CN219805190U - Closed flat baking tray preforming mechanism - Google Patents

Abstract

The utility model relates to a preforming mechanism of a closed flat baking tray. The utility model comprises a limit frame, wherein a material ejecting plate capable of floating up and down is arranged in the limit frame and is used for placing a rectangular baking tray semi-formed product with a flanging in the circumferential direction; the one-time preforming device comprises a driving device, a guide plate and a pressing device, wherein the guide plate is driven by the driving device to move up and down along the limiting frame, the pressing device is arranged on the guide plate and comprises edge pressing units arranged on the inner sides of turned edges at four sides of a semi-molded product of a baking tray and corner pressing units arranged on the inner sides of turned edges at four corners of the semi-molded product of the baking tray, and each edge pressing unit and each corner pressing unit can move up and down and horizontally along the limiting frame; the secondary preforming device comprises edge pushing units arranged on the outer sides of turned edges at four corners of the semi-formed product of the baking tray and corner pushing units arranged on the outer sides of turned edges at four corners of the semi-formed product of the baking tray. The utility model greatly improves the overall flatness and strength of the baking tray after molding.

Description

Closed flat baking tray preforming mechanism

Technical Field

The utility model relates to the technical field of baking tray production processes, in particular to a closed flat baking tray preforming mechanism.

Background

In the production process of the closed flat baking tray, the semi-molded baking tray product after flanging is required to be molded. However, in the molding process, the periphery of the baking tray is easy to generate mould marks or deformation, so that the strength and the flatness of the baking tray product are poor and the baking tray product is easy to deform.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a closed flat baking tray preforming mechanism, which greatly improves the overall flatness and strength of the baking tray after molding.

For this purpose, the utility model provides a closed flat baking tray preforming mechanism, which comprises a preforming frame, wherein the preforming frame is provided with:

the limiting frame is internally provided with a material ejection plate capable of floating up and down, and the material ejection plate is used for placing a rectangular baking tray semi-formed product with a flanging in the circumferential direction;

the one-time preforming device comprises a driving device, a guide plate and a pressing device, wherein the guide plate is driven by the driving device to move up and down along the limiting frame, the pressing device is arranged on the guide plate and comprises edge pressing units arranged on the inner sides of turned edges at four sides of the semi-molded product of the baking tray and corner pressing units arranged on the inner sides of turned edges at four corners of the semi-molded product of the baking tray, and each edge pressing unit and each corner pressing unit can move up and down and horizontally along the limiting frame;

the secondary preforming device comprises side pushing units arranged on the outer sides of turned edges at four sides of the semi-formed product of the baking tray and corner pushing units arranged on the outer sides of turned edges at four corners of the semi-formed product of the baking tray, wherein each side pushing unit and each corner pushing unit can horizontally move along the limiting frame.

In one embodiment of the utility model, an elastic element is arranged between the top plate and the bottom of the limit frame, and in an initial state, the elastic element applies upward force to the top plate to enable the upper surface of the top plate to be flush with the limit frame.

In one embodiment of the utility model, the elastic element is a spring.

In one embodiment of the present utility model, the pre-forming frame is provided with a workbench, the driving device includes a linear guide post arranged on the workbench and a driving cylinder arranged on the pre-forming frame, the guide plate is slidably connected to the linear guide post, and the driving end of the driving cylinder is connected to the upper end surface of the guide plate.

In one embodiment of the present utility model, the side compression unit and/or the corner compression unit includes a bracket connected to the lower end surface of the guide plate, a slider slidingly connected to the bracket, a driving motor connected to the bracket, a compression cylinder connected to the slider, and a compression block connected to the driving end of the compression cylinder, wherein the compression cylinder is driven by the driving motor to horizontally slide along the lower end surface of the guide plate.

In one embodiment of the utility model, the pressing blocks in the side pressing units are strip-shaped and provided with strip-shaped bosses along the inner sides of the pressing blocks facing the limiting frame, and the pressing blocks in the corner pressing units are block-shaped and provided with arc-shaped bosses along the inner sides of the corners of the pressing blocks facing the limiting frame.

In one embodiment of the utility model, the side pressing units are arranged above the inner sides of four sides of the limiting frame, the angle pressing units are arranged above the inner sides of four corners of the limiting frame, and the pressing blocks in the four side pressing units and the pressing blocks in the four angle pressing units can form a sealed pressing frame at preset positions.

