Sol material distributing mechanism in machine head

Abstract

A material distributing mechanism for a sol material in a machine head comprises a machine head body, core cavities formed in the machine head body and cores arranged in the core cavities, runners are formed in the outer walls of the cores, the number of the core cavities is two, and the two core cavities are symmetrically arranged on the left side and the right side of the machine head body respectively; a feeding hole is formed in the center of the side wall of the front side of the machine head body; a limiting hole communicated with the feeding hole is formed in the center of the side wall of the rear side of the machine head body; the limiting hole and the feeding hole are coaxial, the diameter of the limiting hole is larger than that of the feeding hole, and a rear-end hole opening of the feeding hole is located in the center of the bottom of the limiting hole. A limiting sleeve matched with the limiting hole is screwed in the limiting hole; an adjusting shaft matched with the limiting sleeve is arranged in the limiting sleeve; and the rear end of the adjusting shaft backwards penetrates out of the limiting sleeve. According to the material distributing mechanism for the sol material in the machine head, the blow molding efficiency can be effectively improved, a plurality of parisons simultaneously formed by the machine head can be ensured to be consistent, and the blow molding quality is effectively ensured.

Description

Technical Field

[0001] The utility model relates to the field of blow molding machines, in particular to a sol material distributing mechanism in a machine head. Background Art

[0002] A blow molding machine is a plastic processing machine. When the blow molding machine is running, the inner sol material will be squeezed into the head of the blow molding machine, so that it enters the flow channel on the outer wall of the core in the head, and is fully fused through the flow channel on the outer wall of the core to form a parison. Then the head places the parison in a split mold. After closing the mold, compressed air is immediately introduced into the parison to inflate the plastic parison and stick it to the inner wall of the mold. After cooling and demolding, various hollow products are obtained, thus completing the blow molding.

[0003] The machine head of a traditional blow molding machine has only one core, so only one parison can be formed each time the blow molding is performed, which limits the blow molding efficiency and makes it impossible to improve the blow molding efficiency. If the machine head adopts a double-core structure, although the blow molding efficiency can be doubled, the inner sol entering the machine head is split into two streams and flows into the flow channels of the corresponding cores respectively. In the actual diversion process, the flow rates of the inner sol flowing out of the flow channels of different cores are very likely to be different, resulting in differences in the parisons entering the split molds, and ultimately the consistency of the quality of the blow-molded products cannot be guaranteed. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a sol material distributing mechanism in a die head, which can not only effectively improve the blow molding efficiency, but also ensure that a plurality of blanks formed simultaneously by the die head can maintain consistency, thereby effectively ensuring the blow molding quality.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The utility model discloses a sol material distributing mechanism in a machine head, comprising a machine head body, a core cavity arranged in the machine head body and a core arranged in the core cavity, a flow channel is arranged on the outer wall of the core, the number of the core cavities is 2, and they are symmetrically arranged on the left and right sides of the machine head body respectively; a feed hole is arranged at the center of the front side wall of the machine head body; a limiting hole which is intersecting with the feed hole is arranged at the center of the rear side wall of the machine head body; the limiting hole is coaxial with the feed hole, the diameter of the limiting hole is larger than the diameter of the feed hole, and the rear end opening of the feed hole is located at the center of the bottom of the limiting hole; a threaded connection is arranged in the limiting hole There is a matching limit sleeve; the limit sleeve is provided with an adjusting shaft matching it; the rear end of the adjusting shaft passes backwards to the outside of the limit sleeve; the front end of the adjusting shaft passes forwards into the feed hole, and the outer wall of the front end of the adjusting shaft fits with the inner wall of the feed hole; a material dividing structure is provided at the front end of the adjusting shaft; the left and right sides of the inner wall of the feed hole are provided with dividing holes that are connected with the core cavities on the left and right sides of the machine head body, and the outer end openings of the dividing holes are opposite to the flow channels on the outer wall of the core; the outer wall of the adjusting shaft is provided with a limiting part located between the bottom of the limit hole and the front end face of the limit sleeve.

