An arc-shaped gate tooling

Abstract

This invention discloses an arc-shaped gate cutting fixture, belonging to the field of mold equipment. It includes several gate cutting heads, each comprising a first cutting segment and a second cutting segment. The diameter of the first cutting segment is smaller than that of the second cutting segment, and the first and second cutting segments are connected by an arc-shaped transition. The second cutting segment can remove the main gate portion, while the first cutting segment cuts at the edge of the gate on the product, preventing any residual gate from remaining on the top of the product. The arc-shaped transition area between the first and second cutting segments can then be used to round the gate on the product, ensuring that the shape of the gate is consistent with the normal part of the product. This solution can quickly remove the arc-shaped gate from the product, is highly practical, and ensures high product quality after gate removal.

Description

Technical Field

[0001] This invention relates to a gate fixture, and more specifically, to an arc-shaped shear gate fixture. Background Technology

[0002] Products formed by molds often have curved structures, which are often accompanied by curved gates. The common way to deal with curved gates is to manually cut the gate. However, manual cutting will result in unevenness of the gate, and it is even more difficult to manually cut parts with rounded corners, which is time-consuming and labor-intensive.

[0003] For example, Chinese Patent Publication No. CN205043138U, published on February 24, 2016, entitled "A Gating Fixture for Curved Workpieces," discloses a gating fixture for curved workpieces, including a clamping and positioning assembly, a clamping sleeve assembly, and a shearing assembly. The lower side of the workpiece is supported and positioned by the clamping and positioning assembly, and the upper side of the workpiece is clamped by the clamping and positioning assembly. The gating of the workpiece is sheared by the shearing assembly. However, this solution cannot achieve the shearing of curved R-shaped gatings; it can only cut off the gating and cannot complete the processing of rounded or R-shaped corner portions. Summary of the Invention

[0004] This invention overcomes the problem that the gate with a radius (R) cannot be effectively cut off and the radius (R) cannot be restored. It provides a curved gate cutting tool that can cut off the gate while restoring its radius (R) by sliding a specially designed gate cutter head on its base. It is convenient and simple to use and ensures that qualified products are cut out.

[0005] To address the aforementioned technical issues, this invention employs the following solution: an arc-shaped gate cutting tool, comprising a plurality of gate cutting heads, each comprising a first cutting segment and a second cutting segment. The diameter of the first cutting segment is smaller than that of the second cutting segment, and the first cutting segment and the second cutting segment are connected by an arc-shaped transition. The second cutting segment can cut off the main gate portion, while the first cutting segment cuts off the edge of the product gate to prevent residual gate from remaining on the top of the product. Then, the arc-shaped transition area between the first and second cutting segments can be used to round the gate on the product, ensuring that the shape of the gate is consistent with the normal part of the product.

[0006] Preferably, the system also includes a base with a placement groove. The gate cutter head is slidably connected around the placement groove via a drive device for driving the gate cutter head. The base also has a sliding groove arranged according to the shape of the placement groove. The drive device slides within the sliding groove, thereby driving the gate cutter head to move along the edge of the placement groove to complete the gate shearing operation.

[0007] Preferably, the gate cutter head on the drive device is slidably connected towards the placement groove, and a push rod for pushing the drive device is fixed on the drive device. The drive device includes a gate cutter head base, on which the gate cutter head can move radially along the placement groove, allowing the gate cutter head to extend into the placement groove to reach the gate position for gate removal. After removing the gate, the gate cutter head base is moved in the opposite direction to retract the gate cutter head. The push rod on the drive device is used to push the drive device to move within the sliding groove on the base, facilitating operation by the operator.

[0008] Preferably, the placement slot is further provided with an opening, and a clamping plate is rotatably connected to the base at the opening. The clamping plate has a snap-fit ​​hole on the side facing the placement slot, and a clamping block is snapped into the snap-fit ​​hole. The opening on the placement slot is used for the entry and exit of the product, the clamping plate is used to seal the opening, and together with the clamping block, the product is clamped in the placement slot horizontally.

