Monorail cutting machine cutting device and method for eliminating the gap between the bearing and the guide rail

Abstract

The invention relates to a monorail cutting machine cutting device capable of eliminating the gap between the bearing and the guide rail, automatically opening the pressing block, preventing the handle from loosening and dust from entering the slide frame, and a method for eliminating the gap between the bearing and the guide rail, comprising a monorail and a cutting device, two bearing groups are arranged on the left and right sides of the left slide frame and the right slide frame in the cutting device, the two bearing groups are located at the two ends of the push plate through a shaft, the two push plates are fixed on the left slide frame and the right slide frame respectively, an elastic plastic piece is arranged between the right slide frame or the left slide frame and the push plate, the upper bearing group and the lower bearing group are respectively installed in the shaft seat of the left slide frame and the right slide frame through a shaft, and the bearing groups in the upper bearing group and the lower bearing group are respectively in contact with the guide rail, and the anti-loose screw is used for fine adjustment of the push plate through a thread hole in the right slide frame or the left slide frame.

Description

Technical Field

[0001] This invention relates to a single-rail cutting machine cutting device that can eliminate the clearance between the bearing and the guide rail, automatically open the pressure block, prevent the handle from loosening and dust from entering the carriage, and a method for eliminating the clearance between the bearing and the guide rail, in the field of single-rail cutting machine component assembly manufacturing. Background Technology

[0002] CN207267295U, entitled "New Type of Single-Rail Carriage for Tile Cutting Machine," includes a left carriage shell and a right carriage shell. The left and right carriage shells are connected by screws and nuts to form the carriage frame. Three-point bearings are triangularly distributed inside both the left and right carriage shells, ensuring that the left and right carriage shells are on the same plane as the guide rail. The mating surfaces of the guide rail and the three-point bearings are flat. The triangular distribution of the three-point bearings refers to a single bearing located in the middle of the pin shaft and two bearings located at both ends of the pin shaft forming a triangle. A plastic retainer is attached to the pin shaft. A pin shaft clip is used to fix the pin shaft. The retainer has a groove on its latching surface, with the outer side of the groove wall being arc-shaped, and the opening end face of the groove wall being flat. The upper and lower parts of the carriage frame cavity are respectively equipped with front and rear bearings arranged in a straight line, and these bearings have a clearance-free fit with the upper and lower surfaces of the guide rail carriage. The straight-line distribution of the front and rear bearings refers to two bearings distributed one in front of the other on the pin shaft. The left or right carriage housing is equipped with a plastic stud cap. The stud in the plastic stud cap forms a connection with the guide rail to fix or open the carriage, serving a protective function by securing the carriage during transport. This patent has several issues: First, the left and right carriage housings each have a triangularly distributed three-point bearing, but the bearings are directly installed inside the left and right carriage housings, making it difficult to align them on the same plane. Second, double-sided plastic parts are used to eliminate assembly gaps, but in actual assembly, the double-sided plastic parts have the problem that their elastic deformation is difficult to guarantee uniformity, causing the carriage to tilt left and right. Third, the pressure block uses a single-sided ball bearing, which easily results in one side being higher than the other during fixing, making it impossible to guarantee the balance of the pressure block. Because there is no device on the carriage to open the pressure block, the pressure block cannot be opened automatically when it moves forward; fourth, the handle is locked with screws, which can easily deform the carriage assembly when the screws are tightened, and the tightening force is difficult to control. If it is locked too tightly, the carriage will not work well, and if it is locked too loosely, there will be a gap between the handle and the carriage, and the handle and the carriage will easily loosen during use; fifth, there is a certain gap between the carriage assembly and the guide rail, and dust and oil can enter the carriage. If they stick to the bearings, they will cause the carriage to jump or move unevenly when it moves. Summary of the Invention

[0003] Design objective: To overcome the shortcomings of the prior art, this paper designs a single-rail cutting machine cutting device that can eliminate the clearance between the bearing and the guide rail, automatically open the pressure block, prevent the handle from loosening and dust from entering the carriage, and a method for eliminating the clearance between the bearing and the guide rail.

