Trimming die for cake support bottom production

Abstract

The invention relates to a trimming die for cake support bottom production. The die comprises an upper die assembly and a lower die assembly, the upper die assembly comprises an upper die plate, a first base plate, a cutter positioning frame and an annular cutter, an inner pressing plate is movably arranged in an inner area defined by the annular cutter, a first elastic part is connected between the inner pressing plate and the upper die plate, and a second base plate is further attached to the bottom face of the inner pressing plate; an outer pressing plate is movably arranged on the outer side of the annular cutter, and a second elastic piece is connected between the outer pressing plate and the cutter positioning frame. The lower die assembly comprises a lower die plate and a male die arranged on the upper side of the lower die plate, a lower concave part is arranged in the middle of the upper surface of the male die, and a third base plate is attached to the upper surface of the male die. The machine has the functions of bonding and trimming backing paper, a foam board and surface paper at the same time.

Description

Technical Field

[0001] The present invention relates to a paper trimming die, and more particularly to a trimming die for producing cake bottom trays. Background Art

[0002] A cake bottom tray is a base for supporting a cake body. The structure of the cake bottom tray includes a bottom paper, a foam board, and a surface paper. The size of the foam board is slightly smaller than that of the bottom paper. The foam board is located above the bottom paper. The surface paper completely wraps the foam board and is fixedly attached to the edge of the bottom paper, so that the shape of the cake bottom tray is in an inverted dish shape. During the production of the cake bottom tray, the bottom paper, the foam board, and the surface paper need to be stacked in sequence and adhesively fixed to each other through glue. In this process, it is impossible to ensure that the edges of the bottom paper and the surface paper are completely aligned. Therefore, the existing production process adopts the processes of bonding and trimming (cutting the edge) to produce a bottom tray with flush edges, that is, the original sizes of the bottom paper and the surface paper are slightly larger than the size of the finished product, and trimming is performed after mutual bonding. The bonding process requires corresponding bonding equipment, and the trimming process requires corresponding trimming equipment. If a device that can perform bonding and trimming simultaneously can be developed, then the cake bottom tray production industry can not only save the equipment procurement cost, but also simplify the production process and improve the production capacity. Summary of the Invention

[0003] The present invention provides a trimming die for producing cake bottom trays, which solves the problem in the prior art that the production processes of bonding and trimming of cake bottom trays are not integrated, resulting in the inability to improve the production capacity.

[0004] The above technical problem of the present invention is mainly solved by the following technical solution: A trimming die for producing cake bottom trays includes an upper die assembly and a lower die assembly that are vertically opposite to each other. The characteristics are as follows: The upper die assembly includes an upper template, a first backing plate attached to the bottom surface of the upper template, a cutting knife positioning frame fixed to the lower side of the first backing plate, and an annular cutting knife fixed to the cutting knife positioning frame. The cutting edge of the annular cutting knife is arranged vertically downward. An inner pressing plate is movably arranged in the internal area defined by the annular cutting knife. A first elastic member is connected between the inner pressing plate and the upper template. A second backing plate is also attached to the bottom surface of the inner pressing plate. An annular outer pressing plate is movably arranged outside the annular cutting knife. A second elastic member is connected between the outer pressing plate and the cutting knife positioning frame. A blade accommodating groove for accommodating the annular cutting knife is formed between the inner side wall of the outer pressing plate and the outer side wall of the inner pressing plate. The outer pressing plate and the inner pressing plate can be reset downward under the rebound action of the second elastic member and the first elastic member until the entire annular cutting knife retracts into the blade accommodating groove.

[0005] The lower die assembly includes a lower template and a convex die arranged on the upper side of the lower template. A concave portion is provided in the middle of the upper surface of the convex die. A third backing plate is attached to the upper surface of the convex die.

