Integrated double shot die casting mold

Abstract

The invention relates to an integrated double-injection die-casting mold, and belongs to the technical field of die-casting molds. A rotating block is provided, and the rotating block and an injection tube jointly fill the internal space of an injection cavity, so that the bending part of the injection tube is connected to the rotating block. When the rotating block and the injection tube are jointly installed in a tail plate, the side wall of the bending part of the injection tube is completely fitted with the rotating block and the tail plate, thereby improving the structural strength of the side wall of the bending part of the injection tube. When the injection assembly arranged in the injection tube slides along the setting direction of the injection tube, it causes an impact on the bending part of the injection tube, and the bending part of the injection tube cannot be deformed, thereby ensuring the normal operation of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of die casting moulds, and in particular relates to an integrated double-injection die casting mould. Background Art

[0002] A die-casting machine is a machine used for pressure casting, and is commonly used in the production and processing of automotive parts. Under the action of pressure, the die-casting machine can hydraulically inject molten metal into the mold for cooling and forming, and a solid metal casting can be obtained after the mold is opened. With the development of die-casting technology, die-casting machines are gradually used in some die-casting production such as integrated automobile bodies. Due to the large size of the parts that need to be die-cast, the die-casting machine generally adopts a double-shot system when in use, that is, the die-casting machine includes a pair of shot pipes, which can effectively reduce the stroke of the metal liquid to completely fill the mold cavity, thereby improving the molding quality of large parts.

[0003] For example, the invention patent with patent application publication number: CN116532626A discloses a double-shot system and a die-casting machine, wherein the double-shot system includes a pair of shot tubes and a pair of shot assemblies; the shot tubes are bent, and the two shot tubes are respectively connected to the tail plate with intervals and rotation, and the shot assemblies are suitable for sealing and sliding cooperation with the inner cavity of the corresponding shot tube; when the shot operation is performed, the shot assembly is suitable for injecting the molten metal along the inner cavity of the shot tube into the cavity of the mold installed on one side of the tail plate; when adapting to molds of different sizes, the shot assembly is suitable for driving the shot tube to rotate around the avoidance groove.

[0004] Based on the search of the publication number of the above patent application and the shortcomings found therein:

[0005] After the existing bent injection tube is matched with the tail plate, during the operation, part of the side wall of the bent part of the injection tube is not completely in contact with the tail plate, resulting in low structural strength of the side wall of the bent part of the injection tube. When the injection assembly arranged in the injection tube slides along the setting direction of the injection tube, it will cause impact on the bent part of the injection tube, thereby causing deformation of the bent part of the injection tube, thereby affecting the normal operation of the device. Summary of the invention

[0006] In order to solve the problem that after the existing bent injection tube and the tail plate are well matched, during the working process, part of the side wall of the bent part of the injection tube is not completely fitted with the tail plate, resulting in low structural strength of the side wall at the bent part of the injection tube. When the injection assembly arranged in the injection tube slides along the setting direction of the injection tube, it will cause impact on the bent part of the injection tube, thereby causing deformation of the bent part of the injection tube, thereby affecting the normal operation of the device, the present invention provides an integrated double-injection die-casting mold.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] An integrated double-shot die-casting mold comprises a tail plate and two groups of shot assemblies, wherein the tail plate is provided with two shot slots, the two shot slots are symmetrically arranged in the tail plate, the two shot slots are matched with the two groups of shot assemblies in a one-to-one correspondence, and any shot assembly is slidably arranged in the corresponding shot slot; the shot slot comprises an inlet, an outlet and a shot cavity, the inlet and the outlet are respectively arranged on two opposite end surfaces of the tail plate, the central axis of the inlet and the central axis of the outlet are parallel to each other and are spaced a certain distance apart, and the two ends of the shot cavity are respectively connected to the inlet and the outlet;

[0009] The injection assembly also includes an injection tube and a rotating block. The injection tube is slidably disposed in a corresponding injection cavity. One end of the rotating block is connected to a side wall of the injection tube. The injection tube and the rotating block together fill the internal space of the injection cavity.

