Injection mold capable of feeding glue in reverse direction

Abstract

The utility model discloses an injection mold capable of feeding glue reversely, which comprises a front mold, a rear mold arranged at the bottom of the front mold, and a mold nozzle connected to the top of the front mold in a penetrating manner, and the guide assembly comprises a plurality of guide rods which are fixedly connected to the top end of the rear mold in a central symmetry mode, a plurality of connecting grooves are formed in the bottom end of the front mold in a central symmetry mode, limiting sleeves are connected into the connecting grooves in a penetrating mode, and the guide rods are connected into the connecting grooves in a penetrating mode. Through the design of the connecting groove, the limiting sleeve and the mounting assembly, during use, the limiting sleeve is fixed in the connecting groove through the mounting assembly, and the guide rod penetrates into the limiting sleeve, so that the guide rod is in contact with the limiting sleeve, the guide rod is prevented from being in contact with a front mold, and the front mold is prevented from being damaged due to the protection of the limiting sleeve. And when the limiting sleeve is damaged by collision, the limiting sleeve can be directly replaced, and the situation that the whole mold needs to be replaced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with reverse glue feeding. Background Art

[0002] Injection molds are tools used for plastic injection molding and are widely used in the manufacture of various plastic products. Their working principle is to heat and melt plastic particles and inject them into the mold, which then cools to form the desired shape of the plastic product.

[0003] When in use, the front mold and the rear mold of the injection mold are first aligned. During the alignment process, a guide rod is set at the connection between the two to guide the movement direction of the two. When the equipment shakes, the guide rod directly hits the front mold or the rear mold, causing the connection between the front mold or the rear mold and the guide rod to be damaged by the impact, and the entire mold needs to be replaced. Utility Model Content

[0004] The purpose of the utility model is to provide an injection mold with reverse injection molding to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an injection mold for reverse injection molding, comprising a front mold, a rear mold provided at the bottom of the front mold, and further comprising:

[0006] A die nozzle, the die nozzle being interlaced and connected to the top of the front die;

[0007] A guide assembly, the guide assembly comprising a plurality of guide rods centrally and symmetrically fixedly connected to the top end of the rear mold, a plurality of connection grooves centrally and symmetrically opened at the bottom end of the front mold, a limiting sleeve being inserted and connected inside the connection groove, and the guide rods being inserted and connected inside the connection groove;

[0008] The mounting assembly is arranged on one side of the limiting sleeve and is used for installing and removing the limiting sleeve.

[0009] Preferably, a guide groove is provided at the bottom of the limiting sleeve, and the guide groove is used to guide the movement of the guide rod.

[0010] Preferably, an insert is inserted into the top of the rear mold, and an insert sleeve is provided on the top of the insert.

[0011] Preferably, a push plate is provided on the middle portion of the insert sleeve, and the push plate is inserted and connected to the top of the rear mold.

[0012] Preferably, the mounting assembly includes a limiting groove opened on one side of the limiting sleeve, and a limiting block is inserted and connected inside the limiting groove.

[0013] Preferably, one side of the limiting block is fixedly connected to a driving block, and one side of the driving block is fixedly connected to an elastic block.

[0014] Preferably, one side of the driving block is fixedly connected to a driving rod, the driving rod is inserted and connected to the middle part of the elastic block, and one side of the driving rod is fixedly connected to a pulling block.

[0015] Preferably, a plurality of cavities are symmetrically provided on both sides of the front mold, the driving blocks are inserted and connected inside the cavities, and the driving blocks are fixedly connected to the inner wall of one side of the cavities.

[0016] The technical effects and advantages of this utility model are:

[0017] The utility model is designed with a connecting groove, a limiting sleeve and an installation component. When in use, the limiting sleeve is fixed to the inside of the connecting groove by the installation component, and the guide rod is allowed to penetrate into the inside of the limiting sleeve, so that the guide rod is in contact with the limiting sleeve, avoiding contact between the guide rod and the front mold. With the protection of the limiting sleeve, when the limiting sleeve is damaged by impact, it can be directly replaced, avoiding the need to replace the entire mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model.

[0020] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of part A.

[0021] Figure 4 It is a partial three-dimensional structural diagram of the utility model.

[0022] In the figure: 1. Front mold; 2. Rear mold; 3. Mouth; 4. Guide assembly; 401. Limiting sleeve; 402. Connecting groove; 403. Guide rod; 404. Guide groove; 5. Mounting assembly; 501. Limiting groove; 502. Limiting block; 503. Cavity; 504. Driving block; 505. Elastic block; 506. Driving rod; 507. Pulling block; 6. Push plate; 7. Insert; 8. Insert. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] The utility model provides Figure 1-4 The reverse injection mold shown includes a front mold 1, a rear mold 2 is provided at the bottom of the front mold 1, and further includes:

[0025] The die nozzle 3 is connected to the top of the front die 1 through insertion;

[0026] The guide assembly 4 includes a plurality of guide rods 403 fixedly connected to the top of the rear mold 2 and a plurality of connecting grooves 402 symmetrically formed at the bottom of the front mold 1. The limiting sleeves 401 are inserted into the connecting grooves 402, and the guide rods 403 are inserted into the connecting grooves 402.

[0027] An installation component 5 is provided on one side of the limiting sleeve 401 and is used for installing and removing the limiting sleeve 401;

[0028] A guide groove 404 is defined at the bottom of the limiting sleeve 401 , and the guide groove 404 is used to guide the movement of the guide rod 403 .

