Slotting machine

Abstract

This utility model discloses a grooving machine, including a housing and a cover assembly. The housing includes a main housing for housing a motor and a head housing for mounting a working head. The motor drives and connects to the working head. An auxiliary handle is provided on the outer wall of the head housing. The output axis of the motor, the central axis of the working head, and the extension axis of the auxiliary handle intersect each other in pairs. The cover assembly includes a protective cover disposed on the head housing. The protective cover has a cavity with an opening on one side, and the working head is inserted into the cavity through the opening. The protective cover is folded outward at the periphery of its opening, and at least two guide plates are formed on both sides of the working head along its axial direction. The guide plate near the head housing includes a first plate segment and a second plate segment whose edges meet at right angles or obtuse angles. The first plate segment is located on the side of the motor's output axis away from the auxiliary handle, and its extension axis is set at an acute angle to the motor's output axis.

Description

Technical Field

[0001] This utility model relates to the field of grooving machine technology, and in particular to a grooving machine. Background Technology

[0002] A grooving machine is a power tool specifically designed to cut grooves of specific widths and depths in various materials (such as walls, floors, stone, metal, and wood). It is widely used in construction, decoration, pipe laying, and wiring installation (e.g., grooving walls for electrical wiring, grooving floors for water pipes, and grooving stone for splicing). Existing grooving machines typically have protective covers, primarily for operator safety, dust reduction, and equipment maintenance. However, the presence of these covers can affect the grooving depth, thus limiting the machine's application scenarios. Utility Model Content

[0003] The main purpose of this utility model is to propose a grooving machine that aims to solve the problem that the grooving depth of existing grooving machines is limited due to their protective cover structure, thus affecting the application scenarios of the grooving machine.

[0004] To achieve the above objectives, this utility model proposes a grooving machine, comprising:

[0005] The housing includes a main housing for housing a motor and a head housing for mounting a working head. The motor is driven and connected to the working head. An auxiliary handle is provided on the outer wall of the head housing. The output axis of the motor, the central axis of the working head, and the extension axis of the auxiliary handle are arranged to intersect each other in pairs.

[0006] The machine housing assembly includes a cover disposed on the head shell, the cover having a cavity with an opening on one side, the working head portion being inserted into the cavity through the opening, the cover being folded outward at the periphery of its opening, and forming at least two guide plates on both sides of the working head along its axial direction.

[0007] The guide plate near the head shell includes a first plate segment and a second plate segment with their edges connected at right angles or obtuse angles. The first plate segment is located on the side of the motor's output axis away from the auxiliary handle, and its extension axis is set at an acute angle to the motor's output axis.

[0008] Preferably, the first included angle between the extension axis of the first plate segment and the output axis of the motor is set to 10° to 25°; and / or,

[0009] The second included angle between the first plate segment and the second plate segment is set to 90° to 110°.

[0010] Preferably, the protective cover includes two end plates and a surrounding plate connecting the two end plates. The surrounding plate is arranged around the working head. The two end plates are respectively disposed on both sides of the working head in its axial direction, including a first end plate close to the head shell and a second end plate away from the head shell.

[0011] The first end plate has a larger coverage area on the working head than the second end plate. The orthographic projection of the first end plate on the working head covers the central axis of the working head. The orthographic projection of the second end plate on the working head is offset from the central axis of the working head.

[0012] The end plate is folded outward from the side away from the surrounding plate to form the guide plate.

[0013] Preferably, the head shell has a mounting protrusion on one side surface facing the working head;

[0014] The first end plate has a mounting hole at a position corresponding to the central axis of the working head, and the first end plate is folded outward at a position corresponding to the periphery of the mounting hole to form an annular protrusion, which is fitted onto the outer periphery of the mounting protrusion.

[0015] The grooving machine also includes a clamp, which is sleeved on the outer periphery of the annular protrusion and used to lock and fix the annular protrusion and the mounting protrusion.

[0016] An clearance hole is provided on the guide plate near the head shell to expose the locking element on the clamp.

[0017] Preferably, the working head has a first side facing the head shell and a second side away from the head shell in its axial direction;

[0018] The two guide plates include a first guide plate located on the first side and a second guide plate located on the second side, wherein the width of the second guide plate is smaller than the width of the first guide plate in the axial direction of the working head.

