CN111038753A

CN111038753A - Method and device for sleeving continuous net sleeve on object in segmented manner

Info

Publication number: CN111038753A
Application number: CN201811192709.0A
Authority: CN
Inventors: 吕汉明; 王家纯; 周鹏飞; 马崇启; 吕鑫
Original assignee: Tianjin Tongqi Technology Co ltd
Current assignee: Tianjin Tongqi Technology Co ltd
Priority date: 2018-10-13
Filing date: 2018-10-13
Publication date: 2020-04-21

Abstract

The invention relates to a technology for automatically segmenting and sleeving a coiled continuous net sleeve on an object needing a net sleeve, in particular to a method and a device for segmenting and sleeving the continuous net sleeve on the object; according to the method for sleeving the continuous net sleeve on the object in the segmented mode, the opening part is placed in the net sleeve with the upward opening in the plumb direction to stretch the net sleeve, the net sleeve which is stretched by the opening part is clamped by a holding hand to be lifted upwards to pull the net sleeve to a required length, the required length of the net sleeve is cut off by a cutter, the holding hand stretches the net sleeve to a size which can be sleeved on the sleeved net sleeve object and then moves to the position right above the sleeved net sleeve object, the holding hand holds the net sleeve to move downwards to sleeve the net sleeve on the outer side surface of the sleeved net sleeve object, and the device for sleeving the continuous net sleeve on the object in the segmented mode is used for sleeving the continuous net sleeve on the object in the segmented mode to segment and sleeve the continuous net sleeve on the object.

Description

Method and device for sleeving continuous net sleeve on object in segmented manner

Technical Field

The invention relates to a technology for automatically segmenting and sleeving a coiled continuous plastic net sleeve on an object needing the net sleeve, in particular to a method and a device for segmenting and sleeving the continuous net sleeve on the object; according to the method for sleeving the continuous net sleeve on the object in the segmented mode, the opening part is placed in the net sleeve with the upward opening in the plumb direction to stretch the net sleeve, the net sleeve which is stretched by the opening part is clamped by a holding hand to be lifted upwards to pull the net sleeve to a required length, the required length of the net sleeve is cut off by a cutter, the holding hand stretches the net sleeve to a size which can be sleeved on the sleeved net sleeve object and then moves to the position right above the sleeved net sleeve object, the holding hand holds the net sleeve to move downwards to sleeve the net sleeve on the outer side surface of the sleeved net sleeve object, and the device for sleeving the continuous net sleeve on the object in the segmented mode is used for sleeving the continuous net sleeve on the object in the segmented mode to segment and sleeve the continuous net sleeve on the object.

Background

The plastic net sleeves used for product packaging generally comprise two types, namely solid plastic net sleeves and foamed plastic net sleeves, a net sleeve is required to be sleeved outside a plurality of products to protect the products from being damaged in the carrying, transporting or storing process, such as cheese, apples, Hami melons, mechanical parts and the like, generally, the net sleeves are cut into sections in the production process, and then the sections of the net sleeves are manually sleeved outside the packaged products.

In view of the above circumstances, the present invention provides a method and a device for sleeving a continuous net sleeve on an object in sections, wherein a mouth opening device is used for opening the net sleeve and keeping the net sleeve in an opening state, a holding head is used for pulling out the opened net sleeve for a section and then cutting the opened net sleeve, and the holding head is used for sleeving the cut section of the net sleeve on the outer side of the object.

Disclosure of Invention

To overcome the defects of the prior art, the invention aims to solve the technical problem of a method and a device for sleeving a continuous net sleeve on an object in sections.

The invention solves the problem that the method for sleeving the continuous net sleeve on the object in sections comprises the following steps:

the continuous net cover reaches the position department of being strutted with it after a series of transport links, and the one section of the continuous net cover one end of position department of strutting that it needs is the plumbum state that the opening is ascending, its characterized in that: a port-opening part with the same axle wire with the net sleeve is arranged in the end of the net sleeve to be cut in the plumb direction, the port-opening part can open the net sleeve from a flat shape with two surfaces jointed into a circular or polygonal section by means of the self weight and the external shape and size change,

the holding part is arranged outside the net sleeve and adjacent to the mouth-opening part, the mouth-opening part is wrapped by the continuous net sleeve, the net sleeve is separated between the mouth-opening part and the holding part, the holding part can prevent the mouth-opening part from falling downwards along the direction of gravity borne by the mouth-opening part and continuing to move downwards after the net sleeve is pressed by the holding part, the mouth-opening part is always positioned inside the net sleeve when the net sleeve slides along the outer side of the mouth-opening part, and the mouth-opening part can continuously open the continuous net sleeve passing through the mouth-opening part,

gripping the net cover which is spread by the spreading part by using gripping heads which are symmetrically arranged in the circumferential direction, pulling out a section of net cover which is spread by the spreading part upwards, cutting off the net cover with the required length along the horizontal cross section of the net cover, spreading the net cover by using the gripping heads until the size of the inner side of the net cover is larger than the size of the maximum overlooked size of the object of the net cover, moving the net cover carried by the gripping heads to the position right above the object of the net cover to be sleeved, downwards moving the net cover to the height of the outer surface of the object, loosening the net cover by using the gripping heads, moving upwards, sleeving the net cover on the outer surface of the object of the net,

when the holding head holds the opening part of the expanded net sleeve, a small section of net sleeve at the top end of the opening part of the net sleeve or a net sleeve which is close to the whole section to be cut off can be held; if the holding head only holds a small section of net cover at the opening of the net cover, the holding head holds the net cover and turns over the net cover to the object of the quilt cover when the net cover moves downwards to cover the object of the quilt cover, the holding head loosens the net cover and then moves upwards, and the net cover is covered on the outer side of the object of the quilt cover net cover; if the holding head holds the net sleeve which is close to the whole cut off section, and a part of the holding head is arranged in the net sleeve, the holding head holds the net sleeve and moves downwards to the height of the outer surface of the object, and a pressing sleeve device is needed to press the net sleeve to prevent the net sleeve from moving upwards along with the holding head before the holding head loosens the net sleeve to move upwards, and the net sleeve is wrapped on the sleeved net sleeve object by the elasticity of the holding head after the holding head moves upwards.

The mouth supporting part at least comprises a frustum (a structure with a thick upper part and a thin lower part on the outer side) structure with the gradually increased horizontal section peripheral dimension from bottom to top, the frustum refers to a structure with the gradually increased horizontal section peripheral dimension along with the increase of the height, such as a variable section cylinder or a cylinder body like a cone frustum, a pyramid frustum and the like, the mouth supporting part is in the plumb bob direction and is downward corresponding to the thinner end of the cone frustum, the perimeter of the thicker end of the mouth supporting part is larger than or equal to (preferably larger than) the perimeter of an inner ring of the net cover in a natural state, and the holding part is positioned outside the mouth supporting part and in the height range of the cone frustum.

The plumb direction of the opening supporting part is in a combined shape of two or more sections, and the opening supporting part can also comprise a circle of finger-shaped section, cylindrical section or columnar section which is distributed along the edge of the end face of the frustum-shaped section besides the frustum-shaped section. For example, the length direction of the opening supporting part is a combined shape of two sections, wherein one section is in a frustum shape of which the external dimension of the section of the opening supporting part is gradually increased from bottom to top, and the other section is in a structure that a plumb bob extends out of one section upwards from the top edge of the thicker end of the frustum-shaped section; the length direction of the mouth supporting part is in a combined shape of three sections, wherein the bottommost section is in a frustum shape with the gradually enlarged section external size from bottom to top, the middle section is in a circular table shape with the gradually thickened section from bottom to top, and the topmost section is in a structure with a section extending upwards from a plumb bob at the edge of the top of the circular table shape.

The holding component and the opening-supporting component clamp the net cover at two positions at least at one horizontal height in the circumferential direction,

the holding head is at least two devices which are symmetrically distributed in the circumferential direction and can hold the expanded section of the net cover,

the sleeve pressing device is at least one pair of devices which can hold the net sleeves outside the sleeved net sleeve object and prevent the net sleeves from rising along with the rising of the holding head.

