Die head melt flow guide device of hollow plastic container blowing forming machine

Abstract

A die head melt flow guiding device of a hollow plastic container blowing forming machine comprises a flow dividing plate melt outflow adjusting control mechanism and a melt flow dividing mechanism, and the melt flow dividing mechanism comprises a melt flow dividing device fixing plate, a melt flow dividing device and a melt leading-in connector; the splitter plate melt outflow adjusting control mechanism is arranged on the lower portion of the side, back to the front melt splitter plate, of the rear melt splitter plate, and is characterized in that the structure of the rear melt splitter plate sub-runner is the same as that of the front melt splitter plate sub-runner, and the front melt splitter plate sub-runner comprises a first material receiving runner and a second material receiving runner; when the melt leading-in connector is fixed to one side of the melt front splitter plate, one end of the first material receiving runner and one end of the second material receiving runner are jointly communicated with the melt leading-in connector, and the other end of the first material receiving runner and the other end of the second material receiving runner incline downwards, form an inverted first Y-shaped runner and an inverted second Y-shaped runner and are communicated with the die head body. The melt flow path is shortened, the die head color changing time is shortened, friction between the melt and the runner wall is relieved, shearing heat is reduced, and it is guaranteed that the melt flows evenly and smoothly.

Description

Technical Field

[0001] This utility model belongs to the technical field of hollow plastic container blow molding machine, specifically relating to a mold head melt guiding device for a hollow plastic container blow molding machine. Background Technology

[0002] The aforementioned mold heads for hollow plastic container blow molding machines are frequently found in published Chinese patent documents, such as CN101628472A (hollow blow molding mold head), CN106003665A (double-layer guide material storage mold head device for blow molding machine), CN2481508Y (plastic container visible liquid level line molding mold head) and CN206605764U (mold head structure for blowing hollow plastic containers with transparent liquid level lines or colored stripes).

[0003] While the patents listed above each have their own technical advantages, almost all of them design the melt flow channel as horizontally arranged. Specifically, the melt flow channel on the guide plate of the structural system used to guide the melt delivered by the feed port (also known as the "feed pipe") is horizontally arranged. The horizontally arranged melt flow channel requires additional pressure to overcome the friction between the melt and the flow channel wall, especially for high-viscosity materials such as HDPE, which are prone to stagnation. Since the horizontal flow channel requires higher pressure to maintain flow, the shear heat is more significant. Bubbles are prone to overflowing at the top of the horizontal flow channel, eventually forming product defects. The melt in the horizontal section of the horizontal flow channel is prone to cooling and solidification, resulting in blockage. Furthermore, the flow guiding device of the horizontal flow channel, such as the guide plate, is relatively large, which increases the weight of the die head and the number of heating stages of the heater, which is not conducive to energy saving. Utility Model Content

[0004] The objective of this invention is to provide a die melt guiding device for a hollow plastic container blow molding machine that helps overcome design bias by changing the arrangement of the melt flow channel, which is used to receive the melt from the feed interface to the guide plate, from a transverse arrangement to a more longitudinal arrangement and convey it to the feed sleeve in a longitudinal flow state. This avoids melt stagnation, shortens the melt flow path, and correspondingly shortens the die head color change time. It also significantly reduces the friction between the melt and the flow channel wall, reduces shear heat, ensures uniform and smooth melt flow, and facilitates the reduction of the guide plate volume, the corresponding reduction of die head weight, and the reduction of the number of heating sections, thereby achieving energy saving.

