An automated injection molding production line

By designing an automated injection molding production line, the problems of low production efficiency and material waste in screwdriver production were solved, achieving efficient automated production and resource recycling, and improving the stability and ease of maintenance of the production line.

CN224374691UActive Publication Date: 2026-06-19ZHEJIANG FEILING TOOLS

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG FEILING TOOLS
Filing Date
2025-06-17
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing screwdriver production lines suffer from low production efficiency and material waste.

Method used

An automated injection molding production line was designed, including a robot arm, an injection molding machine, a cutter bar feeder frame, a sprue cutter frame, and an air-cooled belt conveyor line. The robot arm realizes material transfer, the sprue cutter frame performs sprue trimming and waste recycling, the air-cooled conveyor platform cools the material, and the waste collection structure recycles and reuses the cut sprue waste.

Benefits of technology

It has enabled automated production of screwdrivers, improved production efficiency, reduced raw material costs, saved resources, enhanced the adjustability and flexibility of the sprue cutter frame and the docking accuracy with the robotic arm, and improved the stability and ease of maintenance of the production line.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses an automated injection molding production line, aiming to provide an automated injection molding production line that improves production efficiency and saves injection molding resources. It includes a robotic arm, around which are arranged an injection molding machine, a cutter bar feeder frame, a sprue cutter frame, and an air-cooled belt conveyor line; a cutter bar feeder platform, with a linear guide mechanism connected to the cutter bar feeder frame and several cutter bar slots; a sprue cutter carrier platform, with an air shear structure connected to the sprue cutter frame and an air shear clearance opening; a waste collection structure, connected to the sprue cutter frame and connected to an injection sprue return box; and an air-cooled carrier platform, with a conveyor belt and fan connected to the air-cooled belt conveyor line and a placement slot. The beneficial effects of this utility model are: automated injection molding production assembly line; high operational efficiency; reduced raw material costs and resource conservation; improved adjustment flexibility and docking accuracy; improved stability and ease of maintenance.
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Description

Technical Field

[0001] This utility model relates to the field of screwdriver manufacturing technology, and in particular to an automated injection molding production line. Background Technology

[0002] A screwdriver is a common tool used to tighten screws into place. It usually has a thin wedge-shaped head that can be inserted into the slot or notch of the screw head. During the production process, a handle needs to be installed on the screwdriver shank, and the handle is injection molded by an injection molding machine.

[0003] Chinese Patent Authorization Announcement No.: CN 110202741 B, Authorization Announcement Date: December 6, 2024. This invention proposes an automatic feeding device for a screwdriver production line, including a frame, a feeding device for automatic feeding, a gripping device for automatic gripping, a trimming device for trimming after injection molding, a cooling device for cooling the screwdriver handle after injection molding, and a feeding device for automatically unloading the finished product. The shortcomings of this technical solution are: 1. Insufficient flow and functionality in injection molding and production, reducing production efficiency; 2. Difficulty in quickly collecting residual material from the injection molding gate, wasting resources of the injection molding production line.

[0004] In summary, existing screwdriver injection molding production suffers from low production efficiency and material waste. Utility Model Content

[0005] This invention aims to overcome the shortcomings of existing screwdriver production, such as low production efficiency and material waste, and provides an automated injection molding production line that improves production efficiency and saves injection molding resources.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automated injection molding production line includes a robotic arm, around which are arranged an injection molding machine, a cutter bar feeder frame, a sprue cutter frame, and an air-cooled belt conveyor line. The injection molding machine is located to the left of the robotic arm, the cutter bar feeder frame is located behind the robotic arm, the sprue cutter frame is located in front of the robotic arm, and the air-cooled belt conveyor line is located to the right of the sprue cutter frame. A cutter bar feeder platform is also included, with the cutter bar feeder frame connected to a linear guide mechanism. The cutter bar feeder platform is connected to the linear guide mechanism and has several cutter bar slots. A shearing... The system includes: a sprue carrier platform, a sprue cutter frame connected to an air shear structure, a sprue carrier platform detachably connected to the sprue cutter frame, an air shear clearance opening extending from the air shear structure; a waste collection structure connected to the sprue cutter frame, with a sprue return box connected to the waste collection structure; and an air-cooled carrier platform, an air-cooled belt carrier line connected to a conveyor belt and a fan, an air-cooled carrier platform connected to the conveyor belt, a placement slot on the air-cooled carrier platform, and a placement slot below the fan.

