CN102211720B - Novel plastic film using device - Google Patents

Abstract

The invention discloses a novel plastic film using device and relates to a daily necessity. The conventional using device has the problems that the conventional using device is not safe and sanitary and is wasted after being used only once. The invention provides a design of a film box with a cutting function to solve the problems that a box cover is depressed and deformed, drop points are deflected, a core cylinder of the film is not convenient to replace, a film head cannot be pulled smoothly and the like. The novel plastic film using device consists of a box body, a box bottom, the box cover, a connection button, a locking button, a reinforcement button, a core cylinder frame, an opening and closing support point, and a cutter; the box body and the box bottom are connected through the connection button; the box body and the box bottom are detachably connected through the opening and closing support point; and a convex cutter and a concave cutter are fixed on the top and the bottom of the box body respectively. The opening angle of the box cover is increased to contribute to the pulling of the film head, the film can be cut easily, the device can be used for a long time, and is not deformed, and the film core cylinder is convenient to replace, and can be fixed in the box and is firm and can bear the impact of conveying and moving.

Description

A kind of plastic sheeting operative installations

Technical field

The present invention relates to the operative installations of a kind of daily necessities, particularly plastic fresh-keeping membrane.

Technical background

Plastics antistaling film Application comparison in daily life is extensive, be mainly used in the clean and fresh-keeping of food, original type of service film is rolled into tubular to be placed in carton, by film from carton lira out when using, film is broken by the iron sheet tooth bar on the corner of carton, time film is finished carton substantially also deformed damaged can only discard, the using method of this form exist carton can only use once about about 30 meters just discarded useless, a part for film is that the exposed outside in packaging is very unhygienic, crown is the exposed very uneasy congruent problem in outside in packaging.

, also there are some problems in actual use in the design of the diaphragm chamber that the band that I proposes in the application of 96229952.9,2005200474358,2005200478715,200520006577X cuts off:

1, the depressed deformation in the middle of lid and drop point offset problem.Original design uses latch at two ends by lid, box body couples together, the lid considering band serrated knife can open and close with it at box, do not take into full account the depressed deformation problem in the middle of drop point skew and lid, the cut-out of film relies on to have come in the cooperation of the shutoff device of lid and box body respectively, the accuracy requirement of shutoff device is quite high, skew occurs drop point once lid just can not cut off film, and lid is because the reason of material, the reason of length, open and close the reason of fulcrum, stress point is easy to produce drop point skew and lid depressed deformation problem in the reason of centre.Material cause refers to that plastics rigidity is not high, and long and thin lid is difficult to ensure when discontinuity do not cave in flexural deformation in centre.Length reason refers in the resistant to bending intensity of long and narrow lid very low.Open and close the few problem of fulcrum and refer to that two latches in dependence front and back are connected with box body, after back and forth opening and closing for a long time, keying fulcrum can wear and tear.Stress point is few related with keying fulcrum in middle problem, open and close lid complete operation in the palm of the hand, the keying of lid is stressed on a point often, and stress point is in centre, and open and close the two ends of fulcrum in lid length, the problem opening and closing fulcrum wearing and tearing stress point depression will inevitably be produced.

2, there is core film cylinder and fix and replace inconvenient problem.Can open at the bottom of original design box body and box, but link together both when opening, fixed film core cylinder does not have special design, and the replacement of core film cylinder is frequent generation when reality uses, based on the consideration of economic and energy saving environmental protection, the film length of core film cylinder will increase, family wear be increased to more than 100 meters from present 30 meters, the increase of film length makes the weight of core film cylinder increase.Based thin film can pull out the consideration with health leggiero, and core film cylinder is wanted unsettled and can be rotated in diaphragm chamber.Transport and the not vitiable consideration of impact of moving based on standing, it is firm that preservative film core cylinder is fixed in Wrapping case.Consider based on productive costs and use habit, the simple handling ease of structure easy to use.Based on the consideration that preservative film is family's fast-moving consumer goods, the replacement of core film cylinder is efficient and convenient;

3, the head of preservative film wears out from slit to be wanted easily.Original design can not meet above-mentioned requirement.

Summary of the invention

The object of the invention is to provide one can block film leggiero, stand permanent use indeformable, replace core film cylinder efficient and convenient, it is firm that core film cylinder is fixed in box, can stand to transport a kind of Novel plastic film use device with the impact of moving.

The present invention realizes like this, a kind of plastic sheeting operative installations, by box body, at the bottom of box, lid, some to junction button, two core tub, some to keying fulcrum, two pairs of limiting footholds, a pair cutter, pair of locking button forms, box body is the plastic container of a bottom opening hollow, the plastic container of an open top hollow at the bottom of box, at the bottom of box with the length of box body and width be identical, along down protruding under box body, along down falling at the bottom of box, at the bottom of box bottom box body, length and the width of lid and box body are similar, there is lid forward position in front bottom lid, lid two bottom sides has edge, lid side, lid is above box body top, it is characterized in that: the often pair of junction button is by connecting pin thread and being connected box and forming, often pair opens and closes fulcrum and connects device and the convex device that connects is formed by recessed, often pair of limiting foothold is made up of limit shaft and position-limited rack, cutter is made up of convex cutter and recessed cutter, often pair of core tub is made up of frame body and frame core, tab is formed by locking pin thread and locking box,

