Constant-temperature type injection molding part water gap punching equipment

Abstract

The utility model relates to the technical field of injection molding part production, and discloses constant-temperature type injection molding part water gap punching equipment. The constant-temperature type injection molding part water gap punching equipment comprises a rack, a working table is arranged on the rack, a rotating disc is rotatably installed on the working table, a plurality of jigs used for bearing lower cutting dies are arranged on the rotating disc, and a punching mechanism and a water gap carrying assembly are erected on the working table; a heating mechanism is arranged at the end, away from the punching mechanism, of the workbench and comprises a bearing plate erected on the workbench, a heating table is arranged on the bearing plate, and a silica gel mold is arranged on the heating table. A manipulator is further arranged on the working table, and a material taking assembly is installed at the free end of the manipulator. An injection molding product punched by the constant-temperature type injection molding part water gap punching equipment does not need to be heated on silica gel injection equipment before silica gel layer injection, and the silica gel layer injection efficiency of the injection molding product is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding production technology, specifically a constant temperature injection molding gate punching device. Background Technology

[0002] In the manufacturing process of plastic products, injection molding is typically used. During molding, excess molding material is generated at the gate (known in the industry as a sprue). To ensure product integrity and a good appearance, the remaining sprue needs to be removed after molding. Currently, traditionally, this is done by manually trimming the sprue after molding. However, manual trimming is inefficient, produces poor results, and is labor-intensive. Therefore, sprue cutting machines have been developed to improve upon this manual trimming method.

[0003] Currently, existing sprue punching machines have limited functionality and cannot meet the diverse production needs of injection molded parts. For example, in the injection molding industry, many injection molded parts require a silicone encapsulation injection molding process after sprue punching, meaning that a silicone layer is injected onto the outside of the injection molded product. However, before the silicone layer is injected, both the injection molded product and the mold supporting it must be kept at a certain temperature to ensure the fusion between the silicone layer and the injection molded product. Existing technologies typically heat the injection molded product and the mold before silicone injection, which often results in low efficiency for the silicone injection process.

[0004] Therefore, there is an urgent need for a constant-temperature injection molding part gate punching equipment to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a constant temperature injection molding part gate punching equipment to solve the problem of low silicone layer injection efficiency caused by heating the injection equipment before the silicone layer is injected in the existing injection molding products and molds.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This utility model provides a constant temperature injection molding part sprue cutting device, including a frame, a worktable on the frame, a turntable rotatably mounted on the worktable, a plurality of fixtures for supporting the lower cutting mold on the turntable, a punching mechanism for cutting sprue material from the injection molding part in the lower cutting mold and a sprue handling assembly for transporting the sprue material in the lower cutting mold on the worktable; a heating mechanism is provided on the worktable at the end of the turntable away from the punching mechanism, the heating mechanism including a support plate mounted on the worktable, a heating platform on the support plate, and a silicone mold on the heating platform.

[0008] The worktable is also equipped with a robotic arm, and the free end of the robotic arm is equipped with a material handling component. The robotic arm uses the material handling component to transport the injection molded product in the lower die to the silicone mold.

[0009] As an optional technical solution for a constant temperature injection molding part gate punching equipment, the heating table includes a heat-conducting plate mounted on the support plate and a limiting plate installed on both sides of the heat-conducting plate. The heat-conducting plate is provided with multiple positioning posts, and the silicone mold is provided with multiple matching positioning holes.

[0010] As an optional technical solution for a constant temperature injection molding part gate punching equipment, the heat-conducting plate is equipped with a temperature sensor and multiple heating rods.

[0011] As an optional technical solution for a constant temperature injection molding part gate punching equipment, a rotary motor is installed on the worktable, and the turntable is installed horizontally at the output end of the rotary motor.

[0012] As an optional technical solution for a constant temperature injection molding part gate punching equipment, the turntable is provided with multiple limiting holes at equal intervals along its circumferential edge, and a limiting cylinder is vertically installed on the worktable below the turntable. The telescopic end of the limiting cylinder is connected to a limiting rod that matches the limiting holes.

[0013] As an optional technical solution for a constant temperature injection molding part gate punching equipment, the punching mechanism includes a support frame installed on the worktable, a punching cylinder is provided at the top of the support frame, an upper cutting die is installed at the telescopic end of the punching cylinder, a cutter is installed in the upper cutting die, and one side edge of the turntable extends to the bottom of the upper cutting die.

[0014] As an optional technical solution for a constant temperature injection molding part gate punching equipment, the material handling assembly includes a mounting frame connected to the free end of the robot arm, and the mounting frame is equipped with multiple finger cylinders.

