CN209969301U - Nested formula bellows forming die that opens and shuts - Google Patents

Abstract

The utility model discloses a nested formula bellows forming die that opens and shuts, including lower die body, middle die body, go up the nested a plurality of die sleeves of die body and inside and outside activity, a top pushes away hydro-cylinder is respectively installed to the lower die frame left and right sides, about two middle die bodies be connected with two top pushes away hydro-cylinders through a connecting rod respectively, about two middle die bodies be equipped with compound die convex ridge and the compound die recess of gomphosis location when the compound die respectively, about two middle die body movable positioning between die body and last die body down, about two middle die bodies through the excircle convex ridge cooperation of interior round recess with the outside die sleeve, make the outside die sleeve can be in the middle die body about freely sliding, interior round recess is as high as middle die body, excircle convex ridge is as high as the outside die sleeve, inside and outside two die sleeve height difference just. The utility model discloses make the mould that opens and shuts realize automaticly, reduced the form removal process, make things convenient for the last unloading of pipe with the setting of pipe mounting hole on the planker, improved production efficiency.

Description

Nested formula bellows forming die that opens and shuts

Technical Field

The utility model relates to a corrugated metal pipe processing technology field especially relates to bellows forming die.

Background

The existing corrugated pipe forming machine is a device which generates hydraulic pressure by an oil pump unit and controls hydraulic fittings such as an electromagnetic valve, an oil cylinder and the like through an electric control system so as to drive mechanical parts to perform hydraulic forming. In the process of forming the corrugated pipe, the traditional forming equipment has the characteristics of simple operation and low price, but the traditional forming equipment has some defects in safety and design. Wherein, the positioning effect of the mutually independent sleeve of bellows shaping die on the pipe excircle is not good, needs the manual work at every turn to dismantle the die for production efficiency is not high, and the bellows axiality of making is relatively poor and external diameter size is uneven, has influenced the shaping quality of bellows.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the low and poor problem in location of current forming die production efficiency, provide a bellows forming die high-efficient and that the location is accurate.

In order to solve the technical problem, the utility model adopts the following technical scheme: a nested type folding corrugated pipe forming die comprises a die frame base fixed on a frame, a lower die frame fixed on the die frame base, a carriage sliding linearly along the die frame base, and a die body assembly arranged on the carriage, wherein the die body assembly comprises a lower die body, a middle die body, an upper die body and a plurality of die sleeves movably nested inside and outside, the left side and the right side of the lower die frame are respectively provided with a pushing oil cylinder, the left middle die body and the right middle die body are respectively connected with the two pushing oil cylinders through a connecting rod, the left middle die body and the right middle die body are respectively provided with a die assembly convex ridge and a die assembly groove which are embedded and positioned during die assembly, the left middle die body and the right middle die body are movably positioned between the lower die body and the upper die body, the left middle die body and the right middle die body are matched with an excircle convex ridge of an, the die sleeve is characterized in that the inner die sleeve and the outer die sleeve are different in height and are positioned through a groove and a convex ridge, a die sheet is fixed on the lower end face of each die sleeve, the die sheet is provided with a guide post hole, a supporting spring penetrates through the guide post hole, the bottom of each die sleeve is provided with a counter bore, one end of each supporting spring is directly connected to the bottom of the counter bore of the corresponding die sleeve, one end of each supporting spring is sleeved outside the corresponding guide post, the supporting spring is used for providing resetting elasticity for each die sleeve so that the upper part of each die sleeve is propped against the; the pipe is arranged between the left middle die body and the right middle die body, the oil filling device is locked on the base through bottom die threads, the base is fixed on the planker, the bottom die is provided with an embedded groove, an embedded alloy is embedded in the bottom die, a gap is reserved between the inner circle of the embedded alloy and the outer circle of the oil filling device and used for installing the pipe, the planker of the oil filling device is provided with an oil inlet hole, and the oil outlet end of the oil inlet hole is connected with the oil.

