A lithofacies grinder feeding device

Abstract

The utility model relates to petrographic grinder technical field, especially a petrographic grinder feeding device, including the vacuum chuck for installing the glass slide, and the existing technology is different, the vacuum chuck is fixed on the swing arm upper end, the swing arm lower end connects the front end of feed shaft, the rear end of feed shaft is equipped with the rocking handle, the middle part is connected with the floating plate, and the floating plate is below the sliding block and the guide rail on the base cooperation. The middle part of feed shaft is opened the fan -shaped groove, and the inside is limited the block, and the front end is screwed with the feed screw rod, and the rear end is connected to the feed knob. The design makes the grinding time to be along the grinding disc circumferential reciprocating swing, improves sample grinding uniformity and precision.

Description

Technical Field

[0001] This utility model relates to the field of rock phase grinding machine technology, and in particular to a feeding device for a rock phase grinding machine. Background Technology

[0002] A petrographic grinder is a sample preparation device specifically designed for fields such as geology, petrography, sedimentology, marine biology, and paleontology. It is primarily used to cut and grind geological samples such as rocks and minerals into thin sections for observation and analysis under a microscope. Its main function is to prepare sample sections of uniform thickness and with smooth surfaces, which is crucial for subsequent petrographic analysis, as the quality and preparation precision of the sample directly affect the accuracy and reliability of the analytical results.

[0003] However, existing petrographic grinding mills have several technical problems with their feed mechanisms: First, they typically cannot reciprocate along the circumference of the grinding disc while feeding, limiting the uniformity and density of sample grinding and thus affecting the final sample quality. Second, existing feed mechanisms often cannot completely eliminate the gaps between components, which can lead to positional deviations of the sample during grinding, thereby affecting grinding accuracy and sample surface quality. Therefore, the design and performance of existing petrographic grinding mill feed mechanisms still need improvement to meet higher standards of sample preparation. Utility Model Content

[0004] To overcome the technical problems or one of the technical problems existing in the prior art, this utility model discloses a new feeding device for a rock phase grinding mill, and the technical solution adopted is as follows: A feeding device for a petrographic grinding machine includes a vacuum chuck for mounting glass slides. Unlike existing technologies, the vacuum chuck is fixed to the upper end of a swing arm, the lower end of the swing arm is fixed to the front end of a feed shaft, a crank handle is fixed to the rear end of the feed shaft, the middle part of the feed shaft is rotatably connected to the lower center of a floating plate, and sliders are fixed to the lower part of the floating plate corresponding to the left and right sides of the feed shaft. A base is fixed to the body of the grinding machine, and two guide rails in the front-rear direction are fixed to the base. The guide rails slide with the sliders. A central screw hole is opened from the rear end of the feed shaft, and a fan-shaped groove communicating with the central screw hole is opened on the circumferential surface of the middle part of the feed shaft. A limiting block extending into the fan-shaped groove is fixed to the base. The front end of the feed screw enters the central screw hole and is screwed thereto. The front end of the feed screw abuts against the limiting block, and a feed knob is fixed to the rear end of the feed screw.

[0005] Furthermore, it also includes two tension springs installed on the left and right sides of the floating plate, with one end of the tension spring connected to the rear end of the floating plate and the other end connected to the front end of the base.

[0006] Furthermore, a groove is formed at the front end of the feed screw, and a steel ball is embedded in the groove, the steel ball abutting against the limiting block.

[0007] Furthermore, the middle part of the floating plate extends downward to form a boss. A circular hole with clearance fit with the feed shaft is opened on the boss along the front-back direction. The two ends of the circular hole are bearing mounting holes with larger diameters. A window communicating with the circular hole is opened at the lower part of the boss. The limiting block extends into the fan-shaped groove through the window. The bearing mounting holes support the outer rings of at least two deep groove bearings. The inner rings of the deep groove bearings support the feed shaft.

[0008] Furthermore, a displacement sensor probe is fixed on the floating plate, and the probe is positioned with respect to the sensing plate mounted on the base.

