Injection molding product blow shaping tooling

Abstract

The utility model relates to injection moulded product post -treatment technical field especially injection moulded product blow moulding shaping frock, solved the problem that the shape precision and quality stability are insufficient after injection moulded product injection moulding of prior art. A kind of injection moulded product blow moulding shaping frock, including processing frame, the processing frame inside is placed and is shaped piece. The frock of the utility model forms double limiting structure by top limiting component and inner wall limiting component, effectively avoid the shift or deformation of and shaped piece in blow moulding shaping process. In top limiting component, first cylinder drives first drive rod and drives upper limiting frame overturn, can accurately press and fit the upper end of and shaped piece, limit its up and down and lateral displacement.

Description

Technical Field

[0001] This utility model relates to the field of post-processing technology for injection molded products, and in particular to a blow molding shaping fixture for injection molded products. Background Technology

[0002] Blow molding forming fixtures for injection molded products are specialized equipment designed to solve defects such as warping, shrinkage marks, and dimensional deviations that easily occur after injection molding. It uses a precise temperature control system to locally or entirely heat and soften the injection molded product, then utilizes a customized mold cavity with high-pressure airflow for blow molding, causing the product to conform to the inner wall of the mold and reshape, quickly correcting shape errors. The fixture is equipped with dual pressure and temperature monitoring modules, allowing parameters to be adjusted according to different materials (such as PP, ABS, etc.) to avoid damaging the product surface. It is widely used in the post-processing of high-precision injection molded products such as appliance housings and automotive parts, significantly improving product yield and appearance quality.

[0003] Therefore, we propose a blow molding forming fixture for injection molded products to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a blow molding shaping fixture for injection molded products, which solves the problem of insufficient shape accuracy and quality stability of injection molded products after injection molding in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A blow molding forming fixture for injection molded products includes a processing rack, inside which a part to be molded is placed. A top limiting component for limiting the upper end of the part to be molded is fixedly disposed on the rear side of the processing rack, and an inner wall limiting component for limiting the inner wall of the part to be molded is fixedly disposed on the bottom inner side of the top limiting component.

[0006] As a preferred embodiment of the above technical solution, the top limiting component includes a first cylinder, a support frame is fixedly installed at the bottom of the processing frame, two first cylinders are symmetrically and movably hinged at the top of the support frame, and the output ends of the two first cylinders are fixedly connected to a first drive rod. A side frame is also fixedly installed at the rear of the processing frame, and an upper limiting frame for limiting the upper end of the part to be molded is movably hinged to the rear of the side frame.

[0007] As a preferred embodiment of the above technical solution, two protective frames are also fixedly installed on the rear side of the processing frame. The two protective frames are respectively sleeved on the bottom end of the corresponding first cylinder and the upper limit frame, and the ends of the two first drive rods away from the first cylinder are movably hinged to the bottom end of the corresponding upper limit frame.

[0008] As a preferred embodiment of the above technical solution, the inner wall limiting component includes a second cylinder, and several internal limiting frames are fixedly installed in a horizontal array on the bottom inner side of the upper limiting frame, with the bottom of each internal limiting frame fitting against the bottom inner side of the part to be shaped.

[0009] As a preferred embodiment of the above technical solution, two symmetrical second cylinders are fixedly installed on the inner side of each of the internal limiting frames. The output ends of the two second cylinders are fixedly connected to second drive rods, and the ends of the two second drive rods away from the second cylinders are fixedly installed with inner wall abutments.

[0010] As a preferred embodiment of the above technical solution, two heating fans are fixedly installed on the top of the support frame, and the top output ends of the two heating fans are directly facing the bottom of the part to be shaped. A controller is fixedly installed on the front side of the processing frame.

[0011] This utility model has at least the following beneficial effects: This fixture forms a double-limiting structure through a top limiting component and an inner wall limiting component, effectively preventing the part to be molded from shifting or deforming during the blow molding process. In the top limiting component, the first cylinder drives the first drive rod to rotate the upper limiting frame, which can accurately press the upper end of the part to be molded, limiting its vertical and lateral displacement.

