Coating agent test device

Abstract

The present invention provides a coating agent test device, comprising: a frame positioning part for positioning the frame part of a mold frame at a predetermined position when the mold frame is placed on a metal block; and a connection positioning part for positioning a connection part that is a part provided on the frame part and connected to a driving part applying a force at a predetermined position when the mold frame is placed on the metal block.

Description

Technical Field

[0001] The present invention relates to a mold coating agent testing device. Background Art

[0002] Generally, in a die-casting method, in order to prevent sintering of a mold due to molten metal and to facilitate detachment from the mold after product molding, a mold coating agent is pre-coated on the inner surface of the mold. A testing method for studying properties such as the adhesion and strength of the mold coating agent is known. For example, in the method described in Japanese Unexamined Patent Application Publication No. 2005-9971, a mold coating agent is applied to a plate-shaped metal block (hereinafter referred to as a "plate-shaped block"), and the plate-shaped block is placed in such a manner as to block the lower end of a cylindrical metal block (hereinafter referred to as a "cylindrical block"). Molten metal is poured into the cylindrical block, and the molten metal is solidified to form a casting. Then, a pulling or pushing force is applied to the cylindrical block, and based on the load at this time and the surface state of the plate-shaped block after removing the cylindrical block and the casting, the performance of the mold coating agent is evaluated. Summary of the Invention

[0003] In the above performance evaluation of the mold coating agent, for accurate evaluation, it is desirable that the position and direction of the force applied to the cylindrical block are specified positions and directions. However, in the method described in Japanese Unexamined Patent Application Publication No. 2005-9971, regarding adjusting the position and direction of the applied force, it depends on the proficiency of the operator. In particular, in the case of repeatedly performing multiple tests for evaluation, there is a problem that the evaluation accuracy decreases.

[0004] The present invention can be implemented in the following manner.

[0005] (1) According to one aspect of the present invention, there is provided a mold coating agent testing device. The mold coating agent testing device applies a mold coating agent to the surface of a metal block, places a cylindrical metal mold frame on the metal block in such a manner as to block one end of the metal mold frame, and after flowing molten metal into the metal mold frame and solidifying it, applies a pulling or pushing force to the metal mold frame to separate the metal mold frame from the metal block, thereby testing the performance of the mold coating agent. The mold coating agent testing device includes: a frame positioning portion that positions the frame portion of the metal mold frame at a predetermined position when the metal mold frame is placed on the metal block; and a connection positioning portion that positions the connection portion, which is a portion provided on the frame portion and is connected to a drive portion that applies the force, at a predetermined position when the metal mold frame is placed on the metal block.

[0006] The mold coating agent testing device of the above-described method has a frame positioning portion and a connection positioning portion, and can set the entire metal mold frame on the metal block in such a way that both the frame portion and the connection portion are arranged at predetermined positions on the metal block. Thus, especially when repeatedly conducting multiple tests for evaluation, when applying a pulling or pushing force to the metal mold frame, the position and direction of the applied force can be made accurate and almost fixed regardless of the operator's proficiency, so that measurement errors can be suppressed and the evaluation accuracy can be improved.

[0007] (2) In the above-described method, the frame positioning portion may also have a frame contact portion. The frame contact portion contacts a part of the entire outer peripheral surface of the frame portion from the outside of the frame portion and has a shape along the shape of the frame portion. According to this method, since the frame contact portion has a shape along the shape of the frame portion, the frame contact portion can easily position the frame portion at the installation position by contacting at least a part of the entire outer peripheral surface of the frame portion from the outside of the frame portion.

[0008] (3) In the above-described method, the connection portion is formed to protrude from the outer peripheral surface of the frame portion, and the connection positioning portion may also have a connection contact portion. The connection contact portion restricts the relative rotation of the frame portion with respect to the metal block by contacting the connection portion. According to this method, the relative rotation of the frame portion with respect to the metal block is restricted by the connection contact portion contacting the connection portion in the circumferential direction. Therefore, the connection portion can be easily positioned at the installation position.

