CN113184298A

CN113184298A - Hot cutter and hot cutting device using same

Info

Publication number: CN113184298A
Application number: CN202110452915.6A
Authority: CN
Inventors: 张栋栋; 郑鹏波; 马小明
Original assignee: Zhejiang Meisheng Daily Chemical Products Co ltd
Current assignee: Zhejiang Meisheng Daily Chemical Products Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-07-30
Anticipated expiration: 2041-04-26
Also published as: CN113184298B

Abstract

The application relates to packaging equipment and discloses a hot cutting device of hot cutter and applied this hot cutter, wherein, hot cutter includes the cutter body, be provided with on the cutter body and be used for making the pyrocondensation membrane produce the different portion of cutting of circular arc transition at the piece edge that washes the dishes, the junction between different portion of cutting and the cutter body forms the circle and cuts the turning. The different cutting portion on the hot knife that this application had can cut out the circular arc turning of adaptation in the piece corner that washes dishes on the pyrocondensation membrane according to the shape of the piece that washes dishes for pyrocondensation membrane can evenly shrink after the heat dries by the fire, is difficult to produce sharp-pointed arch in the corner of the piece that washes dishes, thereby reaches and alleviates the piece extranal packing that washes dishes and press against the effect of feeling.

Description

Hot cutter and hot cutting device using same

Technical Field

The application relates to the field of packaging equipment, in particular to a hot cutter and a hot cutting device using the same.

Background

With the development of technology, scientific and technological products are more and more convenient for people to eat clothes and live, and in the field of eating, people invent automatic dish washers in order to solve the problem that dishes need to be washed after meals. When the dishwasher is used, in order to control the addition amount of the detergent, the market has also provided the dish washing block for being matched with the dishwasher.

The dishwashing block 8 is a solid detergent made by compressing powder, for example, as shown in fig. 9, in order to reduce the breakage of the dishwashing block 8, a plastic film is wrapped outside the dishwashing block 8. To the plastic film that the piece 8 used that washes the dishes, generally adopt pyrocondensation nature material to make, earlier wash the dishes piece 8 earlier and be drawn into in the pyrocondensation membrane promptly, then cut out the region that adapts to 8 sizes of the piece that washes the dishes by the earnestly machine to seal the pyrocondensation membrane at the in-process that cuts, carry out the stoving with hot-blast to the pyrocondensation membrane at last, so that the piece 8 that washes the dishes is wrapped up in to the shrink of pyrocondensation membrane, and then reach the packing effect.

To the above-mentioned correlation technique, for the dish-washing block 8, in order to further reduce the cracked condition of colliding with, the corner of most dish-washing blocks 8 is made into arc, and the cutter 9 of earnestly cutting machine all is shown as being straight sword form in fig. 10 under general circumstances, consequently after this kind of cutter 9 cuts, the pyrocondensation membrane is the quadrangle, and the pyrocondensation membrane remains more at the arc corner of dish-washing block 8 this moment, after the process is dried by the fire, can lead to the corner of packaging film to produce the arch 81 as shown in fig. 9 to lead to the user to have stronger and press the feeling in the in-process of taking dish-washing block 8.

Disclosure of Invention

In order to alleviate the problem of the corner bulge of the packaging film, the first purpose of the application is to provide a hot cutting knife.

The application provides a hot cutter adopts following technical scheme:

the utility model provides a hot cutter, includes the cutter body, be provided with on the cutter body and be used for making the pyrocondensation membrane produce the different cutting portion of circular arc transition at the piece edge angle that washes the dishes, the junction between different cutting portion and the cutter body forms the circle and cuts the turning.

Through adopting above-mentioned technical scheme, because the junction between heterotypic portion and the cutter body is the circular arc transition, consequently the hot-cutting knife is cutting the in-process to the pyrocondensation membrane, can cut out the circular arc corner the same with the piece that washes the dishes on the pyrocondensation membrane, each part can reach the same shrinkage factor like this in hot-blast toasting of pyrocondensation membrane, is difficult to produce the arch in the corner of the piece that washes the dishes to reduce the user and handle with the armful in the piece in-process of washing the dishes taking.

Preferably, at least two groups of different cutting parts are arranged on the cutter body, and the lengths of the two groups of different cutting parts extend towards the opposite side.

