CN109703105B - Full-automatic paper cover forming machine - Google Patents
Full-automatic paper cover forming machine Download PDFInfo
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- CN109703105B CN109703105B CN201910169643.1A CN201910169643A CN109703105B CN 109703105 B CN109703105 B CN 109703105B CN 201910169643 A CN201910169643 A CN 201910169643A CN 109703105 B CN109703105 B CN 109703105B
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- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 183
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000009957 hemming Methods 0.000 description 22
- 230000006872 improvement Effects 0.000 description 9
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- 238000005056 compaction Methods 0.000 description 2
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- 235000013305 food Nutrition 0.000 description 2
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- 239000011248 coating agent Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
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- 230000036581 peripheral resistance Effects 0.000 description 1
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Abstract
The invention discloses a full-automatic paper cover forming machine, which comprises a conveying turntable, a paper cover conveying die, a paper cover conveying mechanism, a paper cover flanging die, a heating mechanism, a nest edge die, a knurling die, a shaping die and an output mechanism, wherein the conveying turntable is arranged in a rotating mode, the paper cover conveying die is used for positioning paper covers for conveying, the paper cover conveying mechanism is used for conveying paper raw materials, the paper cover flanging die is used for flanging the paper raw materials to form a cylindrical paper cover, the heating mechanism is used for heating the paper cover, the nest edge die is used for softening the paper cover, the knurling die is used for inwards bending the lower part of the side wall of the paper cover, the shaping die is used for outwards compacting the side wall of the inwards bent paper cover, the shaping die is used for compacting the paper cover, the output mechanism is used for outwards conveying the paper covers, the paper cover conveying dies are arranged in a plurality and are arranged in the circumferential direction of the conveying turntable, the flanging die, the heating mechanism, the nest edge die, the shaping die and the output mechanism are sequentially arranged below the circumference direction of the conveying turntable, and the paper conveying mechanism is arranged on the side edge of the flanging die. The processing procedure of paper cover is accomplished through automatic transportation, improves efficiency, reduces the cost of labor.
Description
Technical Field
The invention relates to a processing machine, in particular to a full-automatic paper cover forming machine.
Background
For catering industry, paper cups or paper bowls are used for containing drinks and foods, and the paper cups or the paper bowls are matched with a plastic cover for use, so that the heat preservation, packaging, storage and other uses of the drinks and foods are facilitated. However, with the increasing awareness of environmental protection, plastic covers are being replaced gradually, and the replacement is a more environmental friendly paper cover. At present, the processing machines for paper covers are less, and for the processing of the paper covers, the conveying of raw material paper sheets is mainly completed, then the paper sheets are sequentially folded, nest edges and compacted through a plurality of dies, the folded paper sheets integrally form a column shape, the nest edges enable the bottoms of the side walls to be inwards folded, and the inwards folded side walls and the outer walls are integrally formed by compacting. How to realize the continuous conveying of the paper cover and the realization of the working procedure in the whole process is beneficial to improving the automatic production efficiency and the product quality.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a full-automatic paper cover forming machine which is simple in structure and can complete an automatic processing procedure by orderly conveying paper covers.
The invention adopts the following technical scheme: the utility model provides a full-automatic paper lid forming machine, including the transport carousel that the rotation set up, a paper lid transport mould that is used for the location paper lid to carry, carry the scraps of paper transport mechanism that the scraps of paper raw materials carry out the hem mould that the hem formed cylindricality to the scraps of paper raw materials, carry out the heating mechanism that softens to the paper lid, carry out the nest limit mould that the lateral wall lower part inwards buckled to the paper lid, the knurling mould that inwards buckles the paper lid lateral wall and carry out outside compaction, carry out the compaction to the paper lid and carry out the design mould and the output mechanism that outwards carries to the paper lid, paper lid transport mould is a plurality of and sets up in the circumferencial direction of transport carousel, the hem mould, heating mechanism, nest limit mould, knurling mould, design mould and output mechanism are arranged in proper order below the circumferencial direction of transport carousel and correspond with the stop station of paper lid transport mould of top, scraps of paper transport mechanism sets up in the side of hem mould.
As an improvement, a prepressing mould for prepressing and shaping a cylindrical paper cover formed after the flanging of the flanging mould is arranged between the flanging mould and the adjacent heating mechanism, and the prepressing mould corresponds to a stop station of the paper cover conveying mould above.
As an improvement, the heating mechanism and the nest side die are arranged in two groups, and the two groups of heating mechanisms and the nest side die are sequentially arranged in the circumferential direction of the conveying turntable and used for inwards bending the lower parts of the side walls of the paper cover front and back twice, and the inwards bending degree of the later time is larger than that of the former time.
As an improvement, the paper sheet conveying mechanism is also provided with an oiling mechanism for oiling paper sheet raw materials.
As an improvement, the paper cover conveying die comprises a fixed die body and a pushing component, wherein a cylindrical die cavity for accommodating the paper cover is arranged at the lower part of the fixed die body, the pushing component stretches into the cylindrical die cavity from the upper part of the fixed die body and can move along the axial direction, and a channel is arranged on the pushing component and is connected with an external air suction mechanism for sucking and positioning the paper cover.
As an improvement, the pushing component comprises a pushing plate and a guide shaft which are connected with each other, the pushing plate is cylindrical and is accommodated in the cylindrical die cavity, the cross section of the pushing plate is matched with that of the cylindrical die cavity to be used for abutting against the paper cover, the guide shaft is arranged in the fixed die body in a penetrating mode to axially move, and the channel is axially arranged along the guide shaft and is communicated with one end of the pushing plate.
As an improvement, the nest side die comprises a nest bottom pre-pressing die and a nest bottom die seat which are coaxially and sequentially arranged from inside to outside, wherein the nest bottom die seat is provided with an annular groove for nesting the side wall of the paper cover; when the paper cover conveying die and the nest side die work relatively, the nest bottom pre-pressing die and the nest bottom die seat are matched with the paper cover conveying die through the driving part in sequence, the nest bottom pre-pressing die is abutted against the bottom of the paper cover to limit, and the annular groove of the nest bottom die seat is abutted against the side wall of the paper cover to inwards bend the nest bottom.
As an improvement, a first elastic piece is arranged between the nest bottom pre-pressing die and the nest bottom die seat, the nest bottom die seat pushes the nest bottom pre-pressing die to synchronously move through the first elastic piece when advancing, and after the nest bottom pre-pressing die abuts against the bottom of the paper cover, the nest bottom die seat compresses the first elastic piece when continuing advancing.
