Driving device of cutting machine

Abstract

The utility model relates to a driving device of a cutting machine. The driving device comprises a motor, an output shaft of the motor is connected with a driving gear; one side of the driving gear is connected with a self-lubricating gear; the self-lubricating gear is a driven wheel; and a plurality of oil storage holes are formed in the self-lubricating gear. The self-lubricating gear is arranged as a driven wheel, and lubricating oil stored in the self-lubricating gear is utilized, so that an ultrathin oil film can be formed on the surface of the spur rack, the lubricating requirement can be met for meshing of the driving gear and the spur rack, and the service life of the driving gear and the service life of the spur rack are greatly prolonged; meanwhile, the self-lubricating gear serves as a driven wheel and does not need to bear too much load, so that the oil outlet amount of the self-lubricating gear can be controlled to be smaller, and the problem that too much lubricating oil drips on a cut object is effectively solved; due to the structural arrangement of the driven wheel, a lubricating condition is provided for meshing of the driving gear and the spur rack in an indirect mode, the use amount of lubricating oil is further reduced, and it is further guaranteed that the lubricating oil cannot drip.

Description

Technical Field

[0001] This utility model relates to the field of cutting machines, and in particular to a cutting machine drive device. Background Technology

[0002] In the operating system of a cutting machine, the drive unit, as the core power transmission link, bears the heavy responsibility of driving the cutting blade to move accurately and efficiently. Currently, the industry widely adopts a gear and rack combination mode to achieve this goal. This transmission method has many advantages, such as a relatively compact structure, the ability to transmit a large force within a limited space, and a stable transmission ratio, which ensures high precision in the movement speed and displacement control of the cutting blade, meeting the stringent requirements of the cutting process for the accuracy of cutting dimensions.

[0003] However, the working characteristics of cutting machines present a thorny problem—the purity requirements for the cut materials are extremely high, and no lubricating oil droplets are allowed to fall onto them. Once lubricating oil contamination occurs, subsequent processing, use, and even product quality will be severely affected. Taking paper cutting as an example, even tiny oil droplets can cause uneven ink adhesion and paper sticking in subsequent stages such as printing and binding. In the field of food packaging material cutting, lubricating oil contamination can directly endanger food safety, rendering products unsaleable.

[0004] However, the combination of gears and racks inherently presents a sealing challenge. Because the two components need to slide and mesh relative to each other during operation, achieving a complete seal is difficult. The presence of gaps allows lubricating oil to easily leak out. Even with conventional sealing methods such as sealants and rubber seals, the sealing effect is still difficult to maintain for long periods under the combined effects of prolonged, high-intensity working pressure and mechanical vibration.

[0005] Given this, existing technology has reluctantly opted for a lubrication-free drive system. While this eliminates the risk of lubricating oil contaminating the workpiece at the source, it triggers a series of negative chain reactions, severely impacting the lifespan of the drive unit. First, in a lubrication-free environment, the coefficient of dry friction between the gear and rack increases dramatically. This means that every meshing and sliding action is accompanied by enormous frictional force, causing the wear rate of the gear surface to increase exponentially. Under normal lubrication conditions, the gear and rack can operate smoothly for tens or even hundreds of thousands of cycles, but under dry friction conditions, visible and severe wear may appear on the gear surface after only a few thousand cycles. This not only reduces transmission efficiency but also significantly reduces the movement accuracy of the cutting blade, affecting the cutting quality. Second, the large amount of heat generated by dry friction is difficult to dissipate. Due to the lack of heat dissipation and buffering effect from lubricating oil, the heat generated by friction accumulates rapidly in the meshing area of ​​the gear and rack, further exacerbating the thermal expansion of the material, reducing the clearance, and in turn, aggravating friction and wear. Prolonged exposure to high temperatures can also alter the material properties of gears and racks, such as reducing hardness and toughness, making them more prone to fatigue cracks and ultimately leading to component fracture and complete failure of the drive unit. Furthermore, during operation without lubrication, external dust, debris, and other impurities are easily attracted to and embedded in the meshing parts of the gears and racks. These impurities, like "grains of sand," continuously grind the tooth surface during dry friction, accelerating tooth wear and causing movement jamming, affecting the smooth movement of the cutting blade and increasing the scrap rate.

