Lubricating matching structure for lock shaft and rotating sleeve of injection molding machine
By setting oil injection holes, oil storage tanks and seals in the lock shaft rotary sleeve structure of the injection molding machine, the problems of lubricating oil leakage and wear are solved, and the uniform distribution and sealing of lubricating oil are achieved, which extends the lubricating age and slows down the lock shaft and Wear of the swivel.
Patent Information
- Application Number
- CN202420278094.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-02-05
AI Technical Summary
The lubricating oil from the traditional lock shaft and the rotary sleeve is prone to seep out, resulting in increased friction and accelerated wear, and external debris enters the mating gap, further accelerating wear.
A lubrication fitting structure of the lock shaft rotary sleeve of the injection molding machine is designed. By setting oil injection holes, inner oil storage tanks and outer oil storage tanks on the rotary sleeves, combining seals and oil storage micropits, lubricating oil reserves and uniform distribution are increased, and lubrication is prevented. Oil leaks and external debris enters.
It significantly extends the lubrication aging, slows down the wear of the lock shaft and the rotary sleeve, maintains the adequacy of lubricating oil, and improves lubrication uniformity and protective effect.
Smart Images
Figure CN222346233U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shaft lock rotating sleeve lubrication, in particular to a shaft lock rotating sleeve lubrication matching structure for an injection molding machine. Background Art
[0002] The crankshaft connecting rod structure is widely used in industrial automation control equipment, such as machine tools, injection molding machines, excavators and other equipment. The crankshaft connecting rod structure can effectively convert the input energy into mechanical movement at the output end. At the same time, it can also change the output torque, change the direction and speed of movement, and achieve precise control of mechanical equipment.
[0003] The application of crankshaft connecting rod structure in injection molding machine can refer to Figure 4 As shown, a mounting seat with grooves is connected to the template of the injection molding machine, a locking shaft is inserted and fixed in each groove, the number of grooves is consistent with the number of cranks, a rotating sleeve is embedded and fixed on the crank, and the rotating sleeve is rotatably mounted on the locking shaft to realize the rotational connection between the crank and the mounting seat.
[0004] In the crankshaft connecting rod structure, the lubrication of the lock shaft and the swivel sleeve is a difficult point. Sufficient lubricating oil needs to be maintained between the lock shaft and the swivel sleeve. The traditional swivel sleeve has an oil filling hole, and the lubricating oil directly enters the fitting gap between the lock shaft and the swivel sleeve through the oil filling hole to reduce the friction between the two. In the frequent circular motion of the traditional structure, the lubricating oil is easy to seep out from the circumferential direction of the lock shaft. The rapid loss of lubricating oil causes wear on the contact surface between the lock shaft and the swivel sleeve, and debris of the base material will enter the fitting gap, further increasing the wear rate of the lock shaft and the swivel sleeve. Utility Model Content
[0005] The utility model aims at the disadvantage that the lubricating oil added between the existing lock shaft and the rotating sleeve will seep out and cause loss, thereby accelerating the wear of the lock shaft and the rotating sleeve, and provides a lubricating matching structure for a lock shaft and a rotating sleeve of an injection molding machine which can delay the wear speed of the lock shaft and the rotating sleeve.
[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:
[0007] A lubrication matching structure of a lock shaft and a rotating sleeve of an injection molding machine comprises a lock shaft and a rotating sleeve. The rotating sleeve is provided with an oil injection hole for injecting lubricating oil into the matching gap between the lock shaft and the rotating sleeve, a first oil storage part for increasing the lubricating oil reserve is provided on the inner wall of the rotating sleeve, a second oil storage part for increasing the lubricating oil reserve and evenly lubricating the lock shaft and the rotating sleeve is provided on the lock shaft, and sealing members are provided at both ends of the inner wall of the rotating sleeve to cooperate with the lock shaft rotation seal to prevent the lubricating oil from leaking out of the matching gap between the lock shaft and the rotating sleeve.
