CN111055478A - Flow regulating device for molding runner of pipe blank plastic uptake mold - Google Patents
Flow regulating device for molding runner of pipe blank plastic uptake mold Download PDFInfo
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- CN111055478A CN111055478A CN201911287141.5A CN201911287141A CN111055478A CN 111055478 A CN111055478 A CN 111055478A CN 201911287141 A CN201911287141 A CN 201911287141A CN 111055478 A CN111055478 A CN 111055478A
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- ring
- flow
- main mandrel
- flow channel
- plastic uptake
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/10—Forming by pressure difference, e.g. vacuum
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
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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
- B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/40—Venting means
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- 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
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
Abstract
The application discloses pipe embryo plastic uptake mould shaping runner flow control device, its characterized in that: the pipe blank plastic uptake mould comprises a pipe blank plastic uptake mould main body (1), wherein a hollow tubular main mandrel (2) is arranged in the pipe blank plastic uptake mould main body (1), a plastic uptake pipe (3) is arranged in the main mandrel (2), and the plastic uptake pipe (3) is sleeved in the main mandrel (2) and is coaxially arranged with the main mandrel (2); the lower end of the main mandrel (2) protrudes out of the lower end face of the pipe blank plastic uptake mould body (1), the lower end of the pipe blank plastic uptake mould body (1) is fixedly connected with a forming opening mould (4) with a hollow interior, the lower end of the main mandrel (2) is sleeved in the forming opening mould (4), and a lower runner is arranged between the outer surface of the lower section of the main mandrel (2) and the inner surface of the forming opening mould (4) at intervals and is formed; and the middle section of the main mandrel (2) is sleeved with a drainage ring (6). The invention has the advantages that the defects in the prior art can be overcome, and the structural design is reasonable and novel.
Description
Technical Field
The invention relates to a flow regulating device for a molding runner of a pipe blank plastic uptake mold, and belongs to the field of plastic uptake molds.
Background
The plastic uptake is also called hollow plastic uptake, and is a plastic processing method with rapid development. The blister process began during world war ii to produce low density polyethylene vials. In the later 50 s, the blister technology has been widely used with the birth of high density polyethylene and the development of blister forming machines. The volume of the hollow container can reach thousands of liters, and computer control is adopted in some production. The plastics suitable for plastic uptake include polyethylene, polyvinyl chloride, polypropylene, polyester, etc., and the obtained hollow container is widely used as an industrial packaging container. According to the parison production method, plastics suction can be classified into extrusion plastics suction and injection plastics suction, and newly developed are multilayer plastics suction and stretch plastics suction. When the medical ampoule bottle is produced by using the plastic suction mould, because the flow velocity of the molten material entering the plastic suction mould is uneven and the fusion is insufficient, a plurality of weld marks can be formed on the surface of the finished ampoule bottle, and the production quality of the ampoule bottle is influenced.
Disclosure of Invention
The technical scheme of the invention aims at the following problems in the prior art: "medical ampoule is when using the plastic suction mould to produce, because enter into the uneven, the fusion of melt velocity of flow in the plastic suction mould insufficient for can form a plurality of weld marks on the off-the-shelf ampoule, the not enough of production quality that has influenced the ampoule" provides a pipe embryo plastic suction mould shaping runner flow adjusting device.
In order to solve the technical problems, the invention adopts the technical scheme that the flow regulating device for the molding runner of the pipe blank plastic uptake mold is characterized in that: the plastic suction mould comprises a pipe blank plastic suction mould main body, wherein a hollow tubular main mandrel is arranged in the pipe blank plastic suction mould main body, a plastic suction pipe is arranged in the main mandrel, and the plastic suction pipe is sleeved in the main mandrel and is coaxially arranged with the main mandrel; the lower end of the main mandrel protrudes out of the lower end face of the pipe blank plastic uptake mold main body, the lower end of the pipe blank plastic uptake mold main body is fixedly connected with a forming mouth mold with a hollow interior, the lower end of the main mandrel is sleeved in the forming mouth mold, and a lower runner is arranged between the outer surface of the lower section of the main mandrel and the inner surface of the forming mouth mold at intervals and formed; a drainage ring is sleeved at the middle section of the main mandrel, a feed inlet is arranged at the side part of the main body of the tube blank plastic uptake mold, a longitudinal flow passage is arranged in the drainage ring, one end of the longitudinal flow passage in the drainage ring is communicated with the feed inlet, and a lower flow passage between the outer surface of the lower section of the main mandrel and the inner surface of the molding opening mold is communicated with the other end of the longitudinal flow passage; the side part of the pipe blank plastic uptake mould main body is provided with a flow adjusting screw rod, and the end part of the flow adjusting screw rod is inserted into the longitudinal flow channel on the drainage ring and is in threaded connection with the drainage ring.
