Injection molding glue feeding mold

Abstract

The utility model relates to the technical field of injection molding, and discloses an injection molding glue feeding mold, which comprises a bottom mold, appearance slides and a lateral demolding mechanism, the parting surface of the bottom mold is provided with a sprue groove, the appearance slides are relatively slidably arranged on the bottom mold, and the opposite appearance slides have a closed pouring state and a separated demolding state. The parting surfaces of the opposite appearance slides are matched to form a glue inlet runner and a pouring cavity, the glue inlet runner is communicated with the pouring cavity through a sprue groove, the lateral demolding mechanism is movably arranged between the bottom mold and the appearance slides, and the parting surface of the lateral demolding mechanism is matched with the parting surface of the bottom mold to form a submerged sprue runner. And the pouring gate groove is communicated with an inner pouring gate of the pouring cavity through a submerged pouring gate runner. The problems that the mold surface is crushed and the product injection molding quality is affected due to the fact that rubber powder is accumulated on the mold surface during injection molding production are solved, and long-term stable production of the product is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding, in particular to an injection molding die. Background Art

[0002] In the current injection mold industry, there are different requirements for the outer surface of injection molded products, such as A0 high gloss, VDI texture, sun-dried texture, finely carved texture, ordinary B1 light-saving, etc. According to different outer surface requirements, it is necessary to select a suitable pouring method. Specifically, when the outer surface of the injection molded product is A0 high gloss, it is required that there should be no pouring marks, and the gate can only be poured from the outside into the inside, that is, the gate connected to one end of the injection cavity sinks into the mold for a distance and then connects with the inner gate of the injection cavity. The latent pouring will produce powder particles, commonly known as rubber powder, because the injection molded product and the gate will break and separate when the injection molded product is ejected and demolded.

[0003] When the glue powder falls on the parting surface, it will accumulate for a certain period of time and damage the parting surface of the mold, causing irreversible damage to the mold. After the mold is damaged, it cannot be sealed well, and the mold mouth cannot meet the requirements of the parting PL line. When the drag glue powder falls on the mold cavity, it will partially attach to the surface of the product after molding and injection. Because the fallen glue powder does not dissolve at the high temperature of the injection molding machine, it forms a particle color different from the main surface, resulting in poor appearance. Utility Model Content

[0004] In view of this, the utility model provides an injection molding mold to solve the problem that when the existing injection molded products are ejected and demolded, the injection molded products and the gate are broken and separated, resulting in the accumulation of glue powder on the parting surface, damaging the mold and affecting the injection molding appearance quality of the product.

[0005] The utility model provides an injection molding mold, comprising a bottom mold, an appearance slide and a lateral demoulding mechanism, wherein a parting surface of the bottom mold is provided with a gate groove, the appearance slide is relatively slidably arranged on the bottom mold, the relative appearance slide has a closed casting state and a separated demoulding state, the parting surfaces of the relative appearance slide cooperate to form a glue-injection flow channel and a casting cavity, the glue-injection flow channel is connected with the casting cavity through the gate groove, the lateral demoulding mechanism is movably arranged between the bottom mold and the appearance slide, the parting surface of the lateral demoulding mechanism cooperates with the parting surface of the bottom mold to form a submerged gate flow channel, and the gate groove is connected with the inner gate of the casting cavity through the submerged gate flow channel.

[0006] In the injection molding glue-injection mold of the utility model, glue liquid enters the gate groove through the glue-injection flow channel, flows into the submerged gate flow channel through the gate groove, and flows into the casting cavity through the inner gate, forming an injection molded product in the casting cavity. When demoulding, the relative appearance slides and separates to a demoulding state to expose the product, and the lateral demoulding mechanism moves along the bottom mold to expose and demould the gate formed by the submerged gate flow channel, and then the connected product and the gate are ejected as a whole to be demoulded. Since the product and the gate are always connected during the demoulding process, no breakage or separation will occur, so there will be no problem of glue powder falling, which solves the problem of glue powder accumulation on the mold surface causing damage to the mold surface and affecting the injection molding quality of the product during injection molding production, and realizes long-term and stable production of products.

