Multi-station efficient demolding injection mold

Abstract

The utility model discloses a multi-station efficient demolding injection mold, which relates to the technical field of molds, and comprises an upper mold and a lower mold which are butted with each other, a glue feeding mechanism arranged on the upper mold and an ejection mechanism arranged on the lower mold, and the upper mold and the lower mold are butted with each other to form a plurality of mold cavities for molding products. The plurality of mold cavities are arranged in an annular array; an assembling groove corresponding to the mold cavity is formed along the parting surface of the lower mold, a fixed insert is fixedly arranged in the assembling groove, a first movable insert and a second movable insert are slidably connected in the assembling groove, and the first movable insert and the second movable insert are symmetrically arranged on the two sides of the fixed insert; the fixed insert, the first movable insert and the second movable insert are in butt joint with one another to form a profiling groove used for forming product characteristics. According to the injection mold, the first movable insert and the second movable insert can be synchronously separated from a product, the product can be ejected out, and the high demolding efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an injection mold with multi-station high-efficiency demoulding. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the surface processing of objects by changing the physical state of the molded material, and is known as the "mother of industry". Injection molds are tools for producing plastic products. Generally, injection molds are composed of an upper mold and a lower mold. During injection molding, the upper mold and the lower mold are closed to form a runner system and a mold cavity for plastic products. During injection molding, the mold is clamped on the injection molding machine, and the molten plastic is injected into the mold cavity and cooled and formed in the mold cavity. At the same time, the molten plastic is also cooled in the runner system to form a runner system condensate. After the plastic product is formed, the upper mold and the lower mold are separated, and the plastic product is ejected from the mold cavity through the ejection system and leaves the mold. Finally, the upper mold and the lower mold are closed again for the next injection molding. The entire injection molding process is carried out in a cycle.

[0003] like Figure 1 As shown, a plastic product has a convex column structure at the lower end of one side of the product. According to customer needs, a groove is formed along the circumferential side of the convex column structure. In the prior art, the above problem is generally solved by side core pulling of a slide. Specifically, two slides are connected to surround / cover the convex column structure and form the groove. However, the side core pulling of the slide occupies a large space and cannot meet the original multi-station production requirements of the product.

[0004] Therefore, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0006] A multi-station efficient demoulding injection mold, comprising an upper mold and a lower mold that are butt-jointed with each other, a glue feeding mechanism disposed on the upper mold, and an ejection mechanism disposed on the lower mold, wherein the upper mold and the lower mold are butt-jointed with each other to form a plurality of mold cavities for molding products, and the plurality of mold cavities are arranged in a ring array;

[0007] An assembly groove corresponding to the mold cavity is provided along the parting surface of the lower mold, a fixed insert is fixed in the assembly groove, and a first movable insert and a second movable insert are slidably connected, the first movable insert and the second movable insert are symmetrically arranged on both sides of the fixed insert, and the fixed insert, the first movable insert and the second movable insert are butted against each other to form a contour groove for molding product features;

[0008] The first movable insert and the second movable insert are respectively matched with the fixed insert and the assembly groove in an inclined surface, and the ejection mechanism includes a first ejector pin connected to the first movable insert and the second movable insert respectively, so as to drive the first movable insert and the second movable insert to expand outward or retract and slide on the fixed insert through the corresponding first ejector pin, wherein the inner side of the fixed insert and the inner side of the assembly groove are both provided with a first clearance groove corresponding to the first ejector pin;

[0009] The glue feeding mechanism includes a main flow channel arranged on the upper mold and multiple branch flow channels arranged on the parting surface of the upper mold and / or the lower mold, the multiple branch flow channels correspond to the multiple mold cavities one by one, and the multiple branch flow channels are all connected to the main flow channel, wherein the ejection mechanism also includes a second ejector pin corresponding to the branch flow channel.

[0010] As a further solution of the utility model: the first movable insert and the second movable insert both include a docking portion and a connected inclined portion, a second clearance groove corresponding to the docking portion is opened in the middle position of the fixed insert, a product profiling block is protruded on the inner side of the docking portion, and the two product profiling blocks are docked with each other to form the profiling groove.

