clamping mechanism

Abstract

The utility model provides a kind of clamping mechanism. Including: fixture body, pressing plate and cushion block, the upper surface of fixture body is provided with multiple V-shaped grooves, and the side away from V-shaped groove is provided with recess, recess extends along the length direction of fixture body and is provided, two fixed bases are provided in recess, two fixed bases are interval setting along the length direction of fixture body, wherein, fixed base is movably set along the length direction of recess, to adapt to the workpiece of different length;Pressing plate is provided with two, each pressing plate is located above fixed base;Cushion block is set in the side away from recess, cushion block is located between pressing plate and fixture body, the lower surface of cushion block and the upper surface of fixture body abut, the upper surface of cushion block and the one end of pressing plate abut;Wherein, pressing plate is detachably connected with fixture body by fixed base, the other end of pressing plate is used for fixing the workpiece in V-shaped groove. The present application solves the problem of low efficiency, time-consuming and laborious in the process of machining the head shape of ejector rod needle in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and more specifically, to a clamping mechanism. Background Technology

[0002] In the mold manufacturing industry, ejector pins (or ejector teeth) are an important component of mold parts, and their head shapes often require precision machining to meet specific design requirements. Currently, there are two main approaches to machining the head shapes of ejector pins and ejector teeth in the industry: one is to purchase standard ejector pins and then perform customized machining using CNC machine tools; the other is to directly purchase ejector pins that already contain the required head shape. Although these two methods can meet machining requirements to some extent, they still have significant limitations and shortcomings in actual operation.

[0003] The method of machining standard ejector pin heads using CNC machine tools requires the operator to individually clamp the ejector pin for each machining operation, including a tedious manual straightening and alignment process. This series of operations not only consumes a lot of manpower but is also inefficient. In addition, due to the difference in ejector pin length, the operator also needs to frequently adjust the position of the shims and pressure plates, further increasing the machining time and effort costs.

[0004] No effective solution has yet been proposed for the above problems. Utility Model Content

[0005] The main purpose of this utility model is to provide a clamping mechanism to solve the problems of low efficiency, time and labor costs in the processing of the shape of the ejector pin head in the prior art.

[0006] To achieve the above objectives, according to one aspect of the present invention, a clamping mechanism is provided, comprising: a clamp body, the upper surface of which is provided with a plurality of V-grooves, and a groove provided on the side away from the V-grooves, the groove extending along the length direction of the clamp body, and two fixing seats provided in the groove, the two fixing seats being spaced apart along the length direction of the clamp body, wherein the fixing seats are movably arranged along the length direction of the groove to accommodate workpieces of different lengths; two pressure plates, each pressure plate being located above a fixing seat; and a pad, the pad being located on the side away from the groove, the pad being located between the pressure plate and the clamp body, the lower surface of the pad abutting against the upper surface of the clamp body, and the upper surface of the pad abutting against one end of the pressure plate; wherein the pressure plate is detachably connected to the clamp body via the fixing seats, and the other end of the pressure plate is used to fix the workpiece located in the V-groove.

[0007] Furthermore, each V-groove is spaced apart along the width direction of the fixture body, and the opening size and groove depth of each V-groove are different.

[0008] Furthermore, the pressure plate includes a pressure plate body, which extends along the width direction of the clamp body. The pressure plate body has a connecting hole, and the pressure plate body is detachably connected to the fixing seat by screws passing through the connecting hole.

[0009] Furthermore, the end of the pressure plate body away from the pad is provided with a slit structure, and the slit structure is set at a first angle with the upper surface of the pressure plate body.

[0010] Furthermore, the fixing base includes: a base plate, one end of which abuts against the bottom of the groove, the outer diameter of the base plate being the same as the width of the groove; and a column, one end of which is connected to the other end of the base plate, the other end of which extends vertically upward and protrudes from the groove.

[0011] Furthermore, the upper surface of the fixture body is provided with multiple limiting grooves, each limiting groove is spaced apart along the length direction of the fixture body, and the limiting grooves extend along the width direction of the fixture body, with multiple limiting grooves and multiple V-shaped grooves alternately arranged.