Through adopting above-mentioned technical scheme, set up two sets of different cutting portions backs on same cutter body, the hot knife can cut off the junction between two adjacent dishes pieces through once cutting to all form the circular arc turning on making two heat shrinkage films that wash dishes the piece, thereby reach the purpose that improves hot knife cutting efficiency.

Preferably, the shapes of the cutting edges formed by the two different cutting parts on the same cutter body are complementary, and the combined shape of the two different cutting parts can be any one of a rectangle, a triangle, a circle or a heart.

The shape of the piece that washes the dishes has a great variety, including the rectangle, it is circular, it is trapezoidal, triangle-shaped, heart shape and petal shape etc, through adopting above-mentioned technical scheme, set up two sets of different cutting portions on same cutter body into the shape and supply the back each other, make the hot knife at the in-process that cuts, can cut out one of them part of the block form that washes the dishes respectively at the afterbody of the preceding block that washes the dishes and the front portion of the back block that washes the dishes, like this when the block that washes the dishes is carried forward, after being cut by the hot knife once more, can cut off a block form and the block assorted region that washes the dishes on the pyrocondensation membrane, thereby make the pyrocondensation membrane be difficult to more at the in-process that dries by the heat and produce protrudingly at the corner of the block that washes the dishes.

In order to alleviate the problem that the heat shrinkage film produces the arch at the dish washing piece corner, the second object of this application is to provide a hot cutting device.

The application provides a hot cutting device adopts following technical scheme:

a hot cutting device, comprising a cutting roller for cutting a heat shrinkable film and a flat roller for cooperating with the cutting roller, the flat roller being mounted with the hot cutter of any one of claims 1 to 3, the cutting roller being mounted with a flat pressing blade for pressing the hot cutter against each other to cut the heat shrinkable film.

Through adopting above-mentioned technical scheme, cut roller and plain roller and extrude each other, and rotate in opposite directions, the pyrocondensation membrane conveys between roller and plain roller cutting, then the flat pressing knife of hot-cutting sword can be at the roller of cutting and the plain roller pivoted in opposite directions in-process, extrude the cutting to the pyrocondensation membrane, because the blade shape of hot-cutting sword and the piece looks adaptation that washes dishes, consequently the pyrocondensation membrane can produce the circular arc transition at the corner of the piece that washes the dishes after cutting, make the pyrocondensation membrane be difficult to produce sharp-pointed arch after the heat is dried, thereby reach and alleviate the piece packaging film that washes the dishes and press the purpose of feeling.

Preferably, the hot cutter is installed on the cutting roller by adopting a connecting mechanism, the connecting mechanism comprises a vertical block which is arranged on the surface of the cutting roller and distributed around the cutting roller and an insert block which is arranged on the hot cutter, and the vertical block is provided with a slot for embedding the insert block and a locking mechanism for fixing the hot cutter and the vertical block.

Through adopting above-mentioned technical scheme, during the installation, the slot on the upright piece is aimed at to the inserted block on the hot knife, lets the inserted block embedding slot, then with the help of locking mechanical system fixed hot knife can, upright piece can play the effect of preliminary location to the inserted block, makes things convenient for hot knife and the installation between the roller of cutting, and locking mechanical system then can be fixed hot knife and roller of cutting, restriction hot knife is at the removal on the roller of cutting to the messenger cuts the roller and can cut thermal shrinkage film at the pivoted in-process.

Preferably, the vertical block is located on the side wall in the slot and is provided with an anti-falling groove, the length direction of the anti-falling groove is perpendicular to the depth direction of the slot, and the insertion block is provided with an anti-falling strip used for being matched with the anti-falling groove.

Through adopting above-mentioned technical scheme, after setting up anticreep strip and anticreep groove, after the hot knife inserts on the founding piece, the cooperation in anticreep strip and anticreep groove can be to the hot-cutting when forming the restraint, and the motion of restriction hot knife along slot depth direction is ascending to make the connection between hot knife and the cutting roller more stable.

Preferably, locking mechanical system including offer on founding the piece lateral wall and with the slot be linked together wear the fore shaft, articulate locking block on founding the piece, set up between locking block and founding the piece and be used for ordering about the locking end orientation of locking block keep away from slot one side pivoted resilience piece, set up the locking groove on the inserted block of hot knife, offer the dress piece groove that is used for supplying the locking block to pack into on the lateral wall of founding the piece, it is located the dress piece inslot to wear the fore shaft, an organic whole is formed with and is used for and locks the locking part of groove formation grafting complex, and is provided with on founding the piece and is used for ordering about the locking block orientation and wears the drive assembly of the motion in the fore shaft so that the locking part embedding locking groove.

