CN210452991U - Punching and blanking integrated die of thermoforming machine - Google Patents

Abstract

A punching and blanking integrated die of a thermoforming machine comprises a lower die, an upper die and at least one punching and blanking device; the punching and blanking device comprises a blanking seat, a punching knife mounting block, a punching knife, an annular pressing block, a knife holder, an annular pressing die, an annular laser knife, a plurality of first springs and a plurality of second springs, wherein a blanking through hole is formed in the blanking seat; the stamping knife is arranged on the stamping knife mounting block and matched with the blanking through hole; the annular pressing block is sleeved on the punching knife; the lower end of the first spring is connected with the annular pressing block, and the upper end of the first spring is connected with the punching knife mounting block; the tool apron is provided with an inner cavity, the annular pressing die is provided with a product accommodating cavity, the tool apron is sleeved outside the punching tool mounting block, and the annular pressing die is arranged in the inner cavity of the tool apron; the annular laser knife is arranged on the annular pressing die, the upper end of the second spring is connected with the punching knife mounting block, and the lower end of the second spring is connected with the annular pressing die. The punching and blanking integrated die can complete the punching and blanking processes of the finished cup cover product at one time, save one station and one set of die, reduce the installation space and reduce the manufacturing cost.

Description

Punching and blanking integrated die of thermoforming machine

Technical Field

The utility model relates to a mould, concretely relates to blanking integration mould that punches a hole of thermoforming machine.

Background

The Chinese utility model with the authorized bulletin number of CN104441587A discloses a plastic cup cover thermoforming machine, which comprises a frame, wherein a conveying unit for conveying plastic sheets, a power driving unit for driving each device to work and a panel control unit for uniformly regulating and controlling each device are arranged on the frame; the input side to the output side of conveying unit sets gradually: the unwinding device is used for unwinding the plastic coiled material to form a plastic sheet; the oven heating device is used for heating and softening the plastic sheet; the mould forming device is used for processing the plastic sheet into a cup-cover-shaped plastic film; the punching device is used for punching the cup-shaped plastic film; the blanking device is used for manufacturing the cup cover-shaped plastic film subjected to the punching treatment into a single cup cover finished product; and the waste material winding device is used for winding and processing the residual cup-shaped plastic film waste materials. The punching device comprises an upper punching die which is arranged above and driven by an upper punching die cylinder, and a lower punching die which is arranged below and matched with the upper punching die. The blanking device comprises an upper blanking die and a lower blanking die, wherein the upper blanking die is arranged above the lower blanking die, and the lower blanking die is arranged below the upper blanking die and matched with the upper blanking die.

When the plastic sheet feeding device works, the plastic sheet discharged by the unwinding device sequentially passes through the oven heating device, the die forming device, the punching device, the blanking device and the waste winding device under the driving of the conveying unit. When the plastic sheet passes through the mold forming device, the mold forming device processes the plastic sheet into a cup-shaped plastic film; when the cup-lid-shaped plastic film passes through the punching device, the punching upper die is driven by the punching upper die cylinder to move downwards so as to be meshed with the punching upper die and the punching lower die, a piece of material is punched, and punching is finished; when the cup-cover-shaped plastic film passes through the blanking device, the blanking lower die rises to enable the blanking lower die and the blanking upper die to be occluded with each other, and a cup cover finished product can be punched and dropped into the blanking lower die. And finally, pushing the finished product of the cup cover to a conveyor by a material pushing cylinder device, outputting the finished product of the cup cover by the conveyor, and simultaneously winding the processed waste by a waste winding device. However, the thermoforming machine adopts two sets of dies to respectively complete the punching and blanking processes of the cup-lid-shaped plastic film, which not only increases one station and needs to occupy a larger installation space, but also adds an additional set of die, thereby increasing the manufacturing cost of the thermoforming machine.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a blanking integration mould that punches a hole of thermoforming machine is provided, this kind of blanking integration mould that punches a hole can once only accomplish the off-the-shelf punching a hole of bowl cover, blanking process, has not only saved a station, reduces the installation space who occupies, simplifies the structure of complete machine moreover, reduces thermoforming machine's cost of manufacture. The technical scheme is as follows:

the utility model provides a blanking integration mould that punches a hole of thermoforming machine, includes lower mould and last mould, and the lower mould is located and is gone up the mould under, its characterized in that: the punching and blanking integrated die also comprises at least one punching and blanking device; the punching and blanking device comprises a blanking seat, a stamping knife mounting block, a stamping knife, an annular pressing block, a knife holder, an annular pressing die, an annular laser knife, a plurality of first springs and a plurality of second springs, wherein the blanking seat is mounted on the lower die and is provided with a blanking through hole in the vertical direction; the stamping knife mounting block is arranged on the upper die, the stamping knife is arranged on the stamping knife mounting block, and the stamping knife is positioned right above the blanking through hole and matched with the blanking through hole; the annular pressing block is sleeved on the punching knife and positioned above the blanking seat, a plurality of guide holes are formed in the bottom surface of the punching knife mounting block, a guide column moving up and down is arranged in each guide hole, and the lower end of each guide column is connected with the annular pressing block; the number of the first springs is the same as that of the guide posts, the first springs correspond to the guide posts one by one, the first springs are sleeved on the corresponding guide posts, the lower ends of the first springs are connected or contacted with the annular pressing block, and the upper ends of the first springs are connected or contacted with the punching knife mounting block; the tool apron is provided with an inner cavity, the bottom surface of the annular pressing die is provided with a product accommodating cavity, the tool apron is sleeved outside the punching tool mounting block, and the annular pressing die is arranged in the inner cavity of the tool apron; the annular laser knife is arranged on the outer side surface of the annular pressing die; each second spring is arranged between the stamping knife mounting block and the annular pressing die and distributed along the circumferential direction of the stamping knife, the upper end of each second spring is connected with the stamping knife mounting block, and the lower end of each second spring is connected with the annular pressing die.

In general, the punching-blanking integrated die is provided at the rear of a die forming apparatus of a thermoforming machine. The mould forming device is used for processing the plastic thin sheet into a cup cover-shaped plastic thin film (namely the plastic thin film with a plurality of cup cover finished products); the product accommodating cavity is matched with the size of a finished product of the cup cover on the cup cover-shaped plastic film.

When the punching and blanking integrated die works, after a formed cup-cover-shaped plastic film reaches a station of the punching and blanking integrated die, a corresponding cup cover finished product on the cup-cover-shaped plastic film enters between an upper die and a lower die, the upper die and the lower die begin to be matched, a product containing cavity on the bottom surface of an annular pressing die is used for limiting the cup cover finished product (the cup cover finished product enters the product containing cavity), an annular pressing block and the top surface of a blanking seat jointly press the cup cover finished product under the action of a first spring, and the position of the cup cover finished product is fixed; then the upper die and the lower die are continuously closed, the punching knife and the blanking seat move relatively, the cup cover finished product is punched through the punching knife (at the moment, the annular pressing block and each guide post on the annular pressing block move towards the punching knife mounting block, the first spring is in a compressed state, the lower end of the punching knife enters the blanking through hole), and the punched waste is discharged through the blanking through hole of the blanking seat; and then, continuously closing the upper die and the lower die, and cutting the punched cup cover finished product out of the cup cover-shaped plastic film through the matching between the annular laser knife 37 and the lower die plate. The tool apron is sleeved outside the stamping tool mounting block, so that the tool apron and the annular pressing die can move relative to the stamping tool mounting block in the horizontal direction; the annular pressing die is arranged in the inner cavity of the tool apron, the punching die mounting block and the annular pressing die are connected through the second springs, the annular pressing die can move up and down in the inner cavity of the tool apron under the action of the second springs, and therefore the cup cover finished product can smoothly enter the product accommodating cavity in the bottom surface of the annular pressing die in the die assembly process, the cup cover finished product can be accurately positioned, and punching and blanking quality of the cup cover finished product can be guaranteed.

