CN108422637B - Double-wall corrugated pipe die head wall deviation adjusting device and wall deviation adjusting method - Google Patents

Double-wall corrugated pipe die head wall deviation adjusting device and wall deviation adjusting method Download PDF

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Publication number
CN108422637B
CN108422637B CN201810114462.4A CN201810114462A CN108422637B CN 108422637 B CN108422637 B CN 108422637B CN 201810114462 A CN201810114462 A CN 201810114462A CN 108422637 B CN108422637 B CN 108422637B
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China
Prior art keywords
wall
screw
sleeve
jaw chuck
double
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CN108422637A (en
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时玲
刘国胜
赵垒垒
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Zhejiang Shuanglin Plastic Machinery Co Ltd
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Zhejiang Shuanglin Plastic Machinery Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Abstract

The invention aims to provide a device and a method for adjusting the offset wall of a double-wall corrugated pipe die head. A double-walled bellows die offset adjustment apparatus, comprising: the die head comprises a head seat, a die head assembly, an inner inclined wall adjusting device and an outer inclined wall adjusting device; the die head assembly comprises: the inner core is provided with a middle hole, the rear end of the inner core is connected with the headstock, and the inner sleeve and the outer sleeve are sequentially sleeved outside the inner core, and the rear ends of the inner core and the outer sleeve are respectively detachably connected with the headstock; an inner wall material blank channel is formed between the inner core and the inner sleeve; an outer wall material blank channel is formed between the inner sleeve and the outer sleeve. The offset wall adjusting device for the double-wall corrugated pipe die head is convenient and quick to adjust.

Description

Double-wall corrugated pipe die head wall deviation adjusting device and wall deviation adjusting method
Technical Field
The invention relates to the field of plastic corrugated pipe manufacturing, in particular to a double-wall corrugated pipe die head wall deviation adjusting device and a wall deviation adjusting method.
Background
Chinese patent application No.: the utility model discloses a CN201120200943.0 machine head for producing double-wall corrugated pipes, which comprises a base (5), an extruder screw component assembly (1), a variable speed machine case (2), a feeding mechanism (3) and a mould device assembly (4), wherein the extruder screw component assembly, the variable speed machine case and the feeding mechanism are arranged on the base; a base (6) is arranged below the base (5), a guide rail (6-1) is arranged below the base (6), a guide groove (5-1) is arranged below the base (5), and the guide groove (5-1) and the guide rail (6-1) form sliding fit. When the traditional die device assembly for producing the double-wall corrugated pipe has the defects that the produced double-wall corrugated pipe has an inclined wall, particularly when an inner sleeve has an inclined wall, the adjustment is troublesome and the adjustment is time-consuming due to the limited space of a middle hole; therefore, the devising of a device and a method for adjusting the offset wall of the die head of the double-wall corrugated pipe, which are convenient and quick to adjust when the offset wall occurs in the produced double-wall corrugated pipe, becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects that when the wall of a double-wall corrugated pipe produced by the existing die device assembly deviates, particularly when an inner sleeve deviates, the space of a middle hole is limited, the adjustment is troublesome and time-consuming, and the device for adjusting the wall of the die head of the double-wall corrugated pipe is convenient and quick to adjust when the wall of the produced double-wall corrugated pipe deviates.
The specific technical scheme of the invention is as follows:
a double-walled bellows die offset adjustment apparatus, comprising: a headstock; the double-wall corrugated pipe die head offset wall adjusting device further comprises: the die head assembly comprises an inner inclined wall adjusting device and an outer inclined wall adjusting device; the die head assembly comprises: the inner core is provided with a middle hole, the rear end of the inner core is connected with the headstock, and the inner sleeve and the outer sleeve are sequentially sleeved outside the inner core, and the rear ends of the inner core and the outer sleeve are respectively detachably connected with the headstock; an inner wall material blank channel is formed between the inner core and the inner sleeve; an outer wall material blank channel is formed between the inner sleeve and the outer sleeve. According to the device for adjusting the offset wall of the double-wall corrugated pipe die head, an inner sleeve and an outer sleeve are respectively detachably connected with a machine head seat, when the offset wall of the produced double-wall corrugated pipe is adjusted, the outer sleeve is detached, the inner sleeve is loosened from being connected with the machine head seat, and after the inner wall of the produced double-wall corrugated pipe is adjusted by the inner offset wall adjusting device, the inner sleeve is tightly connected with the machine head seat; then the outer sleeve is sleeved outside the inner sleeve, and after the outer wall is adjusted through the outer offset wall adjusting device, the outer sleeve is tightly connected with the headstock, and the offset wall adjustment is convenient and rapid.