[0007] In some embodiments, a slide groove is provided on the bottom mold, and the slide groove is extended along the moving direction of the lateral demoulding mechanism, and the lateral demoulding mechanism is movably disposed in the slide groove.

[0008] In some embodiments, the lateral demolding mechanism includes a gate slide, which is movably disposed in the chute, and the submerged gate runner is formed between the parting surface of the gate slide and the parting surface of the bottom mold.

[0009] In some embodiments, the lateral demolding mechanism further includes a limiting assembly, which is connected to the bottom mold and is used to limit the position of the gate within the chute.

[0010] In some embodiments, a pressure edge is extended from the side of the gate position, and the limiting component is limitedly abutted against the top of the pressure edge.

[0011] In some embodiments, the limit assembly includes a limit block and / or a locking portion, the limit block is fixedly disposed on the bottom mold, a portion of the limit block extends into the slide groove and abuts against the top of the pressure edge, and the locking portion is connected and fixed to both the limit block and the bottom mold.

[0012] In some embodiments, a mounting groove is further provided on the bottom mold, the mounting groove is connected to the slide groove, and the limit block is arranged in the mounting groove.

[0013] In some embodiments, the gate slider is connected to the exterior slider, so that the gate slider is driven to move relative to the bottom mold by sliding of the exterior slider.

[0014] In some embodiments, one of the gate slider and the appearance slider is provided with a connecting protrusion, and the other is provided with a connecting groove, and the connecting protrusion fits in the connecting groove.

[0015] In some embodiments, the connecting protrusion is movably disposed in the connecting groove, and a maximum distance that the connecting protrusion moves in the connecting groove is smaller than a moving demoulding stroke of the appearance slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of the injection molding die of the utility model embodiment;

[0018] Figure 2 This is a schematic diagram of the three-dimensional exploded structure of the injection molding die of the embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the appearance slide and the injection molding mold of the embodiment of the utility model;

[0020] Figure 4 It is an enlarged structural diagram of the appearance of the embodiment of the utility model;

[0021] Figure 5 It is an enlarged structural schematic diagram of the gate position of an embodiment of the utility model;

[0022] Figure 6 It is a partial cross-sectional view of the injection molding die of the embodiment of the utility model;

[0023] Figure 7 This is a structural schematic diagram of the injection molding mold of the embodiment of the utility model when the product is demoulded;

[0024] Figure 8 for Figure 7 Schematic diagram of the enlarged structure at point A in the middle.

[0025] Description of reference numerals:

[0026] 1. Bottom mold; 11. Gate groove; 12. Slide groove; 13. Installation groove;

[0027] 2. Appearance position; 21. Glue inlet channel; 22. Casting cavity; 23. Avoidance groove; 24. Connection groove;

[0028] 3. Lateral demoulding mechanism; 31. Gate position; 311. Submerged gate runner; 312. Edge pressing; 313. Connecting protrusion; 32. Limiting assembly; 321. Limiting block; 322. Locking part;

[0029] 4. Ejection mechanism; 5. Insert;

[0030] 100, product; 200, gate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0032] Combine the following Figures 1 to 8 , describing an embodiment of the utility model.

[0033] The present embodiment discloses an injection molding mold, comprising a base mold 1, an appearance slide 2 and a lateral demoulding mechanism 3, wherein a parting surface of the base mold 1 is provided with a gate groove 11, the appearance slide 2 is relatively slidably arranged on the base mold 1, the relative appearance slide 2 has a closed casting state and a separated demoulding state, the parting surfaces of the relative appearance slide 2 cooperate to form a glue injection flow channel 21 and a casting cavity 22, the glue injection flow channel 21 is connected to the casting cavity 22 through the gate groove 11, the lateral demoulding mechanism 3 is movably arranged between the base mold 1 and the appearance slide 2, the parting surface of the lateral demoulding mechanism 3 and the parting surface of the base mold 1 cooperate to form a submerged gate flow channel 311, and the gate groove 11 is connected to the inner gate of the casting cavity 22 through the submerged gate flow channel 311.

