A double-layer rotary extrusion forming mechanism and its manual-like automatic stuffing machine

Abstract

The present invention provides a double-layer rotary extrusion forming mechanism, comprising: a double-layer rotary extrusion clamp block group with independent drive arranged on a back plate, wherein the inner-layer rotary extrusion clamp block group drives the rotary extrusion through the inner-layer driving mechanism to control the kneading of the dough skin of the stuffed food, and completes the local kneading and edge sealing of the dough skin, the preforming of the stuffing belly and the preforming of the clip marks on the dough skin surface at one time; the outer-layer rotary extrusion clamp block group drives the rotary extrusion through the outer-layer driving mechanism to control the forming of the stuffing belly of the stuffing food; during extrusion forming, the inner-layer rotary extrusion clamp block group is first driven to preform the stuffing food, and then the outer-layer rotary extrusion clamp block group is driven to complete the final forming of the preformed stuffing belly and the clip marks on the dough skin surface and remove the excess air in the stuffing belly. The present invention can completely replace the traditional packaging form of existing hand-made stuffing foods, and the shape of the stuffing food after forming is highly similar to the shape of the hand-made packaging, which greatly saves labor costs.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, in particular to a double-layer rotary extrusion forming mechanism for forming foods imitating handmade stuffing, and an automatic handmade stuffing machine using the forming mechanism. Background Art

[0002] With the development of mechanization, handmade stuffing foods are gradually withdrawing from the market and being replaced by machines. However, the appearance, fullness of the stuffing, and the fit between the dough and the stuffing of handmade stuffing foods are always beyond the reach of machine packaging, which is also the focus of research and development personnel. Common handmade stuffing foods include dumplings and buns.

[0003] Taking the dumpling making machine as an example, the forming devices of the existing automatic dumpling making machines mostly use a horizontal direct one-time mold closing method to realize the mold closing action. This mold closing method has the problems of incomplete mold closing and low forming degree. When the filling soup content is high, the filling is easy to splash out due to excessive extrusion pressure, or the extrusion pressure is too small or the extrusion stroke is too small, so that more air is retained in the filling bag of the rubber belly and is not removed, which is easy to cause skin breakage in subsequent processing; in addition, the taste of the finished product is affected when it is eaten.

[0004] At present, the automatic dumpling making machines on the market also have multi-stroke die-closing forming structures, and the scheme is to set multiple interacting extrusion structures on one side of the forming plate, and form convex ribs on the dumpling belly through the rotational extrusion between the extrusion structures. In this structure, there will be multiple extrusion structures acting together on the surface of the dumpling belly. Due to the simultaneous extrusion of multiple points, there will be problems such as extrusion or unclear convex ribs, the yield rate of dumplings is average, and the appearance is affected. Some equipment also uses flexible forming molds, and the scheme is to use flexible forming materials to make concave cavities, set rib grooves in the concave cavities, and mainly use flexible materials to overcome the damage of rigid materials to the filling bag. The stuffed food is formed by the concave cavity with rib grooves, which is closer to the shape of handmade food. However, this flexible forming mold also has defects in forming. Due to the one-time clamping of the flexible forming mold, it is not possible to bring enough depth and shaping degree of extrusion ribs to the surface of the stuffed food. In the subsequent operation, the convex ribs will disappear and cavities will be generated, which will not only easily cause the problem of skin breakage but also affect the appearance and taste of the finished product.

[0005] Therefore, it is necessary to design a forming mechanism and a stuffing machine that meet the manual standards or even imitate the manual stuffing food, so as to solve the technical problems existing in the current stuffing food. Summary of the invention

[0006] According to the above technical problems that the forming mechanism in the prior art is not durable and air is easily left in the stuffing bag, a double-layer rotary extrusion forming mechanism and a manual-like automatic stuffing machine are provided. The present invention mainly uses a forming mechanism with an independently driven double-layer rotary extrusion structure to form stuffed foods. The inner and outer double-layer extrusion clamps squeeze the dough successively to first remove the air in the stuffing bag to form a pre-clip mark, and then perform the final forming, so that the clip mark is clear, beautiful and durable, and the stuffing of the stuffed food is full and has an excellent taste.