[0015] As an optional technical solution for a constant temperature injection molding part gate punching equipment, the circumferential edge of the worktable is equipped with a protective cover, and the worktable is provided with a transition platform at one side edge of the turntable. Multiple baffles are spaced apart on the transition platform, and a clearance channel for removing and lowering the cutting mold is formed between every two baffles.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model provides a constant temperature injection molding part sprue punching equipment. The constant temperature injection molding part sprue punching equipment includes a frame, a worktable on the frame, a turntable rotatably mounted on the worktable, multiple fixtures for supporting the lower cutting mold on the turntable, a punching mechanism and a sprue handling assembly mounted on the worktable; a heating mechanism is mounted on the worktable at the end of the turntable away from the punching mechanism, the heating mechanism includes a support plate mounted on the worktable, a heating platform on the support plate, and a silicone mold on the heating platform; a robot arm is also mounted on the worktable, and a material handling assembly is mounted on the free end of the robot arm.

[0018] In the above structure, the injection-molded part or the lower die carrying the injection-molded part is placed on the turntable by manual labor or an external robot. The lower die rotates to the bottom of the upper die via the turntable. The punching cylinder drives the upper die to move downward to cut the sprue material from the injection-molded part in the lower die. The turntable continues to rotate, moving the injection-molded part with the sprue material removed to the bottom of the sprue handling assembly. The sprue material is grabbed, transported, and collected by the sprue handling assembly. Finally, the robot drives the material-grabbing assembly to grab the injection-molded product from the lower die and transfer it into the silicone mold. Since the silicone mold is mounted on a heating platform, the heating of the silicone mold by the heating platform keeps the injection-molded product and the silicone mold at the target temperature. When the receiving slot on the silicone mold is full of injection-molded product, the silicone mold can be directly transported to the silicone injection equipment for silicone injection without heating the silicone mold or injection-molded product on the silicone injection equipment, thus improving the silicone layer injection efficiency of the injection-molded product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the constant temperature injection molding part gate punching equipment in this utility model embodiment;

[0020] Figure 2 This is a schematic diagram of a portion of the structure of the constant temperature injection molding part gate punching device in an embodiment of this utility model, viewed from a first perspective.

[0021] Figure 3 This is a schematic diagram of a portion of the structure of the constant temperature injection molding part gate punching device in an embodiment of this utility model, viewed from a second perspective.

[0022] Figure 4 This is an exploded view of the heating mechanism in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the material handling component in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the turntable structure in an embodiment of the present invention;

[0025] Figure 7This is a schematic diagram of the punching mechanism in an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Frame; 10. Workbench; 11. Protective cover; 12. Baffle; 13. Transition table;

[0028] 2. Turntable; 20. Fixture; 21. Lower cutting mold; 22. Rotary motor; 23. Limit cylinder; 231. Limit rod; 24. Limit hole; 25. Injection molded product;

[0029] 3. Punching mechanism; 30. Support frame; 31. Punching cylinder; 32. Upper cutting die; 33. Cutting blade;

[0030] 4. Sprue handling assembly; 40. Waste bin;

[0031] 5. Heating mechanism; 50. Support plate; 51. Heating table; 52. Limiting plate; 53. Positioning post; 54. Silicone mold; 55. Positioning hole; 56. Heating rod; 57. Temperature sensor;

[0032] 6. Robotic arm; 60. Material handling assembly; 61. Mounting frame; 62. Finger cylinder; 63. Gripper. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0038] like Figure 1-7 As shown, this utility model provides a constant temperature injection molding part sprue cutting equipment. The constant temperature injection molding part sprue cutting equipment includes a frame 1, a worktable 10 on the frame 1, a turntable 2 rotatably mounted on the worktable 10, a plurality of jigs 20 for supporting the lower cutting mold 21 on the turntable 2, a punching mechanism 3 for cutting sprue material from the injection mold 21 and a sprue transporting assembly 4 for transporting the sprue material from the lower cutting mold 21 on the worktable 10; a heating mechanism 5 is provided on the worktable 10 at the end of the turntable 2 away from the punching mechanism 3, the heating mechanism 5 includes a support plate 50 mounted on the worktable 10, a heating platform 51 on the support plate 50, and a silicone mold 54 on the heating platform 51; wherein, a robot arm 6 is also provided on the worktable 10, and a material picking assembly 60 is installed on the free end of the robot arm 6, the robot arm 6 transports the injection mold 25 from the lower cutting mold 21 to the silicone mold 54 through the material picking assembly 60.