Preferably, the inner offset wall adjusting device comprises: a plurality of inner screw holes are uniformly distributed on the side wall of the inner sleeve along the circumference of the axis of the inner sleeve, and the number of the inner wall adjusting positioning screws is the same as that of the inner screw holes and corresponds to that of the inner screw holes one by one; the screw rod of the inner wall adjusting and positioning screw presses the outer side wall of the inner core and is in threaded connection with the inner threaded hole; the outer deviant wall adjustment device includes: the outer wall adjusting and positioning screws are arranged on the side wall of the outer sleeve, are uniformly distributed along the circumference of the axis of the outer sleeve, and have the same number as the outer screw holes and correspond to the outer screw holes one by one; the screw rod of the outer wall adjusting and positioning screw presses the outer side wall of the inner sleeve and is in threaded connection with the outer threaded hole. The inner inclined wall adjusting device and the outer inclined wall adjusting device are simple and practical in structure, and the inclined wall can be adjusted conveniently and quickly.
Preferably, the inner screw hole and the outer screw hole are arranged in a staggered mode in the circumferential direction and are the same in axial position. The uniform and stable circumferential stress of the inner sleeve and the outer sleeve is facilitated.
Preferably, the inner offset wall adjusting device comprises: two internal screw groups which are arranged on the side wall of the inner sleeve and are arranged in the front and back direction along the axial direction of the inner sleeve, and two internal screw groups which are in one-to-one correspondence with the internal screw groups; the inner screw hole group consists of a plurality of inner screw holes which are uniformly distributed along the circumference of the axis of the inner sleeve; the inner screw group consists of inner wall adjusting and positioning screws which have the same number as the inner screw holes of the inner screw hole group and are in one-to-one correspondence; the screw rod of the inner wall adjusting and positioning screw presses the outer side wall of the inner core and is in threaded connection with the inner threaded hole; the outer deviant wall adjustment device includes: two external screw groups which are arranged on the side wall of the outer sleeve and are arranged in the front-back direction along the axial direction of the outer sleeve, and two external screw groups which are in one-to-one correspondence with the external screw groups; the outer screw hole group consists of a plurality of outer screw holes which are uniformly distributed along the circumference of the axis of the outer sleeve; the outer screw group consists of outer wall adjusting and positioning screws which have the same number as the outer screw holes of the outer screw hole group and are in one-to-one correspondence with the outer screw holes of the outer screw hole group; the screw rod of the outer wall adjusting and positioning screw presses the outer side wall of the inner sleeve and is in threaded connection with the outer threaded hole. The inner inclined wall adjusting device and the outer inclined wall adjusting device are simple and practical in structure, and the inclined wall can be adjusted conveniently and quickly.
Preferably, the inner screw hole of one inner screw hole group and the outer screw hole of one outer screw hole group are arranged in a staggered way in the circumferential direction and have the same axial position; the inner screw hole of the other inner screw hole group and the outer screw hole of the other outer screw hole group are arranged in a staggered mode in the circumferential direction and are the same in axial position. The uniform and stable circumferential stress of the inner sleeve and the outer sleeve is facilitated.
Preferably, the double-wall corrugated pipe die offset wall adjusting device further comprises: an end coaxial adjusting device; the end coaxial adjusting device comprises: the outer three-jaw chuck, the middle three-jaw chuck and the inner three-jaw chuck are sequentially arranged in front and back and coaxially arranged, a middle shaft with a threaded section and a locking nut are arranged at the front end of the middle shaft; the middle three-jaw chuck and the inner three-jaw chuck are respectively connected with the middle shaft; the outer three-jaw chuck is provided with a connecting hole which is sleeved outside the middle shaft and matched with the middle shaft, and the locking nut presses the front end of the outer three-jaw chuck and is in threaded connection with the threaded section; when the wall deviation is adjusted, the clamping jaws of the inner three-jaw chuck clamp the front end of the side wall of the middle hole, the clamping jaws of the middle three-jaw chuck clamp the front end of the inner side wall of the inner sleeve, and the clamping jaws of the outer three-jaw chuck clamp the front end of the inner side wall of the outer sleeve. The end part coaxial adjusting device is beneficial to improving the coaxial precision of the front end of the inner core, the front end of the inner sleeve and the front end of the outer sleeve, and is beneficial to preventing the inner sleeve and the outer sleeve from shifting when the inner screw and the outer screw are screwed, the inner sleeve is tightly connected with the headstock, and the outer sleeve is tightly connected with the headstock, and the screw is screwed when the outer sleeve is tightly connected with the headstock.
