Die-casting die with insert tensioning structure
By introducing tensioning mechanisms and guide mechanisms into the die-casting mold, the problems of offset and inclination of the inserts during casting are solved, accurate positioning and efficient cooling of the inserts are achieved, and the quality and production efficiency of the die-cast finished products are improved.
Patent Information
- Application Number
- CN202510581485.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-07-11
AI Technical Summary
During the die casting process, the insert is prone to offset or tilt when injecting the cast metal liquid, which affects the position accuracy and finished product quality after demolding.
A die-casting mold with an insert tightening structure is designed, including a tensioning mechanism and a guide mechanism. The insert is fixed through the tensioning block and the inner wall of the insert, the insert position is adjusted using the inclined surface, and the mold positioning is assisted by the exhaust cover and positioning block to ensure that the insert is well positioned during the mold closing process. At the same time, the gas flow and coolant communication are accelerated through the exhaust tank to improve cooling efficiency.
Effectively prevent the insert from being offset and inclined during casting, ensure the accuracy of the finished product position, reduce the difficulty of demolding, improve cooling efficiency, and avoid finished product defects.
Smart Images
Figure CN120286679A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of die-casting molds, and specifically to a die-casting mold with an insert tensioning structure. Background Art
[0002] A die-casting mold is an important tool for producing metal parts and is widely used in many industries such as automotive, motorcycle, aerospace, electronics, household appliances, etc. For example, in the automotive industry, it is used to produce engine blocks, transmission housings, wheels and other components. By injecting molten metal into the mold and then cooling and solidifying it, the required part shape and size can be manufactured. It can quickly and economically manufacture precise parts, is suitable for mass production, and can produce parts with complex shapes, thin walls, high precision, and flat surfaces and high dimensional consistency. For example, a steel insert is cast into the motor bearing hole of the main motor housing during die-casting production. When casting a ring insert during die-casting, due to the fluctuation of the molten metal after it is injected into the forming cavity, there is an impact on the insert, resulting in the insert shifting or tilting, which affects the position accuracy of the insert after die-casting cooling and demolding. Summary of the Invention
[0003] To achieve the above objectives, the present invention is realized through the following technical solutions: A die-casting mold with an insert tensioning structure, comprising: A bottom mold, on the bottom of which a guiding mechanism is fixedly installed. On both sides of the bottom of the guiding mechanism, fixing seats are installed, and at the central position of the bottom of the guiding mechanism, a cylinder is fixedly installed. A top mold, which is located above the bottom mold and cooperates with the bottom mold to form a die-casting cavity, and the outer side of the top mold is fixedly connected to the inner wall of the guiding mechanism. A tensioning mechanism, which is used to fix the insert, and the tensioning mechanism is installed inside the bottom mold. Among them, the tensioning mechanism includes a chute cylinder. A snap ring is fixedly connected to the bottom of the chute cylinder. An annular groove is formed on the outer side of the chute cylinder, and chute grooves are evenly formed at the annular groove. Tensioning blocks are slidably installed at the chute grooves of the chute cylinder. The upper half of the non-opposite surfaces of the tensioning blocks is an inclined surface that slopes inward from top to bottom. Through the inclined surfaces of the upper half of the non-opposite surfaces of the tensioning blocks, during the process of the cylinder expanding outward by the transmission shaft and the tensioning blocks, through contact with the inner wall of the annular insert, the annular insert is fixed and positioned, restricting the movement of the insert during the pouring of the metal material, avoiding the offset of the insert due to the fluctuation of the injected metal melt during pouring. At the same time, by using the inclined surfaces of the tensioning blocks to contact the edge at the top of the inner wall of the annular insert, it is ensured that the top of the annular insert is flush with the horizontal plane, avoiding the inclination of the insert after demolding after casting. And the opposite surfaces of the tensioning blocks are inclined surfaces that slope outward from top to bottom. A tapered top block is slidably connected to the inner wall of the chute cylinder. The outer side of the tapered top block is an inclined surface that slopes outward from top to bottom, and the inclined surface of the tapered top block is adapted to the inclined surface of the opposite surface of the tensioning block.