[0010] As a preferred technical solution of the present invention, the injection cavity includes a small circular ring cavity, an increasing cavity and a large circular ring cavity in sequence from the injection port to the injection port, one end of the large circular ring cavity is interconnected with the injection port, one end of the small circular ring cavity is interconnected with the injection port, and the central axis of the small circular ring cavity coincides with the central axis of the injection port, and the inner diameter of the increasing cavity gradually increases from the injection port to the injection port, and the central axis of the injection cavity coincides with the central axis of the injection port.

[0011] As a preferred technical solution of the present invention, the injection tube includes an input tube, an output tube and a bending tube, the input tube is coaxially connected to the injection port, the output tube is coaxially connected to the injection port, the two ends of the bending tube are respectively interconnected with the input tube and the output tube, the connection between the input tube and the bending tube is in the incremental cavity, the connection between the output tube and the bending tube is in the large annular cavity, and the injection tube is connected to one end of the injection cavity.

[0012] As a preferred technical solution of the present invention, in the direction from the incident port to the exit port, the incremental chamber comprises a large incremental chamber and a small incremental chamber coaxially arranged in sequence, the large incremental chamber fits with the straight inclined side wall of the bending tube, the small incremental chamber fits with the side wall of the bending connection between the bending tube and the input tube, and the maximum horizontal distance between the small incremental chamber and the side wall of the bending tube is 1 / 5-1 / 3 of the inner diameter of the bending tube.

[0013] As a preferred technical solution of the present invention, the rotating block is located in the injection cavity, the rotating block is connected to the side wall of the injection tube, one end face of the rotating block is flush with the end face of the outlet, and the other end face of the rotating block is flush with the connecting end face of the large incremental cavity and the small incremental cavity.

[0014] As a preferred technical solution of the present invention, the injection assembly also includes a deformation block, and a slot is provided at one end of the rotating block away from the injection tube. The deformation block is embedded in the slot, and one end of the deformation block close to the injection cavity is parallel to the side wall of the injection cavity. The deformation block can lock or release its abutment with the side wall of the injection cavity.

[0015] As a preferred technical solution of the present invention, the injection assembly also includes a flexible sealing ring filled with hydraulic oil, the flexible sealing ring is connected to the rotating block, and the flexible sealing ring is filled in the small incremental cavity, and the flexible sealing ring is fitted with the side wall of the bent connection between the bending tube and the input tube.

[0016] As a preferred technical solution of the present invention, it also includes two groups of mounting components, the two groups of mounting components are matched with the two injection slots in a one-to-one correspondence, and any of the mounting components is connected to the corresponding injection slot;

[0017] The mounting assembly includes a mounting shell with a hollow interior and a plurality of mounting screws. The mounting shell is mounted on the end surface of the tail plate. The mounting shell and the tail plate cooperate to form a plurality of mounting slots. The plurality of mounting slots are matched one-to-one with the plurality of mounting screws. Any of the mounting screws is installed in the corresponding mounting slot.

[0018] As a preferred technical solution of the present invention, the mounting assembly further includes an energy storage unit, an abutment block and a connecting block, the tail plate is further provided with a connecting groove, the connecting groove is coaxially connected with any of the mounting slots, the energy storage unit is slidably arranged in the connecting groove, one end of the energy storage unit is abutted against any of the mounting screws, the tail plate is further provided with an abutment groove, the abutment groove is respectively connected with the connecting groove and the small incremental cavity, the abutment block is slidably arranged in the abutment groove, the two ends of the connecting block are respectively hinged with the other end of the energy storage unit and the abutment block, and the abutment block extends into the small incremental cavity;

[0019] The energy storage unit includes a top block, an energy storage spring and a bottom block, the top block and the bottom block are coaxially and slidably arranged in the connecting groove, the top block is located at the top of the bottom block, the energy storage spring is arranged between the top block and the bottom block, the two ends of the energy storage spring are respectively connected to the top block and the bottom block, the top block is abutted against the mounting screws, and the two ends of the connecting block are respectively hinged to the abutting block and the bottom block.