[0012] Furthermore, the width of the limiting groove is consistent with the width of the workpiece tail.

[0013] Furthermore, weight-reducing grooves are provided on both sides of the fixture body, and the weight-reducing grooves on both sides are symmetrically arranged.

[0014] Furthermore, at least one end of the fixture body is provided with a cutting plane for positioning reference.

[0015] Furthermore, the fixture body is made of H13 hardened material.

[0016] The present invention utilizes a fixture body with multiple V-grooves for positioning ejector pins and rods of different diameters. A groove is located on the side away from the V-grooves for mounting two movable fixing seats. The adjustable position of these fixing seats allows for easy adaptation to ejector pins and rods of varying lengths, greatly simplifying the clamping process and saving manpower and time. Pressure plates are detachably connected to the fixture body via the fixing seats. Two pressure plates are spaced apart along the length of the fixture body and positioned above the fixing seats to press the ejector pin firmly, ensuring stability during machining. This invention solves the problems of low efficiency and time-consuming processing of ejector pin head shapes in existing technologies. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of a first embodiment of the clamping mechanism according to the present invention is shown;

[0019] Figure 2 A schematic diagram of a second embodiment of the clamping mechanism according to the present invention is shown.

[0020] The above figures include the following reference numerals:

[0021] 10. Fixture body;

[0022] 11. V-groove;

[0023] 12. Groove;

[0024] 13. Limiting groove;

[0025] 20. Pressure plate;

[0026] 21. Pressure plate body;

[0027] 22. Connecting hole;

[0028] 30. Fixture;

[0029] 31. Chassis;

[0030] 32. Column;

[0031] 40. Spacer blocks;

[0032] 50. Screws;

[0033] 100. Workpiece;

[0034] 101. Cutting plane;

[0035] 102. Weight reduction tank. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0039] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0040] Combination Figures 1 to 2 As shown, according to a specific embodiment of this application, a clamping mechanism is provided.

[0041] Specifically, such as Figure 1 As shown, the clamping mechanism includes a clamp body 10, a pressure plate 20, and a pad 40. The upper surface of the clamp body 10 is provided with multiple V-grooves 11, and a groove 12 is provided on the side away from the V-grooves 11. The groove 12 extends along the length of the clamp body 10, and two fixing seats 30 are provided within the groove 12. The two fixing seats 30 are spaced apart along the length of the clamp body 10. The fixing seats 30 are movably arranged along the length of the groove 12 to accommodate workpieces of different lengths. The fixture has two pressure plates 20, each located above the fixed seat 30. A pad 40 is located on the side away from the groove 12, between the pressure plate 20 and the fixture body 10. The lower surface of the pad 40 abuts against the upper surface of the fixture body 10, and the upper surface of the pad 40 abuts against one end of the pressure plate 20. The pressure plate 20 is detachably connected to the fixture body 10 via the fixed seat 30, and the other end of the pressure plate 20 is used to fix the workpiece 100 located in the V-groove 11.

[0042] The present invention utilizes a fixture body with multiple V-grooves for positioning ejector pins and rods of different diameters. A groove is located on the side away from the V-grooves for mounting two movable fixing seats. The adjustable position of these fixing seats allows for easy adaptation to ejector pins and rods of varying lengths, greatly simplifying the clamping process and saving manpower and time. Pressure plates are detachably connected to the fixture body via the fixing seats. Two pressure plates are spaced apart along the length of the fixture body and positioned above the fixing seats to press the ejector pin firmly, ensuring stability during machining. This invention solves the problems of low efficiency and time-consuming processing of ejector pin head shapes in existing technologies.

[0043] Specifically, each V-groove 11 is spaced apart along the width direction of the fixture body 10, and the opening size and groove depth of each V-groove 11 are different. This embodiment, by adjusting the opening size and groove depth of the V-grooves, can accommodate ejector pins and push pins of various diameters, enhancing the versatility and adaptability of the clamping mechanism. The technology in this embodiment allows operators to process workpieces of different diameters without changing clamping tools, greatly improving work efficiency.