As an improvement, the flanging die comprises a flanging fixed die and a movable die set which are coaxially arranged, wherein the flanging fixed die is provided with a cylindrical die outlet which is axially communicated, and the periphery of one end of the cylindrical die outlet, which faces the movable die set, is provided with a guide wall which is obliquely arranged; the movable die set comprises a pre-pressing outer ring, a flanging pre-pressing die and a flanging die which are coaxially and sequentially arranged from outside to inside, the pre-pressing outer ring, the flanging pre-pressing die and the flanging die are sequentially matched with the flanging fixed die through driving components, the pre-pressing outer ring is in contact and matched with the end face of the flanging fixed die for pre-pressing and positioning paper sheets to be flanging, the flanging pre-pressing die is matched with the guide wall and is used for pre-bending the paper sheets to be flanging to have inclination when in contact and matched with the guide wall, and the flanging die is matched with the cylindrical die outlet and is used for forming the paper sheets to be flanging into cylindrical paper covers in the cylindrical die outlet when pushing towards the cylindrical die outlet; when the folding bottom die pushes the paper cover upwards out of the cylindrical die outlet hole, the paper cover is pushed to the upper paper cover conveying die for positioning.
As an improvement, the pre-pressing outer ring and the flanging pre-pressing die are synchronously pushed by a pre-pressing ejector rod, an elastic component is arranged between the pre-pressing outer ring and the flanging pre-pressing die and the pre-pressing ejector rod, and the pre-pressing outer ring and the flanging pre-pressing die are respectively abutted against the end face of the flanging fixed die and the guide wall by virtue of the elasticity of the elastic component; when the pre-pressing outer ring is abutted against the end face of the flanging fixed die, the pre-pressing ejector rod continuously moves to prop the flanging pre-pressing die against the guide wall; the front end of the pre-pressing ejector rod is provided with a pre-pressing arrangement frame, the pre-pressing arrangement frame comprises a top disc, an inner pressing ring and an outer pressing ring, the top disc is arranged at the end part of the pre-pressing ejector rod, and the inner pressing ring and the outer pressing ring are respectively arranged at the inner side and the outer side of the top disc; the outer pressing ring carries out upper limit on the pre-pressing outer ring through a step, and an elastic part is arranged between the pre-pressing outer ring and the top disc; the inner pressure ring is used for limiting the upper limit of the flanging pre-pressing die through the step, and an elastic component is arranged between the flanging pre-pressing die and the top disc.
The invention has the beneficial effects that: the procedures of feeding, flanging, nest edge, forming and discharging the paper cover are completed through the paper cover conveying mould arranged on the conveying turntable, and the moulds and the mechanisms which are sequentially arranged in the circumferential direction of the conveying turntable. The paper sheet raw material is conveyed to a flanging die by a paper sheet conveying mechanism; after the flanging die finishes flanging the paper sheet raw material to form a cylindrical paper cover, the paper cover is positioned and conveyed by a paper cover conveying die; the conveying turntable rotates, and the paper cover reaches the heating mechanism to be heated and softened; the conveying turntable rotates, and the paper cover reaches the nest edge die to inwards bend the nest edge at the lower part of the side wall; the conveying turntable rotates, and the paper cover reaches the knurling die to compact the side wall of the paper cover which is bent inwards; the conveying turntable rotates, and the paper cover reaches the shaping mould to be compacted and shaped; the conveying turntable rotates, the paper cover reaches the output mechanism, and the paper cover conveying mould releases the positioning of the paper cover to enable the paper cover to be output from the output mechanism. The whole process is finished in forming the paper cover, the paper cover conveying dies on the conveying turntable respectively convey the paper cover, and the respective work of the paper cover conveying dies can be finished without interference at each position, so that the working efficiency is greatly improved, the product quality is ensured by automatic production, and the economic benefit is improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention from the front.
Fig. 2 is a schematic view of the back side view of the present invention.
Fig. 3 is a schematic cross-sectional structural view of a longitudinal section of the nest side die and the paper cover conveying die of the present invention.
Fig. 4 is an enlarged view of the structure at M in fig. 3.
Fig. 5 is a schematic cross-sectional structural view of a longitudinal section of the hemming die of the invention.
Fig. 6 is an enlarged view of the structure at N in fig. 5.
Fig. 7 is a schematic perspective view of a heating mechanism of the present invention.
Fig. 8 is a schematic perspective view of a shaping mold or a pre-pressing mold according to the present invention.
Fig. 9 is a schematic cross-sectional structural view of a longitudinal section of the knurling mold of the invention.
Fig. 10 is a schematic cross-sectional view of a longitudinal section of the paper cover of the present invention after hemming, after nest edge, and after final forming.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1-10, an embodiment of the fully automatic paper cover forming machine of the present invention is shown. The embodiment comprises a conveying turntable 1 which is rotatably arranged, a paper cover conveying die 2 which is used for positioning the paper cover and conveying the paper cover, a paper cover conveying mechanism 3 which is used for conveying the paper cover raw materials, a flanging die 4 which is used for flanging the paper cover raw materials to form a cylindrical paper cover, a heating mechanism 5 which is used for heating the paper cover and softening the paper cover, a nest edge die 6 which is used for inwards bending the lower part of the side wall of the paper cover, a knurling die 7 which is used for outwards compacting the side wall of the inwards bent paper cover, a shaping die 8 which is used for compacting the paper cover and an output mechanism 9 which is used for outwards conveying the paper cover, wherein the paper cover conveying die 2 is a plurality of and is arranged in the circumferential direction of the conveying turntable 1, and the flanging die 4, the heating mechanism 5, the nest edge die 6, the knurling die 7, the shaping die 8 and the output mechanism 9 are sequentially arranged below the circumferential direction of the conveying turntable 1 and correspond to a stop station of the paper cover conveying die 2 above, and the paper cover conveying mechanism 3 is arranged on the side edge of the flanging die 4.
When the invention is used, working procedures are as follows:
[1] the paper sheet raw material is conveyed into a flanging die 4 from the side edge by a paper sheet conveying mechanism 3;
[2] the flanging die 4 presses the paper sheet raw material into a cylindrical paper cover A, and outputs the cylindrical paper cover A from above to the opposite paper cover conveying die 2 for positioning;
[3] the conveying turntable 1 rotates, the paper cover A is conveyed to the heating mechanism 5, and the heating mechanism 5 softens the film on the paper cover A, so that the film can be well nest edges;
[4] the conveying turntable 1 rotates, the paper cover A is conveyed to the nest edge mould 6, and the nest edge mould 6 bends the nest edge inwards on the lower part of the side wall of the paper cover A;
[5] the conveying turntable 1 rotates, the paper cover A is conveyed to the knurling mould 7, and the knurling mould 7 compacts the side wall of the paper cover A which is inwards bent;
[6] the conveying turntable 1 rotates, the paper cover A is conveyed to the shaping mould 8, and the shaping mould 8 compacts and shapes the paper cover A;
[7] the conveying turntable 1 rotates, the paper cover A is conveyed to the output mechanism 9, and the paper cover A conveying die 2 releases the positioning of the paper cover A, so that the paper cover A falls to the output mechanism 9 for output.
