A self-lubricating guide post composite mold

Abstract

This utility model discloses a self-lubricating guide post composite mold, relating to the field of guide post mold technology. The utility model includes a base plate, a guide sleeve fixedly connected to one side of the top of the base plate, an oil storage cavity between the guide sleeve and the base plate, an oil injection plug installed on one side of the oil storage cavity, a flow control block installed on one side of the guide sleeve to the oil storage cavity, a partition plate installed on one side of the flow control block, a guide rod slidably connected to the guide sleeve on one side of the partition plate, and an oil film ring between the guide sleeve and the guide rod. This utility model, by setting an oil storage cavity at one end of the guide post, installing a flow control block inside the guide sleeve adjacent to the oil storage cavity, installing a partition plate with oil passage holes between the flow control block and the guide rod, and setting an oil film ring with a buffer cavity at the bottom of the partition plate, allows the guide post to form a uniform oil film ring layer between the guide rod and the guide sleeve. Furthermore, the large flow resistance formed by the capillary-shaped oil seepage holes of the flow control block prevents oil backflow, thus achieving an automatic inertial conveying function for seepage oil.

Description

Technical Field

[0001] This utility model belongs to the field of guide post mold technology, specifically relating to a self-lubricating guide post composite mold. Background Technology

[0002] A guide pillar is a mold accessory that works in conjunction with a guide bushing to guide the mold during its movement. To ensure the accuracy of the mold's movement, the clearance between the guide pillar and the guide bushing is very small, typically not exceeding 0.05 mm.

[0003] The patent specification with publication number CN219837062U discloses a self-lubricating mold guide pillar structure and mold, including a guide pillar body, wherein a guide sleeve is sleeved on the outer side of the guide pillar body; a mounting seat is provided on the outer side of the guide sleeve, wherein a liquid filling component is provided above the mounting seat; annular grooves are respectively opened on the upper and lower sides of the inner wall of the guide sleeve, wherein a self-permeable silicone sealing ring is provided in each annular groove; a liquid delivery channel is opened in the guide sleeve, wherein the liquid inlet end of the liquid delivery channel is connected to the liquid filling component; and the liquid outlet end of the liquid delivery channel is connected to the annular groove.

[0004] This guide post mold uses a self-permeable silicone sealing ring between the guide post body and the guide sleeve. A liquid filling component is installed on the side wall of the guide sleeve. A piston pusher drives a pressing plate to deliver lubricant from the storage chamber to the annular groove through a liquid delivery channel. The self-permeable silicone sealing ring absorbs the lubricant and supplies it to the surface of the guide post body during use, reducing friction. However, this design has drawbacks. The liquid filling component is installed on one side of the guide post body, requiring the lubricant to enter the gap between the guide post and the guide sleeve through the silicone ring. This results in uneven lubrication because the self-permeable silicone cannot evenly permeate the lubricant circumferentially into the guide post's circumferential gap. The amount of oil seeping closer to the liquid filling component is significantly higher than on the side farther away. Furthermore, the high-speed extension and retraction of the guide post and guide sleeve generates a large amount of heat, and the silicone's poor temperature resistance can lead to high-temperature deformation and damage with prolonged use.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] The purpose of this utility model is to provide a self-lubricating guide post composite mold. The technical problem to be solved is as follows: the existing self-lubricating guide post molds have the problems of uneven distribution of lubricating oil and short service life.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A self-lubricating guide post composite mold includes a base plate, a guide sleeve fixedly connected to one side of the top of the base plate, an oil storage cavity provided between the guide sleeve and the base plate, an oil injection plug installed on one side of the oil storage cavity, a flow control block installed on one side of the guide sleeve and a partition plate provided on one side of the flow control block, a guide rod slidably connected to the guide sleeve on one side of the partition plate, and an oil film ring provided between the guide sleeve and the guide rod. The flow control block is used to uniformly deliver lubricating oil to the circumferential oil film ring.

[0009] As a further embodiment of this utility model: multiple bolts are fixedly connected between the base plate and the top of the guide sleeve, and the oil injection plug has a built-in sealing ring.

[0010] As a further aspect of this utility model: the flow control block is made of sintered metal and is uniformly provided with multiple oil seepage holes, the diameter of the oil seepage holes is about 20-40 micrometers, and the number density of the holes is 30-50 holes per square centimeter.