[0044] like Figure 1As shown, in this embodiment, three V-grooves 11 of different sizes are provided. The first V-groove, the second V-groove, and the third V-groove are arranged sequentially away from the groove 12. In this embodiment, the workpiece is a push rod or push pin. The first V-groove can accommodate workpieces 100 with a diameter of 5mm to 8mm. Due to the small diameter of these workpieces, the opening and depth of the V-groove are designed with greater precision to provide sufficient clamping force and prevent displacement due to slight vibration or improper operation during processing. The sidewall angle and groove width of the first V-groove are carefully calculated based on the geometry and material properties of the small-diameter push rod and push pin to ensure that the workpiece is not deformed during fixing while achieving good positioning accuracy. The second groove can accommodate workpieces 100 with a diameter of 10mm to 14mm. The size of the second V-groove is designed between the first and third V-grooves, with a moderate width and depth, which can reduce the pressure of the pressure plate 20 on the workpiece while ensuring clamping stability and avoiding unnecessary damage to the workpiece. The third groove can accommodate workpieces with diameters ranging from 16mm to 20mm. Due to the larger diameter of these workpieces, the V-groove opening is designed to be relatively wide and the groove depth is also greater to provide sufficient support and stability. The sidewall angle of the third V-groove is designed to be more blunt to reduce clamping stress on large-diameter workpieces. Simultaneously, the depth and width of the groove ensure the stability of the workpiece during clamping, reducing errors during processing. By setting V-grooves of different sizes, this clamping mechanism achieves efficient clamping of various sizes of ejector pins and centers, reducing downtime caused by tooling changes and improving processing flexibility and efficiency. Operators can quickly select the appropriate V-groove for clamping based on the diameter of the ejector pin or center, without the need for lengthy equipment adjustments or fixture changes, thus significantly reducing operating costs and time consumption.

[0045] In other embodiments, the technical problem of processing diversity requirements can also be solved by designing replaceable V-groove modules to accommodate workpieces with a wider range of diameters.

[0046] Specifically, the pressure plate 20 includes a pressure plate body 21, which extends along the width of the clamp body 10. A connecting hole 22 is provided on the pressure plate body 21, and the pressure plate body 21 is detachably connected to the fixing seat 30 via a screw 50 passing through the connecting hole 22. This detachable connection between the pressure plate 20 and the fixing seat 30 enables rapid positioning and fastening of the pressure plate 20, simplifying the clamping process.

[0047] The pressure plate body 21 is elongated, extending along the width of the fixture body 10. This arrangement ensures that the pressure plate 20 can cover as many ejector pins and ejector rods as possible, thereby increasing the number of parts processed at one time and improving processing efficiency. The thickness and width of the pressure plate body 21 are carefully designed to ensure sufficient rigidity and stability under different pressures, preventing deformation during processing.

[0048] A connecting hole 22 is provided on the pressure plate body 21. The function of the connecting hole 22 is to allow the screw 50 to pass through, connecting the pressure plate 20 to the fixing seat 30. The diameter of the connecting hole 22 is slightly larger than the diameter of the screw 50, but this tolerance design is very precise, ensuring both the firmness of the connection and the ability to finely adjust the pressure plate 20 on the fixing seat 30 to better accommodate ejector pins and push rods of different lengths. In this embodiment, a screw 50 with a size of M12*30mm is used. When it is necessary to adjust the position of the pressure plate 20 to accommodate ejector pins and push rods of different lengths, the operator can easily loosen the screw 50, move the pressure plate body 21 to the desired position, and then tighten the screw 50 to fix it.

[0049] In this embodiment, after the ejector pin is placed in the V-groove 11, the pressure plate 20 is adjusted to a suitable position by the fixing seat 30, so that the lower surface of the pressure plate body 21 contacts the upper surface of the ejector pin. The pressure plate 20 is then fixed by screws 50, thereby pressing the ejector pin tightly into the V-groove 11 and ensuring positioning accuracy during processing. The upper surface of the pressure plate 20 can also be designed to be smooth or have anti-slip texture to prevent displacement of the ejector pin during processing. At the same time, its edges can be chamfered or polished smooth to reduce scratches on the surface of the ejector pin and protect the integrity of the workpiece. Compared with traditional clamping tools, the pressure plate 20 design in this application has obvious advantages. First, its adjustable and detachable characteristics allow the operator to quickly adjust and firmly fix the ejector pin, avoiding the tedious process of repeated alignment and manual positioning in traditional clamping methods. Second, the synergistic effect of the pressure plate 20 and the V-groove 11 not only improves the processing accuracy but also reduces the possibility of processing errors, improving the overall quality and efficiency of ejector pin or ejector processing.

