A built-in fuel tank structure for a linear guide rail

Abstract

The present invention discloses a linear guide rail built-in fuel tank structure, belonging to the technical field of linear guide rails, which includes a guide rail, a sliding body, two end covers and at least a pair of rolling element channels; one end cover is provided at each end of the sliding body; the sliding body is fitted on the guide rail and longitudinally moves along the guide rail; a pair of rolling element channels are provided on each side of the sliding body in the moving direction; a slider fuel tank is arranged inside the sliding body; the slider fuel tank extends at least to one end face of the sliding body, and an oil circuit system is provided on this end face; the slider fuel tank supplies oil to the rolling element channels through the oil circuit system; a sealing member for sealing the oil circuit system is provided on the end face of the sliding body where the oil circuit system is provided. The linear guide rail built-in fuel tank structure of the present invention can self-lubricate without shortening the stroke, has good sealing performance, does not leak oil, is convenient for maintenance and has low cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of linear guides, and particularly relates to a built-in fuel tank structure for a linear guide. Background Art

[0002] A linear guide motion device is used to guide an object to move along a pre-set linear trajectory. The linear guide motion device generally includes a linear guide and a slider mounted on the linear guide. The object to be guided is connected to the slider, and thus moves linearly along the guide under the guidance of the slider. The slider generally includes a slider body and outer circulators located at both ends of the slider body. A ball load channel for the balls to roll is provided on the side of the slider body facing the linear guide. A ball return channel penetrating through the front and rear ends of the slider body is provided on the slider body. The ball load channel and the ball return channel are connected through a ball transition channel provided on the outer circulator, thereby forming a ball circulation channel. A plurality of balls with the same size and closely arranged are provided in the ball circulation channel. The slider body contacts the linear guide through the balls located in the ball load channel, and the balls roll forward in the ball circulation channel as the slider moves.

[0003] Linear guide rails are a kind of precision linear drive components. The lubrication state of relative moving parts during operation has a huge impact on their service life. There are two traditional lubrication methods for linear guide rails. One is to supplement lubricating oil individually at regular intervals, which is inconvenient during lubrication maintenance. The other is a forced lubrication system that supplements lubricating oil in a timed and quantitative manner, which requires additional oil supply equipment and pipelines. In the prior art, an oil guide pipe is used to continuously supplement lubricating oil to the slider. It is necessary to install a copper pipe oil circuit to connect an automatic or manual oil injection device to pour the lubricating oil into the slider and immerse it into the operating system that needs lubrication. The disadvantages are the inevitable costs of oil nozzles, oil pipes, automatic or manual oil injection devices, and manual assembly costs. There are also environmental problems because accurate lubrication cannot be achieved. It is necessary to immerse the lubricating oil throughout the lubricating space inside the slider. This inefficient slider lubrication method results in a lot of excess oil overflowing, which not only wastes but also causes great environmental problems. In order to avoid the inconvenience of machine maintenance and simplify the complexity of machine equipment, the self-lubricating linear guide rail came into being. The self-lubricating linear guide rail combines the concept of being detachable, enabling the linear guide rail to extend the maintenance cycle. Its self-lubrication module mainly includes a lubrication mechanism, a connector, and a replaceable oil tank. To achieve the self-lubrication effect for existing linear guide rails, it is necessary to adopt the method of selecting and installing an external oil tank, so that the manufacturer knows and assembles it for the customer when ordering, or the customer purchases and replaces the self-lubricating block assembly for use. Adding an oil tank at one or both ends of the slider to supplement lubricating oil to the operating system inside the slider not only increases the additional cost of replacing the self-lubrication module, but also the external oil tank has a certain thickness dimension to generate a volume to accommodate the lubricating oil. At the same time, it also reduces the most important stroke length and lowers the added value of the machine. This is very disadvantageous in situations where the equipment space is limited, restricting the development of related industries. For example, automated equipment usually needs to complete related actions in a relatively limited space. In addition to calculating the movement rate per square meter area for electronic semiconductors, the miniaturization requirements of products also require the efficient use of equipment under the premise of minimizing the equipment size. Summary of the Invention

[0004] The object of the present invention is to provide a built-in oil tank structure for a linear guide rail aiming at the above deficiencies, and to solve the problems such as the shortened stroke, complex structure, and high cost of the existing self-lubricating oil tank. To achieve the above object, the present invention provides the following technical solutions:

[0005] A built-in fuel tank structure for a linear guide rail, comprising a guide rail, a sliding body 1, two end caps 2 and at least a pair of rolling element channels; one end cap 2 is provided at each end of the sliding body 1; the sliding body 1 is fitted on the guide rail and moves longitudinally along the guide rail; a pair of rolling element channels are provided on each side of the moving direction of the sliding body 1; a slider fuel tank 3 is provided inside the sliding body 1; the slider fuel tank 3 extends at least to one end face of the sliding body 1, and an oil circuit system 4 is provided on this end face; the slider fuel tank 3 supplies oil to the rolling element channels through the oil circuit system 4; a seal 5 for sealing the oil circuit system 4 is provided on the end face of the sliding body 1 where the oil circuit system 4 is provided. From the above structure, it can be seen that the slider fuel tank 3 is located inside the sliding body 1, so there is no need to externally hang a fuel tank, and the stroke of the linear guide rail will not be shortened. The number of slider fuel tanks 3 can be one or more, and the positions can also be arranged as required; when the slider fuel tank 3 extends to one end face of the sliding body 1, only an oil circuit system 4 needs to be provided on this end face for centralized oil supply to lubricate each rolling element channel; when the slider fuel tank 3 extends to both end faces of the sliding body 1, oil circuit systems 4 are provided on both end faces for 3D three-dimensional oil supply to lubricate each rolling element channel at multiple points, so that when the oil quantity at any position is small, it can contact the lubricating oil, and the lubrication effect is better. When the slider fuel tank 3 extends to both end faces of the sliding body 1, a cylindrical slider fuel tank 3 that penetrates the sliding body 1 can be directly milled on the sliding body 1; the seal 5 seals the oil circuit system 4, so the slider fuel tank 3 can only supply oil to the rolling element channels through the oil circuit system 4 and will not leak to other places; for the built-in fuel tank structure of the linear guide rail of the present invention, it will not affect the lubrication effect in a dusty environment, exposed to harsh weather conditions and a water environment, can be sealed with grease for better lubrication effect, and appropriate lubricating oil can also be injected according to the specific environment. For the built-in fuel tank structure of the linear guide rail of the present invention, there is no problem of the externally hung fuel tank being easily damaged by collision, meeting the requirements of safety and reliability. For the built-in fuel tank structure of the linear guide rail of the present invention, for normal users, almost no maintenance work is required within the general service life. For the built-in fuel tank structure of the linear guide rail of the present invention, there is no problem of oil leakage, reducing oil waste, being suitable for use in an environment with high cleanliness requirements, and being more environmentally friendly. For the built-in fuel tank structure of the linear guide rail of the present invention, the costs of oil nozzles, copper pipes, oil injection devices, and installation of lubrication components are eliminated, the structure is simple, and the cost is lower. The slider fuel tank 3 supplies oil through the oil circuit system 4. Since the slider fuel tank 3 is provided inside the sliding body 1, the distance for the lubricating oil to reach the lubrication position is the shortest, and the lubrication efficiency is better.

[0006] Furthermore, an oil filling channel 6 is provided on the end cover 2 corresponding to the sealing member 5; a self-sealing hole 7 is provided at the position of the sealing member 5 corresponding to the oil filling channel 6; the self-sealing hole 7 can be connected to the slider oil tank 3. It can be seen from the above structure that when the slider oil tank 3 needs to be supplemented with lubricating oil, the needle of the syringe with lubricating oil is inserted into the oil filling channel 6, the needle head penetrates the self-sealing hole 7, and the syringe injects lubricating oil into the slider oil tank 3. When the syringe is pulled out, the self-sealing hole 7 is automatically sealed by elasticity, and the lubricating oil will not leak out. The linear guide rail of the present invention has a built-in oil tank structure, which is convenient for adding lubricating oil, eliminates the complex filling structure, and has good sealing performance. There can be one or more self-sealing holes 7, and the self-sealing holes 7 can be directly connected to the slider oil tank 3, or indirectly connected to the slider oil tank 3 through the oil circuit system 4.

[0007] Furthermore, an end cover oil tank 8 is provided in the end cover 2 corresponding to the seal 5; a connecting hole 9 is provided at the position of the seal 5 corresponding to the end cover oil tank 8; the connecting hole 9 connects the end cover oil tank 8 and the slider oil tank 3. As can be seen from the above structure, there is still a lot of available space in the end cover 2 after removing the space of the rolling body channel. By providing the end cover oil tank 8 in the end cover 2, the connecting hole 9 directly or indirectly connects the end cover oil tank 8 and the slider oil tank 3, and the end cover oil tank 8 performs auxiliary oil storage, so that the capacity of the slider oil tank 3 is further expanded, and the oil storage capacity is improved. Since the end cover 2 itself exists, it only uses the space of the end cover 2 itself, and the stroke will not be shortened, but the space for accommodating lubricating oil is expanded. When the syringe fills lubricating oil into the slider oil tank 3, the excess lubricating oil will diffuse into the end cover oil tank 8 for auxiliary storage. The end cover oil tank 8 is supplied with oil through the oil circuit system 4. Because the end cover oil tank 8 is arranged in the end cover 2, the distance for the lubricating oil to reach the lubrication position is the shortest, and the lubrication efficiency is better.