There is a platform in the front at box body top, recessed cutter is vertically fixed on the surface of platform, a boss after platform, boss there is a film outlet, all keying fulcrums convex connects device and the recessed device that connects is on a surface being arranged in film outlet boss below, another is arranged on the rear bottom lid, and all keying fulcrum centers of circle overlap with center of circle line; Two limit shafts of two limiting footholds are separately fixed on the inwall on edge, two lid sides, and two position-limited racks are separately fixed on the outer wall at boss two ends, and the limiting foothold center of circle overlaps with center of circle line; The connection pin thread of all junction buttons is on a box body inwall being arranged in edge under box body with being connected box, and another is on inwall at the bottom of the box being arranged in edge at the bottom of box; Two core tub at the bottom of box in two ends on, convex cutter bottom the lid near lid forward position on, the locking pin thread of tab and locking box are on the one end be vertically fixed at the bottom of box, and another is vertically fixed on the one end in box body.

Wherein, the described convex device that connects is become with male head group by base, and male head protrudes in the centre of base, the male head center of circle has one with the open-work of open seam UNICOM, base is in male head both sides, and base top is sunk arc; The described recessed device that connects is become with female head group by seat of bearing responsibility, top is seated against the both sides of female head, a top of bearing responsibility is the arc protruded, the two ends of horizontal connecting shaft are connected to bears responsibility on a center of circle, female head is embedded in the centre of seat of bearing responsibility, and a center of circle of bearing responsibility is identical to radius and the male head center of circle at a top of bearing responsibility to the radius at base top; The longitudinal length of male head is identical with the longitudinal length of female head; The diameter of connecting shaft is identical with the diameter of open-work, and one opens and closes in front female at this keying fulcrum of the male head of fulcrum, connecting shaft in open-work, the male head center of circle, bear responsibility a center of circle with open and close the fulcrum center of circle and overlap.

Wherein, described limit shaft and the position of spacing hole are on the limiting foothold center of circle, and spacing hole and spacingly stitch UNICOM, limit shaft is in spacing hole.

Wherein, described convex cutter squeezes block by serrated knife, lordosis, rear convex crowded block forms, serrated knife is the below that crown is vertically fixed in bottom lid downwards, all lordosis squeeze block and form a line in the front of serrated knife with a gap, adjacent lordosis squeezes between block front space, the front end that lordosis squeezes block is connected on lid forward position, and all rear convex crowded blocks form a line at the rear of serrated knife with a gap, has rear space between adjacent rear convex crowded block;

Described recessed cutter is made up of cutter groove, front short raised line, rear short raised line, cutter groove is made up of long raised line longitudinal arrangement after long raised line before one and, the notch of cutter groove upwards, the width of cutter groove is greater than the thickness of serrated knife, serrated knife is in cutter groove, the rear end of all front short raised lines is connected on front long raised line, and the front end of all rear short raised lines is connected on rear long raised line;

The position of front short raised line is identical with the position in front space, and the position of rear short raised line is identical with the position in rear space, and the lateral length of front short raised line, rear short raised line is not less than 2 millimeters.

Wherein, described connection pin thread is one piece of horizontal inside protrusion, and one end is connected with reinforced rib; There is individual catching groove one end of described connection box, and the button mouth of catching groove is outside, and the other end connecting box is connected with reinforced rib, connects pin thread in the catching groove connecting box; Strengthen the top being buckled in reinforced rib.

Wherein, described core tub is made up of two frame bodies and two frame cores, and a downward slot is arranged at the top of frame body, the medial surface of frame body has a breach, the breach of two frame bodies is relative, and frame core is made up of inserted sheet, frame core print and horizontal core, and inserted sheet is vertical, frame core print is on the top of inserted sheet, horizontally horizontal core gives prominence on inserted sheet, and inserted sheet is in slot, and frame core print is in the outside of slot, horizontal core exposes the outside at frame body in breach, and two horizontal cores are relative.

Wherein, described locking box is made up of the locking plate longitudinal arrangement of the locking fixed end of two vertical configurations, size between keyed end is less than the size of locking mouth, and locking pin thread is in the centre of two locking plates, and the top of locking box is contrary with the top orientation of locking pin thread.

Wherein, described film outlet is made up of a slit and a lip hole, and lip hole is in the centre of slit, and the width in the middle of slit is greater than the width at two ends.

Wherein, the point of a knife of serrated knife has blade, and the spacing of adjacent crown is not more than 2 millimeters, and the degree of depth of cutter tooth is not more than 2 millimeters.

Advantage of the present invention is 1, and open and close the quantity of fulcrum according to the length configuration of lid, even centre point is stressed, the centre of lid can not recessed embedding distortion.2, the center of all keying fulcrums, on the position of a straight line, ensures the precision of lid drop point and the basis of accuracy.3, by the restriction of male head and female head width, can not to wear and tear in left and right directions by the restriction lid on boss and edge, lid side and box and offset, be ensure the precision of lid drop point and the supplementary means of accuracy.4, the angle that lid is opened is large, and lip hole facilitates the pull-out of thin-film heads.5, replace core film cylinder convenient.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further illustrated:

Fig. 1 is the schematic top plan view of box body.