[0009] Preferably, a wear-resistant plate is also provided between the top clamping plate and the base. A step is provided at the base where the top clamping plate is located, and the top clamping plate is rotatably connected to the lower part of the step. A wear-resistant plate is provided on the step and below the top clamping plate. The step serves to limit the movement of the top clamping plate, preventing it from rotating into the placement groove. The wear-resistant plate reduces wear on the bottom of the top clamping plate and exerts an upward force on the bottom of the top clamping plate, applying a pre-tightening force to prevent the top clamping plate from loosening or shaking on its own.

[0010] Preferably, a drive device for driving the gate cutter head is slidably connected to the top plate, and the gate cutter head on the drive device is arranged perpendicularly to the plane of the placement slot. The gate cutter head on the top plate is used to cut off the gate along the direction of the top plate. Since the top plate is rotatably connected to the base and the rotation direction is towards the opening direction of the placement slot, the gate at the top plate is cut vertically. The drive device is arranged perpendicularly to the surface of the placement slot, so that the gate cutter head is also perpendicular to the surface of the placement slot. At this time, the function of the gate cutter head at this location is: the first cutting segment is used to cut off the main part of the gate, the end face of the second cutting segment is used to cut off the residual gate at the top of the product, and the transition area between the first cutting segment and the second cutting segment is used for R-angle treatment so that the shape of the gate after cutting is consistent with the product.

[0011] Preferably, a clamping cover is rotatably connected to the opposite side of the opening. The clamping cover has several mounting holes, and several clamping rods are installed in the mounting holes facing the placement groove. Rotating the clamping cover can press the clamping rods against the surface of the product. The mounting holes are used to install the clamping rods, and are mainly distributed on the edge of the clamping cover to press the edge of the product. The number and position of the clamping rods can be determined according to the actual shape and position of the product. Additional mounting holes can improve practicality.

[0012] Preferably, the base and the top cover are also provided with lifting lugs, and the top cover is also provided with a lifting rod near the opening. The lifting lugs are mainly used to lift the entire fixture, and the lifting rod is the force point for rotating the top cover, facilitating the rotation of the top cover.

[0013] Preferably, the opening of the placement slot is provided with a first latch for locking the top cover and a second latch for locking the top plate. The first latch is used to lock the top cover, ensuring that the top clamping rod on the top cover can hold the product vertically and fix it in place; the second latch is used to lock the top plate, ensuring that the top clamping block on the top plate can hold the product horizontally. The combination of the two can completely fix the product in place, preventing damage to the gate due to changes in the product's position when the gate is cut off.

[0014] Preferably, the second cutting section is also provided with several arc-shaped grooves of different sizes. These arc-shaped grooves are used for different types of radius (R) corner treatments, and different products have different R-angle configurations. Providing several arc-shaped grooves on the second cutting section can accommodate more product types, thus increasing its practicality.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) it can perform R-angle treatment after the gate is cut off; (2) it can quickly cut off the arc gate of the product; (3) it has high practicality, and after the gate is cut off, the quality of the product can be guaranteed to be high; (4) it has a simple structure, is easy to use, and has a lower cost. Attached Figure Description

[0016] Figure 1 This is an isometric view of the present invention.

[0017] Figure 2 This is a schematic diagram showing the removal of the top cover and the opening of the top plate of the present invention.

[0018] Figure 3 for Figure 2 An enlarged diagram of A in the diagram.

[0019] Figure 4 This is a schematic diagram of the present invention when both the top cover and the top plate are open.

[0020] Figure 5 This is a schematic diagram of Embodiment 2 of the present invention.

[0021] In the diagram: 1. Sprue head, 2. First sprue section, 3. Second sprue section, 4. Base, 5. Drive unit, 6. Placement slot, 7. Push rod, 8. Opening, 9. Top plate, 10. Snap-fit ​​hole, 11. Top block, 12. Wear-resistant plate, 13. Top cover, 14. Mounting hole, 15. Top rod, 16. Lifting lug, 17. Lifting rod, 18. First lock, 19. Second lock, 20. Product, 21. Sprue, 22. Slider, 23. Slide rail, 24. Limit screw, 25. Limit screw hole, 26. R-angle, 27. Arc-shaped sprue groove, 28. Fixing plate. Detailed Implementation

