Self-calibration floating die holder

Abstract

The utility model relates to the technical field of drawing equipment, in particular to a self-calibration floating die holder which comprises a die holder assembly and a die holder body connected with the die holder assembly, a limiting sleeve is sleeved on the outer side of the die holder assembly and the outer side of the die holder body, a mounting hole is formed in the die holder assembly, and the die holder assembly is connected with the limiting sleeve. A mold tensioning sleeve and a mold are sequentially arranged in the mounting hole from left to right in a sleeving manner; a mounting groove is formed in the inner side of the die holder body, a die hole is formed in the center of the die holder body, and a plurality of adjusting springs are arranged between the die holder body and the die holder assembly; and a plurality of limiting pieces for limiting the positions of the die holder assembly and the limiting sleeve are distributed on the die holder body. According to the utility model, the stress direction of the die can be automatically calibrated, and the stress direction of the die is ensured to be consistent with the drawing direction of a metal workpiece, so that the phenomena of wall deviation, twisting and surface defects of the metal workpiece are avoided, and the yield of the metal workpiece formed by drawing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drawing equipment, in particular to a self-calibrating floating die seat. Background Art

[0002] Drawing machine is an industrial equipment composed of mechanical equipment, lubrication equipment, electrical equipment, hydraulic and pneumatic systems, etc. It is a device for drawing metal materials. Drawing machine is a device for drawing metal. Drawing machine uses a mold to determine the shape of the metal material after drawing. The mold of the drawing machine is installed on the mold base. At present, there are many types of long strips, special-shaped copper tubes, rods and bars of metal workpieces, with various sizes and specifications. When the traditional punch and die combination is used for drawing production, the relative position of the punch and die is fixed and cannot be adjusted. When the force direction of the drawing machine die is inconsistent with the drawing direction of the drawn metal workpiece, the drawn metal workpiece is prone to quality problems such as wall deviation, twisting and surface defects. The yield rate of drawn metal workpieces is low, which will cause a large amount of waste and high production costs. Summary of the invention

[0003] In order to solve the quality problem that when the force direction of the mold of the prior art drawing machine is inconsistent with the drawing direction of the drawn metal workpiece, the metal workpiece is prone to deviation, twisting and surface defects. The utility model provides a self-calibrating floating mold base, which can automatically calibrate the force direction of the mold to ensure that the force direction of the mold is consistent with the drawing direction of the metal workpiece, thereby avoiding the deviation, twisting and surface defects of the metal workpiece, and improving the yield rate of the drawn metal workpiece.

[0004] In order to achieve the above purpose, the technical solution of the utility model is: a self-calibrating floating die base, including a die base assembly and a die base body connected to the die base assembly, a limiting sleeve is sleeved on the outer side of the die base assembly and the die base body, a mounting hole is opened on the die base assembly, and a mold tension sleeve and a mold are sleeved in sequence from left to right inside the mounting hole. The mold tension sleeve plays a role of pressing and fixing the mold, and the limiting sleeve plays a role of limiting and protecting the die base assembly.

[0005] The inner side of the die base body is provided with a mounting groove, the center of the die base body is provided with a die hole, and a plurality of adjustment springs are arranged between the die base body and the die base assembly. The mounting groove facilitates the movement of the die base assembly, and the adjustment spring supports the die base body and the die base assembly so that there is a gap between the two. The die base assembly can be in a steady state and realize self-calibration under the interaction force of the drawing machine pulling force and the elastic force of the adjustment spring, ensuring that the force direction of the die is consistent with the drawing direction of the metal workpiece.

[0006] The mold base body is provided with a plurality of limiting members for limiting the positions of the mold base assembly and the limiting sleeve, and the limiting members play a role in limiting the mold base assembly and the limiting sleeve.

[0007] Furthermore, one end of the mold close to the mold base body corresponds to the mold hole, and one end of the mold close to the mold tensioning sleeve is symmetrically provided with key groove 1, and the inner side wall of the mold base assembly is symmetrically provided with key groove 2. Key blocks are arranged in key groove 1 and key groove 2, and the key blocks play a role in limiting the movement of the mold to prevent the mold from rotating in the mounting hole.