[0050] Specifically, the end of the pressure plate body 21 away from the pad block 40 is provided with a slit structure, and the slit structure is set at a first angle with the upper surface of the pressure plate body 21. The main purpose of the slit structure is to better fit the upper surface of the push rod and push pin, especially when processing the head shape of the push rod and push pin, to provide a more precise clamping effect.

[0051] The design of the first included angle is based on principles of physics and engineering. When the pressure plate body 21 is fixed to the fixing base 30 by screws 50, the angle at which the cut edge structure contacts the upper surface of the ejector rod or ejector pin directly affects the distribution and effect of the clamping force. If the angle is designed to be too small, the clamping force may be too concentrated, resulting in excessive local stress on the ejector rod and ejector pin, which may cause material deformation or damage. Conversely, if the angle is designed to be too large, the clamping force may be unevenly distributed, affecting the positioning accuracy of the ejector rod and ejector pin, thereby reducing the processing quality. Therefore, the setting of the first included angle needs to find the best balance between stability and clamping effect, ensuring that sufficient clamping force is provided during processing without causing excessive stress on the ejector rod and ejector pin.

[0052] Specifically, the fixing base 30 includes: a base 31, one end of which abuts against the bottom of the groove 12, the outer diameter of the base 31 being the same as the width of the groove 12; and a column 32, one end of which is connected to the other end of the base 31, the other end of which extends vertically upward and protrudes from the groove 12. The split design of the fixing base, namely the combination of the base 31 and the column 32, achieves both stability and flexible height adjustment for the fixing base 30. The close contact between the base 31 and the bottom of the groove 12 provides sufficient support, while the extension of the column 32 provides a fixing point for the pressure plate, ensuring the overall stability of the clamping mechanism.

[0053] The base 31 is located at the bottom of the fixed seat 30, with one end abutting against the bottom of the groove 12 on the clamp body 10. This contact method ensures that the fixed seat 30 can be firmly fixed to the clamp body 10 during use, avoiding any unexpected movement during processing. The outer diameter of the base 31 matches the groove width of the groove 12. This precise dimensional matching not only ensures the stable installation of the fixed seat 30 but also increases its contact area with the clamp body 10 to a certain extent, improving the rigidity of the overall mechanism. To enhance durability and stability, the base 31 is typically made of high-strength materials and may undergo additional hardening treatment to resist wear and impact during processing.

[0054] One end of the column 32 is connected to the other end of the base 31, and the other end extends vertically upward, eventually protruding from the upper surface of the groove 12. The column 32 is designed primarily to provide support and guidance for the pressure plate 20, ensuring that the pressure plate 20 can move smoothly along the column 32 during position adjustment without tilting or jamming. Furthermore, the top of the column 32 may have a threaded hole corresponding to the connecting hole 22 on the pressure plate 20, allowing the screw 50 to pass through the connecting hole 22 on the pressure plate 20 and connect with the threaded hole at the top of the column 32, forming an adjustable clamping mechanism.

[0055] The fixed base 30 is tightly engaged with the groove 12 on the fixture body 10 via the base 31, providing stable support for the pressure plate 20. When it is necessary to adjust the clamping length to accommodate workpieces 100 of different lengths, the operator can manually or using appropriate tools move the pressure plate 20 along the direction of the column 32 until the pressure plate 20 reaches the ideal clamping position. Once the position is determined, the pressure plate 20 is firmly fixed to the column 32 by tightening the screws 50, thereby pressing the workpiece 100 within the V-groove 11, ensuring positioning accuracy and stability during processing.

