CN115070013A - High efficiency die casting die - Google Patents

Abstract

The invention belongs to the technical field of mold devices, and specifically discloses a high-efficiency die-casting mold, which comprises a base, two sets of support plates are fixedly arranged on the upper end of the base, and a lower mold is fixedly arranged at the upper end of the support plates, and the lower mold A mold cavity is opened at the center position of the lower mold, and a set of guide slide bars are fixedly connected to the four corners of the upper end of the lower mold. An ejector mechanism is installed between the group support plates, and the ejector mechanism includes a drive assembly and an ejector assembly. The present invention can realize the purpose of gradually separating the product and the mold cavity gradually, and through the reciprocating small-amplitude ejection motion, it can avoid directly using the ejector pin to eject the product and cause damage to the product when separating the product and the mold cavity. In this way, the qualified rate of product removal is further improved.

Description

A high-efficiency die-casting mold

technical field

The invention belongs to the technical field of molds, and specifically discloses a high-efficiency die-casting mold.

Background technique

A die-casting die is a tool for casting metal parts, a tool that completes the die-casting process on a dedicated die-casting die forging machine. The basic process of die casting is: the molten metal is first cast at low speed or high speed and filled into the cavity of the mold. The mold has a movable cavity surface. Loose defects also make the internal structure of the blank reach the broken grains in the forged state. The comprehensive mechanical properties of the blank are significantly improved.

In the past, there were some shortcomings in the use of die-casting molds. Generally, when the die-casting mold was demoulded, the ejector rod was directly used to eject the product. However, because the product was relatively fragile when it was first formed, the ejector rod was directly used. When ejecting the product, it is easy to cause the product to be ejected. In addition, in the past, there was no problem in directly using the ejector pin to eject the product with a flat bottom, but the bottom was not in a plane. When the product above is ejected, it may appear that the product is subjected to uneven force during the ejection process, resulting in damage to the product during ejection, which virtually increases the defective product rate of the product.

SUMMARY OF THE INVENTION

The purpose of the present invention is to propose a high-efficiency die-casting mold in order to solve the shortcomings in the prior art.

In order to achieve the above purpose, the present invention provides a high-efficiency die-casting mold, which includes a base, two sets of support plates are fixedly arranged at the upper end of the base, and a lower mold is fixedly arranged at the upper end of the support plate, and the center of the lower mold is fixed. A mold cavity is opened at the position, a set of guide slide bars are fixedly connected to the four corners of the upper end of the lower mold, the outer side of the guide slide bar is slidably provided with an upper mold, and the upper side of the base is located close to the two sets of supports An ejector mechanism is installed between the plates, and the ejector mechanism includes a drive assembly and an ejector assembly.

Preferably, the drive assembly includes a mounting plate fixedly arranged on the upper end of the base near the right edge, the mounting plate is fixedly mounted with a drive motor, and one end of the drive motor is provided with a drive shaft, and the drive shaft rotates throughout Located between the two sets of the support plates, one end of the drive shaft is fixedly connected with the output shaft of the drive motor.

Preferably, two sets of first helical gears are fixedly arranged on the outer side of the drive shaft, the lower end of the first helical gear is meshed with a second helical gear, and the lower end of the second helical gear is provided with a driving screw, so The driving screw is rotatably arranged on the upper end of the base.

Preferably, the ejector assembly includes an upward moving plate that is limited and slidably arranged between two sets of support plates, the upward moving plate and the driving screw are screwed together, and the upper end of the upward moving plate is provided with an upper moving plate. A reciprocating assembly is arranged on the outer side of the upward moving assembly.

Preferably, the upward moving assembly includes several groups of upward moving rods fixedly connected to the upper end of the upward moving plate, and two sets of limit blocks are fixedly connected to the upper position of the upward moving rod, and the outer side of the upward moving rod is arranged There is a movable sleeve, the movable sleeve is slidably connected with the moving rod, there is a certain damping between the movable sleeve and the moving rod, the movable sleeve is provided with a limit slot, and the limit block is connected to the limiter. The position slots are adapted to each other, and the limit blocks are slidably connected with the limit slots.

Preferably, the inside of the movable sleeve is slidably provided with a damping block adapted to it, the damping block is slidably connected to the inside of the movable sleeve, a top rod is fixedly connected to the upper end of the damping block, and the damping block is connected to the movable sleeve. There is damping between the sleeves, and the top rod extends through the lower mold to the mold cavity.

