Multi-section hollow drawing-out core rod

Abstract

The utility model discloses a multi-section hollow drawing-out core rod, and relates to the technical field of forging core rods. The device comprises a plurality of split rods and a plurality of connecting mechanisms, the split rods are linearly distributed, the connecting mechanisms are arranged between every two split rods, the split rods are hollow rods, taper sleeves are integrally arranged at the two ends in the split rods, the small opening ends of the taper sleeves face the end faces of the split rods, and positioning grooves are formed in the inner sides of the two ends of the split rods. Conical discs are arranged at the top end and the bottom end of the base disc, a double-end lead screw is transversely and rotationally connected into the base disc, guide columns are fixed to the two sides in the base disc, sliding seats are in threaded connection to the two threaded sections of the double-end lead screw, and the sliding seats slide along the guide columns. According to the utility model, the core rod is divided into a plurality of hollow split rods, so that the core rod can play a role in reducing weight and reducing weight, is beneficial to hoisting, mounting and dismounting, and can be correspondingly assembled according to the required length and shape of the core rod according to different use requirements, and the application range is widened.

Description

Technical Field

[0001] This utility model belongs to the field of forging mandrel technology, and in particular relates to a multi-segment hollow elongated mandrel. Background Technology

[0002] In the drawing process of forging, it is necessary to use drawing mandrels. However, traditional mandrels are mostly integral mandrels and are quite long, which can lead to problems such as being cumbersome and difficult to install (difficult to lift, center and disassemble), especially for the use of larger forgings.

[0003] If the design and assembly of a segmented mandrel is to be fixed between the two segments, it is a problem. Due to the limitations of the installation point, the fixing point cannot be effectively arranged inside the connection point. If the fixing point is set outside the connection point, it will affect the surface of the mandrel. The subsequent drawing process also needs to ensure the tightness of the connection point. If the tightness is not good, it will affect the mandrel, causing problems such as excessive gaps, loosening and wear, which will affect the safe use of the mandrel. Summary of the Invention

[0004] The purpose of this utility model is to provide a multi-segment hollow elongation mandrel. By dividing the mandrel into multiple hollow split rods, it can reduce weight and lighten the load, which is convenient for hoisting, installation and disassembly. Moreover, it can be assembled according to different usage requirements to meet the required mandrel length and shape, thus improving the applicability.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a multi-segment hollow drawing mandrel, comprising several split rods and several connecting mechanisms. The split rods are linearly distributed, and the connecting mechanisms are disposed between two split rods.

[0007] The split rod is a hollow rod body, and both ends of the split rod are integrally provided with conical sleeves. The small opening end of the conical sleeve faces the end face of the split rod, and positioning grooves are provided on the inner side of both ends of the split rod.

[0008] The connecting mechanism includes a base plate, with conical discs at both the top and bottom of the base plate. A double-ended lead screw is laterally rotatably connected inside the base plate. Guide posts are fixed on both sides inside the base plate. Slide seats are threadedly connected to the two threaded sections of the double-ended lead screw, and the slide seats slide along the guide posts.

[0009] An arc-shaped seat is fixed to the top surface of the slide block, and an outer conical section that mates with the conical sleeve is integrally provided on the outer side of the arc-shaped seat;

[0010] The conical disc has a horizontal plate that is perpendicular to the double-ended lead screw. A worm is provided at the midpoint of the double-ended lead screw. A worm wheel is engaged on the outside of the worm. The worm wheel is fixed between the two horizontal plates.

[0011] Both ends of the worm gear axle are fixed with internal hexagonal ends that penetrate the horizontal plate, and a guide sleeve is fixed on the horizontal plate and fitted around the internal hexagonal ends.

[0012] The end faces of two adjacent split rods are concentrically fitted together, the base plate and the cone plate are set in the positioning groove of the two adjacent split rods, and the outer cone sections of the top and bottom of the slide block are respectively fitted to the inner inclined surfaces of the adjacent cone sleeves of the two split rods.

[0013] Furthermore, the guide sleeve includes a straight cylinder, which is fixed to a horizontal plate, and a conical hopper is provided at the top of the straight cylinder.

[0014] Furthermore, the straight cylinder is provided with an internal hexagonal cone sleeve, and the two ends of the internal hexagonal cone sleeve are respectively connected to the internal hexagonal end and the cone hopper.

