Casting pouring gate cutting device

Abstract

The utility model belongs to the technical field of metal casting, and particularly relates to a casting sprue cutting device which comprises a supporting seat, a clamping block and a positioning pin, a sliding groove is formed in the supporting seat, a sliding block is arranged at the bottom end of the clamping block, and the sliding block is arranged in the sliding groove in a sliding mode. A V-shaped clamping groove is formed in the upper end of the clamping block, and a long-strip-shaped through groove is formed in the bottom end of the clamping groove. A plurality of threaded holes are formed in the supporting seat, a stud is arranged at the bottom end of the positioning pin, the stud is connected into one of the threaded holes, and the bottom end of the positioning pin tightly presses the bottom wall of the clamping groove; a piston blank is arranged in the clamping groove, a through hole is formed in the piston blank, and the positioning pin is arranged in the through hole of the piston blank in a penetrating mode. The cutting device is simple in structure, capable of quickly clamping and fixing, applicable to cutting of piston blank risers of various sizes, high in universality and capable of further reducing the cutting cost.

Description

Technical Field

[0001] This utility model belongs to the field of metal casting technology, and in particular relates to a casting gate cutting device. Background Technology

[0002] In traditional gravity casting, to obtain castings with acceptable internal quality, it is often necessary to design a suitable gating system and risers to assist in the filling, shaping, and solidification of high-temperature molten metal. These auxiliary gating systems and feeding risers become part of the product blank casting during the casting process, flowing into the next process along with the blank. Before the blank casting flows into the machining process, we need to cut off the gating and riser sections on the blank casting.

[0003] In existing processes for cutting piston risers on raw piston blanks, small-bore gasoline engine pistons are cut using a dedicated riser cutting fixture. However, large-bore diesel engine pistons, due to their larger size, cannot be cut using the same fixture and must be manually clamped. This method requires the operator to hold the piston's skirt with one hand and use a handle with the other to clamp the riser before cutting. This method not only presents a risk of insecure clamping and high safety, but also incurs high cutting costs due to the band saw used. Therefore, we need to design a universal piston riser cutting mechanism for raw piston blanks. Utility Model Content

[0004] In view of the technical problems existing in the background art, the present invention provides a casting gate cutting device.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0006] A casting gate cutting device includes a support base, a clamping block, and a positioning pin. The support base has a sliding groove, and the clamping block has a slider at its bottom end, which slides within the sliding groove. The upper end of the clamping block has a V-shaped clamping groove, and the bottom end of the clamping groove has an elongated through groove. The support base has several threaded holes, and the bottom end of the positioning pin has a stud connected to one of the threaded holes, with the bottom end of the positioning pin pressing against the bottom wall of the clamping groove. A piston blank is placed in the clamping groove, and the piston blank has a through hole; the positioning pin passes through the through hole of the piston blank.

[0007] Optionally, the support base is configured as L-shaped, and a push cylinder is provided on one side of the support base. The piston rod end of the push cylinder is connected to a pressure block, and the pressure block is positioned opposite the positioning pin.

[0008] Optionally, a clamping screw is connected in one of the threaded holes, the clamping screw clamping the bottom wall of the clamping groove.

[0009] Optionally, one end of the clamping block extends to form a mounting block, the mounting block has a guide groove, a motor base is slidably mounted on the mounting block, a slide rail is provided at the bottom of the motor base, and the slide rail is disposed in the guide groove; a drive motor is mounted on the motor base, a transmission box is provided on one side of the drive motor, and a circular saw blade is connected to the output shaft at one end of the transmission box.

[0010] Optionally, the circular saw blade and the end face of the clamping block have a gap.

[0011] Optionally, a connecting plate is provided on one side of the support base, a fixed shaft is provided on the connecting plate, a first connecting rod is slidably sleeved on the fixed shaft, a second connecting rod is hinged to one side of the motor base, one end of the first connecting rod is hinged to the middle position of the second connecting rod, and a handle is provided at the end of the second connecting rod.

[0012] Optionally, the second link is composed of multiple bent segments.

[0013] Optionally, a retaining ring is provided at the end of the fixed shaft.

[0014] Optionally, a clamping nut is threaded onto the locating pin, and the clamping nut clamps the upper surface of the piston blank.

[0015] This utility model has the following advantages and beneficial effects:

[0016] In this invention, the piston blank is positioned using the clamping groove at the upper end of the clamping block. Then, positioning pins are used, connected to corresponding positions according to the length and other dimensions of the piston blank, with the positioning pins passing through the through-hole of the piston blank. The clamping block can then be slidable to adjust the relative position between the clamping block and the piston blank, ensuring that the cutting mechanism can accurately cut the riser of the piston blank. After adjustment, the positioning pins are used to tighten the clamping block. This cutting device has a simple structure, allows for quick clamping and fixing, and is applicable to cutting risers of piston blanks of various sizes, offering high versatility and further reducing cutting costs. Attached Figure Description

[0017] Figure 1 A structural diagram of the casting gate cutting device for clamping piston blanks in a utility model;

[0018] Figure 2 for Figure 1 Front view;

[0019] Figure 3 for Figure 2 Top view;

[0020] Figure 4 This is a structural diagram of the casting gate cutting device in the utility model.

