阅读说明：本技术 一种用于机械配件加工的磨边机 (A edging machine for machine part processing ) 是由 张一� 史丰荣 徐宗刚 张宁 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种用于机械配件加工的磨边机,涉及机械加工技术领域,包括基板,基板上的两端分别固定连接第一立板和第二立板,还包括：设置于工作台和基板之间的打磨驱动箱,打磨驱动箱内设有打磨驱动组件,其中打磨驱动组件包括打磨驱动机构和移位切换机构；配件压紧机构用于对机械配件压紧夹持固定；打磨面切换组件包括配件转向机构和打磨升降机构,本发明通过设置与打磨驱动组件和配件压紧机构配合使用的打磨面切换组件能够实现对多个打磨面依次切换进行打磨的效果,自动化程度高,对板材的边缘打磨速度快且效率,易于使用操作。(The invention discloses an edge grinding machine for machining mechanical parts, which relates to the technical field of machining, and comprises a base plate, wherein two ends of the base plate are respectively and fixedly connected with a first vertical plate and a second vertical plate, and the edge grinding machine also comprises: the polishing driving box is arranged between the workbench and the base plate, and a polishing driving assembly is arranged in the polishing driving box and comprises a polishing driving mechanism and a displacement switching mechanism; the accessory pressing mechanism is used for pressing, clamping and fixing the mechanical accessory; the polishing surface switching assembly comprises an accessory steering mechanism and a polishing lifting mechanism, can realize the effect of sequentially switching a plurality of polishing surfaces for polishing by arranging the polishing surface switching assembly which is used in cooperation with the polishing driving assembly and the accessory pressing mechanism, has high automation degree, and is high in edge polishing speed and efficiency for plates, and easy to use and operate.)

1. The utility model provides an edging machine for machine parts processing, includes the base plate, both ends difference first riser of fixed connection and second riser on the base plate, and wherein one side fixedly connected with workstation that first riser is close to the second riser, its characterized in that still includes:

the polishing driving box is arranged between the workbench and the substrate, and a polishing driving assembly is arranged in the polishing driving box and comprises a polishing driving mechanism;

the accessory pressing mechanism is arranged between the first vertical plate and the second vertical plate and comprises a first side clamping mechanism and a second side clamping mechanism which are used for pressing, clamping and fixing the mechanical accessory, and the first side clamping mechanism and the second side clamping mechanism are respectively positioned on two sides of the accessory;

the polishing surface switching assembly comprises an accessory steering mechanism and a polishing lifting mechanism, and the polishing lifting mechanism is connected with the polishing driving assembly;

the driving device drives the polishing lifting mechanism and the accessory steering mechanism to synchronously link, and the accessory steering mechanism drives the accessory to be polished to rotate for flanging through the first side clamping mechanism.

2. The edge grinding machine for machining of mechanical accessories of claim 1, wherein the grinding driving mechanism comprises a mounting frame and a mounting plate which are fixedly arranged on the sliding table, a first rotating shaft and a second rotating shaft penetrate through and are rotatably connected to the mounting frame, the adjacent ends of the first rotating shaft and the second rotating shaft are respectively and coaxially and fixedly connected with a first linkage cone pulley and a second linkage cone pulley, the first linkage cone pulley is meshed with the second linkage cone pulley and is connected with the first grinding piece through fixed connection at the other end of the first linkage cone pulley, a second grinding piece is arranged on one side of the first grinding piece and is connected with the second rotating shaft, and a driving piece for driving the second rotating shaft to rotate is fixedly mounted on the mounting plate.

3. The edge grinding machine for machining of accessories according to claim 2, wherein said grinding drive assembly further comprises a shift switching mechanism for driving the grinding drive mechanism to perform grinding in a plurality of ways, wherein:

the shifting switching mechanism comprises a lifting carrying platform arranged in the polishing driving box, a sliding groove is formed in the lifting carrying platform, the sliding groove is connected with a sliding table in a sliding mode, a shifting motor is fixedly connected in the lifting carrying platform on one side of the sliding groove, an output shaft of the shifting motor is fixedly connected with a driving screw rod, and the driving screw rod penetrates through the sliding table and is in threaded connection with the sliding table.