[0009] (4) In the above-described method, a mold frame positioning member may also be provided. The mold frame positioning member has the above-described frame positioning portion and the above-described connection positioning portion. According to this method, compared with the case where the frame positioning portion and the connection positioning portion are constituted by different members, the device structure can be made simple and miniaturized.

[0010] (5) In the above-described method, a moving mechanism portion may also be provided. The moving mechanism portion enables the mold frame positioning member to move relative to the metal block. According to this method, since the mold frame positioning member can be moved closer to and away from the surface of the metal block, the operability can be improved. For example, by moving the mold frame positioning member away when applying a force to the metal mold frame, interference with the drive portion can be suppressed.

[0011] (6) In the above-described method, a movement restricting portion may also be provided. The movement restricting portion faces the above-described surface and restricts the movement of the metal block in the direction toward the metal mold frame side. According to this method, the movement of the metal block in the direction toward the metal mold frame side is restricted by the movement restricting portion. Therefore, when a force is applied to the metal mold frame by the drive portion, the metal block can be prevented from moving and tilting toward the metal mold frame side, and an accurate test can be conducted. Description of the Drawings

[0012] Hereinafter, with reference to the accompanying drawings, the features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described. In the drawings, the same reference numerals denote the same elements.

[0013] Figure 1 is a perspective view schematically showing the general structure of the coating agent test apparatus in the first embodiment of the present invention.

[0014] Figure 2 is a side view schematically showing the general structure of the coating agent test apparatus in the first embodiment of the present invention.

[0015] Figure 3 is a flowchart showing the performance test sequence of the coating agent.

[0016] Figure 4 is a schematic view for explaining each process of the performance test sequence of the coating agent.

[0017] Figure 5 is a schematic view for explaining each process of the performance test sequence of the coating agent.

[0018] Figure 6 is a schematic view for explaining each process of the performance test sequence of the coating agent.

[0019] Figure 7 is a schematic view for explaining each process of the performance test sequence of the coating agent.

[0020] Figure 8 is a schematic view for explaining each process of the performance test sequence of the coating agent.

[0021] Figure 9 is a top view schematically showing the connection state of the coating agent test apparatus and the motor.

[0022] Figure 10 is a side view schematically showing the connection state of the coating agent test apparatus and the motor.

[0023] Figure 11 is a top view for explaining each process of the positioning sequence of the cylindrical block.

[0024] Figure 12 is a top view for explaining each process of the positioning sequence of the cylindrical block.

[0025] Figure 13 is a top view for explaining each process of the positioning sequence of the cylindrical block.

[0026] Figure 14 is a perspective view of the periphery of the connecting portion in a state where the cylindrical block is positioned by the cylindrical block positioning member.

[0027] Figure 15It is a top view of each process for explaining the positioning order of the cylindrical block. Detailed implementation mode

[0028] A. Implementation mode:

[0029] A1. Structure of the mold release agent test device 101:

[0030] Refer to Figures 1 to 15 , and explain the mold release agent test device 101 in the first implementation mode of the present invention. In the die-casting method, in order to prevent sintering of the mold due to molten metal and facilitate detachment from the mold after product molding, a mold release agent (also called a demolding agent or lubricant) is pre-coated on the inner surface of the mold. The mold release agent test device 101 in the first implementation mode is used to study the performance test (hereinafter, also simply referred to as "performance test") of the mold release agent, such as the mold adhesion, strength, and whether the demolding resistance is appropriate when the mold is repeatedly used. The demolding resistance is the force remaining when the molded casting (hereinafter, called the molded product) adheres to the mold. The smaller the demolding resistance, the easier it is to demold the molded product. In order to stably remove the molded product from the mold, it is necessary to know how much force the demolding resistance is.

