Scraping device

Abstract

The present invention provides a scraping device, which relates to the technical field of preparing test samples. The scraping device includes a scraping assembly, a first drive module, a waste collection assembly and a second drive module; the scraping assembly includes a scraping ruler, which is transmission-connected to the first drive module, and the scraping ruler can scrape the material on the upper surface of the test mold under the drive of the first drive module; the waste collection assembly includes a receiving member, which is transmission-connected to the second drive module; the receiving member is provided with an avoidance hole for being sleeved on the outer peripheral surface of the test mold, and is used to receive the material scraped off by the test mold. The technical problem that the manual scraping of cement mortar in the preparation process of cement mortar forming samples in the prior art is not applicable to the automated operation in actual production is solved.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of test samples, in particular to a scraping device. Background Art

[0002] In the process of preparing cement mortar molding samples, the traditional standard method usually removes the mold sleeve from the test mold after compaction and takes the test mold off the compaction table. At this time, there will be a layer of mortar on the upper surface of the test mold that is higher than the upper surface of the test mold. Before proceeding to the next step, the mortar above the upper surface of the test mold needs to be scraped off, but the molding sample itself cannot be damaged.

[0003] In the prior art, the mortar that is higher than the upper surface of the test mold is generally scraped off manually. Specifically, a scraper is placed at an angle of 90° on one end of the upper surface of the test mold, and slowly moved toward the other end along the length direction of the test mold in a horizontal sawing motion, and the mortar that is higher than the upper surface of the test mold is scraped off once or multiple times, and then the upper surface of the test mold is smoothed with the same scraper in a nearly horizontal state.

[0004] However, the aforementioned operation method has high requirements on the skills of the operator, and the operations of the operators are different, and cannot be applied to automated operations in actual production. Summary of the invention

[0005] The purpose of the present invention is to provide a scraping device to alleviate the technical problem that in the prior art, during the preparation process of cement mortar molding samples, the mortar is manually scraped off, which is not suitable for automated operations in actual production.

[0006] In a first aspect, an embodiment provides a scraping device, comprising: a scraping component, a first driving module, a waste collection component and a second driving module.

[0007] The scraping assembly includes a scraping ruler, which is transmission-connected to the first driving module. Driven by the first driving module, the scraping ruler can scrape the material on the upper surface of the test mold.

[0008] The waste collection assembly includes a receiving member, which is transmission-connected to the second driving module; the receiving member is provided with an avoidance hole for being sleeved on the outer peripheral surface of the test mold and for receiving the material scraped off by the test mold.

[0009] In an optional embodiment, the first driving module includes an X-direction module for driving the scraper to move along the X direction, a first Y-direction module for driving the scraper to move along the Y direction, and a first Z-direction module for driving the scraper to move along the Z direction.

[0010] The scraper is connected to the output end of the first Z-direction module.

[0011] In an optional embodiment, the scraper ruler is hinged to the output end of the first Z-direction module, and the scraping assembly further includes an adjustment assembly for adjusting the angle between the scraper ruler and the XY plane.

[0012] In an optional embodiment, the adjustment assembly includes a linear drive element, a first connecting rod and a second connecting rod, the linear drive element is installed at the output end of the first Z-axis module, the first connecting rod is hinged to the second connecting rod, the free end of the first connecting rod is transmission connected to the linear drive element, and the free end of the second connecting rod is hinged to the scraper.

[0013] The angle between the scraper and the XY plane ranges from 0 to 90 degrees or from 90 to 180 degrees.

[0014] In an optional embodiment, the adjustment assembly also includes a first clamping plate and a second clamping plate for clamping the scraper, the first clamping plate and the second clamping plate each include a first end and a second end arranged opposite to each other, the first end of the first clamping plate or the first end of the second clamping plate is hinged to the output end of the first Z-direction module, and the end of the scraper for contacting the material protrudes from the second end of the first clamping plate and the second end of the second clamping plate.

[0015] The free end of the second connecting rod is hinged to the plate surface of the first clamping plate or the plate surface of the second clamping plate.

[0016] In an optional embodiment, the receiving member adopts a plate-shaped structure, and the upper surface of the receiving member can be lower than the plane where the upper edge of the test mold is located.

[0017] In an optional embodiment, the second driving module includes a second Y-direction module for driving the receiving member to move along the Y direction and a second Z-direction module for driving the receiving member to move along the Z direction.

[0018] The receiving member is connected to the output end of the second Z-direction module.