[0015] Furthermore, the positioning groove includes a straight groove section and a conical groove section connected in sequence. The large end of the conical groove section is flush with the end face of the split rod. The base plate gap is set in the straight groove section of the two split rods, and the conical plate gap is set in the conical groove section.

[0016] Furthermore, several reinforcing ribs are fixed between the inner side of the arc-shaped seat and the slide, and between the outer side of the arc-shaped seat and the slide.

[0017] Furthermore, the outer wall of the split rod is a conical surface structure, and the inner cavity of the split rod is a cylindrical cavity structure.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model reduces weight by dividing the core rod into multiple hollow, separate rods, which facilitates hoisting, installation, and disassembly. Furthermore, it allows for the assembly of core rods of varying lengths and shapes to meet different usage requirements, thus expanding its applicability.

[0020] 2. This utility model uses a connecting mechanism to connect split rods, which facilitates the connection and fastening between two split rods and provides strong fastening. Compared with mechanical bolt connections, it is more convenient for operators to operate, while improving connection accuracy, avoiding creep and loosening problems that occur under high temperature environments, and preventing axial movement.

[0021] 3. This utility model, through the design of the base plate and the conical plate, combined with the positioning groove on the split rod, not only plays a positioning role, but also the connecting surface of the conical surface plays a reinforcing role, which facilitates splicing and improves the connection strength.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a multi-segment hollow drawing mandrel according to the present invention;

[0025] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the connecting mechanism;

[0027] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1-Split rod, 2-Connecting mechanism, 3-Guide sleeve body, 101-Conical sleeve, 102-Positioning groove, 201-Base plate, 202-Conical plate, 203-Double-ended lead screw, 204-Guide post, 205-Slide seat, 206-Arc seat, 207-Outer conical section, 208-Horizontal plate, 209-Worm, 210-Worm wheel, 211-Internal hexagonal end, 212-Reinforcing rib, 301-Straight cylinder, 302-Conical hopper, 303-Internal hexagonal conical sleeve. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-4 As shown, this utility model is a multi-segment hollow drawing mandrel, including several split rods 1 and several connecting mechanisms 2. The several split rods 1 are linearly distributed, and the connecting mechanism 2 is disposed between two split rods 1.

[0032] The split rod 1 is a hollow rod body. Both ends of the split rod 1 are integrally provided with a conical sleeve 101. The small opening end of the conical sleeve 101 faces the end face of the split rod 1. Both ends of the split rod 1 are provided with positioning grooves 102.

[0033] The connecting mechanism 2 includes a base plate 201, with a conical plate 202 at both the top and bottom of the base plate 201. A double-ended lead screw 203 is laterally rotatably connected inside the base plate 201. Guide posts 204 are fixed on both sides inside the base plate 201. Slide seats 205 are threadedly connected to the two threaded sections of the double-ended lead screw 203. The slide seats 205 slide along the guide posts 204.

[0034] An arc-shaped seat 206 is fixed on the top surface of the slide 205, and an outer cone section 207 that mates with the cone sleeve 101 is integrally provided on the outer side of the arc-shaped seat 206.

[0035] A horizontal plate 208 is fixed inside the cone disc 202, which is perpendicular to the double-ended lead screw 203. A worm 209 is provided at the midpoint of the double-ended lead screw 203. A worm wheel 210 is engaged on the outside of the worm 209. The worm wheel 210 is fixed between the two horizontal plates 208.

[0036] Both ends of the worm gear 210 axle are fixed with internal hexagonal ends 211 that penetrate the horizontal plate 208, and a guide sleeve 3 is fixed on the horizontal plate 208 and sleeved on the outside of the internal hexagonal ends 211.

[0037] The end faces of two adjacent split rods 1 are concentrically attached. The base plate 201 and the cone plate 202 are set in the positioning groove 102 of the two adjacent split rods 1. The outer cone sections 207 at the top and bottom of the slide block 205 are respectively attached to the inner inclined surfaces of the adjacent cone sleeves 101 of the two split rods 1.

[0038] Among them, such as Figure 3-4 As shown, the guide sleeve 3 includes a straight cylinder 301, which is fixed on the horizontal plate 208, and a cone hopper 302 is provided at the top of the straight cylinder 301.