[0056] In one specific embodiment, the step of adjusting the fixing seat includes: the operator measuring or estimating the length of the ejector pin. Based on the length of the ejector pin, the position of the fixing seat within the groove is adjusted manually or using a tool (such as a wrench). The pressure plate is moved so that it covers the top of the ejector pin and contacts the post on the fixing seat. A screw is passed through the connecting hole on the pressure plate and connected to the threaded hole on the fixing seat. By adjusting the tightness of the screw, the pressure plate is securely fixed to the fixing seat, simultaneously fixing the ejector pin in the V-groove. After machining is completed, the operation can be reversed to easily adjust the position of the pressure plate and the fixing seat for quick clamping of ejector pins of different lengths, achieving continuous and efficient machining.

[0057] The configuration of the column 32 and the adjustability of the screw 50 give the pressure plate 20 and the fixed seat 30 a high degree of flexibility, allowing the operator to make quick adjustments according to the length and diameter of the ejector pin, greatly improving processing efficiency.

[0058] Specifically, the upper surface of the fixture body 10 is provided with multiple limiting grooves 13. These limiting grooves 13 are spaced apart along the length of the fixture body 10 and extend along its width. The multiple limiting grooves 13 are alternately arranged with multiple V-grooves 11. By providing the limiting grooves 13 on the upper surface of the fixture body 10, additional positioning and limiting functions are provided for the workpiece, preventing the workpiece 100 from shifting during machining. The alternating arrangement of the limiting grooves 13 and V-grooves 11 forms a complete positioning system, maintaining the precise position of the workpiece 100 even under high-speed cutting conditions.

[0059] On the upper surface of the fixture body 10, the V-groove 11 and the limiting groove 13 form an alternating layout, that is, one V-groove is immediately followed by a limiting groove. This design ensures the precise clamping of the workpiece 100 within the V-groove 11 while further guaranteeing the workpiece stability during processing. In addition, the alternating arrangement of the V-groove 11 and the limiting groove 13 also helps to maximize the use of resources within a limited space, enabling the clamping mechanism to accommodate the processing of a larger number of workpieces 100 of different specifications.

[0060] In other embodiments, an elastic material, such as rubber or plastic, can be embedded in the limiting groove to adapt to minute changes in the workpiece size, thus solving the problem of dimensional adaptability under precision machining.

[0061] Specifically, the width of the limiting groove 13 is consistent with the width of the tail of the workpiece 100. This embodiment ensures precise positioning of the head of the workpiece 100 during processing by precisely matching the width of the limiting groove 13 with the tail of the workpiece 100, avoiding processing errors caused by dimensional discrepancies. The width design of the limiting groove 13, matching the width of the tail of the workpiece 100, provides optimal limiting effect while reducing excessive constraint on the workpiece and avoiding unnecessary stress concentration. The technology in this embodiment further improves processing accuracy and reduces quality problems caused by improper clamping.

[0062] like Figure 2 As shown, in this embodiment, the tail dimension of workpiece 100 is 10mm, so the width of the limiting groove 13 is designed to be 10mm, but its tolerance range is strictly controlled between 0 and +0.02mm. The setting of the tolerance reflects the designer's pursuit of machining accuracy and consideration of the possible slight differences in the dimensions of different batches of workpiece 100. The upper limit of the tolerance +0.02mm means that the actual maximum width of the limiting groove 13 can be 10.02mm. This small allowable variation can adapt to the fluctuation of the tail dimension of different workpieces 100, ensuring that even when facing workpieces 100 with slightly different dimensions, the fixture can still provide a stable clamping effect. At the same time, the zero lower limit of the tolerance ensures that the minimum width of the limiting groove 13 will not be less than 10mm, avoiding the situation where the workpiece 100 cannot enter the groove smoothly.

[0063] In other embodiments, the technical problem of processing diverse workpieces can be solved by setting an adjustable limit groove 13 width to accommodate workpieces with different tail widths.

[0064] Specifically, the fixture body 10 has weight reduction grooves 102 on both sides, and the weight reduction grooves 102 on both sides are symmetrically arranged.