[0008] Furthermore, the rolling body channel includes a load section 10 disposed between the sliding body 1 and the guide rail, a return section 11 penetrating the two ends of the sliding body 1, and two turning sections 12 connecting the load section 10 and the return section 11; the two turning sections 12 of a rolling body channel are disposed one by one in the end covers 2 provided at the two ends of the sliding body 1; the oil circuit system 4 connects the slider oil tank 3 and the load section 10. As can be seen from the above structure, the main part of the rolling body channel that needs lubrication is the load section 10, which is the most seriously worn, so the oil circuit system 4 connects the slider oil tank 3 and the load section 10, which can improve the service life of the linear guide.

[0009] Furthermore, the slider oil tank 3 extends to the two end faces of the sliding body 1, and the two end faces are provided with an oil circuit system 4 and a seal 5 for sealing the oil circuit system 4. As can be seen from the above structure, the slider oil tank 3 extends to the two end faces of the sliding body 1, and the two end faces are provided with an oil circuit system 4, so that 3D three-dimensional oil supply is performed, and multi-point lubrication is performed on each rolling element channel, so that when the amount of oil at any position is small, it can contact the lubricating oil, and the lubrication effect is better.

[0010] Furthermore, there are two pairs of rolling element channels, with one pair arranged at the upper and lower positions in the moving direction of the sliding body 1; the four load sections 10 of the two pairs of rolling element channels are distributed at the lower left position, upper left position, lower right position, and upper right position of the sliding body 1. There are two slider oil tanks 3; the oil circuit system 4 includes two drainage lines 13, two main oil supply lines 14, two pairs of oil supply branch lines 15, and a transition hole 16; the transition hole 16 is respectively connected to the two slider oil tanks 3 through the two drainage lines 13; the transition hole 16 is respectively connected to the two pairs of oil supply branch lines 15 through the two main oil supply lines 14; in one pair of oil supply branch lines 15, one oil supply branch line 15 is connected to the load section 10 at the upper position, and the other oil supply branch line 15 is connected to the load section 10 at the lower position. From the above structure, it can be seen that there are two pairs of rolling element channels, that is, the four rolling element channels are symmetrically arranged; the lubricating oil in the two slider oil tanks 3 flows along the drainage lines 13 to the transition hole 16 to converge, and then the lubricating oil flows from the two main oil supply lines 14 to the four oil supply branch lines 15, and the four oil supply branch lines 15 supply oil to the four load sections 10. The oil supply branch lines 15 are micropores, and the lubricating oil will not leak, and is led to the four load sections 10 through capillary action, or is sucked to the four load sections 10 through siphon action.

[0011] Furthermore, the slider oil tank 3, the drainage line 13, the transition hole 16, and the main oil supply line 14 extend downward in sequence as a whole; the paired oil supply branch lines 15 are located at the lower end of the main oil supply line 14. From the above structure, it can be seen that it is convenient for the lubricating oil to flow from the slider oil tank 3 to the oil supply branch lines 15.

[0012] Furthermore, an oil-absorbing felt is embedded in the oil circuit system 4. From the above structure, it can be seen that the oil-absorbing felt can maintain a stable supply of lubricating oil, and only when the load section 10 lacks lubricating oil, the oil-absorbing felt supplies lubricating oil to the load section 10.

[0013] Furthermore, the slider oil tank 3 is refilled with oil by replenishing oil from the side, top, or end face of the sliding body 1. From the above structure, it can be seen that the slider oil tank 3 can be refilled with oil from the side, top, or end face of the sliding body 1, without affecting the stroke of the linear guide.

[0014] Furthermore, the end cover oil tank 8 is refilled with oil by replenishing oil from the side, top, or outer end face of the end cover 2. From the above structure, it can be seen that the end cover oil tank 8 can be refilled with oil from the side, top, or outer end face of the end cover 2, without affecting the stroke of the linear guide.