4. The edge grinding machine for machining of mechanical parts according to claim 1, wherein the first side clamping mechanism comprises a first telescopic rod fixedly arranged on the first vertical plate, a telescopic end of the first telescopic rod is fixedly connected with a first pressing rod, one end, away from the first telescopic rod, of the first pressing rod is rotatably connected with a first pressing block, the second side clamping mechanism comprises a second telescopic rod fixedly arranged on the second vertical plate, a telescopic end of the second telescopic rod is rotatably connected with a second pressing rod, and one end, away from the second telescopic rod, of the second pressing rod is fixedly connected with a second pressing block.

5. The edge grinding machine for machining the mechanical parts according to claim 4, wherein the part steering mechanism comprises a gear driving mechanism and a synchronous guiding movement mechanism, wherein the gear driving mechanism comprises a driving gear disc fixedly arranged at the output end of the driving device, the driving gear disc is engaged and connected with a driven gear disc, the driven gear disc coaxially penetrates through and is fixedly connected with a rotating sleeve, and the rotating sleeve is sleeved outside the second pressing rod and is fixedly connected with the second vertical plate.

6. The edge grinding machine for machining of mechanical parts according to claim 5, wherein the synchronous guiding movement mechanism comprises a synchronous protrusion fixedly arranged on the inner side of the rotating sleeve, and a synchronous guide groove corresponding to the synchronous protrusion is formed in the outer portion of the second pressing rod.

7. The edge grinding machine for machining of mechanical parts according to claim 1, wherein the grinding lifting mechanism comprises a driving cone pulley coaxially and fixedly connected with the driving gear disc, the driving cone pulley is meshed with the upper cone pulley, the upper cone pulley is coaxially and fixedly connected with a first linkage shaft, one end of the first linkage shaft, which is far away from the upper cone pulley, is connected with a lifting conversion driving mechanism, the lifting conversion driving mechanism is fixedly connected with a second linkage shaft, one end of the second linkage shaft is connected with a lifting driving gear, the end part of the lifting carrying platform is fixedly connected with a lifting toothed plate, and the lifting driving gear is meshed with the lifting toothed plate.

8. The edge grinding machine for machining of mechanical parts according to claim 7, wherein the lifting conversion driving mechanism comprises a lower cone pulley which is coaxially and fixedly connected with a first linkage shaft, a first side cone pulley and a second side cone pulley are engaged and connected with two sides of the lower cone pulley, a second linkage shaft coaxially penetrates through the first side cone pulley and the second side cone pulley and is fixedly connected with the first side cone pulley and the second side cone pulley, the driving cone pulley, the upper cone pulley, the first side cone pulley and the second side cone pulley are all-tooth cone pulleys, and the lower cone pulley is a non-all-tooth cone pulley.

Technical Field

The invention relates to the technical field of machining, in particular to an edge grinding machine for machining mechanical parts.

Background

For a square plate, the square plate is applied to various devices, and is often cut in a whole plate, after the square plate is cut and formed, four sides of the square plate are provided with burrs, and the burrs need to be removed through a grinding device during fine machining.

However, the traditional polishing means has too large limitation, generally adopts a manual polishing mode, specifically, an operator holds polishing equipment to polish the plate,

when the four edges of the panel piece are polished, the polishing surface needs to be frequently switched, and when the polishing surface is switched, the panel piece and the polishing device need to be independently and separately moved, linkage type automatic operation is difficult to perform, certain defects exist, and further improvement is needed.

Disclosure of Invention

The invention provides an edge grinding machine for machining mechanical parts, which solves the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides an edging machine for machine parts processing, includes the base plate, both ends difference first riser of fixed connection and second riser on the base plate, and wherein one side fixedly connected with workstation that first riser is close to the second riser still includes:

the polishing driving box is arranged between the workbench and the substrate, and a polishing driving assembly is arranged in the polishing driving box and comprises a polishing driving mechanism;

the accessory pressing mechanism is arranged between the first vertical plate and the second vertical plate and comprises a first side clamping mechanism and a second side clamping mechanism, and the first side clamping mechanism and the second side clamping mechanism are respectively positioned at two sides of the accessory and are used for pressing, clamping and fixing the mechanical accessory;

