Steel sleeve combination of connecting rod

Abstract

According to the technical scheme, the steel sleeve combination is characterized by comprising a cylindrical sleeve body, an oil guide ring groove is formed in the end face of the sleeve body in the circumferential direction, an oil inlet hole is formed in the bottom of the oil guide ring groove, an oil outlet hole is formed in the inner wall of the sleeve body, and the oil inlet hole and the oil outlet hole are communicated with each other; a filter screen covering the oil inlet hole is arranged at the bottom of the oil guide ring groove, and the filter screen is in a circular ring shape; the pressing ring fixed to the connecting rod is pressed at the end of the sleeve body, the pressing ring is provided with the oil injection nozzle facing the filter screen, lubricating oil added into the steel sleeve is effectively filtered, and abrasion of impurities in the lubricating oil to the steel sleeve and the guide rod is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steel sleeve combination, more specifically, it relates to a steel sleeve combination of connecting rod. BACKGROUND

[0002] The injection molding machine connecting rod bears large friction in the working process, so a good lubrication system is needed to reduce wear. In the traditional lubrication mode, the connecting rod needs to be installed with a steel sleeve in the injection molding machine, so that the guide rod can slide in the steel sleeve, and the steel sleeve can be added with lubricating oil, and the sleeve can be provided with oil holes for lubrication.

[0003] The existing steel sleeve does not have filtering capacity for the injected lubricating oil, and impurities in the lubricating oil can easily cause the guide rod in the connecting rod to move, accelerating the wear of the steel sleeve and the guide rod. SUMMARY

[0004] The utility model discloses a steel sleeve combination of connecting rod, which can effectively filter the lubricating oil added to the steel sleeve, reduce the impurities in the lubricating oil, and reduce the wear of the steel sleeve and the guide rod, so that the lubrication effect is more excellent.

[0005] The above technical purpose of the utility model is achieved by the following technical scheme:

[0006] A steel sleeve combination of connecting rod, comprising a cylindrical sleeve body, an oil guide ring groove is formed in the end face of the sleeve body along the circumferential direction, an oil inlet hole is formed in the bottom of the oil guide ring groove, an oil outlet hole is formed in the inner wall of the sleeve body, and the oil inlet hole and the oil outlet hole are in communication with each other; a filter screen is arranged at the bottom of the oil guide ring groove to cover the oil inlet hole, and the filter screen is in the form of a circular ring; a compression ring is compressed and fixed on the sleeve body end portion and the connecting rod, and the compression ring is provided with an oil injection nozzle for adding oil to the filter screen.

[0007] Preferably, an elastic ring is arranged in the oil guide ring groove to compress the edge of the filter screen.

[0008] Preferably, the filter screen is a magnetic screen.

[0009] Preferably, a plurality of outer oil guide grooves are formed in the outer wall of the sleeve body and are in communication with each other, and the outer oil guide grooves are in communication with the oil inlet hole and the oil outlet hole.

[0010] Preferably, the oil inlet hole has a plurality of oil inlet holes, and the plurality of oil inlet holes are uniformly arranged along the circumferential direction of the oil guide ring groove.

[0011] Preferably, a screw is arranged between the compression ring and the connecting rod.

[0012] Preferably, the compression ring is provided with a positioning ring, and the inner wall of the positioning ring is in positioning cooperation with the inner wall of the oil guide ring groove.

[0013] In summary, the utility model has at least one of the following beneficial effects:

[0014] (1) the end of the steel sleeve is injected with lubricating oil by the pressure ring, and the filter screen effectively filters the lubricating oil added to the steel sleeve, reducing impurities in the lubricating oil that wear the steel sleeve and the guide rod;

[0015] After the pressure ring is loosened, the filter screen can be removed from the steel sleeve, and the impurities on the filter screen can be cleaned, increasing the service life of the filter screen.

[0016] (2) fine iron powder in the lubricating oil is magnetically attracted, reducing the wear of the steel sleeve and the guide rod caused by fine iron powder.

[0017] (3) the oil hole has multiple oil inlet holes evenly arranged along the circumferential direction of the oil guide ring groove, ensuring that the lubricating oil can uniformly enter the inside of the sleeve body, avoiding local insufficient lubrication, and making the injection molding machine connecting rod sleeve lubrication effect better. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is an exploded view of the steel sleeve and the pressure ring in the embodiment;

[0019] Figure 2 is a top view of the elastic ring and the filter screen installed in the steel sleeve in the embodiment;

[0020] Figure 3 is a partial sectional view of the steel sleeve installed in the connecting rod in the embodiment;

[0021] Figure 4 is an enlarged view of A in Figure 3

[0022] Figure 5 is an exploded view of the connecting rod, the steel sleeve, the pressure ring and the guide rod in the embodiment.

