A burr-proof injection molding mold and high-quality injection molding method

Abstract

The present invention relates to the technical field of injection molds, and specifically to a burr-proof injection molding mold and a high-quality injection molding method, comprising an upper mold and a lower mold; an upper module is provided on the top of the upper mold; a lower module is provided on the top of the lower mold; a molding hole is formed between the upper module and the lower module; the lower mold is provided with an active cavity and a cutting plate at the bottom of the lower module; the lower module is provided with a first through hole; the lower mold is provided with a second through hole; the cutting plate is provided with a cutter; and a clamping assembly is provided in the lower module. The present invention cuts the product immediately after the product is injection molded, without the need to transport it to an external cutting device, thereby reducing the problem of inaccurate cutting caused by position changes caused by transportation; in addition, by providing a clamping assembly, the product in the molding hole can be fixed to prevent the position of the product from changing, thereby enabling the product to be accurately cut and effectively preventing the generation of product burrs.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a burr-proof injection molding mold and a high-quality injection molding method. Background Art

[0002] Molds refer to various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. In short, molds are tools used to shape objects. This tool is composed of various parts, and different molds are composed of different parts.

[0003] When injecting plastic products, plastic molds generally have more than two molding holes. After injection molding, the product needs to be cut. During the cutting process, the plastic product is easily damaged to form burrs and other undesirable structures, which will affect the performance of the plastic product. Summary of the invention

[0004] The purpose of the present invention is to provide a burr-proof injection molding die and a high-quality injection molding method in view of the above-mentioned deficiencies in the prior art.

[0005] The object of the present invention is achieved through the following technical solutions: A burr-proof injection molding mold, comprising an upper mold and a lower mold detachably connected to the upper mold; an upper module is provided on the top of the upper mold; a lower module is provided on the top of the lower mold; a molding hole is formed between the upper module and the lower module; the upper mold is provided with an injection port connected to the molding hole;

[0006] The lower mold is provided with a movable cavity at the bottom of the lower module; a cutting plate is provided in the movable cavity for lifting and lowering; the lower module is provided with a first through hole on both sides of the forming hole; the lower mold is provided with a second through hole connected to the first through hole; the cutting plate is provided with a cutting knife; the cutting knife is provided through the second through hole and the first through hole;

[0007] A clamping assembly is arranged in the lower module.

[0008] The present invention is further configured such that the forming hole comprises a left forming hole and a right forming hole;

[0009] The clamping assembly includes a left driving member arranged in the lower module; the output end of the left driving member is provided with a first left push plate; the first left push plate is provided with a first left clamping block; the first left clamping block is movably and telescopically arranged in the left forming hole; the left driving member, the first left push plate and the first left clamping block are all arranged on one side of the left forming hole;

[0010] The clamping assembly also includes a right driving member arranged in the lower module; the output end of the right driving member is provided with a first right push plate; the first right push plate is provided with a first right clamping block; the first right clamping block is movably and telescopically arranged in the right forming hole; the right driving member, the first right push plate and the first right clamping block are all arranged on one side of the right forming hole.

[0011] The present invention is further configured such that the number of the left forming holes is four; the four forming holes are distributed in a straight line; the number of the first left clamping blocks is four; a first left connecting rod is provided between each first left clamping block and the first left push plate;

[0012] The number of the right forming holes is four; the four right forming holes are distributed in a straight line; the number of the first right clamping blocks is four; a first right connecting rod is provided between each first right clamping block and the first right push plate.

[0013] The present invention is further configured that the clamping assembly further includes an abutting cylinder disposed in the lower module; a middle push plate is disposed at the output end of the abutting cylinder;

[0014] A second left push plate is provided on the other side of the left forming hole; the second left push plate is provided with a second left clamping block; the second left clamping block is movably and telescopically arranged in the left forming hole;

[0015] A second right push plate is provided on the other side of the right forming hole; the second right push plate is provided with a second right clamping block; the second right clamping block is movably and telescopically arranged in the right forming hole;

[0016] The middle push plate is used to push the second left push plate and the second right push plate to move simultaneously.

