Double-sleeve injection integrated forming machine

Abstract

A double-set injection integrated forming machine comprises a machine body and a fixed plate arranged on the machine body, a mold is arranged on the fixed plate, an injection mechanism used for conducting metal injection on the mold is arranged on the machine body, and the injection mechanism comprises a first injection mechanism and a second injection mechanism which are the same in structure and arranged side by side. The discharging ends of the first injection mechanism and the second injection mechanism penetrate through the fixed plate and are connected to the mold; a mounting assembly for mounting the first injection mechanism and the second injection mechanism at the same time is arranged on the machine body; compared with the prior art, main supporting stress components of the two injection mechanisms are the same part, so that the center distance between the two injection mechanisms is reduced, the distance between the two pouring gates on the mold is further reduced, the injection mold is suitable for molding injection of products with different sizes and shapes, and products which cannot be molded by the existing single-screw machine table can be molded.

Description

Technical Field

[0001] The present invention relates to the technical field of metal injection molding, in particular to a double-set integrated injection molding machine. Background Art

[0002] Magnesium's specific gravity is approximately two-thirds that of aluminum and one-quarter that of iron. It is the lightest of practical metals and boasts high strength and rigidity. These properties give magnesium alloys promising applications. Due to their low density, magnesium alloys' greatest advantage lies in lightweighting, such as in lightweight automotive parts. The heavier the part, the more pronounced the advantages of using magnesium alloys. Currently, semi-solid magnesium alloy products are primarily produced using injection molding machines in conjunction with molds.

[0003] A metal injection molding (MIM) machine is the core equipment of the metal injection molding (MIM) process, combining the flexibility of plastic injection molding with the material performance advantages of powder metallurgy. It forms a green body by injecting a mixture of metal powder and a binder (the feedstock) into a precision mold. While similar in structure to a plastic injection molding machine, the requirements for wear resistance, clamping force, temperature control accuracy, and repeatability are far higher. MIM machines are key equipment for the high-volume production of highly complex, high-precision, and high-performance small metal parts, and are widely used in a variety of industries, including consumer electronics, medical devices, automobiles, and tools. Understanding their operating principles, special requirements, and role in the overall MIM process is crucial.

[0004] Chinese Patent Application No. 201720709992.4 discloses a metal-plastic co-injection molding device. The device comprises a clamping device, a two-component mold, a semi-solid metal injection unit, and an injection unit. The two-component mold is mounted on the clamping device and provided with a gate. The semi-solid metal injection unit and the injection unit are located on the same side of the gate of the two-component mold and are interconnected. The device first forms semi-solid metal in the semi-solid metal injection unit, then injects the semi-solid metal into the two-component mold to form the base portion of the product. The device then switches to a workstation where the injection unit injects plastic melt into the two-component mold to form the insert portion, ultimately producing the product. Chinese Patent Application No. 202210546411.5 discloses a dual-injection molding machine with two injection units. The dual-injection molding machine comprises a clamping device, a first injection unit, and a second injection unit. The first and second injection units each include a heating cylinder, a screw, and a screw drive unit that drives the screw. The first and second injection units are positioned symmetrically with respect to the mechanical centerline of the mold clamping unit. Furthermore, the drive system components, such as the hydraulic accumulator and electric motor, installed in the screw drive units are positioned away from the mechanical centerline.

[0005] The current magnesium alloy injection molding machines are mainly single-screw injection machines. The diameter of the screw barrel has a technical upper limit and needs to be broken through. This results in the molded products not being heavy enough. However, customers have a demand for heavy products that cannot be met. In the above-mentioned prior art, two injection mechanisms are simply placed side by side to realize a dual injection mechanism. However, in the above scheme, the two injection mechanisms inject plastic and metal respectively, and the two injection mechanisms do not inject at the same time. Instead, one mechanism can only inject after the other mechanism is finished. The injection efficiency of this scheme is low, and the center distance between the two injection mechanisms is large, which makes the distance between the two gates of the product very large. This is only suitable for long strip products and is not suitable for the injection of smaller products. The scope of application is narrow. Summary of the Invention

[0006] The present invention aims to overcome the defects in the above-mentioned prior art and provide a double-set injection molding machine that can simultaneously inject metal with two injection mechanisms and has a smaller spacing between the two injection mechanisms, so that the spacing between the product inlet gates is smaller, and is suitable for the injection of products of different sizes.

