False core detection device for supercharger turbine wax pattern production

Abstract

The utility model relates to a kind of false core detection device for supercharger turbine wax mould production, the mould including upper mould and lower mould used in wax mould production, lower mould is provided with lower cavity, positioning sleeve for placing false core is equipped in lower cavity middle part, when false core is placed on positioning sleeve, the jack plug on false core is covered on positioning sleeve;Detection device includes: mounting bracket, is installed in the side of lower mould;Ranging sensor, install on mounting bracket, the emission path of the detection signal of ranging sensor passes through the upper opening of lower cavity, while emission path passes through the space occupied when false core is placed on positioning sleeve;Wherein, when false core is placed on positioning sleeve or false core is not placed on positioning sleeve, the distance signal output by ranging sensor is different, for judging whether false core is placed in lower cavity, so as not to carry out mould closing and wax pressing operation when not placing false core, realize the stable production of wax mould, improve the qualified rate of casting.

Description

Technical Field

[0001] This utility model relates to the field of wax mold processing technology, and in particular to a dummy core detection device for the production of turbocharger turbine wax molds. Background Technology

[0002] Existing turbocharger turbine wax mold molding die structures typically include a lower die comprising multiple radially opening and closing moving modules, and an upper die that opens and closes relative to the lower die. After the upper and lower dies are closed, they form a cavity for molding the wax mold. In order to facilitate precise molding of the wax mold, a dummy core needs to be placed in the cavity. The dummy core is usually made of wax.

[0003] The existing wax mold production process is as follows: mold opening - placing the dummy core - mold closing - wax pressing - wax pressing end - mold opening - wax mold removal. The "placing the dummy core" step is easily overlooked. When the dummy core is missing from the wax mold, the size of the wax mold will be affected, ultimately leading to the defective casting. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a dummy core detection device for the production of turbocharger turbine wax molds, thereby eliminating the need for mold closing and wax pressing operations when no dummy core is placed, achieving stable wax mold production and improving the qualification rate of castings.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A device for detecting dummy cores in the production of wax molds for turbochargers. The mold used in the production of wax molds includes an upper mold and a lower mold. The lower mold has a lower cavity, and a positioning sleeve for placing the dummy core is provided in the middle of the lower cavity. When the dummy core is placed on the positioning sleeve, the insertion hole on the dummy core is fitted onto the positioning sleeve.

[0007] The detection device includes:

[0008] The mounting bracket is installed on one side of the lower mold;

[0009] A ranging sensor is mounted on the mounting bracket. The transmission path of the detection signal of the ranging sensor passes through the upper opening of the lower cavity, and at the same time, the transmission path passes through the space occupied by the dummy core when it is placed on the positioning sleeve.

[0010] When the dummy core is placed on the positioning sleeve or not, the distance signal output by the distance measuring sensor is different, which is used to determine whether the dummy core is placed in the lower cavity.

[0011] As a further improvement to the above technical solution:

[0012] The ranging sensor is a laser ranging sensor.

[0013] The ranging sensor is slidably mounted on the mounting bracket for adjusting the vertical height of the ranging sensor.

[0014] The mounting bracket is fixedly equipped with a guide rod and a servo motor. A slider is slidably mounted on the guide rod. The slider is fixedly connected to the ranging sensor. A lead screw is rotatably mounted on the mounting bracket. The lead screw passes through the through hole of the slider and is drivenly connected to the slider. The end of the lead screw is drivenly connected to the servo motor.

[0015] The launch path intersects the central axis of the positioning sleeve, and when the dummy core is placed on the positioning sleeve, the launch path passes through the upper surface of the dummy core;

[0016] The detection device further includes a sensor bracket, which includes a pitch angle adjustment plate. The pitch angle adjustment plate is fixedly mounted on the slider. The pitch angle adjustment plate has a circular hole and a first arc-shaped hole. The circular hole is located at the center of the first arc-shaped hole. First fasteners are respectively inserted into the circular hole and the first arc-shaped hole. The first fasteners fix the ranging sensor to the pitch angle adjustment plate. Adjusting the position of the first fastener in the first arc-shaped hole adjusts the angle between the transmission path and the central axis of the positioning sleeve.

[0017] The sensor bracket also includes a base plate, which is fixedly connected to the slider. A second fastener is provided on the base plate, and a second arc-shaped hole is provided on the pitch angle adjustment plate. The second fastener passes through the second arc-shaped hole to fix the base plate and the pitch angle adjustment plate. Adjusting the position of the second fastener in the second arc-shaped hole adjusts the horizontal orientation of the transmission path so that the transmission path intersects with the central axis.