[0011] As a further embodiment of this utility model: the partition plate is uniformly provided with a plurality of oil passage holes, the diameter of which is 1-2 mm.

[0012] As a further embodiment of this utility model: a buffer cavity is provided between one side of the partition and the inner wall of the guide sleeve, the buffer cavity is connected to the oil film ring, and the thickness of the oil film ring is 10-30 micrometers.

[0013] As a further embodiment of this utility model: the adjacent sides of the inner side of the guide sleeve and the outer side of the guide rod are mutually compatible regular polygons.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting an oil storage chamber at one end of the guide post and sealing it with an oil plug, and installing a flow control block adjacent to the oil storage chamber in the guide sleeve, and installing a baffle with oil passage holes between the flow control block and the guide rod, and setting an oil film ring with a buffer chamber at the bottom of the baffle on the guide sleeve and the guide rod, the impact force brought by the guide rod impact will cause the lubricating oil to pass from the oil storage chamber through the flow control plate, and finally be evenly delivered to the ring surface of the oil film ring through the buffer chamber. Its technical advantage is that it can form a uniform oil film ring layer between the guide rod and the guide sleeve, improve the wear resistance of the guide post during extension and retraction impact, and the wear resistance effect is more uniform. Furthermore, the huge flow resistance formed by the capillary oil seepage holes of the flow control block can be used to prevent the backflow of seepage oil, so as to realize the automatic inertial delivery of seepage oil without the need for a separate lubricating oil pushing structure.

[0016] 2. The flow control block, made by metal powder sintering process, has the ability to independently transport lubricating oil, and can also avoid the impact of high temperature on the stability of the flow control block during high-speed impact. Combined with the protective function of the internal fixed connection baffle of the guide sleeve, it effectively extends the service life of the guide post. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a half-sectional view of the present invention;

[0020] Figure 3 This is a partial exploded view of the flow control block of this utility model;

[0021] Figure 4 This is a utility model Figure 2 Enlarged detail view of point A in the middle;

[0022] Figure 5 This is a utility model Figure 4 A magnified view of the details at point B in the middle.

[0023] In the diagram: 1. Base plate; 2. Guide sleeve; 3. Oil reservoir; 4. Oil injection plug; 5. Flow control block; 6. Baffle plate; 7. Guide rod; 8. Oil film ring; 9. Collar ring; 10. Oil seepage hole; 11. Oil passage hole; 12. Buffer chamber. Detailed Implementation

[0024] 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 scope of protection of the present utility model.

[0025] like Figures 1 to 5 As shown, a self-lubricating guide post composite mold includes a base plate 1. A guide sleeve 2 is fixedly connected to one side of the top of the base plate 1. An oil storage cavity 3 is provided between the guide sleeve 2 and the base plate 1. An oil injection plug 4 is installed on one side of the oil storage cavity 3. A flow control block 5 is installed on one side of the oil storage cavity 3 on the guide sleeve 2. The flow control block 5 is used to uniformly penetrate lubricating oil. A partition 6 is provided on one side of the flow control block 5. A guide rod 7 is slidably connected to the bottom of the partition 6 on the guide sleeve 2. An oil film ring 8 is provided between the guide sleeve 2 and the guide rod 7. The flow control block 5 is used to uniformly deliver lubricating oil to the circumferential oil film ring 8.

[0026] It should be noted that the top of the base plate 1 and the guide sleeve 2 are fixedly connected by six bolts with sealing rings. The oil plug 4 also has a sealing ring to seal the oil storage chamber 3. It is opened when lubricating oil is added. The purpose is to ensure that when the guide rod 7 and the guide sleeve 2 are subjected to impact and extension, the impact pressure will only deliver the lubricating oil in the oil storage chamber 3 to the oil film ring 8, avoiding pressure relief points in other locations. The guide sleeve 2 is fixedly connected to the middle of the collar 9, which is used to insert it into the guide sleeve 2 and abut against the partition plate 6 before installing the base plate 1. Then, the flow control block 5 is inserted into the collar 9.