[0007] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solution: a double-set injection molding machine, including a fuselage and a fixed plate arranged on the fuselage, a mold is arranged on the fixed plate, and an injection mechanism for injecting metal into the mold is provided on the fuselage, the injection mechanism is a first injection mechanism and a second injection mechanism with the same structure and arranged in parallel, and the discharge ends of the first injection mechanism and the second injection mechanism are both connected to the mold through the fixed plate; the fuselage is provided with an installation component for simultaneously installing the first injection mechanism and the second injection mechanism.

[0008] As a preferred solution of the present invention, the injection mechanism includes a material tube assembly and a screw assembly arranged in the material tube assembly, and one end of the screw assembly is connected to an injection cylinder assembly that drives the screw assembly to move axially and a material storage assembly that drives the screw assembly to rotate.

[0009] As a preferred embodiment of the present invention, the material pipe assembly includes a nozzle, a front barrel, a front injection material pipe and a rear injection material pipe connected in sequence, the screw assembly is arranged in the front injection material pipe and the rear injection material pipe, a barrel fixing plate is provided between the front injection material pipe and the rear injection material pipe, a heat insulation plate is provided on the barrel fixing plate, and the nozzle, the front barrel, the front injection material pipe and the rear injection material pipe are all provided with heating rings.

[0010] As a preferred solution of the present invention, the nozzle end is provided with a nozzle top sleeve assembly for adjusting the axial distance between the nozzle and the mold. The nozzle top sleeve assembly includes an inner sleeve, an outer sleeve and a locking sleeve. The inner sleeve is sleeved on the nozzle, and the outer sleeve and the locking sleeve are both threadedly connected to the inner sleeve. The outer sleeve is arranged close to the mold, and the locking sleeve is arranged close to the front barrel.

[0011] As a preferred solution of the present invention, the screw assembly includes an injection screw and a screw head arranged at the end of the injection screw. The tail end of the screw head is provided with a fixing ring for fixed connection with the injection screw. A check ring is provided on the screw head, and the check ring is provided with a piston ring that abuts against the inner wall of the material tube assembly.

[0012] As a preferred solution of the present invention, the injection cylinder assembly includes an injection cylinder and a cylinder front cover and a cylinder rear cover arranged at both ends of the injection cylinder. The injection cylinder is provided with a piston rod passing through the cylinder front cover and is used to drive the screw assembly to move axially. The piston rod is provided with an injection piston that abuts against the inner wall of the injection cylinder.

[0013] As a preferred solution of the present invention, the material storage assembly includes a material storage drive mechanism, a transmission transition mechanism and a material storage seat. The transmission transition mechanism is arranged on the material storage seat, and the output end of the material storage drive mechanism is connected to the transmission transition mechanism. The material storage seat is provided with a transmission shaft connected to the transmission transition mechanism to drive the screw assembly to rotate, and the material storage seat is fixedly connected to the injection cylinder assembly.

[0014] As a preferred solution of the present invention, the mounting assembly includes a barrel fixing bracket and a barrel supporting bracket for fixing the first injection mechanism and the second injection mechanism, the barrel fixing bracket is arranged in the middle of the material pipe assembly for fixing the material pipe assembly, the barrel supporting bracket is arranged at the tail of the material pipe assembly for supporting the material pipe assembly, a first pull rod for connecting the barrel fixing bracket and the barrel supporting bracket is provided between the barrel fixing bracket and the barrel supporting bracket, and a second pull rod for connecting the barrel supporting bracket and the injection cylinder assembly is provided between the barrel supporting bracket and the injection cylinder assembly.

[0015] As a preferred solution of the present invention, a base is also provided on the fuselage, and the injection mechanism and the mounting assembly are both slidably connected to the base. A workstation lifting mechanism for lifting the base is provided on the fuselage, and the workstation lifting mechanism includes a lifting cylinder, which is fixedly arranged on the fuselage, and the output shaft of the lifting cylinder is connected to the base, and a number of raising blocks are provided between the base and the fuselage.