[0007] The technical means adopted by the present invention are as follows:

[0008] A double-layer rotary extrusion forming mechanism, characterized in that it comprises: a double-layer rotary extrusion clamping block group with independent drive arranged on a back plate, wherein the double-layer structure is an inner-layer rotary extrusion clamping block group and an outer-layer rotary extrusion clamping block group arranged in sequence, the inner-layer rotary extrusion clamping block group is driven by the inner-layer driving mechanism to rotary extrusion to control the kneading of the dough skin of stuffed food, and completes the local kneading and edge sealing of the dough skin, the pre-forming of the stuffing bag belly and the pre-forming of the clip marks on the dough skin surface at one time; the outer-layer rotary extrusion clamping block group is driven by the outer-layer driving mechanism to rotary extrusion to control the final forming of the stuffing bag belly of the stuffing food; during extrusion forming, the inner-layer rotary extrusion clamping block group is first driven to pre-form the stuffing food, and then the outer-layer rotary extrusion clamping block group is driven to complete the final forming of the pre-formed stuffing bag belly and the clip marks on the dough skin surface and remove excess air in the stuffing bag belly.

[0009] Furthermore, in the relaxed state, the center lines of the projections of the spacing space I between the clamping blocks of the inner layer rotating extrusion clamping block group and the spacing space II between the clamping blocks of the outer layer rotating extrusion clamping block group on the horizontal plane coincide / or the inner layer center line and the outer layer center line form a certain angle with the pivot extrusion point as the endpoint.

[0010] Furthermore, in the extrusion forming state, the center lines of the orthographic projections of the spacing spaces I between the clamping blocks of the inner layer rotating extrusion clamping block group and the spacing spaces II between the clamping blocks of the outer layer rotating extrusion clamping block group on the horizontal plane coincide with each other, ensuring that the clamping marks on the filling bag belly and the dough surface are consistent and smoothly connected.

[0011] Furthermore, the inner layer rotating extrusion clamp group includes an outer extrusion clamp I arranged at both ends and at least one convex rib extrusion clamp I placed therein for cooperating with the outer extrusion clamp I for extrusion, and the inner layer driving mechanism drives the outer extrusion clamp I to drive each inner layer clamp to pivot and extrude to complete the extrusion action; correspondingly, the outer layer rotating extrusion clamp group includes an outer extrusion clamp II arranged at both ends and at least one convex rib extrusion clamp II placed therein for cooperating with the outer extrusion clamp II for extrusion, and the outer layer driving mechanism drives the outer extrusion clamp II to drive each outer layer clamp to pivot and extrude to complete the extrusion action.

[0012] Furthermore, the outer extrusion clamp I has an outer first extrusion surface I and an outer second extrusion surface I, and the two extrusion surfaces are connected in a circular arc; the convex rib extrusion clamp I has a convex rib first extrusion surface I, a convex rib second extrusion surface I and a convex rib third extrusion surface I, and the extrusion surfaces are connected in a circular arc; the outer extrusion clamp II has an outer first extrusion surface II and an outer second extrusion surface II, and the two extrusion surfaces are connected in a circular arc; the convex rib extrusion clamp II has a convex rib first extrusion surface II, a convex rib second extrusion surface II and a convex rib third extrusion surface II, and the extrusion surfaces are connected in a circular arc; in the extrusion forming state, the outer second extrusion surface I and the outer second extrusion surface II are in the same arc surface I and the two extrusion surfaces are smoothly connected; similarly, the convex rib first extrusion surface I and the convex rib first extrusion surface II are in the same arc surface II and the two extrusion surfaces are smoothly connected, and the gap between the arc surface I and the arc surface II forms a clamping mark on the filling bag belly and the dough skin surface.

[0013] Furthermore, the clamping mark is a ridge-shaped protrusion.