[0015] The beneficial effects of the present invention are:

[0016] The present invention discloses a built-in fuel tank structure for a linear guide rail, belonging to the technical field of linear guide rails, which includes a guide rail, a sliding body, two end covers and at least a pair of rolling element channels; one end cover is provided at each end of the sliding body; the sliding body is fitted on the guide rail and moves longitudinally along the guide rail; a pair of rolling element channels are arranged on each side of the sliding body in the moving direction; a slider fuel tank is arranged inside the sliding body; the slider fuel tank extends at least to one end face of the sliding body, and an oil circuit system is provided on this end face; the slider fuel tank supplies oil to the rolling element channels through the oil circuit system; a seal is provided on the end face of the sliding body where the oil circuit system is provided to seal the oil circuit system. The built-in fuel tank structure for a linear guide rail of the present invention can self-lubricate without shortening the stroke, has good sealing performance, does not leak oil, is convenient for maintenance, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the linear guide rail of the present invention;

[0018] Figure 2 is a schematic structural diagram of the end cover and the seal of the present invention;

[0019] Figure 3 is a schematic structural diagram of the sliding body of the present invention;

[0020] In the drawings: 1 - sliding body, 2 - end cover, 3 - slider fuel tank, 4 - oil circuit system, 5 - seal, 6 - oil injection channel, 7 - self-sealing hole, 8 - end cover fuel tank, 9 - communication hole, 10 - load section, 11 - return section, 12 - turning section, 13 - drainage line, 14 - main oil supply line, 15 - branch oil supply line, 16 - transition hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments, but the present invention is not limited to the following embodiments.

[0022] Embodiment 1:

[0023] See the appendix Figures 1 to 3。A built-in oil tank structure for a linear guide rail includes a guide rail, a sliding body 1, two end caps 2, and at least a pair of rolling element channels. One end cap 2 is provided at each end of the sliding body 1. The sliding body 1 is fitted on the guide rail and moves longitudinally along the guide rail. A pair of rolling element channels are provided on each side of the moving direction of the sliding body 1. A slider oil tank 3 is provided inside the sliding body 1. The slider oil tank 3 extends at least to one end face of the sliding body 1, and an oil circuit system 4 is provided on this end face. The slider oil tank 3 supplies oil to the rolling element channels through the oil circuit system 4. A seal 5 for sealing the oil circuit system 4 is provided on the end face of the sliding body 1 where the oil circuit system 4 is provided. From the above structure, it can be seen that the slider oil tank 3 is located inside the sliding body 1, so there is no need to externally hang an oil tank, and the stroke of the linear guide rail will not be shortened. The number of slider oil tanks 3 can be one or more, and the positions can also be arranged as required. When the slider oil tank 3 extends to one end face of the sliding body 1, only an oil circuit system 4 needs to be provided on this end face for centralized oil supply to lubricate each rolling element channel. When the slider oil tank 3 extends to both end faces of the sliding body 1, oil circuit systems 4 are provided on both end faces for 3D three-dimensional oil supply to lubricate each rolling element channel at multiple points, so that when the oil volume at any position is small, it can still contact the lubricating oil, and the lubrication effect is better. When the slider oil tank 3 extends to both end faces of the sliding body 1, a cylindrical slider oil tank 3 that penetrates the sliding body 1 can be directly milled on the sliding body 1. The seal 5 seals the oil circuit system 4, so the slider oil tank 3 can only supply oil to the rolling element channels through the oil circuit system 4 and will not leak to other places. The built-in oil tank structure of the linear guide rail of the present invention will not affect the lubrication effect in a dusty environment, exposed to harsh weather conditions, and in a water environment. It can be filled with grease to achieve a better lubrication effect, or appropriate lubricating oil can be injected according to the specific environment. The built-in oil tank structure of the linear guide rail of the present invention does not have the problem of the external oil tank being easily damaged by collision, meeting the requirements of safety and reliability. For normal users, the built-in oil tank structure of the linear guide rail of the present invention hardly requires any maintenance work during the general service life. The built-in oil tank structure of the linear guide rail of the present invention does not have the problem of oil leakage, reducing oil waste, being suitable for use in environments with high cleanliness requirements, and being more environmentally friendly. The built-in oil tank structure of the linear guide rail of the present invention eliminates the costs of oil nozzles, copper pipes, oil injection devices, and installation of lubrication components, with a simple structure and lower costs. The slider oil tank 3 supplies oil through the oil circuit system 4. Since the slider oil tank 3 is provided inside the sliding body 1, the distance for the lubricating oil to reach the lubricating position is the shortest, and the lubrication efficiency is better.