[0004] Preferably, the top of the outer side of the chute cylinder is a conical surface with an outer diameter gradually increasing from top to bottom. And a ball groove plate is fixedly connected to the top of the inner wall of the chute cylinder. Through the cooperation of the chute cylinder and the exhaust hood, and the cooperation of the ball groove plate and the positioning block, during the mold closing process, through snap connection contact and the guiding of the auxiliary guiding structure, the top mold and the bottom mold after mold closing are positioned, avoiding the misalignment of the top mold and the bottom mold during mold closing, affecting the shape of the forming cavity, and causing defects in the die-cast product. There is a ball groove at the center position of the top of the ball groove plate, and a positioning block is snap-connected to the top of the ball groove plate. A ball head is provided at the bottom of the positioning block, and the positioning block is snap-connected to the ball groove of the ball groove plate through the ball head. An exhaust hood is fixedly connected to the outer side of the ball groove plate. Exhaust grooves are evenly formed at the top of the exhaust hood. Through the exhaust grooves of the exhaust hood, during the process of pouring the metal material, the air in the forming cavity can be discharged along the exhaust grooves. At the same time, according to the characteristic that the diameter of the exhaust grooves gradually increases from top to bottom, the gas flow speed is accelerated when discharging the gas. At the same time, during demolding, the restriction on the solidified metal in the exhaust grooves is reduced, reducing the demolding difficulty. And the diameter of the exhaust grooves gradually increases from top to bottom. A connecting ring is fixedly connected to the bottom of the exhaust hood. A transmission shaft is fixedly connected to the bottom of the tapered top block. The bottom end of the transmission shaft is connected to the output end of the cylinder through a coupling.
[0005] The guiding mechanism includes a bottom plate. The bottom plate is fixedly installed at the bottom of the bottom mold. And guiding rods are fixedly installed at the corners of the top of the bottom plate. A sliding hole frame is slidably installed on the outer side of the guiding rods. The inner wall of the sliding hole frame is fixedly connected to the outer side of the top mold.
[0006] Preferably, the top mold includes a top mold frame. At the top of the inner wall of the top mold frame, a sealing plate is fixedly connected. The inner wall of the sealing plate is fixedly connected to the outer side of the exhaust hood. At the bottom of the inner wall of the top mold frame, an outer mold cover is fixedly connected. At the bottom of the outer side of the top mold frame, a casting pipe is fixedly connected. One end of the casting pipe close to the top mold frame penetrates through the top mold frame and extends into the interior of the outer mold cover. Circular grooves are provided at the corners of the bottom of the top mold frame. At the circular groove positions of the top mold frame, groove cylinders are fixedly installed. Through grooves are evenly provided on the outer side of the groove cylinders, and circular plates are fixedly installed at the tops of the groove cylinders. By cooperating the through grooves of the groove cylinders with the pressing blocks, when the molds are closed, the coolant injection spaces of the top mold and the bottom mold are communicated. When the coolant is introduced, the inner and outer sides of the forming cavity are cooled simultaneously, improving the cooling efficiency and avoiding product defects caused by asynchronous cooling of the inner and outer sides. At the central positions of the bottoms of the circular plates, pressing blocks are fixedly installed.
[0007] Preferably, the bottom mold includes a bottom frame. The bottom frame is fixedly installed on the top of the bottom plate. At the top of the bottom frame, a groove frame is fixedly connected. Connectors are fixedly installed on both sides of the groove frame. Empty grooves are provided at the corners of the groove frame, and the empty grooves correspond to the circular grooves one by one. A sliding cylinder is fixedly connected to the inner wall of the groove frame. At the bottom of the inner wall of the sliding cylinder, an elastic cushion block is fixedly connected. At the tops of the elastic cushion blocks, conical blocks are fixedly connected. By cooperating the conical blocks with the through groove cylinders, when the coolant is injected, the inner and outer sides of the forming cavity are injected with coolant simultaneously. At the same time, under the pressure of the pressing blocks, the conical blocks open the flow space between the circular groove and the empty groove. During the process of the liquid level gradually rising from bottom to top, the inner and outer sides rise simultaneously, cooling the metal material at the same horizontal plane and improving the cooling effect. The outer sides of the conical blocks are conical surfaces with an outer diameter gradually decreasing from top to bottom, and the outer sides of the conical blocks are slidably adapted to the inner wall of the sliding cylinder. A through groove cylinder is fixedly connected to the inner wall of the groove frame. Through holes are symmetrically provided on the outer side of the through groove cylinder. An inner cushion block is fixedly connected to the bottom of the through groove cylinder. An inner mold cover is fixedly connected to the top of the through groove cylinder. A sealing ring is fixedly installed between the through groove cylinder and the inner mold cover. There is a gap between the inner mold cover and the inner cushion block, and the top of the inner wall of the inner mold cover is fixedly connected to the bottom of the outer side of the sliding groove cylinder. The top of the outer side of the inner cushion block is fixedly connected to the bottom of the snap ring.
