravity and falls vertically along the vertical extension direction of the discharge guide surface 1002 to the scrap 30 collection area. The process is simple, effectively preventing scrap from sticking to and bursting the die, ensuring the normal operation of the side punching process.

Claims

1. A guide insert for scrap removal from side punching holes in a side punching die, comprising a guide body, wherein a scrap removal guide surface is provided at the lower end of the guide body, characterized in that: The upper end of the blanking guide surface is provided with an inlet ramp. The inlet ramp and the blanking guide surface are inclined upward and outward. The upper end of the inlet ramp protrudes towards the side punch insert. A vent hole is provided through the protrusion. The inlet ramp and the side punch in the side punch mold are positioned opposite each other. The bottom of the vent hole is at the same height as the top surface of the side punch. A waste material receiving channel is formed between the inlet ramp and the side punch insert in the side punch mold.

2. The side punching hole scrap guide insert for a side punching die according to claim 1, characterized in that: The side punching die includes a fixed die and a movable die. The fixed die is provided with a receiving cavity, and a scrap frame is provided at the bottom of the receiving cavity. A discharge guide surface is provided at the upper end of the scrap frame, and the discharge guide surface is perpendicular to the bottom surface of the fixed die.

3. A guide insert for scrap removal from side punching holes in a side punching die according to claim 1, characterized in that: The upper part of the vent is connected to the outside.

4. A guide insert for scrap removal from side punching holes in a side punching die according to claim 1, characterized in that: The upper surface of the protrusion is higher than the upper surface of the receiving cavity.

5. A guide insert for scrap removal from side punching holes in a side punching die according to claim 4, characterized in that: The top of the receiving cavity is detachably equipped with a cover plate, and the cover plate is provided with mounting holes that match the protrusion.

6. A guide insert for scrap removal from side punch holes in a side punch die according to claim 1, characterized in that: A waste frame placement groove is provided at the lower end of the receiving cavity, and a mounting plate is provided at the upper end of the waste frame placement groove. A through hole is opened in the middle of the mounting plate, which communicates with the waste frame. The mounting plate is detachably mounted on the top surface of the waste frame placement groove, and a first mounting groove for engaging the bottom of the guide body is provided on the mounting plate.

7. A guide insert for scrap removal from side punch holes in a side punch die according to claim 1, characterized in that: The angle between the inclined surface and the blanking guide surface is greater than 90 degrees and less than 180 degrees.

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