[0031] First, briefly explain the outline of the performance test in the first implementation mode and the metal block used in the test. In the performance test of the first implementation mode, the mold release agent to be tested is coated on the surface of the plate-shaped block 40, and the cylindrical block 50 (refer to Figure 5 ) is placed on the plate-shaped block 40 in a manner that blocks one end of the cylindrical block 50. After the molten metal flows into the cylindrical block 50 and solidifies, a pulling or pushing force is applied to the cylindrical block 50, thereby testing the performance of the mold release agent. The detailed operation of the mold release agent test device 101 will be described later together with the detailed order of the performance test.

[0032] This performance test is carried out in a state where the cylindrical block 50 is placed at a predetermined position (hereinafter, also called the "setting position") on the plate-shaped block 40. In addition, the plate-shaped block 40 is a flat plate made of a metal material and is equivalent to the "metal block". The cylindrical block 50 is a cylindrical body made of a metal material and is equivalent to the "metal mold frame".

[0033] Refer to Figure 14 , and briefly explain the structure of the cylindrical block 50. Figure 14 It is a perspective view of the periphery of the connecting portion 52 in a state where the cylindrical block 50 is positioned on the plate-shaped block 40 by the cylindrical block positioning member 30. As Figure 14As shown, the cylindrical block 50 has a cylindrical frame portion 51 and a connecting portion 52. The connecting portion 52 is integrally provided with the frame portion 51 so as to protrude radially outward from the outer periphery of the frame portion 51. The connecting portion 52 is composed of a cylindrical portion 53 and an annular hook portion 54. The cylindrical portion 53 is provided so as to protrude radially outward from the frame portion 51 with its axial direction being the same as the radial direction of the frame portion 51. The annular hook portion 54 further protrudes radially outward from the cylindrical portion 53.

[0034] Figure 1 FIG. 4 is a perspective view showing a schematic structure of the coating agent testing device 101 in the first embodiment of the present invention. Figure 2 FIG. 6 is a side view showing a schematic structure of the coating agent testing device 101 in the first embodiment of the present invention, and shows a state in which a cylindrical block positioning member 30 described later is in an initial position (=retracted position) as a predetermined position. In Figure 1 , Figure 2 , a plate-like block 40 placed on the coating agent testing device 101 during the test is also shown.

[0035] As Figure 1 , 2 shown, the coating agent testing device 101 includes a plate-like block setting portion 10 and a cylindrical block positioning mechanism portion 20. Hereinafter, the forward direction of an operation handle 21 and the cylindrical block positioning member 30 described later, which is the left direction in Figure 2 , is set as "front", and the backward direction of the operation handle 21 and the cylindrical block positioning member 30, which is the right direction in Figure 2 , is set as "rear". In addition, the direction orthogonal to the front-rear direction is set as the left-right direction, and in Figure 2 , the back side of the paper surface is set as "right", and the front side of the paper surface is set as "left".

[0036] The plate-like block setting portion 10 has a bottom plate 11 and two locking portions 12, 13. The bottom plate 11 is a rectangular plate-like member. The front locking portion 12 is provided at the front end portion of the bottom plate 11. The rear locking portion 13 is provided at the rear end portion of the bottom plate 11. Each of the locking portions 12, 13 has the same shape and is provided facing each other in the front-rear direction. Each of the locking portions 12, 13 is composed of a plate-like upright portion 14 and a horizontal portion 15, and has an L-shaped configuration when viewed from the side. The upright portion 14 is fixed to the bottom plate 11 and stands upright vertically from the bottom plate 11. The horizontal portion 15 is connected to the upper end of the upright portion 14 and extends in the horizontal direction. The horizontal portion 15 of the front locking portion 12 extends rearward. The horizontal portion 15 of the rear locking portion 13 extends forward.

