Three-channel feeding structure for injection mold frame

Abstract

The utility model discloses a three-channel feeding structure for an injection mold frame, which is characterized in that three pouring positioning holes are formed in the upper surface of an upper mold base, three positioning bulges are arranged on the lower surface of a feeding block to correspond to the pouring positioning holes one by one, and two side runners are formed in the feeding block to be communicated with feeding channels on the two sides; meanwhile, the sprue is directly communicated with the middle feeding channel, so that simultaneous feeding of the three channels is realized, an inner cavity of a mold core can be quickly filled, the injection molding efficiency is greatly improved, the feeding block is matched with the pouring positioning hole through the positioning bulge, the stability is greatly improved, and meanwhile, the feeding block is of a detachable structure, so that the production cost is greatly reduced. Therefore, the feeding block is convenient to disassemble, clean or replace, and the flexibility is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mold base feeding, in particular to a three-channel feeding structure for an injection mold base. Background Technique

[0002] The mold base is the support of the mold. For example, the part on the die-casting machine that combines and fixes each part of the mold according to certain rules and positions and enables the mold to be installed on the die-casting machine for work is called the mold base, which is composed of a pushing mechanism, a guiding mechanism, a pre-resetting mechanism, mold feet pads, and a seat plate. The injection mold base is generally used in conjunction with an injection molding machine.

[0003] At present, a single-channel feeding structure is generally adopted for injection into the inner cavity of a mold core in an injection mold base, resulting in difficult rapid filling of the material into the inner cavity of the mold core during the injection process, and the efficiency is affected. Therefore, an improved technology is urgently needed to solve this problem existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a three-channel feeding structure for an injection mold base, which can realize simultaneous feeding of three channels, and thus can quickly fill the inner cavity of the mold core, greatly improving the injection efficiency. Moreover, the feeding block is matched with the pouring positioning hole through the positioning protrusion, and the stability is greatly improved, so as to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A three-channel feeding structure for an injection mold base, including a mold base main body and a feeding mechanism;

[0006] The mold base main body includes an upper mold base and a lower mold base. The upper mold base is provided with a plurality of guide rods, and the lower mold base is provided with a plurality of guide sleeves. The upper mold base and the lower mold base are slidably matched through the guide rods and the guide sleeves. A upper mold core installation groove is opened on the lower surface of the upper mold base, a lower mold core installation groove is opened on the upper surface of the lower mold base, and three pouring positioning holes are opened on the upper surface of the upper mold base. The pouring positioning holes are internally communicated with the upper mold core installation groove;

[0007] The feeding mechanism includes a feeding block and a positioning protrusion. Three positioning protrusions are arranged on the lower surface of the feeding block, and feeding channels are opened inside the positioning protrusions. The positioning protrusions on the lower surface of the feeding block correspond to the pouring positioning holes one by one and are inserted into each other. The feeding block is connected to the upper surface of the upper mold base through bolts. A nozzle is arranged at the middle position on the upper surface of the feeding block. Side flow channels are opened inside the feeding block and on both sides of the nozzle. The side flow channels are communicated with the feeding channels on both sides. The feeding channel opened in the positioning protrusion at the middle position is communicated with the nozzle.

[0008] Preferably, a three-channel feeding structure for an injection mold base provided by the present utility model, wherein a groove is provided in the pouring positioning hole, and screw holes are uniformly provided at the groove of the pouring positioning hole.

[0009] Preferably, a three-channel feeding structure for an injection mold base provided by the present utility model, wherein a boss is provided on the periphery of the positioning protrusion, the boss is connected in a matching manner with the groove of the pouring positioning hole, a connecting hole is provided through the feeding block at the boss, and the connecting hole corresponds to the screw hole at the groove one by one and is connected by bolts.

