A super exhaust block used in large die casting molds

Abstract

The present invention provides a super exhaust block used in a large die-casting mold, which can achieve the purpose of continuous production and improve the yield rate, and reduce the mold cost and production cost. A plurality of first concave-convex grooves are arranged in the central area of ​​the surface of the fixed mold exhaust block facing the movable mold exhaust block, and a plurality of second concave-convex grooves are arranged in the area corresponding to the first concave-convex grooves on the surface of the movable mold exhaust block facing the fixed mold exhaust block. The first concave-convex groove and the second concave-convex groove are combined to form an exhaust gap cavity, one end of the exhaust gap cavity is connected to an air inlet channel, and the other end of the exhaust gap cavity is connected to an air outlet channel. A plurality of fixed row ejector pin through holes are arranged in the area corresponding to the first concave-convex groove in the thickness direction of the fixed mold exhaust block, and a fixed row ejector pin is arranged in each fixed row ejector pin through hole, and a fixed row spring is arranged at the top of the fixed row ejector pin, and the fixed row spring supports the top of the fixed row ejector pin, and the bottom end of the fixed row ejector pin is arranged toward the exhaust gap cavity.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting mold structures, in particular to a super exhaust block used in a large die-casting mold. Background Art

[0002] A large number of centralized exhaust blocks are the most common structure in die casting molds. However, the large number of centralized exhaust blocks commonly used in actual production have some defects.

[0003] In the production of large molds, sometimes we need to arrange an exhaust volume much larger than that of a general exhaust block in a limited position, usually designed for vacuum exhaust; sometimes we place the exhaust block outside the mold to save mold size or meet the need for quick replacement of the exhaust block.

[0004] The purchase cost and maintenance cost of the vacuum exhaust block are much higher than those of the general exhaust block. The complex exhaust block structure and appearance in the prior art may cause mold sticking, which sometimes affects continuous production. More often, mold sticking may cause exhaust blockage, which may reduce the actual exhaust area and affect the exhaust effect and internal quality of the product. Summary of the invention

[0005] In view of the above problems, the present invention provides a super exhaust block used in a large die-casting mold, which can achieve the purpose of continuous production and improve the yield rate, and reduce the mold cost and production cost.

[0006] A super exhaust block used in a large die-casting mold, characterized in that it comprises a fixed mold exhaust block and a movable mold exhaust block, a plurality of first concave-convex grooves are arranged in the central area of ​​the surface of the fixed mold exhaust block facing the movable mold exhaust block, a plurality of second concave-convex grooves are arranged in the area corresponding to the first concave-convex grooves on the surface of the movable mold exhaust block facing the fixed mold exhaust block, the first concave-convex grooves and the second concave-convex grooves are combined to form an exhaust gap cavity, one end of the exhaust gap cavity is connected with an air inlet channel, and the other end of the exhaust gap cavity is connected with an air outlet channel, a plurality of fixed row ejector pin through holes are arranged in the area corresponding to the first concave-convex grooves in the thickness direction of the fixed mold exhaust block, a fixed row ejector pin is arranged in each of the fixed row ejector pin through holes, a fixed row spring is arranged on the top of the fixed row ejector pin, the fixed row spring supports the top of the fixed row ejector pin, the bottom end of the fixed row ejector pin is arranged toward the exhaust gap cavity, and the bottom of the fixed row ejector pin is arranged deep into the exhaust gap cavity in an unstressed state;

[0007] A plurality of movable row ejector pin through holes are arranged in the region corresponding to the second concave-convex groove in the thickness direction of the movable mold exhaust block, a movable row ejector pin is arranged in each of the movable row ejector pin through holes, a movable row spring is arranged at the bottom of the movable row ejector pin, the movable row spring supports the bottom of the movable row ejector pin, the top of the movable row ejector pin is arranged toward the exhaust gap cavity, the top of the movable row ejector pin is convex on the surface of the second concave-convex groove at the corresponding position in the demolding state, and the top of the movable row ejector pin is flush with the surface of the second concave-convex groove at the corresponding position in the closing state.

