Precise guide mechanism of cold heading die

Abstract

The utility model relates to the field of die guide mechanisms, and discloses a precise guide mechanism of a cold heading die, which comprises a lower die, an upper die, a sealing strip, a sealing groove, a guide component and a fixing component, the upper mold is positioned above the lower mold; the sealing strip is fixedly connected to the bottom of the upper die, the sealing groove is formed in the top of the lower die, and the sealing strip is connected with the sealing groove in a clamped mode. The guide assembly is located on the outer side of the lower die. The fixing assembly is located on the outer side of the guiding assembly. The guide rod can be fixed by rotating the screw rod, operation is convenient, the situation that the mold is not tightly closed due to radial sliding of the guide rod and the upper mold is avoided, in addition, the joint of the upper mold and the lower mold is sealed through the sealing strip and the sealing groove, and therefore the sealing performance of the mold is improved.

Description

Technical Field

[0001] This utility model relates to the field of mold guiding mechanisms, and in particular to a precision guiding mechanism for cold heading molds. Background Technology

[0002] The mold guiding mechanism is a component in a mold used to ensure accurate alignment and positioning of the moving mold and the fixed mold during opening and closing, and to withstand a certain amount of lateral pressure. It mainly consists of guide pillars and guide sleeves. The guide pillars are usually installed in the moving mold part, and the guide sleeves are installed in the fixed mold part. During the mold opening and closing process, the guide pillars accurately insert into the guide sleeves, guiding the relative movement of the moving mold and the fixed mold, so that each part of the mold can move accurately along a predetermined trajectory.

[0003] Patent publication number CN202668817U discloses a mold guiding mechanism, which includes a guide hole on the mold body and a copper sleeve assembled in the guide hole. The guide hole is a stepped hole, which is divided into a large hole, a medium hole and a small hole from top to bottom. The axial length of the large hole and the axial length of the medium hole are both less than the axial length of the small hole. The outer diameter of the copper sleeve is equal to the diameter of the small hole, and an annular protrusion is provided on the outer circumference of the copper sleeve. One end face of the annular protrusion is flush with one end face of the copper sleeve. The outer diameter of the annular protrusion is equal to the diameter of the medium hole, and the axial length of the annular protrusion is equal to or less than the axial length of the medium hole. A pressure plate for axially limiting the copper sleeve is provided in the large hole. The pressure plate has a central through hole, and the diameter of the central through hole is greater than or equal to the inner diameter of the copper sleeve.

[0004] However, the aforementioned patent does not include a structure for fixing the copper sleeve. During the production process, the copper sleeve is prone to sliding up and down under external force, resulting in the mold not closing tightly and affecting the sealing performance of the mold. Utility Model Content

[0005] The present invention aims to solve the technical problems mentioned in the background section by providing a precision guiding mechanism for cold heading dies.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A precision guiding mechanism for a cold heading die includes a lower die, an upper die, a sealing strip, a sealing groove, a guiding assembly, and a fixing assembly;

[0008] The upper mold is located above the lower mold;

[0009] The sealing strip is fixedly connected to the bottom of the upper mold, and the sealing groove is opened at the top of the lower mold. The sealing strip is engaged with the sealing groove.

[0010] The guide assembly is located on the outside of the lower mold;

[0011] The fixing component is located outside the guide component.

[0012] Preferably, the guide assembly includes a guide rod, a sleeve, and a pad;

[0013] There are four guide rods in total, and the four guide rods are located on both sides of the upper mold;

[0014] The sleeve is fixedly connected to the outer wall of the lower mold, the guide rod is movably connected to the inside of the sleeve, and the top end of the guide rod is fixedly connected to the upper mold.

[0015] The pad is fixedly connected to the bottom of the guide rod, and the pad is made of rubber.

[0016] Preferably, the fixing component includes a U-shaped rod, a connecting block, a pin, a sleeve, a slider, and a sliding rod;

[0017] The connecting block is fixedly connected to the outside of the guide rod, the connecting block extends through to the outside of the sleeve and is movably connected thereto, and a slot is provided on the top of the connecting block;

[0018] The horizontal part of the U-shaped rod is engaged with the slot, the pin is fixedly connected to the upper part of both sides of the U-shaped rod, and the sleeve is nested outside the pin and movably connected between them;

[0019] The slider is fixedly connected to the sleeve plate, the slider is movably connected to the slide rod, and the slide rod is fixedly connected to the outer wall of the sleeve.

[0020] Preferably, the lower parts of both sides of the U-shaped rod are also fixedly connected to limit blocks, the limit blocks are cylindrical, and both sides of the limit blocks are provided with planar notches;

[0021] The bottom end of the slide bar is fixedly connected to a groove plate, and the outer wall of the groove plate is provided with a straight groove. The width of the straight groove is equal to the distance between the two planar notches, and the limiting block is movably connected in the straight groove.