In a preferable scheme, the size of the outer side surface of the annular pressing die is matched with that of the inner side surface of the tool apron. Like this, the inboard face of accessible blade holder carries on spacingly to annular moulding-die, ensures that the position of annular laser sword remains stable when blanking, further guarantees blanking and the quality of punching a hole.

In a preferred scheme, the upper die comprises an upper die frame and an upper die plate, the upper die plate is arranged on the upper die frame and is positioned below the upper die frame, and the punching tool mounting block is arranged on the upper die plate; the lower die comprises a lower die frame and a lower template, the lower template is arranged on the lower die frame and is positioned above the lower die frame, the lower template and the lower die frame jointly enclose a cavity of the lower die frame, and the blanking seat is arranged on the lower template; the lower die plate is provided with a material guide through hole for communicating the blanking through hole with the cavity of the lower die frame, and the bottom of the lower die frame is provided with a waste collecting port communicated with the cavity of the lower die frame. When the punching die works, waste materials punched by the punching knife from a finished product of the cup cover fall into the cavity of the lower die frame through the material guiding through holes of the material blanking seat, and then the waste materials in the cavity of the lower die frame are collected through the waste material collecting opening.

In a more preferable scheme, the top surface of the tool apron is in contact fit with the upper die plate, and a gap is formed between the inner side surface of the tool apron and the punching tool mounting block; be equipped with the mounting groove on the top surface of die cutter installation piece, be equipped with a plurality of balls in the mounting groove, each ball all rolls the cooperation with the medial surface of blade holder. When the punching die works, the upper die and the lower die are closed, and the tool apron and the annular pressing die can move relative to the punching tool mounting block in a horizontal plane under the guidance of a finished product of the cup cover on the cup cover-shaped plastic film, so that the finished product of the cup cover on the cup cover-shaped plastic film can smoothly enter the product accommodating cavity on the bottom surface of the tool apron, and the accurate punching and blanking positions of the finished product of the cup cover are ensured. Wherein, each ball can make the removal of blade holder more steady.

In a specific scheme, the punching and blanking integrated die comprises a plurality of punching and blanking devices which are sequentially arranged from left to right. Therefore, the punching and blanking integrated die can complete the punching and blanking processes of a plurality of cup cover finished products at one time, and production efficiency is effectively improved.

The punching and blanking integrated die of the utility model can complete the punching and blanking processes of the cup-cover-shaped plastic film at one time through the matching of the lower die, the upper die, the blanking seat, the punching mounting block, the punching, the annular pressing block, the knife holder, the annular pressing die, the annular laser knife, each first spring and each second spring, thereby saving a station and a set of dies, reducing the occupied mounting space, simplifying the structure of the whole machine and reducing the manufacturing cost of the thermoforming machine; in the die assembly process, the positions of the tool apron and the annular pressing die can deviate along with a finished cup cover product on the cup cover-shaped plastic film, the finished cup cover product can smoothly enter the product accommodating cavity, the finished cup cover product is clamped by the annular pressing block and the blanking seat together, the finished cup cover product is accurately positioned, the punching and blanking positions of the finished cup cover product are accurate, and the quality of the finished cup cover product is guaranteed.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is an enlarged view of fig. 1 at a.