[0019] Preferably, a portion of the head shell is arranged to extend outwards;

[0020] The first guide plate surrounds the periphery of the head shell, and in the axial direction of the working head, the width of the first guide plate is less than the height of the head shell. The first guide plate is provided with a clearance portion to avoid the outward expansion portion of the head shell.

[0021] Preferably, the machine cover assembly further includes a baffle, the baffle being located on the periphery of the working head and pivotally connected to the protective cover, the pivot axis of the baffle being parallel to the central axis of the working head;

[0022] The shroud assembly also includes a tension spring, the two ends of which are respectively connected to the baffle and the shroud.

[0023] Preferably, the baffle includes a bottom plate and two side plates. The bottom plate is located on the periphery of the working head, and the two side plates are disposed on the side of the bottom plate facing the working head and are respectively disposed on both sides of the working head in its axial direction.

[0024] The guide plate near the head shell has a clearance groove to avoid the side plate when the baffle rotates about its pivot axis.

[0025] Preferably, the grooving machine further includes rollers, which are rotatably mounted on the baffle and located on the side away from the protective cover, so as to roll into contact with the surface to be processed when the working head is working, and the rotation axis of the rollers is parallel to the central axis of the working head.

[0026] Preferably, along the circumferential direction of the working head, the baffle has a first side near the protective cover and a second side away from the protective cover;

[0027] The grooving machine also includes a flexible baffle plate, which is disposed on the baffle plate and located near the second side.

[0028] The technical solution provided by this utility model has at least the following advantages:

[0029] The grooving machine provided by this utility model includes a housing and a cover assembly. The housing includes a main housing and a head housing. The main housing houses the motor, and the head housing is used to mount the working head. To facilitate user operation during the work process, an auxiliary handle is provided on the outer wall of the head housing. The output axis of the motor, the central axis of the working head, and the extension axis of the auxiliary handle intersect each other in pairs. To protect operator safety, reduce dust pollution, and maintain normal equipment operation, a protective cover is provided on the head housing. The protective cover has a cavity with an opening on one side for inserting the working head. The protective cover is folded outwards at the periphery of its opening, and at least two guide plates are formed on both sides of the working head along its axial direction. During the grooving operation, the guide plates can conform to the working surface and guide the grooving path, while enhancing the protection and structural stability of the protective cover. It is understood that because the guide plates conform to the working surface, the distance between the guide plates and the outer edge of the working head can affect the grooving depth. Furthermore, the guide plate on one side of the head shell has a first plate segment and a second plate segment. The first plate segment is positioned opposite the auxiliary handle. Therefore, when the user holds the auxiliary handle, the grooving depth of the grooving machine is limited by the position of the first plate segment. Setting the extension axis of the first plate segment at an acute angle to the output axis of the motor increases the distance between the edge of the first plate segment and the outer edge of the working head, thereby increasing the grooving depth and further diversifying the application scenarios of the grooving machine. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 A schematic diagram of an embodiment of a grooving machine provided by this utility model;

[0032] Figure 2 for Figure 1 Top view of the grooving machine;

[0033] Figure 3 for Figure 1 The grooving machine is shown in the structural diagram of the protective cover (first-person view).

[0034] Figure 4 for Figure 3 The grooving machine is shown in a cross-sectional view along AA.

[0035] Figure 5 for Figure 3 A schematic diagram of the grooving machine with respect to the protective cover;

[0036] Figure 6 for Figure 1 The grooving machine is shown in the structural diagram of the protective cover (second view).

[0037] Figure 7 for Figure 1 Side view of the grooving machine;

[0038] Figure 8 for Figure 1 Another structural schematic diagram of the grooving machine;

[0039] Figure 9 for Figure 1 Another structural diagram of the grooving machine.

[0040] Explanation of icon numbers:

[0041] 100 Slotting machine; 1 Housing; 11 Main housing; 12 Head housing; 13 Mounting protrusion; 2 Cover assembly; 21 Protective cover; 211 Cavity; 212 Opening; 213 End plate; 213a First end plate; 213b Second end plate; 214 Surrounding plate; 215 First mounting hole; 216 Annular protrusion; 22 Guide plate; 22a First guide plate; 22b Second guide plate; 22c Third guide plate; 221 First plate segment; 222 Second plate segment; 223 Clearance hole; 224 Clearance part; 225 Clearance groove; 226 Insertion hole; 23 Baffle; 231 Base plate; 2311 First side; 2312 Second side; 232 Side plate; 233 Second mounting hole; 234 Third mounting hole; 24 Tension spring; 3 Working head; 31 First side; 32 Second side; 4 Auxiliary handle; 5 Clamp; 6 Main handle; 7 Locking component.