In one embodiment of the utility model, the side pushing unit and/or the angle pushing unit comprises a pushing cylinder and a pushing block connected with the driving end of the pushing cylinder, and the pushing block is driven by the pushing cylinder to horizontally slide along the upper end surface of the limit frame.

In one embodiment of the present utility model, the pushing block in the side pushing unit is in a strip shape and is provided with a strip-shaped pressing edge along an outer side of a side thereof facing the limiting frame, and the pushing block in the corner pushing unit is in an L shape and is provided with an arc-shaped pressing edge along an outer side of a corner thereof facing the limiting frame.

In one embodiment of the present utility model, the four sides of the limit frame are each provided with one side pressing unit, the four corners of the limit frame are each provided with one corner pressing unit, and the pressing blocks in the four side pressing units and the pressing blocks in the four corner pressing units can form a sealing pressing frame at predetermined positions.

Compared with the prior art, the technical scheme of the utility model has the following advantages:

according to the closed flat baking tray preforming mechanism, through the arrangement of the limiting frame, the primary preforming device and the secondary preforming device, when the baking tray semi-formed product is preformed twice, the inner side and the outer side of four sides and four corners of the baking tray semi-formed product are in a die sticking state, gaps are not reserved, die marks or deformation caused by the problem that gaps exist between the pressing blocks or between the pushing blocks in the forming process are avoided, and the overall flatness and strength of the baking tray after being formed are improved.

Drawings

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings.

FIG. 1 is a schematic view of the preforming mechanism of the present utility model.

Fig. 2 is a schematic front view of the preforming mechanism of the present utility model.

Fig. 3 is a schematic structural view of the compressing apparatus of the present utility model.

Fig. 4 is a schematic bottom view of the compression device of the present utility model.

Fig. 5 is a schematic structural view of the secondary preforming device of the present utility model.

Fig. 6 is a schematic bottom view of the secondary preform apparatus of the present utility model.

Fig. 7 is a schematic diagram of the preforming step (downstep) of the present utility model.

Fig. 8 is a schematic view of the preforming step (out-shift step) of the present utility model.

Fig. 9 is a schematic view of the preforming step (pressing step) of the present utility model.

Fig. 10 is a schematic view of the preforming step (pushing step) of the present utility model.

Description of the specification reference numerals:

100. semi-molded baking tray;

1. a pre-forming frame; 11. a work table;

2. a limit frame; 21. an elastic element; 22. a liftout plate;

3. a primary preforming device; 31. a driving device; 311. a linear guide post; 312. a driving cylinder; 313. a guide plate; 32. a compacting device; 32a, an edge pressing unit; 32b, an angle pressing unit; 321. a bracket; 322. a slide block; 323. a driving motor; 324. a compacting cylinder; 325. a compaction block; 326. a strip-shaped boss; 327. arc-shaped bosses;

4. a secondary preforming device; 4a, side pushing means; 4b, an angle pushing unit; 41. a pushing cylinder; 42. pushing the block; 43. strip-shaped blank pressing; 44. and (5) arc edge pressing.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

Referring to fig. 1 to 6, a closed flat baking tray preforming mechanism of the present utility model includes a preforming frame 1, the preforming frame 1 is provided with:

a limiting frame 2, in which a top plate 22 capable of floating up and down is arranged, wherein the top plate 22 is used for placing a baking tray semi-formed product 100 which is rectangular and has a flanging in the circumferential direction;

the primary preforming device 3 comprises a driving device 31, a guide plate 313 which is driven by the driving device 31 to move up and down along the limiting frame 2 and a pressing device 32 which is arranged on the guide plate 313, wherein the pressing device 32 comprises a side pressing unit 32a which is arranged on the inner side of a flanging at four sides of the semi-finished baking tray 100 and a corner pressing unit 32b which is arranged on the inner side of a flanging at four corners of the semi-finished baking tray 100, and each side pressing unit 32a and each corner pressing unit 32b can move up and down along the limiting frame 2;

the secondary preforming device 4 comprises edge pushing units 4a arranged on the outer sides of the turnups at four sides of the baking tray semi-forming product 100 and corner pushing units 4b arranged on the outer sides of the turnups at four corners of the baking tray semi-forming product 100, and each edge pushing unit 4a and each corner pushing unit 4b can horizontally move along the limiting frame 2.