[0021] Figure 5 for Figure 4 Front view;

[0022] Figure 6 for Figure 5 Top view;

[0023] Figure 7 This is a structural diagram of the support base in the utility model;

[0024] Figure 8 This is a structural diagram of the positioning pin in the utility model.

[0025] Figure 9 This is one of the structural diagrams of the clamping block in the utility model;

[0026] Figure 10 This is the second structural diagram of the clamping block in the utility model;

[0027] Figure 11 for Figure 9 Front view.

[0028] Reference numerals: 1-Support base, 11-Through hole, 12-Connecting hole, 13-Slide groove, 14-Threaded hole, 15-Connecting plate, 16-Fixed shaft, 17-Retaining ring, 2-Positioning pin, 21-Stud, 22-Pressure nut, 23-Rotating part, 24-Pressure screw, 3-Clamping block, 31-Clamping groove, 32-Through groove, 33-Slider, 34-Mounting block, 35-Guide groove, 4-Push cylinder, 41-Pressure block, 5-Motor base, 51-Slide rail, 6-Drive motor, 61-Transmission box, 62-Circular saw blade, 7-Second connecting rod, 71-Handle, 8-First connecting rod, 9-Piston blank, 91-Riser. Detailed Implementation

[0029] 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 with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] Example

[0032] like Figures 1-11 As shown, a casting gate cutting device includes components such as a support base 1, a clamping block 3, and a positioning pin 2.

[0033] like Figures 1-11 As shown, the support base 1 has two sliding grooves 13. The bottom end of the clamping block 3 has two sliders 33, which slide within the sliding grooves 13. The clamping block 3 slides against the upper end of the support base 1. The upper end of the clamping block 3 has a V-shaped clamping groove 31, and the bottom end of the clamping groove 31 has a long, narrow through groove 32 located on the bottom side of the clamping block 3, with its upper end communicating with the clamping groove 31. The support base 1 has several threaded holes 14, which are located between the two sliding grooves 13 and are evenly distributed along the direction of the sliding grooves 13. The bottom end of the positioning pin 2 has a stud 21 connected to one of the threaded holes 14, and the bottom end of the positioning pin 2 presses against the bottom wall of the clamping groove 31 (e.g., ...). Figure 5 As shown), the positioning pin 2 can be tightened to press the clamping block 3. A piston blank 9 is provided in the clamping groove 31. One side of the piston blank 9 has a riser 91, which needs to be cut. A through hole is provided on the piston blank 9, and the positioning pin 2 passes through the through hole of the piston blank 9.

[0034] Reference Figure 1 and Figure 7 When dealing with piston blanks 9 of different sizes, the piston blank 9 can first be placed in the clamping groove 31 of the clamping block 3. Then, the positioning pin 2 is passed through the through hole of the piston blank 9 and connected to the appropriate threaded hole 14. The clamping block 3 can then be slid, and the positioning pin 2 is fixed, so the piston blank 9 is also fixed. The relative position of the piston blank 9 and the clamping block 3 can be adjusted to ensure that the riser 91 extends to the outside of the clamping block 3, which facilitates the subsequent cutting of the riser 91. By adjusting the relative position of the clamping block 3 and the piston blank 9, the cutting mechanism can be aligned with the riser 91 of the piston blank 9 for cutting. After adjustment, the positioning pin 2 is used to press the clamping block 3. This cutting device has a simple structure, can be quickly clamped and fixed, and can be used to cut the riser 91 of piston blanks 9 of various sizes. It has high versatility and further reduces cutting costs.

[0035] Furthermore, the support base 1 is L-shaped, and a push cylinder 4 is provided on one side of the support base 1. Specifically, the support base 1 has a through hole 11, and connecting holes 12 are evenly distributed around the through hole 11. The piston rod of the push cylinder 4 passes through the through hole 11 and is connected to a pressure block 41. The push cylinder 4 is connected to the connecting holes 12 by screws or the like. The pressure block 41 is connected to the end of the piston rod of the push cylinder 4, and the pressure block 41 is positioned opposite the positioning pin 2. By extending the push cylinder 4, the pressure block 41 can be used to press the side of the piston blank 9, further enhancing the reliability of clamping.

[0036] Furthermore, a clamping screw 24 is connected to one of the threaded holes 14, and the clamping screw 24 clamps the bottom wall of the clamping groove 31. In this way, the clamping block 3 is further fixed by the clamping screw 24, increasing the reliability of the clamping block 3.