[0004] To achieve the aforementioned design objectives, the present invention features the following structural design: 1. The slide assembly has two bearing assemblies on each side of the left and right slides, with each bearing assembly located at one end of the push plate. The push plate is fixed to the left and right slides. This design is one of the technical features of the present invention. The purpose of this design is that each of the left and right slides has two bearing assemblies at the top and bottom, respectively. Each bearing assembly uses a bearing and shaft connected to the push plate with a zero-clearance fit between the bearing and the shaft, totaling four bearings. These four bearings on the left and right slides move synchronously with the push plate, ensuring that the bearings are on the same plane during adjustment. This provides a good foundation for solving the technical problem in the prior art where it is difficult to ensure that the bearings of the left and right slide shells are on the same plane. 2. The slide assembly adopts unilateral adjustment, using the left slide as a reference plane. The design eliminates the gap between the slide assembly and the guide rail through plastic parts and anti-loosening screws installed inside the right slide. This is the second technical feature of the present invention. The purpose of this design is as follows: Background technology uses double-sided plastic parts to eliminate assembly gaps. However, the problem with double-sided plastic parts is that the elastic deformation of the plastic parts is difficult to guarantee uniformity, leading to left-right tilting of the slide. This invention uses single-sided plastic parts, with the left (or right) slide as the reference plane. An elastic plastic part is added inside the right (or left) slide. This elastic plastic part is interference-fitted between the slide shell and the push plate. Then, the push plate is finely adjusted using anti-loosening screws. This effectively eliminates both assembly gaps and the elasticity of the plastic parts. Specifically, the push plate connects to the bearing assembly, and the elastic plastic part installed inside the right or left slide eliminates errors generated during component assembly. Anti-loosening screws are used to tighten the push plate to eliminate the elasticity of the plastic parts, ensuring smooth, stable, and elastic movement of the slide device on the guide rail. This ensures gap-free movement between the slide and the guide rail, and guarantees parallelism between the slide and the guide rail, preventing tilting. 3. The design of automatically opening the pressure block in the cutting device using a protrusion on the left slide is the third technical feature of this invention. The purpose of this design is as follows: This invention features a protruding device at the front of the left or middle slide. Because this protruding device is triangular, when the handle is lifted, the pressure block will inevitably contact the protruding device on the left slide. The pressure block adsorbed on the handle will then be automatically opened by the protruding device, thus enabling one-handed operation of the cutting machine. 4. The design of the pressure block being adsorbed onto the handle using dual strong magnets is the fourth technical feature of this invention. The purpose of this design is that using dual magnets to adsorb the pressure block not only makes the adsorption of the pressure block more stable but also solves the problem of unevenness when the pressure block in the background technology, which uses a single-sided ball bearing, is fixed, ensuring the balance of the pressure block. 5. The design of an anti-loosening device on the handle is the fifth technical feature of this invention. The purpose of this design is that the wear-resistant plastic part is tightened by an anti-loosening screw, utilizing the elasticity of the plastic part to prevent the handle and slide device from loosening during use.The following problems with the screw-locking method in the background technology are solved: First, the carriage assembly is prone to deformation when the screw is tightened, and the tightening force is difficult to control. If it is tightened too much, the feel is poor, and if it is tightened too little, a gap will easily appear between the handle and the carriage. Second, the handle and the carriage are prone to loosening during use. 6. The carriage device adopts a fully enclosed design, which is the sixth technical feature of this invention. The purpose of this design is that since the working environment of this invention is cutting tiles, dust is inevitably generated during tile cutting. The installation of customized rectangular sealing rings at the front and rear of the carriage device can not only prevent dust from entering the carriage device, but also clean the dust and oil on the guide rail when the carriage device moves back and forth. This solves the problem of a certain gap between the carriage assembly and the guide rail in the background technology, and avoids the defect of dust and oil entering the carriage and sticking to the bearing, causing the carriage to jump or move unevenly. This invention employs a sealing ring for complete enclosure, preventing dust, oil, and other impurities from entering the carriage. The sealing ring also contacts the guide rail, automatically cleaning the guide rail surface as the carriage moves, ensuring smooth and stable movement. 7. The design of installing thrust ball bearings on both sides of the pressure block is the seventh technical feature of this invention. This design ensures seamless rotation between the pressure block and the handle, crucial for maintaining a perpendicular position between the pressure block and the tile during crushing. If this perpendicularity is compromised, uneven force on both sides of the pressure block can lead to the tile being crushed outside the cutting line. In the prior art, the pressure block and handle are connected by screws, resulting in a gap between them. This causes the pressure block to wobble from side to side, making it prone to tilting when in contact with the tile surface. However, this invention, by adding a thrust ball bearing, achieves gapless movement between the pressure block and handle, effectively eliminating the tilting phenomenon and preventing damage to the cut tile. 8. The use of a limiting device on the handle is the eighth technical feature of this invention. The purpose of this design is to ensure a safe distance (30mm) between the handle and the guide rail, preventing users from injuring their fingers during use.