[0006] The upper mold assembly of the present invention is installed on a press and can be driven by the press to move up and down. The lower mold assembly is opposite to the upper mold assembly and fixed. The press needs to be equipped with a vertical guide assembly to ensure that the upper mold assembly keeps the moving path vertical during the up and down lifting process. The trimming principle of the present invention is: the surface paper, foam board and bottom paper are placed on the convex mold of the lower template in turn to ensure that they are roughly opposite, wherein the raised part of the surface paper is completely matched with the concave part and is sunken in the concave part as a whole, the foam board is sunken in the surface paper as a whole, and the bottom surface of the bottom paper has been coated with quick-drying glue, and then the press pushes the upper mold assembly downward, the outer pressure plate and the second pad first contact the bottom paper, and press the edge parts of the surface paper and the bottom paper on the third pad, the raised parts of the foam board and the surface paper are also completely pushed into the concave part and abut against the bottom of the concave part, as the upper mold assembly continues to be pressed down, the elastic force applied to the outer pressure plate and the inner pressure plate by the second elastic member and the first elastic member also continues to increase, and the pressure of the outer pressure plate is used to keep the outer edge of the paper straight to avoid Wrinkles occur during the trimming process, and the pressure of the inner pressure plate is used to increase the pressure at the pasting site. The greater the pressure, the more secure the pasting. During this process, the annular cutter in the blade accommodating groove gradually extends out and cuts the surface paper and the bottom paper until the annular cutter abuts against the third pad. At this time, the trimming process is completed, but it is generally necessary to maintain this state for a few seconds to increase the adhesion firmness between the papers. Then the press pulls the upper mold assembly upward to reset. At first, the outer pressure plate and the inner pressure plate remain fixed under the rebound action of the elastic member, and the annular cutter begins to gradually retract into the blade accommodating groove, which ensures that the cake base and the waste edge will not be stuck on the annular cutter. Then the outer pressure plate and the inner pressure plate leave the cake base, and the cake base and the waste edge can be taken out.

[0007] Furthermore, a plurality of guide grooves are provided in the cutter positioning frame, a plurality of guide blocks that slide and cooperate with the guide grooves are fixed on the upper side of the outer pressure plate, a step screw that penetrates the first pad is connected between some guide blocks and the upper template, the second elastic member is arranged in the guide groove and abuts against the top of the guide block; a plurality of step screws are also connected between the inner pressure plate and the upper template. The tail of the step screw is a screw rod that can be screwed and fixed with the guide block and the inner pressure plate, the middle part of the step screw is a smooth rod that penetrates the upper template and can move freely, the head of the step screw is a nut that can form a limit with the upper template, and the present invention limits the reset distance of the guide block and the inner pressure plate by means of the step screw.

[0008] Furthermore, the inner pressure plate is provided with an upper vent hole that penetrates the second pad at the same time, and the bottom of the lower concave portion is provided with a lower vent hole that penetrates the lower template. The upper vent hole and the lower vent hole are used to stabilize the air pressure on the upper and lower surfaces of the cake tray to avoid adsorption during demoulding.

[0009] Furthermore, the first elastic members are provided in a plurality and are distributed in a ring shape along the periphery of the inner pressure plate, and the distribution range thereof corresponds to the third pad. The first elastic member is preferably a spring. The present invention increases the downward pressure applied by the inner pressure plate to the cake tray bottom during the pressure holding stage by increasing the number of the first elastic members, and because the reaction force applied by the cake tray bottom to the inner pressure plate during the pressure holding stage is mainly concentrated on the periphery of the pressure plate, in order to avoid deformation of the inner pressure plate due to uneven force, the distribution position of the first elastic member is approximated to the position of the third pad.

[0010] Furthermore, the upper mold plate, the lower mold plate and the inner pressure plate are all aluminum alloy blocks, and the first pad plate, the second pad plate, the third pad plate and the outer pressure plate are all stainless steel plates. The aluminum alloy block has the effects of high strength and light weight, which can effectively reduce the weight of the present invention, while stainless steel can meet the strength and wear resistance requirements of these components.

[0011] Therefore, compared with the prior art, the present invention has the following characteristics: 1. The present invention has the function of bonding and trimming the base paper, foam board and surface paper at the same time; 2. The present invention adopts the upper template, lower template and inner pressure plate made of aluminum alloy, achieving a greater weight reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is an exploded view of the upper die assembly;

[0013] Attached Figure 2 It is the AA section view when the upper die assembly is not under pressure;

[0014] Attached Figure 3 It is a BB-direction cross-sectional view of the present invention when it is not under pressure;

[0015] Attached Figure 4 It is a cross-sectional view of the upper die assembly when it is under pressure;