[0008] It is further characterized in that: the first concave-convex groove specifically includes a plurality of first grooves and first protrusions arranged at intervals, the second concave-convex groove specifically includes a plurality of second grooves and second protrusions arranged at intervals, the first protrusion is arranged in the shape of the second groove at the corresponding position, and the second protrusion is arranged in the shape of the first groove at the corresponding position, which makes the exhaust cross-sectional area of ​​the entire exhaust gap cavity relatively larger, ensuring fast and reliable exhaust;

[0009] Each of the fixed row ejector pin through holes comprises a first small diameter portion and a second large diameter portion, the first small diameter portion is arranged close to the first concave-convex groove, the fixed row spring is installed in the second large diameter portion, the fixed row ejector pin comprises a lower ejector pin portion, a middle first guide boss, and an upper force application portion, the lower ejector pin portion is inserted in the first small diameter portion, the diameter of the middle first guide boss is larger than the first small diameter portion and smaller than the second large diameter portion, the middle first guide boss is located in the second large diameter portion, and the fixed row spring is sleeved on the upper force application portion;

[0010] The corresponding area of ​​the upper surface of the fixed mold exhaust block in the thickness direction corresponding to the fixed row ejector pin is concave to form a first mounting groove, the fixed row pressure plate is embedded in the first mounting groove and fixed to the fixed mold exhaust block by the fixed row screws, and the top of each fixed row spring is respectively mounted on the corresponding position of the lower surface of the corresponding fixed row pressure plate;

[0011] Each of the movable row ejector pin through-holes includes a third small diameter portion and a fourth large diameter portion, the third small diameter portion is arranged close to the second concave-convex groove, the movable row spring is installed in the fourth large diameter portion, the movable row ejector includes an upper ejector pin portion, a middle second guide boss, and a lower force application portion, the upper ejector pin portion is inserted in the third small diameter portion, the diameter of the middle second guide boss is larger than the third small diameter portion and smaller than the fourth large diameter portion, the middle second guide boss is located in the fourth large diameter portion, and the movable row spring is sleeved on the lower force application portion;

[0012] The corresponding area of ​​the lower surface of the movable mold exhaust block in the thickness direction corresponding to the movable row ejector pin is concave to form a second mounting groove, the movable row pressure plate is embedded in the second mounting groove and fixed to the movable mold exhaust block by the movable row screw, and the bottom of each movable row spring is respectively mounted on the corresponding position of the upper surface of the corresponding movable row pressure plate;

[0013] A waste slag anti-flying plate is fixedly arranged at the end surface position of the movable mold exhaust block corresponding to the air outlet channel, and the waste slag anti-flying plate is fixedly arranged on the movable mold exhaust block by an anti-flying plate screw, and the height direction of the waste slag anti-flying plate is raised to a position where the exhaust gap cavity is completely covered in the mold closing state;

[0014] The end side of the movable mold exhaust block is also provided with a movable row fixing screw, and the end side of the fixed mold exhaust block is provided with a fixed row fixing screw. The movable mold fixing screw and the fixed mold fixing screw are used for connecting the movable mold exhaust block, the fixed mold exhaust block and the mold.