[0027] The flow control block 5 is made of sintered metal and is uniformly provided with a large number of oil seepage holes 10. The pore diameter of the oil seepage holes 10 is approximately 30 micrometers, and the density is 40 pores per square centimeter. Specifically, the sintered metal material includes, but is not limited to, bronze and stainless steel. It is manufactured by sintering using powder metallurgy technology. The pore size and connectivity during sintering can be controlled. The purpose is that the porous metal material has the characteristics of high strength and high temperature resistance, thereby adapting to the high temperature state of the guide rod 7 during high-speed telescopic impact, thus extending the service life of the flow control block 5 and avoiding... This avoids the problem of silicone being easily damaged during oil seepage in existing technologies. In addition, since the diameter of each seepage hole 10 on the surface of the flow control block 5 is small and has a capillary-like structure, the lubricating oil will generate a flow resistance of more than 2MPa when subjected to high-speed impact in the micropores. That is, the impact force of the impact will be absorbed by the damping generated by the high flow resistance, and there will be no problem of rapid consumption of lubricating oil. Under this permeation efficiency, the daily oil seepage amount does not exceed 0.1 ml, and this consumption process relies on the high-speed impact force of the guide rod 7, without the need for an additional liquid pushing structure for active liquid pushing as in existing technologies.

[0028] like Figure 3 As shown, the baffle 6 is made of alloy steel and has oil passage holes 11 evenly distributed throughout it. The diameter of the oil passage holes 11 is about 1 mm, which is much larger than the diameter of the oil seepage holes 10. That is, by setting a fixed connection between the baffle 6 and the guide rod 7, the direct impact on the flow control block 5 is avoided. At the same time, the oil passage holes 11 with a larger diameter are set on the surface of the baffle 6 to facilitate the transmission of oil seepage.

[0029] like Figure 4 and Figure 5 As shown, a buffer cavity 12 is provided between the bottom side of the partition 6 and the inside of the guide sleeve 2, and the buffer cavity 12 is connected to the oil film ring 8; the thickness of the oil film ring 8 is 20 micrometers.

[0030] It should be noted that, due to the significant flow resistance of the leaking oil when passing through the flow control block 5, it will not flow back into the oil storage chamber 3 during the cyclic impact process. Instead, it will pass through the baffle 6 to the buffer chamber 12 of the inner ring of the guide sleeve 2, and then fall from the circumferential buffer chamber 12 into the circumferential oil film ring 8. This achieves a uniform filling effect of lubricating oil on the circumferential oil film ring 8. The uniformly formed oil film will lubricate the extension and contraction friction of the guide rod 7 and the guide sleeve 2, thereby extending the service life of the guide post. In addition, the adjacent sides of the inner side of the guide sleeve 2 and the outer side of the guide rod 7 are mutually compatible regular decagons to limit the extension and contraction process, avoid the generation of lateral torque, improve the stability of the guide post, and extend its service life.

[0031] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A self-lubricating guide pillar composite mold, comprising a bottom plate (1), a guide sleeve (2) is fixedly connected to one side of the top end of the bottom plate (1), characterized in that, An oil storage cavity (3) is provided between the guide sleeve (2) and the base plate (1). An oil injection plug (4) is installed on one side of the oil storage cavity (3). A flow control block (5) is installed on one side of the guide sleeve (2) and a partition (6) is provided on one side of the flow control block (5). A guide rod (7) is slidably connected to the guide sleeve (2) on one side of the partition (6). An oil film ring (8) is provided between the guide sleeve (2) and the guide rod (7). The flow control block (5) is used to uniformly deliver lubricating oil to the circumferential oil film ring (8).

2. The self-lubricating guide pillar composite mold according to claim 1, wherein, Multiple bolts are fixedly connected between the top of the base plate (1) and the top of the guide sleeve (2), and the oil filling plug (4) has a built-in sealing ring.

3. The self-lubricating guide pillar composite mold according to claim 1, wherein, The flow control block (5) is made of sintered metal and is uniformly provided with a plurality of oil seepage holes (10). The diameter of the oil seepage holes (10) is about 20-40 micrometers and the number of holes is 30-50 holes per square centimeter.

4. The self-lubricating guide pillar composite mold according to claim 1, wherein, The partition (6) is uniformly provided with a plurality of oil passage holes (11), the diameter of which is 1-2 mm.

5. The self-lubricating guide pillar composite mold according to claim 1, wherein, A buffer cavity (12) is provided between one side of the partition (6) and the inner wall of the guide sleeve (2). The buffer cavity (12) is connected to the oil film ring (8), and the thickness of the oil film ring (8) is 10-30 micrometers.

6. The self-lubricating guide pillar composite mold according to claim 1, wherein, The inner side of the guide sleeve (2) and the adjacent sides of the outer side of the guide rod (7) are mutually compatible regular polygons.

Images