A water-knife device
By designing a gate-cutting device, which uses induction sensors and a drive mechanism to cut off the gates on the sides and bottom of plastic products, the problem of low gate removal efficiency in the injection molding process in the prior art is solved, and the injection molding efficiency is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- EVA PLASTIC & ELECTRONIC PROD (SHENZHEN) CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-12
AI Technical Summary
Existing technologies struggle to efficiently remove sprues from multiple locations during the injection molding process of plastic products, especially sprues on the sides and bottom, resulting in low injection molding efficiency.
Design a sprue cutting device, comprising a base plate, a bracket, a positioning station, multiple through holes, a cutter, and a drive mechanism. The device senses the product position through a sensor and uses the drive mechanism and a pressing mechanism to cut off the sprues on the side and bottom of the product, respectively.
It enables the simultaneous and efficient removal of sprue marks on the sides and bottom of plastic products, improving injection molding efficiency and ensuring product stability and safety during the cutting process.
Smart Images

Figure CN224348316U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of post-processing of injection molding, and more specifically, to a sprue cutting device. Background Technology
[0002] With economic development and improved living standards, various industrial products have entered people's lives, bringing convenience. Plastic products are an important component of industrial products. Plastic products are generally manufactured using injection molding.
[0003] To improve injection molding efficiency and adapt to the injection molding of plastic products with different shapes, many plastic products need to be injection molded through multiple gates at different locations. At the same time, due to the shape limitations of many plastic products, the gate type used cannot automatically cut off the gate, so the injection molded plastic products also have multiple gates that need to be removed. In addition, some plastic products have gates on the side and bottom surfaces, so a device is needed to simultaneously remove the gates on the side and bottom surfaces of the plastic products. Utility Model Content
[0004] To address the aforementioned deficiencies in the prior art, a water inlet cutting device is provided.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a sprue cutting device, including a base plate and a support bracket for supporting the base plate. The top surface of the base plate is provided with a material positioning station for positioning the product. The top surface of the base plate is provided with a plurality of first base plate through holes and a plurality of second base plate through holes located directly below the sprue of the product. A first cutter for cutting the sprue on the side of the product is provided in the first base plate through hole, and a second cutter for cutting the sprue on the bottom of the product is provided in the second base plate through hole. A first driving mechanism for driving the first cutter to cut the sprue is provided on the base plate, and a second driving mechanism for driving the second cutter to cut the sprue is provided on the base plate. A pressing mechanism for pressing the product is provided on the base plate, and a sensing sensor for sensing the product arriving at the material positioning station is provided on the base plate. The first driving mechanism, the second driving mechanism, and the pressing mechanism are all electrically connected to the sensing sensor.
[0006] Preferably, the first driving mechanism includes a first cylinder and a mounting plate. The mounting plate is slidably disposed on the bottom surface of the base plate. The mounting plate passes under a plurality of first base plate through holes in sequence. A plurality of first cutters are disposed on the mounting plate. The first cylinder is disposed on the bottom surface of the base plate. The output end of the first cylinder is connected to the mounting plate.
[0007] Preferably, the second drive mechanism includes a plurality of second cylinders disposed on the bottom surface of the base plate, the output ends of the plurality of second cylinders all facing directly below the corresponding through holes of the second base plate, a mounting bracket is disposed on the output end of the second cylinder, and the second cutter is disposed on the mounting bracket.
[0008] Preferably, the pressing mechanism includes multiple corner cylinders, each of which is located on the base plate near a corresponding first or second base plate through hole, and a first pressing rod for pressing down the product is provided on the output end of each corner cylinder.
[0009] Preferably, a second pressure rod with a downward pressure port is provided on the output end of the corner cylinder near the through hole of the first base plate.
[0010] Preferably, an elastic block is provided at the bottom end of the first pressure rod.
[0011] Preferably, the base plate is provided with multiple positioning blocks for positioning products at the incoming material positioning station, and the positioning blocks are provided with chamfers for guiding the incoming material.
[0012] Preferably, the support is provided with a storage box covering the bottom ends of multiple first bottom plate through holes and multiple second bottom plate through holes. A funnel connected to the storage box is provided on the bottom surface of the storage box. The funnel is a funnel with an opening and closing door at the discharge port.
[0013] The beneficial effects of this utility model are as follows: When the incoming product is fed into the material positioning station, the sprue on the side of the product and the sprue on the bottom are respectively located at the positions of the first bottom plate through hole and the second bottom plate through hole. After the sensing sensor senses the product in the material positioning station, the pressing mechanism presses the product to prevent the product from moving when the sprue is cut. Then, the first driving mechanism and the second driving mechanism drive the first cutter and the second cutter to move respectively. The first cutter cuts the sprue on the side of the product, and the second cutter moves the sprue on the bottom of the product. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0015] Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged view of region A in the middle;
[0016] Figure 3 This is a schematic diagram of the bottom structure of the storage box being completely removed in an embodiment of this utility model.