[0008] By adopting the above scheme, the lock shaft and the rotating sleeve are respectively fixed on the mounting seat and the crank when in use. The first oil storage part and the second oil storage part are respectively provided on the rotating sleeve and the lock shaft, both of which have the effect of increasing the lubricating oil reserve. The second oil storage part can also increase the uniformity of the lubricating oil distribution per unit area, and can increase the lubrication uniformity of the fitting clearance between the rotating sleeve and the lock shaft. The seal seals the lubricating oil, which can significantly extend the lubrication time, significantly delay the wear of the rotating sleeve and the lock shaft caused by insufficient lubricating oil, and can also prevent external debris from entering the fitting clearance between the lock shaft and the rotating sleeve.
[0009] Preferably, the first oil storage portion includes an inner oil storage tank which is recessed circumferentially around the rotating sleeve on the inner wall in the middle of the rotating sleeve and an outer oil storage tank which is arranged between the seal and the inner oil storage tank and is close to the seal, and the oil filling hole is connected to the inner oil storage tank.
[0010] By adopting the above scheme, when the lubricating oil enters between the rotating sleeve and the locking shaft from the oil filling hole, it can be stored in the inner oil storage tank and the outer oil storage tank and be blocked between the seals. The lubricating oil can move between the outer oil storage tank and the inner oil storage tank to increase the lubricity of the rotating sleeve and the locking shaft.
[0011] Preferably, at least one inner oil storage tank and / or outer oil storage tank is provided at intervals along the axial direction of the rotating sleeve.
[0012] By adopting the above solution, a corresponding number of inner oil storage tanks and outer oil storage tanks can be set according to demand.
[0013] Preferably, the second oil storage portion includes oil storage micro-pits evenly spaced apart on the lock shaft between the seals.
[0014] By adopting the above scheme, each oil storage micro-pit can store a small amount of lubricating oil, and the oil storage micro-pits are evenly distributed on the lock shaft, which can evenly increase the oil storage capacity per unit area and increase the smoothness of the cooperation between the lock shaft and the rotating sleeve.
[0015] Preferably, the oil storage micro-pits are formed by laser shot blasting or sand blasting.
[0016] By adopting the above scheme, both the laser shot blasting process and the sand blasting process can evenly form oil storage micro-pits on the lock shaft.
[0017] Preferably, a groove is recessed around the circumference of the rotating sleeve at both ends of the inner wall of the rotating sleeve, and the sealing member is a sealing ring elastically interference fit embedded in the groove by the outer ring wall.
[0018] With the above solution, the sealing ring is embedded in the slot for installation. When the rotating sleeve is plugged onto the lock shaft, the sealing ring and the lock shaft are elastically abutted and matched to seal the lubricating oil.
[0019] Preferably, 1 to 4 oil filling holes are evenly spaced around the circumference of the rotating sleeve.
[0020] Preferably, the oil filling hole is connected to the inner oil storage tank or the outer oil storage tank.
[0021] By adopting the above scheme, when the oil filling hole is connected with the inner oil storage tank, the lubricating oil first enters the inner oil storage tank from the oil filling hole and then gradually diffuses until both the outer oil storage tank and the inner oil storage tank are filled with lubricating oil; when the oil filling hole is connected with the outer oil storage tank, the lubricating oil first enters the outer oil storage tank from the oil filling hole and then gradually diffuses until both the outer oil storage tank and the inner oil storage tank are filled with lubricating oil.