Fig. 2 is the bottom plan schematic diagram of lid.

Fig. 3 is the bottom plan schematic diagram of box body.

Fig. 4 is the schematic top plan view at the bottom of box.

Fig. 5 is the side-looking plan sketch of frame core.

Backsight generalized section time Fig. 6 is at the bottom of box, lid will be fixed on box body.

The backsight generalized section that Fig. 7 is at the bottom of box body, box, lid coordinates.

The side elevational cross-section schematic diagram that Fig. 8 is at the bottom of box body, box, lid coordinates.

Fig. 9 is the generalized section cutting off film.

In Fig. 1 ~ Fig. 9:

10: box body, 11: platform, 12: boss, 13: film exports, 14: lip hole, 15: slit, 16: box body inwall, 17: edge under box body, 18: the horizontal vertical center line of box body, 19: box body longitudinal centerline,

20: at the bottom of box, 21: box bottom horizontal vertical center line, 22: inwall at the bottom of box, 23: edge at the bottom of box, 24: limiting foothold, 25: the limiting foothold center of circle, 26: spacing seam, 27: position-limited rack, 28: spacing hole, 29: limit shaft,

30: lid, 31: lid forward position, 32: edge, lid side, 33: bottom lid, 34: the horizontal vertical center line of lid, 35: lid longitudinal centerline, 36: the horizontal vertical center line of cross-sectional plane after coordinating at the bottom of lid, box body, box, 37: the horizontal center line of cross-sectional plane after coordinating at the bottom of lid, box body, box, 38: reinforced rib, 39: strengthen button

40: junction button, 41: connect pin thread, 42: connect box, 43: button mouth, 44 catching grooves:, 45: tab, 46: locking pin thread, 47: locking box, 48: locking plate, 49: locking mouth,

50: core tub, 51: frame body, 52: slot, 53: breach, 54: frame core, 55: inserted sheet, 56: horizontal core, 57: frame core print, 58: core film cylinder, 59: film,

60: center of circle line, 61: convexly connect device, 62: male head, 63: open-work, 64: the male head center of circle, 65: base, 66: open seam, 67: the convex longitudinal centerline connecing device, 68: keyed end,

70: open and close fulcrum, 71: recessedly connect device, 72: female head, 73: female crown portion, 74: seat of bearing responsibility, 75: the recessed longitudinal centerline connecing device, 76: a center of circle of bearing responsibility, 77: connecting shaft, 78: open and close the fulcrum center of circle,

80: cutter, 81: convex cutter, 82: serrated knife, 83: cutter tooth, 84: crown, 85: lordosis squeezes block, 86: rear convex crowded block, 87: front space, 88: rear space, 89: gap, 90: the horizontal vertical center line of serrated knife cross-sectional plane,

91: recessed cutter, 92: front long raised line, 93: rear long raised line, 94: cutter groove, 95: front short raised line, 96: front recessed crowded hole, 97: rear short raised line, 98: recurve squeezes hole, 99: the horizontal vertical center line of cutter groove cross-sectional plane.

Detailed description of the invention

That this plastic sheeting operative installations of hypothesis has at the bottom of 10 pairs of junction buttons, 1 pair of tab connecting box body and box in the present embodiment, and suppose that the connection pin thread of 10 junction buttons is all with it box, connect box all at the bottom of box on, connect pin thread worked good with the upper-lower position being connected box;

Embodiment has 3 to keying fulcrum and 2 pairs of limiting foothold connecting box bodies and lid, and hypothesis opens and closes the convex device that connects of fulcrum under lid, and the recessed device that connects is with it box.

Connect pin thread when concrete enforcement and be connected box, recessedly connect device and the convex position connecing device can be replaced according to specific circumstances.

In order to the convenience illustrated, we define the long one end of size at the bottom of box body, lid and box to the other end for longitudinal, and one end that at the bottom of definition box body, lid and box, size is short is laterally to the other end, and it is longitudinally length that general run of thins is called in the following text, and title is laterally width.One side of definition platform is front, after a side of boss is.

With reference to the schematic top plan view that Fig. 1, Fig. 1 are box bodies.

Show in figure: platform 11 is on the front at box body 10 top, boss 12 is at the rear portion of platform 11, recessed cutter 91 longitudinal arrangement on platform 11, film outlet 13 is in the centre of boss 12, all recessed device 71 1 shape that connects are arranged in film and export on the boss 12 at 13 rears, and the position-limited rack 27 of limiting foothold 24 is on the two ends outer wall at boss 12 rear.

The horizontal vertical center line 99 of cutter groove cross-sectional plane is in the centre of cutter groove 94, and 18 is the horizontal vertical center lines of box body, and 60 is center of circle lines.

Film outlet 13 is that a slit 15 and a lip hole 14 form, the length of slit 15 and the width of film similar, lip hole 14 is in the centre of slit 15, conveniently point and film is ejected from lip hole 14, the diameter in lip hole 14 is greater than the diameter of finger, the width of slit 15 is broad in the middle small in ends, and object the slit 15 of film along both sides, lip hole 14 is tiled smoothly come.