[0008] The present invention provides a die-casting mold with an insert tensioning structure, having the following beneficial effects: 1. The die-casting mold with an insert tensioning structure, through the inclined surface on the upper half of the non-opposite surface of the tensioning block, when the cylinder slides and expands the tensioning block outward through the transmission shaft, through the contact with the inner wall of the annular insert, the annular insert is fixed and positioned, restricting the movement of the insert during the casting of the metal material, avoiding the offset of the insert due to the fluctuation of the injected metal melt during pouring, and at the same time using the inclined surface of the tensioning block to contact the edge at the top of the inner wall of the annular insert to ensure that the top of the annular insert is flush with the horizontal plane, avoiding the inclination of the insert after demolding after pouring is completed.
[0009] 2. The die-casting mold with an insert tensioning structure, through the cooperation of the chute cylinder and the exhaust hood, and the cooperation of the ball groove disc and the positioning block, during the mold closing process, through the snap connection contact and the guiding of the auxiliary guiding structure, the top mold and the bottom mold after mold closing are positioned, avoiding the misalignment of the top mold and the bottom mold during mold closing, affecting the shape of the forming cavity, and causing defects in the die-cast product.
[0010] 3. The die-casting mold with an insert tensioning structure, through the exhaust groove of the exhaust hood, during the process of casting the metal material, the air in the forming cavity can be led out along the exhaust groove. At the same time, according to the characteristic that the diameter of the exhaust groove gradually increases from top to bottom, the gas flow rate is accelerated when the gas is led out, and at the same time, during demolding, the restriction on the solidified metal in the exhaust groove is reduced, reducing the demolding difficulty.
[0011] 4. The die-casting mold with an insert tensioning structure, through the cooperation of the through groove of the groove cylinder and the pressing block, during mold closing, the coolant injection space of the top mold is connected with the coolant injection space of the bottom mold. When the coolant is introduced, both sides inside and outside the forming cavity are cooled simultaneously, improving the cooling efficiency and avoiding defects in the finished product caused by asynchronous cooling on both sides inside and outside.
[0012] 5. The die-casting mold with an insert tensioning structure, through the cooperation of the conical surface block and the through groove cylinder, when injecting the coolant, both sides inside and outside the forming cavity are injected with coolant simultaneously. At the same time, through the pressing of the pressing block, the conical surface block opens the flow space between the round groove and the empty groove. During the process of the liquid level gradually rising from bottom to top, both sides inside and outside rise simultaneously, cooling the metal material at the same horizontal plane, improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is a schematic structural diagram of the guiding mechanism of the present invention; Figure 3 is a schematic structural diagram of the top mold of the present invention; Figure 4 is a sectional view of the structure of the top mold of the present invention; Figure 5 is a partial sectional view of the structure of the top mold of the present invention; Figure 6 It is the partial structural dissection bottom view of the top mold of the present invention; Figure 7 It is the structural dissection view of the tensioning mechanism of the present invention; Figure 8 It is the structural schematic diagram of the bottom mold of the present invention; Figure 9 It is the structural dissection view of the bottom mold of the present invention; Figure 10 It is the partial structural dissection view of the tensioning mechanism of the present invention.