The invention solves the problem that the device for sleeving the continuous net sleeve on the object in sections comprises the following steps:

the device for sleeving the continuous net sleeve on the object in sections is designed, and is characterized in that the continuous net sleeve is sleeved on the object after being segmented by adopting the method for sleeving the continuous net sleeve on the object in sections, and the device comprises a rack, a port supporting part, a holding part, a sleeve taking device and a cutting device;

the opening supporting part at least comprises a frustum-shaped part which is arranged in the plumb direction and gradually expands the peripheral dimension of the horizontal section from bottom to top, the frustum is a cylinder or a barrel with variable sections, such as a circular truncated cone with a circular peripheral section, a polygonal truncated pyramid with a polygonal peripheral section or an elliptical truncated cone with an oval peripheral section, and the height direction of the frustum of the opening supporting part is in the plumb direction and the thinner end of the corresponding frustum faces downwards;

the holding component is a component which is arranged on the frame, supports the mouth-supporting component at the outer side of the mouth-supporting component, prevents the mouth-supporting component from falling to contact with the holding component and then continues to move downwards, and the holding component is contacted with the mouth-supporting component within the frustum-shaped height range;

the sleeve taking device comprises a sleeve taking device mounting platform, a sleeve taking moving part and a holding head, the sleeve taking moving part comprises a sleeve taking driving part and a sleeve taking guiding part, the sleeve taking guiding part is connected with the rack and the sleeve taking device mounting platform, the sleeve taking driving part drives the sleeve taking device mounting platform to move, the sleeve taking device mounting platform can move to the position where the symmetrical center plumb direction distributed by the holding head is aligned with the center of the opening propping device and the center of the sleeved net sleeve object,

the sleeve taking device is characterized in that at least one pair (two) of holding heads are symmetrically arranged on the mounting platform of the sleeve taking device along the circumferential direction, each holding head comprises a holding hand, a holding hand driving element and a holding hand guiding element, the holding hand driving elements drive the holding hands to move so as to hold or release the net sleeve, each holding head comprises two holding hands, the net sleeves are held or released through the relative movement of the two holding hands, the holding hands can hold the net sleeves oppositely at the inner side and the outer side of the net sleeve or can only hold the net sleeves from the inner side or the outer side of the net sleeve, each pair of holding heads has symmetrical movement freedom degrees approaching to and departing from each other in the connecting line direction, and at least two working positions respectively correspond to the position where the holding heads hold the net sleeves and the position where the net sleeves are sleeved on the sleeved net sleeve object, the distance between the two holding heads when the holding heads are at the position where the net sleeves are held is smaller than the distance when the holding heads are at the position where the net sleeves, the holding head can move to stretch the net sleeve to a size larger than the maximum size of the overlooking projection of the net sleeve object,

the cutting device comprises a cutting driving element, a cutting guide component and a cutter, wherein the cutter is an electrified resistance wire, a rotary disc cutter or a shear doing shearing movement and the like. The cutting driving element drives the resistance wire to move along the cutting guide element, and the net sleeve is cut in the horizontal direction or the direction close to the horizontal direction between the height positions which are higher than the top of the mouth supporting part and lower than the bottommost part of the raised sleeve taking device.

When the holding hands hold the net sleeves in the inner side and the outer side oppositely, the holding hand on each holding head is divided into an inner holding hand and an outer holding hand, and the distance between the two inner holding hands of the two holding heads is smaller than the distance between the two outer holding hands; the inner holding hand is at least provided with two working positions, namely an inner working position and an outer working position, when the two inner holding hands in the pair of holding heads are positioned at the inner working positions, the distance between the inner holding hands is smaller than the maximum size of the horizontal section of the opening part, when the two inner holding hands in each pair of holding heads are positioned at the outer working positions, the distance between the inner holding hands and the outer holding hands is larger than the maximum diameter direction size of the horizontal section of the object to be sheathed, when the inner holding hands have the 3 rd working position, the inner holding hands are called as the middle working position, wherein the working positions are positioned between the inner working positions and the outer working positions, and when the inner holding hands are positioned at the middle working positions, the distance between the inner working positions and the outer working positions is approximately equal; the outer holding hand has at least two working positions, when the outer holding hand is positioned at the inner working position, the outer holding hand can hold the net sleeve with the inner holding hand positioned at the inner working position or the middle working position, when the outer holding hand is positioned at the outer working position, the distance between the two outer holding hands is larger than the distance between the two inner holding hands positioned at the outer working position, and the distance between the outer holding hand and the inner holding hand positioned at the outer working position can not hold the net sleeve.

When the holding hand only holds the net sleeve at the inner side of the net sleeve, the holding hand is positioned at the same radius position in the circumferential direction of the distribution circumference of the holding heads, the holding hand has two working positions, namely an inner working position and an outer working position, in the radial direction of the distribution circumference of the holding heads, when the holding hand is positioned at the inner working position, the holding hand can move from the inside of the net sleeve to the outside of the net sleeve to hold the net sleeve on the mouth supporting part, and when the holding hand is positioned at the outer working position, the distance between the holding hands of the pair of holding heads is larger than the maximum size of the horizontal section of the object to be sleeved with the net sleeve.

When the holding hand only holds the net sleeve outside the net sleeve, the holding hand is located at the same radius position in the circumferential direction of the distribution of the holding heads, the holding hand has two working positions, namely an inner working position and an outer working position, in the radial direction of the distribution circumference of the holding heads, when the holding hand is located at the inner working position, the holding hand can move from the outside of the net sleeve to the inside of the net sleeve to hold the net sleeve on the mouth supporting part, and when the holding hand is located at the outer working position, the distance between the holding hands of the pair of holding heads is larger than the maximum size of the horizontal section of the net sleeve object.

The length direction of the mouth supporting part is in a combined shape of two sections, wherein one section is in a frustum shape with the gradually enlarged external dimension of the section, and the other section is in a cylinder or finger-shaped structure which extends upwards from a top plumb at the thicker end of the frustum-shaped section; the length direction of the mouth supporting part is in a combined shape of three sections, wherein the lowest section is in a frustum shape, the external dimension of the section of the lowest section is gradually increased from bottom to top, the middle section is in a frustum shape, the section of the middle section is gradually thickened from bottom to top, and the uppermost section is in a structure that a plumb bob of the top edge of the frustum shape extends upwards.

The holding member is in two-stage contact with the mouth-piece in at least one horizontal level plane.

The coefficient of friction between the material of the mouthpiece surface and the mesh should be as low as possible.

By means of the mechanism, the working process of the device for sleeving the continuous net sleeve on the object in a segmented mode is as follows:

after passing through a guide roller, the head end of a continuous net sleeve is opened upwards in a plumb direction, the opening of the net sleeve penetrates through the opening supporting part and the holding part from bottom to top, the opening end part of the net sleeve is upwards exposed out of the top end of the opening supporting part, the opening supporting part is positioned in the net sleeve, the opening supporting part is wrapped by the net sleeve, the net sleeve is clamped between the opening supporting part and the holding part, the end part of the net sleeve is supported by the opening supporting part, a lifting driving part of the sleeve taking device drives the sleeve taking device to ascend to the height that the lowest part of the sleeve is higher than the opening of the net sleeve, a horizontal driving part of the sleeve taking device drives the sleeve taking device to horizontally move to be aligned with the opening supporting part (the opening of the net sleeve), and the lifting driving part of the sleeve taking device drives the sleeve taking device to descend to; when the holding hands hold the net sleeve in the inner side and the outer side of the net sleeve oppositely, the inner holding hand is positioned at the inner side of the net sleeve, the outer holding hand is positioned at the outer side of the net sleeve, and the holding hand driving element drives the inner holding hand and the outer holding hand to hold the net sleeve in an opposite direction; when the holding hand holds the net sleeve outside or inside the net sleeve, the holding hand is positioned outside or inside the net sleeve, and the holding hand holds the net sleeve from outside to inside or from inside to outside; the lifting driving part of the sleeve taking device drives the sleeve taking device to ascend to a position where the lowest part of the sleeve taking device is higher than the highest position of the mouth opening part by a distance, the cutting driving element of the cutting device drives the cutter to cut off the net sleeve between the top of the mouth opening part and the bottom of the sleeve taking device, the horizontal driving part of the sleeve taking device drives the sleeve taking device to horizontally move to be aligned with the top of the sleeved net sleeve object, and the lifting driving part of the sleeve taking device drives the sleeve taking device to descend to a height where the net sleeve carried by the sleeve taking device is sleeved on the sleeved net sleeve object. When the holding hand holds the opening part of the expanded net sleeve, the holding hand can hold a small section of net sleeve of the opening part of the net sleeve or hold a net sleeve which is close to the whole section and is to be cut; if the holding hand only holds a small section of the net sleeve at the opening of the net sleeve, the sleeve taking device drives the net sleeve to move downwards to sleeve the net sleeve on the object to be sleeved, the net sleeve is turned over and sleeved on the object, the sleeve taking device holds the hand to release the net sleeve and then moves upwards, and the net sleeve is sleeved on the outer surface of the object; if the holding hand holds the net cover which is close to the whole section of the net cover to be cut off at the outer side of the net cover, the sleeve taking device holds the net cover and then moves upwards after the net cover is loosened by the holding hand, and the net cover is sleeved on the outer surface of an object and sleeved on the object; if the holding hand holds the net sleeve which is close to the whole cut off section and the holding hand is arranged in the net sleeve, the sleeve taking device drives the net sleeve to move downwards to the height of the net sleeve sleeved on the quilt cover object, the sleeve pressing device is needed to press the net sleeve to prevent the net sleeve from moving upwards along with the sleeve taking device, the sleeve taking device moves upwards, and the net sleeve is directly shrunk and wrapped on the surface of the outer side of the object in a spreading state. The pressing device comprises pressing heads, pressing head guide elements and pressing head driving elements, the pressing head driving elements press the net sleeves positioned on the outer sides of the sleeved net sleeve objects at the height positions of the net sleeves sleeved to the surfaces of the sleeved net sleeve objects, the pressing heads are at least two and are arranged symmetrically relative to the centers of the sleeved net sleeve objects, and the pressing heads press the net sleeves on the outer side surfaces of the sleeved net sleeve objects or press the lower ends of the net sleeves on the bearing surfaces for placing the sleeved net sleeve objects on the outer sides of the expanded net sleeves.

