A lampshade injection molding machine

Abstract

The present invention discloses a lamp shade injection molding machine, which includes: a workbench; an injection molding die base disposed on the workbench, the injection molding die base is provided with a first cavity and an output channel, and the output channel is used for outputting a plastic body in a molten state; a molding die base disposed on the workbench, the molding die base is provided with a second cavity; a transfer die base rotatably disposed on the workbench, the transfer die base is located between the injection molding die base and the molding die base, both sides of the transfer die base are provided with die cores and air blowing channels, the air blowing channels are used for outputting high-temperature gas, and the transfer die base can rotate relative to the workbench to a first position or a second position. The lamp shade injection molding machine with the above structure can reduce the time for embryo transfer and the steps of assembly and disassembly, thereby improving the production efficiency of the lamp shade.

Description

Technical Field

[0001] The present invention relates to the technical field of lampshade processing, and in particular to an injection molding machine for lampshades. Background Art

[0002] At present, the forming process of the existing spherical lampshades includes two steps: injection molding and blow molding. Specifically, a blank of the product is first produced by an injection molding machine, and then the blank is placed on a blow molding machine for blow molding. By adopting this injection molding method, the transfer time of the blank is relatively long, and the blank needs to be assembled and disassembled, resulting in low production efficiency. Moreover, the formed lampshade is embedded in the cavity of the blow molding machine, and the unloading is also difficult. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides an injection molding machine for lampshades, which can reduce the transfer time of the blank and the assembly and disassembly steps, thereby improving the production efficiency of the lampshades.

[0004] An injection molding machine for lampshades according to an embodiment of the present invention includes: a workbench; an injection mold base provided on the workbench, the injection mold base being provided with a first cavity and an output channel for outputting a plastic body in a molten state; a forming mold base provided on the workbench, the forming mold base being provided with a second cavity; a transfer mold base rotatably provided on the workbench, the transfer mold base being located between the injection mold base and the forming mold base, both sides of the transfer mold base being provided with mold cores and air blowing channels for outputting high-temperature gas, and the transfer mold base being capable of rotating relative to the workbench to a first position or a second position; wherein, when the mold core is in the first position, the transfer mold base can move relative to the injection mold base to close the mold, the mold core and the first cavity cooperate to form an injection molding cavity, the output channel can transport the plastic body into the injection molding cavity and enable the plastic body to wrap around the outer periphery of the mold core to form a blank, and when the mold core rotates to switch to the second position, the transfer mold base can move relative to the forming mold base to close the mold, the mold core having the blank and the second cavity cooperate to form a blow molding cavity, and the air blowing channel communicates with the blow molding cavity and transports gas into the blow molding cavity.

[0005] The lampshade injection molding machine according to the embodiment of the present invention has at least the following beneficial effects: during the lampshade molding process, the mold core on either side is first in the first position, the injection mold base and the transfer mold base move to close the mold, and the output channel injects the plastic into the injection cavity, so that the plastic forms an embryo on the mold core, and then the transfer mold base rotates, so that the mold core with the embryo is switched to the second position, the molding mold base and the transfer mold base move to close the mold, and the blowing channel outputs high-temperature gas to the blow molding cavity, so that the embryo on the mold core swells to fit the inner wall of the second cavity to form the desired product, thereby reducing the embryo transfer time and assembly and disassembly steps, and improving production efficiency. It can be understood that when the mold core on one side of the transfer mold base is performing injection molding with the injection mold base, the mold core on the other side of the transfer mold base can be blow molded with the molding mold base at the same time, further improving production efficiency.

[0006] In some embodiments of the present invention, a plurality of mold cores are provided, and the plurality of mold cores are distributed in multiple rows and columns on the transfer mold base. An annular groove is provided on the surface of the transfer mold base corresponding to each of the mold cores. The annular grooves are circumferentially arranged around the bottom of the mold core. The annular grooves are connected to the blowing channel. The transfer mold base is provided with a guide channel, and the guide channel is connected between two of the annular grooves. When the transfer mold base is spliced ​​to the injection mold base, the output channel is connected to the guide channel.