[0022] The top of the straight groove has a circular hole, and the diameter of the circular hole is the same as that of the limiting block.

[0023] Preferably, a nut is fixedly connected between two adjacent sliders, and a screw is internally threaded onto the nut, the screw being rotatably connected to the outer wall of the lower mold.

[0024] The beneficial effects of this utility model are:

[0025] 1. This utility model can fix the guide rod by rotating the screw, which is convenient to operate and avoids radial sliding between the guide rod and the upper mold, which would cause the mold to not close tightly.

[0026] 2. This utility model seals the connection between the upper and lower molds using sealing strips and sealing grooves, thereby improving the sealing performance of the mold. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the precision guiding mechanism of this cold heading die;

[0028] Figure 2 This is a schematic diagram of the sleeve structure of the precision guide mechanism of this cold heading die;

[0029] Figure 3 This is a schematic diagram of the U-shaped rod structure of the precision guide mechanism of this cold heading die;

[0030] Figure 4 This is a schematic diagram of the groove plate structure of the precision guide mechanism of this cold heading mold.

[0031] Explanation of reference numerals in the attached drawings: 1. Lower mold; 2. Upper mold; 3. Sealing strip; 4. Sealing groove; 5. Guide rod; 6. Screw; 7. Nut; 8. Sleeve; 9. Pad; 10. Connecting block; 11. Slot; 12. U-shaped rod; 13. Pin; 14. Sleeve plate; 15. Slider; 16. Sliding rod; 17. Groove plate; 18. Limiting block; 19. Planar notch; 20. Straight groove; 21. Round hole. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0033] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application 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 this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] This application designs a precision guiding mechanism for a cold heading die, as shown in the attached figure. Figure 1-4 As shown, it includes a lower mold 1, an upper mold 2, a sealing strip 3, a sealing groove 4, a guide assembly, and a fixing assembly;

[0036] The upper mold 2 is located above the lower mold 1;

[0037] The sealing strip 3 is fixedly connected to the bottom of the upper mold 2, and the sealing groove 4 is opened at the top of the lower mold 1. The sealing strip 3 is snapped into the sealing groove 4.

[0038] The guide assembly is located on the outside of the lower mold 1;

[0039] The fixing component is located outside the guide component.

[0040] Example 1

[0041] As attached Figure 1-3 As shown, the guide assembly includes a guide rod 5, a sleeve 8, and a pad 9;

[0042] There are four guide rods 5 in total, and the four guide rods 5 are located on both sides of the upper mold 2 respectively;

[0043] The sleeve 8 is fixedly connected to the outer wall of the lower mold 1, and the guide rod 5 is movably connected inside the sleeve 8. The top end of the guide rod 5 is fixedly connected to the upper mold 2.

[0044] The pad 9 is fixedly connected to the bottom of the guide rod 5, and the pad 9 is made of rubber.

[0045] The fixing components include a U-shaped rod 12, a connecting block 10, a pin 13, a sleeve plate 14, a slider 15, and a sliding rod 16;

[0046] The connecting block 10 is fixedly connected to the outside of the guide rod 5. The connecting block 10 extends through the outside of the sleeve 8 and is movably connected thereto. A slot 11 is provided on the top of the connecting block 10.

[0047] The horizontal part of the U-shaped rod 12 is engaged with the slot 11, the pin 13 is fixedly connected to the upper part of both sides of the U-shaped rod 12, and the sleeve plate 14 is nested outside the pin 13 and is movably connected between them.

[0048] The slider 15 is fixedly connected to the sleeve 14, and the slider 15 is movably connected to the slide rod 16. The slide rod 16 is fixedly connected to the outer wall of the sleeve 8.

[0049] Nuts 7 are fixedly connected between two adjacent sliders 15. A screw 6 is connected to the internal thread of the nut 7. The screw 6 is rotatably connected to the outer wall of the lower mold 1.

[0050] In the above embodiments, the guide rod 5 is inserted into the sleeve 8, thereby positioning and connecting the lower mold 1 and the upper mold 2. The pad block 9 is used to prevent the guide rod 5 from impacting the sleeve 8 and causing damage to the inner wall of the sleeve 8. The U-shaped rod 12 is stuck in the slot 11, thereby fixing the connecting block 10 and then fixing the guide rod 5 to prevent the guide rod 5 and the upper mold 2 from sliding radially.