After the device is applied, the continuous net sleeve can be segmented, and the segmented net sleeve is sleeved on the outer side of an object, so that the automation of the net sleeve is convenient to realize.

Drawings

Fig. 1 is a schematic structural view of a combined opening-supporting member for a method and apparatus for inserting a continuous web onto an object in sections according to the present invention.

Fig. 2 is a schematic view of a retaining member for a method and apparatus for applying a continuous web segment to an object in accordance with the present invention.

Fig. 3 is a schematic front view of a partial structure of a sleeve removing device, which is a method and a device for sleeving a continuous net sleeve on an object in sections according to the present invention.

Fig. 4 is a schematic bottom view of a portion of the structural principles of a method and apparatus for applying a continuous web segment to an object, and an extractor apparatus, in accordance with the present invention.

Fig. 5 is a schematic front view of an embodiment 1 of the method and apparatus for applying a continuous web segment to an object in accordance with the present invention.

Fig. 6 is a schematic left side view of an embodiment 1 of the method and apparatus for applying a continuous web segment to an object according to the present invention.

Fig. 7 is a schematic top view of an embodiment 1 of the method and apparatus for applying a continuous web segment to an object according to the present invention.

Fig. 8 is a schematic structural view of a frustum cone shaped mouth-opening part of the method and apparatus for sleeving a continuous net sleeve on an object in sections according to the present invention.

Fig. 9 is a schematic view of a frustum-shaped opening part of the method and apparatus for applying a continuous web to an object in sections according to the present invention.

Fig. 10 is a top view of a circular arc shaped holding hand for a method and apparatus for applying a continuous web onto an object in sections in accordance with the present invention, shown schematically as fig. 1.

Fig. 11 is a top view of a circular arc shaped holding hand for a method and apparatus for applying a continuous web onto an object in sections according to the present invention, as shown in fig. 2.

Fig. 12 is a schematic view of another opening-holding member and hand for use in the method and apparatus for applying a continuous web to an object in sections in accordance with the present invention.

Fig. 13 is a schematic view of a further embodiment of a mouth-opening member of the method and apparatus for applying a continuous web segment to an object.

Fig. 14 is a schematic view of a holding hand for holding the continuous web from the outside according to the method and apparatus for applying the continuous web to an object in sections.

Fig. 15 is a schematic view of the swinging position of the holding hand in the method and apparatus for applying a continuous web onto an object in sections in accordance with the present invention.

Fig. 16 is a schematic view of an alternative gripping hand configuration of the method and apparatus for applying a continuous web segment to an object in accordance with the present invention.

Fig. 17 is a schematic view of an alternative gripping hand configuration for a method and apparatus for applying a continuous web segment to an object in accordance with the present invention.

Fig. 18 is a schematic partial structural view of another alternative apparatus for applying a continuous web segment to an object in accordance with the present invention.

In the figure: 10. conical section 11 of combined opening-supporting component, finger-shaped flat section 110 of combined opening-supporting component, rod-shaped flat section 2 of opening-supporting component and holding component

3. The device 30, the device mounting platform 301, the device mounting platform connecting plate 31, the lifting drive member 320, the lifting guide rail 321, the lifting slider 33, the horizontal drive member 340, the horizontal guide rail 341, the horizontal slider 35, the inner gripping hand 351, the inner gripping hand guide slider 352, the inner gripping hand first drive cylinder 353, the inner gripping hand second drive cylinder 354, the vertical inner gripping hand guide slider 355, the vertical inner gripping hand first drive cylinder 356, the vertical inner gripping hand second drive cylinder 357, the inner gripping hand upper guide pulley 358, the inner gripping hand lower guide pulley 359, the inner gripping hand outer guide pulley 36, the outer gripping hand guide slider 361, the outer gripping hand drive member 362, the vertical outer gripping hand guide slider 390, the vertical outer gripping hand drive member 365, the outer gripping hand drive link 366, the fisheye bearing 37, the rotating gripping hand 380, the fixed gripping hand 381, the swinging hand 382, the swinging gripping hand link 39, the vertical gripping hand guide rail 390, the vertical outer gripping hand drive member 364, the outer gripping hand drive member 365, the outer gripping hand drive link 366 Rail 391, inside grip handle pull cord section 392, upper pulley mounting plate 393, upper bearing mounting plate

40. Cutting driving element 41, cutting guide rail 42, cutting slide 43, cutting frame 44, resistance wire

50. Pressing sleeve device 51, transmission belt 52, net sleeve object 9, frame 91, net sleeve 92, guide roller

Detailed Description

The following description of a specific embodiment of a method and apparatus for applying a continuous web segment to an object in accordance with the present invention is given by way of illustration only and not by way of limitation of the claimed invention, as no description of the prior art applies.

Example 1 of a method of applying a continuous web segment to an object according to the present invention (as shown in fig. 1-7):

the continuous net sleeve 91 reaches the position where the continuous net sleeve is unfolded after passing through the guide roller 92, the net sleeve is in a plumb bob state with an upward opening at the position where the continuous net sleeve needs to be unfolded, an opening unfolding part is arranged in the end, to be unfolded, of the net sleeve in the plumb bob direction,

the mouth bracing part is formed by combining a conical section 10 of a combined mouth bracing part and a finger-shaped straight section 11 of the combined mouth bracing part, the conical section 10 of the combined mouth bracing part is of a hexagonal frustum (the pyramid frustum with other polygonal horizontal sections are not excluded) structure, the finger-shaped straight section 11 of the combined mouth bracing part is 6 finger-shaped parts which extend upwards from a plumb at the vertex of the edge of the top end surface of the conical section 10 of the combined mouth bracing part and are symmetrically distributed circumferentially, the thinner end and the thicker end of the conical section 10 of the combined mouth bracing part are arranged in the net sleeve 91 in the direction of the upper plumb, the mouth bracing part props the continuous net sleeve 91 from flat shapes which are jointed on two sides into a polygon with the cross section by depending on the weight and the size of the mouth bracing part, and the net sleeve extends upwards to a point at the top of the finger-shaped straight section 11 of the mouth bracing part,

the net sleeve 91 is provided with a holding part 2 adjacent to the mouth-opening part, the holding part 2 is a hexagonal annular structural part which can prevent the mouth-opening part from falling downwards along the direction of gravity borne by the mouth-opening part and continuing to move downwards after the net sleeve is pressed by the holding part 2, the mouth-opening part is wrapped by the continuous net sleeve 91, the net sleeve is clamped between the mouth-opening part and the holding part 2, the mouth-opening part is always positioned in the net sleeve when the net sleeve 91 slides along the outer side of the mouth-opening part, when the net sleeve is lifted upwards, the mouth-opening part sustainably props open the continuous net sleeve passing through the mouth-opening part,

the method comprises the steps of holding the net sleeve which is expanded on a finger-shaped straight section 11 of a combined opening supporting part by using a sleeve taking device 3 which is provided with 3 pairs (6) of holding heads which are symmetrically distributed in the circumferential direction, oppositely on the inner side and the outer side of the net sleeve, holding the whole section of the net sleeve which needs to be cut off in the opposite direction of the two finger-shaped or rod-shaped holding hands in the direction of a plumb bob when the net sleeve is held by the holding heads, cutting the net sleeve along the horizontal cross section of the net sleeve by using an electrified resistance wire after the net sleeve is held by the sleeve taking device and pulled out upwards by a required length, wherein the cutting position is higher than the finger-shaped straight section 11 of the combined opening supporting part and lower than the lowest position of the holding heads,

the gripping head of the sleeve taking device 3 stretches the net sleeve to the inner side of the net sleeve with the size larger than the maximum size of the overlooked maximum encircling circle of the net sleeve object 52, the sleeve taking device 3 moves to the position right above the net sleeve object 52 to be sleeved and then moves downwards to the height of sleeving the net sleeve on the object 52, the pressing device presses the net sleeve on the surface of the sleeved net sleeve object on the outer side of the stretched net sleeve, the sleeve taking device 3 drives the gripping head to move upwards, the net sleeve is left at the height of the sleeved net sleeve object and is shrunk and sleeved on the outer surface of the object, the pressing device releases the net sleeve, the sleeve taking device grips a new net sleeve again, and one action cycle is completed.