[0017] The present invention is further configured such that the second left push plate and the second right push plate are respectively arranged on both sides of the middle push plate; one side of the middle push plate is provided with a first inclined surface; the second left push plate is provided with a second inclined surface matching with the first inclined surface; the other side of the middle push plate is provided with a third inclined surface; the second right push plate is provided with a fourth inclined surface matching with the third inclined surface.

[0018] The present invention is further configured such that a left fixed block and a right fixed block are provided in the lower module; a left return spring is provided between the left fixed block and the second left push plate; and a right return spring is provided between the right fixed block and the second right push plate.

[0019] The present invention is further configured such that the number of the left forming holes is four; the four left forming holes are distributed in a straight line; the number of the second left clamping blocks is four; a second left connecting rod is provided between each second left clamping block and the second left push plate;

[0020] The number of the right forming holes is four; the four right forming holes are distributed in a straight line; the number of the second right clamping blocks is four; a second right connecting rod is provided between each second right clamping block and the second right push plate.

[0021] The present invention is further configured such that the lower mold is provided with a through hole at the bottom of the cutting plate.

[0022] The present invention is further configured such that the lower mold is provided with a guide sleeve in the movable cavity; the cutting plate is provided with a guide rod slidably connected to the guide sleeve; and the outer sleeve of the guide rod is provided with a buffer spring.

[0023] A high-quality injection molding method for a burr-proof injection molding mold comprises the following steps:

[0024] S1, closing the upper mold and the lower mold;

[0025] S2, injecting plastic material into the molding hole from the injection port;

[0026] S3, opening the upper mold and the lower mold;

[0027] S4, the clamping assembly clamps the product in the forming hole;

[0028] S5, the cutting plate rises, so that the cutter passes through the second perforation and the first perforation in sequence to cut the product;

[0029] S6. Take out the cut product.

[0030] The beneficial effects of the present invention are as follows: the present invention can cut the product immediately after injection molding without transferring it to an external cutting device, thereby reducing the problem of inaccurate cutting caused by position changes due to transportation; in addition, by providing a clamping component, the product in the molding hole can be fixed to prevent the position of the product from changing during the cutting process, thereby enabling the product to be accurately cut and effectively preventing the generation of product burrs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0032] Figure 1 is a cross-sectional view of the present invention;

[0033] Figure 2 is a cross-sectional view of the lower module of the present invention;

[0034] Among them: 1, lower module; 11, left fixed block; 12, right fixed block; 13, left return spring; 14, right return spring; 15, first perforation; 2, upper module; 21, left forming hole; 22, right forming hole; 3, cutting plate; 31, cutter; 32, guide rod; 33, buffer spring; 41, upper mold; 42, lower mold; 43, injection port; 44, movable cavity; 45, second perforation; 46, through hole; 47, guide sleeve; 51, left drive member; 52, first Left push plate; 53, first left clamping block; 54, first left connecting rod; 61, right driving member; 62, first right push plate; 63, first right clamping block; 64, first right connecting rod; 71, abutting cylinder; 72, middle push plate; 73, first inclined surface; 74, third inclined surface; 81, second left push plate; 82, second left clamping block; 83, second left connecting rod; 84, second inclined surface; 91, second right push plate; 92, second right clamping block; 93, second right connecting rod; 94, fourth inclined surface. DETAILED DESCRIPTION

[0035] The present invention is further described in conjunction with the following examples.

[0036] Depend on Figure 1 and Figure 2 It can be seen that the burr-proof injection molding mold described in this embodiment includes an upper mold 41 and a lower mold 42 detachably connected to the upper mold 41; an upper module 2 is provided on the top of the upper mold 41; a lower module 1 is provided on the top of the lower mold 42; a molding hole is formed between the upper module 2 and the lower module 1; the upper mold 41 is provided with an injection port 43 connected to the molding hole;

[0037] The lower mold 42 is provided with a movable cavity 44 at the bottom of the lower module 1; a cutting plate 3 is provided in the movable cavity 44 for lifting and lowering; the lower module 1 is provided with a first through hole 15 on both sides of the forming hole; the lower mold 42 is provided with a second through hole 45 connected with the first through hole 15; the cutting plate 3 is provided with a cutter 31; the cutter 31 is provided through the second through hole 45 and the first through hole 15;

[0038] The lower module 1 is provided with a clamping assembly.