[0020] As a preferred technical solution of the present invention, the injection unit includes an injection rod and a plurality of injection balls, the plurality of injection balls are hingedly arranged with each other, any of the injection balls is connected to one end of the injection rod, and the injection rod and the plurality of injection balls slide together in the corresponding injection tube.

[0021] The beneficial effects of the present invention are:

[0022] The present invention provides a rotating block, and the rotating block and the injection tube jointly fill the internal space of the injection cavity, so that the bending part of the injection tube is connected to the rotating block. When the rotating block and the injection tube are jointly installed in the tail plate, the side wall of the bending part of the injection tube is completely fitted with the rotating block and the tail plate, thereby improving the structural strength of the side wall of the bending part of the injection tube. When the injection assembly arranged in the injection tube slides along the setting direction of the injection tube, it causes an impact on the bending part of the injection tube, and the bending part of the injection tube cannot be deformed, thereby ensuring the normal operation of the device. The present invention solves the problem that after the existing bent injection tube and the tail plate are well matched, during the working process, part of the side wall of the bending part of the injection tube is not completely fitted with the tail plate, resulting in low structural strength of the side wall of the bending part of the injection tube. When the injection assembly arranged in the injection tube slides along the setting direction of the injection tube, it causes an impact on the bending part of the injection tube, thereby causing the bending part of the injection tube to be deformed, thereby affecting the normal operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 It is an internal cross-sectional view of the integrated double-shot die-casting mold of the present invention;

[0025] Figure 2 It is an internal cross-sectional view of the tail plate of the integrated double-shot die-casting mold of the present invention;

[0026] Figure 3 It is a composition diagram of the injection assembly of the integrated double-injection die-casting mold of the present invention;

[0027] Figure 4 For the present invention Figure 1 A magnified image of point A;

[0028] Figure 5 This is a composition diagram of the energy storage unit of the integrated double-injection die-casting mold of the present invention.

[0029] Description of main symbols

[0030] In the figure: 1, tail plate; 101, injection groove; 1011, injection port; 1012, injection port; 1013, injection cavity; 102, abutment groove; 103, connecting groove; 2, injection assembly; 201, injection tube; 2011, input tube; 2012, output tube; 2013, bending tube; 202, rotating block; 203, deformation block; 204, flexible sealing ring; 205, injection rod; 206, injection ball; 3, small annular cavity; 4, incremental cavity; 401, large incremental cavity; 402, small incremental cavity; 5, large annular cavity; 6, installation assembly; 601, installation shell; 602, installation screw; 603, energy storage unit; 6031, top block; 6032, energy storage spring; 6033, bottom block; 604, connecting block; 605, abutment block. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0032] See also Figure 1-5The present embodiment provides an integrated double-shot die-casting mold, including a tail plate 1 and two groups of shot assemblies 2. The tail plate 1 is provided with two shot slots 101, and the two shot slots 101 are symmetrically arranged in the tail plate 1. The two shot slots 101 are matched with the two groups of shot assemblies 2 in a one-to-one correspondence, and any shot assembly 2 is slidably arranged in the corresponding shot slot 101; the shot slot 101 includes an inlet 1011, an outlet 1012 and a shot cavity 1013, and the inlet 1011 and the outlet 1012 are respectively arranged on two opposite end surfaces of the tail plate 1, and the central axis of the inlet 1011 The central axes of the injection port 1012 are parallel to each other and are spaced a certain distance apart. The two ends of the injection cavity 1013 are connected to the injection port 1011 and the injection port 1012 respectively. The injection assembly 2 also includes an injection tube 201, a rotating block 202 and an injection unit. The injection tube 201 is slidably arranged in the corresponding injection cavity 1013. The injection unit is slidably arranged in the injection tube 201. One end of the rotating block 202 is connected to the side wall of the injection tube 201. The injection tube 201 and the rotating block 202 jointly fill the internal space of the injection cavity 1013. In this solution, the rotating block 202 is provided. The rotating block 202 and the injection tube 201 jointly fill the internal space of the injection cavity 1013, so that the bending part of the injection tube 201 is connected to the rotating block 202. When the rotating block 202 and the injection tube 201 are jointly installed in the tail plate 1, the side wall of the bending part of the injection tube 201 is completely in contact with the side wall of the rotating block 202 and the tail plate 1, thereby improving the structural strength of the side wall of the bending part of the injection tube 201. When the injection unit arranged in the injection tube 201 slides along the setting direction of the injection tube 201, it will not cause impact on the bending part of the injection tube 201, and it will not be able to make The bending part of the injection tube 201 is deformed to ensure the normal operation of the device, and solves the problem that after the existing bent injection tube 201 is matched with the tail plate 1, during the operation, part of the side wall of the bending part of the injection tube 201 is not completely in contact with the tail plate 1, resulting in low structural strength of the side wall of the bending part of the injection tube 201. When the injection unit arranged in the injection tube 201 slides along the setting direction of the injection tube 201, it will cause an impact on the bending part of the injection tube 201, thereby causing the bending part of the injection tube 201 to deform, thereby affecting the normal operation of the device.

