Ejector rod structure of cold header
By installing a lubrication device and a buffer ring on the push rod of the cold heading machine, the problem of wear on the push rod surface is solved, achieving lubrication and protection of the push rod and extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-17
AI Technical Summary
After prolonged use, the surface of the cold heading machine's push rod becomes dry, leading to wear and shortening its service life.
A lubrication device is installed on the surface of the push rod, including components such as a lubrication frame, a slide bar, a sponge block, and a buffer ring. The push rod is lubricated by the spraying and uniform application of lubricating fluid, and the buffer ring prevents direct contact to protect the push rod.
It effectively extends the service life of the push rod, avoids wear on the push rod surface, and achieves all-round lubrication and buffer protection.
Smart Images
Figure CN223997231U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of cold heading machine push rod structure, and in particular to a cold heading machine push rod structure. Background Technology
[0002] Cold heading machines are specialized equipment primarily used for the mass production of fasteners such as nuts, bolts, and nails. The push rod is used in conjunction with the template to perform upsetting and impact forming of the fasteners.
[0003] The inventors discovered during routine use of the ejector pins of a cold heading machine that after prolonged use of the ejector pins to eject fasteners, the surface of the ejector pins would become dry, leading to wear and a shortened service life, thus causing problems. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a cold heading machine push rod structure.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cold heading machine push rod structure, including a hydraulic press, a push rod is provided inside the hydraulic press, a lubrication device is provided on the surface of the push rod, a buffer device is provided at one end of the push rod, the lubrication device includes a lubrication frame fixedly connected to one end of the hydraulic press, an extrusion plate is slidably connected inside the lubrication frame, a slide rod is fixedly connected to the top of the extrusion plate, a circular plate is fixedly connected to one end of the slide rod, and a circular groove is provided on the side of the lubrication frame.
[0006] The effect achieved by the above components is as follows: under the action of the extrusion plate, the lubricating fluid inside the lubrication frame is sprayed out, thereby lubricating the ejector rod. When the ejector rod pushes out the fastener, the ejector rod is placed into the fixed mold of the cold heading machine, and the hydraulic press is started, causing the ejector rod to rise, thereby achieving the ejection effect.
[0007] Preferably, a first spring is sleeved on the surface of the slide bar, and the two ends of the first spring are fixedly connected to the inner wall of the lubrication frame at the top of the extrusion plate.
[0008] The effect achieved by the above components is that, under the action of the first spring, when the push rod and the slide rod separate, the slide rod can be reset, thereby achieving the reset function.
[0009] Preferably, a sponge block is fixedly connected to the side of the lubrication frame, and one side of the sponge block is in contact with the surface of the top rod.
[0010] The effect achieved by the above components is that, under the action of the sponge block, the lubricant can penetrate the sponge block, thereby lubricating the push rod in all directions.
[0011] Preferably, a round strip, which is a rubber strip, is fixedly connected to the side of the extrusion plate.
[0012] The effect achieved by the above components is that, under the action of the round bar, the lubricant will not seep out from the gap between the extrusion plate and the lubrication frame, thereby achieving a sealing effect.
[0013] Preferably, a pad, which is a rubber plate, is fixedly connected to the top of the circular plate.
[0014] The aforementioned components achieve the following effects: Under the action of the pad, the push rod will not directly contact the circular plate, thus avoiding rigid contact. When lubrication of the push rod is required, after the push rod contacts the circular plate, the pad prevents direct contact, thus avoiding rigid contact. This causes the sliding rod to be squeezed into the lubrication frame, squeezing out lubricant onto the surface of the sponge block. This allows the lubricant to be evenly applied to the surface of the sponge block, providing comprehensive lubrication to the push rod's surface. When the push rod separates from the circular plate, the first spring allows the sliding rod to reset, achieving the resetting function and thus the lubrication effect.
[0015] Preferably, the buffer device includes a buffer ring fixedly connected to one end of the top rod, and the buffer ring is a rubber ring.
[0016] The effect achieved by the above components is that, under the action of the buffer ring, the push rod will not directly contact the fastener, thereby achieving a buffering effect.
[0017] Preferably, a telescopic rod is fixedly connected inside the buffer ring, and a second spring is sleeved on the surface of the telescopic rod. The two ends of the second spring are respectively fixedly connected to the inner wall of the buffer ring at one end of the top rod.
[0018] The effect achieved by the above components is that, under the action of the telescopic rod and the second spring, the buffer ring can be quickly reset, thereby achieving the reset function.
[0019] Preferably, one end of the buffer ring is fixedly connected to an iron sheet.