The whole process is completed to process and shape the paper cover A, as shown in FIG. 10, the paper sheet is pressed into a cylindrical paper cover A shown in the first state by a flanging die 4, then is further pressed into a paper cover A with inwards bent nest edges shown in the second state by a nest edge die 6, finally is compacted by a knurling die 7 and is further compacted and shaped by a shaping die 8 to form a finished paper cover A shown in the third state; the paper cover conveying dies 2 on the conveying turntable 1 respectively convey the paper covers A, and the respective work of the positions can be completed without interference, so that the working efficiency is greatly improved, the product quality is ensured by automatic production, and the economic benefit is improved. The paper cover manufactured by the above method is preferably a round paper cover, but is not limited to processing only round paper covers, and can be used for processing uneven paper covers, square paper covers, reels and the like when processing with a mold of a corresponding shape.
As an improved specific embodiment, a pre-pressing die 10 for pre-pressing and shaping the cylindrical paper cover formed after the edge folding of the edge folding die 4 is further arranged between the edge folding die 4 and the adjacent heating mechanism 5, and the pre-pressing die 10 corresponds to the stay station of the paper cover conveying die 2 above.
As shown in fig. 1, a pre-pressing die 10 is arranged, namely a plurality of working procedures [2.1] are added between [2] and [3], the paper cover A pressed into a column shape by the flanging die 4 is compacted and shaped at the pre-pressing die 10, so that the column shape of the paper cover A is convenient to accurately and nondeformably, and further nest edges of the paper cover A by the follow-up nest edge die 6 are facilitated.
As an improved specific embodiment, the two groups of heating mechanisms 5 and the nest edge die 6 are arranged, and the two groups of heating mechanisms 5 and the nest edge die 6 are sequentially arranged in the circumferential direction of the conveying turntable 1 and are used for inwards bending the lower parts of the side walls of the paper cover front and back twice, and the inwards bending degree of the later time is larger than that of the former time.
As shown in fig. 1 and 2, the two sets of heating mechanisms 5 and the nest edge mold 6 are arranged by dividing the whole nest edge procedure into two sets, namely, the first set firstly bends the paper cover a inwards by a small extent (as shown in the second paper cover a in fig. 10), and then the second set continuously bends the paper cover a large extent to reach the final shape position; the processing mode ensures that the outer film of the paper cover A can be gently bent under the state of heating and softening, avoids the problem of uneven edge bending and folding possibly occurring during one-step forming, and improves the quality of forming the peripheral bending nest edges.
As an improved embodiment, the paper sheet conveying mechanism 3 is also provided with an oiling mechanism 11 for oiling paper sheet raw materials.
As shown in fig. 1, the sheet conveying mechanism 3 may preferably be provided as a structure for conveying sheet-like sheets, such as a circular sheet-like sheet, which includes at least a stacker space 31 and a feeding rail 32, the sheet-like paper sheets are stacked in a stack in the stacking space 31, and the bottommost sheet-like paper sheet can be conveyed by the driving mechanism along the feeding track 32 toward the hemming die 4; the oiling mechanism 11 may be preferably disposed above the feeding rail 32, and when the sheet-shaped paper passes through, the oiling mechanism 11 descends to oil the sheet-shaped paper and then resets, and the sheet-shaped paper is conveyed to the hemming die 4. The oiling mechanism 11 can be used for coating silicone oil on the sheet-shaped paper, so that the smoothness of the surface of the sheet-shaped paper can be improved, the sheet-shaped paper can be smooth in a cylindrical shape when being extruded and formed in the flanging die 4, the friction between the sheet-shaped paper and the die is reduced, the scratch on the surface of the sheet-shaped paper is avoided, and the rejection rate of products is reduced.
As an improved embodiment, the paper cover conveying die 2 comprises a fixed die body 212 and a pushing assembly 213, wherein a cylindrical die cavity 211 for accommodating the paper cover is arranged at the lower part of the fixed die body 212, the pushing assembly 213 extends into the cylindrical die cavity 211 from the upper part of the fixed die body 212 and can move along the axial direction, and a channel 214 is arranged on the pushing assembly 213 and is connected with an external air suction mechanism for sucking and positioning the paper cover.
As shown in fig. 3 and 4, in the implementation, the channel 214 is connected with an external air suction mechanism, such as an air pump, and the air suction mechanism sucks the paper cover a in the cylindrical die cavity 211 for positioning and conveying, and the pushing component 213 is used as the cavity bottom of the cylindrical die cavity 211 to cooperate with the side wall of the cylindrical die cavity 211 to limit the paper cover a; the fixed mould body 212 is fixedly arranged on the conveying turntable 1, the pushing component 213 is axially movably arranged, so that when the paper cover A needs to be discharged, the pushing component 213 can move outwards of the cylindrical mould cavity 211 to move the paper cover A out of the cylindrical mould cavity 211, and when the air suction mechanism does not suck air any more, the positioning of the paper cover A can be released, and the discharge work of the processed paper cover A is realized; and when the feeding is positioned, the reverse operation can be performed, the pushing component 213 extends out of the adsorption paper cover A, and the adsorption paper cover A is positioned in the cylindrical die cavity 211 after reset. The paper cover A positioning, discharging and feeding device has a good overall structure, can adapt to a standardized automatic processing production line, and improves the automatic processing level.
As an improved embodiment, the pushing assembly 213 includes a pushing plate 2131 and a guide shaft 2132, which are connected to each other, the pushing plate 2131 is cylindrical and is accommodated in the cylindrical mold cavity 211, and is adapted to the cross section of the cylindrical mold cavity 211 for abutting against the paper cover, the guide shaft 2132 is inserted into the fixed mold body 212 for axial movement, and the channel 214 is axially disposed along the guide shaft 2132 and is communicated with one end of the pushing plate 2131.