[0024] Embodiment 2:

[0025] See appendix Figures 1 to 3. A built-in oil tank structure for a linear guide rail, comprising a guide rail, a sliding body 1, two end covers 2 and at least a pair of rolling element channels; one end cover 2 is provided at each end of the sliding body 1; the sliding body 1 is fitted on the guide rail and moves longitudinally along the guide rail; a pair of rolling element channels are provided on each side of the moving direction of the sliding body 1; a slider oil tank 3 is provided inside the sliding body 1; the slider oil tank 3 extends at least to one end face of the sliding body 1, and an oil circuit system 4 is provided on this end face; the slider oil tank 3 supplies oil to the rolling element channels through the oil circuit system 4; a seal 5 for sealing the oil circuit system 4 is provided on the end face of the sliding body 1 where the oil circuit system 4 is provided. From the above structure, it can be seen that the slider oil tank 3 is located inside the sliding body 1, so there is no need to externally hang an oil tank, and the stroke of the linear guide rail will not be shortened. The number of slider oil tanks 3 can be one or more, and the positions can also be arranged as required; when the slider oil tank 3 extends to one end face of the sliding body 1, only an oil circuit system 4 needs to be provided on this end face for centralized oil supply to lubricate each rolling element channel; when the slider oil tank 3 extends to both end faces of the sliding body 1, oil circuit systems 4 are provided on both end faces for 3D three-dimensional oil supply to lubricate each rolling element channel at multiple points, so that when the oil volume at any position is small, it can contact the lubricating oil, and the lubrication effect is better. When the slider oil tank 3 extends to both end faces of the sliding body 1, a cylindrical slider oil tank 3 that penetrates the sliding body 1 can be directly milled on the sliding body 1; the seal 5 seals the oil circuit system 4, so the slider oil tank 3 can only supply oil to the rolling element channels through the oil circuit system 4 and will not leak to other places; the built-in oil tank structure of the linear guide rail of the present invention will not affect the lubrication effect in a dusty environment, exposed to harsh weather conditions and a water environment, can be sealed with grease for better lubrication effect, and can also inject appropriate lubricating oil according to the specific environment. The built-in oil tank structure of the linear guide rail of the present invention does not have the problem of easy collision and damage of the externally hung oil tank, meeting the requirements of safety and reliability. The built-in oil tank structure of the linear guide rail of the present invention hardly requires any maintenance work for normal users within a general service life. The built-in oil tank structure of the linear guide rail of the present invention does not have the problem of external oil leakage, reducing oil waste, being suitable for use in an environment with high cleanliness requirements and being more environmentally friendly. The built-in oil tank structure of the linear guide rail of the present invention eliminates the costs of oil nozzles, copper pipes, oil injection devices, and installation of lubrication components, with a simple structure and lower costs. The slider oil tank 3 supplies oil through the oil circuit system 4. Since the slider oil tank 3 is provided inside the sliding body 1, the distance for the lubricating oil to reach the lubrication position is the shortest, and the lubrication efficiency is better.

[0026] An oil filling channel 6 is provided on the end cover 2 corresponding to the sealing member 5; a self-sealing hole 7 is provided at the position of the sealing member 5 corresponding to the oil filling channel 6; the self-sealing hole 7 can be connected to the slider oil tank 3. It can be seen from the above structure that when the slider oil tank 3 needs to be supplemented with lubricating oil, the needle of the syringe with lubricating oil is inserted into the oil filling channel 6, the needle head penetrates the self-sealing hole 7, and the syringe injects lubricating oil into the slider oil tank 3. When the syringe is pulled out, the self-sealing hole 7 is automatically sealed by elasticity, and the lubricating oil will not leak out. The linear guide rail of the present invention has a built-in oil tank structure, which is convenient for adding lubricating oil, eliminates the complicated filling structure, and has good sealing performance. There can be one or more self-sealing holes 7, and the self-sealing holes 7 can be directly connected to the slider oil tank 3, or indirectly connected to the slider oil tank 3 through the oil circuit system 4.