[0015] After adopting the structure of the present invention, when the mold is opened, the ejection force of the fixed mold spring of the fixed mold ejector pin is greater than the ejection force of the movable mold spring, and the exhaust part of the product (see Figure 3 ) will move with the movable mold; as the fixed mold ejector moves to the limit position, the exhaust part of the product detaches from the fixed mold exhaust block; the movable mold ejector ejects the exhaust part of the product about 8mm under the action of the movable mold spring, and then leaves the mold with the product under the ejection action of the mold; and since a plurality of first concave-convex grooves are provided in the central area of ​​the surface of the fixed mold exhaust block facing the movable mold exhaust block, a plurality of second concave-convex grooves are provided in the area corresponding to the first concave-convex grooves on the surface of the movable mold exhaust block facing the fixed mold exhaust block, the first concave-convex grooves and the second concave-convex grooves are combined to form an exhaust gap cavity, and the exhaust gap cavity is formed by the first concave-convex grooves and the second concave-convex grooves being combined and matched with each other, which increases the exhaust cross-sectional area compared with the previous structure of a whole row of continuous concave-convex structures, thereby increasing the exhaust efficiency; it can achieve the purpose of continuous production and improving the yield rate, and reduces the mold cost and production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a three-dimensional cross-sectional exploded view of the present invention;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention in the mold closing state;

[0018] Figure 3 It is a schematic diagram of the main view structure of the present invention in the mold closing state;

[0019] Figure 4 It is a schematic diagram of the main view structure of the present invention in the demoulding state;

[0020] Figure 5 It is a structural schematic diagram of the first concave-convex groove of the fixed mold exhaust block of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the second concave-convex groove of the movable mold exhaust block of the present invention;

[0022] The names corresponding to the serial numbers in the figure are as follows:

[0023] Fixed mold exhaust block 1, movable mold exhaust block 2, first concave-convex groove 3, first groove 31, first protrusion 32, second concave-convex groove 4, second groove 41, second protrusion 42, exhaust gap cavity 5, air inlet channel 6, air outlet channel 7, fixed row ejector pin through hole 8, first small diameter part 81, second large diameter part 82, fixed row ejector pin 9, lower ejector pin part 91, middle first guide boss 92, upper force application part 93, fixed row spring 10, movable row ejector pin through hole 11, The third small diameter part 111, the fourth large diameter part 112, the dynamic row ejector 12, the upper ejector part 121, the middle second guide boss 122, the lower force-applying part 123, the dynamic row spring 13, the first mounting groove 14, the fixed row pressure plate 15, the fixed row screw 16, the second mounting groove 17, the dynamic row pressure plate 18, the dynamic row screw 19, the waste slag anti-flying plate 20, the anti-flying plate screw 21, the fixed mold fixing screw 22, the dynamic row fixing screw 23, and the product exhaust part 24. DETAILED DESCRIPTION

[0024] A super exhaust block used in large die casting molds, see Figure 1-Figure 6 :It comprises a fixed mold exhaust block 1 and a movable mold exhaust block 2. A plurality of first concave-convex grooves 3 are arranged in the central area of ​​the surface of the fixed mold exhaust block 1 facing the movable mold exhaust block 2. A plurality of second concave-convex grooves 4 are arranged in the area corresponding to the first concave-convex grooves 3 on the surface of the movable mold exhaust block 2 facing the fixed mold exhaust block 1. The first concave-convex grooves 3 and the second concave-convex grooves 4 are combined to form an exhaust gap cavity 5. An air inlet channel 6 is connected to one end of the exhaust gap cavity 5, and an air outlet channel 7 is connected to the other end of the exhaust gap cavity 5. A plurality of fixed row ejector pin through holes 8 are arranged in the area corresponding to the first concave-convex grooves 3 in the thickness direction of the fixed mold exhaust block 1. A fixed row ejector pin 9 is arranged in each fixed row ejector pin through hole 8. A fixed row spring 10 is arranged on the top of the fixed row ejector pin 9. The fixed row spring 10 supports the top of the fixed row ejector pin 9. The bottom end of the fixed row ejector pin 9 is arranged toward the exhaust gap cavity 5. The bottom of the fixed row ejector pin 9 is arranged deep into the exhaust gap cavity 5 in an unstressed state.