Among the technical scheme of this application, vertical runner department at the drainage ring has set up flow control screw, can adjust the open area of the vertical runner in the drainage ring through rotatory flow control screw, and then the adjustment flows through the intra-annular flow of drainage, the size of velocity of flow, makes the melt in the runner have more time to mix through the adjustment to flow, velocity of flow, improves the even degree of mixing, prevents to appear the weld mark on ampoule surface.
Preferably, the flow regulating device for the molding runner of the pipe blank plastic uptake mold is characterized in that an upper bushing and a splitter ring are sleeved at the middle section of the main mandrel, and a diversion ring is positioned between the upper bushing and the splitter ring; the lower end surface of the upper bushing and the upper end surface of the drainage ring are respectively provided with a semi-annular groove I, the lower end surface of the upper bushing and the groove I of the drainage ring are butted into a semi-ring flow channel I, and two ends of the semi-ring flow channel I are respectively communicated with the feeding hole and the longitudinal flow channel; and the lower end surface of the diversion ring and the upper end surface of the flow dividing ring are respectively provided with a semi-annular groove II, the grooves II on the lower end surface of the diversion ring and the upper end surface of the flow dividing ring are butted into a semi-ring flow channel II, and the lower flow channel and the longitudinal flow channel are communicated with the semi-ring flow channel II.
In this application, the lower terminal surface of last bush, the recess of drainage ring dock for semi-ring runner one, and semi-ring runner one is the hemicycle, and the melt that gets into through the feed inlet has reduced the perpendicular impact of melt to the work piece through the buffering of semi-ring runner one of hemicycle, reaches improvement working life, prevents the tired purpose of work piece. And the flow speed of the molten material can be slowed down by the first half-ring flow channel, so that the purpose of flow control in the drainage ring can be better achieved. The semi-ring runner forces the melting stock to change from linear motion to circular motion, so that the material flow can be better mixed, and the preparation is made for a basic circular pipe blank.
Preferably, in the flow regulating device for the molding flow channel of the pipe blank plastic uptake mold, the side part of the main body of the pipe blank plastic uptake mold is provided with the guide sleeve and the pressing block, the guide sleeve is inserted into the main body of the pipe blank plastic uptake mold, and one end of the pressing block is inserted into the side part of the main body of the pipe blank plastic uptake mold and is in tight press contact with the end part of the guide sleeve; the flow adjusting screw penetrates through the guide sleeve and the pressing block and is in threaded connection with the pressing block; the diameter of the end part of the flow adjusting screw is larger than the inner diameter of the longitudinal flow passage, and the longitudinal flow passage is blocked by the flow adjusting screw when the end part of the flow adjusting screw and the inner side surface of the longitudinal flow passage are arranged.
In this application, flow control screw adopts threaded connection with the briquetting, through the position and the direction of motion of the fixed flow control screw of briquetting and uide bushing, prevents the skew position of flow control screw when rotatory adjustment for flow control screw can the better cooperation of the intra-annular vertical runner of drainage.
Preferably, in the flow passage flow regulating device formed by the pipe blank plastic uptake mold, the end part of the flow regulating screw rod is in a ball arc shape, and the side wall of the longitudinal flow passage is provided with a groove which is matched with the end part of the flow regulating screw rod in shape; the flow adjusting screw is provided with two protruding limiting sections which are arranged at intervals, and the two protruding limiting sections are respectively positioned on two sides of the pressing block.
In this application, the spacing section of two intervals on the flow control screw has played the effect of preventing staying, and when the flow control screw reached extreme position, the spacing section of arch in the outside restricted flow control screw's position prevented it from hitting inside spare part. When the flow adjusting screw rod is screwed outwards and the stroke reaches a certain degree, the inner side protruding limiting section prevents the flow adjusting screw rod from separating from the guide sleeve, and glue leakage is prevented.