[0014] Furthermore, the upper ends of the convex rib extrusion clamp block I and the convex rib extrusion clamp block II are both provided with grooves matching the limit rod, which are used to control the rotation range of the extrusion blocks during extrusion molding.

[0015] Furthermore, the surfaces of the locations where the blocks of the inner layer rotating extrusion block group and the outer layer rotating extrusion block group meet the dough skin have protrusions that are shaped like the pads of fingers.

[0016] Furthermore, the forming mechanism is made of an elastic material, wherein the elasticity of the contact surface portion formed with the clamping mark is better than the elasticity of other non-contact portions.

[0017] The invention also discloses an automatic manual stuffing encrusting machine, which is characterized in that the double-layer rotary extrusion forming mechanism is used to form stuffed foods.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The present invention forms stuffed food by means of a double-layer independently drivable rotating extrusion clamp block group arranged on a back plate. The function of the inner layer rotating extrusion clamp block group is to control the kneading of the dough of the stuffed food, which is particularly suitable for stuffed food with a smaller width at the dough kneading part. The function of the outer layer rotating extrusion clamp block group is to control the forming of the stuffing belly of the stuffed food. Since it is independently driven, the extrusion range can be accurately controlled, and it can adapt to dough with different water addition rates and different types of fillings.

[0020] 2. In the forming process of the forming mechanism of the present invention, specifically, the inner layer rotary extrusion clamp block group is responsible for the local kneading and edge sealing of the dough skin, that is, the two corners of the stuffed food are not kneaded, and its purpose is to serve as a channel for the air remaining in the dough skin and the stuffing to be discharged; in addition, for the pre-forming of the stuffing bag belly, the dough skin and the stuffing are fully combined through rotary extrusion, the remaining air is discharged from the two corners, and the shape of the stuffing bag belly is fuller and rounder; finally, the pre-forming of the clamp marks on the surface of the dough skin of the stuffed food is completed. The outer layer rotary extrusion clamp block group is mainly based on the characteristics of the dough skin, that is, the degree of deformation of the dough skin, and adjusts and completes the final forming of the dough skin of the stuffed food through the outer layer rotary extrusion. The independent drive structure is also conducive to adjusting the force and time of the extrusion rotation. For example, when the dough skin is hard, the extrusion rotation range can be appropriately reduced to avoid damage to the dough skin; if the dough skin is soft, the clamp mark formation is easy to deform, and the extrusion time can be extended.

[0021] 3. The contact surfaces of the clamping blocks in the forming mechanism of the present invention are designed differently according to their different functions. The side in contact with the dough skin, such as the upper surface of each clamping block of the inner layer rotating extrusion clamping block group (in the direction shown in the figure) is provided with a protrusion shaped like the belly of a finger; furthermore, the extrusion surface of each clamping block used to produce extrusion marks is arranged as a smooth surface connected by an arc, so as to make better use of the effect of consistent and lasting shape of the extrusion marks.

[0022] The shape of the stuffed food formed by the forming mechanism of the present invention is consistent, the clip marks formed on the surface of the skin after rotary extrusion are consistent, similar to the clip marks of manual wrapping, and the fullness of the stuffing bag is consistent. The present invention can completely replace the traditional wrapping form of existing hand-made stuffed food by designing a double-layer independently driven rotary extrusion mechanism of the forming mechanism. The shape of the stuffed food after forming is highly similar to the shape of the manual wrapping, which greatly saves labor costs and fundamentally solves the problems of the stuffing bag of the stuffed food not being full and the poor taste when eaten.

[0023] Based on the above reasons, the present invention can be widely promoted in the field of stuffed foods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a schematic structural diagram of the double-layer rotary extrusion forming mechanism of the present invention.

[0026] Figure 2 It is a schematic diagram of the structure of the extrusion clamp in the double-layer rotary extrusion forming mechanism of the present invention.

[0027] Figure 3 This is a side view of the inner layer rotating extrusion clamp block group of the present invention. As can be seen from the figure, the surface of each clamp block in the inner layer rotating extrusion clamp block group where it connects with the dough skin has a protrusion that is shaped like the belly of a finger.