[0007] In some embodiments of the present invention, the transfer mold base includes a main body, a mounting seat and a molding body, the molding body includes a mounting column and a hemispherical portion connected to one end of the mounting column, an air receiving channel connected to the annular groove is opened inside the mounting column, the mounting seat is detachably connected to the main body, when the mounting column is installed on the mounting seat, the air receiving channel is connected to the blowing channel, and the hemispherical portion protrudes from the outer surface of the mounting seat to form the mold core.

[0008] In some embodiments of the present invention, the mounting seat includes a boss portion, the annular groove surrounds the outer circumference of the boss portion, a planar portion is formed at the connection between the mounting column and the hemispherical portion, and a gap space is provided between the planar portion and the end surface of the boss portion, and the gap space allows high-temperature gas to flow from the gas receiving channel into the annular groove.

[0009] In some embodiments of the present invention, the mounting seat is provided with a plurality of notches spaced apart along the circumference of the annular groove, and the notches are extended along a side away from the mold core.

[0010] In some embodiments of the present invention, the workbench is provided with a linear guide, a first movable frame and a first linear mechanism, the extension direction of the linear guide is toward the injection mold base, the first movable frame is slidably provided on the linear guide, the transfer mold base is rotatably provided on the first movable frame, and the first linear mechanism is connected to the first movable frame to drive the transfer mold base to move closer to or away from the injection mold base.

[0011] In some embodiments of the present invention, the first moving frame is provided with a rotation driving mechanism, and the rotation driving mechanism includes a first gear, a second gear and a driving motor, the output end of the driving motor is connected to the first gear, the second gear is fixedly connected to the transfer mold base, and the first gear and the second gear are meshed for transmission.

[0012] In some embodiments of the present invention, the workbench is also provided with a second movable frame and a second linear mechanism, the forming mold base is arranged on the second movable frame, the second movable frame is slidably arranged on the linear guide rail, and the second linear mechanism is connected to the second movable frame to drive the forming mold base to move closer to or away from the transferring mold base.

[0013] In some embodiments of the present invention, the molding mold base includes two half molds that can move relative to each other to form the second cavity, one of the half molds is fixed to the second movable frame, and the other half mold is connected to a third linear mechanism that drives it to reciprocate.

[0014] In some embodiments of the present invention, the transfer mold base is provided with a guide column, and the guide column is extended along a length direction parallel to the linear guide rail, and the injection mold base and the molding mold base are both provided with a slot that can be plugged into and cooperate with the guide column.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a lampshade injection molding machine of the present invention;

[0018] Figure 2 for Figure 1 A structural schematic diagram of another perspective of the embodiment;

[0019] Figure 3 for Figure 1 A schematic diagram of the structure of an embodiment with some parts removed;

[0020] Figure 4 is Figure 3 Schematic diagram of the installation of the transfer die holder and the injection mold base in

[0021] Figure 5 is Figure 4 Schematic diagram of the structure of the transfer die holder in

[0022] Figure 6 is Figure 5 Partial enlarged view at position A in

[0023] Figure 7 is Figure 5 Internal sectional view of

[0024] Figure 8 is Figure 7 Partial enlarged view at position B in

[0025] Figure 9 is Figure 3 Schematic diagram of the structure of the forming die holder in

[0026] In the figure: workbench 100, linear guide 110, first moving frame 120, second gear 121, drive motor 122, first linear mechanism 130, second moving frame 140, second linear mechanism 150, third linear mechanism 160, injection mold base 200, first cavity 210, forming die holder 300, half mold 310, second cavity 320, transfer die holder 400, main body 401, mounting seat 402, boss part 4021, notch part 4022, mounting post 403, air connection channel 404, mold core 410, air blowing channel 420, annular groove 430, diversion channel 440, guide post 450, injection mechanism 500. Specific embodiments