[0005] Technical Solution 1: A single-rail cutting machine cutting device includes a single rail and a cutting device. The cutting device has two bearing assemblies on each side of the left and right slides. The two bearing assemblies are located at both ends of the push plate via shafts. The two push plates are fixed on the left and right slides respectively. An elastic plastic part is provided between the right or left slide and the push plate. The upper bearing assembly and the lower bearing assembly are respectively installed in the bearing seats of the left and right slides via shafts, and the bearings in the upper and lower bearing assemblies are respectively in contact with the guide rail. The anti-loosening screws are used to fine-tune the push plate through the threaded holes in the right or left slide.

[0006] Technical Solution 2: A method for eliminating the gap between the bearings and guide rails of a monorail cutting machine. The slide assembly has two bearing sets on each side of the left and right slides, with each bearing set located at one end of a push plate. The push plate is fixed to the left and right slides. Four bearings mounted on the left and right slides move synchronously with the push plate, ensuring that the bearings are on the same plane during adjustment. The slide assembly uses unilateral adjustment, with the left or right slide as the reference plane. An elastic plastic component is added inside the right or left slide. This elastic plastic component is interference-fitted between the slide housing and the push plate. Then, anti-loosening screws are used to fine-tune the push plate, eliminating the gaps generated during component assembly. During the release process, the elastic plastic component presses against both the push plate and the right or left slide, ensuring gapless movement between the slide and the guide rail, and smooth, stable, and elastic movement on the guide rail.

[0007] Compared with the prior art, this invention has the following advantages: First, the bearing surfaces on the sides of the left and right carriage housings are on the same plane; second, it uses single-sided plastic, and with the left or right carriage as the reference plane, an elastic plastic component is added inside the right or left carriage. The push plate is finely adjusted using anti-loosening screws, which effectively eliminates assembly gaps and the elasticity of the plastic component, ensuring smooth and stable movement of the carriage device on the guide rail without any elasticity; third, the pressure block in the cutting device utilizes a protrusion design on the left carriage, allowing the pressure block, which is attached to the handle, to be automatically opened by the protrusion when the cutting machine is operated with one hand; fourth, the pressure block uses a design with double strong magnets to attach to the handle, which not only makes the pressure block more stable but also ensures its balance; and fifth, an anti-loosening device is designed on the handle. The first feature addresses the shortcomings of the prior art, such as the slide assembly easily deforming when the screws are tightened, and the handle easily loosening during use. The second feature is a fully enclosed design for the slide assembly, which not only prevents dust from entering but also allows the sealing ring to clean dust and oil from the guide rails during forward and backward movement. This eliminates the gap between the slide assembly and the guide rails, preventing dust and oil from getting inside the slide and sticking to the bearings, causing the slide to jump or move unevenly. The third feature is the design of thrust ball bearings on both sides of the pressure block, ensuring seamless rotation between the pressure block and the handle, and guaranteeing that the pressure block and the tile remain perpendicular when the tile is broken, preventing the tile from being crushed after cutting. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the cutting device of a monorail cutting machine.

[0009] Figure 2 This is a schematic diagram of the left carriage structure.

