Cutter special for plastometer

Abstract

The special cutter for the plastometer comprises a base, and a rear support is arranged on the rear portion of the base. A U-shaped mounting frame is fixedly arranged at the top end of the rear bracket; a guide seat is fixedly arranged in the middle of the rear support, and the top end of the handle is arranged in the U-shaped mounting frame and hinged to the U-shaped mounting frame. A linkage double-head clamping seat is arranged on the side, close to the U-shaped mounting frame, of the handle, the handle is hinged to a clamping seat at the upper end of the linkage double-head clamping seat, a pressing rod seat is arranged in a clamping seat, away from the lower end of the handle, of the linkage double-head clamping seat, a pressing rod is arranged below the pressing rod seat and penetrates through a guide seat, and a connecting seat is arranged below the guide seat away from the pressing rod seat. A U-shaped support is arranged on the downward face, away from the guide base, of the connecting base. A plate-shaped knife rest is embedded and clamped in the U-shaped bracket; and the lower end of the pressing rod is connected with the knife rest. Through the coaxial nesting design of the ejector core and the cutter and the spring abutting mechanism, it is ensured that the outer diameter and the thickness of a sample are consistent.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of detection equipment, and particularly relates to a special cutter for plastometer, and particularly relates to a pre-pressing cutting device for sample cutting. BACKGROUND

[0002] In the prior art of sample cutting, the traditional device usually adopts a single blade directly pressed for cutting, and only contains a fixed blade holder and a blade. When in operation, the blade directly contacts the sample for cutting. However, such design has significant defects. The sample is prone to displacement or deformation in the initial stage of cutting, especially for soft materials, which leads to uneven cutting edges and large size deviation, and affects the accuracy of subsequent test results. Moreover, the pre-pressing mechanism is lacking, and the sample needs to be manually fixed, which not only is low in efficiency, but also increases the risk of human error. SUMMARY

[0003] In order to solve the problems in the prior art, the purpose of the present application is to provide a special cutter for plastometer, which integrates a pre-pressing mechanism and a cutting mechanism, ensures that the sample is first pressed and then cut during the cutting process, keeps the thickness and outer diameter of the cut sample stable and consistent, and thus improves the cutting precision of the sample.

[0004] To achieve the above purpose, the present application adopts the following technical solutions: A special cutter for plastometer, comprising a base, a rear support provided at the rear part of the base, a U-shaped mounting bracket fixed at the top end of the rear support, a guide seat fixed at the middle part of the rear support, and a handle provided in the U-shaped mounting bracket and hingedly connected with the U-shaped mounting bracket. One side of the handle close to the U-shaped mounting bracket is provided with a double-head clamping seat, the handle is hingedly connected with the clamping seat at the upper end of the double-head clamping seat, the double-head clamping seat is provided with a press rod seat in the clamping seat away from the handle, a press rod is provided below the press rod seat and penetrates through the guide seat, a connecting seat is provided below the guide seat away from the press rod seat, and a U-shaped support is provided on the side of the connecting seat away from the guide seat downward. A plate-shaped blade holder is embedded and clamped in the U-shaped support, the press rod is connected with the blade holder at the lower end, and the blade holder is provided with a cutter at the bottom end away from the connecting seat.

[0005] Further, in some embodiments, a U-shaped clamping groove is formed in the blade holder, the opening of the U-shaped clamping groove faces downward, the cutter is arranged at the opening of the U-shaped clamping groove, a through hole is formed in the cutter, and a blade edge is provided at the bottom end of the cutter. The press rod is fixedly connected with the blade holder in the U-shaped support after penetrating through the guide seat.

[0006] Further, in some embodiments, a stable step is provided at the upper end of the cutter close to the blade holder, and the stable step is hingedly connected with the bottom end of the U-shaped clamping groove in the blade holder through a fixed pin. A pressure stabilizing ring is provided on the smooth step. The pressure stabilizing ring is a closed ring. The smooth step and the pressure stabilizing ring are set close to each other. The tool holder and the pressure stabilizing ring are integrally formed.

[0007] Furthermore, in some embodiments, a fixing seat is fixedly provided under the U-shaped bracket, and the fixing seat is embedded in the U-shaped slot of the tool holder; the fixing seat is provided with a slidable top core, the top of the top core passes through the top of the fixing seat, and the top of the top core is provided with a fixing nut that is blocked by the fixing seat.

[0008] Furthermore, in some embodiments, the bottom end of the top core passes through the pressure stabilizing ring and the center hole of the cutter in sequence and extends below the cutter; the top core has a protruding pressing step in the middle, and a pre-compression spring is sleeved on the top core, with the pre-compression spring disposed between the bottom surface of the fixed seat and the pressing step.

