A trimming device for plastic shell after injection

Abstract

The utility model relates to the technical field of round injection molding part finishing, specifically to a kind of finishing device after plastic shell injection molding, including base, workpiece placing tray, horizontal slider, first threaded rod, rectangular frame, blade mounting seat, trimming blade, vertical slider, second threaded rod, pivot, clamping slot, clamping column and disc injection molding part.This device is the finishing device specially used for round injection molding part, and the cooperation of workpiece placing tray, first threaded rod, horizontal slider, second threaded rod and vertical slider, when finishing workpiece, only need to rotate workpiece placing tray, trimming blade can finish workpiece, compared with manual trimming, the experience and skill of operator are not limited, efficiency is greatly improved, and trimming is uniform, can effectively avoid the situation that multiple repair, repair and damage workpiece occur, guarantee product quality and production efficiency, trimming blade position can be adjusted simultaneously, and different height and diameter of round injection molding part can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of circular injection molded part trimming technology, specifically a trimming device for plastic shells after injection molding. Background Technology

[0002] In the plastic injection molding process, round injection molded parts such as flower pot bases and speaker shells often have burrs and excess material on their edges after injection molding. To ensure the product's appearance and prevent scratches from these burrs on users later, they need to be trimmed and removed. Traditionally, trimming these round injection molded parts is done manually by workers using hand-held trimming knives. When workers operate manually, they rely mainly on experience and skill, making it difficult to ensure the uniformity of trimming. This is not only inefficient but also prone to over-trimming and under-trimming, resulting in inconsistent product quality. Furthermore, manual trimming can easily damage the injection molded parts if not handled carefully. Therefore, there is an urgent need for a specialized device that can efficiently and evenly trim the burrs on round injection molded parts. Utility Model Content

[0003] The purpose of this invention is to provide a finishing device for plastic shells after injection molding, so as to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a trimming device for injection-molded plastic shells, comprising a base, a workpiece placement tray rotatably mounted at the center of the top surface of the base, the workpiece placement tray being adapted to the workpiece to be trimmed, a circular groove being formed at the center of the top surface of the base, a rotating shaft being vertically rotatably mounted at the center of the circular groove via a bearing, a slot being formed on the top surface of the rotating shaft, and a locking post adapted to the locking post being vertically fixedly connected at the center of the bottom surface of the workpiece placement tray, the locking post being engaged in the locking post within the locking post, and a rubber anti-slip pad being laminated to the inner wall of the workpiece placement tray. The top surface of the base has a groove, and a horizontal slider is slidably mounted in the groove. A first threaded rod is threaded through the horizontal slider and rotatably mounted in the groove on the top surface of the base via bearings at both ends. A rectangular frame is vertically fixed to the top surface of the horizontal slider, and a vertical slider is slidably mounted in the groove of the rectangular frame. A second threaded rod is threaded through the vertical slider and rotatably mounted at the top and bottom ends of the horizontal slider via bearings at both ends. A blade mounting seat is fixedly connected to one side of the vertical slider, and a trimming blade is mounted on the blade mounting seat.

[0005] Preferably, the axis of the first threaded rod intersects the axis of the rotating shaft, ensuring that the trimming blade always trims the workpiece evenly, regardless of the adjustment.

[0006] Preferably, an adjustment handle is installed at one end of both the first threaded rod and the second threaded rod, and an anti-slip pad is installed on the bottom surface of the base; a magnetic absorbing piece is embedded at the bottom end of the locking post, and the magnetic absorbing piece is magnetically attracted in the locking groove of the rotating shaft.

[0007] Preferably, the device is used to trim the edges of circular injection molded parts, and is suitable for trimming circular injection molded parts such as flower pot bases and speaker shells.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] This invention features an ingenious design, with the device specifically designed for trimming round injection molded parts. Through the coordination of a workpiece placement tray, a first threaded rod, a horizontal slider, a second threaded rod, and a vertical slider, the device allows for trimming of workpieces simply by rotating the workpiece placement tray. This trimming action eliminates the need for operator experience or skill limitations, significantly improving efficiency and ensuring uniform trimming. It effectively prevents over-trimming, under-trimming, and workpiece damage, guaranteeing product quality and production efficiency. Furthermore, the trimming blade position is adjustable, allowing it to adapt to round injection molded parts of varying heights and diameters, demonstrating high versatility and a wide range of applications. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0011] Figure 2 This is a schematic diagram of the structure of the workpiece placement tray and the base when they are separated.

[0012] Figure 3 This is a top view of the base structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the working structure of the device of this utility model.

[0014] In the figure: 1. Base; 2. Workpiece placement tray; 3. Horizontal slider; 4. First threaded rod; 5. Rectangular frame; 6. Blade mounting seat; 7. Trimming blade; 8. Vertical slider; 9. Second threaded rod; 10. Rotary shaft; 10a. Slot; 11. Locking post; 12. Disc injection molded part. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1 to 4This utility model provides a technical solution: a trimming device for injection-molded plastic shells, comprising a base 1, a workpiece placement tray 2 rotatably mounted at the center of the top surface of the base 1, the inner wall of the workpiece placement tray 2 being reinforced with a rubber anti-slip pad, the inner wall of the workpiece placement tray 2 having a trumpet-shaped structure, the diameter of the inner wall decreasing sequentially from top to bottom; a groove is provided on the top surface of the base 1, a horizontal slider 3 is slidably mounted in the groove, a first threaded rod 4 is horizontally threaded through the horizontal slider 3, the two ends of the first threaded rod 4 are rotatably mounted in the groove on the top surface of the base 1 via bearings, a rectangular frame 5 is vertically fixedly connected to the top surface of the horizontal slider 3, a vertical slider 8 is slidably mounted in the groove of the rectangular frame 5, a second threaded rod 9 is vertically threaded through the vertical slider 8, the two ends of the second threaded rod 9 are rotatably mounted at the top and bottom ends of the horizontal slider 3 via bearings, a blade mounting seat 6 is fixedly connected to one side of the vertical slider 8, and a trimming blade 7 is mounted on the blade mounting seat 6.