the grinding surface switching assembly comprises an accessory steering mechanism and a grinding lifting mechanism, the accessory steering mechanism is connected with the first side clamping mechanism, and the grinding lifting mechanism is connected with the grinding driving assembly;

drive arrangement, drive arrangement drive elevating system and accessory steering mechanism synchronous linkage of polishing specifically do:

the driving device drives the grinding driving mechanism to descend firstly, then the driving device drives the accessory steering mechanism to enable the first side clamping mechanism to drive the accessory to be ground to rotate for flanging, and then the driving device drives the grinding lifting mechanism to enable the grinding driving mechanism to ascend to grind the accessory.

As a preferred technical solution of the present invention, the polishing driving mechanism includes a mounting bracket and a mounting plate fixedly disposed on the sliding table, the mounting bracket is connected with a first rotating shaft and a second rotating shaft in a penetrating manner, adjacent ends of the first rotating shaft and the second rotating shaft are respectively and coaxially and fixedly connected with a first linkage cone pulley and a second linkage cone pulley, the first linkage cone pulley is meshed with the second linkage cone pulley, the other end of the first linkage cone pulley is fixedly connected with a first polishing member, one side of the first polishing member is provided with a second polishing member, the second polishing member is connected with the second rotating shaft, and a driving member for driving the second rotating shaft to rotate is fixedly mounted on the mounting plate.

As a preferred technical solution of the present invention, the polishing driving assembly further includes a displacement switching mechanism, and the displacement switching mechanism drives the polishing driving mechanism to perform polishing in multiple manners, wherein:

the shifting switching mechanism comprises a lifting carrying platform arranged in the polishing driving box, a sliding groove is formed in the lifting carrying platform, the sliding groove is connected with a sliding table in a sliding mode, a shifting motor is fixedly connected in the lifting carrying platform on one side of the sliding groove, an output shaft of the shifting motor is fixedly connected with a driving screw rod, and the driving screw rod penetrates through the sliding table and is in threaded connection with the sliding table.

As a preferred technical solution of the present invention, the first side clamping mechanism includes a first telescopic rod fixedly disposed on the first vertical plate, a telescopic end of the first telescopic rod is fixedly connected to a first pressing rod, an end of the first pressing rod away from the first telescopic rod is rotatably connected to a first pressing block, the second side clamping mechanism includes a second telescopic rod fixedly disposed on the second vertical plate, a telescopic end of the second telescopic rod is rotatably connected to a second pressing rod, and an end of the second pressing rod away from the second telescopic rod is fixedly connected to a second pressing block.

As a preferred technical solution of the present invention, the accessory steering mechanism includes a gear driving mechanism and a synchronous guiding movement mechanism, wherein the gear driving mechanism includes an active gear plate fixedly disposed at an output end of the driving device, the active gear plate is engaged with a passive gear plate, the passive gear plate coaxially penetrates and is fixedly connected with a rotating sleeve, and the rotating sleeve is sleeved outside the second pressing rod and is fixedly connected with the second vertical plate.

As a preferred technical scheme of the present invention, the synchronous guiding movement mechanism includes a synchronous protrusion fixedly disposed on an inner side of the rotating sleeve, and a synchronous guide groove corresponding to the synchronous protrusion is formed outside the second pressing rod.

As a preferred technical scheme of the invention, the polishing lifting mechanism comprises a driving cone pulley coaxially and fixedly connected with a driving gear disc, the driving cone pulley is meshed with the upper cone pulley, the upper cone pulley is coaxially and fixedly connected with a first linkage shaft, one end of the first linkage shaft, which is far away from the upper cone pulley, is connected with a lifting conversion driving mechanism, the lifting conversion driving mechanism is fixedly connected with a second linkage shaft, one end of the second linkage shaft is connected with a lifting driving gear, the end part of the lifting carrying platform is fixedly connected with a lifting toothed plate, and the lifting driving gear is meshed with the lifting toothed plate.