[0039] Among them, such as Figure 3-4 As shown, the straight cylinder 301 is provided with an internal hexagonal cone sleeve 303, and the two ends of the internal hexagonal cone sleeve 303 are connected to the internal hexagonal end 211 and the cone hopper 302 respectively.

[0040] Among them, such as Figure 2 As shown, the positioning groove 102 includes a straight groove section and a conical groove section connected in sequence. The large end of the conical groove section is flush with the end face of the split rod 1. The gap of the base plate 201 is set in the straight groove section of the two split rods 1, and the gap of the conical plate 202 is set in the conical groove section.

[0041] Among them, such as Figure 1-3 As shown, several reinforcing ribs 212 are fixed between the inner side of the arc-shaped seat 206 and the slide 205, and between the outer side of the arc-shaped seat 206 and the slide 205.

[0042] Among them, the outer wall of the split rod 1 is a conical surface structure, and the inner cavity of the split rod 1 is a cylindrical cavity structure.

[0043] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-segment hollow drawing mandrel, characterized in that: It includes several split rods (1) and several connecting mechanisms (2), the several split rods (1) are linearly distributed, and the connecting mechanism (2) is disposed between two split rods (1); The split rod (1) is a hollow rod body. Both ends of the split rod (1) are integrally provided with a conical sleeve (101). The small end of the conical sleeve (101) faces the end face of the split rod (1). Both ends of the split rod (1) are provided with positioning grooves (102). The connecting mechanism (2) includes a base plate (201), with a conical plate (202) at both the top and bottom of the base plate (201). A double-ended lead screw (203) is laterally rotatably connected inside the base plate (201). Guide posts (204) are fixed on both sides inside the base plate (201). A slide block (205) is threadedly connected to each of the two threaded sections of the double-ended lead screw (203). The slide block (205) slides along the guide post (204). The top surface of the slide (205) is fixed with an arc-shaped seat (206), and the outer side of the arc-shaped seat (206) is integrally provided with an outer cone section (207) that cooperates with the cone sleeve (101). The cone disc (202) has a horizontal plate (208) that is perpendicular to the double-ended lead screw (203) fixed inside. A worm (209) is provided at the midpoint of the double-ended lead screw (203). A worm wheel (210) is engaged on the outside of the worm (209). The worm wheel (210) is fixed between the two horizontal plates (208). Both ends of the worm gear (210) are fixed with internal hexagonal ends (211) that penetrate the horizontal plate (208), and a guide sleeve (3) is fixed on the horizontal plate (208) and sleeved on the outside of the internal hexagonal ends (211). The end faces of two adjacent split rods (1) are concentrically attached. The base plate (201) and the cone plate (202) are set in the positioning groove (102) of the two adjacent split rods (1). The outer cone sections (207) at the top and bottom of the slide block (205) are respectively attached to the inner inclined surfaces of the adjacent cone sleeves (101) of the two split rods (1).

2. The multi-segment hollow elongated mandrel according to claim 1, characterized in that, The guide sleeve (3) includes a straight cylinder (301), which is fixed on a horizontal plate (208), and a cone-shaped hopper (302) is provided at the top of the straight cylinder (301).

3. A multi-segment hollow elongated mandrel according to claim 2, characterized in that, The straight cylinder (301) is provided with an internal hexagonal cone sleeve (303), and the two ends of the internal hexagonal cone sleeve (303) are respectively connected to the internal hexagonal end (211) and the cone (302).

4. A multi-segment hollow elongated mandrel according to claim 1, characterized in that, The positioning groove (102) includes a straight groove section and a conical groove section connected in sequence. The large end of the conical groove section is flush with the end face of the split rod (1). The gap of the base plate (201) is set in the straight groove section of the two split rods (1), and the gap of the conical plate (202) is set in the conical groove section.

5. A multi-segment hollow drawing mandrel according to claim 1, characterized in that, Several reinforcing ribs (212) are fixed between the inner side of the arc-shaped seat (206) and the slide (205), and between the outer side of the arc-shaped seat (206) and the slide (205).

6. A multi-segment hollow drawing mandrel according to claim 1, characterized in that, The outer wall of the split rod (1) is a conical surface structure, and the inner cavity of the split rod (1) is a cylindrical cavity structure.

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