CN111134158A

CN111134158A - Mechanized forming device and method for handmade dumplings

Info

Publication number: CN111134158A
Application number: CN202010166513.5A
Authority: CN
Inventors: 王东
Original assignee: Chengdu Juyue Intelligent Mechanical Equipment Co Ltd
Current assignee: Chengdu Juyue Intelligent Mechanical Equipment Co Ltd
Priority date: 2020-01-16
Filing date: 2020-03-11
Publication date: 2020-05-12
Also published as: CN211746531U

Abstract

The invention discloses a mechanized forming device and method for handmade dumplings, belonging to a dumpling forming die, comprising a fixing plate, wherein at least one group of forming tools is arranged above the fixing plate; the forming tool comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are movably mounted on the two support columns, and the central axes of the first clamping piece and the second clamping piece which are turned over on the two support columns are mutually overlapped; a through hole is formed between the first clamping piece and the second clamping piece, and when the first clamping piece and the second clamping piece are opened, the upper edge of the top core body is lower than the lowest points of the leather supporting surfaces of the first clamping piece and the second clamping piece. Through installing a core body in the through-hole between two clamping pieces, and go up reason when the clamping piece is opened and be less than the clamping piece and hold in the palm the skin face, can be by annotating the filling pipe and disclose the cladding downwards sunken position in annotating the filling, and sunken arranging in the through-hole between two clamping pieces in, avoid the cladding to form the vertical angle at inclusion back both ends from this, avoid the vertical angle department cladding too thick and be difficult for cooking thoroughly, promote the off-the-shelf aesthetic property of dumpling, more be close to manual dumpling.

Description

Mechanized forming device and method for handmade dumplings

Technical Field

The invention relates to a dumpling forming die, in particular to a mechanized forming device and method for handmade dumplings.

Background

At present, the forming dies used by an automatic dumpling making machine on the market are mainly of two types, one type is turning forming, the other type is a flat plate pressing die, and the two types of dies can press dumplings to complete making after filling of the dumplings is finished. However, both of the dies with the two types of structures have technical defects, especially, the die with the flat pressing structure has the defects that due to the fact that the two ends of the wrapper are too long, downward vertical angles, lamination or T-shaped shapes are easily formed at the two ends of a finished dumpling product when the wrapper is pressed, and the dumpling is not easy to cook and the taste is affected, as shown in fig. 7 and 8. The forming device for the turnover forming is easy to cause incomplete pressing of the edges of two ends of the dumplings due to the limitation of the clamping piece structure, so that the two ends of the dumplings are opened after the dumplings are made, and the product quality and the taste are influenced, therefore, the structure of the forming die for the dumplings needs to be further researched and improved.

Disclosure of Invention

One of the objectives of the present invention is to provide a mechanized forming device and method for handmade dumplings, so as to solve the technical problems in the prior art that the forming die for the similar dumplings is limited by its structure, the edges at two ends of the dumplings are not pressed thoroughly, and the wrappers are stacked due to the vertical angle.

In order to solve the technical problems, the invention adopts the following technical scheme:

the invention provides a mechanized forming device for handmade dumplings. The forming tool comprises a first clamping piece and a second clamping piece, wherein the first clamping piece and the second clamping piece are movably mounted on at least two supporting columns, and the central axes of the first clamping piece and the second clamping piece which are overturned on the two supporting columns are overlapped with each other. A through hole is formed between the first clamping piece and the second clamping piece, and a top core body is movably mounted in the through hole and used for moving up and down in the through hole. The upper edge of the top core body is lower than the lowest point of the wrapper supporting surface formed on the upper parts of the first clamping piece and the second clamping piece in the filling state.

Preferably, the further technical scheme is as follows: still be equipped with the cup in the through-hole, the top core body is located the inside of cup, just the cup is also movable mounting in the through-hole for under the filling state, the last border of cup is less than the lowest point of the support skin face that first clamping piece, second clamping piece upper portion formed, and the last border of cup is higher than the upper reason of top core body.

The further technical scheme is as follows: the top core body is installed on the first supporting plate through the first lifting rod, the cup body is also installed on the second supporting plate through the second lifting rod, guide rollers are arranged on the first supporting plate and the second supporting plate, and the first clamping piece or/and the second clamping piece are also provided with guide rollers.

The further technical scheme is as follows: still be equipped with the elevating platform between cup and the second layer board, the cup is installed on the elevating platform, just the elevating platform passes through the second lifter to be installed on the second layer board, just the elevating platform still is arranged in between fixed plate and the shaping frock.