As a preferred technical scheme of the present invention, the lifting conversion driving mechanism includes a lower cone pulley coaxially and fixedly connected to the first linkage shaft, two sides of the lower cone pulley are engaged with the first side cone pulley and the second side cone pulley, the second linkage shaft coaxially penetrates through and is fixedly connected to the first side cone pulley and the second side cone pulley, the driving cone pulley, the upper cone pulley, the first side cone pulley and the second side cone pulley are all full-tooth cone pulleys, and the lower cone pulley is a non-full-tooth cone pulley.

The invention has the following advantages: according to the invention, the polishing driving mechanism is driven to descend by the driving device, then the driving device drives the accessory steering mechanism to enable the first side clamping mechanism to drive the accessory to be polished to rotate to turn over the edge, then the driving device drives the polishing lifting mechanism to enable the polishing driving mechanism to ascend to polish the accessory, the effect of sequentially switching a plurality of polishing surfaces to polish can be realized, the automation degree is high, the edge polishing speed and efficiency of the plate are high, and the use and the operation are easy.

Drawings

Fig. 1 is a schematic structural diagram of an edge grinding machine for machining a mechanical accessory.

Fig. 2 is a schematic structural diagram of a grinding driving assembly in an edge grinding machine for machining a mechanical accessory.

Fig. 3 is a schematic structural view of a rotary sleeve in an edge grinding machine for machining a mechanical accessory.

In the figure: 1. a substrate; 2. a first vertical plate; 3. a second vertical plate; 4. a work table; 5. a first telescopic rod; 6. a first hold down bar; 7. a second telescopic rod; 8. a second hold down bar; 9. a first pressing block; 10. a second pressing block; 11. grinding an edge opening; 12. polishing the driving box; 13. a drive device; 14. a driving gear plate; 15. a driving cone pulley; 16. rotating the sleeve; 17. a driven gear plate; 18. an upper cone pulley; 19. a first linkage shaft; 20. a lower cone pulley; 21. a first side cone pulley; 22. a second side cone pulley; 23. a second linkage shaft; 24. a lifting drive gear; 25. a lifting toothed plate; 26. lifting the carrying platform; 27. a sliding groove; 28. a sliding table; 29. a mounting frame; 30. a first rotating shaft; 31. a first abrasive article; 32. a first linkage cone pulley; 33. a second linkage cone pulley; 34. a second rotating shaft; 35. a second polishing member; 36. mounting a plate; 37. a drive member; 38. a drive screw; 39. a displacement motor; 40. a guide bar; 41. and a synchronous guide groove.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-3, an edge grinding machine for machining of machine parts includes a substrate 1, a first vertical plate 2 and a second vertical plate 3 fixedly connected to two ends of the substrate 1 respectively, wherein the first vertical plate 2 is fixedly connected to a working table 4 on one side close to the second vertical plate 3, and further includes:

a grinding driving box 12 arranged between the workbench 4 and the substrate 1, wherein a grinding driving component is arranged in the grinding driving box 12, the grinding driving component comprises a grinding driving mechanism, and an edge grinding opening 11 corresponding to the grinding driving mechanism is formed in the workbench 4;

the accessory pressing mechanism is arranged between the first vertical plate 2 and the second vertical plate 3 and comprises a first side clamping mechanism and a second side clamping mechanism, and the first side clamping mechanism and the second side clamping mechanism are respectively located on two sides of an accessory. The clamping fixture is used for clamping and fixing the mechanical accessory;

as a preferred technical solution of the present invention, the first side clamping mechanism includes a first telescopic rod 5 fixedly disposed on the first vertical plate 2, a telescopic end of the first telescopic rod 5 is fixedly connected to a first pressing rod 6, one end of the first pressing rod 6 away from the first telescopic rod 5 is rotatably connected to a first pressing block 9, the second side clamping mechanism includes a second telescopic rod 7 fixedly disposed on the second vertical plate 3, a telescopic end of the second telescopic rod 7 is rotatably connected to a second pressing rod 8, and one end of the second pressing rod 8 away from the second telescopic rod 7 is fixedly connected to a second pressing block 10.