[0029] It should be noted that the limiting sleeve 401 is adapted to the connecting groove 402, so that the limiting sleeve 401 can be inserted into the interior of the connecting groove 402, and the number of the limiting sleeves 401 is consistent with the number of the guide rods 403, so that the guide rods 403 can directly penetrate the interior of the limiting sleeve 401 when in use, without contacting the front mold 1, to avoid the situation where the guide rods 403 collide with the front mold 1 during use, causing damage to the front mold 1. The guide groove 404 is used to guide the guide rods 403 to slide toward the interior of the limiting sleeve 401; the front mold 1 and the rear mold 2 are the two core components of the injection mold. The front mold 1 and the back mold 2 are two key parts of the mold, which work together to form the final plastic product. The front mold 1 includes the front shape of the product. The front mold 1 is designed with a die mouth 3 to guide the molten plastic into the interior of the mold cavity. The back mold 2 is the movable part of the mold and is installed on the movable template of the injection molding machine. The main function of the back mold 2 is to define the internal shape of the product and the demoulding process of the molded product. The die mouth 3 is set to penetrate the interior of the cavity and can inject glue to the bottom of the product. By injecting glue in the opposite direction, the influence of the gate on the surface quality of the product is reduced.

[0030] Specifically, an insert 8 is inserted and connected to the top of the rear mold 2 , an insert sleeve 7 is sleeved on the top of the insert 8 , a push plate 6 is sleeved in the middle of the insert sleeve 7 , and the push plate 6 is inserted and connected to the top of the rear mold 2 .

[0031] It should be noted that the use of inserts 8 and sleeves 7 allows complex parts to be processed separately and then embedded in the mold body. In the injection mold, some parts have complex geometric shapes, and it is difficult to process these shapes directly on the mold body. Therefore, the design of inserts 8 and sleeves 7 can simplify the overall processing process of the mold.

[0032] Specifically, the mounting assembly 5 includes a limiting groove 501 provided on one side of the limiting sleeve 401, a limiting block 502 is inserted and connected inside the limiting groove 501, a driving block 504 is fixedly connected to one side of the limiting block 502, an elastic block 505 is fixedly connected to one side of the driving block 504, a driving rod 506 is fixedly connected to one side of the driving block 504, the driving rod 506 is inserted and connected in the middle of the elastic block 505, a pulling block 507 is fixedly connected to one side of the driving rod 506, and a plurality of cavities 503 are symmetrically provided on both sides of the front mold 1, the driving block 504 is inserted and connected inside the cavity 503, and the driving block 504 is fixedly connected to the inner wall of one side of the cavity 503.

[0033] When the limit block 502 is moved out of the limiting groove 501, the limit block 502 is adapted to fit the limit block 502, so that the limit block 502 can penetrate into the limiting groove 501 and is blocked by the limit block 502, so that the limit sleeve 401 cannot be moved out of the connecting groove 402, thereby fixing the position of the limit sleeve 401; the elastic block 505 is made of rubber, and will deform when the elastic block 505 is squeezed. When the limit block 502 needs to be moved out of the limiting groove 501, the limit block 502 drives the driving block 504 to be squeezed toward one side of the elastic block 505. The elastic block 505 is squeezed and deformed, and the driving block 504 can continue to move toward one side of the elastic block 505 until the limit block 502 is moved out of the limiting groove 501; the driving rod 506 is used to connect the driving block 504 and the pulling block 507. When in use, the pulling block 507 is used to drive the driving block 504 to move, and the driving block 504 drives the limit block 502 to move.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An injection mold for reverse injection molding, comprising a front mold (1), a rear mold (2) being provided at the bottom of the front mold (1), characterized in that: Also includes: A die mouth (3), the die mouth (3) is inserted and connected to the top of the front die (1); A guide assembly (4), the guide assembly (4) comprising a plurality of guide rods (403) centrally and symmetrically fixedly connected to the top end of the rear mold (2); a plurality of connection grooves (402) centrally and symmetrically opened at the bottom end of the front mold (1); a limiting sleeve (401) inserted and connected inside the connection groove (402); and the guide rods (403) inserted and connected inside the connection groove (402); A mounting assembly (5) is provided on one side of the limiting sleeve (401), and the mounting assembly (5) is used for mounting and dismounting the limiting sleeve (401).

2. The reverse injection mold according to claim 1, characterized in that: A guide groove (404) is provided at the bottom of the limiting sleeve (401), and the guide groove (404) is used to guide the movement of the guide rod (403).

3. The reverse injection mold according to claim 1, characterized in that: An insert (8) is inserted and connected to the top of the rear mold (2), and an insert sleeve (7) is sleeved on the top of the insert (8).

4. The reverse injection mold according to claim 3, characterized in that: The middle part of the insert sleeve (7) is sleeved with a push plate (6), and the push plate (6) is inserted and connected to the top of the rear mold (2).

5. The reverse direction injection mold according to claim 1, characterized in that: The mounting assembly (5) comprises a limiting groove (501) provided on one side of the limiting sleeve (401), and a limiting block (502) is inserted and connected inside the limiting groove (501).

6. The reverse injection mold according to claim 5, characterized in that: One side of the limiting block (502) is fixedly connected to a driving block (504), and one side of the driving block (504) is fixedly connected to an elastic block (505).

7. The reverse injection mold according to claim 6, characterized in that: One side of the driving block (504) is fixedly connected to a driving rod (506), the driving rod (506) is inserted and connected to the middle part of the elastic block (505), and one side of the driving rod (506) is fixedly connected to a pulling block (507).

8. The reverse injection mold according to claim 7, characterized in that: A plurality of cavities (503) are symmetrically provided on both sides of the front mold (1), the driving blocks (504) are inserted and connected inside the cavities (503), and the driving blocks (504) are fixedly connected to the inner wall of one side of the cavities (503).

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