[0034] In the injection molding mold of this embodiment, the glue enters the gate groove 11 through the glue inlet channel 21, flows into the submerged gate flow channel 311 through the gate groove 11, and flows into the casting cavity 22 through the inner gate 200, forming an injection molded product 100 in the casting cavity 22. During demoulding, the relative appearance slide 2 slides and separates to the demoulding state to expose the product 100, and the lateral demoulding mechanism 3 moves along the bottom mold 1 to expose the gate 200 formed by the submerged gate flow channel 311 for demoulding, and then the connected product 100 and the gate 200 are ejected and demoulded as a whole. Since the product 100 and the gate 200 are always connected during the demoulding process, they will not break or separate, so there will be no problem of glue powder falling, which solves the problem of glue powder accumulation on the mold surface causing damage to the mold surface and affecting the injection molding quality of the product 100 during injection molding production, and realizes long-term and stable production of the product 100.

[0035] In this embodiment, the base mold 1 serves as the basis of the injection mold, and the gate groove 11 thereon is a strip-shaped groove arranged on the parting surface of the base mold 1. The notch of the gate groove 11 is sealed by the closed appearance slide 2. When the relative appearance slide 2 slides and separates to the demolding state, the notch of the gate groove 11 is exposed to facilitate the ejection and demolding of the gate 200 formed by injection molding in the gate groove 11.

[0036] The bottom of the appearance slide 2 is slidably arranged on the bottom mold 1 and is arranged opposite to each other along the two sides of the gate groove 11.

[0037] The glue inlet channel 21 is vertically arranged and communicated with the outside, serving as an inlet channel for the glue liquid.

[0038] The casting cavity 22 is an injection molding cavity for the product 100. The shape and size of the casting cavity 22 are consistent with the shape and size of the product 100 to be injection molded, and can be specifically set according to needs. In this embodiment, the casting cavity 22 is a cylindrical cavity, and the parting surface of the opposite appearance position 2 is provided with a semi-cylindrical cavity, and the semi-cylindrical cavities on both sides of the closed appearance position 2 cooperate to form a cylindrical cavity.

[0039] In this embodiment, two groups of opposite appearance slides 2 are provided on the bottom mold 1, and each group of opposite appearance slides 2 is provided with two casting cavities 22, so that two products 100 can be injection molded at the same time.

[0040] The submerged gate runner 311 is arranged inside the lateral demolding mechanism 3, and the lateral opening of the submerged gate runner 311 is sealed by the parting surface of the bottom mold 1. The submerged gate runner 311 is arranged below the gate groove 11. When the lateral demolding mechanism 3 moves for demolding, the gate 200 injection molded in the submerged gate runner 311 is maintained on the parting surface of the bottom mold 1 and remains connected with the gate 200 of the gate groove 11 and the product 100.

[0041] In this embodiment, a slide groove 12 is provided on the bottom mold 1 . The slide groove 12 is extended along the moving direction of the lateral demoulding mechanism 3 . The lateral demoulding mechanism 3 is movably disposed in the slide groove 12 .

[0042] By setting a slide groove 12 on the bottom mold 1, the slide groove 12 extends along the moving direction of the lateral demoulding mechanism 3 to limit the movement of the lateral demoulding mechanism 3, so that the lateral demoulding mechanism 3 always moves along the slide groove 12, thereby improving the movement accuracy.

[0043] Specifically, the slide groove 12 is a groove opened along the width direction of the bottom mold 1, so that the lateral demoulding mechanism 3 can move along the width direction of the bottom mold 1 for demoulding.