[0018] The detection device also includes an extension arm and a rotating base;

[0019] One end of the extension arm is fixedly connected to the slider, and the other end of the extension arm is fixedly mounted with the ranging sensor;

[0020] The rotating base is installed on one side of the lower mold, and the mounting bracket is fixedly installed on the rotating part of the rotating base. The rotating base is used to drive the extension arm to rotate, so that the extension arm switches between a position that avoids the movement of the upper mold and a measurement position.

[0021] When the extension arm is in the measurement position, the emission path is parallel to the central axis of the positioning sleeve, and when the dummy core is placed on the positioning sleeve, the emission path passes through the upper surface of the dummy core.

[0022] The rotating base is a rotary cylinder.

[0023] The number of ranging sensors is multiple, and the multiple ranging sensors are distributed along the extension direction of the upper surface of the dummy core.

[0024] The beneficial effects of this utility model are as follows:

[0025] This utility model has a compact and reasonable structure and is easy to operate. By setting a mounting bracket with a distance sensor on one side of the lower mold, the distance sensor points to the dummy core. The change in the distance signal of the distance sensor before and after the dummy core is placed determines whether the dummy core needs to be placed. When the dummy core is not placed, the mold closing and wax pressing operations are not performed, thereby achieving stable production of wax molds and improving the qualification rate of castings.

[0026] This utility model also has the following advantages:

[0027] (1) By sliding the distance sensor onto the mounting bracket, it is easy to adjust the height of the distance sensor after the mold is changed at the wax pressing station, so that the transmission path of the detection signal of the distance sensor is adapted to the current mold.

[0028] (2) By driving the lead screw to rotate through the servo motor and controlling the slider to rise and fall, the height of the distance sensor corresponding to different molds can be precisely controlled and recorded. Thus, after changing the mold, the detection device can quickly adjust the height position of the distance sensor.

[0029] (3) A distance sensor is installed by means of a pitch angle adjustment plate to adjust the installation angle of the distance sensor so that the distance sensor can receive reflected signals when it detects the distance to the upper surface of the dummy core and the distance to the side wall of the positioning sleeve. When the mold is changed, only the installation height of the distance sensor needs to be adjusted, which facilitates the quick adaptation of the same distance sensor to multiple different molds. The distance sensor is located on the side of the upper mold and the lower mold and does not affect the opening and closing of the mold.

[0030] (4) The distance sensor is fixed by the extension arm, and the mounting bracket is driven to rotate by the rotating seat, so that the extension arm swings around the rotation center, so that the distance sensor swings from the side of the lower mold to the top of the lower cavity and the dummy core, and performs distance detection from the top of the dummy core, thereby improving the applicability of the detection device. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the detection device according to an embodiment of the present invention (before placing the dummy core).

[0032] Figure 2 This is a schematic diagram of the detection device according to an embodiment of the present invention (after placing the dummy core).

[0033] Figure 3 This is a schematic diagram of the mounting bracket and sensor support of this utility model.

[0034] Figure 4 This is a schematic diagram of the detection device according to another embodiment of the present invention (after placing the dummy core).

[0035] Figure 5 This is a top view of a detection device according to another embodiment of the present invention.

[0036] in:

[0037] 1. Place the mold;

[0038] 2. False core; 21. Insertion hole; 22. Top surface;

[0039] 3. Mounting bracket; 31. Guide rod; 32. Lead screw; 33. Slider; 34. Servo motor;

[0040] 4. Distance sensor; 41. Sensor bracket; 411. Pitch angle adjustment plate; 413. First arc-shaped hole; 414. Base plate; 415. Second arc-shaped hole; 42. Extension arm;

[0041] 5. Lower mold; 51. Positioning sleeve;

[0042] 6. Rotary seat. Detailed Implementation

[0043] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0044] Example 1:

[0045] like Figures 1-5 As shown in the figure, the dummy core detection device for producing turbocharger turbine wax molds in this embodiment includes an upper mold 1 and a lower mold 5. The lower mold 5 is provided with a lower cavity, and a positioning sleeve 51 for placing the dummy core 2 is provided in the middle of the lower cavity. When the dummy core 2 is placed on the positioning sleeve 51, the insertion hole 21 on the dummy core 2 is fitted onto the positioning sleeve 51.

[0046] The detection device includes a mounting bracket 3 and a ranging sensor 4.

[0047] Mounting bracket 3 is installed on one side of the lower mold 5;

[0048] The ranging sensor 4 is mounted on the mounting bracket 3. The transmission path of the detection signal of the ranging sensor 4 passes through the upper opening of the lower cavity, and at the same time, the transmission path passes through the space occupied by the dummy core 2 when it is placed on the positioning sleeve 51.