[0019] In an optional embodiment, the second driving module further comprises a rotation driving element, which is drivingly connected to the receiving member and is used for tipping the waste on the receiving member into a receiving container.

[0020] In an optional embodiment, the rotary drive element includes a rotary cylinder, a cylinder body of the rotary cylinder is fixedly connected to an output end of the second Y-direction module, and a piston rod of the rotary cylinder is connected to the second Z-direction module.

[0021] In an optional embodiment, a conveying platform for carrying and transferring the trial mold is also included.

[0022] The conveying platform includes a lead screw, a nut and a motor. The lead screw is threadedly connected to the nut, the motor is drivingly connected to the lead screw, and the nut is connected to a loading platform for placing a test mold.

[0023] Beneficial effects:

[0024] The scraping device provided by the present invention includes a scraping component, a first driving module, a waste collection component and a second driving module; wherein the scraping ruler is connected to the first driving module in a transmission manner, and the scraping ruler can scrape the material on the upper surface of the test mold under the drive of the first driving module, that is, it can scrape the material above the upper surface of the test mold, and replace the traditional manual scraping method with the first driving module; furthermore, the waste collection component includes a receiving member, and the receiving member is connected to the second driving module in a transmission manner. Since the receiving member is provided with an avoidance hole for sleeved on the outer peripheral surface of the test mold, therefore, under the drive of the second driving module, the receiving member can be sleeved on the outer peripheral surface of the test mold through the avoidance hole, so that the material scraped from the test mold falls on the receiving member. As can be seen from the above, the scraping device can replace the traditional manual scraping method, and can receive the scraped material to complete the automated scraping operation, which is conducive to the preparation of test samples in actual production; in addition, the samples prepared by the scraping device will not be limited by the operating level of the operator, so the obtained samples can tend to be consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 One of the structural schematic diagrams of the scraping device provided in the embodiment of the present invention;

[0027] Figure 2 A top view of a scraping device provided in an embodiment of the present invention;

[0028] Figure 3 A side view of a scraping device provided by an embodiment of the present invention without showing a portion of the bracket;

[0029] Figure 4 for Figure 3 A local enlarged schematic diagram of point A shown;

[0030] Figure 5 A second structural schematic diagram of a scraping device provided in an embodiment of the present invention;

[0031] Figure 6The third structural schematic diagram of the scraping device provided in the embodiment of the present invention, wherein a workbench is shown.

[0032] icon:

[0033] 10- Trial mold;

[0034] 100 - scraping assembly; 110 - scraping ruler; 120 - linear drive element; 130 - first connecting rod; 140 - second connecting rod; 150 - first clamping plate; 160 - second clamping plate;

[0035] 210 - X-direction module; 220 - first Y-direction module; 230 - first Z-direction module;

[0036] 300-waste collection assembly; 310-receiving piece; 311-avoidance hole;

[0037] 410 - second Y-direction module; 420 - second Z-direction module; 430 - rotary cylinder;

[0038] 500-Stand;

[0039] 600-transport platform; 610-screw; 620-motor; 630-carrying platform;

[0040] 700 - Workbench. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0048] Example

[0049] This embodiment provides a scraping device, combined with Figure 1 and Figure 2 The scraping device includes a scraping assembly 100, a first driving module, a waste collecting assembly 300 and a second driving module; the scraping assembly 100 includes a scraping ruler 110, which is transmission-connected to the first driving module, and the scraping ruler 110 can scrape the material on the upper surface of the test mold 10 driven by the first driving module; the waste collecting assembly 300 includes a receiving member 310, which is transmission-connected to the second driving module; the receiving member 310 is provided with an avoidance hole 311 for being sleeved on the outer peripheral surface of the test mold 10, so as to receive the material scraped off by the test mold 10.

[0050] The scraping device provided in this embodiment includes a scraping assembly 100, a first driving module, a waste collection assembly 300 and a second driving module; wherein, the scraper 110 is transmission-connected to the first driving module, and the scraper 110 can scrape off the material on the upper surface of the test mold 10 under the drive of the first driving module, that is, it can scrape off the material on the upper surface higher than the test mold 10, replacing the traditional manual scraping method of the material by the first driving module; furthermore, the waste collection assembly 300 includes a receiving member 310, and the receiving member 310 is transmission-connected to the second driving module. Since the receiving member 310 is provided with an avoidance hole 311 for being sleeved on the outer peripheral surface of the test mold 10, therefore, under the drive of the second driving module, the receiving member 310 can be sleeved on the outer peripheral surface of the test mold through the avoidance hole 311, so that the material scraped off from the test mold 10 falls on the receiving member 310. From the foregoing, it can be seen that the scraping device can replace the traditional method of manually scraping materials, and can hold the scraped materials to complete the automated scraping operation, which is beneficial to the preparation of test samples in actual production; in addition, the samples prepared using the scraping device will not be limited by the operator's operating level, and thus the obtained samples can tend to be consistent.