[0023] In the drawings:

[0024] 1, sleeve body;

[0025] 21, oil inlet hole; 22, outer oil guide groove; 23, oil outlet hole;

[0026] 31, oil guide ring groove; 32, filter screen; 33, elastic ring;

[0027] 4, pressure ring; 41, positioning ring;

[0028] 5, screw;

[0029] 6, oil injection nozzle;

[0030] 7, connecting rod;

[0031] 8, guide rod. DETAILED DESCRIPTION

[0032] The utility model will be further described in detail below in combination with the drawings.​

[0033] Embodiment 1, a steel sleeve combination of a connecting rod, referring to Figure 1 , including a cylindrical sleeve body 1, the sleeve body 1 is made of steel material, has high strength and wear resistance. The end face of the sleeve body 1 is provided with an oil guide ring groove 31 in the circumferential direction, the oil guide ring groove 31 is a circular groove, and the slot opening faces outward.

[0034] The bottom of the oil guide ring groove 31 is provided with an oil inlet hole 21, and there are eight oil inlet holes 21, which are uniformly arranged along the circumferential direction of the oil guide ring groove 31.

[0035] The inner wall of the sleeve body 1 is provided with a plurality of oil outlet holes 23, and the oil outlet holes 23 are arranged through the side of the sleeve body 1; in other embodiments, the oil outlet holes 23 can be provided with graphite.

[0036] The outer wall of the sleeve body 1 is provided with a plurality of outer oil guide grooves 22 which are communicated with each other, the outer oil guide grooves 22 are communicated with the oil inlet hole 21 and the oil outlet hole 23, and form a lubricating oil path.

[0037] The outer oil guide groove 22 includes a circular groove and a straight groove provided on the outer wall of the sleeve body 1, the straight groove is arranged along the long direction of the sleeve body 1, and the circular groove and the straight groove are staggered to realize the communication between the two groove bodies;

[0038] The end of the straight groove in the outer oil guide groove 22 is communicated with the oil inlet hole 21, and the bottom of the straight groove is provided with an oil outlet hole 23;

[0039] The circular groove in the outer oil guide groove 22 is communicated with the oil outlet hole 23;

[0040] Therefore, after the oil enters the oil guide ring groove 31, it successively passes through the oil inlet hole 21, the outer oil guide groove 22 and the oil outlet hole 23, and then enters the inner wall of the sleeve body 1 along the oil outlet hole 23 to realize the lubrication effect.

[0041] The bottom of the oil guide ring groove 31 is provided with a filter screen 32 covering the oil inlet hole 21, the filter screen 32 is circular, and is used for filtering impurities in the lubricating oil. The filter screen 32 is a metal screen;

[0042] Referring to Figure 2 , the filter screen 32 and the oil guide ring groove 31 are dimensionally matched, and the filter screen 32 realizes the shielding and filtering effect on the oil inlet hole 21 on the oil guide ring groove 31.

[0043] In order to stabilize the filter screen 32 in the oil guide ring groove 31, an elastic ring 33 is sleeved in the oil guide ring groove 31 to press the edge of the filter screen 32.

[0044] The elastic ring 33 is a rubber ring, the elastic ring 33 is tightly sleeved on the inner ring wall of the oil guide ring groove 31, and the elastic ring 33 has a shielding effect on the filter screen 32, which reduces the loosening of the filter screen 32.

[0045] The elastic ring 33 is sleeved on the edge of the pressing filter screen 32 in the oil guide ring groove 31, which ensures that the filter screen 32 is tightly attached to the oil guide ring groove 31, prevents the lubricating oil from bypassing the filter screen 32 and directly entering the oil inlet hole 21, and improves the filtering effect.

[0046] With reference to Figure 1 , Figure 3 , Figure 4 and Figure 5 , the end of the sleeve body 1 is pressed and fixed with the pressing ring 4 of the connecting rod 7, and the pressing ring 4 is provided with the oil injection nozzle 6 facing the filter screen 32; the user injects lubricating oil into the oil guide ring groove 31 through the oil injection nozzle 6.