[0022] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0023] Example 1: As Figures 1 to 4 The arc-shaped gate shear fixture shown includes a base 4 with a placement groove 6 in the center for placing products. The placement groove 6 is a combination of a rectangle and a semicircle. An opening 8 is located at the end of the rectangle, away from the semicircle. A rotating frame for a top cover 13 is located on one side of the semicircle. The top cover 13 is rotatably connected to the rotating frame. The rotation direction of the top cover 13 is towards or away from the surface of the placement groove 6. The top cover 13 has several perforated holes, which reduce the overall weight of the top cover 13 and save materials. The top cover 13 also has several mounting holes 14, mainly distributed at the edge of the top cover 13. Several clamping rods 15 are provided on the side of the tight cover 13 near the placement groove 6. The clamping rods 15 are symmetrically arranged with respect to the position of the tight cover 13, which is beneficial to make the product 20 evenly stressed when the clamping rods 15 press against the product 20. The number and position of the clamping rods 15 can be determined according to the actual shape and position of the product 20. The extra mounting holes 14 can make it more practical. A rubber pad is also provided at the end of the clamping rod 15 that presses against the product 20. The rubber pad wraps around the pressure side of the clamping rod 15. On the one hand, it can apply horizontal friction force to the product 20 to prevent the position of the product 20 from changing. On the other hand, it can prevent the end of the clamping rod 15 from scratching or damaging the surface of the product 20. Meanwhile, a lifting rod 17 is provided near the opening 8 of the top cover 13. There is one lifting rod 17 on each side of the top cover 13. The lifting rod 17 is mainly used to provide a force point for the rotation of the top cover 13, so as to facilitate the rotation of the top cover 13. The sides of the connection between the two lifting rods 17 and the top cover 13 are also provided with locking blocks for locking with the first lock 18. The first lock 18 is set on the two support rods that are located at the opening 8 of the placement groove 6 and abut against the top cover 13. The support rods can also ensure that the top cover 13 is in a horizontal position and will not rotate excessively and damage the product 20.

[0024] like Figures 1 to 4As shown, the base 4 is equipped with several driving devices 5, with a total of 5 driving devices 5 on the base. Among them, there is one driving device 5 on each side of the rectangular side of the placement groove 6 near the opening 8, and the driving device 5 at this location mainly moves in a straight line along the placement groove 6; there is also one driving device 5 at the junction of the rectangular and semi-circular positions of the placement groove 6, and the driving device 5 at this location is mainly used for the transition cutting between the straight line and the arc; there is also one driving device 5 in the middle of the semi-circle and in the middle of the rotating frame of the top cover 13, and the driving device 5 at this location mainly moves along the semi-circular part to cut off the gate 21 on this arc. The driving device 5 includes a sprue head base. The sprue head 1 can move radially along the placement groove 6 on the sprue head base. When the sprue head 1 moves to a fixed position, it can also be fixed to prevent the sprue head 1 from continuing to move radially along the placement groove 6 and damaging the side wall of the product 20. At the same time, the base 4 is also provided with several sliding grooves. The sliding grooves are arranged along the shape of the placement groove 6, and the bottom of the sprue head base can slide in the sliding grooves, thereby driving the sprue head 1 to move along the edge of the placement groove 6. The gate cutter head 1 mainly includes a first cutting section 2 and a second cutting section 3. The second cutting section 3 can cut off the main gate 21 part, while the first cutting section 2 cuts off the edge of the gate 21 at the top of the product 20 to prevent any residual gate 21 from remaining on the top of the product 20. Then, through the arc transition area between the first cutting section 2 and the second cutting section 3, the gate 21 on the product can be processed with an R-angle 26, that is, the R-angle 26 can be retained or the R-angle 26 shape can be cut out, so that the shape of the gate 21 is consistent with the normal part of the product 20.

