CN210387220U

CN210387220U - Food can body edge rolling and ribbing forming die

Info

Publication number: CN210387220U
Application number: CN201921045397.0U
Authority: CN
Inventors: 黄焱发
Original assignee: Dongguan Tinshine Tin Box Co ltd
Current assignee: Dongguan Tinshine Tin Box Co ltd
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-24
Anticipated expiration: 2029-07-05

Abstract

The utility model belongs to the technical field of food can production dies, in particular to a food can body edge rolling and rib pressing forming die, which comprises a lower die component and an upper die component, wherein the lower die component comprises a lower die plate, a forming outer die, a punching core and a rib line expansion core die, a can body cavity is formed in the forming outer die, the inner wall of the can body cavity is provided with a rib line groove, the punching core is arranged on the lower die plate and is positioned at the bottom of the can body cavity, the rib line expansion core die is arranged on the punching core, the outer wall of the rib line expansion core die is provided with a rib line convex strip corresponding to the rib line groove, and the top of the rib line expansion core die is provided with a plurality; the upper die assembly comprises an upper die plate, an upper die and a plurality of punching cores, the upper die is installed on the upper die plate, the punching cores are installed on the upper die, when the punching cores are inserted into an upper punching core cavity, the rib line expansion core die is forced to disperse all around, rib line convex strips stretch into rib line grooves, and the bottom of the upper die plate is also provided with a rounding groove used for abutting against the mouth of the can body to enable the can body to be rounded. The utility model discloses one set of mould can process out muscle line and edge rolling to food can body simultaneously.

Description

Food can body edge rolling and ribbing forming die

Technical Field

The utility model belongs to the technical field of food jar production mould, especially, relate to a food jar can body edge rolling and rib pressing forming die.

Background

As shown in fig. 1, in the production and forming process of the can body of the existing metal food can, it is necessary to round the opening of the can body and press a rib on the can body near the opening, so that the opening of the can body is smooth by the round, and the can cover is pressed on the can body by the rib. Among the prior art, to the shaping at these two positions of the body of food jar, need twice process at least to process to every process all needs one set of forming die, so just need more forming die to produce, the increase of mould quantity must lead to the production process complicated, and then leads to production efficiency low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a food can body edge rolling and ribbing forming die aims at solving prior art and carries out the edge rolling and ribbing to food can body and need two sets of moulds at least to carry out the technical problem of operating.

In order to achieve the above object, an embodiment of the utility model provides a pair of food can body edge rolling and ribbing forming die, include:

the lower die assembly comprises a lower die plate, a forming outer die, a punching core and a rib line expansion core die, wherein the forming outer die is installed on the lower die plate, a can body cavity matched with the appearance of a food can body is formed in the forming outer die, rib line grooves are formed in the inner wall of the can body cavity, the punching core is installed on the lower die plate and located at the bottom of the can body cavity, the rib line expansion core die is installed on the punching core and located in the can body cavity, rib line protruding strips corresponding to the rib line grooves in position are arranged on the outer wall of the rib line expansion core die, and a plurality of upper punch core cavities are formed in the top of the rib line expansion core die;

go up the mould subassembly, it includes cope match-plate pattern, goes up mould and a plurality of towards the core to go up the mould install in the bottom of cope match-plate pattern is located the top of muscle line bloated mandrel, towards the core install in the bottom of going up the mould and with go up the positive correspondence of core chamber, just it inserts to correspond to towards the core can force when going up towards the core intracavity muscle line bloated mandrel toward scattering all around and make muscle line sand grip stretches into in the muscle line recess, the bottom of cope match-plate pattern still is provided with the edge rolling recess that is used for supporting the oral area of pressing food can body so that its edge rolling.

Optionally, the rib line core expanding die comprises a first core expanding module, a second core expanding module, a third core expanding module and a fourth core expanding module, the first core expanding module, the second core expanding module, the third core expanding module and the fourth core expanding module are sequentially arranged in a surrounding manner, adjacent core expanding modules are arranged between the first core expanding module and the second core expanding module, adjacent core expanding modules are arranged between the second core expanding module and the third core expanding module, adjacent core expanding modules are arranged between the third core expanding module and the fourth core expanding module, and adjacent core expanding modules are arranged between the fourth core expanding module and the first core expanding module, the rib line convex strips are formed on the outer walls of the first core expanding module, the second core expanding module, the third core expanding module and the fourth core expanding module, and the upper punch core cavity is formed at least on the outer walls of the first core expanding module, the second core expanding module, the third core expanding module and the fourth core expanding module, The third core expansion module and the fourth core expansion module are in butt joint.