The recessed device 71 that connects is made up of bear responsibility seat 74 and female 72, each is recessed connects female 72 of device 71 in centre, bear responsibility seat 74 the both sides of female 72, and seat 74 top of bearing responsibility is the arc protruded, and the two ends of horizontal connecting shaft 77 are connected to bearing responsibility on a center of circle 76 of two seat 74 medial surfaces of bearing responsibility.

All centers of circle 76 of bearing responsibility are on the position of straight line, and all centers of circle 76 of bearing responsibility overlap with center of circle line 60.Liang Ge spacing hole 28 position overlaps with center of circle line 60 on the limiting foothold center of circle 25, spacing hole 28 and spacing seam 26 UNICOM.

Center of circle line 60 represents to the distance of the horizontal vertical center line 18 of box body with A.

Each recessed longitudinal centerline 79 connecing device 71 is the centre of female 72, each is recessed connect device 71 lengthwise position with box body longitudinal centerline 19 for longitudinal benchmark distribution, a middle recessed device 71 that connects is on box body longitudinal centerline 19, remaining recessed device 71 that connects is to the arrangement of box body longitudinal centerline 19 bilateral symmetry, and concrete position represents with B and C.

The cutter groove 94 of recessed cutter 91 is made up of long raised line 93 after long raised line 92 before one and, and cutter groove 94 width is identical linearly, and upwards, the horizontal vertical center line 99 of cutter groove cross-sectional plane represents to the distance of box body transverse direction vertical center line 18 with D the notch of cutter groove 94.

Short raised line 95 before the front of front long raised line 92 has some, the rear end of all front short raised lines 95 is connected on front long raised line 92, recessed crowded hole 96 before forming between adjacent front short raised line 95; Short raised line 97 after the rear of rear long raised line 93 has some, one end of all rear short raised lines 97 is connected on rear long raised line 93, forms a recurve and squeeze hole 98 between adjacent rear short raised line 97.

The size of front short raised line 95 and rear short raised line 97 transverse direction is not less than 2 millimeters.

With reference to the bottom plan schematic diagram that Fig. 2, Fig. 2 are lids.

Show in figure, convex cutter 81 longitudinal arrangement bottom lid 33 front, all convex devices 61 that connects are male 62 rears being arranged in bottom lid 33 to next shape, limit shaft 29 in lid side along on 32 rear inwalls.

90 is the horizontal vertical center lines of serrated knife cross-sectional plane, and 34 is the horizontal vertical center lines of lid, and 60 is center of circle lines.

Center of circle line 60 represents to the distance A ' of the horizontal vertical center line 34 of lid, and A ' is identical with the distance of the A of Fig. 1.The horizontal vertical center line 90 of D ' expression serrated knife cross-sectional plane is to the distance of the horizontal vertical center line 34 of lid, and D ' is identical with the distance of the D of Fig. 1.

Each is convex connects the hero 62 of device 61 in centre, and base 65 is the both sides of male 62, and base 65 top is sunk arc.

Male 62 has the open-work 63 of a longitudinal direction, open-work 63 on the male head center of circle 64, open-work 63 and open seam 66 UNICOM.

All male head centers of circle 64 overlap with center of circle line 60 on the position of straight line.Limit shaft 29 overlaps with center of circle line 60 on the limiting foothold center of circle 25.

Each convex longitudinal centerline 67 connecing device 61 is the centre of male 62, and a male longitudinal length of 62 is identical with the longitudinal length of female 72 in Fig. 1; Each is convex connect device 61 bottom lid 33 lengthwise position with lid longitudinal centerline 35 for longitudinal benchmark distribution, a middle convex device 61 that connects is on lid longitudinal centerline 35, and remaining convex device 61 that connects arranges to lid longitudinal centerline 35 bilateral symmetry.Particular location B ' represents.The length of B ' is identical with the length of the B of Fig. 1.

Convex cutter 81 is close to lid forward position 31, serrated knife 82 is that crown 84 to be vertically fixed in bottom lid on 33 downwards, all lordosis squeeze block 85 and form a line with the gap 89 that serrated knife 82 keeps the same and be fixed on the front of serrated knife 82, the front end that lordosis squeezes block 85 is connected on lid forward position 31, adjacent lordosis squeezes between block 85 and mutually maintains a front space 87, all rear convex crowded blocks 86 form a line with the gap 89 that serrated knife 82 keeps the same and are fixed on the rear of serrated knife 82, space 88 after mutually maintaining between adjacent rear convex crowded block 86.

Front space 87 is corresponding with the front short raised line 95 quantity same position of Fig. 1, and rear space 88 is corresponding with the rear short raised line 97 quantity same position of Fig. 1.The longitudinal size in front space 87 is greater than the thickness of front short raised line 95, and the longitudinal size in rear space 88 is greater than the thickness of rear short raised line 97.

The lordosis transverse distance of squeezing between block 85 to rear convex crowded block 86 is more than or equal to front long raised line 92 and arrives the maximum transverse distance of rear long raised line 93.

