CN112998577B

CN112998577B - Rolling brush body, rolling brush, dust collection equipment and forming method of rolling brush body

Info

Publication number: CN112998577B
Application number: CN202110181186.5A
Authority: CN
Inventors: 倪健; 梁永祥
Original assignee: Suzhou Kinglake Precision Molding Technology Co ltd; Kingclean Electric Co Ltd; Lexy Electric Green Energy Technology Suzhou Co Ltd
Current assignee: Suzhou Jinlaike Precision Mould Technology Co ltd; Kingclean Electric Co Ltd; Lexy Electric Green Energy Technology Suzhou Co Ltd
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2022-09-20
Anticipated expiration: 2041-02-09
Also published as: WO2022170667A1; CN112998577A

Abstract

The invention relates to the technical field of dust collection equipment, in particular to a rolling brush body, a rolling brush, dust collection equipment and a forming method of the rolling brush body. This round brush body is used for installing the cleaning piece in order to form the round brush, the round brush body includes hollow barrel, be provided with on the inner wall of barrel to the first bead that inside protrusion of barrel and spiral extend, the barrel corresponds the outer wall indent of first bead extremely the inside recess in order to form the spiral extension of first bead, the recess is used for the installation the cleaning piece, the recess has the edge first width and the second width of radially arranging from inside to outside of barrel, first width is greater than the second width. In the rolling brush body, the cylinder body is of a hollow structure, so that the weight is light, and the energy consumption required by the rotation of the rolling brush body can be reduced; the inner wall of the barrel is provided with a first convex edge which provides enough depth space for the groove so as to improve the fixing effect on the brush body; in addition, the groove is concavely arranged towards the inside of the cylinder body, so that the radial size of the rolling brush body can be reduced.

Description

Rolling brush body, rolling brush, dust collection equipment and forming method of rolling brush body

Technical Field

The invention relates to the technical field of dust collection equipment, in particular to a rolling brush body, a rolling brush, dust collection equipment and a forming method of the rolling brush body.

Background

The dust collector is a cleaning device which utilizes a motor to drive blades to rotate at a high speed and generates air negative pressure in a sealed shell to absorb dust. The rolling brush is arranged in the dust collector, and the rolling brush rotates to flap the ground to lift dust, so that the dust collection effect is improved.

The rolling brush comprises a rolling brush body and a brush body, wherein the brush body is arranged on the outer wall of the rolling brush body and extends spirally. The existing rolling brush body is generally of a solid structure, so that the rolling brush body is heavy, and energy consumption required by the rolling brush during rotation is large. Part round brush body is hollow structure, in order to guarantee the fixed effect of the brush body, is provided with the bulge on the excircle of round brush body, is provided with on the bulge with brush body complex T type recess. This arrangement can reduce the weight of the roller brush body, but increases the radial dimension of the roller brush body, and dust is likely to accumulate at the raised portion. Part of the rolling brush body is inwards concave to form a groove, but in order to ensure the depth of the groove, the diameter of an inner hole of the rolling brush body is smaller, so that the wall thickness of the rolling brush body is thicker, the weight of the rolling brush body is still larger, and the energy consumption is large.

Disclosure of Invention

The invention aims to provide a rolling brush body, a rolling brush, dust collection equipment and a forming method of the rolling brush body, which can solve the problems of heavy weight and high energy consumption of the existing rolling brush body.

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

the utility model provides a round brush body for the installation cleaning member is in order to form the round brush, the round brush body includes hollow barrel, be provided with on the inner wall of barrel to the first bead that inside protrusion of barrel and spiral extend, the barrel corresponds the outer wall indent of first bead extremely the inside recess in order to form the spiral extension of first bead, the recess is used for the installation the cleaning member, the recess has the edge first width and the second width of the radial from inside to outside range of barrel, first width is greater than the second width.

Wherein, the groove is an inverted T-shaped groove or a dovetail groove.

Wherein, the external diameter of the cylinder is 40mm-60 mm.

Wherein the wall thickness of the rolling brush body is 2mm-4 mm.

The groove comprises a first groove section and a second groove section which are communicated, and the spiral parameters of the first groove section and the second groove section are different;

the first rib comprises a first extending section and a second extending section which are connected, the first extending section corresponds to the first groove section in position and has the same spiral parameter, and the second extending section corresponds to the second groove section in position and has the same spiral parameter.

Wherein the helical parameters include a pitch, a helix angle and/or a helical direction.

Wherein the first and second groove segments have opposite helical directions.

The shape of the groove extending into the first rib is matched with that of the first rib.

The rolling brush body is formed by injection molding, the outer contour surface of the rolling brush body comprises a first molding surface and a second molding surface which are arranged along the axial direction and connected, and a clamping line is formed at the joint of the first molding surface and the second molding surface.

The rolling brush body comprises two sections of first molding surfaces, the second molding surface is located between the two sections of first molding surfaces and is respectively connected with the two sections of first molding surfaces, and the connecting part of the second molding surface and each first molding surface is provided with the clamping line.

The wire clamping device comprises a groove, a wire clamping device and a wire clamping device, wherein the wire clamping device comprises a first wire section extending in a spiral mode and a second wire section extending in the circumferential direction of the cylinder, the first wire section is parallel to the spiral direction of the groove, and the end portion of the first wire section is connected with the second wire section.

The first line segments and the second line segments are alternately connected to form the second forming surface, and the second forming surface is located beside the groove.

The inner wall of the cylinder body protrudes inwards the cylinder body and is spirally extended with a second convex rib;

or the outer wall of the barrel body protrudes out of the barrel body and is spirally extended with a second rib.

The second convex edges are arranged on the inner wall of the barrel, reference blind holes are formed in the positions, corresponding to the second convex edges, of the outer wall of the barrel, and the reference blind holes can be processed into hair planting holes.

The plurality of reference blind holes are arranged along the spiral direction of the second rib.

The outer wall of the barrel corresponding to the second rib is inwards concave to the inside of the second rib to form a concave part, and the concave part extends spirally around the axis of the barrel.

Wherein, the opening of depressed part is followed the radial of barrel is to deviating from the axis direction of barrel gradually increasing.

The first protruding edge and the second protruding edge are provided with at least two protruding edges, the first protruding edge and the second protruding edge are alternately arranged in the circumferential direction of the barrel and are distributed at even intervals, and the position, corresponding to each protruding edge, of the outer wall of the barrel is provided with the groove.

A rolling brush comprises a cleaning piece and the rolling brush body, wherein the cleaning piece is clamped in a groove.

The dust collection equipment comprises a floor brush assembly, wherein the floor brush assembly comprises a shell and the rolling brush, and the rolling brush is rotatably arranged in the shell.

A method for forming a rolling brush body is applied to an injection mold and used for processing the rolling brush body, the rolling brush body is formed by injection molding of the injection mold, the injection mold comprises an outer mold core and an inner mold core penetrating through the outer mold core, a forming cavity is formed between the inner mold core and the outer mold core when the inner mold core and the outer mold core are at forming positions, a groove forming edge for forming a groove is arranged on the outer mold core, and a first convex edge forming groove for forming a first convex edge is arranged on the inner mold core;

the molding method comprises the following steps:

an injection molding step, injecting an injection molding material into the molding cavity;

and demolding, wherein the groove forming edge and the first rib forming groove are separated from the formed rolling brush body through spiral motion.

The outer core comprises a first outer core and a second outer core, the second outer core comprises at least two clamping parts which are arranged along the circumferential direction of the rolling brush body, the groove forming edge is arranged on the inner wall of the first outer core, and the clamping parts and the first outer core are spliced to form the outer core when being positioned at a forming position; when the formed rolling brush body is formed in the forming cavity, the at least two clamping parts clamp the rolling brush body;

the demolding step comprises:

a first outer core demolding step of spirally moving the first outer core around an axis of the roll brush body to be detached from the roll brush body;

an inner core demolding step of spirally moving the inner core around an axis of the rolling brush body to be detached from the rolling brush body;

and a second outer core demolding step, wherein at least two clamping parts deviate from the rolling brush body along the radial direction of the rolling brush body so as to be separated from the rolling brush body.

The outer core comprises two first outer cores, and the clamping part is positioned between the two first outer cores and can be spliced with the two first outer cores respectively;

in the first outer core demoulding step, the two first outer cores simultaneously perform spiral motion and respectively move towards two ends of the axis of the rolling brush body.

