Vertical double-side injection die-casting machine

Abstract

The utility model discloses a vertical double-side injection die-casting machine, which belongs to the technical field of die-casting machines, and comprises a lower template, a movable template and an upper template which are sequentially arranged from bottom to top, and an injection mold is arranged between the movable template and the lower template; injection mechanisms are symmetrically arranged on the two sides of the injection mold; the output end of the injection mechanism is provided with a connecting pipe, and the injection mold is detachably matched with the connecting pipe. The mold locking mechanism is simple in structure, accurate and stable in mold locking and favorable for prolonging the service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of die-casting machines, and in particular relates to a vertical double-side injection die-casting machine. Background Art

[0002] Metal die-casting is currently the most efficient metal casting method, with the advantages of short production cycle, good product mechanical properties, excellent surface quality, good quality reproducibility, easy automation, and suitable for large-scale repeated production. It is particularly suitable for the one-piece forming of automobile frames.

[0003] At present, horizontal die-casting machines are technically mature and widely used. However, with the increase in application occasions, the demand for die-casting production in small and medium-sized enterprises has increased, but due to the large size of horizontal die-casting machines, they are less adaptable to small and medium-sized enterprises. The horizontal structure is inherently unable to make large-tonnage die-casting machines, mainly because the force acting on the coring column is unbalanced, it is difficult to overcome the twisting of large-diameter coring columns, it is difficult to ensure accuracy, and it is difficult to ensure dynamic and static conditions.

[0004] The invention application with publication number WO2022120641A1 relates to a die-casting system and a large-tonnage die-casting machine, including a three-cavity die-casting cylinder, a first power device, a second power device and a third power device. The three-cavity die-casting cylinder is provided with a first drive cavity, a second drive cavity and a third drive cavity. The first drive cavity is connected to the first power device, the second drive cavity is connected to the second power device, and the third drive cavity is connected to the third power device. A first piston is provided in the first drive cavity. The first power device is used to drive the first piston in the first drive cavity to move, the second power device is used to drive the second piston in the second drive cavity to move at a second speed, and the third power device is used to drive the third piston in the third drive cavity to move at a third speed. The second speed is less than the third speed, and the third drive cavity is located at the bottom of the three-cavity die-casting cylinder. By using the third drive cavity in the three-cavity die-casting cylinder to achieve high-speed drive, and using the second drive cavity to achieve low-speed precision drive, the accuracy of the die-casting system is improved. However, the structural design is complicated, and the structural rigidity of the upper and lower molds decreases, affecting the service life.

[0005] In addition, the existing die-casting machines still have problems of poor precision and low stability during the clamping process, which affects the work efficiency and the quality of the die-castings. Utility Model Content

[0006] The utility model aims to provide a vertical double-side injection die-casting machine with a simple structure, which has accurate and stable mold locking and helps to prolong the service life.

[0007] The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

[0008] A vertical double-sided injection die-casting machine includes a base, a lower template, a movable template and an upper template are arranged in sequence from bottom to top on the upper side of the base, an injection mold is arranged between the movable template and the lower template, and the injection mold and the lower template are detachable; injection mechanisms are symmetrically arranged on both sides of the injection mold; a connecting pipe is arranged at the output end of the injection mechanism, and the injection mold and the connecting pipe are detachable. Injection holes are opened on both sides of the injection mold, and the injection holes and the connecting pipes are arranged correspondingly.

[0009] Furthermore, the top of the movable template is connected to the output end of the mold shifting cylinder, and the operation of the mold shifting cylinder can drive the movable template to move back and forth up and down.

[0010] Furthermore, the lower template, the movable template and the upper template are arranged correspondingly, and the vertically arranged Corinthian columns pass through the four corners of the lower template, the movable template and the upper template in sequence; the upper template is equipped with a first braking mechanism, and the first braking mechanism is arranged one by one correspondingly to the Corinthian columns, and the first braking mechanism is used to lock the Corinthian columns.

[0011] By adopting the above technical solution, the traditional horizontal structure of the die-casting machine is optimized and changed into a vertical die-casting machine, and equipped with a double-sided injection mechanism, which completely solves the problems of large space occupied by horizontal die-casting machines, low production efficiency and poor product quality of vertical die-casting machines.

