CN201320836Y - Hot forming die - Google Patents
Hot forming die Download PDFInfo
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- CN201320836Y CN201320836Y CNU2008202067966U CN200820206796U CN201320836Y CN 201320836 Y CN201320836 Y CN 201320836Y CN U2008202067966 U CNU2008202067966 U CN U2008202067966U CN 200820206796 U CN200820206796 U CN 200820206796U CN 201320836 Y CN201320836 Y CN 201320836Y
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Abstract
The utility model relates to a hot forming die, which comprises an upper die and a lower die. The upper die comprises an upper die plate and an upper cut-off-die, and the upper cut-off-die is installed on the upper die plate; the lower die comprises a lower die plate, a lower cut-off-die and a forming die, and the lower cut-off-die is fixedly installed on the lower die plate; the hot forming die is characterized in that the forming die comprises a side die, a first movable die capable of lifting corresponding to the side die, and a second movable die capable of lifting corresponding to the side die and the first movable die; the side die is fixedly installed on the lower die plate and positioned on the inner side of the lower cut-off-die, the first movable die is arranged on the inner side of the side die, and the second movable die is arranged on the inner side of the first movable die. When the hot forming die is removed, firstly the first movable die rises corresponding to the side die and the lower cut-off-die, so as to lead the edge of plastic ware to separate from the side die; and then the second movable rises corresponding to the first movable die, the side die and the lower cut-off-die, so as to push the plastic ware out and lead the whole plastic ware to separate from the forming die, thereby smoothly completing the demoulding process; deformation or damage is avoided from the plastic ware, thereby ensuring the quality of products.
Description
Technical field
The utility model relates to thermal forming device, specifically, relates to a kind of hot forming tool that is used for thermoforming machine.
Background technology
Existing a kind of hot forming tool that is used to make plastic products (as plastic cup, plastics box, plastic closure etc.) can be finished moulding, shear action, can obtain goods after the demoulding.
This hot forming tool comprises upper die and lower die.
Patrix generally includes cope match-plate pattern, goes up cut-off-die and binder ring.Last cut-off-die is installed on the cope match-plate pattern, and last cut-off-die has a cavity, and the inner edge of going up the cut-off-die lower end usually is last shearing knife edge.The binder ring can move up and down in the cavity of last cut-off-die, and the binder ring is pressed on sheet material on the counterdie during matched moulds; The compression spring is housed between binder ring and the cope match-plate pattern, and the compression spring shrinks and binder pressure is provided during matched moulds; Also can be provided with sealing ring in the binder ring outside, make the binder ring upper end and the cavity inner wall of last cut-off-die form pressure air chamber, pressure air chamber feeds Compressed Gas and binder pressure is provided during matched moulds.For the plastic products that have than the deep space chamber, the edge of plastic products has enough sheet materials to stretch when making moulding, make its draw ratio smaller, thereby make the sheet thickness at the sheet thickness at plastic products edge and other positions approaching, make the strength ratio at plastic products edge better, patrix also comprises the stretching bar, and the stretching bar can move up and down; Stretching bar lower end connects stretching head, and stretching head is located in the cavity of cut-off-die, and under the drive of stretching bar, stretching head can move up and down in the cavity of last cut-off-die; Stretching bar upper end connects stretching bar installing plate, stretching bar installing plate connects the piston rod of draft cylinder, draft cylinder is used to drive the stretching bar and moves up and down, when draft cylinder drive stretching bar installing plate, stretching bar and stretching head down move, plastic sheet tentatively is drawn into and the stretching head similar shapes.
Counterdie comprises lower bolster, following cut-off-die, shaping mould and knock-pin.Following cut-off-die is fixedly mounted on the lower bolster, and following cut-off-die has a cavity, and descending the outer rim of cut-off-die upper end usually is the down cut blade, and down cut blade and last shearing knife edge are complementary.Shaping mould is fixedly mounted on the lower bolster and is in the cavity of following cut-off-die; The bottom of shaping mould is provided with movable bed die, and movable bed die is connected with the upper end of knock-pin, and the lower end of knock-pin extend out to the lower bolster below and connects the knock-pin installing plate, and the knock-pin installing plate is connected with the knock-pin lift drive mechanism.In addition,, recirculated cooling water road in the mould is set also usually, shaping mould and movable bed die are cooled off, make the goods fast cooling shaping for shortening molding cycle.
