Manual ceramic tile cutting machine

Abstract

The invention provides a manual ceramic tile cutting machine which comprises a guide rail, a sliding block, a scale rod and a cutting head, the sliding block is arranged on the guide rail in a sliding mode and makes rolling contact with the guide rail, the first end of the scale rod is fixedly connected with the sliding block, the cutting head is arranged on the scale rod in a sliding mode, and the second end of the scale rod is fixedly connected with the sliding block. And the cutting head is in rolling contact with the scale rod. The method has the advantages of improving the scribing precision, prolonging the service life, improving the use experience and the like.

Description

Technical Field

[0001] The present invention relates to the field of cutting machines, in particular to a manual tile cutting machine. Background Art

[0002] Existing T-shaped push knives have some problems that lead to poor marking effects on ceramic tiles or glass surfaces, resulting in segmentation failures or ultimately poor segmentation accuracy. Analysis shows that the main influencing factors are as follows: First, the slider on the aluminum profile guide rail will loosen after sliding against the aluminum guide rail multiple times. This is mainly due to the sliding of the bearings on the aluminum profile and the slider, which causes the scale rod and cutting head connected to them to shake, resulting in precision errors; secondly, on the scale rod, the cutting head and the scale rod, in order to ensure smooth sliding, usually have a large gap. This may cause offset when determining the distance and locking, resulting in distance error, thus affecting the cutting effect, and the sliding will also be uneven; finally, when marking some small-sized bricks, due to the weight and insufficient friction of the small bricks themselves, the bricks may move due to accidental contact during the marking process, resulting in marking failure.

[0003] Therefore, it is necessary to provide a new technical solution. Summary of the Invention

[0004] In order to solve the technical problems existing in the prior art, the present invention discloses a manual tile cutter, and the specific technical solution is as follows:

[0005] The present invention provides a manual tile cutting machine, comprising a guide rail, a slider, a scale rod and a cutting head.

[0006] The slider is slidably arranged on the guide rail, and the slider and the guide rail are in rolling contact.

[0007] The first end of the scale rod is fixedly connected to the slider.

[0008] The cutting head is slidably arranged on the scale rod, and the cutting head and the scale rod are in rolling contact.

[0009] Furthermore, the slider includes a first connecting portion and a second connecting portion, the first connecting portion is horizontally arranged, the second connecting portion is vertically arranged at the bottom of one side of the first connecting portion, the guide rail is arranged below the first connecting portion, and the side of the guide rail is opposite to the second connecting portion.

[0010] The slider also includes a first roller group, a second roller group and a third roller group. The first roller group and the second roller group are respectively fixedly arranged at the bottom of the first connecting part, and the third roller group is fixedly arranged at the second connecting part. The first roller group, the second roller group and the third roller group are respectively in rolling contact with the guide rail.

[0011] Furthermore, a first connecting groove is provided on the top of the guide rail, and the first roller group and the second roller group both extend downward into the first connecting groove and respectively roll in contact with the protruding structures on both sides of the first connecting groove.

[0012] The top side of the guide rail extends toward the second connecting portion to above the third roller group, and the third roller group is in rolling contact with the raised structure on the guide rail above.

[0013] The protruding structure is a cylindrical steel rod movably embedded in the guide rail.

[0014] Furthermore, a first square groove opening upward is provided at the lower portion of the first connecting portion, and a second square groove opening outward is provided at the outer side of the second connecting portion.

[0015] The first roller assembly includes a first roller, a first bushing, a first connecting screw, a first connecting nut and a first set screw. The first connecting nut is arranged in the first square groove. The first connecting screw passes through the first roller, the first bushing, the first connecting portion and the first connecting nut in sequence from bottom to top to be connected and fixed. The first set screw is threadedly connected from the side of the first connecting portion and passes through the first connecting portion to movably contact the first connecting nut. The first set screw controls the horizontal tightness of the first roller assembly and the guide rail.

[0016] The second roller assembly includes a second roller, a second bushing and a second connecting screw, and the second connecting screw passes through the second roller, the second bushing and the first connecting portion from bottom to top in sequence and is threadedly fixed.

