High-density 360-degree waterfall type distribution multi-cavity injection mold

Abstract

The application relates to the technical field of injection molds, and discloses a high-density 360-degree waterfall-type distributed multi-cavity injection mold, which solves the problems of the traditional mold plane layout mode, the production of super multi-cavity number of small products, the large mold size, and the cost increase, and comprises a back code mold plate, the lower end of the back code mold plate is embedded with a driving assembly, the upper end of the back code mold plate is installed with a back mold base plate, the inside of the back mold base plate is embedded with a core barrel, the lower part of the core barrel is embedded with a T-shaped guide sleeve, the inside of the T-shaped guide sleeve is movably provided with a reciprocating tower-shaped lateral ejection rod, the application changes the parallel demolding direction ejection structure of the traditional injection mold ejector plate, adopts the tower-shaped lateral ejection rod structure of the annular arrangement type cavity reciprocation, the product layout changes the traditional plane arrangement mode, meanwhile, the product is arranged in three dimensions, so that the mold space of the three-dimensional space of the length, width and height of the injection molding machine is maximally utilized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of injection molds, and particularly relates to a high-density 360-degree cascading multi-cavity injection mold. BACKGROUND

[0002] With the rapid development of the injection molding industry, the requirement for the efficiency of injection molding production is higher and higher, especially the mold requirement for small products with low surface quality and low added value has changed from the production efficiency of one mold with 4 cavities, 8 cavities or 24 cavities to one mold with 144 cavities or even more cavities. However, with the increase of the number of mold cavities, the length and width of the mold are also increasing, thereby causing the injection molding machine model to increase, which requires the part production factory to invest in larger equipment to produce small products, thereby increasing the production cost of small parts and raising the production investment of small products, which is often not suitable for small production factories.

[0003] However, the cost of the hot runner and the synchronous structure of the laminated mold is too high and the production and maintenance are difficult, which is not suitable for small injection molding factories, so it is necessary to change the traditional injection mold design method and seek a kind of injection mold which can improve the traditional cavity planar arrangement to three-dimensional arrangement to reduce the length and width of the mold, while controlling the thickness and cost of the mold. Therefore, the high-density 360-degree cascading multi-cavity injection mold is designed. SUMMARY

[0004] In view of the above problems, the high-density 360-degree cascading multi-cavity injection mold is provided to overcome the defects of the prior art, which effectively solves the problems of the traditional mold planar layout method, the large mold size and the cost increase for producing micro small products with super multi-cavities.

[0005] To achieve the above object, the application provides the following technical scheme: a high-density 360-degree cascading multi-cavity injection mold, comprising a rear mold plate, a driving assembly is embedded at the lower end of the rear mold plate, a rear mold base plate is installed at the upper end of the rear mold plate, a core barrel is embedded in the interior of the rear mold base plate, a T-shaped guide sleeve is embedded at the lower part of the core barrel, a movable tower-shaped lateral ejection rod is movably arranged in the interior of the T-shaped guide sleeve, a sliding groove is formed at the lower part of the tower-shaped lateral ejection rod, the sliding groove is movably matched with the driving assembly, the lower end of the T-shaped guide sleeve is in contact with one side of the upper end of the driving assembly, a plurality of ejection units are circumferentially arranged at the outer end of the core barrel, a plurality of elastic block assemblies are connected to the exterior of the ejection units, a front mold sleeve plate is sleeved on the exterior of the elastic block assemblies, a front mold base plate is connected to the upper end of the front mold sleeve plate, a front mold plate is connected to the upper end of the front mold base plate, and a pouring assembly is embedded at the middle of the lower end of the front mold plate.

[0006] Preferably, the ejection unit comprises an elastic pin movably embedded in the interior of the core barrel, a first spring is sleeved on one side of the exterior of the elastic pin, one end of the first spring is connected with the elastic pin, and the other end of the first spring is connected with the inner side wall of the core barrel.