Optionally, three upper core chambers are provided, and the three upper core chambers are arranged at intervals along the length direction, one of the upper core chambers is formed at a joint of the first core expansion module, the second core expansion module, the third core expansion module and the fourth core expansion module, and the other two upper core chambers are formed at a joint of the second core expansion module and the third core expansion module and a joint of the fourth core expansion module and the first core expansion module, respectively.

Optionally, an upper tension spring groove is formed in the top of the butt joint of the first core expansion module and the second core expansion module, the top of the butt joint of the second core expansion module and the third core expansion module, the top of the butt joint of the third core expansion module and the fourth core expansion module, and the top of the butt joint of the fourth core expansion module and the first core expansion module, and each upper tension spring is arranged in each upper tension spring groove.

Optionally, towards body core including being located first core piece and the second core piece that is located the second core piece below of bloating the core piece and is located the third core piece and the fourth core piece that expands, first core piece with be connected with down the extension spring between the core piece, just first core piece with the butt joint department of second core piece is provided with and is located in the middle the lower core chamber that upper core chamber position corresponds, the cross sectional area in lower core chamber is less than rather than the position correspondence the cross sectional area in upper core chamber.

Optionally, two lower spring grooves respectively located at two sides of the lower core cavity in the length direction are arranged at the top of the joint of the first core block and the second core block, and the lower tension springs are arranged in the lower spring grooves.

Optionally, the food can body edge rolling and beading forming die further comprises:

the bottom plate is positioned below the lower template;

the sliding structure is connected between the bottom plate and the lower template, so that the lower template can slide back and forth relative to the bottom plate.

Optionally, the sliding structure includes a push plate and two slide rails, two slide rails are all fixedly mounted on the bottom plate and are arranged at intervals, the push plate is arranged between the two slide rails, two side ends of the push plate are respectively in sliding fit with the two slide rails, and the lower template is fixedly mounted on the push plate.

Optionally, a position on the bottom plate near the rear end is provided with a limit plate for limiting the sliding stroke of the push plate.

Optionally, a handle is arranged at the front end of the lower template.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in food can body edge rolling and the beading forming die have one of following technological effect at least: when the food can body is used, the food can body is placed in the can body cavity and positioned on the inner side of the forming outer die and the outer sides of the body punching core and the rib line expansion core die, then the upper die plate is driven to descend, the upper die plate drives the upper die and each punching core to descend along with the upper die plate, when the punching core is inserted into the upper punching core cavity arranged at the top of the rib line expansion core die corresponding to the punching core, the punching core can force the rib line expansion core die to disperse all around, and because the rib line convex strips corresponding to the rib line grooves arranged on the inner wall of the can body cavity are arranged on the outer wall of the rib line expansion core die, the rib line convex strips can extend into the rib line grooves when moving all around, so that the can body positioned between the rib line convex strips and the rib line grooves is punched to form rib lines; along with the continuous decline of cope match-plate pattern, the mouth part that supports to press food can body can be aimed at to the edge rolling recess that the bottom of cope match-plate pattern set up to can make the mouth part of this food can body curl and form the edge rolling, like this, use one set of mould to realize promptly processing out muscle line and edge rolling to food can body.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is the embodiment of the utility model provides a food can body edge rolling and ribbing mold process out's the structure sketch map of the food can body.

Fig. 2 is the embodiment of the utility model provides a food can body edge rolling and rib pressing forming die's schematic structure.

Fig. 3 is a schematic structural view of the food can body rounding and beading mold shown in fig. 2 from another perspective.

Fig. 4 is a sectional view of the structure of the food can body edge rolling and rib pressing mold provided by the embodiment of the utility model.

Fig. 5 is an exploded schematic view of the food can body edge rolling and rib pressing forming die provided by the embodiment of the utility model.

Fig. 6 is a top view of the lower mold assembly of the food can body edge rolling and beading mold provided by the embodiment of the utility model.

Fig. 7 is an enlarged view of a portion of a structure at a in fig. 4.