[0016] As a preferred solution of the present invention, the mounting assembly is provided with a full-shift adjustment cylinder assembly for moving the injection mechanism, the full-shift adjustment cylinder assembly includes a full-shift cylinder barrel and a full-shift cylinder piston rod slidably connected to the full-shift cylinder barrel, the full-shift cylinder barrel is hinged to the mounting assembly, the end of the full-shift cylinder piston rod is provided with a transition plate fixedly connected to the fixed plate, the transition plate is provided with a plurality of mounting holes arranged along its height direction, and the mounting hole is fixedly connected to a hinged seat hinged to the full-shift cylinder piston rod.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up the first and second injection mechanisms with the same structure and arranged in parallel to inject into the mold simultaneously, the injection efficiency is improved and the molding weight can be doubled. In addition, by arranging the first and second injection mechanisms on the mounting assembly, the main supporting and load-bearing components of the two injection mechanisms are the same part, thereby reducing the center distance between the two injection mechanisms and further reducing the distance between the two inlet gates on the mold. This makes it suitable for the injection molding of products of different sizes and shapes, and can mold products that cannot be molded by current single-screw machines. 2. Furthermore, a nozzle top sleeve assembly is provided at the end of the nozzle. By rotating the outer sleeve, the axial relative position between the outer sleeve and the inner sleeve is adjusted so that the two ends of the nozzle top sleeve assembly are respectively close to the mold and the nozzle, and bear and transmit the force required by the injection mechanism, thereby reducing the distance between the nozzle and the mold, reducing the impact of the distance on metal injection, and improving the quality of product injection molding; 3. Furthermore, a station lifting mechanism is set on the base, and the height of the base is adjusted by the station lifting mechanism, thereby adjusting the height of the injection mechanism to meet the injection requirements of products of different sizes and shapes; 4. Furthermore, a full-shift adjustment cylinder assembly is provided on the mounting assembly, and the entire injection mechanism and the mounting assembly are moved by the full-shift adjustment cylinder assembly, thereby removing the injection mechanism from the mold, facilitating the inspection, cleaning and replacement of the injection mechanism and improving the efficiency of equipment maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural diagram of the material barrel assembly and the screw assembly; Figure 4 It is a structural diagram of the heating coil; Figure 5 1. It is a structural diagram of the nozzle top sleeve assembly; Figure 6 It is a structural diagram of the injection cylinder assembly; Figure 7 It is a cross-sectional view of the injection cylinder assembly; Figure 8 It is a structural diagram of the storage component; Figure 9 is a cross-sectional view of the storage assembly; Figure 10 It is a structural diagram of the installation components; Figure 11 It is a structural diagram of the workstation lifting mechanism; Figure 12 This is a structural diagram of the entire shift adjustment cylinder assembly 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 81, 82 Injection piston 4035, material storage assembly 404, material storage drive mechanism 4041, transmission transition mechanism 4042, transmission shaft 4043, material storage seat 4044, nozzle top sleeve assembly 405, inner sleeve 4051, outer sleeve 4052, locking sleeve 4053, installation assembly 5, barrel fixing bracket 501, barrel supporting bracket 502, first pull rod 503, second pull rod 504, base 6, slide rail 601, slider 602, work station lifting mechanism 7, lifting cylinder 701, pad block 702, full-shift adjustment cylinder assembly 8, full-shift cylinder piston rod 801, articulated seat 8011, full-shift cylinder barrel 802, transition plate 803, mounting hole 8031. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] like Figures 1-12 As shown, a double-set injection molding machine includes a body 1 and a fixed plate 2 arranged on the body 1, a mold 3 is arranged on the fixed plate 2, and an injection mechanism 4 for injecting metal into the mold 3 is provided on the body 1. The injection mechanism 4 is a first injection mechanism 4A and a second injection mechanism 4B with the same structure and arranged in parallel. The discharge ends of the first injection mechanism 4A and the second injection mechanism 4B are both connected to the mold 3 through the fixed plate 2; the body 1 is provided with a mounting assembly 5 for simultaneously mounting the first injection mechanism 4A and the second injection mechanism 4B.

[0021] Furthermore, the fixed plate 2 is arranged on one end of the fuselage 1, the mold 3 is connected to one side of the fixed plate 2, the injection mechanism 4 is located on the other side of the fixed plate 2, and the injection mechanism 4 is arranged along the length direction of the fuselage 1, and the injection mechanism 4 is a double injection system, that is, the injection mechanism 4 is divided into a first injection mechanism 4A and a second injection mechanism 4B, the first injection mechanism 4A and the second injection mechanism 4B are symmetrically arranged with respect to the center line of the fixed plate 2, and the first injection mechanism 4A and the second injection mechanism 4B have the same structure, that is, the configuration of the first injection mechanism 4A and the second injection mechanism 4B are the same, and the first injection mechanism 4A and the second injection mechanism 4B are arranged by The mounting assembly 5 is fixed thereto, and the mold is injected simultaneously by configuring the first injection mechanism 4A and the second injection mechanism 4B that are identically and symmetrically arranged, thereby improving the injection efficiency and doubling the molding weight. In addition, by arranging both the first injection mechanism 4A and the second injection mechanism 4B on the mounting assembly 5, the main supporting and force-bearing components of the two injection mechanisms are the same part, thereby reducing the center distance between the two injection mechanisms and further reducing the distance between the two inlet gates on the mold. This is suitable for the molding injection of products of different sizes and shapes, and can mold products that cannot be molded by current single-screw machines.