In this embodiment, the holding member is a hexagonal ring-shaped structure, and the holding member and the mouth-supporting member are in contact at all positions in the circumferential direction without a mesh between the holding member and the mouth-supporting member, but it is not excluded to use a holding member that partially supports the mouth-supporting member, for example, a V-shaped member is used as the holding member to support the mouth-supporting member only at two diagonal vertexes, 3 vertexes, and four vertexes, or three straight rods are used as the holding member to support the mouth-supporting member in 3 directions, the height of the holding member is within the range of the height of the tapered surface of the mouth-supporting member, and in order to reduce the inclination of the mouth-supporting member in the holding member, the mouth-supporting member is supported in the tapered surface section of the mouth-supporting member by two layers of holding members, or a plate that can be in surface contact with the side surface of the tapered surface of the mouth-supporting member is used as the holding member at least two diagonal positions, at the outer periphery of the mouth-supporting member, Or three or even more positions holding the holding member.

The sleeve pressing device 50 is a pair of pressing heads which are symmetrically arranged along the axis of the sleeved object 52 on the outer side of the sleeved object 52 and are close to and far from the outer surface of the sleeved object 52, and is used for pressing the net on the outer side of the sleeved object 52. It is of course not excluded to press the net against the object carrying the object 52 of the net or any other means which would prevent the net from moving upwards with the holding head.

Embodiment 2 of the method for inserting a continuous web onto an object in sections according to the invention: (as shown in FIGS. 2-11)

In contrast to example 1, which is a method for applying a continuous web segment to an object, the following procedure is carried out:

in this embodiment, the circular truncated cone-shaped mouth-stretching component shown in fig. 8 is used, the corresponding holding component is a circular ring structural component, the net sleeve extends upwards to extend out of the top of the circular truncated cone-shaped mouth-stretching component by a small distance (10-40 mm) which can be held, the holding head uses a pair (2) of arc-shaped holding hands which are distributed diagonally and shown in fig. 10 to hold a small section of net sleeve which exceeds the top end of the mouth-stretching component, one arc-shaped holding hand can hold a larger section of net sleeve in the circumferential direction and can stretch out the net sleeve, and certainly, two pairs of arc-shaped holding hands which are distributed diagonally and shown in fig. 11 can be used (of course, straight or other shapes and other numbers of holding hands are not excluded). After holding the net sleeve, the holding hand of the sleeve taking device ascends, cuts off the net sleeve, moves to the position aligned with the object 52 of the sleeved net sleeve and descends to the height of the object 52 of the sleeved net sleeve like the embodiment 1, the net sleeve is gradually turned over to the outer side of the object from top to bottom in the process that the sleeve taking device 3 drives the net sleeve to move downwards, and after releasing the net sleeve, the holding hand moves upwards to the height higher than the object of the sleeved net sleeve, the new net sleeve is continuously taken out, and a working cycle is completed.

Embodiment 3 of the method for inserting a continuous web onto an object in sections according to the invention: (as shown in FIGS. 9 and 14)

In the embodiment, the mouth-opening part is a frustum-pyramid-shaped variable-section cylinder body in fig. 9, the thinner end of the mouth-opening part faces downwards, and rod-shaped straight sections 110 (shown in fig. 14) of 6 rod-shaped mouth-opening parts extend upwards and are uniformly distributed on the outer edge of the top end.

The holding hand in this embodiment holds the net only outside the net with the holding hand shown in fig. 14. The 12 holding hands and the 6 holding heads are located at the same radius position in the distribution circumference direction, two holding hands in each holding head hold the net sleeve by rotating the holding hands close to each other, the holding hands have two working positions in the radius direction of the distribution circumference of the holding heads, namely an inner working position and an outer working position, when the holding hands are located at the inner working position (the position in fig. 14), the holding hands can rotate to press the net sleeve on the outer side of the rod-shaped straight section 110 of the rod-shaped opening supporting part to the inner side of the rod-shaped straight section to hold the net sleeve, when the holding hands hold the net sleeve, the rod-shaped straight section 110 of the rod-shaped opening supporting part is surrounded by the net sleeve held by the holding hands, and when the holding hands move to the outer working position along the radius direction of the distribution circumference of the holding hands, the space between the holding hands of each pair of holding heads is larger than the maximum size of the horizontal section of the net.

When the sleeve taking device 3 drives the holding heads to move downwards to take the net sleeves, the holding hand in each holding head is in a state of loosening the net sleeves (shown in fig. 14) and the holding head is located at the outer working position of the holding head, the sleeve taking device 3 drives the holding heads to move downwards to the height of the net sleeves to be taken, the holding heads move to the inner working positions of the holding heads, after the two holding hands in each holding head rotate oppositely to hold the net sleeves, the sleeve taking device 3 drives the holding heads to move upwards and then horizontally move to the position right above the net sleeve objects 52 to be sleeved, the sleeve taking device 3 drives the holding heads to move downwards to the height position of the net sleeves to the net sleeve objects 52 to be sleeved, the holding hands rotate oppositely to loosen the net sleeves, and the net sleeves are sleeved on the net sleeve objects by the elasticity of the net sleeves.

Embodiment 4 of the method for inserting a continuous web onto an object in sections according to the invention: (as shown in FIG. 15)

This embodiment differs from embodiment 1 of the method of applying a continuous web segment to an object in that: as shown in fig. 15, the inner holding hand 35 adopts the driving scheme of the holding hand shown in fig. 15, the inner holding hand 35 is swung between its inner working position and its middle working position, when the inner holding hand 35 swings to the inclined position shown in fig. 15, the inner holding hand is the inner working position, at this time, the inner holding hand in each pair of chucks is closer in distance, so as to enter the inside of the net sleeve, when the inner holding hand swings to the plumb state, the inner holding hand is the middle working position, so as to be close to the inner side of the net sleeve which is opened by the opening part, and when the outer holding hand 36 holds the net sleeve together, the net sleeve deforms and stretches less in the top view direction, so as to be convenient for lifting the net sleeve.

Embodiment 1 of an apparatus for applying a continuous web segment to an object according to the present invention (as shown in fig. 1-7):

a device for sleeving a continuous net sleeve on an object in sections comprises a frame 9, a mouth opening part, a holding part 2, a sleeve taking device 3, a cutting device and a sleeve pressing device 50; the frame 9 is a component of a frame-like structure;

the mouth supporting part is a part which is formed by combining a section of conical section 10 of a combined mouth supporting part and a finger-shaped straight section 11 of the combined mouth supporting part, the conical section 10 of the combined mouth supporting part is a hexagonal frustum, other variable cross-section shapes such as a conical frustum, an elliptical frustum and the like are certainly not excluded, the thinner end of the conical section 10 of the combined mouth supporting part is placed downwards, the thicker section is placed upwards in the plumb direction, the finger-shaped straight section 11 of the combined mouth supporting part is formed by finger-shaped parts which are upwards extended by 6 (other quantities are not excluded) of plumbs uniformly distributed on the edge of the top end face of the conical section 10 of the combined mouth supporting part, the finger-shaped parts are welded on the conical section 10 of the combined mouth supporting part in an n-shaped mode by a circular optical axis, and other shapes such as a long strip plate, a long strip rod and the like are certainly not excluded;

the holding part 2 is a hexagonal ring-shaped part installed on the rack, the corners of the pyramid table section of the opening supporting part are diagonally located on the holding part 2, the holding part 2 supports the opening supporting part to prevent the opening supporting part from falling to be in contact with the holding part 2 and then continuing to move downwards, the holding part 2 and the opening supporting part are in angle-to-angle contact within the frustum-shaped height range, the opening supporting part is prevented from rotating along the axis of the opening supporting part, and the interference of a holding head and the finger-shaped straight section 11 of the combined opening supporting part when the holding head holds the net sleeve is avoided. 3 (or more than 3) inclined plates which are attached to the side face of the frustum pyramid in parallel can be used as the holding part for supporting the opening supporting part, and 2-6V-shaped parts can be used for dragging the edges and corners of the holding part, in a word, the holding part plays a role in supporting the opening supporting part and preventing the opening supporting part from rotating around the center line of the plumb bob.