[0008] Furthermore, the outer side of the die base assembly is provided with a plurality of concave platforms in an annular arrangement, the outer side of the mold tension sleeve is provided with a plurality of ear plates matching the concave platforms in an annular arrangement, the ear plates are provided with fastening bolts for fixing the mold tension sleeve, and the ear plates are fixed to the die base assembly by fastening bolts. The concave platforms provide installation positions for the ear plates to prevent the ear plates from protruding outwards, and the fastening bolts are used to fix the mold tension sleeve to the die base assembly.

[0009] Furthermore, the inner side of the die base assembly is provided with a plurality of spring grooves in an annular manner, the inner side wall of the die base body is provided with a plurality of steps corresponding to the spring grooves in an annular manner, and the two ends of the adjustment spring are connected to the spring grooves and the steps respectively. The adjustment spring connects the die base body and the die base assembly so that the die base assembly can swing inside the limiting sleeve to achieve the effect of automatically calibrating the force direction of the die, thereby ensuring that the force direction of the die is consistent with the drawing direction of the metal workpiece.

[0010] Furthermore, the die base assembly is located inside the limiting sleeve, and a plurality of limiting circular holes are provided at the edge of the die base assembly. The limiting circular holes facilitate the movement of the die base assembly inside the limiting sleeve, and can cooperate with the limiting member to limit the range of movement of the die base assembly.

[0011] Furthermore, a square hole is formed at one end of the limiting sleeve close to the die base assembly, and a plurality of strip holes corresponding to the limiting circular holes are formed on the limiting sleeve, so that the limiting member can be connected to the die base body by passing through the die base assembly.

[0012] Furthermore, the limiting member is a limiting screw, the limiting screw corresponds to the limiting circular hole, one end of the limiting screw passes through the strip hole and the limiting circular hole in sequence, and is threadedly connected to the mold base body.

[0013] Furthermore, the diameter of the limiting screw is smaller than the diameter of the limiting circular hole, and the head diameter of the limiting screw is larger than the width of the strip hole, the purpose of which is to ensure that the mold base assembly has a certain range of motion and to prevent the limiting sleeve from falling off the mold base assembly and the mold base body.

[0014] Furthermore, there is a gap between the inner side of the limiting sleeve and the outer side of the die base assembly, so as to ensure that the die base assembly can move in the limiting sleeve by the force of the adjustment spring.

[0015] Furthermore, there is a gap between the inner side of the mold base body and the outer side of the mold base assembly, so as to ensure that the mold base assembly can move freely inside the mold base body and the limiting sleeve.

[0016] Through the above technical solution, the beneficial effects of the utility model are:

[0017] The utility model has a simple structure and good use effect, and effectively improves the strength and toughness of the die base; it can automatically calibrate the force direction of the die during the process of drawing the metal workpiece, ensure that the force direction of the die is consistent with the drawing direction of the metal workpiece, avoid the metal workpiece from being distorted, twisted, and having surface defects, improve the yield rate of the drawn metal workpiece, and reduce the production cost; at the same time, it improves the versatility and applicability.

[0018] The mold base body and the mold base assembly of the utility model are supported by the adjusting spring elastic force and there is a gap. The mold base assembly can be in a steady state and realize self-calibration under the interaction force of the drawing machine pulling force and the adjusting spring elastic force, so that the center line of the mold and the center line of the metal workpiece being drawn are completely coincident, ensuring that the force direction of the mold is consistent with the drawing direction of the metal workpiece, so as to achieve the effect of avoiding the metal workpiece from being deflected, twisted and having surface defects.

[0019] The mold base assembly of the utility model can rock in the limiting sleeve by adjusting the spring, so as to achieve the effect of automatically calibrating the force direction of the mold; wherein the limiting sleeve has the function of limiting and protecting the mold base assembly and the mold base body, and the limiting circular hole facilitates the movement of the mold base assembly in the limiting sleeve, and can cooperate with the limiting screw to limit the range of movement of the mold base assembly, and the limiting screw can also prevent the limiting sleeve from falling off the mold base assembly and the mold base body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a self-calibrating floating mold base of the utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of a self-calibrating floating mold base of the utility model. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the structure of the mold base assembly of the utility model. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the structure of the mold base assembly of the utility model. Figure 2 ;