[0025] A plurality of movable row ejector pin through holes 11 are arranged in the area corresponding to the second concave-convex groove 4 in the thickness direction of the movable mold exhaust block 2, a movable row ejector pin 12 is arranged in each movable row ejector pin through hole 11, a movable row spring 13 is arranged at the bottom of the movable row ejector pin 12, the movable row spring 13 supports the bottom of the movable row ejector pin 12, the top of the movable row ejector pin 12 is arranged toward the exhaust gap cavity 5, the top of the movable row ejector pin 12 is convex on the surface of the second concave-convex groove 4 at the corresponding position in the demolding state, and the top of the movable row ejector pin 12 is flush with the surface of the second concave-convex groove 4 at the corresponding position in the mold closing state.

[0026] The first concave-convex groove 3 specifically includes a plurality of first grooves 31 and first protrusions 32 arranged at intervals, and the second concave-convex groove 4 specifically includes a plurality of second grooves 41 and second protrusions 42 arranged at intervals, the first protrusion 32 is arranged in the shape of the second groove 41 at the corresponding position, and the second protrusion 42 is arranged in the shape of the first groove 31 at the corresponding position, which makes the exhaust cross-sectional area of ​​the entire exhaust gap cavity 5 relatively larger, ensuring fast and reliable exhaust;

[0027] Each row-fixing ejector pin through hole 8 includes a first small diameter portion 81 and a second large diameter portion 82. The first small diameter portion 81 is arranged close to the first concave-convex groove 3. A row-fixing spring 10 is installed in the second large diameter portion 82. The row-fixing ejector pin 9 includes a lower ejector pin portion 91, a middle first guide boss 92, and an upper force-applying portion 93. The lower ejector pin portion 91 is inserted into the first small diameter portion 81. The diameter of the middle first guide boss 92 is larger than the first small diameter portion 81 and smaller than the second large diameter portion 82. The middle first guide boss 92 is located in the second large diameter portion 82. The row-fixing spring 10 is sleeved on the upper force-applying portion 93.

[0028] The corresponding area of ​​the upper surface of the fixed mold exhaust block 1 in the thickness direction corresponding to the fixed row ejector pin 9 is concave to form a first mounting groove 14, the fixed row pressure plate 15 is embedded in the first mounting groove 14, and is fixed to the fixed mold exhaust block 1 through the fixed row screws 16, and the top of each fixed row spring 10 is respectively mounted on the corresponding position of the lower surface of the corresponding fixed row pressure plate 15;

[0029] Each dynamic row ejector pin through hole 11 includes a third small diameter portion 111 and a fourth large diameter portion 112. The third small diameter portion 111 is arranged close to the second concave-convex groove 4. A dynamic row spring 13 is installed in the fourth large diameter portion 112. The dynamic row ejector pin 12 includes an upper ejector pin portion 121, a middle second guide boss 122, and a lower force application portion 123. The upper ejector pin portion 121 is inserted into the third small diameter portion 111. The diameter of the middle second guide boss 122 is larger than the third small diameter portion 111 and smaller than the fourth large diameter portion 112. The middle second guide boss 122 is located in the fourth large diameter portion 112. The dynamic row spring 13 is sleeved on the lower force application portion 123.

[0030] The corresponding area of ​​the lower surface of the movable mold exhaust block 2 in the thickness direction corresponding to the movable row ejector pin 12 is concave to form a second mounting groove 17, the movable row pressure plate 18 is embedded in the second mounting groove 17, and is fixed to the movable mold exhaust block 2 by the movable row screw 19, and the bottom of each movable row spring 13 is respectively mounted on the corresponding position of the upper surface of the corresponding movable row pressure plate 18;

[0031] A waste slag anti-flying plate 20 is fixedly provided at the end surface position of the movable mold exhaust block 2 corresponding to the air outlet channel 7. The waste slag anti-flying plate 20 is fixedly provided on the movable mold exhaust block 2 by an anti-flying plate screw 21. The height direction of the waste slag anti-flying plate 20 is raised to a position where the exhaust gap cavity 5 is completely covered in the mold closing state.

