CN219294633U

CN219294633U - Curb Dan Hujiao mold

Info

Publication number: CN219294633U
Application number: CN202321330668.3U
Authority: CN
Inventors: 边玉彬; 齐文; 朱新超; 刘振强; 王睿
Original assignee: Shandong Wenyuan Environmental Technology Co ltd
Current assignee: Shandong Wenyuan Environmental Technology Co ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-07-04
Anticipated expiration: 2033-05-26

Abstract

The utility model provides a die for a curb Dan Hujiao, which belongs to the technical field of dies, and is used for automatically separating a material handle from a product in the process of separating a movable die from a fixed die, so that the productivity of the product is improved; the curb Dan Hujiao mold comprises a movable mold, a fixed mold and an ejection device, wherein a main runner is arranged in the fixed mold, the movable mold and the fixed mold are assembled to form a first sub runner, a second sub runner and a plurality of product cavities, the main runner is communicated with the first sub runner, the second sub runner is communicated with the first sub runner, a sprue is arranged in the fixed mold, the sprue is communicated with the second sub runner, the top of the side wall of the product cavity, the central axis of the sprue forms an included angle of 40-45 degrees with the central axis of the sub runner, and the lower part of the junction of the product cavity and the sprue is used as a first cutting edge.

Description

Curb Dan Hujiao mold

Technical Field

The utility model relates to the technical field of dies, in particular to a die for a curb Dan Hujiao.

Background

The industrial production uses a die to realize the processing of the appearance of an article by changing the physical state of a formed material so as to obtain a required product;

the mould generally comprises a movable mould and a fixed mould, the movable mould and the fixed mould can be separated and combined, a mould cavity, a diversion channel and a pouring gate are formed after the movable mould and the fixed mould are closed, and injection molding materials are sequentially injected into the mould cavity through the diversion channel and the pouring gate; the mold cavity forms a product, the sprue and the sprue form a material handle, the movable mold and the fixed mold are separated after forming, and the product and the material handle are ejected by the ejection device;

through retrieving, chinese patent with publication number CN218171091U discloses a forming die for producing EPE foam corner protector, which comprises a lower die, an upper die, a stripper plate rotatably arranged in the lower die, a liquid guide cavity arranged in the upper die, a plurality of evenly distributed liquid outlet holes arranged at the bottom of the liquid guide cavity, and a liquid inlet pipe fixedly arranged at the top of the upper die. The formed corner protector is convenient to take out through rotation of the stripper plate, the corner protector cannot be damaged, and the production efficiency is improved;

however, because the material bundle formed in the liquid guide cavity is waste, the material bundle and the product are required to be separated manually or by a machine, and in the rapid industrial production of the injection molding of the mold, the production rate of the product is certainly reduced by manual separation, and the production cost of enterprises is obviously greatly increased by machine separation.

Disclosure of Invention

In view of the above, the present utility model aims to provide a die for curb Dan Hujiao, which automatically separates a handle from a product during a moving die and a fixed die separation process, thereby improving the productivity of the product.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a curb Dan Hujiao mould, includes movable mould, cover half and ejecting device, be provided with the sprue in the cover half, first subchannel, second subchannel, a plurality of product die cavity that movable mould, cover half compound die formed, the sprue intercommunication first subchannel, the second subchannel intercommunication first subchannel, the runner has been seted up in the cover half, the runner intercommunication the lateral wall top of second subchannel, product die cavity, just the central axis of runner with the central axis of subchannel is 40 to 45 contained angles, product die cavity with the lower part of runner junction is used as first blade.

Through above-mentioned technical scheme, with the runner setting in the cover half, when the injection molding machine makes the movable mould remove, product and waste material pass through first blade separation, the connection of waste material and product is cut through the split mould process automation of mould, has avoided present subchannel setting at movable mould and cover half concatenation face and has caused material to be unable autosegregation with the product, and need the condition of manual work or machine separation, has improved the productivity ratio of product when having saved manpower and financial resources.

Preferably, the cross section of the connecting end of the gate and the second runner is larger than the cross section of the connecting end of the gate and the product cavity.

Through the technical scheme, the cross section of the connecting end of the gate and the second sub-runner is larger than that of the gate and the product cavity, so that the resistance of molten material flowing into the gate from the second sub-runner is reduced, the cross section of the connecting end of the gate and the product cavity is thin enough, and the material handle can be smoothly sheared during die separation.

Preferably, the product cavities are symmetrical front and back relative to the first sub-runner or are symmetrical left and right relative to the second sub-runner.

Through the technical scheme, the molten material can fill each product cavity at constant speed, and the problems of material shortage and overlarge internal stress of the product are avoided.

Preferably, the top of product die cavity with the runner junction is equipped with the plug-in strip, the plug-in strip with the junction of runner is used as the second blade, the top fixedly connected with elastic component of plug-in strip, bilateral symmetry the plug-in strip passes through the connecting rod to be fixed, the bottom slope of connecting rod is connected with the ejector pin, the ejector pin extends to the cover half with the contact surface of movable mould, just plug-in strip, ejector pin, connecting rod are all slided and are located in the cover half, when the mould die sinking, the ejector pin protrusion in the cover half.