[0017] The third roller assembly includes a third roller, a third bushing, a third connecting screw, a third connecting nut and a second set screw. The third connecting nut is arranged in the second square groove. The third connecting screw passes through the third roller, the third bushing, the second connecting portion and the third connecting nut in sequence to be connected and fixed. The second set screw is threadedly connected from the bottom edge of the second connecting portion and passes through the second connecting portion to movably contact the third connecting nut. The second set screw controls the tightness of the third roller assembly and the guide rail in the vertical direction.

[0018] The first roller, the second roller and the third roller are capable of movably rotating and contacting the convex structure, and the side edges of the first roller, the second roller and the third roller are concave structures matching the convex structure.

[0019] Furthermore, a second connecting groove opening upward is provided on the top of the guide rail away from the second connecting portion, a horizontal baffle extending horizontally inward is provided on the inner top of the second connecting groove, and a vertical baffle extending vertically downward is provided on the outer bottom of the second connecting groove.

[0020] Two brick blocking members are slidably arranged in the second connecting groove, and the brick blocking members include a first knob and a first baffle. The first baffle includes a horizontal connecting plate and a vertical connecting plate. The horizontal connecting plate is horizontally arranged on the horizontal baffle of the second connecting groove, and the vertical connecting plate is vertically fixed to the bottom of the outer end of the horizontal connecting plate. The bottom of the vertical connecting plate is provided with a horizontal support plate extending horizontally inward to below the vertical baffle.

[0021] The first knob is threadedly connected through the horizontal connecting plate and contacts the second connecting groove. The first knob and the horizontal support plate fix the brick blocking member in the connecting groove.

[0022] Furthermore, the corners on both sides of the bottom of the second connecting groove are set as sloped surfaces, and the bottom of the horizontal connecting plate is provided with a vertical support plate extending vertically downward into the second connecting groove, the bottom of the vertical support plate contacts the second connecting groove, and the outer side of the bottom of the vertical support plate extends to contact and match the sloped surface in the second connecting groove.

[0023] The horizontal support plate is provided with an upwardly extending protruding stopper on the inner side of the vertical stopper, and the protruding stopper limits the horizontal movement distance of the brick blocking member.

[0024] Furthermore, the cross-section of the scale rod is a diamond shape, the cutting head is sleeved on the scale rod, and the cutting head is provided with an opening on both sides of the scale rod and a first groove and a second groove communicating with the scale rod, respectively.

[0025] A fourth roller assembly is provided in the first groove, the fourth roller assembly including a fourth roller and a fourth connecting screw, the fourth connecting screw passes through the cutting head from below the first groove and is pivotally connected to the fourth roller, the fourth roller can movably rotate and roll in contact with the scale rod,

[0026] A fifth roller group is provided in the second groove, and the fifth roller group includes a fifth roller, a fifth connecting screw and a third set screw. The fifth connecting screw passes through the cutting head from the bottom of the second groove and is pivotally connected to the fifth roller. The fifth roller can rotate movably and make rolling contact with the scale rod. The third set screw is threadedly connected from the side of the second groove and passes through the cutting head and makes contact with the fifth connecting screw. The third set screw controls the tightness of the cutting head and the scale rod.

[0027] Furthermore, the cutting head includes a second knob, which is threadedly connected to the cutting head above the first groove and contacts the scale rod. The second knob and the third set screw generate relative pressure to adjust the tightness of the cutting head on the scale rod.

[0028] Furthermore, the cutting head also includes a knife bar assembly, which includes a third knob and a knife bar. The knife bar is movably arranged in the second groove, and the third knob is threadedly connected from the side of the second groove to pass through the cutting head and contact the knife bar.

[0029] The present invention has the following beneficial effects:

[0030] The manual tile cutter provided by this invention features three stainless steel rods movably embedded within the guide rail. The rolling friction between the rods and the stainless steel rollers improves smooth sliding and reduces maintenance. Set screws on the side of the slider adjust the gap between the rollers and the slider, facilitating securement. The two upper rollers, plus a set of side rollers, enhance the reliability and stability of the connection between the slider and the guide rail.