[0027] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0028] In the description of the present invention, it should be understood that with regard to the orientation description, for example, terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0029] In the description of the present invention, "several" means one or more, "multiple" means more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] See Figures 1 to 5 , a lamp shade injection molding machine, comprising: a workbench 100; an injection mold base 200 provided on the workbench 100, the injection mold base 200 being provided with a first cavity 210 and an output channel for outputting a plastic body in a molten state; a forming mold base 300 provided on the workbench 100, the forming mold base 300 being provided with a second cavity 320; a transfer mold base 400 rotatably provided on the workbench 100, the transfer mold base 400 being located between the injection mold base 200 and the forming mold base 300, both sides of the transfer mold base 400 being provided with mold cores 410 and air blowing channels 420 for outputting high-temperature gas, and the transfer mold base 400 being capable of rotating relative to the workbench 100 to a first position or a second position; wherein, when the mold core 410 is in the first position, the transfer mold base 400 can move relative to the injection mold base 200 to close the mold, the mold core 410 cooperates with the first cavity 210 to form an injection molding cavity, the output channel can convey the plastic body into the injection molding cavity and enable the plastic body to wrap around the outer periphery of the mold core 410 to form an embryo, and when the mold core 410 rotates to switch to the second position, the transfer mold base 400 can move relative to the forming mold base 300 to close the mold, the mold core 410 with the embryo cooperates with the second cavity 320 to form a blow molding cavity, and the air blowing channel 420 communicates with the blow molding cavity and conveys gas into the blow molding cavity.

[0032] For the lamp shade injection molding machine with the above structure, during the lamp shade forming process, the mold core 410 on either side is first in the first position. The injection mold base 200 and the transfer mold base 400 move to close the mold, and the output channel injects the plastic body into the injection cavity, so that the plastic body forms a blank on the mold core 410. Subsequently, the transfer mold base 400 rotates, causing the mold core 410 with the blank to switch to the second position. The forming mold base 300 and the transfer mold base 400 move to close the mold, and the air blowing channel 420 outputs high-temperature gas to the blow molding cavity, causing the blank on the mold core 410 to bulge and adhere to the inner wall of the second concave cavity to form the required product, thereby reducing the time for blank transfer and the steps of reloading, and improving the production efficiency. It can be understood that when the mold core 410 on one side of the transfer mold base 400 is performing injection work with the injection mold base 200, the mold core 410 on the other side of the transfer mold base 400 can simultaneously perform blow molding work with the forming mold base 300, further improving the production efficiency.

[0033] See Figures 3 to 8 , in some embodiments of the present invention, there are multiple mold cores 410, and the multiple mold cores 410 are distributed in multiple rows and columns on the transfer mold base 400. The surface of the transfer mold base 400 is provided with an annular groove 430 corresponding to each mold core 410. The annular groove 430 is arranged circumferentially around the bottom of the mold core 410, and the annular groove 430 is connected to the air blowing channel 420. The transfer mold base 400 is provided with a diversion channel 440, and the diversion channel 440 is connected between two annular grooves 430. When the transfer mold base 400 is spliced with the injection mold base 200, the output channel is connected to the diversion channel 440.

[0034] Specifically, when the transfer mold base 400 is spliced with the injection mold base 200, there is a clearance space connected to the annular groove 430 between the outer wall of the mold core 410 and the inner wall of the first concave cavity 210. The clearance space, the annular groove 430, and the diversion channel 440 together form the injection cavity. The output channel is connected to the diversion channel 440, so that the molten injection body flows into the injection cavity, and finally gradually forms a blank wrapped around the outer periphery of the mold core 410 from the bottom of the mold core 410. It can be understood that when the transfer mold base 400 is spliced with the forming mold base 300, there is also a clearance space connected to the annular groove 430 between the outer wall of the mold core 410 and the inner wall of the second concave cavity 320. The blank on the mold core 410 is located in this clearance space, and the air blowing channel 420 outputs high-temperature gas to blow and form the blank on the inner wall of the second concave cavity 320. Among them, the setting of the diversion channel 440 can not only guide the flow of the plastic body, but also form a connecting strip between two blown products, so that people can subsequently take out the products by operating the connecting strip. It can be understood that an injection mechanism 500 is provided on one side of the injection mold base 200, and the injection mechanism 500 is used to convey the molten plastic body to the output channel.