According to the technical scheme, the fixed die and the movable die are separated, the elastic piece pushes the gate blade to be close to the gate, the junction of the gate and the product cavity is cut off from the top to the bottom by the second cutting edge, waste and products are separated by the first cutting edge and the second cutting edge, smooth separation is ensured, and the service life of the first cutting edge is prolonged by the second cutting edge; the knife switch moves and drives the connecting rod to slide, the connecting rod slides and enables the ejector rod to slide obliquely, the ejector rod protrudes out of the contact surface of the fixed die and the movable die, when the fixed die and the movable die are folded, the movable die pushes the ejector rod back, and the ejector rod drives the connecting rod and the knife switch to return to the original position, so that the spring is compressed and used for the next separation.

Preferably, the sliding distance of the knife gate to the bottom is half of the width of the joint of the product cavity and the gate.

Through above-mentioned technical scheme, avoid the second blade to cut the surface of first blade cutting repeatedly, cause the life-span of second blade to shorten.

Preferably, the central axis of the ejector rod and the central axis of the connecting rod form an included angle of 45 degrees, and the connecting rod is in wedge-shaped connection with the ejector rod.

Through above-mentioned technical scheme for the connected mode of ejector pin and connecting rod is simple reliable, guarantees simultaneously that the slip of ejector pin is smooth and easy.

Preferably, the movable mould is provided with a crochet hook corresponding to the surface protrusions of the first sub-runner and the second sub-runner, and the diameter of the crochet hook is gradually reduced from top to bottom.

Through the technical scheme, the crochet hook guarantees that the waste materials in the main runner, the first sub runner, the second sub runner and the pouring gate are separated when the mold is separated, and the phenomenon that the waste materials cannot be separated from the runner and the pouring gate smoothly after being separated from the product is avoided.

The technical scheme has the following technical effects:

1. the sprue is arranged in the fixed die, when the movable die moves, the product and the waste material at the sprue are separated through the first cutting edge, and the connection of the waste material and the product is automatically sheared by utilizing the parting force of the die during the movement, so that the situation that the material handle and the product cannot be automatically separated due to the fact that the current parting channel is arranged on the splicing surface of the movable die and the fixed die is avoided, and the situation that the material handle and the product are separated manually or by a machine is needed, and the production rate of the product is improved while the manpower and financial resources are saved.

2. The gate knife, the connecting rod, the ejector rod and the elastic piece are matched, so that the second cutting edge cuts the junction of the gate and the product cavity from the top to the bottom, and the first cutting edge and the second cutting edge do relative motion, so that the cutting time of the first cutting edge is shortened, and the service life of the first cutting edge is prolonged.

3. The sliding distance of the knife switch is controlled so as to avoid the second cutting edge to repeatedly cut the surface cut by the first cutting edge, thereby prolonging the service life of the second cutting edge.

Drawings

FIG. 1 is a schematic view of the structure of a corner protector of a product;

FIG. 2 is a schematic diagram of an embodiment;

FIG. 3 is a schematic structural view of a stationary mold;

FIG. 4 is a cross-sectional view of an embodiment;

fig. 5 is an enlarged view of a portion a of fig. 4;

FIG. 6 is a partial cutaway isometric view of an embodiment;

fig. 7 is an enlarged view of a portion B of fig. 6.

Reference numerals: 1. curb Dan Hujiao; 2. a first protective surface; 3. a second protective surface; 4. a third protective surface; 5. a movable mold; 6. a fixed mold; 7. an ejector device; 8. a main flow passage; 9. a first sub-flow path; 10. a second shunt; 11. a product cavity; 12. a crochet hook; 13. a gate; 14. a first cutting edge; 15. a knife switch; 16. a second cutting edge; 17. a spring; 18. a connecting rod; 19. and (5) a push rod.

Detailed Description

The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.

As shown in fig. 2, the present embodiment provides a die for producing a curb stone corner protector 1 shown in fig. 1, wherein the corner protector comprises a first protection surface 2, a second protection surface 3 and a third protection surface 4, adjacent protection surfaces are mutually perpendicular, and bottoms of the second protection surface 3 and the third protection surface 4 are inclined.

As shown in fig. 2 to 7, the die of the curb Dan Hujiao comprises a movable die 5, a fixed die 6 and an ejector 7, wherein a main runner 8 is arranged in the fixed die 6, the movable die 5 and the fixed die 6 are clamped to form a first sub runner 9, a second sub runner 10 and a plurality of product cavities 11, the main runner 8 is communicated with the first sub runner 9, the second sub runner 10 is communicated with the first sub runner 9, and the product cavities 11 are symmetrical front and back relative to the first sub runner 9 or are symmetrical left and right relative to the second sub runner 10. The movable mould 5 is provided with a crochet hook 12 corresponding to the surface protrusions of the first sub-runner 9 and the second sub-runner 10, and the diameter of the crochet hook 12 is gradually reduced from top to bottom. A gate 13 is arranged in the fixed die 6, the gate 13 is communicated with the second runner 10 and the top of the side wall of the product cavity 11, the central axis of the gate 13 forms an included angle of 40-45 degrees with the central axis of the runner, the section of the connecting end of the gate 13 and the second runner 10 is larger than the section of the connecting end of the gate 13 and the product cavity 11, and the lower part of the connecting part of the product cavity 11 and the gate 13 is used as a first cutting edge 14.