[0032] The end side of the movable mold exhaust block 2 is also provided with a movable row fixing screw 23, and the end side of the fixed mold exhaust block 1 is provided with a fixed row fixing screw 22. The movable mold fixing screw 21 and the fixed mold fixing screw 22 are used for connecting the movable mold exhaust block 2, the fixed mold exhaust block 1 and the mold.

[0033] In a specific embodiment, two fixed-row ejector pin through holes 8 are respectively provided on both sides of the first concave-convex groove 3 in the thickness direction of the fixed mold exhaust block 1, and a fixed-row ejector pin 9 is provided in each fixed-row ejector pin through hole 8, and a fixed-row pressure plate 15 is respectively provided on the corresponding side of the upper surface of each fixed mold exhaust block 1; two dynamic-row ejector pin through holes 11 are respectively provided on both sides of the second concave-convex groove 4 in the thickness direction of the movable mold exhaust block 2, and a dynamic-row ejector pin 12 is provided in each dynamic-row ejector pin through hole 11, and a dynamic-row pressure plate 18 is respectively provided on the corresponding side of the upper surface of each movable mold exhaust block 2, and the corresponding positions of the dynamic-row ejector pins 12 and the fixed-row ejector pins 9 are in a corresponding upper and lower position relationship, and they respectively act on the upper surface and lower surface of the corresponding positions of the exhaust part 24 of the product.

[0034] Its working principle is as follows: When the mold is opened, the ejection force of the fixed mold spring of the fixed mold ejector pin is greater than the ejection force of the movable mold spring, and the exhaust part 24 (see Figure 4 ) will move with the movable mold; as the fixed mold ejector moves to the limit position, the exhaust part of the product detaches from the fixed mold exhaust block; the movable mold ejector ejects the exhaust part of the product about 8mm under the action of the movable mold spring, and then leaves the mold with the product under the ejection action of the mold; and since a plurality of first concave-convex grooves are provided in the central area of ​​the surface of the fixed mold exhaust block facing the movable mold exhaust block, a plurality of second concave-convex grooves are provided in the area corresponding to the first concave-convex grooves on the surface of the movable mold exhaust block facing the fixed mold exhaust block, the first concave-convex grooves and the second concave-convex grooves are combined to form an exhaust gap cavity, and the exhaust gap cavity is formed by the first concave-convex grooves and the second concave-convex grooves being combined and matched with each other, which increases the exhaust cross-sectional area compared with the previous structure of a whole row of continuous concave-convex structures, thereby increasing the exhaust efficiency; it can achieve the purpose of continuous production and improving the yield rate, and reduces the mold cost and production cost.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A super exhaust block used in a large die casting mold, characterized in that: It comprises a fixed mold exhaust block and a movable mold exhaust block, wherein a plurality of first concave-convex grooves are arranged in the central area of ​​the surface of the fixed mold exhaust block facing the movable mold exhaust block, and a plurality of second concave-convex grooves are arranged in the area corresponding to the first concave-convex grooves on the surface of the movable mold exhaust block facing the fixed mold exhaust block, wherein the first concave-convex grooves and the second concave-convex grooves are combined to form an exhaust gap cavity, wherein one end of the exhaust gap cavity is connected with an air inlet channel, and the other end of the exhaust gap cavity is connected with an air outlet channel, and a plurality of fixed-row ejector pin through holes are arranged in the area corresponding to the first concave-convex grooves in the thickness direction of the fixed mold exhaust block, wherein a fixed-row ejector pin is arranged in each of the fixed-row ejector pin through holes, and a fixed-row spring is arranged on the top of the fixed-row ejector pin, wherein the fixed-row spring supports the top of the fixed-row ejector pin, and the bottom end of the fixed-row ejector pin is arranged toward the exhaust gap cavity, and the bottom of the fixed-row ejector pin is arranged deep into the exhaust gap cavity in an unstressed state; A plurality of movable row ejector pin through holes are arranged in the region corresponding to the second concave-convex groove in the thickness direction of the movable mold exhaust block, a movable row ejector pin is arranged in each movable row ejector pin through hole, a movable row spring is arranged at the bottom of the movable row ejector pin, the movable row spring supports the bottom of the movable row ejector pin, the top of the movable row ejector pin is arranged toward the exhaust gap cavity, the top of the movable row ejector pin is convex on the surface of the second concave-convex groove at the corresponding position in the demolding state, and the top of the movable row ejector pin is flush with the surface of the second concave-convex groove at the corresponding position in the mold closing state; The first concave-convex groove specifically includes a plurality of first concave grooves and first protrusions arranged at intervals, and the second concave-convex groove specifically includes a plurality of second concave grooves and second protrusions arranged at intervals, the first protrusion is arranged in the shape of the second concave groove at the corresponding position, and the second protrusion is arranged in the shape of the first concave groove at the corresponding position; The corresponding area of ​​the upper surface of the fixed mold exhaust block in the thickness direction corresponding to the fixed row ejector pins is concave to form a first mounting groove, the fixed row pressure plate is embedded in the first mounting groove and fixed to the fixed mold exhaust block by a fixed row screw, and the top of each of the fixed row springs is respectively mounted on the corresponding position of the lower surface of the corresponding fixed row pressure plate.