Optionally, the base is fixed on the carriage through a hexagon socket head cap screw, and the contact end face is sealed by an O-shaped sealing ring.

Optionally, the die plate is fixed on the lower end face of the die sleeve by using a flat head screw and a pin.

Optionally, the carriage is provided with a handle.

The utility model adopts the above technical scheme, following beneficial effect has: the die body is connected with the pushing oil cylinder, so that the die opening and closing are automated, the die removing process is reduced, the tube blank mounting holes are formed in the planker, the feeding and discharging of tubes are facilitated, and the production efficiency is improved; the integration of the die piece die sleeve ensures the coaxiality and the outer diameter of the corrugated pipe.

The specific technical solution and the advantages of the present invention will be described in detail in the following detailed description with reference to the accompanying drawings.

Drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

fig. 1 is an application schematic diagram of a preferred embodiment of a nested open-close corrugated pipe forming die of the present invention;

FIG. 2 is a sectional view of a nested open-close bellows forming die;

FIG. 3 is a schematic diagram of the left side die body pin, grub screw and guide post arrangement with the die removed;

fig. 4 is a schematic view of the mounting of the support spring and guide post.

In the figure: 1. the oil tank, 2, 1# oil pump unit, 3, 1# main oil pipe, 4, 2# main oil pipe, 5, 3# main oil pipe, 6, 1# pressure gauge, 7, 1# superposition valve set, 8, 2# pressure gauge, 9, 2# superposition valve set, 10, 1# intermediate relay, 11, 1# oil inlet pipe, 12, 1# oil return pipe, 13, 2# oil inlet pipe, 14, 2# oil return pipe, 15, 3# superposition valve set, 16, 2# intermediate relay, 17, 2# oil pump unit, 18, 4# main oil pipe, 19, 3# pressure gauge, 20, filter, 21, pressure sensor, 22, frame oil return pipe, 23, carriage oil pipe, 24, 1# jacking oil pipe, 25, 1# jacking oil return pipe, 26, 2# jacking oil inlet pipe, 27, 2# jacking oil return pipe, 28, top oil cylinder, 29, upper die frame, 30, lower die frame, 31 # jacking oil return pipe, 13, 2# jacking oil return pipe, 28, A pushing oil cylinder, 32, a connecting rod, 33, an intermediate die body, 34, a handle, 35, a planker, 36, a control electric box, 37, a die carrier base, 38, a frame, 39, an operation panel, 40, a hexagon bolt, 41, a stroke nut, 42, a pressure spring, 43, an adjusting bolt, 44, a # 1 locking nut, 45, a # 2 locking nut, 46, an upper base, 47, a lower punching stud, 48, an upper die head, 49, a # 3 die sleeve, 50, a # 2 die sleeve, 51, a # 1 die sleeve, 52, a # 3 die, 53, a # 2 die, 54, a # 1 die, 55, a supporting spring, 56, a round head guide post, 57, a lower die body, 58, an upper die body, 59, a pressing plate, 60, a tube blank, 61, an embedded alloy, 62, a bottom die, 63, an oil charger, 64, an inner hexagon screw, 65, a base, 66, an O-shaped sealing ring, 67, an oil inlet, 68, an outer convex ridge, 69 and, 70. grub screw, 71, matched mould convex ridge, 72, matched mould groove, 73, pin, 74 and guide post hole.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the corrugated pipe forming mold is mainly used for a corrugated pipe forming machine with die anti-damage function, and functions are realized through a hydraulic transmission system. A die set base 37 fixed on a frame 38 is distributed on a forming die from bottom to top, a lower die set 30 and a planker 35 are arranged on the die set base 37, a handle 34 is arranged on the planker 35 to facilitate loading and unloading, a middle die body 33 is supported by the die set base 37 and is connected with a pushing oil cylinder 31 through a connecting rod 32, the pushing oil cylinders 31 are arranged on the left side and the right side of the lower die set 30, an upper die set 29 is arranged right above the lower die set 30, and a top oil cylinder 28 is arranged at the top of the upper die.