[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0045] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0046] A grooving machine is a power tool specifically designed to cut grooves of specific widths and depths in various materials (such as walls, floors, stone, metal, and wood). It is widely used in construction, decoration, pipe laying, and wiring installation (e.g., grooving walls to bury electrical wires, grooving floors to run water pipes, and grooving stone for splicing).

[0047] In order to increase the grooving depth of the grooving machine 100 and expand its application range, this utility model improves the machine cover assembly of the grooving machine 100. The specific structure of the grooving machine 100 is described below with reference to the accompanying drawings.

[0048] Please see Figure 1 and Figure 2 The grooving machine 100 includes a housing 1 and a cover assembly 2. The housing 1 includes a main housing 11 for housing a motor (not shown) and a head housing 12 for mounting a working head 3. The motor drives the working head 3. An auxiliary handle 4 is provided on the outer wall of the head housing 12. The output axis of the motor, the central axis of the working head 3, and the extension axis of the auxiliary handle 4 are arranged in pairs, intersecting each other. Specifically, the output axis of the motor, the central axis of the working head 3, and the extension axis of the auxiliary handle 4 are arranged in pairs, perpendicular to each other. It should be noted that the central axis of the working head 3 refers to the rotation axis on which the working head 3 is driven to rotate. The axial direction of the working head 3 is referenced to its rotation axis. In this embodiment, the output axis of the motor is arranged along the axial direction of the housing 1. The central axis of the working head 3 and the extension axis of the auxiliary handle 4 are arranged radially along the housing 1, and the central axis of the working head 3 and the extension axis of the auxiliary handle 4 are perpendicular to each other.

[0049] In one embodiment, please refer to Figure 1 The grooving machine 100 also includes a main handle 6, which is spaced apart from the auxiliary handle 4, and the extension axis of the main handle 6 and the extension axis of the auxiliary handle 4 are coplanar. During operation, the user can operate the grooving machine 100 by holding the main handle 6 with one hand, the auxiliary handle 4 with one hand, or by holding both the main handle 6 and the auxiliary handle 4 simultaneously.

[0050] This invention does not impose specific limitations on the type of the working head 3. The working head 3 can be configured as a grinding disc, a saw blade, or other types.

[0051] Please see Figures 3 to 5The housing assembly 2 includes a cover 21 disposed on the head shell 12. The cover 21 has a cavity 211 with an opening 212 on one side, and the working head 3 is partially inserted into the cavity 211 through the opening 212. The cover 21 is folded outward at the periphery of its opening 212, and at least two guide plates are formed on both sides of the working head 3 along its axial direction. The guide plate near the head shell 12 includes a first plate segment 221 and a second plate segment 222 with their edges joined at right angles or obtuse angles. The first plate segment 221 is located on the side of the motor's output axis away from the auxiliary handle 4, and its extension axis is set at an acute angle to the motor's output axis.

[0052] The grooving machine 100 provided by this utility model includes a housing 1 and a cover assembly 2. The housing 1 includes a main housing 11 and a head housing 12. The main housing 11 is used to house the motor, and the head housing 12 is used to install the working head 3. To facilitate user operation during operation, an auxiliary handle 4 is provided on the outer wall of the head housing 12. The output axis of the motor, the central axis of the working head 3, and the extension axis of the auxiliary handle 4 are arranged in pairs.

[0053] To protect operator safety, reduce dust pollution, and ensure normal equipment operation, a protective cover 21 is provided on the head shell 12. The protective cover 21 has a cavity 211 with an opening 212 on one side for inserting the working head 3. The working head 3 is partially located within the cavity 211 and partially outside the cavity 211; the working head 3 located outside the cavity 211 can be used for grooving. The protective cover 21 is folded outwards around the periphery of its opening 212, and at least two guide plates are formed on both sides of the working head 3 along its axial direction. During grooving operations, the guide plates can conform to the working surface and guide the grooving path, while simultaneously enhancing the protection and structural stability of the protective cover 21.