The further technical scheme is as follows: the support column is fixed on the fixed plate, the two sides of the first clamping piece and the second clamping piece are movably mounted on the support column through a rotating shaft, and the central axes of the rotating shafts coincide with each other.

The further technical scheme is as follows: the shaping frock is three, and arranges the top of fixed plate in side by side, and installs on respective support column through the pivot respectively.

The further technical scheme is as follows: the upper portions of the first clamping piece and the second clamping piece are respectively provided with a leather supporting surface, and the leather supporting surfaces form a pressing surface after the first clamping piece and the second clamping piece are turned. And after the first clamping piece and the second clamping piece are turned over, a gap is still formed between the pressing surfaces of the first clamping piece and the second clamping piece, and the width of the gap is smaller than the sum of the thicknesses of the two layers of dumpling wrappers.

The invention also provides a dumpling forming method of the forming device, which comprises the following steps:

and step A, connecting the leather, wherein a first clamping piece and a second clamping piece of the forming tool are opened to form a leather supporting surface, and the leather is laid on the leather supporting surface.

And B, filling, namely, the core jacking body is positioned below the lowest point of the wrapper supporting surface formed on the upper parts of the first clamping piece and the second clamping piece, the stuffing filling pipe pokes the wrapper downwards to form a concave part at any one of the time before, during and after filling, the concave part is arranged in the through hole between the first clamping piece and the second clamping piece, and the bottom of the concave part is arranged above the upper edge of the core jacking body.

And C, performing, namely coaxially and upwards overturning the first clamping piece and the second clamping piece under the matching action of the guide roller and the track, and forming a pressing surface by the overturned first clamping piece and the leather supporting surface of the second clamping piece to complete performing.

And D, inclusion, wherein the first clamping piece and the second clamping piece after being turned are stressed, and the leather is extruded by the pressing surface, so that the edges of the leather are completely bonded.

Preferably, the further technical scheme is as follows: in the step A, the core jacking body is positioned in the cup body, the upper edge of the cup body is higher than the upper edge of the core jacking body, and the upper edge of the cup body is also positioned below the lowest point of the leather supporting surface formed on the upper parts of the first clamping piece and the second clamping piece.

The further technical scheme is as follows: the method further comprises a step E of flattening, wherein the top core body moves upwards, and the lower part of the concave part is flattened by the upper edge of the top core body.

Compared with the prior art, the invention has the beneficial effects of at least one of the following:

through the design through-hole between two clamping pieces, and at through-hole movable mounting top core body, and top core body when two clamping pieces are opened, its upper edge is less than the support skin face of clamping piece, thereby be convenient for annotate the filling pipe and disclose a depressed part with the cladding downwards when annotating the filling, and this depressed part is placed in the through-hole between two clamping pieces, and hold by the last reason of top core body, then the inclusion is accomplished in two clamping piece upsets of rethread, can avoid the cladding both ends to produce and extend and form decurrent vertical angle, lead to the cladding volume too much, and then improve because of the too thick difficult problem of cooking that leads to of cladding of vertical angle department, and promote the off-the-shelf aesthetic property of dumpling, make it be close to dumpling more by hand.

Through two clamping pieces coaxial arrangement in with the shaping frock in the fixed plate top for two clamping pieces no longer have the position difference when the upset, guaranteed the clamping piece atress pressfitting fashionable mutual coincide nature, make the cladding at dumpling both ends obtain effective pressfitting, the opening appears at the both ends of avoiding making to accomplish back dumpling, and even the upset many times of two clamping pieces of coaxial arrangement also is difficult for taking place the displacement, forming device pressfitting's stability when having guaranteed automatic dumpling machine continuity of operation.

The wrapper after stuffing injection is closed and preformed by the two clamping pieces, and the flexibility of the wrapper is not required, so that the water content of the wrapper can be improved, the taste of dumplings is improved, and meanwhile, the mechanical forming device for the handmade dumplings provided by the invention is simple in structure, is suitable for being installed on automatic dumpling machines of various specifications, and is wide in application range.

Drawings

Fig. 1 is a schematic structural diagram for explaining an embodiment of the present invention.

Fig. 2 is a schematic view of the bottom orientation of fig. 1.

Fig. 3 is a schematic view of the rear side orientation of fig. 1.

Fig. 4 is another structural diagram of fig. 1.

Fig. 5 is a schematic structural diagram of a dumpling product according to an embodiment of the present invention.

Fig. 6 is a side view of fig. 5.