[0037] Regarding the height from the upper surface of the bottom plate 11 to the lower surface of each horizontal portion 15, it is slightly larger than the thickness of the plate-shaped block 40, such that the plate-shaped block 40 can be inserted between the upper surface of the bottom plate 11 and the lower surface of each horizontal portion 15. The upward movement of the plate-shaped block 40 is restricted by the two locking portions 12 and 13. That is, the locking portions 12 and 13 function to prevent the plate-shaped block 40 from floating upward. The locking portions 12 and 13 correspond to the "movement restricting portion".

[0038] The cylindrical block positioning mechanism portion 20 includes an operation handle 21, a locking handle 22, a linear bushing 23, a linear shaft 24, two side rails 25, and a cylindrical block positioning member 30 (hereinafter, also simply referred to as the "positioning member 30").

[0039] The linear bushing 23 is in the shape of a rectangular parallelepiped and is set at a prescribed height by the feet 26. The linear bushing 23 guides the linear motion portion of the linear shaft 24 using rolling through a built-in ball bearing (not shown). The linear shaft 24 and the linear bushing 23 constitute a known linear guiding mechanism. The linear shaft 24 can perform linear motion in the front-rear direction as the horizontal direction. The linear shaft 24 and the linear bushing 23 correspond to the "movement mechanism portion".

[0040] The operation handle 21 is connected to the rear end of the linear shaft 24 via a connecting member 27. The operation handle 21 is a rod-shaped member that stands upright upward in the vertical direction from the connecting member 27. The operator holds the operation handle 21 and operates the operation handle 21 in the front-rear direction, whereby the linear shaft 24 and the positioning member 30 can be advanced and retracted in the horizontal direction.

[0041] The locking handle 22 is a handle for locking and unlocking the linear motion of the linear shaft 24 in the front-rear direction. The locking handle 22 is a screw that forms a known screw mounting locking mechanism provided inside the linear bushing 23. By tightening the locking handle 22 as a screw, the linear shaft 24 is clamped between the inner side of a mounting member (not shown) provided inside the linear bushing 23 and the end face of the locking handle 22, thereby locking the motion of the linear shaft 24. That is, by tightening the locking handle 22, the linear shaft 24 becomes in a locked state where it cannot perform linear motion, and by loosening the locking handle 22, the linear shaft 24 becomes in an unlocked state where it can perform linear motion.

[0042] The positioning member 30 is integrally provided at the front end of the linear shaft 24 via a fixing member 28. The positioning member 30 is a plate-shaped member. At approximately the middle in the left-right direction at the front end of the positioning member 30, a recess 31 having a semicircular shape in plan view is formed by cutting backward from the front end of the plate-shaped member. The inner peripheral surface 32 of the recess 31 is shaped to be able to contact approximately half of the entire circumference of the outer peripheral surface of the frame portion 51 of the cylindrical block 50 from the outside of the frame portion 51, and is shaped along the outer peripheral shape of the frame portion 51 of the cylindrical block 50 (refer to Figure 5)。The inner peripheral surface 32 of the concave portion 31 corresponds to a "frame contact portion" that positions the frame portion 51 of the cylindrical block 50 in a predetermined position.

[0043] The front right end portion 33 of the positioning member 30 has a curved surface 34 that gently curves in the vertical direction and has an approximately quarter-circular shape when viewed from the side. This curved surface shape becomes a shape that follows a part of the outer peripheral surface of the connecting portion 52 (cylindrical portion 53) of the cylindrical block 50 (see Figure 14 ). By coming into circumferential contact with the connecting portion 52, the curved surface 34 restricts the relative rotation of the frame portion 51 with respect to the plate-like block 40. The curved surface 34 corresponds to a "connecting contact portion" that positions the connecting portion 52 in a predetermined position. In addition, the positioning member 30 corresponds to a "die frame positioning member", a "frame positioning portion", and a "connecting positioning portion".