[0024] Figure 5 It is a structural schematic diagram of the mold base body of the utility model;

[0025] Figure 6 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0026] The numbers in the accompanying drawings are: 1 is the mold base assembly, 2 is the mounting hole, 3 is the mold, 4 is the key block, 5 is the mold tensioning sleeve, 6 is the ear plate, 7 is the fastening bolt, 8 is the concave platform, 9 is the limiting circular hole, 10 is the spring groove, 11 is the mold base body, 12 is the mounting groove, 13 is the mold hole, 14 is the step, 15 is the adjustment spring, 16 is the limiting screw, 17 is the limiting sleeve, and 18 is the strip hole. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "horizontal", "vertical" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] like Figure 1 to Figure 6 As shown, a self-calibrating floating die base comprises a die base assembly 1 and a die base body 11 connected to the die base assembly 1, a limiting sleeve 17 is sleeved on the outer side of the die base assembly 1 and the die base body 11, a mounting hole 2 is provided on the die base assembly 1, and a mold tension sleeve 5 and a die 3 are sleeved in sequence from left to right inside the mounting hole 2. In this embodiment, the limiting sleeve 17 is slidably connected with the die base assembly 1 and the die base body 11, the mounting hole 2 is a truncated cone structure, and the diameter of the mounting hole 2 gradually decreases from left to right, the die 3 and the mold tension sleeve 5 are both truncated cone structures, a mold hole of a truncated cone structure is provided on the die 3, the mold tension sleeve 5 is located on the outer side of the die 3, and the mold tension sleeve 5 is used to press and fix the die 3, the die base body 11 and the die base assembly 1 are forged and formed with 45# steel, and the strength and toughness of the die base body 11 and the die base assembly 1 are improved.

[0030] The inner side of the die base body 11 is provided with a mounting groove 12, a die hole 13 is provided at the center of the die base body 11, and a plurality of adjustment springs 15 are arranged between the die base body 11 and the die base assembly 1. In this embodiment, the mounting groove 12 corresponds to the die base assembly 1, and the mounting groove 12 facilitates the die base assembly 1 to move inside the limiting sleeve 17 under the force of the adjustment spring 15, and the die hole 13 facilitates the drawn metal workpiece to pass through the die base body 11. The number of the adjustment springs 15 is eight, and they are annularly installed on the die base body 11.

[0031] The die base body 11 is provided with a plurality of limiting members for limiting the positions of the die base assembly 1 and the limiting sleeve 17. In this embodiment, the number of the limiting members is four, and the angle between adjacent limiting members is 90°.

[0032] The end of the die 3 close to the die base body 11 corresponds to the die hole 13, the end of the die 3 close to the die tension sleeve 5 is symmetrically provided with a key groove 1, and the inner side wall of the die base assembly 1 is symmetrically provided with a key groove 2, and a key block 4 is arranged in the key groove 1 and the key groove 2. In this embodiment, the end of the die 3 close to the die base body 11 corresponds to the die hole 13, and its purpose is to facilitate the drawn metal workpiece to pass through the die hole on the die base body 11. The number of key groove 1, key groove 2 and key block 4 are all two, and the key block 4 is used to limit the movement of the die 3 to prevent the die 3 from rotating in the mounting hole 2, which affects the drawing quality of the metal workpiece.

[0033] The outer side of the die base assembly 1 is provided with a plurality of concave platforms 8 in an annular pattern, and the outer side of the mold tension sleeve 5 is provided with a plurality of ear plates 6 matching the concave platforms 8 in an annular pattern. The ear plates 6 are provided with fastening bolts 7 for fixing the mold tension sleeve 5, and the ear plates 6 are fixed to the die base assembly 1 by the fastening bolts 7. In this embodiment, the number of the ear plates 6 is eight, and the ear plates 6 are provided with through holes for the fastening bolts 7 to pass through. The number of the concave platforms 8 is also eight, and the ear plates 6 are provided with concave grooves. When the mold tension sleeve 5 is fixed by the fastening bolts 7, the screw heads of the fastening bolts 7 are located in the concave grooves.