The inner core comprises two inner core shafts, and the two inner core shafts can be spliced along the axial direction;

in the inner core demoulding step, the two inner core shafts simultaneously perform spiral motion and respectively move towards two ends of the axis of the rolling brush body.

Wherein, still include before the step of moulding plastics:

and a mold closing step, wherein the inner mold core and the outer mold core move to be in a molding position.

Wherein, still include before the step of moulding plastics: a mold closing step, wherein the mold closing step comprises:

at least two of the clamping parts approach each other until the clamping parts move to the forming positions thereof;

and the first outer core performs spiral motion until the first outer core is spliced with the clamping part to form the outer mold core, and the inner mold core performs spiral motion to be inserted into the outer mold core until the molding cavity is formed.

Has the advantages that: the invention provides a rolling brush body, a rolling brush, dust collection equipment and a forming method of the rolling brush body. In the rolling brush body, the cylinder body is of a hollow structure, so that the weight is light, and the energy consumption required by the rotation of the rolling brush body can be reduced; the inner wall of the barrel is provided with a first convex edge which provides enough depth space for the groove so as to improve the fixing effect on the brush body; in addition, the groove is concavely arranged towards the inside of the cylinder, the radial size of the rolling brush body can be reduced, the outer circular surface of the rolling brush body can be set to be a smooth surface, dust accumulation is avoided, and the rolling brush is also beneficial to molding and manufacturing.

Drawings

Fig. 1 is a schematic structural view of a vacuum cleaner according to an embodiment of the present invention;

FIG. 2 is a schematic view of another vacuum cleaner according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a rolling brush body according to an embodiment of the present invention;

FIG. 4 is a sectional view of a first roll brush body according to an embodiment of the present invention;

FIG. 5 is a schematic view of a cross section of a first roll brush body according to an embodiment of the present invention;

FIG. 6 is a schematic view of a cross section of a second roll brush body according to an embodiment of the present invention;

FIG. 7 is a schematic view of a cross section of a third roll brush body according to a first embodiment of the present invention;

fig. 8 is an exploded view of a mold for molding the roll brush body according to an embodiment of the present invention;

FIG. 9 is a schematic view of a first outer core according to one embodiment of the present invention;

FIG. 10 is a schematic view of a portion of a second outer core according to an embodiment of the present invention;

FIG. 11 is a sectional view of the outer core, the inner core and the roller brush body for molding the first type of roller brush body according to an embodiment of the present invention;

FIG. 12 is a sectional view showing a state where an outer core and an inner core for molding a first type of roll brush body according to an embodiment of the present invention are coupled;

FIG. 13 is a schematic view of a thread on the roll brush body according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of a third rolling brush body according to an embodiment of the present invention;

FIG. 15 is a sectional view showing a state where an outer core and an inner core are coupled together to form a third roll brush body according to an embodiment of the present invention;

FIG. 16 is a schematic structural view of a first roll brush body according to a second embodiment of the present invention;

FIG. 17 is a schematic view of a thread tension on the first roll brush body according to the second embodiment of the present invention;

FIG. 18 is a schematic structural view of a second roll brush body according to a second embodiment of the present invention;

fig. 19 is a schematic structural view of a second roll brush body according to a second embodiment of the present invention after a punching process;

fig. 20 is a schematic structural view of a roll brush made of a second roll brush body according to a second embodiment of the present invention;

fig. 21 is a schematic structural view of a mold for molding a roll brush body according to a second embodiment of the present invention;

fig. 22 is a schematic structural view of an injection mold according to a third embodiment of the present invention in a mold clamping state;

fig. 23 is a schematic structural view of an injection mold according to a third embodiment of the present invention, in a state where the first outer core is in a mold-released state;

FIG. 24 is a schematic structural view of an injection mold according to a third embodiment of the present invention, wherein the first outer core and the inner core are in a mold-released state;

fig. 25 is a schematic structural diagram of an injection mold in a demolding state according to a third embodiment of the present invention.

Wherein:

100. a dust collection device; 110. a floor brush assembly; 120. a shaft body;

1. a rolling brush body; 11. a barrel; 111. a groove; 1111. a first groove section; 1112. a second groove section; 1113. adapting the trough section; 1114. a penetration section; 112. a first line segment; 113. a second line segment; 114. a first molding surface; 115. a second molding surface; 116. a third line segment; 117. a recessed portion; 1171. planting hair holes; 12. a first rib; 13. a second rib; 2. a cleaning member;

200. a mold; 21. an outer core; 211. a first outer core; 2111. forming edges by grooves; 2112. splicing grooves; 212. a clamping portion; 2121. a first edge; 2122. a second edge; 2123. forming edges in a concave manner; 22. an inner core; 221. an inner mandrel; 2211. a first rib forming groove; 2212. a second rib forming groove; 222. and end sealing blocks.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly and encompass, for example, both fixed and removable connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in direct contact with the second feature but being in contact with the second feature by another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example one

The embodiment provides a dust collecting device 100, a dust collecting channel and a fan are arranged in the dust collecting device 100, a dust collecting inlet is arranged on the dust collecting device 100, and a rolling brush is rotatably arranged at the dust collecting inlet. When the fan works, the air pressure in the dust suction channel can be changed, so that an air pressure difference is formed between the inside and the outside of the dust suction device 100, and dust outside the dust suction device 100 enters the dust suction channel from the dust suction inlet under the action of the air pressure difference, so that the purposes of dust removal and cleaning are achieved. In the dust absorption process, the round brush rotates at the dust absorption entrance, treats the dust absorption surface through patting, can raise the dirt bits on treating the dust absorption surface to improve dust absorption effect.

Alternatively, the dust collecting apparatus 100 may be a vacuum cleaner or a sweeping robot, wherein the vacuum cleaner may be an upright type vacuum cleaner as shown in fig. 1, or a canister type vacuum cleaner as shown in fig. 2. In the present embodiment, the dust suction apparatus 100 is described taking a dust collector as an example.

The dust collector comprises a shaft 120, a holding part arranged at one end of the shaft 120 and a floor brush component 110 arranged at the other end of the shaft 120, wherein the floor brush component 110 comprises a shell, a dust collection inlet is arranged at the bottom surface of the shell, a dust collection port is also arranged on the shell, and the dust collection port is communicated with a dust collection container in the dust collector. The airflow carries dust on the ground to enter the dust collecting container after passing through the dust collecting inlet and the dust collecting port in sequence.

In this embodiment, as shown in fig. 3 to 5, the rolling brush includes a rolling brush body 1 and a cleaning member 2 disposed on the rolling brush body 1, the rolling brush body 1 is used to mount the cleaning member 2, and the cleaning member 2 rotates along with the rolling brush body 1 to perform a function of beating a surface to be cleaned, so as to raise dust and improve a dust-collecting effect.

Further, the cleaning piece 2 extends spirally around the axis of the rolling brush body 1, and can guide the airflow to flow along the extending direction of the cleaning piece 2 on the basis of flapping the surface to be cleaned, so as to guide the airflow to carry dust into the dust collecting port.

In addition, cleaning member 2 is the heliciform and extends, compares that cleaning member 2 is the straight line extension along the axis of the round brush body 1, can reduce the contact area and the instantaneous effort of cleaning member 2 each moment with ground, avoid subaerial particulate matter to pop beng up because of the effort that receives cleaning member 2 to prevent to increase and hard particulate matter and pop beng up the back and bounce and hinder the user or damage furniture, avoid simultaneously because of the problem that the dust bits take off the cleaning efficiency decline that leads to in the vacuum adsorption area of round brush subassembly 110.

Alternatively, the cleaning member 2 may be a brush or a leather strip. Both the brush and the leather strip are flexible, the brush is used for cleaning a carpet, and the leather strip can be used for cleaning a floor.

Alternatively, the cleaning element 2 and the roller brush body 1 can be injection-molded or adhesively fixed. Because the cleaning part 2 has certain flexibility, the material of the cleaning part is different from that of the rolling brush body 1, when the cleaning part 2 is connected with the rolling brush body 1 in an injection molding mode, the cleaning part 2 and the rolling brush body 1 need to be subjected to double-color mold injection molding, and the cost is high. And the bonding fixing strength is poor, so that the cleaning piece 2 is easily separated from the rolling brush body 1, and the use experience of a user is influenced.