When making plastic products, at first, make plastic sheet reach forming temperature to the plastic sheet heating; Through the plastic sheet process forming area of heating, hot forming tool matched moulds at this moment.For positive pressure thermoforming, between plastic sheet and last cut-off-die (or binder ring), form the moulding air chamber, in the moulding air chamber, feed compressed air then, under compressed-air actuated effect, plastic sheet is close to shaping mould; For the negative pressure thermoforming, then between plastic sheet and shaping mould, form the moulding air chamber, extract the gas in the moulding air chamber then, make the moulding air chamber present vacuum state, plastic sheet is close to shaping mould.Cool off shaping mould on the recirculated cooling water road in the mould subsequently, and formed sheet is formalized.Formed sheet after the setting is finished shear action by last shearing knife edge and down cut blade, and plastic products are sheared from formed sheet, obtains single plastic products.Then the knock-pin lift drive mechanism drives knock-pin installing plate, knock-pin and the rising of movable bed die, and plastic products are ejected from shaping mould, makes plastic products be detached into pattern; Then to plastic products blowings, with the plastic products hot forming tool that blows off.
During this hot forming tool demoulding, rely on the thrust of knock-pin that plastic products are ejected from shaping mould, finish demoulding action, but, some plastic products need cooperate with other plastic products, for example cover the opening of plastic cup or plastics box with plastic closure, in order to make plastic closure and plastic cup or plastics box fastening and to keep good sealing, must mold the left-hand thread structure in the opening outer of plastic cup or plastics box, perhaps mold several projections at the plastic closure edge, like this, the left-hand thread structure of shearing back plastic cup or the plastics box corresponding position of shaping mould of linking closely, perhaps the projection on the plastic closure is inserted in the shaping mould corresponding grooves, if when the demoulding, directly adopt knock-pin to eject these plastic products, the left-hand thread structure or the projection of plastic products are broken away from from shaping mould, eject and be easy to cause plastic products distortion or damage in the process, produce a large amount of substandard products and waste product.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of hot forming tool that can make the smooth demoulding of plastic products.The technical scheme that adopts is as follows:
A kind of hot forming tool comprises upper die and lower die; Patrix comprises cope match-plate pattern and last cut-off-die, and last cut-off-die is installed on the cope match-plate pattern; Counterdie comprises lower bolster, following cut-off-die and shaping mould, following cut-off-die is fixedly mounted on the lower bolster, it is characterized in that: described shaping mould comprise the limit mould, can be with respect to first movable mold of limit mould lifting and can be with respect to second movable mold of the Bian Mo and the first movable mold lifting, the limit mould is fixedly mounted on the lower bolster and is in the inboard of cut-off-die down, first movable mold is located at the inboard of limit mould, and second movable mold is located at the inboard of first movable mold.
When shaping mould was in the moulding desired position, limit mould, first movable mold and second movable mold are common to be constituted and the corresponding shaping mould of plastic products.
During moulding, can be fixed on the frame by patrix, counterdie is with respect to the patrix lifting; Also can be fixed on the frame by counterdie, patrix is with respect to the patrix lifting.
In a kind of concrete scheme, adopt the lifting of following structure control first movable mold and second movable mold, preferred above-mentioned counterdie also comprises knock-pin and knock-pin installing plate, and second movable mold is connected with the upper end of knock-pin, and the lower end of knock-pin extend out to the lower bolster below and connects the knock-pin installing plate; The knock-pin outside is socketed with guide pin bushing and compression spring, and the upper end of guide pin bushing is connected with first movable mold, and the compression spring is located between the lower end and knock-pin installing plate of guide pin bushing; The lower end of guide pin bushing is equipped with limit base, also is provided with stop collar (stop collar can be fixedly mounted on down in the cavity of cut-off-die) on the counterdie, and it is corresponding with limit base that stop collar is in the top and the position of limit base.