[0054] Understandably, since the guide plate is in contact with the working surface, the distance between the guide plate and the outer edge of the working head 3 can affect the grooving depth. Furthermore, the guide plate on the side corresponding to the head shell 12 has a first plate segment 221 and a second plate segment 222. The first plate segment 221 is positioned approximately opposite to the auxiliary handle 4. Therefore, when the user holds the auxiliary handle 4 and the first plate segment 221 is in contact with the surface being processed, the grooving depth of the grooving machine 100 is limited by the position of the first plate segment 221. Setting the extension axis of the first plate segment 221 at an acute angle to the output axis of the motor increases the distance between the edge of the first plate segment 221 and the outer edge of the working head 3, thereby increasing the grooving depth and further diversifying the application scenarios of the grooving machine 100.

[0055] In one embodiment, please refer to Figure 2 The first included angle θ1 between the extension axis of the first plate segment 221 and the output axis of the motor is set to 10°~25°.

[0056] This invention does not impose specific limitations on the first included angle θ1. The first included angle θ1 can be 10°, 15°, 20°, 25°, or any other angle between 10° and 25°. By setting the first included angle θ1 to 10° to 25°, while ensuring the safety requirements of the protective cover 21 surrounding the working head 3, the overlap between the protective cover 21 and the working head 3 in the radial direction can be minimized, thereby increasing the distance between the edge of the first plate segment 221 and the outer edge of the working head 3, thus increasing the grooving depth and further diversifying the application scenarios of the grooving machine 100.

[0057] In one embodiment, please refer to Figure 2 The second included angle θ2 between the first plate segment 221 and the second plate segment 222 is set to 90°~110°.

[0058] This invention does not impose specific limitations on the second included angle θ2. The second included angle θ2 can be 90°, 95°, 100°, 105°, 110°, or any other angle between 90° and 110°. By setting the second included angle θ2 to 90° to 110°, while ensuring that the protective cover 21 surrounds the working head 3, the overlap between the protective cover 21 and the working head 3 in the radial direction can be minimized. This not only increases the distance between the edge of the first plate segment 221 and the outer edge of the working head 3, but also increases the distance between the edge of the second plate segment 222 and the outer edge of the working head 3, thereby increasing the grooving depth and further diversifying the application scenarios of the grooving machine 100.

[0059] It should be noted that either of the above two technical features can be set, or both can be set simultaneously. In one embodiment, both of the above technical features are set simultaneously.

[0060] In one embodiment, please refer to Figures 3 to 6 The protective cover 21 includes two end plates 213 and a surrounding plate 214 connecting the two end plates 213. The surrounding plate 214 is arranged around the working head 3. The two end plates 213 are respectively located on both sides of the working head 3 in its axial direction, including a first end plate 213a close to the head shell 12 and a second end plate 213b away from the head shell 12.

[0061] The first end plate 213a has a larger coverage area on the working head 3 than the second end plate 213b. The orthographic projection of the first end plate 213a on the working head 3 covers the central axis of the working head 3. The orthographic projection of the second end plate 213b on the working head 3 is offset from the central axis of the working head 3. The side of the end plate 213 away from the surrounding plate 214 is folded outward to form a guide plate.

[0062] In this embodiment, the protective cover 21 includes a first end plate 213a, a second end plate 213b, and a surrounding plate 214. The first end plate 213a and the second end plate 213b are respectively disposed on both sides of the working head 3 in its axial direction, with the first end plate 213a disposed on the side closer to the working head 3. The outward flaring of the sides of the first end plate 213a and the second end plate 213b respectively form two guide plates, which is reasonable in structural design and conducive to the lightweight of the protective cover 21.

[0063] Based on this structure, in order to improve the ease of installation of the protective cover 21, in one embodiment, please refer to... Figure 4 and Figure 5 The head shell 12 has a mounting protrusion 13 on the side facing the working head 3. The first end plate 213a has a first mounting hole 215 at the position corresponding to the central axis of the working head 3. The first end plate 213a is folded outward at the position corresponding to the periphery of the first mounting hole 215 to form an annular protrusion 216, which is fitted around the outer periphery of the mounting protrusion 13.

[0064] The grooving machine 100 also includes a clamp 5, which is fitted around the outer periphery of the annular protrusion 216 to lock and fix the annular protrusion 216 and the mounting protrusion 13, thereby locking and fixing the protective cover 21 and the head shell 12. An avoidance hole 223 is provided on the guide plate near the head shell 12 to expose the locking element 7 on the clamp 5.