As shown in fig. 3 and 4, the pushing plate 2131 is located in the cylindrical cavity 211 and is preferably provided in a cylindrical shape corresponding to the cross section of the cylindrical cavity 211 for good contact with the paper cover a; the guide shaft 2132 axially moves in the fixed die body 212 and is used for driving the push plate 2131 to perform discharging and resetting work; the channel 214 is arranged in the guide shaft 2132, can be communicated with the upper end for connection of the suction mechanism, and the lower end is communicated with the right center of the push plate 2131 for absorbing the paper cover A stably in the middle; the structure is simple and the manufacturing is convenient.
As an improved specific embodiment, a third elastic piece 2133 is sleeved on the guide shaft 2132, the upper end of the third elastic piece 2133 is abutted against a step arranged on the guide shaft 2132, the lower end is abutted against the fixed mould body 212, and the third elastic piece 2133 is compressed when the guide shaft 2132 drives the push plate 2131 to move towards the cavity opening of the cylindrical mould cavity 211; the restoring force of the third elastic member 2133 drives the pushing plate 2131 to return to the cavity bottom of the cylindrical cavity 211.
As shown in fig. 1, 2, 3 and 4, the guide shaft 2132 may be driven by an external driving component, such as an air cylinder, which is not necessarily disposed in synchronization with the paper cap conveying mold 2, and only needs to be disposed at a station where the paper cap a needs to be pushed out, and when the paper cap conveying mold 2 that needs to be pushed out arrives, the driving component drives the pushing component 213 downward to push out, and compresses the third elastic component 2133, and the pushing component 213 is reset by the third elastic component 2133, which is not necessary to use an external driving component. Thereby realizing the simplification of the structure and the parts and reducing the manufacturing cost.
As a modified embodiment, the nest edge die 6 comprises a nest bottom pre-pressing die 621 and a nest bottom die seat 622 which are coaxially arranged from inside to outside in sequence, wherein the nest bottom die seat 622 is provided with an annular groove 6221 for nesting the side wall of the paper cover; when the paper cover conveying die 2 and the nest side die 6 work relatively, the nest bottom pre-pressing die 621 and the nest bottom die holder 622 are matched with the paper cover conveying die 2 sequentially through the driving component, the nest bottom pre-pressing die 621 abuts against the bottom of the paper cover to limit, and the annular groove 6221 of the nest bottom die holder 622 abuts against the side wall of the paper cover to inwards bend the nest bottom of the side wall.
As shown in fig. 3 and 4, the paper cover a is matched with the size of the cylindrical mold cavity 211, and is positioned therein; the nest bottom pre-pressing die 621 and the nest bottom die holder 622 can sequentially move upwards or synchronously through independent driving components, the nest bottom pre-pressing die 621 stretches into the cylindrical die cavity 211 to abut against the paper cover A to perform stable integral positioning on the paper cover A, subsequent actions are facilitated, the relative position of the paper cover A cannot move due to extrusion of the nest edges, and good and stable peripheral round uniform nest edges are effectively guaranteed. After that, the nest base 622 reaches the paper cover a, and as the paper cover a continuously advances, the annular groove 6221 abuts against the side wall of the paper cover a, and the side wall of the paper cover a bends the nest edge towards the inner wall along the outer wall of the annular groove 6221, so that the nest edge effect as shown in fig. 10 is realized. After the nest edge die 6 is reset, the paper cover A is rotated by the conveying turntable 1 on the paper cover conveying die 2 to be conveyed to the next station. The nest limit work of the paper cover A is well realized through the above preferred scheme, the structure of the paper cover A in front of the nest limit is more stable through structural positioning, the nest limit of a circle in the circumferential direction is ensured to be uniform, the appearance is better, the standardized later procedure is supplied to continue to process into a finished product, the quality of the finished product processed by the paper cover A is improved, the paper cup or the paper bowl is well adapted, and the paper cup or the paper bowl is covered by the uniform and stable peripheral structure.
As an improved embodiment, a first elastic element 623 is arranged between the nest bottom pre-pressing mold 621 and the nest bottom mold seat 622, the nest bottom mold seat 622 pushes the nest bottom pre-pressing mold 621 to synchronously move through the first elastic element 623 during traveling, and after the nest bottom pre-pressing mold 621 abuts against the bottom of the paper cover, the nest bottom mold seat 622 compresses the first elastic element 623 during continuous traveling.
As shown in fig. 3 and 4, by the arrangement of the first elastic element 623, the synchronous movement of the pit bottom pre-pressing mold 621 and the pit bottom mold seat 622 can be realized through one driving component; when synchronously pushing, the nest bottom pre-pressing mold 621 firstly reaches the cylindrical mold cavity 211 to collide with the bottom of the paper cover A, then the nest bottom mold seat 622 continues to move, the side wall of the paper cover A is collided by the annular groove 6221, the side wall of the paper cover A is guided along the outer wall of the annular groove 6221, is bent towards the inner wall of the annular groove 6221 along the bottom of the annular groove 6221, and the nest edge is completed when moving in place; the nest bottom pre-pressing mold 621 can not bring excessive pressure to the paper cover A through the limiting paper cover A of the elasticity of the first elastic piece 623 in the nest edge process, so that excessive extrusion to the paper cover A is avoided, and the appearance of the paper cover A is ensured to be complete and undamaged. When the nest edge mold 6 is located below, the reset of the nest bottom mold seat 622 is realized by the driving component, and the nest bottom pre-pressing mold 621 can reset by gravity or reset by a limiting structure between the nest bottom pre-pressing mold 621 and the nest bottom mold seat 622. The first elastic member 623 is provided to make the limit of the paper cover a softer, and the whole is provided to be driven by one driving part, so that the cost can be well controlled and the complexity of the structure can be reduced.
As an improved embodiment, a pre-pressing mandrel 6211 is disposed at the rear portion of the bottom-nest pre-pressing mold 621, a bottom-nest mandrel 6222 is disposed at the rear portion of the bottom-nest seat 622, the pre-pressing mandrel 6211 is axially movably inserted into the bottom-nest mandrel 6222, and a first elastic member 623 is sleeved on the pre-pressing mandrel 6211 and has two ends limited by the bottom-nest pre-pressing mold 621 and the bottom-nest seat 622 respectively.
As shown in fig. 3 and 4, the pre-pressing mandrel 6211 is well provided with a first elastic element 623, and the first elastic element 623 is preferably a spring, and two ends of the spring are matched with the socket bottom pre-pressing die 621 and the socket bottom die holder 622; the pre-pressing mandrel 6211 is sleeved in the nest bottom mandrel 6222 to axially move, the axial guiding of the pre-pressing mandrel 6211 and the nest bottom mandrel 6222 is stable, the stable axial movement of the nest bottom pre-pressing die 621 and the nest bottom die seat 622 can be guaranteed, the occupied space of the double-rod sleeved structure is small, the whole volume is reduced, and a shaft sleeve can be arranged between the pre-pressing mandrel 6211 and the nest bottom mandrel 6222 to guarantee the movement stability and reduce abrasion.