Fig. 7 is a schematic structural diagram of a finished dumpling product made by a conventional forming device.

Fig. 8 is a side view of fig. 7.

In the figure, 1 is a fixing plate, 21 is a first clamping plate, 22 is a second clamping plate, 23 is a wrapper supporting surface, 3 is a supporting column, 4 is a through hole, 5 is a core pushing body, 6 is a first lifting rod, 7 is a first supporting plate, 8 is a lifting platform, 9 is a guide roller, 10 is a cup body, 11 is a fixing screw hole, 12 is a second supporting plate, 13 is a finished dumpling product, 14 is a vertical angle, and 15 is a second lifting rod.

Detailed Description

The invention is further elucidated with reference to the drawing.

Referring to fig. 1, one embodiment of the present invention is a mechanized forming device for handmade dumplings, which comprises a fixing plate 1, the fixing plate 1 is used as a fixing and supporting device of the device, and then at least one set of forming tools is installed above the fixing plate 1. This shaping frock includes first clamping piece 21 and second clamping piece 22, with aforementioned first clamping piece 21 and the equal movable mounting of second clamping piece 22 on two at least support columns 3 to make the axis of first clamping piece 21 and the upset of second clamping piece 22 on two support columns 3 coincide each other, thereby guarantee the stability of two clamping pieces at every turn upsets, with the stability that promotes the upset position.

Preferably, the supporting column 3 is fixedly mounted on the fixing plate 1, the two sides of the first clamping piece 21 and the second clamping piece 22 are movably mounted on the supporting column 3 through a single rotating shaft, and the central axes of the single rotating shaft on the left side and the right side need to coincide with each other, so as to ensure that the central axes of the first clamping piece 21 and the second clamping piece 22 which turn over on the two supporting columns 3 coincide with each other.

More importantly, a through hole 4 is designed between the first clamping piece 21 and the second clamping piece 22, as shown in fig. 1, the through hole 4 is formed by the first clamping piece 21 and the second clamping piece 22, then a top core body 5 is movably installed in the through hole 4, and the top core body 5 can move up and down in the through hole 4. In the filling state, the upper edge of the top core body 5 is lower than the lowest point of the wrapper supporting surface 23 formed on the upper parts of the first clamping piece 21 and the second clamping piece 22. The core ejecting body 5 has two main functions, one of which is to support the dumpling which is not formed after filling, and the other one is to eject the dumpling to the upper part of the through hole 4 after the dumpling is formed and pressed, so as to be pushed out conveniently.

In the present embodiment, based on the above-mentioned structure, by designing the through hole 4 between the first clip piece 21 and the second clip piece 22, the top core body 5 is movably arranged in the through hole 4, and when the first clamping piece 21 and the second clamping piece 22 are opened under the state that the top core body 5 is filled with stuffing, the upper edge of the filling tube is lower than the wrapper supporting surface 23 of the clamping piece, so that the filling tube can conveniently poke the wrapper downwards to form a concave part while filling, and the concave part is arranged in the through hole 4 between the first clamping piece 21 and the second clamping piece 22 and is supported by the upper edge of the top core body 5, then the first clamping piece 21 and the second clamping piece 22 are turned over to complete inclusion, so that the phenomenon that two ends of the leather material extend to form a downward vertical angle to cause excessive accumulation of the leather material can be avoided, thereby improving the problem that the dumplings are not easy to be cooked due to the excessively thick wrapper at the vertical corners, and improving the aesthetic property of the finished dumplings so that the dumplings are closer to the appearance of handmade dumplings. As mentioned above, the wrapper after filling is closed and preformed by the two clamping pieces, and the flexibility of the wrapper is not required, so that the water content of the wrapper can be improved, and the taste of the dumplings can be improved.

Simultaneously through two clamping pieces coaxial arrangement in with the shaping frock in the fixed plate top for two clamping pieces no longer have the position difference when the upset, guaranteed the clamping piece atress pressfitting fashionable mutual coincide nature, make the cladding at dumpling both ends obtain effective pressfitting, the opening appears at the both ends of avoiding making the back dumpling, and even the upset of two clamping pieces of coaxial arrangement is difficult for taking place the displacement many times, forming device pressfitting's stability when having guaranteed automatic dumpling machine continuity of operation.