[0007] The material dividing structure includes a material dividing notch arranged at the lower part of the front end surface of the adjusting shaft; a material dividing plate is arranged in the center of the material dividing notch, and the material dividing plate divides the material dividing notch into a left adjusting notch opposite to the inner end opening of the left material dividing hole and a right adjusting notch opposite to the inner end opening of the right material dividing hole.

[0008] The front ends of the inner walls on the upper sides of the left adjustment notch and the right adjustment notch are both provided with a drainage surface, and the rear ends of the drainage surfaces are inclined downward.

[0009] A sealing ring is arranged outside the adjusting shaft between the bottom of the limiting hole and the front side wall of the limiting part, and between the rear side wall of the limiting part and the front end surface of the limiting sleeve.

[0010] The sealing ring is made of copper.

[0011] The inner wall of the front end opening of the feed hole is provided with a ring-shaped feed opening.

[0012] The rear end of the limiting sleeve passes backwards to the outside of the limiting hole, and the outer wall of the rear end of the limiting sleeve is provided with a plurality of positioning planes evenly distributed in a circumference.

[0013] The outer wall at the rear end of the adjusting shaft is provided with a plurality of auxiliary planes which are evenly distributed around the circumference.

[0014] The width of the front end of the dividing plate gradually decreases as it moves forward.

[0015] The beneficial effects of the utility model are:

[0016] Compared with the prior art, the sol-gel material dividing mechanism in the machine head adopting the structure of the utility model has two core cavities, thereby having two cores that can form blanks, and the dividing structure arranged at the front end of the adjusting shaft can divide the sol-gel material entering into the feed hole into two parts, which respectively enter the flow channels on the outer walls of the cores on the left and right sides to form blanks, and finally blow molded into the actually required products, thereby achieving the effect of blow molding two products at the same time, effectively improving the blow molding efficiency, and can effectively adjust the flow rates entering into the dividing holes on the left and right sides by rotating the adjusting shaft, ensuring that the two blanks formed at the same time can maintain consistency, thereby effectively ensuring the blow molding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view cross-sectional view of the sol material distributing mechanism in the die head of the utility model;

[0018] Figure 2 yes Figure 1 An enlarged view of part A;

[0019] Figure 3 It is a right side cross-sectional view of the sol material distributing mechanism in the die head of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the adjustment shaft;

[0021] Figure 5 It is a structural schematic diagram of a sol material distributing mechanism in the die head of the utility model from one angle;

[0022] Figure 6 It is a structural schematic diagram of the sol material distributing mechanism in the machine head of the utility model from another angle. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0024] See also Figures 1 to 6The utility model provides a sol material distributing mechanism in a die, comprising a die body 1, a core cavity 2 arranged in the die body 1, and a core 3 arranged in the core cavity 2, a flow channel 4 is arranged on the outer wall of the core 3, and the number of the core 3 cavities is 2, which are symmetrically arranged on the left and right sides of the die body 1; a feed hole 5 is arranged at the center of the front side wall of the die body 1; a limiting hole 6 which is intersecting with the feed hole 5 is arranged at the center of the rear side wall of the die body 1; the limiting hole 6 is coaxial with the feed hole 5, the diameter of the limiting hole 6 is larger than the diameter of the feed hole 5, and the rear end opening of the feed hole 5 is located at the center of the bottom of the limiting hole 6; a threaded connection is provided in the limiting hole 6 A matching limiting sleeve 7; an adjusting shaft 8 matching therewith is arranged inside the limiting sleeve 7; the rear end of the adjusting shaft 8 passes backwards to the outside of the limiting sleeve 7; the front end of the adjusting shaft 8 passes forwards into the feeding hole 5, and the outer wall of the front end of the adjusting shaft 8 fits with the inner wall of the feeding hole 5; a material dividing structure is arranged at the front end of the adjusting shaft 8; the left and right sides of the inner wall of the feeding hole 5 are provided with dividing holes 10 which are connected with the core cavity 2 on the left and right sides of the head body 1, and the outer end opening of the dividing hole 10 is opposite to the flow channel 4 on the outer wall of the core 3; the outer wall of the adjusting shaft 8 is provided with a limiting portion 11 located between the bottom of the limiting hole 6 and the front end face of the limiting sleeve 7.