[0014] In the figure: 1, fixed seat; 2, bottom mold; 3, top mold; 4, tensioning mechanism; 5, air cylinder; 6, guiding mechanism; 201, bottom frame; 202, groove frame; 203, joint; 204, inner mold cover; 205, through groove cylinder; 206, elastic cushion block; 207, sliding cylinder; 208, inner cushion block; 209, sealing ring; 210, conical surface block; 31, top mold frame; 32, sealing plate; 33, casting pipe; 34, outer mold cover; 35, circular plate; 36, groove cylinder; 37, pressing block; 41, exhaust hood; 42, positioning block; 43, connecting ring; 44, transmission shaft; 45, conical top block; 46, sliding groove cylinder; 47, ball groove disc; 48, tensioning block; 49, snap ring; 61, sliding hole frame; 62, guiding rod; 63, bottom plate. Specific embodiments
[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0016] The first embodiment is as shown in Figures 1 to 2 、 Figure 7 and Figure 10 The present invention provides a technical solution: A die-casting mold with an insert tensioning structure, comprising: A bottom mold 2, on the bottom of which a guiding mechanism 6 is fixedly installed, on both sides of the bottom of the guiding mechanism 6, fixed seats 1 are installed, and at the central position of the bottom of the guiding mechanism 6, an air cylinder 5 is fixedly installed; A top mold 3, which is located above the bottom mold 2 and cooperates with the bottom mold 2 to form a die-casting cavity, and the outside of the top mold 3 is fixedly connected to the inner wall of the guiding mechanism 6; A tensioning mechanism 4, which is used to fix the insert, and the tensioning mechanism 4 is installed inside the bottom mold 2; Among them, the tensioning mechanism 4 includes a chute cylinder 46. A snap ring 49 is fixedly connected to the bottom of the chute cylinder 46. An annular groove is provided on the outer side of the chute cylinder 46, and chutes are evenly provided at the annular groove. Tensioning blocks 48 are slidably installed at the chutes of the chute cylinder 46. The upper half of the non-opposite surfaces of the tensioning blocks 48 is an inclined surface that slopes inwards from top to bottom, and the opposite surfaces of the tensioning blocks 48 are inclined surfaces that slope outwards from top to bottom. One end of a transmission shaft 44 is fixedly connected to the output end of a cylinder 5. Before mold closing, an insert is placed outside the chute cylinder 46 so that the insert is outside the tensioning blocks 48. Then the cylinder 5 drives the conical top block 45 to move upwards through the transmission shaft 44, so that the conical top block 45 cooperates with the inclined surface of the opposite surface of the tensioning block 48. The conical top block 45 drives the tensioning block 48 to slide in the chute of the chute cylinder 46, so that the tensioning block 48 expands outwards, contacts the inner wall of the insert, and fixes the insert. At the same time, during the fixing process, through the inclined surface of the upper half of the non-opposite surface of the tensioning block 48, it contacts the edge at the top of the inner wall of the insert, adjusts the inclination angle of the insert, so that under the drive of the tensioning force, the top of the insert is flush with the horizontal plane. A conical top block 45 is slidably connected to the inner wall of the chute cylinder 46. The outer side of the conical top block 45 is an inclined surface that slopes outwards from top to bottom, and the inclined surface of the conical top block 45 is adapted to the inclined surface of the opposite surface of the tensioning block 48.
[0017] The top of the outer side of the chute cylinder 46 is a conical surface with an outer diameter gradually increasing from top to bottom. A ball groove plate 47 is fixedly connected to the top of the inner wall of the chute cylinder 46. A ball groove is provided at the center of the top of the ball groove plate 47, and a positioning block 42 is clamped on the top of the ball groove plate 47. A ball head is provided at the bottom of the positioning block 42, and the positioning block 42 is clamped to the ball groove of the ball groove plate 47 through the ball head. An exhaust hood 41 is fixedly connected to the outer side of the ball groove plate 47. Exhaust grooves are evenly provided at the top of the exhaust hood 41. During mold closing, through the fixed connection between the exhaust hood 41 and the top mold 3, during mold closing, the top mold 3 drives the exhaust hood 41 to move downwards, and drives the positioning block 42 to move downwards together through the exhaust hood 41. During mold closing, the exhaust hood 41 is matched with the top inclined surface of the outer side of the chute cylinder 46, and the ball head of the positioning block 42 is matched with the ball groove at the top of the ball groove plate 47. During mold closing, it cooperates with the guiding mechanism 6 to assist in positioning when the top mold 3 and the bottom mold 2 are closed. And the diameter of the exhaust groove gradually increases from top to bottom. A connecting ring 43 is fixedly connected to the bottom of the exhaust hood 41. A transmission shaft 44 is fixedly connected to the bottom of the conical top block 45. The bottom end of the transmission shaft 44 is connected to the output end of the cylinder 5 through a coupling.