[0035] SeeFigures 5 to 8 In some embodiments of the present invention, the transfer mold base 400 includes a main body 401, a mounting base 402 and a molded body, the molded body includes a mounting column 403 and a hemispherical portion connected to one end of the mounting column 403, the mounting column 403 is provided with an air receiving channel 404 connected to the annular groove 430, the mounting base 402 is detachably connected to the main body 401, when the mounting column 403 is mounted on the mounting base 402, the air receiving channel 404 is connected to the blowing channel 420, and the hemispherical portion protrudes from the outer surface of the mounting base 402 to form a mold core 410. Specifically, the transfer mold base 400 is built with a heating module, the blowing channel 420 is connected to an external air supply device, the air flow is heated by the heating module and passes through the blowing channel 420, the air receiving channel 404 and the annular groove 430 in sequence, thereby forming a high-temperature air flow that can inflate the embryo. Among them, the mounting base 402 is connected to the main body 401 by a bolt assembly, which is convenient for people to disassemble and replace the mounting base 402 later.

[0036] See also Figures 5 to 8 In some embodiments of the present invention, the mounting seat 402 includes a boss portion 4021, an annular groove 430 surrounds the outer periphery of the boss portion 4021, a planar portion is formed at the connection between the mounting column 403 and the hemispherical portion, and a gap space is provided between the planar portion and the end surface of the boss portion 4021, and the gap space allows high-temperature gas to flow from the gas receiving channel 404 into the annular groove 430.

[0037] Specifically, the gap space is in the shape of a ring around the bottom of the hemispherical part, so that the high-temperature airflow flows out along the circumference of the hemispherical part to blow the inner wall of the embryo 360 degrees, thereby evenly blowing the embryo into the second concave cavity 320, improving the blow molding efficiency, and reducing the phenomenon of uneven thickness of the lampshade after blow molding. Among them, the mounting seat 402 is provided with a threaded hole, and the mounting column 403 is provided with a threaded section that matches the threaded hole, so that the extension distance of the mounting column 403 can be adjusted by changing the number of turns of tightening the mounting column 403, and then the size of the gap space is adjusted to adjust the size of the output airflow.

[0038] See also Figure 6 In some embodiments of the present invention, the mounting seat 402 is provided with a plurality of notches 4022 spaced apart along the circumference of the annular groove 430, and the notches 4022 are extended along a side away from the mold core 410. Specifically, the notches 4022 increase the contact area between the embryo and the mounting seat 402, reduce the loosening of the embryo after injection molding, and thus prevent the embryo from falling off during transportation.

[0039] See also Figures 1 to 4, in some embodiments of the present invention, the workbench 100 is provided with a linear guide rail 110, a first moving frame 120 and a first linear mechanism 130. The extending direction of the linear guide rail 110 faces the injection mold base 200. The first moving frame 120 is slidably arranged on the linear guide rail 110. The transfer mold base 400 is rotatably arranged on the first moving frame 120. The first linear mechanism 130 is connected to the first moving frame 120 to drive the transfer mold base 400 to move closer to or away from the injection mold base 200.

[0040] Specifically, the workbench 100 is provided with a fixed seat. The injection mold base 200 is installed on the fixed seat. The first moving frame 120 is provided with a sliding seat that cooperates with the linear guide rail 110. The first linear mechanism 130 is a cylinder. The telescopic end of the cylinder is connected to the first moving frame 120 to drive the transfer mold base 400 to move closer to or away from the injection mold base 200. It can be understood that four cylinders can be provided. The four cylinders are distributed in a rectangle and are jointly linked to the first moving frame 120, thereby improving the power for driving the first moving frame 120 to move and accelerating the moving efficiency. In some embodiments, in order to further standardize the moving direction of the first moving frame 120 and further improve the smoothness of the movement, the fixed seat is further provided with guide posts, and the first moving frame 120 is provided with through holes that cooperate with the guide posts.

[0041] See Figure 3 and Figure 4 , in some embodiments of the present invention, the first moving frame 120 is provided with a rotation driving mechanism. The rotation driving mechanism includes a first gear, a second gear 121 and a driving motor 122. The output end of the driving motor 122 is connected to the first gear. The second gear 121 is fixedly connected to the transfer mold base 400. The first gear and the second gear 121 are meshed and driven.