[0027] An end cover oil tank 8 is provided in the end cover 2 corresponding to the seal 5; a connecting hole 9 is provided at the position of the seal 5 corresponding to the end cover oil tank 8; the connecting hole 9 connects the end cover oil tank 8 and the slider oil tank 3. As can be seen from the above structure, there is still a lot of available space in the end cover 2 after removing the space of the rolling body channel. By providing the end cover oil tank 8 in the end cover 2, the connecting hole 9 directly or indirectly connects the end cover oil tank 8 and the slider oil tank 3, and the end cover oil tank 8 performs auxiliary oil storage, so that the capacity of the slider oil tank 3 is further expanded, and the oil storage capacity is improved. Since the end cover 2 itself exists, it only uses the space of the end cover 2 itself, and the stroke will not be shortened, but the space for accommodating lubricating oil is expanded. When the syringe fills the slider oil tank 3 with lubricating oil, the excess lubricating oil will spread to the end cover oil tank 8 for auxiliary storage. The end cover oil tank 8 is supplied with oil through the oil circuit system 4. Because the end cover oil tank 8 is arranged in the end cover 2, the distance for the lubricating oil to reach the lubrication position is the shortest, and the lubrication efficiency is better.

[0028] Embodiment three:

[0029] See attached Figures 1 to 3. A built-in oil tank structure for a linear guide rail, comprising a guide rail, a sliding body 1, two end covers 2, and at least a pair of rolling element channels; one end cover 2 is provided at each end of the sliding body 1; the sliding body 1 is fitted on the guide rail and moves longitudinally along the guide rail; a pair of rolling element channels are provided on each side of the moving direction of the sliding body 1; a slider oil tank 3 is provided inside the sliding body 1; the slider oil tank 3 extends at least to one end face of the sliding body 1, and an oil circuit system 4 is provided on this end face; the slider oil tank 3 supplies oil to the rolling element channels through the oil circuit system 4; a seal 5 for sealing the oil circuit system 4 is provided on the end face of the sliding body 1 where the oil circuit system 4 is provided. From the above structure, it can be seen that the slider oil tank 3 is located inside the sliding body 1, so there is no need to externally hang an oil tank, and the stroke of the linear guide rail will not be shortened. The number of slider oil tanks 3 can be one or more, and the positions can also be arranged as required; when the slider oil tank 3 extends to one end face of the sliding body 1, only an oil circuit system 4 needs to be provided on this end face for centralized oil supply to lubricate each rolling element channel; when the slider oil tank 3 extends to both end faces of the sliding body 1, oil circuit systems 4 are provided on both end faces for 3D three-dimensional oil supply to perform multi-point lubrication on each rolling element channel, so that when the oil quantity at any position is small, it can contact the lubricating oil, and the lubrication effect is better. When the slider oil tank 3 extends to both end faces of the sliding body 1, a cylindrical slider oil tank 3 penetrating the sliding body 1 can be directly milled on the sliding body 1; the seal 5 seals the oil circuit system 4, so the slider oil tank 3 can only supply oil to the rolling element channels through the oil circuit system 4 and will not leak to other places; for the built-in oil tank structure of the linear guide rail of the present invention, in a dust environment, exposed to a harsh weather environment, and in a water environment, the lubrication effect will not be affected, and it can be sealed with grease for a better lubrication effect, or appropriate lubricating oil can be injected according to the specific environment. For the built-in oil tank structure of the linear guide rail of the present invention, there is no problem of the externally hung oil tank being easily damaged by collision, meeting the requirements of safety and reliability. For the built-in oil tank structure of the linear guide rail of the present invention, for normal users, almost no maintenance work is required within the general service life. For the built-in oil tank structure of the linear guide rail of the present invention, there is no problem of oil leakage, reducing oil waste, being suitable for use in an environment with high cleanliness requirements, and being more environmentally friendly. For the built-in oil tank structure of the linear guide rail of the present invention, the costs of oil nozzles, copper pipes, oil injection devices, and installation of lubrication components are eliminated, the structure is simple, and the cost is lower. The slider oil tank 3 supplies oil through the oil circuit system 4. Since the slider oil tank 3 is provided inside the sliding body 1, the distance for the lubricating oil to reach the lubricating position is the shortest, and the lubrication efficiency is better.

[0030] An oil filling channel 6 is provided on the end cover 2 corresponding to the sealing member 5; a self-sealing hole 7 is provided at the position of the sealing member 5 corresponding to the oil filling channel 6; the self-sealing hole 7 can be connected to the slider oil tank 3. It can be seen from the above structure that when the slider oil tank 3 needs to be supplemented with lubricating oil, the needle of the syringe with lubricating oil is inserted into the oil filling channel 6, the needle head penetrates the self-sealing hole 7, and the syringe injects lubricating oil into the slider oil tank 3. When the syringe is pulled out, the self-sealing hole 7 is automatically sealed by elasticity, and the lubricating oil will not leak out. The linear guide rail of the present invention has a built-in oil tank structure, which is convenient for adding lubricating oil, eliminates the complicated filling structure, and has good sealing performance. There can be one or more self-sealing holes 7, and the self-sealing holes 7 can be directly connected to the slider oil tank 3, or indirectly connected to the slider oil tank 3 through the oil circuit system 4.