Through adopting above-mentioned technical scheme, when needs are fixed hot cutter and cut the roller, it is deep to wear the locking mouth with the help of drive assembly orders about the locking end orientation of locking block, and the locking portion on the locking block passes behind the locking mouth, imbeds the locking inslot on the inserted block, and locking block and anticreep strip mutually support this moment, retrain the horizontal and longitudinal motion to hot cutter to the realization is to the locking of hot cutter and cut the roller.

Preferably, drive assembly including set up on the piece of standing and with dress piece groove cross intercommunication wear to locate the downthehole heating rod of pole, wear to locate, the heating rod contains drive section and installation section, the diameter of drive section is greater than the installation section, is the scarf transition between drive section and the installation section, and the drive section is inconsistent with the surface of locking part one side back to the locking piece.

Through adopting above-mentioned technical scheme, the heating rod has two effects here, and first effect is to heat the piece to give hot-cutting knife with the help of founding the piece with the heat transfer, make hot-cutting knife in the in-process of cutting the pyrocondensation membrane, can carry out the hot melt to the pyrocondensation membrane, realize the automation of pyrocondensation membrane and seal. The second function of the heating rod is to push the locking block through the driving section on the heating rod to enable the locking block and the insertion block to be inserted, specifically, in the process that the heating rod is installed in the rod penetrating hole on the vertical block, the installation section of the heating rod goes beyond the locking block, then in the process that the heating rod continues to go deep, the locking block is in contact with a wedge surface in transition between the installation section and the driving section on the heating rod and moves to the driving section along the wedge surface, and due to the fact that the diameter of the driving section is large, the locking rod can be pushed in the process that the heating rod goes deep into the rod penetrating hole to drive the locking end of the locking block to rotate towards one side of the lock penetrating opening, so that the locking part on the locking block is embedded into the locking groove on the insertion block, and the hot cutter and the cutting roller are fixed; and when hot-cutting knife needs to be changed, only need with the heating rod from the downthehole taking out of pole of wearing on founding the piece, kick-back piece just can order about the locking piece and rotate towards the one side of keeping away from wearing the fore shaft, unblock hot-cutting knife and the connection between founding the piece, the automatic unblock that hot-cutting knife realized for following the heating rod extraction process this moment, consequently it is more convenient when changing hot-cutting knife.

Preferably, one end of the locking block, which is far away from the locking part and faces one side of the through locking opening, is provided with a resetting unfilled corner for providing a moving space for the locking block and the insertion block to be disengaged and embedded.

Through adopting above-mentioned technical scheme, the unfilled corner that resets can produce the clearance between the tank bottom in locking piece and dress piece groove to make the locking piece when needs carry out the unblock to the hot knife, can make it have enough to drive the activity space that the sticking department deviates from locking inslot, thereby make the hot knife tear open and trade.

Preferably, the rebounding piece can be any one of an elastic piece or a torsion spring, a rebounding groove for the rebounding piece to be installed is formed in the locking block, when the rebounding piece is the torsion spring, the torsion spring is sleeved on a rotating shaft of the locking block, one end of the torsion spring abuts against the groove bottom of the block installing groove, and the other end of the torsion spring abuts against the inner wall of the rebounding groove to push the locking end of the locking block to rotate towards one side far away from the lock penetrating opening; when the rebounding piece is a spring sheet, one end of the spring sheet is fixed on the inner wall of the rebounding groove, and the other end of the spring sheet is bent and tightly abutted against the groove bottom of the block accommodating groove so as to push the locking end of the locking block to rotate towards one side far away from the lock penetrating opening.