[0008] The injection molding machine is used for injection molding of the sprue handle and feeds the sprue handle material to the robot arm. The sprue handle feeding platform on the sprue handle feeding machine, through the movement of the linear guide mechanism, feeds the sprue handle from the sprue handle slot to the robot arm. The sprue cutter frame, through the scissor section of its air shear structure extending into the air shear clearance port, performs gate trimming on the sprue handle placed on the sprue cutter carrier platform by the robot arm. The air-cooled belt conveyor line moves the air-cooled carrier platform via a conveyor belt. The air-cooled carrier platform holds the screwdrivers after sprue cutting through a placement slot, and a fan cools the screwdrivers. The robot arm forms an automated injection molding production line by transferring materials between the injection molding machine, sprue handle feeding machine, sprue cutter frame, and air-cooled belt conveyor line. At the same time, the waste collection structure on the sprue cutter frame actively returns the cut sprue handle material through the injection sprue return box to be mixed with new material for use, reducing raw material waste. This achieves the effects of automated injection molding production line assembly for screwdrivers, high efficiency, reduced raw material costs, and resource conservation.

[0009] Preferably, the lower end of the sprue cutter frame is equipped with a support base, to which an adjusting rod is connected. The adjusting rod is threadedly connected to an adjusting nut. The sprue cutter frame is connected to a mounting plate with mounting holes. The adjusting rod is inserted into these holes, and the adjusting nut is positioned below the mounting plate. The lower end of the sprue cutter frame utilizes the support base to improve connection stability. The adjusting rod, with its external threads, and the adjusting nut, with its internal threaded hole, supports the inserted mounting plate by adjusting the height of the nut. This allows for flexible adjustment of the sprue cutter frame's height, facilitating rapid adaptation to the robotic arm. This improves the adjustability and flexibility of the sprue cutter frame and enhances the docking accuracy with the robotic arm.

[0010] Preferably, the upper end of the shear frame is equipped with a work plate. The shear frame has a positioning hole one, and the work plate is bolted to the shear frame through the positioning hole one. The shear carrier platform includes a support rod and a plate. The work plate has a positioning hole two, and one end of the support rod is bolted to the shear frame through the positioning hole two. The plate is connected to the other end of the support rod. The upper end of the shear frame is connected to the work plate, which is bolted to the shear frame to support the support rod and the plate. The plate is placed on the support rod to facilitate the placement of the pneumatic shear structure below. Both the support rod and the plate are fixed by bolts. This achieves the effect of improving the assembly stability of the shear frame and the shear carrier platform and facilitating later maintenance.

[0011] Preferably, the platen has two stations: station one and station two. The air shear clearance port is located between station one and station two. Two air shear structures are provided and arranged mirror-image to each other. The platen has two stations, station one and station two, where the shear sections of both air shear structures extend from the air shear clearance port to respectively target the sprue of the injection molding cutter at station one or station two. This achieves the effect of improving the operating efficiency of the injection molding production line.

[0012] Preferably, the plate is connected to a limiting seat. The plate has three positioning holes, and the limiting seat is bolted to the plate through the three positioning holes. The limiting seat has a tool holder clearance groove. Since the diameter of the tool holder is smaller than that of the tool shank, the plate supports the tool holder through the limiting seat, while the clearance groove limits the movement of the tool holder. This achieves the effect of improving the shearing stability and accuracy of the injection molding gate.

[0013] Preferably, the waste collection structure includes a guide plate with two through holes. An air shear structure passes through the first through hole, and a support rod passes through the second through hole. The guide plate is connected to an mounting cylinder with a fixing slot. A fixing strip is connected to the injection molding sprue return box, and the fixing strip is inserted into the fixing slot. The guide plate, passing through the support rod and air shear structure, is positioned below the flat plate to collect the sheared sprue waste, thus improving collection comprehensiveness and preventing omissions. The injection molding sprue return box is connected to the fixing slot of the mounting cylinder via the fixing strip, allowing for quick insertion and removal of the box for easy replacement. This achieves the effect of improving collection efficiency and saving injection molding resources.