Wherein, in the figures, the respective reference numerals:

10-lower template 20-forming external mold 30-punching core

31-first core block 32-second core block 40-rib line core expanding die

41-first core expansion module 42-second core expansion module 43-third core expansion module

44-fourth expansion core module 45-upper punch core cavity 46-upper tension spring groove

50-upper die plate 60-upper die 70-punching core

80-bottom plate 90-sliding structure 91-push plate

92-slide rail 100-lower die assembly 200-upper die assembly

300-can body 301-rib pressing line 302-rolling line

400-rib groove 500-rib convex strip.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-7 are exemplary and intended to be used to illustrate embodiments of the present invention, and should not be construed as limiting the invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 7, a food can body rolling and beading forming mold is provided, which comprises a lower mold assembly 100 and an upper mold assembly 200. The mold is suitable for processing a can body 300 of a metal food can, and a bead wire 301 and a curl wire 302 (as shown in fig. 1) are processed on the can body 300, and for example, a honeycomb food can having a substantially rectangular cross section can be processed. Specifically, the rib lines and the beads can be formed on the can body 300 of the food can by the cooperation of the lower and

upper die assemblies

100 and 200. The lower mold assembly 100 may be mounted on a base of the processing apparatus, and the upper mold assembly 200 may be connected to a driving source of the apparatus and may be driven to be raised or lowered with respect to the lower mold assembly 100 by the driving source.

Further, as shown in fig. 1 to 3, the lower die assembly 100 includes a lower die plate 10, an outer forming die 20, a body punching core 30, and a rib line expansion core die 40, where the outer forming die 20 may be an integral structure or a split connection structure. The lower plate 10 may be mounted to the base of the apparatus, and the lower plate 10 may be used to mount and secure other components of the lower die assembly 100. The forming external mold 20 is installed on the lower mold plate 10, in addition, a can body cavity matched with the shape of a food can body 300 is formed in the forming external mold 20, the can body cavity can contain the can body 300 of the food can so as to process the can body 300, a rib line groove 400 is formed in the inner wall of the can body cavity, the punching core 30 is installed on the lower mold plate 10 and is positioned at the bottom of the can body cavity, the punching core 30 is provided for installing the rib line expansion core mold 40, so that the rib line expansion core mold 40 can be installed on the punching core 30, the rib line is positioned in the can body cavity, meanwhile, the outer wall of the rib line expansion core mold 40 is provided with a rib line convex strip 500, the position of which corresponds to the rib line groove 400, the rib line convex strip 500 is used for abutting against the can body 300 so that the local position of the can body 300 is changed into an outward convex rib line in a shape matched with the rib line groove 400, the top of the rib line expansion core mold 40 is provided with a plurality of upper core punching cavities 45.

Further, as shown in fig. 1 to 3, the upper mold assembly 200 includes an upper mold plate 50, an upper mold 60 and a plurality of cores 70, the upper mold plate 50 is used for connecting with an output end of a driving source of the device, thus, the upper mold plate 50 can be controlled to be raised or lowered by the driving source, thus achieving the effect of controlling the entire upper mold assembly 200 to be raised or lowered, the upper die 60 is installed at the bottom of the upper die plate 50 and above the bead wire expansion die 40, the core 70 is installed at the bottom of the upper die 60 and corresponds to the upper core chamber 45, the punches 70 are arranged vertically downward, and when the punches 70 are inserted into the corresponding upper punch chambers 45, the punch core 70 can force the bead core expansion mold 40 to be scattered all around, so that the bead protrusions 500 are inserted into the bead grooves 400, the bottom of the upper template 50 is further provided with a rolling groove for pressing the mouth of the food can body 300 to roll the food can body. That is, when the upper mold plate 50 descends to a certain height, the edge of the mouth is forced to curl to form a curl by the rounding groove provided at the bottom of the upper mold plate 50 pressing against the mouth of the food can 300 in the can cavity.

The rolling and ribbing mold for food can body provided by the embodiment of the utility model is further explained below, when in use, the food can body 300 is placed in the can body cavity and positioned on the inner side of the outer forming mold 20 and on the outer side of the body punching core 30 and the rib line expanding core mold 40, then, the upper mold plate 50 is driven to descend, the upper mold plate 50 drives the upper mold 60 and each punch core 70 to descend along with the descending, when the punch core 70 is inserted into the upper punch core cavity 45 provided at the top of the rib line expansion core mold 40 corresponding to the position of the punch core 70, the punch core 70 can force the rib line expansion core mold 40 to be scattered all around, because the outer wall of the rib line expansion core mould 40 is provided with rib line convex strips 500 which correspond to the rib line grooves 400 arranged on the inner wall of the tank body cavity, thus, the rib protruding strips 500 can extend into the rib grooves 400 when moving around, and the can body 300 positioned between the rib protruding strips 500 and the rib grooves 400 is punched to form ribs; along with the continuous decline of cope match-plate pattern 50, the mouth portion that supports and press food can body 300 can be aimed at to the edge rolling recess that the bottom of cope match-plate pattern 50 set up to can make this food can body 300's mouth portion curl and form the edge rolling, like this, use one set of mould to realize promptly processing out muscle line and edge rolling to food can body 300.