[0007] Preferably, the elastic block assembly comprises an elastic block, a sliding slot is arranged on one side of the elastic block, a sliding strip is movably connected in the sliding slot, the sliding strip is connected with the front mold sleeve plate through bolts, a spring slot is arranged on the upper end of the elastic block, a spring guide rod is embedded in the spring slot, a second spring is sleeved on the outer part of the spring guide rod, the second spring is located in the spring slot, a first pull hook block is connected with the lower end of the elastic block through screws, a second pull hook block is arranged on one side of the first pull hook block, and the second pull hook block is connected with the rear mold base plate through screws.

[0008] Preferably, the elastic block is provided with an elastic pin pressing plate on one side, the elastic pin pressing plate is connected with the outer wall of the core barrel through screws, one end of the ejection unit penetrates through the elastic pin pressing plate, and a product cavity is arranged between the elastic block and the elastic pin pressing plate.

[0009] Preferably, the cross section of the elastic block is arranged in a trapezoidal structure with the upper part being narrow and the lower part being wide, the cross section of the sliding slot is in a T-shaped structure, and the sliding strip is matched with the sliding slot.

[0010] Preferably, the pouring assembly comprises six hot runners, and the lower end of each hot runner is communicated with a cold runner, the outer sides of the cold runner are connected with branch runners at equal distances, the branch runners on the two sides are arranged in a fishbone shape, and each branch runner is communicated with a corresponding product cavity.

[0011] Preferably, the driving assembly comprises a bottom plate, a driving piece is mounted on one side of the upper end of the bottom plate, a W-shaped reciprocating driving guide rail is connected with one end of the driving piece, and the W-shaped reciprocating driving guide rail is movably matched with the tower-shaped lateral ejection rod through a sliding groove.

[0012] Preferably, the driving piece is one of a pneumatic cylinder and a hydraulic cylinder, the surface of the W-shaped reciprocating driving guide rail is in a wave shape, and the upper end surface of the W-shaped reciprocating driving guide rail is in contact with the lower end of the T-shaped guide sleeve.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] (1) The application changes the parallel demolding direction ejection structure of the traditional ejector plate of the injection mold, adopts the tower-shaped lateral ejection rod structure of the annular arrangement type cavity reciprocating movement, changes the traditional planar arrangement mode of the product layout, simultaneously, the product is arranged in a three-dimensional manner, and the three-dimensional space of the length, width and height of the injection molding machine is used to the maximum extent.

[0015] (2) The application adopts the multi-column waterfall type arrangement of the cavity and the central multi-stage tower type reciprocating ejection structure, solves the size problems of the length, width and thickness of the mold with multiple cavities in one mold, greatly reduces the tonnage of the mold clamping force of the injection molding machine, avoids the complex structure and high cost of the laminated mold, and greatly improves the production efficiency of the micro products and reduces the production cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and are intended to provide further description of the application and are not intended to limit the application.

[0017] In the drawings:

[0018] Figure 1 is a schematic view of the overall structure of the application;

[0019] Figure 2 is an exploded view of the application;

[0020] Figure 3 is a schematic view of the structure of the exploded view of the application from the top;

[0021] Figure 4 is a sectional view of the application;

[0022] Figure 5 is a schematic view of the connection structure of the pouring assembly of the application;

[0023] Figure 6 is a schematic view of the connection structure of the core barrel of the application;

[0024] Figure 7 is a schematic view of the structure of the spring block assembly of the application;

[0025] Figure 8 is an exploded view of the spring block assembly of the application;

[0026] Figure 9 is a schematic view of the structure of the pouring assembly of the application;

[0027] Figure 10 is a schematic view of the structure of the drive assembly of the application;

[0028] Figure 11 is a schematic view of the vertical arrangement of the ejection unit of the application;

[0029] Figure 12 is a schematic view of the structure of the tower-shaped lateral ejection rod of the application;