Specifically, an elastic element 21 is disposed between the top plate 22 and the bottom of the limiting frame 2, and in an initial state, an upward force applied to the top plate 22 by the elastic element 21 makes the upper surface of the top plate 22 flush with the limiting frame 2. In this embodiment, the elastic element 21 is a spring.

Specifically, the pre-forming frame 1 is provided with a working table 11, the driving device 31 includes a linear guide post 311 disposed on the working table 11 and a driving cylinder 312 disposed on the pre-forming frame 1, the guide plate 313 is slidably connected to the linear guide post 311, and a driving end of the driving cylinder 312 is connected to an upper end surface of the guide plate 313. In this embodiment, four linear guide posts 311 are provided, two large-diameter heavy cylinders are adopted for the driving cylinders 312, so that stability and smoothness of the guide plate 313 and the pressing device 32 on the guide plate 313 in the pressing and upward processes are ensured,

specifically, the side pressing unit 32a and/or the corner pressing unit 32b includes a bracket 321 connected to the lower end surface of the guide plate 313, a slider 322 slidably connected to the bracket 321, a driving motor 323 connected to the bracket 321, a pressing cylinder 324 connected to the slider 322, and a pressing block 325 connected to the driving end of the pressing cylinder 324, the pressing cylinder 324 being driven by the driving motor 323 to horizontally slide along the lower end surface of the guide plate 313; in this embodiment, the driving motor 323 is a stepping motor.

In this embodiment, the pressing blocks 325 in the side pressing units 32a are elongated and are provided with bar-shaped bosses 326 along the inner sides of the sides thereof facing the limiting frame 2, and the pressing blocks 325 in the corner pressing units 32b are block-shaped and are provided with arc-shaped bosses 327 along the inner sides of the corners thereof facing the limiting frame 2. Through the arrangement, the pressing block 325 can be better attached to the inner sides of the turned edges at four sides or four corners of the semi-molded bakeware 100, so that the pressing block 325 does not shake when being pressed upwards or downwards, and the pressing cylinder 324 adopts a double-shaft pressing cylinder 324.

Specifically, the side pressing units 32a are respectively arranged above the inner sides of the four sides of the limiting frame 2, and the corner pressing units 32b are respectively arranged above the inner sides of the four corners of the limiting frame 2.

Specifically, the side pushing unit 4a and/or the angle pushing unit 4b includes a pushing cylinder 41, and a pushing block 42 connected to the driving end of the pushing cylinder 41, and the pushing block 42 is driven by the pushing cylinder 41 to slide horizontally along the upper end surface of the limit frame 2.

Specifically, the pushing block 42 in the side pushing unit 4a is in a strip shape and is provided with a strip-shaped pressing edge 43 along the outer side of the side thereof facing the limit frame 2, and the pushing block 42 in the corner pushing unit 4b is in an L shape and is provided with an arc-shaped pressing edge 44 along the outer side of the corner thereof facing the limit frame 2. In the secondary preforming operation, the strip-shaped pressing edge 43 is disposed opposite to the boss on the pressing block 325 in the edge pressing unit 32a, and the arc-shaped pressing edge 44 is disposed opposite to the arc-shaped boss 327 on the pressing block 325 in the corner pressing unit 32b.

Specifically, the side pushing units 4a are respectively arranged on the horizontal outer sides of four sides of the limiting frame 2, and the angle pushing units 4b are respectively arranged on the horizontal outer sides of four corners of the limiting frame 2.

In addition, in order to ensure that the pressing blocks 325 in the side pressing units 32a and the pressing blocks 325 in the corner pressing units 32b form a tight pressing frame after reaching a predetermined position (i.e., being moved to be spread outwards and fit inside the turned edge of the bakeware semi-finished product 100), the pressing blocks 325 in the corner pressing units 32b are positioned higher than the pressing blocks 325 in the corner pressing units 32b, and the pressing blocks 325 in the side pressing units 32a start to operate after the pressing blocks 325 in the corner pressing units 32b are in place during pressing and upward movement; the pressing block 42 in the side pressing unit 4a and the pressing block 42 in the corner pressing unit 4b also form a sealing pressing frame after reaching a predetermined position (i.e., being folded inward and moved to be fitted to the outside of the flange of the bakeware half-molded article 100).