[0031] 2. The manual tile cutter provided by this invention features four plastic rollers installed inside the cutting head, replacing the traditional sliding friction between the cutting head and the scale bar with rolling friction, improving the feel. A set screw is also located on one side of the cutting head to facilitate adjustment of the gap between the plastic rollers and the scale bar. During use, the screws can be tightened directly after measuring the distance, effectively solving the problem of offsetting the locking index when there is a gap.

[0032] 3. The manual tile cutter provided by the present invention is provided with tile stoppers at both ends of the small tiles for fixing. After the tile stoppers are locked, the small tiles can be prevented from moving during the tile cutting process.

[0033] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the manual tile cutter provided in an embodiment of the present invention.

[0036] Figure 2 It is a schematic diagram of the three-dimensional structure of a slider provided by an embodiment of the present invention.

[0037] Figure 3 It is a schematic diagram of the three-dimensional structure of the first roller group, the second roller group and the third roller group provided in an embodiment of the present invention.

[0038] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide rail and the brick blocking member provided in an embodiment of the present invention.

[0039] Figure 5 It is a schematic diagram of the cross-sectional structure of the guide rail and the brick retaining member provided in an embodiment of the present invention.

[0040] Figure 6 It is a schematic diagram of the three-dimensional structure of the scale rod and the cutting head provided in an embodiment of the present invention.

[0041] Figure 7 It is a schematic diagram of the three-dimensional structure of the cutting head provided by an embodiment of the present invention.

[0042] Figure 8 It is a schematic diagram of the three-dimensional structure of the fourth roller group, the fifth roller group and the knife rod assembly provided in an embodiment of the present invention.

[0043] The accompanying drawings are denoted as follows:

[0044] Guide rail 1, first connecting groove 11, protruding structure A, second connecting groove 12, second connecting groove 12, horizontal baffle 121, vertical baffle 122;

[0045] Slider 2, first connecting portion 21, second connecting portion 22, first roller group 23, second roller group 24, third roller group 25, first square groove 211, second square groove 221, first roller 231, first bushing 232, first connecting screw 233, first connecting nut 234, first set screw 235, second roller 241, second bushing 242, second connecting screw 243, third roller 251, third bushing 252, third connecting screw 253, third connecting nut 254, second set screw 255;

[0046] Ruler rod 3;

[0047] Cutting head 4, fourth roller assembly 41, fourth roller 411, fourth connecting screw 412, fifth roller assembly 42, fifth roller 421, fifth connecting screw 422, third set screw 423, second knob 43, knife bar assembly 44, third knob 441, knife bar 442;

[0048] Brick blocking member 5, first knob 51, horizontal connecting plate 52 and vertical connecting plate 53, horizontal supporting plate 531, vertical supporting plate 521, protruding stopper 532. DETAILED DESCRIPTION

[0049] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0050] In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

[0051] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] The manual tile cutting machine of the present invention is Figures 1 to 8 The invention comprises a guide rail 1, a slider 2, a scale rod 3 and a cutting head 4. The slider 2 is slidably arranged on the guide rail 1, and the slider 2 and the guide rail 1 are in rolling contact. The first end of the scale rod 3 is fixedly connected to the slider 2. The cutting head 4 is slidably arranged on the scale rod 3, and the cutting head 4 and the scale rod 3 are in rolling contact.

[0053] In one embodiment, reference Figure 2 The slider 2 includes a first connecting portion 21 and a second connecting portion 22. The first connecting portion 21 is arranged horizontally, and the second connecting portion 22 is arranged vertically at the bottom of one side of the first connecting portion 21. The guide rail 1 is arranged below the first connecting portion 21, and the side of the guide rail 1 faces the second connecting portion 22. The first connecting portion 21 and the second connecting portion 22 are roughly at right angles. The guide rail 1 is placed on the inner side of the first connecting portion 21 and the second connecting portion 22, with the top surface of the guide rail 1 facing the first connecting portion 21 and the side surface of the guide rail 1 facing the second connecting portion 22.

[0054] For further reference, Figure 2 The slider 2 also includes a first roller group 23, a second roller group 24 and a third roller group 25. The first roller group 23 and the second roller group 24 are respectively fixedly arranged at the bottom of the first connecting portion 21, and the third roller group 25 is fixedly arranged at the second connecting portion 22. The first roller group 23, the second roller group 24 and the third roller group 25 are respectively in rolling contact with the guide rail 1.