[0010] Preferably, a three-channel feeding structure for an injection mold base provided by the present utility model, wherein a counterbore is provided at the outer end of the connecting hole of the feeding block.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] Three pouring positioning holes are provided on the upper surface of the upper mold base, three positioning protrusions are provided on the lower surface of the feeding block to correspond to the pouring positioning holes one by one, and two side flow channels are provided inside the feeding block to communicate with the feeding channels on both sides. At the same time, the nozzle is directly communicated with the middle feeding channel, so as to realize simultaneous feeding of three channels, and then quickly fill the inner cavity of the mold core, greatly improving the injection efficiency. The feeding block is matched with the pouring positioning hole through the positioning protrusion, greatly improving the stability, and the feeding block 8 is arranged through the nozzle 11 without affecting the connection with the traditional injection molding machine. At the same time, since the feeding block is a detachable structure, it is convenient to disassemble, clean or replace the feeding block, greatly improving the flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present utility model;

[0014] Figure 2 is a structural schematic diagram of the feeding mechanism;

[0015] Figure 3 is a cross-sectional structural schematic diagram of the feeding mechanism;

[0016] Figure 4 is an Figure 2 angle transformation structural schematic diagram of the attachment;

[0017] Figure 5 is a structural schematic diagram of the upper mold base;

[0018] Figure 6 is an Figure 5 angle transformation structural schematic diagram of the attachment;

[0019] Figure 7 is a structural schematic diagram of the lower mold base.

[0020] In the figure: upper die holder 1, lower die holder 2, guide rod 3, guide bush 4, upper die insert mounting groove 5, lower die insert mounting groove 6, casting positioning hole 7, feeding block 8, positioning projection 9, feeding channel 10, nozzle 11, side runner 12, groove 13, screw hole 14, boss 15, connection hole 16, counterbore 17. Detailed implementation mode

[0021] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0022] It should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "both sides", "one end", "the other end", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] Please refer to Figures 1-7 , the present invention provides a technical solution: a three-channel feeding structure for an injection mold base, including a mold base main body and a feeding mechanism;

[0024] The mold base main body includes an upper die holder 1 and a lower die holder 2. The upper die holder 1 is provided with a plurality of guide rods 3, and the lower die holder 2 is provided with a plurality of guide bushes 4. The upper die holder 1 and the lower die holder 2 are slidably matched through the guide rods 3 and the guide bushes 4. The lower surface of the upper die holder 1 is provided with an upper die insert mounting groove 5 for mounting an upper die insert, and the upper surface of the lower die holder 2 is provided with a lower die insert mounting groove 6 for mounting a lower die insert. The upper surface of the upper die holder 1 is provided with three casting positioning holes 7, and the casting positioning holes 7 communicate with the inside of the upper die insert mounting groove 5. The upper die insert is also provided with three feeding holes corresponding to and communicating with the casting positioning holes 7, so as to realize feeding.

[0025] The feeding mechanism includes a feeding block 8 and positioning protrusions 9. There are three positioning protrusions 9 on the lower surface of the feeding block 8. Feeding channels 10 are provided inside each of the positioning protrusions 9. The positioning protrusions 9 on the lower surface of the feeding block 8 correspond to and are inserted into the pouring positioning holes 7 one by one. The feeding block 8 is connected to the upper surface of the upper die base 1 by bolts. A nozzle 11 is provided at the middle position of the upper surface of the feeding block 8. Side channels 12 are provided inside the feeding block 8 and on both sides of the nozzle 11. The side channels 12 communicate with the feeding channels 10 on both sides. The feeding channel 10 provided in the positioning protrusion 9 at the middle position communicates with the nozzle 11. A groove 13 is provided in the pouring positioning hole 7, and screw holes 14 are evenly provided in the pouring positioning hole 7 at the groove 13. A boss 15 is provided on the periphery of the positioning protrusion 9. The boss 15 is connected to the groove 13 of the pouring positioning hole 7 in a matching manner to ensure the stability after the connection of the positioning protrusion 9 and the pouring positioning hole 7. The feeding block 8 is provided with through connection holes 16 at the boss 15. The connection holes 16 correspond to the screw holes 14 at the groove 13 one by one and are connected by bolts. The bolts pass through the connection holes 16 and are threadedly connected to the screw holes 14, thereby realizing the connection between the feeding block 8 and the upper die base 1. A counterbore 17 is provided at the outer end of the connection hole 16 of the feeding block 8 to hide the head of the bolt and avoid affecting the installation.