Through adopting above-mentioned technical scheme, the main objective that resilience piece applied here can be taken out the back at the heating rod, realizes the locking piece to the automatic unblock of hot-cutting knife, and torsional spring or shell fragment, makes simply, low cost, and can deposit the potential energy through warping to reach the promotion to the locking piece after losing the constraint, consequently can realize the restoration of locking piece well.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the special cutting part on the hot cutter can cut arc corners adaptive to the corners of the dish washing block on the heat-shrinkable film according to the shape of the dish washing block, so that the heat-shrinkable film can be uniformly shrunk after being heated, and sharp bulges are not easy to generate at the corners of the dish washing block, thereby achieving the effect of relieving the damage of the outer package of the dish washing block to hand feeling;

2. the hot cutter with the different cutting parts in various shapes can be adapted according to the shape of the dish washing block to be packaged, so that the cut shape of the heat-shrinkable film is closer to the shape of the dish washing block, and the heat-shrinkable film is not easy to generate sharp bulges at the corners of the dish washing block after being heated and shrunk;

3. the cutting roller in the hot cutting device can be used for installing the heat supply cutter, and in the process that the cutting roller and the flat roller rotate oppositely, the heat supply cutter is driven to roll and cut the heat shrinkage film, and the heat shrinkage film can be continuously cut along with the continuous rotation of the cutting roller and the flat roller, so that the cutting operation of the hot cutting device can be continuously carried out.

Drawings

FIG. 1 is an overall block diagram of a hot cutting tool having rounded rectangular cutting edges as disclosed herein;

FIG. 2 is an overall block diagram of the disclosed hot knife with triangular cutting edges;

FIG. 3 is an overall block diagram of the hot knife disclosed in the present application with a rounded cutting edge;

FIG. 4 is an overall block diagram of the hot knife disclosed in the present application with a heart-shaped cutting edge;

FIG. 5 is an overall block diagram of the hot knife disclosed in the present application with a star-shaped cutting edge;

FIG. 6 is a schematic view of the overall construction of the hot cutting apparatus disclosed herein;

FIG. 7 is an exploded view of the hot cutting apparatus disclosed herein;

FIG. 8 is an enlarged partial view at A of FIG. 7;

FIG. 9 is a schematic diagram showing the wrapping state of the heat-shrinkable film on the dish-washing block after being cut by the common cutter;

fig. 10 is a schematic view showing a structure of a hot cutting apparatus of a general straight-blade type cutter.

Description of reference numerals: 1. a cutter body; 2. a differential cutting part; 21. cutting corners in a circle; 3. cutting rollers; 4. a flat roll; 41. a flat pressing knife; 5. a connecting mechanism; 51. erecting a block; 511. a slot; 512. a drop-proof groove; 513. a block installing groove; 52. inserting a block; 521. anti-drop strips; 6. a locking mechanism; 61. penetrating a lock opening; 62. a locking block; 621. a locking portion; 622. a limiting groove; 623. mounting grooves; 63. a resilient member; 64. a locking groove; 7. a drive assembly; 71. a rod penetrating hole; 72. a heating rod; 721. a drive section; 722. an installation section; 723. a limiting ring; 8. a dish washing block; 81. a protrusion; 9. and (4) a cutter.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

The embodiment of the application discloses hot cutter, refer to fig. 1, including cutter body 1 with set up the abnormal cutting portion 2 on cutter body 1, specific, the cross section of cutter body 1 becomes circular-arcly, and the cutting edge part of cutter body 1 is located cutter body 1 and is the surface of evagination one side. The different cutting portion 2 is integrally arranged on the cutter body 1 and is connected with the blade to serve as a part of the blade, and specifically, the different cutting portion 2 forms a circular cutting corner 21 for enabling the cutter body 1 to generate circular arc transition at the corner of the heat shrinkage film at the blade part of the cutter body 1.

In order to meet the cutting requirement of the assembly line, the different cutting portions 2 on each cutter body 1 are provided with a plurality of groups, specifically, two groups are provided in the embodiment, the length extending directions of the two groups of different cutting portions 2 face opposite sides, and the shapes of the two groups of different cutting portions 2 on the same cutter body 1 after being spliced and combined are complementary to each other.

The specific shape of the two different cutting portions 2 of the same cutter body 1 after being spliced together is determined according to the shape of the dish washing block 8, and specifically, the different shapes include a rounded rectangle (see fig. 1), a triangle (see fig. 2), a circle (see fig. 3), a rectangle (similar to fig. 1, except that the corner is a right angle, which is not specifically shown in the figure), a trapezoid (not shown in the figure), a heart (see fig. 4), a star (see fig. 5), and the like.