In order to solve the above problem, in the present embodiment, the cleaning element 2 can be fixed to the rolling brush body 1 in a snap-fit manner. As shown in fig. 3 and 4, the rolling brush body 1 includes a hollow cylinder 11, the outer wall of the cylinder 11 is recessed inwards to form a groove 111 for mounting the cleaning element 2, the groove 111 extends spirally, and the groove 111 is used for clamping the cleaning element 2. On one hand, the hollow cylinder body 11 can reduce the weight of the rolling brush body 1, thereby reducing the energy consumption required by the rolling brush rotation; on the other hand, the material consumption can be reduced on the basis of not changing the appearance size of the rolling brush body 1, thereby saving the cost.

In order to ensure that the groove 111 has enough depth to improve the fixing effect of the cleaning element 2, the inner wall of the barrel 11 is provided with the first rib 12 which protrudes towards the inside of the barrel 11 and extends spirally, the groove 111 corresponds to the first rib 12 and extends to the inside of the first rib 12, and the depth requirement of the groove 111 is met by the first rib 12.

In addition, compared with the structure that the protruding part is arranged on the outer wall of the cylinder body 11 to process the groove 111, the first rib 12 is arranged on the inner wall of the cylinder body 11, so that the surface of the outer wall of the cylinder body 11 is regular, and dust accumulation is avoided.

In order to facilitate the fixing of the cleaning element 2 and the rolling brush body 1, at least one end of the groove 111 along the length direction penetrates through the axial end face of the cylinder body 11, the groove 111 has a first width and a second width which are arranged from inside to outside along the radial direction of the cylinder body 11, and the first width is larger than the second width. Through the arrangement, the structure in the groove 111 can be prevented from being separated from the opening of the groove 111, and the cleaning piece 2 is clamped with the groove 111, so that the cleaning piece 2 and the groove 111 do not need to be additionally provided with a fastening piece or adhered and fixed, and the structure is simple.

In this embodiment, two ends of the groove 111 penetrate through the end surface of the cylinder 11, so that the cleaning element 2 can be inserted into the groove 111 from any end, and the installation is convenient.

For convenience of explaining the structure of the groove 111, a certain section of the rolling brush body 1 is selected as shown in fig. 5, and in the embodiment, the groove 111 is of an inverted T shape and comprises a first groove and a second groove which are communicated, wherein the first groove is positioned on one side of the second groove close to the axis of the cylinder body 11. The cross-sectional shapes of the first groove and the second groove are both rectangular, the width of the first groove is kept constant along the radial direction of the cylinder 11, and the width of the second groove is kept constant along the radial direction of the cylinder 11. Wherein, the width of first cell body is first width M, and the width of second cell body is second width N, and first width M is greater than second width N for the opening of recess 111 presents closed trend, can prevent that cleaning member 2 from deviating from by in the recess 111.

In addition, the second groove body has a certain depth along the radial direction of the barrel body 11, and two opposite side surfaces of the second groove body can be abutted to the cleaning piece 2, so that the cleaning piece 2 is limited to move in the circumferential direction of the barrel body 11, the cleaning piece 2 is fixed more firmly, and the cleaning effect is improved.

Alternatively, as shown in fig. 6, the groove 111 may have a multi-segment first groove body and/or a multi-segment second groove body.

It is understood that the width of the groove 111 may be varied abruptly or gradually from the first width M to the second width N. When the width of the groove 111 changes suddenly, the groove 111 is divided into a plurality of sections along the radial direction of the cylinder 11, and a transition step surface is formed between the two adjacent sections, so that the cleaning piece 2 can be limited.

When the width of the groove 111 changes gradually, the groove 111 may be a dovetail groove, or as shown in fig. 7, the inner wall of the groove 111 is a cambered surface, so that the width of the groove 111 decreases gradually along the radial direction of the cylinder 11, and the inner wall of the groove 111 has a limiting effect on the cleaning element 2, and can prevent the cleaning element 2 from being pulled out of the groove 111.

It is to be understood that the shape of the groove 111 is not limited to the above shape as long as the width of the groove 111 is varied and the wider first width is located on the side of the narrower second width closer to the axis of the cylinder 11.

Further, the shape of the groove 111 extending into the first rib 12 can be matched with the shape of the first rib, so that the wall thickness formed by the first rib 12 and the groove 111 is uniform, which is beneficial to maintaining the dynamic balance of the rolling brush body 1 during the rotation process.

Further, the wall thickness of the barrel 11 may be substantially the same as the corresponding wall thickness of the first rib 12, so as to further ensure the dynamic balance during the rotation of the rolling brush body 1.

For convenience of description, a portion of the groove 111 extending into the first rib 12 is referred to as an adapting groove section 1113, and a portion of the groove 111 penetrating through the outer wall of the barrel 11 is referred to as a penetrating section 1114. The shape of the fitting groove segment 1113 is the same as that of the rib, the surface of the fitting groove segment 1113 on the side away from the axis of the cylinder 11 is the top surface, and the surface on the side close to the axis of the cylinder 11 is the bottom surface, the top surface of the fitting groove segment 1113 is substantially coplanar with the inner surface of the cylinder 11, and the distance between the bottom surface of the fitting groove segment 1113 and the surface of the first rib 12 on the side toward the axis of the cylinder 11 is substantially equal to the wall thickness of the cylinder 11.

In this embodiment, the wall thickness of the rolling brush body 1 is 2-4mm, and the wall thickness of the rolling brush body 1 is within this range, which not only can satisfy the strength requirement of the rolling brush body 1, but also can reduce the weight of the rolling brush body 1 on the basis of the unchanged outer diameter size of the rolling brush body, thereby controlling the cost and the energy consumption of the rolling brush body 1 during operation.

Illustratively, the wall thickness of the roller-brush body 1 may be 2mm, 2.3mm, 2.5mm, 2.7mm, 3mm, 3.3mm, 3.5mm, 3.7mm, 4 mm.

In the prior art, the roll brush body is generally formed by twisting after being extruded by an extrusion die. Specifically, the conventional roller brush body includes a solid shaft body and a mounting structure (a rib or a groove) provided on the shaft body and extending in an axial direction. The axis body and mounting structure pass through extrusion process shaping back, exert opposite moment of torsion to the both ends of axis body for the axis body drives mounting structure and twists reverse around the axis of axis body, thereby makes mounting structure be the heliciform and extends.

In the forming process, the rolling brush body needs to be formed by twisting, and the material selected by the rolling brush body needs to have certain flexibility, so that the strength of the rolling brush body is insufficient, and the cleaning effect is influenced; in addition, in order to avoid excessive deformation of the rolling brush body during twisting, the shaft body can only be of a solid structure, and if the shaft body is a hollow cylinder body, the hollow cylinder body is easy to collapse in the twisting process, so that the hollow cylinder body is scrapped.

In addition, since the outer diameter of the shaft body is generally small due to the extrusion process limitation, the produced roll brush body can be applied only to a small-sized dust collecting apparatus 100.

In order to solve the above problem, in the present embodiment, the roll brush body 1 is formed by injection molding. The material strength of the rolling brush body 1 is good, and the use requirement can be met; the rolling brush body 1 can be of a hollow structure, so that not only can the cost be reduced, but also the energy consumption of the rolling brush body 1 during working can be reduced; the size of the injection molded rolling brush body 1 can be set according to actual needs, and the problem that the size of the rolling brush body 1 is limited is solved.

Illustratively, the outer diameter of the cylinder 11 may be 40mm to 60mm, and specifically may be 40mm, 42mm, 45mm, 47mm, 49mm, 50mm, 52mm, 55mm, 57mm, 59mm, 60 mm.

As shown in fig. 8, the mold 200 for molding the roll brush body 1 includes an outer core 21 and an inner core 22, the inner core 22 is inserted into the outer core 21, a cavity for molding the roll brush body 1 is provided between the inner core 22 and the outer core 21, and the outer wall of the inner core 22 and the inner wall of the outer core 21 are molding surfaces for molding the inner wall of the roll brush body 1 and the outer wall of the roll brush body 1, respectively. Wherein, the inner core 22 is provided with a rib forming groove for forming the first rib 12, and the outer core 21 is provided with a groove forming rib 2111 for forming the groove 111. The inner core 22 includes an inner core shaft 221 and an end block 222, and the end block 222 is adapted to abut against the inner core shaft 221 and an end of the outer core 21 to close the molding cavity.