[0049] When the dummy core 2 is placed on the positioning sleeve 51 or not, the distance signal output by the distance measuring sensor 4 is different, which is used to determine whether the dummy core 2 is placed in the lower cavity.

[0050] Specifically, the distance sensor 4 is electrically connected to the mold control system; different distance signals can refer to different distance values. The distance value after placing the dummy core 2 is used as the judgment basis. When no dummy core 2 is placed on the positioning sleeve 51, the distance signal value measured by the distance sensor 4 is greater than the distance value of the judgment basis; the mold control system determines whether the dummy core 2 is placed in the lower cavity based on the distance signal measured by the current distance sensor 4. When no dummy core 2 is placed, the upper mold 1 will not move down to close with the lower mold 5, and the operator will be prompted to place the dummy core 2.

[0051] like Figure 1 The diagram shows the ranging sensor 4 before the dummy core 2 is placed. Figure 2 This is a schematic diagram of the distance measurement of the distance sensor 4 after the dummy core 2 is placed.

[0052] A mounting bracket 3 with a distance sensor 4 is installed on one side of the lower mold 5. The distance sensor 4 points to the dummy core 2. The change in the distance signal of the distance sensor 4 before and after the dummy core 2 is placed determines whether the dummy core 2 is placed. When the dummy core 2 is not placed, the mold closing and wax pressing operations are not performed, so as to achieve stable production of wax molds and improve the qualification rate of castings.

[0053] In this embodiment, the ranging sensor 4 is a laser ranging sensor to ensure measurement accuracy.

[0054] Because a wax pressing station frequently needs to change molds to produce wax molds of different sizes, but the height of the lower mold 5 differs for different wax molds, further, such as Figure 3 As shown, in this embodiment, the ranging sensor 4 is slidably mounted on the mounting bracket 3 to adjust the vertical height of the ranging sensor 4.

[0055] By sliding the distance sensor 4 onto the mounting bracket 3, the height of the distance sensor 4 can be adjusted after the mold is changed at the wax pressing station. Then, a locking structure is used to lock the height of the distance sensor 4, so that the transmission path of the detection signal of the distance sensor 4 is adapted to the current mold.

[0056] Furthermore, such as Figure 3 As shown, a guide rod 31 and a servo motor 34 are fixedly mounted on the mounting bracket 3. A slider 33 is slidably mounted on the guide rod 31. The slider 33 is fixedly connected to the ranging sensor 4. A lead screw 32 is rotatably mounted on the mounting bracket 3. The lead screw 32 passes through the through hole of the slider 33 and is connected to the slider 33 in a transmission manner. The end of the lead screw 32 is connected to the servo motor 34 in a transmission manner.

[0057] The transmission connection structure between slider 33 and lead screw 32 is existing technology and will not be described in detail here.

[0058] By driving the lead screw 32 to rotate via the servo motor 34, the slider 33 can be raised and lowered. This allows for precise control and recording of the height of the distance sensor 4 corresponding to different molds. Consequently, the detection device can quickly adjust the height of the distance sensor 4 after mold replacement.

[0059] Example 2:

[0060] Based on Example 1, such as Figure 1 , Figure 2 As shown, in this embodiment, the transmission path of the detection signal of the distance sensor 4 of the dummy core detection device for turbocharger turbine wax mold production intersects with the central axis of the positioning sleeve 51. When the dummy core 2 is placed on the positioning sleeve 51, the transmission path passes through the upper surface 22 of the dummy core 2.

[0061] The detection device also includes a sensor bracket 41, which includes a pitch angle adjustment plate 411. The pitch angle adjustment plate 411 is fixedly installed on the slider 33. The pitch angle adjustment plate 411 has a circular hole and a first arc-shaped hole 413. The circular hole is located at the center of the first arc-shaped hole 413. First fasteners are respectively inserted into the circular hole and the first arc-shaped hole 413. The first fasteners fix the ranging sensor 4 to the pitch angle adjustment plate 411. Adjusting the position of the first fastener in the first arc-shaped hole 413 adjusts the angle between the transmission path and the central axis of the positioning sleeve 51.

[0062] Specifically, the dummy core 2 is made of wax, and the upper surface 22 of the dummy core 2 includes a horizontal plane, which is not a mirror surface. The central axis of the positioning sleeve 51 is vertical.

[0063] The ranging sensor 4 in this embodiment is a commercially available product, model BL-400NZ.