[0033] Specifically, the injection cavity 1013 of the present embodiment includes a small circular cavity 3, an increasing cavity 4 and a large circular cavity 5 in sequence from the incident port 1011 to the exit port 1012. One end of the large circular cavity 5 is interconnected with the exit port 1012, one end of the small circular cavity 3 is interconnected with the incident port 1011, and the central axis of the small circular cavity 3 coincides with the central axis of the incident port 1011. From the incident port 1011 to the exit port 1012, the inner diameter of the increasing cavity 4 gradually increases, and the central axis of the injection cavity 1013 coincides with the central axis of the incident port 1011. The structural composition of the injection cavity 1013 is described here.

[0034] In addition, the specific structure of the injection tube 201 of the present scheme is as follows: the injection tube 201 includes an input tube 2011, an output tube 2012 and a bending tube 2013, the input tube 2011 is coaxially connected to the injection port 1011, the output tube 2012 is coaxially connected to the injection port 1012, the two ends of the bending tube 2013 are respectively interconnected with the input tube 2011 and the output tube 2012, the connection between the input tube 2011 and the bending tube 2013 is in the incremental cavity 4, the connection between the output tube 2012 and the bending tube 2013 is in the large circular cavity 5, and the injection tube 201 is connected to the side wall of one end of the injection cavity 1013. In addition, it should be noted that when the input tube 2011 rotates around the central axis of the small circular cavity 3, the side wall of one end of the output tube 2012 always fits with the side wall of the large circular cavity 5; in addition, it should be noted that the inlet 1011 and the outlet 1012 of the present solution are defined for the convenience of defining the structure of the injection tube 201, and do not have an actual structure. The inner diameter of the inlet 1011 is the same as the inner diameter of the small circular cavity 3; while the inner diameter of the outlet 1012 is smaller than the inner diameter of the large circular cavity 5, and the outlet 1012 is smaller than the inner diameter of the large circular cavity 5. The inner diameter of 012 is always tangent to the inner diameter of the large circular cavity 5; through such an arrangement, when the injection tube 201 and the injection cavity 1013 cooperate with each other, the side wall of one end of the injection tube 201 of this scheme will be arranged in contact with the side wall in the injection cavity 1013, so that the side wall structure of the injection tube 201 here is supported by the side wall in the injection cavity 1013, thereby improving the structural strength of the side wall of the injection tube 201 here; and since the side wall of the other end of the injection tube 201 has no support, the structural strength of the side wall of the injection tube 201 without support is low.

[0035] Based on this, in order to solve the problem that the other end side wall of the injection tube 201 has no supporting end, the present solution is provided with a rotating block 202, and one end of the rotating block 202 is arranged to fit the side wall of the injection tube 201, so that the rotating block 202 and the side wall of the injection cavity 1013 jointly wrap the side wall of the injection tube 201, provide support for the side wall of the injection tube 201, and thereby improve the structural strength of the side wall of the injection tube 201.