[0012] The mold-shifting cylinder is fixedly connected to the movable template, which can drive the movable template to realize vertical mold opening and closing movements. The first brake mechanism can fix the Coring columns symmetrically arranged at the four corners of the upper template. The Coring columns are used to ensure the stability of the die-casting machine structure, and also provide guidance for the operation of the movable template, upper template and other components, thereby ensuring the accuracy of the operating direction of the movable template, upper template, etc., ensuring smooth operation and avoiding jams.

[0013] According to one implementation mode of the utility model, the lower template is equipped with an auxiliary oil cylinder, and the auxiliary oil cylinder is arranged in a one-to-one correspondence with the Corinthian column. The auxiliary oil cylinder can drive the Corinthian column to move back and forth along the length direction.

[0014] The output end of the auxiliary oil cylinder is connected to a movable block, and the fixed end of the auxiliary oil cylinder is connected to a fixed block through a connecting rod, and the Corinthian column is interspersed between the movable block and the fixed block; the operation of the auxiliary oil cylinder can drive the movable block to approach or move away from the fixed block, thereby achieving the clamping or release of the Corinthian column; the auxiliary oil cylinder can be used to pull the Corinthian column out from the inside of the upper template, the movable template, and the lower template.

[0015] Specifically, after the first brake mechanism releases the Corinthian column, the Corinthian column can move up and down along the length direction, that is, the vertical direction. The Corinthian column is locked by the auxiliary oil cylinder located on the lower template. The auxiliary oil cylinder is filled with oil, which can push the Corinthian column out of the lower template.

[0016] According to an implementation mode of the utility model, the upper template and the movable template can be locked and move up and down synchronously.

[0017] A high-pressure oil cylinder is arranged on the side of the upper template facing the movable template, and a positioning groove is arranged on the end surface of the movable template facing the upper template, and the positioning groove is arranged correspondingly to the high-pressure oil cylinder; the high-pressure oil cylinder cooperates with the movable template to increase the clamping force; the high-pressure oil cylinder and the servo valve are arranged one by one.

[0018] Four high-pressure oil cylinders are symmetrically arranged on the upper mold plate. When high-pressure mold clamping is performed, the positions of the four high-pressure oil cylinders move synchronously, pushing the movable mold plate to move toward the lower mold plate to form a clamping force.

[0019] By adding a separate high-frequency response proportional servo valve in the control oil circuit of each high-pressure cylinder and cooperating with the control algorithm of four-cylinder synchronous control in the controller, it is possible to realize the synchronous operation of multiple high-pressure cylinders and ensure that the accuracy error of each high-pressure cylinder is controlled within ±1mm.

[0020] According to an implementation mode of the utility model, the movable template is a box-type structure, and a plurality of high-pressure oil cylinders are evenly dispersedly arranged on the end surface of the upper template.

[0021] The movable template is set to a box-type structure design, and the resulting clamping force can be evenly distributed on the four parting surfaces of the injection mold. Compared with the traditional machine-hinged clamping structure, this clamping structure can provide a more uniform clamping force on super-large die-casting machines.

[0022] According to an embodiment of the utility model, a baffle is arranged between the lower mold plate and the injection mechanism, the baffle is provided with a through hole, the connecting tube is arranged corresponding to the through hole, and the diameter of the through hole is larger than the outer diameter of the connecting tube.

[0023] Therefore, the baffle can prevent the metal liquid inside the injection mechanism from splashing onto the surface of the injection mold, movable template, upper template, lower template, etc. during operation, thereby avoiding damage to the surface of the die-casting machine by the high-temperature metal liquid and ensuring the stability of the die-casting structure.

[0024] According to one embodiment of the utility model, the injection mechanism cooperates with the lifting mechanism, the lifting mechanism includes an injection stand and an injection slide, the injection stand is provided with a vertically extending slide, the injection slide is movably cooperated with the slide, and the injection slide can move back and forth up and down along the slide under the drive of the oil cylinder; the injection mechanism is fixedly connected to the injection slide.

[0025] As a result, the injection mechanism can move up and down on the side of the injection mold, thereby improving the compatibility of the device with injection molds of different specifications.

