Pouring gate capable of avoiding die-casting deformation of product

Abstract

The utility model relates to the technical field of die-casting processing equipment, and discloses a pouring gate capable of avoiding die-casting deformation of a product, which comprises a pouring gate shell, a material injection port is fixedly arranged at the top of one end of the pouring gate shell, a pouring gate is fixedly arranged on the outer wall of one side, far away from the material injection port, of the pouring gate shell, and a transverse pouring gate is arranged in the pouring gate shell. An arc-shaped guide belt is arranged on the inner wall of one side of the center of the transverse pouring gate, an inner pouring gate is formed in the inner wall of the pouring gate, and a guide protruding edge is fixedly installed on the arc-shaped inner wall of the inner pouring gate. The pressure intensity of the top space of the ingate is relatively low due to the arrangement of the guide ribs in the ingate, so that air in the cavity can be discharged through a gap of the top space of the ingate in the casting process, and the discharging effect of the air in the cavity of the die-casting die is guaranteed; and the situation that cavities or flashes occur in a cast workpiece is avoided, and the production efficiency of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to die casting processing equipment technical field, concretely is a runner that avoids product die casting deformation. BACKGROUND

[0002] Reasonable pouring system in injection molding process can effectively improve fiber orientation and reduce the warpage of plastic parts, but more gates are not better, and the comb runner is a common design form of pouring system in die casting process, which is composed of multiple parallel arranged inner gates, and the overall shape is similar to the comb tooth distribution. This design disperses the alloy liquid flow, reduces the flow of a single gate, and reduces the impact on the cavity.

[0003] However, in the process of casting, after the alloy liquid is injected into the comb runner, the alloy liquid flows into the cavity of the mold under the guidance of the gate. However, the alloy liquid also needs to discharge the air in the mold cavity during the casting process. This part of air is generally pushed by the alloy liquid and located at the upper part of the cavity. The equal size cross section at the gate makes the gate easily blocked by the alloy liquid, thereby reducing the air discharge efficiency in the cavity and the quality of the finished product of the cast workpiece. In view of this, we propose a runner that avoids product die casting deformation. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a runner that avoids product die casting deformation to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a runner that avoids product die casting deformation, comprising a runner shell, an injection port is fixedly installed at the top of one end of the runner shell, a gate is fixedly installed on the outer wall of the side of the runner shell away from the injection port, a cross runner is formed in the inside of the runner shell, an arc-shaped guide belt is arranged on the inner wall of the center side of the cross runner, an inner runner is formed in the inner wall of the gate, a guide protruding rib is fixedly installed on the arc-shaped inner wall of the inner runner, a guide strip is fixedly installed on the inner surface of the end of the inner runner away from the cross runner, an arc-shaped groove is formed in the outer wall of the side of the guide strip close to the inner runner, and a overflow port is formed in the inner wall of the arc-shaped groove.

[0006] Preferably, the edges of the connection between the inner runner and the cross runner are rounded to reduce the collision of the alloy liquid at the connection between the cross runner and the inner runner.

[0007] Preferably, the number of guide protruding ribs is set to multiple groups, and the number of guide protruding ribs in each group is set to two. The two guide protruding ribs are mirror image distributed on the inner walls on the left and right sides of the inner runner. Meanwhile, the multiple groups of guide protruding ribs are equidistantly arranged on the inner surface of the side of the inner runner away from the cross runner.

[0008] Preferably, the outer diameter of the guide ribs is arranged to gradually decrease from the inner gate to the outside, so that the center of the inner gate is narrower, and according to the Venturi principle, the alloy liquid in the inner gate flows fastest at this position.

[0009] Preferably, the guide rib comprises a wide diameter end and a narrow diameter end, and the wide diameter end is arranged on one side of the top inner surface of the inner gate, so that the narrowest part of the inner gate is arranged in an upper narrow and lower wide manner, so that the alloy liquid at the bottom of the inner gate flows faster.

[0010] Preferably, the number of guide strips is two groups, and the two groups of guide strips are mirror arranged on the inner surfaces of the left and right sides of the end of the inner gate.

[0011] Preferably, the arc-shaped groove is arranged in a wide-to-narrow manner near the inner wall of the inner gate, so that part of the alloy liquid flowing out of the inner gate will contact the arc-shaped groove of the guide strip when it spreads outward, and the alloy liquid will move in the backflow direction through the guidance of the arc-shaped groove.

