Annular water gap cutting device

Abstract

The utility model relates to the technical field of tool jigs, in particular to an annular water gap cutting device which comprises a base, a water gap cutting jig installed on the base, a lifting frame installed on the base and a downward pressing module connected to the lifting frame and corresponding to the position over the water gap cutting jig. The water gap cutting jig comprises an annular cutter, a workpiece positioning rod connected into the annular cutter, a workpiece supporting plate arranged on the workpiece positioning rod in a sleeving mode and a spring piece arranged in the annular cutter and elastically connected to the workpiece supporting plate in an abutting mode, and a cutting edge part used for cutting a water gap is formed at the upper end of the annular cutter. The workpiece positioning rod is matched with the workpiece supporting plate through the spring piece, in the process that a product is pressed down to cut off a water gap, the position of the product can be stabilized, the cutting-off precision is guaranteed to a great extent, and the product quality is powerfully improved. And through the design that the spring piece drives the workpiece supporting plate to rebound to jack up the product after cutting is completed, the problem that the product is easily clamped in the cutter and is difficult to take out is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to an annular sprue removal device. Background Technology

[0002] In injection molding, a ring-shaped sprue often forms around the finished product. To meet product quality and appearance requirements, sprue removal is essential. Currently, some companies use simple mechanical removal methods, such as mechanical devices equipped with fixed cutting tools. These devices, driven by machinery, align the cutting tool with the sprue area for cutting. Compared to manual removal, this method improves efficiency, reduces labor costs, and automates production to a certain extent.

[0003] However, existing mechanical removal solutions using fixed cutters have significant drawbacks. After the sprue is removed, the product easily gets stuck in the cutter, making removal extremely difficult. This not only wastes a lot of time and reduces production efficiency, but also risks secondary damage to the product due to improper handling during removal, affecting product quality. Frequent adjustments to the cutter or mechanical structure to remove the product also increase equipment wear and maintenance costs, which is not conducive to the needs of large-scale, high-efficiency production. Therefore, developing a technology that can efficiently remove the sprue from injection-molded products and facilitate easy product removal is urgently needed. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] An annular sprue removal device includes a base, a sprue removal fixture mounted on the base, a lifting frame mounted on the base, and a pressing module connected to the lifting frame and corresponding to the top of the sprue removal fixture. The sprue removal fixture includes an annular cutter, a workpiece positioning rod connected inside the annular cutter, a workpiece support plate sleeved on the workpiece positioning rod, and a spring member disposed inside the annular cutter and elastically abutting against the workpiece support plate. A cutting edge for removing sprues is formed at the upper end of the annular cutter.

[0006] Preferably, the pressing module includes a pressing cylinder mounted on the lifting frame and a pressing block connected to the piston end of the pressing cylinder.

[0007] Preferably, a lower pressure plate is connected to the piston end of the lower pressure cylinder, and sliders are connected to both ends of the lower pressure plate. A slide rail plate corresponding to both sides of the lower pressure plate is provided between the base and the lifting frame. The slider is slidably connected to the slide rail plate, and the lower pressure block is installed at the lower end of the lower pressure plate.

[0008] Preferably, the lifting frame includes a lifting plate located above the base and a column connecting the lifting plate and the base. The column is positioned at the corner of the lifting plate, and the pressing module is installed on the lifting plate.

[0009] Preferably, the base is configured as a box structure, and an electrical control module is installed inside the base. The electrical control module is connected to the downward cylinder via an air circuit.

[0010] Preferably, the ring cutter includes a lower fixed plate and an annular portion disposed on the fixed plate. The cutting edge is formed at the upper end of the annular portion. The positioning rod, workpiece support plate, and spring are all located in the annular portion. The workpiece positioning rod is fixedly installed on the fixed plate and extends into the annular portion along the inside of the annular portion. The spring abuts between the fixed plate and the workpiece support plate. Without external force, the upper end of the workpiece support plate is pushed out by the spring to a position higher than or equal to the upper end of the annular portion.