[0026] Therefore, the utility model is a vertical double-side injection die-casting machine with a simple structure, easy operation and maintenance, accurate and stable mold locking, and helpful to prolong service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a vertical double-sided injection die-casting machine according to Example 1 of the utility model;

[0028] Figure 2 for Figure 1 A schematic diagram of a clamping structure of a vertical double-side injection die casting machine is shown;

[0029] Figure 3 for Figure 2 A schematic diagram of a partial assembly structure of a movable template shown;

[0030] Figure 4 for Figure 3 A partial enlarged structural diagram of the middle A part;

[0031] Figure 5 for Figure 2 A schematic diagram of a partial assembly structure of the upper template shown;

[0032] Figure 6 for Figure 2 A schematic diagram of the cross-sectional structure of the upper template shown;

[0033] Figure 7 for Figure 6 A schematic diagram of the partial enlarged structure of the middle B part;

[0034] Figure 8 for Figure 2 A schematic diagram of the cross-sectional structure of the lower template shown;

[0035] Fig. 9 It is a structural schematic diagram of the injection mechanism of the vertical double-sided injection die-casting machine of Example 2 of the utility model;

[0036] Fig.10 for Fig. 9 Schematic diagram of the partial enlarged structure of part C in the middle.

[0037] Figure numbers: base 10; lower template 11; movable template 12; upper template 13; mold shifting cylinder 131; die-casting mold 14; column 15; mold shifting cylinder 16; injection mechanism 18; connecting pipe 19; first brake mechanism 20; brake pad 21; opening and closing cylinder 22; auxiliary cylinder 23; movable block 24; fixed block 25; second brake mechanism 30; fixed brake pad 31; movable brake pad 32; brake cylinder 33; positioning groove 41; high-pressure cylinder 42; servo valve 43; baffle 51; through hole 52; injection stand 53; injection slide 54; slide groove 55. DETAILED DESCRIPTION

[0038] The technical solution of the utility model is further described in detail below in combination with the specific implementation mode and the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0039] Example 1

[0040] Figure 1~Figure 3 A vertical double-side injection die-casting machine according to an embodiment of the utility model is schematically shown. As shown in the figure, the device includes a base 10, and a lower mold plate 11, a movable mold plate 12 and an upper mold plate 13 are arranged in sequence from bottom to top on the upper side of the base 10, and the three are arranged correspondingly, and a vertically arranged corinthian column 15 passes through the four corners of the lower mold plate 11, the movable mold plate 12 and the upper mold plate 13 in sequence to form the main structure of the die-casting machine.

[0041] An injection mold is arranged between the movable template 12 and the lower template 11, and the injection mold and the lower template 11 are detachable and matched; injection mechanisms 18 are symmetrically arranged on both sides of the injection mold; a connecting pipe 19 is arranged at the output end of the injection mechanism 18, and metal liquid can be injected into the interior of the injection mold through the connecting pipe 19, and the injection mold and the connecting pipe 19 are detachable and matched; injection holes are opened on both sides of the injection mold, and the injection holes and the connecting pipe 19 are arranged correspondingly.

[0042] The upper template 13 is provided with a first brake mechanism 20, which is arranged one-to-one with the Corinthian column 15, and is used to lock the Corinthian column 15. Further, the first brake mechanism 20 includes two brake pieces 21 arranged opposite to each other, and the brake pieces 21 are arranged one-to-one with the opening and closing oil cylinder 22, and the operation of the opening and closing oil cylinder 22 can drive the two brake pieces 21 to approach or move away from each other; the two brake pieces 21 arranged opposite to each other are arranged around the outside of the Corinthian column 15, that is, the Corinthian column 15 is inserted in the space between the two brake pieces 21, and the two brake pieces 21 are close to each other to clamp the Corinthian column 15.

[0043] The lower template 11 is equipped with an auxiliary oil cylinder 23, and the auxiliary oil cylinder 23 is arranged in a one-to-one correspondence with the Corinthian column 15. The auxiliary oil cylinder 23 can drive the Corinthian column 15 to move back and forth along the length direction.

[0044] The output end of the auxiliary oil cylinder 23 is connected to the movable block 24, and the fixed end of the auxiliary oil cylinder 23 is connected to the fixed block 25 through a connecting rod. The Corinthian column 15 is inserted between the movable block 24 and the fixed block 25; the operation of the auxiliary oil cylinder 23 can drive the movable block 24 to approach or move away from the fixed block 25, thereby achieving the clamping or release of the Corinthian column 15; the auxiliary oil cylinder 23 can be used to pull the Corinthian column 15 out from the inside of the upper template 13, the movable template 12, and the lower template 11.