[0012] This utility model also has the following beneficial effects: In the inner wall limiting component, the inner limiting frame is pre-fitted to the bottom of the inner side of the part to be molded to provide basic support. The second cylinder then pushes the inner wall abutment to fit tightly against the inner wall of the part to be molded, preventing the inner wall from sinking or expanding. The product is blow-molded by a heating fan, and the blow molding is completed within a set time to achieve the shaping effect, which can effectively improve the shape accuracy and quality stability of injection molded products. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional view of the rear side of the overall structure of this utility model; Figure 3 This is a schematic internal cross-sectional view of the overall structure of this utility model; Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Processing frame; 2. Part to be shaped; 3. Top limiting component; 4. Inner wall limiting component; 5. First cylinder; 6. Support frame; 7. First drive rod; 8. Side frame; 9. Upper limiting frame; 10. Protective frame; 11. Second cylinder; 12. Inner limiting frame; 13. Controller; 14. Second drive rod; 15. Inner wall abutment; 16. Heating fan. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] Reference Figure 1-4 A blow molding forming fixture for injection molded products includes a processing frame 1, a part to be molded 2 is placed inside the processing frame 1, a top limiting component 3 for limiting the upper end of the part to be molded 2 is fixedly provided on the rear side of the processing frame 1, and an inner wall limiting component 4 for limiting the inner wall of the part to be molded 2 is fixedly provided on the bottom inner side of the top limiting component 3.

[0018] Furthermore, the top limiting assembly 3 includes a first cylinder 5. A support frame 6 is fixedly installed at the bottom of the processing frame 1. Two first cylinders 5 are symmetrically hinged to the top of the support frame 6, and the output ends of the two first cylinders 5 are fixedly connected to a first drive rod 7. A side frame 8 is also fixedly installed on the rear side of the processing frame 1. An upper limiting frame 9 for limiting the upper end of the part to be molded 2 is movably hinged to the rear side of the side frame 8. Specifically, when the part to be molded 2 is placed in the processing frame 1, the first cylinder 5 receives the start signal from the controller 13 and drives the first drive rod 7 to extend and retract through internal air pressure. The first drive rod 7 drives the upper limiting frame 9, which is hinged to it, to rotate around the hinge point on the side frame 8. As the upper limiting frame 9 flips, the part of its inner side that is in contact with the part to be molded 2 gradually approaches and finally presses against the upper end of the part to be molded 2. By utilizing its own adaptability to the upper contour of the part to be molded 2, it restricts the part to be molded 2 from shifting upward or sideways during the blow molding process, ensuring the stability of the upper position of the workpiece and providing accurate upper positioning for subsequent processing.

[0019] Furthermore, two protective frames 10 are fixedly installed on the rear side of the processing frame 1. The two protective frames 10 are respectively sleeved on the bottom ends of the corresponding first cylinder 5 and upper limit frame 9. The ends of the two first drive rods 7 away from the first cylinder 5 are movably hinged to the bottom ends of the corresponding upper limit frames 9. Specifically, when the first cylinder 5 drives the upper limit frame 9 to operate, the protective frames 10 are always sleeved on the outer side of the bottom ends of both. Debris and dust generated during processing will be blocked by the protective frames 10, preventing them from entering the cylinder or the hinged parts, thus avoiding impurities from affecting the cylinder's extension and retraction accuracy and the smoothness of rotation at the hinge. If a slight collision occurs during equipment operation, the protective frames 10 can buffer the impact of external forces, reducing the direct effect of external forces on the cylinder and the key structure at the bottom end of the upper limit frame 9, ensuring the continuous and stable operation of the core drive components, and reducing the risk of downtime due to component damage.

[0020] Furthermore, the inner wall limiting component 4 includes a second cylinder 11, and several internal limiting frames 12 are fixedly installed in a horizontal array on the bottom inner side of the upper limiting frame 9. The bottom of each internal limiting frame 12 is attached to the bottom inner side of the part to be molded 2. Specifically, the internal limiting frame 12 is used for the fixed installation of the second cylinder 11, and the bottom of the internal limiting frame 12 can limit the part to be molded 2 from the inside.

[0021] Furthermore, each internal limiting frame 12 has two symmetrically arranged second cylinders 11 fixedly installed on its inner side. The output ends of the two second cylinders 11 are fixedly connected to second drive rods 14, and the ends of the two second drive rods 14 furthest from the second cylinders 11 are fixedly fitted with inner wall abutments 15. Specifically, the internal limiting frame 12 is pre-placed inside the part to be molded 2, with its bottom fitting against the bottom of the inner side of the part to be molded 2 to provide basic support. When the top limiting assembly 3 completes its upper limiting, the second cylinder 11 receives a signal and starts, driving the second drive rod 14 to extend outwards. The second drive rod 14 pushes the inner wall abutment 15 connected at its end, moving it towards the inner wall of the part to be molded 2 until the inner wall abutment 15 is completely fitted against the inner wall of the part to be molded 2. Through the tight fit between the abutment and the inner wall, the inner wall of the part to be molded 2 is restricted from concave inwards or bulging outwards during blow molding. Simultaneously, the anti-slip material of the abutment prevents relative sliding between the abutment and the workpiece during processing, further ensuring the stability of the inner wall shape of the part to be molded 2.