[0051] Example 2

[0052] As attached Figure 4 As shown, the lower parts of both sides of the U-shaped rod 12 are also fixedly connected to limit blocks 18. The limit blocks 18 are cylindrical, and planar notches 19 are provided on both sides of the limit blocks 18.

[0053] The bottom end of the slide bar 16 is fixedly connected to the groove plate 17. The outer wall of the groove plate 17 is provided with a straight groove 20. The width of the straight groove 20 is equal to the distance between the two planar notches 19. The limiting block 18 is movably connected in the straight groove 20.

[0054] The top of the straight groove 20 has a circular hole 21, which has the same diameter as the limiting block 18.

[0055] Working principle: When the operator rotates the screw 6, the screw 6 drives the nut 7 to move upward, the nut 7 drives the slider 15 to move upward, the slider 15 drives the sleeve plate 14 and the pin 13 to move upward, the pin 13 drives the U-shaped rod 12 to move upward, and the U-shaped rod 12 simultaneously drives the limit block 18 to move upward along the straight groove 20 until it moves into the round hole 21.

[0056] Subsequently, the slider 15 and the U-shaped rod 12 continue to move upward. Under the limiting action of the circular hole 21, the limiting block 18 rotates, and the limiting block 18 drives the U-shaped rod 12 to rotate, thereby opening the U-shaped rod 12.

[0057] Then the guide rod 5 is inserted into the sleeve 8, and the sleeve 8 drives the connecting block 10 to move downward until the upper mold 2 and the lower mold 1 are in contact. At this time, the sealing strip 3 is inserted into the sealing groove 4.

[0058] Then, rotate the screw 6 to lock the U-shaped rod 12 into the slot 11, thereby fixing the connecting block 10 and the guide rod 5.

[0059] The above embodiments are only some embodiments of this utility model, not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the protection scope of this utility model.

Claims

1. A precision guiding mechanism of a cold heading die, characterized by: Including lower mold (1), upper mold (2), sealing strip (3), sealing groove (4), guide assembly, fixed assembly; The upper mold (2) is located above the lower mold (1); The sealing strip (3) is fixedly connected to the bottom of the upper mold (2), and the sealing groove (4) is arranged on the top of the lower mold (1), and the sealing strip (3) is connected with the sealing groove (4); The guide assembly is located outside the lower mold (1); The fixed assembly is located outside the guide assembly.

2. A precision guiding mechanism of a cold heading die according to claim 1, characterized in that: The guide assembly includes guide rods (5), sleeves (8) and cushion blocks (9); The four guide rods (5) are respectively located on both sides of the upper mold (2); The sleeve (8) is fixedly connected to the outer wall of the lower mold (1), the guide rod (5) is movably connected inside the sleeve (8), and the top end of the guide rod (5) is fixedly connected with the upper mold (2); The cushion block (9) is fixedly connected to the bottom of the guide rod (5), and the cushion block (9) is made of rubber material.

3. A precision guiding mechanism of a cold heading die according to claim 2, characterized in that: The fixed assembly includes U-shaped rods (12), connecting blocks (10), pins (13), sleeve plates (14), sliding blocks (15) and sliding rods (16); The connecting block (10) is fixedly connected outside the guide rod (5), and the connecting block (10) penetrates to the outside of the sleeve (8) and is movably connected therebetween, and the top of the connecting block (10) is provided with a clamping groove (11); The horizontal part of the U-shaped rod (12) is connected with the clamping groove (11), the pin (13) is fixedly connected to the upper part of the both sides of the U-shaped rod (12), and the sleeve plate (14) is nested outside the pin (13) and movably connected therebetween; The sliding block (15) is fixedly connected with the sleeve plate (14), the sliding block (15) is movably connected with the sliding rod (16), and the sliding rod (16) is fixedly connected to the outer wall of the sleeve (8).

4. The precision guiding mechanism of a cold heading die according to claim 3, characterized in that: The lower part of the both sides of the U-shaped rod (12) is also fixedly connected with a limiting block (18), the limiting block (18) is cylindrical, and the both sides of the limiting block (18) are provided with planar notches (19); The bottom end of the sliding rod (16) is fixedly connected with a groove plate (17), the outer wall of the groove plate (17) is provided with a straight slot (20), the width of the straight slot (20) is equal to the distance between the two planar notches (19), and the limiting block (18) is movably connected in the straight slot (20); The top end of the straight slot (20) is provided with a circular hole (21), and the diameter of the circular hole (21) is the same as that of the limiting block (18).

5. The precision guiding mechanism of a cold heading die according to claim 3, characterized in that: Adjacent two sliding blocks (15) are fixedly connected with a nut (7), the nut (7) is internally threadedly connected with a screw rod (6), and the screw rod (6) is rotatably connected to the outer wall of the lower mold (1).

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