[0026] Usage method and principle: First, assemble the upper die base 1 and the lower die base 2, and make the upper die base 1 and the lower die base 2 slide and cooperate through the guide rod 3 and the guide sleeve 4. The positioning protrusions 9 of the feeding block 8 correspond to and are inserted into the pouring positioning holes 7 opened on the upper die base 1 one by one. Subsequently, bolts are passed through the counterbores 17 and connection holes 16 of the feeding block 8 and are threadedly connected to the screw holes 14 at the groove 13 of the pouring positioning hole 7, thereby realizing the firm connection between the feeding block 8 and the upper die base 1. During use, the pouring nozzle is connected to the nozzle 11 of the feeding block 8. When squeezing and feeding, the material enters the two side channels 12 and the feeding channel 10 at the middle position through the nozzle 11, and then enters the other two feeding channels through the two side channels 12, thereby realizing three-channel feeding. The mold core is also provided with three feeding holes to realize three-channel simultaneous feeding. The structure of the present utility model is reasonable. There are three pouring positioning holes 7 on the upper surface of the upper die base 1, and three positioning protrusions 9 are provided on the lower surface of the feeding block 8 to correspond to the pouring positioning holes 7 one by one. Two side channels 12 are provided inside the feeding block 8 to communicate with the feeding channels 10 on both sides. At the same time, the nozzle 11 directly communicates with one feeding channel 10 in the middle, thereby realizing three-channel simultaneous feeding, and then the inner cavity of the mold core can be quickly filled, and the injection molding efficiency is greatly improved. The feeding block 8 is matched with the pouring positioning hole 7 through the positioning protrusion 9, and the stability is greatly improved. And the feeding block 8 is provided with a nozzle 11, which does not affect the connection with the traditional injection molding machine. At the same time, since the feeding block 8 is a detachable structure, it is convenient to disassemble, clean or replace the feeding block 8, and the flexibility is greatly improved.

[0027] Where the present utility model is not described in detail, it is the well-known technology of those skilled in the art.

[0028] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and all of them should be covered within the scope of the claims of the present utility model.

Claims

1. A three-channel feeding structure for an injection mold base, characterized in that: It includes a die set body and a feeding mechanism; The die set body includes an upper die base (1) and a lower die base (2). The upper die base (1) is provided with a plurality of guide rods (3), and the lower die base (2) is provided with a plurality of guide sleeves (4). The upper die base (1) and the lower die base (2) are slidably matched through the guide rods (3) and the guide sleeves (4). An upper die insert mounting groove (5) is formed on the lower surface of the upper die base (1), and a lower die insert mounting groove (6) is formed on the upper surface of the lower die base (2). Three pouring positioning holes (7) are formed on the upper surface of the upper die base (1), and the pouring positioning holes (7) are internally communicated with the upper die insert mounting groove (5); The feeding mechanism includes a feeding block (8) and positioning protrusions (9). Three positioning protrusions (9) are arranged on the lower surface of the feeding block (8). Feeding channels (10) are formed inside the positioning protrusions (9). The positioning protrusions (9) on the lower surface of the feeding block (8) correspond to the pouring positioning holes (7) one by one and are inserted into each other. The feeding block (8) is connected to the upper surface of the upper die base (1) by bolts. A nozzle (11) is arranged at the middle position of the upper surface of the feeding block (8). Side flow channels (12) are formed inside the feeding block (8) and on both sides of the nozzle (11). The side flow channels (12) are communicated with the feeding channels (10) on both sides. The feeding channel (10) formed in the positioning protrusion (9) at the middle position is communicated with the nozzle (11).

2. The three-channel feeding structure for an injection mold base according to claim 1, wherein: A groove (13) is formed in the pouring positioning hole (7), and screw holes (14) are uniformly formed in the pouring positioning hole (7) at the groove (13).

3. The three-channel feeding structure for an injection mold base according to claim 1, characterized in that: A boss (15) is arranged on the periphery of the positioning protrusion (9). The boss (15) is connected to the groove (13) of the pouring positioning hole (7) in a matching manner. A connecting hole (16) is formed through the feeding block (8) at the boss (15). The connecting holes (16) correspond to the screw holes (14) at the groove (13) one by one and are connected by bolts.

4. A three-channel feeding structure for an injection mold base according to claim 1, characterized in that: A counterbore (17) is arranged at the outer end of the connecting hole (16) of the feeding block (8).

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