[0064] The distance sensor 4 is installed by the pitch angle adjustment plate 411 to adjust the installation angle of the distance sensor 4, so that the distance sensor 4 can receive reflected signals when it detects the distance to the upper surface 22 of the dummy core 2 and the distance to the side wall of the positioning sleeve 51. For molds of different specifications, the structure of the positioning sleeve 51 and the upper surface 22 of the dummy core 2 are basically the same. When the mold is changed, only the installation height of the distance sensor 4 needs to be adjusted, which facilitates the quick adaptation of the same distance sensor 4 to multiple different molds. The distance sensor 4 is located on the side of the upper mold 1 and the lower mold 5, and does not affect the opening and closing of the mold.

[0065] Furthermore, such as Figure 3As shown, the sensor bracket 41 also includes a base plate 414, which is fixedly connected to the slider 33. A second fastener is provided on the base plate 414, and a second arc-shaped hole 415 is provided on the pitch angle adjustment plate 411. The second fastener passes through the second arc-shaped hole 415 to fix the base plate 414 and the pitch angle adjustment plate 411. Adjusting the position of the second fastener in the second arc-shaped hole 415 adjusts the orientation of the horizontal direction of the transmission path so that the transmission path intersects with the central axis.

[0066] Specifically, such as Figure 3 As shown, the first arc-shaped hole 413 is located in the vertical plane, and the second arc-shaped hole 415 is located in the horizontal plane.

[0067] The sensor bracket 41 is configured as a combination of a base plate 414 and a pitch angle adjustment plate 411. Two arc-shaped holes in different directions are provided on the pitch angle adjustment plate 411 to achieve flexible adjustment of the transmission path of the ranging sensor 4.

[0068] Example 3:

[0069] Based on Example 1, such as Figure 4 , Figure 5 As shown, the dummy core detection device for producing turbocharger turbine wax molds in this embodiment also includes an extension arm 42 and a rotating seat 6; one end of the extension arm 42 is fixedly connected to the slider 33, and the other end of the extension arm 42 is fixedly mounted with a distance measuring sensor 4; the rotating seat 6 is mounted on one side of the lower mold 5, and the mounting bracket 3 is fixedly mounted on the rotating part of the rotating seat 6. The rotating seat 6 is used to drive the extension arm 42 to rotate, so that the extension arm 42 switches between a position that avoids the movement of the upper mold 1 and a measurement position;

[0070] When the extension arm 42 is in the measurement position, the transmission path of the detection signal of the ranging sensor 4 is parallel to the central axis of the positioning sleeve 51. When the dummy core 2 is placed on the positioning sleeve 51, the transmission path passes through the upper surface 22 of the dummy core 2.

[0071] Specifically, the upper surface 22 of the dummy core 2 includes a horizontal plane, which is not a mirror surface, and the central axis of the positioning sleeve 51 is vertical; the rotating seat 6 is fixedly set on one side of the lower mold 5, and the rotating seat 6 is a rotating cylinder; the length direction of the extension arm 42 is consistent with the horizontal direction.

[0072] The distance sensor 4 is fixed by the extension arm 42, and the mounting bracket 3 is driven to rotate by the rotating seat 6, so that the extension arm 42 swings around the rotation center, so that the distance sensor 4 swings from the side of the lower mold 5 to above the lower cavity and the dummy core 2, and performs distance detection from directly above the dummy core 2, thereby improving the applicability of the detection device.

[0073] When the insertion hole 21 on the dummy core 2 is fitted onto the positioning sleeve 51, although the dummy core 2 is placed in the lower cavity, the dummy core 2 may be incorrectly positioned. In the above embodiment, single-point ranging can determine whether the placement posture of the dummy core 2 is abnormal to a certain extent, but there may be blind spots in the detection.

[0074] Furthermore, in another embodiment, such as Figure 5 As shown, there are multiple ranging sensors 4, which are distributed along the extension direction of the upper surface 22 of the dummy core 2.

[0075] Preferably, there are three ranging sensors 4, which are distributed in a triangular shape. The emission paths of the three ranging sensors 4 all pass through the aforementioned plane and are perpendicular to the plane. When the extension arm 42 is in the measurement position, multiple ranging sensors 4 simultaneously measure the distance to the corresponding position on the upper surface 22.

[0076] By setting multiple distance sensors 4 directly above the dummy core 2 and simultaneously measuring the distances at different positions on the upper surface 22, it is possible to accurately determine whether the dummy core 2 is tilted, thereby improving the dimensional accuracy of the wax mold forming.