Preferably, the flow regulating device for the molding flow channel of the pipe blank plastic uptake mold is characterized in that an extrusion ring is sleeved at the middle section of the main mandrel, the extrusion ring is positioned below the shunt ring and attached to the shunt ring, and an annular extrusion cavity is formed between the annular inner surface of the extrusion ring and the outer surface of the main mandrel at intervals; an annular extrusion bulge ring is arranged on the annular inner surface of the extrusion ring, and the annular inner surface of the extrusion bulge ring and the outer surface of the main mandrel are arranged at intervals; the distance between the inner ring surface at the upper end of the extrusion ring and the outer surface of the middle section of the main mandrel is larger than the distance between the inner ring surface at the lower end of the extrusion ring and the outer surface of the middle section of the main mandrel, and the distance between the inner ring surface at the lower end of the extrusion ring and the outer surface of the middle section of the main mandrel is larger than the distance between the extrusion bulge ring and the outer surface of the middle section of the.
In this application, the melt material stream that carries out the flow management and control through flow adjusting screw enters into the runner space between extrusion ring and the main mandrel after reaching semi-ring runner one, semi-ring runner two, improves the pressure that the melt material stream is drawn together through the extrusion limiting effect of the protruding ring of extrusion for the melt material stream intensive mixing that gets into the runner space between extrusion ring and the main mandrel, with this kind of weld mark that prevents to eliminate the ampoule surface.
Optimally, the flow regulating device for the molding flow channel of the pipe blank plastic uptake mold is characterized in that a part of the main core shaft, which is positioned between the splitter ring and the molding port mold, and the inner wall of the main body of the pipe blank plastic uptake mold are arranged at intervals; the pipe blank plastic uptake mould comprises a main mandrel and a pipe blank plastic uptake mould body, wherein a middle section supporting piece for supporting the space between the main mandrel and the inner wall of the pipe blank plastic uptake mould body is sleeved on the main mandrel, the middle section supporting piece is annular, the annular inner wall of the middle section supporting piece is attached to the outer surface of the main mandrel, and the annular outer wall of the middle section supporting piece is attached to the inner wall of the pipe blank plastic uptake mould body.
Main dabber and last bush aventurine cooperation location, from main dabber and the part of last bush cooperation position between the shaping bush all be in unsettled state, the shaping bush takes place to rock easily under this kind of state, and the during operation shaping bush can be inclined to one side by the melt material stream area, causes the off-the-shelf thickness of ampoule uneven to it is stable to influence the velocity of flow, forms the weld mark easily. In this application, use middle section support piece to support main dabber, improved the stability of supporting main dabber, shaping bush, improved the thickness stability who extrudes ampoule pipe embryo to can reduce the appearance of weld mark.
Preferably, the flow regulating device for the flow channel formed by the pipe blank plastic uptake mold comprises a middle section supporting piece, a middle section supporting piece and a main core shaft, wherein the middle section supporting piece comprises a supporting ring, a second shunting ring and a sealing ring; a plurality of support ring diversion grooves penetrating through the support ring along the direction parallel to the length extension direction of the main mandrel are formed in the support ring, and a plurality of diversion column cavities penetrating through the second diversion ring along the direction parallel to the length extension direction of the main mandrel are formed in the second diversion ring; the cross section of the support ring diversion trench along the direction vertical to the length extension direction of the main mandrel is arc-shaped, the opening area of the lower end of the support ring diversion trench is larger than the inner diameter of the diversion column cavity, and the support ring diversion trench is communicated with the diversion column cavity; and the lower end of the guide column cavity is communicated with the lower runner through the second extrusion cavity.
In this application, middle section support piece not only can carry out stable support to main dabber, shaping bush, can also play the effect of slow stream, further improves the even degree of melt stream velocity of flow and fuses the degree of consistency to the secondary slow stream that the melt stream flows through middle section support piece, further prevents the appearance of weld mark.
Preferably, the flow regulating device for the molding flow channel of the pipe blank plastic uptake mold is characterized in that an annular extrusion bulge ring II is arranged on the annular inner surface of the sealing ring, and the annular inner surface of the extrusion bulge ring II and the outer surface of the main mandrel are arranged at intervals; the distance between the inner ring surface at the upper end of the sealing ring and the outer surface of the main mandrel is larger than the distance between the inner ring surface at the lower end of the sealing ring and the outer surface of the middle section of the main mandrel, and the distance between the inner ring surface at the lower end of the sealing ring and the outer surface of the main mandrel is larger than the distance between the second extrusion bulge ring and the outer surface of the main mandrel.
In this application, the extrusion restriction effect through the extrusion protruding ring two improves the pressure that the melt stream flows for the melt stream intensive mixing that gets into the runner space between sealing ring and the main mandrel, with this kind of weld mark that prevents to eliminate ampoule surface.
