Variable-pitch sliding table

Abstract

The utility model discloses a variable-pitch sliding table which comprises a driving mechanism, a fixing seat, a cam shaft and a plurality of sliding blocks. The cam shaft is rotatably arranged in the fixed seat, cam grooves in one-to-one correspondence with the sliding blocks are formed in the cam shaft, cam followers are arranged at the lower ends of the sliding blocks, the cam followers are in sliding connection with the cam grooves, and each cam follower comprises an eccentric shaft; a first oil injection channel is formed in the sliding block and can communicate with an external oil injection pipe. The upper end of the second oil injection channel communicates with the first oil injection channel, and the lower end of the second oil injection channel communicates with the cam groove. The oil injection channel is arranged in the sliding block and the eccentric shaft and is matched with the marble oil cup, so that the problems that lubricating oil of the variable-pitch module is inconvenient to inject and potential safety hazards exist are effectively solved; the dust shield and the side plates are additionally arranged, and the connecting structures of the dust shield and the side plates and the sliding blocks are reasonably designed, so that foreign matters can be effectively prevented from entering the cam groove, transmission part abrasion is reduced, and equipment operation stability and service life are improved.

Description

Technical Field

[0001] This utility model relates to the field of linear module technology, and in particular to a variable pitch slide table. Background Technology

[0002] Cam-groove shaft type variable pitch modules can achieve pitch changes for multiple suction heads or cylinders, which can be equal or unequal. When handling multiple loads (more than four), cam-groove shaft type variable pitch modules are more compact and economical than other structures. With the development of automation technology, cam-groove shaft type variable pitch modules have been widely used in various equipment.

[0003] Chinese patent document CN116255216A discloses a cam groove shaft type variable pitch linear module, including: a fixed base; a drive mechanism disposed on the fixed base; a cam groove shaft connected to the output shaft of the drive mechanism, wherein the cam groove shaft is provided with a cam groove; a slider, wherein a cam follower is fixed at the bottom end of the slider and the cam follower is slidably connected to the cam groove; a connecting rod fixed to the upper side of the cam groove shaft, wherein a slider slidably connected to the connecting rod is sleeved on the connecting rod. The spherical shape of the cam follower can reduce the size requirements of the cam groove, and the cam follower is provided with a gap elimination device, wherein the gap between the cam follower and the cam groove can be eliminated by using an eccentric shaft. However, this module still has obvious defects: First, the cam groove is directly exposed to the external environment, and dust, debris and other foreign objects are easily trapped in it during equipment operation, which leads to wear of transmission components and affects the stability and service life of the equipment. Second, in the equipment maintenance process, in order to reduce the friction between the cam follower and the cam groove, lubricating oil needs to be injected into the cam groove. During the injection process, the camshaft needs to be rotated to ensure that the lubricating oil is evenly distributed. This operation poses a safety hazard of pinching the operator, which not only increases the maintenance risk, but also reduces the convenience and efficiency of equipment maintenance. Summary of the Invention

[0004] According to an embodiment of the present invention, a variable pitch slide table is provided, comprising a drive mechanism, a fixed base, a camshaft, and a plurality of sliders; the camshaft is rotatably disposed within the fixed base, and the camshaft is provided with cam grooves corresponding one-to-one with the plurality of sliders; a cam follower is provided at the lower end of the slider, the cam follower being slidably connected to the cam grooves, and the cam follower including an eccentric shaft; a first oil injection channel is provided within the slider, the first oil injection channel being able to communicate with an external oil injection pipe; a second oil injection channel is provided within the eccentric shaft, the upper end of the second oil injection channel communicating with the first oil injection channel and the lower end communicating with the cam grooves.

[0005] Furthermore, an oil inlet is provided at each end of the slider, and a ball oil cup is provided inside the oil inlet.

[0006] Furthermore, a dust cover is provided above the slider, with both ends detachably connected to the ends of the mounting base.

[0007] Furthermore, a side panel is provided on each side of the dust shield.

[0008] Furthermore, a groove is provided at each end of the slider, the groove corresponds to the side plate, the lower end of the side plate is located in the groove and does not contact the groove.

[0009] According to the embodiment of this utility model, the variable pitch slide table effectively solves the problem of inconvenient lubrication and safety hazards of variable pitch module by setting oil injection channels in the slider and eccentric shaft and cooperating with ball oil cups; the addition of dust shield and side plate, and the reasonable design of their connection structure with the slider, can effectively prevent foreign objects from entering the cam groove, reduce the wear of transmission components, and improve the stability and service life of the equipment.

[0010] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0011] Figure 1 This is a perspective view according to an embodiment of the present utility model;

[0012] Figure 2 This is a top view according to an embodiment of the present utility model;

[0013] Figure 3 for Figure 2 Sectional view along axis AA;

[0014] Figure 4 This is a perspective view of the variable pitch slide table according to an embodiment of the present utility model after removing the dust cover.

[0015] Figure 5 for Figure 4 Enlarged view of point B. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.