The sealing frame formed in the two-time preforming can ensure that the inner and outer sides of four sides and four corners of the bakeware semi-molded product 100 are in a state of being adhered with a mold when the two-time preforming is performed, and no gap is left, so that the problem that a mold mark or deformation is generated due to the gap between the pressing blocks 325 or the pushing blocks 42 in the forming process is avoided.

The driving device 31 and the pressing device 32 in the primary preforming device 3 form a two-stage pressure structure, so that the baking tray semi-finished product 100 can be ensured to be pressed and molded in a segmented manner; to prevent the pressing blocks 325 at four corners and four sides of the pressing device 32 from rubbing against the bakeware semi-molded product 100 when moving to a predetermined position, the pressing blocks are stopped at a distance of 1001-3mm from the bakeware semi-molded product when moving, and are driven to move to a predetermined position by a stepping motor in a suspended state.

Referring to fig. 7 to 10, the operation of the present utility model is as follows:

placing the baking tray semi-molded product 100 subjected to flanging by a punching machine into a limiting frame 2 of a pre-molding frame 1, wherein a material ejection plate 22 is arranged in the limiting frame 2, and the material ejection plate 22 is flush with the limiting frame 2 under the action of an elastic element 21;

the pressing blocks 325 in the four corner pressing units 32b of the pressing device 32 are moved downward to stop at a distance of 1-3mm from the surface of the bakeware semi-finished product 100, then the pressing blocks 325 in the four corner pressing units 32b are moved forward to the four corners of the bakeware semi-finished product 100 to a predetermined position under the action of the driving motor 323, then the pressing blocks 325 in the four side pressing units 32a of the pressing device 32 are moved downward to stop at a distance of 1-3mm from the surface of the bakeware semi-finished product 100, and then the pressing blocks 325 in the four side pressing units 32a are moved forward to the four corners of the bakeware semi-finished product 100 to a predetermined position under the action of the driving motor 323;

under the action of the driving device 31, the guide plate 313 moves downwards and drives the pressing device 32 to press the baking tray semi-molded product 100, and when the baking tray semi-molded product 100 and the ejector plate 22 are continuously pressed downwards, the baking tray semi-molded product 100 and the ejector plate 22 are pressed into the limiting frame 2 until the die is attached, and the first pre-molding is completed, so that a first pre-molded product is obtained;

subsequently, the pushing cylinders 41 in the secondary preforming device 4 act simultaneously to push the pushing blocks 42 in the four side pushing units 4a and the pushing blocks 42 in the four corner pushing units 4b to push and bend the peripheral flanges of the first preformed product inwards to form a second preformed product, and the secondary preforming action is completed;

after the preforming action is completed, the secondary preforming device 4 resets, the second preformed product is loosened, the guide plate 313 ascends, the ejector plate 22 ascends under the action of the springs in the ascending process, the second preformed product ascends along the limiting frame 2 step by step along with the guide plate 313, after the ejector plate 22 drives the second preformed product to reach the position flush with the height of the limiting frame 2, each compression block 325 of the compression device 32 is retracted under the drive of the drive motor 323, then ascends and resets under the action of the compression cylinder 324, after the compression blocks 325 in the edge compression unit 32a are reset under the drive of the drive motor 323, then ascends and resets under the action of the compression cylinder 324, and finally, the second preformed product is flatly placed on the limiting frame 2 and the ejector plate 22.

Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same, and although the present utility model has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present utility model.