[0039] Specifically, the anti-burr injection molding mold described in this embodiment, when in use, the upper mold 41 and the lower mold 42 are molded together, and then the plastic material is injected into the molding hole from the injection port 43. After waiting for a period of time, the product is injection molded, and then the upper mold 41 and the lower mold 42 are opened. At this time, the clamping component clamps the product in the molding hole, and then the cutting plate 3 rises, so that the cutter 31 passes through the second through hole 45 and the first through hole 15 in sequence to cut the product, and the product is taken out after the cutting is completed;

[0040] This embodiment cuts the product immediately after injection molding, without the need to transfer it to an external cutting device, thereby reducing the problem of inaccurate cutting caused by position changes due to transportation; in addition, by providing a clamping component, the product in the molding hole can be fixed to prevent the position of the product from changing during the cutting process, thereby enabling the product to be accurately cut and effectively preventing the generation of product burrs.

[0041] In the burr-proof injection molding die described in this embodiment, the molding holes include a left molding hole 21 and a right molding hole 22;

[0042] The clamping assembly includes a left driving member 51 disposed in the lower module 1; a first left push plate 52 is disposed at the output end of the left driving member 51; the first left push plate 52 is provided with a first left clamping block 53; the first left clamping block 53 is movably and telescopically disposed in the left forming hole 21; the left driving member 51, the first left push plate 52 and the first left clamping block 53 are all disposed on one side of the left forming hole 21;

[0043] The clamping assembly also includes a right driving member 61 arranged in the lower module 1; the output end of the right driving member 61 is provided with a first right push plate 62; the first right push plate 62 is provided with a first right clamping block 63; the first right clamping block 63 is movably and telescopically arranged in the right forming hole 22; the right driving member 61, the first right push plate 62 and the first right clamping block 63 are all arranged on one side of the right forming hole 22.

[0044] Specifically, after injection molding, the products are respectively in the left molding hole 21 and the right molding hole 22. Before the cutter 31 cuts, the left driving member 51 and the right driving member 61 work respectively to push the first left clamping block 53 into the left molding hole 21 and push the first right clamping block 63 into the right molding hole 22, thereby clamping the plastic product to prevent shaking during the cutting process and achieve the function of precise cutting.

[0045] In the burr-proof injection molding mold described in this embodiment, the number of the left molding holes 21 is four; the four molding holes are distributed in a straight line; the number of the first left clamping blocks 53 is four; a first left connecting rod 54 is provided between each first left clamping block 53 and the first left push plate 52;

[0046] The number of the right forming holes 22 is four; the four right forming holes 22 are distributed in a straight line; the number of the first right clamping blocks 63 is four; and a first right connecting rod 64 is provided between each first right clamping block 63 and the first right push plate 62 .

[0047] Specifically, through the above arrangement, cost can be saved, and space can be saved by pushing multiple first left clamping blocks 53 through one first left push plate 52 and pushing multiple first right clamping blocks 63 through one first right push plate 62.

[0048] In the burr-proof injection molding mold described in this embodiment, the clamping assembly further includes an abutting cylinder 71 disposed in the lower module 1; a middle push plate 72 is disposed at the output end of the abutting cylinder 71;

[0049] A second left push plate 81 is disposed on the other side of the left forming hole 21; the second left push plate 81 is provided with a second left clamping block 82; the second left clamping block 82 is movably and telescopically disposed in the left forming hole 21;

[0050] A second right push plate 91 is disposed on the other side of the right forming hole 22; the second right push plate 91 is provided with a second right clamping block 92; the second right clamping block 92 is movably and telescopically disposed in the right forming hole 22;

[0051] The middle push plate 72 is used to push the second left push plate 81 and the second right push plate 91 to move simultaneously.

[0052] Specifically, before the cutter 31 starts cutting, the left driving member 51 and the right driving member 61 work respectively, and the abutting cylinder 71 is started. While the abutting cylinder 71 pushes the middle push plate 72 forward, it pushes the second left push plate 81 and the second right push plate 91 to move toward the left molding hole 21 and the right molding hole 22 respectively, so that the plastic product is clamped between the first left clamp block 53 and the second left clamp block 82, and the plastic product is clamped between the first right clamp block 63 and the second right clamp block 92, further enhancing the stability of the plastic product.