Detailed Description

As shown in fig. 1 and 2, the punching and blanking integrated die of the thermoforming machine comprises a lower die 1, an upper die 2 and at least one punching and blanking device 3, wherein the lower die 1 is arranged right below the upper die 2; the punching and blanking device 3 comprises a blanking seat 31, a stamping knife mounting block 32, a stamping knife 33, an annular pressing block 34, a knife holder 35, an annular pressing die 36, an annular laser knife 37, a plurality of first springs 38 and a plurality of second springs 39, wherein the blanking seat 31 is mounted on the lower die 1, and a blanking through hole 311 in the vertical direction is formed in the blanking seat 31; the stamping knife mounting block 32 is mounted on the upper die 2, the stamping knife 33 is mounted on the stamping knife mounting block 32, and the stamping knife 33 is positioned right above the blanking through hole 311 and matched with the blanking through hole 311; the annular pressing block 34 is sleeved on the punching knife 33 and positioned above the blanking seat 31, a plurality of guide holes (not shown in the figure) are arranged on the bottom surface of the punching knife installation block 32, a guide column 322 which runs up and down is arranged in each guide hole, and the lower end of each guide column 322 is connected with the annular pressing block 34; the number of the first springs 38 is the same as that of the guide posts 322, the first springs 38 correspond to the guide posts 322 one by one, the corresponding guide posts 322 are sleeved with the first springs 38, the lower ends of the first springs 38 are connected or contacted with the annular pressing block 34, and the upper ends of the first springs 38 are connected or contacted with the die cutter mounting block 32; the tool apron 35 is provided with an inner cavity 351, the bottom surface of the annular pressing die 36 is provided with a product accommodating cavity 361, the top of the tool apron 35 is sleeved outside the punching tool mounting block 32 through a mounting hole 352, the annular pressing die 36 is arranged in the inner cavity 351 of the tool apron 35, and the outer side surface of the annular pressing die 36 is matched with the inner side surface of the tool apron 35; an annular laser knife 37 is mounted on the outer side surface of the annular pressing die 36; each second spring 39 is arranged between the die cutter mounting block 32 and the annular pressing die 36 and distributed along the circumferential direction of the die cutter 33, the upper end of the second spring 39 is connected with the die cutter mounting block 32, and the lower end of the second spring 39 is connected with the annular pressing die 36.

In the present embodiment, the upper die 2 includes an upper die frame 21 and an upper die plate 22, the upper die plate 22 is mounted on the upper die frame 21 and located below the upper die frame 21, and the die cutter mounting block 32 is mounted on the upper die plate 21; the lower die 1 comprises a lower die frame 11 and a lower template 12, the lower template 12 is installed on the lower die frame 11 and located above the lower die frame 11, the lower template 12 and the lower die frame 11 jointly enclose a cavity of the lower die frame 11, a material guide through hole 121 for communicating the blanking through hole 311 with the cavity of the lower die frame is arranged on the lower template, and a waste collection port 111 communicated with the cavity of the lower die frame 11 is arranged at the bottom of the lower die frame 11.

In this embodiment, the top surface of the tool holder 35 is in contact fit with the upper die plate 22, and a gap is formed between the inner side surface of the tool holder 35 and the die cutter mounting block 32; the die cutter mounting block 32 is provided with a mounting groove 323 on the top surface thereof, a plurality of balls 324 are provided in the mounting groove 323, and each ball 324 is in rolling fit with the inner side surface of the tool holder 35.

The punching and blanking integrated die of the embodiment comprises a plurality of punching and blanking devices 3, and the punching and blanking devices 3 are arranged in sequence from left to right.

The working principle of the punching and blanking integrated die is briefly described as follows:

the punching and blanking integrated die is arranged behind a die forming device of the thermoforming machine. The mould forming device is used for processing the plastic thin sheet into a cup cover-shaped plastic thin film (namely the plastic thin film with a plurality of cup cover finished products); the product containing cavity 361 is matched with the size of the finished product of the cup cover on the cup cover-shaped plastic film.