[0055] refer to Figure 4 and Figure 5 The guide rail 1 has a first connecting groove 11 at its top. The first roller assembly 23 and the second roller assembly 24 extend downward into the first connecting groove 11 and respectively engage in rolling contact with the raised structures A on either side of the first connecting groove 11. The slider 2 uses the first and second roller assemblies 23 and 24 as support points to withstand the weight of the slider 2.

[0056] The top side edge of the guide rail 1 extends toward the second connecting portion 22 to above the third roller set 25 , and the third roller set 25 is in rolling contact with the raised structure A on the guide rail 1 above.

[0057] In one embodiment, the raised structure A is a cylindrical steel rod movably embedded within the guide rail 1. The contact area between the roller assembly and the raised structure A is also made of the same stainless steel material. This not only increases the strength of the contact area but also reduces wear, preventing excessive gaps and ensuring the connection accuracy between the slider 2 and the guide rail 1. Guide rails are generally made of aluminum, and the steel rod is much harder than aluminum, effectively reducing wear at the contact area.

[0058] In one embodiment, reference Figure 2 and Figure 3 A first square groove 211 opening upward is provided at the lower portion of the first connecting portion 21 , and a second square groove 221 opening outward is provided at the outer side of the second connecting portion 22 .

[0059] The first roller group 23 includes a first roller 231, a first bushing 232, a first connecting screw 233, a first connecting nut 234 and a first fastening screw 235. The first connecting nut 234 is arranged in the first square groove 211. The first connecting screw 233 passes through the first roller 231, the first bushing 232, the first connecting part 21 and the first connecting nut 234 from bottom to top to be connected and fixed. The first fastening screw 235 is threadedly connected from the side of the first connecting part 21 and passes through the first connecting part 21 to movably contact the first connecting nut 234. The first fastening screw 235 controls the tightness of the first roller group 23 and the guide rail 1 in the horizontal direction.

[0060] The second roller group 24 includes a second roller 241, a second bushing 242 and a second connecting screw 243. The second connecting screw 243 passes through the second roller 241, the second bushing 242 and the first connecting portion 21 from bottom to top and is threaded and fixed. The second roller group 24 is directly fixed to the first connecting portion 21, and the first roller group 23 is capable of adjusting the tightness of the guide rail 1 and the first roller group 23, thereby ensuring the connection accuracy between the guide rail 1 and the slider 2. The first roller group 23 and the second roller group 24 roll and rub against the guide rail 1 and bear the entire weight of the slider 2. The first roller 231 and the second roller 241 are at the same height, and the raised structure A they contact is also symmetrically arranged on the left and right. It can be understood that the raised structure A in the first connecting groove can also be at different heights.

[0061] The third roller group 25 includes a third roller 251, a third bushing 252, a third connecting screw 253, a third connecting nut 254 and a second fixing screw 255. The third connecting nut 254 is arranged in the second square groove 221. The third connecting screw 253 passes through the third roller, the third bushing 252, the second connecting part 22 and the third connecting nut 254 in sequence to be connected and fixed. The second fixing screw 255 is threadedly connected from the bottom edge of the second connecting part 22 and passes through the second connecting part 22 to movably contact the third connecting nut 254. The second fixing screw 255 controls the tightness of the third roller group 25 and the guide rail 1 in the vertical direction.

[0062] Specifically, the first roller 231, the second roller 241, and the third roller 251 are movable and rotatable so as to contact the raised structure A. The sides of the first roller 231, the second roller 241, and the third roller 251 are concave structures that match the raised structure A. The first roller 231, the second roller 241, and the third roller 251 are made of the same stainless steel as the steel rod in the raised structure A.

[0063] In one embodiment, reference Figure 4 and Figure 5 A second connecting groove 12 opening upward is provided on the side of the top of the guide rail 1 away from the second connecting portion 22, a horizontal baffle 121 extending horizontally inward is provided on the inner top of the second connecting groove 12, and a vertical baffle 122 extending vertically downward is provided on the outer bottom of the second connecting groove 12.