[0010] Figure 3 This is a schematic diagram of the right carriage structure.

[0011] Figure 4 This is a schematic diagram of the upper and lower bearing assemblies, where 10 represents the upper and lower bearing assemblies; 10-1 represents the shaft; and 10-2 represents the bearing.

[0012] Figure 5 This is a schematic diagram of the bearing assembly and push plate after assembly.

[0013] Figure 6 This is a schematic diagram of the structure inside the right slide after the left slide is opened.

[0014] Figure 7 This is a schematic diagram showing the combination of the pressure block and the handle.

[0015] Figure 8 This is a schematic diagram showing the fit between the pressure block and the protrusion in the carriage.

[0016] Figure 9 This is a schematic diagram of a carriage consisting of a left carriage and a right carriage.

[0017] Figure 10 yes Figure 9 A schematic diagram of its decomposed structure.

[0018] Figure 11 This is a schematic diagram of the exploded structure of the left carriage.

[0019] Figure 12 This is a schematic diagram of the anti-loosening device, where 2-1 is a threaded hole.

[0020] Figure 13 This is a schematic diagram of a rectangular sealing ring.

[0021] Figure 14 yes Figure 13 Schematic diagram of the assembly structure with the carriage.

[0022] Figure 15 This is a schematic diagram of the assembly structure of the pressure block and the handle.

[0023] Figure 16 This is a schematic diagram of a limit device installed on the handle.

[0024] Figure 17 This is a schematic diagram of the handle structure.

[0025] Figure 18 This is a schematic diagram of the carriage locking and opening mechanism. Detailed Implementation

[0026] See attached document Figure 1-18 The present invention will be further described below.

[0027] See attached document Figures 1-6The carriage assembly consists of a left carriage 5 and a right carriage 1, with two bearing assemblies I 11 on each side. These bearing assemblies are connected and fixed to the left carriage 5 and right carriage 1 by push plates 6. There are two bearing assemblies II 10 on the upper and lower sides, each bearing assembly using a single bearing and shaft connection to ensure no clearance between the bearing and shaft. The push plates 6 ensure that the bearings are on the same plane during adjustment.

[0028] See attached document Figure 7 The pressure block 4 is attached to the handle 2 using dual strong magnets 17, making the pressure block 4 more stable. Existing technology uses a single-sided ball bearing, which easily leads to one side being higher than the other when the pressure block is fixed. This invention uses dual magnets to ensure the balance of the pressure block.

[0029] See attached document Figure 8 The pressure block 4 utilizes a protruding device 5-1 on the left slide 5. When the handle is lifted, the pressure block 4 contacts the protruding device 5-1 on the left slide 5, automatically opening the pressure block 4 and enabling one-handed operation of the cutting machine. In existing technology, the pressure block cannot automatically open when it is forward. This invention uses magnetic attraction and a protruding device on the left slide 5 to achieve automatic opening of the pressure block.

[0030] See attached document Figure 9 and 10 The carriage assembly employs unilateral adjustment, with the left carriage 5 serving as a reference plane. The gap between the carriage assembly and the guide rail 3 is eliminated through the plastic component 9 and the anti-loosening screw 8 inside the right carriage 1. Existing technology uses double-sided plastic components to eliminate assembly gaps. However, the problem with double-sided plastic components is that the elastic deformation of the plastic components is difficult to guarantee uniformity, leading to left-right tilting of the carriage. This invention uses a unilateral plastic component, with the left carriage 5 as the reference plane and an elastic plastic component added inside the right carriage 1. This effectively eliminates assembly gaps. Furthermore, the anti-loosening screw 8 effectively eliminates the elasticity of the plastic component. This ensures gap-free movement between the carriage and the guide rail, and guarantees that the carriage and guide rail are parallel, preventing tilting.

[0031] See attached document Figure 11 The push plate 6 connects to the bearing assembly 11. The elastic plastic part 9 installed inside the right slide 1 is used to eliminate the error caused by the assembly of the parts. The anti-loosening screw 8 is used to tighten the push plate to eliminate the elasticity of the plastic part and ensure that the slide device moves smoothly and without elasticity on the guide rail 3.

