Shape correcting tool and method for sliding rail casting wax mold

Abstract

The invention relates to the technical field of mold making processes in precision investment casting, in particular to a shape correcting tool and method for a sliding rail casting wax mold. The shape correcting tool comprises a base and a vertical arc-shaped pressing plate, and an arc-shaped groove is formed in the top face of the base. A baffle is integrally formed on the top surface of the base, is arranged at the edge position of the rear end of the arc-shaped groove, and is used for abutting against the back surface of the sliding rail casting wax mold; the vertical arc-shaped pressing plate is used for being vertically pressed on the concave arc face of the sliding rail casting wax mold. A transverse arc-shaped pressing plate is installed on the front face of the base through a plurality of L-shaped supports, and the transverse arc-shaped pressing plate is used for being pressed on the front face of the sliding rail casting wax mold. When the sliding rail casting wax mold is shaped, the sliding rail casting wax mold which is not cooled after mold stripping is placed in the arc-shaped groove in the top face of the base, the transverse arc-shaped pressing plate and the vertical arc-shaped pressing plate are pressed on the front face and the concave arc face of the sliding rail casting wax mold respectively, and then the sliding rail casting wax mold can be shaped.

Description

Technical Field

[0001] The invention relates to the technical field of mold making process in investment casting, and in particular to a shape correction tool and method for a wax mold of a slide rail casting. Background Art

[0002] In investment casting, mold making is the first process in investment precision casting. The quality of the wax mold directly affects the quality of the casting. If the surface quality and size of the wax mold are not well controlled in the mold making process, the post-processing process will take a lot of effort to save it, and in serious cases, the casting will be directly scrapped.

[0003] The wax mold of the slide rail casting is in an arc shape, and the difference between its length and width is large, which makes the wax mold very easy to deform. How to correct the shape of the wax mold of the slide rail casting to prevent it from deformation is an urgent problem to be solved. Summary of the invention

[0004] The main purpose of the present invention is to provide a shape correction tool and method for a wax mold of a slide rail casting, aiming to solve the above technical problems.

[0005] To achieve the above-mentioned purpose, on the one hand, the present invention proposes a shape correction tool for the slide rail casting wax mold, including a base and a vertical arc pressure plate, wherein an arc groove is arranged on the top surface of the base for placing the slide rail casting wax mold to be calibrated; a baffle is integrally formed on the top surface of the base, and the baffle is arranged at the rear end edge of the arc groove, and the baffle is used to abut against the back of the slide rail casting wax mold; the vertical arc pressure plate is used to vertically press on the concave arc surface of the slide rail casting wax mold; a transverse arc pressure plate is installed on the front side of the base through a plurality of L-shaped supports, and the transverse arc pressure plate is used to press on the front side of the slide rail casting wax mold.

[0006] Preferably, a stopper is provided on the top surface of the base, the stopper is located at the right end of the arc-shaped groove, and the stopper is used to abut against the right end surface of the wax mold of the slide rail casting.

[0007] Preferably, the L-shaped support includes a vertical portion and a horizontal connecting portion, and the horizontal connecting portion is fixedly mounted on the front side of the base by screws; a screw is inserted into the through hole of the vertical portion, and a nut is screwed on the screw, and the nut is located on the front side of the vertical portion; the rear end of the screw is fixed to the transverse arc pressure plate; a spring is sleeved on the screw, the front end of the spring abuts against the vertical portion of the L-shaped support, and the rear end of the spring abuts against the transverse arc pressure plate; the spring is always in a compressed state, forming a horizontal backward force on the transverse arc pressure plate.

[0008] Preferably, the nut is a dovetail nut.

[0009] Preferably, a handle bar is integrally formed on the concave curved surface of the vertical curved pressure plate; a handle hole is formed between the handle bar and the concave curved surface of the vertical curved pressure plate.

[0010] Preferably, the number of the handle holes is two, a reinforcing rib is integrally formed between the middle portion of the handle rod and the concave arc surface of the vertical arc pressure plate, and the two handle holes are located on the left and right sides of the reinforcing rib.

[0011] Preferably, a plurality of lightening holes are provided on the base.

[0012] Preferably, the top surface of the baffle is provided with an inner concave surface; the inner concave surface is coplanar with the theoretical profile of the concave arc surface of the wax mold of the slide rail casting to be calibrated.