[0009] Furthermore, the feed knob has an indicator scale.

[0010] Furthermore, if the included angle between the left and right sides of the limiting block is defined as b, and the distance between the front and rear end faces is defined as H, and the included angle between the left and right sides of the fan-shaped groove is defined as a, and the distance between the front and rear end faces is defined as L, then a > b, L > H.

[0011] Furthermore, 90°≤a≤180°.

[0012] Furthermore, a = 90.68°, L = 30mm.

[0013] Furthermore, the swing angle of the swing arm is a – b, and the feed amount of the feed axis is LH.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are: 1. Improve grinding uniformity: The oscillation function achieved by the crank handle allows the present invention to oscillate back and forth along the circumference of the grinding disc while feeding. This design helps to achieve uniform grinding of the sample and improve the grinding accuracy of the sample.

[0015] 2. Elimination of mating gaps: The design of this utility model can reduce or eliminate the mating gaps between various components, avoid positional deviations caused by gaps, and improve grinding accuracy and sample surface quality.

[0016] 3. Enhanced structural stability: Through the design of the swing arm and feed shaft, as well as the cooperation between the floating plate and the slider, this utility model enhances the stability of the entire feeding device and ensures precise control during the grinding process.

[0017] 4. Improved ease of operation: The crank design allows the operator to easily perform swing operation, while the feed knob design allows the operator to precisely control the movement of the feed axis. The combination of the two improves the ease and flexibility of operation.

[0018] 5. Achieve precise control: The screw connection between the feed screw and the central screw hole, as well as the design of the front end abutment limit block, enable the feed device to achieve precise feed control, thereby improving the accuracy of sample preparation.

[0019] 6. Improved work efficiency: By optimizing the design of the feeding device, the sample preparation time was reduced, thus improving work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 yes Figure 1 A cross-sectional view.

[0022] Figure 3 yes Figure 1 The longitudinal sectional view.

[0023] Figure 4 yes Figure 1 A structural diagram from another perspective.

[0024] Figure 5 This is a schematic diagram of the feed shaft of this utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the floating plate of this utility model.

[0026] Figure 7 This is a schematic diagram of the structure of the limiting block of this utility model. Detailed Implementation

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "communication" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] As attached Figure 1-7 The illustrated feeding device for a petrographic grinding machine includes a vacuum chuck 1 for mounting glass slides. The vacuum chuck 1 is fixed to the upper end of a swing arm 2, and the lower end of the swing arm 2 is fixed to the front end of a feed shaft 3. A crank handle 4 is fixed to the rear end of the feed shaft 3. The middle part of the feed shaft 3 is rotatably connected to the lower center of a floating plate 5. Sliding blocks 6 are fixed to the lower part of the floating plate 5 on the left and right sides of the feed shaft 3. A base 7 is fixed to the body of the grinding machine, and two longitudinally oriented rods are fixed to the base 7. A guide rail 8 is slidably engaged with the slider 6; a fan-shaped groove 31 communicating with the central screw hole 32 is formed on the middle part of the feed shaft 3 along its circumferential surface, starting from the rear end of the feed shaft 3; a limiting block 9 extending into the fan-shaped groove 31 is fixedly connected to the base 7; the front end of the feed screw 10 enters the central screw hole 32 and is screwed thereto; the front end of the feed screw 10 abuts against the limiting block 9; and the rear end of the feed screw 10 is fixedly connected to the feed knob 11.

[0031] The feed device of the petrographic grinding mill in this embodiment is designed to allow for simultaneous oscillation during feeding. This is achieved by controlling the oscillation of the swing arm 2 and vacuum chuck 1 via the crank handle 4, and by controlling the movement of the feed screw 10 via the feed knob 11. This design improves the uniformity and accuracy of sample grinding. The oscillation and feeding are controlled by different physical components with no direct mechanical connection. This means that the oscillation of the swing arm 2 does not affect the linear movement of the feed screw 10. The guide rail 8 on the base 7 provides precise guidance for the slider 6 under the floating plate 5, ensuring that the linear movement of the floating plate 5 and the feed shaft 3 is unaffected by the oscillation of the swing arm 2.

