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CN-224210515-U - Die head melt flow guiding device of hollow plastic container blow molding machine

CN224210515UCN 224210515 UCN224210515 UCN 224210515UCN-224210515-U

Abstract

A die head melt flow guiding device of a blow molding machine for hollow plastic containers comprises a flow dividing plate melt flow regulating control mechanism and a melt flow dividing mechanism, wherein the melt flow dividing mechanism comprises a melt flow dividing device fixing plate, a melt flow dividing device and a melt introducing interface, and the flow dividing plate melt flow regulating control mechanism is arranged at the lower part of one side of a melt rear flow dividing plate opposite to a melt front flow dividing plate. The color changing time of the melt flow path and the die head is shortened, the friction between the melt and the wall of the flow channel is reduced, the shearing heat is reduced, and the melt flow is ensured to be uniform and smooth.

Inventors

  • JIA HUI
  • FENG ZHANGBIN
  • HUANG YU
  • XIU XIAOWEI
  • XIAO YUTAO
  • LI MING
  • LIU JUN

Assignees

  • 苏州同大机械股份有限公司

Dates

Publication Date
20260508
Application Date
20250725

Claims (10)

  1. 1. A die head melt flow guiding device of a blow molding machine for hollow plastic containers, comprising a flow guiding plate melt flow regulating control mechanism (1) and a melt flow guiding mechanism (2), wherein the melt flow guiding mechanism (2) comprises a melt flow guiding device fixing plate (21), a melt flow guiding device (22) and a melt introducing interface (23), the melt flow guiding device fixing plate (21) is connected with the melt wall thickness regulating mechanism from the upward side in the use state, the melt flow guiding device (22) comprises a melt front flow guiding plate (221) and a melt rear flow guiding plate (222), the melt front flow guiding plate (221) and the melt rear flow guiding plate (222) are mutually matched face to face and fixed with the downward side of the melt flow guiding device fixing plate (21), a melt front flow guiding plate flow guiding channel (2211) is formed on the downward side of the melt front flow guiding plate (221), a melt rear flow guiding plate flow guiding channel (2221) is formed on the upward side of the melt rear flow guiding plate (222), the melt front flow guiding plate and the melt rear flow guiding plate (2211) are corresponding to each other and are folded to form an integral flow guiding channel, the melt introducing interface (23) is fixed with one side of the melt front flow dividing plate (221) opposite to the melt rear flow dividing plate (222) in a state of being communicated with the melt front flow dividing plate flow dividing channel (2211) or one side of the melt rear flow dividing plate (222) opposite to the melt front flow dividing plate (221) in a state of being communicated with the melt rear flow dividing plate (2221), the flow dividing plate melt outflow regulating control mechanism (1) is arranged at the lower part of one side of the melt rear flow dividing plate (222) opposite to the melt front flow dividing plate (221), the structure of the melt rear flow dividing plate flow dividing channel (2221) is the same as that of the melt front flow dividing plate flow dividing channel (2211), the melt front flow dividing plate flow dividing channel (2211) comprises a first material receiving channel (22111) and a second material receiving channel (12), when the melt introducing interface (23) and one side of the melt front flow dividing plate (221) opposite to the melt rear flow dividing plate (221) are fixed, the first material receiving channel (22111) and the second material receiving channel (22112) are connected in a common mode, the first material receiving channel (22111) is connected with the second material receiving channel (22113) in an inverted mode, the first end is connected with the second end (22113) of the first material receiving channel (2211), in the use state, the die body of the hollow plastic container blow molding machine is communicated with the first Y-shaped runner (22113) and the second Y-shaped runner (22114).
  2. 2. A die melt flow guide apparatus of a blow molding machine for hollow plastic containers as set forth in claim 1 wherein said inverted first Y-shaped flow path (22113) forms a first front melt flow path outlet (22115) and a second front melt flow path outlet (22116) at the lower edge of said front melt flow path (221), said inverted second Y-shaped flow path (22114) forms a third front melt flow path outlet (22117) and a fourth front melt flow path outlet (22118) at the lower edge of said front melt flow path (221), and said feed jacket of said die body of said blow molding machine for hollow plastic containers is mated and communicated with said front melt flow path (221) at a position below said first front melt flow path outlet (22115), said second front melt flow path outlet (22116), said third front melt flow path outlet (22117) and said fourth front melt flow path outlet (22118) in use.