In another embodiment of the present invention, as shown in fig. 5 to 6, the rib line expansion core mold 40 of the food can body rounding and ribbing mold provided includes a first expansion core module 41, a second expansion core module 42, a third expansion core module 43 and a fourth expansion core module 44, the first expansion core module 41, the second expansion core module 42, the third expansion core module 43 and the fourth expansion core module 44 are sequentially defined, for example, the first expansion core module 41, the second expansion core module 42, the third expansion core module 43 and the fourth expansion core module 44 are defined along a clockwise direction, and the first expansion core module 41, the second expansion core module 42, the third expansion core module 43 and the fourth expansion core module 44 are respectively located at a lower right corner, a lower left corner, an upper left corner and an upper right corner. The shape of the rib line core expanding die 40 formed by splicing the first core expanding module 41, the second core expanding module 42, the third core expanding module 43 and the fourth core expanding module 44 is matched with the inner cavity of the can body 300 of the food can.

Further, an upper tension spring is connected between the adjacent first core expansion module 41 and the second core expansion module 42, an upper tension spring is connected between the adjacent second core expansion module 42 and the third core expansion module 43, an upper tension spring is connected between the adjacent third core expansion module 43 and the fourth core expansion module 44, and an upper tension spring is connected between the adjacent fourth core expansion module 44 and the first core expansion module 41, which is not illustrated in the drawing. The upper tension spring is adopted to enable the adjacent core expansion mould blocks to be butted together through the elastic force of the upper tension spring, so that the four core expansion mould blocks can be butted together, and the formed rib line core expansion mould 40 and the inner wall of the cavity of the can body are ensured to directly have a gap for accommodating the can body 300 of the food can. Meanwhile, the structural design can ensure that the four core expansion modules can reset under the action of the elastic force of the tension spring once the punching core 70 is removed after the punching core 70 is inserted into the upper punching core cavity 45 to force the four core expansion modules to be scattered, so that the structural design is ingenious, and the processing of the can body 300 of the next food can be conveniently carried out.

Further, the rib protruding strip 500 is formed on the outer walls of the first core expansion module 41, the second core expansion module 42, the third core expansion module 43 and the fourth core expansion module 44, so that it can be ensured that the rib protruding strip 500 can punch a complete ring of pressing rib on the can body 300 of the food can. The upper core cavity 45 is formed at least at the joint of the first core expansion module 41, the second core expansion module 42, the third core expansion module 43 and the fourth core expansion module 44. Specifically, a notch is formed at each corner of the joint of the first core expansion module 41, the second core expansion module 42, the third core expansion module 43, and the fourth core expansion module 44, so that the four notches cooperate to define the upper core expansion cavity 45, and once the core punch 70 corresponding to the upper core expansion cavity 45 is inserted into and abutted against the inner wall of the notch at the corner of the first core expansion module 41, the second core expansion module 42, the third core expansion module 43, and the fourth core expansion module 44, the first core expansion module 41, the second core expansion module 42, the third core expansion module 43, and the fourth core expansion module 44 can be driven to spread around, thereby realizing the rib pressing of the body 300 of the food can.

In another embodiment of the present invention, as shown in fig. 1 and 6, the upper punch cavity 45 of the food can body rounding and beading forming die is provided with three, three upper punch cavities 45 are arranged at intervals along the length direction, that is, the cross section of the whole beading line expansion core (formed by the butt-joint cooperation of the first expansion core module 41, the second expansion core module 42, the third expansion core module 43 and the fourth expansion core module 44) is rectangular or substantially rectangular. One of the upper core cavities 45 is formed at the joint of the first core expansion module 41, the second core expansion module 42, the third core expansion module 43 and the fourth core expansion module 44, and the other two upper core cavities 45 are formed at the joint of the second core expansion module 42 and the third core expansion module 43 and the joint of the fourth core expansion module 44 and the first core expansion module 41 respectively. In this embodiment, it can be ensured that the rib line expansion cores with longer cross sections are inserted into the three upper punch core cavities 45 at the same time at the three punch cores 70, and are pressed against the expansion core blocks to disperse towards the periphery, so that even if part of the expansion core blocks are larger, enough punch cores 70 can touch the expansion core blocks to disperse towards the periphery, and further the rib line protruding strips 500 are matched with the rib line grooves 400 to realize rib line pressing.