[0014] Preferably, the waste collection structure includes support rod one and support rod two, both of which are connected to the guide plate. Support rod one and support rod two have different heights, and the collection box is connected to the side of the guide plate with the lower horizontal height. Support rod one has two members connected to one side of the guide plate, and support rod two has two members connected to the other side of the guide plate. Due to the different heights of support rods one and two, the guide plate tilts, guiding the waste material to automatically enter the collection box for collection. This further improves collection efficiency and saves injection molding resources.

[0015] Preferably, the guide plate is equipped with a baffle, which is connected to the edge of the guide plate. The baffle connected to the edge of the guide plate prevents waste material from splashing out after shearing, thereby further improving collection efficiency and saving injection molding material resources.

[0016] The beneficial effects of this utility model are: the screwdriver enables automated injection molding production assembly lines; it achieves high operational efficiency; it reduces raw material costs and saves resources; it improves the adjustability and flexibility of the sprue cutter frame and the docking accuracy with the robotic arm; it enhances stability and facilitates later maintenance; and it improves the efficiency of injection molding material resource collection. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a cross-sectional view of the connection between the sprue carrier platform and the guide plate.

[0020] In the diagram: 1. Robotic arm, 2. Injection molding machine, 3. Tool bar feeder frame, 4. Sprue cutter frame, 5. Air-cooled belt conveyor line, 6. Tool bar feeder table, 7. Linear guide mechanism, 8. Tool bar groove, 9. Sprue cutter carrier table, 10. Pneumatic shear structure, 11. Clearance port, 12. Injection sprue return box, 13. Air-cooled carrier table, 14. Drive belt, 15. Fan, 16. Placement slot, 17. Support base, 18. Adjusting rod, 19. Adjusting nut, 20. Mounting plate, 21. Working plate, 22. Support rod, 23. Flat plate, 24. Station 1, 25. Station 2, 26. Limiting seat, 27. Clearance groove, 28. Guide plate, 29. Mounting cylinder, 30. Fixing slot, 31. Fixing strip, 32. Support rod 1, 33. Support rod 2, 34. Baffle. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components illustrated in these embodiments do not limit the scope of this application. For ease of illustration, spatial relative terms such as “up,” “down,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, an element described as being “below” other elements or features would be positioned “up” other elements or features. Thus, the exemplary term “down” can include both up and down orientations. The device may be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale. Techniques, processes, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, processes, and equipment should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0024] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0025] Example 1:

[0026] like Figure 1 , 2As shown, an automated injection molding production line includes a robot arm 1, an injection molding machine 2, a cutter bar feeder frame 3, a sprue cutter frame 4, and an air-cooled belt conveyor line 5 arranged around the robot arm 1. The injection molding machine 2 is located to the left of the robot arm 1, the cutter bar feeder frame 3 is located behind the robot arm 1, the sprue cutter frame 4 is located in front of the robot arm 1, and the air-cooled belt conveyor line 5 is located to the right of the sprue cutter frame 4; a cutter bar feeder platform 6 is provided, the cutter bar feeder frame 3 is connected to a linear guide mechanism 7, the cutter bar feeder platform 6 is connected to the linear guide mechanism 7, and the cutter bar feeder platform 6 is provided with several cutter bar slots 8; and a sprue cutter carrier platform 9 is provided. The sprue cutter frame 4 is connected to a pneumatic shear structure 10. The sprue cutter carrier 9 is detachably connected to the sprue cutter frame 4. The sprue cutter carrier 9 is provided with a pneumatic shear clearance opening 11, and the pneumatic shear structure 10 extends out of the pneumatic shear clearance opening 11. A waste collection structure is connected to the sprue cutter frame 4 and is connected to an injection molding sprue return box 12. An air-cooled carrier 13 is connected to an air-cooled belt carrier line 5, which is connected to a conveyor belt 14 and a fan 15. The air-cooled carrier 13 is connected to the conveyor belt 14 and is provided with a placement slot 16. The air-cooled carrier 13 is placed below the fan 15.