[0030] Figure 13 is a schematic view of the planar arrangement of the ejection unit of the application;

[0031] Figure 14 is a schematic view of the structure of the ejection unit of the application;

[0032] In the diagram: 1. Rear mold template; 2. Drive assembly; 201. Base plate; 202. Drive component; 203. W-shaped reciprocating drive guide rail; 3. Rear mold base plate; 4. Core cylinder; 5. T-shaped guide sleeve; 6. Tower-shaped lateral ejector rod; 7. Ejection unit; 701. Spring pin; 702. First spring; 8. Spring block assembly; 801. Spring block; 802. Slide groove; 803. Slide bar; 804. Spring groove; 805. Spring guide rod; 806. Second spring; 807. First hook block; 808. Second hook block; 809. Spring pin pressure plate; 810. Product cavity; 9. Front mold sleeve plate; 10. Front mold base plate; 11. Front mold template; 12. Casting assembly; 1201. Hot runner nozzle; 1202. Cold runner; 1203. Branch runner; 13. Sliding groove. Detailed Implementation

[0033] The technical solutions in the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without creative effort are within the scope of protection of the invention.

[0034] Example 1, by Figures 1-14 The present invention includes a rear mold template 1, a drive assembly 2 embedded at the lower end of the rear mold template 1, a rear mold base plate 3 installed at the upper end of the rear mold template 1, a core cylinder 4 embedded inside the rear mold base plate 3, a T-shaped guide sleeve 5 embedded at the lower part of the core cylinder 4, a reciprocating tower-shaped lateral ejection rod 6 movably disposed inside the T-shaped guide sleeve 5, a sliding groove 13 opened at the lower part of the tower-shaped lateral ejection rod 6, the sliding groove 13 movably cooperating with the drive assembly 2, the lower end of the T-shaped guide sleeve 5 contacting one side of the upper end of the drive assembly 2, ejection units 7 distributed circumferentially at the outer end of the core cylinder 4, a spring block assembly 8 connected to the outside of the ejection unit 7, a front mold sleeve plate 9 sleeved on the outside of the spring block assembly 8, a front mold base plate 10 connected to the upper end of the front mold base plate 9, a front mold template 11 connected to the upper end of the front mold base plate 10, and a casting assembly 12 embedded in the middle of the lower end of the front mold template 11.

[0035] In Embodiment 2, based on Embodiment 1, the ejection unit 7 includes a spring pin 701 that is movably embedded inside the core cylinder 4. A first spring 702 is sleeved on one side of the outer side of the spring pin 701. One end of the first spring 702 is connected to the spring pin 701, and the other end of the first spring 702 is connected to the inner side wall of the core cylinder 4.

[0036] In example three, on the basis of example one, the elastic block assembly 8 comprises an elastic block 801, one side of the elastic block 801 is provided with a sliding groove 802, a sliding strip 803 is movably connected in the sliding groove 802, the sliding strip 803 is connected with the front mold sleeve plate 9 through bolts, a spring groove 804 is formed in the upper end of the elastic block 801, a spring guide rod 805 is embedded in the spring groove 804, a second spring 806 is sleeved outside the spring guide rod 805, the second spring 806 is located in the spring groove 804, a first pull hook block 807 is connected with the lower end of the elastic block 801 through screws, a second pull hook block 808 is arranged on one side of the first pull hook block 807, the second pull hook block 808 is connected with the rear mold base plate 3 through screws, an elastic pin pressing plate 809 is arranged on one side of the elastic block 801, the elastic pin pressing plate 809 is connected with the outer wall of the core barrel 4 through screws, one end of the ejection unit 7 penetrates through the elastic pin pressing plate 809, a product cavity 810 is arranged between the elastic block 801 and the elastic pin pressing plate 809, the cross section of the elastic block 801 is in the shape of a trapezoid with the upper end being narrow and the lower end being wide, the cross section of the sliding groove 802 is in the shape of T, and the sliding strip 803 is matched with the sliding groove 802.