[0011] As a further solution of the utility model: the two sides of the fixed insert are respectively provided with docking grooves corresponding to the first movable insert and the second movable insert, and the second yielding groove is communicated with the docking grooves on both sides thereof;

[0012] Wherein, the inner wall of the docking groove is tilted inwardly to match the inclined surface of the inclined portion, and the inner wall of the docking groove is provided with the first yielding groove.

[0013] As a further solution of the utility model: a T-shaped slide groove is provided at the lower end of the inclined portion, and the first ejector pin is slidably matched with the T-shaped slide groove.

[0014] As a further solution of the utility model: the first ejector pin is provided with a T-shaped connecting end which can be slidably engaged in the T-shaped slide groove, and the length of the T-shaped connecting end is smaller than the depth of the T-shaped slide groove.

[0015] As a further solution of the utility model: when the product is formed, the main flow channel and the plurality of branch flow channels form an integrated flow channel waste.

[0016] As a further solution of the utility model: the first ejector pin and the second ejector pin are both straight ejectors.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] With the synchronous movement of the first ejector pin and the second ejector pin, the first ejector pin can drive the first movable insert and the second movable insert to expand outward along the inclined surface and separate from the fixed insert, and the second ejector pin can drive multiple products to be ejected together through the runner waste. During the ejection process, the first movable insert and the second movable insert are gradually separated from the product and finally separated from the product. Therefore, the injection mold can synchronously complete the separation of the first movable insert, the second movable insert and the product, and complete the ejection of the product, thereby achieving efficient demolding efficiency. At the same time, multiple products can be integrated through the runner waste, which is convenient for centralized dewatering port processing.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the product structure;

[0022] Figure 2 It is a structural schematic diagram of the lower mold in the utility model;

[0023] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4 It is a schematic diagram of the structure of the fixed insert, the first movable insert and the second movable insert in the utility model;

[0025] Figure 5 It is a schematic diagram of the exploded structure of the fixed insert, the first movable insert and the second movable insert in the utility model;

[0026] Figure 6 It is a schematic diagram of the structure of the first movable insert / the second movable insert cooperating with the first ejector pin in the utility model;

[0027] Figure 7It is a schematic diagram of the cross-sectional structure of the utility model;

[0028] Figure 8 yes Figure 7 Schematic diagram of the enlarged structure at point B in the middle.

[0029] The reference numerals and names in the figures are as follows:

[0030] 1. Upper mold; 2. Lower mold; 3. Mold cavity; 4. Assembly groove; 5. Fixed insert; 6. First movable insert; 7. Second movable insert; 8. Profiling groove; 9. First ejector pin; 10. First clearance groove; 11. Main flow channel; 12. Branch flow channel; 13. Second ejector pin; 14. Butt joint; 15. Inclined part; 16. Second clearance groove; 17. Product profiling block; 18. Butt joint groove; 19. T-shaped slide groove; 20. T-shaped connecting end. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 2-8 In an embodiment of the utility model, a multi-station efficient demoulding injection mold includes an upper mold 1 and a lower mold 2 that are connected to each other, a glue feeding mechanism arranged on the upper mold 1, and an ejection mechanism arranged on the lower mold 2. The upper mold 1 and the lower mold 2 are connected to each other to form a plurality of mold cavities 3 for molding products, and the plurality of mold cavities 3 are arranged in a ring array;

[0033] An assembly groove 4 corresponding to the mold cavity 3 is provided along the parting surface of the lower mold 2, and a fixed insert 5 is fixedly provided in the assembly groove 4, and a first movable insert 6 and a second movable insert 7 are slidably connected, and the first movable insert 6 and the second movable insert 7 are symmetrically arranged on both sides of the fixed insert 5, and the fixed insert 5, the first movable insert 6 and the second movable insert 7 are butted against each other to form a contour groove 8 for molding product features;

[0034] The first movable insert 6 and the second movable insert 7 are respectively matched with the fixed insert 5 and the assembly groove 4 in an inclined surface, and the ejection mechanism includes a first ejector pin 9 connected to the first movable insert 6 and the second movable insert 7 respectively, so as to drive the first movable insert 6 and the second movable insert 7 to expand outward or retract and slide on the fixed insert 5 through the corresponding first ejector pin 9, wherein the inner side of the fixed insert 5 and the inner side of the assembly groove 4 are both provided with a first clearance groove 10 corresponding to the first ejector pin 9;

[0035] The glue feeding mechanism includes a main channel 11 arranged on the upper mold 1 and multiple branch channels 12 arranged on the parting surface of the upper mold 1 and / or the lower mold 2, the multiple branch channels 12 correspond one-to-one to the multiple mold cavities 3, and the multiple branch channels 12 are all connected to the main channel 11, wherein the ejection mechanism also includes a second ejector pin 13 corresponding to the branch channel 12.