The top of the junction of the product cavity 11 and the gate 13 is provided with a knife 15, the junction of the knife 15 and the gate 13 is used as a second cutting edge 16, and the top of the knife 15 is fixedly connected with an elastic piece-a spring 17'. The knife 15 which is bilaterally symmetrical is fixed through a connecting rod 18, the bottom of the connecting rod 18 is obliquely connected with a push rod 19, the central axis of the push rod 19 and the central axis of the connecting rod 18 form an included angle of 45 degrees, and the connecting rod 18 is in wedge-shaped connection with the push rod 19. The end of the ejector rod 19 extends to the contact surface of the fixed die 6 and the movable die 5, and when the die is opened, the ejector rod 19 protrudes out of the fixed die 6. And the knife 15, the ejector rod 19 and the connecting rod 18 are all arranged in the fixed die 6 in a sliding way, and the sliding distance of the knife 15 to the bottom is half of the width of the joint of the product cavity 11 and the pouring gate 13.

Specific embodiment of a die for curb Dan Hujiao: when the injection molding machine moves the movable mold 5, the product and the waste material are away from the fixed mold 6 along with the movable mold 5, the spring 17 releases the elastic force to push the knife 15 to be close to the gate 13 while being away from the fixed mold 6, the second cutting edge 16 is cut off from top to bottom, and the first cutting edge 14 is cut off from bottom to top. The knife 15 moves and drives the connecting rod 18 to slide, and the connecting rod 18 slides and simultaneously makes the ejector rod 19 slide in an inclined way, so that the ejector rod 19 protrudes out of the contact surface of the fixed die 6 and the movable die 5. The joint of the waste material and the product is automatically sheared through the cooperation of the first cutting edge 14 and the second cutting edge 16, so that the situation that the material handle and the product cannot be automatically separated and are separated manually or by a machine due to the fact that the current shunt is arranged on the splicing surface of the movable die 5 and the fixed die 6 is avoided. The product and the waste are simultaneously ejected by the ejection device 7, and the separation of the product, the waste and the die is completed. When the fixed die 6 and the movable die 5 are closed, the movable die 5 pushes the ejector rod 19 back, the ejector rod 19 drives the connecting rod 18 and the knife switch 15 to return to the original position, and the spring 17 is compressed again to wait for the next separation to push the knife switch 15.

Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.

Claims

1. The utility model provides a curb Dan Hujiao mould, includes movable mould (5), cover half (6) and ejecting device (7), be provided with sprue (8) in cover half (6), first subchannel (9), second subchannel (10), a plurality of product die cavity (11) that movable mould (5), cover half (6) compound die formed, sprue (8) intercommunication first subchannel (9), second subchannel (10) intercommunication first subchannel (9), characterized by: a gate (13) is arranged in the fixed die (6), the gate (13) is communicated with the second sub-runner (10) and the top of the side wall of the product cavity (11), the central axis of the gate (13) and the central axis of the sub-runner form an included angle of 40-45 degrees, and the lower part of the joint of the product cavity (11) and the gate (13) is used as a first cutting edge (14).

2. A die for curb Dan Hujiao according to claim 1, wherein: the cross section of the connecting end of the gate (13) and the second sub-runner (10) is larger than that of the connecting end of the gate and the product cavity (11).

3. A die for curb Dan Hujiao according to claim 2, wherein: the product cavities (11) are symmetrical to the first sub-runner (9) in front-back or symmetrical to the second sub-runner (10) in left-right.

4. A die for curb Dan Hujiao according to claim 3, wherein: the top of product die cavity (11) with runner (13) junction is equipped with plug blade (15), plug blade (15) with the junction of runner (13) is used as second blade (16), the top fixedly connected with elastic component of plug blade (15), bilateral symmetry plug blade (15) are fixed through connecting rod (18), the bottom slope of connecting rod (18) is connected with ejector pin (19), ejector pin (19) extend to cover half (6) with the contact surface of movable mould (5), just plug blade (15), ejector pin (19), connecting rod (18) all slide and locate in cover half (6), when the mould die sinking, ejector pin (19) protrusion in cover half (6).

5. The die of the curb Dan Hujiao as claimed in claim 4, wherein: the sliding distance of the knife gate (15) to the bottom is half of the width of the joint of the product cavity (11) and the pouring gate (13).

6. The die of the curb Dan Hujiao as claimed in claim 4, wherein: the central axis of the ejector rod (19) and the central axis of the connecting rod (18) form an included angle of 45 degrees, and the connecting rod (18) is in wedge-shaped connection with the ejector rod (19).

7. A die for curb Dan Hujiao according to claim 1, wherein: the movable mould (5) is provided with a crochet hook (12) in a protruding manner corresponding to the surfaces of the first sub-runner (9) and the second sub-runner (10), and the diameter of the crochet hook (12) is gradually reduced from top to bottom.