[0051] It should be noted that the specific structure of the "scraper" mentioned above is not limited, that is, it is not limited to the structural form shown in the accompanying drawings. Of course, as long as the structural form can meet the scraping operation, it is within the protection scope of the present invention.

[0052] The first driving module in this embodiment can be in various forms. Figure 1 The first driving module includes an X-direction module 210 for driving the scraper 110 to move along the X direction, a first Y-direction module 220 for driving the scraper 110 to move along the Y direction, and a first Z-direction module 230 for driving the scraper 110 to move along the Z direction; the scraper 110 is connected to the output end of the first Z-direction module 230.

[0053] Optionally, the first Y-axis module 220 is installed on the bracket 500 , the X-axis module 210 is slidably connected to the first Y-axis module 220 , and the first Z-axis module 230 is slidably connected to the X-axis module 210 .

[0054] It should be noted that the installation method of the X-axis module 210, the first Y-axis module 220, the first Z-axis module 230 and the four is not limited to the above method, as long as the structural form can meet the above movement requirements, it is within the protection scope of the present invention.

[0055] Considering the installation stability of the first drive module, refer to Figure 1 The first Y-axis modules 220 are provided in two groups, and the X-axis modules 210 are slidably connected to the two groups of the first Y-axis modules 220. Meanwhile, the brackets 500 are provided in a plurality, and can be specifically provided as required.

[0056] Optionally, the X-axis module 210, the first Y-axis module 220 and the first Z-axis module 230 may use a synchronous belt module and a screw module. It should be noted that the synchronous belt module and the screw module are well known in the art, and this embodiment does not improve them, and will not be described in detail.

[0057] Further, combined with Figure 3 and Figure 4 The scraper ruler 110 is hinged to the output end of the first Z-axis module 230, and the scraper assembly 100 also includes an adjustment assembly for adjusting the angle between the scraper ruler 110 and the XY plane (ie, the plane formed by the X-axis and the Y-axis, also referred to as the horizontal plane).

[0058] The adjustment component can take a variety of forms. In some embodiments, refer to Figure 4 The adjustment component includes a linear drive element 120, a first connecting rod 130 and a second connecting rod 140. The linear drive element 120 is installed at the output end of the first Z-axis module 230. The first connecting rod 130 and the second connecting rod 140 are hinged. The free end of the first connecting rod 130 is transmission-connected to the linear drive element 120, and the free end of the second connecting rod 140 is hinged to the scraper 110. The angle range between the scraper 110 and the XY plane is 0 to 90° or 90 to 180°.

[0059] It should be noted that, by setting the adjustment component, the scraper 110 can be set in a vertical state or in an inclined state in the initial state of the adjustment component. Figure 4 , Figure 4 As shown, the scraper ruler 110 is arranged in an inclined state. At this time, the linear driving element 120 is driven to rotate the scraper ruler 110 counterclockwise by a certain angle, so that the scraper ruler 110 is arranged in a vertical state.

[0060] It should also be noted that when the scraper 110 is set in an inclined state, there are two angles between the scraper 110 and the XY plane, such as Figure 4 The angle between the left side of the scraper 110 and the XY plane is an acute angle, and correspondingly, the angle between the right side of the scraper 110 and the XY plane is an obtuse angle. Therefore, when the scraper 110 and the XY plane are at an angle other than 90°, the angle between the scraper 110 and the XY plane can range from 0 to 90° or 90 to 180°, which is specifically determined by the direction of the positive direction of X. In this embodiment, Figure 4 The angle of the scraper 110 shown with the XY plane is obtuse.

[0061] Optionally, the linear drive element 120 may be a linear cylinder, etc. When the linear drive element 120 is a linear cylinder, the cylinder body of the linear cylinder is connected to the output end of the first Z-axis module 230 , and the piston rod of the linear cylinder is hinged to the end of the first connecting rod 130 away from the second connecting rod 140 .