[0012] Compared with the prior art, the present application provides a runner for avoiding product die casting deformation, which has the following advantages:

[0013] 1. The runner for avoiding product die casting deformation, by arranging guide ribs in the inner gate, the pressure of the space at the top of the inner gate is relatively low, so that the air in the cavity of the die casting mold can be discharged through the gap at the top of the inner gate during the casting process, thereby ensuring the air discharge effect in the cavity of the die casting mold, avoiding the occurrence of air holes or flash in the cast workpiece, and improving the production efficiency of the device.

[0014] 2. The runner for avoiding product die casting deformation, by arranging guide strips and arc-shaped grooves on the side surfaces of the guide strips, part of the alloy liquid flowing out of the inner gate will contact the arc-shaped groove of the guide strip when it spreads outward, and the alloy liquid will move in the backflow direction through the guidance of the arc-shaped groove, thereby generating a horizontal disturbance to the alloy liquid about to flow out of the inner gate, so as to realize pre-casting on the space near the gate of the die casting mold, and the subsequent alloy liquid can be quickly formed when backfilling, thereby avoiding the uneven material of the formed workpiece due to different metal liquid filling periods. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the gate structure of the utility model;

[0018] Figure 4 It is the guide strip structure schematic view of the utility model.

[0019] In the figure: 1, the runner shell; 2, injection port; 3, gate; 4, cross runner; 5, arc guide belt; 6, inner runner; 7, guide ridge; 8, guide strip; 9, arc slot; 10, overflow port. Specific embodiments

[0020] As Figures 1-4 Indicated, the utility model provides a kind of technical scheme: a runner to avoid product die casting deformation, including runner shell 1, the top of one end of runner shell 1 is fixedly installed with injection port 2, runner shell 1 is fixedly installed with gate 3 on the outer wall of side away from injection port 2, the inside of runner shell 1 is set with cross runner 4, the inner wall of the center side of cross runner 4 is provided with arc guide belt 5, the inner wall of gate 3 is set with inner runner 6, arc inner wall of inner runner 6 is fixedly installed with guide ridge 7, inner runner 6 is fixedly installed with guide strip 8 on the inner surface of end away from cross runner 4, arc slot 9 is set in the outer wall of guide strip 8 side close to inner runner 6, overflow port 10 is set in the inner wall of arc slot 9.

[0021] In an embodiment of the utility model, the number of gate 3 is set with multiple groups, and multiple groups of gate 3 are mirror set on the left and right sides of the vertical central axis of cross runner 4, and gate 3 is all set as two ends wide and center narrow, so that alloy liquid flowing along the surface of inner runner 6 can have relatively larger diffusion range when flowing out from the end of inner runner 6, so that alloy liquid can more fully fill the cavity of die casting mold, to speed up the forming of die casting mold, improve the processing efficiency of device.

[0022] In addition, the edge between inner runner 6 and cross runner 4 is all set as fillet, to reduce the collision of alloy liquid at the connecting place between cross runner 4 and inner runner 6, to assist multiple inner runners 6 to realize partition filling, to ensure that alloy liquid is as evenly as possible delivered to each inner runner 6, the alloy liquid coverage in the cavity of die casting mold is as large as possible, and the flow of alloy liquid is more stable, to improve filling quality.

[0023] In the embodiment of the utility model, the number of guide ribs 7 is provided with multiple groups, and the number of guide ribs 7 of each group is provided with two, two guide ribs 7 are mirror distributed on the left and right two sides of the inner wall of the inner runner 6, and multiple guide ribs 7 are equidistantly arranged on the inner surface of the side of the inner runner 6 away from the cross runner 4, specifically, the outer diameter of the guide rib 7 is gradually reduced from the inner runner 6 to the outside, so that the center of the inner runner 6 is narrower, according to the Venturi principle, the alloy liquid at this position of the inner runner 6 flows fastest, so that the alloy liquid flowing through this position is subjected to a certain acceleration effect, and the opening of the outer side of the inner runner 6 is gradually widened, so that the filling speed of the alloy liquid in the cavity of the die casting mold is improved, further, the guide rib 7 comprises a wide diameter end and a narrow diameter end, the wide diameter end is arranged on one side of the top inner surface of the inner runner 6, so that the narrowest part of the center of the inner runner 6 is arranged in an upper narrow and lower wide shape, so that the alloy liquid at the bottom of the inner runner 6 flows faster, relatively, the pressure of the space at the top of the inner runner 6 is relatively low, so that the air in the cavity during the casting process can be discharged through the gap of the space at the top of the inner runner 6, so as to ensure the discharge effect of the air in the cavity of the die casting mold, avoid the situation that the inside of the cast workpiece appears hollow or flash, and improve the production efficiency of the device.