[0042] Specifically, the transfer mold base 400 is rotatably connected to the first moving frame 120 through a rotating shaft. The second gear 121 is fixedly installed at the lower end of the rotating shaft. Driven by the driving motor 122, the first gear drives the second gear 121 to rotate, so that the rotating shaft drives the transfer mold base 400 to rotate 180 degrees. Among them, the driving motor 122 is controlled by a servo motor, so as to accurately adjust the rotation angle of the transfer mold base 400 to ensure subsequent mold closing cooperation. In some embodiments, the meshing and driving mode of the first gear and the second gear 121 can also be replaced by the driving mode of the driving wheel and the driven wheel through a belt, which will not be elaborated here.

[0043] See Figures 1 to 4 , in some embodiments of the present invention, the workbench 100 is further provided with a second moving frame 140 and a second linear mechanism 150. The forming mold base 300 is arranged on the second moving frame 140. The second moving frame 140 is slidably arranged on the linear guide rail 110. The second linear mechanism 150 is connected to the second moving frame 140 to drive the forming mold base 300 to move closer to or away from the transfer mold base 400.

[0044] Specifically, the second moving frame 140 is provided with a sliding seat matched with the linear guide rail 110, and the second linear mechanism 150 is a direct pressure oil cylinder, and the output end of the oil cylinder is connected to the second moving frame 140, which is not only conducive to increasing the driving force for driving the forming mold base 300 to move and improving the moving efficiency of the forming mold base 300, but also can ensure the compaction degree of the forming mold base 300 and the transfer mold base 400. Among them, the first moving frame 120 and the second moving frame 140 are both arranged on the same linear guide rail 110, so that the forming mold base 300 and the transfer mold base 400 move along the same straight line, thereby ensuring the subsequent accurate mold closing of the two. In addition, the forming mold base 300 and the transfer mold base 400 are independently driven by different driving mechanisms, so that the two can be started synchronously, thereby reducing the mold closing time and improving production efficiency.

[0045] See also Figures 1 to 4 In some embodiments of the present invention, the molding die base 300 includes two half-molds 310 that can relatively move to close the mold to form a second cavity 320, wherein one of the half-molds 310 is fixedly mounted on the second moving frame 140, and the other half-mold 310 is connected to a third linear mechanism 160 that drives it to reciprocate. Specifically, the third linear mechanism 160 is a cylinder, the telescopic end of the cylinder is connected to one of the half-molds 310, and the other half-mold 310 is fixedly mounted on the second moving frame 140. Driven by the cylinder, the two half-molds 310 are spliced ​​together to form a row of second cavities 320. After the product is blow-molded, driven by the cylinder, the two half-molds 310 move away from each other so that the product quickly leaves the second cavity 320, so that people can quickly take out the product, thereby improving the unloading efficiency of the product.

[0046] See also Figures 1 to 4 In some embodiments of the present invention, the transfer mold base 400 is provided with a guide post 450, which is extended in a length direction parallel to the linear guide rail 110, and the injection mold base 200 and the molding mold base 300 are both provided with a slot that can be plugged with the guide post 450. Specifically, the cooperation between the guide post 450 and the slot is conducive to standardizing the mold closing direction between the transfer mold base 400 and the injection mold base 200 or the molding mold base 300, thereby improving the matching accuracy.