[0064] Two tile retaining members 5 are slidably mounted within the second connecting groove 12. These members are positioned at either end of a tile to secure it. The tile retaining member 55 comprises a first knob 51 and a first retaining plate. The first retaining plate comprises a horizontal connecting plate 52 and a vertical connecting plate 53. The horizontal connecting plate 52 is horizontally mounted on the horizontal retaining plate 121 of the second connecting groove 12. The vertical connecting plate 53 is vertically secured to the bottom of the outer end of the horizontal connecting plate 52. A horizontal support plate 531 is positioned at the bottom of the vertical connecting plate 53, extending horizontally inward to below the vertical retaining plate 122. The horizontal retaining plate 121 supports the horizontal connecting plate 52 and closes the second connecting groove 12, preventing the first retaining plate within the second connecting groove 12 from slipping out. The horizontal connecting plate 52 and the horizontal support plate 531 define the vertical distance between the tile retaining member 5 and prevent it from slipping out of the guide rail 1 without obstruction.

[0065] The first knob 51 is threadedly connected through the horizontal connecting plate 52 and contacts the second connecting groove 12. The first knob 51 and the horizontal support plate 531 fix the brick blocking member 5 in the connecting groove. The first knob 51 cooperates with the horizontal support plate 531 to fix the brick blocking member 5 on the guide rail 1.

[0066] The bottom corners of the second connecting groove 12 are provided with sloped surfaces. The bottom of the horizontal connecting plate 52 is provided with a vertical support plate 521 extending vertically downward into the second connecting groove 12. The bottom of the vertical support plate 521 contacts the second connecting groove 12. The outer edge of the bottom of the vertical support plate 521 extends to contact and match the sloped surface in the second connecting groove 12. The vertical support plate 521 and the first knob 51 limit the lateral movement distance of the brick retaining member 5 in the second connecting groove 12. The vertical support plate 521 can fit tightly against the sloped surface without mutual wear.

[0067] The horizontal support plate 531 is provided with an upwardly extending protruding stopper 532 on the inner side of the vertical stopper 122. The protruding stopper 532 limits the horizontal movement distance of the brick blocking member 5. The vertical support plate 521 limits the movement distance of the brick blocking member 5 in a first horizontal direction, and the protruding stopper 532 limits the movement distance of the brick blocking member 5 in a second horizontal direction.

[0068] In one embodiment, reference Figure 6 and Figure 7 The cross-sectional shape of the scale rod 3 is a diamond shape, and the cutting head 4 is sleeved on the scale rod 3. The cutting head 4 is respectively provided with a first groove and a second groove on both sides of the scale rod 3 that are connected to the opening of the scale rod 3.

[0069] refer to Figures 6 to 8A fourth roller group 41 is provided in the first groove, and the fourth roller group 41 includes a fourth roller 411 and a fourth connecting screw 412. The fourth connecting screw 412 passes through the cutting head 4 from the bottom of the first groove and is pivotally connected to the fourth roller 411. The fourth roller 411 can rotate movably and roll in contact with the scale rod 3.

[0070] A fifth roller assembly 42 is disposed within the second groove. The fifth roller assembly 42 comprises a fifth roller 421, a fifth connecting screw 422, and a third set screw 423. The fifth connecting screw 422 extends from the bottom of the second groove, passes through the cutting head 4, and is pivotally connected to the fifth roller 421. The fifth roller 421 is capable of rotation and rolling contact with the scale rod 3. The third set screw 423, threaded from the side of the second groove, passes through the cutting head 4 and contacts the fifth connecting screw 422. The third set screw 423 controls the tension between the cutting head 4 and the scale rod 3. The fourth roller assembly 41 is directly fixedly connected to the cutting head 4, while the third set screw 423 adjusts the tension between the fifth roller assembly 42 and the scale rod 3, thereby adjusting the horizontal tension between the cutting head 4 and the scale rod 3. The fifth connecting screw 422 is threadless at the point where it is released from the third set screw 423 to prevent the third set screw 423 from wearing away the threads of the fifth connecting screw 422, causing precision errors. fourth

[0071] Each roller group includes at least two rollers, thereby controlling the movement direction of the guide rail or ruler rod in contact with each other.