Claims (10)

1. The utility model provides a closed flat baking pan preforming mechanism, includes preforming frame (1), its characterized in that, preforming frame (1) is equipped with:

the limiting frame (2) is internally provided with a material ejection plate (22) capable of floating up and down, and the material ejection plate (22) is used for placing a baking tray semi-formed product (100) which is rectangular and is provided with a flanging in the circumferential direction;

the primary preforming device (3) comprises a driving device (31), a guide plate (313) which is driven by the driving device (31) to move up and down along the limit frame (2) and a pressing device (32) which is arranged on the guide plate (313), wherein the pressing device (32) comprises edge pressing units (32 a) which are arranged on the inner sides of flanging at four sides of the semi-finished product (100) of the baking tray and corner pressing units (32 b) which are arranged on the inner sides of flanging at four corners of the semi-finished product (100) of the baking tray, and each edge pressing unit (32 a) and each corner pressing unit (32 b) can move up and down along the limit frame (2);

the secondary preforming device (4) comprises side pushing units (4 a) arranged on the outer sides of the turnups at four sides of the baking tray semi-forming product (100) and corner pushing units (4 b) arranged on the outer sides of the turnups at four corners of the baking tray semi-forming product (100), wherein each side pushing unit (4 a) and each corner pushing unit (4 b) can horizontally move along the limiting frame (2).

2. The closed type flat baking pan preforming mechanism according to claim 1, wherein an elastic element (21) is arranged between the top plate (22) and the bottom of the limiting frame (2), and in an initial state, the upper surface of the top plate (22) is flush with the limiting frame (2) by applying upward force to the top plate (22) through the elastic element (21).

3. A closed pan preform mechanism according to claim 2, characterized in that the elastic element (21) is a spring.

4. The closed type flat baking tray preforming mechanism according to claim 1, wherein a workbench (11) is arranged on the preforming frame (1), the driving device (31) comprises a linear guide post (311) arranged on the workbench (11) and a driving air cylinder (312) arranged on the preforming frame (1), the guide plate (313) is slidably connected with the linear guide post (311), and the driving end of the driving air cylinder (312) is connected with the upper end face of the guide plate (313).

5. The closed type flat baking pan preforming mechanism according to claim 1, wherein the side pressing unit (32 a) and/or the corner pressing unit (32 b) comprises a bracket (321) connected to the lower end surface of the guide plate (313), a sliding block (322) connected to the bracket (321) in a sliding manner, a driving motor (323) connected to the bracket (321), a pressing cylinder (324) connected to the sliding block (322), and a pressing block (325) connected to the driving end of the pressing cylinder (324), wherein the pressing cylinder (324) is driven by the driving motor (323) to horizontally slide along the lower end surface of the guide plate (313).

6. The closed type flat baking pan preforming mechanism according to claim 5, wherein the pressing blocks (325) in the side pressing units (32 a) are long-strip-shaped and are provided with strip-shaped bosses (326) along the inner sides of the pressing blocks facing the limiting frame (2), and the pressing blocks (325) in the corner pressing units (32 b) are block-shaped and are provided with arc-shaped bosses (327) along the inner sides of the corners of the pressing blocks facing the limiting frame (2).

7. The closed type flat baking pan preforming mechanism according to claim 5, wherein one side pressing unit (32 a) is arranged above the inner sides of four sides of the limiting frame (2), one corner pressing unit (32 b) is arranged above the inner sides of four corners of the limiting frame (2), and pressing blocks (325) in the four side pressing units (32 a) and pressing blocks (325) in the four corner pressing units (32 b) can form a closed pressing frame at preset positions.

8. The enclosed pan preform mechanism according to claim 1, wherein the side pushing unit (4 a) and/or the corner pushing unit (4 b) comprises a pushing cylinder (41), and a pushing block (42) connected to the driving end of the pushing cylinder (41), and the pushing block (42) is driven by the pushing cylinder (41) to slide horizontally along the upper end surface of the limit frame (2).

9. The closed type flat baking pan preforming mechanism according to claim 8, wherein the pushing blocks (42) in the side pushing units (4 a) are long-strip-shaped, and are provided with strip-shaped pressing edges (43) along the outer sides of the pushing blocks facing the limiting frame (2), and the pushing blocks (42) in the angle pushing units (4 b) are L-shaped, and are provided with arc-shaped pressing edges (44) along the outer sides of the corners of the pushing blocks facing the limiting frame (2).

10. The closed type flat baking pan preforming mechanism according to claim 8, wherein the side pushing units (4 a) are arranged on the horizontal outer sides of four sides of the limiting frame (2), the angle pushing units (4 b) are arranged on the horizontal outer sides of four corners of the limiting frame (2), and the pushing blocks (42) in the four side pushing units (4 a) and the pushing blocks (42) in the four angle pushing units (4 b) can form a closed pressing frame at preset positions.