Sand casting real sample mold extraction tool

Abstract

The utility model discloses a sand casting real sample mold extracting tool which comprises a pull rod and a grabbing mechanism which is arranged at one end of the pull rod and used for grabbing a real sample mold, the grabbing mechanism comprises two clamping hook rods which are symmetrically arranged along the axis of the pull rod, one end of each clamping hook rod is rotationally connected with the tail end of the pull rod, and the other end of each clamping hook rod is provided with a grabbing part. The two clamping hook rods rotate relative to the pull rod and can be close to or separated from each other. The pull rod is further provided with a control mechanism used for controlling the clamping hook rods to be close to or separated from each other synchronously, the control mechanism comprises a control rod arranged on the pull rod in parallel and a connecting rod connecting the control rod and the clamping hook rods, and the control rod is slidably connected with the pull rod and can slide relative to the pull rod in the axial direction. One ends of the two connecting rods are rotationally connected with the end, close to the grabbing mechanism, of the control rod, the other ends of the two connecting rods are rotationally connected with the two clamping hook rods correspondingly, and the sliding control rod can drive the clamping hook rods to be close to or separated from each other through the connecting rods. The utility model can solve the technical problem that the sample mould is difficult to demould and take out after the sand mould is solidified in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of casting equipment, in particular to a tool for extracting a real sample mold of sand casting. Background Art

[0002] The attached test block refers to a test block that is cast at the same time as the casting using the same batch of raw materials as the casting. The mechanical results measured by the attached test block are closer to the actual mechanical properties of the casting than those of the single-cast test block.

[0003] The cast test blocks of aluminum alloy castings are usually cast on the runner or at a position where the casting is easy to cut. For aluminum alloy castings cast in sand molds, the cast test blocks need to be shaped by a cast test block sample mold. The cast test block sample mold is generally made of pine wood or metal.

[0004] The sample mold of the pine wood casting test block is usually extracted from the solidified sand mold by hammering nails or screwing in screws, and then pulling it out. The sample mold is easily damaged and has a limited number of uses. The sample mold of the metal casting test block is usually extracted from the solidified sand mold by screwing in screws and then pulling it out. After multiple uses, there are problems such as thread slippage, and the extraction operation takes a long time. Summary of the invention

[0005] The utility model aims to provide a sand casting sample mold extraction tooling, which can solve the technical problem in the prior art that the sample mold is difficult to be demoulded and taken out after the sand mold is solidified.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0007] A sand casting sample mold extraction tool comprises a pull rod and a grabbing mechanism arranged at one end of the pull rod for grabbing the sample mold. The grabbing mechanism comprises two hook rods symmetrically arranged along the axis of the pull rod. One end of the hook rod is rotatably connected to the end of the pull rod, and the other end is provided with a grabbing part. The two hook rods can be close to or separated from each other by rotating relative to the pull rod.

[0008] The pull rod is also provided with a control mechanism for controlling the hook rods to move toward or away from each other synchronously. The control mechanism includes a control rod arranged in parallel on the pull rod and a connecting rod connecting the control rod and the hook rod. The control rod is slidably connected to the pull rod and can slide axially relative to the pull rod. One end of the two connecting rods is rotatably connected to one end of the control rod close to the grasping mechanism, and the other end is rotatably connected to the two hook rods respectively. The sliding control rod can drive the hook rods to move toward or away from each other through the connecting rod.

[0009] Furthermore, a spring is provided between the control rod and the pull rod, and the control rod can slide to overcome the elastic force of the spring to separate the hook rods from each other, and the control rod can slide under the action of the elastic force of the spring to bring the hook rods closer to each other.

[0010] Furthermore, the control rod is arranged inside the pull rod, one end of the control rod passes through the end of the pull rod provided with a grabbing mechanism for connection with the connecting rod, and the other end of the control rod passes through the end of the pull rod away from the grabbing mechanism for easy operation.

[0011] Furthermore, the hook rod and the pull rod are rotatably connected via a hinge.

[0012] Furthermore, the connecting rod and the control rod are rotationally connected via a hinge, and the connecting rod and the hook rod are also rotationally connected via a hinge.

[0013] Furthermore, a handle perpendicular to the pull rod is provided at one end of the pull rod away from the grabbing mechanism.

[0014] Furthermore, a round rod is sleeved on the pull rod, which is used to hammer the handle with the round rod to apply impact force to the pull rod.

[0015] Furthermore, the round rod is made of copper alloy.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects:

[0017] 1. The extraction tooling made by the utility model can quickly and effectively complete the extraction of the aluminum alloy sand casting test block sample mold, greatly saving the extraction time;

[0018] 2. The device has a simple and reliable structure, and can control the opening and closing of the grabbing mechanism at the handle to achieve grabbing and putting down, which is easy and labor-saving to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model when two hook rods are close to each other.

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure.

[0021] Figure 3 It is a schematic cross-sectional structure diagram of the utility model in which two hook rods are in a separated state.