[0065] In this embodiment, the head shell 12 has a mounting protrusion 13; a first mounting hole 215 is correspondingly provided on the first end plate 213a, and the periphery of the first mounting hole 215 is turned outward to form an annular protrusion 216; the mounting protrusion 13 is inserted into the inner ring of the annular protrusion 216, at which point the protective cover 21 and the head shell 12 are assembled. Subsequently, the annular protrusion 216 and the mounting protrusion 13 are locked and fixed using the clamp 5. Furthermore, the locking member 7 is operated through the clearance hole 223 on the guide plate, thereby facilitating the disassembly and assembly of the protective cover 21.

[0066] The annular protrusion 216 extends circumferentially along the first mounting hole 215, and the annular protrusion 216 is concentrically arranged with the first mounting hole 215. This invention does not impose specific limitations on the extension angle of the annular protrusion 216. Please refer to [link / reference]. Figure 5 The central angle of the annular convex edge 216 is less than 360°. Preferably, the central angle of the annular convex edge 216 is less than 180°.

[0067] In other words, the annular protrusion 216 is not arranged in a complete circle, but has a notch. When the clamp 5 locks the annular protrusion 216 and the mounting protrusion 13, the clamp 5 can simultaneously contact and lock with the annular protrusion 216 and the mounting protrusion 13, further ensuring the locking stability of the cover 21.

[0068] In one embodiment, please refer to Figure 3 , Figure 6 and Figure 7 The working head 3 has a first side 31 facing the head shell 12 and a second side 32 away from the head shell 12 in its axial direction. The two guide plates include a first guide plate 22a located on the first side 31 and a second guide plate 22b located on the second side 32. In the axial direction of the working head 3, the width of the second guide plate 22b is smaller than the width of the first guide plate 22a.

[0069] Understandably, in some application scenarios, the grooving machine 100 has an adjacent and perpendicular first plane and a second plane in its working environment. The first plane is the surface to be cut, and the second plane is parallel to the working head 3 and opposite to the second side 32 of the working head 3. During grooving operations, when the grooving position on the first plane is close to the second plane, the second guide plate 22b located on the second side 32 abuts against the second plane, which may affect the grooving position on the first plane.

[0070] By setting the second guide plate 22b to be narrower than the first guide plate 22a along the axial direction of the working head 3, the width of the second guide plate 22b is reduced, allowing the grooving positions on the first plane to be closer to the second plane, thus satisfying the need for more grooving positions. On the other hand, the first guide plate 22a is wider than the second guide plate 22b, allowing the first guide plate 22a to guide the grooving machine 100 more stably. Moreover, the wider first guide plate 22a surrounds the periphery of the head shell 12 to protect it from being hit by debris, thereby ensuring the normal operation of the grooving machine 100.

[0071] In one embodiment, a portion of the head shell 12 is flared outwards. That is, the remaining portions of the head shell 12 do not flare outwards, thus reducing the overall volume of the head shell 12. In one case, the grooving machine 100 further includes a transmission mechanism (not shown), which is located within the head shell 12 and drives the motor and the working head 3. The head shell 12 flares outwards at specific locations corresponding to certain components of the transmission mechanism, thereby providing accommodating space for the transmission mechanism. In another case, a portion of the head shell 12 is flared outwards, and an auxiliary handle 4 can be mounted on the flared portion, providing a mounting base for the auxiliary handle 4.

[0072] In one embodiment, please refer to Figure 3 and Figure 7 The first guide plate 22a surrounds the periphery of the head shell 12, and in the axial direction of the working head 3, the width of the first guide plate 22a is less than the height of the head shell 12.

[0073] Understandably, in some application scenarios, the grooving machine 100 has an adjacent and perpendicular first plane and a third plane in its working environment. The first plane is the surface to be cut, and the third plane is parallel to the working head 3 and opposite to the first side 31 of the working head 3. During grooving operations, when the grooving position on the first plane is close to the third plane, the first guide plate 22a located on the first side 31 is close to the third plane. Since the height of the first guide plate 22a is less than that of the head shell 12, the width of the first guide plate 22a does not affect the grooving position.

[0074] The first guide plate 22a is provided with a clearance part 224 to avoid the outward expansion part of the head shell 12. This can prevent interference between the outward expansion part of the head shell 12 and the first guide plate 22a.