[0013] On the other hand, the present invention also provides a method for correcting the shape of a wax mold of a slide rail casting, using the above-mentioned correction tool, comprising the following steps:

[0014] S1. After the wax mold of the slide rail casting is pressed, the wax mold of the slide rail casting that has not been cooled after being ejected from the mold is placed into the arc groove on the top surface of the base;

[0015] S2, using a transverse arc-shaped pressing plate to press against the front side of the wax mold of the slide rail casting;

[0016] S3, using a vertical arc-shaped pressing plate to vertically press against the concave arc surface of the wax mold of the slide rail casting;

[0017] S4. After the wax mold of the slide rail casting has cooled in the shaping tooling for 4 to 6 hours, it can be taken out.

[0018] Preferably, in step S1, the nut is first rotated clockwise to move the screw forward, thereby driving the transverse arc pressure plate to overcome the elastic force of the spring and move forward, so that the spacing distance between the transverse arc pressure plate and the baffle plate is increased, so as to place the slide rail casting wax mold into the arc groove on the top surface of the base; in step S2, when using the transverse arc pressure plate to press the slide rail casting wax mold, the nut is rotated counterclockwise to push the transverse arc pressure plate backward under the elastic force of the spring, and the nut continues to be rotated counterclockwise, and the nut moves forward on the screw until a gap appears between the nut and the vertical part of the L-shaped support. At this time, the transverse arc pressure plate always rests on and presses on the front side of the slide rail casting wax mold under the action of the spring.

[0019] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0020] (1) By adopting the shape correction tool provided by the present invention, when the shape of the slide rail casting wax mold is corrected, the slide rail casting wax mold that has not been cooled after being ejected from the mold is placed in the arc groove on the top surface of the base, and the horizontal arc pressing plate and the vertical arc pressing plate are respectively pressed on the front surface and the concave arc surface of the slide rail casting wax mold, so that the shape of the slide rail casting wax mold can be corrected. The shape correction tool has a simple structure and is easy to operate.

[0021] (2) By adopting the shaping tool provided by the present invention, when the slide rail casting wax mold is shaped, the vertical arc-shaped pressure plate can always vertically press on the concave arc surface of the slide rail casting wax mold for shaping by using its own weight. In addition, the transverse arc-shaped pressure plate always rests against and presses on the front side of the slide rail casting wax mold for shaping under the action of the spring. Therefore, in the entire shaping process, no additional power is required, and the shaping can be completed by using the vertical arc-shaped pressure plate's own weight and the elastic force of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 This is a schematic diagram of the shape correction tool provided by the present invention when correcting the shape of the slide rail casting wax mold.

[0024] Explanation of the accompanying drawings: 1. Base; 1a. Arc groove; 1b. Baffle; 1c. Lightening hole; 1d. Inner concave surface; 2. Vertical arc pressure plate; 2a. Handle rod; 2b. Handle hole; 2c. Reinforcing rib; 3. Horizontal arc pressure plate; 4. Wax mold of slide rail casting; 5. L-shaped support; 5a. Vertical part; 5b. Horizontal connecting part; 6. Screw; 7. Nut; 8. Spring; 9. Stop block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly. In this embodiment, the front and front indications are the same surface, and the back and back indications are the same surface.

[0027] Combination Figure 1 As shown, on the one hand, this embodiment provides a shaping tool for a slide rail casting wax mold, including a base 1 and a vertical arc pressure plate 2, wherein an arc groove 1a is provided on the top surface of the base 1 for placing the slide rail casting wax mold 4 to be shaped; a baffle 1b is integrally formed on the top surface of the base 1, and the baffle 1b is provided at the rear end edge of the arc groove 1a, and the baffle 1b is used to abut against the back of the slide rail casting wax mold 4; the vertical arc pressure plate 2 is used to vertically press on the concave arc surface of the slide rail casting wax mold 4; a transverse arc pressure plate 3 is installed on the front side of the base 1 through a plurality of L-shaped supports 5, and the transverse arc pressure plate 3 is used to press on the front side of the slide rail casting wax mold 4.

[0028] A stopper 9 is provided on the top surface of the base 1, and the stopper 9 is located at the right end of the arc groove 1a, and the stopper 9 is used to stop on the right end surface of the slide rail casting wax mold 4. The stopper 9 limits the slide rail casting wax mold 4 to prevent the slide rail casting wax mold 4 from deviating.