[0022] Furthermore, two heating fans 16 are fixedly installed on the top of the support frame 6, with the top output ends of both heating fans 16 facing the bottom of the part to be molded 2. A controller 13 is fixedly installed on the front side of the processing frame 1. Specifically, after receiving the processing instructions preset by the operator, the controller 13 sends a start signal to the heating fans 16. After the heating fans 16 start, they generate hot air, which is guided by the air guide shroud at the air outlet and adjusted to a blowing angle suitable for the bottom of the part to be molded 2, so that the hot air is blown evenly to the bottom of the part to be molded 2. During the blow molding process, the controller 13 monitors the working status of the heating fans 16 in real time. If the fan temperature is detected to be abnormally high, the overheat protection device will be automatically triggered to cut off the fan power and stop the machine, so as to avoid high temperature damage to the equipment or affect the processing of the workpiece. At the same time, the controller 13 can automatically stop the heating fans 16 after the preset processing time is reached to complete the blow molding process. It can also quickly stop the fan operation in case of an emergency by pressing the emergency stop button.

[0023] In summary: First, the top limiting component 3 drives the limiting frame to rotate via the first cylinder 5, thus limiting the upper end of the part to be molded 2. Simultaneously, the inner wall limiting component 4 pushes the abutment against the inner wall via the second cylinder 11, completing the inner wall limiting of the workpiece. This dual limiting mechanism ensures the part to be molded 2 maintains a stable posture during processing. Then, the controller 13 starts the heating fan 16 according to preset parameters. The fan guides hot air evenly to the bottom of the workpiece through the air guide shroud, using the hot air to bring the material at the bottom of the workpiece to the molding conditions, completing the blow molding process within a set time. The protective frame 10 protects the core drive components throughout the process, preventing impurities and external forces from affecting equipment operation. Through the coordinated operation of all components, the shape defects of the injection molded parts are effectively corrected, improving shape accuracy. At the same time, stable automated control ensures consistent product quality for each batch, reducing defects caused by human error.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blow molding forming fixture for injection molded products, comprising a processing frame (1), characterized in that, The processing rack (1) contains a part to be shaped (2). A top limiting component (3) for limiting the upper end of the part to be shaped (2) is fixedly provided on the rear side of the processing rack (1). An inner wall limiting component (4) for limiting the inner wall of the part to be shaped (2) is fixedly provided on the bottom inner side of the top limiting component (3).

2. The blow molding forming fixture for injection molded products according to claim 1, characterized in that, The top limiting component (3) includes a first cylinder (5). A support frame (6) is fixedly installed at the bottom of the processing frame (1). Two first cylinders (5) are symmetrically hinged at the top of the support frame (6), and the output ends of the two first cylinders (5) are fixedly connected to a first drive rod (7). A side frame (8) is also fixedly installed on the rear side of the processing frame (1). An upper limiting frame (9) for limiting the upper end of the part to be molded (2) is movably hinged to the rear side of the side frame (8).

3. The blow molding forming fixture for injection molded products according to claim 2, characterized in that, Two protective frames (10) are also fixedly installed on the rear side of the processing frame (1). The two protective frames (10) are respectively sleeved on the bottom end of the corresponding first cylinder (5) and the upper limit frame (9). The ends of the two first drive rods (7) away from the first cylinder (5) are movably hinged to the bottom end of the corresponding upper limit frame (9).

4. The blow molding forming fixture for injection molded products according to claim 3, characterized in that, The inner wall limiting component (4) includes a second cylinder (11). Several internal limiting frames (12) are fixedly installed in a horizontal array on the inner bottom of the upper limiting frame (9). The bottom of each internal limiting frame (12) is attached to the inner bottom of the part to be shaped (2).

5. The blow molding forming fixture for injection molded products according to claim 4, characterized in that, Two symmetrical second cylinders (11) are fixedly installed on the inner side of each of the internal limiting frames (12). The output ends of the two second cylinders (11) are fixedly connected to the second drive rods (14), and the ends of the two second drive rods (14) away from the second cylinders (11) are fixedly installed with inner wall abutments (15).

6. The blow molding forming fixture for injection molded products according to claim 2, characterized in that, Two heating fans (16) are fixedly installed on the top of the support frame (6), and the top output ends of the two heating fans (16) are directly facing the bottom of the part to be shaped (2). A controller (13) is fixedly installed on the front side of the processing frame (1).

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