[0022] The utility model has remarkable technical effects due to the adoption of the above technical scheme: a corresponding number of rotating sleeves are provided on the lock shaft according to the number of cranks, oil storage micro-pits are evenly arranged at the corresponding rotating sleeves of the lock shaft to increase the storage amount of lubricating oil and the uniformity of lubricating oil distribution, an inner oil storage tank and an outer oil storage tank are arranged in the rotating sleeve to further increase the storage amount of lubricating oil, the lubricating oil can flow between the outer oil storage tank and the inner oil storage tank to increase the matching lubrication between the lock shaft and the rotating sleeve, and a sealing ring is used to seal the lubricating oil in the oil storage micro-pits and the outer oil storage tank and the inner oil storage tank to ensure that there is always sufficient lubricating oil in the matching gap between the lock shaft and the rotating sleeve to maintain the smoothness of the matching between the two. The lubricating matching structure can significantly extend the lubrication time, significantly delay the wear of the rotating sleeve and the lock shaft caused by insufficient lubricating oil, and can also block external debris from entering the matching gap between the lock shaft and the rotating sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is an axonometric view of a lubrication matching structure of a lock shaft rotating sleeve of an injection molding machine of this embodiment;
[0024] Figure 2 This is a partial exploded view of a lubrication matching structure of a lock shaft rotating sleeve of an injection molding machine of this embodiment;
[0025] Figure 3 yes Figure 2 A magnified image of A;
[0026] Figure 4 It is an axonometric diagram of the cooperation between the injection molding machine template and the crankshaft connecting rod mechanism in the prior art.
[0027] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Lock shaft; 2. Rotating sleeve; 3. Oil filling hole; 4. Oil storage pit; 5. Sealing ring; 6. Inner oil storage tank; 7. Outer oil storage tank; 8. Slot; 9. Template; 10. Mounting seat; 11. Groove; 12. Crank; 13. Oil inlet hole. DETAILED DESCRIPTION
[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] Example
[0030] A lubrication matching structure for a locking shaft rotating sleeve of an injection molding machine, referring to Figure 1-Figure 2 As shown, it includes a lock shaft 1 and at least one rotating sleeve 2 arranged on the lock shaft 1. In this embodiment, two rotating sleeves 2 are provided. The rotating sleeve 2 is provided with oil injection holes 3 for injecting lubricating oil into the matching gap between the lock shaft 1 and the rotating sleeve 2. There are 1 to 4 oil injection holes 3 evenly spaced around the circumference of the rotating sleeve 2. In this embodiment, three oil injection holes 3 are provided. A first oil storage part for increasing the lubricating oil reserve is provided on the inner wall of the rotating sleeve 2. A second oil storage part for increasing the lubricating oil reserve and evenly lubricating the lock shaft 1 and the rotating sleeve 2 is provided on the lock shaft 1. Seals are provided at both ends of the inner wall of the rotating sleeve 2 for rotating and sealing with the lock shaft 1 to prevent the lubricating oil from leaking out of the matching gap between the lock shaft 1 and the rotating sleeve 2. The seal is a sealing ring 5 made of elastic material. A groove 8 is recessed around the circumference of the rotating sleeve 2 at both ends of the inner wall of the rotating sleeve 2. The outer ring wall of the sealing ring 5 is elastically interference fit in the groove 8, and the inner ring wall of the sealing ring 5 is elastically interference fit with the outer ring wall of the lock shaft 1.
[0031] Combination Figure 3 As shown, the first oil storage portion includes an inner oil storage groove 6 which is circumferentially recessed around the rotating sleeve 2 on the inner wall in the middle of the rotating sleeve 2 and an outer oil storage groove 7 which is arranged between the sealing ring 5 and the inner oil storage groove 6 and close to the sealing ring 5. The inner oil storage groove 6 is arranged in three groups at intervals along the axial direction of the rotating sleeve 2, and the outer oil storage groove 7 is arranged in two groups at intervals along the axial direction of the rotating sleeve 2. The oil filling hole 3 is connected to the inner oil storage groove 6. When the lubricating oil enters between the rotating sleeve 2 and the lock shaft 1 from the oil filling hole 3, it can move between the outer oil storage groove 7 and the inner oil storage groove 6 to increase the lubricity of the rotating sleeve 2 and the lock shaft 1.