The grinding surface switching assembly comprises an accessory steering mechanism and a grinding lifting mechanism, the accessory steering mechanism is connected with the first side clamping mechanism, and the grinding lifting mechanism is connected with the grinding driving assembly;

drive arrangement 13, drive arrangement 13 drive elevating system and accessory steering mechanism synchronous linkage of polishing specifically are:

the driving device drives the grinding driving mechanism to descend firstly, then the driving device drives the accessory steering mechanism to enable the first side clamping mechanism to drive the accessory to be ground to rotate for flanging, and then the driving device drives the grinding lifting mechanism to enable the grinding driving mechanism to ascend to grind the accessory.

In one embodiment, the drive device is a first drive motor.

Above-mentioned technical scheme is when implementing, starts first driving motor, utilizes the mobile device drive elevating system that polishes to make the actuating mechanism that polishes descend, for the turn-over of accessory provides the space, and first driving motor drive accessory steering mechanism operation after that, accessory steering mechanism drive first side clamping mechanism makes the accessory turn-over, and first driving motor drive elevating system that polishes drives the drive mechanism that polishes after that and rises and polish the accessory. The working process is completely driven to operate in a linkage mode by the aid of the first driving motor.

The polishing driving mechanism comprises a mounting frame 29 and a mounting plate 36 which are fixedly arranged on the sliding table 28, a first rotating shaft 30 and a second rotating shaft 34 penetrate through and are connected to the mounting frame 29 in a rotating mode, the adjacent ends of the first rotating shaft 30 and the second rotating shaft 34 are respectively connected with a first linkage conical pulley 32 and a second linkage conical pulley 33 in a coaxial and fixed mode, the first linkage conical pulley 32 is connected with the second linkage conical pulley 33 in a meshed mode, the other end of the first linkage conical pulley 32 is fixedly connected with a first polishing piece 31, one side of the first polishing piece 31 is provided with a second polishing piece 35, the second polishing piece 35 is connected with the second rotating shaft 34, and a driving piece 37 used for driving the second rotating shaft 34 to rotate is fixedly mounted on the mounting plate 36.

In a preferred embodiment of the present invention, the driving member 37 includes a second driving motor, and an output shaft of the second driving motor is in transmission connection with the second rotating shaft 34.

As a preferred embodiment of the present invention, the first polishing member 31 is a polishing disc, and the second polishing member 35 is a polishing belt.

As a preferred technical solution of the present invention, the polishing driving assembly further includes a displacement switching mechanism, and the displacement switching mechanism drives the polishing driving mechanism to perform polishing in multiple manners, wherein:

the shifting switching mechanism comprises an elevating carrier 26 arranged in the polishing drive box 12, a sliding groove 27 is formed in the elevating carrier 26, the sliding table 28 is connected in the sliding groove 27 in a sliding mode, a shifting motor 39 is fixedly connected in the elevating carrier 26 on one side of the sliding groove 27, an output shaft of the shifting motor 39 is fixedly connected with a driving screw 38, and the driving screw 38 penetrates through the sliding table 28 and is in threaded connection with the sliding table 28.

In one embodiment, the displacement motor 39 and the drive screw 38 may be replaced with a hydraulic cylinder, and the displacement may be controlled by connecting the hydraulic cylinder to the slide table 28.

In one embodiment, the guide rods 40 are slidably connected to four corners of the elevating stage 26, and the guide rods 40 are fixedly connected to the substrate 1.

The polishing surface switching assembly comprises an accessory steering mechanism and a polishing lifting mechanism, the polishing driving assembly is lifted through the polishing lifting mechanism, and the accessory steering mechanism is used for driving an accessory pressing mechanism to enable an accessory to steer. The accessory steering mechanism can switch the rotation of a plurality of surfaces of the plate, so that the plate can be sequentially polished by the polishing driving mechanism.

The accessory steering mechanism comprises a gear driving mechanism and a synchronous guiding movement mechanism, wherein the gear driving mechanism comprises a driving gear disc 14 fixedly arranged at the output end of the driving device 13, the driving gear disc 14 is meshed with a driven gear disc 17, the driven gear disc 17 coaxially penetrates through and is fixedly connected with a rotating sleeve 16, and the rotating sleeve 16 is sleeved outside the second pressing rod 8 and is fixedly connected with the second vertical plate 3. The synchronous guiding movement mechanism comprises a synchronous protrusion fixedly arranged on the inner side of the rotating sleeve 16, and a synchronous guide groove 41 corresponding to the synchronous protrusion is formed in the outer portion of the second pressing rod 8.