The sleeve taking device 3 comprises a sleeve taking device mounting platform 30, a sleeve taking moving part and a holding head,

the above-mentioned mounting platform 30 is a plate-like member with symmetrical axis, but it is not limited to be a plate-like member, and it may be a frame structure member,

the sleeve taking moving part comprises a lifting driving part and a horizontal driving part, the lifting driving part comprises a lifting driving element 31 (in the embodiment, an air cylinder arranged on a rack is adopted, driving elements such as a linear motor and a motor screw rod are not excluded) and a lifting guide part (comprising a lifting guide rail 320 and a lifting slide block 321), the horizontal driving part comprises a horizontal driving element 33 (an air cylinder arranged on the lifting slide block 321 is not excluded, driving elements such as a linear motor and a motor screw rod are not excluded) and a horizontal guide part (comprising a horizontal guide rail 340 and a horizontal slide block 341), the sleeve taking device mounting platform 30 is arranged on the horizontal slide block 341 through a sleeve taking device mounting platform connecting plate 301, the horizontal guide rail 340 matched with the horizontal slide block 341 is arranged on the lifting slide block 321, the lifting guide rail 320 matched with the lifting slide block 321 is arranged on the rack 9, and the lifting driving element 31 and the horizontal driving element 33 respectively drive the sleeve taking device mounting platform 30 to And a translational movement, thereby effecting movement of the extracting means 3. It is of course not excluded to use a multi-axis kinematic mechanism of an industrial robot structure to drive the movement of the extracting means 3, in which case the driving means of the extracting moving means are generally closed-loop controlled (servo or stepping) motors, and the guiding means of the extracting moving means are generally bearings.

3 pairs (6) of symmetrical holding heads are uniformly distributed on the sleeve taking device mounting platform 30 along the circumferential direction, each pair of holding heads comprises 4 holding hands which are respectively an inner holding hand 35 with a short distance and an outer holding hand 36 with a long distance in a pair of holding hands, the 4 holding hands in each pair of holding heads move along the connecting line direction of the pair of holding heads, the inner holding hand 35 is mounted on an inner holding hand guide slide block 351, the outer holding hand 36 is mounted on an outer holding hand guide slide block 361, the inner holding hand guide slide block 351 and the outer holding hand guide slide block 361 move along a holding hand guide rail 39, an inner holding hand second driving cylinder mounted on the sleeve taking device mounting platform 30 and an inner holding hand first driving cylinder 352 mounted on an air lever of an inner holding hand second driving cylinder 353 are connected in series to drive the inner holding hand guide slide block 351 to generate two-stage movement, and an outer holding hand driving element 362 (an air cylinder in the embodiment) mounted on the sleeve taking device mounting platform 30 drives the outer holding hand guide slide block 353 to drive the outer holding head to move in two To move towards the slider 361 and,

the cutting device comprises a cutting driving element 40 (in the embodiment, an air cylinder), a cutting guide part (comprising a cutting guide rail 41 arranged on the frame 9 and a cutting slide block 42 moving on the cutting guide rail 41) and a cutter, wherein the cutter is a resistance wire supported and arranged on the cutting slide block 42 through a cutting frame 43, the cutting device cuts the mesh sleeve by using the resistance wire which moves horizontally and is electrified, but the adoption of a rotary disc cutter or scissors which do shearing movement and the like as the cutter is not excluded. The cutting device cuts the netting horizontally at a height above the top of the mouth-piece below the lowest part of the raised extractor 3. Generally, the mesh sleeve notch cannot be obviously inclined when the cutter horizontally cuts the mesh sleeve, but if the opening supporting part is heavy and the friction force between the opening supporting part and the mesh sleeve is large, the pulling force of the plumbum direction of the mesh sleeve is large when the mesh sleeve is cut, if the cutter horizontally cuts the mesh sleeve, the notch and the axis of the mesh sleeve are possibly not perpendicular, in order to reduce the inclination, the cutter can cut the mesh sleeve along the inclined direction which forms a small angle with the horizontal direction when the cutter horizontally cuts the mesh sleeve, only the cutting guide rail 41 of the cutting device needs to be inclined by a small angle when the cutting guide rail is installed on a frame, and the angle can be adjusted by debugging and is generally between 0 and 10 degrees.

The sleeve pressing device 50 is a pair of (2-3 or even more than 2 pairs of) pressing heads which are arranged at the outer side of the sleeved net object 52 and have the freedom degrees close to and far away from the outer surface of the sleeved net object, and comprises a pressing head, a pressing head guide element and a pressing head driving element, wherein the pressing head can use a (double-rod) cylinder, a motor screw rod and the like as the driving element, a guide element such as a light shaft slide block or a linear guide rail and the like as the linear guide element, and can also use a bearing as the rotary guide element through transmission such as a connecting rod mechanism and the like, and the mechanisms are common knowledge, and the pressing head driving element of the sleeve pressing device drives the pressing head to press the net sleeve on the outer surface of the sleeved net object at the outer side of the sleeved net.

The inner holding hand 35 of the holding head of the sleeve taking device 3 is provided with 3 working positions, namely an inner working position, a middle working position and an outer working position; when the first driving cylinder 352 of the inner holding hand and the second driving cylinder 353 of the inner holding hand are both in a retraction state, two inner holding hands 35 in the pair of holding heads are in inner working positions, the distance between the two inner holding hands 35 is smaller than the maximum size of the horizontal section of the mouth-opening part, so that the inner holding hands 35 of the sleeve taking device can conveniently enter the inner side of the mouth-opening part to hold the net sleeve; when the first driving cylinder 352 of the inner holding hand and the second driving cylinder 353 of the inner holding hand are both in an extending state, two inner holding hands 35 in the pair of holding heads are in an outer working position, and the distance between the two inner holding hands is larger than the maximum diameter of the horizontal section of the object to be sheathed with the net sleeve, so that the net sleeve held by the holding hands can be conveniently sheathed on the object to be sheathed with the net sleeve; when the first driving cylinder 352 of the inner holding hand is in an extending state and the second driving cylinder 353 of the inner holding hand is in a retracting state, the inner holding hand 35 is in a middle working position, the middle working position of the inner holding hand 35 is between the inner working position and the outer working position, and when the middle working position is in a 3 rd working position, the distance between the middle working position and the inner holding hand is approximately equal to or slightly larger than the maximum size of the horizontal section of the mouth-opening part, so that the outer holding hand 36 and the inner holding hand 35 can be attached together to hold the net sleeve, and at the moment, the enclosing angle of the net sleeve on the inner holding hand 35, the outer holding hand 36 and the finger-shaped straight section 11 of the combined mouth-opening part is small, the friction force between the net sleeve and the finger-shaped straight section 11 is small, and the net sleeve.

The outer gripping hand 36 has two working positions, which are inner working positions when the cylinder rod of the outer gripping hand driving element 362 cylinder is retracted, the outer gripping hand 36 can grip the net cover with the inner gripping head 35 in the middle working position; when the cylinder rod of the cylinder of the outer holding hand driving element 362 extends, the outer holding hand driving element is located at the outer working position, the distance between the two outer holding hands 36 is larger than the distance between the two inner holding hands 35 at the outer working position, and a certain distance is kept between the outer holding hands and the inner holding hands 35 at the outer working position, so that the net cover is conveniently kept on the sleeved net cover object when the sleeve taking device 3 is lifted.