[0028] Figure 4 It is a schematic diagram of the double-layer rotary extrusion forming mechanism of the present invention in a relaxed state, in which the center lines of the orthogonal projections of the spacing space I between the clamping blocks of the inner layer rotary extrusion clamping block group and the spacing space II between the clamping blocks of the outer layer rotary extrusion clamping block group on the horizontal plane form a certain angle with the pivot extrusion point as the endpoint.

[0029] Figure 5 It is a schematic diagram showing that the center lines of the orthographic projections of the space I between the clamping blocks of the inner layer rotary extrusion clamping block group and the space II between the clamping blocks of the outer layer rotary extrusion clamping block group on the horizontal plane coincide with each other when the double layer rotary extrusion forming mechanism of the present invention is in the extrusion forming state.

[0030] Figure 6 This is a schematic diagram of the outer layer rotating extrusion clamp block group of the present invention, and shows a schematic diagram of an air avoidance hole provided on the outer extrusion clamp block II.

[0031] Figure 7 The figure is a schematic diagram of the station distribution of the manual-simulated automatic stuffing encrusting machine of the present invention.

[0032] Figure 8 The figure is a real picture of dumplings made by the manual-simulating automatic stuffing-making machine of the present invention.

[0033] In the figure: 1. inner layer rotating extrusion clamp group; 11. outer layer extrusion clamp I; 111. outer first extrusion surface I; 112. outer second extrusion surface I; 12. convex rib extrusion clamp I; 121. convex rib first extrusion surface I; 122. convex rib second extrusion surface I; 123. convex rib third extrusion surface I; 124. groove; 13. pivot axis; 2. outer layer rotating extrusion clamp group; 21. outer layer extrusion clamp II; 211. outer first extrusion surface II; 212. outer second extrusion surface II; 22. convex rib extrusion clamp II; 221. convex rib first extrusion surface II; 222. convex rib second extrusion surface II; 223. convex rib third extrusion surface II; 23. connecting rod. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0038] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0040] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0041] like Figure 1 As shown, the present invention provides a double-layer rotary extrusion forming mechanism, comprising: a double-layer rotary extrusion clamp block group with independent driving arranged on a back plate, wherein the double-layer structure is an inner-layer rotary extrusion clamp block group 1 and an outer-layer rotary extrusion clamp block group 2 arranged in sequence, with the stuffed food as the center, the inner-layer rotary extrusion clamp block group 1 is the side that is in contact with its dough, and then the outer-layer rotary extrusion clamp block group 2, and the inner and outer-layer rotary extrusion clamp block groups are designed to be in contact with each other in sequence, Figure 1 When looking downward from the top, i.e. in the direction of orthographic projection, there is an overlapping area between the inner and outer rotating extrusion clamp blocks; Figure 1 Looking from left to right, the inner and outer rotating extrusion clamp blocks are independent of each other and are fitted in design.

[0042] The inner layer rotary extrusion clamp block group 1 controls the kneading of the dough of the stuffed food by driving the rotary extrusion through the inner layer driving mechanism, and completes the local kneading and edge sealing of the dough, the pre-forming of the stuffing bag and the pre-forming of the clamping marks on the surface of the dough at one time. It is particularly suitable for stuffed foods with a smaller edge width at the kneading part of the dough. The local kneading and edge sealing is to leave space for the two corners of the dough, which is conducive to the first discharge of excess air.

[0043] The outer layer rotary extrusion clamp block group 2 controls the forming of the stuffing bag of the stuffed food by driving the rotary extrusion through the outer layer driving mechanism, and adjusts the outer layer rotary extrusion forming strength according to the soft and hard characteristics of the dough skin; during extrusion forming, first drive the inner layer rotary extrusion clamp block group 1 to pre-form the stuffing food, and then drive the outer layer rotary extrusion clamp block group 2 to complete the final forming of the pre-formed stuffing bag and the surface clamp marks of the dough skin and remove the excess air in the stuffing bag, so that the stuffing bag is fuller and the stuffing is in close contact with the dough skin, thereby solving the problem that the presence of air in the stuffing bag of the stuffed food seriously affects the eating taste, and adjusting the extrusion and tightening range by the driving mechanism so that the stuffing food reaches the best state in terms of appearance and taste.