[0053] In the burr-proof injection molding mold described in this embodiment, the second left push plate 81 and the second right push plate 91 are respectively arranged on both sides of the middle push plate 72; one side of the middle push plate 72 is provided with a first inclined surface 73; the second left push plate 81 is provided with a second inclined surface 84 cooperating with the first inclined surface 73; the other side of the middle push plate 72 is provided with a third inclined surface 74; the second right push plate 91 is provided with a fourth inclined surface 94 cooperating with the third inclined surface 74.

[0054] Through the above arrangement, when the middle push plate 72 moves forward, it pushes the second left push plate 81 and the second right push plate 91 to move toward the left forming hole 21 and the right forming hole 22 respectively.

[0055] In the burr-proof injection molding mold described in this embodiment, a left fixed block 11 and a right fixed block 12 are provided in the lower module 1; a left return spring 13 is provided between the left fixed block 11 and the second left push plate 81; and a right return spring 14 is provided between the right fixed block 12 and the second right push plate 91.

[0056] The above arrangement facilitates the resetting of the second left push plate 81 and the second right push plate 91 .

[0057] In the burr-proof injection molding mold described in this embodiment, the number of the left molding holes 21 is four; the four left molding holes 21 are distributed in a straight line; the number of the second left clamping blocks 82 is four; a second left connecting rod 83 is provided between each second left clamping block 82 and the second left push plate 81;

[0058] The number of the right forming holes 22 is four; the four right forming holes 22 are distributed in a straight line; the number of the second right clamping blocks 92 is four; and a second right connecting rod 93 is provided between each second right clamping block 92 and the second right push plate 91 .

[0059] Specifically, the above arrangement can save costs, and space can be saved by pushing multiple second left clamping blocks 82 through one second left push plate 81 and pushing multiple second right clamping blocks 92 through one second right push plate 91. The right driving member 61 and the left driving member 51 are both cylinders.

[0060] In the burr-proof injection molding mold described in this embodiment, the lower mold 42 is provided with a through hole 46 at the bottom of the cutting plate 3. The above arrangement facilitates the external cylinder to pass through the through hole 46 and control the cutting plate 3 to rise and fall.

[0061] In the burr-proof injection molding mold described in this embodiment, the lower mold 42 is provided with a guide sleeve 47 in the movable cavity 44; the cutting plate 3 is provided with a guide rod 32 slidably connected to the guide sleeve 47; and a buffer spring 33 is provided on the outer sleeve of the guide rod 32. The guide sleeve 47 and the guide rod 32 are provided to guide the lifting of the cutting plate 3; and the buffer spring 33 is provided to play a resetting and buffering role.

[0062] The high-quality injection molding method of a burr-proof injection molding mold described in this embodiment includes the following steps:

[0063] S1, closing the upper mold 41 and the lower mold 42;

[0064] S2, injecting plastic material into the molding hole from the injection port 43;

[0065] S3, opening the upper mold 41 and the lower mold 42;

[0066] S4, the clamping assembly clamps the product in the forming hole;

[0067] S5, the cutting plate 3 rises, so that the cutter 31 passes through the second perforation 45 and the first perforation 15 in sequence to cut the product;