[0005] The present invention achieves its objective as follows: a melt guiding device for the die head of a hollow plastic container blow molding machine, comprising a flow divider plate, a melt outflow adjustment and control mechanism, and a melt diversion mechanism. The melt diversion mechanism includes a melt diversion device fixing plate, a melt diversion device, and a melt inlet port. In use, the melt diversion device fixing plate is connected to a melt wall thickness adjustment mechanism on its upward-facing side. The melt diversion device includes a front melt diversion plate and a rear melt diversion plate. The rear flow dividers of the melt are face-to-face and fixed to the downward-facing side of the melt flow divider fixing plate. A flow channel is formed on the side of the front flow divider facing the rear flow divider, and a flow channel is formed on the side of the rear flow divider facing the front flow divider. The front and rear flow divider channels correspond to each other and merge to form a unified flow channel. The melt inlet is connected to the flow channel of the front flow divider and faces away from the front flow divider. One side of the melt back distributor plate is fixed, or in a state of communicating with the melt back distributor plate's distribution channel, it is fixed to the side of the melt back distributor plate opposite to the melt front distributor plate; the melt outflow adjustment and control mechanism of the distributor plate is located at the lower part of the side of the melt back distributor plate opposite to the melt front distributor plate, characterized in that: the structure of the melt back distributor plate's distribution channel is the same as the structure of the melt front distributor plate's distribution channel, and the melt front distributor plate's distribution channel includes a first receiving channel and a second receiving channel, when the melt inlet... When the first receiving channel and the second receiving channel are fixed to the side opposite to the rear receiving channel of the melt, one end of both channels is connected to the melt inlet. The other end of the first receiving channel is inclined downwards and forms an inverted first Y-shaped channel, while the other end of the second receiving channel is inclined downwards and forms an inverted second Y-shaped channel. In use, the die head body of the hollow plastic container blow molding machine is connected to the first Y-shaped channel and the second Y-shaped channel.

[0006] In a specific embodiment of this utility model, the inverted first Y-shaped flow channel forms a first outlet and a second outlet of the melt front diverter plate along the lower edge of the melt front diverter plate, and the inverted second Y-shaped flow channel forms a third outlet and a fourth outlet of the melt front diverter plate along the lower edge of the melt front diverter plate. In use, the feed sleeve of the die head body of the hollow plastic container blow molding machine is positioned below the melt front diverter plate at a position corresponding to the first outlet, second outlet, third outlet, and fourth outlet of the melt front diverter plate, and is in contact with and communicates with the melt front diverter plate.

[0007] In another specific embodiment of this utility model, a first feed sleeve mating cavity communicating with the first discharge port of the melt front diverter plate is formed on the lower surface of the melt front diverter plate, at a position corresponding to the first discharge port of the melt front diverter plate; a second feed sleeve mating cavity communicating with the second discharge port of the melt front diverter plate is formed at a position corresponding to the second discharge port of the melt front diverter plate; a third feed sleeve mating cavity communicating with the third discharge port of the melt front diverter plate is formed at a position corresponding to the third discharge port of the melt front diverter plate; and a fourth feed sleeve mating cavity communicating with the fourth discharge port of the melt front diverter plate is formed at a position corresponding to the fourth discharge port of the melt front diverter plate; the die head body The positions corresponding to the first, second, third, and fourth feed sleeve mating cavities are aligned with the front flow divider plate of the melt. On the rear flow divider plate, at the central positions above the first, second, third, and fourth feed sleeve mating cavities respectively, there are first, second, and third adjustment column holes for the discharge volume of the rear flow divider plate and a fourth adjustment column hole for the discharge volume of the melt. There are four flow divider plate melt outflow adjustment control mechanisms, which are fixed to the lower part of the side of the rear flow divider plate opposite to the front flow divider plate, corresponding to the positions of the first, second, third, and fourth adjustment column holes for the discharge volume of the melt.

[0008] In another specific embodiment of this utility model, the four-diverter melt outflow adjustment and control mechanism includes an adjustment fixing block, an adjustment column, and an adjustment column screw. The adjustment fixing block is fixed to the rear side of the melt diverter, opposite to the front diverter, at the positions corresponding to the first, second, third, and fourth adjustment column holes of the melt rear diverter, respectively. The adjustment column slides in conjunction with the first, second, third, and fourth adjustment column holes of the melt rear diverter, with a forward and backward displacement. The adjustment column screw is screwed onto the adjustment fixing block and is fixed to the rear end of the adjustment column at the front side of the adjustment fixing block. The diverter melt outflow adjustment and control mechanism adjusts and controls the amount of material flowing to the aforementioned feed sleeve until it is closed.

[0009] In another specific embodiment of this utility model, a melt front distributor plate receiving hole is provided at the center of the upper part of the melt front distributor plate along its length direction, extending from the left side to the right side of the melt front distributor plate. The melt inlet is fixed to the side of the melt front distributor plate opposite to the melt rear distributor plate at the position corresponding to the melt front distributor plate receiving hole and communicates with the melt front distributor plate receiving hole. One end of the first receiving channel and the second receiving channel converge at the position of the melt front distributor plate receiving hole and communicate with the melt front distributor plate receiving hole. The other ends of the first receiving channel and the second receiving channel are inclined downward at the same inclination angle α.