[0011] Preferably, screws are connected to the lower end of the workpiece support plate and the fixing plate, and the screws are used to fix the spring to the workpiece support plate and the fixing plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By using a spring mechanism to engage the workpiece positioning rod and workpiece support plate, the product position is stabilized during the process of pressing down to remove the sprue, greatly ensuring cutting accuracy and significantly improving product quality. Furthermore, the design of the spring mechanism driving the workpiece support plate to spring back and lift the product after cutting effectively solves the problem of products easily getting stuck in the cutting tool and difficult to remove, significantly improving production efficiency and greatly reducing labor costs. In addition, compared to existing simple mechanical cutting devices, the frequent adjustments required due to product removal difficulties are greatly reduced, lowering equipment wear and maintenance costs, making it particularly suitable for large-scale, high-efficiency production needs.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a utility model Figure 1 Schematic diagram of the structure at point A;

[0018] Figure 3 This is a schematic diagram of the structure of the water outlet cutting fixture, the product, and the lower pressure block arranged in a relative manner in this utility model;

[0019] Figure 4 This is a schematic diagram showing the disassembled structure of the water outlet cutting fixture and the lower pressure block in this utility model;

[0020] Figure 5 This is a partial cross-sectional structural diagram of the water outlet cutting fixture, product, and lower pressure block in the pressed state of this utility model.

[0021] The reference numerals and names in the figure are as follows:

[0022] Base 10, sprue cutting fixture 20, ring cutter 21, fixing plate 211, ring part 212, workpiece positioning rod 22, workpiece support plate 23, spring part 24, blade part 25, screw part 26, lifting frame 30, lifting plate 31, column 32, pressing module 40, pressing cylinder 41, pressing block 42, pressing plate 43, slider 44, slide rail plate 45. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Please see Figure 1-5 In this embodiment of the present invention, an annular sprue removal device includes a base 10, a sprue removal fixture 20 mounted on the base 10, a lifting frame 30 mounted on the base 10, and a pressing module 40 connected to the lifting frame 30 and corresponding to the top of the sprue removal fixture 20. The sprue removal fixture 20 includes an annular cutter 21, a workpiece positioning rod 22 connected inside the annular cutter 21, a workpiece support plate 23 sleeved on the workpiece positioning rod 22, and a spring member 24 disposed inside the annular cutter 21 and elastically abutting against the workpiece support plate 23. A cutting edge 25 for removing sprues is formed at the upper end of the annular cutter 21.

[0025] When the annular sprue removal device is in operation, the injection-molded product with an annular sprue is first placed on the workpiece positioning rod 22. The product is precisely positioned by the workpiece positioning rod 22 and stably positioned above the workpiece support plate 23. After the pressing module 40 is activated, the pressing module 40 descends first and contacts the product. Then, the pressing module 40 exerts force, causing the product to overcome the elastic force of the spring 24, so that the product and the workpiece support plate 23 move downward together. As the downward movement progresses, the product contacts the cutting edge 25 at the upper end of the annular cutter 21, and the cutting edge 25 begins to remove the annular sprue. During this removal process, the spring 24 continuously generates elastic reaction force to ensure the stability of the product when the sprue is removed by the pressing. When the sprue removal operation is completed, the pressing module 40 returns to its original position. At this time, the spring 24 releases its elastic potential energy, driving the workpiece support plate 23 to spring back upward, thus smoothly lifting the product after the sprue has been removed, making it easy for the operator to remove the product.

[0026] By cooperating with the workpiece positioning rod 22 and the workpiece support plate 23 via the spring element 24, the product position is stabilized during the process of the product being pressed down to cut off the sprue, greatly ensuring the cutting accuracy and significantly improving product quality. Furthermore, the design of the spring element 24 driving the workpiece support plate 23 to spring back and lift the product after cutting effectively solves the problem of the product easily getting stuck in the cutting tool and difficult to remove, significantly improving production efficiency and greatly reducing labor costs. In addition, compared with existing simple mechanical cutting devices, the frequent adjustments to the equipment due to product removal difficulties are greatly reduced, lowering equipment wear and maintenance costs, which is particularly suitable for large-scale, high-efficiency production needs.