The hydraulic transmission system of the corrugated pipe forming machine generates hydraulic pressure by the oil pump unit to drive the forming die to perform hydraulic forming. The hydraulic transmission system comprises an oil tank 1, a first oil way, a second oil way and a third oil way. The first oil path conveys oil from the oil tank 1 to the top oil cylinder 28 through the 1# oil pump unit 2 and the 1# superposition valve group 7, the oil inlet pipe in the pipeline connecting the components is the 1# main path oil pipe 3, the 2# main path oil pipe 4 and the 1# oil inlet pipe 11, and the oil return pipe in the pipeline connecting the components is the 1# oil return pipe 12. The second oil path conveys oil from the oil tank 1 to the jacking oil cylinder 31 through the 1# oil pump unit 2 and the 2# superposition valve group 9, the oil inlet pipes connected with the pipelines of all the parts are a 1# main path oil pipe 3, a 3# main path oil pipe 5, a 2# oil inlet pipe 13, a 1# jacking oil inlet pipe 24 and a 2# jacking oil inlet pipe 26, and the oil return pipes for oil return are a 2# jacking oil return pipe 27, a 1# jacking oil return pipe 25 and a 2# oil return pipe 14. The third oil path conveys oil from the oil tank 1 to the carriage 35 through the 2# oil pump unit 17 and the 3# superposition valve group 15, and the oil inlet function of the pipeline connecting all the parts is the 4# main oil pipe 18 and the carriage oil pipe 23. Referring to fig. 2, after the oil in the third oil path is delivered to the carriage 35, the oil flows out from the oil inlet 67, and when the cavity formed by the carriage 35 and the base 65 is filled, the oil overflows through the central hole of the oil charger 63 until the interior of the tube blank 60 is filled; oil flowing down from the oil charger 63 or tube blank 60 accumulates on the deck of the rack 38 and is filtered clean through the filter 20 by the rack return line 22 and returned to the oil tank 1.

As shown in fig. 1, in the hydraulic transmission system, various instruments and valves are provided, the 1# superposition valve group 7 is connected with the 1# pressure gauge 6 and the 1# intermediate relay 10, the 2# superposition valve group 9 is connected with the 2# pressure gauge 8 and other sensors of the control electronic box 36, the 3# superposition valve group 15 is connected with the 2# intermediate relay 16, the pressure sensor 21 and the 3# pressure gauge 19, and the control box 36 is connected with the operation panel 39.

As shown in fig. 2, an upper base 46 is fixed to the upper mold frame 30 by a # 2 lock nut 45, an adjusting bolt 43 is screwed to the upper base 46, and the adjusting bolt 43 is used for controlling the upward movement position of a lower punch stud 47 and is fixed by a # 1 lock nut 44 for preventing looseness. The upper base 46 and the adjusting bolt 43 are penetrated through the center of a lower punch stud 47, the center of the lower punch stud 47 penetrates through a hexagon bolt 40, a pressure spring 42 is sleeved on the outer ring, a stroke nut 41 is arranged at the tail end of the top of the lower punch stud 47, and the lower end of the hexagon bolt 40 is connected with an upper die head 48. A compression spring 42 is confined between the travel nut 41 and the adjustment bolt 43 for providing upward spring force to the upper die. The stroke nut 41 is used for controlling the descending position of the lower punch stud 47, and the upper punch 48 is used for pressing the pipe blank 60 downwards.

As shown in fig. 2, a base 65 is fixed to the carriage 35 by a hexagon socket head cap screw 64, and the contact end face is sealed by an O-ring 66. An oil inlet hole 37 is arranged on the side of the carriage 35, and an oil filling device 63 is locked on a base 65 through a bottom die 62 by screw threads. The bottom die 62 is provided with an inlaid alloy 61 in the groove, and a gap is reserved between the inner circle of the inlaid alloy 61 and the outer circle of the oil filler 63 and used for installing the tube blank 60.