[0072] In one embodiment, reference Figures 6 to 8 The cutting head 4 includes a second knob 43. The second knob 43 is threadedly connected to the cutting head 4 above the first groove and contacts the scale rod 3. The second knob 43 and the third set screw 423 generate relative pressure to adjust the tightness of the cutting head 4 on the scale rod 3. The second knob 43 adjusts the tightness of the cutting head 4 and the scale rod 3 in the vertical direction.

[0073] In one embodiment, the cutting head 4 further includes a cutter bar assembly 44, comprising a third knob 441 and a cutter bar 442. The cutter bar 442 is movably disposed within the second groove. The third knob 441 is threaded from the side of the second groove, passing through the cutting head 4 and contacting the cutter bar 442. The third knob 441 adjusts the tightness of the cutter bar assembly 44. The cutter bar assembly 44 and the second knob 43 are respectively disposed on either side of the scale rod 3 to ensure the balance of the cutting head 4.

[0074] The working principle of the present invention is as follows: the first and second roller groups 24 adjust the horizontal tension of the slider 2 and guide rail 1, the third roller group 25 adjusts the vertical tension of the slider 2 and guide rail 1, the fourth and fifth roller groups 42 adjust the horizontal tension of the cutting head 4 and the scale rod 3, and the second knob 43 adjusts the vertical tension of the cutting head 4 and the scale rod 3, thereby ensuring the accuracy of the slider 2 and guide rail 1, the cutting head 4 and the scale rod 3. At the same time, the rollers and the raised structure A of the first, second, and third roller groups 25 adopt a concave-convex connection method to increase the marking accuracy. The rolling contact between the rollers and the raised structure A also reduces the gap caused by sliding wear, thereby improving the final marking accuracy. In addition, the rollers and the raised structure A are both made of stainless steel, which increases the inherent strength of the structure and reduces its wear. The combination of the last two brick retaining members 5 can limit smaller tiles, increase the stability of the tiles, and ensure the marking accuracy of small tiles.

[0075] In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0076] Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention, and that those skilled in the art may make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A manual tile cutting machine, characterized in that: Including guide rails, sliders, scale rods and cutting heads, The slider is slidably arranged on the guide rail, and the slider and the guide rail are in rolling contact. The first end of the scale rod is fixedly connected to the slider. The cutting head is slidably arranged on the scale rod, and the cutting head and the scale rod are in rolling contact.

2. The manual tile cutting machine according to claim 1, characterized in that: The slider includes a first connecting portion and a second connecting portion, wherein the first connecting portion is horizontally arranged, and the second connecting portion is vertically arranged at the bottom of one side of the first connecting portion, and the guide rail is arranged below the first connecting portion, and the side of the guide rail faces the second connecting portion. The slider also includes a first roller group, a second roller group and a third roller group. The first roller group and the second roller group are respectively fixedly arranged at the bottom of the first connecting part, and the third roller group is fixedly arranged at the second connecting part. The first roller group, the second roller group and the third roller group are respectively in rolling contact with the guide rail.

3. The manual tile cutting machine according to claim 2, characterized in that: A first connecting groove is provided on the top of the guide rail, and the first roller group and the second roller group both extend downward into the first connecting groove and respectively roll in contact with the protruding structures on both sides of the first connecting groove. The top side of the guide rail extends toward the second connecting portion to above the third roller group, and the third roller group is in rolling contact with the raised structure on the guide rail above. The protruding structure is a cylindrical steel rod movably embedded in the guide rail.