Be fixed on the frame and under the situation of counterdie with respect to the patrix lifting at patrix, on frame, be provided with and stop column, stop that column is located at the below of knock-pin installing plate, during the demoulding, counterdie descends, when the knock-pin installing plate touches when stopping column, the knock-pin installing plate no longer descends, this moment, counterdie continued to descend, and cut-off-die rose under the knock-pin and second movable mold reached with respect to Bian Mo, simultaneously, under the effect of compression spring, the guide pin bushing and first movable mold also reach cut-off-die rising down with respect to Bian Mo, and synchronous with second movable mold, make the edge of plastic products break away from the limit mould; Limit base touches after the stop collar, the guide pin bushing and first movable mold are no longer with respect to Bian Mo and cut-off-die rising down, the knock-pin and second movable mold then continue with respect to Bian Mo and cut-off-die rising down (this moment, second movable mold rose with respect to first movable mold), and plastic products are ejected.
Be fixed on the frame and under the situation of patrix with respect to the counterdie lifting, above-mentioned counterdie also comprises the knock-pin lift drive mechanism at counterdie, the knock-pin installing plate is connected with the knock-pin lift drive mechanism.During the demoulding, under the effect of knock-pin lift drive mechanism, knock-pin and second movable mold rise, and simultaneously, under the effect of compression spring, the guide pin bushing and first movable mold be along with rising, and synchronous with second movable mold, makes the edge of plastic products break away from the limit mould; Limit base touches after the stop collar, and the guide pin bushing and first movable mold no longer rise, and the knock-pin and second movable mold then continue to rise, and plastic products are ejected.
In the concrete scheme of another kind, also can adopt the lifting of following structure control first movable mold and second movable mold, on above-mentioned lower bolster, be provided with first cylinder that moves towards up and down and second cylinder that moves towards up and down, the cylinder body of first cylinder and second cylinder is installed on the lower bolster, the piston rod of first cylinder is connected with first movable mold, and the piston rod of second cylinder is connected with second movable mold.By the stroke of first cylinder and second cylinder is set, the length that length that the piston rod of second cylinder in the knockout course stretches out is stretched out greater than the piston rod of first cylinder, can realize the secondary demoulding, promptly at first order knockout course, first movable mold and second movable mold rise synchronously, perhaps first movable mold rises, and makes the edge of plastic products break away from the limit mould; At second level knockout course, second movable mold rises, and plastic products are ejected.
In order to make first movable mold and the lifting more reposefully of second movable mold, the madial wall of above-mentioned limit mould and the lateral wall of first movable mold are complementary, first movable mold and limit mould are slidingly matched, and that is to say the lifting reposefully of bootable first movable mold of the madial wall of limit mould.
In addition,, mold cools down mechanism is set also usually, shaping mould is cooled off, make the goods fast cooling shaping for shortening molding cycle.In a concrete scheme, mold cools down mechanism comprises the cooling jacket of being located at first movable mold below and being close to first movable mold, and is located at the cooling-water duct in second movable mold, is respectively applied for first movable mold and second movable mold are cooled off; In addition, in the cavity of following cut-off-die, also can be provided with second cooling jacket, constitute second cooling-water duct between the inwall of second cooling jacket and following cut-off-die, when cooling water flows in second cooling-water duct, can be by the conduction of heat of second cooling jacket, take away down the heat in the cavity of cut-off-die, make down various parts coolings in the cavity of cut-off-die.
Usually the inner edge of going up the cut-off-die lower end is last shearing knife edge, and the outer rim of following cut-off-die upper end is the down cut blade, and down cut blade and last shearing knife edge are complementary.
In preferred version, sheet material is pressed on the counterdie when making matched moulds, preferably goes up cut-off-die and has a cavity, is provided with the binder ring in the cavity of last cut-off-die, binder ring and last cut-off-die are slidingly matched, the lower surface of binder ring be complementary with the upper surface of following cut-off-die and the position corresponding.Above-mentioned binder ring can move up and down in the cavity of last cut-off-die.When patrix separated with counterdie, under the gravity effect, cut-off-die was stretched out in the lower end of binder ring.