Preferably, the rear end of the inner sleeve and the rear end of the outer sleeve are respectively connected with the headstock through connecting screws. The outer sleeve and the inner sleeve can be easily disassembled and assembled to be loosened or fastened with the headstock.
The wall deviation adjusting device of the double-wall corrugated pipe die head is provided with a limiting structure of the wall deviation adjusting device of the double-wall corrugated pipe die head; step one, when the produced double-wall corrugated pipe has a deviated wall, the outer sleeve is detached, the connecting screw of the inner sleeve and the headstock is unscrewed, the clamping jaws of the inner three-jaw chuck clamp the front end of the side wall of the middle hole, and the clamping jaws of the middle three-jaw chuck clamp the front end of the side wall in the inner sleeve; rotating the inner wall adjusting and positioning screw, and pressing the outer side wall of the inner core by a screw rod of the inner wall adjusting and positioning screw; screwing the connecting screw of the inner sleeve and the headstock; step three, the outer sleeve is sleeved outside the inner sleeve, the outer three-jaw chuck is sleeved outside the middle shaft, and the locking nut presses the front end of the outer three-jaw chuck and is in threaded connection with the threaded section; the clamping jaws of the outer three-jaw chuck clamp the inner side wall of the outer sleeve; rotating the outer wall adjusting and positioning screw, wherein the screw rod of the outer wall adjusting and positioning screw presses the front end of the side wall of the inner sleeve; screwing the connecting screw of the outer sleeve and the headstock; and fifthly, loosening the clamping jaws of the outer three-jaw chuck, the clamping jaws of the middle three-jaw chuck and the clamping jaws of the inner three-jaw chuck, and removing the end part coaxial adjusting device to finish the die head wall deflection adjustment.
The method for adjusting the offset wall of the double-wall corrugated pipe die head offset wall adjusting device can meet the requirement that the offset wall adjustment is convenient and quick when the offset wall adjustment occurs to the produced double-wall corrugated pipe.
Compared with the prior art, the invention has the beneficial effects that: according to the device for adjusting the offset wall of the double-wall corrugated pipe die head, an inner sleeve and an outer sleeve are respectively detachably connected with a machine head seat, when the offset wall of the produced double-wall corrugated pipe is adjusted, the outer sleeve is detached, the inner sleeve is loosened from being connected with the machine head seat, and after the inner wall of the produced double-wall corrugated pipe is adjusted by the inner offset wall adjusting device, the inner sleeve is tightly connected with the machine head seat; then the outer sleeve is sleeved outside the inner sleeve, and after the outer wall is adjusted through the outer offset wall adjusting device, the outer sleeve is tightly connected with the headstock, and the offset wall adjustment is convenient and rapid. The inner inclined wall adjusting device and the outer inclined wall adjusting device are simple and practical in structure, and the inclined wall can be adjusted conveniently and quickly. The inner screw hole and the outer screw hole are arranged in a staggered mode in the circumferential direction, and the axial positions of the inner screw hole and the outer screw hole are the same, so that uniform and stable circumferential stress of the inner sleeve and the outer sleeve is facilitated. The inner screw hole of one inner screw hole group and the outer screw hole of one outer screw hole group are arranged in a staggered mode in the circumferential direction and are the same in axial position, the inner screw hole of the other inner screw hole group and the outer screw hole of the other outer screw hole group are arranged in a staggered mode in the circumferential direction and are the same in axial position, and uniform and stable circumferential stress of the inner sleeve and the outer sleeve is facilitated. The end part coaxial adjusting device is beneficial to improving the coaxial precision of the front end of the inner core, the front end of the inner sleeve and the front end of the outer sleeve, and is beneficial to preventing the inner sleeve and the outer sleeve from shifting when the inner screw and the outer screw are screwed, the inner sleeve is tightly connected with the headstock, and the outer sleeve is tightly connected with the headstock, and the screw is screwed when the outer sleeve is tightly connected with the headstock. The rear end of the inner sleeve and the rear end of the outer sleeve are respectively connected with the headstock through connecting screws, so that the outer sleeve, the inner sleeve and the headstock can be conveniently disassembled and assembled to be loosened or fastened. The method for adjusting the offset wall of the double-wall corrugated pipe die head offset wall adjusting device can meet the requirement that the offset wall adjustment is convenient and quick when the offset wall adjustment occurs to the produced double-wall corrugated pipe.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of a double-wall bellows die wall-offset adjustment device;
fig. 2 is a schematic structural diagram of an embodiment 2 of a double-wall corrugated pipe die offset adjustment device.