[0017] Furthermore, the axis of the first threaded rod 4 intersects the axis of the rotating shaft 10. One end of the first threaded rod 4 and the second threaded rod 9 are both equipped with an adjustment handle. The bottom surface of the base 1 is equipped with an anti-slip pad. A magnetic absorbing piece is embedded in the bottom end of the locking post 11 and magnetically attracts the locking piece in the locking groove 10a of the rotating shaft 10.

[0018] Furthermore, a circular groove is provided at the center of the top surface of the base 1, and a rotating shaft 10 is vertically mounted at the center of the circular groove via a bearing. A slot 10a is provided on the top surface of the rotating shaft 10. A locking post 11 that is adapted to the slot 10a is vertically fixed at the center of the bottom surface of the workpiece placement tray 2. The locking post 11 is locked in the slot 10a.

[0019] Before using the device, select a suitable workpiece placement tray 2 according to the shape of the circular injection molded part 12 to be trimmed. Align the locking pin 11 on the bottom surface of the workpiece placement tray 2 with the locking groove 10a on the top surface of the rotating shaft 10 and insert it. Utilize the magnetic attraction between the magnetic piece at the bottom of the locking pin 11 and the locking groove 10a to stably install the workpiece placement tray 2 on the base 1. Rotate the adjustment handle at one end of the first threaded rod 4. The rotation of the first threaded rod 4 drives the horizontal slider 3 to move horizontally within the groove on the top surface of the base 1, thereby driving the rectangular frame 5 and the trimming blade 7 to move horizontally, achieving horizontal position adjustment. Rotate the adjustment handle at one end of the second threaded rod 9. The rotation of the second threaded rod 9 drives the vertical slider 8 to slide up and down within the track groove of the rectangular frame 5, thereby driving the trimming blade 7 to move up and down, completing the vertical position adjustment. Through the coordinated adjustment of the two, the blade of the trimming blade 7 is adapted to the edge of the circular injection molded part 12.

[0020] During trimming, the disc injection molded part 12 is placed in the workpiece placement tray 2. The rubber anti-slip pad on the inner wall increases friction and prevents slippage during rotation. The worker holds the center of the disc injection molded part 12 and rotates the workpiece placement tray 2. The workpiece placement tray 2 rotates around the rotating shaft 10. At this time, the trimming blade 7 scrapes off the burrs on the edge of the disc injection molded part 12 to complete the trimming operation. Compared with the method of directly trimming with a hand-held trimming blade, this device is more efficient and the trimming is more uniform, avoiding the occurrence of over-trimming, missed trimming, or damage to the workpiece during trimming.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A finishing device for a plastic casing after injection molding, characterized in that: Includes a base (1), on which a workpiece placement tray (2) is rotatably installed at the center of the top surface of the base (1). A groove is provided on the top surface of the base (1), and a horizontal slider (3) is slidably installed in the groove. A first threaded rod (4) is installed through the horizontal thread on the horizontal slider (3). The two ends of the first threaded rod (4) are rotatably installed in the groove on the top surface of the base (1) through bearings. A rectangular frame (5) is vertically fixedly connected to the top surface of the horizontal slider (3). A vertical slider (8) is slidably installed in the groove of the rectangular frame (5). A second threaded rod (9) is installed through the vertical thread on the vertical slider (8). The two ends of the second threaded rod (9) are rotatably installed at the top and bottom ends of the horizontal slider (3) through bearings. A trimming blade (7) is installed on one side of the vertical slider (8).

2. The finishing device for injection-molded plastic shells according to claim 1, characterized in that: The base (1) has a circular groove at the center of its top surface. A rotating shaft (10) is vertically mounted at the center of the circular groove via a bearing. A slot (10a) is provided on the top surface of the rotating shaft (10). A locking post (11) that matches the slot (10a) is vertically fixed at the center of the bottom surface of the workpiece placement tray (2). The locking post (11) is engaged in the slot (10a).

3. The finishing device for injection-molded plastic shells according to claim 2, characterized in that: The inner wall of the workpiece placement tray (2) is coated with a rubber anti-slip pad.

4. The finishing device for injection-molded plastic shells according to claim 1, characterized in that: A blade mounting seat (6) is fixedly connected to one side of the vertical slider (8), and a trimming blade (7) is installed on the blade mounting seat (6).

5. The finishing device for injection-molded plastic shells according to claim 2, characterized in that: The axis of the first threaded rod (4) intersects the axis of the rotating shaft (10). An adjustment handle is installed at one end of both the first threaded rod (4) and the second threaded rod (9). An anti-slip pad is installed on the bottom surface of the base (1).

6. The finishing device for injection-molded plastic shells according to claim 2, characterized in that: A magnetic absorbing piece is embedded at the bottom of the card post (11), and the magnetic absorbing piece is magnetically attracted in the card slot (10a) of the rotating shaft (10).

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