Preferably, in the flow regulating device for the molding flow channel of the tube blank plastic uptake mold, the opening area of the upper end opening of the lower flow channel is larger than the opening area of the lower end opening of the lower flow channel, an annular steady flow protruding ring is arranged at the middle section of the lower flow channel, the steady flow protruding ring is arranged on the outer annular surface of the middle section of the section, which is sleeved inside the molding die, of the main core shaft, and the outer annular surface of the steady flow protruding ring and the inner surface of the molding die are arranged at intervals.
In this application, the open area of the upper end opening of lower part runner is greater than the open area of the lower extreme opening of lower part runner, and the melt material stream through lower part runner further improves the fusion degree of consistency through the extrusion of lower part runner, and the effect of the protruding ring of stationary flow is the same with two protruding rings of extrusion for the melt material stream intensive mixing to the weld mark on ampoule surface is eliminated to this kind of mode.
Preferably, in the flow regulating device for the molding flow channel of the pipe blank suction mold, the middle section of the semi-ring flow channel II is communicated with the longitudinal flow channel, and two ends of the semi-ring flow channel II are respectively communicated with two symmetrical sides in the extrusion ring.
In this application, the even share of the material stream is divided into two with the semi-ring runner two of reposition of redundant personnel ring, will flow in the even cavity that sends into between squeeze ring and the main mandrel of material stream for the even mixture between squeeze ring and the main mandrel of ability of material stream to the weld mark on ampoule surface is eliminated to this kind of mode.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a sectional view B-B of fig. 1.
Detailed Description
The technical features of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
As shown in the figures, the invention relates to a flow regulating device for a molding runner of a pipe blank plastic uptake mold, which is characterized in that: the pipe blank plastic uptake mould comprises a pipe blank plastic uptake mould body 1, wherein a hollow tubular main mandrel 2 is arranged in the pipe blank plastic uptake mould body 1, a plastic uptake pipe 3 is arranged in the main mandrel 2, and the plastic uptake pipe 3 is sleeved in the main mandrel 2 and is coaxially arranged with the main mandrel 2; the lower end of the main mandrel 2 protrudes out of the lower end face of the tube blank plastic uptake mold main body 1, the lower end of the tube blank plastic uptake mold main body 1 is fixedly connected with a forming neck mold 4 with a hollow interior, the lower end of the main mandrel 2 is sleeved in the forming neck mold 4, and a lower runner is formed between the outer surface of the lower section of the main mandrel 2 and the inner surface of the forming neck mold 4 at intervals; a flow guide ring 6 is sleeved at the middle section of the main mandrel 2, a feed inlet 8 is arranged at the side part of the tube blank plastic uptake mold main body 1, a longitudinal flow passage is arranged in the flow guide ring 6, one end of the longitudinal flow passage in the flow guide ring 6 is communicated with the feed inlet 8, and a lower flow passage between the outer surface of the lower section of the main mandrel 2 and the inner surface of the molding neck mold 4 is communicated with the other end of the longitudinal flow passage; the side part of the pipe blank plastic uptake mould body 1 is provided with a flow adjusting screw 9, and the end part of the flow adjusting screw 9 is inserted into the longitudinal flow channel on the drainage ring 6 and is in threaded connection with the drainage ring 6.
In the technical scheme of this application, set up flow control screw 9 in the vertical runner department of drainage ring 6, can adjust the open area of the vertical runner in drainage ring 6 through rotatory flow control screw 9, and then the flow in the adjustment flow-through drainage ring 6, the size of velocity of flow, make the melt in the runner have more time to mix through the adjustment to flow, velocity of flow, improve the even degree of mixing, prevent that the weld mark from appearing on ampoule surface.
An upper bushing 5 and a splitter ring 7 are sleeved on the middle section of the main mandrel 2, and a drainage ring 6 is positioned between the upper bushing 5 and the splitter ring 7; the lower end face of the upper bushing 5 and the upper end face of the drainage ring 6 are respectively provided with a semi-annular groove I10, the lower end face of the upper bushing 5 and the groove I10 of the drainage ring 6 are butted into a semi-ring flow channel I, and two ends of the semi-ring flow channel I are respectively communicated with the feeding port 8 and the longitudinal flow channel; and the lower end surface of the drainage ring 6 and the upper end surface of the splitter ring 7 are respectively provided with a semi-annular groove II 11, the lower end surface of the drainage ring 6 and the groove II 11 on the upper end surface of the splitter ring 7 are butted into a semi-annular flow passage II, and the lower flow passage and the longitudinal flow passage are communicated with the semi-annular flow passage II.