In another embodiment of the present invention, as shown in fig. 1 and fig. 6, the top of the butt joint of the first core expansion module 41 and the second core expansion module 42, the top of the butt joint of the second core expansion module 42 and the third core expansion module 43, the top of the butt joint of the third core expansion module 43 and the fourth core expansion module 44, and the top of the butt joint of the fourth core expansion module 44 and the first core expansion module 41 of the food can body rolling and beading forming die are provided with upper tension spring grooves 46, and each of the upper tension springs is respectively disposed in each of the upper tension spring grooves 46. In this embodiment, each upper tension spring groove 46 is provided at the top position of the core expansion module, so that convenience in mounting the upper tension spring can be ensured, and unnecessary interference of the upper tension spring to each core expansion module can be avoided by mounting the upper tension spring in the groove of the recessed structure, so that each component can normally and stably operate.

Further, the upper tension spring groove 46 is formed in a long circular shape.

In another embodiment of the present invention, the body punching core 30 of the food can body rolling and ribbing mold provided comprises a first core block 31 located below the first core expansion module 41 and the second core expansion module 42, and a second core block 32 located below the third core expansion module 43 and the fourth core expansion module 44, wherein a lower tension spring (not shown) is connected between the first core block 31 and the core blocks, and the lower tension spring is arranged to ensure that the first core expansion module 41 and the second core expansion module 42 are always in butt joint and cooperate with each other, so that when the food can be dispersed by external force, once the external force is removed, the first core expansion module 41 and the second core expansion module 42 can be restored to their original states under the action of the lower tension spring. And a lower core cavity corresponding to the upper core cavity 45 in the middle is arranged at the joint of the first core block 31 and the second core block 32. The cross-sectional area of the lower core cavity is smaller than the cross-sectional area of the upper core cavity 45 corresponding to its location, which ensures that a core 70 that can be inserted into the lower core cavity can be inserted into the upper core cavity 45 without fail. In this embodiment, the punching core 70 is inserted into the upper punching core cavity 45 and is continuously increased along with the inserted depth, the punching core 70 enters the lower punching core cavity, and then the first core expansion module 41 and the second core expansion module 42 are dispersed, so that the first core expansion module 41 and the second core expansion module 42 are guaranteed to support the inner wall of the can body 300, so that the rib line pressing line is realized on the can body 300 of the food can by the cooperation of the rib line protruding strip 500 and the rib line groove 400.

In another embodiment of the present invention, the top of the butt joint of the first core block 31 and the second core block 32 of the food can body rounding and beading forming die provided by the present invention is provided with two lower tension spring grooves (not shown) respectively located on two sides of the length direction of the lower core cavity, and the lower tension springs are all arranged in the lower tension spring grooves. Specifically, the lower tension spring groove is arranged, so that the lower tension spring can be conveniently installed, and meanwhile, the interference of the installation of the lower tension spring on other parts is also avoided. Which is similar in design principle to the upper tension spring slot 46 and will not be described in detail herein.

In another embodiment of the present invention, as shown in fig. 4 to 5, the food can body rolling and ribbing mold further includes a bottom plate 80 and a sliding structure 90, wherein the bottom plate 80 is located below the lower mold plate 10; the sliding structure 90 is connected between the bottom plate 80 and the lower template 10, so that the lower template 10 can slide back and forth relative to the bottom plate 80. Specifically, the design of sliding structure 90 can make lower bolster 10 can be for the bottom plate 80 pulling, can realize moving whole lower mould assembly 100 like this through pulling lower bolster 10, so, can carry out the installation of the can body 300 of food can through moving lower mould assembly 100 to suitable position, can avoid like this that the staff is in the below of last mould assembly 200 when installing the can body 300 of food can, improves the security of installing the food can.

In another embodiment of the utility model, as shown in fig. 4-5, this food can body edge rolling and beading forming die that provides sliding structure 90 includes push pedal 91 and two slide rails 92, two the equal fixed mounting of slide rail 92 in on the bottom plate 80 and the interval sets up, push pedal 91 sets up in two between the slide rail 92, just push pedal 91's both sides end respectively with two slide rail 92 sliding fit, lower bolster 10 fixed mounting in on the push pedal 91. Specifically, the push plate 91 is in sliding fit with the two slide rails 92, so that the lower template 10 can be ensured to slide always by taking the two slide rails 92 as a guide, the moving route is constant, and the operation efficiency is improved.