[0032] In this embodiment, two tension springs 12 are also included, installed on the left and right sides of the floating plate 5. One end of each tension spring 12 is connected to the rear end of the floating plate 5, and the other end is connected to the front end of the base 7. The tension springs 12 can apply a forward force to the floating plate 5, which ultimately manifests as a continuous and stable contact force between the rock phase sample and the grinding disc during the grinding process. Due to the preload provided by the tension springs 12, the fit gap between the floating plate 5 and the guide rail 8 can be reduced or eliminated. This preload ensures that the sliding of the slider 6 on the guide rail 8 is smoother and more precise, reducing errors caused by gaps and improving the accuracy of the feed. During the grinding process, the tension springs 12 can absorb minor vibrations caused by changes in grinding pressure, reducing the impact of these vibrations on the feed accuracy, thereby improving the stability of the feed.

[0033] In this embodiment, a groove is formed at the front end of the feed screw, and a steel ball 13 is embedded in the groove, which abuts against the limiting block 9. The steel ball 13 reduces the contact area between the feed screw 10 and the limiting block 9. This design helps to reduce friction, so that the knob 11 requires less force to rotate the feed screw 10. Due to the reduction in friction, the torque required by the knob 11 to rotate the feed screw 10 is reduced, thereby improving rotational efficiency and making operation easier.

[0034] In this embodiment, the floating plate 5 extends downward from its center to form a boss 51. A circular hole 52, which is clearance-fitted to the feed shaft 3, is formed on the boss 51 along its front-to-back direction. Both ends of the circular hole 52 are bearing mounting holes 53 with larger diameters. A window 54, communicating with the circular hole 52, is formed at the lower part of the boss 51. The limiting block 9 extends into the fan-shaped groove 31 through the window 54. The bearing mounting holes 53 support the outer rings of at least two deep groove bearings 14, and the inner rings of the deep groove bearings 14 support the feed shaft 3. The rolling support of the deep groove bearings 14 provides a stable support structure, reduces friction, improves stability and rigidity, and facilitates maintenance and replacement, ensuring efficient and precise operation of the feed device of the petrographic grinding machine during the grinding process.

[0035] In this embodiment, a displacement sensor probe 15 is fixed on the floating plate 5, with a gap between the probe 15 and the sensing plate mounted on the base 7. This design allows the probe 15 to monitor the position change of the feed shaft 3 in real time, thereby achieving accurate measurement of the feed amount. Maintaining a certain gap between the probe 15 and the sensing plate mounted on the base 7, this non-contact measurement method avoids wear caused by direct contact, reduces errors, and improves measurement reliability. The displacement sensor probe 15 can provide real-time displacement feedback signals, which is crucial for controlling the precise position of the feed shaft 3, especially in applications requiring precise control of the grinding depth. The signal from the displacement sensor probe 15 can be integrated into an automated control system to achieve automatic control of the grinding process, improving production efficiency and reducing human error.

[0036] In another preferred embodiment, the feed knob 11 has an indicator scale. The indicator scale allows the operator to visually see the rotational position of the feed knob 11, thereby precisely controlling the movement of the feed screw 10. With the indicator scale, the operator can repeat the same knob position, ensuring consistent feed amount each time grinding, improving the repeatability and consistency of the grinding process. The indicator scale reduces reliance on operator experience and lowers operational errors caused by inaccurate human estimation. The operator can quickly adjust the knob to the desired scale position, reducing adjustment time and improving work efficiency.

[0037] If we define the included angle between the left and right sides of the limiting block 9 as b and the distance between the front and rear end faces as H, and the included angle between the left and right sides of the fan-shaped groove 31 as a and the distance between the front and rear end faces as L, then we have a > b, L > H, and 90° ≤ a ≤ 180°.

[0038] In this embodiment, a = 90.68° and L = 30 mm.