[0036] It is worth noting that in order to ensure that the rotating block 202 of the present scheme can be smoothly installed in the injection cavity 1013, from the inlet 1011 to the outlet 1012, the incremental cavity 4 includes a large incremental cavity 401 and a small incremental cavity 402 coaxially arranged in sequence, the large incremental cavity 401 fits with the straight inclined side wall of the bending tube 2013, the small incremental cavity 402 fits with the side wall of the bending connection between the bending tube 2013 and the input tube 2011, and the maximum horizontal distance between the small incremental cavity 402 and the side wall of the bending tube 2013 is 1 / 5-1 / 3 of the inner diameter of the bending tube 2013. In addition, the rotating block 202 of the present scheme is located in the injection cavity 1013, the rotating block 202 is connected to the side wall of the injection tube 201, one end face of the rotating block 202 is flush with the end face of the outlet 1012, and the other end face of the rotating block 202 is flush with the connecting end faces of the large incremental cavity 401 and the small incremental cavity 402. Such an arrangement ensures that the rotating block 202 is installed in the injection cavity 1013 without causing structural interference.

[0037] The above embodiments have made it clear that one end of the rotating block 202 of the present scheme is connected to the side wall of the injection tube 201. Since the injection tube 201 of the present scheme needs to be rotated in the injection cavity 1013, in order to facilitate the injection tube 201 of the present scheme to rotate when the die-casting device is not working, it is necessary to ensure that the injection tube 201 and the injection cavity 1013 cannot slide relative to each other after the die-casting device starts working; based on this, the injection assembly 2 of the present scheme also includes a deformation block 203, and a slot is provided at one end of the rotating block 202 away from the injection tube 201, and the deformation block 203 is embedded in the slot, and the end of the deformation block 203 close to the injection cavity 1013 is parallel to the side wall of the injection cavity 1013; when the die-casting device is not working, the temperature in the injection cavity 1013 is low, As the temperature of the deformation block 203 decreases, the deformation block 203 shrinks in the slot, so that the rotating block 202 and the side wall of the injection cavity 1013 do not contact each other, ensuring that the injection tube 201 can rotate normally in the injection cavity 1013; when the die-casting device starts to work, the temperature in the injection cavity 1013 increases, and the deformation block 203 begins to expand and extend out of the slot due to the increase in temperature, so that the deformation block 203 and the side wall of the injection cavity 1013 are abutted against each other, and the friction between the rotating block 202 and the injection cavity 1013 is increased to ensure that the injection tube 201 cannot slide relative to the injection cavity 1013 after the die-casting device is working; in this way, the deformation block 203 can be locked or released from the abutment relationship with the side wall of the injection cavity 1013.

[0038] Furthermore, since one end face of the rotating block 202 of the present scheme is flush with the connecting end faces of the large incremental chamber 401 and the small incremental chamber 402, such a setting indicates that the side wall of the injection tube 201 located in the small incremental chamber 402 is not fitted with the rotating block 202. In order to improve the structural strength of this part of the side wall, the injection assembly 2 of the present scheme also includes a flexible sealing ring 204 filled with hydraulic oil. The flexible sealing ring 204 is connected to the rotating block 202, and the flexible sealing ring 204 is filled and set in the small incremental chamber 402. The flexible sealing ring 204 is fitted with the side wall of the bending connection between the bending tube 2013 and the input tube 2011. Due to the flexible structural characteristics of the flexible sealing ring 204, the flexible sealing ring 204 is filled in the small incremental cavity 402, so that the flexible sealing ring 204 and the side wall of the injection tube 201 can be arranged in close contact with each other. Since the flexible sealing ring 204 is filled with hydraulic oil, the setting of the hydraulic oil can increase the supporting force of the flexible sealing ring 204 on the side wall of the injection tube 201, and finally improve the structural strength of the side wall of the injection tube 201 located in the small incremental cavity 402.

[0039] Specifically, the present solution also includes two groups of mounting components 6, which are matched with two injection slots 101 in one-to-one correspondence, and any mounting component 6 is interconnected with the corresponding injection slot 101; the mounting component 6 includes a mounting shell 601 with a hollow interior and a plurality of mounting screws 602, the mounting shell 601 is mounted on the end surface of the tail plate 1, the mounting shell 601 is coaxially connected with the injection port 1011 of the injection slot 101, the mounting shell 601 and the tail plate 1 cooperate to form a plurality of mounting slots, and the plurality of mounting slots are matched with a plurality of mounting screws 602 in one-to-one correspondence, and any mounting screw 602 is installed in the corresponding mounting slot. It is worth noting that after the mounting shell 601 is installed on the tail plate 1, it cannot move relative to the tail plate 1, and the injection tube 201 is also the same, and after the injection tube 201 and the injection cavity 1013 cooperate with each other, the injection tube 201 and the injection cavity 1013 cannot move relative to each other.