In a kind of concrete scheme, the inside sidewalls of last cut-off-die is provided with a step, the top outer of binder ring is provided with a convex edge, the convex edge is on the step and with step and is complementary, the binder ring descended under the gravity effect when patrix separated with counterdie, when the convex edge downside touched step, the binder ring no longer descended.
In a kind of concrete scheme, be provided with the second compression spring between binder ring and the cope match-plate pattern, the upper end of the second compression spring contacts with cope match-plate pattern, the lower end of the second compression spring and the last end in contact of binder ring; The second compression spring shrinks and binder pressure is provided during matched moulds.When adopting positive pressure thermoforming technology, between the inside sidewalls of the binder ring outside and last cut-off-die, be provided with sealing ring; The sidewall of last cut-off-die is provided with the Compressed Gas admission passage, and the Compressed Gas admission passage is communicated with the cavity of last cut-off-die; During the hot forming tool matched moulds, circulating application adds downward thrust to the second compression spring to binder, the binder ring is pressed on down sheet material on the upper surface of cut-off-die, between the cavity of plastic sheet and last cut-off-die, form the moulding air chamber, the compressed gas admission passage of compressed air enters in the moulding air chamber, under compressed-air actuated effect, plastic sheet is close to shaping mould, becomes goods through the cooling afterboarding.
In the concrete scheme of another kind, there is sealing ring in the binder ring outside, and the binder ring has a upper surface, makes the cavity inner wall formation pressure air chamber of binder ring upper surface and last cut-off-die.When patrix and counterdie matched moulds, feed Compressed Gas in the pressure air chamber, circulating application adds downward thrust to Compressed Gas to binder, and the binder ring is pressed on down sheet material on the cut-off-die.By regulating the air pressure of Compressed Gas, the pressure of adjustable seamless material ring.When adopting positive pressure thermoforming technology, the binder ring has a cavity, and the sidewall of last cut-off-die is provided with the Compressed Gas admission passage, and the sidewall of binder ring is provided with at least one air inlet, and air inlet is communicated with the cavity of Compressed Gas admission passage with the binder ring; During the hot forming tool matched moulds, the binder ring is pressed on down sheet material on the upper surface of cut-off-die, between plastic sheet and binder ring cavity body, form the moulding air chamber, the compressed gas admission passage of compressed air, air inlet enter in the moulding air chamber, under compressed-air actuated effect, plastic sheet is close to shaping mould, becomes goods through the cooling afterboarding.
Making plastic cup; when plastics boxes etc. have the plastic products of dark cavity; the edge of plastic products has enough sheet materials to stretch when making moulding; make its draw ratio smaller; thereby make the sheet thickness at the sheet thickness at plastic products edge and other positions approaching; make the strength ratio at plastic products edge better; preferred patrix also comprises stretching head; the stretching bar; stretching bar installing plate and draft cylinder; stretching bar lower end connects stretching head; stretching head is located in the cavity of binder ring; stretching bar upper end connects stretching bar installing plate, and stretching bar installing plate connects the piston rod of draft cylinder.The cylinder body of draft cylinder can be installed on the cope match-plate pattern; Under patrix was fixed on situation on the frame, the cylinder body of draft cylinder also can be installed on the frame.Draft cylinder is used to drive the stretching bar and moves up and down; Under the drive of stretching bar, stretching head can move up and down in the cavity of binder ring.The shape and the article shape of stretching head are similar, and undersized is in goods, and the surface of stretching head is normally smooth.During matched moulds, under the drive of stretching bar, stretching head is motion downwards in the cavity of binder ring, and sheet material is carried out prestretched, makes sheet form and size and goods approaching, and then further moulding.