In this application, the lower terminal surface of upper liner 5, a 10 butt joint of recess of drainage ring 6 are the semi-ring runner one, and semi-ring runner one is the half-ring, and the melt that gets into through feed inlet 8 has reduced the perpendicular impact of melt to the work piece through the buffering of semi-ring runner one of half-ring, reaches improvement working life, prevents the tired purpose of work piece. And the flow speed of the molten material can be slowed down by the first half-ring flow channel, so that the purpose of flow control in the drainage ring can be better achieved. The semi-ring runner forces the melting stock to change from linear motion to circular motion, so that the material flow can be better mixed, and the preparation is made for a basic circular pipe blank.
A guide sleeve 12 and a pressing block 13 are arranged on the side part of the pipe blank suction mould main body 1, the guide sleeve 12 is inserted into the pipe blank suction mould main body 1, and one end of the pressing block 13 is inserted into the side part of the pipe blank suction mould main body 1 and is in tight pressing contact with the end part of the guide sleeve 12; the flow adjusting screw 9 penetrates through the guide sleeve 12 and the pressing block 13 and is in threaded connection with the pressing block 13; the diameter of the end of the flow adjusting screw 9 is larger than the inner diameter of the longitudinal flow passage, and the flow adjusting screw 9 blocks the longitudinal flow passage when the end of the flow adjusting screw 9 and the inner side surface of the longitudinal flow passage.
In this application, flow control screw 9 adopts threaded connection with briquetting 13, through briquetting 13 and 12 fixed flow control screw 9's of uide bushing position and direction of motion, prevents that flow control screw 9 from deviating the position when rotatory adjustment for flow control screw 9 can the better cooperation of the vertical runner in the drainage ring 6.
The end part of the flow adjusting screw rod 9 is in a ball arc shape, and a groove matched with the end part of the flow adjusting screw rod 9 in shape is formed in the side wall of the longitudinal flow channel; the flow adjusting screw 9 is provided with two protruding limiting sections 91 arranged at intervals, and the two protruding limiting sections 91 are respectively positioned on two sides of the pressing block 13.
In this application, the spacing section 91 of two intervals settings on the flow control screw 9 has played the effect of preventing staying, and when flow control screw 9 reached extreme position, the spacing section 91 restriction flow control screw 9's of arch in the outside position prevented that it from hitting inside spare part. When the flow adjusting screw 9 is screwed outwards and the stroke reaches a certain degree, the inner convex limiting section 91 prevents the flow adjusting screw 9 from separating from the guide sleeve 12, and prevents glue leakage.
An extrusion ring 14 is sleeved at the middle section of the main mandrel 2, the extrusion ring 14 is positioned below the shunt ring 7 and is attached to the shunt ring 7, and an annular extrusion cavity is formed between the annular inner surface of the extrusion ring 14 and the outer surface of the main mandrel 2 at intervals; an annular extrusion convex ring 15 is arranged on the annular inner surface of the extrusion ring 14, and the annular inner surface of the extrusion convex ring 15 and the outer surface of the main mandrel 2 are arranged at intervals; the distance between the inner ring surface at the upper end of the extrusion ring 14 and the outer surface of the middle section of the main mandrel 2 is larger than the distance between the inner ring surface at the lower end of the extrusion ring 14 and the outer surface of the middle section of the main mandrel 2, and the distance between the inner ring surface at the lower end of the extrusion ring 14 and the outer surface of the middle section of the main mandrel 2 is larger than the distance between the extrusion bulge ring 15 and the outer surface of the middle section of the main mandrel.
In this application, the melt material stream that carries out the flow management and control through flow adjusting screw 9 enters into the runner space between extrusion ring 14 and main mandrel 2 after reaching semi-ring runner one, semi-ring runner two, improves the pressure of melt material stream through the extrusion limiting effect of extrusion bellied ring 15 for the melt material stream intensive mixing that gets into the runner space between extrusion ring 14 and the main mandrel 2, with this kind of weld mark that prevents to eliminate the ampoule surface.
The part of the main mandrel 2, which is positioned between the shunting ring 7 and the forming mouth mold 4, and the inner wall of the pipe blank plastic uptake mold main body 1 are arranged at intervals; the pipe embryo plastic uptake mould comprises a main mandrel 2 and a pipe embryo plastic uptake mould body 1, and is characterized in that a middle section supporting piece for supporting the distance between the main mandrel 2 and the inner wall of the pipe embryo plastic uptake mould body 1 is sleeved on the main mandrel 2, the middle section supporting piece is annular, the annular inner wall of the middle section supporting piece is attached to the outer surface of the main mandrel 2, and the annular outer wall of the middle section supporting piece is attached to the inner wall of the pipe.