[0039] The swing angle of the swing arm 2 is a – b, and the feed amount of the feed axis 3 is LH.

[0040] The swing angle of the swing arm 2 and the feed amount of the feed shaft 3 can be precisely controlled by adjusting the geometric parameters of the limit block 9 and the sector groove 31, which can ensure that the swing angle of the swing arm 2 and the feed amount of the feed shaft 3 meet specific technical requirements, thereby optimizing the performance of the feed device of the rock phase grinding machine.

[0041] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0042] Any aspects of this utility model not described in detail are existing technology or common knowledge in the field.

Claims

1. A feeding device for a petrographic grinding mill, comprising a vacuum chuck (1) for mounting glass slides, characterized in that, The vacuum chuck (1) is fixed to the upper end of the swing arm (2), the lower end of the swing arm (2) is fixed to the front end of the feed shaft (3), the rear end of the feed shaft (3) is fixed to the crank handle (4), the middle part of the feed shaft (3) is connected to the lower middle part of the floating plate (5), and the sliders (6) are fixed to the lower part of the floating plate (5) on the left and right sides of the feed shaft (3); a base (7) is fixed on the body of the grinding machine, and two guide rails (8) in the front and rear directions are fixed on the base (7). The guide rails (8) slide against the sliders (6). Dynamic fit; a central screw hole (32) is opened at the rear end of the feed shaft (3), and a fan-shaped groove (31) communicating with the central screw hole (32) is opened in the middle part of the feed shaft (3) along the circumferential surface; a limiting block (9) extending into the fan-shaped groove (31) is fixedly connected to the base (7), the front end of the feed screw (10) enters the central screw hole (32) and is screwed to it, the front end of the feed screw (10) abuts against the limiting block (9), and the rear end of the feed screw (10) is fixedly connected to the feed knob (11).

2. The feeding device for a rock phase grinding mill according to claim 1, characterized in that, It also includes two tension springs (12) installed on the left and right sides of the floating plate (5), one end of the tension spring (12) is connected to the rear end of the floating plate (5) and the other end is connected to the front end of the base (7).

3. The feeding device for a petrographic grinding mill according to claim 1, characterized in that, The feed screw has a groove at its front end, and a steel ball (13) is embedded in the groove. The steel ball (13) abuts against the limiting block (9).

4. The feeding device for a rock phase grinding mill according to claim 1, characterized in that, The floating plate (5) extends downward to form a boss (51) in the middle. A round hole (52) with clearance fit with the feed shaft (3) is opened on the boss (51) along the front-back direction. The two ends of the round hole (52) are bearing mounting holes (53) with larger diameters. A window (54) communicating with the round hole (52) is opened at the lower part of the boss (51). The limiting block (9) extends into the fan-shaped groove (31) through the window (54). The bearing mounting hole (53) supports the outer ring of at least two deep groove bearings (14). The inner ring of the deep groove bearing (14) supports the feed shaft (3).

5. The feeding device for a rock phase grinding mill according to claim 1, characterized in that, The probe (15) of the displacement sensor is fixed on the floating plate (5), and the probe (15) is opposite to the sensing plate installed on the base (7).

6. The feeding device for a rock phase grinding mill according to claim 1, characterized in that, The feed knob (11) has an indicator scale.

7. The feeding device for a rock phase grinding mill according to claim 1, characterized in that, If the included angle between the left and right sides of the limiting block (9) is defined as b and the distance between the front and rear end faces is H, and the included angle between the left and right sides of the fan-shaped groove (31) is defined as a and the distance between the front and rear end faces is defined as L, then a > b and L > H.

8. The feeding device for a rock phase grinding mill according to claim 7, characterized in that, 90°≤a≤180°。 9. A feeding device for a petrographic grinding mill according to claim 7, characterized in that, a=90.68°, L=30mm.

10. A feeding device for a petrographic grinding mill according to claim 7, characterized in that, The swing angle of the swing arm (2) is a – b, and the feed amount of the feed axis (3) is LH.

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