[0029] The L-shaped support 5 includes a vertical portion 5a and a horizontal connecting portion 5b, and the horizontal connecting portion 5b is fixedly installed on the front side of the base 1 by screws; a screw rod 6 is inserted into the through hole of the vertical portion 5a, and a nut 7 is screwed on the screw rod 6, and the nut 7 is located on the front side of the vertical portion 5a; the rear end of the screw rod 6 is fixed on the transverse arc pressure plate 3; a spring 8 is sleeved on the screw rod 6, and the front end of the spring 8 abuts against the vertical portion 5a of the L-shaped support 5, and the rear end of the spring 8 abuts against the transverse arc pressure plate 3; the spring 8 is always in a compressed state, forming a horizontal backward force on the transverse arc pressure plate 3.

[0030] In order to facilitate the rotation of the nut 7, the nut 7 is a dovetail nut.

[0031] In order to facilitate carrying the vertical arc-shaped pressing plate 2, a handle bar 2a is integrally formed on the concave arc surface of the vertical arc-shaped pressing plate 2; a handle hole 2b is formed between the handle bar 2a and the concave arc surface of the vertical arc-shaped pressing plate 2. Furthermore, there are two handle holes 2b, and a reinforcing rib 2c is integrally formed between the middle of the handle bar 2a and the concave arc surface of the vertical arc-shaped pressing plate 2, and the two handle holes 2b are located on the left and right sides of the reinforcing rib 2c.

[0032] In this embodiment, a plurality of lightening holes 1 b are provided on the base 1 in order to reduce the weight of the base 1 .

[0033] In order to avoid interference between the baffle plate 1b and the vertical arc-shaped pressing plate 2, the top surface of the baffle plate 1b is provided with an inner concave surface 1d; the inner concave surface 1d is coplanar with the theoretical profile of the concave arc surface of the slide rail casting wax mold 4 to be shaped. Even if part of the vertical arc-shaped pressing plate 2 is pressed on the inner concave surface 1d of the baffle plate 1b, the shaping effect of the vertical arc-shaped pressing plate 2 is not affected.

[0034] On the other hand, this embodiment also provides a method for correcting the shape of a wax mold of a slide rail casting, using the above-mentioned correction tool, comprising the following steps:

[0035] S1. After the slide rail casting wax mold 4 is pressed, the slide rail casting wax mold 4 that has not been cooled after being ejected from the mold is placed into the arc groove 1a on the top surface of the base 1;

[0036] S2, using the transverse arc-shaped pressing plate 3 to press against the front side of the slide rail casting wax mold 4;

[0037] S3, using the vertical arc-shaped pressing plate 2 to vertically press on the concave arc surface of the slide rail casting wax mold 4; specifically, the vertical arc-shaped pressing plate 2 can always vertically press on the concave arc surface of the slide rail casting wax mold 4 for correction by its own gravity;

[0038] S4. After the slide rail casting wax mold 4 is cooled in the shaping tooling for 4 to 6 hours, it can be taken out.

[0039] Furthermore, in the step S1, the nut 7 is firstly rotated clockwise to move the screw rod 6 forward, thereby driving the transverse arc-shaped pressing plate 3 to move forward against the elastic force of the spring 8, so that the spacing distance between the transverse arc-shaped pressing plate 3 and the baffle 1b is increased, so as to place the slide rail casting wax mold 4 into the arc-shaped groove 1a on the top surface of the base 1;

[0040] Furthermore, when the transverse arc pressure plate 3 is used to press the slide rail casting wax mold 4, the nut 7 is rotated counterclockwise to push the transverse arc pressure plate 3 backward under the elastic force of the spring 8, and the nut 7 continues to be rotated counterclockwise, and the nut 7 moves forward on the screw rod 6 until a gap appears between the nut 7 and the vertical portion 5a of the L-shaped support 5. At this time, the transverse arc pressure plate 3 is always against and pressed against the front side of the slide rail casting wax mold 4 under the action of the spring 8.

[0041] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A shape correction tool for a slide rail casting wax mold, characterized in that: It comprises a base (1) and a vertical arc-shaped pressing plate (2), wherein an arc-shaped groove (1a) is arranged on the top surface of the base (1) for placing a wax mold (4) of a slide rail casting to be calibrated; A baffle (1b) is integrally formed on the top surface of the base (1), and the baffle (1b) is arranged at the rear end edge of the arc-shaped groove (1a), and the baffle (1b) is used to abut against the back of the slide rail casting wax mold (4); The vertical arc-shaped pressing plate (2) is used to vertically press on the concave arc surface of the slide rail casting wax mold (4); A transverse arc-shaped pressing plate (3) is installed on the front side of the base (1) via a plurality of L-shaped supports (5), and the transverse arc-shaped pressing plate (3) is used to press tightly on the front side of the wax mold (4) of the slide rail casting.