In order to more clearly illustrate how the hot cutter specifically cuts the heat shrinkable film, the present application further provides a hot cutting device, referring to fig. 6, the hot cutting device includes a cutting roller 3, a flat roller 4, the above hot cutter and a flat pressing cutter 41, the cutting roller 3 and the flat roller 4 are both in a circular roller shape, the flat pressing cutter 41 is in a fan-shaped block shape, the convex surface of the flat pressing cutter is used for contacting with the cutting edge of the hot cutter to realize the extrusion cutting of the heat shrinkable film, and the connecting mechanisms 5 are respectively arranged on the cutting roller 3 and the flat roller 4 to realize the connection between the cutting roller 3 and the hot cutter, between the flat roller 4 and the flat pressing cutter 41.

The installation manner of the flat pressing knife 41 on the flat roller 4 is similar to the installation manner of the hot cutting knife on the cutting roller 3, specifically, taking the cutting roller 3 as an example, referring to fig. 7 and 8, the connecting mechanism 5 comprises an upright block 51 and an insert block 52, the upright block 51 is fixed on the circumferential surface of the cutting roller 3 and distributed around the cutting roller 3, a slot 511 is arranged on the upright block 51 along the axial direction of the cutting roller 3, and a drop-proof groove 512 parallel or perpendicular to the axial direction of the cutting roller 3 is arranged on the inner wall of the slot 511. The insert 52 is integrally arranged on the cutter body 1 and is located on one side of the cutter body 1 opposite to the cutting edge, and is in a shape formed by combining the slot 511 and the anti-falling groove 512, correspondingly, the anti-falling strip 521 is integrally arranged on the side wall of the insert 52, so that after the insert 52 is in insertion fit with the slot 511 on the vertical block 51, the insert 52 can be constrained along the movement of the cutting roller 3 in the axial direction or the radial direction, and the connection between the hot cutter and the cutting roller 3 is more stable.

In order to fix the hot cutter and the cutting roller 3, a locking mechanism 6 is arranged on the vertical block 51, specifically, the locking mechanism 6 comprises a lock penetrating opening 61, a locking block 62, a rebound piece 63 and a locking groove 64, and the lock penetrating opening 61 is opened on the side wall of the vertical block 51 and is communicated with the slot 511. For the installation of convenient locking piece 62, offer on the lateral wall of founding piece 51 with wear the locking mouth 61 concentric and the size is greater than the dress piece groove 513 of wearing locking mouth 61, dress piece groove 513 is blind groove, locking piece 62 hinges on founding piece 51, and is located dress piece groove 513. The locking part 621 is integrally arranged at the locking end of the locking block 62 and on one side facing the through locking opening 61, the locking groove 64 is arranged on the inserting block 52 and corresponds to the position of the through locking opening 61, so that when the locking end of the locking block 62 rotates towards the through locking opening 61, the locking part 621 can penetrate through the through locking opening 61 to be embedded into the locking groove 64 on the inserting block 52, and therefore the hot cutter and the cutting roller 3 are fixed.

In order to facilitate the engagement between the locking portion 621 and the locking groove 64, the upright block 51 is provided with a driving assembly 7, specifically, the driving assembly 7 includes a rod penetrating hole 71 and a heating rod 72, the rod penetrating hole 71 is opened on the end surface of the upright block 51, the depth direction of the rod penetrating hole 71 is parallel to the axial direction of the cutting roller 3, the rod penetrating hole 71 is communicated with the block installing groove 513, and the rod penetrating hole 71 and the locking penetrating opening 61 are respectively positioned on two sides of the locking block 62.

The heating rod 72 comprises two sections with a larger diameter and a smaller diameter, wherein the section with the larger diameter is the driving section 721, the section with the smaller diameter is the mounting section 722, the driving section 721 and the mounting section 722 are in wedge surface transition, and the heating rod 72 is inserted into the rod through hole 71, so that the rod through hole 71 is divided into two sections with the block installing groove 513 as a boundary, and the diameter of one section is larger than that of the other section. During the process of inserting the heating rod 72 into the rod penetrating hole 71, the mounting section 722 of the heating rod 72, due to the small diameter, will pass over the locking block 62 until the locking block 62 and the wedge surface on the heating rod 72 come into contact and move along the wedge surface onto the driving section 721, at this time, the driving section 721 of the heating rod 72 will push the locking block 62 to rotate, so that the locking section 621 passes through the through-locking notch 61 and is embedded into the locking groove 64 on the insert block 52, thereby achieving the fixation between the hot cutter and the cutting roller 3, and as long as the heating rod 72 is not pulled out from the upright block 51, the locking block 62 will not be disengaged from the insert block 52, thereby achieving the automatic locking of the hot cutter during the process of installing the heating rod 72.