[0044] Each side rail 25 is arranged on the left and right sides of the linear axis 24 and extends in the front-rear direction. In each side rail 25, its front end is connected to the rear end of the positioning member 30, and its rear end is connected to the connecting member 27. Each side rail 25 is called a reinforcing member and reinforces the plate-like positioning member 30 so as to stably maintain it in a horizontal state.

[0045] A2. Test sequence based on the die coating agent testing device 101:

[0046] Hereinafter, with reference to Figures 3 to 8 , the test sequence of the die coating agent using the above die coating agent testing device 101 will be described. Figure 3 is a flowchart showing the performance test sequence of the die coating agent. Figures 4 to 8 is a schematic diagram for explaining each process of the performance test steps of the die coating agent. As Figure 3 shown, first, a die casting coating agent diluted to a specified concentration is applied to the upper surface of the plate-like block 40 by a specified coating method (process S1). As the die casting coating agent, for example, a release agent that is mainly used in high-pressure die casting and is a liquid, a coating agent that is mainly used in low-pressure die casting and is a non-liquid, a coating agent obtained by stirring water, aggregate, water glass, etc. In addition, as the coating method, a method of simply applying the die casting coating agent using a hose, a method of forming a foam and applying it, etc., which are the coating methods of the die coating agent used in actual die casting.

[0047] Next, the plate-like block 40 coated with the die coating agent is set on the bottom plate 11 of the die coating agent testing device 101 (process S2). Figure 4 is a diagram schematically showing the process of setting the plate-like block 40 in each process of the test sequence. As Figure 4As shown, between the upper surface of the bottom plate 11 and the lower surfaces of the horizontal portions 15 of the locking portions 12 and 13 provided at the front and rear of the bottom plate 11, a plate-shaped block 40 is provided in a manner of being inserted from the left to the right in the horizontal direction as indicated by arrow A2. At this time, the plate-shaped block 40 comes into contact with the locking blocks 16 provided at the front and rear ends of the bottom plate 11 and is set at a specified position.

[0048] Next, a cylindrical block 50 is set on the plate-shaped block 40 (process S3). Figure 5 It is a diagram schematically showing the process of setting the cylindrical block 50 on the plate-shaped block 40 in each process of the test sequence. As Figure 5 shown, in this process S3, the cylindrical block 50 is placed on the plate-shaped block 40 in a manner of blocking the lower end portion of the cylindrical block 50 on the upper surface of the plate-shaped block 40. At this time, through the positioning function of the positioning member 30, the cylindrical block 50 is placed at a predetermined setting position. In addition, details of the positioning operation of the coating agent testing device 101 in this process S3 will be described later.

[0049] After placing the cylindrical block 50 on the plate-shaped block 40, molten aluminum metal is poured into the cylinder interior of the cylindrical block 50 (process S4). Figure 6 It is a diagram schematically showing the process of pouring molten aluminum metal in each process of the test sequence. In process S4, as Figure 6 shown, molten aluminum metal is poured into the cylinder interior of the cylindrical block 50 from above as indicated by arrow A3.

[0050] After casting the molten aluminum metal, it is left at room temperature until solidification is confirmed, and the molten aluminum metal solidifies. After the molten aluminum metal solidifies, a heavy object 61 is placed (process S5). Figure 7 It is a diagram schematically showing the process of placing the heavy object 61 in each process of the test sequence. In process S5, as Figure 7 shown, on the solidified aluminum casting 64 and the cylindrical block 50, the heavy object 61 is placed from above as indicated by arrow A4.