[0040] Furthermore, the mounting assembly 6 of the present solution further includes an energy storage unit 603, an abutment block 605 and a connection block 604. The tail plate 1 is further provided with a connection groove 103, which is coaxially connected to any mounting slot hole. The energy storage unit 603 is slidably arranged in the connection groove 103, and one end of the energy storage unit 603 is abutted against any mounting screw 602. The tail plate 1 is further provided with an abutment groove 102, which is respectively connected to the connection groove 103 and the small incremental cavity 402. The abutment block 605 is slidably arranged in the abutment groove 102, and the two ends of the connection block 604 are respectively hingedly connected to the other end of the energy storage unit 603 and the abutment block 605. The abutment block 605 extends into the small incremental cavity 402; the energy storage unit 603 includes a top block 6031, an energy storage spring 6032 and a bottom block 6033, the top block 6031 and the bottom block 6033 are coaxially slidably arranged in the connecting groove 103, the top block 6031 is located at the top of the bottom block 6033, the energy storage spring 6032 is arranged between the top block 6031 and the bottom block 6033, and the two ends of the energy storage spring 6032 are respectively connected to the top block 6031 and the bottom block 6033, the top block 6031 is abutted against the mounting screw 602, and the two ends of the connecting block 604 are respectively hinged to the abutment block 605 and the bottom block 6033. It is necessary to explain here the purpose of setting the abutment block 605 and the energy storage unit 603 in this scheme. At the beginning of the die-casting device, the temperature of the injection cavity 1013 is relatively low, and the abutment block 605 extends into the small incremental cavity 402 to abut against the flexible sealing ring 204, thereby improving the supporting strength between the flexible sealing ring 204 and the side wall of the injection tube 201 located in the space of the small incremental cavity 402; as the working time of the die-casting device increases, the temperature in the injection cavity 1013 continues to rise, and the hydraulic oil in the flexible sealing ring 204 will expand when it encounters heat, and then the flexible sealing ring 204 will compress the abutment block 605 to move. As the abutment block 605 moves, the abutment block 605 will drive the connecting block 604 to compress the energy storage unit 603, so that the energy storage unit 603 increases the force acting on the mounting screw 602, thereby increasing the force between the locking mounting shell 601 of the mounting screw 602 and the tail plate 1, thereby avoiding the vibration generated by the injection unit during operation that may cause the mounting screw 602 to loosen.

[0041] Specifically, the injection unit of the present embodiment includes an injection rod 205 and a plurality of injection balls 206 . The plurality of injection balls 206 are hingedly arranged with each other. Any injection ball 206 is connected to one end of the injection rod 205 . The injection rod 205 and the plurality of injection balls 206 slide together in the corresponding injection tube 201 .