Crown 84 on serrated knife 82 squeezes the height of block 85 and rear convex crowded block 86 lower than lordosis, prevents the injury of serrated knife 82 pairs of human bodies.

The cutter tooth 83 of serrated knife 82 sharply has sword, and the spacing of adjacent crown 84 is not more than 1.5 millimeters, and the degree of depth of cutter tooth 83 is not more than 1.5 millimeters.Have the crown 84 of sword as needle point, can poke plastic sheeting easily, the process that film blocks first puts the process of rear line, and the degree of depth of cutter tooth 83 determines the degree of depth of blocking film completely.

With reference to the bottom plan schematic diagram that Fig. 3, Fig. 3 are box bodies.

Show in figure: film outlet 13 is at the top of box body 10, pin thread 41 is connected along arrangement 5 each on 17 under the box body of box body inwall 16 both sides, connect the protrusion that pin thread 41 is block length bar shapeds, inwardly give prominence under box body along on 17 horizontally, the one end connecting pin thread 41 is connected with reinforced rib 38, the top of reinforced rib 38 has and strengthens button 39, strengthen the extension body that button 39 is reinforced ribs 38, on the inwall that it can stretch at the bottom of box, effect relies on inwall at the bottom of box to prevent the outside distortion of box body inwall 16.

E point is the mark connecting pin thread 41 initiating terminal, represents that this end enters the initial point connecting box.One end of connection strengthening rib 38 is in the contrary direction of this end.

Locking pin thread 46 is little column bodies broad in the middle in two, and bottom is connected to the one end on the left side in box body 10 top.

With reference to the schematic top plan view that Fig. 4, Fig. 4 are at the bottom of box.

In figure, box 42 is connected along arrangement 5 each on 23 at the bottom of the box of inwall 22 both sides at the bottom of box, connecting the position of box 42 is corresponding with connection pin thread 41 position in Fig. 3, catching groove 44 is on the one end connecting box 42, the button mouth 43 of catching groove 44 is outside, and the other end connecting box 42 is connected with reinforced rib 38.The top of reinforced rib 38 has and strengthens button 39, strengthen the extension body that button 39 is reinforced ribs 38.

In figure, catching groove 44 is represented by dashed line, E ' some position in catching groove 44 terminal, if E point arrives at E ' represent that connecting pin thread 41 has entered in connection box 42 completely.

The bottom of locking box 47 is connected on the top on 20 left sides at the bottom of box, and locking box 47 is passages that of being made up of 2 locking plate 48 longitudinal arrangements with keyed end 68 has locking mouth 49, and the size between keyed end 68 is less than the size of locking mouth 49.Locking box 47 coordinates with the position of locking pin thread 46, and locking pin thread 46 is in the centre of the locking plate 48 of locking box 47, and locking pin thread 46 is contrary with the direction at locking box 47 top.

Two frame bodies 51 of core tub 50 respectively at the bottom of box 20 two ends.

A downward slot 52 is arranged at the top of each frame body 51, and the medial surface of frame body 51 has the breach 53 of a breach 53, two frame bodies 51 to be relative.

With reference to the side-looking plan sketch that Fig. 5, Fig. 5 are frame cores.

Frame core 54 is made up of inserted sheet 55, frame core print 57 and horizontal core 56, inserted sheet 55 is vertical sheets, horizontally horizontal core 56 is fixed on inserted sheet 55, frame core print 57 is at the top of inserted sheet 55, inserted sheet 55 inserts slot 52 li in the diagram, frame core print 57 is in the outside of slot 52, and horizontal core 56 drops in breach 53 and exposes in the outside of frame body 51.Two horizontal cores 56 are relative.

With reference to Fig. 6, Fig. 6 be at the bottom of box, backsight generalized section when lid will be fixed on box body.

In figure, at the bottom of box, 20 are close to below box body 10, connect the outside of box 42 on the right of connection pin thread 41, connect pin thread 41 outside the button mouth 43 of catching groove 44, locking pin thread 46 is also in the outside of the locking mouth 49 of locking box 47, because connect pin thread 41 not in the catching groove 44 connecting box 42, thus this time box at the bottom of 20 not to be connected to above box body 10.If advanced to the left side in 20 directions of following the arrow at the bottom of box, at the bottom of box, 20 will snap onto above box body 10.

In figure, lid 30 is above box body 10 top, and the longitudinal centerline 35 of lid overlaps with the longitudinal centerline 19 of box body, each male 62 outside correspondence female 72, each seat 74 outside at corresponding base 65 of bearing responsibility, each connecting shaft 77 is in the outside of corresponding open-work 63.Limit shaft 29 is in the outside of the spacing hole 28 of position-limited rack 27.

If the connecting shaft 77 on lid 30 is entered into by open seam 66 the inside of open-work 63, limit shaft 29 to enter into spacing hole 28 the inside by spacing seam 26, male 62 the inside of female 72, lid 30 has just been connected on the top of box body 10.