[0051] Next, in a state where the heavy object 61 is placed, the connecting portion 52 is pulled by the motor 62 (process S6). Figure 8 It is a diagram schematically showing the process of pulling the cylindrical block 50 by the motor 62 in each process of the test sequence. As Figure 8As shown, the motor 62 hangs the end of the connecting member 63 connected to the motor 62 from above on the circular hook portion 54 of the connecting portion 52, thereby connecting to the cylindrical block 50 from the right. The motor 62 corresponds to the "driving portion" that applies a force to the cylindrical block 50 serving as a mold frame. The motor 62 applies a pulling force in the right direction to the cylindrical block 50 via a crank mechanism (not shown). In addition, at this time, the plate-shaped block 40 is fixed by the locking block 16 so as not to move in the pulling direction (right), so the pulling force acts in a manner of sliding from the surface of the plate-shaped block 40 to the right with respect to the cylindrical block 50. In addition, since the connecting member 63 is a cylindrical member and not a chain-like chain or the like, no flexure or distortion occurs at the connecting portion between the motor 62 and the cylindrical block 50, and the driving force of the motor 62 can be stably transmitted to the cylindrical block 50.

[0052] Figure 9 is a plan view schematically showing the connection state between the mold coating agent testing device 101 and the motor 62 in the process S6, Figure 10 is a side view schematically showing the connection state between the mold coating agent testing device 101 and the motor 62 in the process S6. As Figure 9 shown, the imaginary line C formed by extending the connecting member 63 in the horizontally extending direction passes through the central axes of the connecting portion 52 and the frame portion 51 in the plan view. That is, the frame portion 51, the connecting portion 52, and the connecting member 63 are arranged in the plan view and the side view in such a way that the imaginary line C is aligned in a straight line without inclination. In other words, during positioning, the position of the connecting portion 52 relative to the motor 62 is adjusted so that the imaginary line C becomes a straight line, and in addition, the predetermined installation positions of the connecting portion 52 and the frame portion 51 on the plate-shaped block 40 are adjusted.

[0053] Refer again to Figure 3 . As described above, the cylindrical block 50 is pulled by the drive of the motor 62, and at the same time, the movement of the cylindrical block 50 is observed, and the load when the cylindrical block 50 and the aluminum casting 64 move on the surface of the plate-shaped block 40 is measured (process S7). This load corresponds to the demolding resistance. Then, the cylindrical block 50 and the aluminum casting 64 are removed from the plate-shaped block 40, and the film thickness of the mold coating agent on the surface of the plate-shaped block 40 is measured (process S8). If the film thickness measured at this time does not change from the initial film thickness after process S1, it can be determined that the mold coating agent has not been worn.

[0054] The processes S2 to S8 described above are repeated multiple times (for example, 5 times), and the performance such as the demolding resistance and the ease of wear is finally determined based on multiple data. Regarding the ease of wear evaluated by the film thickness, in other words, it can be called the adhesion of the mold coating agent to the mold or the strength when the mold is repeatedly used.

[0055] A3. Positioning sequence of the cylindrical block 50 based on the mold coating agent testing device 101:

[0056] Next, with reference to Figures 11 to 15 , the details of the positioning operation of the coating agent testing device 101 in the above-mentioned process S3 of setting the cylindrical block 50 on the plate-shaped block 40 will be described. Figures 11 to 13 , Figure 15 is a top view of each process for explaining the positioning sequence of the cylindrical block 50. Figure 11 represents the state where the positioning member 30 is in the initial position, corresponding to the figure shown in Figure 2 . Figure 12 represents the state after the positioning member 30 has advanced to the predetermined setting position, corresponding to the figure shown in Figure 1 .

[0057] When the operator places the cylindrical block 50 on the plate-shaped block 40, the operator first releases the locking handle 22 to unlock the positioning member 30 (linear shaft 24). Then, in a state to become Figures 11 to 12 , the operation handle 21 is operated in the forward direction shown by the arrow A5 in Figure 11 , and the positioning member 30 is horizontally advanced to the most forward position via the linear shaft 24. When the positioning member 30 reaches the most forward position, the front surface of the connecting member 27 comes into contact with the rear surface of the linear bushing 23. In addition, the positions, sizes, etc. of the respective components in the plate-shaped block setting portion and the cylindrical block positioning mechanism portion 20 are preset so that the position when the positioning member 30 moves to the most forward position coincides with the above-mentioned setting position. After advancing the positioning member 30 to the setting position, the locking handle 22 is tightened to lock the positioning member 30 (linear shaft 24).