[0047] The pressing ring 4 is a metal ring, which covers the end face of the sleeve body 1 and blocks the slot of the oil guide ring groove 31, and the upper oil injection nozzle 6 of the pressing ring 4 injects oil into the oil guide ring groove 31;

[0048] When the sleeve body 1 and the pressing ring 4 are installed on the connecting rod 7, the pressing ring 4 and the connecting rod 7 are fixed through the screw 5.

[0049] The working principle is:

[0050] The lubricating oil is injected into the oil guide ring groove 31 through the oil injection nozzle 6 of the pressing ring 4, filtered through the filter screen 32, enters the inside of the sleeve body 1 through the oil inlet hole 21, and then flows out through the oil outlet hole 23, forming a circulating lubrication system. The design of the outer oil guide groove 22 enables the lubricating oil to be evenly distributed on the outer wall of the sleeve body 1, further improving the lubrication effect.

[0051] The guide rod 8 is arranged in the connecting rod 7 provided with the steel sleeve, and the lubrication effect of the guide rod 8 is improved due to the filtering effect of the lubricating oil.

[0052] And for horizontal injection molding machine, the steel sleeve combination can be regularly maintained, the process is to open the pressing ring 4, then take out the filter screen 32, clean the impurities on the filter screen 32, and then put it back on the steel sleeve; in this way, the cleaning work of the filter screen 32 can be completed without taking out the steel sleeve, which is also the advantage of the scheme.

[0053] Embodiment 2, a steel sleeve combination of a connecting rod, which is different from embodiment 1, with reference to Figure 4 , the pressing ring 4 is provided with a positioning ring 41, the positioning ring 41 is a circular ring, and the inner wall of the positioning ring 41 is positioned and matched with the inner wall of the oil guide ring groove 31. The pressing ring 4 is provided with the positioning ring 41, the inner wall of the positioning ring 41 is positioned and matched with the inner wall of the oil guide ring groove 31, which ensures the accurate positioning of the pressing ring 4 and the sleeve body 1, and avoids installation errors.

[0054] Embodiment 3, a steel sleeve combination of a connecting rod, which is different from embodiment 1 or embodiment 2, with reference to Figure 4The filter screen 32 is a magnetic screen. The magnetic filter screen 32 can adsorb metal scraps in the lubricating oil, prevents impurities from entering the lubricating system, and ensures the cleanliness of the lubricating oil. The steel sleeve assembly of the connecting rod can be used in an injection molding machine device, the steel sleeve is connected with the body of the injection molding machine, and the connecting rod slides in the steel sleeve.

[0055] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A steel bushing assembly for a connecting rod, comprising a cylindrical bushing body (1), characterized in that: The end surface of the sleeve body (1) is provided with an oil guide ring groove (31) along the circumferential direction, the bottom of the oil guide ring groove (31) is provided with an oil inlet hole (21), the inner wall of the sleeve body (1) is provided with an oil outlet hole (23), and the oil inlet hole (21) and the oil outlet hole (23) are communicated with each other; The bottom of the oil guide ring groove (31) is provided with a filter screen (32) covering the oil inlet hole (21), and the filter screen (32) is in the shape of a circular ring; The end of the sleeve body (1) is pressed and combined with a pressing ring (4) fixed on a connecting rod, and the pressing ring (4) is provided with an oil injection nozzle (6) for adding oil to the filter screen (32).

2. The steel bushing combination of claim 1 wherein: The oil guide ring groove (31) is sleeved with an elastic ring (33) pressing the edge of the filter screen (32).

3. The steel bushing combination of claim 1 wherein: The filter screen (32) is a magnetic screen.

4. The steel bushing combination of claim 1 wherein: The outer wall of the sleeve body (1) is provided with a plurality of outer oil guide grooves (22) communicated with each other, and the outer oil guide grooves (22) are communicated with the oil inlet hole (21) and the oil outlet hole (23).

5. The steel bushing combination of claim 1 wherein: The oil inlet hole (21) has a plurality of oil inlet holes (21), and the plurality of oil inlet holes (21) are uniformly arranged along the circumferential direction of the oil guide ring groove (31).

6. The steel bushing combination of claim 1 wherein: Screws (5) are arranged between the pressing ring (4) and the connecting rod.

7. The steel bushing combination of claim 6 wherein: The pressing ring (4) is provided with a positioning ring (41), and the inner wall of the positioning ring (41) is positioned and matched with the inner wall of the oil guide ring groove (31).

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