[0027] Please see Figure 1-2Based on the above technical solution, a further proposed pressing module 40 includes a pressing cylinder 41 mounted on a lifting frame 30 and a pressing block 42 connected to the piston end of the pressing cylinder 41. A pressing plate 43 is connected to the piston end of the pressing cylinder 41, and sliders 44 are connected to both ends of the pressing plate 43. A slide rail plate 45 corresponding to both sides of the pressing plate 43 is provided between the base 10 and the lifting frame 30. The sliders 44 are slidably connected to the slide rail plate 45, and the pressing block 42 is mounted on the lower end of the pressing plate 43. The lifting frame 30 includes a lifting plate 31 located above the base 10 and a column 32 connected between the lifting plate 31 and the base 10. The column 32 is abutted at the corner of the lifting plate 31, and the pressing module 40 is mounted on the lifting plate 31. In the above technical solution, the pressing module 40 uses a pressing cylinder 41 as its power source. The power output is stable and controllable, precisely providing the required downward pressure for the cutting operation. This ensures uniform force from the annular cutter 21 when cutting the sprue, further guaranteeing cutting accuracy and improving product quality. The piston end of the pressing cylinder 41 is connected to the pressing plate 43, and both ends of the pressing plate 43 are slidably connected to the slide rail plate 45 via sliders 44. This structure effectively enhances the stability of the pressing process, preventing shaking and making the cutting operation smoother and more reliable. The lifting frame 30 consists of a lifting plate 31 and a column 32. The column 32 is connected to the corner of the lifting plate 31. The pressing module 40 is installed on the lifting plate 31, providing a stable installation foundation for the pressing module 40. This structural design also makes reasonable use of space, resulting in a compact layout and small footprint, facilitating large-scale deployment in limited production areas and meeting the needs of large-scale, high-efficiency production. Simultaneously, the stable structure reduces vibration and wear during equipment operation, extending the equipment's service life and reducing maintenance costs.

[0028] Please see Figure 1 Based on the above technical solution, it is further proposed that the base 10 be configured as a box structure, with an electrical control module housed inside. This electrical control module is connected to the downward-pressing cylinder 41 via a pneumatic circuit. The box structure of the base 10 provides excellent protection for the electrical control module, effectively preventing dust and moisture damage, avoiding damage to electrical components due to external environmental factors, ensuring stable equipment operation, and extending equipment lifespan. Furthermore, integrating the electrical control module into the base 10 greatly optimizes the overall layout of the device, making the equipment structure more compact, saving production space, and facilitating flexible deployment in production sites of different sizes.

[0029] Please see Figure 2-5Based on the above technical solution, a further proposed annular cutter 21 includes a lower fixed plate 211 and an annular portion 212 disposed on the fixed plate 211. The cutting edge 25 is formed at the upper end of the annular portion 212. The workpiece positioning rod 22, workpiece support plate 23, and spring member 24 are all located within the annular portion 212. The workpiece positioning rod 22 is fixedly mounted on the fixed plate 211 and extends into the annular portion 212. The spring member 24 abuts between the fixed plate 211 and the workpiece support plate 23. Without external force, the upper end of the workpiece support plate 23 is pushed out by the spring member 24 to a position higher than or equal to the upper end of the annular portion 212. When this annular sprue removal device is in operation, the injection-molded product with an annular sprue is first placed on the workpiece positioning rod 22. The workpiece positioning rod 22 is fixedly mounted on the lower fixed plate 211 of the annular cutter 21 and extends into the annular portion 212, enabling precise positioning of the product. At this time, the product is located above the workpiece support plate 23. The pressing module 40 is activated and moves downward, bringing the annular cutter 21, composed of a lower fixed plate 211 and an annular portion 212 above it, closer to the product. As the annular cutter 21 presses down, the product is pressed down until it contacts the cutting edge 25 formed on the upper end of the annular portion 212, and the cutting edge 25 then begins to cut off the annular sprue. During this process, the spring member 24 located between the fixed plate 211 and the workpiece support plate 23 is compressed as the workpiece support plate 23 is pressed down with the product, ensuring the stability of the product during the cutting process. In addition, without external force, the upper end of the workpiece support plate 23 is pushed out by the spring member 24 to be higher than or equal to the upper end of the annular portion 212, making product placement more convenient. After the sprue is cut off, the pressing module 40 returns to its original position, and the elastic force of the spring member 24 causes the workpiece support plate 23 to spring back upward, lifting the product after the sprue has been cut off, making it easier to remove the product.