[0025] A step is provided at the base 4 where the opening 8 of the placement slot 6 is located. A top plate 9 is rotatably connected to the base 4 at the lower part of the step. The rotation direction of the top plate 9 is towards the placement slot 6. The higher part of the step can limit the top plate 9 to prevent it from rotating into the placement slot 6. The top plate 9 has several locking holes 10 on the side facing the placement slot 6. The locking holes 10 are engaged with top blocks 11. The top plate 9 and the top blocks 11 together limit the product 20 in the placement slot 6. The top blocks 11 can select the locking holes 10 according to the position of the product 20 to engage the product 20. The clamping block 11 includes a U-shaped buckle. One side of the U-shaped buckle is used to clamp the clamping hole 10, and a top block is fixed on the other side. The top block is wedge-shaped and has a cover plate on the wedge corner. When the clamping plate 9 rotates to be in contact with the high point of the step, the clamping plate 9 and the clamping block 11 together press against the product 20. In fact, the cover plate at the wedge corner of the clamping block 11 presses against the edge of the product 20, thereby fixing the product 20 in the horizontal direction. This ensures that the position of the product 20 remains unchanged when the gate 21 is cut off, improving the efficiency and quality of gate 21 removal.

[0026] A wear-resistant plate 12 is provided on the upper surface of the lower part of the step and below the top clamping plate 9. The wear-resistant plate 12 can reduce the wear on the bottom of the top clamping plate 9 and exert an upward force on the bottom of the top clamping plate 9, which can apply a pre-tightening force to the top clamping plate 9 to prevent it from loosening or shaking on its own. A locking block for locking with the second lock 19 is also provided at the end of the top clamping plate 9 away from its rotation axis. The second lock 19 is located on the side of the base 4 at the opening 8 of the placement slot 6, and is located at the end away from the rotation axis of the top clamping plate 9. The base 4 and the top clamping cover 13 are also provided with lifting lugs 16, which are mainly used to lift the entire tooling to facilitate the movement of the entire tooling.

[0027] It is worth noting that a driving device 5 is also provided on the top plate 9. The driving device 5 is used to cut off the gate 21 on the product 20 at the opening 8 of the placement slot 6. Since the top plate 9 is rotatably connected to the base 4 and the rotation direction is towards the opening 8 of the placement slot 6, the gate 21 at the top plate 9 is cut vertically. The driving device 5 is arranged perpendicular to the surface of the placement slot 6, so that the gate cutter head 1 is also perpendicular to the surface of the placement slot 6. At this time, the gate cutter head 1 at this location has the following functions: the first cutting segment 2 is used to cut off the main part of the gate 21, the end face of the second cutting segment 3 is used to cut off the residual gate 21 at the top of the product 20, and the transition area between the first cutting segment 2 and the second cutting segment 3 is used for R-angle 26 treatment so that the shape of the gate 21 after cutting is consistent with the product.

[0028] Meanwhile, the top plate 9 is also equipped with a slide rail 23, and the slide rail 23 is arranged with several limiting hole screws 25, such as Figure 2 or Figure 4As shown, a limiting screw 24 is provided at the outermost end of the slide rail 23 away from the rotating shaft of the top clamping plate 9. A slider 22 is slidably connected on the slide rail 23. A fixing plate 28 is also fixed on the top of the slider 22. The fixing plate 28 has an extension on the outside of the slider 22. A vertically placed driving device 5 for driving the sprue cutter head is fixedly connected to the extension. The limiting screw 24 is used to limit the drive device 5 on the top plate 9, preventing it from moving beyond the effective gate 21 cutting range. The limiting screw hole 25 is used to adjust the position of the limiting screw 24. The position of the limiting screw 24 is determined according to the position of the gate 21 on the product 20, which helps to limit the movement of the drive device 5 within the minimum effective range. The slider 22 moves on the slide rail 23, which can drive the drive device 5 on the top plate 9 to move together. The extension of the fixing plate 28 on the slider 22 is used to fix the drive device 5. The position of the drive device 5 at this point can be adjusted in the vertical direction and locked after the position is adjusted. The connection between the fixing plate 28 and the slider 22 is connected by screws, and this connection can be used as a force application point. The operator only needs to apply a force along the slide rail 23 at this point to push the drive device 5 to move, which is simple and convenient to operate. A push rod 7 is provided at the bottom rear of the drive device 5 on the base 4. The operator can use the push rod 7 to move the drive device 5 to complete the gate 21 cutting work.