[0020] The effects achieved by the above components are as follows: under the action of the iron plate, the buffer ring will not directly contact the fastener, thus avoiding damage to the buffer ring; when the push rod needs to be used, under the action of the buffer ring, the push rod will not directly contact the fastener, thereby achieving a buffering effect; under the action of the iron plate, the buffer ring will not directly contact the fastener, thus avoiding damage to the buffer ring; under the action of the telescopic rod and the second spring, the buffer ring can quickly reset, thus achieving a reset effect, thereby achieving a buffering effect.
[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0022] In this invention, by setting a lubrication device, when the push rod needs to be lubricated, after the push rod contacts the circular plate, the pad prevents the push rod from directly contacting the circular plate, thus avoiding rigid contact. This causes the sliding rod to be squeezed into the interior of the lubrication frame, squeezing out the lubricant onto the surface of the sponge block. This allows the lubricant to be evenly applied to the surface of the sponge block, thus lubricating the surface of the push rod in all directions. When the push rod separates from the circular plate, the first spring causes the sliding rod to reset, thus achieving the resetting function and lubrication. This solves the problem of wear caused by the surface of the push rod drying out due to prolonged extension and retraction. Attached Figure Description
[0023] Figure 1 This utility model provides a three-dimensional structural diagram of a cold heading machine push rod structure;
[0024] Figure 2 This utility model provides a schematic diagram of a lubrication device for a cold heading machine top rod structure;
[0025] Figure 3 This utility model presents a schematic diagram of a buffer device for a cold heading machine top rod structure.
[0026] Legend: 1. Hydraulic press; 2. Lubrication device; 21. Lubrication frame; 22. Slide rod; 23. First spring; 24. Extrusion plate; 25. Sponge block; 26. Circular plate; 27. Pad plate; 3. Buffer device; 31. Buffer ring; 32. Iron sheet; 33. Telescopic rod; 34. Second spring; 4. Top rod. Detailed Implementation
[0027] Example 1, as Figure 1-3 As shown, a cold heading machine ejector pin 4 structure includes a hydraulic press 1, an ejector pin 4 is provided inside the hydraulic press 1, a lubrication device 2 is provided on the surface of the ejector pin 4, and a buffer device 3 is provided at one end of the ejector pin 4. When the ejector pin 4 ejects the fastener, the ejector pin 4 is placed inside the fixed mold of the cold heading machine, the hydraulic press 1 is started, and the ejector pin 4 rises, thereby achieving the ejection function.
[0028] Reference Figure 2The lubrication device 2 includes a lubrication frame 21 fixedly connected to one end of the hydraulic press 1. An extrusion plate 24 is slidably connected inside the lubrication frame 21. A slide rod 22 is fixedly connected to the top of the extrusion plate 24, and a circular plate 26 is fixedly connected to one end of the slide rod 22. A circular groove is provided on the side of the lubrication frame 21. Under the action of the extrusion plate 24, the lubricating fluid inside the lubrication frame 21 is sprayed out, thereby lubricating the ejector rod 4. When the ejector rod 4 ejects the fastener, it is placed into the fixed mold of the cold heading machine. The hydraulic press 1 is started, causing the ejector rod 4 to rise, thus achieving... The ejector rod 22 is fitted with a first spring 23. Both ends of the first spring 23 are fixedly connected to the top of the extrusion plate 24 and the inner wall of the lubrication frame 21. Under the action of the first spring 23, when the ejector rod 4 separates from the slide rod 22, the slide rod 22 can be reset, thus achieving the reset function. A sponge block 25 is fixedly connected to the side of the lubrication frame 21. One side of the sponge block 25 is in contact with the surface of the ejector rod 4. Under the action of the sponge block 25, the lubricant can penetrate the sponge block 25, thus allowing the ejector rod 4 to be circumferentially coated. For lubrication, a round strip, made of rubber, is fixedly connected to the side of the extrusion plate 24. This strip prevents lubricant from seeping out of the gap between the extrusion plate 24 and the lubrication frame 21, thus achieving a seal. A pad 27, also made of rubber, is fixedly connected to the top of the round plate 26. The pad 27 prevents the push rod 4 from directly contacting the round plate 26, thus avoiding rigid contact. When lubrication of the push rod 4 is required, after the push rod 4 contacts the round plate 26, the pad 27 prevents the push rod 4 from directly contacting the round plate 26. It will not directly contact the circular plate 26, thus avoiding rigid contact. This allows the slide rod 22 to be squeezed into the lubrication frame 21, squeezing out the lubricant onto the surface of the sponge block 25. This allows the lubricant to be evenly applied to the surface of the sponge block 25, thus lubricating the surface of the push rod 4 in all directions. When the push rod 4 separates from the circular plate 26, under the action of the first spring 23, the slide rod 22 can be reset, thus achieving the reset function and the lubrication function.