[0075] In one embodiment, please refer to Figure 5 and Figure 7 On the side opposite to the auxiliary handle 4, the side of the enclosure 214 folds outward to form a third guide plate 22c. During the grooving operation, the third guide plate 22c can conform to the working surface and guide the grooving path, while enhancing the protection and structural stability of the protective cover 21. Furthermore, in order to meet the predetermined contour requirements of the first guide plate 22a, the second guide plate 22b, and the third guide plate 22c, the first guide plate 22a, the second guide plate 22b, and the third guide plate 22c are set separately and are not connected to each other.

[0076] In one embodiment, please refer to Figure 2 and Figure 6 Insertion holes 226 are provided on the first end plate 213a and the second end plate 213b of the protective cover 21 for inserting liquid cooling pipes. The liquid cooling pipes are inserted into the insertion holes 226, and the outlet of the liquid cooling pipes is aligned with the working head 3 to facilitate water operation of the grooving machine 100. This not only enables liquid cooling of the working head 3, but also prevents chips from flying around.

[0077] In one application scenario, during the grooving operation, the second segment 222 of the first guide plate 22a and the corresponding segment of the second guide plate 22b of the protective cover adhere to the working surface and guide the grooving path. To further improve the dust-blocking effect, in one embodiment, please refer to... Figure 8 and Figure 9 The machine cover assembly 2 also includes a baffle 23, which is located on the periphery of the working head 3 and pivotally connected to the protective cover 21. The pivot axis of the baffle 23 is parallel to the central axis of the working head 3. Thus, during the grooving operation, when the second plate segment 222 of the first guide plate 22a and the corresponding plate segment of the second guide plate 22b are in contact with the working surface and guide the grooving path, the baffle 23 can adjust its rotation angle according to the actual grooving surface conditions, thereby improving the dust-blocking effect.

[0078] The shroud assembly 2 also includes a tension spring 24, with its two ends connected to the baffle 23 and the protective cover 21, respectively. When the second segment 222 of the first guide plate 22a and the corresponding segment of the second guide plate 22b are attached to the working surface and guide the grooving path, the actual grooving surface will exert a pushing force on the baffle 23, thereby pushing the baffle 23 to rotate at a larger angle. To prevent the baffle 23 from rotating too much and failing to achieve the dust-blocking effect, a tension spring 24 is provided between the baffle 23 and the protective cover 21. The tension spring 24 pulls the baffle 23 toward the protective cover 21, thereby ensuring the dust-blocking effect.

[0079] The baffle 23 includes a base plate 231 and two side plates 232. The base plate 231 is located on the periphery of the working head 3, and the two side plates 232 are located on the side of the base plate 231 facing the working head 3, and are respectively located on both sides of the working head 3 in its axial direction. A guide plate near the head shell 12 has a clearance groove 225 to avoid the side plates 232 when the baffle 23 rotates around its pivot axis. Specifically, during the rotation of the baffle 23, in order to avoid interference between the side plates 232 of the baffle 23 and the protective cover 21, a clearance groove 225 is provided on the wider first guide plate 22a to avoid the side plates 232 when the baffle 23 rotates around its pivot axis. This ensures smooth rotation of the baffle 23.

[0080] The end of the clearance groove 225 away from the baffle 23 is closed. In this way, when the baffle 23 abuts against the closed end of the clearance groove 225 during the pivoting process of the baffle 23, the pivoting position of the baffle 23 can be restricted, and the action of the tension spring 24 on the baffle can be limited, so as to prevent the baffle 23 from contacting the working head 3 and affecting the normal operation of the working head 3.

[0081] In one embodiment, please refer to Figure 8 and Figure 9 The grooving machine 100 also includes rollers (not shown in the figure), which are rotatably mounted on the baffle 23 and located on the side away from the guard 21, so as to roll into contact with the surface to be processed when the working head 3 is working. The rotation axis of the rollers is parallel to the central axis of the working head 3. By setting the rollers, the sliding of the baffle 23 and the guard 21 along the grooving surface is made easier.

[0082] Specifically, the baffle 23 has a first side 2311 and a second side 2312 facing each other around the working head. The bottom plate 231 of the baffle 23 is pivotally connected to the cover 21 near the first side 2311. The side plate 232 of the baffle 23 has a second mounting hole 233 near the second side 2312, and the roller is movably mounted in the second mounting hole 233.