[0044] In the relaxed state, the center lines of the orthographic projections of the spacing spaces I between the clamping blocks of the inner rotating extrusion clamping block group 1 and the spacing spaces II between the clamping blocks of the outer rotating extrusion clamping block group 2 on the horizontal plane coincide / or the center lines of the inner layer and the outer layer form a certain angle with the pivot extrusion point as the endpoint. The standard of this design is to ensure the consistency of extrusion. For example, when the center lines of the spacing spaces between the inner and outer layers coincide, it can be known without a doubt that the extrusion ranges inside and outside are consistent. After the inner layer is extruded, it is further extruded by the outer layer, making the clamping marks more beautiful and clear. Figure 4 As shown, the inner and outer center lines are arranged at a certain angle with the pivoting extrusion point. This design mainly takes into account the hardness of the dough and the different extrusion shapes of various stuffed foods. The extrusion rotation range can be adjusted within a certain range (i.e., within the angle range formed by the center line). Since the inner and outer rotating extrusion clamp blocks are driven separately, such as Figure 6 As shown, air-avoiding holes are also provided on the outer layer rotating extrusion clamp block group in order to independently adjust the outer layer rotation without affecting the inner layer extrusion stroke.

[0045] like Figure 5 As shown, in the extrusion forming state, the center lines of the orthographic projections of the spacing space I between the clamping blocks of the inner layer rotating extrusion clamping block group 1 and the spacing space II between the clamping blocks of the outer layer rotating extrusion clamping block group 2 on the horizontal plane coincide with each other, ensuring that the clamping marks on the filling bag belly and the dough surface are consistent and smoothly connected.

[0046] In addition, the independent driving structure of the present invention is also conducive to adjusting the force and time of extrusion rotation. For example, when the dough is harder, the extrusion rotation range can be appropriately reduced to avoid damage to the dough; if the dough is soft, the clamping mark is easily deformed and the extrusion time can be extended.

[0047] To further describe the characteristics of the clamping block of the present invention, the inner layer rotating extrusion clamping block group 1 includes an outer extrusion clamping block Ⅰ11 arranged at both ends and at least one (two in the schematic diagram, and there will be three clamping marks in the end) convex rib extrusion clamping block Ⅰ12 placed therein for cooperating with the outer extrusion clamping block Ⅰ11 for extrusion, the inner layer driving mechanism drives the outer extrusion clamping block Ⅰ11 to drive the inner layer clamping blocks to pivot and extrude to complete the extrusion action, that is, the outer extrusion clamping block Ⅰ11 and the convex rib extrusion clamping block Ⅰ12 are relatively rotated and extruded through the pivot shaft 13; correspondingly, the outer layer rotating extrusion clamping block group 2 includes an outer extrusion clamping block Ⅱ21 arranged at both ends and at least one convex rib extrusion clamping block Ⅱ22 placed therein for cooperating with the outer extrusion clamping block Ⅱ21 for extrusion, the outer layer driving mechanism drives the connecting rod 23 to drive the outer layer clamping blocks of the outer extrusion clamp Ⅱ21 to pivot and extrude to complete the extrusion action.