The traditional injection mold comprises a fixed mold and a movable mold, wherein a molding cavity is formed between the fixed mold and the movable mold after the fixed mold and the movable mold are close to each other and are assembled. After the fixed die and the movable die are away from each other, the die is separated from a formed product. If the formed product comprises an inner hole, the injection mold also comprises a core body, and the core body is arranged in the cavity and used for forming the inner hole; when demoulding, the core body is drawn out along the axial direction of the inner hole to realize demoulding.

Due to the special shape of the groove 111, the width change of the groove 111 prevents the mold from being separated from the groove 111 along the radial direction of the cylinder 11, so that the outer core 21 cannot be demolded in a demolding mode of a fixed mold and a movable mold in the traditional mold; the first rib 12 extending spirally is provided on the inner wall of the cylinder 11, and the inner core 22 forming the inner wall structure of the cylinder 11 cannot be separated from the cylinder 11 by moving in the axial direction of the cylinder 11 due to the interference of the first rib 12.

For this reason, in the present embodiment, the rib forming groove and the groove forming rib 2111 are released in the axial direction of the roll brush body 1 by the spiral motion. However, when both the outer core 21 and the inner core 22 are released by the screw motion, after one of the outer core 21 and the inner core 22 is separated from the roller brush body 1 by the screw motion, the roller brush body 1 needs to be kept stationary so that the other of the outer core 21 and the inner core 22 can move relative to the roller brush body 1 to perform the releasing.

In order to solve the above problem, in the present embodiment, the outer core 21 includes a first outer core 211 and a second outer core joined to an axial end of the first outer core 211, and the second outer core includes at least two clamping portions 212 joined in a circumferential direction of the rolling brush body 1, and the at least two clamping portions 212 can be relatively close to each other to be joined to the first outer core 211 and can also be spaced apart from each other in a radial direction of the rolling brush body 1 to be separated from the rolling brush body 1 therein.

When demoulding, the second outer core is fixed, so that the position of the rolling brush body 1 is kept to be fixed through the spiral matching surface between the second outer core and the rolling brush body 1; on this basis, the first outer core 211 and the inner core 22 are spirally demolded about the axis of the roll brush body 1.

After the first outer core 211 and the inner core 22 are separated from the roller brush body 1, at least two clamping sections in the second outer core are separated, the roller brush body 1 is directly separated from the first outer core 211, the product ejection is not needed, and the demolding process is further simplified.

In the embodiment, the rolling brush body 1 is formed in sections, so that the technical bias that the rolling brush body 1 is difficult to perform injection molding processing is overcome, the technical problem of how to demold the structural member after injection molding is solved, and great contribution is made to production and application of the rolling brush body 1.

Specifically, as shown in fig. 9, the first outer core 211 is of a sleeve structure, an inner wall of the first outer core 211 is used for forming an outer wall of the roller brush body 1, a groove forming rib 2111 is provided on the inner wall of the first outer core 211, the groove forming rib 2111 extends in a spiral direction, and an outer contour shape matches a shape of the groove 111. One end of the first outer core 211 is provided with a splicing groove 2112 spliced and fitted with the clamping portion 212, and the splicing groove 2112 extends in the spiral direction of the groove 111 in the axial direction. Correspondingly, as shown in fig. 10, the clamping portion 212 in the second outer core extends along the spiral direction of the groove 111, so that when the first outer core 211 moves spirally, the splicing groove 2112 on the first outer core 211 can be spirally sleeved outside the clamping portion 212, and the splicing fit of the clamping portion 212 and the splicing groove 2112 is realized.

In this embodiment, the second outer core includes four clamping portions 212, the four clamping portions 212 are uniformly spaced along the circumference of the barrel 11, correspondingly, the first outer core 211 is provided with four splicing grooves 2112, and each clamping portion 212 can be spliced with the corresponding splicing groove 2112, so that the first outer core 211 and the second outer core are matched to form a complete outer wall of the rolling brush body 1.

In other embodiments, the number of the clamping portions 212 may be two, three, or more than four, as long as the rolling brush body 1 can be fixed, and the specific number may be set according to actual needs.

As shown in fig. 11 and 12, the inner core 22 includes an inner core shaft 221, and a first rib forming groove 2211 is provided on an outer wall of the inner core shaft 221, and the first rib forming groove 2211 extends in a spiral direction and has a shape matching an outer contour shape of the first rib 12.

Correspondingly, as shown in fig. 13, in the rolling brush body 1 molded by using the mold 200, the outer contour surface of the rolling brush body 1 includes a first molding surface 114 and a second molding surface 115 which extend in the axial direction and are connected, the first molding surface 114 is molded by a first outer core 211, and the second molding surface 115 is molded by a second outer core. Since the first molding surface 114 and the second molding surface 115 are respectively molded by using two-stage outer cores, a clamping line is formed between the first molding surface 114 and the second molding surface 115.

It should be noted that the thread clamping is a protruding structure formed at a corresponding position of a joint of two adjacent outer cores on the rolling brush body 1, that is, a certain splicing gap exists between the two adjacent outer cores, which results in a residual splicing trace on a molded product.

It will be appreciated that the specific shape of the pinch line on the roller-brush body 1 is related to the outer core type of splice gap.

In this embodiment, the clamping wire includes a first wire section 112 extending in a spiral manner and a second wire section 113 extending in a circumferential direction of the cylinder 11, the first wire section 112 is parallel to the spiral direction of the groove 111, and an end of the first wire section 112 is connected to the second wire section 113. Specifically, as shown in fig. 10, the clamping portion 212 has an abutting surface that clamps the roller brush body 1 and shapes a part of the outer peripheral surface of the roller brush body 1, and the abutting surface includes two first edges 2121 parallel to the spiral direction of the groove 111 and two second edges 2122 extending around the circumferential direction of the barrel 11. The two first edges 2121 and one of the second edges 2122 are matched with the splicing groove 2112, a first line segment 112 is correspondingly formed between the first edge 2121 and the side wall of the splicing groove 2112, and a second line segment 113 is formed between the second edge 2122 and the splicing seam. A second line segment 113 is correspondingly formed between the other second edge 2122 and the end block 222.

Wherein two first line segments 112 and two second line segments 113 are alternately connected and enclose a second molding surface 115, the second molding surface 115 being located at the side of the groove 111.

The clamping line further comprises a third line segment 116, the third line segment 116 is correspondingly formed on the rolling brush body 1 at the joint of the outer core 21 and the end sealing block 222, part of the third line segment 116 is overlapped with the second line segment 113, and the third axial end 116 is located at one end face of the rolling brush body 1 and extends along the outer contour line of the end face.

In fig. 13, the clamps are each shown as a thickened line.

In order to ensure smooth demolding of the second outer core, the groove forming rib 2111 of the forming groove 111 is located on the first outer core 211 to ensure that the first outer core 211 can be demolded in a spiral manner, and the clamping portions 212 in the second outer core can be demolded in a manner of being away from each other.

In this embodiment, cleaning member 2 on the rolling brush body 1 includes leather strip and brush, and the leather strip is fixed through recess 111 joint, and the brush is fixed in on the rolling brush body 1 through planting the hair mode. The brush is used for cleaning carpets. In some embodiments, the brush includes a plurality of bristles, each of which is planted on the outer wall of the roller brush body 1, and the plurality of bristles are spirally arranged to form the brush.

In order to ensure the depth of the implanted bristles, as shown in fig. 14, a second rib 13 extending spirally is convexly formed on the inner wall or the outer wall of the barrel 11, and a plurality of tufts of bristles are arranged on the roller brush body 1 at positions corresponding to the second rib 13. Can increase the wall thickness of the round brush body 1 of planting the hair department through setting up second bead 13, guarantee to plant the hair degree of depth, avoid the brush hair to drop, can reduce the influence of planting hair hole 1171 to the 1 intensity of round brush body simultaneously, and then improve the bulk strength of the round brush body 1.

In order to avoid increasing the size of the roll brush body 1 to the second ribs 13, in the present embodiment, the second ribs 13 are provided on the inner wall of the barrel 11. In addition, the second convex ridge 13 is arranged on the inner wall of the barrel body 11, so that the outer wall of the barrel body 11 can be prevented from having an outward protruding structure, and therefore hair is prevented from being wound on the protruding structure, and dust is prevented from being accumulated on the protruding structure.