[0009] Furthermore, in some embodiments, the U-shaped bracket and the connecting seat are integrally formed; a gap is provided between the hinge of the handle and the linkage double-headed clamp and the U-shaped mounting bracket; The lower end of the double-headed clamp is hinged to the end of the pressure rod seat; a return spring is sleeved on the pressure rod, and the return spring is located between the guide seat and the pressure rod seat.

[0010] This application provides a pre-compression sample cutting device, which achieves "pre-compression and fixation followed by precise cutting" through the coaxial nesting design of the top core and the cutter and the spring pressing mechanism. This application consists of a base support system, a guide lifting system, a pre-compression cutting execution system, and a reset mechanism. The top core passes through the central hole of the cutter, and its pressing step works in coordination with the cutter's movement to ensure that the sample is stably compressed before cutting. The cutter holder integrates a pressure-stabilizing ring to enhance rigidity and prevent sample displacement, structural deformation, and stroke mismatch, ensuring that the cut sample has a consistent outer diameter and thickness (equal volume). Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 This is an assembly diagram of an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 4 This is a schematic diagram of the cutter part in an embodiment of the present invention.

[0012] Explanation of markings in the diagram: 11. Base, 12. Rear bracket, 13. Guide seat, 14. U-shaped mounting bracket, 16. Handle, 17. Linkage double-head clamp, 18. Pressure rod seat, 19. Pressure rod, 21. Preload spring, 22. Connecting seat, 23. U-shaped bracket, 24. Fixing seat, 25. Top core, 26. Tool holder, 27. Pressure stabilizing ring, 28. Cutting knife, 29. Fixing pin, 31. Stable step, 32. Center hole, 33. Pressing step, 34. Return spring, 35. Sample, 37. U-shaped slot. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0014] In the description of this invention, it should be noted that the terms "lateral," "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly defined.

[0015] Please refer to the attached drawings. This application includes a base 11 (sample platform). A rear support 12 is provided at the rear of the base 11. A U-shaped mounting bracket 14 is fixed at the top of the rear support 12. A guide seat 13 is fixed at the middle of the rear support 12. The top of the handle 16 is disposed in the U-shaped mounting bracket 14 and hinged to the U-shaped mounting bracket 14. A linkage double-headed clamp 17 is provided on the side of the handle 16 near the U-shaped mounting bracket 14. The handle 16 is hinged to the clamp at the upper end of the linkage double-headed clamp 17. There is a gap (lever principle) between the hinge of the handle 16 and the linkage double-headed clamp 17 and the U-shaped mounting bracket 14.

[0016] A pressure rod seat 18 is provided in the clamp at the lower end of the linkage double-headed clamp 17 away from the handle 16. The clamp at the lower end of the linkage double-headed clamp 17 is hinged to the end of the pressure rod seat 18. A pressure rod 19 is provided below the pressure rod seat 18. The pressure rod 19 is disposed through the guide seat 13. A return spring 34 is sleeved on the pressure rod 19. The return spring 34 is disposed between the guide seat 13 and the pressure rod seat 18. The return spring 34 is used for system reset.

[0017] Furthermore, the base 11 serves as a basic platform, on which the rear support 12 is fixed. The guide seat 13 is bolted to the middle of the rear support 12, and the guide seat 13 has an internal shaft hole for vertical guidance of the pressure rod 19. The U-shaped mounting bracket 14 is connected to the top of the rear support 12, providing a mounting base for the handle 16. The pressure rod seat 18 is located above the guide seat 13, and the pressure rod 19 passes through the shaft hole of the guide seat 13. The upper end of the pressure rod seat 18 is hinged to the handle 16 through the linkage double-headed retainer 17, and the lower end of the pressure rod 19 passes through the guide seat 13 and is fixed to the tool holder 26.

[0018] Furthermore, in one embodiment, a connecting seat 22 is provided on the lower side of the guide seat 13 away from the pressure rod seat 18, and a U-shaped bracket 23 is provided on the side of the connecting seat 22 away from the guide seat 13 facing downward. The U-shaped bracket 23 and the connecting seat 22 are integrally formed. A plate-shaped knife holder 26 is embedded in the U-shaped bracket 23, and the lower end of the pressure rod 19 passes through the guide seat 13 and is fixedly connected to the knife holder 26 in the U-shaped bracket 23.

[0019] The tool holder 26 has a U-shaped slot 37 with the opening facing downwards; a cutter 28 is attached to the bottom of the tool holder 26 away from the connecting seat 22, and the cutter 28 is located at the opening of the U-shaped slot 37.

[0020] Furthermore, in one embodiment, the cutter 28 has a through-hole 32, a cutting edge at its bottom end, and a smoothing step 31 at the upper end of the cutter 28 near the tool holder 26. The smoothing step 31 is hinged to the bottom end of the U-shaped groove 37 on the tool holder 26 via a fixing pin 29. A pressure stabilizing ring 27 is provided on the smoothing step 31. The pressure stabilizing ring 27 is a closed ring structure that enhances the rigidity of the tool holder 26 and prevents the U-shaped arm (U-shaped groove 37) from deforming due to stress. The smoothing step 31 and the pressure stabilizing ring 27 are arranged adjacent to each other, and the tool holder 26 and the pressure stabilizing ring 27 are integrally formed.