When needing one or more hole is set on the plastic products (as plastic closure, plastics box); preferred above-mentioned hot forming tool is provided with hole punched device; hole punched device comprises punching cutter and chopping block; the punching cutter is located on patrix or the counterdie; chopping block is located on counterdie or the patrix accordingly, and chopping block is aimed at mutually with the punching cutter position.In a concrete scheme, last cut-off-die has a cavity, and the punching cutter is located in the cavity of cut-off-die; Chopping block is located at (according to the position in hole, chopping block can be located on first movable mold or second movable mold usually) on the shaping mould.In another concrete scheme, last cut-off-die has a cavity, and chopping block is located in the cavity of cut-off-die; The punching cutter is located at (according to the position in hole, the punching cutter can be located on first movable mold or second movable mold usually) on the shaping mould.
The utility model is in the process of making plastic products, during the demoulding, at first first movable mold is with respect to Bian Mo and cut-off-die rising down, make the edge of plastic products break away from the limit mould, second movable mold reaches cut-off-die and rising down with respect to first movable mold, Bian Mo then, and plastic products are ejected, whole plastic products and shaping mould are separated, thereby successfully finish knockout course, and avoid plastic products distortion or damage, guarantee product quality.
Description of drawings
Fig. 1 is the structural representation (die opening state) of the utility model preferred embodiment;
Fig. 2 is the structural representation of hot forming tool matched moulds state shown in Figure 1.
The specific embodiment
As depicted in figs. 1 and 2, this hot forming tool comprises patrix 1 and counterdie 2.During moulding, patrix 1 is fixed on the frame, and counterdie 2 is with respect to patrix 1 lifting.
Patrix 1 comprises cope match-plate pattern 3 and last cut-off-die 4, and last cut-off-die 4 is installed on the cope match-plate pattern 3.
The inner edge of last cut-off-die 4 lower ends is last shearing knife edge.Last cut-off-die 4 has cavity 5, is provided with binder ring 6 in the cavity 5 of last cut-off-die 4, and binder ring 6 is slidingly matched with last cut-off-die 4, the lower surface of binder ring 6 be complementary with the upper surface of following cut-off-die 13 and the position corresponding.The inside sidewalls of last cut-off-die 4 is provided with step 7, and the top outer of binder ring 6 is provided with convex edge 8, and convex edge 8 is on the step 7 and with step 7 and is complementary.Binder ring 6 can move up and down in the cavity 5 of last cut-off-die 4.When patrix 1 separated with counterdie 2, under the gravity effect, binder ring 6 descends and cut-off-die 4 is stretched out in its lower end; When convex edge 8 downsides touched step 7, binder ring 6 no longer descended.
Be provided with sealing ring 9 between the inside sidewalls of binder ring 6 outsides and last cut-off-die 4; The sidewall of last cut-off-die 4 is provided with Compressed Gas admission passage 10, and Compressed Gas admission passage 10 is communicated with the cavity 5 of last cut-off-die 4.
The upper end that is provided with the second compression spring, 11, the second compression springs 11 between binder ring 6 and the cope match-plate pattern 3 contacts the lower end of the second compression spring 11 and the last end in contact of binder ring 6 with cope match-plate pattern 3; The second compression spring 11 shrinks and binder pressure is provided during matched moulds.
Counterdie 2 comprises that also knock-pin 17 and knock-pin installing plate 18, the second movable mold 16 are connected with the upper end of knock-pin 17, and the lower end of knock-pin 17 extend out to lower bolster 12 belows and connects knock-pin installing plate 18; Knock-pin 17 outsides are socketed with guide pin bushing 19 and compression spring 20, the upper end of guide pin bushing 19 is connected (in the present embodiment with first movable mold 15, the upper end of guide pin bushing 19 is connected with first movable mold 15 by cooling jacket 24), compression spring 20 is located between the lower end and knock-pin installing plate 18 of guide pin bushing 19; The lower end of guide pin bushing 19 is equipped with limit base 21, also is provided with stop collar 22 on the counterdie 2, and stop collar 22 is fixedly mounted on down in the cavity of cut-off-die 13, and it is corresponding with limit base 21 that stop collar 22 is in the top and the position of limit base 21.On frame, be provided with and stop column, stop that column is located at the below of knock-pin installing plate 18.In the present embodiment, knock-pin installing plate 18 is provided with spring base 23, and the lower end of compression spring 20 is installed on the spring base 23, and the upper end of compression spring 20 contacts with limit base 21.