[0010] In another specific embodiment of this utility model, one end of the first receiving channel and the second receiving channel are symmetrically distributed with the center of the receiving hole of the melt front flow divider plate as the longitudinal axis and form a herringbone channel layout. Furthermore, one end of the first receiving channel and the second receiving channel each form an angle β with the longitudinal axis with equal angles.

[0011] In a further specific embodiment of this utility model, the inverted first Y-shaped flow channel and the inverted second Y-shaped flow channel are symmetrical about the central vertical axis of the Y-shape, and the two side branches form an equal vertical axis angle θ with the central vertical axis.

[0012] In a more specific embodiment of this utility model, the tilt angle α is an obtuse angle with a degree of 100-110°.

[0013] In yet another specific embodiment of this utility model, the included angle β of the longitudinal axis is an obtuse angle, and the degree of the obtuse angle is 100-110°.

[0014] In yet another specific embodiment of this utility model, the included angle θ of the vertical axis is an obtuse angle, and the degree of the obtuse angle is 100-110°.

[0015] The technical solution provided by this utility model overcomes the biases of conventional design concepts by designing the melt front manifold channel with one end connected to the melt inlet, while the other end slopes downward and forms a first and second receiving channel structure with inverted first and second Y-shaped flow channels respectively. Furthermore, the first and second receiving channels form a flow channel distribution tending towards a vertical state, and the first and second Y-shaped flow channels are vertically aligned, thus making the melt front and rear manifold channels vertically arranged. This makes the melt flow channel structure more rational than the horizontal or radial arrangement in existing technologies, thereby shortening the melt flow path and correspondingly shortening the die color change time, significantly reducing friction between the melt and the flow channel wall, reducing shear heat, and ensuring uniform and smooth melt flow. It also helps to avoid melt stagnation, ensuring uniform and smooth melt flow. Due to the rational design of the melt front and rear manifold channels, the volume can be reduced, the die weight can be lightened, and the heating section can be reduced accordingly, thus demonstrating economy and energy saving. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the right side of the melt front diverter plate 221 of the melt diverter device 22 shown.

[0018] In the diagram: 1. Melt flow adjustment and control mechanism for the flow divider plate; 11. Adjustment fixing block; 111. Adjustment fixing block fixing screw; 12. Adjustment column; 13. Adjustment column screw; 2. Melt flow divider mechanism; 21. Melt flow divider device fixing plate; 211. Melt flow divider device fixing plate heater; 212. Fixing screw on the front flow divider plate; 213. Fixing screw on the rear flow divider plate; 214. Adjustment plate guide post clearance hole; 22. Melt flow divider device; 221. Front flow divider plate; 2211. Flow divider channel of the front flow divider plate; 22111. First receiving channel; 22112. Second receiving channel; 22113. First Y-shaped channel; 22114. Second Y-shaped channel; 22115. First outlet of the front flow divider plate; 22116. Second outlet of the front flow divider plate; 22117. 22118. Third outlet of the melt front diverter plate; 22119a. Fourth outlet of the melt front diverter plate; 22119b. First feed sleeve mating cavity; 22119c. Second feed sleeve mating cavity; 22119d. Third feed sleeve mating cavity; 22119d. Fourth feed sleeve mating cavity; 2212. Material receiving hole of the melt front diverter plate; 22121. Longitudinal axis; 22122. Central vertical axis; 2213. 2214. Fixing screw holes on the front distributor plate of the melt; 222. Rear distributor plate of the melt; 2221. Distributor channel of the rear distributor plate of the melt; 2222. Fixing screw holes on the rear distributor plate of the melt; 2223. Fixing screw holes on the rear distributor plate of the melt; 2224. Fixing screws on the front and rear distributor plates of the melt; 2225a. First adjusting column hole for discharge rate of the rear distributor plate of the melt; 2225b. Second adjusting column hole for discharge rate of the rear distributor plate of the melt; 2225c. Third adjusting column hole for discharge rate of the rear distributor plate of the melt; 2225d. Fourth adjusting column hole for discharge rate of the rear distributor plate of the melt; 223. Heater of the melt distributor plate; 23. Melt inlet port; 231. Fixing block for the melt inlet port of the melt; α. Inclination angle; β. Angle of longitudinal axis; θ. Angle of vertical axis; γ. Upper angle of central axis. Detailed Implementation

[0019] In order to better understand the technical essence and beneficial effects of this utility model, the applicant provides a detailed description below by way of embodiments. However, the description of the embodiments is not intended to limit the solution of this utility model. Any formal but not substantive equivalent transformations made based on the concept of this utility model should be considered within the scope of the technical solution of this utility model.