[0037] In example four, on the basis of example one, the pouring assembly 12 comprises six hot runner hot nozzles 1201, and the lower end of each of the six hot runner hot nozzles 1201 is communicated with a cold runner 1202, and the outer sides of the cold runner 1202 are connected with branch runners 1203 at equal distances, the branch runners 1203 on the two sides are arranged in the shape of a fishbone, and each branch runner 1203 is communicated with a corresponding product cavity 810.

[0038] In the application, 12 columns of products are arranged in the height direction of the device, one common runner, i.e., a cold runner 1202 is arranged between every two columns of products, branch runners 1203 are evenly arranged on the two sides of each cold runner 1202, and each branch runner 1203 corresponds to one product, preferably, the number of arrangements can be set according to the size of the machine and the size of the product.

[0039] In example five, on the basis of example one, the driving assembly 2 comprises a bottom plate 201, a driving part 202 is mounted on one side of the upper end of the bottom plate 201, one end of the driving part 202 is connected with a W-shaped reciprocating driving guide rail 203, the W-shaped reciprocating driving guide rail 203 is movably matched with the tower-shaped lateral ejection rod 6 through a sliding groove 13, the driving part 202 is one of a pneumatic cylinder and a hydraulic cylinder, the surface of the W-shaped reciprocating driving guide rail 203 is in the shape of a wave, and the upper end surface of the W-shaped reciprocating driving guide rail 203 is in contact with the lower end of the T-shaped guide sleeve 5.

[0040] The W-shaped reciprocating drive guide rail 203 is driven to move by the driving member 202 on the driving assembly 2. Since the tower-shaped lateral ejection rod 6 is in sliding fit with the W-shaped reciprocating drive guide rail 203, and the W-shaped reciprocating drive guide rail 203 is in a wave shape, when the W-shaped reciprocating drive guide rail 203 is driven to move, the tower-shaped lateral ejection rod 6 can be lifted upward under the action of the wave shape. At this time, the tower-shaped lateral ejection rod 6 moves up and down in the T-shaped guide sleeve 5, and then the tower-shaped lateral ejection rod 6 extrudes the ejection unit 7, so that the elastic needle 701 moves outward to extrude the product, facilitating the product to fall off.

[0041] The device changes the parallel demolding direction ejection structure of the traditional pin plate of the injection mold, adopts the tower-shaped lateral ejection rod structure of the annular arrangement type cavity reciprocating movement, and changes the traditional planar arrangement layout mode. Meanwhile, the product is arranged in three dimensions, so that the mold space of the three-dimensional space of the length, width and height of the injection molding machine is used to the maximum extent.

[0042] Working principle: when the mold is closed, the rear mold base plate 3 pushes the elastic block assembly 8 forward, so that the elastic block 801 is pressed into the front mold base plate 10, and the second spring 806 is compressed to generate a reaction force. Then the injection liquid is injected into the cold runner 1202 below the hot runner hot nozzle 1201 on the pouring assembly 12, and then the injection liquid is discharged into the corresponding product cavity 810 through the branch runner 1203 on both sides of each cold runner 1202, so as to form the product. After a period of time, the product is formed.

[0043] When the mold is opened, the pressure of the rear mold base plate 3 on the elastic block 801 disappears, and the elastic block 801 is ejected obliquely backward along the direction of the slide bar 803 of the T-shaped structure under the action of the second spring 806 and the first pull hook block 807, so as to demold the front part of the product. When the mold is opened, the first pull hook block 807 and the second pull hook block 808 work with each other to prevent the elastic block 801 from being stuck and sliding to damage the mold.