[0062] For further information, please refer to Figure 4 The adjustment assembly also includes a first clamping plate 150 and a second clamping plate 160 for clamping the scraper 110. The first clamping plate 150 and the second clamping plate 160 both include a first end and a second end that are arranged opposite to each other. The first end of the first clamping plate 150 or the first end of the second clamping plate 160 is hinged to the output end of the first Z-direction module 230, and the end of the scraper 110 that is used to contact the material protrudes from the second end of the first clamping plate 150 and the second end of the second clamping plate 160; the free end of the second connecting rod 140 is hinged to the plate surface of the first clamping plate 150 or the plate surface of the second clamping plate 160.

[0063] For example, refer to Figure 4 The first end of the first clamping plate 150 is hinged to the output end of the first Z-direction module 230 , and the free end of the second connecting rod 140 is hinged to the plate surface of the first clamping plate 150 .

[0064] Optionally, the first clamping plate 150 and the second clamping plate 160 are arranged in parallel and connected together by screws, so that the scraper 110 is clamped between the first clamping plate 150 and the second clamping plate 160 .

[0065] Further, see Figure 2 The receiving member 310 adopts a plate-shaped structure, and the upper surface of the receiving member 310 can be lower than the plane where the upper edge of the test mold 10 is located, so as to ensure that the waste scraped from the test mold 10 can fall smoothly onto the receiving member 310.

[0066] The specific structure of the first driving module has been introduced above, and the specific structure of the second driving module will be introduced next.

[0067] Reference Figure 1 The second driving module includes a second Y-direction module 410 for driving the receiving member 310 to move along the Y direction and a second Z-direction module 420 for driving the receiving member 310 to move along the Z direction; the receiving member 310 is connected to the output end of the second Z-direction module 420.

[0068] It should be noted that the second Y-direction module 410 and the second Z-direction module 420 may also adopt a synchronous belt module and a screw module.

[0069] For further information, please refer to Figure 1The second driving module also includes a rotating driving element, which is in driving connection with the receiving member 310 and is used to flip the material on the receiving member 310 into a receiving container (not shown in the drawings). Optionally, the receiving container is fixed to receive waste materials.

[0070] Optionally, the rotary drive element includes a rotary cylinder 430, the cylinder body of the rotary cylinder 430 is fixedly connected to the output end of the second Y-axis module 410, and the piston rod of the rotary cylinder 430 is connected to the second Z-axis module 420. When working, the rotary cylinder 430 drives the second Y-axis module 410 and the receiving member 310 to flip at the same time, thereby flipping the waste on the receiving member 310 into the receiving container.

[0071] Based on the above embodiments, Figure 1 and Figure 5 The scraping device also includes a conveying platform 600 for carrying and transferring the test mold; the conveying platform 600 includes a screw 610, a nut and a motor 620, the screw 610 is threadedly connected to the nut, the motor 620 is transmission-connected to the screw 610, and a loading platform 630 for placing the test mold is connected to the nut.

[0072] During operation, the motor 620 rotates to drive the lead screw 610 to rotate, so that the nut drives the stage 630 to move along the axial direction of the lead screw 610 .

[0073] It should be noted that the stage 630 can be set to stay at the working position when it is in the initial position, or the stage 630 can be moved to the working position before the scraping operation. In this embodiment, the stage 630 does not stay at the working position when it is in the initial position. After the test mold 10 is grabbed onto the stage 630 by the manipulator, the motor 620 is started to move the stage 630 to the working position.

[0074] Based on the above embodiments, Figure 6 The scraping device further includes a workbench 700, wherein the bracket 500 and the conveying platform 600 are all installed on the workbench 700 for easy operation.

[0075] After the stage 630 drives the test mold 10 to move to the working position, the working process of the scraping device is as follows:

[0076] Start the second Y-axis module 410 to adjust the Y-axis position of the stage 630. After the adjustment is appropriate, start the second Z-axis module 420 to sleeve the receiving member 310 on the outer peripheral surface of the test mold 10 and ensure that the upper surface of the receiving member 310 is lower than the plane where the upper edge of the test mold 10 is located.