Further, a recess 117 is provided on the outer wall of the cylinder 11 at a position corresponding to the second rib 13, and the recess 117 extends spirally around the axis of the cylinder 11. With the use of the roll brush, the brush is easily wound with hairs, and the hairs on the brush need to be cleaned regularly, for example, the hairs on the brush are cut by a blade. Through setting up depressed part 117, can make winding hair unsettled in depressed part department, help the blade to carry out cutting operation, conveniently clear up the hair.

Optionally, the opening of the recess 117 gradually increases in the radial direction of the barrel 11 away from the axis of the barrel 11, so that the recess 117 is convenient to form on one hand, and the entangled hair can be cleaned on the other hand.

Correspondingly, as shown in fig. 15, the injection mold for forming the rolling brush body 1 shown in fig. 14 further includes a concave forming rib 2123 for forming the concave portion 117 on the outer core 21, and a second rib forming groove 2212 for forming the second rib 13 on the inner core 22. Specifically, a partially recessed molding rib 2123 is provided on the clamping portion 212.

In order to improve the hair planting precision, a reference blind hole is arranged on the outer wall of the barrel body 11 at a position corresponding to the second convex edge 13. In the mold 200 for molding the rolling brush body 1, a positioning convex column is arranged at a position of the outer core 21 corresponding to the second convex edge 13, and the positioning convex column can form a reference blind hole on the outer wall of the rolling brush body 1. The reference blind hole and the cylinder 11 are integrally formed, the reference blind hole can be used as a reference blind hole of the bristle planting hole 1171, the bristle planting hole 1171 is formed by reprocessing the reference blind hole, bristles are fixed, and bristle planting precision is improved.

Specifically, the location projection sets up on the outer core of second, not only can the shaping benchmark blind hole, can improve the outer core of second and the fixed effect of the rolling brush body 1 moreover, avoids first outer core 211 and interior core 22 spiral drawing of patterns to drive the rolling brush body 1 and remove.

Furthermore, the reference blind holes are arranged in a plurality of numbers and are arranged along the spiral direction of the second convex edge so as to guide the hair planting direction of the multiple clusters of bristles.

Optionally, the first rib 12 and the second rib 13 may be provided with at least two, and the first rib 12 and the second rib 13 are alternately arranged along the circumferential direction of the barrel 11, and each first rib 12 is correspondingly provided with a groove 111, so that the brushes and the strips are alternately distributed, which is beneficial to improving the cleaning effect.

Further, the at least two first ribs 12 and the at least two second ribs 13 may be distributed at even intervals, so that the mass distribution of the rolling brush body 1 is more symmetrical, and the rolling brush body 1 can be prevented from shaking during rotation.

In some embodiments, the brush in the rolling brush can not be fixed on the rolling brush body through the hair planting mode, because the single or the list setting of brush hair in the brush, the brush hair can be lamellar structure, also can be cylindric structure, because of single cylindric brush hair or the soft single lamellar brush hair foot, adopts the fixed difficult operation of planting the hair, and the precision is relatively poor. For this, the brush further includes a mounting part on which a plurality of or more bristles are disposed, the mounting part being mounted in the groove 111, thereby achieving fixation of the brush.

Example two

The present embodiment provides a dust collecting apparatus 100, which is further improved on the roller brush body 1 based on the first embodiment to improve the dust collecting effect of the roller brush body 1.

Specifically, as shown in fig. 16, the groove 111 includes a first groove section 1111 and a second groove section 1112 which are communicated, and the spiral parameters of the first groove section 1111 and the second groove section 1112 are different, so that the whole groove 111 has a variable spiral structure, so as to achieve a dust removing effect or better according to the use requirement. Correspondingly, the first rib 12 includes a first extension corresponding to the first groove section 1111 and having the same spiral parameter, and a second extension corresponding to the second groove section 1112 and having the same spiral parameter, so as to ensure the design requirement of the depth of the groove 111.

It is understood that after the groove 111 is divided into multiple segments according to different spiral parameters, the core in the mold 200 is divided into multiple segments with the same number, so that each segment of the core in the mold 200 can be rotationally demolded. Among other things, the helical parameters include, but are not limited to, helix angle, handedness, and pitch.

In this embodiment, the first slot segment 1111 and the second slot segment 1112 have opposite spiral directions. By dividing the first rib 12 and the groove 111 into two sections with opposite spirals, the surface of the roll brush body 1 is formed into a V-shaped structure. After installation cleaning member 2, cleaning member 2 corresponds to the type V, and this kind of setting can lead to the gathering of the hookup location department of the first trough section 1111 of air flow direction and second trough section 1112 to play the effect of gathering together to the grids, avoid the grids of raising to the axial both ends diffusion of the round brush body 1, reduce the secondary pollution to the dust absorption surface, thereby improve and clean efficiency and dust collection effect.

In the present embodiment, the diameter of the cylinder 11 is kept constant along the axial direction thereof, and thus, the spiral diameters of the first groove section 1111 and the second groove section 1112 are constant.

In the present embodiment, as shown in fig. 17, the rolling brush body 1 includes two first molding surfaces 114, a second molding surface 115 is located between the two first molding surfaces 114 and is connected to the two first molding surfaces 114, a clamping wire is formed at a connection position of the second molding surface 115 and each first molding surface 114, and a clamping wire is formed at a connection position of the two first molding surfaces 114. In fig. 17, the bold line indicates the pinch line on the roll brush body 1.

Alternatively, as shown in fig. 18, the rolling brush body 1 in the present embodiment is provided with a recess 117 and a groove 111. As shown in fig. 19, after the hole drilling process is performed on the molded roll brush body 1, a plurality of bristle planting holes 1171 are formed in the recess 117. The roll brush manufactured by using the roll brush body 1 is shown in fig. 20, wherein two leather strips and two brushes are respectively arranged on the roll brush body.

Correspondingly, as shown in fig. 21, in the mold 200 for molding the roller brush body 1, the outer core 21 includes two first outer cores 211, and the two first outer cores 211 are respectively located at two axial ends of a second outer core. The inner core 22 correspondingly comprises two inner mandrels 221, the two inner mandrels 221 being axially spliced.

Alternatively, the lengths of the first slot section 1111 and the second slot section 1112 may be equal or different, and may be determined according to the position of the dust collecting opening on the housing in the floor brush assembly 100, so that the connection position of the first slot section 1111 and the second slot section 1112 is opposite to the dust collecting opening.

Further, the two inner mandrels 221 can be demolded synchronously, so that the forces applied to the two ends of the roller brush body 1 during demolding of the inner mandrel 22 are balanced, and the roller brush body 1 is further ensured to be stationary.

In addition, the inner core 22 is divided into two sections and demolded simultaneously, which can shorten the demolding stroke of the inner core 22, thereby reducing the overall demolding time and improving the demolding efficiency.

It should be noted that, in the present embodiment, reference may be made to the structure in the first embodiment for the structures of the first outer core 211 and the two inner core shafts 221, and details are not described here again.

In the injection mold, the clamping portion 212 may be used to mold a part of the recess 117, or may be used to mold a position on the cylinder 11 where the recess 117 and the groove 111 are not provided, but cannot be used to mold the groove 111.

EXAMPLE III

The present embodiment provides a method for molding a rolling brush body 1 according to the first embodiment or the second embodiment, and the method is applied to an injection mold. Specifically, the roller brush body 1 is formed by injection molding. The injection mold comprises an outer mold core 21 and an inner mold core 22 arranged in the outer mold core 21 in a penetrating mode, when the inner mold core 22 and the outer mold core 21 are located at a forming position, a forming cavity is formed between the inner mold core 22 and the outer mold core 21, and the rolling brush body 1 is formed in the forming cavity between the outer mold core 21 and the inner mold core 22. Wherein, the outer core is provided with a groove forming edge 2111 for forming the groove, and the inner core 22 is provided with a convex edge forming groove for forming the first convex edge 12.

The molding method provided by the embodiment comprises a mold closing step, an injection molding step and a demolding step. In the mold clamping step, the inner core 22 and the outer core 21 are moved to the molding position, and specifically, as shown in fig. 22, the inner core 22 is extended into the outer core 21 to define a molding cavity, and injection of the injection molding material is awaited. In the injection molding step, injection molding materials are injected into the molding cavity, and the molding cavity is filled with the injection molding materials. After the injection molding material is solidified, the demolding step is carried out, and the groove forming edge 2111 and the rib forming groove are separated from the formed rolling brush body 1 through spiral motion around the axis of the rolling brush body 1.

