Injection mold for bracket type parts

Abstract

The utility model relates to the technical field of injection molding devices, and provides an injection mold for bracket type parts, which comprises a fixed mold assembly, a movable mold assembly, a sliding block mechanism, a feeding assembly and a product cavity, the multiple feeding grooves are distributed in the outer side of the product cavity, at least two feeding grooves are oppositely arranged, and the sliding block mechanism is provided with a sliding block arranged in the product cavity. Compared with the prior art, the injection mold has the advantages that the plurality of feeding grooves are formed in the outer side of the product cavity, and at least two feeding grooves are oppositely formed, so that the product cavity can be provided with a plurality of filling points, weld marks cannot appear on the surface of a formed product, and the sliding blocks are arranged in the product cavity, so that the product cavity is more compact, and the production efficiency is improved. The driving block for driving the sliding block to move is arranged in the fixed mold cavity block, so that the volume of the injection mold occupied by the sliding block mechanism is reduced, and the manufacturing cost of the injection mold is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding devices, in particular to an injection molding die for bracket-type parts. Background Art

[0002] Injection molds are tools used in the plastic processing industry to match plastic molding machines and give plastic products complete configurations and precise dimensions. Due to the wide variety of plastics and processing methods, and the varying structures of plastic molding machines and plastic products, there are also many types and structures of injection molds.

[0003] like Figure 1 A bracket-type part shown is also produced by an injection mold. When designing the feeding system of a traditional injection mold, the feed port is usually set at the center of the bracket. During the feeding process, the injection molding material first fills the center of the molding bracket and then diffuses to the surrounding area. This filling method will cause welding marks to appear on the upper surface of the bracket after the injection molding material is filled. Such a bracket cannot meet the customer's design requirements for appearance parts, and because the side wall of the bracket has an undercut structure, a slider structure needs to be set on the mold when the mold is set, so that the bracket can be removed from the mold after it is formed. Traditional slider mechanisms are mostly achieved by setting a cylinder on the outside of the mold to drive the slider structure to move on the mold, which will increase the volume of the entire injection mold and increase the manufacturing cost of the injection mold. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an injection mold for bracket parts in view of the current status of the prior art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: to propose an injection mold for bracket parts, including: a fixed mold assembly, which has a fixed mold frame and a fixed mold cavity block fixed on the fixed mold frame;

[0006] A movable mold assembly, comprising a movable mold frame movably matched with the fixed mold frame and a movable mold cavity block movably matched with the fixed mold cavity block, wherein when the movable mold frame abuts against the fixed mold frame, a product cavity is formed between the fixed mold cavity block and the movable mold cavity block;

[0007] A slider mechanism, comprising a driving block fixed in the fixed mold cavity block, and a sliding block movably arranged in the movable mold cavity block, wherein the sliding block is movably arranged in the product cavity along a direction perpendicular to the fixed mold assembly and pointing to the movable mold assembly, wherein the driving block movably abuts against the sliding block and is used to drive the sliding block to move in the product cavity;

[0008] A feed assembly, comprising a hot runner fixed in the fixed mold assembly and a plurality of feed troughs arranged on the fixed mold cavity block, wherein the plurality of feed troughs are distributed on the outside of the product cavity, and at least two of the feed troughs are arranged opposite to each other, and the portions of the plurality of feed troughs connected with the product cavity all point to the center position of the movable mold assembly, and the hot runner has a discharge port corresponding to the feed trough one by one, and the discharge port is connected with the feed trough to provide injection molding raw materials for the product cavity.

[0009] In the above-mentioned injection mold for bracket-type parts, the feed trough has an opening toward the movable model cavity block, the width of the feed trough gradually decreases along the direction from the fixed mold assembly to the movable mold assembly, and the movable model cavity block is provided with a pulling trough connected to the feed trough, which is used to retain the material head formed in the feed trough on the movable model cavity block.

[0010] The above-mentioned injection mold for bracket-type parts also includes an ejection mechanism, which has an ejector rod whose end passes through the movable model cavity block and is movably inserted in the pulling trough, and the ejector rod is used to push the material head away from the movable model cavity block.

[0011] In the above-mentioned injection mold for bracket-type parts, the sliding block has a first T-shaped slot arranged obliquely, and the driving block has a first T-shaped block arranged obliquely, and the first T-shaped block is movably inserted in the first T-shaped slot.