[0068] S6. Take out the cut product.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A burr-proof injection molding mold, characterized in that: The invention comprises an upper mold (41) and a lower mold (42) detachably connected to the upper mold (41); an upper module (2) is provided on the top of the upper mold (41); a lower module (1) is provided on the top of the lower mold (42); a molding hole is formed between the upper module (2) and the lower module (1); and the upper mold (41) is provided with an injection port (43) connected to the molding hole; The lower mold (42) is provided with a movable cavity (44) at the bottom of the lower module (1); a cutting plate (3) is provided in the movable cavity (44) for lifting and lowering; the lower module (1) is provided with a first through hole (15) on both sides of the forming hole; the lower mold (42) is provided with a second through hole (45) connected to the first through hole (15); the cutting plate (3) is provided with a cutting knife (31); the cutting knife (31) is provided in the second through hole (45) and the first through hole (15); The lower module (1) is provided with a clamping assembly; The forming holes include a left forming hole (21) and a right forming hole (22); The clamping assembly comprises a left driving member (51) disposed in the lower module (1); a first left push plate (52) is disposed at the output end of the left driving member (51); the first left push plate (52) is provided with a first left clamping block (53); the first left clamping block (53) is movably and telescopically disposed in the left forming hole (21); the left driving member (51), the first left push plate (52) and the first left clamping block (53) are all disposed on one side of the left forming hole (21); The clamping assembly further comprises a right driving member (61) disposed in the lower module (1); a first right push plate (62) is disposed at the output end of the right driving member (61); the first right push plate (62) is provided with a first right clamping block (63); the first right clamping block (63) is movably and telescopically disposed in the right forming hole (22); the right driving member (61), the first right push plate (62) and the first right clamping block (63) are all disposed on one side of the right forming hole (22); The clamping assembly further comprises a supporting cylinder (71) arranged in the lower module (1); a middle push plate (72) is arranged at the output end of the supporting cylinder (71); A second left push plate (81) is provided on the other side of the left forming hole (21); the second left push plate (81) is provided with a second left clamping block (82); the second left clamping block (82) is movably and telescopically arranged in the left forming hole (21); A second right push plate (91) is provided on the other side of the right forming hole (22); the second right push plate (91) is provided with a second right clamping block (92); the second right clamping block (92) is movably and telescopically arranged in the right forming hole (22); The middle push plate (72) is used to simultaneously push the second left push plate (81) and the second right push plate (91) to move; The second left push plate (81) and the second right push plate (91) are respectively arranged on both sides of the middle push plate (72); a first inclined surface (73) is arranged on one side of the middle push plate (72); the second left push plate (81) is provided with a second inclined surface (84) matched with the first inclined surface (73); a third inclined surface (74) is arranged on the other side of the middle push plate (72); the second right push plate (91) is provided with a fourth inclined surface (94) matched with the third inclined surface (74); The lower mold (42) is provided with a through hole (46) at the bottom of the cutting plate (3).

2. The burr-proof injection molding mold according to claim 1, characterized in that: The number of the left forming holes (21) is four; the four forming holes are distributed in a straight line; the number of the first left clamping blocks (53) is four; a first left connecting rod (54) is provided between each first left clamping block (53) and the first left push plate (52); The number of the right forming holes (22) is four; the four right forming holes (22) are distributed in a straight line; the number of the first right clamping blocks (63) is four; and a first right connecting rod (64) is provided between each first right clamping block (63) and the first right push plate (62).

3. The burr-proof injection molding mold according to claim 1, characterized in that: The lower module (1) is provided with a left fixed block (11) and a right fixed block (12); a left return spring (13) is provided between the left fixed block (11) and the second left push plate (81); and a right return spring (14) is provided between the right fixed block (12) and the second right push plate (91).

4. The burr-proof injection molding mold according to claim 1, characterized in that: The number of the left forming holes (21) is four; the four left forming holes (21) are distributed in a straight line; the number of the second left clamping blocks (82) is four; a second left connecting rod (83) is provided between each second left clamping block (82) and the second left push plate (81); The number of the right forming holes (22) is four; the four right forming holes (22) are distributed in a straight line; the number of the second right clamping blocks (92) is four; and a second right connecting rod (93) is provided between each second right clamping block (92) and the second right push plate (91).

5. The burr-proof injection molding mold according to claim 1, characterized in that: The lower mold (42) is provided with a guide sleeve (47) in the movable cavity (44); the cutting plate (3) is provided with a guide rod (32) slidably connected to the guide sleeve (47); and a buffer spring (33) is provided on the outer sleeve of the guide rod (32).

6. A high-quality injection molding method based on the burr-proof injection molding mold according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1, closing the upper mold (41) and the lower mold (42); S2, injecting plastic material into the molding hole from the injection port (43); S3, opening the upper mold (41) and the lower mold (42); S4, the clamping assembly clamps the product in the forming hole; S5, the cutting plate (3) rises, so that the cutting knife (31) passes through the second perforation (45) and the first perforation (15) in sequence to cut the product; S6. Take out the cut product.

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