[0042] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. Integrated double-shot die-casting mold, characterized by: It comprises a tail plate and two groups of injection assemblies, wherein the tail plate is provided with two injection grooves, the two injection grooves are symmetrically arranged in the tail plate, the two injection grooves are matched with the two groups of injection assemblies one by one, and any injection assembly is slidably arranged in the corresponding injection groove; the injection groove comprises an injection port, an injection port and an injection cavity, the injection port and the injection port are respectively arranged on two opposite end surfaces of the tail plate, the central axis of the injection port and the central axis of the injection port are parallel to each other and are spaced a certain distance apart, and the two ends of the injection cavity are respectively connected to the injection port and the injection port; The injection assembly comprises an injection tube, a rotating block and an injection unit, wherein the injection tube is slidably disposed in a corresponding injection cavity, the injection unit is slidably disposed in the injection tube, one end of the rotating block is connected to a side wall of the injection tube, and the injection tube and the rotating block together fill the internal space of the injection cavity; The injection cavity includes a small annular cavity, an increasing cavity and a large annular cavity in sequence from the injection port to the injection port, one end of the large annular cavity is connected to the injection port, one end of the small annular cavity is connected to the injection port, and the central axis of the small annular cavity coincides with the central axis of the injection port. From the injection port to the injection port, the inner diameter of the increasing cavity increases gradually, and the central axis of the injection cavity coincides with the central axis of the injection port. The injection tube comprises an input tube, an output tube and a bending tube, wherein the input tube is coaxially connected to the injection port, the output tube is coaxially connected to the injection port, the two ends of the bending tube are respectively connected to the input tube and the output tube, the connection between the input tube and the bending tube is in the incremental cavity, the connection between the output tube and the bending tube is in the large annular cavity, and the injection tube is connected to one end of the injection cavity; In the direction from the incident port to the incident port, the incremental cavity includes a small incremental cavity and a large incremental cavity coaxially arranged in sequence, the large incremental cavity is in contact with the straight inclined side wall of the bending tube, the small incremental cavity is in contact with the side wall of the bending connection between the bending tube and the input tube, and the maximum horizontal distance between the small incremental cavity and the side wall of the bending tube is 1 / 5-1 / 3 of the inner diameter of the bending tube; The rotating block is located in the injection cavity, the rotating block is connected to the side wall of the injection tube, one end face of the rotating block is flush with the end face of the injection port, and the other end face of the rotating block is flush with the connecting end face of the large incremental cavity and the small incremental cavity; The injection assembly further comprises a deformation block, a slot is formed at one end of the rotating block away from the injection tube, the deformation block is embedded in the slot, one end of the deformation block close to the injection cavity is parallel to the side wall of the injection cavity, and the deformation block can lock or release the abutment relationship with the side wall of the injection cavity; The injection assembly also includes a flexible sealing ring filled with hydraulic oil, the flexible sealing ring is connected to the rotating block, and the flexible sealing ring is filled in the small incremental cavity. The flexible sealing ring is fitted to the side wall of the bending connection between the bending tube and the input tube.

2. The integrated double-shot die-casting mold according to claim 1, characterized in that: It also includes two groups of mounting components, the two groups of mounting components are matched with the two injection slots in a one-to-one correspondence, and any of the mounting components is communicated with the corresponding injection slot; The mounting assembly includes a mounting shell with a hollow interior and a plurality of mounting screws. The mounting shell is mounted on the end surface of the tail plate. The mounting shell is coaxially connected to the injection port of the injection slot. The mounting shell and the tail plate cooperate to form a plurality of mounting slot holes. The plurality of mounting slot holes are matched one-to-one with the plurality of mounting screws. Any of the mounting screws is installed in the corresponding mounting slot hole.

3. The integrated double-shot die-casting mold according to claim 2, characterized in that: The mounting assembly further comprises an energy storage unit, an abutment block and a connection block, the tail plate further comprises a connection groove, the connection groove is coaxially connected with any of the mounting slots, the energy storage unit is slidably disposed in the connection groove, one end of the energy storage unit is abutted against any of the mounting screws, the tail plate further comprises an abutment groove, the abutment groove is respectively connected with the connection groove and the small incremental cavity, the abutment block is slidably disposed in the abutment groove, the two ends of the connection block are respectively hingedly disposed with the other end of the energy storage unit and the abutment block, and the abutment block extends into the small incremental cavity; The energy storage unit includes a top block, an energy storage spring and a bottom block, the top block and the bottom block are coaxially and slidably arranged in the connecting groove, the top block is located at the top of the bottom block, the energy storage spring is arranged between the top block and the bottom block, the two ends of the energy storage spring are respectively connected to the top block and the bottom block, the bottom block is abutted against the mounting screws, and the two ends of the connecting block are respectively hinged to the abutting block and the top block.

4. The integrated double-shot die-casting mold according to claim 3, characterized in that: The injection unit comprises an injection rod and a plurality of injection balls, the plurality of injection balls are hingedly arranged with each other, any of the injection balls is connected to one end of the injection rod, and the injection rod and the plurality of injection balls slide together in the corresponding injection tube.

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