[0045] Specifically, after the first brake mechanism 20 releases the coring column 15, the coring column 15 can move up and down along the length direction, that is, the vertical direction, and the coring column 15 is locked by the auxiliary oil cylinder 23 located on the lower template 11. The auxiliary oil cylinder 23 is filled with oil, which can push the coring column 15 out of the lower template 11.

[0046] The top of the movable template 12 is connected to the output end of the mold shifting cylinder 16. The operation of the mold shifting cylinder 16 can drive the movable template 12 to move up and down, so as to complete the mold locking and mold opening actions. The mold shifting cylinder 16 is fixedly connected to the movable template 12, and can drive the movable template 12 to realize the mold opening and closing actions in the vertical direction. The first brake mechanism 20 can fix the Corinthian columns 15 symmetrically arranged at the four corners of the upper template 13. The Corinthian columns 15 are used to ensure the stability of the die-casting machine structure, and also provide a guiding role for the operation of the movable template 12, the upper template 13 and other components, so as to ensure the accuracy of the operation direction of the movable template 12, the upper template 13, etc., and ensure smooth operation and avoid jamming.

[0047] The upper template 13 and the movable template 12 can be locked and move up and down synchronously.

[0048] The end surface of the movable template 12 is configured with a positioning groove 41 , and the end surface of the upper template 13 is configured with a positioning boss. The positioning groove 41 is arranged corresponding to the positioning boss, and the positioning boss can be embedded in the positioning groove 41 .

[0049] A second brake mechanism 30 is provided inside the positioning groove 41, which is used to lock or release the movable template 12 and the upper template 13. The second brake mechanism 30 includes a fixed brake piece 31 and a movable brake piece 32, which are correspondingly arranged and are both arranged inside the positioning groove 41; the second brake mechanism 30 also includes a brake cylinder 33, which can drive the movable brake piece 32 to move back and forth, so that it approaches or moves away from the fixed brake piece 31, thereby clamping or releasing the positioning boss.

[0050] A high-pressure oil cylinder 42 is arranged on the side of the upper template 13 facing the movable template 12, and the high-pressure oil cylinder 42 is arranged corresponding to the positioning groove 41; the high-pressure oil cylinder 42 cooperates with the movable template 12 to increase the clamping force; the high-pressure oil cylinder 42 and the servo valve 43 are arranged one by one.

[0051] Four high-pressure oil cylinders 42 are symmetrically arranged on the upper template 13, and multiple high-pressure oil cylinders 42 are evenly dispersed on the end surface of the upper template 13. When high-pressure clamping is performed, the positions of the four high-pressure oil cylinders 42 move synchronously, pushing the movable template 12 to move toward the lower template 11 to form a clamping force.

[0052] By adding a separate high-frequency response proportional servo valve 43 in the control oil circuit of each high-pressure cylinder 42 and cooperating with the control algorithm of four-cylinder synchronous control in the controller, it is possible to realize the synchronous operation of multiple high-pressure cylinders 42 and ensure that the precision error of each high-pressure cylinder 42 is controlled within ±1mm, thereby ensuring the stability of the movable template 12 during operation, avoiding tilting or misalignment of the movable template 12 during the clamping process, and improving its parallelism with the lower template 11.

[0053] The movable template 12 is set to a box-type structure design, and the resulting clamping force can be evenly distributed on the four parting surfaces of the injection mold. Compared with the traditional machine-hinged clamping structure, this clamping structure can provide a more uniform clamping force on super-large die-casting machines.

[0054] In this embodiment, the traditional horizontal structure of the die-casting machine is optimized and changed into a vertical die-casting machine, and is equipped with a double-sided injection mechanism 18, which completely solves the problems of large space occupation of horizontal die-casting machines, low production efficiency and poor product quality of vertical die-casting machines.

[0055] Example 2

[0056] Figure 4~Figure 6 A vertical double-side injection die casting machine according to another embodiment of the utility model is schematically shown, which is different from Example 1 in that:

[0057] A baffle plate 51 is disposed between the lower mold plate 11 and the injection mechanism 18 . The baffle plate 51 is provided with a through hole 52 . The connecting tube 19 is disposed corresponding to the through hole 52 , and the diameter of the through hole 52 is greater than the outer diameter of the connecting tube 19 .