As an improved specific embodiment, the nest edge mold 6 further comprises a pushing seat 624, the nest bottom core shaft 6222 is axially movably arranged on the pushing seat 624 in a penetrating manner, a second elastic element 625 is arranged between the pushing seat 624 and the nest bottom mold 622, and the pushing seat 624 is driven by a driving component and pushes the nest bottom mold 622 to synchronously move through the second elastic element 625; the periphery of the bottom nest mold 622 has an abutting surface 6223 abutting against the periphery of the cover conveying mold 2, and when the abutting surface 6223 abuts against the cover conveying mold 2, the pushing seat 624 continues to advance to compress the second elastic member 625.
As shown in fig. 3 and 4, by setting the second elastic member 625, it is realized that the nest bottom die seat 622 is also elastically pressed against the abutting surface 6223 of the paper cover conveying die 2, after the nest bottom die seat 622 reaches the abutting surface 6223 to abut, the pushing seat 624 continues to compress the second elastic member 625 to firmly and stably clamp the die, the die is in place and abuts softly, and the die has no hard collision, so that the collision and abrasion between the dies are avoided; the reset of the pushing seat 624 is realized by a driving component, and the nest bottom die seat 622 can be reset by gravity or by a limiting structure between the nest bottom die seat 622 and the pushing seat 624. The second elastic member 625 is arranged to make the in-place fit between the dies softer, and the whole is arranged and driven by one driving part, so that the cost can be well controlled and the complexity of the structure can be reduced. The bottom core shaft 6222 is well provided with a second elastic element 625, and the second elastic element 625 is preferably a spring, and two ends of the spring are matched with the pushing seat 624 and the bottom core seat 622; the nest bottom core shaft 6222 is sleeved in the pushing seat 624 to axially move, the axial guiding of the pushing seat 624 and the nest bottom core shaft 622 is stable, the stable axial movement of the pushing seat 624 and the nest bottom core shaft 622 can be ensured, the space occupied by the double-rod sleeved structure is small, the whole volume is reduced, and the shaft sleeve can be arranged between the pushing seat 624 and the nest bottom core shaft 6222 to ensure the movement stability and reduce the abrasion.
As a modified embodiment, the outer side wall of the annular groove 6221 is higher than the inner side wall, and the outer side wall and the inner side wall are obliquely arranged and are connected in an arc shape at the bottom of the annular groove 6221.
As shown in fig. 3 and 4, the outer side wall is higher, the upper part of the outer side wall is used for contacting with the side wall of the paper cover a in advance and guiding the paper cover a inwards by virtue of the structure of the outer side wall inclining outwards, the bottom of the annular groove 6221 is an arc-shaped ream paper cover a side wall for soft bending, and the inner side wall is bent upwards by smooth connection, so that the nest edge is completed; the guiding and soft nest edge of the side wall of the paper cover A are well realized, and the problem of deformation of the paper cover A caused by hard extrusion contact during the existing nest edge is avoided, so that the yield is improved.
As an improved embodiment, the hemming die 4 comprises a hemming fixed die 41 and a movable die set 42 which are coaxially arranged, wherein the hemming fixed die 41 is provided with a cylindrical die outlet 411 which is axially penetrated, and the periphery of one end of the cylindrical die outlet 411, which faces the movable die set 42, is provided with a guide wall 412 which is obliquely arranged; the movable module 42 comprises a pre-pressing outer ring 423, a flanging pre-pressing die 422 and a flanging die 421 which are coaxially and sequentially arranged from outside to inside, the pre-pressing outer ring 423, the flanging pre-pressing die 422 and the flanging die 421 are sequentially matched with the flanging fixed die 41 through driving components, the pre-pressing outer ring 423 is in contact fit with the end face of the flanging fixed die 41 for pre-pressing and positioning paper sheets to be flanging, the flanging pre-pressing die 422 is matched with the guide wall 412 and is used for pre-bending the paper sheets to be flanging to have inclination when in contact fit, and the flanging die 421 is matched with the cylindrical die hole 411 and is used for forming the paper sheets to be flanging into cylindrical paper covers in the cylindrical die hole 411 when pushing towards the cylindrical die hole 411; the folding die 421 pushes the paper cover upward out of the cylindrical die outlet 411 to position the paper cover upward in the paper cover conveying die 2.
As shown in fig. 5 and 6, it is preferable that the fixed folding die 41 is disposed above, the movable die set 42 is disposed below, the paper to be folded is conveyed from the paper conveying mechanism 3 at the side edge between the fixed folding die 41 and the movable die set 42, and if the paper is a sheet-like paper, the limiting mechanism at the outer side of the movable die set 42 can be used for limiting the alignment of the paper up and down; in the case of a strip of paper, the sheet may be cut into sheets by a cutting mechanism outside the movable die set 42. The pre-pressing outer ring 423, the flanging pre-pressing die 422 and the flanging die 421 can sequentially move upwards or synchronously move through independent driving components, the paper sheets are circumferentially positioned after the pre-pressing outer ring 423 collides with the end face of the flanging fixed die 41, subsequent actions are facilitated, the paper sheets cannot deviate, the pre-pressing outer ring 423 and the end face of the flanging fixed die 41 can adopt a mode of small pressure or elastic collision, and the inward sliding forming of the subsequent paper sheets is facilitated while positioning. After that, the flanging pre-pressing die 422 reaches the guide wall 412, and the inclined surfaces of the flanging pre-pressing die 422 and the guide wall 412 are abutted so as to bend the periphery of the paper sheet to be inclined, and the flanging pre-pressing die 422 and the guide wall 412 can also adopt a mode of slight abutting or elastic abutting of pressure, so that the subsequent paper sheet can be conveniently and inwards slipped for forming while the paper sheet is guided to bend. Finally, the paper sheet is contacted by the folding bottom die 421, the folding bottom die 421 is cylindrical, the paper sheet is pressed into the cylindrical die outlet 411 through continuous advancing, and the periphery of the folded paper sheet is cylindrical; because the outside paper sheets need to be folded through the oblique guiding of the flanging pre-pressing die 422 and the guiding wall 412, the paper sheets are preliminarily extruded and folded in advance, and the paper sheets can be uniformly folded along with the fact that the paper sheets reach the cylindrical side wall formed between the cylindrical die outlet 411 and the folding die 421, and the situation that the extrusion and folding of the structure formed by rapid folding of the periphery are uneven can not occur. With the continuous pushing of the folding die 421, the paper cover formed into a column shape is pushed upwards out of the column-shaped die outlet 411, and can be pushed into the upper paper cover conveying die 2 for positioning. The folding operation of the paper cover A is well realized through the above preferred scheme, the side wall of the paper cover A is stably and uniformly formed through structural guidance, the whole structure is uniformly folded, the paper cover A has a good appearance, the standardized later procedure can be continuously processed into a finished product, the quality of the finished product processed by the paper cover A is improved, the paper cup or the paper bowl can be well adapted, and the paper cup or the paper bowl can be stably covered through the uniform peripheral structure.