[0017] Reference numerals: 1 base plate, 10 first base plate through hole, 11 second base plate through hole, 12 sensor, 2 bracket, 3 first cutter, 4 second cutter, 5 first cylinder, 50 mounting plate, 6 second cylinder, 60 mounting bracket, 7 corner cylinder, 70 first pressure rod, 71 elastic block, 72 second pressure rod, 8 positioning block, 80 chamfer, 9 storage box, 90 funnel. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but 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. In addition, the directional terms mentioned in this utility model, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings. The directional terms are used to better and more clearly explain and understand this utility model, and are not intended to indicate or imply the necessary orientation of this utility model. Therefore, they should not be construed as limitations on this utility model.
[0019] Examples of embodiments of this utility model Figures 1 to 3As shown, a sprue-cutting device includes a base plate 1 and a support 2 for supporting the base plate 1. The top surface of the base plate 1 has a material positioning station for positioning the product. The top surface of the base plate 1 has multiple first base plate through holes 10 and multiple second base plate through holes 11 located directly below the sprue on the product. The first base plate through holes 10 are located directly below the sprue on the side of the product, and the second base plate through holes 11 are located directly below the sprue on the bottom surface of the product. At this time, there are two of each type of through hole. The two first base plate through holes 10 are located near the front of the base plate 1 and are spaced apart in the left-right direction. The two second base plate through holes 11 are located on the left and right sides of the base plate 1, near the rear. A first cutter 3 for cutting the sprue on the side of the product is installed inside the first base plate through hole 10. The two first cutters 3 are located near the right rear of the corresponding first base plate through hole 10. The blade edge is located near the top edge on the left side. A second cutter 4 for cutting the bottom surface of the product is provided in the through hole 11 of the second base plate. The two second cutters 4 are located on opposite sides of the corresponding through holes 11 of the second base plate. The blade edge is located near the top edge on the left side of the second cutter 4 on the left side, and the blade edge is located near the top edge on the right side of the second cutter 4 on the right side. A first driving mechanism for driving the first cutter 3 to cut the water outlet is provided on the base plate 1. A second driving mechanism for driving the second cutter 4 to cut the water outlet is provided on the base plate 1. A pressing mechanism for pressing the product is provided on the base plate 1. A sensing sensor 12 for sensing the product to arrive at the material positioning station is provided on the base plate 1. Preferably, the sensing sensor 12 is a laser displacement sensor. The laser displacement sensor is located in the middle position near the rear side on the top surface of the base plate 1. The first driving mechanism, the second driving mechanism, and the pressing mechanism are all electrically connected to the sensing sensor 12.
[0020] When the incoming product is loaded into the material positioning station, the sprue on the side and the sprue on the bottom of the product are positioned at the corresponding positions of the first bottom plate through hole 10 and the second bottom plate through hole 11, respectively. After the sensor 12 senses the product in the material positioning station, the pressing mechanism presses the product to prevent it from moving when the sprue is cut. Then, the first drive mechanism and the second drive mechanism drive the first cutter 3 and the second cutter 4 to move, respectively. The first cutter 3 cuts the sprue on the side of the product, and the second cutter 4 moves the sprue on the bottom of the product.
[0021] Further improvements, such as Figure 1 and Figure 3As shown, the first driving mechanism includes a first cylinder 5 and a mounting plate 50. The mounting plate 50 extends in the left-right direction and is slidably disposed on the bottom surface of the base plate 1. Preferably, two square rings are arranged at intervals in the left-right direction on the bottom surface of the base plate 1. The mounting plate passes through the two square rings in sequence, and the two square rings share the weight of the mounting plate 50. The mounting plate 50 passes under multiple first base plate through holes 10 in sequence. Multiple first cutters 3 are disposed on the mounting plate 50. Preferably, the first cutters 3 are detachably disposed on the mounting plate 50 by screws, thereby facilitating the maintenance of the first cutters 3. The first cylinder 5 is disposed on the bottom surface of the base plate 1, and the output end of the first cylinder 5 is connected to the mounting plate 50.
[0022] Further improvements, such as Figure 1 and Figure 3 As shown, the second drive mechanism includes a plurality of second cylinders 6 disposed on the bottom surface of the base plate 1. The output ends of the plurality of second cylinders 6 are all directly below the corresponding through holes 11 of the second base plate. A mounting bracket 60 is disposed on the output end of the second cylinder 6. The mounting bracket 60 is an L-shaped plate with an L-shaped cross section. The second cutter 4 is disposed on the mounting bracket 60. The second cutter 4 is detachably mounted on the mounting bracket 60 by screws, thereby facilitating the maintenance of the second cutter 4. The mounting bracket 60 is made of aluminum alloy material. Aluminum alloy material does not rust and is relatively light, reducing the gravity on the output end of the second cylinder 6. Preferably, a support ring is fixedly disposed on the bottom surface of the base plate 1 and sleeved on the output end of the second cylinder 6 to prevent the output end of the second cylinder 6 from deforming due to gravity.