In this embodiment, the demolding is realized by using a spiral motion mode to mold the part of the structure of the groove 111 and the rib 12 in the injection mold, so as to solve the problem in the prior art that the groove 111 with a special shape listed in the first embodiment is difficult to be injection molded.

Specifically, the outer core 21 includes a first outer core 211 and a second outer core spliced to an axial end of the first outer core 211, and the second outer core includes at least two clamping portions 212 arranged in the circumferential direction of the roll brush body 1. When the clamping part 212 and the first outer core 211 are positioned at the molding position, the outer core 21 is formed by splicing; when the formed roll brush body is formed in the forming cavity, the roll brush body is clamped by at least two clamping portions 212.

The demolding step specifically comprises:

a first outer core mold release step of spirally moving the first outer core 211 around the axis of the roll brush body 1 to be separated from the roll brush body 1; at this time, the clamping portions 212 clamp the roll brush body, for example, as shown in fig. 23, at least two clamping portions 212 clamp the roll brush body 1;

an inner core demolding step of spirally moving the inner core 22 around the axis of the rolling brush body 1 to be detached from the rolling brush body 1, as shown in fig. 24;

in the second outer core removing step, at least two clamping portions 212 are separated from the roller brush body 1 in the radial direction of the roller brush body 1 to be separated from the roller brush body 1, as shown in fig. 25.

In the demolding step, the first outer core 211 and the inner core 22 are demolded firstly on the basis that the second outer core is kept still, so that the rolling brush body 1 can be prevented from rotating along with the first outer core 211 or the inner core 22, and smooth demolding of the first outer core 211 and the inner core 22 is facilitated.

When the first outer core 211 and the inner core 22 are demolded, the second outer core is stationary to keep the position of the roll brush body 1 stationary through the spiral mating surface between the second outer core and the roll brush body 1; on this basis, the first outer core 211 and the inner core 22 rotate around the axis of the roll brush body 1, respectively. Because the first outer core 211 and the inner core 22 are both in spiral fit with the rolling brush body 1, the first outer core 211 and the inner core 22 can move along the axial direction of the rolling brush body 1 in the rotating process and further separate from the rolling brush body 1, so that the first outer core 211 and the inner core 22 are demolded.

The second outer core realizes demoulding by the radial movement of at least two clamping parts 212 along the roller brush body 1, and after the first outer core 211 and the inner core 22 are separated from the roller brush body 1, the roller brush body 1 can be directly separated from the mould 200 by the mutual separation of the two clamping parts 212, so that the product ejection is not needed, and the demoulding process is further simplified.

It should be noted that the demolding step is also applicable to the structure of the outer core shown in fig. 8, and the description of this embodiment is omitted here.

It is understood that the moving direction of the outer core 21 and the inner core 22 in the mold clamping step is opposite to the moving direction in the mold releasing step. Specifically, the mold closing step comprises:

at least two of the clamping portions 212 are brought closer together until the second outer core is moved to its molding position;

the first outer core 211 and the inner core 22 move spirally and in the opposite direction to the demolding direction, the first outer core 211 moves spirally until the first outer core 211 is spliced with the clamping part 212 to form the complete outer core 21, and the inner core 22 moves spirally and is inserted into the outer core 21 until the inner core 22 and the outer core 21 enclose a molding cavity.

In the step of die assembly, the second outer core returns first, so that the first outer core 211 can be spliced with the second outer core through spiral motion, and the splicing precision of the second outer core and the first outer core is improved.

Specifically, the outer core 21 includes two first outer cores 211, and the second outer core is located between two first outer cores 211 to the embodiment that can splice with two first outer cores 211 respectively, through setting up two first outer cores 211, in first outer core drawing of patterns step, two first outer cores 211 begin the screw motion simultaneously, and move to the both ends of the rolling brush body 1 respectively, can shorten outer core 21 drawing of patterns time on the unchangeable basis of the length of the rolling brush body 1, improve production efficiency.

Further, the groove-forming ribs 2111 on the two first outer cores 211 may be different, so that the formed groove 111 has two different helical parameters. Illustratively, the two first outer cores 211 may respectively form the first slot segment 1111 and the second slot segment 1112 in embodiment two.

Correspondingly, the inner core 22 comprises two inner mandrels 221, and the two inner mandrels 221 can be spliced in the axial direction. In the inner core demoulding step, the two inner mandrels 221 start to perform spiral motion simultaneously and move towards the two ends of the rolling brush body 1 respectively, so that the demoulding time of the inner core 22 can be shortened on the basis of unchanging the length of the rolling brush body 1, and the production efficiency is improved.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.

Claims

1. A rolling brush body used for installing a cleaning piece (2) to form a rolling brush is characterized in that the rolling brush body is formed by injection molding and comprises a hollow cylinder body (11), a first rib (12) which protrudes towards the inside of the cylinder body (11) and extends spirally is arranged on the inner wall of the cylinder body (11), the cylinder body (11) is inwards concave to the inside of the first rib (12) corresponding to the outer wall of the first rib (12) to form a groove (111) which extends spirally, the groove (111) is used for installing the cleaning piece (2), the groove (111) has a first width and a second width which are arranged from inside to outside along the radial direction of the cylinder body (11), and the first width is larger than the second width;

the inner wall of the cylinder body (11) protrudes towards the inside of the cylinder body (11) and is spirally extended with a second convex rib (13);

or the outer wall of the cylinder body (11) protrudes outwards towards the cylinder body (11) and is spirally extended with a second convex rib (13).

2. A roller brush body according to claim 1, characterized in that the groove (111) is an inverted T-shaped groove or a dovetail groove.

3. The rolling brush body according to claim 1, wherein the outer diameter of the cylinder (11) is 40mm to 60 mm.

4. The rolling brush body according to claim 1, wherein the wall thickness of the rolling brush body is 2mm to 4 mm.

5. A brush roller according to claim 1, wherein the groove (111) comprises a first (1111) and a second (1112) groove section in communication, the first (1111) and the second (1112) groove section having different spiral parameters;

the first rib (12) comprises a first extension and a second extension which are connected, the first extension corresponds to the position of the first groove section (1111) and has the same spiral parameter, and the second extension corresponds to the position of the second groove section (1112) and has the same spiral parameter.

6. The rolling brush body of claim 5, wherein the helical parameters include a pitch, a helix angle, and/or a helical direction.

7. The brush roll according to claim 5, wherein the first groove segment (1111) and the second groove segment (1112) have opposite spiral directions.

8. A roller body according to any one of claims 1-7, characterized in that the shape of the groove (111) extending into the first rib (12) is adapted to the shape of the first rib (12).

9. A brush body according to any one of claims 1-7, wherein the brush body is injection moulded, the outer contour surface of the brush body comprising a first moulding surface (114) and a second moulding surface (115) which are axially aligned and connected, the junction of the first moulding surface (114) and the second moulding surface (115) forming a pinch line.

10. A roller brush body according to claim 9, characterized in that it comprises two lengths of said first moulding surface (114), said second moulding surface (115) being located between the two lengths of said first moulding surface (114) and being connected to the two lengths of said first moulding surface (114), respectively, said pinch line being formed at the connection of said second moulding surface (115) to each of said first moulding surfaces (114).

11. The roll brush body according to claim 10, wherein the pinch comprises a first line segment (112) extending spirally and a second line segment (113) extending in a circumferential direction of the cylinder (11), the first line segment (112) being parallel to a spiral direction of the groove (111), an end of the first line segment (112) being connected to the second line segment (113).

12. A roller brush body according to claim 11, wherein two of said first line segments (112) and two of said second line segments (113) are alternately connected to enclose said second molding surface (115), said second molding surface (115) being located beside said groove (111).

13. The roller brush body according to any one of claims 1-7, wherein the second rib (13) is arranged on the inner wall of the cylinder (11), and a blind reference hole is arranged on the outer wall of the cylinder (11) at a position corresponding to the second rib (13), and the blind reference hole can be processed into a bristle planting hole (1171).

14. The rolling brush body according to claim 13, wherein a plurality of the blind reference holes are provided, and a plurality of the blind reference holes are arranged in a spiral direction of the second rib (13).

15. The roll brush body according to any one of claims 1-7, wherein the outer wall of the cylinder (11) corresponding to the second rib (13) is recessed inside the second rib (13) to form a recess (117), the recess (117) spirally extending around the axis of the cylinder (11).