[0020] In the following description, all directional or orientational concepts involving up, down, left, right, front, and back are based on, unless otherwise stated, the following. Figure 1 The location and state of the object are taken as examples, and therefore should not be construed as a special limitation on the technical solution provided by this utility model.

[0021] Please see Figure 1 and Figure 2 The diagram shows a melt flow regulation and control mechanism 1 including a flow divider plate and a melt flow divider mechanism 2. The melt flow divider mechanism 2 includes a melt flow divider fixing plate 21, a melt flow divider device 22, and a melt inlet port 23. In use, the melt flow divider fixing plate 21 is connected to a melt wall thickness adjustment mechanism on its upward-facing side. The melt flow divider device 22 includes a front melt flow divider plate 221 and a rear melt flow divider plate 222, which are face-to-face with each other. Figure 1 (As shown, the front and rear sides are aligned) and fixed to the downward-facing side of the aforementioned melt diversion device fixing plate 21. A melt front diversion channel 2211 is formed on the side of the melt front diversion plate 221 facing the melt rear diversion plate 222, and a melt rear diversion channel 2221 is formed on the side of the melt rear diversion plate 222 facing the melt front diversion plate 221. The melt front and rear diversion channels 2211 and 2221 correspond to each other and merge to form a complete flow channel. In this embodiment, the melt inlet port 23 is connected to the aforementioned... When the melt front flow divider channel 2211 is connected to the melt front flow divider 221, it is fixed to the side of the melt front flow divider 221 opposite to the melt rear flow divider 222, that is, fixed to the front side of the melt front flow divider 221. However, it can also be fixed to the side of the melt rear flow divider 222 opposite to the melt front flow divider 221 when it is connected to the melt rear flow divider channel 2221, that is, fixed to the rear side of the melt rear flow divider 222. The aforementioned flow divider melt outflow adjustment and control mechanism 1 is located at the lower part of the side of the melt rear flow divider 222 opposite to the melt front flow divider 221.

[0022] Since the structure and function of the melt wall thickness adjustment mechanism mentioned above are existing technologies, for example, please refer to the Chinese patent CN206605764U mentioned by the applicant in the background technology section above, it will not be described again.

[0023] As the key technical point of the technical solution provided by this utility model is that since the structure of the melt rear flow divider channel 2221 is the same as the structure of the melt front flow divider channel 2211, the applicant will only describe the melt front flow divider channel 2211 in detail below. The melt front flow divider 2211 includes a first receiving flow channel 22111 and a second receiving flow channel 22112. Since the melt inlet 23 mentioned above in this embodiment is fixed to the side of the melt front flow divider 221 that is opposite to the melt rear flow divider 222, one end of the first receiving flow channel 22111 and the second receiving flow channel 22112 are connected to the melt inlet 23. The other end of the first receiving flow channel 22111 is inclined downward and forms an inverted first Y-shaped flow channel 22113. The other end of the second receiving flow channel 22112 is inclined downward and forms an inverted second Y-shaped flow channel 22114. In the use state, the die head body 3 of the hollow plastic container blow molding machine is connected to the first Y-shaped flow channel 22113 and the second Y-shaped flow channel 22114.

[0024] Based on the above explanation and in combination Figure 1 and Figure 2 As shown, the flow channels 2211 and 2221 of the front and rear flow plates of the melt essentially form a tree-like structure that is completely symmetrical to each other. The tree-like structure referred to here means that each of the flow channels 2211 and 2221 of the front and rear flow plates of the melt is divided into two, and then each two is divided into four.