In order to limit the heating rod 72 from coming out of the rod penetrating hole 71, a protruding limiting ring 723 is integrally arranged on the driving section 721 of the heating rod 72, correspondingly, a limiting groove 622 for embedding the limiting ring 723 is formed in the side wall of the locking block 62, when the two are mutually embedded, the locking block 62 can preliminarily limit the heating rod 72 and limit the movement of the heating rod 72 along the depth direction of the rod penetrating hole 71, and therefore the hot cutter is not easy to fall off from the vertical block 51. In order to enhance the restriction effect, a fastener (not shown) such as a screw may be added to the standing block 51 to reinforce the heating plate.

The main function of the resilient member 63 is to automatically drive the locking portion 621 of the locking block 62 to be disengaged from the locking groove 64 of the insertion block 52 when the heating rod 72 is pulled out of the rod-passing hole 71, so as to facilitate the replacement of the hot knife. Therefore, the resilient member 63 can be selected from a resilient piece or a torsion spring, and specifically, to facilitate the installation of the resilient member 63, an installation groove 623 is formed at a position between the locking portion 621 and the rotation axis of the driving block on the surface of the driving block facing the side through the locking notch 61, and the resilient member 63 is fixed to the locking block 62 and is located in the installation groove 623.

Specifically, when resilience piece 63 is the torsional spring, the torsional spring cover is located on the axis of rotation of locking block 62, and the one end of torsional spring supports tightly in the tank bottom of dress piece groove 513, and the other end supports tightly and rotates in order to promote the locking end orientation of locking block 62 to keep away from the one side of wearing fore shaft 61 on the inner wall in resilience groove. When the resilience piece 63 is an elastic sheet, one end of the elastic sheet is fixed on the inner wall of the resilience groove, and the other end of the elastic sheet is bent and tightly abutted against the groove bottom of the block accommodating groove 513 to push the locking end of the locking block 62 to rotate towards the side far away from the lock passing opening 61, so that after the heating rod 72 is pulled out, the locking block 62 which is out of constraint can take the locking part 621 to automatically disengage from the locking groove 64, and the automatic unlocking of the hot cutter is realized.

In order to ensure that the locking block 62 has enough space for retreating under the pushing of the resilient member 63, a reset notch is formed at one end of the locking block 62 away from the locking portion 621 and toward the side of the lock passing opening 61, and the reset notch forms a gap between the locking block 62 and the groove bottom of the block installing groove 513 at this time, so that the rotation of the locking block 62 is not easily hindered.

The hot knife and the hot cutting device applying the hot knife in the embodiment of the application have the following implementation principles: the piece 8 that washes dishes places on banding pyrocondensation membrane, and follow pyrocondensation membrane and carry forward, at the in-process of carrying, the both sides of pyrocondensation membrane are rolled over and are sealed and form tubular structure, tubular structure's pyrocondensation membrane area washes dishes piece 8 and wears to locate between cutting roller 3 and the plain barreled roll 4, along with cutting roller 3 and plain barreled roll 4's rotation in opposite directions, the position of heat-cutting sword 41 between two adjacent pieces 8 that wash dishes extrudees to the pyrocondensation membrane, and cut off, make the piece 8 that washes dishes form independent package, because 2 adaptations of the different portion of cutting on the heat-cutting sword in the corner shape of the piece 8 that washes dishes, consequently when the heat dries by the fire, the pyrocondensation membrane can evenly shrink, and fully laminate the piece 8 that washes dishes, be difficult to produce sharp-pointed protrusion 81 in the corner of the piece 8 that washes dishes, thereby the realization is alleviated and the effect that 8 extranal packing of washing dishes pressed against the hand.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A hot knife, comprising: including cutter body (1), be provided with on cutter body (1) and be used for making pyrocondensation membrane produce heterotypic portion (2) of circular arc transition at the piece (8) corner that washes the dishes, the junction between heterotypic portion (2) and cutter body (1) forms circle cutting corner (21).