[0065] By setting weight-reducing grooves 102 on both sides, the overall weight of the fixture can be effectively reduced, making it easier for the operator to handle and adjust it. The symmetrically arranged weight-reducing grooves 102 can evenly distribute the stress after material removal, avoiding structural instability caused by local material loss, thereby ensuring the rigidity and strength of the fixture when bearing processing forces.

[0066] Specifically, at least one end of the fixture body 10 is provided with a cutting plane 101 for positioning reference. By using the cutting plane 101 as a reference, the machining accuracy of the workpiece can be significantly improved, and errors caused by unstable reference can be reduced.

[0067] The cutting plane 101 is typically formed through precision machining, possessing high flatness and parallelism. Its primary function is to serve as a positioning datum surface. In machining, the selection and machining of the positioning datum are fundamental to ensuring the machining accuracy of parts, especially for ejector pins and ejector teeth with strict dimensional and positional requirements. The accuracy of the positioning datum directly affects the quality and performance of the final product. The design of the cutting plane 101 ensures precise parallelism or perpendicularity with other key structures of the fixture body 10 (such as the V-groove 11, the limiting groove 13, etc.). This characteristic is crucial for maintaining dimensional consistency and symmetry when machining the head shape of ejector pins and ejector teeth.

[0068] The position of the cutting plane 101 on the fixture body 10 is usually planned in advance. It serves as a reference point during the machining process. The operator can precisely adjust the position of the ejector pin by measuring the distance between the workpiece and the cutting plane 101, ensuring that all ejector pins and ejector pins to be machined are at the same machining starting point.

[0069] Another important function of the cutting plane 101 is to ensure accurate docking between the fixture body 10 and various machining equipment (such as CNC machine tools). By aligning the cutting plane 101 with the corresponding reference surface on the machine tool (such as the worktable surface), positioning errors between the fixture and the machine tool can be eliminated, thereby improving the overall accuracy and consistency of machining.

[0070] Specifically, the fixture body 10 is made of H13 quenched material.

[0071] H13 steel, also known as H13 tool steel, is a widely used hot work die steel. It contains alloying elements such as chromium, molybdenum, and vanadium.

[0072] Quenching is a heat treatment process that alters the internal structure of steel by heating it to a specific temperature and then rapidly cooling it, thereby increasing its hardness and strength. For H13 steel, quenching involves heating the material to approximately 870-1040℃ (1600-1900°F) and then rapidly cooling it in oil or air to optimize its properties. After quenching, tempering is usually required to eliminate the stress generated during quenching, reduce brittleness, and further improve the material's toughness.

[0073] Quenching significantly increases the surface hardness of H13 steel, which helps resist wear and scratches during prolonged use, especially in high-pressure and frictional processing environments, maintaining surface integrity and functional stability. H13 steel retains its properties and shape at high temperatures, making it less prone to deformation during heating and cooling cycles, ideal for use as a jig material under hot working conditions. Despite its extremely high hardness after quenching, H13 steel also possesses good toughness, meaning it is less prone to fracture under impact loads, providing greater reliability and safety. The alloying elements in H13 steel also provide corrosion resistance, maintaining material stability and durability when exposed to various coolants, lubricants, and other chemicals during processing.

[0074] In other embodiments, other high-performance materials, such as ceramics and tungsten carbide, can be selected to meet the requirements of higher strength and harsher environments, and to solve the material selection problem under special working conditions.

[0075] Optionally, when using the clamping mechanism of this application to process the head shape of a workpiece, firstly, a suitable V-groove 11 is selected for clamping according to the diameter of the workpiece, and the tail of the workpiece 100 is placed in the limiting groove 13, with the tail end of the workpiece aligned with or protruding from the reference cutting plane 101. Then, the operator adjusts the position of the fixing seat 30 according to the length of the workpiece, so that the pressure plate 20 can accurately clamp the workpiece 100. Next, the pressure plate 20 is fixed to the fixing seat 30 with screws 50, while ensuring good contact between the cut edge structure of the pressure plate 20 and the workpiece to distribute pressure and prevent workpiece deformation. At this point, the workpiece 100 is firmly fixed on the clamping mechanism, and the head shape can be processed. After processing, the screws 50 are loosened, and the pressure plate 20 and workpiece 100 are removed. The entire clamping and processing process is efficient and stable, significantly improving the efficiency and quality of workpiece head shape processing.