[0025] The material dividing structure includes a material dividing notch 12 arranged at the lower part of the front end surface of the adjusting shaft 8; a material dividing plate 13 is arranged at the center of the material dividing notch 12, and the material dividing plate 13 divides the material dividing notch 12 into a left adjusting notch 1201 opposite to the inner end opening of the left material dividing hole 10 and a right adjusting notch 1202 opposite to the inner end opening of the right material dividing hole 10.

[0026] The front ends of the upper inner walls of the left adjustment notch 1201 and the right adjustment notch 1202 are both provided with a drainage surface 16 , and the rear ends of the drainage surface 16 are inclined downward.

[0027] A sealing ring 17 is provided outside the adjusting shaft 8 between the bottom of the limiting hole 6 and the front side wall of the limiting portion 11 , and between the rear side wall of the limiting portion 11 and the front end surface of the limiting sleeve 7 .

[0028] The sealing ring 17 is made of copper.

[0029] The inner wall of the front end of the feed hole 5 is provided with a ring-shaped feed opening 18 .

[0030] The rear end of the limiting sleeve 7 extends backward to the outside of the limiting hole 6 , and the outer wall of the rear end of the limiting sleeve 7 is provided with a plurality of positioning planes 19 evenly distributed in a circumference.

[0031] The outer wall of the rear end of the adjusting shaft 8 is provided with a plurality of auxiliary planes 20 evenly distributed around the circumference.

[0032] The width of the front end of the dividing plate 13 gradually decreases forward.

[0033] The method of using the utility model is as follows:

[0034] When the inner sol passes through the feed hole 5, it will be directly divided into two parts under the action of the dividing plate 13, and flow into the left adjustment gap 1201 and the right adjustment gap 1202 respectively, and the left adjustment gap 1201 is opposite to the inner end hole opening of the left dividing hole 10, and the right adjustment gap 1202 is opposite to the inner end gap of the right dividing hole 10, and the outer wall of the adjusting shaft 8 is in contact with the inner wall of the feed hole 5, so the inner sol entering the left adjustment gap 1201 and the right adjustment gap 1202 cannot pass through the outer wall of the adjusting shaft 8. The liquid continues to flow backward through the gap between the inner wall of the feed hole 5 and can only enter the distribution hole 10 through the inner end opening of the distribution hole 10, and then flows into the flow channel 4 on the outer wall of the core 3 opposite to the outer end opening of the distribution hole 10, and forms a preform under the guidance and fusion of the flow channel 4, and is finally blown into the actual required product under the action of the split mold. There is a core 3 in each of the two core cavities 2 for guiding the internal sol material, so two preforms can be formed at the same time, and the two preforms can be blown at the same time through the two split molds, which effectively improves the blow molding efficiency.