[0025] See also Figure 1 and Figure 2The upper surface of the melt front diverter plate 221 along its length is provided with fixing screw holes 2213 spaced apart, and the upper surface of the melt rear diverter plate 222 along its length is provided with fixing screw holes 2222 spaced apart. The front side of the melt diverter plate 21 along its length is provided with fixing screws 212 at positions corresponding to the fixing screw holes 2213. Similarly, the rear side of the melt diverter plate 21 along its length is provided with fixing screws 213 at positions corresponding to the fixing screw holes 2222. The fixing screws 212 and 213 on the melt front and rear diverters are screwed into the fixing screw holes 2213 and 2222 respectively to fix the melt diverter plate 21 to the melt front and rear diverters 221 and 222. The fixed plate 21 of the melt diversion device is also provided with eight pairs of corresponding adjustment plate guide post clearance holes 214 at intervals for sliding cooperation of the adjustment plate guide post of the aforementioned melt wall thickness adjustment mechanism. On the body of the melt front distributor plate 221, and in the area avoiding the melt front distributor plate channel 2211, there are densely arranged melt front distributor plate fixing screw holes 2214. On the body of the melt rear distributor plate 222, and in the area avoiding the melt rear distributor plate channel 2221 and in the position corresponding to the melt front distributor plate fixing screw holes 2214, there are densely arranged melt rear distributor plate fixing screw holes 2223. Melt front and rear distributor plate fixing screws 2224 are provided on the melt rear distributor plate fixing screw holes 2223. The melt front and rear distributor plates 221 and 222 are fixed into a whole by screwing the melt front and rear distributor plate fixing screws 2224 into the melt front distributor plate fixing screw holes 2214.

[0026] Depend on Figure 1 As shown, in this embodiment, the melt inlet port 23 is fixed to the side of the melt front distributor plate 221 facing away from the melt rear distributor plate 222. Therefore, the melt inlet port 23 is fixed to the melt front distributor plate 221 by means of a melt inlet port fixing block 231, and communicates with the melt front distributor plate distribution channel 2211. Preferably, a melt inlet port fixing block heater is provided on the outer wall of the melt inlet port fixing block 231.

[0027] The aforementioned inverted first Y-shaped flow channel 22113 forms a first outlet 22115 and a second outlet 22116 of the melt front diverter plate at the lower edge of the aforementioned melt front diverter plate 221. The aforementioned inverted second Y-shaped flow channel 22114 forms a third outlet 22117 and a fourth outlet 22118 of the melt front diverter plate at the lower edge of the aforementioned melt front diverter plate 221. In the working state, the die head body of the hollow plastic container blow molding machine is positioned below the first outlet 22115, the second outlet 22116, the third outlet 22117, and the fourth outlet 22118 of the melt front diverter plate, and is in contact with and mates with the melt front diverter plate 221.

[0028] Since the main body of the mold head of the aforementioned hollow plastic container blow molding machine is also existing technology, see CN206605764U for example, the applicant will not elaborate further.

[0029] On the lower surface of the aforementioned melt front diversion plate 221, at a position corresponding to the first outlet 22115 of the melt front diversion plate, a first feed sleeve mating cavity 22119a communicating with the first outlet 22115 of the melt front diversion plate is formed; on a position corresponding to the second outlet 22116 of the melt front diversion plate, a second feed sleeve mating cavity 22119b communicating with the second outlet 22116 of the melt front diversion plate is formed; on the lower surface of the aforementioned melt front diversion plate 221, at a position corresponding to the second outlet 22116 of the melt front diversion plate, a first feed sleeve mating cavity 22119a communicating with the first outlet 22115 of the melt front diversion plate is formed; on the lower surface of the aforementioned melt front diversion plate 221, at a position corresponding to the second outlet 22116 of the melt front diversion plate, a second feed sleeve mating cavity 22119b communicating with the second outlet 22116 of the melt front diversion plate is formed; on the lower surface of the aforementioned melt front diversion plate 221, at a position corresponding to the second outlet 22116 of the melt front diversion plate, a second feed sleeve mating cavity 22119a ... The third outlet 22117 of the plate is configured with a third feed sleeve mating cavity 22119c communicating with the third outlet 22117 of the melt front diverter plate, and a fourth feed sleeve mating cavity 22119d communicating with the fourth outlet 22118 of the melt front diverter plate is configured at the position corresponding to the fourth outlet 22118 of the melt front diverter plate; the aforementioned die head body simultaneously corresponds to the first, second, and third feed sleeve mating cavities 22119a, 22119c, and 22119d. Positions 19b, 22119c, and the fourth feed sleeve mating cavity 22119d mate with the aforementioned melt front diverter plate 221; on the melt rear diverter plate 222, at a centrally located position above the aforementioned first, second, and third feed sleeve mating cavities 22119a, 22119b, 22119c, and fourth feed sleeve mating cavity 22119d, respectively, are respectively provided first, second, and third adjusting column holes 2 for the melt rear diverter plate discharge rate. The aforementioned melt flow regulation and control mechanism 1 consists of four holes, 225a, 2225b, 2225c and 2225d, which correspond to the positions of the first, second, third and fourth adjustment pin holes 2225a, 2225b, 2225c and 2225d of the melt flow rate of the melt back diverter plate. These holes are fixed to the lower part of the side of the melt back diverter plate 222 opposite to the melt front diverter plate 221.