[0039] This utility model provides a constant-temperature injection molding part sprue cutting device. The injection-molded part or the lower cutting mold 21 carrying the injection-molded part is placed on a turntable 2 by manual operation or an external robotic arm 6. The lower cutting mold 21 rotates on the turntable 2 to a position below the upper cutting mold 32. A punching cylinder 31 drives the upper cutting mold 32 downwards to cut the sprue material from the injection-molded part inside the lower cutting mold 21. The turntable 2 continues to rotate, moving the injection-molded part with the cut sprue material to a sprue transport assembly 4. The sprue material is then gripped, transported, and collected by the sprue transport assembly 4. Finally, the robotic arm 6 drives the material to be picked up. Component 60 picks up the injection molded product 25 from the lower die 21 and places it into the silicone mold 54. Since the silicone mold 54 is mounted on the heating table 51, the heating of the silicone mold 54 by the heating table 51 keeps the injection molded product 25 and the silicone mold 54 at the target temperature. When the receiving slot on the silicone mold 54 is full of the injection molded product 25, the silicone mold 54 can be directly transported to the silicone injection equipment for silicone injection without heating the silicone mold 54 or the injection molded product 25 on the silicone injection equipment, thus improving the silicone layer injection efficiency of the injection molded product 25.

[0040] Specifically, such as Figure 1 As shown, the constant temperature injection molding part gate punching equipment provided in this embodiment has a dual-station structure. A protective cover 11 is installed on the circumferential edge of the worktable 10. A transition platform 13 is provided on the longer side edge of the worktable 10. The two ends of the transition platform 13 extend to one side of the two turntables 2, so that the manual or external robot arm 6 can temporarily place the lower cutting mold 21 on the transition platform 13 when picking up and putting down the lower cutting mold. Three baffles 12 are spaced apart on the upper part of the transition platform 13. A passage for picking up and putting down the lower cutting mold 21 is formed between every two baffles 12. Under the above structure, the protective cover 11 and the baffles 12 provide safety protection for the operators and effectively prevent dust and debris from the external environment from contaminating the injection molded product 25.

[0041] In this embodiment, as Figure 4As shown, the heating mechanism 5 includes a support plate 50 mounted on the worktable 10 via support columns. Two lower supports are provided at the bottom of the heating table 51, which are mounted on the support plate 50 to prevent heat conduction from the heating table 51 to the support plate 50, effectively improving the heat conduction efficiency of the heating table 51 on the silicone mold 54 and the injection-molded product 25 within the silicone mold 54. Specifically, the heating table 51 consists of a heat-conducting plate and limiting plates 52 installed on both sides of the heat-conducting plate. The heat-conducting plate has four through holes along the X-axis, and each through hole is fitted with a heating rod 56 for heating the heat-conducting plate. A temperature sensor 57 is installed inside the heat-conducting plate to monitor the temperature of the heat-conducting plate in real time, so that the heat-conducting plate can always be kept at the set target temperature to provide constant temperature heating for the silicone mold 54 and the injection molded product 25 inside the silicone mold 54. When the robot arm 6 fills each cavity on the silicone mold 54 with the injection molded product 25, the entire silicone mold 54 carrying the injection molded product 25 can be directly transported to the silicone injection equipment for silicone layer injection, without the need for secondary heating of the silicone mold 54 and the injection molded product 25, thus improving the efficiency of silicone layer injection of the injection molded product 25.

[0042] Furthermore, the heat-conducting plate is provided with at least four positioning posts 53, and the silicone mold 54 is provided with matching positioning holes 55. The distribution shape of the positioning posts 53 and positioning holes 55 can be arranged according to the shape of the silicone mold 54. Since the silicone mold 54 will be replaced after being fully loaded with injection molded product 25, its replacement frequency is high. With the structure of positioning posts 53 and positioning holes 55, the silicone mold 54 can be quickly positioned on the heat-conducting plate for constant temperature heating and collection of injection molded product 25, which effectively improves the constant temperature heating efficiency of silicone mold 54 and injection molded product 25.

[0043] In this embodiment, as Figure 5 As shown, the material handling assembly 60 includes a mounting frame 61 connected to the free end of the robotic arm 6. The mounting frame 61 is equipped with three finger cylinders 62. The gripping ends of the finger cylinders 62 are connected to grippers 63, and each finger cylinder 62 is equipped with an independent drive cylinder. When the injection molded products 25 are of different sizes and shapes, the drive cylinder can independently drive the corresponding finger cylinder 62 to pick up and place different injection molded products 25, increasing the applicability of the material handling assembly 60 to picking up and placing different injection molded products 25. It should be noted that the number of finger cylinders 62 and the shape of the grippers 63 can be adjusted according to the specifications of the injection molded products 25 to achieve maximum handling efficiency.