[0037] Furthermore, a clamping nut 22 is threaded onto the positioning pin 2, and a rotating part 23 is provided at the upper end of the positioning pin 2 to facilitate rotation. The clamping nut 22 clamps the upper surface of the piston blank 9, further fixing the piston blank 9 and increasing the reliability of the clamping block 3.

[0038] like Figures 1-11 As shown, in this utility model, a mounting block 34 extends from one end of the clamping block 3. Two guide grooves 35 are provided on the mounting block 34. A motor base 5 is slidably mounted on the mounting block 34. Two slide rails 51 are provided at the bottom of the motor base 5, and the slide rails 51 are disposed in the guide grooves 35. A drive motor 6 is mounted on the motor base 5. A transmission box 61 is provided on one side of the drive motor 6. A circular saw blade 62 is connected to the output shaft at one end of the transmission box 61. In this utility model, a belt drive can be used. That is, a belt and pulley transmission mechanism is provided inside the transmission box 61. The drive motor 6 drives one pulley to rotate, and then the belt drives the other pulley to rotate. The two pulleys are mounted inside the transmission box 61 via shafts, one of which is connected to the saw blade, ultimately driving the saw blade to rotate and achieve the cutting operation.

[0039] Reference Figure 3 and Figure 6 In this invention, the circular saw blade 62 and the end face of the clamping block 3 have a gap to ensure sufficient safe cutting clearance. During cutting, the sliding motor base 5 drives the circular saw blade 62 to move laterally, which allows the cutting operation to be performed on the exposed riser 91 on the outside of the clamping block 3.

[0040] like Figures 1-11As shown, in this utility model, a connecting plate 15 is provided on one side of the support base 1, and a fixed shaft 16 is provided on the connecting plate 15. A first connecting rod 8 is slidably sleeved on the fixed shaft 16. A second connecting rod 7 is hinged to one side of the motor base 5. One end of the first connecting rod 8 is hinged to the middle position of the second connecting rod 7, and a handle 71 is provided at the end of the second connecting rod 7. Through the design of the linkage mechanism, the motor base 5 can be moved by pressing the handle 71, thereby realizing the lateral cutting of the saw blade.

[0041] Furthermore, the second link 7 is composed of multiple bent segments to reduce the height of the handle 71 position on the second link 7.

[0042] Furthermore, a retaining ring 17 is provided at the end of the fixed shaft 16. During the sliding adjustment of the clamping block 3, the motor base 5 also slides, synchronously driving the first connecting rod 8 and the second connecting rod 7 to slide. The first connecting rod 8 slides on the fixed shaft 16, while the retaining ring 17 can play a limiting role to prevent the first connecting rod 8 from disengaging from the fixed shaft 16.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A casting gate cutting device, characterized in that: Includes support base, clamping block and positioning pin, The support base is provided with a sliding groove, and the bottom end of the clamping block is provided with a slider, which is slidably disposed in the sliding groove. The upper end of the clamping block is provided with a V-shaped clamping groove, and the bottom end of the clamping groove is provided with a long strip-shaped through groove. The support base is provided with several threaded holes, and the bottom end of the positioning pin is provided with a stud. The stud is connected to one of the threaded holes, and the bottom end of the positioning pin presses against the bottom wall of the clamping groove. A piston blank is provided in the clamping groove, and a through hole is provided on the piston blank. The positioning pin passes through the through hole of the piston blank.

2. The casting gate cutting device according to claim 1, characterized in that: The support base is L-shaped, and a push cylinder is provided on one side of the support base. The piston rod of the push cylinder is connected to a pressure block, which is positioned opposite the positioning pin.

3. The casting gate cutting device according to claim 1, characterized in that: A clamping screw is connected to one of the threaded holes, and the clamping screw clamps the bottom wall of the clamping groove.

4. The casting gate cutting device according to claim 1, characterized in that: One end of the clamping block extends to a mounting block, which has a guide groove. A motor base is slidably mounted on the mounting block, and a slide rail is provided at the bottom of the motor base, which is located in the guide groove. A drive motor is mounted on the motor base, and a transmission box is provided on one side of the drive motor. A circular saw blade is connected to the output shaft at one end of the transmission box.

5. The casting gate cutting device according to claim 4, characterized in that: The circular saw blade has a gap with the end face of the clamping block.

6. The casting gate cutting device according to claim 4, characterized in that: A connecting plate is provided on one side of the support base, and a fixed shaft is provided on the connecting plate. A first connecting rod is slidably sleeved on the fixed shaft. A second connecting rod is hinged to one side of the motor base. One end of the first connecting rod is hinged to the middle position of the second connecting rod, and a handle is provided at the end of the second connecting rod.

7. The casting gate cutting device according to claim 6, characterized in that: The second link is composed of multiple bent segments.

8. The casting gate cutting device according to claim 7, characterized in that: A retaining ring is provided at the end of the fixed shaft.

9. The casting gate cutting device according to claim 1, characterized in that: A clamping nut is threaded onto the locating pin, and the clamping nut clamps the upper surface of the piston blank.

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