A stamping die for hardware machining

Abstract

The utility model relates to stamping die technical field, and disclose a stamping die for hardware machining, include: the lower die of hollow design and set in its upper upper die, still include: set in the lower die and the upper end fixed link of upper die, the utility model in the top rod outward extension and to the hardware that forms after top out, first telescopic shell's upper section will follow the top rod and move up, make telescopic shell stretch, utilize the telescopic shell of many sections close cooperation can make the top rod keep vertical and top out, reduce the top rod and cause the whole deviation and the phenomenon of friction with the ejection hole because of the upper end stress or with work piece irregular surface abutment, when telescopic shell back, its inside gas will inject gasbag, and the gasbag can be through the angle upward gas outlet hole and discharge, can blow away the metal dust and the lubricating liquid produced during processing to the around thimble hole, avoid into thimble hole and cause the accumulation and influence thimble movement smoothness.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a stamping die for processing hardware parts. Background Technology

[0002] Stamping dies are core equipment in metal forming processes. Using specialized tools mounted on a press, they apply immense pressure to cause metal sheets to separate or plastically deform within the die cavity, thus efficiently and in large quantities producing parts (hardware components) of specific shapes and sizes. They are characterized by high production efficiency and good product consistency, and are widely used in the automotive, electronics, and home appliance manufacturing industries. In the ejection system of traditional stamping dies, the guiding structure of the ejector pin usually relies on the ejector pin hole to constrain its movement trajectory. However, the wear resistance of the die material is limited. After the ejector pin is subjected to high-frequency friction in the ejector pin hole for a long time, the ejector pin hole will gradually enlarge. Therefore, when the ejector pin contacts the product surface, it will cause the ejector pin to deviate due to uneven force, resulting in friction with the inner wall of the ejector pin hole and enlargement of the ejector pin hole diameter, leading to the entry of lubricating fluid or metal debris into the ejector pin hole. Utility Model Content

[0003] The purpose of this utility model is to provide a stamping die for processing hardware parts, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stamping die for processing hardware parts, comprising a hollow lower die and an upper die disposed above it, and further comprising: a connecting rod disposed in the lower die and fixed at its upper end to the upper die, the lower end of the connecting rod being fixedly connected to a movable plate, the upper part of the movable plate being fixedly connected to an ejector rod for ejecting the formed hardware parts, and the forming groove of the lower die having ejector pin holes; Auxiliary components, wherein the auxiliary components are disposed in the lower mold; The auxiliary components include a telescopic shell installed in the lower mold to keep the ejector rod in a stable vertical position and an airbag fitted on the upper end of the ejector rod for dust removal and sealing.

[0005] Preferably, the auxiliary component further includes a channel formed at the center of the top rod axis, and air ports communicating with the telescopic shell and the airbag are respectively formed at both ends of the inner wall of the channel.

[0006] Preferably, the surface of the airbag has multiple upward-facing air vents arranged in a ring array around the top rod.

[0007] Preferably, the telescopic shell is a three-section design, with the diameter of the three sections decreasing sequentially from bottom to top, and the three sections nesting together.

[0008] Preferably, a partition is fixedly connected to the middle of the cavity of the lower mold, wherein the lowermost telescopic shell is fixedly connected to the partition, and the inner wall of the uppermost telescopic shell is fixedly connected to the push rod.

[0009] Preferably, the airbag is located inside the pin hole and can seal the pin hole by expanding itself.

[0010] Preferably, the surfaces of the airbag and the telescopic shell are connected to one-way valves. The two one-way valves are used to close when the telescopic shell is extended to prevent the airbag from sucking in external dust and to replenish gas into itself when the telescopic shell is extended.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When the ejector rod extends outward and ejects the formed hardware part, the upper section of the telescopic shell moves upward with the ejector rod, causing the telescopic shell to stretch. The multi-section, tightly fitted telescopic shell ensures that the ejector rod remains vertically ejected, reducing the phenomenon of overall displacement and friction with the ejector hole caused by the ejector rod being subjected to force at the upper end or contacting irregular surfaces of the workpiece. During the return stroke of the telescopic shell, the gas inside is injected into the air bladder, which can then discharge the gas through the upward-angled vent hole. This blows away metal dust and lubricant generated during processing around the ejector pin hole, preventing them from entering the ejector pin hole and accumulating, thus affecting the smoothness of the ejector pin movement. Attached Figure Description

[0012] Figure 1 A three-dimensional structural schematic diagram of the stamping die for hardware processing provided by this utility model; Figure 2 A schematic diagram of the internal structure of the lower mold provided by this utility model; Figure 3 A schematic diagram of the structure of the auxiliary component provided by this utility model; Figure 4 This is a half-sectional schematic diagram of the overall structure of the auxiliary component provided by this utility model.