4. The manual tile cutting machine according to claim 3, characterized in that: The lower portion of the first connecting portion is provided with a first square groove opening upward, and the outer side of the second connecting portion is provided with a second square groove opening outward. The first roller assembly includes a first roller, a first bushing, a first connecting screw, a first connecting nut and a first set screw. The first connecting nut is arranged in the first square groove. The first connecting screw passes through the first roller, the first bushing, the first connecting portion and the first connecting nut in sequence from bottom to top to be connected and fixed. The first set screw is threadedly connected from the side of the first connecting portion and passes through the first connecting portion to movably contact the first connecting nut. The first set screw controls the horizontal tightness of the first roller assembly and the guide rail. The second roller assembly includes a second roller, a second bushing and a second connecting screw, and the second connecting screw passes through the second roller, the second bushing and the first connecting portion from bottom to top in sequence and is threadedly fixed. The third roller assembly includes a third roller, a third bushing, a third connecting screw, a third connecting nut and a second set screw. The third connecting nut is arranged in the second square groove. The third connecting screw passes through the third roller, the third bushing, the second connecting portion and the third connecting nut in sequence to be connected and fixed. The second set screw is threadedly connected from the bottom edge of the second connecting portion and passes through the second connecting portion to movably contact the third connecting nut. The second set screw controls the tightness of the third roller assembly and the guide rail in the vertical direction. The first roller, the second roller and the third roller are capable of movably rotating and contacting the convex structure, and the side edges of the first roller, the second roller and the third roller are concave structures matching the convex structure.

5. The manual tile cutting machine according to claim 3, characterized in that: A second connecting groove opening upward is provided on the top of the guide rail extending outward from one side of the second connecting portion, a horizontal baffle extending horizontally inward is provided on the inner top of the second connecting groove, and a vertical baffle extending vertically downward is provided on the outer bottom of the second connecting groove. Two brick blocking members are slidably arranged in the second connecting groove, and the brick blocking members include a first knob and a first baffle. The first baffle includes a horizontal connecting plate and a vertical connecting plate. The horizontal connecting plate is horizontally arranged on the horizontal baffle of the second connecting groove, and the vertical connecting plate is vertically fixed to the bottom of the outer end of the horizontal connecting plate. The bottom of the vertical connecting plate is provided with a horizontal support plate extending horizontally inward to below the vertical baffle. The first knob is threadedly connected and passes through the horizontal connecting plate and contacts the second connecting groove. The first knob and the horizontal supporting plate fix the brick blocking member in the connecting groove.

6. The manual tile cutting machine according to claim 5, characterized in that: The corners on both sides of the bottom of the second connecting groove are set as sloped surfaces, and the bottom of the horizontal connecting plate is provided with a vertical support plate extending vertically downward into the second connecting groove. The bottom of the vertical support plate contacts the second connecting groove, and the outer side of the bottom of the vertical support plate extends to contact and match the sloped surface in the second connecting groove. The horizontal support plate is provided with an upwardly extending protruding stopper on the inner side of the vertical stopper, and the protruding stopper limits the horizontal movement distance of the brick blocking member.

7. The manual tile cutting machine according to claim 1, characterized in that: The cross-section of the scale rod is a diamond shape. The cutting head is sleeved on the scale rod. The cutting head is provided with a first groove and a second groove on both sides of the scale rod, respectively, which are connected to the scale rod. A fourth roller assembly is provided in the first groove, the fourth roller assembly including a fourth roller and a fourth connecting screw, the fourth connecting screw passes through the cutting head from below the first groove and is pivotally connected to the fourth roller, the fourth roller can movably rotate and roll in contact with the scale rod, A fifth roller group is provided in the second groove, and the fifth roller group includes a fifth roller, a fifth connecting screw and a third set screw. The fifth connecting screw passes through the cutting head from the bottom of the second groove and is pivotally connected to the fifth roller. The fifth roller can rotate movably and make rolling contact with the scale rod. The third set screw is threadedly connected from the side of the second groove and passes through the cutting head and makes contact with the fifth connecting screw. The third set screw controls the tightness of the cutting head and the scale rod.

8. The manual tile cutting machine according to claim 7, characterized in that: The cutting head includes a second knob, which is threadedly connected to the cutting head passing through the first groove and in contact with the scale rod. The second knob and the third set screw generate relative pressure to adjust the tightness of the cutting head on the scale rod.

9. The manual tile cutting machine according to claim 7, characterized in that: The cutting head also includes a knife bar assembly, which includes a third knob and a knife bar. The knife bar is movably arranged in the second groove, and the third knob is threadedly connected from the side of the second groove to pass through the cutting head and contact the knife bar.

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