Hot upsetting die capable of adjusting elongation

Abstract

The utility model discloses an elongation-adjustable hot upsetting die which comprises a lower die plate, a female die holder is sleeved in the lower die plate and fixedly connected with the lower die plate, two ends of the female die holder extend out of the upper surface and the lower surface of the lower die plate, threads are engraved on the outer walls of the extending parts of the two ends of the female die holder, one end of the female die holder is sleeved with a height adjusting thread sleeve through the threads, and the other end of the female die holder abuts against a female die. An upper die matched with the female die is correspondingly arranged close to the female die, the female die is sleeved with a female die pressing sleeve, the female die pressing sleeve presses and fixes the female die and then is locked with the female die base in a threaded mode, through holes are formed in the center of the female die base and the center of the height adjusting threaded sleeve, the through holes are coaxial with the female die inner die, an ejector rod and an ejector rod are arranged in the through holes in a sleeved mode, and one part of the ejector rod extends out of the height adjusting threaded sleeve. The ejector rod can push the ejector rod to slide up and down along the inner wall of the female die base. When the die is used and adjusted, operation is more convenient, adjusting precision is high, stability is high, and production efficiency and product quality are guaranteed when workpieces of different specifications are produced.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical manufacturing, and in particular relates to a hot upsetting die with adjustable elongation. Background Art

[0002] With the rapid development of modern machinery manufacturing industry, the requirements for product quality are getting higher and higher. On this basis, higher requirements are put forward for the precision of standard parts production. Generally, when producing such workpieces, it is necessary to heat the blank first, and then use the die to upset and forge it, and then make the corresponding workpiece after cooling. For example, when manufacturing bolts of different lengths, according to the change of bolt length, it is usually adopted to increase or decrease the pad in the female die to control the bolt length. This method requires repeated disassembly and assembly of the mold and then increase or decrease the pad inside the mold during adjustment. Not to mention the labor and time, due to the influence of the pad size, the adjustment accuracy is limited and cannot meet the increasingly high production requirements. In addition, the adjustment process is cumbersome, and the efficiency is low when producing large quantities of multi-variety standard parts.

[0003] Therefore, there is an urgent need to improve the existing hot upsetting die and provide a die that is easy to process, has higher adjustment accuracy and stability, so as to ensure fast and efficient production while improving product quality. Utility Model Content

[0004] The utility model aims to provide a hot upsetting die with adjustable elongation, which solves the problems of inconvenient adjustment, limited adjustment accuracy and stability of traditional dies when processing parts with different length specifications.

[0005] The technical scheme adopted by the utility model is that the hot upsetting die with adjustable elongation comprises a lower template, a female die seat is sleeved inside the lower template, the female die seat is fixedly connected to the lower template, two ends of the female die seat extend out of the upper and lower surfaces of the lower template, the outer walls of the extended parts at both ends of the female die seat are engraved with threads, one end of the female die seat is sleeved with a height-adjusting screw sleeve through a thread, and the other end abuts against the female die, and a matching upper die is arranged near the female die, a female die clamping sleeve is sleeved outside the female die, and the female die clamping sleeve is locked with the female die seat thread after clamping and fixing the female die, a through hole is provided in the center of the female die seat and the height-adjusting screw sleeve, the through hole is coaxial with the inner die of the female die, a push rod and a material ejector rod are sleeved in the through hole, a part of the material ejector rod extends out of the height-adjusting screw sleeve, and the material ejector rod can push the push rod to slide up and down along the inner wall of the female die seat.

[0006] The utility model is also characterized in that:

[0007] The lower mold plate and the female mold base are provided with flanges which match each other, and the joints of the flanges are fixed by bolts.

[0008] An adjusting pad is arranged between the ejector rod and the ejector rod.

[0009] The outer wall of the height-adjusting screw sleeve is provided with a convex portion which fits with the lower template, and a locking top screw is arranged on the convex portion.

[0010] The locking jack screw is arranged in the same direction as the ejector rod, and the locking jack screw penetrates through the convex part and then abuts against the lower template.