[0017] First, combine Figures 1-5 The variable pitch slide table according to the embodiments of the present invention is used in automated production lines and has a wide range of applications.

[0018] like Figures 1-5As shown, the variable pitch slide table of this utility model embodiment includes a drive mechanism 1, a fixed base 2, a camshaft 3, and a plurality of sliders 4; the camshaft 3 is rotatably disposed in the fixed base 2, and the camshaft 3 is provided with cam grooves 31 corresponding one-to-one with the plurality of sliders 4; a cam follower 5 is provided at the lower end of the slider 4, and the cam follower 5 is slidably connected to the cam grooves 31; the cam follower 5 includes an eccentric shaft 51; a first oil injection channel 41 is provided in the slider 4, and the first oil injection channel 41 can be connected to an external oil injection pipe; a second oil injection channel 511 is provided in the eccentric shaft 51, and the upper end of the second oil injection channel 511 is connected to the first oil injection channel 41 and the lower end is connected to the cam groove 31.

[0019] Furthermore, the drive mechanism 1 is a servo motor.

[0020] Furthermore, such as Figure 3 As shown, in this embodiment, each end of the slider 4 is provided with an oil inlet 43, which is connected to the first oil filling channel 41. A ball-shaped oil cup 6 is provided inside the oil inlet 43. The ball-shaped oil cup 6 facilitates the control of the amount of lubricating oil added, prevents excessive lubricating oil from overflowing and causing waste and pollution, and at the same time, the ball-shaped oil cup 6 can close the oil inlet 43 when not adding oil to prevent dust and other foreign objects from entering the oil filling channel.

[0021] Furthermore, such as Figures 1-3 As shown, in this embodiment, a dust shield 7 is disposed above the slider 4, and its two ends are detachably connected to the two ends of the fixed base 2. The dust shield 7 can effectively prevent external dust, debris and other foreign objects from falling into the cam groove 31, reduce the wear of transmission components, and improve the stability and service life of the equipment.

[0022] Furthermore, such as Figure 1 , 3 As shown, in this embodiment, a side plate 71 is provided on each side of the dust shield 7.

[0023] Furthermore, such as Figure 3 , 5 As shown, in this embodiment, a groove 42 is provided at each end of the slider 4. The groove 42 corresponds to the side plate 71, and the lower end of the side plate 71 is located inside the groove 42 but does not contact the groove 42. This structural design further enhances the dustproof effect, and since the side plate 71 does not contact the groove 42, it will not affect the normal movement of the slider 4.

[0024] Working principle:

[0025] During equipment operation, the drive mechanism 1 drives the camshaft 3 to rotate. The cam groove 31 on the camshaft 3, through cooperation with the cam follower 5, converts the rotational motion into the linear motion of the slider 4, thereby realizing the pitch change function.

[0026] When lubrication maintenance of the cam groove 31 is required, lubricating oil is injected into the first oil injection channel 41 through the external oil injection pipe. The lubricating oil flows through the first oil injection channel 41 into the second oil injection channel 511 inside the eccentric shaft 51, and finally flows into the cam groove 31, thereby lubricating the cam groove 31 and the cam follower 5. The oil injection port 43 is located at both ends of the slider 4, which effectively avoids the risk of operators being pinched.

[0027] Above, refer to Figures 1-5 The present invention describes a variable pitch slide table according to an embodiment of the present invention. By setting an oil injection channel in the slider 4 and the eccentric shaft 51, and cooperating with the ball oil cup 6, the problem of inconvenient lubrication and safety hazards of the variable pitch module is effectively solved. The addition of a dust shield 7 and a side plate 71, and the reasonable design of their connection structure with the slider 4, can effectively prevent foreign objects from entering the cam groove 31, reduce the wear of transmission components, and improve the stability and service life of the equipment.

[0028] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.

[0029] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A variable distance sliding table, comprising a driving mechanism, a fixed base, a camshaft and a plurality of sliding blocks; the camshaft is rotatably arranged in the fixed base, the camshaft is provided with a plurality of cam grooves corresponding to the plurality of sliding blocks, the lower end of the sliding block is provided with a cam follower, the cam follower is in sliding connection with the cam groove, and the cam follower comprises an eccentric shaft. The first oil injection channel is arranged in the slider and can be communicated with an external oil injection pipe; the second oil injection channel is arranged in the eccentric shaft, the upper end of the second oil injection channel is communicated with the first oil injection channel, and the lower end of the second oil injection channel is communicated with the cam groove.

2. The variable distance slide of claim 1, wherein, An oil injection port is arranged at each end of the slider, and a marble oil cup is arranged in the oil injection port.

3. The variable distance slide of claim 1, wherein, A dust shield is arranged above the slider and detachably connected with both ends of the fixed seat.

4. The variable distance slide of claim 3, wherein, A side plate is arranged at each side of the dust shield.

5. The variable distance slide of claim 4, wherein, A sliding groove is arranged at each end of the slider, the sliding groove corresponds to the side plate, the lower end of the side plate is located in the sliding groove, and the side plate does not contact the sliding groove.

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