[0027] like Figure 2 As shown, the lower end of the cutter frame 4 is provided with a support base 17, the support base 17 is connected to an adjusting rod 18, the adjusting rod 18 is threadedly connected to an adjusting nut 19, the cutter frame 4 is connected to a mounting plate 20, the mounting plate 20 is provided with mounting holes, the adjusting rod 18 is inserted into the mounting holes, and the adjusting nut 19 is placed below the mounting plate 20.

[0028] like Figure 1 , 3 As shown, the upper end of the cutter frame 4 is provided with a working plate 21. The cutter frame 4 is provided with a positioning hole 1. The working plate 21 is bolted to the cutter frame 4 through the positioning hole 1. The cutter carrier platform 9 includes a support rod 22 and a flat plate 23. The working plate 21 is provided with a positioning hole 2. One end of the support rod 22 is bolted to the cutter frame 4 through the positioning hole 2. The flat plate 23 is connected to the other end of the support rod 22.

[0029] like Figure 1 As shown, the plate 23 is provided with station 1 24 and station 2 25. The air shear clearance port 11 is located between station 1 24 and station 2 25. The air shear structure 10 is provided with two and arranged in a mirror image.

[0030] like Figure 1 , 3 As shown, the plate 23 is connected to the limiting seat 26. The plate 23 is provided with positioning hole three. The limiting seat 26 and the plate 23 are connected by bolts through the positioning hole three. The limiting seat 26 is provided with a tool holder relief groove 27.

[0031] like Figure 1 , 3As shown, the waste collection structure includes a guide plate 28, which has a through hole one and a through hole two. The air shear structure 10 passes through the through hole one, and the support rod 22 passes through the through hole two. The guide plate 28 is connected to an installation cylinder 29, which has a fixing slot 30. The injection molding sprue return box 12 is connected to a fixing strip 31, which is inserted into the fixing slot 30.

[0032] like Figure 1 , 3 As shown, the waste collection structure includes support rod 1 32 and support rod 2 33. Both support rod 1 32 and support rod 2 33 are connected to the guide plate 28. The heights of support rod 1 32 and support rod 2 33 are different. The injection molding sprue return box 12 is connected to the side of the guide plate 28 with the lower horizontal height.

[0033] like Figure 3 As shown, the guide plate 28 is provided with a baffle 34, which is connected to the edge of the guide plate 28.

[0034] like Figure 1-3 As shown: Mechanical device 1 adopts existing six-axis robot equipment, injection molding machine 2 adopts existing injection molding machine equipment, linear guide mechanism 7 adopts existing roller linear guide equipment, conveyor belt 14 adopts existing chain plate type conveyor belt equipment, and fan 15 adopts existing fan equipment.

[0035] The air shear structure 10 adopts existing pneumatic shear equipment. The air shear structure 10 includes a pneumatic part and a shear part. The air shear structure 10 passes through a through hole one, and the shear part of the air shear structure 10 passes through a through hole one. The guide plate 28 does not contact the shear part to prevent affecting the shearing action of the shear part. The cylinder part is bolted to the working plate 21 for fixation.

[0036] In use: The screwdriver handle is formed in the injection molding machine 2 through injection molding. The robot arm 1 takes out the screwdriver handle. The screw bar is pre-placed in the screw bar groove 8. The robot arm 1 embeds the screw bar into the screwdriver handle. The screwdriver handle with the screw bar is placed on station 1 24 and station 2 25. At this time, the screw bar is placed in the screw bar groove 8 and the sprue of the screwdriver handle is placed in the scissor section of the air shear structure 10. When the air shear structure 10 is started, the sprue is cut off. Then, the robot arm 1 puts the cut screwdriver handle into the placement groove 16. The conveyor belt 14 and fan 15 are started to move the air-cooled carrier platform 13, thereby cooling the screwdriver handle and making the screwdriver handle hard enough for use. The screwdriver injection molding production is completed. The cut sprue residue enters the injection molding sprue return box 12 along the inclined surface of the guide plate 28 for recycling. After sufficient recycling, the sprue residue can be put back into the injection molding machine 2 for reuse by pulling out the fixing strip 31 from the fixing slot 30.