[0044] In this embodiment, the slide groove 12 is set through the edge of the bottom mold 1, and the length of the slide groove 12 along the width direction of the bottom mold 1 is greater than the length of the lateral demoulding mechanism 3, so that the lateral demoulding mechanism 3 can slide smoothly in the slide groove 12.

[0045] In terms of specific structure, in this embodiment, the lateral demoulding mechanism 3 includes a gate slide 31, which is movably arranged in the chute 12, and a submerged gate runner 311 is formed between the parting surface of the gate slide 31 and the parting surface of the bottom mold 1.

[0046] The gate guide 31 is in an elongated shape as a whole, and its length is smaller than that of the chute 12 .

[0047] Furthermore, the lateral demoulding mechanism 3 further includes a limiting assembly 32, which is connected to the bottom mold 1 and is used to limit the gate slider 31 in the chute 12. The provided limiting assembly 32 can limit the gate slider 31 to prevent the gate slider 31 from falling out of the chute 12 during the demoulding process.

[0048] Specifically, a side of the gate slider 31 is provided with a pressing edge 312, and the limiting assembly 32 is limited and abutted against the upper side of the pressing edge 312. By providing the pressing edge 312 on the side of the gate slider 31 and the limiting assembly 32 being limited and abutted against the upper side of the pressing edge 312, the abutment and limiting of the gate slider 31 can be achieved, and the gate slider 31 can be prevented from falling out of the chute 12.

[0049] In this embodiment, the limit assembly 32 includes a limit block 321 and a locking portion 322. The limit block 321 is fixedly arranged on the bottom mold 1. A portion of the limit block 321 extends into the slide groove 12 and abuts against the top of the pressure edge 312. The locking portion 322 is connected and fixed to the limit block 321 and the bottom mold 1.

[0050] The above arrangement fixes the limit block 321 to the bottom mold 1 via the locking portion 322 to ensure the connection stability of the limit block 321, and then a portion of the limit block 321 extends into the slide groove 12 and abuts against the top of the pressure edge 312, thereby realizing the abutment limit of the gate position 31.

[0051] In terms of the number of settings, in this embodiment, a pressure edge 312 is provided on both sides of the gate position 31 , and the pressure edges 312 on both sides are respectively abutted and limited by a limit block 321 , and each limit block 321 is locked and fixed by two locking parts 322 .

[0052] The locking portion 322 may be a locking screw. The stop block 321 and the bottom mold 1 are provided with corresponding threaded holes. The locking screw is connected to the threaded holes on the stop block 321 and the bottom mold 1, so that the stop block 321 and the bottom mold 1 can be threadedly fixed. Of course, in other embodiments, the locking portion 322 may also be a locking pin or a buckle, which can also realize the connection and fixation of the stop block 321 and the bottom mold 1.

[0053] The bottom mold 1 is also provided with an installation groove 13, which is connected to the slide groove 12. The limit block 321 is arranged in the installation groove 13. The installation groove 13 is convenient for the installation of the limit block 321, and can also position the installation of the limit block 321 to ensure the installation position and avoid displacement of the limit block 321 during use.

[0054] In this embodiment, the bottom wall of the mounting groove 13 is higher than the bottom wall of the slide groove 12, and the pressure edge 312 of the gate position 31 is set in the slide groove 12 and lower than the bottom wall of the mounting groove 13. When the limit block 321 is set in the mounting groove 13, a part of it extending into the slide groove 12 is just higher than the pressure edge 312, so as to abut and limit the upper side of the pressure edge 312.

[0055] In this embodiment, a side of the appearance slide 2 facing the bottom mold 1 is also provided with an avoidance groove 23, and the part of the lateral demoulding mechanism 3 away from the bottom mold 1 is arranged in the avoidance groove 23. The avoidance groove 23 plays an avoidance role in the installation of the lateral demoulding mechanism 3, and can also play a limiting and guiding role in the movement of the lateral demoulding mechanism 3.

[0056] The shape of the avoidance groove 23 matches the outer contour of the lateral demoulding mechanism 3 .