In another embodiment of the present invention, as shown in fig. 1 to 5, the position of the bottom plate 80 near the rear end of the food can body rolling and beading mold is provided with a limiting plate (not shown) for limiting the sliding stroke of the push plate 91. Specifically, the setting of limiting plate can be used for blockking the removal stroke of push pedal 91, like this when promoting push pedal 91 forward and the butt on the limiting plate, can know push pedal 91 this moment and remove and target in place, so, whole lower mould subassembly 100's the position also portable suitable position can carry out operation on next step, easy operation is high-efficient.

In another embodiment of the present invention, as shown in fig. 1 to 5, a handle (not shown) is disposed at the front end of the lower mold plate 10 of the food can body rolling and ribbing mold. Specifically, the worker may facilitate pulling the lower die assembly 100 out from below the upper die assembly 200 or pushing the lower die assembly 100 to below the upper die assembly 200 by holding the handle.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a food can body edge rolling and beading forming die which characterized in that: the method comprises the following steps:

2. The food can body rounding and beading forming die of claim 1, wherein: the muscle line core expanding die comprises a first core expanding module, a second core expanding module, a third core expanding module and a fourth core expanding module, the first core expansion module, the second core expansion module, the third core expansion module and the fourth core expansion block are sequentially arranged in a surrounding manner, upper tension springs are respectively connected between the adjacent first core expansion module and the second core expansion block, between the adjacent second core expansion module and the third core expansion block, between the adjacent third core expansion module and the fourth core expansion block and between the adjacent fourth core expansion module and the first core expansion block, the rib line convex strips are formed on the outer walls of the first core expansion module, the second core expansion module, the third core expansion module and the fourth core expansion module, the upper punch core cavity is at least formed at the joint of the first core expansion module, the second core expansion module, the third core expansion module and the fourth core expansion module.

3. The food can body rounding and beading forming die of claim 2, wherein: the upper die core is provided with three upper die core cavities which are arranged at intervals along the length direction, one upper die core cavity is formed at the joint of the first core expansion module, the second core expansion module, the third core expansion module and the fourth core expansion module, and the other two upper die core cavities are formed at the joint of the second core expansion module and the third core expansion module and the joint of the fourth core expansion module and the first core expansion module respectively.

4. The food can body rounding and beading forming die of claim 2, wherein: the top of the butt joint of the first core expansion module and the second core expansion module, the top of the butt joint of the second core expansion module and the third core expansion module, the top of the butt joint of the third core expansion module and the fourth core expansion module and the top of the butt joint of the fourth core expansion module and the first core expansion module are provided with upper tension spring grooves, and the upper tension springs are respectively arranged in the upper tension spring grooves.

5. The food can body rounding and beading forming die of claim 2, wherein: towards body core including being located first core piece that expands core module with the second expands core piece below first core piece and be located the third and expand core module and the second core piece of fourth core piece below, first core piece with be connected with down the extension spring between the core piece, just first core piece with the butt joint department of second core piece is provided with and is located in the middle the lower core chamber that upper core chamber position corresponds, the cross sectional area in lower core chamber is less than rather than the position correspondence the cross sectional area in upper core chamber.

6. The food can body rounding and beading forming die of claim 5, wherein: the top of the butt joint of the first core block and the second core block is provided with two lower spring grooves which are respectively positioned at two sides of the lower core block cavity in the length direction, and lower tension springs are arranged in the lower spring grooves.

7. The food can body rounding and beading forming die according to any one of claims 1 to 6, wherein: further comprising:

the bottom plate is positioned below the lower template;

8. The food can body rounding and beading forming die of claim 7, wherein: the sliding structure comprises a push plate and two sliding rails, the two sliding rails are fixedly mounted on the bottom plate and arranged at intervals, the push plate is arranged between the two sliding rails, two side ends of the push plate are respectively in sliding fit with the two sliding rails, and the lower template is fixedly mounted on the push plate.

9. The food can body rounding and beading forming die of claim 8, wherein: and a limiting plate for limiting the sliding stroke of the push plate is arranged on the bottom plate close to the rear end.

10. The food can body rounding and beading forming die of claim 8, wherein: the front end of the lower template is provided with a handle.