As an improved specific embodiment, the pre-pressing outer ring 423 and the flanging pre-pressing die 422 are synchronously pushed by a pre-pressing ejector rod 424, an elastic component 425 is arranged between the pre-pressing outer ring 423 and the flanging pre-pressing die 422 and the pre-pressing ejector rod 424, and the pre-pressing outer ring 423 and the flanging pre-pressing die 422 respectively abut against the end face of the flanging fixed die 41 and the guide wall 412 by virtue of the elasticity of the elastic component 425; when the pre-pressing outer ring 423 abuts against the end face of the hemming die 41, the pre-pressing ejector rod 424 continues to travel to press the hemming pre-pressing die 422 against the guide wall 412; the front end of the pre-pressing ejector rod 424 is provided with a pre-pressing arrangement frame 43, the pre-pressing arrangement frame 43 comprises a top disc 431, an inner pressing ring 432 and an outer pressing ring 433, the top disc 431 is arranged at the end part of the pre-pressing ejector rod 424, and the inner pressing ring 432 and the outer pressing ring 433 are respectively arranged at the inner side and the outer side of the top disc 431; the outer pressing ring 433 performs upper limit on the pre-pressing outer ring 423 through a step 434, and an elastic part 425 is arranged between the pre-pressing outer ring 423 and the top disk 431; the inner pressure ring 432 performs upper limit on the hemming pre-press die 422 through the step 434, and an elastic member 425 is provided between the hemming pre-press die 422 and the top plate 431.
As shown in fig. 5 and 6, the pre-pressing outer ring 423 and the hemming pre-pressing die 422 may be synchronously pushed by one member, that is, the pre-pressing ejector pin 424, and the difference in the positions of pushing out the pre-pressing outer ring 423 and the hemming pre-pressing die 422 is achieved by the elastic member 425; when the pre-pressing outer ring 423 reaches the end face of the folding fixed mould 41 and is in contact with the end face of the folding fixed mould during synchronous pushing, the pre-pressing ejector rod 424 continues to contact the folding pre-pressing mould 422 with the guide wall 412; while the compressible resilient member 425 at the pre-pressed outer ring 423 achieves resilient interference, the hemming pre-press 422 and the guide wall 412 are also resiliently interfering. Under the above structure, the location of outside periphery and the peripheral bending in middle part can be good realization to the elasticity conflict of both is convenient for roll over the die block 421 when promoting the scraps of paper shaping, and peripheral resistance is less, more is favorable to guaranteeing the shaping of scraps of paper, and the periphery of conflict is difficult to hinder the scraps of paper because of the interference power is too big, guarantees paper lid A's yield. And meanwhile, the pre-pressing ejector rod 424 can be driven by one driving component, so that the cost can be well controlled and the complexity of the structure can be reduced.
As a further refinement of the front end structure of the pre-pressing ejector rod 424, a pre-pressing arrangement frame 43 is provided to specifically position the pre-pressing outer ring 423 and the hemming pre-pressing die 422; the inner pressing ring 432 and the outer pressing ring 433 are annular, the inner pressing ring 432 is provided with a step 434 at the inner side of the top disk 431 and outwards forms a limit flanging pre-pressing die 422, the outer pressing ring 433 is provided with a step 434 at the outer side of the top disk 431 and inwards forms a limit pre-pressing outer ring 423, the pre-pressing outer ring 423 and the flanging pre-pressing die 422 extend out of a space between the inner pressing ring 432 and the outer pressing ring 433, and the two are limited by a cylindrical side wall; the lower parts of the pre-pressing outer ring 423 and the hemming pre-pressing die 422 are provided with elastic members 425 which are abutted against the top plate 431, and the elastic members 425 can uniformly arrange a plurality of groups in the circumferential direction to stably bear the pre-pressing outer ring 423 and the hemming pre-pressing die 422.
As a modified embodiment, the inner edge of the end portion of the outer pressing ring 433 and the outer edge of the end portion of the folding fixed die 41 cooperate to form a cutter blade 44 for cutting the sheet to be folded.
As shown in fig. 6, the outer pressing ring 433 may be specifically configured to cooperate with a structure for a strip-shaped paper sheet, that is, the outer pressing ring 433 and the folding fixed die 41 form an up-down cutting structure, and the continuous upward movement of the outer pressing ring 433 is used to realize that the cutter blade 44 cooperating with the outer pressing ring 433 and the folding fixed die 41 cuts the strip-shaped paper sheet out of the middle sheet-shaped paper sheet, so that the strip-shaped paper sheet is convenient to adapt to the type of the strip-shaped paper sheet conveyor.
As an improved specific embodiment, the inner edge of the outer pressing ring 433 is provided with a plurality of paper feeding limiting baffles 45 covering 180 degrees, and a space of 180 degrees is reserved for side paper feeding.
As shown in fig. 6, the paper feeding limit baffle 45 is arranged at the periphery of the outer pressing ring 433 and is a structure for matching with the sheet-shaped paper, and is used in a mode of being matched with the sheet-shaped paper conveying, and the sheet-shaped paper is pushed between the flanging fixed die 41 and the movable die set 42 from the side by the paper conveying mechanism 3; after reaching the paper feeding limit baffle plates 45 which enclose a half circle, the sheet-shaped paper sheets are blocked and stopped at the aligned position; as the optimization, four paper feeding limiting baffle plates 45 can be arranged, two groups are symmetrically arranged at the left and right positions, and two groups are symmetrically arranged at the rear, so that good limiting of sheet-shaped paper sheets is realized; or the paper feeding limiting baffle plates 45 are arranged according to the requirement, so that the blocking limit of paper sheets with different shapes is met.