[0022] Figure 4 It is a state schematic diagram of the utility model for extracting a real sample mold.

[0023] Description of the drawings: 1. Pull rod, 11. Handle, 12. Round rod, 121. Round rod retaining ring, 2. Grabbing mechanism, 21. Hook rod, 211. Grabbing part, 3. Control mechanism, 31. Control rod, 311. Auxiliary handle, 312. Spring retaining ring, 313. Limiting ring, 32. Connecting rod, 4. Spring, 5. End cap, 6. Actual sample mold. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clearly understood, the characteristics and performance of a sand casting sample mold extraction tooling in the utility model are further described in detail below in conjunction with the drawings and embodiments.

[0025] Please see attached Figures 1 to 4 A sand casting sample mold extraction tool comprises a pull rod 1 and a grabbing mechanism 2 for grabbing the sample mold provided at one end of the pull rod 1, and a handle 11 perpendicular to the pull rod 1 is provided at the other end of the pull rod 1. A round rod 12 is also sleeved on the pull rod 1, and is used to hammer the handle 11 with the round rod 12 to apply an impact force to the pull rod 1. In particular, the round rod 12 is made of copper alloy.

[0026] The grabbing mechanism 2 includes two hook rods 21 symmetrically arranged along the axis of the pull rod 1, one end of the hook rod 21 is rotatably connected to the end of the pull rod 1 through a hinge, and the other end is provided with a grabbing portion 211, and the grabbing portions 211 on the two hook rods 21 are arranged oppositely. The two hook rods 21 can be rotated relative to the pull rod 1 to approach or separate from each other, and when approaching, the ends of the two grabbing portions 211 can cooperate to realize the grabbing function, and when separated, the grabbed object can be released.

[0027] The pull rod 1 is also provided with a control mechanism 3 for controlling the hook rod 21 to synchronously approach or separate. The control mechanism 3 comprises a control rod 31 arranged in parallel on the pull rod 1 and a connecting rod 32 connecting the control rod 31 and the hook rod 21 .

[0028] The control rod 31 is slidably connected to the pull rod 1 and can slide axially relative to the pull rod 1. In the specific design, the control rod can be arranged outside the pull rod 1 or inside the pull rod 1. Preferably, in order to make the device more integrated and simple, in this embodiment, the control rod 31 is arranged inside the pull rod 1, one end of the control rod 31 passes through the end of the pull rod 1 provided with the grabbing mechanism 2 for connection with the connecting rod 32, and one end of the control rod 31 passes through the other end of the control rod 31 near the end of the pull rod 1 away from the grabbing mechanism 2 for convenient operation.

[0029] One end of the two connecting rods 32 is rotatably connected to the end of the control rod 31 close to the grabbing mechanism 2 through a hinge, and the other end is rotatably connected to the two hook rods 21 through a hinge. The sliding control rod 31 can drive the hook rods 21 to move closer to or apart from each other through the connecting rod 32.

[0030] In the specific design, for the convenience of operation, a spring 4 is provided between the control rod 31 and the pull rod 1. The control rod 31 overcomes the elastic force of the spring 4 and slides to separate the hook rods 21 from each other. The control rod 31 slides under the elastic force of the spring 4 to bring the hook rods 21 closer to each other.

[0031] When implementing it, Figure 1 and 2As shown, the hook rods 21 are symmetrically arranged on both sides of the lower end of the pull rod 1, the upper end of the hook rod 21 is rotatably connected to the pull rod 1 through a hinge, and the lower end of the hook rod 21 is provided with a grabbing portion 211. The two hook rods 21 rotate relative to the pull rod 1 and approach each other, so that the ends of the two grabbing portions 211 can approach each other to achieve a grabbing effect.

[0032] like Figure 2 As shown, the control rod 31 is inserted into the hollow pull rod 1. The upper end of the control rod 31 passes through the end of the pull rod 1 provided with the handle 11, and an auxiliary handle 311 is provided at the upper end of the pull rod 1 to facilitate the operation of the control rod 31 to slide relative to the pull rod 1. The lower end of the control rod 31 passes through the end of the pull rod 1 provided with the grabbing mechanism 2 to between the two hook rods 21, and the two connecting rods 32 are rotatably connected to the lower end of the control rod 31 at one end, and are rotatably connected to the two hook rods 21 at the other end. When the control rod 31 slides downward relative to the pull rod 1, the control rod 31 pushes the two hook rods 21 to separate synchronously through the connecting rod 32. When the control rod 31 slides upward relative to the pull rod 1, the control rod 31 pulls the two hook rods 21 to move closer synchronously through the connecting rod 32.

[0033] To further facilitate operation, Figure 2 As shown, a spring 4 is provided between the control rod 31 and the pull rod 1. The pull rod 1 is provided with an end cap 5 at one end provided with the grabbing mechanism 2, and a spring retaining ring 312 and a limiting ring 313 are provided on the control rod 31 at a position located inside the pull rod 1. The spring is provided between the end cap 5 and the spring retaining ring 312, and the elastic force of the spring 4 pushes the control rod 31 upward relative to the pull rod 1, so that the limiting ring 313 is fixed on the handle 11. At this time, the device uses the spring elastic force to maintain the grabbing state in which the two hook rods 21 are close to each other.