[0058] Figure 13 represents the state where the cylindrical block 50 is positioned by the positioning member 30. As shown in Figure 13 , next, the operator places the cylindrical block 50 on the plate-shaped block 40. At this time, the frame portion 51 of the cylindrical block 50 is set along the inner peripheral surface 32 of the concave portion 31 of the positioning member 30.

[0059] Figure 14 is a perspective view schematically showing the periphery of the connecting portion 52 in the state where the cylindrical block 50 is positioned by the positioning member 30. The frame portion 51 is set along the inner peripheral surface 32 and in a manner such that the curved surface 34 of the positioning member 30 is closely attached to the side surface of the connecting portion 52 (cylindrical portion 53) from the front side with respect to the connecting portion 52. That is, the cylindrical block 50 may be set as long as the frame portion 51 is located within the concave portion 31 of the positioning member 30 and the connecting portion 52 is located on the curved surface 34, and the operator can place the cylindrical block 50 while visually confirming the overall setting position of the cylindrical block 50. Therefore, the cylindrical block 50 can be easily set so that the frame portion 51 and the connecting portion 52 are located at the required setting positions.

[0060] Then, the operator releases the locking handle 22 again to unlock the positioning member 30 (linear shaft 24).Figure 15 This is a view showing the state in which the positioning member 30 is retracted after the cylindrical block 50 is placed. In such a manner as to achieve the state of Figures 13 to 15 , the operator operates the operation handle 21 in the rearward direction shown by the arrow A6 in Figure 15 , and the positioning member 30 is horizontally retracted to the initial position via the linear shaft 24. Even if the positioning member 30 is retracted, the cylindrical block 50 is maintained at the positioned position due to its own weight.

[0061] (1) The coating agent testing device 101 according to the above-described embodiment includes a frame positioning portion (positioning member 30) and a connection positioning portion (positioning member 30), and the entire cylindrical block 50 can be set in such a manner that both the frame portion 51 and the connection portion 52 are located at predetermined setting positions on the plate-shaped block 40.

[0062] As a result, as shown in Figure 9 , a virtual line C formed by extending the connecting member 63 in the horizontally extending direction passes through the central axes of the connecting portion 52 and the frame portion 51 in a top view. For example, if the connecting portion 52 deviates from the virtual line C in a top view, an unintended moment is generated during pulling, and accurate measurement results may not be obtained. However, in the above-described first embodiment, when a pulling or pushing force is applied to the cylindrical block 50, the position and direction of the applied force can be accurately and fixed in such a manner that they become specified positions and directions regardless of the operator's proficiency, so that no unintended moment is generated. In particular, when evaluating by repeatedly performing tests multiple times, since errors in each measurement are suppressed, the evaluation accuracy can be improved.

[0063] (2) In the coating agent testing device 101 of the above-described embodiment, the positioning member 30 integrally has the functions of both the frame positioning portion and the connection positioning portion. Therefore, the device structure can be made simple and miniaturized.

[0064] (3) In the coating agent testing device 101 of the above-described embodiment, the positioning member 30 can move in the horizontal direction relative to the plate-shaped block 40 provided in the plate-shaped block setting portion 10. Therefore, after the cylindrical block 50 is positioned and arranged on the plate-shaped block 40, the positioning member 30 can be moved away from the plate-shaped block setting portion 10. Thus, when a force is applied to the cylindrical block 50, interference between the positioning member 30 and the motor 62 and the connecting member 63 can be suppressed, and the operability can be improved.