[0036] In the technical solution of the utility model, an assembly groove 4 corresponding to the position of the mold cavity 3 is provided along the parting surface of the lower mold 2, and a fixed insert 5 and a first movable insert 6 and a second movable insert 7 symmetrically arranged on both sides of the fixed insert 5 are built in the assembly groove 4. The fixed insert 5, the first movable insert 6 and the second movable insert 7 can be butted with each other to form a contour groove 8 (i.e., a convex column structure of the product and a groove position thereon) for forming product features. The first movable insert 6 and the second movable insert 7 are respectively matched with the fixed insert 5 and the assembly groove 4 in an inclined surface, and combined with the first ejector pin 9 correspondingly connected to the first movable insert 6 and the second movable insert 7, so that when the product is demoulded, the first ejector pin 9 can drive the first movable insert 6 and the second movable insert 7 to expand outward along the inclined surface and separate from the fixed insert 5;

[0037] On the basis of the above, a plurality of mold cavities 3 arranged in an annular array are provided, and a plurality of branch runners 12 corresponding to the plurality of mold cavities 3 are extended from the main runner 11, so that when the product is formed, the main runner 11 and the plurality of branch runners 12 form an integrated runner waste, and combined with the plurality of second ejector pins 13 corresponding to the plurality of branch runners 12, when the product is demolded, the second ejector pin 13 can drive the plurality of products to be ejected together through the runner waste, that is, along with the synchronous movement of the first ejector pin 9 and the second ejector pin 13, the first ejector pin 9 can drive the first movable insert 6 and the second movable insert 7 are separated from the fixed insert 5 along the inclined surface, and the second ejector 13 can drive multiple products to be ejected together through the runner waste. During the ejection process, the first movable insert 6 and the second movable insert 7 are gradually separated from the product and finally separated from the product. Therefore, the injection mold can synchronously complete the separation of the first movable insert 6, the second movable insert 7 and the product, and complete the ejection of the product, thereby achieving efficient demoulding efficiency. At the same time, multiple products can be integrated through the runner waste, which is convenient for centralized dewatering processing.

[0038] In the embodiment of the utility model, the first movable insert 6 and the second movable insert 7 both include a docking portion 14 and a connected inclined portion 15; a second yielding groove 16 corresponding to the docking portion 14 is provided in the middle position of the fixed insert 5; a product profiling block 17 is convexly provided on the inner side of the docking portion 14; the two product profiling blocks 17 are connected to each other to form the profiling groove 8; a T-shaped slide groove 19 is provided at the lower end of the inclined portion 15, and the first ejector pin 9 is slidably matched with the T-shaped slide groove 19.

[0039] That is, the docking portion 14 of the first movable insert 6 and the docking portion 14 of the second movable insert 7 can be docked on the second make-away groove 16 of the fixed insert 5, thereby forming a contoured groove 8 for molding product features; a first make-away groove 10 corresponding to the first ejector 9 is opened on the inner side of the assembly groove 4 and the fixed insert 5, combined with the sliding cooperation of the first ejector 9 and the T-shaped slide groove 19 at the lower end of the first movable insert 6 / the second movable insert 7, so that under the vertical ejection action of the first ejector 9, the T-shaped slide groove 19 slides relative to the first ejector 9, accompanied by the guidance of the inclined surface, so that the first movable insert 6 and the second movable insert 7 can perform outward expansion and inward contraction sliding movements relative to the fixed insert 5, so that the original lower mold 2 used to produce the product can be reused, that is, only the insert structure in the assembly groove 4 needs to be changed, and the lower mold 2 does not need to be changed, thereby greatly saving production costs.