The middle section supporting piece comprises a supporting ring 151, a second shunting ring 16 and a sealing ring 17, and the supporting ring 151, the second shunting ring 16 and the sealing ring 17 are sequentially sleeved on the main mandrel 2; a plurality of support ring diversion grooves 18 penetrating through the support ring 151 along the direction parallel to the length extension direction of the main mandrel 2 are formed in the support ring 151, and a plurality of diversion column cavities 19 penetrating through the second diversion ring 16 along the direction parallel to the length extension direction of the main mandrel 2 are formed in the second diversion ring 16; the section of the support ring diversion trench 18 in the direction perpendicular to the length extension direction of the main mandrel 2 is arc-shaped, the opening area of the lower end of the support ring diversion trench 18 is larger than the inner diameter of the diversion column cavity 19, and the support ring diversion trench 18 is communicated with the diversion column cavity 19; and a second annular extrusion cavity is formed between the annular inner surface of the sealing ring 17 and the outer surface of the main mandrel 2 at intervals, and the lower end of the guide post cavity 19 is communicated with the lower runner through the second extrusion cavity.
In this application, middle section support piece not only can carry out stable support to main mandrel 2, shaping bush 4, can also play the effect of slow flow, further improves the even degree of melt material stream velocity of flow and fuses the degree of consistency to the secondary slow flow of melt material stream through middle section support piece, further prevents the appearance of weld mark.
An annular second extrusion bulge ring 20 is arranged on the annular inner surface of the sealing ring 17, and the annular inner surface of the second extrusion bulge ring 20 and the outer surface of the main mandrel 2 are arranged at intervals; the distance between the inner ring surface at the upper end of the sealing ring 17 and the outer surface of the main mandrel 2 is larger than the distance between the inner ring surface at the lower end of the sealing ring 17 and the outer surface of the middle section of the main mandrel 2, and the distance between the inner ring surface at the lower end of the sealing ring 17 and the outer surface of the main mandrel 2 is larger than the distance between the second extrusion bulge ring 20 and the outer surface of the main mandrel 2.
In this application, the pressure of the melt flow is increased by the extrusion restriction of the second extrusion protrusion ring 20, so that the melt flow entering the flow channel space between the sealing ring 17 and the main mandrel 2 is fully mixed, thereby preventing the weld mark on the surface of the ampoule bottle from being eliminated.
The opening area of the upper end opening of the lower flow passage is larger than that of the lower end opening of the lower flow passage, an annular steady flow protruding ring 21 is arranged in the middle section of the lower flow passage, the steady flow protruding ring 21 is arranged on the outer ring surface of the middle section of one section of the inner part of the forming neck mold 4 in a sleeved mode of the main mandrel 2, and the outer ring surface of the steady flow protruding ring 21 and the inner surface of the forming neck mold 4 are arranged at intervals.
In this application, the open area of the upper end opening of lower part runner is greater than the open area of the lower extreme opening of lower part runner, and the melt material stream through lower part runner further improves the fusion degree of consistency through the extrusion of lower part runner, and the effect of the protruding ring of stationary flow 21 is the same with two 20 of the protruding ring of extrusion for the melt material stream intensive mixing to the weld mark on ampoule surface is eliminated to this kind of mode.
The middle section of the semi-ring flow channel II is communicated with the longitudinal flow channel, and two ends of the semi-ring flow channel II are respectively communicated with two symmetrical sides in the extrusion ring 14.