Wherein, the driving gear plate 14 is distributed with one fourth of teeth, and the driven gear plate 17 is distributed with teeth on the upper circumference. The driving gear plate 14 can be intermittently meshed with the driven gear plate 17 when rotating.

The polishing lifting mechanism comprises a driving cone pulley 15 which is coaxially and fixedly connected with a driving gear disc 14, the driving cone pulley 15 is meshed with the upper cone pulley 18, the upper cone pulley 18 is coaxially and fixedly connected with a first linkage shaft 19, one end, far away from the upper cone pulley 18, of the first linkage shaft 19 is connected with a lifting conversion driving mechanism, the lifting conversion driving mechanism is fixedly connected with a second linkage shaft 23, one end of the second linkage shaft 23 is connected with a lifting driving gear 24, the end part of a lifting carrying platform 26 is fixedly connected with a lifting toothed plate 25, and the lifting driving gear 24 is meshed with the lifting toothed plate 25. The lifting conversion driving mechanism comprises a lower cone pulley 20 which is coaxially and fixedly connected with a first linkage shaft 19, a first side cone pulley 21 and a second side cone pulley 22 are connected to two sides of the lower cone pulley 20 in a meshed mode, a second linkage shaft 23 coaxially penetrates through the first side cone pulley 21 and the second side cone pulley 22 and is fixedly connected with the first side cone pulley and the second side cone pulley 22, the driving cone pulley 15, the upper cone pulley 18, the first side cone pulley 21 and the second side cone pulley 22 are all full-tooth cone pulleys, and the lower cone pulley 20 is a non-full-tooth cone pulley.

In one embodiment of this embodiment, the teeth on the lower cone pulley 20 are distributed in a semi-circular arc. When lower cone pulley 20 rotates towards a direction, with the equal intermittent type nature meshing of first side cone pulley 21 and second side cone pulley 22 to can drive second linkage 23 and carry out positive and negative reciprocating rotation, and then make lift drive gear 24 carry out positive and negative rotation, drive lifting teeth plate 25 and carry out reciprocal lift.

Specifically, the method comprises the following steps: before waiting to polish panel and rotating, the lifting tooth plate 25 drives the drive assembly that polishes and wholly moves down, and after waiting to polish that panel rotates and finishes, the lifting tooth plate 25 drives the drive assembly that polishes and wholly moves up, utilizes the abrasive band of polishing or polishes to carry out the edging to panel.

Example 2

Referring to fig. 1-3, the other contents of the present embodiment are the same as the embodiments, except that: a fixed support is fixedly arranged on the base plate 1, the second linkage shaft 23 is rotatably connected with the fixed support, a fixed support plate is fixedly connected to the side edge of the second vertical plate 3, and the first linkage shaft 19 penetrates through the fixed support plate and is rotatably connected with the fixed support plate.

In the implementation process of the invention, firstly, the first telescopic rod 5 and the second telescopic rod 7 are utilized to drive the first pressing block 9 and the second pressing block 10 to tightly press and fix the plate to be polished, then the grinding disc or the grinding abrasive belt is used for edging the plate, when the next edge of the plate is required to be edged, the first driving motor is controlled to drive the driving gear disc 14 to rotate, firstly, the driving gear disc 14 drives the first side cone pulley 21 to rotate through the driving cone pulley 15, the upper cone pulley 18 and the lower cone pulley 20, so that the lifting toothed plate 25 drives the grinding driving component to move downwards, then the driving gear plate 14 is engaged with the driven gear plate 17 to drive the plate to rotate, the switching of the edge to be polished is realized, then the driving gear plate 14 drives the driving cone pulley 15 to mesh with the upper cone pulley 18, drives the lower cone pulley 20 to mesh with the second side cone pulley 22, so that the lifting driving gear 24 turns over, drives the polishing driving component to move upwards, and polishes the plate.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.