[0018] The guiding mechanism 6 includes a bottom plate 63. The bottom plate 63 is fixedly installed at the bottom of the bottom mold 2, and guide rods 62 are fixedly installed at the corners of the top of the bottom plate 63. A sliding hole frame 61 is slidably installed on the outer side of the guide rods 62. The inner wall of the sliding hole frame 61 is fixedly connected to the outer side of the top mold 3.
[0019] Second Embodiment. On the basis of the first embodiment, please refer to Figures 3 to 6 As shown, the top mold 3 includes a top mold frame 31. A sealing plate 32 is fixedly connected to the top of the inner wall of the top mold frame 31. The inner wall of the sealing plate 32 is fixedly connected to the outside of the exhaust hood 41. An outer mold cover 34 is fixedly connected to the bottom of the inner wall of the top mold frame 31. A casting pipe 33 is fixedly connected to the bottom of the outside of the top mold frame 31. During the process of injecting molten metal, the molten metal is introduced into the forming cavity formed between the inside of the outer mold cover 34 and the bottom mold 2 through the casting pipe 33. One end of the casting pipe 33 close to the top mold frame 31 penetrates through the top mold frame 31 and extends into the inside of the outer mold cover 34. During the mold closing process, through the cooperation of the outer mold cover 34 and the bottom mold 2, a forming cavity is formed. At the same time, during the mold closing process, the top mold frame 31 drives the groove cylinder 36, so that the groove cylinder 36 drives the pressing block 37 to move downward through the circular plate 35. During the downward movement, the bottom mold 2 is pressed by the pressing block 37, so that the cooling space between the top mold frame 31 and the outer mold cover 34, through the through groove of the groove cylinder 36 and the pressing of the bottom mold 2 by the pressing block 37, makes the cooling space of the top mold 3 communicate with the cooling space of the bottom mold 2. Circular grooves are provided at the corners of the bottom of the top mold frame 31. Groove cylinders 36 are fixedly installed at the circular groove positions of the top mold frame 31. Through grooves are evenly provided on the outside of the groove cylinder 36, and circular plates 35 are fixedly installed at the tops of the groove cylinders 36. Pressing blocks 37 are fixedly installed at the central positions of the bottoms of the circular plates 35.