[0040] In the embodiment of the utility model, the first ejector pin 9 is provided with a T-shaped connecting end 20 which can be slidably engaged in the T-shaped sliding groove 19 , and the length of the T-shaped connecting end 20 is smaller than the depth of the T-shaped sliding groove 19 .

[0041] Through this arrangement, the first movable insert 6 and the second movable insert 7 can be quantitatively displaced relative to the first ejector pin 9 under the cooperation of the assembly groove 4 and the inclined surface of the fixed insert 5, so that the first movable insert 6 and the second movable insert 7 can be separated relative to the product when the product is demoulded.

[0042] In the embodiment of the utility model, the two sides of the fixed insert 5 are respectively provided with docking grooves 18 corresponding to the first movable insert 6 and the second movable insert 7, and the second yielding groove 16 is connected with the docking grooves 18 on both sides thereof;

[0043] The inner wall of the docking groove 18 is tilted inwards to match the inclined surface of the inclined portion 15 , and the inner wall of the docking groove 18 is provided with the first clearance groove 10 .

[0044] In the embodiment of the utility model, the first ejector pin 9 and the second ejector pin 13 are both straight ejectors.

[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A multi-station efficient demoulding injection mold, characterized in that: It comprises an upper mold and a lower mold that are connected to each other, a glue feeding mechanism arranged on the upper mold, and an ejection mechanism arranged on the lower mold, wherein the upper mold and the lower mold are connected to each other to form a plurality of mold cavities for molding products, and the plurality of mold cavities are arranged in a ring array; An assembly groove corresponding to the mold cavity is provided along the parting surface of the lower mold, a fixed insert is fixed in the assembly groove, and a first movable insert and a second movable insert are slidably connected, the first movable insert and the second movable insert are symmetrically arranged on both sides of the fixed insert, and the fixed insert, the first movable insert and the second movable insert are butted against each other to form a contour groove for molding product features; The first movable insert and the second movable insert are respectively matched with the fixed insert and the assembly groove in an inclined surface, and the ejection mechanism includes a first ejector pin connected to the first movable insert and the second movable insert respectively, so as to drive the first movable insert and the second movable insert to expand outward or retract and slide on the fixed insert through the corresponding first ejector pin, wherein the inner side of the fixed insert and the inner side of the assembly groove are both provided with a first clearance groove corresponding to the first ejector pin; The glue feeding mechanism includes a main flow channel arranged on the upper mold and multiple branch flow channels arranged on the parting surface of the upper mold and / or the lower mold, the multiple branch flow channels correspond to the multiple mold cavities one by one, and the multiple branch flow channels are all connected to the main flow channel, wherein the ejection mechanism also includes a second ejector pin corresponding to the branch flow channel.

2. The multi-station efficient demoulding injection mold according to claim 1, characterized in that: The first movable insert and the second movable insert both include a docking portion and a connected inclined portion. A second clearance groove corresponding to the docking portion is opened in the middle position of the fixed insert. A product profiling block is protruded on the inner side of the docking portion. The two product profiling blocks are connected to each other to form the profiling groove.

3. The multi-station efficient demoulding injection mold according to claim 2, characterized in that: The two sides of the fixed insert are respectively provided with docking grooves corresponding to the first movable insert and the second movable insert, and the second yielding groove is communicated with the docking grooves on both sides thereof; Wherein, the inner wall of the docking groove is tilted inwardly to match the inclined surface of the inclined portion, and the inner wall of the docking groove is provided with the first yielding groove.

4. The multi-station efficient demoulding injection mold according to claim 2, characterized in that: A T-shaped slide groove is provided at the lower end of the inclined portion, and the first ejector pin is slidably matched with the T-shaped slide groove.

5. The multi-station efficient demoulding injection mold according to claim 4, characterized in that: The first ejector pin is provided with a T-shaped connecting end which can be slidably engaged in the T-shaped sliding groove, and the length of the T-shaped connecting end is smaller than the depth of the T-shaped sliding groove.

6. The multi-station efficient demoulding injection mold according to claim 1, characterized in that: When the product is formed, the main flow channel and the plurality of branch flow channels form an integrated flow channel waste.

7. A multi-station efficient demoulding injection mold according to any one of claims 1 to 6, characterized in that: The first ejector pin and the second ejector pin are both straight ejector pins.

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