[0031] An end cover oil tank 8 is provided in the end cover 2 corresponding to the seal 5; a connecting hole 9 is provided at the position of the seal 5 corresponding to the end cover oil tank 8; the connecting hole 9 connects the end cover oil tank 8 and the slider oil tank 3. As can be seen from the above structure, there is still a lot of available space in the end cover 2 after removing the space of the rolling body channel. By providing the end cover oil tank 8 in the end cover 2, the connecting hole 9 directly or indirectly connects the end cover oil tank 8 and the slider oil tank 3, and the end cover oil tank 8 performs auxiliary oil storage, so that the capacity of the slider oil tank 3 is further expanded, and the oil storage capacity is improved. Since the end cover 2 itself exists, it only uses the space of the end cover 2 itself, and the stroke will not be shortened, but the space for accommodating lubricating oil is expanded. When the syringe fills the slider oil tank 3 with lubricating oil, the excess lubricating oil will spread to the end cover oil tank 8 for auxiliary storage. The end cover oil tank 8 is supplied with oil through the oil circuit system 4. Because the end cover oil tank 8 is arranged in the end cover 2, the distance for the lubricating oil to reach the lubrication position is the shortest, and the lubrication efficiency is better.

[0032] The rolling body channel includes a load section 10 arranged between the sliding body 1 and the guide rail, a return section 11 running through both ends of the sliding body 1, and two turning sections 12 connecting the load section 10 and the return section 11; the two turning sections 12 of a rolling body channel are arranged in a one-to-one correspondence in the end covers 2 provided at both ends of the sliding body 1; the oil circuit system 4 connects the slider oil tank 3 and the load section 10. From the above structure, it can be seen that the main part of the rolling body channel that needs lubrication is the load section 10, which is the most seriously worn, so the oil circuit system 4 connects the slider oil tank 3 and the load section 10, which can improve the service life of the linear guide.

[0033] The slider oil tank 3 extends to the two end faces of the sliding body 1, and the two end faces are provided with an oil circuit system 4 and a seal 5 for sealing the oil circuit system 4. As can be seen from the above structure, the slider oil tank 3 extends to the two end faces of the sliding body 1, and the two end faces are provided with an oil circuit system 4, so that 3D three-dimensional oil supply is performed, and multi-point lubrication is performed on each rolling element channel, so that when the amount of oil at any position is small, it can contact the lubricating oil, and the lubrication effect is better.

[0034] There are two pairs of the rolling element channels, with one pair arranged at the upper and lower positions in the moving direction of the sliding body 1; the four load sections 10 of the two pairs of rolling element channels are distributed at the lower left position, upper left position, lower right position and upper right position of the sliding body 1. The number of the slider oil tanks 3 is two; the oil circuit system 4 includes two drainage lines 13, two oil supply main lines 14, two pairs of oil supply branch lines 15 and a transition hole 16; the transition hole 16 is respectively communicated with the two slider oil tanks 3 through the two drainage lines 13; the transition hole 16 is respectively communicated with the two pairs of oil supply branch lines 15 through the two oil supply main lines 14; in a pair of oil supply branch lines 15, one oil supply branch line 15 is communicated with the load section 10 at the upper position, and the other oil supply branch line 15 is communicated with the load section 10 at the lower position. It can be seen from the above structure that there are two pairs of rolling element channels, that is, the four rolling element channels are symmetrically arranged; the lubricating oil in the two slider oil tanks 3 flows along the drainage lines 13 to the transition hole 16 to converge, and then the lubricating oil flows from the two oil supply main lines 14 to the four oil supply branch lines 15, and the four oil supply branch lines 15 supply oil to the four load sections 10. The oil supply branch lines 15 are micro holes, and the lubricating oil will not leak, and is led to the four load sections 10 through the capillary phenomenon, or is sucked to the four load sections 10 through the siphon phenomenon.

[0035] The slider oil tank 3, the drainage line 13, the transition hole 16 and the oil supply main line 14 as a whole extend downward in sequence; the paired oil supply branch lines 15 are located at the lower end of the oil supply main line 14. It can be seen from the above structure that it is convenient for the lubricating oil to flow from the slider oil tank 3 to the oil supply branch lines 15.