[0020] Third Embodiment. On the basis of the first and second embodiments, please refer to Figures 8 to 9As shown in the figure, the bottom mold 2 includes a bottom frame 201. The bottom frame 201 is fixedly installed on the top of the bottom plate 63, and a groove frame 202 is fixedly connected to the top of the bottom frame 201. Connectors 203 are fixedly installed on both sides of the groove frame 202. Empty grooves are provided at the corners of the groove frame 202, and the empty grooves correspond to the circular grooves one by one. During mold closing, the pressing block 37 presses the top of the conical block 210, so that the conical block 210 is pressed downward by the pressing block 37 during mold closing, pressing the elastic cushion block 206 downward, causing the elastic cushion block 206 to deform and compress under the pressure, so that the conical block 210 slides downward along the inner wall of the sliding cylinder 207, so that the conical block 210 stops blocking the empty groove of the groove frame 202, making the empty groove correspond to the circular groove, and making the coolant flow space between the top mold 3 and the bottom mold 2 communicate. The inner wall of the groove frame 202 is fixedly connected with a sliding cylinder 207. The bottom of the inner wall of the sliding cylinder 207 is fixedly connected with an elastic cushion block 206. The top of the elastic cushion block 206 is fixedly connected with a conical block 210. The outer side of the conical block 210 is a conical surface with an outer diameter gradually decreasing from top to bottom, and the outer side of the conical block 210 is slidably matched with the inner wall of the sliding cylinder 207. The inner wall of the groove frame 202 is fixedly connected with a through groove cylinder 205. Through holes are symmetrically provided on the outer side of the through groove cylinder 205. The bottom of the through groove cylinder 205 is fixedly connected with an inner cushion block 208. The top of the through groove cylinder 205 is fixedly connected with an inner mold cover 204. When injecting coolant, the cooling pipeline is connected to the connectors 203 on both sides, so that the coolant is introduced from one side connector 203 and exported from the connector 203 on the other side. During the process of injecting coolant, the coolant first enters the groove frame 202 and passes through the through holes of the through groove cylinder 205, so that the coolant enters the gap between the inner side of the inner mold cover 204 and the inner cushion block 208. At the same time, through the connection of the empty groove and the circular groove, when the injection amount of the coolant increases and the liquid level height increases, the coolant on both sides of the inner and outer sides of the forming cavity cools and solidifies the molten metal at the same time. A sealing ring 209 is fixedly installed between the through groove cylinder 205 and the inner mold cover 204. There is a gap between the inner mold cover 204 and the inner cushion block 208, and the top of the inner wall of the inner mold cover 204 is fixedly connected with the bottom of the outer side of the sliding groove cylinder 46. The top of the outer side of the inner cushion block 208 is fixedly connected with the bottom of the snap ring 49.
[0021] During use, the mold is installed in the equipment. The equipment controls the mold to guide the opening and closing of the mold between the top mold 3 and the bottom mold 2 through the guiding mechanism 6. At the same time, the cooling pipeline is connected to the bottom mold 2, and the casting pipeline is connected to the top mold 3. During die casting, first place the insert outside the tensioning mechanism 4, drive the tensioning mechanism 4 through the cylinder 5 to fix the insert. Subsequently, the top mold 3 and the bottom mold 2 are closed, and the molten metal melt is injected into the cavity formed by the top mold 3 and the bottom mold 2 through the top mold 3, so that the molten metal fills the cavity and contacts the insert. Subsequently, the cooling liquid is injected into the mold to cool and solidify the metal and fix the insert to the solidified metal melt. Subsequently, the cylinder 5 drives the tensioning mechanism 4 to stop fixing the insert. Finally, the top mold 3 and the bottom mold 2 are separated, and the formed shell is taken out.
[0022] In the tensioning mechanism 4, one end of the transmission shaft 44 is fixedly connected to the output end of the cylinder 5. Before mold closing, the insert is placed outside the chute cylinder 46, so that the insert is outside the tensioning block 48. Subsequently, the cylinder 5 drives the conical top block 45 to move upward through the transmission shaft 44, so that the conical top block 45 cooperates with the inclined surface on the opposite surface of the tensioning block 48. The conical top block 45 drives the tensioning block 48 to slide in the chute of the chute cylinder 46, so that the tensioning block 48 expands outward, contacts the inner wall of the insert, and fixes the insert. At the same time, during the fixing process, through the inclined surface on the upper half of the non-opposite surface of the tensioning block 48, it contacts the edge at the top of the inner wall of the insert, adjusts the inclination angle of the insert, so that under the drive of the tensioning force, the top of the insert is flush with the horizontal plane. At the same time, during the mold closing process, through the fixed connection between the exhaust hood 41 and the top mold 3, during the mold closing process, the exhaust hood 41 is driven to move downward by the downward movement of the top mold 3, and the positioning block 42 is driven to move downward together by the exhaust hood 41. During the mold closing process, the exhaust hood 41 cooperates with the top inclined surface on the outside of the chute cylinder 46, and the ball head of the positioning block 42 cooperates with the ball groove on the top of the ball groove disk 47. During the mold closing process, it cooperates with the guiding mechanism 6 to assist in positioning when the top mold 3 and the bottom mold 2 are closed.