[0022] The injection mechanism 4 includes a material pipe assembly 401 and a screw assembly 402 arranged in the material pipe assembly 401. One end of the screw assembly 402 is connected to an injection cylinder assembly 403 that drives the screw assembly 402 to move axially and a storage assembly 404 that drives the screw assembly 402 to rotate. Furthermore, the tail end of the screw assembly 402 is connected to the injection cylinder assembly 403, and the other end of the injection cylinder assembly 403 is connected to the storage assembly 404. The injection cylinder assembly 403 drives the screw assembly 402 to move along the axial direction of the material pipe assembly 401 in the material pipe assembly 401, and the storage assembly 404 drives the screw assembly 402 to rotate while moving axially through the injection cylinder assembly 403 for conveying magnesium material, and the rotation of the screw assembly 402 driven by the storage assembly 404 does not affect the axial movement of the screw assembly 402 driven by the injection cylinder assembly 403, thereby realizing the conveying of magnesium material and injecting the magnesium material into the mold 3 at the same time.

[0023] The material pipe assembly 401 includes a nozzle 4011, a front barrel 4012, a front injection material pipe 4013 and a rear injection material pipe 4014 connected in sequence, the screw assembly 402 is arranged in the front injection material pipe 4013 and the rear injection material pipe 4014, a material barrel fixing plate 4015 is provided between the front injection material pipe 4013 and the rear injection material pipe 4014, and a heat insulation plate 4016 is provided on the material barrel fixing plate 4015. The front material pipe 4013 and the injection rear material pipe 4014 are both sleeved with a heating ring 4017. Furthermore, the nozzle 4011, the front barrel 4012, the injection front material pipe 4013 and the injection rear material pipe 4014 are coaxially arranged. A through hole 201 is provided on the fixed plate 2. The nozzle 4011 passes through the through hole 201 and is connected to the mold 3. Then, the magnesium material is injected into the mold 3 from the nozzle 4011. In addition, the injection rear material pipe 4014 is sleeved with a barrel fixing plate 4 015, the barrel fixing plate 4015 is set at the connection between the pre-injection material pipe 4013 and the post-injection material pipe 4014, the material pipe assembly 401 is connected and fixed to the mounting assembly 5 through the barrel fixing plate 4015, and a heat insulation plate 4016 is set on the side of the barrel fixing plate 4015 for heat insulation. The screw assembly 402 enters the pre-injection material pipe 4013 and the post-injection material pipe 4014 from the tail end of the post-injection material pipe 4014, and is fixed at the tail end of the post-injection material pipe 4014. A feed port 4018 is also provided, through which magnesium material is added to the post-injection material pipe 4014, and the magnesium material is transported to the nozzle 4011 by the rotation of the screw assembly 402, and the magnesium material is injected into the mold 3 by the axial movement of the screw assembly 402. The heating ring 4017 on the nozzle 4011, the front barrel 4012, the pre-injection material pipe 4013 and the post-injection material pipe 4014 continuously heats the magnesium material to ensure that the magnesium material is in a molten state.

[0024] The end of the nozzle 4011 is provided with a nozzle top sleeve assembly 405 for adjusting the axial distance between the nozzle 4011 and the mold 3. The nozzle top sleeve assembly 405 includes an inner sleeve 4051, an outer sleeve 4052 and a locking sleeve 4053. The inner sleeve 4051 is sleeved on the nozzle 4011, and the outer sleeve 4052 and the locking sleeve 4053 are both threadedly connected to the inner sleeve 4051, and the outer sleeve 4052 is arranged in the direction close to the mold 3, and the locking sleeve 4053 is arranged in the direction close to the front barrel 4012. Further, the nozzle top sleeve assembly 405 is sleeved on the nozzle 4011. Specifically, the inner sleeve 4051 is sleeved on the end of the nozzle 4011, the outer sleeve 4052 and the locking sleeve 4053 are both sleeved on the inner sleeve 4051, and an external thread is provided on the outer wall of the inner sleeve 4051. The outer sleeve 4052 and The inner wall of the locking sleeve 4053 is provided with an internal thread, and the outer sleeve 4052 and the locking sleeve 4053 are both threadedly connected to the inner sleeve 4051. The axial relative position between the outer sleeve 4052 and the inner sleeve 4051 can be changed by rotating the outer sleeve 4052, and the inner sleeve 4051 and the outer sleeve 4052 can be locked by rotating the locking sleeve 4053. After locking, the inner sleeve 4051 and the outer sleeve 4052 can no longer move relative to each other; by adjusting the axial relative position between the outer sleeve 4052 and the inner sleeve 4051, the two ends of the nozzle top sleeve assembly 405 are respectively close to the mold 3 and the nozzle 4011, and bear and transmit the force required by the injection mechanism 4, thereby reducing the distance between the nozzle 4011 and the mold 3, reducing the influence of the distance on metal injection, and improving the quality of product injection molding.