In figure, core tub 50 is at the bottom of box on 20, the horizontal core 56 of core tub 50 is hung a core film cylinder 58, core film cylinder 58 at the bottom of box 20 be not arranged on box body 10 before be arranged in core tub 50, the process of installing is such: be first inserted in the two ends of core film cylinder 58 by the horizontal core 56 of frame core 54, be inserted in the slot 52 of frame body 51 by the inserted sheet 55 of frame core 54 again, like this, core film cylinder 58 has just been arranged in the core tub 50 of at the bottom of box 20.Core film cylinder 58 at this time at the bottom of box on 20 except can moving up, all can not move to all directions.

After installing core film cylinder 58, by the film of core film cylinder 58 finger 14 outsides shifting box body 10 onto from lip hole, when being pulled out outward by film, film can smoothly spread out in the slit 15 of film outlet 13.

Reference Fig. 7, Fig. 7 are the backsight generalized sections after coordinating at the bottom of box body, lid, box.

After 20 propellings left at the bottom of box, first be connect pin thread 41 to enter in the catching groove 44 of connection box 42, locking pin thread 46 starts to enter in locking box 47, after continuing propelling, the top E point connecting pin thread 41 arrives the top E ' point connecting box 42, locking pin thread 46 all enters in locking box 47, because the diameter of the centre of locking pin thread 46 is bigger than normal, locking pin thread 46 can not exit easily from locking box 47.At this time 20 just to snap onto above box body 10 completely and can not withdraw easily at the bottom of box.

At the bottom of box, 20 with after box body 10 couples together, frame core print 57 above frame core 54 can not move up by the restriction of box body 10 inner top, at this time all around all can not the moving up and down of inserted sheet 55, this means: core film cylinder 58 lightly freely can rotate neatly on horizontal core 56, all around can not move up and down, the vibrations of transporting and carrying can be stood.

If will 20 will to take off from box body 10 at the bottom of box, as long as 20 firmly will to move right at the bottom of box, make locking pin thread 46 be connected box 42 from locking box 47 withdraw with being connected pin thread 41, be returned to the state of Fig. 6, at the bottom of box, 20 just can take off from box body 10.

The replacement of core film cylinder 58 can be thus completed: first 20 will to withdraw from box body 10 at the bottom of box, upwards take down the core film cylinder 58 that will replace, after loading onto new core film cylinder 58, film 59 is pulled out from lip hole 14, to 20 be arranged on box body 10 at the bottom of box again, the replacement of core film cylinder 58 just completes.The overall process that core film cylinder 58 is replaced completes in the outside of box body 10, and the space of operation is large, step simple, easily very convenient.

Be fixed on box body 10 top to lid 30 to be below described:

Because lid longitudinal centerline 35 overlaps with box body longitudinal centerline 19, the distance of B with B ' is identical, connecting shaft 77 can enter into open-work 63 by open seam 66, limit shaft 29 can enter into spacing hole 28 by spacing seam 26, each is convex connects the hero 62 of device 61 to corresponding recessed female 72 li of connecing device 71, each recessed seat 74 of bearing responsibility connecing device 71 connects in the base 65 of device 61 the convex of correspondence, and lid 30 and box body 10 have been coupled together at the top of box body 10 by keying fulcrum 70 and limiting foothold 24.

Because the length of boss 12 is identical along the length of 32 with lid side, male 62 identical with the length of female 72, and lid 30 is to have any vertical misalignment on box body 10 top.

Meanwhile, when some points of lid 30 are subject to downward power time, this power can be distributed to each at once and open and close fulcrum 70, and the situation of depressed deformation can not occur the longitudinal direction of lid 30.

With reference to the side elevational cross-section schematic diagram that Fig. 8, Fig. 8 are at the bottom of box body, box, after lid cooperation.

The figure illustrates the matching relationship of at the bottom of lid 30, box body 10, box 20, also show and recessedly connect device 71 and convexly connect device 61, matching relationship between convex cutter 81 and the transverse direction of recessed cutter 91:

The horizontal vertical center line 34 of lid overlaps with the horizontal vertical center line 18 of box body, and center of circle line 60 overlaps with all keying fulcrum centers of circle 78, the limiting foothold center of circle 25.

Therefore:

1, each center of circle 76 of bearing responsibility, the male head center of circle 64 overlaps with center of circle line 60, each opens and closes fulcrum 70 point-blank, because each connecting shaft 77 opening and closing fulcrum 70 is in the open-work 63 of correspondence, the bear responsibility top of seat 74 protrudes arc, the top of base 65 is the arcs fallen in, the radius of the two is identical, seat 74 of bearing responsibility can rotate in base 65, so lid 30 is can with a center of circle 76 of bearing responsibility, the male head center of circle 64 is the center of circle, fan-shaped keying is done at box body 10 top, that the front of lid 30 is upwards opened when opening, that the front drop point of lid 30 is replied very accurately on the front at box body 10 top time closed.

2, because A and A ', D ' are identical with the distance of D, the male head center of circle 64 is the same with a center of circle 76 of bearing responsibility to the distance of serrated knife cross-sectional plane cross central line 90 to the distance of cutter groove cross-sectional plane transverse direction vertical center line 99, so time lid 30 is combined on box body 10 top, serrated knife 82 is in cutter groove 94, can export 13 pull-out films from film time lid 30 is upwards opened, lid 30 is replied when box body 10 top front, and serrated knife 82 is in cutter groove 94.