[0034] The inner side of the die base assembly 1 is provided with a plurality of spring grooves 10 in an annular manner, and the inner side wall of the die base body 11 is provided with a plurality of steps 14 corresponding to the spring grooves 10 in an annular manner, and the two ends of the adjustment spring 15 are respectively connected to the spring grooves 10 and the steps 14. In this embodiment, the number of the steps 14 and the spring grooves 10 are both eight, and the two ends of the adjustment spring 15 are respectively fixedly connected to the die base assembly 1 and the die base body 11; when drawing a metal workpiece, when the force direction of the die 3 of the drawing machine is inconsistent with the drawing direction of the drawn metal workpiece, under the action of the adjustment spring 15, the die base assembly 1 shakes in the limiting sleeve 17, automatically calibrating the force direction of the die 3, and the die base assembly 1 is in a steady state under the interaction of the drawing machine pulling force and the elastic force of the adjustment spring 15 and realizes self-calibration, so that the center line of the die 3 is completely coincident with the center line of the drawn metal workpiece, so that the force direction of the die 3 is consistent with the drawing direction of the metal workpiece.

[0035] The die base assembly 1 is located inside the limiting sleeve 17, and a plurality of limiting circular holes 9 are provided at the edge of the die base assembly 1. In this embodiment, there are four limiting circular holes 9, which correspond to the limiting members, and the limiting circular holes 9 facilitate the movement of the die base assembly 1 inside the limiting sleeve 17, wherein the limiting members pass through the limiting circular holes 9 to limit the die base assembly 1 and restrict the range of movement of the die base assembly 1.

[0036] A square hole is formed at one end of the limiting sleeve 17 close to the die base assembly 1, and a plurality of strip holes 18 corresponding to the limiting circular holes 9 are formed on the limiting sleeve 17. In this embodiment, the size of the square hole is smaller than the size of the die base assembly 1, and the purpose is to enable the limiting sleeve 17 to limit the die base assembly 1, and at the same time ensure that the drawn metal workpiece passes through the die base assembly 1 and the die base body 11, and the strip holes 18 facilitate the limiting member to pass through the limiting sleeve 17 and connect with the die base body 11, and the number of the strip holes 18 is four.

[0037] The limiting member is a limiting screw 16, which corresponds to the limiting circular hole 9. One end of the limiting screw 16 passes through the strip hole 18 and the limiting circular hole 9 in sequence, and is threadedly connected to the mold base body 11. In this embodiment, a threaded hole corresponding to the limiting circular hole 9 is opened on the mold base body 11, and the limiting screw 16 is threadedly connected to the mold base body 11 through the threaded hole. The limiting screw 16 is vertically installed on the inner side of the mold base body 11.

[0038] The diameter of the limiting screw 16 is smaller than the diameter of the limiting circular hole 9, and the screw head diameter of the limiting screw 16 is larger than the width of the strip hole 18. In this embodiment, the diameter of the limiting screw 16 is smaller than the diameter of the limiting circular hole 9, and its purpose is to ensure that the mold base assembly 1 has a certain range of motion and achieve the effect of automatically calibrating the force direction of the mold, and the screw head diameter of the limiting screw 16 is larger than the width of the strip hole 18, and the purpose is to prevent the limiting sleeve 17 from falling off from the mold base assembly 1 and the mold base body 11.

[0039] There is a gap between the inner side of the limiting sleeve 17 and the outer side of the die base assembly 1. In this embodiment, the gap between the limiting sleeve 17 and the die base assembly 1 ensures that the die base assembly 1 can move in the limiting sleeve 17, thereby achieving the effect of automatically calibrating the force direction of the mold.

[0040] There is also a gap between the inner side of the mold base body 11 and the outer side of the mold base assembly 1. The purpose is to ensure that the mold base assembly 1 can move freely inside the mold base body 11 and the limiting sleeve 17, and the limiting sleeve 17 and the mold base body 11 will not interfere with the movement of the mold base assembly 1.

[0041] When the utility model is used, the limiting sleeve 17 is firstly mounted on the die base assembly 1 and the die base body 11, and then the four limiting screws 16 are respectively passed through the strip hole 18 and the limiting circular hole 9 and rotated into the threaded hole on the die base body 11, and then the floating die base is installed on the drawing machine.