Preferably, the reciprocating assembly includes a cam fixed on the outer side of the drive shaft, the upper end of the cam is provided with a roller, the upper end of the roller is provided with a moving plate, and the space between the moving plate and the two sets of support plates is Slide to connect.

Preferably, the reciprocating assembly further comprises a moving ring fixedly arranged on the outer side of the movable sleeve, the lower end of the moving ring and the upper end of the moving plate are fitted with each other, the upper end of the moving ring is provided with a spring, The upper end is provided with a limiting ring, and the spring is movably sleeved on the outside of the movable sleeve.

Compared with the prior art, the present invention has the following beneficial effects:

1. When in use, when taking out the product, the upper mold is moved up along the guide slide bar, so as to achieve the purpose of opening the lower mold and the upper mold. At this time, it is necessary to separate the product inside the mold cavity from the mold cavity. By starting the drive motor fixedly installed on the mounting plate, the drive shaft can be driven to rotate by starting the drive motor, and the first helical gear can be driven to rotate through the rotation of the drive shaft. Since the first helical gear and the second helical gear mesh with each other Therefore, when the first helical gear rotates, the second helical gear can be driven to rotate, so as to achieve the purpose of driving the driving screw to rotate. When the upper-moving plate is moved, the upper-moving plate can be driven to slide up between the two sets of support plates, and the upward-moving rod can be driven to move upward by moving the upper-moving plate. When moving up, the movable sleeve can be driven to move up to a certain extent. Since the movable sleeve and the ejector rod have a certain damping property through the damping block, the purpose of driving the ejector pin to realize the upward movement of the product inside the movable mold cavity is achieved. The distributed ejector rod in contact with the lower end of the product can realize the uniform force on the lower end of the product when the product is ejected, and reduce the damage of the product due to the uneven force on the bottom during the ejection process. When rotating, the cam can be driven to rotate, and the purpose of driving the roller to move up and down can be achieved through the rotation of the cam, so as to make the roller move up and down. The ring moves up, so that the movable sleeve moves up. By moving the movable sleeve up, the ejector rod can move up. At this time, the spring is compressed. When the moving plate moves down, the spring is reset under its own elastic force, so as to achieve The purpose of driving the moving ring down, so as to make the movable sleeve move down, and the ejector rod can move down by moving the movable sleeve down. Due to the periodic movement between the cam and the roller, the ejector rod will always move at the lower end of the product. Periodic and small-amplitude ejection and retraction movements, in this way, the purpose of gradually separating the product from the cavity can be achieved;

2. Through this reciprocating small-amplitude ejection movement, it is possible to avoid product damage caused by direct ejection of the ejector pin when separating the product and the mold cavity, and this method further improves the qualification rate of product removal.

Description of drawings

FIG. 1 is a schematic structural diagram of a high-efficiency die-casting mold proposed by the present invention;

2 is a schematic structural diagram of a high-efficiency die-casting mold proposed by the present invention;

3 is a schematic diagram of a partial structure of a high-efficiency die-casting mold proposed by the present invention;

FIG. 4 is a schematic partial structure diagram of a high-efficiency die-casting mold proposed by the present invention;

FIG. 5 is a schematic partial structure diagram of a high-efficiency die-casting mold proposed by the present invention;

FIG. 6 is an enlarged structural schematic diagram of part A of a high-efficiency die-casting mold proposed by the present invention;

FIG. 7 is a schematic partial structure diagram of a high-efficiency die-casting mold proposed by the present invention;

FIG. 8 is an enlarged structural schematic diagram of part B of a high-efficiency die-casting mold proposed by the present invention.

In the figure: 1. Base; 2. Supporting plate; 3. Lower die; 4. Mould cavity; 5. Guide slide bar; 6. Upper die; 713, drive shaft; 714, first helical gear; 715, second helical gear; 716, drive screw; 72, ejector assembly; 721, move up plate; 722, move up assembly; Shift rod; 7223, limit block; 7224, movable sleeve; 7225, limit slot; 7226, damping block; 7227, ejector rod; 723, reciprocating assembly; 7231, moving ring; 7232, spring; 7233, limit ring; 7234, cam; 7235, roller; 7236, moving plate.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below. limit.