According to another embodiment of the present invention, still referring to fig. 1, the inventor has found in experiments that, when the forming device is in use, stuffed dumplings are easily thrown or displaced from the forming device under the rotating force of a station turntable, so that the inventor has made an improvement, namely, a cup body 10 is additionally arranged in the through hole 4, then the top core body 5 is arranged in the cup body 10, then the cup body 10 is movably arranged in the through hole 4, in the stuffing filling state, the upper edge of the cup body 10 is lower than the lowest point of the wrapper supporting surface 23 formed on the upper parts of the first clamping piece 21 and the second clamping piece 22, and the upper edge of the cup body 10 is higher than the upper edge of the top core body 5. Therefore, after the wrapper finishes stuffing filling, the lower part of the dumplings is covered by the cup body 10, so that the temporary positioning effect is realized, and the dumplings are prevented from being thrown out or shifted from the forming device due to the rotating force of the station turntable.

Preferably, in order to control the up-and-down movement of the cup body 10 and the top core 5 in the through hole 4 in the present embodiment, as shown in fig. 2 and 3, the top core 5 is mounted on the first support plate 7 by the first lifting rod 6, and the cup body 10 is also mounted on the second support plate 12 by the second lifting rod 15, as shown in fig. 2, specifically, the top core 5 and the cup body 10 are respectively connected to the first support plate 7 and the second support plate 12 by the respective lifting rods. In addition, the first supporting plate 7 and the second supporting plate 12 are both provided with guide rollers 9, and the guide rollers 9 are used for matching with guide rails on the station turntable to complete specified actions and drive the cup body 10 and the top core body 5 to move up and down in the through hole 4. Based on a unified concept, the guide roller 9 is installed on the first clamping piece 21 and the second clamping piece 22, or on one of the first clamping piece and the second clamping piece, and the first clamping piece 21 and the second clamping piece 22 are opened and closed under the action of the guide rail.

Further, referring to fig. 1, in consideration of the efficiency of the forming mold and without affecting the control, the forming tools may be designed as three as shown in fig. 1, and disposed above the fixed plate 1 side by side and mounted on the respective supporting columns 3 through the rotating shafts. Then, in order to ensure the consistency of the up-and-down movement of the cup body 10 in each through hole 4, a lifting table 8 can be additionally arranged between the cup body 10 and a second supporting plate 12, then the three cup bodies 10 are all installed on the lifting table 8, then the lifting table 8 is in power connection with a second lifting rod 15, namely the lifting table 8 is installed on the second supporting plate 12 through the second lifting rod 15, and as shown in fig. 1, the lifting table 8 is further arranged between the fixing plate 1 and two clamping pieces of the forming tool. The lifting platform 8 can synchronously keep the three cup bodies 10 lifted synchronously, and can also avoid the influence on the supporting stability of the cup bodies 10 caused by the shaking of the cup bodies 10 due to the overlong second lifting rod 15, thereby being beneficial to the positioning of the dumpling by the cup bodies 10.

In addition, the upper parts of the first clamping piece 21 and the second clamping piece 22 are both provided with a leather supporting surface 23, and the leather supporting surface 23 forms a pressing surface after the first clamping piece 21 and the second clamping piece 22 are turned over. In order to avoid the phenomenon that the wrapper at two ends is excessively extruded due to the fact that the first clamping piece 21 and the second clamping piece 22 are pressed together, the inventor further improves the clamping pieces, particularly limits the overturning angle of the clamping pieces, particularly keeps a certain gap between the first clamping piece 21 and the second clamping piece 22 even if the first clamping piece 21 and the second clamping piece 22 are overturned to the maximum angle and under the acting force of a pushing power mechanism, particularly keeps the gap between the first clamping piece 21 and the second clamping piece 22 after the first clamping piece 21 and the second clamping piece 22 are overturned, the width of the gap is smaller than the sum of the thicknesses of the two layers of dumpling wrappers, and therefore the dumpling wrappers are prevented from being excessively extruded to be excessively extended due to excessive pressure.

Referring to fig. 1 and 2, according to another embodiment of the present invention, the forming apparatus is used in the following manner:

and step S1, connecting the leather, namely opening the first clamping piece 21 and the second clamping piece 22 of the forming tool to form a leather supporting surface 23, and paving the leather on the leather supporting surface 23.

Step S2, filling, wherein the top core body 5 is positioned below the lowest point of the wrapper supporting surface 23 formed on the upper parts of the first clamping piece 21 and the second clamping piece 22, the filling injection tube pokes the wrapper downward at any time of filling injection, filling injection and filling injection, the recessed part is arranged in the through hole 4 between the first clamping piece 21 and the second clamping piece 22, the bottom of the recessed part is arranged above the upper edge of the top core body 5, and the wrapper filled with filling is supported by the top core body 5.