In the figure: the machine head seat comprises a machine head seat 1, a middle hole 2, an inner core 3, an inner sleeve 4, an outer sleeve 5, an inner wall blank channel 6, an outer wall blank channel 7, an inner screw hole 8, an inner wall adjusting and positioning screw 9, an outer screw hole 10, an outer wall adjusting and positioning screw 11, a connecting screw 12, an outer three-jaw chuck 13, a middle three-jaw chuck 14, an inner three-jaw chuck 15, a threaded section 16, a middle shaft 17 and a locking nut 18.
Detailed Description
The invention will be further described with reference to the drawings.
Example 1, as shown in figure 1: a double-walled bellows die offset adjustment apparatus, comprising: the device comprises a headstock 1, a die head assembly, an inner inclined wall adjusting device and an outer inclined wall adjusting device; the die head assembly comprises: an inner core 3 provided with a middle hole 2 and the rear end of which is in threaded connection with the headstock 1, an inner sleeve 4 and an outer sleeve 5 which are sequentially sleeved outside the inner core 3 and the rear ends of which are respectively in detachable connection with the headstock 1; an inner wall material blank channel 6 is formed between the inner core 3 and the inner sleeve 4; an outer wall material blank channel 7 is formed between the inner sleeve 4 and the outer sleeve 5.
The inner eccentric wall adjusting device comprises: three inner screw holes 8 which are arranged on the side wall of the inner sleeve 4 and are uniformly distributed along the circumference of the axis of the inner sleeve 4, and inner wall adjusting and positioning screws 9 which have the same number as the inner screw holes 8 and correspond to the inner screw holes one by one; the screw rod of the inner wall adjusting and positioning screw 9 presses the outer side wall of the inner core 3 and is in threaded connection with the inner threaded hole 8; the outer deviant wall adjustment device includes: the outer wall adjusting and positioning screws 11 are arranged on the side wall of the outer sleeve 5, are uniformly distributed along the circumference of the axis of the outer sleeve 5, and have the same number as the outer screw holes 10 and correspond to the outer screw holes one by one; the screw rod of the outer wall adjusting and positioning screw 11 presses the outer side wall of the inner sleeve 4 and is in threaded connection with the outer threaded hole 10.
The inner threaded hole 8 and the outer threaded hole 10 are circumferentially staggered and have the same axial position.
In this embodiment, the rear end of the inner sleeve 4 and the rear end of the outer sleeve 5 are respectively connected with the headstock 1 through a connecting screw 12.
Example 2, as shown in figure 2: a double-walled bellows die offset adjustment apparatus, comprising: the device comprises a headstock 1, a die head assembly, an inner inclined wall adjusting device and an outer inclined wall adjusting device; the die head assembly comprises: an inner core 3 provided with a middle hole 2 and the rear end of which is in threaded connection with the headstock 1, an inner sleeve 4 and an outer sleeve 5 which are sequentially sleeved outside the inner core 3 and the rear ends of which are respectively in detachable connection with the headstock 1; an inner wall material blank channel 6 is formed between the inner core 3 and the inner sleeve 4; an outer wall material blank channel 7 is formed between the inner sleeve 4 and the outer sleeve 5.