2. A shape correction tool for a slide rail casting wax mold as claimed in claim 1, characterized in that: A stopper (9) is provided on the top surface of the base (1), the stopper (9) being located at the right end of the arc-shaped groove (1a), and the stopper (9) is used to abut against the right end surface of the slide rail casting wax mold (4).

3. A shape correction tool for a slide rail casting wax mold as claimed in claim 1, characterized in that: The L-shaped support (5) comprises a vertical portion (5a) and a horizontal connecting portion (5b), and the horizontal connecting portion (5b) is fixedly mounted on the front side of the base (1) by means of screws; A screw rod (6) is inserted into the through hole of the vertical portion (5a), and a nut (7) is screwed on the screw rod (6), and the nut (7) is located on the front side of the vertical portion (5a); the rear end of the screw rod (6) is fixed on the transverse arc pressure plate (3); a spring (8) is sleeved on the screw rod (6), the front end of the spring (8) abuts against the vertical portion (5a) of the L-shaped support (5), and the rear end of the spring (8) abuts against the transverse arc pressure plate (3); the spring (8) is always in a compressed state, forming a horizontal backward force on the transverse arc pressure plate (3).

4. A shape correction tool for a slide rail casting wax mold as claimed in claim 3, characterized in that: The nut (7) is a dovetail nut.

5. A shape correction tool for a slide rail casting wax mold as claimed in claim 1, characterized in that: A handle bar (2a) is integrally formed on the concave curved surface of the vertical curved pressure plate (2); a handle hole (2b) is formed between the handle bar (2a) and the concave curved surface of the vertical curved pressure plate (2).

6. A shape correction tool for a slide rail casting wax mold as claimed in claim 5, characterized in that: There are two handle holes (2b), and a reinforcing rib (2c) is integrally formed between the middle of the handle rod (2a) and the concave arc surface of the vertical arc pressure plate (2), and the two handle holes (2b) are located on the left and right sides of the reinforcing rib (2c).

7. A shape correction tool for a slide rail casting wax mold as claimed in claim 1, characterized in that: A plurality of lightening holes (1b) are provided on the base (1).

8. A shape correction tool for a slide rail casting wax mold as claimed in claim 1, characterized in that: The top surface of the baffle (1b) is provided with an inner concave surface (1d); the inner concave surface (1d) is coplanar with the theoretical profile of the concave arc surface of the slide rail casting wax mold (4) to be calibrated.

9. A method for correcting the shape of a wax mold of a slide rail casting, characterized in that: The shaping tool according to any one of claims 1 to 8 is used, comprising the following steps: S1. After the slide rail casting wax mold (4) is pressed, the slide rail casting wax mold (4) that has not been cooled after being ejected from the mold is placed into the arc groove (1a) on the top surface of the base (1); S2, using a transverse arc-shaped pressing plate (3) to press against the front side of the slide rail casting wax mold (4); S3, using a vertical arc-shaped pressing plate (2) to vertically press against the concave arc surface of the slide rail casting wax mold (4); S4. After the slide rail casting wax model (4) is cooled in the shaping tool for 4 to 6 hours, it can be taken out.

10. A method for correcting the shape of a wax mold for a slide rail casting according to claim 9, characterized in that: In step S1, the nut (7) is first rotated clockwise to move the screw (6) forward, thereby driving the transverse arc pressure plate (3) to overcome the elastic force of the spring (8) and move forward, so that the spacing between the transverse arc pressure plate (3) and the baffle (1b) is increased, so that the slide rail casting wax model (4) can be placed in the arc groove (1a) on the top surface of the base (1); In step S2, when the transverse arc pressure plate (3) is used to press the slide rail casting wax mold (4), the nut (7) is rotated counterclockwise, and the transverse arc pressure plate (3) is pushed backward under the elastic force of the spring (8), and the nut (7) continues to be rotated counterclockwise, and the nut (7) moves forward on the screw rod (6) until a gap appears between the nut (7) and the vertical portion (5a) of the L-shaped support (5). At this time, the transverse arc pressure plate (3) is always pressed against and pressed against the front side of the slide rail casting wax mold (4) under the action of the spring (8).

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