[0076] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0077] This solution, through its cleverly designed V-groove and adjustable mounting base, can quickly adapt to workpieces of different diameters and lengths, eliminating the need for complex alignment processes, significantly shortening clamping time and improving production efficiency. The easy movement of the pressure plate further simplifies the operation process, reduces labor intensity, and ensures stable clamping force, preventing displacement during processing and guaranteeing the machining accuracy and consistency of the workpiece head shape. The fixture body, made of H13 hardened material, not only possesses high hardness and wear resistance but also excellent thermal stability and toughness, adapting to high-intensity machining environments and extending its service life. This solution optimizes the machining process of ejector pins and ejector rods, achieving simplified operation, precise machining, and high production efficiency, making it a powerful tool for improving machining quality and efficiency in the mold processing field.

[0078] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0079] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0080] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0081] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A clamping mechanism, characterized in that, include: The fixture body (10) has a plurality of V-grooves (11) on its upper surface and a groove (12) on the side away from the V-grooves (11). The groove (12) extends along the length direction of the fixture body (10). Two fixing seats (30) are provided in the groove (12). The two fixing seats (30) are spaced apart along the length direction of the fixture body (10). The fixing seats (30) are movably arranged along the length direction of the groove (12) to accommodate workpieces (100) of different lengths. Two pressure plates (20) are provided, each pressure plate (20) being located above the fixing seat (30); A pad (40) is disposed on the side away from the groove (12). The pad (40) is located between the pressure plate (20) and the clamp body (10). The lower surface of the pad (40) abuts against the upper surface of the clamp body (10), and the upper surface of the pad (40) abuts against one end of the pressure plate (20). The pressure plate (20) is detachably connected to the fixture body (10) via the fixing seat (30), and the other end of the pressure plate (20) is used to fix the workpiece (100) located in the V-groove (11).

2. The clamping mechanism according to claim 1, characterized in that, Each of the V-grooves (11) is spaced apart along the width direction of the fixture body (10), and the opening size and groove depth of each of the V-grooves (11) are different.

3. The clamping mechanism according to claim 1 or 2, characterized in that, The pressure plate (20) includes a pressure plate body (21), which extends along the width direction of the clamp body (10). A connecting hole (22) is provided on the pressure plate body (21), and the pressure plate body (21) is detachably connected to the fixing seat (30) by a screw (50) passing through the connecting hole (22).

4. The clamping mechanism according to claim 3, characterized in that, The pressure plate body (21) has a slit structure at one end away from the pad (40), and the slit structure has a first angle with the upper surface of the pressure plate body (21).

5. The clamping mechanism according to claim 1, characterized in that, The mounting base (30) includes: A chassis (31) is provided, one end of which abuts against the bottom of the groove (12), and the outer diameter of the chassis (31) is the same as the width of the groove (12). A column (32) is provided, one end of which is connected to the other end of the chassis (31). The other end of the column (32) extends upward in the vertical direction and protrudes from the groove (12).

6. The clamping mechanism according to claim 1, characterized in that, The upper surface of the clamp body (10) is provided with a plurality of limiting grooves (13), each of the limiting grooves (13) is spaced apart along the length direction of the clamp body (10), the limiting grooves (13) extend along the width direction of the clamp body (10), and the plurality of limiting grooves (13) and the plurality of V-shaped grooves (11) are alternately arranged.

7. The clamping mechanism according to claim 6, characterized in that, The width of the limiting groove (13) is the same as the width of the tail of the workpiece (100).

8. The clamping mechanism according to claim 1, characterized in that, The clamp body (10) is provided with weight reduction grooves (102) on both sides, and the weight reduction grooves (102) on both sides are symmetrically arranged.

9. The clamping mechanism according to claim 1, characterized in that, The fixture body (10) has a cutting plane (101) for positioning reference at at least one end.

10. The clamping mechanism according to claim 1, characterized in that, The fixture body (10) is made of H13 quenched material.

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