[0030] The four split-flow plate melt outflow regulating and controlling mechanisms 1 described above include an adjusting fixed block 11, an adjusting column 12, and an adjusting column screw 13. The adjusting fixed block 11 is fixed to the side of the rear melt split-flow plate 222 facing away from the front melt split-flow plate 221 (i.e., the rear side) at positions corresponding to the first, second, third, and fourth adjusting column holes 2225a, 2225b, 2225c, and 2225d of the melt outflow of the rear melt split-flow plate by means of an adjusting fixed block fixing screw 111. The adjusting column 12 is slidably engaged with the first, second, third, and fourth adjusting column holes 2225a, 2225b, 2225c, and 2225d of the melt outflow of the rear melt split-flow plate with forward and backward displacement. The adjusting column screw 13 is screwed onto the adjusting fixed block 11 and fixed to the rear end of the adjusting column 12 on the front side of the adjusting fixed block 11. The split-flow plate melt outflow regulating and controlling mechanism 1 is used to adjust and control the amount of material flowing forward to the feed sleeve and until it is closed.

[0031] A melt front split-flow plate receiving hole 2212 that penetrates from the left side to the right side of the melt front split-flow plate 221 is provided at the central position in the upper part of the length direction of the melt front split-flow plate 221 described above. The melt introduction interface 23 described above is fixed to the side of the melt front split-flow plate 221 facing away from the rear melt split-flow plate 222 at a position corresponding to the melt front split-flow plate receiving hole 2212 and is communicated with the melt front split-flow plate receiving hole 2212. One ends of the first receiving flow channel 22111 and the second receiving flow channel 22112 converge with each other at the position of the melt front split-flow plate receiving hole 2212 and are communicated with the melt front split-flow plate receiving hole 2212. The other ends of the first receiving flow channel 22111 and the second receiving flow channel 22112 are inclined downward at the same inclination angle α ( Figure 2 marked).

[0032] One ends of the first receiving flow channel 22111 and the second receiving flow channel 22112 are symmetrically distributed with the central axis 22121 of the melt front split-flow plate receiving hole 2212 as the longitudinal axis and form a herringbone flow channel layout (i.e., form a herringbone flow channel structure of Chinese characters), and an equal longitudinal axis angle β ( Figure 2 marked) is formed between one end of each of the first receiving flow channel 22111 and the second receiving flow channel 22112 and the longitudinal axis 22121.

[0033] The inverted first Y-shaped flow channel 22113 and the inverted second Y-shaped flow channel 22114 are symmetric about the central vertical axis 22122 of the Y shape, and an equal vertical axis angle θ ( Figure 2 marked) is formed between each of the two side branches (i.e., one flow channel on each side) and the central vertical axis 22122.

[0034] In this embodiment, the aforementioned tilt angle α is an obtuse angle, preferably 100-110°, and most preferably 105°; in this embodiment, 105° is selected. The aforementioned longitudinal axis angle β is an obtuse angle, preferably 100-110°, and most preferably 105°; in this embodiment, 105° is selected. The aforementioned vertical axis angle θ is an obtuse angle, preferably 100-110°, and most preferably 105°; in this embodiment, 105° is selected.

[0035] The tilt angle α, the included angle β of the longitudinal axis and the included angle θ of the vertical axis described above, and the central axes 22111 and 22112 of the first and second receiving channels are respectively connected to the upper part of the central axis 22122 of the first and second Y-shaped channels 22113 and 22114. Figure 2 The positions shown form an angle γ at the top of the central axis, which can reduce material retention.