The height of the holding hand in the plumb direction is greater than that of the meshed object 52, and the whole section of the meshed sleeve needing to be sleeved on the object can be held in the plumb direction. The gripping hand and the finger-shaped straight section 11 of the combined opening-supporting part are mutually staggered in the circumferential direction.

the opening of one end of the net sleeve in the direction of a plumb bob upwards surrounds the opening-supporting part and penetrates through the opening-supporting part from the outer side of the opening-supporting part and the inner side of the holding part, the opening of the net sleeve is enabled to exceed the top end of the holding part a little, the sleeve-taking device 3 is moved to the right above the opening-supporting part, the inner holding hand 35 is moved to the inner working position, the outer holding hand 36 is moved to the outer working position, the sleeve-taking device 3 is lowered to the height that the inner holding hand 35 and the outer holding hand 36 can hold the net sleeve with the required length, at the moment, the inner holding hand 35 is arranged in the net sleeve, the outer holding hand 36 is arranged outside the net sleeve, the outer holding hand is moved to the inner working position and holds the net sleeve together with the inner holding hand 35, the holding heads and the finger-shaped parts of the finger-shaped straight, when the outer holding head holds the net sleeve, the outer holding head interferes with the finger-shaped parts of the finger-shaped straight sections 11 of the combined opening supporting parts; the sleeve taking device 3 is lifted to pull the held net sleeve upwards from the outer side of the opening supporting part to a required net sleeve length, the opening supporting part slides downwards in the net sleeve to a height position clamping the net sleeve with the holding part 2 by the gravity of the opening supporting part in the net sleeve, the cutting driving element 40 drives the electrified resistance wire 44 to horizontally cut the net sleeve between the lower part of the holding hand and the upper part of the opening supporting part, the outer holding hand 36 moves to the outer working position, the inner holding hand 35 moves to the outer working position, the net sleeve is further expanded to a size capable of being sleeved on a net sleeve object, a certain distance is kept between the outer holding hand 36 and the inner holding hand 35, the height of the sleeve taking device 3 is ensured to ensure that the sleeve taking device 3 does not interfere with other parts or objects when the sleeve taking device 3 moves to the position right above the sleeved net sleeve object horizontally, and the sleeve taking device 3 moves to the sleeved net sleeve object (the sleeved net sleeve object 52 is a conical lower yarn bobbin placed on a conveyor belt and is drawn in fig. 6 and 7) When the net sleeve is lowered to the height (the height that the lower end of the holding hand reaches the conveyor belt) that the net sleeve held by the holding head can be sleeved on the sleeved net sleeve object 52, the sleeve pressing device 50 presses the net sleeve on the outer side surface of the sleeved net sleeve object, and the sleeve taking device 3 is lifted upwards and then moves to the position right above the opening supporting part to continue taking off one net sleeve.

If the lower edge of the net cover is lower than the bottom surface of the object to be sleeved when the net cover is sleeved on the object to be sleeved with the net cover 52, a device for jacking the net cover can be arranged below the object to be sleeved with the net cover 52 to jack the object to be sleeved with the net cover to a certain height, and the length of the net cover held by a holding hand is longer, so that the net cover can be sleeved on the object to be sleeved with the net cover 52 and then a section of inward-folded net cover is arranged at the top end and the bottom end of the object to be sleeved with the net cover 52 to protect two end parts of the object to be sleeved with the net cover 52.

As can be seen from fig. 5 and 7, 3 sleeve taking devices 3 can be mounted on the connecting plate 301 of the sleeve taking device mounting platform, and similarly, 3 opening supporting parts, 3 holding

parts

2 and 3 sleeve pressing devices 50 can also be mounted at corresponding positions of the frame, so that 3 sections of the net sleeves can be cut at one time and sleeved on 3 sleeved net sleeve objects.

Embodiment 2 of an apparatus for applying a continuous web segment to an object according to the present invention (as shown in fig. 1-11):

this embodiment differs from embodiment 1 of the apparatus for applying a continuous web segment to an object in that: the sleeve pressing device is cancelled. The outer holding hand 36 has three working positions, and a primary cylinder is connected in series on the outer holding hand driving element 362, so that the outer holding hand is added with a middle working position, and when the outer holding hand 36 is positioned at the inner working position, the outer holding hand 36 and the inner holding head 35 positioned at the middle working position can hold the net sleeve; when the outer holding hands 36 are positioned at the outer working position, the distance between the two outer holding hands 36 is larger than the distance between the two inner holding hands 35 when positioned at the outer working position, and a certain distance is kept between the two outer holding hands 36 and the inner holding hands 35 when positioned at the outer working position, so that the net cover is kept on the net cover object to be sleeved when the sleeve taking device 3 is lifted; when the outer holding hand 36 is in the middle working position, the outer holding hand 36 and the inner holding hand 35 in the outer working position can still hold the net.

In the working process, the sleeve taking device 3 moves to the position right above the opening supporting part, the inner holding hand 35 moves to the inner working position, the outer holding hand 36 moves to the outer working position, the sleeve taking device 3 descends to the height that the inner holding hand 35 and the outer holding hand 36 can hold a small section of (for example, about 20-50 mm) net sleeve, at the moment, the inner holding hand 35 is inside the net sleeve, the outer holding hand 36 is outside the net sleeve, and the outer holding hand 36 moves to the inner working position and holds the small section of (for example, about 20-50 mm) net sleeve together with the inner holding hand 35; lifting the net sleeve to pull out the net sleeve with the required length and then cutting off the net sleeve; the first driving cylinder 352 of the inner holding hand and the second driving cylinder 353 of the inner holding hand extend completely, at this time, the inner holding hand 36 has a tendency of moving outwards, but the inner holding hand 35 cannot move outwards because the outer holding hand 36 is pushed against the outer side of the inner holding hand, at this time, the outer holding hand driving cylinder drives the outer holding hand 36 to move to the working position, and the outer holding hand and the inner holding hand hold a section of the top end of the cut net cover all the time in the process that the outer holding hand 36 moves from the working position to the working position; the sleeve taking device 3 moves to the position right above the sleeved net object, then the net sleeve is gradually turned over and sleeved on the outer side surface of the sleeved net object in the descending process until the net sleeve is sleeved on the sleeved net object, the outer holding hand 36 moves to the working position of the outer holding hand, the outer holding hand and the inner holding hand loosen the net sleeve, the net sleeve is wrapped on the outer side of the sleeved net object by the elasticity of the net sleeve, and the sleeve taking device 3 moves to the position right above the opening supporting part after rising upwards to continue taking off the net sleeve.

Embodiment 3 of the apparatus for applying a continuous web segment to an object of the present invention (as shown in fig. 1-12):

the bracing member in this embodiment is an inverted truncated cone-shaped member as shown in fig. 8, and does not exclude the use of a truncated pyramid with a polygonal cross-sectional periphery (as shown in fig. 9), a truncated cone with an elliptical cross-sectional periphery, or a variable cross-sectional cylinder or barrel-shaped member with a mixed cross-sectional shape, but at least one section of the member is required to have a gradually increasing cross-sectional size from bottom to top, and even as shown in fig. 12, a straight cylinder (or a cylinder) with the same diameter as the top end surface is added to the top end surface of the variable cross-sectional truncated cone section, a straight cylinder section is added downwards to the thinner lower end surface of the variable cross-sectional section, and a hemispherical section is connected below the straight cylinder section, so that the bracing member is less in bracing when entering the bracing member from the lower end, the deformation in the circumferential direction is less, the net sleeve more easily and uniformly enters between the bracing member and the retaining member 2, and the net sleeve is in an inward contraction state when, that is, the edge of the net cover is inclined inwards to resemble the side surface of a cone frustum with a thick lower part and a thin upper part.

The gripping hand is a pair of circular arc-shaped parts as shown in fig. 10 or two pairs of circular arc-shaped parts as shown in fig. 11, and when the gripping hand grips the net, the gripping hand grips a small section of net which is inclined inward and is beyond the top of the mouth-stretching part, as shown by the gripping hand at the top of the mouth-stretching part in fig. 12.

The action process of the sleeve taking device is the same as that of the holding hand in the embodiment 2 of the device for sleeving the continuous net sleeve on the object in sections, and the net sleeve is turned over and sleeved on the surface of the sleeved net sleeve object.

The holding component adopts a component with a circular ring structure, generally, the mouth supporting component is supported by the holding component 2 in the net sleeve, the mouth supporting component can not be inclined and deviated from the plumb direction obviously, in order to further reduce the inclination degree, the holding component in the embodiment is 2 circular ring structure components with different diameters, the mouth supporting component is supported at different height positions within the height range of the cone frustum, and the inner diameter size of the circular ring holding component is matched with the outer diameter of the mouth supporting component at the supporting part. When the opening supporting part in the shape of the frustum of pyramid is adopted, the holding part can also adopt two hexagonal rings at two different height positions, 3 or more inclined plate-shaped parts matched with the outer side surface of the frustum of pyramid can also be adopted as the holding part, or a part which is in the shape of V in section and is obliquely arranged is used as a supporting part outside at least one diagonal of the opening supporting part.