[0013] In the diagram: 1. Lower mold; 2. Upper mold; 3. Connecting rod; 4. Ejector rod; 5. Partition plate; 6. Auxiliary components; 601. Telescopic shell; 602. Channel; 603. Airbag; 604. Air outlet; 605. Air port; 606. One-way valve; 7. Movable plate; 8. Ejector pin hole. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1 - Figure 4 As shown, a stamping die for processing hardware parts includes a hollow lower die 1 and an upper die 2 disposed above it, and further includes: a connecting rod 3 disposed in the lower die 1 and fixed at its upper end to the upper die 2, a movable plate 7 fixedly connected to the lower end of the connecting rod 3, and an ejector rod 4 fixedly connected to the upper part of the movable plate 7 for ejecting and unloading the formed hardware parts, and ejector pin holes 8 are provided in the forming groove of the lower die 1; After the upper mold 2 is pressed down by the hydraulic system and cooperates with the lower mold 1 to stamp the hardware parts, the formed hardware parts will remain in the forming groove. When the upper mold 2 returns through the hydraulic system, it will pull the connecting rod 3 to make the ejector rod 4 rise, so that it extends from the inside and outside of the ejector pin hole 8 and ejects the hardware parts in the forming groove, thereby forming a stripping operation. Auxiliary component 6 is disposed in the lower mold 1; Among them, the auxiliary component 6 includes a telescopic shell 601 set in the lower mold 1 to keep the ejector rod 4 in a vertical position for stable extension and an airbag 603 sleeved on the upper end of the ejector rod 4 for dust removal and sealing. Please see Figure 3 and Figure 4 As shown, the telescopic shell 601 is a three-section design, with the diameter of the three telescopic shells 601 decreasing sequentially from bottom to top, and the three telescopic shells 601 are nested together; a partition 5 is fixedly connected to the middle of the cavity of the lower mold 1, wherein the lowermost telescopic shell 601 is fixedly connected to the partition 5, and the inner wall of the uppermost telescopic shell 601 is fixedly connected to the top rod 4. When the push rod 4 extends outward, the telescopic shell 601, which was originally in a retracted state, will be stretched by the push rod 4. At this time, the upper telescopic shell 601 pulls the middle section, and the middle section slides in the lower section. Therefore, the three sections of the telescopic shell 601 cooperate with each other, which enables the push rod 4 to rise stably in a vertical posture. When the push rod 4 contacts the hardware, it can reduce the phenomenon that the force-bearing section of the push rod 4 will shift and rub against the ejector hole due to the upper end being stressed or the irregular surface of the workpiece. Please see Figure 4As shown, the auxiliary component 6 also includes a channel 602 opened at the axis of the push rod 4. The two ends of the inner wall of the channel 602 are respectively provided with air ports 605 communicating with the telescopic shell 601 and the airbag 603. The surface of the airbag 603 is provided with multiple air outlets 604 with an upward angle in a ring array with the push rod 4 as the axis. When the push rod 4 pushes out the hardware and stretches the telescopic shell 601, the telescopic shell 601 is under negative pressure. At this time, the one-way valve 606 on the side of the lowest telescopic shell 601 will open, and this one-way valve 606 will draw external gas into the telescopic shell 601. After the ejector rod 4 ejects the hardware, it will return. At this time, the telescopic shell 601 will retract, and the gas inside the retracted shell will enter the channel 602 through the lower air port 605 and be injected into the air bag 603 through the upper air port 605. At this time, the air bag 603 will expand when it is full of gas. When the expansion range reaches the preset value, the gas will be discharged from the air outlet 604, thereby blowing away the metal dust and lubricant generated during processing to the area around the ejector pin hole 8, preventing dust from approaching and entering the ejector pin hole 8 and causing accumulation, which would affect the smoothness of the ejector pin movement. The airbag 603 is located inside the ejector pin hole 8 and can seal the ejector pin hole 8 by its own expansion; At the same time, when the airbag 603 moves to the position of the ejector pin hole 8, the inner wall of the ejector pin hole 8 will fit with the air outlet 604, the air outlet 604 will be blocked, and the remaining gas will continue to enter the airbag 603, causing the airbag 603 to expand to seal the ejector pin hole 8. Both the airbag 603 and the telescopic shell 601 are connected to one-way valves 606. The two one-way valves 606 are used to close when the telescopic shell 601 is extended to prevent the airbag 603 from sucking in external dust and to replenish gas into itself when the telescopic shell 601 is extended. It should be noted that the hydraulic system, upper mold 2, lower mold 1, connecting rod 3 and air bag 603 mentioned above are all relatively mature products in the existing technology. At the same time, the hydraulic system can be powered by mains power or by the built-in power supply. The specific power supply method can be selected according to the situation, which will not be elaborated here. Working principle: When the ejector rod 4 extends outward and ejects the formed hardware, the upper section of the telescopic shell 601 moves upward with the ejector rod 4, causing the telescopic shell 601 to stretch. The multi-section, tightly fitted telescopic shell 601 ensures that the ejector rod 4 is ejected vertically, reducing the phenomenon of overall displacement and friction with the ejection hole caused by the ejector rod 4 being subjected to force at the upper end or contacting the irregular surface of the workpiece. When the telescopic shell 601 returns, the gas inside it is injected into the air bag 603, which can discharge the gas through the upward-angled air outlet 604. This can blow away the metal dust and lubricant generated during processing to the area around the ejector pin hole 8, preventing them from entering the ejector pin hole 8 and accumulating, thus affecting the smoothness of the ejector pin movement.