As shown in Figures 1-8, a high-efficiency die-casting mold includes a base 1, two sets of support plates 2 are fixedly arranged on the upper end of the base 1, and a lower die 3 is fixedly arranged on the upper end of the support plate 2, and the center of the lower die 3 is fixed. There is a mold cavity 4 at the position, and a set of guide slide bars 5 are fixedly connected to the four corners of the upper end of the lower die 3. The outer side of the guide slide bar 5 is slidably provided with an upper die 6, and the upper side of the base 1 is located close to the two sets of supports An ejector mechanism 7 is installed between the plates 2 , and the ejector mechanism 7 includes a drive assembly 71 and an ejector assembly 72 .

The drive assembly 71 includes a mounting plate 711 fixedly disposed on the upper end of the base 1 near the right edge, the mounting plate 711 is fixedly mounted with a drive motor 712, and one end of the drive motor 712 is provided with a drive shaft 713, the drive shaft 713 is located in two groups of Between the support plates 2, one end of the drive shaft 713 is fixedly connected with the output shaft of the drive motor 712. Two sets of first helical gears 714 are fixedly arranged on the outer side of the drive shaft 713, and the lower end of the first helical gear 714 is meshed and connected with a second helical gear 714. Two helical gears 715 , the lower end of the second helical gear 715 is provided with a driving screw 716 , and the driving screw 716 is rotatably arranged on the upper end of the base 1 .

When taking out the product, by sliding the upper mold 6 up along the guide slide bar 5, the purpose of opening the space between the lower mold 3 and the upper mold 6 is achieved. At this time, the product inside the cavity 4 needs to be separated from the cavity. 4 are separated, by activating the drive motor 712 fixedly installed on the mounting plate 711, the drive shaft 713 can be driven to rotate by starting the drive motor 712, and the first helical gear 714 can be driven to rotate by the rotation of the drive shaft 713, because the first helical gear 714 It is in meshing relationship with the second helical gear 715, so when the first helical gear 714 rotates, the second helical gear 715 can be driven to rotate, so as to achieve the purpose of driving the driving screw 716 to rotate. 716 is in a threaded connection, so when the driving screw 716 rotates, the upward moving plate 721 can be driven to slide upward between the two sets of support plates 2 .

The ejector assembly 72 includes an upward-moving plate 721 that is slidably disposed between the two sets of support plates 2 . The upward-moving plate 721 and the driving screw rod 716 are threadedly connected. The upper end of the upward-moving plate 721 is provided with an upward-moving assembly 722 , a reciprocating assembly 723 is provided on the outer side of the upward moving assembly 722, and the upward moving assembly 722 includes several groups of upward moving rods 7221 fixedly connected to the upper end of the upward moving plate 721, and two sets of limiters are fixedly connected to the upper position of the upward moving rod 7221. Block 7223, a movable sleeve 7224 is provided on the outer side of the upward moving rod 7221, the movable sleeve 7224 is slidably connected with the upward moving rod 7221, the movable sleeve 7224 and the upward moving rod 7221 have a certain damping property, and the movable sleeve 7224 has a limited opening Position slot 7225, the limit block 7223 and the limit slot 7225 are matched, the limit block 7223 and the limit slot 7225 are slidably connected, and the inside of the movable sleeve 7224 is slidably provided with a damping block 7226 adapted to it, The damping block 7226 is slidably connected to the inside of the movable sleeve 7224, and the upper end of the damping block 7226 is fixedly connected with a push rod 7227. There is damping between the damping block 7226 and the movable sleeve 7224, and the push rod 7227 runs through the lower mold 3 and extends to the mold cavity 4 place.

The upward movement of the upward movement plate 721 can drive the upward movement of the upward movement rod 7221. Due to the damping between the upward movement rod 7221 and the movable sleeve 7224, the upward movement of the upward movement rod 7221 can drive the movable sleeve 7224 upward to a certain extent. Since the movable sleeve 7224 and the ejector rod 7227 have a certain damping property through the damping block 7226, the driving ejector rod 7227 can achieve the purpose of pushing the product inside the movable mold cavity 4 to rise. The inter-contact ejector rod 7227 can realize the uniform force on the lower end of the product when it is ejected, and reduce the damage of the product due to the uneven force on the bottom during the ejection process.