This hot forming tool also is provided with hole punched device, and hole punched device comprises punching cutter 28 and chopping block 29, and punching cutter 28 is located in the cavity 5 of cut-off-die 4, and chopping block 29 is located on second movable mold 16, and chopping block 29 is aimed at mutually with punching cutter 28 positions.
Hole punched device also comprises punching knife up degree position adjusting mechanism, punching knife up degree position adjusting mechanism comprises nut seat 30 and lifting screw 31, nut seat 30 is fixedly mounted on the cope match-plate pattern 3, be provided with up and down the screw of trend in the nut seat 30, lifting screw 31 be located in the screw of nut seat 30 and with nut seat 30 engagements; Be provided with spring mounting hole 32 in the lifting screw 31, the two ends that wedge 33 behind the spring, the 3rd compression spring 34 and punching knife rest 35, the three compression springs 34 are installed in the spring mounting hole 32 from top to bottom successively respectively with spring after wedge 33 contact with punching knife rest 35; Spring mounting hole 32 lower ends are equipped with the knife rest nut seat 36 that is used to support punching knife rest 35, and the lower end of punching knife rest 35 extend out to the below of knife rest nut seat 36; Punching cutter 28 is installed in punching knife rest 35 lower ends.Wedge 33 is slidingly matched with the inwall of spring mounting hole 32 behind the spring, and the top of lifting screw 31 is provided with screw, and adjusting screw(rod) 37 is installed in the screw, and the lower end of adjusting screw(rod) 37 contacts with wedge 33 behind the spring.
Brief description is the operation principle of this hot forming tool once:
Before the production, regulate the height and position at punching cutter 28 places by punching knife up degree position adjusting mechanism, make its with plastic products on need the position of punching corresponding; Regulate the pressure that the 3rd compression spring 34 is applied to punching knife rest 35 by adjusting screw(rod) 37, make the impulsive force size to fit between punching cutter 28 and the chopping block.
When making plastic products, at first, make plastic sheet reach forming temperature to the plastic sheet heating; Plastic sheet process forming area through heating, counterdie 2 risings this moment, the hot forming tool matched moulds, 11 pairs of binder rings 6 of the second compression spring apply downward thrust, binder ring 6 is pressed on down sheet material on the upper surface of cut-off-die 13, between the cavity 5 of plastic sheet and last cut-off-die 4, forms the moulding air chamber; The compressed gas admission passage 10 of compressed air enters in the above-mentioned moulding air chamber then, and under compressed-air actuated effect, plastic sheet is close to shaping mould; Cooling jacket 24 and cooling-water duct 25 feed cooling water subsequently, respectively first movable mold 15 and second movable mold 16 are cooled off, and formed sheet is formalized; Then counterdie 2 further rises again, chopping block 29 cooperates with punching cutter 28, formed sheet after the setting is carried out punching, simultaneously, the down cut blade of following cut-off-die 13 upper end outer rims cooperates with the last shearing knife edge of last cut-off-die 4 lower end inner edges, formed sheet after the setting is sheared, plastic products are sheared from formed sheet, obtain the single plastic products that have the hole; Counterdie 2 descends subsequently, and the edge of plastic products leaves binder ring 6; Then counterdie 2 continues to descend, when knock-pin installing plate 18 touches when stopping column, knock-pin installing plate 18 no longer descends, this moment, lower bolster 12 continuation descended, and cut-off-die 13 rose under the knock-pin 17 and second movable mold 16 reached with respect to limit mould 14, simultaneously, under the effect of compression spring 20, the guide pin bushing 19 and first movable mold 15 also reach cut-off-die 13 risings down with respect to limit mould 14, and synchronous with second movable mold 16, make the edge of plastic products break away from limit mould 14; Then lower bolster 12 continues to descend, after limit base 21 touches stop collar 22, the guide pin bushing 19 and first movable mold 15 are no longer with respect to limit mould 14 and cut-off-die 13 risings down (being that the guide pin bushing 19 and first movable mold 15 are along with lower bolster 12 descends), the knock-pin 17 and second movable mold 16 then continuation reach cut-off-die 13 risings down with respect to limit mould 14, this moment, second movable mold 16 rose with respect to first movable mold 15, and plastic products are ejected; Then to plastic products blowings,, thereby finish the one-step hot moulding process with the plastic products hot forming tool that blows off.Then lower bolster 12 rises, and makes first movable mold 15 and second movable mold 16 return back to the moulding desired position, prepares thermoforming process next time.