In this step, it is preferable that the top core body 5 is placed inside the cup body 10, and the upper edge of the cup body 10 is higher than the upper edge of the top core body 5, and the upper edge of the cup body 10 is also placed below the lowest point of the leather holding surface 23 formed on the upper portions of the first clip piece 21 and the second clip piece 22. So that the cup body 10 can wrap the concave part of the leather inside the cup body 10. The positioning can be realized, and the dumplings can be prevented from being thrown out or shifted by the rotation of the turntable.

And step S3, performing, namely, coaxially and upwards overturning the first clamping piece 21 and the second clamping piece 22 under the matching action of the guide roller 9 and the rail, and forming a laminated surface by the overturned first clamping piece 21 and the leather supporting surface 23 of the second clamping piece 22 to finish performing.

And step S4, clathrating, wherein the first clamping piece 21 and the second clamping piece 22 after turning are stressed to form extrusion on the wrapper by the pressing surface, so that the edges of the wrapper are completely bonded, and the dumpling is shaped as shown in fig. 5 and fig. 6.

Step S5, pushing flat, the top core 5 moving upwards, pushing flat the lower part of the concave part by the top edge of the top core 5, finishing shaping, i.e. on the basis of the dumpling shape shown in fig. 5, pushing flat the concave part 14 into a plane, then the first clip 21 and the second clip 22 open, the top core 5 and the cup body 10 rise to the surface 23 above the wrapper, at this time, the upper edge of the cup body 10 is placed below the top edge of the top core 5, thus facilitating shaping, and after the forming device rotates to the pushing station, the pushing device pushes the dumpling out of the forming device.

It should be noted again that, compared with the similar turning plate die and flat plate pressing die, one of the important improvements of the present invention is that the wrapper forms a concave part through the top core body 5 in the through hole 4 and the two clamping pieces which are coaxially turned over, and the height difference between the top core body 5 and the clamping piece wrapper supporting surface 23 is utilized during filling, so as to prevent the wrapper from being excessively accumulated at the edge after filling, so that a vertical angle is formed at two ends of the bottom of the dumpling after pressing, as shown in fig. 7, and the vertical angle does not need to be shaped at the later stage, so as to form the state shown in fig. 8.

Compared with the common plate turning die, the die is not provided with the through hole and the core pushing body, so the concave part cannot be formed, the two clamping pieces are turned over through respective axes, the pressure on the upper parts and the two sides of the two clamping pieces is different, generally the pressure on the upper parts is large, the pressure on the two sides is small, so the wrapper on the upper parts is extruded to the two ends of the bottom of the dumpling by the large pressure on the upper parts, the two ends of the bottom of the dumpling form vertical angles due to the fact that the wrapper is pushed too much, if the vertical angles are extruded by force subsequently, stacking and laminating are easy to occur, the state shown in figure 8 is formed, and the wrapper on the two ends of the dumpling cannot be completely sealed due to the small pressure on the two sides of the bottom, and the quality of.

For dull and stereotyped pressing die utensil, because dull and stereotyped pressing die utensil itself can't carry out the preforming to the dumpling, consequently need support with the help of its cup in holding in the palm the skin board and annotate the effort that the filling pipe pokes under, make the skin material edge become upright by the tiling, then through the subtend pressing die utensil on the shaping station to the skin material of standing upright on the dull and stereotyped pressing die utensil press into the type, in this process, because the skin material does not carry out the preforming before the pressfitting, the skin material at dumpling both ends leaves the space too long, and need once the pressfitting of dumpling to accomplish this moment, need great pressure, and too big same easy messenger's skin material pressurized and the extension appears, finally extend to and form the vertical angle at both ends, then easily take place to pile up if follow-up extrusion vertical angle of forcing. As mentioned above, since the flat pressing mold cannot be preformed before forming, and only the cup body supports and the filling injection tube pokes the wrapper upright, the requirements for the hardness and toughness of the wrapper are high, the water content of the wrapper cannot be guaranteed, and the dumpling taste is affected.

In addition to the foregoing, it should be further appreciated that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally herein. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides a mechanized forming device of handmade dumpling which characterized in that: the forming device comprises a fixing plate (1), and at least one group of forming tools is arranged above the fixing plate (1);

the forming tool comprises a first clamping piece (21) and a second clamping piece (22), wherein the first clamping piece (21) and the second clamping piece (22) are movably mounted on at least two supporting columns (3), and the central axes of the first clamping piece (21) and the second clamping piece (22) which are turned over on the two supporting columns (3) are mutually overlapped;

a through hole (4) is formed between the first clamping piece (21) and the second clamping piece (22), and a top core body (5) is movably arranged in the through hole (4) and used for moving up and down in the through hole (4) through the top core body (5);

the upper edge of the top core body (5) is lower than the lowest point of the wrapper supporting surface (23) formed on the upper parts of the first clamping piece (21) and the second clamping piece (22) in the stuffing filling state.