The reciprocating assembly 723 includes a cam 7234 fixed on the outer side of the drive shaft 713 , the upper end of the cam 7234 is provided with a roller 7235 , and the upper end of the roller 7235 is provided with a moving plate 7236 , and the moving plate 7236 is slidingly connected with the two groups of support plates 2 . , the reciprocating assembly 723 also includes a moving ring 7231 fixed on the outer side of the movable sleeve 7224, the lower end of the moving ring 7231 and the upper end of the moving plate 7236 are attached to each other, the upper end of the moving ring 7231 is provided with a spring 7232, and the upper end of the spring 7232 is provided with The limiting ring 7233 and the spring 7232 are movably sleeved on the outside of the movable sleeve 7224.

In addition, when the driving shaft 713 rotates, the cam 7234 can be driven to rotate, and the purpose of driving the roller 7235 to move up and down can be realized by the rotation of the cam 7234, so as to achieve the up and down movement of the roller 7235, and the up and down movement of the roller 7235 can drive the moving plate 7236 to move up and down, During the upward movement of the moving plate 7236, the moving ring 7231 can be driven to move upward, so that the movable sleeve 7224 moves upward, and the top rod 7227 can be moved upward through the upward movement of the movable sleeve 7224. At this time, the spring 7232 is compressed, and when the moving plate 7236 moves upward When moving down, the spring 7232 is reset under the action of its own elastic force at this time, so as to achieve the purpose of driving the moving ring 7231 to move down, so that the movable sleeve 7224 moves down, and the movable sleeve 7224 moves down to make the ejector rod 7227 move down, Due to the periodic movement between the cam 7234 and the roller 7235, the ejector rod 7227 will always perform periodic small-amplitude ejection and retraction movements at the lower end of the product. The purpose of gradual separation between the mold cavities 4, through this reciprocating small-amplitude ejection movement, can avoid directly using the ejector rod 7227 to eject the product when separating the product and the mold cavity 4. Damage to the product in this way The pass rate of extraction is further improved.

Working principle: When taking out the product, the upper mold 6 is moved up along the guide slide bar 5, so as to achieve the purpose of opening the lower mold 3 and the upper mold 6. At this time, the cavity 4 needs to be opened. The inner product is separated from the mold cavity 4. By starting the drive motor 712 fixedly installed on the mounting plate 711, the drive shaft 713 can be driven to rotate by starting the drive motor 712, and the first helical gear 714 can be driven to rotate by the drive shaft 713 rotating. Since the first helical gear 714 and the second helical gear 715 are in meshing relationship with each other, when the first helical gear 714 rotates, the second helical gear 715 can be driven to rotate, thereby achieving the purpose of driving the driving screw 716 to rotate. There is a threaded connection between the plate 721 and the driving screw 716, so when the driving screw 716 rotates, the upward moving plate 721 can be driven to slide upward between the two sets of support plates 2, and the upward movement of the upward moving plate 721 can be realized. Drive the upward movement rod 7221 to move up, because of the damping between the upward movement rod 7221 and the movable sleeve 7224, when the upward movement rod 7221 moves upward, the movable sleeve 7224 can be driven to move upward to a certain extent. 7227 has a certain damping property through the damping block 7226, so as to achieve the purpose of driving the ejector rod 7227 to achieve the purpose of lifting the product inside the movable mold cavity 4, and the ejector rod 7227 in contact with the lower end of the product can realize the product through the evenly distributed ejector rod 7227. When being ejected, the force on the lower end is uniform, which reduces the damage of the product due to the uneven force on the bottom during the ejection process. In addition, when the drive shaft 713 rotates, the cam 7234 can be driven to rotate, and the cam 7234 can rotate through the rotation of the cam 7234. The purpose of driving the roller 7235 to move up and down is achieved, so as to make the roller 7235 move up and down, and the moving plate 7236 can be driven to move up and down by the up and down movement of the roller 7235. The movable sleeve 7224 is moved up, and the top rod 7227 can be moved up by moving the movable sleeve 7224 up, and the spring 7232 is compressed at this time. The purpose of driving the moving ring 7231 to move down, so that the movable sleeve 7224 moves down, and the movable sleeve 7224 moves down to make the ejector rod 7227 move down. Due to the periodic movement between the cam 7234 and the roller 7235, the ejector rod 7227 also It will always do periodic small-amplitude ejection and retraction movements at the lower end of the product. In this way, the purpose of gradually separating the product from the cavity 4 can be achieved. Through this reciprocating small-amplitude ejection The movement can avoid directly using the ejector rod 7227 to push out the product when separating the product from the cavity 4, which will cause the product to be damaged. This way, the qualified rate of product removal is further improved.