[0032] The second oil storage part includes oil storage micro-pits 4 evenly spaced apart between the sealing rings 5 on the lock shaft 1. The oil storage micro-pits 4 are formed by laser shot blasting or sand blasting. Each oil storage micro-pit 4 can store a small amount of lubricating oil. The oil storage micro-pits 4 are evenly distributed on the lock shaft 1, which can evenly increase the oil storage capacity per unit area and increase the smoothness of the cooperation between the lock shaft 1 and the rotating sleeve 2.
[0033] When the lock shaft 1 and the rotating sleeve 2 of this embodiment are applied to the injection molding machine, the following can be referred to: Figure 4 As shown, first insert the rotating sleeve 2 into the mounting groove of the crank 12 and fix it using the existing method. An oil inlet hole 13 connected to the mounting groove is provided at the upper end of the crank 12. The oil inlet hole 13 is connected to any one of the oil filling holes 3 for injecting lubricating oil into the rotating sleeve 2. Next, the rotating sleeve 2 of the crank 12 is aligned with the through hole on the side wall of the groove 11 on the mounting seat 10 of the template 9. Further, the locking shaft 1 is passed through the through hole and the rotating sleeve 2 in turn. Finally, the two ends of the locking shaft 1 are locked with the two ends of the mounting seat 10, and the assembly of the locking shaft 1 and the rotating sleeve 2 can be realized.
[0034] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A lubricating matching structure of a lock shaft and a rotating sleeve of an injection molding machine, comprising a lock shaft (1) and a rotating sleeve (2) which is rotatably mounted on the lock shaft (1), and an oil injection hole (3) for injecting lubricating oil into the matching gap between the lock shaft (1) and the rotating sleeve (2) is provided on the rotating sleeve (2), characterized in that: A first oil storage portion for increasing the amount of lubricating oil stored is provided on the inner wall of the rotating sleeve (2), a second oil storage portion for increasing the amount of lubricating oil stored and evenly lubricating the locking shaft (1) and the rotating sleeve (2) is provided on the lock shaft (1), and sealing members are provided at both ends of the inner wall of the rotating sleeve (2) for rotating and sealingly cooperating with the locking shaft (1) to prevent the lubricating oil from leaking out of the matching gap between the locking shaft (1) and the rotating sleeve (2).
2. The lubrication matching structure of the lock shaft rotating sleeve of the injection molding machine according to claim 1, characterized in that: The first oil storage portion comprises an inner oil storage groove (6) which is recessed circumferentially around the rotating sleeve (2) on the inner wall in the middle of the rotating sleeve (2) and an outer oil storage groove (7) which is arranged between the sealing element and the inner oil storage groove (6) and close to the sealing element.
3. The lubrication matching structure of the lock shaft rotating sleeve of the injection molding machine according to claim 2 is characterized in that: At least one inner oil storage groove (6) and / or outer oil storage groove (7) is arranged at intervals along the axial direction of the rotating sleeve (2).
4. The lubrication matching structure of the lock shaft rotating sleeve of the injection molding machine according to claim 1, characterized in that: The second oil storage portion comprises oil storage micro-pits (4) evenly spaced and distributed between the sealing elements on the lock shaft (1).
5. The lubrication matching structure of the lock shaft rotating sleeve of the injection molding machine according to claim 4, characterized in that: The oil storage micro-pits (4) are formed by laser shot blasting or sand blasting.
6. The lubrication matching structure of the lock shaft rotating sleeve of an injection molding machine according to claim 1, characterized in that: A clamping groove (8) is recessed around the circumference of the rotating sleeve (2) at both ends of the inner wall of the rotating sleeve (2), and the sealing member is a sealing ring (5) whose outer ring wall is elastically interference-fitted and embedded in the clamping groove (8).
7. The lubrication matching structure of the lock shaft rotating sleeve of the injection molding machine according to claim 1, characterized in that: One to four oil injection holes (3) are evenly spaced around the circumference of the rotating sleeve (2).
8. The lubrication matching structure of the lock shaft rotating sleeve of an injection molding machine according to claim 2, characterized in that: The oil filling hole (3) is communicated with the inner oil storage tank (6) or the outer oil storage tank (7).