[0016] Attached Figure 5 It is a structural schematic diagram of the lower mold assembly. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] Example 1: See Figure 1 , Figure 2 , Figure 3 and Figure 4 A trimming mold for cake base production, the cake base is square, the trimming mold includes an upper mold assembly 100 and a lower mold assembly 200 facing each other up and down, the upper mold assembly includes an upper mold plate 110, a first pad 120 attached to the bottom surface of the upper mold plate, a cutter positioning frame 130 fixed to the lower side of the first pad, and an annular cutter 140 fixed to the cutter positioning frame, the cutting edge of the annular cutter is vertically downwardly arranged, eight positioning bolts 10 are screwed on the side wall of the cutter positioning frame, the tail of the positioning bolt passes through the annular cutter, and the inner portion defined by the annular cutter is An inner pressure plate 150 is movably provided in the lower area, a first elastic member 20 is connected between the inner pressure plate and the upper template, and a second pad 160 is also attached to the bottom surface of the inner pressure plate; an outer ring-shaped pressure plate 170 is movably provided on the outer side of the annular cutter, a second elastic member 30 is connected between the outer pressure plate and the cutter positioning frame, a blade accommodating groove for accommodating the annular cutter is formed between the inner side wall of the outer pressure plate and the outer side wall of the inner pressure plate, and the outer pressure plate and the inner pressure plate can be reset downward under the rebound action of the second elastic member and the first elastic member until the annular cutter is retracted into the blade accommodating groove as a whole;

[0020] See Figure 5 The lower mold assembly includes a lower mold plate 210 and a punch 220 disposed on the upper side of the lower mold plate, a lower concave portion 230 is disposed in the middle of the upper surface of the punch, and a third pad 240 is attached to the upper surface of the punch;

[0021] The upper mold plate, the lower mold plate and the inner pressure plate are all aluminum alloy blocks, the first pad, the second pad, the third pad and the outer pressure plate are all stainless steel plates, and the cutter positioning frame is carbon steel. The aluminum alloy block has the effect of high strength and light weight, which can effectively reduce the weight of this embodiment, while stainless steel can meet the strength and wear resistance requirements of these components.

[0022] See Figure 1 and Figure 3, 8 guide grooves 131 are provided in the cutter positioning frame, 8 guide blocks 171 that slide with the guide grooves are fixed on the upper side of the outer pressure plate, and a step screw 40 that passes through the first pad is connected between some guide blocks and the upper template, and the second elastic member is arranged in the guide groove and abuts against the top of the guide block; an upwardly protruding guide protrusion 151 is provided on the upper side of the inner pressure plate, and an inner guide groove 111 that slides with the guide protrusion is provided on the bottom surface of the upper template, and 8 step screws are also connected between the inner pressure plate and the upper template. The tail of the step screw is a screw rod that can be screwed and fixed with the guide block and the inner pressure plate, the middle part of the step screw is a light rod that passes through the upper template and can move freely, and the head of the step screw is a nut that can form a limit with the upper template. In this embodiment, the reset distance of the guide block and the inner pressure plate is limited by the step screw.

[0023] See Figure 1 and Figure 5 The inner pressure plate is provided with an upper vent hole 152 that penetrates the second pad at the same time, and the bottom of the lower concave portion is provided with a lower vent hole 250 that penetrates the lower template. The upper vent hole and the lower vent hole are used to stabilize the air pressure on the upper and lower surfaces of the cake tray to avoid adsorption during demoulding.

[0024] See Figure 1 The number of the first elastic members is 48 and they are distributed in a ring shape along the periphery of the inner pressure plate, and their distribution range corresponds to the third pad. The first elastic member is preferably a spring. In this embodiment, the downward pressure applied by the inner pressure plate to the cake tray bottom during the pressure holding stage is increased by increasing the number of the first elastic members. Because the reaction force applied by the cake tray bottom to the inner pressure plate during the pressure holding stage is mainly concentrated on the periphery of the pressure plate, in order to avoid deformation of the inner pressure plate caused by uneven force, the distribution position of the first elastic member is similar to that of the third pad.