[0025] The screw assembly 402 includes an injection screw 4021 and a screw head 4022 arranged at the end of the injection screw 4021. The tail end of the screw head 4022 is provided with a fixing ring 4023 for fixedly connected to the injection screw 4021. A check ring 4024 is sleeved on the screw head 4022. The check ring 4024 is provided with a piston ring 4025 that abuts the inner wall of the material tube assembly 401. Furthermore, the screw head 4022 is fixedly connected to the end of the injection screw 4021 and is fixed to the injection screw 4021 through the fixing ring 4023. The check ring 4024 and the piston ring 4025 play a role in preventing backflow. The magnesium material can flow from the right to the left, but cannot flow from the left to the right.

[0026] The injection cylinder assembly 403 includes an injection cylinder 4031 and a cylinder front cover 4033 and a cylinder rear cover 4034 provided at both ends of the injection cylinder 4031. The injection cylinder 4031 is provided with a piston rod 4032 which passes through the cylinder front cover 4033 and is used to drive the screw assembly 402 to move axially. The piston rod 4032 is provided with an injection piston 4035 which abuts against the inner wall of the injection cylinder 4031. Furthermore, an oil inlet and an oil outlet are provided on the injection cylinder 4031, and the oil inlet and the oil outlet are respectively located on opposite sides of the injection piston 4035. The liquid enters the injection cylinder through the oil inlet and is discharged through the oil outlet. The piston rod 4032 and the injection piston 4035 move in the injection cylinder 4031. The end of the piston rod 4032 is fixedly connected to the injection screw 4021. The axial forward and backward movement of the injection piston 4035 and the piston rod 4032 can drive the injection screw 4021 to move axially forward and backward. The cylinder front cover 4033 and the cylinder rear cover 4034 are set at both ends of the injection cylinder 4031, and the injection cylinder 4031 is sealed by the cylinder front cover 4033 and the cylinder rear cover 4034.

[0027] The storage assembly 404 includes a storage drive mechanism 4041, a transmission transition mechanism 4042 and a storage seat 4044. The transmission transition mechanism 4042 is arranged on the storage seat 4044, and the output end of the storage drive mechanism 4041 is connected to the transmission transition mechanism 4042. The storage seat 4044 is provided with a transmission shaft 4043 connected to the transmission transition mechanism 4042 to drive the screw assembly 402 to rotate. The storage seat 4044 is fixedly connected to the injection cylinder assembly 403. Further, the storage drive mechanism 4041 can adopt a servo motor or a hydraulic motor, and the transmission transition mechanism 4042 can adopt a A pulley plus synchronous belt structure can also be used as a gear box structure. The material storage drive mechanism 4041 drives the transmission shaft 4043 to rotate through the transmission transition mechanism 4042. The transmission shaft 4043 is connected to the piston rod 4032 of the injection cylinder assembly 403. A spline connection or a flat key connection is adopted between the transmission shaft 4043 and the piston rod 4032. In this way, the transmission shaft 4043 can drive the injection screw 4021 to rotate through the piston rod 4032; at the same time, the forward and backward movement of the piston rod 4032 will not affect the rotation of the transmission shaft 4043, thereby realizing the axial movement and rotation of the injection screw 4021.