[0036] The oil circuit system 4 is embedded with an oil-absorbing felt. It can be seen from the above structure that the oil-absorbing felt can keep the lubricating oil supply stable, and only when the load section 10 lacks lubricating oil, the oil-absorbing felt supplies lubricating oil to the load section 10.

[0037] The way to replenish oil in the slider oil tank 3 is to replenish oil from the side surface, top surface or end surface of the sliding body 1. It can be seen from the above structure that the slider oil tank 3 can be replenished with oil from the side surface, top surface or end surface of the sliding body 1, without affecting the stroke of the linear guide rail.

[0038] The way to replenish oil in the end cover oil tank 8 is to replenish oil from the side surface, top surface or outer end surface of the end cover 2. It can be seen from the above structure that the end cover oil tank 8 can be replenished with oil from the side surface, top surface or outer end surface of the end cover 2, without affecting the stroke of the linear guide rail.

[0039] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A built-in fuel tank structure for a linear guide rail, characterized in that: It includes a guide rail, a sliding body (1), two end caps (2) and at least a pair of rolling element channels; there is an end cap (2) provided at each end of the sliding body (1); the sliding body (1) is fitted on the guide rail and moves longitudinally along the guide rail; a pair of rolling element channels are provided on each side of the moving direction of the sliding body (1); a slider oil tank (3) is provided inside the sliding body (1); the slider oil tank (3) extends at least to one end face of the sliding body (1), and an oil circuit system (4) is provided on this end face; the slider oil tank (3) supplies oil to the rolling element channels through the oil circuit system (4); a seal (5) for sealing the oil circuit system (4) is provided on the end face of the sliding body (1) where the oil circuit system (4) is provided; an end cap oil tank (8) is provided inside the end cap (2) corresponding to the seal (5); a communication hole (9) is provided at the position of the seal (5) corresponding to the end cap oil tank (8); the communication hole (9) connects the end cap oil tank (8) and the slider oil tank (3). There are two pairs of the rolling element channels, and one pair is provided at each of the upper and lower positions in the moving direction of the sliding body (1); the four load sections (10) of the two pairs of rolling element channels are distributed at the lower left position, upper left position, lower right position and upper right position of the sliding body (1); the number of the slider oil tanks (3) is two; the oil circuit system (4) includes two drainage lines (13), two main oil supply lines (14), two pairs of branch oil supply lines (15) and a transition hole (16); the transition hole (16) is connected to the two slider oil tanks (3) respectively through the two drainage lines (13); the transition hole (16) is connected to the two pairs of branch oil supply lines (15) respectively through the two main oil supply lines (14); in one pair of branch oil supply lines (15), one branch oil supply line (15) is connected to the load section (10) at the upper position, and the other branch oil supply line (15) is connected to the load section (10) at the lower position.

2. The built-in fuel tank structure of a linear guide rail according to claim 1, characterized in that: An oil injection channel (6) is provided on the end cap (2) corresponding to the seal (5); a self-sealing hole (7) is provided at the position of the seal (5) corresponding to the oil injection channel (6); the self-sealing hole (7) can be connected to the slider oil tank (3).

3. The built-in fuel tank structure of a linear guide rail according to claim 1, characterized in that: The rolling element channel includes a load section (10) provided between the sliding body (1) and the guide rail, a return section (11) penetrating through both ends of the sliding body (1), and two turning sections (12) connecting the load section (10) and the return section (11); the two turning sections (12) of one rolling element channel are correspondingly provided inside the end caps (2) provided at both ends of the sliding body (1); the oil circuit system (4) is connected to the slider oil tank (3) and the load section (10).

4. A built-in fuel tank structure for a linear guide rail according to claim 3, characterized in that: The slider oil tank (3) extends to the two end faces of the sliding body (1), and oil circuit systems (4) and seals (5) for sealing the oil circuit systems (4) are provided on both end faces.

5. A built-in fuel tank structure for a linear guide rail according to claim 1, characterized in that: The slider oil tank (3), the drainage line (13), the transition hole (16), and the main oil supply line (14) extend downward in sequence as a whole; the paired branch oil supply lines (15) are located at the lower end of the main oil supply line (14).

6. The built-in fuel tank structure of a linear guide according to claim 1, wherein: The oil circuit system (4) is embedded with oil-absorbing felt.

7. A built-in fuel tank structure for a linear guide rail according to claim 1, characterized in that: The slider oil tank (3) is refilled with oil by adding oil from the side, top or end face of the sliding body (1).

8. A built-in fuel tank structure for a linear guide rail according to claim 1, characterized in that: The end cover oil tank (8) is refilled with oil by adding oil from the side, top or outer end face of the end cover (2).

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