[0057] In this embodiment, the gate slider 31 is connected to the appearance slider 2, so that the gate slider 31 is driven to move relative to the bottom mold 1 by the sliding of the appearance slider 2. When the appearance slider 2 moves to demold, the gate slider 31 is driven to move to demold, and there is no need to move the gate slider 31 a second time, thereby improving the demolding efficiency.

[0058] Specifically, one of the gate slider 31 and the appearance slider 2 is provided with a connecting protrusion 313, and the other is provided with a connecting groove 24, and the connecting protrusion 313 is matched in the connecting groove 24. Through the matching of the connecting protrusion 313 and the connecting groove 24, the gate slider 31 and the appearance slider 2 are connected, so that the gate slider 31 is driven to move when the appearance slider 2 moves.

[0059] In this embodiment, the connection protrusion 313 is arranged on the top of the gate slider 31, and the connection groove 24 is arranged on the side of the appearance slider 2 facing the bottom mold 1. Of course, in other embodiments, the connection protrusion 313 can also be arranged on the appearance slider 2, and the connection groove 24 can be arranged on the gate slider 31.

[0060] Specifically, the connection groove 24 is disposed in the avoidance groove 23 , that is, the avoidance groove 23 is a shallow groove opened on the surface of the outer slide 2 , and the connection groove 24 is further opened and formed on the bottom wall of the avoidance groove 23 .

[0061] Since the moving demoulding stroke of the appearance slider 2 is generally large (about 20 mm), while the moving demoulding stroke of the gate slider 31 is generally small (about 5 mm), and the installation position of the gate slider 31 on the bottom mold 1 is limited, it cannot achieve synchronous stroke movement with the appearance slider 2. Therefore, in this embodiment, the connecting protrusion 313 is further movably arranged in the connecting groove 24, and the maximum moving distance of the connecting protrusion 313 in the connecting groove 24 is smaller than the moving demoulding stroke of the appearance slider 2. In this arrangement, when the appearance slider 2 moves to demould, the connecting protrusion 313 is first driven to move in the connecting groove 24, and the gate slider 31 does not move at this time. When the connecting protrusion 313 moves to the maximum distance in the connecting groove 24, the appearance slider 2 continues to move, which can drive the gate slider 31 to move relative to the bottom mold 1, so as to realize the exposed demoulding of the gate 200 of the submerged gate runner 311.

[0062] In this embodiment, the moving demolding stroke of the appearance slide 2 is set to 20 mm, and the maximum distance that the connecting protrusion 313 moves in the connecting groove 24 is 15 mm. Therefore, in the first 15 mm of the moving demolding process of the appearance slide 2, the connecting protrusion 313 moves in the connecting groove 24, while the gate slide 31 and the bottom mold 1 remain stationary. In the last 5 mm of the moving demolding process of the appearance slide 2, the gate slide 31 is driven to move synchronously by 5 mm relative to the bottom mold 1, thereby reducing the moving demolding stroke of the gate slide 31.

[0063] In addition to the above-mentioned arrangement, the present embodiment further includes an insert 5 and an ejection mechanism 4. The insert 5 is arranged on the bottom mold 1 and corresponds to the casting cavity 22 on the appearance slide 2. The gap between the insert 5 and the appearance slide 2 is the casting cavity 22, which is convenient for generating the injection molded product 100. The ejection mechanism 4 is used for ejecting the injection molded product 100 and the gate 200 so that the product 100 and the gate 200 are ejected and demolded from the bottom mold 1 synchronously.

[0064] Since the insert 5 and the ejection mechanism 4 are both prior arts in the art, they will not be described in detail in this embodiment.