[0036] from Figure 1 and Figure 2 As shown in the structure and based on professional knowledge, there are four main body parts of the mold head. The feed sleeves of each main body of the mold head are respectively the first, second, and third feed sleeve mating cavities 22119a, 22119b, and 22119c, and the fourth feed sleeve mating cavity 22119d.

[0037] In summary, the technical solution provided by this utility model makes up for the shortcomings of the prior art, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A melt guiding device for the die head of a blow molding machine for hollow plastic containers, comprising a flow divider plate melt outflow adjustment and control mechanism (1) and a melt diversion mechanism (2), wherein the melt diversion mechanism (2) comprises a melt diversion device fixing plate (21), a melt diversion device (22) and a melt inlet port (23), wherein the melt diversion device fixing plate (21) is connected to a melt wall thickness adjustment mechanism on its upward side in the use state, and the melt diversion device (22) comprises a melt front diversion plate (221) and a melt rear diversion plate (222), wherein the melt front diversion plate (221) and the melt rear diversion plate (222) are face-to-face and fixed to the downward side of the melt diversion device fixing plate (21), wherein a melt front diversion plate is formed on the side of the melt front diversion plate (221) facing the melt rear diversion plate (222). A flow channel (2211) is formed on the side of the melt rear flow channel (222) facing the melt front flow channel (221). The melt front and rear flow channel channels (2211, 2221) correspond to each other and merge to form an integral flow channel. The melt inlet (23) is fixed to the side of the melt front flow channel (221) opposite to the melt rear flow channel (222) when it is connected to the melt front flow channel (2211), or fixed to the side of the melt rear flow channel (222) opposite to the melt front flow channel (221) when it is connected to the melt rear flow channel (2221). The flow channel melt outflow adjustment and control mechanism (1) is set at the lower part of the side of the melt rear flow channel (222) opposite to the melt front flow channel (221). The structure of the melt rear distributor plate channel (2221) is the same as that of the melt front distributor plate channel (2211). The melt front distributor plate channel (2211) includes a first receiving channel (22111) and a second receiving channel (22112). When the melt inlet port (23) is fixed to the side of the melt front distributor plate (221) opposite to the melt rear distributor plate (222), the first receiving channel (22111) and the second receiving channel (22112)... One end of the first receiving channel (22111) is connected to the melt inlet (23), and the other end of the first receiving channel (22111) is inclined downward and forms an inverted first Y-shaped channel (22113), while the other end of the second receiving channel (22112) is inclined downward and forms an inverted second Y-shaped channel (22114). In use, the die head body of the hollow plastic container blow molding machine is connected to the first Y-shaped channel (22113) and the second Y-shaped channel (22114).

2. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 1, characterized in that: The inverted first Y-shaped flow channel (22113) forms a first outlet (22115) and a second outlet (22116) of the melt front splitter plate (221) at the lower edge of the melt front splitter plate (221), and the inverted second Y-shaped flow channel (22114) forms a third outlet (22117) and a melt front splitter plate at the lower edge of the melt front splitter plate (221). Fourth discharge port (22118); In use, the feed sleeve of the die head body of the hollow plastic container blow molding machine is positioned below the first discharge port (22115), the second discharge port (22116), the third discharge port (22117), and the fourth discharge port (22118) of the melt front diverter plate, and is in contact with and communicates with the melt front diverter plate (221).

3. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 2, characterized in that: On the lower surface of the melt front diverter plate (221) and at a position corresponding to the first outlet (22115) of the melt front diverter plate, a first feed sleeve mating cavity (22119a) communicating with the first outlet (22115) of the melt front diverter plate is formed; on a position corresponding to the second outlet (22116) of the melt front diverter plate, a second feed sleeve mating cavity (22119b) communicating with the second outlet (22116) of the melt front diverter plate is formed; on a position corresponding to the first outlet (22115) of the melt front diverter plate, a first feed sleeve mating cavity (22119a) communicating with the second outlet (22116) of the melt front diverter plate is formed; on a position corresponding to the first outlet (22115) of the melt front diverter plate, a second feed sleeve mating cavity (22119b) communicating with the second outlet (22116) of the melt front diverter plate is formed. The third outlet (22117) of the flow plate is configured with a third feed sleeve mating cavity (22119c) communicating with the third outlet (22117) of the melt front flow divider plate, and a fourth feed sleeve mating cavity (22119d) communicating with the fourth outlet (22118) of the melt front flow divider plate is configured at a position corresponding to the fourth outlet (22118) of the melt front flow divider plate; the die head body (3) is configured with a third feed sleeve mating cavity (22119a) corresponding to the first, second, and third feed sleeve mating cavities (22119a) at the same time. The positions of the first, second, and third feed sleeve mating cavities (22119a, 22119b, 22119c) and the fourth feed sleeve mating cavity (22119d) are matched with the front flow divider plate (221) of the melt; on the rear flow divider plate (222), and at the central position above the first, second, and third feed sleeve mating cavities (22119a, 22119b, 22119c) and the fourth feed sleeve mating cavity (22119d), respectively, there are first, second, and third adjustment column holes for the discharge volume of the rear flow divider plate. (2225a, 2225b, 2225c) and the fourth adjusting column hole (2225d) of the discharge amount of the melt back diverter plate. The number of the diverter plate melt outflow adjustment control mechanism (1) is four and they are respectively corresponding to the positions of the first, second, third and fourth adjusting column holes (2225a, 2225b, 2225c, 2225d) of the discharge amount of the melt back diverter plate and fixed to the lower part of the side of the melt back diverter plate (222) opposite to the melt front diverter plate (221).

4. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 3, characterized in that: The four-slot melt flow regulation and control mechanism (1) includes an adjustment fixing block (11), an adjustment column (12), and an adjustment column screw (13). The adjustment fixing block (11) is positioned at the positions corresponding to the first, second, third, and fourth adjustment column holes (2225a, 2225b, 2225c, 2225d) of the melt flow rate of the melt back slot plate, respectively. The adjustment fixing block fixing screw (111) is used to fix the melt back slot plate (222) on the side opposite to the melt front slot plate (221), i.e., the back slot. The side is fixed, and the adjusting column (12) is displaced back and forth and slides in fit with the first, second, third and fourth adjusting column holes (2225a, 2225b, 2225c, 2225d) of the melt flow rate of the back diversion plate. The adjusting column screw (13) is screwed on the adjusting fixing block (11) and fixed to the rear end of the adjusting column (12) on the front side of the adjusting fixing block (11). The flow rate of the melt flow out of the diversion plate is adjusted and controlled by the flow control mechanism (1) until it is closed.

5. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 2, characterized in that: A melt front distributor plate receiving hole (2212) is provided at the center of the upper part of the melt front distributor plate (221) along the length direction, extending from the left side to the right side of the melt front distributor plate (221). The melt inlet port (23) is fixed to the side of the melt front distributor plate (221) opposite to the melt rear distributor plate (222) at the position corresponding to the melt front distributor plate receiving hole (2212) and communicates with the melt front distributor plate receiving hole (2212). One end of the first receiving channel (22111) and the second receiving channel (22112) converge at the position of the melt front distributor plate receiving hole (2212) and communicate with the melt front distributor plate receiving hole (2212). The other end of the first receiving channel (22111) and the second receiving channel (22112) are inclined downward at the same inclination angle α.

6. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 2, characterized in that: The first receiving channel (22111) and the second receiving channel (22112) are symmetrically distributed with the center of the receiving hole (22122) of the melt front flow divider plate as the longitudinal axis (22121) and form a herringbone channel layout. The first receiving channel (22111) and the second receiving channel (22112) each form an angle β with the longitudinal axis (22121) with equal angles.

7. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 2, characterized in that: The inverted first Y-shaped flow channel (22113) and the inverted second Y-shaped flow channel (22114) are symmetrical about the central vertical axis (22122) of the Y-shape, and the two side branches form an equal vertical axis angle θ with the central vertical axis (22122).

8. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 5, characterized in that: The tilt angle α is an obtuse angle, with a degree of 100-110°.

9. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 6, characterized in that: The included angle β of the longitudinal axis is an obtuse angle, with a degree measure of 100-110°.

10. The melt guiding device for the die head of a hollow plastic container blow molding machine according to claim 7, characterized in that: The included angle θ of the vertical axis is an obtuse angle, with a degree measure of 100-110°.

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