2. A super exhaust block for use in a large die casting mold as claimed in claim 1, characterized in that: Each of the fixed row ejector pin through holes includes a first small diameter portion and a second large diameter portion, the first small diameter portion is arranged close to the first concave-convex groove, the second large diameter portion is installed with the fixed row spring, the fixed row ejector includes a lower ejector pin portion, a middle first guide boss, and an upper force-applying portion, the lower ejector pin portion is inserted into the first small diameter portion, the diameter of the middle first guide boss is larger than the first small diameter portion and smaller than the second large diameter portion, the middle first guide boss is located in the second large diameter portion, and the fixed row spring is sleeved on the upper force-applying portion.

3. A super exhaust block for use in a large die casting mold as claimed in claim 1, characterized in that: Each of the movable row ejector pin through-holes includes a third small diameter portion and a fourth large diameter portion, the third small diameter portion is arranged close to the second concave-convex groove, the movable row spring is installed in the fourth large diameter portion, the movable row ejector includes an upper ejector pin portion, a middle second guide boss, and a lower force application portion, the upper ejector pin portion is inserted in the third small diameter portion, the diameter of the middle second guide boss is larger than the third small diameter portion and smaller than the fourth large diameter portion, the middle second guide boss is located in the fourth large diameter portion, and the movable row spring is sleeved on the lower force application portion.

4. A super exhaust block for use in a large die casting mold as claimed in claim 1, characterized in that: The corresponding area of ​​the lower surface of the movable mold exhaust block in the thickness direction corresponding to the movable ejector pin is concave to form a second mounting groove, the movable exhaust pressure plate is embedded in the second mounting groove and fixed to the movable mold exhaust block by a movable exhaust screw, and the bottom of each of the movable exhaust springs is respectively mounted on the corresponding position of the upper surface of the corresponding movable exhaust pressure plate.

5. A super exhaust block for use in a large die casting mold as claimed in claim 1, characterized in that: A waste slag anti-flying plate is fixedly provided on the end surface position of the movable mold exhaust block corresponding to the air outlet channel. The waste slag anti-flying plate is fixed to the movable mold exhaust block by anti-flying plate screws. The height direction of the waste slag anti-flying plate is raised to a position that completely covers the exhaust gap cavity in the mold closing state.

6. A super exhaust block for use in a large die casting mold as claimed in claim 1, characterized in that: The end side of the movable mold exhaust block is also provided with a movable mold fixing screw, and the end side of the fixed mold exhaust block is provided with a fixed mold fixing screw. The movable mold fixing screw and the fixed mold fixing screw are used for connecting the movable mold exhaust block, the fixed mold exhaust block and the mold.

Images