[0048] like Figure 2 As shown, the outer extrusion clamp Ⅰ11 has an outer first extrusion surface Ⅰ111 and an outer second extrusion surface Ⅰ112, and the two extrusion surfaces are connected by an arc; the convex rib extrusion clamp Ⅰ12 has a convex rib first extrusion surface Ⅰ121, a convex rib second extrusion surface Ⅰ122 and a convex rib third extrusion surface Ⅰ123, and the extrusion surfaces are connected by an arc; the outer extrusion clamp Ⅱ21 has an outer first extrusion surface Ⅱ211 and an outer second extrusion surface Ⅱ212, and the two extrusion surfaces are connected by an arc; the convex rib extrusion clamp Ⅱ22 has a convex rib first extrusion surface Ⅱ221 , the convex rib second extrusion surface II222 and the convex rib third extrusion surface II223, each extrusion surface is connected by an arc; in the extrusion forming state, the outer second extrusion surface I112 and the outer second extrusion surface II212 are in the same arc surface I and the two extrusion surfaces are smoothly connected; similarly, the convex rib first extrusion surface I121 and the convex rib first extrusion surface II221 are in the same arc surface II and the two extrusion surfaces are smoothly connected, and the interval between the arc surface I and the arc surface II forms a clip mark on the surface of the stuffing bag and the dough skin, and the clip mark is a ridge-shaped protrusion (such as Figure 8 shown).

[0049] Furthermore, if Figure 3 As shown, the surface of each clamping block of the inner layer rotating extrusion clamping block group 1 where it meets the dough skin has a protrusion shaped like the belly of a finger. The present invention makes a finger-shaped profiling design on the front side of the clamping block (the surface where it meets the dough skin) to simulate the effect of hand-wrapping; and makes an arc treatment on the side of the clamping block (the surface where the extrusion clamping mark is formed) to form a consistent and smooth clamping mark.

[0050] The upper ends of the convex rib extrusion clamp block I12 and the convex rib extrusion clamp block II22 are both provided with a groove 124 matching the limit rod, which is used to control the rotation range of the extrusion block during extrusion molding.

[0051] The forming mechanism is made of elastic material, wherein the elasticity of the contact surface formed with the clamping mark is better than the elasticity of other non-contact parts. The material of the forming mechanism can be rubber material, and the strength of the main structure part must be fully guaranteed, and hard rubber can be used. The elasticity of the part forming the clamping mark is better than other parts, and a slightly softer rubber material can be used. Other elastic materials can also be used according to actual needs.

[0052] In addition, the shape of the clamp is not strictly limited in the present invention, and its shape can be determined by the type of stuffed food. The rotational extrusion of the clamp is independently driven by respective driving rods, and the extrusion range can be determined according to different stuffed foods. The shape of the clamp mark is completely consistent with the extrusion surface of the clamp block. By changing the shape of the extrusion surface of the clamp block, it can correspond to stuffed foods with different clamp mark shapes.

[0053] The present invention also discloses a manual-like automatic stuffing machine, which uses the above-mentioned double-layer rotary extrusion forming mechanism to form stuffed foods. Figure 7 The figure shows a specific arrangement of workstations of a manual-like automatic stuffing machine, which includes a skin punching station, a stuffing injection station, a pre-forming station, a forming station, a grabbing station, and some reserved stations. When the manual-like automatic stuffing machine is actually working, the skin punching station is used to punch the pressed dough into a fixed-size dough skin through a cutting device; the stuffing injection station is used to inject the mixed stuffing into the punched dough skin; the pre-forming station is used to pre-press the dough skin that supports the stuffing injection into shape; the forming station is used to rotate and extrude the pre-formed stuffing food again through a forming mechanism; the grabbing station is used to grab and box the formed stuffing food; and the batch production operation is completed in a reciprocating cycle.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-layer rotary extrusion forming mechanism, It is characterized in that include: The double-layer rotating extrusion clamp group arranged on the back plate has an independently driven one, wherein the double-layer structure is an inner-layer rotating extrusion clamp group and an outer-layer rotating extrusion clamp group arranged in sequence, wherein the inner-layer rotating extrusion clamp group is driven by an inner-layer driving mechanism to rotate and extrude to control the kneading of the dough skin of the stuffed food, and completes the local kneading and edge sealing of the dough skin, the preforming of the stuffing bag belly and the preforming of the clamp marks on the dough skin at one time; the outer-layer rotating extrusion clamp group is driven by an outer-layer driving mechanism to rotate and extrude to control the final forming of the stuffing bag belly of the stuffed food; during extrusion forming, the inner-layer rotating extrusion clamp group is first driven to preform the stuffing food, and then the outer-layer rotating extrusion clamp group is driven to transfer the preformed stuffing bag The clamp marks on the surface of the belly and the dough complete the final shaping and eliminate the excess air in the stuffing bag belly; the inner layer rotating extrusion clamp block group includes an outer extrusion clamp block I arranged at both ends and at least one convex rib extrusion clamp block I placed therein for cooperating with the outer extrusion clamp block I for extrusion, and the inner layer driving mechanism drives the outer extrusion clamp block I to drive the inner layer clamps to pivot and extrude to complete the extrusion action; correspondingly, the outer layer rotating extrusion clamp block group includes an outer extrusion clamp block II arranged at both ends and at least one convex rib extrusion clamp block II placed therein for cooperating with the outer extrusion clamp block II for extrusion, and the outer layer driving mechanism drives the outer extrusion clamp block II to drive the outer layer clamps to pivot and extrude to complete the extrusion action.