[0028] The mounting assembly 5 includes a barrel fixing bracket 501 and a barrel supporting bracket 502 for fixing the first injection mechanism 4A and the second injection mechanism 4B. The barrel fixing bracket 501 is arranged in the middle of the material pipe assembly 401 for fixing the material pipe assembly 401. The barrel supporting bracket 502 is arranged at the tail of the material pipe assembly 401 for supporting the material pipe assembly 401. A first pull rod 503 for connecting the barrel fixing bracket 501 and the barrel supporting bracket 502 is provided between the barrel fixing bracket 501 and the barrel supporting bracket 502. A second pull rod 504 for connecting the barrel supporting bracket 502 and the injection cylinder assembly 403 is provided between the barrel supporting bracket 502 and the injection cylinder assembly 403. Furthermore, after injection, the material pipe 4014 is fixed to the barrel fixing bracket 501 through the barrel fixing plate 4015 , and the tail end of the post-injection material pipe 4014 is set on the barrel support bracket 502. In addition, the middle parts of the post-injection material pipes 4014 of the first injection mechanism 4A and the second injection mechanism 4B are fixed on the same barrel fixed bracket 501, and the tail ends of the post-injection material pipes 4014 of the first injection mechanism 4A and the second injection mechanism 4B are fixed on the same barrel support bracket 502, and then the first injection mechanism 4A and the second injection mechanism 4B are fixedly supported by a barrel fixed bracket 501 and a barrel support bracket 502, thereby reducing the distance between the first injection mechanism 4A and the second injection mechanism 4B, thereby reducing the distance between the two inlet gates on the mold 3, which is suitable for molding injection of products of different sizes and shapes, and can mold products that cannot be molded by current single-screw machines.

[0029] In addition, the barrel fixing bracket 501, the barrel supporting bracket 502 and the injection cylinder assembly 403 are connected and fixed by the first pull rod 503 and the second pull rod 504, and the storage assembly 404 is connected to the injection cylinder assembly 403, so that the barrel fixing bracket 501, the barrel supporting bracket 502, the injection cylinder assembly 403 and the storage assembly 404 are connected into an integral structure, thereby facilitating the overall movement of the injection mechanism 4.

[0030] The fuselage 1 is also provided with a base 6, the injection mechanism 4 and the mounting assembly 5 are both slidably connected to the base 6, the fuselage 1 is provided with a station lifting mechanism 7 for lifting the base 6, the station lifting mechanism 7 includes a lifting cylinder 701, the lifting cylinder 701 is fixedly provided on the fuselage 1, and the output shaft of the lifting cylinder 701 is connected to the base 6, and a number of pad blocks 702 are provided between the base 6 and the fuselage 1. Further, the base 6 is provided along the length direction of the fuselage 1, and a number of lifting cylinders 701 are provided on the fuselage 1, and the several lifting cylinders 701 are evenly distributed on the bottom At the bottom of the seat 6, the output shaft of the lifting cylinder 701 is connected to the lower surface of the base 6. The base 6 is lifted and lowered by the lifting cylinder 701, and then the various components on the base 6 are lifted and lowered, so that the material tube assembly 401 is lifted and lowered to the required work station; at the same time, a number of pad blocks 702 are also provided on the fuselage 1. The pad blocks 702 are evenly distributed, and the pad blocks 702 are padded between the base 6 and the fuselage 1. Different heights of work stations use pad blocks 702 of different heights. The support of the base 6 is achieved by the pad blocks 702, thereby reducing the pressure of the work station lifting mechanism 7.

[0031] The mounting assembly 5 is provided with a full-shift adjustment cylinder assembly 8 for moving the injection mechanism 4. The full-shift adjustment cylinder assembly 8 includes a full-shift cylinder barrel 802 and a full-shift cylinder piston rod 801 slidably connected to the full-shift cylinder barrel 802. The full-shift cylinder barrel 802 is hinged to the mounting assembly 5. The end of the full-shift cylinder piston rod 801 is provided with a transition plate 803 fixedly connected to the fixed plate 2. The transition plate 803 is provided with a plurality of mounting holes 8031 ​​arranged along its height direction. The mounting hole 8031 ​​is fixedly connected with a hinge seat 8011 hinged to the full-shift cylinder piston rod 801. Furthermore, a slide rail 601 arranged along its length direction is provided on the base 6. Slide blocks 602 slidably connected to the slide rail 601 are provided at the bottom of the barrel fixing bracket 501, the barrel supporting bracket 502 and the injection cylinder assembly 403. The full-shift adjustment cylinder assembly 8 is arranged on opposite sides of the injection mechanism 4, and the full-shift adjustment cylinder assembly 8 is arranged along the length direction of the base 6. The end of the barrel 802 is hingedly set on the barrel support bracket 502, and a transition plate 803 is installed on the fixed plate 2. A plurality of mounting holes 8031 ​​are provided on the transition plate 803. The hinge seat 8011 is installed in the mounting hole 8031 ​​by bolts. The end of the whole-shift cylinder piston rod 801 is hinged to the hinge seat 8011. The whole-shift cylinder barrel 802 drives the barrel support bracket 502 to move, and then drives other components to move on the base 6. The entire injection mechanism 4 and the mounting assembly 5 are moved by the whole-shift adjustment cylinder assembly 8, so that the injection mechanism 4 is removed from the mold 3, which facilitates the inspection, cleaning and replacement of the injection mechanism 4 and improves the efficiency of equipment maintenance. In addition, the positions of several mounting holes 8031 ​​are suitable for workstations of different heights, that is, when the base 6 is adjusted according to the height of the workstation, each workstation has a mounting hole 8031 ​​of the same height, so that at each workstation, the transition plate 803 and the whole-shift cylinder piston rod 801 can be fixed.