[0023] In the top mold 3, during the mold closing process, the outer mold cover 34 cooperates with the bottom mold 2 to form a molding cavity. At the same time, during the mold closing process, the top mold frame 31 drives the chute cylinder 36, so that the chute cylinder 36 drives the pressing block 37 to move downward through the round plate 35. During the downward movement, the pressing block 37 presses the bottom mold 2, so that the cooling space between the top mold frame 31 and the outer mold cover 34, through the through groove of the chute cylinder 36 and the pressing of the pressing block 37 on the bottom mold 2, makes the cooling space of the top mold 3 communicate with the cooling space of the bottom mold 2. At the same time, during the injection of molten metal, the molten metal is introduced into the molding cavity formed by the inner side of the outer mold cover 34 and the bottom mold 2 through the casting pipe 33.
[0024] In the bottom mold 2, when the molds are closed, the pressing block 37 presses the top of the tapered surface block 210, causing the tapered surface block 210 to press downward on the elastic cushion block 206 during the mold closing process under the pressure of the pressing block 37, deforming and compressing the elastic cushion block 206 under the pressure, and making the tapered surface block 210 slide downward along the inner wall of the sliding cylinder 207, so that the tapered surface block 210 stops blocking the empty slot of the groove frame 202, making the empty slot correspond to the circular slot, and connecting the coolant flow spaces of the top mold 3 and the bottom mold 2. When injecting coolant, the cooling pipe is connected to the connectors 203 on both sides, allowing the coolant to be introduced from one connector 203 and discharged from the other connector 203. During the injection of the coolant, the coolant first enters the groove frame 202 and passes through the through holes of the through groove cylinder 205, enabling the coolant to enter the gap between the inner side of the inner mold cover 204 and the inner cushion block 208. At the same time, through the connection between the empty slot and the circular slot, when the injection volume of the coolant increases and the liquid level height rises, the coolant on both sides inside and outside the forming cavity cools and solidifies the molten metal simultaneously.
[0025] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.
[0026] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A die-casting mold with an insert tensioning structure, characterized in that, Comprising: A bottom mold (2), a guiding mechanism (6) is fixedly installed at the bottom of the bottom mold (2), fixed seats (1) are installed on both sides of the bottom of the guiding mechanism (6), and a cylinder (5) is fixedly installed at the central position of the bottom of the guiding mechanism (6); A top mold (3), the top mold (3) is located above the bottom mold (2) and cooperates with the bottom mold (2) to form a die-casting cavity, and the outer side of the top mold (3) is fixedly connected to the inner wall of the guiding mechanism (6); A tensioning mechanism (4), the tensioning mechanism (4) is used to fix inserts, and the tensioning mechanism (4) is installed inside the bottom mold (2); Among them, the tensioning mechanism (4) includes a chute cylinder (46), a clamping ring (49) is fixedly connected to the bottom of the chute cylinder (46), a ring groove is formed on the outer side of the chute cylinder (46), and chutes are uniformly formed at the ring groove. Tensioning blocks (48) are slidably installed at the chutes of the chute cylinder (46). The upper half of the non-opposite surfaces of the tensioning blocks (48) is an inclined surface that slopes inwards from top to bottom, and the opposite surfaces of the tensioning blocks (48) are inclined surfaces that slope outwards from top to bottom. A tapered top block (45) is slidably connected to the inner wall of the chute cylinder (46). The outer side of the tapered top block (45) is an inclined surface that slopes outwards from top to bottom, and the inclined surface of the tapered top block (45) is adapted to the inclined surface of the opposite surface of the tensioning block (48).
2. The die-casting mold with an insert tensioning structure according to claim 1, characterized in that: The top of the outer side of the chute cylinder (46) is a conical surface with an outer diameter gradually increasing from top to bottom, and a ball groove plate (47) is fixedly connected to the top of the inner wall of the chute cylinder (46). A ball groove is formed at the central position of the top of the ball groove plate (47), and a positioning block (42) is clamped at the top of the ball groove plate (47). A ball head is provided at the bottom of the positioning block (42), and the positioning block (42) is clamped to the ball groove of the ball groove plate (47) through the ball head.