Claims

1. A high-density 360° waterfall-type distribution multi-cavity injection mold comprising a back mold plate (1), characterized in that: The lower end of the rear code template (1) is embedded with a driving assembly (2), the upper end of the rear code template (1) is installed with a rear die seat plate (3), the inside of the rear die seat plate (3) is embedded with a core barrel (4), the lower part of the core barrel (4) is embedded with a T-shaped guide sleeve (5), the inside of the T-shaped guide sleeve (5) is movably provided with a reciprocating tower-shaped lateral ejection rod (6), the lower part of the tower-shaped lateral ejection rod (6) is provided with a sliding groove (13), the sliding groove (13) is movably matched with the driving assembly (2), the lower end of the T-shaped guide sleeve (5) is in contact with one side of the upper end of the driving assembly (2), the outer end of the core barrel (4) is circumferentially distributed with an ejection unit (7), the outside of the ejection unit (7) is connected with a spring block assembly (8), the outside of the spring block assembly (8) is sleeved with a front die sleeve plate (9), the upper end of the front die sleeve plate (9) is connected with a front die seat plate (10), the upper end of the front die seat plate (10) is connected with a front code template (11), the middle of the lower end of the front code template (11) is embedded with a pouring assembly (12). The ejection unit (7) comprises a spring needle (701) movably embedded in the inside of the core barrel (4), the outside of one side of the spring needle (701) is sleeved with a first spring (702), one end of the first spring (702) is connected with the spring needle (701), the other end of the first spring (702) is connected with the inside side wall of the core barrel (4). The spring block assembly (8) comprises a spring block (801), one side of the spring block (801) is provided with a sliding groove (802), the inside of the sliding groove (802) is movably connected with a sliding strip (803), the sliding strip (803) is connected with the front die sleeve plate (9) through bolts, the upper end of the spring block (801) is provided with a spring groove (804), the inside of the spring groove (804) is embedded with a spring guide rod (805), the outside of the spring guide rod (805) is sleeved with a second spring (806), the second spring (806) is located in the inside of the spring groove (804), the lower end of the spring block (801) is connected with a first pull hook block (807) through screws, one side of the first pull hook block (807) is provided with a second pull hook block (808), the second pull hook block (808) is connected with the rear die seat plate (3) through screws. One side of the spring block (801) is provided with a spring needle pressing plate (809), the spring needle pressing plate (809) is connected with the outer wall of the core barrel (4) through screws, one end of the ejection unit (7) penetrates through the spring needle pressing plate (809), and a product cavity (810) is arranged between the spring block (801) and the spring needle pressing plate (809).

2. The high density 360° cascading distribution multi-cavity injection mold of claim 1, wherein: The cross section of the spring block (801) is in a trapezoidal structure which is narrow at the top and wide at the bottom, the cross section of the sliding groove (802) is in a T-shaped structure, and the sliding strip (803) is matched with the sliding groove (802).

3. The high density 360° cascading distribution multi-cavity injection mold of claim 1, wherein: The pouring assembly (12) comprises six hot runners (1201), the lower end of each of the six hot runners (1201) is communicated with a cold runner (1202), the outside of each of the cold runners (1202) is connected with branch runners (1203) at equal distances, the branch runners (1203) on the two sides are arranged in a fishbone shape, and each branch runner (1203) is communicated with a corresponding product cavity (810).

4. The high density 360° cascading distribution multi-cavity injection mold of claim 1, wherein: The driving assembly (2) comprises a bottom plate (201), one side of the upper end of the bottom plate (201) is provided with a driving piece (202), one end of the driving piece (202) is connected with a W-shaped reciprocating driving guide rail (203), and the W-shaped reciprocating driving guide rail (203) is movably connected with the tower-shaped lateral ejection rod (6) through a sliding groove (13).

5. The high density 360° cascading distribution multi-cavity injection mold of claim 4, wherein: The driving piece (202) is one of a pneumatic cylinder and a hydraulic cylinder, the surface of the W-shaped reciprocating driving guide rail (203) is in a wave shape, and the upper end surface of the W-shaped reciprocating driving guide rail (203) is in contact with the lower end of the T-shaped guide sleeve (5).

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