In this application, the semi-ring runner of splitter ring is two with the even share of melt material stream, will flow the even cavity that sends into between extrusion ring 14 and main dabber 2 of material stream for the even mixture between extrusion ring 14 and main dabber 2 of ability of material stream to the weld mark on ampoule surface is eliminated to this kind of mode.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a pipe embryo plastic uptake mould shaping runner flow control device which characterized in that: the pipe blank plastic uptake mould comprises a pipe blank plastic uptake mould main body (1), wherein a hollow tubular main mandrel (2) is arranged in the pipe blank plastic uptake mould main body (1), a plastic uptake pipe (3) is arranged in the main mandrel (2), and the plastic uptake pipe (3) is sleeved in the main mandrel (2) and is coaxially arranged with the main mandrel (2); the lower end of the main mandrel (2) protrudes out of the lower end face of the pipe blank plastic uptake mould body (1), the lower end of the pipe blank plastic uptake mould body (1) is fixedly connected with a forming opening mould (4) with a hollow interior, the lower end of the main mandrel (2) is sleeved in the forming opening mould (4), and a lower runner is arranged between the outer surface of the lower section of the main mandrel (2) and the inner surface of the forming opening mould (4) at intervals and is formed; a flow guide ring (6) is sleeved at the middle section of the main mandrel (2), a feed inlet (8) is formed in the side part of the tube blank plastic uptake mold main body (1), a longitudinal flow channel is formed in the flow guide ring (6), one end of the longitudinal flow channel in the flow guide ring (6) is communicated with the feed inlet (8), and a lower flow channel between the outer surface of the lower section of the main mandrel (2) and the inner surface of the forming opening mold (4) is communicated with the other end of the longitudinal flow channel; the side part of the pipe blank plastic uptake mould body (1) is provided with a flow adjusting screw rod (9), and the end part of the flow adjusting screw rod (9) is inserted into the longitudinal flow channel on the drainage ring (6) and is in threaded connection with the drainage ring (6).
2. The flow regulating device for the molding flow channel of the parison suction mold according to claim 1, wherein: an upper bushing (5) and a shunt ring (7) are sleeved on the middle section of the main mandrel (2), and a drainage ring (6) is positioned between the upper bushing (5) and the shunt ring (7); the lower end face of the upper bushing (5) and the upper end face of the drainage ring (6) are respectively provided with a semi-annular groove I (10), the lower end face of the upper bushing (5) and the groove I (10) of the drainage ring (6) are butted into a semi-ring flow channel I, and two ends of the semi-ring flow channel I are respectively communicated with the feeding port (8) and the longitudinal flow channel; and the lower end surface of the drainage ring (6) and the upper end surface of the flow distribution ring (7) are respectively provided with a semi-annular groove II (11), the lower end surface of the drainage ring (6) and the groove II (11) on the upper end surface of the flow distribution ring (7) are butted into a semi-ring flow channel II, and the lower flow channel and the longitudinal flow channel are communicated with the semi-ring flow channel II.
3. The flow regulating device for the molding flow channel of the parison suction mold according to claim 1, wherein: the side part of the pipe blank suction mould main body (1) is provided with a guide sleeve (12) and a pressing block (13), the guide sleeve (12) is inserted into the pipe blank suction mould main body (1), and one end of the pressing block (13) is inserted into the side part of the pipe blank suction mould main body (1) and is tightly pressed and contacted with the end part of the guide sleeve (12); the flow adjusting screw (9) penetrates through the guide sleeve (12) and the pressing block (13) and is in threaded connection with the pressing block (13); the diameter of the end part of the flow adjusting screw rod (9) is larger than the inner diameter of the longitudinal flow channel, and the longitudinal flow channel is blocked by the flow adjusting screw rod (9) when the end part of the flow adjusting screw rod (9) is arranged on the inner side surface of the longitudinal flow channel.
4. The flow regulating device for the molding flow channel of the tubing suction mold as claimed in claim 3, wherein: the end part of the flow adjusting screw rod (9) is in a ball head arc shape, and a groove matched with the end part of the flow adjusting screw rod (9) in shape is formed in the side wall of the longitudinal flow channel; the flow adjusting screw (9) is provided with two raised limiting sections (91) which are arranged at intervals, and the two raised limiting sections (91) are respectively positioned on two sides of the pressing block (13).
5. The flow regulating device for the molding flow channel of the tubing suction mold as claimed in claim 2, wherein: the middle section of the main mandrel (2) is sleeved with an extrusion ring (14), the extrusion ring (14) is positioned below the shunt ring (7) and attached to the shunt ring (7), and an annular extrusion cavity is formed between the annular inner surface of the extrusion ring (14) and the outer surface of the main mandrel (2) at intervals; an annular extrusion convex ring (15) is arranged on the annular inner surface of the extrusion ring (14), and the annular inner surface of the extrusion convex ring (15) and the outer surface of the main mandrel (2) are arranged at intervals; the distance between the inner ring surface at the upper end of the extrusion ring (14) and the outer surface of the middle section of the main mandrel (2) is larger than the distance between the inner ring surface at the lower end of the extrusion ring (14) and the outer surface of the middle section of the main mandrel (2), and the distance between the inner ring surface at the lower end of the extrusion ring (14) and the outer surface of the middle section of the main mandrel (2) is larger than the distance between the extrusion bulge ring (15) and the outer surface of the middle section of the main.