Embodiment 4 of the device according to the invention for the segmented fitting of a continuous web on an object:

the opening supporting part in the embodiment is formed by combining an inverted hexagonal pyramid section, an inverted circular truncated cone section and an upward uniformly distributed finger section from bottom to top as shown in fig. 13, the hexagonal holding part holds the lowest circular truncated cone section, the net sleeve is sleeved in the opening supporting part, the net sleeve is firstly expanded by the first section of the inverted pyramid section at the lowest part, then is reduced to a smaller size and is expanded again, so that the situation that the net sleeve is unevenly stretched in the circumferential direction of the opening supporting part when a little difference exists in the circumferential direction entering speed of an inlet of the opening supporting part in the continuous upward stretching process can be prevented, the uneven stretching can cause a little difference in the size of holes in the circumferential direction of the net sleeve, and therefore a little inclination of a net sleeve cut can be caused after the net sleeve is cut, and the uneven stretching in the circumferential direction can be effectively and uniformly expanded when the net sleeve is not in contact with the opening supporting part between the two circular truncated cone sections, the edge of the cut net cover is prevented from being not vertical to the axis of the net cover. The effect of the method can be enhanced by serially connecting multiple stages of the parts which become thicker and thinner from bottom to top, but the excessive serial links can increase the friction force between the mouth supporting part and the net sleeve, so that the mouth supporting part in the net sleeve is not descended smoothly when the net sleeve is pulled upwards.

Embodiment 5 of the device according to the invention for the segmented fitting of a continuous web on an object:

in this embodiment, the mouth-stretching member is a truncated cone-shaped variable cross-section cylinder as shown in fig. 8, and the rod-shaped straight sections 110 extending out of 6 rod-shaped mouth-stretching members are uniformly distributed on the outer edge of the top end of the mouth-stretching member, and in order to reduce the friction force between the rod-shaped straight sections 110 of the rod-shaped mouth-stretching members and the net sleeve, the rod-shaped straight sections 110 of the rod-shaped mouth-stretching members are sleeved with heat shrink tubes, and the heat shrink tubes are shrunk on the rod-shaped straight sections 110 of the rod-shaped mouth-stretching members.

The holding hand in this embodiment holds the net only outside the net with the holding hand shown in fig. 14. The 12 rotating holding hands 37 are located at the same radius position in the distribution circumference direction of the 6 circumferentially and uniformly distributed holding heads, two rotating holding hands 37 in one holding head are close to the rotating holding net sleeves, the rotating holding hands 37 rotate by adopting gear and rack transmission, the holding heads have two working positions in the radius direction of the distribution circumference of the holding heads, namely an inner working position and an outer working position, when the holding heads are located at the inner working position (the position in fig. 14), the rotating holding hands 37 can rotate to press the net sleeves on the outer sides of the rod-shaped straight sections 110 of the rod-shaped opening supporting parts to the inner sides of the rod-shaped straight sections to hold the rod-shaped opening supporting parts, and when the rotating holding hands 37 are located at the outer working position, the distance between the rotating holding hands 37 of the pair of holding heads is larger than the maximum size of the horizontal section of the object to be sleeved with the net sleeves.

When the sleeve taking device 3 drives the holding head to move downwards to take the net sleeve, the rotating holding hand 37 is in a state of loosening the net sleeve (shown in fig. 14) and the holding head is located at the outer working position of the holding head, the sleeve taking device 3 drives the holding head to move downwards to the height of the net sleeve to be taken, the holding head moves to the inner working position of the holding head, after the two rotating holding hands 37 rotate oppositely to hold the required whole section of net sleeve, the sleeve taking device 3 drives the holding head to move upwards and then horizontally move to the position right above the sleeved net sleeve object, the sleeve taking device 3 drives the holding head to move downwards to the height position of the net sleeve sleeved object, the holding hand rotates oppositely to loosen the net sleeve, and the net sleeve is sleeved on the sleeved net sleeve object by the elasticity of the net sleeve.

Embodiment 6 of the device according to the invention for the segmented fitting of a continuous web on an object:

this embodiment differs from the embodiment 1 of the apparatus for applying a continuous web segment to an object in that:

the inner holding hand does not move when moving between the inner working position and the middle working position, but swings as shown in fig. 15, the inner holding hand corresponds to the inner working position when swinging to the inclined position with the bottom end closer, and corresponds to the middle working position when swinging to the plumb direction, the swing of the inner holding hand is realized by a rack and pinion structure driven by an air cylinder, and alternative mechanisms such as a corner air cylinder, an air cylinder and a connecting rod are not excluded certainly.

Example 7 of an apparatus according to the invention for applying a continuous web to an object in sections:

in the embodiment, the structure shown in fig. 16 and 17 is adopted by the holding hand to hold the net sleeve only from the inner side of the net sleeve, 3 pairs of holding heads are symmetrically and uniformly arranged on the sleeve taking device 3 in the circumferential direction, the fixed holding hand of each pair of holding heads can move along the connecting line direction of the pair of holding heads, the structural principle of the pair of holding heads is shown in fig. 16 and 17, each holding head comprises a driving device, a guiding device, a fixed holding hand 380, a swinging holding hand 381 and a swinging holding hand connecting rod 382, the driving device and the guiding device are not shown in fig. 16 and 17, the driving device and the guiding device of the fixed holding hand 380 are arranged on the sleeve taking device mounting platform 30, when the holding hand needs to hold the net sleeve at the position of the mouth part, the driving device of the fixed holding hand drives the fixed holding hand 380 to move oppositely until the space between the fixed holding hand 380 and the fixed holding hand is smaller than the size of the inner diameter of the net sleeve on the mouth part, the driving and guiding device of the swinging holding hand, the driving device of the swinging holding hand drives the swinging holding hand connecting rod 382 to move upwards to pull the swinging holding hand 381 to the position shown in fig. 16, the swinging holding hand 381 does not contact with the net sleeve when the fixed holding hand 380 enters the net sleeve on the mouth opening part downwards, the driving device of the fixed holding hand drives the fixed holding hand 380 to move back and forth until the outer side distance between the fixed holding hand and the fixed holding hand approaches the size of the inner diameter of the net sleeve on the mouth opening device, the driving device of the swinging holding hand drives the swinging holding hand connecting rod 382 to move downwards to pull the swinging holding hand 381 to swing to the position shown in fig. 17, the swinging holding hand 381 extends into the net sleeve hole on the outer side of the fixed holding hand 380, the sleeve taking device 3 drives the fixed holding hand 380 to move upwards, the swinging holding hand 381 can hang the net sleeve to lift the net sleeve and cut off the net sleeve, and the driving device of the swinging holding hand drives the swinging holding hand connecting rod 382 to move upwards to And (3) indicating the position, driving the fixed holding hand 380 to move back and forth by the driving device of the fixed holding hand, descending after the distance between the inner sides of the fixed holding hand 380 and the fixed holding hand is larger than the overlooked maximum size of the sleeved net object, pressing the net by the pressing device, and then lifting the sleeve taking device to sleeve the net on the sleeved net object.

Embodiment 8 of the apparatus for applying a continuous web segment to an object of the present invention (as shown in fig. 18):

this embodiment differs from embodiment 1 of the apparatus for applying a continuous web segment to an object in that: the inner holding hand in the embodiment is driven by the air cylinder rope adding transmission, a vertical guide rail 390 is vertically installed on the mounting platform 30 of the sleeve taking device, a first driving air cylinder 355 of the vertical inner holding hand is vertically and fixedly installed on the vertical guide rail 390, a second driving air cylinder 356 of the vertical inner holding hand is installed on the air cylinder rod of the first driving air cylinder 355 of the vertical inner holding hand, the first driving air cylinder 355 of the vertical inner holding hand and the second driving air cylinder 356 of the vertical inner holding hand are connected in series to drive a vertical inner holding hand guiding slide block 354 which slides on the vertical guide rail 390 installed in the vertical direction, a plate-shaped inner holding hand rope pulling component 391 is horizontally installed on the vertical inner holding hand guiding slide block 354, 6 rope fixing holes are distributed on the circumference of the plate-shaped inner holding hand rope pulling component 391, the first driving air cylinder 355 of the vertical inner holding hand and the second driving air cylinder 356 of the vertical inner holding hand drive the inner holding hand pulling rope component 391 to move, corresponding to three working positions of the inner holding hand 35 respectively, the upper pulley mounting plate 392 is horizontally arranged on the jacket removing device mounting platform 30 at a height higher than the highest position of the inner holding hand pulling rope component 391, 6 inner holding hand outer guide pulleys 359 are uniformly distributed and hung on the upper roller mounting plate 392 in the circumferential direction, 6 inner holding hand outer guide pulleys 359 are uniformly distributed on the outer side of the jacket removing device mounting platform 30 in the circumferential direction, the circumferential diameter of the inner holding hand outer guide pulleys 359 is larger than the distance between the farthest outer edges of the pair of holding hand guide rails 39, 6 inner holding hand lower guide pulleys 358 are uniformly distributed on the inner side of the jacket removing device mounting platform 30 in the circumferential direction, the circumferential diameter of the inner holding hand lower guide pulleys 358 is the same as the circumferential diameter of the inner holding hand upper guide pulleys 357 and is smaller than the distance between the nearest inner edges of the pair of holding hand guide rails 39, one end of a transmission rope (not shown in the figure) is fixed in one hole on the inner holding hand pulling rope component 391, according to the technical scheme, the plumb of the transmission rope is downwards, then bypasses the lower guide pulley 358 of the inner holding hand, then horizontally moves towards the outer side in the circumferential direction, is fixed on the guide sliding block 351 of the inner holding hand, outwards bypasses the outer guide pulley 359 of the inner holding hand, further bypasses the upper guide pulley 357 of the inner holding hand towards the inclined upper part, and is then downwards fixed in a hole of a pull rope part 391 of the inner holding hand through an extension spring, the transmission rope forms a right-angled triangle in the plumb surface, and each inner holding hand needs to be driven by one transmission rope, so that the first driving cylinder 355 of the vertical inner holding hand and the second driving cylinder 356 of the vertical inner holding hand can drive the inner holding hand to move between three working positions along with the guide sliding block 351 of the inner holding hand;