[0034] like Figure 3 As shown in FIG. 1 , if a downward force is applied to the control rod 31, so that the control rod 31 overcomes the elastic force of the spring 4 and slides downward relative to the pull rod 1, the control rod 31 pushes the two hook rods 21 to separate from each other through the connecting rod 32. The distance of pushing the control rod 31 can control the degree of separation of the two hook rods 21. After the force applied to the control rod 31 is removed, the control rod 31 returns to the original position under the elastic force of the spring 4. Figure 2 The state shown is that the two hook rods 21 are close to each other to achieve grabbing.

[0035] When the real sample mold needs to be extracted from the sand mold, the handle 11 of the device is held, and the auxiliary handle 311 is pushed with the thumb to slide the control rod 31 downward relative to the pull rod 1 to overcome the elastic force of the spring 4, and the two hook rods 21 are separated synchronously.

[0036] Adjust the force to control the degree of separation of the two hook rods 21, so that the grabbing parts 211 at the ends of the two hook rods 21 respectively enter the corresponding hook holes on the sample mold 6, and release the auxiliary handle 311. Then, under the elastic force of the spring 4, the two hook rods 21 move closer to each other, and the two grabbing parts 211 firmly grab the sample mold 6. Figure 4 shown.

[0037] Use the round rod 12 to hammer the handle 11 upwards, and use the upward impact force of the round rod 12 to quickly extract the real sample mold 6 from the sand mold. In order to prevent the position of the round rod 12 from falling too low, the pull rod 1 is also provided with a round rod retaining ring 121.

[0038] After the sample mold 6 is taken out, the auxiliary handle 311 is pushed to separate the two hook rods 21 synchronously, so that the device can be separated from the sample mold 6.

[0039] It should be noted that the parts not described in detail in this scheme are all prior art, and the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model fall within the protection scope of the present utility model.

Claims

1. A sand casting sample mold extraction tool, comprising a pull rod (1) and a grabbing mechanism (2) arranged at one end of the pull rod (1) for grabbing the sample mold, the grabbing mechanism (2) comprising two hook rods (21) symmetrically arranged along the axis of the pull rod (1), one end of the hook rod (21) being rotatably connected to the end of the pull rod (1), and the other end being provided with a grabbing portion (211), the two hook rods (21) being able to move closer to or away from each other by rotating relative to the pull rod (1), characterized in that: It also includes a control mechanism (3) for controlling the hook rod (21) to move synchronously toward or away from each other. The control mechanism (3) comprises a control rod (31) arranged in parallel on the pull rod (1) and a connecting rod (32) connecting the control rod (31) and the hook rod (21); the control rod (31) is slidably connected to the pull rod (1) and can slide axially relative to the pull rod (1); one end of the two connecting rods (32) is rotatably connected to one end of the control rod (31) close to the grasping mechanism (2), and the other ends are rotatably connected to the two hook rods (21) respectively; the sliding control rod (31) can drive the hook rods (21) to move closer to or away from each other through the connecting rod (32).

2. A sand casting sample mold extraction tool as claimed in claim 1, characterized in that: A spring (4) is provided between the control rod (31) and the pull rod (1); the control rod (31) can slide against the elastic force of the spring (4) to separate the hook rods (21) from each other; and the control rod (31) can slide under the elastic force of the spring (4) to bring the hook rods (21) closer to each other.

3. A sand casting sample mold extraction tool as claimed in claim 2, characterized in that: The control rod (31) is arranged inside the pull rod (1), one end of the control rod (31) passes through an end of the pull rod (1) provided with a gripping mechanism (2) for connection with a connecting rod (32), and the other end of the control rod (31) passes through the vicinity of an end of the pull rod (1) away from the gripping mechanism (2) for convenient operation.

4. A sand casting sample mold extraction tool as claimed in claim 1, characterized in that: The hook rod (21) is rotatably connected to the pull rod (1) via a hinge.

5. The sand casting sample mold extraction tool as claimed in claim 1, characterized in that: The connecting rod (32) and the control rod (31) are rotatably connected via a hinge, and the connecting rod (32) and the hook rod (21) are also rotatably connected via a hinge.

6. A sand casting sample mold extraction tool as claimed in claim 1, characterized in that: The pull rod (1) is provided with a handle (11) perpendicular to the pull rod (1) at one end away from the grasping mechanism (2).

7. A sand casting sample mold extraction tool as claimed in claim 6, characterized in that: A round rod (12) is also sleeved on the pull rod (1) for hammering the handle (11) with the round rod (12) to apply an impact force to the pull rod (1).

8. A sand casting sample mold extraction tool as claimed in claim 7, characterized in that: The material of the round rod (12) is copper alloy.

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