[0032] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be embodied in the widest possible manner consistent with the principles and novel features disclosed herein.

[0033] Although this article uses more reference numerals in the figures: body 1, fixed plate 2, through hole 201, mold 3, injection mechanism 4, first injection mechanism 4A, second injection mechanism 4B, material pipe assembly 401, nozzle 4011, front barrel 4012, front injection material pipe 4013, rear injection material pipe 4014, barrel fixing plate 4015, heat insulation plate 4016, heating ring 4017, feed port 4018, screw assembly 402, injection screw 4021, screw head 4022, fixing ring 4023, check ring 4024, piston ring 4025, injection cylinder assembly 403, injection cylinder 4031, piston rod 4032, cylinder front cover 4033, cylinder rear cover 4034, injection piston 4036, injection piston 4037, injection piston 4038, injection piston 4039, injection piston 4040, injection piston 4041, injection piston 4042, injection piston 4043, injection piston 4044, injection piston 4045, injection piston 4046, injection piston 4047, injection piston 4048, injection piston 4049, injection piston 4050, injection piston 4051, injection piston 4052, injection piston 4053, injection piston 4054, injection piston 4055, injection piston 4056, injection piston 4057, injection piston 4058, injection piston 4059, injection piston 4060, injection piston 4061, injection piston 4062, injection piston 4063, injection piston 4064, injection piston 4065, injection piston 4066, injection piston 4067, injection piston 4068, injection piston 4069, injection piston 4070, injection piston 4071, injection piston 4 035, material storage assembly 404, material storage drive mechanism 4041, transmission transition mechanism 4042, transmission shaft 4043, material storage seat 4044, nozzle top sleeve assembly 405, inner sleeve 4051, outer sleeve 4052, locking sleeve 4053, mounting assembly 5, barrel fixing bracket 501, barrel supporting bracket 502, first pull rod 503, second pull rod 504, base 6, slide rail 601, slide block 602, workstation lifting mechanism 7, lifting cylinder 701, spacer block 702, full-shift adjustment cylinder assembly 8, full-shift cylinder piston rod 801, articulated seat 8011, full-shift cylinder barrel 802, transition plate 803, mounting hole 8031 ​​and other terms, but the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A double-set injection molding machine, comprising a machine body (1) and a fixed plate (2) arranged on the machine body (1), a mold (3) being arranged on the fixed plate (2), and an injection mechanism (4) for performing metal injection on the mold (3) being arranged on the machine body (1), characterized in that: The injection mechanism (4) comprises a first injection mechanism (4A) and a second injection mechanism (4B) having the same structure and arranged in parallel, wherein the discharge ends of the first injection mechanism (4A) and the second injection mechanism (4B) are both connected to the mold (3) through the fixed plate (2); and a mounting assembly (5) for simultaneously mounting the first injection mechanism (4A) and the second injection mechanism (4B) is provided on the machine body (1).

2. The double-set injection molding machine according to claim 1, characterized in that: The injection mechanism (4) comprises a material tube assembly (401) and a screw assembly (402) arranged in the material tube assembly (401); one end of the screw assembly (402) is connected to an injection cylinder assembly (403) for driving the screw assembly (402) to move axially and a material storage assembly (404) for driving the screw assembly (402) to rotate.

3. The double-set injection molding machine according to claim 2, characterized in that: The material pipe assembly (401) includes a nozzle (4011), a front barrel (4012), a front injection material pipe (4013) and a rear injection material pipe (4014) which are connected in sequence. The screw assembly (402) is arranged in the front injection material pipe (4013) and the rear injection material pipe (4014). A material barrel fixing plate (4015) is provided between the front injection material pipe (4013) and the rear injection material pipe (4014). A heat insulation plate (4016) is provided on the material barrel fixing plate (4015). In addition, a heating ring (4017) is provided on each of the nozzle (4011), the front barrel (4012), the front injection material pipe (4013) and the rear injection material pipe (4014).