2. The hot knife of claim 1, wherein: the special cutting parts (2) on the cutter body (1) are at least provided with two groups, and the lengths of the two groups of special cutting parts (2) extend towards the opposite side.

3. The hot knife of claim 2, wherein: the shapes of cutting edges formed by the two different cutting parts (2) on the same cutter body (1) are mutually complementary, and the combined shape of the two different cutting parts (2) can be any one of a rectangle, a triangle, a circle or a heart.

4. A hot cutting apparatus, characterized by: the cutting device comprises a cutting roller (3) used for cutting the heat shrinkable film and a flat roller (4) used for being matched with the cutting roller (3), wherein the flat roller (4) is provided with a hot cutting knife (9) as claimed in any one of claims 1 to 3, and the cutting roller (3) is provided with a flat pressing knife (41) which is used for being mutually pressed with the hot cutting knife (9) to cut the heat shrinkable film.

5. The hot cutting apparatus of claim 4, wherein: the hot cutter (9) is installed on the cutting roller (3) through the connecting mechanism (5), the connecting mechanism (5) comprises a vertical block (51) which is arranged on the surface of the cutting roller (3) and distributed around the cutting roller (3) and an insert block (52) which is arranged on the hot cutter (9), wherein the vertical block (51) is provided with a slot (511) for embedding the insert block (52) and a locking mechanism (6) for fixing the hot cutter (9) and the vertical block (51).

6. The hot cutting apparatus of claim 5, wherein: an anti-falling groove (512) is formed in the side wall, located in the slot (511), of the vertical block (51), the length direction of the anti-falling groove (512) is perpendicular to the depth direction of the slot (511), and an anti-falling strip (521) matched with the anti-falling groove (512) is arranged on the insertion block (52).

7. The hot-cutting apparatus according to any one of claims 5 or 6, wherein: the locking mechanism (6) comprises a through locking opening (61) which is arranged on the side wall of the vertical block (51) and communicated with the slot (511), a locking block (62) which is hinged on the vertical block (51), a rebound piece (63) which is arranged between the locking block (62) and the vertical block (51) and is used for driving the locking end of the locking block (62) to rotate towards one side far away from the slot (511), and a locking slot (64) which is arranged on the insertion block (52) of the hot cutter (9), a block installing groove (513) for installing the locking block (62) is arranged on the side wall of the vertical block (51), the lock penetrating opening (61) is positioned in the block mounting groove (513), a locking part (621) which is used for being in plug-in fit with the locking groove (64) is integrally formed on the locking block (62), and a driving component (7) for driving the locking block (62) to move towards the inside of the lock penetrating opening (61) so as to enable the locking part (621) to be embedded into the locking groove (64) is arranged on the upright block (51).

8. The hot cutting apparatus of claim 7, wherein: drive assembly (7) including set up on founding piece (51) and with wear through-rod hole (71) of piece groove (513) cross intercommunication, wear to locate heating rod (72) in through-rod hole (71), heating rod (72) contain drive section (721) and erection section (722), the diameter of drive section (721) is greater than erection section (722), is the scarf transition between drive section (721) and erection section (722), and drive section (721) and locking piece (62) are inconsistent with the surface of locking portion (621) one side dorsad.

9. The hot cutting apparatus of claim 9, wherein: one end of the locking block (62) far away from the locking part (621) and one side facing the lock penetrating opening (61) are provided with reset unfilled corners for providing a moving space for the locking block (62) and the inserting block (52) to be disengaged and embedded.

10. The hot cutting apparatus of claim 7, wherein: the rebounding piece (63) can be any one of an elastic sheet or a torsion spring, a rebounding groove for the rebounding piece (63) to be installed is formed in the locking block (62), when the rebounding piece (63) is the torsion spring, the torsion spring is sleeved on a rotating shaft of the locking block (62), one end of the torsion spring abuts against the bottom of the block installing groove (513), and the other end of the torsion spring abuts against the inner wall of the rebounding groove to push the locking end of the locking block (62) to rotate towards one side far away from the lock penetrating opening (61); when the rebound piece (63) is a spring plate, one end of the spring plate is fixed on the inner wall of the rebound groove, and the other end of the spring plate is bent and tightly abutted against the groove bottom of the block accommodating groove (513) so as to push the locking end of the locking block (62) to rotate towards one side far away from the through locking opening (61).