As an improved specific embodiment, the periphery of the top disk 431 is penetrated on a plurality of guide rods 46, the guide rods 46 are arranged in parallel with the pre-pressing ejector rods 424, and the guide rods 46 are provided with buffer springs 461 for buffering the top disk 431.
As shown in fig. 5 and 6, the guide rod 46 may be preferably disposed at four corners to stably arrange the top plate 431 and enable the top plate 431 to stably move along the axial direction of the pre-pressing ejector rod 424; the top plate 431 is abutted between the folding fixed die 41 and the movable die set 42 at the pushing-out position, and a buffer spring 461 can be further arranged at the resetting time, so that the top plate 431 is well buffered at the resetting time, the hard impact on the inner structure of the pre-pressing arrangement frame 43 caused by descending is reduced, and the abrasion among parts is reduced.
As an improved specific embodiment, the folding die 421 includes a folding top 4211 and a folding top 4212, the folding top 4211 is cylindrical and is disposed at the end of the folding top 4212, the folding top 4212 is axially movably inserted into the pre-pressing top 424, and the pre-pressing top 424 and the folding top 4212 are respectively moved by independent driving components.
As shown in fig. 5 and 6, the hemming heads 4211 are specifically configured to be cylindrical and are adaptively arranged in a space inside the hemming pre-pressing die 422, the hemming heads 4212 connected with the rear end penetrate through the pre-pressing heads 424 and can be connected with independent driving components to move outwards, and shaft sleeves can be arranged between the pre-pressing heads 424 and the hemming heads 4212 to ensure activity stability and reduce abrasion; the double-rod sleeved structure occupies small space, and is more beneficial to reducing the whole volume.
As a modified embodiment, the wall of the cylindrical die outlet 411 and the guide wall 412 are in arc transition.
As shown in fig. 5 and 6, the hole wall and the guide wall 412 of the cylindrical die outlet 411 with arc transition in the middle are more beneficial to the guide flanging of paper sheets, the whole is smooth, the deformation is uniform, the paper sheets are not easy to damage, and the yield is ensured.
As a modified embodiment, the hemming pre-die 422 has a planar wall 4221 on the inside of the end and a sloped wall 4222 on the outside of the end, the sloped wall 4222 being adapted to the guide wall 412.
As shown in fig. 5 and 6, the sloped wall 4222 contacts the guide wall 412 to retain the paper sheet when mated; the plane wall 4221 has no sharp included angle, the surface of the paper sheet is not damaged, a gentle region is formed between the folding die 421 and the inclined wall 4222 to enable the paper sheet to be well transited, the paper sheet is not excessively extruded to leave folds, and the good appearance of the paper cover is ensured.
As an improved embodiment, as shown in fig. 7, the heating mechanism 5 comprises a blowing mechanism 51 and a blowing hood 52, the blowing hood 52 forms a cavity 53, the blowing mechanism 51 is connected to the cavity 53 of the blowing hood 52 from the lower part, the upper part of the cavity 53 is opened and corresponds to the paper cover conveying mold 2, when the paper cover conveying mold 2 is positioned at the heating mechanism 5, the paper cover a covers the upper opening of the cavity 53, the blowing mechanism 51 works to blow hot air to the cavity 53, thereby heating and softening the film on the surface of the paper cover a, and the film is preferably a PE film; and an exhaust passage 54 is preferably provided at the side of the cavity 53 to guide the air flow, so as to avoid the wind from causing a larger pressure on the paper cover a.
As an improved embodiment, as shown in fig. 8, the shaping mold 8 and the pre-pressing mold 10 can be realized by adopting the structure, and the structure comprises a shaping mold 81, a guide rod 82 and a guide rod seat 83, wherein the guide rod 82 axially moves in the guide rod seat 83, the shaping mold 81 is arranged at the upper part of the guide rod 82, and the shaping mold 81 is a cylinder and is used for extending into the cylindrical mold cavity 211 to be matched with the side wall of the cylindrical mold cavity 211 to compact the side wall of the paper cover a, so that the paper cover a in the first state and the third state shown in fig. 10 can be shaped.
As an improved specific embodiment, as shown in fig. 9, the knurling mold 7 comprises a support 71, a knurling wheel 72 and an eccentric rotating mechanism 73, wherein the eccentric rotating mechanism 73 is rotatably arranged in the support 71, the support 71 is matched with the paper cover conveying mold 2 through the structure of the support, the support can be matched with the paper cover conveying mold 2 up and down, and the knurling wheel 72 is positioned at the upper end of the eccentric rotating mechanism 73; the knurling wheel 72 enters the cylindrical die cavity 211 during die assembly, and the eccentric rotating mechanism 73 rotates to enable the knurling wheel 72 to compact the side wall of the paper cover A for one circle.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (9)
1. A full-automatic paper lid forming machine which is characterized in that: the paper cover conveying mechanism comprises a conveying turntable (1) which is rotatably arranged, a paper cover conveying die (2) which is used for positioning paper covers and conveying the paper covers, a paper cover conveying mechanism (3) which is used for conveying paper cover raw materials, a flanging die (4) which is used for flanging the paper cover raw materials to form a cylindrical paper cover, a heating mechanism (5) which is used for heating the paper cover, a nest edge die (6) which is used for inwards bending the lower part of the paper cover, a knurling die (7) which is used for outwards compacting the side wall of the inwards bent paper cover, a shaping die (8) which is used for compacting the paper cover and an output mechanism (9) which is used for outwards conveying the paper cover, wherein the paper cover conveying die (2) is a plurality of paper cover conveying dies (2) and is arranged in the circumferential direction of the conveying turntable (1), the flanging die (4), the heating mechanism (5), the nest edge die (6), the knurling die (7), the shaping die (8) and the output mechanism (9) are sequentially arranged below the circumferential direction of the conveying turntable (1) and correspond to the stop positions of the paper cover conveying die (2) above;
the nest edge die (6) comprises a nest bottom pre-pressing die (621) and a nest bottom die seat (622) which are coaxially and sequentially arranged from inside to outside, and the nest bottom die seat (622) is provided with an annular groove (6221) for nesting the side wall of the paper cover; when the paper cover conveying die (2) and the nest side die (6) work relatively, the nest bottom pre-pressing die (621) and the nest bottom die base (622) are matched with the paper cover conveying die (2) in sequence through driving components, the bottom of the paper cover is abutted against the nest bottom by the nest bottom pre-pressing die (621) to limit, and the side wall of the paper cover is abutted against the side wall of the paper cover by an annular groove (6221) of the nest bottom die base (622) to inwards bend the nest bottom.