[0044] In this embodiment, as Figure 6As shown, a rotary motor 22 is installed on the worktable 10 below the central axis of the turntable 2. The turntable 2 is horizontally mounted on the output end of the rotary motor 22. The rotary motor 22 drives the turntable 2 to rotate a certain distance, which improves the accuracy of the injection molded parts on the turntable 2 under the punching mechanism 3 and the sprue handling assembly 4. Specifically, a limit cylinder 23 is vertically mounted on the worktable 10. The telescopic end of the limit cylinder 23 is connected to a limit rod 231. Multiple limit holes 24 are provided at equal intervals along the circumferential edge of the turntable 2. When the turntable 2 rotates the lower cutting mold 21 to the target position, the limit cylinder 23 drives the limit rod 231 to rise and insert into the limit hole 24 to limit the entire turntable 2. This makes the punching mechanism 3 more stable and accurate when cutting the sprue material on the injection molded parts in the lower cutting mold 21.

[0045] In this embodiment, as Figure 7 As shown, the punching mechanism 3 includes a support frame 30 mounted on the workbench 10. A punching cylinder 31 is vertically mounted on the top of the support frame 30. An upper cutting die 32 is telescopically mounted on the punching cylinder 31. Multiple cutters 33 for cutting sprue material are installed inside the upper cutting die 32. It should be noted that one edge of the turntable 2 extends to the lower part of the upper cutting die 32. When the turntable 2 rotates, the lower cutting die 21 can be rotated to the lower part of the upper cutting die 32, so that the punching cylinder 31 drives the upper cutting die 32 to move relative to the lower cutting die 21 to cut the sprue material of the injection molded part inside the lower cutting die 21.

[0046] It should be noted that, in this embodiment, as Figure 3 As shown, a waste bin 40 is provided on the workbench 10 on one side of the sprue handling assembly 4. The sprue handling assembly 4 is composed of a Z-axis cylinder and an X-axis cylinder. A finger cylinder 62 is provided on the telescopic end of the X-axis cylinder, and a gripper 63 is provided on the telescopic end of the finger cylinder 62. The gripper 63 is driven by the Z-axis cylinder and the X-axis cylinder to clamp the cut sprue material and put it into the waste bin 40 for collection. The injection molded part described in this embodiment is an injection molded product 25 with sprue material attached.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A constant-temperature injection molding part sprue punching device, comprising a frame, a worktable mounted on the frame, a turntable rotatably mounted on the worktable, and a plurality of fixtures for supporting the lower cutting die on the turntable, characterized in that, The worktable is equipped with a punching mechanism for removing sprue from the injection molded parts in the lower die and a sprue handling assembly for transporting the sprue from the lower die; a heating mechanism is provided on the worktable at the end of the turntable away from the punching mechanism, the heating mechanism includes a support plate mounted on the worktable, a heating platform is provided on the support plate, and a silicone mold is provided on the heating platform. The worktable is also equipped with a robotic arm, and the free end of the robotic arm is equipped with a material handling component. The robotic arm uses the material handling component to transport the injection molded product in the lower die to the silicone mold.

2. The constant-temperature injection molding part gate punching equipment according to claim 1, characterized in that, The heating platform includes a heat-conducting plate mounted on the support plate and limiting plates installed on both sides of the heat-conducting plate. The heat-conducting plate is provided with multiple positioning posts, and the silicone mold is provided with multiple matching positioning holes.

3. The constant-temperature injection molding part gate punching equipment according to claim 2, characterized in that, The heat-conducting plate is equipped with a temperature sensor and multiple heating rods.

4. The constant-temperature injection molding part gate punching equipment according to claim 1, characterized in that, The workbench is equipped with a rotary motor, and the turntable is installed horizontally at the output end of the rotary motor.

5. A constant-temperature injection molding part gate punching device according to claim 4, characterized in that, The turntable has multiple equidistant limiting holes at its circumferential edge. A limiting cylinder is vertically mounted on the worktable below the turntable, and the telescopic end of the limiting cylinder is connected to a limiting rod that matches the limiting holes.

6. The constant-temperature injection molding part gate punching equipment according to claim 1, characterized in that, The punching mechanism includes a support frame mounted on the workbench, a punching cylinder at the top of the support frame, an upper cutting die at the telescopic end of the punching cylinder, a cutter inside the upper cutting die, and one side edge of the turntable extending to the bottom of the upper cutting die.

7. A constant-temperature injection molding part gate punching device according to claim 6, characterized in that, The material handling assembly includes a mounting frame connected to the free end of the robotic arm, and the mounting frame is provided with multiple finger cylinders.

8. A constant-temperature injection molding part gate punching device according to claim 7, characterized in that, The workbench is equipped with a protective cover on its circumferential edge. The workbench is provided with a transition platform at one side edge of the turntable. Multiple baffles are spaced apart on the transition platform, and a clearance channel for picking up and putting down the cutting die is formed between every two baffles.

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