[0012] In the above-mentioned injection mold for bracket parts, the slider mechanism includes:

[0013] A fixed block, which is threadedly connected to the dynamic model cavity block, the fixed block is provided with a second T-block, the sliding block is provided with a second T-slot, and the second T-slot is sleeved on the outer side wall of the second T-block;

[0014] A profiling block, wherein the sliding block is provided with a through hole penetrating the side wall of the sliding block along the moving direction of the sliding block, the profiling block is inserted into the through hole, and the end of the profiling block has a profile that constitutes the side wall structure of the product cavity;

[0015] A clamping column, a mounting hole is provided on the sliding block along the fixed mold assembly pointing to the movable mold assembly, the mounting hole is connected to the through hole, and a clamping groove is provided on the side wall of the profiling block, the clamping column is inserted in the mounting hole and clamped with the clamping groove.

[0016] The above-mentioned injection mold for bracket-type parts also includes a plurality of cooling water channels arranged on the movable mold cavity block along a direction parallel to the fixed mold assembly and pointing to the movable mold assembly, each of the cooling water channels is inserted with a water baffle, and the water baffle separates the cooling water channel into a water inlet and a water outlet, and a connecting groove is provided on the side of the movable mold cavity block facing the movable mold frame, and the plurality of cooling water channels are all connected to the connecting groove, and the movable mold frame is provided with water inlet channels and water outlet channels that are connected to the connecting groove at intervals.

[0017] Compared with the prior art, the advantage of the utility model lies in that a plurality of feed grooves are arranged on the outside of the product cavity, and at least two of the feed grooves are arranged relative to each other, so that the product cavity can have multiple filling points, so that no welding marks will appear on the surface of the product after molding, and a sliding block is arranged in the product cavity, and a driving block that drives the sliding block to move is arranged in the fixed model cavity block, so as to reduce the volume of the injection mold occupied by the slider mechanism and reduce the manufacturing cost of the injection mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional image of the bracket;

[0019] Figure 2 It is a three-dimensional diagram of this scheme;

[0020] Figure 3 It is a three-dimensional diagram of the fixed mold assembly;

[0021] Figure 4 It is a three-dimensional diagram of the movable mold assembly;

[0022] Figure 5 yes Figure 4 Floor plan in ;

[0023] Figure 6 yes Figure 5 Sectional view along AA direction;

[0024] Figure 7 yes Figure 4 A plan view from another direction;

[0025] Figure 8 yes Figure 7 Cross-sectional view along the BB direction;

[0026] Fig. 9 It is a partial cross-sectional view when the sliding block is connected to the fixed block;

[0027] Fig.10 is a stereogram of the sliding block;

[0028] Fig.11 It is a stereogram of the contour block.

[0029] In the figure, 1, fixed mold assembly; 2, fixed mold frame; 3, fixed mold cavity block; 4, movable mold assembly; 5, movable mold frame; 6, movable mold cavity block; 7, driving block; 8, sliding block; 9, feed trough; 10, pulling trough; 11, ejector rod; 12, first T-slot; 13, first T-block; 14, fixed block; 15, second T-block; 16, second T-slot; 17, contour block; 18, through hole; 19, clamping column; 20, mounting hole; 21, clamping groove; 22, cooling water channel; 23, water-blocking plate; 24, connecting groove; 25, water inlet channel; 26, water outlet channel. DETAILED DESCRIPTION

[0030] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0031] like Figures 2 to 11 As shown, the utility model is an injection mold for bracket parts, comprising: a fixed mold assembly 1, which has a fixed mold frame 2 and a fixed mold cavity block 3 fixed on the fixed mold frame 2; a movable mold assembly 4, which has a movable mold frame 5 movably matched with the fixed mold frame 2 and a movable mold cavity block 6 movably matched with the fixed mold cavity block 3, when the movable mold frame 5 abuts against the fixed mold frame 2, a product cavity is formed between the fixed mold cavity block 3 and the movable mold cavity block 6; a slider mechanism, which has a driving block 7 fixed in the fixed mold cavity block 3, and a sliding block 8 movably arranged in the movable mold cavity block 6, the sliding block 8 is perpendicular to the fixed mold assembly 1 and points to the movable mold cavity block 6. The mold assembly 4 is movably arranged in the product cavity, and the driving block 7 is movably abutted against the sliding block 8 and is used to drive the sliding block 8 to move in the product cavity; the feed assembly has a hot runner fixed in the fixed mold assembly 1 and a plurality of feed grooves 9 arranged on the fixed mold cavity block 3, the plurality of feed grooves 9 are distributed on the outside of the product cavity, and at least two feed grooves 9 are arranged opposite to each other, and the parts of the plurality of feed grooves 9 connected with the product cavity all point to the center position of the movable mold assembly 4, the hot runner has a discharge port corresponding to the feed groove 9 one by one, and the discharge port is connected with the feed groove 9 to provide injection molding raw materials for the product cavity.