[0035] If it is found that the amounts of internal sol materials of the two preforms are inconsistent when the two split molds are blow-molding the two preforms at the same time, the internal sol materials entering the flow channel 4 on the outer walls of the left and right cores 3 can be adjusted by adjusting the shaft 8 to effectively ensure that the preforms formed by the cores 3 on the left and right sides are consistent. When it is necessary to adjust the flow rate of the internal sol materials to the distribution holes 10 on both sides, the limit sleeve 7 can be rotated to move the limit sleeve 7 backward for a certain stroke. At this time, the limit part 11 on the adjusting shaft 8 is no longer tightly pressed between the bottom of the limit hole 6 and the front end face of the limit sleeve 7. The limit part 11 can rotate in the limit hole 6, thereby realizing the smooth rotation of the adjusting shaft 8. When it is necessary to rotate the adjusting shaft 8, the staff can rotate the adjusting shaft 8 through the rear end of the adjusting shaft 8 exposed to the outside. When the adjusting shaft 8 rotates, the left adjusting notch 1201, the right adjusting notch 1202 and the upper part of the adjusting shaft 8 are The outer walls will rotate, and the outer wall of the adjusting shaft 8 itself will fit with the inner wall of the feeding hole 5. Therefore, when the outer wall of the adjusting shaft 8 rotates to the position of the dividing hole 10 on one side, the outer wall of the adjusting shaft 8 will block a part of the inner end opening of the dividing hole 10, effectively reducing the cross-sectional area of ​​the inner end opening of the dividing hole 10, thereby effectively reducing the flow of the internal sol material entering the dividing hole 10, and the left adjusting notch 1201 and the right adjusting notch 1202 are symmetrically arranged on the left and right sides of the front end of the adjusting shaft 8. When the flow of the internal sol material entering the dividing hole 10 on one side decreases, the flow of the internal sol material entering the dividing hole 10 on the other side will increase, thereby balancing the flow of the dividing holes 10 on the left and right sides, effectively ensuring that the machine head can form two consistent blanks at one time, blow-molded into products of the same quality, ensuring the blow molding quality, and avoiding uneven quality of the blow-molded products.

[0036] From the above, it can be known that the utility model has two core cavities 2, and thus has two cores 3 that can form parisons, and the dividing structure arranged at the front end of the adjusting shaft 8 can divide the inner sol material entering into the feed hole 5 into two parts, which respectively enter the flow channels 4 on the outer walls of the core 3 on the left and right sides to form parisons, and finally blow molded into the actually required products, thereby achieving the effect of blow molding two products at the same time, effectively improving the blow molding efficiency, and being able to effectively adjust the flow rates entering into the dividing holes 10 on the left and right sides by rotating the adjusting shaft 8, ensuring that the two parisons formed at the same time can maintain consistency, thereby effectively ensuring the blow molding quality.

[0037] A drainage surface 16 is provided at the front end of the upper inner wall of the left adjustment notch 1201 and the right adjustment notch 1202. The rear end of the drainage surface 16 is inclined downward. The drainage surface 16 can quickly guide the two parts of the sol material separated by the dividing plate into the dividing hole 10, thereby achieving a drainage effect.

[0038] A sealing ring 17 is provided on the outside of the adjusting shaft 8 between the bottom of the limiting hole 6 and the front side wall of the limiting part 11, and between the rear side wall of the limiting part 11 and the front end face of the limiting sleeve 7. The sealing ring 17 between the bottom of the limiting hole 6 and the front side wall of the limiting part 11 can ensure the sealing of the right end of the feed hole 5, and the sealing ring 17 between the rear side wall of the limiting part 11 and the front end face of the limiting sleeve 7 can ensure the sealing between the rear side wall of the limiting part 11 and the front end face of the limiting sleeve 7, forming two seals, thereby avoiding the backward leakage of the internal sol material to the greatest extent and achieving the effect of preventing leakage.

[0039] The sealing ring 17 is made of copper. The copper sealing ring can use its own elastic deformation characteristics to effectively fill the gap that needs to be sealed, and can form an effective sealing layer to avoid medium leakage to the greatest extent, thereby further avoiding leakage of the internal sol. The internal sol has a high temperature, and the copper sealing ring has the characteristics of high temperature resistance, and the thermal expansion coefficient is relatively large, so it is not easy to leak due to thermal expansion and contraction in a hot environment.

[0040] The inner wall of the front end of the feed hole 5 is provided with an annular feed opening, which can effectively increase the initial feed area of ​​the feed hole 5 and facilitate the feeding of the internal sol material.

[0041] The rear end of the limiting sleeve 7 extends backward to the outside of the limiting hole 6, and the outer wall of the rear end of the limiting sleeve 7 is provided with a plurality of circumferentially evenly distributed locking planes 19. The limiting sleeve 7 can be easily rotated by simply locking a wrench on two of the locking planes 19, which is convenient for loosening or tightening the limiting sleeve 7. After the adjusting shaft 8 completes the flow adjustment of the inner sol material by rotation, the limiting sleeve 7 is tightened and reset, so that the limiting portion 11 is clamped again between the bottom of the limiting hole 6 and the front end surface of the limiting sleeve 7, so that the position of the adjusting shaft 8 after the flow adjustment is completed can be fixed.