[0065] To facilitate understanding of the injection molding mold of this embodiment, the use process is now introduced as follows:

[0066] Injection molding of product 100: the relative appearance slides 2 are closed to a pouring state, and the glue enters the gate groove 11 through the glue inlet runner 21, flows into the submerged gate runner 311 through the gate groove 11, and flows into the pouring cavity 22 through the inner gate 200, forming the injection molded product 100 in the pouring cavity 22;

[0067] Demolding of product 100: the relative appearance slide 2 slides and separates to the demolding state, so that the product 100 is exposed on the insert 5. When the demolding stroke of the appearance slide 2 is greater than 15 mm, the gate slide 31 is driven to move along the bottom mold 1, so that the gate 200 formed by the submerged gate runner 311 is exposed and demolded, and then the connected product 100 and the gate 200 are exposed on the bottom mold 1 as a whole;

[0068] Product 100 is ejected and demolded: the connected product 100 and the gate 200 are ejected upward as a whole by the ejection mechanism 4 to make them leave the bottom mold 1. The product 100 and the gate 200 are taken out by a robot and placed in a fixture, and the gate 200 is cut off and separated to obtain a complete product 100.

[0069] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An injection molding mold, characterized in that: include: A bottom mold (1), wherein a parting surface of the bottom mold (1) is provided with a gate groove (11); The appearance slide (2) is relatively slidably arranged on the bottom mold (1), the appearance slide (2) has a closed casting state and a separated demoulding state, and the parting surface of the appearance slide (2) cooperates to form a glue inlet flow channel (21) and a casting cavity (22), and the glue inlet flow channel (21) is connected to the casting cavity (22) through the gate groove (11); A lateral demoulding mechanism (3) is movably arranged between the bottom mold (1) and the appearance slide (2); the parting surface of the lateral demoulding mechanism (3) cooperates with the parting surface of the bottom mold (1) to form a submerged gate runner (311); the gate groove (11) is connected to the inner gate of the casting cavity (22) through the submerged gate runner (311).

2. The injection molding die according to claim 1, characterized in that: The bottom mold (1) is provided with a slide groove (12), the slide groove (12) is extended along the moving direction of the lateral demoulding mechanism (3), and the lateral demoulding mechanism (3) is movably arranged in the slide groove (12).

3. The injection molding die according to claim 2, characterized in that: The lateral demoulding mechanism (3) comprises a gate slide (31), the gate slide (31) is movably arranged in the chute (12), and the submerged gate runner (311) is formed between the parting surface of the gate slide (31) and the parting surface of the bottom mold (1).

4. The injection molding die according to claim 3, characterized in that: The lateral demoulding mechanism (3) further comprises a limiting assembly (32), wherein the limiting assembly (32) is connected to the bottom mold (1) and is used to limit the gate position (31) within the chute (12).

5. The injection molding die according to claim 4, characterized in that: A pressing edge (312) is extended from the side of the gate row (31), and the limiting component (32) is limitedly abutted against the upper side of the pressing edge (312).

6. The injection molding die according to claim 5, characterized in that: The limiting component (32) comprises: A limit block (321) is fixedly arranged on the bottom mold (1), and a portion of the limit block (321) extends into the slide groove (12) and abuts against the upper side of the pressing edge (312); And / or, the locking portion (322) is connected and fixed to both the limit block (321) and the bottom mold (1).

7. The injection molding die according to claim 6, characterized in that: The bottom mold (1) is also provided with a mounting groove (13), the mounting groove (13) is connected to the slide groove (12), and the limit block (321) is arranged in the mounting groove (13).

8. The injection molding die according to any one of claims 3 to 7, characterized in that: The gate slide (31) is connected to the exterior slide (2) so that the gate slide (31) can be driven to move relative to the bottom mold (1) by the sliding of the exterior slide (2).

9. The injection molding die according to claim 8, characterized in that: One of the gate slider (31) and the appearance slider (2) is provided with a connecting protrusion (313), and the other is provided with a connecting groove (24), and the connecting protrusion (313) is fitted in the connecting groove (24).

10. The injection molding die according to claim 9, characterized in that: The connecting protrusion (313) is movably arranged in the connecting groove (24), and the maximum distance that the connecting protrusion (313) moves in the connecting groove (24) is smaller than the moving demoulding stroke of the appearance slide (2).

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