The inner eccentric wall adjusting device comprises: two internal screw groups which are arranged on the side wall of the inner sleeve 4 and are arranged front and back along the axial direction of the inner sleeve 4, and two internal screw groups which are in one-to-one correspondence with the internal screw groups; the inner screw hole group consists of three inner screw holes 8 which are uniformly distributed along the circumference of the axis of the inner sleeve 4; the inner screw group consists of inner wall adjusting and positioning screws 9 which have the same number as the inner screw holes 8 of the inner screw hole group and are in one-to-one correspondence; the screw rod of the inner wall adjusting and positioning screw 9 presses the outer side wall of the inner core 3 and is in threaded connection with the inner threaded hole 8; the outer deviant wall adjustment device includes: two external screw hole groups which are arranged on the side wall of the outer sleeve 5 and are arranged front and back along the axial direction of the outer sleeve 5, and two external screw groups which are in one-to-one correspondence with the external screw hole groups; the outer screw hole group consists of three outer screw holes 10 which are uniformly distributed along the circumference of the axis of the outer sleeve 5; the outer screw group consists of outer wall adjusting and positioning screws 11 which have the same number as the number of the outer screw holes 10 of the outer screw hole group and are in one-to-one correspondence; the screw rod of the outer wall adjusting and positioning screw 11 presses the outer side wall of the inner sleeve 4 and is in threaded connection with the outer threaded hole 10.
The inner screw hole 8 of one inner screw hole group and the outer screw hole 10 of one outer screw hole group are arranged in a circumferentially staggered mode and have the same axial position; the inner screw holes 8 of the other inner screw hole group and the outer screw holes 10 of the other outer screw hole group are circumferentially staggered and have the same axial position.
The double-wall corrugated pipe die head offset wall adjusting device further comprises: an end coaxial adjusting device; the end coaxial adjusting device comprises: the outer three-jaw chuck 13, the middle three-jaw chuck 14 and the inner three-jaw chuck 15 are sequentially arranged in sequence and coaxially arranged from front to back, and the front end of the outer three-jaw chuck is provided with a middle shaft 17 with a threaded section 16 and a locking nut 18; the middle three-jaw chuck 14 and the inner three-jaw chuck 15 are respectively connected with a middle shaft 17 in a key mode; the outer three-jaw chuck 13 is provided with a connecting hole (not shown in the drawing) which is sleeved outside the middle shaft 17 and is in clearance fit with the middle shaft 17, and a locking nut 18 presses the front end of the outer three-jaw chuck 13 and is in threaded connection with the threaded section 16; when the wall deviation is adjusted, the jaws of the inner three-jaw chuck 15 clamp the front end of the side wall of the middle hole 2, the jaws of the middle three-jaw chuck 14 clamp the front end of the inner side wall of the inner sleeve 4, and the jaws of the outer three-jaw chuck 13 clamp the front end of the inner side wall of the outer sleeve 5.
In this embodiment, the rear end of the inner sleeve 4 and the rear end of the outer sleeve 5 are respectively connected with the headstock 1 through a connecting screw 12.
The wall deviation adjusting device of the double-wall corrugated pipe die head is provided with a limiting structure of the wall deviation adjusting device of the double-wall corrugated pipe die head; step one, when the produced double-wall corrugated pipe has a deviated wall, the outer sleeve 5 is detached, the connecting screw 12 of the inner sleeve 4 and the headstock 1 is unscrewed, the front end of the side wall of the middle hole 2 is clamped by the clamping jaws of the inner three-jaw chuck 15, and the front end of the side wall of the inner sleeve 4 is clamped by the clamping jaws of the middle three-jaw chuck 14; rotating the inner wall adjusting and positioning screw 9, and pressing the outer side wall of the inner core 3 by a screw rod of the inner wall adjusting and positioning screw 9; screwing the inner sleeve 4 and the connecting screw 12 of the headstock 1; step three, the outer sleeve 5 is sleeved outside the inner sleeve 4, the outer three-jaw chuck 13 is sleeved outside the middle shaft 17, and the locking nut 18 presses the front end of the outer three-jaw chuck 13 and is in threaded connection with the threaded section 16; the clamping jaws of the outer three-jaw chuck 13 clamp the inner side wall of the outer sleeve 5; rotating the outer wall adjusting and positioning screw 11, wherein the screw rod of the outer wall adjusting and positioning screw 11 presses the front end of the side wall of the inner sleeve 4; screwing the connecting screw 12 of the outer sleeve 5 and the headstock 1; and step five, loosening the jaws of the outer three-jaw chuck 13, the jaws of the middle three-jaw chuck 14 and the jaws of the inner three-jaw chuck 15, and removing the end coaxial adjusting device to finish die head wall deflection adjustment.