[0032] See attached document Figure 12The handle 2 is designed with an anti-loosening device, utilizing a wear-resistant plastic part 13. The anti-loosening screw 12 tightens the wear-resistant plastic part 13, and the elasticity of the plastic part prevents the handle 2 from loosening during use. Existing technology uses screw locking, which has the following problems: 1. The slide assembly is prone to deformation when the screw is tightened, and the tightening force is difficult to control. Too tight a tightening results in a poor feel, while too loose a tightening creates a gap between the handle and the slide; 2. During use, the handle and slide are prone to loosening. The current device effectively prevents this gap and provides a much better feel than before.

[0033] See attached document Figure 13 and 14 The carriage assembly adopts a fully enclosed design, with custom-made sealing rings 7 installed at the front and rear to prevent dust from entering. Simultaneously, as the carriage moves back and forth, the sealing rings 7 clean dust and oil stains from the guide rails. In existing technology, there is a certain gap between the carriage assembly and the guide rail, allowing dust and oil stains to enter the carriage. If these adhere to the bearings, they can cause the carriage to bounce or move unevenly. This invention, however, uses sealing rings to achieve a truly fully enclosed carriage, preventing dust, oil, and other impurities from entering. Furthermore, the sealing rings contact the guide rails, automatically cleaning dust, oil, and other impurities from the guide rail surface during carriage movement, ensuring smooth and stable movement of the carriage on the clean guide rail surface.

[0034] See attached document Figure 15 The pressure block 4 is equipped with thrust ball bearings 16 on both sides, allowing for seamless rotation between the pressure block 4 and the handle 2. This ensures that the pressure block 4 remains perpendicular to the tile when it is crushing it. In existing technology, the pressure block and handle are connected by screws, resulting in a gap between them. This causes the pressure block to wobble from side to side and tend to tilt when in contact with the tile surface. This invention adds thrust ball bearings, enabling gapless movement between the pressure block and the handle, effectively eliminating the tilting phenomenon when the pressure block contacts the tile surface.

[0035] See attached document Figure 16 The handle 2 is equipped with a limiting device 2-2 to maintain a safe distance (30mm) between the handle 2 and the guide rail 3, preventing the user from injuring their fingers during use. This limiting device is primarily for user safety.

[0036] See attached document Figure 17 The handle 2's tail end adopts an ergonomic design with a semi-elliptical shape, and adds rounded plastic parts on both sides (left 15 and right 14) for greater comfort during use.

[0037] See attached document Figure 18The left carriage 5 is designed with holes for installing Torx screws 19. By rotating the Torx screws 19, the carriage device can be fixed and loosened to prevent the carriage device from moving randomly during transportation.

[0038] Example 1: A single-rail cutting machine cutting device includes a single rail and a cutting device. The left slide 5 and the right slide 1 in the cutting device each have two bearing groups 11. The two bearing groups are located at both ends of the push plate 6 through the shaft 10-1. The two push plates 6 are respectively fixed on the left slide 5 and the right slide 1. An elastic plastic part 9 is provided between the right slide 1 or the left slide 5 and the push plate 6. The upper bearing group and the lower bearing group 10 are respectively installed in the left slide and the right slide shaft seat through the shaft 10-1, and the bearings in the upper bearing group and the lower bearing group are respectively in contact with the guide rail 3. The anti-loosening screw 8 is used to fine adjust the push plate 6 through the threaded hole in the right slide or the left slide.

[0039] The elastic plastic part 9 is interference-fitted between the right slide 1 or the left slide 5 and the push plate 6. A wear-resistant plastic part 13 is embedded in the threaded hole at the front end of the handle 2 in the cutting device. The damping screw 12 tightens the wear-resistant plastic part 13 through the threaded hole 2-1 at the front end of the handle, forming a damping fit between the wear-resistant plastic part 13 and the bolt 18. The hinge joint where the handle 2 in the cutting device connects to the left and right slides has a threaded hole 2-1 at its front end. Magnets 17 are respectively provided on the two sides of the pressure block 4 in the cutting device. Thrust ball bearings 16 are installed in the lug holes on both sides of the pressure block 4 in the cutting device.