2. Mechanized dumpling forming apparatus as claimed in claim 1, characterized in that: still be equipped with cup (10) in through-hole (4), top core body (5) are located the inside of cup (10), just cup (10) also movable mounting be in through-hole (4), be used for under the filling state, the last border of cup (10) is less than the lowest point that holds in the palm leather face (23) that first clamping piece (21), second clamping piece (22) upper portion formed, and the last border of cup (10) is higher than the upper edge of top core body (5).

3. Mechanized dumpling forming apparatus according to claim 2, characterized in that: the top core body (5) is installed on a first supporting plate (7) through a first lifting rod (6), the cup body (10) is installed on a second supporting plate (12) through a second lifting rod (15), guide rollers (9) are arranged on the first supporting plate (7) and the second supporting plate (12), and the first clamping piece (21) or/and the second clamping piece (22) are also provided with the guide rollers (9).

4. Mechanized dumpling forming apparatus as claimed in claim 3, characterized in that: still be equipped with elevating platform (8) between cup (10) and second layer board (12), install on elevating platform (8) cup (10), just elevating platform (8) are installed on second layer board (12) through second lifter (15), just elevating platform (8) are still arranged in between fixed plate (1) and shaping frock (2).

5. Mechanized dumpling forming apparatus as claimed in claim 1, characterized in that: the support column (3) is fixed on the fixing plate (1), the two sides of the first clamping piece (21) and the second clamping piece (22) are movably mounted on the support column (3) through a rotating shaft, and the central axes of the rotating shafts coincide with each other.

6. Mechanized dumpling forming apparatus according to claim 1 or 5, characterized in that: the forming tools are three, are arranged above the fixing plate (1) side by side and are respectively installed on the respective supporting columns (3) through rotating shafts.

7. Mechanized dumpling forming apparatus as claimed in claim 1, characterized in that: the upper parts of the first clamping piece (21) and the second clamping piece (22) are respectively provided with a leather supporting surface (23), and the leather supporting surfaces (23) form a pressing surface after the first clamping piece (21) and the second clamping piece (22) are turned over; and after the first clamping piece (21) and the second clamping piece (22) are turned over, a gap is still formed between the pressing surfaces of the first clamping piece and the second clamping piece, and the width of the gap is smaller than the sum of the thicknesses of the two layers of dumpling wrappers.

8. A method for forming dumplings by the forming device of claim 1, comprising the steps of:

step A, connecting the leather, wherein a first clamping piece (21) and a second clamping piece (22) of a forming tool (2) are opened to form a leather supporting surface (23), and the leather is laid on the leather supporting surface (23);

b, filling, wherein the top core body (5) is positioned below the lowest point of a wrapper supporting surface (23) formed on the upper parts of the first clamping piece (21) and the second clamping piece (22), the wrapper is poked downwards to form a concave part by a filling injection pipe at any one of the time before filling, the time when filling is injected and the time after filling is injected, the concave part is arranged in the through hole (4) between the first clamping piece (21) and the second clamping piece (22), and the bottom of the concave part is arranged above the upper edge of the top core body (5);

c, performing, namely coaxially and upwards overturning the first clamping piece (21) and the second clamping piece (22) under the matching action of the guide roller (9) and the rail, and forming a pressing surface on a leather supporting surface (23) of the overturned first clamping piece (21) and second clamping piece (22) to complete performing;

and D, inclusion, wherein the first clamping piece (21) and the second clamping piece (22) after being turned over are stressed, and the leather is extruded by the pressing surface, so that the edges of the leather are completely bonded.

9. The method of claim 8, wherein: in the step B, the top core body (5) is positioned in the cup body (10), the upper edge of the cup body (10) is higher than the upper edge of the top core body (5), and the upper edge of the cup body (10) is also positioned below the lowest point of the leather supporting surface (23) formed on the upper parts of the first clamping piece (21) and the second clamping piece (22).

10. A method according to claim 8 or 9, characterized in that the method further comprises step E of leveling, the upper core body (5) being moved upwards and the lower part of the depression being leveled by the upper edge of the upper core body (5).