[0042] When a metal workpiece is drawn by a drawing machine, the die base assembly 1 is in a steady state under the interaction of the drawing machine pulling force and the elastic force of the adjusting spring 15, the adjusting spring 15 is in a compressed state, and the drawing direction of the drawn metal workpiece is consistent with the force direction of the die 3, that is, the center line of the die 3 completely coincides with the center line of the drawn metal workpiece; and when the drawn metal workpiece has wall deviation, twisting, and surface quality problems, and the force direction of the die 3 is inconsistent with the drawing direction of the drawn metal workpiece, under the elastic force of the adjusting spring 15, the die base assembly 1 moves in the limiting sleeve 17, and the die base assembly 1 synchronously drives the die 3 to move, so as to automatically calibrate the force direction of the die 3 during the process of drawing the metal workpiece, and ensure that the force direction of the die 3 is consistent with the drawing direction of the drawn metal workpiece.

[0043] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. A self-calibrating floating mold base, characterized in that: The mold base assembly (1) comprises a mold base body (11) connected to the mold base assembly (1), the outer sides of the mold base assembly (1) and the mold base body (11) are sleeved with a limiting sleeve (17), the mold base assembly (1) is provided with a mounting hole (2), and the inside of the mounting hole (2) is sleeved with a mold tension sleeve (5) and a mold (3) in sequence from left to right; A mounting groove (12) is provided on the inner side of the die base body (11), a die hole (13) is provided at the center of the die base body (11), and a plurality of adjustment springs (15) are arranged between the die base body (11) and the die base assembly (1); The die base body (11) is provided with a plurality of limiting members for limiting the positions of the die base assembly (1) and the limiting sleeve (17).

2. A self-calibrating floating mold base according to claim 1, characterized in that: One end of the mold (3) close to the mold base body (11) corresponds to the mold hole (13), one end of the mold (3) close to the mold tension sleeve (5) is symmetrically provided with a key groove 1, and the inner side wall of the mold base assembly (1) is symmetrically provided with a key groove 2, and key blocks (4) are arranged in the key groove 1 and the key groove 2.

3. The self-calibrating floating mold base according to claim 1, characterized in that: The outer side of the die base assembly (1) is provided with a plurality of concave platforms (8) in an annular shape, the outer side of the die tension sleeve (5) is provided with a plurality of ear plates (6) matching the concave platforms (8), the ear plates (6) are provided with fastening bolts (7) for fixing the die tension sleeve (5), and the ear plates (6) are fixed to the die base assembly (1) by means of the fastening bolts (7).

4. The self-calibrating floating mold base according to claim 1, characterized in that: The inner side of the mold base assembly (1) is provided with a plurality of spring grooves (10) in an annular manner, the inner side wall of the mold base body (11) is provided with a plurality of steps (14) corresponding to the spring grooves (10) in an annular manner, and the two ends of the adjustment spring (15) are respectively connected to the spring grooves (10) and the steps (14).

5. The self-calibrating floating mold base according to claim 1, characterized in that: The die base assembly (1) is located inside the limiting sleeve (17), and a plurality of limiting circular holes (9) are provided at the edge of the die base assembly (1).

6. A self-calibrating floating mold base according to claim 5, characterized in that: A square hole is formed at one end of the limiting sleeve (17) close to the die base assembly (1), and a plurality of strip holes (18) corresponding to the limiting circular holes (9) are formed on the limiting sleeve (17).

7. The self-calibrating floating mold base according to claim 6, characterized in that: The limiting member is a limiting screw (16), the limiting screw (16) corresponds to the limiting circular hole (9), one end of the limiting screw (16) passes through the strip hole (18) and the limiting circular hole (9) in sequence, and is threadedly connected to the mold base body (11).

8. The self-calibrating floating mold base according to claim 7, characterized in that: The diameter of the limiting screw (16) is smaller than the diameter of the limiting circular hole (9), and the diameter of the screw head of the limiting screw (16) is larger than the width of the strip hole (18).

9. The self-calibrating floating mold base according to claim 1, characterized in that: There is a gap between the inner side of the limiting sleeve (17) and the outer side of the mold base assembly (1).

10. The self-calibrating floating mold base according to claim 1, characterized in that: There is also a gap between the inner side of the mold base body (11) and the outer side of the mold base assembly (1).

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