[0029] Reference Figure 3The buffer device 3 includes a buffer ring 31 fixedly connected to one end of the push rod 4. The buffer ring 31 is a rubber ring. Under the action of the buffer ring 31, the push rod 4 will not directly contact the fastener, thereby achieving the buffering effect. A telescopic rod 33 is fixedly connected inside the buffer ring 31. A second spring 34 is sleeved on the surface of the telescopic rod 33. The two ends of the second spring 34 are respectively fixedly connected to one end of the push rod 4 and the inner wall of the buffer ring 31. Under the action of the telescopic rod 33 and the second spring 34, the buffer ring 31 can quickly return to its original position, thereby achieving the reset effect. One end of the buffer ring 31 is fixed... A fixed iron plate 32 is connected to prevent the buffer ring 31 from directly contacting the fastener, thus avoiding damage to the buffer ring 31. When the push rod 4 needs to be used, the buffer ring 31 prevents the push rod 4 from directly contacting the fastener, thereby achieving a buffering effect. The iron plate 32 prevents the buffer ring 31 from directly contacting the fastener, thus avoiding damage to the buffer ring 31. Under the action of the telescopic rod 33 and the second spring 34, the buffer ring 31 can quickly reset, thus achieving a reset effect, thereby achieving a buffering effect.
[0030] Working principle: When the ejector pin 4 structure of the cold heading machine is required, when the ejector pin 4 ejects the fastener, it is placed inside the fixed mold of the cold heading machine. The hydraulic press 1 is started, causing the ejector pin 4 to rise, thus achieving the ejection function. When the ejector pin 4 needs to be lubricated, after the ejector pin 4 contacts the circular plate 26, the pad 27 prevents the ejector pin 4 from directly contacting the circular plate 26, thus avoiding rigid contact. This causes the slide bar 22 to be squeezed into the interior of the lubrication frame 21, squeezing the lubricant onto the surface of the sponge block 25. This allows the lubricant to be evenly coated on the surface of the sponge block 25, thus ensuring that the surface of the ejector pin 4 is fully lubricated. For lubrication, when the push rod 4 separates from the circular plate 26, under the action of the first spring 23, when the push rod 4 separates from the slide rod 22, the slide rod 22 can be reset, thus achieving the reset function and achieving the lubrication function. When the push rod 4 needs to be used, under the action of the buffer ring 31, the push rod 4 will not directly contact the fastener, thus achieving the buffer function. Under the action of the iron plate 32, the buffer ring 31 will not directly contact the fastener, avoiding the phenomenon of damage to the buffer ring 31. Under the action of the telescopic rod 33 and the second spring 34, the buffer ring 31 can be quickly reset, thus achieving the reset function and achieving the buffer function.
Claims
1. A cold header ejector rod structure, comprising a hydraulic machine (1), the inside of the hydraulic machine (1) is provided with an ejector rod (4), characterized in that: The surface of the ejector rod (4) is provided with a lubricating device (2), one end of the ejector rod (4) is provided with a buffer device (3), the lubricating device (2) comprises a lubricating frame (21) fixedly connected at one end of the hydraulic machine (1), a sliding plate (24) is slidably connected inside the lubricating frame (21), a slide rod (22) is fixedly connected to the upper top of the sliding plate (24), a round plate (26) is fixedly connected to one end of the slide rod (22), and a circular groove is formed in the side surface of the lubricating frame (21).
2. A cold header ejector rod structure as defined in claim 1, wherein: The surface of the slide rod (22) is sleeved with a first spring (23), and the two ends of the first spring (23) are fixedly connected to the upper top of the sliding plate (24) and the inner wall of the lubricating frame (21) respectively.
3. The cold header mandrel structure of claim 2 wherein: The side surface of the lubricating frame (21) is fixedly connected with a sponge block (25), and one side of the sponge block (25) is attached to the surface of the ejector rod (4).
4. The cold header mandrel structure of claim 3 wherein: The side surface of the sliding plate (24) is fixedly connected with a round bar, which is a rubber bar.
5. The cold header ejector rod structure of claim 4, wherein: The upper top of the round plate (26) is fixedly connected with a pad (27), and the pad (27) is a rubber plate.
6. The cold header mandrel structure of claim 5 wherein: The buffer device (3) comprises a buffer ring (31) fixedly connected at one end of the ejector rod (4), and the buffer ring (31) is a rubber ring.
7. The cold header mandrel structure of claim 6 wherein: The inside of the buffer ring (31) is fixedly connected with a telescopic rod (33), the surface of the telescopic rod (33) is sleeved with a second spring (34), and the two ends of the second spring (34) are fixedly connected to one end of the ejector rod (4) and the inner wall of the buffer ring (31) respectively.
8. The cold header mandrel structure of claim 7 wherein: One end of the buffer ring (31) is fixedly connected with an iron sheet (32).