6. The flow regulating device for the molding flow channel of the tubing suction mold as claimed in claim 2, wherein: the part of the main mandrel (2) between the shunt ring (7) and the forming mouth mold (4) is arranged at intervals with the inner wall of the pipe blank plastic uptake mold main body (1); the pipe embryo plastic uptake mould is characterized in that a middle section supporting piece for supporting the space between the main mandrel (2) and the inner wall of the pipe embryo plastic uptake mould main body (1) is sleeved on the main mandrel (2), the middle section supporting piece is annular, the annular inner wall of the middle section supporting piece is attached to the outer surface of the main mandrel (2), and the annular outer wall of the middle section supporting piece is attached to the inner wall of the pipe embryo plastic uptake mould main body (1).
7. The flow regulating device for the molding flow channel of the tubing suction mold as claimed in claim 6, wherein: the middle section supporting piece comprises a supporting ring (151), a second shunt ring (16) and a sealing ring (17), and the supporting ring (151), the second shunt ring (16) and the sealing ring (17) are sequentially sleeved on the main mandrel (2); a plurality of support ring diversion grooves (18) penetrating through the support ring (151) along the direction parallel to the length extension direction of the main mandrel (2) are formed in the support ring (151), and a plurality of diversion column cavities (19) penetrating through the second diversion ring (16) along the direction parallel to the length extension direction of the main mandrel (2) are formed in the second diversion ring (16); the cross section of the support ring diversion trench (18) in the direction perpendicular to the length extension direction of the main mandrel (2) is arc-shaped, the opening area of the lower end of the support ring diversion trench (18) is larger than the inner diameter of the diversion column cavity (19), and the support ring diversion trench (18) is communicated with the diversion column cavity (19); and a second annular extrusion cavity is formed between the annular inner surface of the sealing ring (17) and the outer surface of the main mandrel (2) at intervals, and the lower end of the guide column cavity (19) is communicated with the lower runner through the second extrusion cavity.
8. The flow regulating device for the molding flow channel of the parison suction mold according to claim 7, wherein: an annular second extrusion bulge ring (20) is arranged on the annular inner surface of the sealing ring (17), and the annular inner surface of the second extrusion bulge ring (20) and the outer surface of the main mandrel (2) are arranged at intervals; the distance between the inner ring surface at the upper end of the sealing ring (17) and the outer surface of the main mandrel (2) is larger than the distance between the inner ring surface at the lower end of the sealing ring (17) and the outer surface of the middle section of the main mandrel (2), and the distance between the inner ring surface at the lower end of the sealing ring (17) and the outer surface of the main mandrel (2) is larger than the distance between the second extrusion bulge ring (20) and the outer surface of the main mandrel (2).
9. The flow regulating device for the molding flow channel of the parison suction mold according to claim 1, wherein: the opening area of the upper end opening of the lower flow passage is larger than that of the lower end opening of the lower flow passage, an annular steady flow protruding ring (21) is arranged in the middle section of the lower flow passage, the steady flow protruding ring (21) is arranged on the outer ring surface of the middle section of the section, sleeved on the forming die (4), of the main mandrel (2), and the outer ring surface of the steady flow protruding ring (21) and the inner surface of the forming die (4) are arranged at intervals.
10. The flow regulating device for the molding flow channel of the tubing suction mold as claimed in claim 5, wherein: the middle section of the semi-ring flow channel II is communicated with the longitudinal flow channel, and two ends of the semi-ring flow channel II are respectively communicated with two symmetrical sides in the extrusion ring (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287141.5A CN111055478A (en) | 2019-12-14 | 2019-12-14 | Flow regulating device for molding runner of pipe blank plastic uptake mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911287141.5A CN111055478A (en) | 2019-12-14 | 2019-12-14 | Flow regulating device for molding runner of pipe blank plastic uptake mold |
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| Publication Number | Publication Date |
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| CN111055478A true CN111055478A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911287141.5A Pending CN111055478A (en) | 2019-12-14 | 2019-12-14 | Flow regulating device for molding runner of pipe blank plastic uptake mold |
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| CN (1) | CN111055478A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406038A (en) * | 2020-10-30 | 2021-02-26 | 李应根 | Flow regulating mechanism for runner of injection mold |
-
2019
- 2019-12-14 CN CN201911287141.5A patent/CN111055478A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406038A (en) * | 2020-10-30 | 2021-02-26 | 李应根 | Flow regulating mechanism for runner of injection mold |
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