the outer holding hand adopts a cylinder with a swing rod and a slider mechanism for transmission, a vertical outer holding hand guide slider 363 is arranged on a vertical guide rail 390 in a sliding way at a height higher than that of a vertical inner holding hand guide slider 354, a platy upper bearing mounting plate 393 is horizontally arranged on the vertical outer holding hand guide slider 363, the upper bearing mounting plate 393 is driven to move up and down by a vertical outer holding hand driving element 364 (a cylinder) arranged on the sheath taking device mounting platform 30, 6 fisheye bearings 366 are uniformly arranged on the upper bearing mounting plate 393 in a circumferential way, 6 fisheye bearings 366 are arranged on the outer holding hand guide slider 361, two ends of 6 outer holding hand driving connecting rods 365 are respectively hinged on the upper bearing mounting plate 393 and the 6 fisheye bearings 366 arranged on the outer holding hand guide slider 361, the vertical outer gripping hand driving element 364 drives the upper bearing mounting plate 393 to move the outer gripping hand between two working positions in a radial direction of the gripping head's distributed circumference via the outer gripping hand driving link 365.

Of course, it is not excluded that the inner holding hand is driven by a connecting rod, the outer holding hand is driven by a rope, or the inner holding hand and the outer holding hand are driven by the same transmission mode.

The working position of the holding hand can be adjusted by adjusting the mounting height or stroke of the driving cylinder, or the working position of the holding hand is adjusted by arranging a stop block in the stroke of the driving cylinder, so that the working position of the holding hand can be adjusted by a motor and lead screw structure.

The holding hand in the above embodiments has many alternatives, and similarly, there are many alternatives for the driving and guiding technical solutions, for example, the cam-rod structure, the rocker structure, and the like are used to drive the holding hand to move, the linear motor, the lead screw, and other driving elements can be used to replace the cylinder as the driving element, and even the double-rod cylinder can replace the cylinder and the guiding component, which are common knowledge in the industry and are not described again with respect to these alternatives.

The invention is not limited to the embodiments discussed above, and a person skilled in the art can deduce other variants from the invention, which also belong to the subject matter of the invention.

Claims

1. A method for sleeving a continuous net sleeve on an object in sections, wherein one end, needing to be unfolded and cut, of the continuous net sleeve is in a plumb bob state with an upward opening end, the method is characterized in that a mouth opening part coaxial with the net sleeve is placed in the end, needing to be cut, of the net sleeve, the net sleeve wraps the mouth opening part, the mouth opening part at least comprises a frustum-shaped structure, the peripheral size of the horizontal cross section of the cone opening part gradually increases from bottom to top, the mouth opening part props the net sleeve from a flat shape with two attached surfaces into a circular or polygonal cross section by means of the self weight and the external size change of the mouth opening part, a retaining part is arranged outside the net sleeve and adjacent to the mouth opening part, the retaining part is located in the frustum-shaped height range outside the mouth opening part, the net sleeve is arranged between the mouth opening part and the retaining part, and can prevent the mouth opening part from falling downwards along the gravity direction borne by the retaining part, the method comprises the following steps that at least two holding heads which are symmetrically arranged in the circumferential direction and can hold the net sleeve which is spread by the mouth-spreading part are used for holding the net sleeve which is spread by the mouth-spreading part, pulling out a section of net sleeve with a required length upwards, then cutting off the net sleeve with the required length along the horizontal cross section of the net sleeve, the holding heads are used for spreading the net sleeve until the size of the inner side of the net sleeve is larger than the size of the maximum overlooked net sleeve object, the holding heads carry the net sleeve to move right above the net sleeve object to be sleeved and then move downwards to the height of the net sleeve on the surface of the outer side of the object, the holding heads are loosened and then move upwards, and the net sleeve is sleeved on the surface.

2. A method of inserting a continuous web over an object in sections according to claim 1 wherein the thicker end of the mouth piece has a perimeter greater than the perimeter of the inner loop of the web in its natural state.

3. The method of claim 1, wherein the holding head holds a small section of the net or the whole section of the net to be cut off at the top of the opening of the net while holding the opening of the expanded net, and if the holding head holds the whole section of the net to be cut off and there is a part of the holding head inside the net, the holding head holds the net and moves down to a height for covering the net on the object, and before the holding head releases the net and moves up, a pressing device is needed to press the net to prevent the net from moving up along with the holding head, and the pressing device is a device on the outer side of the object to be covered with the net and can hold the net on the outer side of the object to be covered with the net to prevent the net from rising up along with the rising of the holding head.

4. The method of claim 1, wherein the direction of plumb of the flaring member is a combination of two or more sections, and the flaring member further comprises a ring of finger-like, cylindrical or columnar sections along the edges of the end face of the frustum-shaped section.

5. A method of applying a continuous sleeve segment over an object according to claim 1, wherein the retaining member and the mouth-stretching member sandwich the sleeve at least two places at a level in the circumferential direction.

6. A device for sleeving a continuous net sleeve on an object in sections is characterized in that the method for sleeving the continuous net sleeve on the object in sections is utilized to sleeve the continuous net sleeve on the sleeved net sleeve object after the continuous net sleeve is sectioned, and the device comprises a frame, a mouth opening part, a holding part, a sleeve taking device and a cutting device; the mouth supporting part at least comprises a frustum-shaped part, the peripheral dimension of the horizontal section of the frustum-shaped part is gradually enlarged from bottom to top in the plumb direction, the holding part is a part which is arranged on the frame, is positioned in the frustum-shaped height range of the mouth supporting part, supports the mouth supporting part at the outer side of the mouth supporting part to prevent the mouth supporting part from falling to be in contact with the holding part and then continues to move downwards,

the sleeve taking device comprises a sleeve taking device mounting platform, a sleeve taking moving part and a holding head, the sleeve taking moving part comprises a sleeve taking driving part and a sleeve taking guiding part, the sleeve taking guiding part is connected with the rack and the sleeve taking device mounting platform, the sleeve taking driving part drives the sleeve taking device mounting platform to move, at least one pair of holding heads are symmetrically mounted on the sleeve taking device mounting platform along the circumferential direction, the holding heads comprise a holding hand, a holding hand driving element and a holding hand guiding element, the holding hand driving element drives the holding hand to move along the holding hand guiding element,

the cutting device comprises a cutting driving element, a cutting guide component and a cutter, wherein the cutting driving element drives the cutter to cut the net sleeve between the height positions which are higher than the top of the opening supporting component and lower than the raised bottommost component of the sleeve taking device.

7. The apparatus of claim 6 wherein the bracing member is formed of two or more segments along the plumb direction, and further comprises a cylindrical segment, or a ring of finger segments along the end of the frustoconical segment.

8. An apparatus for applying a continuous web of material in sections over an object as claimed in claim 6 wherein each pair of gripping heads is symmetrically movable in a direction along the line, each gripping head comprising two gripping hands, the web being gripped or released by relative movement of the two gripping hands.

9. The apparatus according to claim 6, further comprising a pressing means, if the holding hand holds the cut-off net sleeve and the net sleeve has the holding hand therein, the pressing means comprises a pressing head, a pressing head guiding member and a pressing head driving member, the pressing head driving member presses the net sleeve at a height position where the net sleeve is fitted to the surface of the object to be fitted, the pressing head has at least two pressing heads and is arranged symmetrically with respect to the center of the object to be fitted, and the pressing head presses the net sleeve against the outer side surface of the object to be fitted or presses the lower end of the net sleeve against the carrying surface on which the object to be fitted is placed outside the opened net sleeve.

10. A device for fitting a continuous web over an object in sections according to claim 6 wherein the cutters are electrically powered resistance wires, rotating disk cutters or scissors that perform a shearing motion.