As shown in fig. 2, 3, and 4, a die body assembly is provided above the carriage 35, and the die body assembly closes the die around the pipe blank 60 along the die closing ridge 71 and the die closing groove 72 of the left and right intermediate die bodies 33. The die body assembly is composed of a lower die body 57, an intermediate die body 33, an upper die body 58, a # 1 die case 51, a # 2 die case 50, a # 3 die case 49, a # 1 die sheet 54, a # 2 die sheet 53, a # 3 die sheet 52 and a pressing plate 59. The lower die body 57, the upper die body 58 and the pressing plate 59 are used for installing and positioning the middle die body 33, the middle die body 33 is matched with an outer circular convex ridge 68 of the 1# die sleeve 51 through an inner circular groove 69, so that the 1# die sleeve 51 can freely slide up and down in the middle die body 33, the inner circular groove 69 is equal to the middle die body 33 in height, the outer circular convex ridge 68 is equal to the 1# die sleeve 51 in height, the 1# die sheet 54 fixed by a flat head screw 70 and a pin 73 is arranged on the lower end face of the 1# die sleeve 51, and the 2# die sleeve 50 connected with the convex ridge through the groove. The lower end face of the No. 2 die sleeve 50 is provided with a No. 2 die 53 fixed by a flat head screw 70 and a pin 73, and the inside is provided with a No. 3 die sleeve 49 connected with a convex ridge by a groove. The lower end face of the 3# die sleeve 49 is provided with a 3# die 52 which is fixed by a flat head screw 70 and a pin 73. The 3 kinds of the mold sheets are penetrated through the guide post holes 74 by the supporting springs 55, one end of each supporting spring 55 reaches the bottom of the counter bore of the corresponding mold sleeve, and one end of each supporting spring is plugged with the round-headed guide post 56 for providing the restoring elastic force of each mold sleeve so that the upper part of each mold sleeve is propped against the upper mold body 58. The guide post 56 is pressed against the lower mold body 57 by the support spring 55 for guiding the support spring 55 without dislocation.

The following description is made in connection with the working principle of the present invention in accordance with a specific application. When the corrugated pipe with the model phi 15 x 4 is molded, wear-resistant hydraulic oil is adopted as a pressure medium, the control electric box 36 on the right side of the frame 38 is electrified, the operation mode is set to be automatic on the operation panel 39, the planker 35 is pulled out of the die carrier base 37 to a proper position through the handle 34, the pipe blank 60 is inserted into a gap reserved between the inner circle of the embedded alloy 61 and the outer circle of the oil filler 63, finally the planker 35 is pushed to the bottom, the induction switch is triggered, the No. 1 oil pump unit 2 is started through the adjustment of the control electric box 36, oil is supplied to an oil supply circuit of a second oil path, so that the die body component is matched with the pipe blank 60 as the center under the action of the pushing oil cylinder 31, in addition, the matched die convex ridge 71 and the matched die groove 72 of the middle die body 33 of the die body component ensure that the matched die position is not dislocated, and the oil supply circuit of the No., the upper die head 48 is pushed to descend, the top of the tube blank 60 is firstly pressed, the 1# die sheet 54 and the 2# die sheet 53 are sequentially pressed, and the 3# die sheet 52 is finally formed, the tube blank 60 is folded and formed in a gap between the upper adjacent die sheet and the lower adjacent die sheet, at the moment, the 2# oil pump unit 17 is started to convey hydraulic oil in the oil tank 1 to the carriage 35 through an oil supply line of a third oil way, the hydraulic oil reaches the inner cavity of the tube blank 60 through an oil inlet hole 67 and an inner hole of an oil filler 63, and the pressure set by the 3# superposition valve group 15 is kept, so the corrugations of the tube blank 60.