4. The double-set injection molding machine according to claim 3, characterized in that: The nozzle (4011) end is provided with a nozzle top sleeve assembly (405) for adjusting the axial distance between the nozzle (4011) and the mold (3). The nozzle top sleeve assembly (405) comprises an inner sleeve (4051), an outer sleeve (4052) and a locking sleeve (4053). The inner sleeve (4051) is sleeved on the nozzle (4011). The outer sleeve (4052) and the locking sleeve (4053) are both threadedly connected to the inner sleeve (4051). The outer sleeve (4052) is arranged in a direction close to the mold (3), and the locking sleeve (4053) is arranged in a direction close to the front barrel (4012).

5. The double-set integrated injection molding machine according to claim 2, characterized in that: The screw assembly (402) includes an injection screw (4021) and a screw head (4022) arranged at the end of the injection screw (4021). The tail end of the screw head (4022) is provided with a fixing ring (4023) for fixedly connecting with the injection screw (4021). The screw head (4022) is sleeved with a check ring (4024). The check ring (4024) is provided with a piston ring (4025) that abuts against the inner wall of the material pipe assembly (401).

6. The double-set injection molding machine according to claim 2, characterized in that: The injection cylinder assembly (403) comprises an injection cylinder (4031) and a cylinder front cover (4033) and a cylinder rear cover (4034) arranged at both ends of the injection cylinder (4031). The injection cylinder (4031) is provided with a piston rod (4032) passing through the cylinder front cover (4033) and configured to drive the screw assembly (402) to move axially. The piston rod (4032) is provided with an injection piston (4035) abutting against the inner wall of the injection cylinder (4031).

7. The double-set integrated injection molding machine according to claim 2, characterized in that: The material storage assembly (404) comprises a material storage drive mechanism (4041), a transmission transition mechanism (4042) and a material storage seat (4044); the transmission transition mechanism (4042) is arranged on the material storage seat (4044), and the output end of the material storage drive mechanism (4041) is connected to the transmission transition mechanism (4042); a transmission shaft (4043) connected to the transmission transition mechanism (4042) for driving the screw assembly (402) to rotate is provided in the material storage seat (4044); and the material storage seat (4044) is fixedly connected to the injection cylinder assembly (403).

8. The double-set integrated injection molding machine according to claim 2, characterized in that: The mounting assembly (5) comprises a barrel fixing bracket (501) and a barrel supporting bracket (502) for fixing the first injection mechanism (4A) and the second injection mechanism (4B); the barrel fixing bracket (501) is arranged at the middle of the barrel assembly (401) for fixing the barrel assembly (401); the barrel supporting bracket (502) is arranged at the rear of the barrel assembly (401) for supporting the barrel assembly (401); a first pull rod (503) for connecting the barrel fixing bracket (501) and the barrel supporting bracket (502) is provided between the barrel fixing bracket (501) and the barrel supporting bracket (502); and a second pull rod (504) for connecting the barrel supporting bracket (502) and the injection cylinder assembly (403) is provided between the barrel supporting bracket (502) and the injection cylinder assembly (403).

9. The double-set integrated injection molding machine according to claim 1, characterized in that: The machine body (1) is further provided with a base (6), the injection mechanism (4) and the mounting assembly (5) are both slidably connected to the base (6), the machine body (1) is provided with a station lifting mechanism (7) for lifting the base (6), the station lifting mechanism (7) includes a lifting cylinder (701), the lifting cylinder (701) is fixedly arranged on the machine body (1), and the output shaft of the lifting cylinder (701) is connected to the base (6), and a plurality of pad blocks (702) are provided between the base (6) and the machine body (1).

10. The double-set injection molding machine according to claim 1, characterized in that: The mounting assembly (5) is provided with a full-shift adjustment oil cylinder assembly (8) for moving the injection mechanism (4). The full-shift adjustment oil cylinder assembly (8) comprises a full-shift oil cylinder barrel (802) and a full-shift oil cylinder piston rod (801) slidably connected to the full-shift oil cylinder barrel (802). The full-shift oil cylinder barrel (802) is hinged to the mounting assembly (5). The end of the full-shift oil cylinder piston rod (801) is provided with a transition plate (803) fixedly connected to the fixed plate (2). The transition plate (803) is provided with a plurality of mounting holes (8031) arranged along its height direction. The mounting holes (8031) are fixedly connected to a hinge seat (8011) hinged to the full-shift oil cylinder piston rod (801).

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