2. The double-layer rotary extrusion forming mechanism according to claim 1, It is characterized in that In the relaxed state, the center lines of the projections of the spacing space I between the blocks of the inner rotating extrusion block group and the spacing space II between the blocks of the outer rotating extrusion block group on the horizontal plane coincide / or the inner center line and the outer center line form a certain angle with the pivot extrusion point as the endpoint.

3. The double-layer rotary extrusion forming mechanism according to claim 2, It is characterized in that In the extrusion forming state, the center lines of the orthographic projections of the spacing space I between the clamping blocks of the inner layer rotating extrusion clamping block group and the spacing space II between the clamping blocks of the outer layer rotating extrusion clamping block group on the horizontal plane coincide with each other, ensuring that the clamping marks on the filling bag belly and the dough surface are consistent and smoothly connected.

4. The double-layer rotary extrusion forming mechanism according to claim 3, It is characterized in that The outer extrusion clamp I has an outer first extrusion surface I and an outer second extrusion surface I, and the two extrusion surfaces are connected by an arc; the convex rib extrusion clamp I has a convex rib first extrusion surface I, a convex rib second extrusion surface I and a convex rib third extrusion surface I, and the extrusion surfaces are connected by an arc; The outer extrusion clamp II has an outer first extrusion surface II and an outer second extrusion surface II, and the two extrusion surfaces are connected by an arc; the convex rib extrusion clamp II has a convex rib first extrusion surface II, a convex rib second extrusion surface II and a convex rib third extrusion surface II, and the extrusion surfaces are connected by an arc; in the extrusion forming state, the outer second extrusion surface I and the outer second extrusion surface II are in the same arc surface I and the two extrusion surfaces are smoothly connected; similarly, the convex rib first extrusion surface I and the convex rib first extrusion surface II are in the same arc surface II and the two extrusion surfaces are smoothly connected, and the gap between the arc surface I and the arc surface II forms a clamping mark on the filling bag belly and the dough skin surface.

5. The double-layer rotary extrusion forming mechanism according to claim 4, It is characterized in that The clamping mark is a ridge-shaped protrusion.

6. The double-layer rotary extrusion forming mechanism according to claim 5, It is characterized in that The upper ends of the convex rib extrusion clamp block I and the convex rib extrusion clamp block II are both provided with grooves matching the limit rod, which are used to control the rotation range of the extrusion blocks during extrusion molding.

7. The double-layer rotary extrusion forming mechanism according to claim 6, It is characterized in that The surfaces of the places where each clamping block of the inner layer rotating extrusion clamping block group meets the dough skin are provided with protrusions in the shape of finger pads.

8. The double-layer rotary extrusion forming mechanism according to claim 7, It is characterized in that The forming mechanism is made of elastic material, wherein the elasticity of the contact surface portion formed with the clamping mark is better than the elasticity of other non-contact portions.

9. An automatic stuffing machine imitating manual operation. Features: The double-layer rotary extrusion forming mechanism as described in any one of claims 1 to 8 is used for forming stuffed foods.

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