  3. 3. A die melt flow guide for a blow molding machine for hollow plastic containers as set forth in claim 2, wherein a first feed jacket engagement cavity (22119 a) in communication with the first melt front manifold first discharge port (22115) is formed at a location corresponding to the first melt front manifold first discharge port (22115), a second feed jacket engagement cavity (22119 b) in communication with the second melt front manifold second discharge port (22116) is formed at a location corresponding to the second melt front manifold second discharge port (22116), a third feed jacket engagement cavity (22119 c) in communication with the first melt front manifold third discharge port (22117) is formed at a location corresponding to the first melt front manifold third discharge port (22117), and a fourth feed jacket engagement cavity (19 d) in communication with the first melt front manifold fourth discharge port (22118) is formed at a location corresponding to the first melt front manifold fourth discharge port (22118), the first feed jacket engagement cavity (2213 b) is formed at a location corresponding to the first melt front manifold third discharge port (22125), the third feed jacket engagement cavity (22119 c) is formed at a location corresponding to the third melt front manifold third discharge port (22125), and a third feed jacket engagement cavity (22119 d) is formed at a location corresponding to the third feed jacket engagement cavity (22119 b), the third feed jacket engagement cavity (22119 d) is formed at a location corresponding to the third feed jacket engagement cavity (2215 b), the third feed jacket engagement cavity (2213 b) is formed at a location corresponding to the third feed jacket engagement cavity (22125) is formed at a location corresponding to the third feed jacket engagement cavity, and the third intake port (2213 b engagement cavity is formed at the first intake port is, 2225b, 2225 c) and a fourth adjusting column hole (2225 d) of the discharge quantity of the rear melt splitter plate, the number of the melt outflow adjusting control mechanisms (1) of the splitter plate is four, and the positions of the first, second, third and fourth adjusting column holes (2225 a, 2225b, 2225c, 2225 d) of the discharge quantity of the rear melt splitter plate are respectively corresponding to the lower part of one side of the rear melt splitter plate (222) opposite to the front melt splitter plate (221) are fixed.
  4. 4. A die melt flow guiding device of a blow molding machine for hollow plastic containers according to claim 3, characterized in that the four flow-out regulating control mechanisms (1) comprise a regulating fixed block (11), a regulating column (12) and a regulating column screw (13), the regulating fixed block (11) is slidingly matched with the first, second, third and fourth regulating column holes (2225 a, 2225b, 2225c, 2225 d) of the melt rear flow-dividing plate at the positions corresponding to the first, second, third and 2225d of the melt rear flow-dividing plate respectively, the regulating fixed block fixing screw (111) is used for fixing the side, namely the rear side, of the melt rear flow-dividing plate (222) opposite to the front flow-dividing plate (221), the regulating column (12) is slidingly matched with the first, second, third and fourth regulating column holes (2225 a, 2225b, 2225c, 2225 d) of the melt rear flow-dividing plate at the front side of the regulating fixed block (11) and the rear flow-out regulating column (12) respectively, and the flow-out regulating mechanism is closed by the flow-out regulating mechanism until the flow-out regulating mechanism is greatly controlled by the front flow-out regulating fixed block (1).
  5. 5. A die melt flow guiding device of a blow molding machine for hollow plastic containers as set forth in claim 2, wherein a front melt flow dividing plate receiving hole (2212) penetrating from the left side to the right side of the front melt flow dividing plate (221) is provided at a central position of the upper part in the length direction of the front melt flow dividing plate (221), the melt introducing port (23) is fixed to a side of the front melt flow dividing plate (221) opposite to the rear melt flow dividing plate (222) at a position corresponding to the front melt flow dividing plate receiving hole (2212) and communicates with the front melt flow dividing plate receiving hole (2212), one ends of the first and second material receiving flow passages (22111, 22112) are joined to each other at the position of the front melt flow dividing plate receiving hole (2212) and communicate with the front melt flow dividing plate receiving hole (2212), and the other ends of the first and second material receiving passages (22111, 22112) are inclined downward at the same inclination angle α to each other.
  6. 6. The die melt guide device of a blow molding machine for hollow plastic containers according to claim 2, wherein one ends of the first receiving runner (22111) and the second receiving runner (22112) are symmetrically distributed with a center of the melt front dividing plate receiving hole (2212) as a longitudinal axis (22121) and form a herringbone runner layout, and a longitudinal axis included angle beta with equal angles is formed between one ends of the first receiving runner (22111) and the second receiving runner (22112) and the longitudinal axis (22121).
  7. 7. The die melt guiding device of a blow molding machine for hollow plastic containers as set forth in claim 2, wherein said inverted first Y-shaped flow path (22113) and said inverted second Y-shaped flow path (22114) are formed with a vertical axis angle θ equal to an angle between each side branch and the central vertical axis (22122) with the central vertical axis (22122) of the Y-shape as a symmetry axis.
  8. 8. A die melt guide for a blow molding machine for hollow plastic containers as recited in claim 5, wherein said angle of inclination α is an obtuse angle having a degree of 100-110 °.
  9. 9. A die melt guide for a blow molding machine for hollow plastic containers as recited in claim 6, wherein said included angle β is an obtuse angle having a degree of 100-110 °.
  10. 10. The apparatus of claim 7, wherein the vertical angle θ is an obtuse angle having a degree of 100-110 °.