3. The die-casting mold with an insert tensioning structure according to claim 2, wherein: An exhaust hood (41) is fixedly connected to the outer side of the ball groove plate (47). Exhaust grooves are uniformly formed at the top of the exhaust hood (41), and the diameter of the exhaust grooves gradually increases from top to bottom. A connecting ring (43) is fixedly connected to the bottom of the exhaust hood (41). A transmission shaft (44) is fixedly connected to the bottom of the tapered top block (45), and the bottom end of the transmission shaft (44) is connected to the output end of the cylinder (5) through a coupling.
4. A die-casting mold with an insert tensioning structure according to claim 3, characterized in that: The guiding mechanism (6) includes a bottom plate (63), the bottom plate (63) is fixedly installed at the bottom of the bottom mold (2), and guiding rods (62) are fixedly installed at the corners of the top of the bottom plate (63). A sliding hole frame (61) is slidably installed on the outer side of the guiding rod (62), and the inner wall of the sliding hole frame (61) is fixedly connected to the outer side of the top mold (3).
5. The die-casting mold with an insert tensioning structure according to claim 4, characterized in that: The top mold (3) includes a top mold frame (31), a sealing plate (32) is fixedly connected to the top of the inner wall of the top mold frame (31), the inner wall of the sealing plate (32) is fixedly connected to the outer side of the exhaust hood (41), and an outer mold cover (34) is fixedly connected to the bottom of the inner wall of the top mold frame (31).
6. The die-casting mold with an insert tensioning structure according to claim 5, characterized in that: A casting pipe (33) is fixedly connected to the bottom of the outer side of the top die frame (31). One end of the casting pipe (33) close to the top die frame (31) penetrates through the top die frame (31) and extends into the interior of the outer mold cover (34). Circular grooves are formed at the corners of the bottom of the top die frame (31).
7. A die-casting mold with an insert tensioning structure according to claim 6, characterized in that: Slot cylinders (36) are fixedly installed at the circular groove positions of the top die frame (31). Through grooves are evenly formed on the outer sides of the slot cylinders (36). Circular plates (35) are fixedly installed at the tops of the slot cylinders (36). Pressure blocks (37) are fixedly installed at the central positions of the bottoms of the circular plates (35).
8. A die-casting mold with an insert tensioning structure according to claim 7, characterized in that: The bottom die (2) includes a bottom frame (201). The bottom frame (201) is fixedly installed on the top of the bottom plate (63). A slot frame (202) is fixedly connected to the top of the bottom frame (201). Connectors (203) are fixedly installed on both sides of the slot frame (202). Empty grooves are formed at the corners of the slot frame (202), and the empty grooves correspond to the circular grooves one by one. A sliding cylinder (207) is fixedly connected to the inner wall of the slot frame (202). An elastic cushion block (206) is fixedly connected to the bottom of the inner wall of the sliding cylinder (207).
9. The die-casting mold with an insert tensioning structure according to claim 8, characterized in that: The tops of the elastic cushion blocks (206) are fixedly connected with conical blocks (210). The outer sides of the conical blocks (210) are conical surfaces with gradually decreasing outer diameters from top to bottom. The outer sides of the conical blocks (210) are slidably adapted to the inner walls of the sliding cylinders (207). A through groove cylinder (205) is fixedly connected to the inner wall of the slot frame (202). Through holes are symmetrically formed on the outer side of the through groove cylinder (205).
10. A die-casting mold with an insert tensioning structure according to claim 9, characterized in that: An inner cushion block (208) is fixedly connected to the bottom of the through groove cylinder (205). An inner mold cover (204) is fixedly connected to the top of the through groove cylinder (205). A sealing ring (209) is fixedly installed between the through groove cylinder (205) and the inner mold cover (204). There is a gap between the inner mold cover (204) and the inner cushion block (208). The top of the inner wall of the inner mold cover (204) is fixedly connected to the bottom of the outer side of the sliding groove cylinder (46). The top of the outer side of the inner cushion block (208) is fixedly connected to the bottom of the snap ring (49).