[0016] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] 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 stamping die for processing hardware parts, comprising a hollow lower die (1) and an upper die (2) disposed above it, characterized in that, Also includes: A connecting rod (3) is set in the lower mold (1) and its upper end is fixed to the upper mold (2). The lower end of the connecting rod (3) is fixedly connected to a movable plate (7). The upper part of the movable plate (7) is fixedly connected to a push rod (4) for ejecting the molded hardware parts. The molding groove of the lower mold (1) is provided with a push pin hole (8). Auxiliary component (6), which is disposed in the lower mold (1); The auxiliary component (6) includes a telescopic shell (601) set in the lower mold (1) to keep the ejector rod (4) in a vertical position for stable extension and a gasbag (603) sleeved on the upper end of the ejector rod (4) for dust removal and sealing.

2. The stamping die for hardware processing according to claim 1, characterized in that: The auxiliary component (6) also includes a channel (602) opened at the axis of the top rod (4), and air ports (605) communicating with the telescopic shell (601) and the airbag (603) are respectively opened at both ends of the inner wall of the channel (602).

3. The stamping die for hardware processing according to claim 1, characterized in that: The surface of the airbag (603) has multiple upward-facing air vents (604) arranged in a ring array with the top rod (4) as the axis.

4. A stamping die for processing hardware parts according to claim 1, characterized in that: The telescopic shell (601) is a three-section design, with the diameter of the three telescopic shells (601) decreasing sequentially from bottom to top, and the three telescopic shells (601) are nested together.

5. A stamping die for processing hardware parts according to claim 1, characterized in that: The cavity of the lower mold (1) is fixedly connected to a partition plate (5), wherein the lowermost telescopic shell (601) is fixedly connected to the partition plate (5), and the inner wall of the uppermost telescopic shell (601) is fixedly connected to the top rod (4).

6. A stamping die for processing hardware parts according to claim 1, characterized in that: The airbag (603) is located inside the pin hole (8) and can seal the pin hole (8) by expanding itself.

7. A stamping die for processing hardware parts according to claim 1, characterized in that: Both the airbag (603) and the telescopic shell (601) are connected to one-way valves (606). The two one-way valves (606) are used to close when the telescopic shell (601) is extended to prevent the airbag (603) from sucking in external dust and to replenish gas into itself when the telescopic shell (601) is extended.

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