The invention has the beneficial effects that: according to the device for adjusting the offset wall of the double-wall corrugated pipe die head, an inner sleeve and an outer sleeve are respectively detachably connected with a machine head seat, when the offset wall of the produced double-wall corrugated pipe is adjusted, the outer sleeve is detached, the inner sleeve is loosened from being connected with the machine head seat, and after the inner wall of the produced double-wall corrugated pipe is adjusted by the inner offset wall adjusting device, the inner sleeve is tightly connected with the machine head seat; then the outer sleeve is sleeved outside the inner sleeve, and after the outer wall is adjusted through the outer offset wall adjusting device, the outer sleeve is tightly connected with the headstock, and the offset wall adjustment is convenient and rapid. The inner inclined wall adjusting device and the outer inclined wall adjusting device are simple and practical in structure, and the inclined wall can be adjusted conveniently and quickly. The inner screw hole and the outer screw hole are arranged in a staggered mode in the circumferential direction, and the axial positions of the inner screw hole and the outer screw hole are the same, so that uniform and stable circumferential stress of the inner sleeve and the outer sleeve is facilitated. The inner screw hole of one inner screw hole group and the outer screw hole of one outer screw hole group are arranged in a staggered mode in the circumferential direction and are the same in axial position, the inner screw hole of the other inner screw hole group and the outer screw hole of the other outer screw hole group are arranged in a staggered mode in the circumferential direction and are the same in axial position, and uniform and stable circumferential stress of the inner sleeve and the outer sleeve is facilitated. The end part coaxial adjusting device is beneficial to improving the coaxial precision of the front end of the inner core, the front end of the inner sleeve and the front end of the outer sleeve, and is beneficial to preventing the inner sleeve and the outer sleeve from shifting when the inner screw and the outer screw are screwed, the inner sleeve is tightly connected with the headstock, and the outer sleeve is tightly connected with the headstock, and the screw is screwed when the outer sleeve is tightly connected with the headstock. The rear end of the inner sleeve and the rear end of the outer sleeve are respectively connected with the headstock through connecting screws, so that the outer sleeve, the inner sleeve and the headstock can be conveniently disassembled and assembled to be loosened or fastened. The method for adjusting the offset wall of the double-wall corrugated pipe die head offset wall adjusting device can meet the requirement that the offset wall adjustment is convenient and quick when the offset wall adjustment occurs to the produced double-wall corrugated pipe.
It will be obvious to those skilled in the art that the present invention may be varied in many ways, and that such variations are not to be regarded as a departure from the scope of the invention. All such modifications as would be obvious to one skilled in the art are intended to be included within the scope of this claim.

Claims (6)

1. A double-walled bellows die offset adjustment apparatus, comprising: a headstock; the double-wall corrugated pipe die head deviation wall adjusting device is characterized by further comprising: the die head assembly comprises an inner inclined wall adjusting device, an outer inclined wall adjusting device and an end coaxial adjusting device; the die head assembly comprises: the inner core is provided with a middle hole, the rear end of the inner core is connected with the headstock, and the inner sleeve and the outer sleeve are sequentially sleeved outside the inner core, and the rear ends of the inner core and the outer sleeve are respectively detachably connected with the headstock; an inner wall material blank channel is formed between the inner core and the inner sleeve; an outer wall material blank channel is formed between the inner sleeve and the outer sleeve; the end coaxial adjusting device comprises: the outer three-jaw chuck, the middle three-jaw chuck and the inner three-jaw chuck are sequentially arranged in front and back and coaxially arranged, a middle shaft with a threaded section and a locking nut are arranged at the front end of the middle shaft; the middle three-jaw chuck and the inner three-jaw chuck are respectively connected with the middle shaft; the outer three-jaw chuck is provided with a connecting hole which is sleeved outside the middle shaft and matched with the middle shaft, and the locking nut presses the front end of the outer three-jaw chuck and is in threaded connection with the threaded section; when the wall deviation is adjusted, the clamping jaws of the inner three-jaw chuck clamp the front end of the side wall of the middle hole, the clamping jaws of the middle three-jaw chuck clamp the front end of the inner side wall of the inner sleeve, and the clamping jaws of the outer three-jaw chuck clamp the front end of the inner side wall of the outer sleeve; the rear end of the inner sleeve and the rear end of the outer sleeve are respectively connected with the headstock through connecting screws.