[0042] The outer wall of the rear end of the adjusting shaft 8 is provided with a plurality of auxiliary planes 20 evenly distributed in a circumference. The adjusting shaft 8 can be easily rotated by simply clamping a wrench on two of the auxiliary planes 20, so as to adjust the flow rate of the internal sol material.

[0043] The width of the front end of the dividing plate 13 gradually decreases forward, so that the dividing plate 13 has a sharp front end, which can quickly divide the inner sol material entering the feed hole 5 into two parts like a cutting knife.

Claims

1. A sol material dispensing mechanism in a die head, comprising a die head body, a core cavity arranged in the die head body, and a core arranged in the core cavity, wherein a flow channel is arranged on the outer wall of the core, and characterized in that: There are two core cavities, which are symmetrically arranged on the left and right sides of the machine head body; there is a feed hole in the center of the front side wall of the machine head body; a limiting hole that is connected to the feed hole is arranged in the center of the rear side wall of the machine head body; the limiting hole is coaxial with the feed hole, the diameter of the limiting hole is larger than the diameter of the feed hole, and the rear end opening of the feed hole is located at the center of the bottom of the limiting hole; a limiting sleeve matching it is screwed in the limiting hole; an adjusting shaft matching it is arranged in the limiting sleeve; the rear end of the adjusting shaft passes backwards to the outside of the limiting sleeve; the front end of the adjusting shaft passes forward into the feed hole, and the outer wall of the front end of the adjusting shaft fits with the inner wall of the feed hole; a dividing structure is arranged at the front end of the adjusting shaft; dividing holes that are connected to the core cavities on the left and right sides of the inner wall of the feed hole are arranged on the left and right sides of the inner wall of the machine head body, and the outer end opening of the dividing hole is opposite to the flow channel on the outer wall of the core; the outer wall of the adjusting shaft is provided with a limiting part located between the bottom of the limiting hole and the front end face of the limiting sleeve.

2. The sol material distributing mechanism in the die head according to claim 1, characterized in that: The material dividing structure includes a material dividing notch arranged at the lower part of the front end surface of the adjusting shaft; a material dividing plate is arranged in the center of the material dividing notch, and the material dividing plate divides the material dividing notch into a left adjusting notch opposite to the inner end opening of the left material dividing hole and a right adjusting notch opposite to the inner end opening of the right material dividing hole.

3. The sol material distributing mechanism in the die head according to claim 2, characterized in that: The front ends of the inner walls on the upper sides of the left adjustment notch and the right adjustment notch are both provided with a drainage surface, and the rear ends of the drainage surfaces are inclined downward.

4. The sol material distributing mechanism in the die head according to claim 1, characterized in that: A sealing ring is arranged outside the adjusting shaft between the bottom of the limiting hole and the front side wall of the limiting part, and between the rear side wall of the limiting part and the front end surface of the limiting sleeve.

5. The sol material distributing mechanism in the die head according to claim 4, characterized in that: The sealing ring is made of copper.

6. The sol material distributing mechanism in the die head according to claim 1, characterized in that: The inner wall of the front end opening of the feed hole is provided with a ring-shaped feed opening.

7. The sol material distributing mechanism in the die head according to claim 1, characterized in that: The rear end of the limiting sleeve passes backwards to the outside of the limiting hole, and the outer wall of the rear end of the limiting sleeve is provided with a plurality of positioning planes evenly distributed in a circumference.

8. The sol material distributing mechanism in the die head according to claim 1, characterized in that: The outer wall at the rear end of the adjusting shaft is provided with a plurality of auxiliary planes which are evenly distributed around the circumference.

9. The sol material distributing mechanism in the die head according to claim 2, characterized in that: The width of the front end of the dividing plate gradually decreases as it moves forward.

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