[0058] Therefore, the baffle 51 can be used to prevent the metal liquid inside the injection mechanism 18 from splashing onto the surfaces of the injection mold, the movable template 12, the upper template 13, the lower template 11, etc. during operation, thereby avoiding damage to the surface of the die-casting machine by the high-temperature metal liquid and ensuring the stability of the die-casting structure.

[0059] The injection mechanism 18 cooperates with the lifting mechanism, and the lifting mechanism includes an injection stand 53 and an injection slide 54. The injection stand 53 is provided with a vertically extending slide 55, and the injection slide 54 is movably cooperated with the slide 55. The injection slide 54 can move up and down along the slide 55 under the drive of the oil cylinder; the injection mechanism 18 is fixedly connected to the injection slide 54.

[0060] Thus, the injection mechanism 18 can move up and down on the side of the injection mold, improving the compatibility of the device with injection molds of different specifications. In addition, after the mold is replaced, when the injection position is changed, the prior art usually manually loosens the injection seat pressure plate, and then adjusts the injection position by hydraulic lifting. In this embodiment, the injection mechanism 18 cooperates with the lifting mechanism to realize automatic lifting and adjustment, which accelerates the efficiency of mold replacement, shortens the adjustment time and improves production capacity.

[0061] The conventional operations in the operating steps of the present invention are well known to those skilled in the art and will not be described in detail here.

[0062] The embodiments described above provide a detailed description of the technical solution of the utility model. It should be understood that the above is only a specific embodiment of the utility model and is not intended to limit the utility model. Any modifications, supplements or similar substitutions made within the scope of the principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A vertical double-sided injection die-casting machine, comprising a lower die plate (11), a movable die plate (12) and an upper die plate (13) arranged in sequence from bottom to top, wherein an injection die is arranged between the movable die plate (12) and the lower die plate (11); characterized in that: Injection mechanisms (18) are symmetrically arranged on both sides of the injection mold; a connecting tube (19) is arranged at the output end of the injection mechanism (18), and the injection mold and the connecting tube (19) are detachably matched.

2. The vertical double-side injection die casting machine according to claim 1, characterized in that: A vertically arranged coring column (15) passes through the lower template (11), the movable template (12) and the upper template (13) in sequence; the upper template (13) is provided with a first brake mechanism (20), the first brake mechanism (20) is arranged in a one-to-one correspondence with the coring column (15), and the first brake mechanism (20) is used to lock the coring column (15).

3. The vertical double-side injection die casting machine according to claim 2, characterized in that: The lower template (11) is equipped with an auxiliary oil cylinder (23), and the auxiliary oil cylinder (23) is arranged in a one-to-one correspondence with the Corinthian column (15). The auxiliary oil cylinder (23) can drive the Corinthian column (15) to move back and forth along the length direction.

4. The vertical double-side injection die casting machine according to claim 1, characterized in that: The upper template (13) and the movable template (12) can be locked and move up and down synchronously; A high-pressure oil cylinder (42) is arranged on a side of the upper template (13) facing the movable template (12); a positioning groove (41) is arranged on an end surface of the movable template (12) facing the upper template (13); the positioning groove (41) is arranged corresponding to the high-pressure oil cylinder (42); the high-pressure oil cylinder (42) cooperates with the movable template (12); and the high-pressure oil cylinder (42) and the servo valve (43) are arranged one-to-one.

5. The vertical double-side injection die casting machine according to claim 4, characterized in that: The movable template (12) is a box-type structure, and a plurality of high-pressure oil cylinders (42) are evenly dispersedly arranged on the end surface of the upper template (13).

6. The vertical double-side injection die casting machine according to claim 1, characterized in that: A baffle (51) is arranged between the lower mold plate (11) and the injection mechanism (18), the baffle (51) is provided with a through hole (52), the connecting tube (19) is arranged corresponding to the through hole (52), and the diameter of the through hole (52) is greater than the outer diameter of the connecting tube (19).

7. The vertical double-side injection die casting machine according to claim 1, characterized in that: The injection mechanism (18) cooperates with the lifting mechanism, and the lifting mechanism comprises an injection stand (53) and an injection slide (54). The injection stand (53) is provided with a vertically extending slide groove (55), and the injection slide (54) is movably matched with the slide groove (55); the injection mechanism (18) is fixedly connected to the injection slide (54).

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