[0025] The upper mold assembly of this embodiment is installed on a press machine and can be driven by the press machine to move up and down. The lower mold assembly is opposite to the upper mold assembly and fixed. The press machine needs to have a vertical guide assembly to ensure that the upper mold assembly keeps the moving path vertical during the up and down lifting process. The trimming principle of this embodiment is: the top paper, foam board and bottom paper are placed on the convex mold of the lower template in turn to ensure that they are roughly facing each other, wherein the raised part of the top paper is completely matched with the concave part and is sunken in the concave part as a whole, the foam board is sunken in the top paper as a whole, and the bottom surface of the bottom paper has been coated with quick-drying glue, and then the press machine pushes the upper mold assembly downward, the outer pressure plate and the second pad first contact with the bottom paper, and press the edge parts of the top paper and the bottom paper on the third pad, the raised parts of the foam board and the top paper are also completely pushed into the concave part and abut against the bottom of the concave part, as the upper mold assembly continues to be pressed down, the elastic force applied to the outer pressure plate and the inner pressure plate by the second elastic member and the first elastic member also continues to increase, and the pressure of the outer pressure plate is used to keep the outer edge of the paper straight to avoid occurrence during the trimming process. Wrinkles, the pressure of the inner pressure plate is used to increase the pressure at the pasting part, the greater the pressure, the firmer the pasting; in this process, the annular cutter in the blade accommodating groove gradually extends out and cuts the surface paper and the bottom paper until the annular cutter abuts against the third pad, at which time the trimming process is completed, but this embodiment still needs to maintain this state for about 2 seconds, and the pressure at this time is about 2T to increase the adhesion firmness between the papers; then the press pulls the upper mold assembly upward to reset, initially, the outer pressure plate and the inner pressure plate remain fixed under the rebound action of the elastic member, and the annular cutter begins to gradually retract into the blade accommodating groove, which can ensure that the cake base and the waste edge will not be stuck on the annular cutter, and then the outer pressure plate and the inner pressure plate leave the cake base, at which time the cake base and the waste edge can be taken out.

[0026] The present invention can be modified in various ways which are obvious to those skilled in the art, and such modifications are not considered to depart from the scope of the present invention. All such modifications which are obvious to those skilled in the art are intended to be included within the scope of the present claims.

Claims

1. A trimming mold for cake base production, comprising an upper mold assembly and a lower mold assembly facing each other, characterized in that: The upper mold assembly comprises an upper mold plate, a first pad attached to the bottom surface of the upper mold plate, a cutter positioning frame fixed to the lower side of the first pad, and an annular cutter fixed to the cutter positioning frame, the cutting edge of the annular cutter is arranged vertically downward, an inner pressure plate is movably provided in the inner area defined by the annular cutter, a first elastic member is connected between the inner pressure plate and the upper mold plate, and a second pad is also attached to the bottom surface of the inner pressure plate; an annular outer pressure plate is movably provided on the outer side of the annular cutter, a second elastic member is connected between the outer pressure plate and the cutter positioning frame, a blade accommodating groove for accommodating the annular cutter is formed between the inner side wall of the outer pressure plate and the outer side wall of the inner pressure plate, and the outer pressure plate and the inner pressure plate can be reset downward under the rebound action of the second elastic member and the first elastic member until the annular cutter is retracted into the blade accommodating groove as a whole; The lower mold assembly includes a lower mold plate and a punch disposed on the upper side of the lower mold plate, a lower recess is disposed in the middle of the upper surface of the punch, a third pad is attached to the upper surface of the punch, and the outer contour of the third pad is adapted to the inner contour of the annular cutter.

2. The trimming mold for cake base production according to claim 1, characterized in that: A plurality of guide grooves are provided in the cutter positioning frame, a plurality of guide blocks slidingly matched with the guide grooves are fixed on the upper side of the outer pressure plate, a step screw penetrating the first pad is connected between some of the guide blocks and the upper template, the second elastic member is arranged in the guide groove and abuts against the top of the guide block; an upwardly protruding guide protrusion is provided on the upper side of the inner pressure plate, an inner guide groove slidingly matched with the guide protrusion is provided on the bottom surface of the upper template, and a plurality of step screws are also connected between the inner pressure plate and the upper template.

3. The trimming mold for cake base production according to claim 1 or 2, characterized in that: An upper vent hole is provided on the inner pressure plate and penetrates the second pad at the same time, and a lower vent hole is provided at the bottom of the lower recess and penetrates the lower template.

4. The trimming mold for cake base production according to claim 1, characterized in that: The first elastic members are in a plurality and are distributed in a ring shape along the periphery of the inner pressure plate, and the distribution range thereof corresponds to the third pad.

5. The trimming mold for cake base production according to claim 1, characterized in that: The upper template, the lower template and the inner pressure plate are all aluminum alloy blocks, and the first pad, the second pad, the third pad and the outer pressure plate are all stainless steel plates.

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