[0065] (4) The coating agent testing device 101 of the above-described embodiment has locking portions 12 and 13 at the front and rear ends of the bottom plate 11, which restrict the upward movement of the plate-shaped block 40 toward the cylindrical block 50 side. Therefore, when a force is applied to the cylindrical block 50, for example, it is possible to suppress the plate-shaped block 40 from floating up with the cylindrical block 50 sticking to the plate-shaped block 40 due to a large demolding resistance.

[0066] B. Other embodiments:

[0067] (B1) In the mold coating agent test device 101 of the first embodiment, the semi-circular recess 31 is formed at the front end of the positioning member 30. However, if the frame portion 51 can be positioned by making at least a part of the outer peripheral surface of the cylindrical block 50 contact the inner peripheral surface 32 of the recess 31 from the outside, its shape may not be semi-circular. For example, it may be in the shape of a 1 / 4 circular arc, or may be a shape divided into a plurality of circular arcs.

[0068] (B2) In the above first embodiment, the cylindrical block 50 as a cylinder is exemplified as the mold frame, but it is not limited to a cylinder, and may also be other rectangular cylinders. In addition, the shape of the positioning member 30 may be appropriately corresponding to the shape of the outer peripheral surface of the cylindrical block 50.

[0069] (B3) In the mold coating agent test device 101 of the above first embodiment, the positioning member 30 is provided in the direction in which the plate-like plane extends in the horizontal direction. That is, the method of clamping the cylindrical block 50 from the horizontal direction is adopted. However, for example, the method of clamping the outer peripheral surface of the cylindrical block 50 from above the cylindrical block 50 may also be adopted.

[0070] (B4) In the above first embodiment, the case of applying a pulling force to the cylindrical block 50 is described, but a pushing force may also be applied.

[0071] (B5) In the mold coating agent test device 101 of the above first embodiment, the positioning member 30 integrally having a frame positioning portion and a connection positioning portion is provided. However, a member having the function of the frame positioning portion and a member having the function of the connection positioning portion separately from the member may also be provided.

[0072] The present invention is not limited to the above embodiments, and can be implemented by various structures within the scope not departing from its gist. For example, regarding the technical features in each embodiment corresponding to the technical features in each mode described in the summary of the invention, in order to solve part or all of the above problems, or to achieve part or all of the above effects, appropriate substitution or combination can be made. In addition, if the technical features are not described as essential contents in this specification, they can be appropriately deleted.

Claims

1. A coating agent testing device, which coats a coating agent on the surface of a metal block, places a cylindrical metal mold frame on the metal block in a manner that blocks one end of the metal mold frame, and after allowing molten metal to flow into the metal mold frame and solidify, applies a pulling or pushing force to the metal mold frame to separate the metal mold frame from the metal block, thereby testing the performance of the coating agent. The coating agent testing device includes: a frame positioning portion that positions the frame portion of the metal mold frame at a predetermined position when the metal mold frame is placed on the metal block; and a connection positioning portion that positions the connection portion, which is a portion provided on the frame portion and is connected to a driving portion that applies the force, at a predetermined position when the metal mold frame is placed on the metal block. Among them, The frame positioning portion has a frame contact portion that contacts a part of the entire circumference of the outer peripheral surface of the frame portion from the outside of the frame portion and has a shape along the shape of the frame portion. The connection portion is formed to protrude from the outer peripheral surface of the frame portion. The end portion of the connection positioning portion has a curved surface that restricts the relative rotation of the frame portion with respect to the metal block by contacting the connection portion in the circumferential direction, and the shape of the curved surface becomes a shape along a part of the outer peripheral surface of the connection portion.

2. The coating agent testing device according to claim 1, wherein It is equipped with a mold frame positioning member that has the frame positioning portion and the connection positioning portion.

3. The coating agent testing device according to claim 2, characterized in that It also has a moving mechanism portion that enables the mold frame positioning member to move relative to the metal block.

4. The coating agent testing device according to any one of claims 1 to 3, characterized in that, It also has a movement restricting portion that faces the surface and restricts the metal block from moving in the direction toward the metal mold frame side.

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