3, because the lordosis transverse distance of squeezing between block 85 to rear convex crowded block 86 is more than or equal to front long raised line 92 arrive the maximum transverse distance of rear long raised line 93, so time lid 30 is closed, lordosis squeezes the outside that block 85 is close to front long raised line 92, rear convex crowded block 86 is close to the outside of rear long raised line 93, and whole cutter groove 94 squeezes the inside of block 85 and rear convex crowded block 86 at lordosis.

Because front space 87 is corresponding with front short raised line 95 quantity same position, rear space 88 is corresponding with rear short raised line 97 quantity same position, the width in front space 87 is greater than the thickness of front short raised line 95, the width in rear space 88 is greater than the thickness of rear short raised line 97, so time lid 30 is closed, front short raised line 95 is in front space 87, and rear short raised line 97 is in rear space 88.

4, bottom box body 10 the connection pin thread 41 on both sides at the bottom of box the connection box 42 on 20 both sides catching groove 44 in.At the bottom of box, 20 snap onto below box body 10 securely.

5, the center of circle of the horizontal core 56 of core tub 50 is the center-points 57 after coordinating at the bottom of box body, box, as long as the external diameter of core film cylinder 58 is not more than the internal diameter of sectional area, core film cylinder 58 can freely rotate completely wherein.

With reference to Fig. 9 and Fig. 8.Fig. 9 is the generalized section cutting off film.

The process that film 59 cuts off completes like this.As shown in Figure 9 by lid 30 from the front at box body 10 top become fan-shaped upwards all open after, because cutter groove 94 exports to film the distance that 13 places have a section, the front end of the film 59 of a section must be had to stay box body 10 top, film 59 is pulled outward out from film outlet 13, just film 59 can be blocked as long as lid 30 is pressed in downwards on box body 10.

The process of blocking is such: at lid 30 to when pressing down, lordosis squeezes block 85, rear convex crowded block 86 can be close to front long raised line 92 and rear long raised line 93 runs downwards, film 59 squeezes block 85 and rear convex crowded block 86 at lordosis, under the effect of front short raised line 95 and rear short raised line 97, the outside being forced in front long raised line 92 and rear long raised line 93 stretches downwards, so just force the film 59 on cutter groove 94 unsettled tight on the cutter groove 94 mouthfuls, lid 30 is pressed more severe, film 59 stretches tight tighter, along with pressing down of lid 30, the crown 84 of serrated knife 82 is inserted into film 59, first shape breakpoint in a row on film 59, then under the effect of cutter tooth 83, become a broken line, film 59 is truncated.

Claims (9)

1. a plastic sheeting operative installations, by box body (10), (20) at the bottom of box, lid (30), some to junction button (40), two core tub (50), some to keying fulcrum (70), two pairs of limiting footholds (24), a pair cutter (80), pair of locking button (45) forms, box body (10) is the plastic container of a bottom opening hollow, (20) at the bottom of box are the plastic container of an open top hollow, the length of (20) at the bottom of box and box body (10) and width be identical, down protrude along (17) under box body, down fall in along (23) at the bottom of box, (20) at the bottom of box are in box body (10) bottom, length and the width of lid (30) and box body (10) are similar, bottom lid, there is lid forward position (31) in the front of (33), there is lid side on both sides along (32), lid (30) is in the top at box body (10) top, it is characterized in that: the often pair of junction button (40) by connection pin thread (41) be connected box (42) and form, often pair opens and closes fulcrum (70) and connects device (71) and the convex device (61) that connects is formed by recessed, often pair of limiting foothold (24) is made up of limit shaft (29) and position-limited rack (27), cutter (80) is made up of convex cutter (81) and recessed cutter (91), each core tub (50) is made up of frame body (51) and frame core (54), tab (45) is made up of locking pin thread (46) and locking box (47),

There is a platform (11) in the front at box body (10) top, recessed cutter (91) is vertically fixed on the surface of platform (11), a boss (12) after platform (11), boss (12) there is film outlet (13), all keying fulcrums (70) convex connects device (61) and the recessed device (71) that connects is on a surface being arranged in film outlet (13) boss below (12), another is arranged on the rear of (33) bottom lid, all keying fulcrum centers of circle (78) overlap with center of circle line (60), two limit shafts (29) of two pairs of limiting footholds (24) are separately fixed at two lid sides along on the inwall of (32), two position-limited racks (27) are separately fixed on the outer wall at boss (12) two ends, and the limiting foothold center of circle (25) overlap with center of circle line (60), the connection pin thread (41) of all junction buttons (40) be connected box (42) and be one and be arranged in along on the box body inwall (16) of (17) under box body, another is arranged at the bottom of box along on inwall (22) at the bottom of the box of (23), on two ends in two core tub (50) (20) at the bottom of box, convex cutter (81) is bottom the lid near lid forward position (31) on (33), locking pin thread (46) and locking box (47) of tab (45) are on the one end be vertically fixed in (20) at the bottom of box, and another is vertically fixed on the one end in box body (10).