[0024] It is worth noting that the number of guide strips 8 is provided with two groups, and the two groups of guide strips 8 are mirror arranged on the left and right inner surfaces of the end of the inner runner 6, and the arc-shaped groove 9 is arranged in a wide side close to the inner wall of the inner runner 6 and a narrow side away from the inner wall of the inner runner 6, so that part of the alloy liquid flowing out of the inner runner 6 will contact the arc-shaped groove 9 of the guide strip 8 when diffusing outward, and the alloy liquid will move in the backflow direction through the guidance of the arc-shaped groove 9, so as to generate a horizontal disturbance to the alloy liquid about to flow out of the inner runner 6, so as to realize pre-casting on the space of the die casting mold close to the sprue 3, and the alloy liquid can be quickly formed when backfilling, so as to avoid the situation that the formed workpiece appears uneven in material due to different metal liquid filling periods.

[0025] At the same time, the number of overflow ports 10 is provided with multiple groups, and the multiple groups of overflow ports 10 are evenly distributed in a linear array on the inner wall of the guide strip 8, so that the alloy liquid flowing through the guide strip 8 will not be completely blocked, and part of the alloy liquid can still flow out through the overflow port 10 and towards the edge of the cavity of the die casting mold, so as to avoid interfering with the metal liquid filling efficiency of the cavity of the die casting mold.

[0026] In the utility model, when using, butt joint installation is carried out to the pouring gate 3 and the pouring gate of the die casting mold, after butt joint is completed, alloy liquid is injected through the injection port 2, the alloy liquid enters into the cavity of the die casting mold through the cross runner 4 and the ingate 6, through the setting of multiple groups of pouring gates 3, the partition filling is implemented, it can guarantee that the alloy liquid is as evenly as possible delivered to each ingate 6, the alloy liquid entering the cavity covers as large as possible, and the flow is stable, the filling quality is improved, and through the setting of the guide convex rib 7 in the ingate 6, the pressure of the top space of the ingate 6 is relatively low, so that the air in the cavity during the pouring process can be discharged through the gap of the top space of the ingate 6, thereby guaranteeing the discharging effect of the air in the cavity of the die casting mold, avoiding the situation that the inside of the poured workpiece appears cavity or flash, and improving the production efficiency of the device.

[0027] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to the general skilled in the technical field. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A runner for avoiding deformation of a product during die casting, comprising a runner shell (1), one end top of the runner shell (1) being fixedly provided with a feeding opening (2), and a runner gate (3) being fixedly provided on an outer wall of a side of the runner shell (1) away from the feeding opening (2), characterized in that: The inside of the gate shell (1) is provided with a cross runner (4), the center side inner wall of the cross runner (4) is provided with an arc-shaped guide belt (5), the inner wall of the gate (3) is provided with an inner runner (6), the arc-shaped inner wall of the inner runner (6) is fixedly installed with a guide rib (7), the inner surface of the end of the inner runner (6) away from the cross runner (4) is fixedly installed with a guide strip (8), the outer wall of the side of the guide strip (8) close to the inner runner (6) is provided with an arc-shaped groove (9), and the inner wall of the arc-shaped groove (9) is provided with an overflow port (10).

2. A runner according to claim 1, wherein: The edges of the connection between the inner runner (6) and the cross runner (4) are all provided with round corners.

3. A runner according to claim 1, wherein: The number of guide ribs (7) is provided with multiple groups, and the number of guide ribs (7) in each group is provided with two, and the two guide ribs (7) are mirror distributed on the left and right inner walls of the inner runner (6), and the multiple groups of guide ribs (7) are equally spaced on the inner surface of the side of the inner runner (6) away from the cross runner (4).

4. A runner according to claim 1, wherein: The outer diameter of the guide rib (7) is gradually reduced from the inside to the outside of the inner runner (6).

5. A runner according to claim 1, wherein: The guide rib (7) comprises a wide diameter end and a narrow diameter end, the wide diameter end is arranged on one side of the top inner surface of the inner runner (6), so that the narrowest part of the inner runner (6) is arranged in an upper narrow and lower wide shape.

6. A runner for avoiding deformation of a product in die casting according to claim 1, characterized in that: The number of guide strips (8) is provided with two groups, and the two groups of guide strips (8) are mirror arranged on the left and right inner surfaces of the end of the inner runner (6).

7. A runner for avoiding deformation of a product in die casting according to claim 1, characterized in that: The arc-shaped groove (9) is arranged in a wide side close to the inner wall of the inner runner (6) and a narrow side away from the inner wall of the inner runner (6).

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