[0029] Example 2: Figure 5 The arc-shaped gate shearing fixture shown differs from Embodiment 1 only in that the second section 3 of the gate cutter head 1 is further provided with several arc-shaped grooves 27, and the size of each groove 27 is different. The groove size is mainly set according to the R-angle 26 of several commonly used products 20. This solution can be applied to more situations and is suitable for cutting gates 21 on different R-angles 26 of different products 20. When dealing with different products 20, there is no need to temporarily change the cutter. The drive device 5 can be moved radially along the placement groove 6 to change the size of the arc-shaped grooves 27 placed on the product 20 to complete the work of cutting the gate 21.

[0030] Furthermore, this solution has another advantage: when the mold is being formed, if some of the gate 21 remains on the inner wall of the product 20 during cooling, the curved sprue 27 can remove the remaining gate 21 on the inner side of the product 20, while also ensuring that the radius 26 is preserved. This solution is simple in structure, easy to use, low in cost, and greatly improves production efficiency.

Claims

1. An arc-shaped shear gate tool, characterized by, The application relates to a sprue cutting device, which comprises a plurality of sprue cutting heads and a base, the base is provided with a placing groove and a plurality of driving devices, the driving device comprises a sprue cutting head base, the sprue cutting head can move along the radial direction of the placing groove on the sprue cutting head base; the base is further provided with a sliding groove arranged along the shape of the placing groove, and the sprue cutting head base slides in the sliding groove; the sprue cutting head comprises a first cutting section and a second cutting section, the diameter of the first cutting section is smaller than that of the second cutting section, and the first cutting section and the second cutting section are connected in an arc transition mode, the cutting of the sprue is completed by pushing the driving device; the placing groove is provided with an opening, the base at the opening is provided with a step, a jacking plate is rotationally connected to the lower part of the step, a driving device for driving the sprue cutting head and capable of being adjusted in the vertical direction is slidably connected to the jacking plate, and the sprue cutting head on the driving device is arranged perpendicularly to the plane of the placing groove; a jacking cover is rotationally connected to the side opposite to the opening, the jacking cover is provided with a plurality of mounting holes, and a plurality of jacking rods are mounted on the mounting holes and face the placing groove.

2. The arc-shaped gate cutter of claim 1, wherein, The shape of the placing groove is a splicing of a rectangle and a semicircle, and the sprue cutting head is slidably connected around the placing groove by the driving device for driving the sprue cutting head.

3. A gate shaper according to claim 2, wherein, The sprue cutting head on the driving device is slidably connected towards the placing groove, and a push rod for pushing the driving device is fixed on the driving device.

4. The arc-shaped gate cutter of claim 2 wherein, The opening is arranged at the rectangular end of the placing groove and away from the semicircular position, the jacking plate is provided with a clamping hole on the side facing the placing groove, the clamping hole is clamped with a jacking block, the jacking block is fixed with a jacking piece, the jacking piece is in the shape of a wedge strip, and the wedge angle is provided with a cover piece for pressing the edge of the product.

5. A gate shaper according to claim 4, wherein the gate shaper is arcuate in shape. A wear-resistant plate is further arranged between the jacking plate and the base.

6. A gate shaper according to claim 4, wherein, A sliding rail is further arranged on the jacking plate, a plurality of limiting screw holes are arranged on the sliding rail, and a limiting screw is arranged at the outermost end of the sliding rail away from the rotating shaft of the jacking plate.

7. The arc-shaped gate cutter of claim 1 wherein, A plurality of hollow holes are arranged on the jacking cover.

8. A gate shaper according to claim 7, wherein, Lifting rods are further arranged on the jacking cover close to the opening.

9. A gate shaper according to claim 7 or 8, wherein the gate shaper is arcuate in shape. The opening of the placing groove is provided with a first lock catch for locking the jacking cover and a second lock catch for locking the jacking plate, the first lock catch is arranged on the two supporting rods abutting against the jacking cover at the opening of the placing groove, so as to ensure that the jacking plate is covered in the horizontal position.

10. The arc-shaped cut gate tool of claim 1, wherein, A plurality of arc-shaped cutting grooves are further arranged on the second cutting section, and the arc-shaped cutting grooves are different in size.

Images