2. The double-walled bellows die offset wall adjustment assembly of claim 1, wherein: the inner eccentric wall adjusting device comprises: a plurality of inner screw holes are uniformly distributed on the side wall of the inner sleeve along the circumference of the axis of the inner sleeve, and the number of the inner wall adjusting positioning screws is the same as that of the inner screw holes and corresponds to that of the inner screw holes one by one; the screw rod of the inner wall adjusting and positioning screw presses the outer side wall of the inner core and is in threaded connection with the inner threaded hole; the outer deviant wall adjustment device includes: the outer wall adjusting and positioning screws are arranged on the side wall of the outer sleeve, are uniformly distributed along the circumference of the axis of the outer sleeve, and have the same number as the outer screw holes and correspond to the outer screw holes one by one; the screw rod of the outer wall adjusting and positioning screw presses the outer side wall of the inner sleeve and is in threaded connection with the outer threaded hole.
3. The double-walled bellows die offset wall adjustment assembly of claim 2, wherein: the inner screw hole and the outer screw hole are arranged in a staggered mode in the circumferential direction and are the same in axial position.
4. The double-walled bellows die offset wall adjustment assembly of claim 1, wherein: the inner eccentric wall adjusting device comprises: two internal screw groups which are arranged on the side wall of the inner sleeve and are arranged in the front and back direction along the axial direction of the inner sleeve, and two internal screw groups which are in one-to-one correspondence with the internal screw groups; the inner screw hole group consists of a plurality of inner screw holes which are uniformly distributed along the circumference of the axis of the inner sleeve; the inner screw group consists of inner wall adjusting and positioning screws which have the same number as the inner screw holes of the inner screw hole group and are in one-to-one correspondence; the screw rod of the inner wall adjusting and positioning screw presses the outer side wall of the inner core and is in threaded connection with the inner threaded hole; the outer deviant wall adjustment device includes: two external screw groups which are arranged on the side wall of the outer sleeve and are arranged in the front-back direction along the axial direction of the outer sleeve, and two external screw groups which are in one-to-one correspondence with the external screw groups; the outer screw hole group consists of a plurality of outer screw holes which are uniformly distributed along the circumference of the axis of the outer sleeve; the outer screw group consists of outer wall adjusting and positioning screws which have the same number as the outer screw holes of the outer screw hole group and are in one-to-one correspondence with the outer screw holes of the outer screw hole group; the screw rod of the outer wall adjusting and positioning screw presses the outer side wall of the inner sleeve and is in threaded connection with the outer threaded hole.
5. The double-walled bellows die offset wall adjustment assembly of claim 4, wherein: the inner screw hole of one inner screw hole group and the outer screw hole of one outer screw hole group are arranged in a staggered mode in the circumferential direction and are the same in axial position; the inner screw hole of the other inner screw hole group and the outer screw hole of the other outer screw hole group are arranged in a staggered mode in the circumferential direction and are the same in axial position.
6. A method for adjusting the offset of a double-wall corrugated pipe die head, wherein the double-wall corrugated pipe die head offset adjusting device has a limiting structure of the double-wall corrugated pipe die head offset adjusting device of any one of claims 1 to 5; the method is characterized in that: step one, when the produced double-wall corrugated pipe has a deviated wall, the outer sleeve is detached, the connecting screw of the inner sleeve and the headstock is unscrewed, the clamping jaws of the inner three-jaw chuck clamp the front end of the side wall of the middle hole, and the clamping jaws of the middle three-jaw chuck clamp the front end of the side wall in the inner sleeve; rotating the inner wall adjusting and positioning screw, and pressing the outer side wall of the inner core by a screw rod of the inner wall adjusting and positioning screw; screwing the connecting screw of the inner sleeve and the headstock; step three, the outer sleeve is sleeved outside the inner sleeve, the outer three-jaw chuck is sleeved outside the middle shaft, and the locking nut presses the front end of the outer three-jaw chuck and is in threaded connection with the threaded section; the clamping jaws of the outer three-jaw chuck clamp the inner side wall of the outer sleeve; rotating the outer wall adjusting and positioning screw, wherein the screw rod of the outer wall adjusting and positioning screw presses the front end of the side wall of the inner sleeve; screwing the connecting screw of the outer sleeve and the headstock; and fifthly, loosening the clamping jaws of the outer three-jaw chuck, the clamping jaws of the middle three-jaw chuck and the clamping jaws of the inner three-jaw chuck, and removing the end part coaxial adjusting device to finish the die head wall deflection adjustment.
CN201810114462.4A 2018-02-05 2018-02-05 Double-wall corrugated pipe die head wall deviation adjusting device and wall deviation adjusting method Active CN108422637B (en)

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