[0040] Example 2: A single-rail cutting machine cutting device includes a single rail and a cutting device. A protruding device is provided at the front of the left or middle slide of the cutting device. A pressure block is adsorbed on both sides of the protrusion. The pressure block is hinged to the lower end of the handle. When the handle is lifted, causing the pressure block to move, the pressure block touches the protruding device on the left or right slide, and the pressure block adsorbed on the handle is automatically opened by the protruding device. The protruding device is triangular.

[0041] Example 3: A single-rail cutting machine cutting device includes a single rail and a cutting device, wherein rectangular sealing rings are provided at the front and rear of the sliding carriage of the cutting device.

[0042] Example 4: A method for eliminating the gap between the bearing and the guide rail of a monorail cutting machine, characterized in that: the left and right slides of the slide device each have two bearing sets, and the two bearing sets are located at both ends of the push plate. The push plate is fixed on the left and right slides. The four bearings mounted on the left and right slides move synchronously with the push plate, so that the bearings can be kept on the same plane during adjustment. At the same time, the slide device adopts unilateral adjustment, and with the left or right slide as the reference plane, an elastic plastic part is added inside the right or left slide. The elastic plastic part is interference-fitted between the slide shell and the push plate. Then, the push plate is finely adjusted using anti-loosening screws to eliminate the gap caused by the error during the assembly of parts. During the release process, the elastic plastic part of the interference fit presses against the push plate on one side and against the right or left slide on the other side, so that the slide moves without gaps between the slide and the guide rail, and moves smoothly and without elasticity on the guide rail.

[0043] It should be understood that although the above embodiments provide a relatively detailed textual description of the design concept of the present invention, these textual descriptions are merely simple textual descriptions of the design concept of the present invention, and not limitations on the design concept of the present invention. Any combination, addition, or modification that does not exceed the design concept of the present invention falls within the protection scope of the present invention.

Claims

1. A monorail cutting machine cutting device, comprising a monorail and a cutting device disposed on the monorail, the cutting device comprising a left carriage and a right carriage, characterized in that: Bearing assemblies are respectively provided on opposite sides of the left and right slides. The bearing assemblies are respectively mounted on both ends of the push plate via shafts. The push plates are respectively fixedly mounted on the left and right slides. An elastic plastic part is provided between the left or right slide and the corresponding push plate, and the left or right slide is provided with an anti-loosening screw. The anti-loosening screw acts on the push plate through the threaded hole on the slide, which is used to finely adjust the position of the push plate. The bearings in the bearing assemblies are connected to the push plates via shafts, and there is a zero-clearance fit between the bearings and the shafts. This allows the bearings on the left and right slides to move synchronously with the push plates during adjustment, thereby ensuring that the bearings are on the same plane and move in conjunction with the monorail during assembly and adjustment.

2. The single-rail cutting machine cutting device according to claim 1, characterized in that: The elastic plastic component is disposed between the left or right slide and the corresponding push plate in an interference fit manner.

3. The single-rail cutting machine cutting device according to claim 1, characterized in that: The upper and lower parts of the left and right slides are each equipped with a bearing assembly.

4. The single-rail cutting machine cutting device according to claim 1, characterized in that: The cutting device adopts a single-sided adjustment structure, and is adjusted using one side of the left or right slide as a reference plane.

5. The single-rail cutting machine cutting device according to claim 1, characterized in that: The anti-loosening screw presses against the push plate through the threaded hole on the slide.

6. The single-rail cutting machine cutting device according to claim 1, characterized in that: The front and rear ends of the slide of the cutting device are respectively provided with rectangular sealing rings.

7. A method for eliminating the gap between the bearing and the guide rail in a monorail cutting machine, characterized in that: The monorail cutting device according to any one of claims 1-6 utilizes an elastic plastic part disposed between the carriage and the push plate, and adjusts the push plate by means of anti-loosening screws, so that the bearing moves synchronously with the push plate and cooperates with the monorail.

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