[0021] Furthermore, in one embodiment, a fixed seat 24 is fixedly provided below the U-shaped bracket 23, and the fixed seat 24 is embedded in the U-shaped slot 37 of the knife holder 26; a slidable (liftable) top core 25 is provided on the fixed seat 24, the top of the top core 25 passes through the top of the fixed seat 24, and a fixing nut is provided on the top of the top core 25 that is blocked (supported) by the fixed seat 24; the bottom end of the top core 25 passes through the pressure stabilizing ring 27 and the center hole 32 of the cutter 28 in sequence and extends below the cutter 28, that is, the bottom end of the top core 25 extends below the cutter 28; a protruding pressing step 33 is provided in the middle of the top core 25, and a preload spring 21 is sleeved on the top core 25. The preload spring 21 is located between the bottom surface of the fixed seat 24 and the pressing step 33. The preload spring 21 causes the top core 25 to extend downward normally, and causes the top core 25 to be biased downward normally.

[0022] The top core 25 is located above the sample 35 on the base 11.

[0023] The embodiments described above are merely partial examples of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A special cutter for a plasticizer, comprising: The base (11) has a rear support (12) at its rear; characterized in that a U-shaped mounting bracket (14) is fixedly provided at the top of the rear support (12); a guide seat (13) is fixedly provided in the middle of the rear support (12), and the top of the handle (16) is set in the U-shaped mounting bracket (14) and hinged to the U-shaped mounting bracket (14). A linkage double-headed clamp (17) is provided on the side of the handle (16) near the U-shaped mounting bracket (14). The handle (16) is hinged to the clamp at the upper end of the linkage double-headed clamp (17). A pressure rod seat (18) is provided in the clamp at the lower end of the linkage double-headed clamp (17) away from the handle (16). A pressure rod (19) is provided below the pressure rod seat (18). The pressure rod (19) is provided through the guide seat (13). A connecting seat (22) is provided below the guide seat (13) away from the pressure rod seat (18). A U-shaped bracket (23) is provided on the side of the connecting seat (22) facing downward away from the guide seat (13). A plate-shaped knife holder (26) is embedded in the U-shaped bracket (23). The lower end of the pressure rod (19) is connected to the knife holder (26). A cutter (28) is provided at the bottom of the knife holder (26) away from the connecting seat (22).

2. The special cutter for a plasticizer according to claim 1, characterized in that, The tool holder (26) is provided with a U-shaped slot (37) with the opening facing downwards; the cutter (28) is set at the opening of the U-shaped slot (37), and the cutter (28) is provided with a through central hole (32) and the bottom end of the cutter (28) is provided with a cutting edge; The lower end of the pressure rod (19) passes through the guide seat (13) and is fixedly connected to the tool holder (26) in the U-shaped bracket (23).

3. The special cutter for a plasticizer according to claim 2, characterized in that, The cutter (28) has a stable step (31) at the upper end near the cutter holder (26). The stable step (31) is hinged to the bottom end of the U-shaped slot (37) on the cutter holder (26) by a fixing pin (29). A pressure stabilizing ring (27) is provided on the smooth step (31). The pressure stabilizing ring (27) is a closed ring. The smooth step (31) and the pressure stabilizing ring (27) are arranged close to each other. The tool holder (26) and the pressure stabilizing ring (27) are integrally formed.

4. The special cutter for a plasticizer according to claim 1, characterized in that, The U-shaped bracket (23) is fixedly provided with a fixed seat (24) below, and the fixed seat (24) is embedded in the U-shaped slot (37) of the tool holder (26); the fixed seat (24) is provided with a sliding top core (25), the top of the top core (25) passes through the top of the fixed seat (24), and the top of the top core (25) is provided with a fixing nut that is blocked by the fixed seat (24).

5. A special cutter for a plasticizer according to claim 4, characterized in that, The bottom end of the top core (25) passes through the center hole (32) of the pressure stabilizing ring (27) and the cutter (28) in sequence and extends below the cutter (28); the top core (25) has a protruding pressing step (33) in the middle, and a pre-compression spring (21) is sleeved on the top core (25). The pre-compression spring (21) is located between the bottom surface of the fixed seat (24) and the pressing step (33).

6. The special cutter for a plasticizer according to claim 1, characterized in that, The U-shaped bracket (23) and the connecting seat (22) are integrally formed; A gap is provided between the hinge of the handle (16) and the linkage double-headed clamp (17) and the U-shaped mounting bracket (14); The lower end of the linkage double-headed clamp (17) is hinged to the end of the pressure rod seat (18); A return spring (34) is sleeved on the pressure rod (19), and the return spring (34) is located between the guide seat (13) and the pressure rod seat (18).

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