Description

Die head melt flow guiding device of hollow plastic container blow molding machine Technical Field The utility model belongs to the technical field of blow molding machines for hollow plastic containers, and particularly relates to a die head melt flow guiding device of a blow molding machine for hollow plastic containers. Background The dies of the foregoing hollow plastic container blow molding machine can be found in published chinese patent documents such as CN101628472a (hollow blow molding die), CN106003665A (double-layer flow-guiding and stock-storing die device of blow molding machine), CN2481508Y (visible liquid level line molding die for plastic container) and CN206605764U (die structure for blow molding hollow plastic container with transparent liquid level line or color stripe). Not limited to the above-exemplified patents, although each has the corresponding technical advantages, the melt channels are designed to be transversely arranged, in particular, the melt channels on the guide plates of the structural system of the guide device for receiving the melt to be sent from the feeding port (also called "feed pipe") are horizontally arranged, and the horizontally arranged melt channels are required to overcome friction between the melt and the channel walls by additional pressure, particularly high-viscosity materials such as HDPE, are easy to be detained, the shearing heat is more remarkable because the horizontal channels are required to maintain the flow by higher pressure, bubbles are easy to overflow at the top of the horizontal channels, finally, product defects are formed, the horizontal section melt of the horizontal channels is easy to be cooled and solidified to be blocked, the volume of the guide device such as the guide plates of the horizontal channels is relatively large, the weight of the die is increased, and the number of heating sections of the heater is increased, which is unfavorable for energy saving. Disclosure of utility model The utility model aims to provide a die head melt flow guiding device of a hollow plastic container blow molding machine, which is beneficial to overcoming the design bias, changing a melt flow channel for being sent to a flow guiding plate from transverse arrangement to longitudinal arrangement and conveying the melt to a feeding sleeve in a longitudinal flow state, so as to avoid melt retention, shorten a melt flow path and correspondingly shorten the color changing time of a die head, remarkably reduce friction between the melt and a flow channel wall, reduce shearing heat, ensure uniform and smooth melt flow, and be beneficial to reducing the volume of the flow guiding plate, correspondingly reduce the weight of the die head and the number of heating sections, thereby realizing energy saving. The object of the utility model is achieved by a die head melt flow guide for a blow molding machine for hollow plastic containers, comprising a flow-dividing plate melt flow-out control and a melt flow-dividing mechanism, which comprises a melt flow-dividing device fixing plate, which in the use state is connected from its side facing upwards to a melt wall thickness adjusting mechanism, and a melt flow-dividing device, which comprises a melt front flow-dividing plate and a melt rear flow-dividing plate which are in face-to-face engagement with one another and are fixed to the side facing downwards of the melt flow-dividing device fixing plate, a front melt splitter plate split runner is formed on one side of the front melt splitter plate, which faces the rear melt splitter plate, and a rear melt splitter plate split runner is formed on one side of the rear melt splitter plate, which faces the front melt splitter plate, and the front melt splitter plate split runners and the rear melt splitter plate split runners are mutually corresponding and mutually folded to form an integral runner, and a melt introducing interface is fixed with one side of the front melt splitter plate, which faces away from the rear melt splitter plate, in a state of being communicated with the front melt splitter plate split runner or with one side of the rear melt splitter plate, which faces away from the front melt splitter plate, in a state of being communicated with the rear melt splitter plate split runner; the flow-out regulating and controlling mechanism of the flow-dividing plate is arranged at the lower part of one side of the flow-dividing plate back to the flow-dividing plate front and is characterized in that the flow-dividing channel of the flow-dividing plate back to the flow-dividing plate is of the same structure as the flow-dividing channel of the flow-dividing plate front, and the flow-dividing channel of the flow-dividing plate front comprises a first material receiving flow channel and a second material receiving flow channel, when the flow-in interface is fixed with one side of the flow-dividing plate front to the flow-dividing plate back to the flow-dividing pla