In the present invention, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, "connected" may be a fixed connection, a detachable connection, or an integral connection ; can be connected between each other, or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of this specification, where the terms "one embodiment," "some embodiments," "specific embodiments," etc. appear in the description, it means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are contained in in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions describe only the principles of the present invention. Without departing from the spirit and scope of the present invention, there are various Variations and improvements are intended to fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A high-efficiency die-casting mold, comprising a base (1), characterized in that the upper end of the base (1) is fixedly provided with two sets of support plates (2), and the upper end of the support plate (2) is fixedly provided with A lower mold (3), a mold cavity (4) is opened at the center position of the lower mold (3), and a set of guide slide bars (5) are fixedly connected to the four corners of the upper end of the lower mold (3), An upper die (6) is slidably arranged on the outer side of the guide sliding rod (5), and a jacking mechanism (7) is installed on the upper side of the base (1) near the two sets of support plates (2). The ejecting mechanism (7) includes a driving assembly (71) and an ejecting assembly (72). 2. A high-efficiency die-casting mold according to claim 1, characterized in that, the driving assembly (71) comprises a mounting plate (711) fixedly arranged on the upper end of the base (1) near the right edge, so The mounting plate (711) is fixedly mounted with a drive motor (712), one end of the drive motor (712) is provided with a drive shaft (713), and the drive shaft (713) rotates through the two sets of the support plates (2). ), one end of the drive shaft (713) is fixedly connected with the output shaft of the drive motor (712). 3. The high-efficiency die-casting mold according to claim 2, characterized in that, two sets of first helical gears (714) are fixedly arranged on the outer side of the drive shaft (713), and the first helical gears (714) ) is meshed with a second helical gear (715), the lower end of the second helical gear (715) is provided with a driving screw (716), and the driving screw (716) is rotatably arranged on the bottom of the base (1). upper end. 4. The high-efficiency die-casting mold according to claim 1, characterized in that, the ejector assembly (72) comprises an upward-moving plate (721) that is limited and slidably arranged between the two sets of support plates (2). , the upward movement plate (721) and the driving screw rod (716) are connected by screw threads, the upper end of the upward movement plate (721) is provided with a movement upward assembly (722), and the upper movement of the upward movement assembly (722) is A reciprocating assembly (723) is provided on the outside. 5. A high-efficiency die-casting mold according to claim 4, characterized in that the moving-up assembly (722) includes several groups of moving-up rods (7221) fixedly connected to the upper end of the moving-up plate (721), Two sets of limit blocks (7223) are fixedly connected to the upper position of the upward moving rod (7221), and a movable sleeve (7224) is arranged on the outer side of the upward moving rod (7221). The upward moving rods (7221) are slidably connected, the movable sleeve (7224) and the upward moving rod (7221) have a certain damping property, and the movable sleeve (7224) is provided with a limit slot (7225), so The limiting block (7223) is matched with the limiting groove (7225), and the limiting block (7223) and the limiting groove (7225) are slidably connected. 6. The high-efficiency die-casting mold according to claim 5, wherein a damping block (7226) adapted to the movable sleeve (7224) is slidably provided inside the movable sleeve (7224), and the damping block (7226) is slidably connected inside the movable sleeve (7224), the upper end of the damping block (7226) is fixedly connected with a push rod (7227), and the damping block (7226) and the movable sleeve (7224) have damping properties, the The ejector rod (7227) extends through the lower mold (3) to the mold cavity (4). 7. The high-efficiency die-casting mold according to claim 4, wherein the reciprocating assembly (723) comprises a cam (7234) fixedly arranged on the outer side of the drive shaft (713), and the cam (7234) A roller (7235) is arranged on the upper end of the roller (7235), and a moving plate (7236) is arranged on the upper end of the roller (7235). 8 . The high-efficiency die-casting mold according to claim 4 , wherein the reciprocating assembly ( 723 ) further comprises a moving ring ( 7231 ) fixedly arranged on the outer side of the movable sleeve ( 7224 ), the moving ring The lower end of (7231) and the upper end of the moving plate (7236) are attached to each other, the upper end of the moving ring (7231) is provided with a spring (7232), and the upper end of the spring (7232) is provided with a limiting ring (7233), The spring (7232) is movably sleeved on the outside of the movable sleeve (7224).

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