[0030] Please see Figure 3-5 Based on the above technical solution, it is further proposed that screws 26 be connected to the lower end of the workpiece support plate 23 and the fixing plate 211. The screws 26 are used to fix the spring 24 to the workpiece support plate 23 and the fixing plate 211. This structural design is ingenious and simple. With this setting, the workpiece support plate 23 will not push out the workpiece positioning rod 22 when it is lifted by the spring 24. It can restrict the workpiece support plate 23 without any structural limit on the inner side of the annular part 212 and the workpiece positioning rod 22, so that the structure restricting the workpiece support plate 23 will not cause any obstruction to the placement of the product.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. An annular shroud trimming device characterized by, The utility model provides a water gap cutting tool, which comprises a base (10), a water gap cutting tool (20) mounted on the base (10), a lifting frame (30) mounted on the base (10), and a pressing die set (40) connected to the lifting frame (30) and corresponding to the water gap cutting tool (20) directly above, the water gap cutting tool (20) comprises a ring-shaped cutter (21), a workpiece positioning rod (22) connected in the ring-shaped cutter (21), a workpiece supporting plate (23) sleeved on the workpiece positioning rod (22), and a spring member (24) arranged in the ring-shaped cutter (21) and elastically abutting against the workpiece supporting plate (23), and a cutting edge part (25) for cutting off the water gap is formed at the upper end of the ring-shaped cutter (21).

2. A shroud cutting device according to claim 1, wherein The pressing die set (40) comprises a pressing cylinder (41) mounted on the lifting frame (30), and a pressing block (42) connected to the piston end of the pressing cylinder (41).

3. A shroud cutting device according to claim 2, wherein The piston end of the pressing cylinder (41) is connected with a pressing plate (43), both ends of the pressing plate (43) are connected with sliding blocks (44), and slide rail plates (45) corresponding to both sides of the pressing plate (43) are arranged between the base (10) and the lifting frame (30), the sliding blocks (44) are slidingly connected to the slide rail plates (45), and the pressing block (42) is mounted at the lower end of the pressing plate (43).

4. A shroud cutting device according to any one of claims 1-3, characterized in that The lifting frame (30) comprises a lifting plate (31) located above the base (10) and a stand column (32) connected between the lifting plate (31) and the base (10), the stand column (32) is butted at the corner position of the lifting plate (31), and the pressing die set (40) is mounted on the lifting plate (31).

5. A shroud trimming device according to claim 2, wherein The base (10) is provided in the form of a box body, an electrical control module is arranged in the base (10), and the electrical control module is connected with the pressing cylinder (41) in the gas circuit.

6. The shroud trimming device of claim 1 wherein, The ring-shaped cutter (21) comprises a fixed plate (211) at the lower part and a ring-shaped part (212) arranged on the fixed plate (211), the cutting edge part (25) is formed at the upper end of the ring-shaped part (212), the workpiece positioning rod (22), the workpiece supporting plate (23) and the spring member (24) are all located in the ring-shaped part (212), wherein the workpiece positioning rod (22) is fixedly installed on the fixed plate (211) and extends to the ring-shaped part (212) along the inside of the ring-shaped part (212), the spring member (24) abuts between the fixed plate (211) and the workpiece supporting plate (23), and under the action of no external force, the upper end of the workpiece supporting plate (23) is pushed out by the spring member (24) to be higher than or equal to the upper end of the ring-shaped part (212).

7. A shroud trimming device according to claim 6, wherein Screw members (26) are connected to the lower end of the workpiece supporting plate (23) and the fixed plate (211), and the screw members (26) are used for fixedly connecting the spring member (24) to the workpiece supporting plate (23) and the fixed plate (211).

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