[0032] During operation, the movable mold component 4 and the fixed mold component 1 are respectively fixed to the movable part and the fixed part of the injection molding machine, and the movable mold component 4 is driven by the movable part of the injection molding machine to move closer to or farther from the fixed mold component 1 to realize the closing and opening actions of the injection mold. After the injection mold is closed, the injection molding machine first injects the injection molding material into the hot runner. After passing through the hot runner, the injection molding material flows into the product cavity through the feed groove 9, and the product cavity is filled to form the product. In this scheme, a plurality of feed grooves 9 are arranged on the outside of the product cavity, and at least two of the feed grooves 9 are arranged relative to each other, so that the product cavity can have multiple filling points, so that no welding marks will appear on the surface of the molded product, and a sliding block 8 is arranged in the product cavity, and the driving block 7 that drives the sliding block 8 to move is arranged in the fixed model cavity block 3, so as to reduce the volume of the injection mold occupied by the slider mechanism and reduce the manufacturing cost of the injection mold.

[0033] Furthermore, the feed trough 9 has an opening toward the movable model cavity block 6, and the width of the feed trough 9 gradually decreases in the direction from the fixed mold assembly 1 to the movable mold assembly 4, and a pulling trough 10 connected to the feed trough 9 is provided on the movable model cavity block 6, which is used to retain the material head formed in the feed trough 9 on the movable model cavity block 6.

[0034] After the product is cooled in the product cavity, the injection molding machine drives the movable mold assembly 4 to separate from the fixed mold assembly 1. Due to the gradual decrease in the width of the feed trough 9 in the direction from the fixed mold assembly 1 to the movable mold assembly 4 and the existence of the pulling trough 10, the material head formed in the feed trough 9 is subjected to a greater pulling force from the movable mold assembly 4, thereby retaining the material head on the movable mold assembly 4, making it easier to remove the material head from the injection mold later.

[0035] Furthermore, the present solution also includes an ejection mechanism having an ejection rod 11 whose end penetrates the movable model cavity block 6 and is movably inserted into the pulling trough 10 , and the ejection rod 11 is used to eject the material head from the movable model cavity block 6 .

[0036] In the present solution, the ejection mechanism comprises an ejector push plate and an ejector fixing plate movably arranged on the movable mold assembly 4, the ejector 11 is clamped with the ejector fixing plate and the bottom of the ejector 11 is pressed against the ejector push plate, and the injection molding machine is provided with a power mechanism for pushing the ejector push plate to move. After the injection mold is opened, the power mechanism drives the ejector push plate to move and drives the end of the ejector 11 to extend out of the pulling trough 10, thereby ejecting the material head out of the injection mold.

[0037] Furthermore, the sliding block 8 has a first T-shaped slot 12 that is inclined, and the driving block 7 has a first T-shaped block 13 that is inclined. The first T-shaped block 13 is movably inserted in the first T-shaped slot 12. The setting of the first T-shaped slot 12 and the first T-shaped block 13 is used to enable the driving block 7 to drive the sliding block 8 to move on the movable model cavity block 6.

[0038] Furthermore, the slider mechanism includes: a fixed block 14, which is threadedly connected to the movable mold cavity block 6, a second T-block 15 is arranged on the fixed block 14, a second T-slot 16 is arranged on the sliding block 8, and the second T-slot 16 is sleeved on the outer wall of the second T-block 15; a profiling block 17, a through hole 18 is arranged on the sliding block 8 and passes through the side wall of the sliding block 8 along the moving direction of the sliding block 8, the profiling block 17 is inserted in the through hole 18, and the end of the profiling block 17 has a profile of the side wall structure of the product cavity; a clamping column 19, a mounting hole 20 is arranged on the sliding block 8 along the fixed mold assembly 1 pointing to the movable mold assembly 4, the mounting hole 20 is connected with the through hole 18, and a clamping groove 21 is arranged on the side wall of the profiling block 17, and the clamping column 19 is inserted in the mounting hole 20 and clamped with the clamping groove 21.

[0039] By arranging a second T-block 15 on the fixed block 14 and arranging a second T-slot 16 on the sliding block 8 and sleeved on the outer wall of the second T-block 15, it is used to guide the movement of the sliding block 8. The profiling block 17 is used to form the side wall structure of the product. The clamping column 19 and the clamping groove 21 are set to realize the fixation of the profiling block 17 on the sliding block 8.