[0006] From an equipment maintenance and cost perspective, frequent drive unit failures mean high repair costs and frequent downtime. Frequent replacement of worn gears and racks not only requires the purchase of a large number of spare parts but also consumes specialized maintenance personnel. Furthermore, each downtime for repairs interrupts the production process, resulting in lost productivity and imposing a significant economic burden on the company. In addition, due to the short lifespan of the cutting machine's drive unit, companies often need to stockpile large quantities of spare parts in advance to maintain production, which ties up valuable cash flow and creates difficulties in cash flow and cost control.

[0007] In summary, while existing cutting machine drive devices meet the requirement of oil-free cutting materials, they suffer from a short service life. There is an urgent need for an innovative solution that can both ensure the purity of the cutting materials and extend the life of the drive device. Utility Model Content

[0008] To address the aforementioned problems in the prior art, this utility model provides a cutting machine drive device.

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] A cutting machine drive device includes a motor; a drive gear is connected to the output shaft of the motor; a self-lubricating gear is connected to one side of the drive gear; the self-lubricating gear is a driven gear; and the self-lubricating gear is provided with a plurality of oil storage holes.

[0011] Furthermore, the output shaft of the motor is connected to the drive gear via a reducer.

[0012] Furthermore, the reducer is mounted on a mounting plate; the mounting plate is fixedly mounted on the motor base; and the self-lubricating gear is connected to the motor base.

[0013] Furthermore, a gear connecting rod is connected to the middle of the self-lubricating gear; the end of the gear connecting rod is provided with a limiting screw to prevent the self-lubricating gear from disengaging.

[0014] Furthermore, the end of the gear connecting rod away from the self-lubricating gear is connected to a bearing housing via a bearing.

[0015] Furthermore, the gear connecting rod is provided with a retaining ring for a limiting bearing at its outer end near the bearing.

[0016] Furthermore, the self-lubricating gear is made of resin.

[0017] Furthermore, the self-lubricating gear is a powder metallurgy porous self-lubricating gear.

[0018] Furthermore, the oil reservoir is located at the root of the self-lubricating gear.

[0019] Furthermore, the oil reservoir is located on the side of the meshing teeth of the self-lubricating gear.

[0020] The beneficial effects of this invention are as follows: By setting a self-lubricating gear as the driven wheel, the lubricating oil stored in the self-lubricating gear allows an ultra-thin oil film to form on the surface of the rack, providing lubrication for the meshing of the drive gear and the rack, greatly increasing the service life of both. Simultaneously, as the driven wheel, the self-lubricating gear does not need to bear excessive load, allowing for a smaller oil output and effectively preventing excessive lubricating oil dripping onto the workpiece. In traditional structures, the self-lubricating gear directly acts as the drive wheel, bearing a certain load and using a squeezing method for lubrication, still resulting in oil dripping. In this invention, the driven wheel structure indirectly provides lubrication for the meshing of the drive gear and the rack. The lubricating oil stored in the self-lubricating gear supplies both itself and the drive gear, further reducing the amount of lubricating oil used and ensuring a safer lubricating oil dripping prevention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the cross-section of the self-lubricating gear of this utility model;

[0025] Figure 4 This is an exploded schematic diagram of the self-lubricating gear of this utility model;

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. Motor; 20. Reducer; 30. Mounting plate; 31. Motor mount; 40. Drive gear; 50. Self-lubricating gear; 51. Oil reservoir; 60. Gear connecting rod; 61. Limit screw; 62. Bearing; 63. Bearing housing; 64. Retaining ring. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Examples, such as Figures 1-4 As shown:

[0032] A cutting machine drive device includes a motor 10; a drive gear 40 is connected to the output shaft of the motor 10; in one embodiment, the output shaft of the motor 10 is connected to the drive gear 40 via a reducer 20; in another embodiment, the reducer 20 is mounted on a mounting plate 30, and the mounting plate 30 is fixedly mounted on a motor base 31; the motor base 31 is connected to the cutting blade of the cutting machine, and both the drive gear 40 and the self-lubricating gear 50 mesh with the rack of the cutting machine, driving the cutting blade to move via the motor 10; a self-lubricating gear 50 is connected to one side of the drive gear 40; the self-lubricating gear 50 is a driven gear; the self-lubricating gear 50 is provided with several oil storage holes 51; this utility model, by setting the self-lubricating gear 50 as a driven gear, utilizes the lubricating oil stored in the self-lubricating gear 50 to enable the surface of the rack to form A thin oil film is formed, providing lubrication for the meshing of the drive gear 40 and the rack, greatly increasing their service life. Simultaneously, the self-lubricating gear 50 acts as a driven wheel, requiring less load and allowing for more controlled oil output, effectively preventing excessive oil dripping onto the workpiece. In traditional structures, the self-lubricating gear 50 directly acts as the drive wheel, bearing a certain load and using compression for lubrication, still resulting in oil dripping. In this invention, the driven wheel structure indirectly provides lubrication for the meshing of the drive gear 40 and the rack. The lubricating oil stored in the self-lubricating gear 50 supplies both itself and the drive gear 40, further reducing oil usage and ensuring safer lubrication without dripping.

[0033] In one embodiment, a gear connecting rod 60 is connected to the middle of the self-lubricating gear 50; a limiting screw 61 is provided at the end of the gear connecting rod 60 to prevent the self-lubricating gear 50 from disengaging; the limiting screw 61 effectively ensures the position of the self-lubricating gear 50; a bearing seat 63 is connected to the end of the gear connecting rod 60 away from the self-lubricating gear 50 through a bearing 62; a retaining ring 64 for limiting the bearing 62 is provided at the outer end of the gear connecting rod 60 near the bearing 62; the bearing seat 63 is connected to the motor seat 31, thereby forming the mounting structure of the self-lubricating gear 50.

[0034] In one embodiment, the self-lubricating gear 50 is made of resin. By making the self-lubricating gear 50 of resin, the cost is lower, but it has more oil storage capacity after being soaked in lubricating oil, thereby providing a longer lubrication effect. At the same time, the self-lubricating gear 50 of resin material is more likely to contact the rack and form an oil film under low load, and has better adaptability.

[0035] In one embodiment, the self-lubricating gear 50 is a powder metallurgy porous self-lubricating gear 50, which has a higher cost than the previous embodiment;

[0036] In one embodiment, the oil reservoir 51 is located at the root of the self-lubricating gear 50, so that during lubrication, the oil outlet is formed at the tip of the rack tooth, making it easier to form a lubrication fit with the drive gear 40.

[0037] In one embodiment, the oil reservoir 51 may be disposed on the side of the meshing teeth of the self-lubricating gear 50.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A cutting machine drive device, characterized in that: Includes a motor (10); a drive gear (40) is connected to the output shaft of the motor (10); a self-lubricating gear (50) is connected to one side of the drive gear (40); the self-lubricating gear (50) is a driven gear; the self-lubricating gear (50) is provided with several oil storage holes (51); the oil storage holes (51) are located at the tooth root of the self-lubricating gear (50), and the lubricating oil stored in the self-lubricating gear (50) needs to supply itself on the one hand and the drive gear (40) on the other hand, which reduces the amount of lubricating oil used and ensures that the lubricating oil will not drip.

2. The cutting machine drive device according to claim 1, characterized in that: The output shaft of the motor (10) is connected to the drive gear (40) via a reducer (20).

3. The cutting machine drive device according to claim 2, characterized in that: The reducer (20) is mounted on the mounting plate (30); the mounting plate (30) is fixedly mounted on the motor base (31); the self-lubricating gear (50) is connected to the motor base (31).

4. The cutting machine drive device according to claim 1, characterized in that: The self-lubricating gear (50) is connected to a gear connecting rod (60) at its middle part; the end of the gear connecting rod (60) is provided with a limiting screw (61) to prevent the self-lubricating gear (50) from disengaging.

5. A cutting machine drive device according to claim 4, characterized in that: The end of the gear connecting rod (60) away from the self-lubricating gear (50) is connected to a bearing housing (63) via a bearing (62).

6. A cutting machine drive device according to claim 5, characterized in that: The gear connecting rod (60) is provided with a retaining ring (64) of the limiting bearing (62) at the outer end near the bearing (62).

7. A cutting machine drive device according to claim 1, characterized in that: The self-lubricating gear (50) is made of resin.

8. A cutting machine drive device according to claim 1, characterized in that: The self-lubricating gear (50) is a powder metallurgy porous self-lubricating gear (50).

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