[0077] The X-axis module 210, the first Y-axis module 220 and the first Z-axis module 230 are started to move the scraper 110 to the working position, ensuring that the bottom end of the scraper 110 can contact the mortar on the upper surface of the test mold 10; the X-axis module 210 and the first Y-axis module 220 are started at the same time, so that the scraper 110 moves forward in a zigzag shape (the mortar above the upper surface of the test mold 10 is scraped off), so as to realize the loosening of the mortar (this is the first stage of scraping, in which the scraper 110 is in a vertical state, and a large amount of waste falls into the receiving member in this stage);

[0078] Raise the first Z-direction module 230 and return it to the starting position, and start the linear drive element 120 to make the scraper 110 tilted;

[0079] The first Z-direction module 230 is moved downward, and after the scraper 110 contacts the mortar on the upper surface of the test mold 10, the first Y-direction module 220 is started to smooth the upper surface of the test mold 10 (this is the second stage of scraping, and a small amount of waste falls onto the receiving piece in this stage);

[0080] The second Y-direction module 410 and the second Z-direction module 420 are started to move the receiving member 310 away from the trial mold 10, and then the rotary cylinder 430 is started to make the waste on the receiving member 310 fall into the receiving container.

[0081] The conveying platform 600 is started, so that the stage 630 drives the processed trial mold 10 to move to the initial position.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A scraping device, characterized in that: include: A scraping assembly (100), a first driving module, a waste collection assembly (300), and a second driving module; The scraping assembly (100) comprises a scraping ruler (110), the scraping ruler (110) being in driving connection with the first driving module, and the scraping ruler (110) being driven by the first driving module to scrape off the material on the upper surface of the test mold (10); The waste collection assembly (300) comprises a receiving member (310), the receiving member (310) being in driving connection with the second driving module; the receiving member (310) is provided with an avoidance hole (311) for being sleeved on the outer peripheral surface of the test mold (10) and for receiving materials scraped off by the test mold (10); The scraper (110) is hingedly connected to the output end of the first Z-direction module (230) of the first driving module; The scraping assembly (100) further comprises an adjustment assembly for adjusting the angle between the scraping ruler (110) and the XY plane, the adjustment assembly comprising a linear drive element (120), a first connecting rod (130) and a second connecting rod (140), the linear drive element (120) being mounted on the output end of the first Z-axis module (230), the first connecting rod (130) being hinged to the second connecting rod (140), the free end of the first connecting rod (130) being transmission-connected to the linear drive element (120), and the free end of the second connecting rod (140) being hinged to the scraping ruler (110); The second driving module comprises a second Y-direction module (410) for driving the receiving member (310) to move along the Y direction and a second Z-direction module (420) for driving the receiving member (310) to move along the Z direction, and the receiving member (310) is connected to an output end of the second Z-direction module (420).

2. The scraping device according to claim 1, characterized in that: The first driving module comprises an X-direction module (210) for driving the scraper (110) to move along an X direction, a first Y-direction module (220) for driving the scraper (110) to move along a Y direction, and a first Z-direction module (230) for driving the scraper (110) to move along a Z direction.

3. The scraping device according to claim 2, characterized in that: The angle between the scraper (110) and the XY plane ranges from 0 to 90 degrees or from 90 to 180 degrees.

4. The scraping device according to claim 3, characterized in that: The adjustment assembly further comprises a first clamping plate (150) and a second clamping plate (160) for clamping the scraper (110); the first clamping plate (150) and the second clamping plate (160) each comprise a first end and a second end that are arranged opposite to each other; the first end of the first clamping plate (150) or the first end of the second clamping plate (160) is hinged to the output end of the first Z-direction module (230); and the end of the scraper (110) for contacting the material both protrudes from the second end of the first clamping plate (150) and the second end of the second clamping plate (160); The free end of the second connecting rod (140) is hinged to the plate surface of the first clamping plate (150) or the plate surface of the second clamping plate (160).

5. The scraping device according to claim 1, characterized in that: The receiving member (310) adopts a plate-shaped structure, and the upper surface of the receiving member (310) can be lower than the plane where the upper edge of the test mold (10) is located.

6. The scraping device according to claim 1, characterized in that: The second driving module further comprises a rotating driving element, which is drivingly connected to the receiving member (310) and is used to flip the waste on the receiving member (310) into a receiving container.

7. The scraping device according to claim 6, characterized in that: The rotary drive element comprises a rotary cylinder (430), the cylinder body of the rotary cylinder (430) being fixedly connected to the output end of the second Y-direction module (410), and the piston rod of the rotary cylinder (430) being connected to the second Z-direction module (420).

8. The scraping device according to any one of claims 1 to 7, characterized in that: It also includes a conveying platform (600) for carrying and transferring the trial mold (10); The conveying platform (600) comprises a lead screw (610), a nut and a motor (620); the lead screw (610) is threadedly connected to the nut; the motor (620) is drivingly connected to the lead screw (610); and the nut is connected to a loading platform (630) for placing a test mold (10).

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