In addition, when producing the plastic products that need not punch, punching cutter 28 can be adjusted to more than a certain height, punching cutter 28 can not be impacted with chopping block 29.
In other embodiments, also can adopt the lifting of following structure control first movable mold and second movable mold, on above-mentioned lower bolster, be provided with first cylinder that moves towards up and down and second cylinder that moves towards up and down, the cylinder body of first cylinder and second cylinder is installed on the lower bolster, the piston rod of first cylinder is connected with first movable mold, and the piston rod of second cylinder is connected with second movable mold.By the stroke of first cylinder and second cylinder is set, the length that length that the piston rod of second cylinder in the knockout course stretches out is stretched out greater than the piston rod of first cylinder, can realize the secondary demoulding, promptly at first order knockout course, first movable mold and second movable mold rise synchronously, perhaps first movable mold rises, and makes the edge of plastic products break away from the limit mould; At second level knockout course, second movable mold rises, and plastic products are ejected.
In other embodiments; making plastic cup; when plastics boxes etc. have the plastic products of dark cavity; the edge of plastic products has enough sheet materials to stretch when making moulding; make its draw ratio smaller; thereby make the sheet thickness at the sheet thickness at plastic products edge and other positions approaching; make the strength ratio at plastic products edge better; patrix also comprises stretching head; the stretching bar; stretching bar installing plate and draft cylinder; stretching bar lower end connects stretching head; stretching head is located in the cavity of binder ring; stretching bar upper end connects stretching bar installing plate, and stretching bar installing plate connects the piston rod of draft cylinder.The cylinder body of draft cylinder can be installed on the cope match-plate pattern; Under patrix was fixed on situation on the frame, the cylinder body of draft cylinder also can be installed on the frame.Draft cylinder is used to drive the stretching bar and moves up and down; Under the drive of stretching bar, stretching head can move up and down in the cavity of binder ring.The shape and the article shape of stretching head are similar, and undersized is in goods, and the surface of stretching head is normally smooth.During matched moulds, under the drive of stretching bar, stretching head is motion downwards in the cavity of binder ring, and sheet material is carried out prestretched, makes sheet form and size and goods approaching, and then further moulding.
In other embodiments, in the hole punched device, chopping block is located in the cavity of cut-off-die, and the punching cutter is located at (according to the position in hole, the punching cutter can be located on first movable mold or second movable mold usually) on the shaping mould.
Claims (10)
1, a kind of hot forming tool comprises upper die and lower die; Patrix comprises cope match-plate pattern and last cut-off-die, and last cut-off-die is installed on the cope match-plate pattern; Counterdie comprises lower bolster, following cut-off-die and shaping mould, following cut-off-die is fixedly mounted on the lower bolster, it is characterized in that: described shaping mould comprise the limit mould, can be with respect to first movable mold of limit mould lifting and can be with respect to second movable mold of the Bian Mo and the first movable mold lifting, the limit mould is fixedly mounted on the lower bolster and is in the inboard of cut-off-die down, first movable mold is located at the inboard of limit mould, and second movable mold is located at the inboard of first movable mold.
2, hot forming tool according to claim 1 is characterized in that: described counterdie also comprises knock-pin and knock-pin installing plate, and second movable mold is connected with the upper end of knock-pin, and the lower end of knock-pin extend out to the lower bolster below and connects the knock-pin installing plate; The knock-pin outside is socketed with guide pin bushing and compression spring, and the upper end of guide pin bushing is connected with first movable mold, and the compression spring is located between the lower end and knock-pin installing plate of guide pin bushing; The lower end of guide pin bushing is equipped with limit base, also is provided with stop collar on the counterdie, and it is corresponding with limit base that stop collar is in the top and the position of limit base.