[0040] Furthermore, the present scheme also includes a plurality of cooling water channels 22 arranged on the movable mold cavity block 6 along a direction parallel to the fixed mold assembly 1 pointing toward the movable mold assembly 4, a water baffle 23 is inserted in each cooling water channel 22, the water baffle 23 separates the cooling water channel 22 into a water inlet and a water outlet, a connecting groove 24 is arranged on the side of the movable mold cavity block 6 facing the movable mold frame 5, the plurality of cooling water channels 22 are all connected to the connecting groove 24, and the movable mold frame 5 is provided with water inlet channels 25 and water outlet channels 26 connected to the connecting groove 24 at intervals.

[0041] The cooling water channel 22 is used to take away the heat of the moving model cavity block 6 so that the injection mold can always maintain a certain injection temperature. The cooling water channel 22 is set to be parallel to the fixed mold assembly 1 and point to the movable mold assembly 4, which is used to increase the width of the cooling water channel 22 and improve the cooling effect of the injection mold. The water inlet channel 25 and the water outlet channel 26 on the movable mold frame 5 are used for the circulation of cooling water in the movable model cavity block 6.

[0042] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. An injection mold for bracket parts, characterized in that: include: A fixed mold assembly, comprising a fixed mold frame and a fixed mold cavity block fixed on the fixed mold frame; A movable mold assembly, comprising a movable mold frame movably matched with the fixed mold frame and a movable mold cavity block movably matched with the fixed mold cavity block, wherein when the movable mold frame abuts against the fixed mold frame, a product cavity is formed between the fixed mold cavity block and the movable mold cavity block; A slider mechanism, comprising a driving block fixed in the fixed mold cavity block, and a sliding block movably arranged in the movable mold cavity block, the sliding block being movably arranged in the product cavity along a direction perpendicular to the fixed mold assembly and pointing to the movable mold assembly, the driving block movably abutting against the sliding block and used to drive the sliding block to move in the product cavity; A feed assembly, comprising a hot runner fixed in the fixed mold assembly and a plurality of feed troughs arranged on the fixed mold cavity block, wherein the plurality of feed troughs are distributed on the outside of the product cavity, and at least two of the feed troughs are arranged opposite to each other, and the portions of the plurality of feed troughs connected with the product cavity all point to the center position of the movable mold assembly, and the hot runner has a discharge port corresponding to the feed trough one by one, and the discharge port is connected with the feed trough to provide injection molding raw materials for the product cavity.

2. An injection mold for bracket parts according to claim 1, characterized in that: The feed trough has an opening toward the movable model cavity block, and the width of the feed trough gradually decreases along the direction from the fixed mold assembly to the movable mold assembly, and a pulling trough connected to the feed trough is provided on the movable model cavity block, which is used to retain the material head formed in the feed trough on the movable model cavity block.

3. An injection mold for bracket parts as claimed in claim 2, characterized in that: It also includes an ejection mechanism, which has an ejector rod whose end passes through the movable model cavity block and is movably inserted into the material pulling trough, and the ejector rod is used to push the material head away from the movable model cavity block.

4. An injection mold for bracket parts according to claim 1, characterized in that: The sliding block is provided with a first T-shaped slot which is arranged obliquely, and the driving block is provided with a first T-shaped block which is arranged obliquely, and the first T-shaped block is movably inserted in the first T-shaped slot.

5. The injection mold for bracket parts according to claim 1, characterized in that: The slider mechanism comprises: A fixed block, which is threadedly connected to the dynamic model cavity block, the fixed block is provided with a second T-block, the sliding block is provided with a second T-slot, and the second T-slot is sleeved on the outer side wall of the second T-block; A profiling block, wherein the sliding block is provided with a through hole penetrating the side wall of the sliding block along the moving direction of the sliding block, the profiling block is inserted into the through hole, and the end of the profiling block has a profile that constitutes the side wall structure of the product cavity; A clamping column, a mounting hole is provided on the sliding block along the fixed mold assembly pointing to the movable mold assembly, the mounting hole is connected to the through hole, and a clamping groove is provided on the side wall of the profiling block, the clamping column is inserted in the mounting hole and clamped with the clamping groove.

6. The injection mold for bracket parts according to claim 1, characterized in that: It also includes a plurality of cooling water channels arranged on the movable mold cavity block along a direction parallel to the fixed mold assembly and pointing to the movable mold assembly, a water baffle is inserted in each of the cooling water channels, the water baffle separates the cooling water channel into a water inlet and a water outlet, a connecting groove is provided on the side of the movable mold cavity block facing the movable mold frame, a plurality of cooling water channels are all connected to the connecting groove, and water inlet channels and water outlet channels connected to the connecting groove are arranged at intervals on the movable mold frame.

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