After the expansion is finished, the oil supply of the No. 2 oil pump unit 17 is stopped, then the No. 1 superposed valve group 7 and the No. 2 superposed valve group 9 are reversed, the first oil way and the second oil way return oil through respective oil return lines, the top oil cylinder 28 is lifted at the same time, the jacking oil cylinder 31 is reset, the die body assembly is separated, the upper die head 48 is lifted to the initial position along with the lower punching stud 47 under the action of the pressure spring 42, and the die sheet in the die body assembly is lifted due to the influence of the support spring 55 and the guide pillar 56 which are arranged in the die sleeve. And after the equipment is reset, pulling out the carriage 35 by using the handle 34, taking down the finished corrugated pipe, and finishing the whole forming process.

When the tube blank 60 is broken in the forming process to cause hydraulic pressure to drop, the pressure sensor 21 is disconnected, the 2# intermediate relay 16 and the 1# intermediate relay group 10 are respectively powered off, the 1# superposition valve group 7 is switched to be closed, hydraulic oil in the top oil cylinder 28 flows back to the oil tank 1, the lower punching stud 47 rises to avoid damaging a die, and the 3# superposition valve group 15 is switched to be closed to stop oil supply, so that the hydraulic oil is prevented from being sprayed out from the damaged tube blank 60.

In addition, the frame 38 is provided with an oil collection table, which may be inclined at an angle to facilitate collection of oil. After the oil overflowing during the molding process is collected on the oil collecting table, the oil flowing out will be collected by the table of the frame 38 and will flow back to the oil tank 1 from the oil return line of the third oil path.

The utility model has the characteristics of safety, being suitable for, etc., and has good popularization and practical value.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (4)

1. Nested formula bellows forming die that opens and shuts, its characterized in that: the mould assembly comprises a lower mould body, a middle mould body, an upper mould body and a plurality of mould sleeves movably nested inside and outside, wherein the mould body assembly is arranged on the dragging plate, the left side and the right side of the lower mould frame are respectively provided with a pushing oil cylinder, the left middle mould body and the right middle mould body are respectively connected with the two pushing oil cylinders through a connecting rod, the left middle mould body and the right middle mould body are respectively provided with a mould closing convex ridge and a mould closing groove which are embedded and positioned during mould closing, the left middle mould body and the right middle mould body are movably positioned between the lower mould body and the upper mould body, the left middle mould body and the right middle mould body are matched with an outer convex ridge of the outermost mould sleeve through an inner circular groove, so that the outermost mould sleeve can freely slide up and down in the middle mould body, the inner circular groove is as high as the middle mould body, the outer convex ridge is as, the lower end face of the die sleeve is fixed with a die sheet, the die sheet is provided with a guide post hole, a support spring penetrates through the guide post hole, the bottom of the die sleeve is provided with a counter bore, one end of the support spring directly reaches the bottom of the counter bore corresponding to the die sleeve, the other end of the support spring is sleeved outside the guide post, the support spring is used for providing resetting elasticity for each die sleeve so that the upper part of the die sleeve is propped against the upper die body, and the bottom of the guide post is provided with a support flange which is; the pipe is arranged between the left middle die body and the right middle die body, the oil filling device is locked on the base through bottom die threads, the base is fixed on the planker, the bottom die is provided with an embedded groove, an embedded alloy is embedded in the bottom die, a gap is reserved between the inner circle of the embedded alloy and the outer circle of the oil filling device and used for installing the pipe, the planker of the oil filling device is provided with an oil inlet hole, and the oil outlet end of the oil inlet hole is connected with the oil.

2. The nested bellows-forming die of claim 1, wherein: the base is fixed on the carriage through an inner hexagonal screw and is in sealed contact with the end face through an O-shaped sealing ring.

3. The nested bellows-forming die of claim 1, wherein: the die sheet is fixed on the lower end face of the die sleeve by a flat head screw and a pin.

4. The nested bellows-forming die of claim 1, wherein: the carriage is provided with a handle.

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