16. The rolling brush body according to claim 15, wherein the opening of the recess (117) is gradually increased in a radial direction of the cylinder (11) toward an axial direction away from the cylinder (11).

17. The rolling brush body according to any one of claims 1-7, wherein at least two first ribs (12) and at least two second ribs (13) are provided, the first ribs (12) and the second ribs (13) are alternately arranged and uniformly spaced along the circumference of the barrel (11), and the groove (111) is provided on the outer wall of the barrel (11) at the position corresponding to each first rib (12).

18. A rolling brush body used for installing a cleaning piece (2) to form a rolling brush is characterized in that the rolling brush body is formed by injection molding and comprises a hollow cylinder body (11), a first rib (12) which protrudes towards the inside of the cylinder body (11) and extends spirally is arranged on the inner wall of the cylinder body (11), the cylinder body (11) is inwards concave to the inside of the first rib (12) corresponding to the outer wall of the first rib (12) to form a groove (111) which extends spirally, the groove (111) is used for installing the cleaning piece (2), the groove (111) has a first width and a second width which are arranged from inside to outside along the radial direction of the cylinder body (11), and the first width is larger than the second width;

the first rib (12) comprises a first extension section and a second extension section which are connected, the groove (111) comprises a first groove section (1111) and a second groove section (1112) which are communicated, the spiral parameters of the first groove section (1111) and the second groove section (1112) are different, the position of the first extension section and the first groove section (1111) corresponds to each other, the spiral parameters are the same, and the position of the second extension section and the second groove section (1112) corresponds to each other and the spiral parameters are the same.

19. A brush roller according to claim 18, wherein the recess (111) is an inverted T-shaped groove or a dovetail groove.

20. The rolling brush body according to claim 18, wherein the outer diameter of the cylinder (11) is 40mm to 60 mm.

21. The rolling brush body according to claim 18, wherein the wall thickness of the rolling brush body is 2mm to 4 mm.

22. The rolling brush body according to claim 18, characterized in that the first rib (12) comprises a first stretch corresponding to the position of the first groove section (1111) and having the same spiral parameter, and a second stretch corresponding to the position of the second groove section (1112) and having the same spiral parameter, which are connected.

23. The rolling brush body of claim 18, wherein the helical parameters include a pitch, a helix angle, and/or a helical direction.

24. The brush roll according to claim 18, wherein the first groove segment (1111) and the second groove segment (1112) have opposite spiral directions.

25. A roller body according to any one of claims 18-24, characterized in that the shape of the groove (111) extending into the first rib (12) is adapted to the shape of the first rib (12).

26. A roller brush body according to any one of claims 18-24, characterized in that the outer contour surface of the roller brush body comprises a first molding surface (114) and a second molding surface (115) which are axially aligned and connected, the junction of the first molding surface (114) and the second molding surface (115) forming a pinch line.

27. A roller brush body according to claim 26, characterized in that it comprises two lengths of said first moulding surface (114), said second moulding surface (115) being located between the two lengths of said first moulding surface (114) and being connected to the two lengths of said first moulding surface (114), respectively, said pinch line being formed at the connection of said second moulding surface (115) to each of said first moulding surfaces (114).

28. The roll brush body according to claim 27, wherein the pinch comprises a first line segment (112) extending spirally and a second line segment (113) extending in a circumferential direction of the cylinder (11), the first line segment (112) being parallel to a spiral direction of the groove (111), an end of the first line segment (112) being connected to the second line segment (113).

29. A roller brush body according to claim 28, wherein two of said first line segments (112) and two of said second line segments (113) are alternately connected to enclose said second moulding surface, said second moulding surface (115) being located laterally of said groove (111).

30. The brush roll body according to any one of claims 18-24, wherein the inner wall of the cylinder (11) is formed with a second rib (13) protruding inwardly of the cylinder (11) and extending spirally;

31. The rolling brush body according to claim 30, wherein the second protruding ridge (13) is disposed on the inner wall of the cylinder (11), and a blind reference hole capable of being processed into a bristle-planting hole is disposed on the outer wall of the cylinder (11) at a position corresponding to the second protruding ridge (13).

32. The rolling brush body according to claim 31, wherein a plurality of the blind reference holes are provided, and a plurality of the blind reference holes are arranged in a spiral direction of the second rib (13).

33. The roll brush body according to claim 32, wherein the outer wall of the cylinder (11) corresponding to the second rib (13) is recessed inside the second rib (13) to form a recess (117), and the recess (117) extends spirally around the axis of the cylinder (11).

34. The rolling brush body according to claim 33, wherein the opening of the recess (117) is gradually increased in a radial direction of the cylinder (11) toward an axial direction away from the cylinder (11).

35. The rolling brush body according to claim 30, wherein at least two first ribs (12) and at least two second ribs (13) are provided, the first ribs (12) and the second ribs (13) are alternately arranged and evenly spaced along the circumference of the barrel (11), and the groove (111) is provided on the outer wall of the barrel (11) at a position corresponding to each first rib (12).

36. A rolling brush body for installing a cleaning member (2) to form a rolling brush, the rolling brush body comprising a hollow cylinder (11), wherein a first rib (12) protruding towards the inside of the cylinder (11) and extending spirally is arranged on the inner wall of the cylinder (11), the cylinder (11) is recessed into the first rib (12) corresponding to the outer wall of the first rib (12) to form a spirally extending groove (111), the groove (111) is used for installing the cleaning member (2), the groove (111) has a first width and a second width arranged from inside to outside along the radial direction of the cylinder (11), and the first width is greater than the second width;

the rolling brush body is formed by injection molding, the outer contour surface of the rolling brush body comprises a first molding surface (114) and a second molding surface (115) which are connected, a clamping line is formed at the joint of the first molding surface (114) and the second molding surface (115), the second molding surface is used for keeping the rolling brush body in a clamped state in the molding process, the clamping line comprises a first line segment (112) extending in a spiral mode and a second line segment (113) extending in the circumferential direction of the cylinder body (11), and the first line segment (112) and the second line segment (113) are arranged in an included angle mode.

37. A roller brush body according to claim 36, characterized in that the groove (111) is an inverted T-shaped groove or a dovetail groove.

38. The rolling brush body according to claim 36, wherein the outer diameter of the cylinder (11) is 40mm to 60 mm.

39. The rolling brush body according to claim 36, wherein the wall thickness of the rolling brush body is 2mm to 4 mm.

40. The brush roll body according to claim 36, wherein the groove (111) comprises a first groove segment (1111) and a second groove segment (1112) in communication, the first groove segment (1111) and the second groove segment (1112) having different spiral parameters;

41. The rolling brush body of claim 40, wherein the helical parameters include a pitch, a helix angle, and/or a helical direction.

42. The brush roll body according to claim 40, wherein the first groove segment (1111) and the second groove segment (1112) have opposite spiral directions.

43. The brush roll body according to any of claims 36-42, characterized in that the recess (111) extends into the first rib (12) with a shape that is adapted to the shape of the first rib (12).

44. A roller brush body according to any one of claims 36-42, comprising two lengths of the first moulding surface (114), wherein the second moulding surface (115) is located between the two lengths of the first moulding surface (114) and is connected to the two lengths of the first moulding surface (114), respectively, and wherein the pinch line is formed at the connection of the second moulding surface (115) to each of the first moulding surfaces (114).

45. The rolling brush body according to claim 44, wherein the first line segment (112) is parallel to the spiral direction of the groove (111), and the end of the first line segment (112) is connected to the second line segment (113).

46. A roller brush body according to claim 44, characterized in that two first line segments (112) and two second line segments (113) are alternately connected to enclose the second forming surface, the second forming surface (115) being located at the side of the groove (111).

47. The roll brush body according to any of claims 36-42, characterized in that the inner wall of the cylinder body (11) is provided with a second rib (13) which protrudes inward of the cylinder body (11) and extends spirally;

48. The rolling brush body according to claim 47, wherein the second protruding ridge (13) is arranged on the inner wall of the cylinder (11), and a blind reference hole capable of being processed into a flocking hole is arranged on the outer wall of the cylinder (11) at a position corresponding to the second protruding ridge (13).

49. The rolling brush body according to claim 48, wherein a plurality of the blind reference holes are provided, and a plurality of the blind reference holes are arranged in a spiral direction of the second rib (13).