[0047] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lamp shade injection molding machine, characterized in that, it includes: a workbench (100); an injection mold base (200), arranged on the workbench (100), the injection mold base (200) is provided with a first cavity (210) and an output channel, and the output channel is used for outputting a plastic body in a molten state; a forming mold base (300), arranged on the workbench (100), the forming mold base (300) is provided with a second cavity (320); a transfer mold base (400), rotatably arranged on the workbench, the transfer mold base (400) is located between the injection mold base (200) and the forming mold base (300), both sides of the transfer mold base (400) are provided with mold cores (410) and air blowing channels (420), the air blowing channels (420) are used for outputting high-temperature gas, and the transfer mold base (400) can rotate relative to the workbench (100) to a first position or a second position; wherein, when the transfer mold base (400) is in the first position, the transfer mold base (400) can move relative to the injection mold base (200) to close the mold, the mold core (410) cooperates with the first cavity (210) to form an injection molding cavity, and the output channel can convey the plastic body to the injection molding cavity and enable the plastic body to wrap around the outer periphery of the mold core (410) to form a blank; when the transfer mold base (400) rotates to switch to the second position, the transfer mold base (400) can move relative to the forming mold base (300) to close the mold, the mold core (410) with the blank cooperates with the second cavity (320) to form a blow molding cavity, and the air blowing channel (420) communicates with the blow molding cavity and conveys gas to the blow molding cavity; there are multiple mold cores (410), and the multiple mold cores (410) are distributed in multiple rows and columns on the transfer mold base (400). An annular groove (430) is formed on the surface of the transfer mold base (400) corresponding to each mold core (410), the annular groove (430) is arranged circumferentially around the bottom of the mold core (410), the annular groove (430) is communicated with the air blowing channel (420), and the transfer mold base (400) is provided with a diversion channel (440), the diversion channel (440) is communicated between two annular grooves (430). When the transfer mold base (400) is spliced with the injection mold base (200), the output channel is communicated with the diversion channel (440); The transfer mold base (400) comprises a main body (401), a mounting seat (402) and a molded body, wherein the molded body comprises a mounting column (403) and a hemispherical portion connected to one end of the mounting column (403), wherein an air receiving channel (404) communicating with the annular groove (430) is provided inside the mounting column (403), and the mounting seat (402) is detachably connected to the main body (401), and when the mounting column (403) is mounted on the mounting seat (402), the air receiving channel (404) is communicated with the air blowing channel (420), and the hemispherical portion protrudes from the outer surface of the mounting seat (402) to form the mold core (410).

2. A lampshade injection molding machine according to claim 1, Features: The mounting seat (402) includes a boss portion (4021), the annular groove (430) surrounds the outer circumference of the boss portion (4021), a plane portion is formed at the connection between the mounting column (403) and the hemispherical portion, and a gap space is provided between the plane portion and the end surface of the boss portion (4021), and the gap space allows high-temperature gas to flow from the gas receiving channel (404) into the annular groove (430).

3. A lampshade injection molding machine according to claim 2, Features: The mounting seat (402) is provided with a plurality of notch portions (4022) spaced apart along the circumference of the annular groove (430), and the notch portions (4022) are extended along a side away from the mold core (410).

4. A lampshade injection molding machine according to claim 1, Features: The workbench (100) is provided with a linear guide rail (110), a first movable frame (120) and a first linear mechanism (130); the extension direction of the linear guide rail (110) is toward the injection mold base (200); the first movable frame (120) is slidably arranged on the linear guide rail (110); the transfer mold base (400) is rotatably arranged on the first movable frame (120); and the first linear mechanism (130) is connected to the first movable frame (120) to drive the transfer mold base (400) to move closer to or away from the injection mold base (200).

5. A lampshade injection molding machine according to claim 4, Features: The first moving frame (120) is provided with a rotation driving mechanism, the rotation driving mechanism comprising a first gear, a second gear (121) and a driving motor (122), the output end of the driving motor (122) being connected to the first gear, the second gear (121) being fixedly connected to the transfer mold base (400), and the first gear and the second gear (121) being meshed for transmission.

6. A lampshade injection molding machine according to claim 4, Features: The workbench (100) is further provided with a second moving frame (140) and a second linear mechanism (150). The molding die base (300) is arranged on the second moving frame (140). The second moving frame (140) is slidably arranged on the linear guide rail (110). The second linear mechanism (150) is connected to the second moving frame (140) to drive the molding die base (300) to move closer to or away from the transfer die base (400).

7. An injection molding machine for lamp covers according to claim 6, characterized in that: The molding die base (300) includes two half dies (310) that can relatively move to close the mold to form the second cavity (320). One of the half dies (310) is fixedly arranged on the second moving frame (140), and the other half die (310) is connected with a third linear mechanism (160) that drives it to reciprocate.

8. An injection molding machine for lamp covers according to claim 4, characterized in that: The transfer die base (400) is provided with guide posts (450). The guide posts (450) extend along the length direction parallel to the linear guide rail (110). The injection molding die base (200) and the molding die base (300) are both provided with slots that can be inserted and matched with the guide posts (450).

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