[0037] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An automated injection molding production line, characterized in that it includes: A robotic arm (1) is provided around which an injection molding machine (2), a cutter bar feeder frame (3), a sprue cutter frame (4), and an air-cooled belt carrier line (5) are arranged. The injection molding machine (2) is located on the left side of the robotic arm (1), the cutter bar feeder frame (3) is located on the rear side of the robotic arm (1), the sprue cutter frame (4) is located on the front side of the robotic arm (1), and the air-cooled belt carrier line (5) is located on the right side of the sprue cutter frame (4). The tool bar feeding platform (6) is connected to the linear guide mechanism (7) of the tool bar feeding frame (3). The tool bar feeding platform (6) is connected to the linear guide mechanism (7). The tool bar feeding platform (6) is provided with several tool bar slots (8). The shearing platform (9) is connected to the shearing frame (4) with a pneumatic shear structure (10). The shearing platform (9) is detachably connected to the shearing frame (4). The shearing platform (9) is provided with a pneumatic shear clearance opening (11). The pneumatic shear structure (10) extends out of the pneumatic shear clearance opening (11). Waste collection structure, which is connected to the sprue frame (4), and the waste collection structure is connected to the injection sprue return box (12). Air-cooled vehicle platform (13), the air-cooled belt vehicle line (5) is connected to a conveyor belt (14) and a fan (15), the air-cooled vehicle platform (13) is connected to the conveyor belt (14), the air-cooled vehicle platform (13) is provided with a placement slot (16), and the air-cooled vehicle platform (13) is placed below the fan (15).

2. The automated injection molding production line according to claim 1, characterized in that, The lower end of the cutter frame (4) is provided with a support base (17), the support base (17) is connected to an adjusting rod (18), the adjusting rod (18) is threadedly connected to an adjusting nut (19), the cutter frame (4) is connected to a mounting plate (20), the mounting plate (20) is provided with mounting holes, the adjusting rod (18) is inserted into the mounting holes, and the adjusting nut (19) is placed below the mounting plate (20).

3. The automated injection molding production line according to claim 1, characterized in that, The upper end of the cutter frame (4) is provided with a working plate (21). The cutter frame (4) is provided with a positioning hole one. The working plate (21) is bolted to the cutter frame (4) through the positioning hole one. The cutter carrier platform (9) includes a support rod (22) and a flat plate (23). The working plate (21) is provided with a positioning hole two. One end of the support rod (22) is bolted to the cutter frame (4) through the positioning hole two. The flat plate (23) is connected to the other end of the support rod (22).

4. An automated injection molding production line according to claim 3, characterized in that, The plate (23) is provided with station one (24) and station two (25), the air shear clearance port (11) is located between station one (24) and station two (25), and the air shear structure (10) is provided with two and arranged in a mirror image.

5. An automated injection molding production line according to claim 4, characterized in that, The plate (23) is connected to the limiting seat (26). The plate (23) is provided with positioning hole three. The limiting seat (26) and the plate (23) are connected by bolts through positioning hole three. The limiting seat (26) is provided with tool holder relief groove (27).

6. An automated injection molding production line according to claim 3, characterized in that, The waste collection structure includes a guide plate (28), which has a through hole one and a through hole two. The air shear structure (10) passes through the through hole one, and the support rod (22) passes through the through hole two. The guide plate (28) is connected to an installation cylinder (29), which has a fixing slot (30). The injection molding sprue return box (12) is connected to a fixing strip (31), which is inserted into the fixing slot (30).

7. An automated injection molding production line according to claim 6, characterized in that, The waste collection structure includes support rod one (32) and support rod two (33). Both support rod one (32) and support rod two (33) are connected to the guide plate (28). The heights of support rod one (32) and support rod two (33) are different. The injection molding sprue return box (12) is connected to the side of the guide plate (28) with the lower horizontal height.

8. An automated injection molding production line according to claim 7, characterized in that, The guide plate (28) is provided with a baffle (34), which is connected to the edge of the guide plate (28).