50. The roll brush body according to claim 48, wherein the outer wall of the cylinder (11) corresponding to the second rib (13) is recessed inside the second rib (13) to form a recess (117), and the recess (117) extends spirally around the axis of the cylinder (11).

51. The rolling brush body according to claim 50, wherein the opening of the recess (117) is gradually increased in a radial direction of the cylinder (11) toward an axial direction away from the cylinder (11).

52. The rolling brush body according to claim 47, wherein at least two first ribs (12) and at least two second ribs (13) are provided, the first ribs (12) and the second ribs (13) are alternately arranged and evenly spaced along the circumference of the barrel (11), and the groove (111) is provided on the outer wall of the barrel (11) at a position corresponding to each first rib (12).

53. A rolling brush body for mounting a cleaning piece (2) to form a rolling brush, characterized in that the rolling brush body comprises a hollow cylinder body (11), a first rib (12) which protrudes towards the inside of the cylinder body (11) and extends spirally is arranged on the inner wall of the cylinder body (11), a groove (111) which extends spirally is formed on the outer wall of the cylinder body (11) corresponding to the first rib (12) and is recessed inside the first rib (12), the groove (111) is used for mounting the cleaning piece (2), the groove (111) has a first width and a second width which are arranged from inside to outside along the radial direction of the cylinder body (11), and the first width is larger than the second width;

the round brush body adopts injection mold injection moulding, injection mold includes outer core (21) and wears to locate inner core (22) in outer core (21), inner core (22) with when outer core (21) is in the shaping position, form the molding chamber between it, be provided with the shaping on outer core (21) the recess shaping arris (2111) of recess (111), be provided with the shaping on inner core (22) the first bead shaping groove (2211) of first bead (12).

54. Rolling brush body according to claim 53, wherein said groove (111) is an inverted T-shaped groove or a dovetail groove.

55. The rolling brush body according to claim 53, wherein the outer diameter of the cylinder (11) is 40mm to 60 mm.

56. The rolling brush body according to claim 53, wherein the wall thickness of the rolling brush body is 2mm to 4 mm.

57. The brush roll body according to claim 53, wherein the groove (111) comprises a first groove segment (1111) and a second groove segment (1112) in communication, the first groove segment (1111) and the second groove segment (1112) having different spiral parameters;

58. The rolling brush body of claim 57, wherein the helical parameters include a pitch, a helix angle, and/or a helical direction.

59. The brush roll of claim 57, wherein the first groove segment (1111) and the second groove segment (1112) have opposite spiral directions.

60. Roll brush body according to any of claims 53-59, characterized in that the shape of the groove (111) extending into the first rib (12) is adapted to the shape of the first rib (12).

61. A roller brush body according to any one of claims 53-59, characterized in that the roller brush body is injection moulded, the outer contour surface of the roller brush body comprising a first moulding surface (114) and a second moulding surface (115) which are axially aligned and connected, the connection of the first moulding surface (114) and the second moulding surface (115) forming a pinch line.

62. A roller brush body according to claim 61, characterized in that it comprises two lengths of said first moulding surface (114), said second moulding surface (115) being located between the two lengths of said first moulding surface (114) and being connected to the two lengths of said first moulding surface (114), respectively, said pinch line being formed at the connection of said second moulding surface (115) to each of said first moulding surfaces (114).

63. The rolling brush body according to claim 62, wherein the clamping line comprises a first line segment (112) extending spirally and a second line segment (113) extending in a circumferential direction of the cylinder (11), the first line segment (112) being parallel to a spiral direction of the groove (111), an end of the first line segment (112) being connected to the second line segment (113).

64. A roller brush body according to claim 63, wherein two of said first line segments (112) and two of said second line segments (113) are alternately connected to enclose said second moulding surface, said second moulding surface (115) being located laterally of said groove (111).

65. The roll brush body according to any of claims 53-59, wherein the inner wall of the cylinder (11) is formed with a second rib (13) protruding inwardly of the cylinder (11) and spirally extending;

66. The roll brush body according to claim 65, wherein the second protruding ridge (13) is disposed on the inner wall of the cylinder (11), and a blind reference hole capable of being processed into a bristle-planting hole is disposed on the outer wall of the cylinder (11) at a position corresponding to the second protruding ridge (13).

67. The rolling brush body according to claim 66, wherein a plurality of the blind reference holes are provided, and a plurality of the blind reference holes are arranged along the spiral direction of the second convex rib (13).

68. The roll brush body according to claim 67, wherein the outer wall of the cylinder (11) corresponding to the second rib (13) is recessed inside the second rib (13) to form a recess (117), and the recess (117) extends spirally around the axis of the cylinder (11).

69. The rolling brush body according to claim 68, wherein the opening of the recess (117) gradually increases in a radial direction of the cylinder (11) toward an axial direction away from the cylinder (11).

70. The rolling brush body according to claim 65, wherein at least two first ribs (12) and at least two second ribs (13) are provided, the first ribs (12) and the second ribs (13) are alternately arranged and uniformly spaced along the circumference of the cylinder (11), and the groove (111) is provided on the outer wall of the cylinder (11) at a position corresponding to each first rib (12).

71. A roller brush, characterized in that it comprises a cleaning element (2) and a roller brush body according to any one of claims 1-70, the cleaning element (2) being snapped into the recess (111).

72. A dust extraction apparatus comprising a floor brush assembly, wherein the floor brush assembly comprises a housing and a roller brush according to claim 71, the roller brush being rotatably disposed within the housing.

73. A method for forming a rolling brush body, which is applied to an injection mold for manufacturing the rolling brush body according to any one of claims 1-70, wherein the rolling brush body is formed by injection molding with the injection mold, the injection mold comprises an outer core (21) and an inner core (22) penetrating into the outer core (21), a forming cavity is formed between the inner core (22) and the outer core (21) when the inner core and the outer core are in a forming position, a groove forming rib (2111) for forming the groove (111) is arranged on the outer core (21), and a first rib forming groove (2211) for forming the first rib (12) is arranged on the inner core (22);

the molding method comprises the following steps:

and a demolding step, wherein the groove forming ridge (2111) and the first rib forming groove (2211) are separated from the formed rolling brush body through spiral motion.

74. The method of claim 73, wherein the outer core (21) comprises a first outer core (211) and a second outer core, the second outer core comprises at least two clamping portions (212) arranged along the circumferential direction of the roller brush, the groove forming ribs (2111) are arranged on the inner wall of the first outer core (211), and the clamping portions (212) are spliced with the first outer core (211) to form the outer core (21) when the clamping portions (212) are in the forming position; when the roller brush body is formed in the forming cavity, at least two clamping parts (212) clamp the roller brush body;

the demolding step comprises:

a first outer core demolding step of spirally moving the first outer core (211) around an axis of the roll brush body to be detached from the roll brush body;

an inner core demolding step of spirally moving the inner core (22) around the axis of the roller brush body to be detached from the roller brush body;

and a second outer core demolding step, wherein at least two clamping parts (212) deviate from the rolling brush body along the radial direction of the rolling brush body so as to be separated from the rolling brush body.

75. The method of molding a roll brush body according to claim 74, wherein the outer core (21) comprises two first outer cores (211), and the clamping portions (212) are located between the two first outer cores (211) and are respectively joinable with the two first outer cores (211);

in the first outer core demoulding step, the two first outer cores (211) simultaneously perform spiral motion and respectively move towards two ends of the axis of the rolling brush body.

76. The method of forming a brush roll body according to claim 74, wherein the inner core (22) comprises two inner mandrels (221), the two inner mandrels (221) being axially splittable;

in the inner core demoulding step, the two inner mandrels (221) simultaneously perform spiral motion and respectively move towards two ends of the axis of the rolling brush body.

77. The method of forming a roll brush body according to claim 73, wherein the step of injection molding further comprises:

a clamping step, wherein the inner core (22) and the outer core (21) move to be in a forming position.

78. The method of forming a roll brush body according to claim 74, wherein the step of injection molding further comprises, prior to the step of injection molding: a mold closing step, wherein the mold closing step comprises:

at least two of the clamping portions (212) are close to each other until the clamping portions (212) move to the forming positions thereof;

the first outer core (211) moves spirally until the first outer core (211) is jointed with the clamping part (212) to form the outer core (21), and the inner core (22) moves spirally to be inserted into the outer core (21) until the molding cavity is formed.