[0083] In one embodiment, please refer to Figure 8 and Figure 9The grooving machine 100 also includes a flexible baffle (not shown in the figure), which is disposed on the baffle 23 and near the second side 2312. In some applications, the grooving machine 100 operates with water. To block the mud and water stirred up by the rotating working head 3, a flexible baffle is provided on the baffle 23 to block the mud and water stirred up by the rotating working head 3. Specifically, the base plate 231 has a third mounting hole 234 at a position near the second side 2312, and the flexible baffle is installed in the third mounting hole 234.

[0084] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A slotter, characterized in that, include: The housing includes a main housing for housing a motor and a head housing for mounting a working head. The motor is driven and connected to the working head. An auxiliary handle is provided on the outer wall of the head housing. The output axis of the motor, the central axis of the working head, and the extension axis of the auxiliary handle are arranged to intersect each other in pairs. The machine housing assembly includes a cover disposed on the head shell, the cover having a cavity with an opening on one side, the working head portion being inserted into the cavity through the opening, the cover being folded outward at the periphery of its opening, and forming at least two guide plates on both sides of the working head along its axial direction. The guide plate near the head shell includes a first plate segment and a second plate segment with their edges connected at right angles or obtuse angles. The first plate segment is located on the side of the motor's output axis away from the auxiliary handle, and its extension axis is set at an acute angle to the motor's output axis.

2. The slitter according to claim 1, characterized in that, The first included angle between the extension axis of the first plate segment and the output axis of the motor is set to 10° to 25°; and / or, The second included angle between the first plate segment and the second plate segment is set to 90° to 110°.

3. The slitter as claimed in claim 1, characterized in that The protective cover includes two end plates and a surrounding plate connecting the two end plates. The surrounding plate is arranged around the working head. The two end plates are respectively located on both sides of the working head in its axial direction, including a first end plate close to the head shell and a second end plate away from the head shell. The first end plate has a larger coverage area on the working head than the second end plate. The orthographic projection of the first end plate on the working head covers the central axis of the working head. The orthographic projection of the second end plate on the working head is offset from the central axis of the working head. The end plate is folded outward from the side away from the surrounding plate to form the guide plate.

4. The slitter according to claim 3, characterized in that, The head shell has a mounting protrusion on one side of its surface facing the working head; The first end plate has a mounting hole at a position corresponding to the central axis of the working head, and the first end plate is folded outward at a position corresponding to the periphery of the mounting hole to form an annular protrusion, which is fitted onto the outer periphery of the mounting protrusion. The grooving machine also includes a clamp, which is sleeved on the outer periphery of the annular protrusion and used to lock and fix the annular protrusion and the mounting protrusion. An clearance hole is provided on the guide plate near the head shell to expose the locking element on the clamp.

5. The slitter as claimed in claim 1, wherein, The working head has a first side facing the head shell and a second side away from the head shell in its axial direction; The two guide plates include a first guide plate located on the first side and a second guide plate located on the second side, wherein the width of the second guide plate is smaller than the width of the first guide plate in the axial direction of the working head.

6. The grooving machine according to claim 5, characterized in that, The head shell is partially flared outwards; The first guide plate surrounds the periphery of the head shell, and in the axial direction of the working head, the width of the first guide plate is less than the height of the head shell. The first guide plate is provided with a clearance portion to avoid the outward expansion portion of the head shell.

7. The slitter as claimed in claim 1, wherein, The machine cover assembly also includes a baffle, which is located on the periphery of the working head and pivotally connected to the protective cover. The pivot axis of the baffle is parallel to the central axis of the working head. The shroud assembly also includes a tension spring, the two ends of which are respectively connected to the baffle and the shroud.

8. The slitter as claimed in claim 7, characterized in that The baffle includes a bottom plate and two side plates. The bottom plate is located on the periphery of the working head, and the two side plates are located on the side of the bottom plate facing the working head and are respectively located on both sides of the working head in its axial direction. The guide plate near the head shell has a clearance groove to avoid the side plate when the baffle rotates about its pivot axis.

9. The slitter as claimed in claim 7, characterized in that, The grooving machine also includes rollers, which are rotatably mounted on the baffle and located on the side away from the protective cover, so as to roll into contact with the surface to be processed when the working head is working. The rotation axis of the rollers is parallel to the central axis of the working head.

10. The slitter as claimed in claim 7, characterized in that, Along the circumferential direction of the working head, the baffle has a first side near the protective cover and a second side away from the protective cover; The grooving machine also includes a flexible baffle plate, which is disposed on the baffle plate and located near the second side.

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