When the punching and blanking integrated die works, after the formed cup-cover-shaped plastic film reaches a station of the punching and blanking integrated die, a corresponding cup cover finished product on the cup-cover-shaped plastic film enters between the upper die 2 and the lower die 1; the upper die 2 and the lower die 1 start to be matched, the tool apron 35 and the annular pressing die 36 of each punching and blanking device 3 can move relative to the punching tool mounting block 32 in a horizontal plane under the guidance of the finished product of the cup cover on the cup-shaped plastic film (each ball 324 can enable the tool apron 35 to move more stably) until the finished product of the cup cover on the cup-shaped plastic film completely enters the product accommodating cavity 361 on the bottom surface of the tool apron 35 so as to position the finished product of the cup cover, and meanwhile, the annular pressing block 34 and the top surface of the blanking seat 31 jointly press the finished product of the cup cover under the action of the first spring 38 so as to fix the position of the finished product of the cup cover; then, the upper die 2 and the lower die 1 are continuously closed, the punching knife 33 and the blanking seat 31 move relatively, the cup cover finished product is punched through the punching knife 33 (at this time, the annular pressing block 34 and each guide column 322 on the annular pressing block move towards the punching knife mounting block 32, the first spring 38 is in a compressed state, the lower end of the punching knife 33 enters the blanking through hole 311), and the punched waste falls into the cavity of the lower die frame 11 through the blanking through hole 311 and the material guide through hole 121; and then, continuously closing the upper die 2 and the lower die 1, punching the periphery of the finished cup cover product through the matching between the annular laser knife 37 and the lower die plate, and cutting the punched finished cup cover product out of the cup cover-shaped plastic film.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (4)

1. The utility model provides a blanking integration mould that punches a hole of thermoforming machine, includes lower mould and last mould, and the lower mould is located and is gone up the mould under, its characterized in that: the punching and blanking integrated die also comprises at least one punching and blanking device; the punching and blanking device comprises a blanking seat, a stamping knife mounting block, a stamping knife, an annular pressing block, a knife holder, an annular pressing die, an annular laser knife, a plurality of first springs and a plurality of second springs, wherein the blanking seat is mounted on the lower die and is provided with a blanking through hole in the vertical direction; the stamping knife mounting block is arranged on the upper die, the stamping knife is arranged on the stamping knife mounting block, and the stamping knife is positioned right above the blanking through hole and matched with the blanking through hole; the annular pressing block is sleeved on the punching knife and positioned above the blanking seat, a plurality of guide holes are formed in the bottom surface of the punching knife mounting block, a guide column moving up and down is arranged in each guide hole, and the lower end of each guide column is connected with the annular pressing block; the number of the first springs is the same as that of the guide posts, the first springs correspond to the guide posts one by one, the first springs are sleeved on the corresponding guide posts, the lower ends of the first springs are connected or contacted with the annular pressing block, and the upper ends of the first springs are connected or contacted with the punching knife mounting block; the tool apron is provided with an inner cavity, the bottom surface of the annular pressing die is provided with a product accommodating cavity, the tool apron is sleeved outside the punching tool mounting block, and the annular pressing die is arranged in the inner cavity of the tool apron; the annular laser knife is arranged on the outer side surface of the annular pressing die; each second spring is arranged between the stamping knife mounting block and the annular pressing die and distributed along the circumferential direction of the stamping knife, the upper end of each second spring is connected with the stamping knife mounting block, and the lower end of each second spring is connected with the annular pressing die.

2. The punching and blanking integrated die of the thermoforming machine as recited in claim 1, wherein: the upper die comprises an upper die frame and an upper die plate, the upper die plate is arranged on the upper die frame and is positioned below the upper die frame, and the punching tool mounting block is arranged on the upper die plate; the lower die comprises a lower die frame and a lower template, the lower template is arranged on the lower die frame and is positioned above the lower die frame, the lower template and the lower die frame jointly enclose a cavity of the lower die frame, and the blanking seat is arranged on the lower template; the lower die plate is provided with a material guide through hole for communicating the blanking through hole with the cavity of the lower die frame, and the bottom of the lower die frame is provided with a waste collecting port communicated with the cavity of the lower die frame.

3. The punching and blanking integrated die of the thermoforming machine as recited in claim 2, wherein: the top surface of the tool apron is in contact fit with the upper template, and a gap is formed between the inner side surface of the tool apron and the punching tool mounting block; be equipped with the mounting groove on the top surface of die cutter installation piece, be equipped with a plurality of balls in the mounting groove, each ball all rolls the cooperation with the medial surface of blade holder.

4. The pierce-blanking integrated die of a thermoforming machine as claimed in any of claims 1-3, characterized in that: the punching and blanking integrated die comprises a plurality of punching and blanking units, and the punching and blanking units are sequentially arranged from left to right.

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