[0077] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A device for detecting dummy cores in the production of turbocharger turbine wax molds, characterized in that: The mold used in wax model production includes an upper mold (1) and a lower mold (5). The lower mold (5) has a lower cavity. The lower cavity has a positioning sleeve (51) for placing a dummy core (2). When the dummy core (2) is placed on the positioning sleeve (51), the insertion hole (21) on the dummy core (2) is fitted onto the positioning sleeve (51). The detection device includes: Mounting bracket (3) is installed on one side of the lower mold (5); The ranging sensor (4) is mounted on the mounting bracket (3). The transmission path of the detection signal of the ranging sensor (4) passes through the upper opening of the lower cavity, and the transmission path passes through the space occupied by the dummy core (2) when it is placed on the positioning sleeve (51). When the dummy core (2) is placed on the positioning sleeve (51) or when the dummy core (2) is not placed on the positioning sleeve (51), the distance signal output by the distance measuring sensor (4) is different, which is used to determine whether the dummy core (2) is placed in the lower cavity.

2. The dummy core detection device for turbocharger turbine wax mold production as described in claim 1, characterized in that: The ranging sensor (4) is a laser ranging sensor.

3. The dummy core detection device for turbocharger turbine wax mold production as described in claim 1, characterized in that: The ranging sensor (4) is slidably mounted on the mounting bracket (3) for adjusting the vertical height of the ranging sensor (4).

4. The dummy core detection device for turbocharger turbine wax mold production as described in claim 3, characterized in that: The mounting bracket (3) is fixedly provided with a guide rod (31) and a servo motor (34). A slider (33) is slidably mounted on the guide rod (31). The slider (33) is fixedly connected to the ranging sensor (4). A lead screw (32) is rotatably mounted on the mounting bracket (3). The lead screw (32) passes through the through hole of the slider (33) and is connected to the slider (33) in a transmission connection. The end of the lead screw (32) is connected to the servo motor (34) in a transmission connection.

5. The dummy core detection device for turbocharger turbine wax mold production as described in claim 4, characterized in that: The emission path intersects the central axis of the positioning sleeve (51), and when the dummy core (2) is placed on the positioning sleeve (51), the emission path passes through the upper surface (22) of the dummy core (2); The detection device also includes a sensor bracket (41), which includes a pitch angle adjustment plate (411). The pitch angle adjustment plate (411) is fixedly installed on the slider (33). The pitch angle adjustment plate (411) is provided with a circular hole and a first arc-shaped hole (413). The circular hole is located at the center of the first arc-shaped hole (413). A first fastener is respectively passed through the circular hole and the first arc-shaped hole (413). The first fastener fixes the ranging sensor (4) to the pitch angle adjustment plate (411). Adjusting the position of the first fastener in the first arc-shaped hole (413) adjusts the angle between the emission path and the central axis of the positioning sleeve (51).

6. The dummy core detection device for turbocharger turbine wax mold production as described in claim 5, characterized in that: The sensor bracket (41) further includes a base plate (414), which is fixedly connected to the slider (33). The base plate (414) is provided with a second fastener, and the pitch angle adjustment plate (411) is provided with a second arc-shaped hole (415). The second fastener passes through the second arc-shaped hole (415) to fix the base plate (414) and the pitch angle adjustment plate (411) in place. Adjusting the position of the second fastener in the second arc-shaped hole (415) adjusts the orientation of the horizontal direction of the transmission path, so that the transmission path intersects with the central axis.

7. The dummy core detection device for turbocharger turbine wax mold production as described in claim 4, characterized in that: The detection device also includes an extension arm (42) and a rotating base (6); One end of the extension arm (42) is fixedly connected to the slider (33), and the other end of the extension arm (42) is fixedly mounted with the ranging sensor (4); The rotating seat (6) is installed on one side of the lower mold (5), and the mounting bracket (3) is fixedly installed on the rotating part of the rotating seat (6). The rotating seat (6) is used to drive the extension arm (42) to rotate, so that the extension arm (42) switches between the position of avoiding the movement of the upper mold (1) and the measurement position. When the extension arm (42) is in the measurement position, the emission path is parallel to the central axis of the positioning sleeve (51), and when the dummy core (2) is placed on the positioning sleeve (51), the emission path passes through the upper surface (22) of the dummy core (2).

8. The dummy core detection device for turbocharger turbine wax mold production as described in claim 7, characterized in that: The rotating seat (6) is a rotary cylinder.

9. The dummy core detection device for turbocharger turbine wax mold production as described in claim 7, characterized in that: The number of the ranging sensors (4) is multiple, and the multiple ranging sensors (4) are distributed along the extension direction of the upper surface (22) of the dummy core (2).

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