[0023] Further improvements, such as Figure 1 and Figure 2 As shown, the pressing mechanism includes multiple corner cylinders 7, which are respectively located on the base plate 1 near the corresponding first base plate through hole 10 or second base plate through hole 11. Two corner cylinders 7 are located directly in front of the two first base plate through holes 10, and two corner cylinders 7 are located directly to the left of the left side of the second base plate through hole 11 and directly to the right side of the right side of the second base plate through hole 11. A first pressure rod 70 for pressing down the product is provided on the output end of the corner cylinder 7. The product is pressed down by the corner cylinder 7 and the first pressure rod 70 to prevent the product from moving upward when the water outlet is cut.
[0024] Further improvements, such as Figure 1 and Figure 2 As shown, a second pressure rod 72 is provided on the output end of the corner cylinder 7 near the through hole 10 of the first base plate to press down the water outlet. The second pressure rod 72 presses down the water outlet on the side of the product to prevent the cut water outlet from splashing onto the top surface of the base plate 1.
[0025] Further improvements, such as Figure 1 and Figure 2As shown, an elastic block 71 is provided at the bottom end of the first pressure rod 70. The elastic block 71 prevents the first pressure rod 70 from damaging the product, thereby avoiding defects when the product is cut. The elastic block 71 is a cylindrical rubber block.
[0026] Further improvements, such as Figure 1 and Figure 2 As shown, the base plate 1 is equipped with multiple positioning blocks 8 for positioning products at the incoming material positioning station. Each positioning block 8 has a chamfer 80 for guiding the incoming material. There are eight positioning blocks 8, which form a rectangular incoming material positioning station. Two positioning blocks 8 are arranged on each side of the incoming material positioning station. The chamfer 80 guides the product into the incoming material positioning station, and the positioning blocks 8 position the product to prevent it from moving horizontally when the sprue is cut.
[0027] Further improvements, such as Figure 1 and Figure 3 As shown, the support 2 is provided with a storage box 9 covering the bottom ends of multiple first bottom plate through holes 10 and multiple second bottom plate through holes 11. A funnel 90 communicating with the storage box 9 is provided on the bottom surface of the storage box 9. The funnel 90 is a funnel 90 with an opening and closing door at the discharge port. Preferably, the storage box 9 and the funnel 90 are integrally formed. The cut-off water nozzles are collected through the storage box 9 to facilitate the recycling of the water nozzles. The water nozzles in the storage box 9 are taken out through the opening and closing door of the funnel 90.
[0028] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A water inlet cutting device, comprising a base plate and a support bracket for supporting the base plate, characterized in that, The top surface of the base plate is provided with a material positioning station for positioning the product; the top surface of the base plate is provided with multiple first base plate through holes and multiple second base plate through holes located directly below the sprue of the product; a first cutter is provided in the first base plate through hole to cut the sprue on the side of the product; a second cutter is provided in the second base plate through hole to cut the sprue on the bottom of the product; a first drive mechanism is provided on the base plate to drive the first cutter to cut the sprue; a second drive mechanism is provided on the base plate to drive the second cutter to cut the sprue; a pressing mechanism is provided on the base plate to press the product; a sensor is provided on the base plate to sense when the product arrives at the material positioning station; the first drive mechanism, the second drive mechanism, and the pressing mechanism are all electrically connected to the sensor.
2. The water-cutting device according to claim 1, characterized in that, The first driving mechanism includes a first cylinder and a mounting plate; the mounting plate is slidably disposed on the bottom surface of the base plate; the mounting plate passes sequentially below a plurality of first base plate through holes; a plurality of first cutters are disposed on the mounting plate; the first cylinder is disposed on the bottom surface of the base plate; the output end of the first cylinder is connected to the mounting plate.
3. The water-cutting device according to claim 2, characterized in that, The second drive mechanism includes a plurality of second cylinders disposed on the bottom surface of the base plate; the output ends of the plurality of second cylinders are all directed directly below the corresponding through holes in the second base plate; a mounting bracket is disposed on the output end of the second cylinder; and the second cutter is disposed on the mounting bracket.
4. The water-cutting device according to claim 1, characterized in that, The pressing mechanism includes multiple corner cylinders; the multiple corner cylinders are respectively located on the base plate near the corresponding first base plate through hole or second base plate through hole; the output end of the corner cylinder is provided with a first pressing rod for pressing down the product.
5. A water-cutting device according to claim 4, characterized in that, A second pressure rod with a downward pressure port is provided on the output end of the corner cylinder near the through hole of the first base plate.
6. A water-cutting device according to claim 4, characterized in that, An elastic block is provided at the bottom end of the first pressure rod.
7. A water-cutting device according to claim 1, characterized in that, The base plate is equipped with multiple positioning blocks for positioning products at the incoming material positioning station; the positioning blocks are provided with chamfers for guiding the incoming material.
8. A water-cutting device according to claim 1, characterized in that, The support is provided with a storage box covering the bottom ends of multiple first bottom plate through holes and multiple second bottom plate through holes; a funnel connected to the storage box is provided on the bottom surface of the storage box; the funnel is a funnel with an opening and closing door at the discharge port.