2. A fully automatic paper cover forming machine according to claim 1, wherein: the folding machine is characterized in that a pre-pressing die (10) for pre-pressing and shaping a cylindrical paper cover formed after the folding die (4) is arranged between the folding die (4) and the adjacent heating mechanism (5), and the pre-pressing die (10) corresponds to a stay station of the paper cover conveying die (2) above.
3. A fully automatic paper cover forming machine according to claim 1, wherein: the heating mechanism (5) and the nest side die (6) are arranged in two groups, the two groups of the heating mechanism (5) and the nest side die (6) are sequentially arranged in the circumferential direction of the conveying turntable (1) and are used for inwards bending the lower parts of the side walls of the paper cover front and back twice, and the inwards bending degree of the later time is greater than the inwards bending degree of the former time.
4. A fully automatic paper cover forming machine according to claim 1, wherein: the paper sheet conveying mechanism (3) is also provided with an oiling mechanism (11) for oiling paper sheet raw materials.
5. A fully automatic paper cover forming machine according to claim 1 or 2 or 3 or 4, characterized in that: the paper cover conveying die (2) comprises a fixed die body (212) and a pushing assembly (213), a cylindrical die cavity (211) for accommodating a paper cover is arranged at the lower part of the fixed die body (212), the pushing assembly (213) stretches into the cylindrical die cavity (211) from the upper part of the fixed die body (212) and can move along the axial direction, and a channel (214) is arranged on the pushing assembly (213) and is connected with an external air suction mechanism for sucking and positioning the paper cover.
6. The fully automatic paper cover forming machine according to claim 5, wherein: the pushing assembly (213) comprises a pushing plate (2131) and a guide shaft (2132) which are connected with each other, the pushing plate (2131) is cylindrical and is accommodated in the cylindrical die cavity (211), the cross section of the pushing plate is matched with that of the cylindrical die cavity (211) to be used for abutting against a paper cover, the guide shaft (2132) is arranged in the fixed die body (212) in a penetrating mode to axially move, and the channel (214) is axially arranged along the guide shaft (2132) and is communicated to one end of the pushing plate (2131).
7. A fully automatic paper cover forming machine according to claim 1, wherein: the nest bottom pre-pressing die (621) and the nest bottom die seat (622) are provided with first elastic pieces (623), the nest bottom die seat (622) pushes the nest bottom pre-pressing die (621) to synchronously move through the first elastic pieces (623) when the nest bottom die seat (622) moves, and after the nest bottom pre-pressing die (621) abuts against the bottom of the paper cover, the nest bottom die seat (622) compresses the first elastic pieces (623) when the nest bottom die seat continues to move.
8. A fully automatic paper cover forming machine according to claim 1 or 2 or 3 or 4, characterized in that: the flanging die (4) comprises a flanging fixed die (41) and a movable die set (42) which are coaxially arranged, the flanging fixed die (41) is provided with a cylindrical die outlet hole (411) which is axially communicated, and a guide wall (412) which is obliquely arranged is arranged at the periphery of one end of the cylindrical die outlet hole (411) facing the movable die set (42); the movable die set (42) comprises a pre-pressing outer ring (423), a flanging pre-pressing die (422) and a flanging die (421) which are coaxially and sequentially arranged from outside to inside, the pre-pressing outer ring (423), the flanging pre-pressing die (422) and the flanging die (421) are sequentially matched with the flanging fixed die (41) through driving components, the pre-pressing outer ring (423) is in contact fit with the end face of the flanging fixed die (41) and used for pre-pressing and positioning paper sheets to be flanging, the flanging pre-pressing die (422) is matched with the guide wall (412) and is used for pre-bending the paper sheets to be flanging for inclination when in contact fit, and the flanging die (421) is matched with the cylindrical die outlet (411) and is used for forming the paper sheets to be flanging into cylindrical paper covers in the cylindrical die outlet (411) when pushing towards the cylindrical die outlet (411); the folding die (421) pushes the paper cover to the upper paper cover conveying die (2) to be positioned when pushing the paper cover upwards out of the cylindrical die outlet hole (411).
9. The fully automatic paper cover forming machine according to claim 8, wherein: the pre-pressing outer ring (423) and the flanging pre-pressing die (422) are synchronously pushed by a pre-pressing ejector rod (424), an elastic component (425) is arranged between the pre-pressing outer ring (423) and the flanging pre-pressing die (422) and the pre-pressing ejector rod (424), and the pre-pressing outer ring (423) and the flanging pre-pressing die (422) are respectively abutted against the end face of the flanging fixed die (41) and the guide wall (412) by means of the elasticity of the elastic component (425); when the pre-pressing outer ring (423) is abutted against the end face of the flanging fixed die (41), the pre-pressing ejector rod (424) continues to advance to prop the flanging pre-pressing die (422) against the guide wall (412);
the front end of the pre-pressing ejector rod (424) is provided with a pre-pressing arrangement frame (43), the pre-pressing arrangement frame (43) comprises a top disc (431), an inner pressure ring (432) and an outer pressure ring (433), the top disc (431) is arranged at the end part of the pre-pressing ejector rod (424), and the inner pressure ring (432) and the outer pressure ring (433) are respectively arranged at the inner side and the outer side of the top disc (431); the outer pressing ring (433) is used for limiting the pre-pressing outer ring (423) through a step (434), and an elastic part (425) is arranged between the pre-pressing outer ring (423) and the top disc (431); the inner pressure ring (432) is used for limiting the upper limit of the flanging pre-pressing die (422) through the step (434), and an elastic part (425) is arranged between the flanging pre-pressing die (422) and the top disc (431).
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| CN201910169643.1A CN109703105B (en) | 2019-03-06 | 2019-03-06 | Full-automatic paper cover forming machine |
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| CN201910169643.1A CN109703105B (en) | 2019-03-06 | 2019-03-06 | Full-automatic paper cover forming machine |
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| CN109703105B true CN109703105B (en) | 2023-11-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110497654B (en) * | 2019-08-31 | 2020-10-02 | 瑞安市明国机械有限公司 | Station arrangement structure of paper cup cover forming machine |
| CN112046081A (en) * | 2020-08-29 | 2020-12-08 | 李强 | Paper cover and processing technology thereof |
| CN112549659B (en) * | 2020-11-30 | 2022-11-01 | 浙江新德宝机械有限公司 | Double-layer paper cover forming process |
| CN113183526B (en) * | 2021-04-15 | 2022-09-30 | 浙江新发现机械制造有限公司 | Knurling mechanism for cup bottom of paper cup |
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