3, hot forming tool according to claim 1, it is characterized in that: described lower bolster is provided with first cylinder that moves towards up and down and second cylinder that moves towards up and down, the cylinder body of first cylinder and second cylinder is installed on the lower bolster, the piston rod of first cylinder is connected with first movable mold, and the piston rod of second cylinder is connected with second movable mold.
4, according to each described hot forming tool of claim 1-3, it is characterized in that: the madial wall of described limit mould and the lateral wall of first movable mold are complementary, and first movable mold and limit mould are slidingly matched.
5, according to each described hot forming tool of claim 1-3, it is characterized in that: the described cut-off-die of going up has a cavity, be provided with the binder ring in the cavity of last cut-off-die, binder ring and last cut-off-die are slidingly matched, the lower surface of binder ring be complementary with the upper surface of following cut-off-die and the position corresponding.
6, hot forming tool according to claim 5 is characterized in that: the described inside sidewalls that goes up cut-off-die is provided with a step, and the top outer of binder ring is provided with a convex edge, and the convex edge is on the step and with step and is complementary.
7, hot forming tool according to claim 6 is characterized in that: be provided with the second compression spring between described binder ring and the cope match-plate pattern, the upper end of the second compression spring contacts with cope match-plate pattern, the lower end of the second compression spring and the last end in contact of binder ring.
8, according to each described hot forming tool of claim 1-3; it is characterized in that: described hot forming tool also is provided with hole punched device; hole punched device comprises punching cutter and chopping block; the punching cutter is located on patrix or the counterdie; chopping block is located on counterdie or the patrix accordingly, and chopping block is aimed at mutually with the punching cutter position.
9, hot forming tool according to claim 8 is characterized in that: the described cut-off-die of going up has a cavity, and the punching cutter is located in the cavity of cut-off-die; Chopping block is located on the shaping mould.
10, hot forming tool according to claim 8 is characterized in that: the described cut-off-die of going up has a cavity, and chopping block is located in the cavity of cut-off-die; The punching cutter is located on the shaping mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202067966U CN201320836Y (en) | 2008-12-31 | 2008-12-31 | Hot forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202067966U CN201320836Y (en) | 2008-12-31 | 2008-12-31 | Hot forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201320836Y true CN201320836Y (en) | 2009-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202067966U Expired - Fee Related CN201320836Y (en) | 2008-12-31 | 2008-12-31 | Hot forming die |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112153A (en) * | 2013-03-12 | 2013-05-22 | 广东达诚机械有限公司 | Thermal forming die |
| CN103213271A (en) * | 2013-04-27 | 2013-07-24 | 广东达诚机械有限公司 | Thermal forming mould |
| CN108189375A (en) * | 2018-01-08 | 2018-06-22 | 浙江新天力容器科技有限公司 | A kind of mould inscribe thermoforming mould of gas spring power-assisted |
-
2008
- 2008-12-31 CN CNU2008202067966U patent/CN201320836Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112153A (en) * | 2013-03-12 | 2013-05-22 | 广东达诚机械有限公司 | Thermal forming die |
| CN103112153B (en) * | 2013-03-12 | 2015-06-17 | 广东达诚机械有限公司 | Thermal forming die |
| CN103213271A (en) * | 2013-04-27 | 2013-07-24 | 广东达诚机械有限公司 | Thermal forming mould |
| CN103213271B (en) * | 2013-04-27 | 2015-07-22 | 广东达诚机械有限公司 | Thermal forming mould |
| CN108189375A (en) * | 2018-01-08 | 2018-06-22 | 浙江新天力容器科技有限公司 | A kind of mould inscribe thermoforming mould of gas spring power-assisted |
| CN108189375B (en) * | 2018-01-08 | 2023-09-12 | 新天力科技股份有限公司 | Air spring-assisted in-mold cutting hot forming die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20171231 |