2. a kind of plastic sheeting operative installations according to claim 1, it is characterized in that: the described convex device (61) that connects is made up of base (65) and male head (62), male head (62) protrudes the centre in base (65), the male head center of circle (64) has one with the open-work (63) of open seam (66) UNICOM, base (65) is in male head (62) both sides, and base (65) top is sunk arc; The described recessed device (71) that connects is made up of seat of bearing responsibility (74) and female head (72), to bear responsibility the both sides of seat (74) in female head (72), seat (74) top of bearing responsibility is the arc protruded, the two ends of horizontal connecting shaft (77) are connected to bears responsibility on a center of circle (76), female head (72) is embedded in the centre of seat of bearing responsibility (74), and a center of circle (76) of bearing responsibility is identical to radius and the male head center of circle (64) at seat of bearing responsibility (74) top to the radius at base (65) top; The longitudinal length of male head (62) is identical with the longitudinal length of female head (72); The diameter of connecting shaft (77) is identical with the diameter of open-work (63), a male head (62) opening and closing fulcrum (70) is inner at the female head (72) of this keying fulcrum (70), connecting shaft (77) is inner at open-work (63), and the male head center of circle (64), a center of circle (76) of bearing responsibility overlap with the keying fulcrum center of circle (78).

3. a kind of plastic sheeting operative installations according to claim 1, it is characterized in that: described limit shaft (29) and the position of spacing hole (28) are on the limiting foothold center of circle (25), spacing hole (28) and spacing seam (26) UNICOM, limit shaft (29) is inner in spacing hole (28).

4. a kind of plastic sheeting operative installations according to claim 1, it is characterized in that: described convex cutter (81) is by serrated knife (82), lordosis squeezes block (85), rear convex crowded block (86) composition, serrated knife (82) is the below that crown (84) is vertically fixed in (33) bottom lid downwards, all lordosis squeeze block (85) and form a line in the front of serrated knife (82) with having gap (89), adjacent lordosis squeezes between block (85) front space (87), the front end that lordosis squeezes block (85) is connected on lid forward position (31), all rear convex crowded blocks (86) form a line at the rear of serrated knife (82) with having gap (89), rear space (88) is had between adjacent rear convex crowded block (86),

Described recessed cutter (91) is by cutter groove (94), front short raised line (95), rear short raised line (97) composition, cutter groove (94) is made up of long raised line (93) longitudinal arrangement after long raised line (92) before one and, the notch of cutter groove (94) upwards, the width of cutter groove (94) is greater than the thickness of serrated knife (82), serrated knife (82) is inner at cutter groove (94), the rear end of all front short raised lines (95) is connected on front long raised line (92), the front end of all rear short raised lines (97) is connected on rear long raised line (93),

The position of front short raised line (95) is identical with the position of front space (87), the position of rear short raised line (97) is identical with the position of rear space (88), and the lateral length of front short raised line (95), rear short raised line (97) is not less than 2 millimeters.

5. a kind of plastic sheeting operative installations according to claim 1, is characterized in that: described connection pin thread (41) is one piece of horizontal inside protrusion, and one end is connected with reinforced rib (38); One end of described connection box (42) there is individual catching groove (44), the button mouth (43) of catching groove (44) is outside, the other end connecting box (42) is connected with reinforced rib (38), connects pin thread (41) in the catching groove (44) connecting box (42); Strengthen the top of button (39) in reinforced rib (38).

6. a kind of plastic sheeting operative installations according to claim 1, it is characterized in that: described core tub (50) is made up of two frame bodies (51) and two frame cores (54), a downward slot (52) is arranged at the top of frame body (51), the medial surface of frame body (51) has a breach (53), the breach (53) of two frame bodies (51) is relative, frame core (54) is by inserted sheet (55), frame core print (57) and horizontal core (56) composition, inserted sheet (55) is vertical, horizontally horizontal core (56) gives prominence on inserted sheet (55), frame core print (57) is on the top of inserted sheet (55), inserted sheet (55) is inner at slot (52), frame core print (57) is in the outside of slot (52), horizontal core (56) exposes the outside in frame body (51) in breach (53), two horizontal cores (56) are relative.

7. a kind of plastic sheeting operative installations according to claim 1, it is characterized in that: described locking box (47) is made up of locking plate (48) longitudinal arrangement of the locking fixed end (68) of two vertical configurations, size between keyed end (68) is less than the size of locking mouth (49), locking pin thread (46) is in the centre of two locking plates (48), and the top of locking box (47) is contrary with the top orientation of locking pin thread (46).

8. a kind of plastic sheeting operative installations according to claim 1, it is characterized in that: described film outlet (13) is made up of a slit (15) and a lip hole (14), lip hole (14) is in the centre of slit (15), and the width in the middle of slit (15) is greater than the width at two ends.

9. a kind of plastic sheeting operative installations according to claim 4, it is characterized in that: the point of a knife of serrated knife (82) has blade, the spacing of adjacent crown (84) is not more than 2 millimeters, and the degree of depth of cutter tooth (83) is not more than 2 millimeters.