[0011] A plurality of rotating wrenches are arranged on the height-adjusting screw sleeve.

[0012] The rotary wrenches are arranged symmetrically around the axis.

[0013] The beneficial effects of the utility model are as follows: the hot upsetting die with adjustable elongation is achieved by arranging a die seat inside the lower die plate, with both ends of the die seat extending out of the surface of the lower die plate, one end of the die seat being threadedly connected to a height-adjusting screw sleeve, and the other end abutting the die, and a push rod and a material ejector rod are arranged inside the die seat, a part of the material ejector rod extending out of the height-adjusting screw sleeve can push the push rod to slide up and down along the inner wall of the die seat, thereby adjusting the elongation of the inner die, and the height-adjusting screw sleeve and the die seat are threadedly matched, and there is no need to disassemble the die for fine adjustment, and it is only necessary to rotate the height-adjusting screw sleeve to adjust its relative height on the die seat, so that the length of the workpiece can be controlled more accurately, the operation is convenient, the stability is stronger, the yield rate is improved, and the production efficiency and product quality of batch production of multiple varieties of workpieces are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the hot upsetting die with adjustable elongation of the utility model.

[0015] Figure 2 It is a cross-sectional view of the utility model of a hot upsetting die with adjustable elongation.

[0016] In the figure: 1. upper die, 2. female die, 3. female die clamping sleeve, 4. ejector rod, 5. female die seat, 6. lower die plate, 7. adjustment pad, 8. height adjustment screw sleeve, 9. rotating wrench, 10. locking ejector screw, 11. ejector rod. DETAILED DESCRIPTION

[0017] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0018] The utility model provides a hot upsetting die with adjustable elongation, such as Figure 1 and Figure 2As shown, it includes a lower template 6. Usually, the template 6 is a round pancake-shaped workpiece, which is used to provide support for various components in the mold. A solid metal material can be selected to provide sufficient bearing capacity. A female mold base 5 is sleeved inside the lower template 6. The female mold base 5 is fixedly connected to the lower template 6. The fixing method can be divided into various forms. For example, the lower template 6 and the female mold base 5 are provided with flanges that match each other. The flanges are fixed by bolts through the joint, or threaded connection is adopted. Both ends of the female mold base 5 extend out of the upper and lower surfaces of the lower template 6, that is, the length of the female mold base 5 must be greater than the thickness of the lower template 6. The outer walls of the protruding parts at both ends of the female mold base 5 are engraved with threads. The protruding parts of the female mold base 5 are used to combine with corresponding components. The threads are arranged around the outer wall of the protruding parts to facilitate the connection of the required components. One end of the female mold base 5 is connected to the height adjustment screw sleeve 8 through a threaded sleeve. The inner wall of the height adjustment screw sleeve 8 is engraved with an internal thread. After being sleeved on the outside of the female mold base 5, the height of the height adjustment screw sleeve 8 can be adjusted by rotating the thread. One end is against the female mold 2, and a matching upper mold 1 is arranged near the female mold 2. The female mold 2 and the upper mold 1 are matching components. The upper mold 1 is generally arranged on a matching device. After the workpiece to be formed is filled into the female mold 2, the workpiece is hot-forged by pressing the upper mold 1 and the inner mold of the female mold 2 together. A female mold clamping sleeve 3 is sleeved on the outside of the female mold 2. The female mold clamping sleeve 3 presses and fixes the female mold 2 and is locked with a female mold base 5 by thread, ensuring that the relative position of the female mold 2 and the female mold base 5 is fixed. The center of the female mold base 5 and the height adjustment screw sleeve 8 Through holes are provided, the female mold base 5 is communicated with the through hole of the height adjustment screw sleeve 8, and is coaxial with the inner mold of the female mold 2. The ejector rod 4 and the ejector rod 11 are sleeved in the through hole. One or more adjusting pads 7 can be provided between the ejector rod 11 and the ejector rod 4. One end of the ejector rod 4 extends into the inner mold of the female mold 2, and the other end is in direct contact with the ejector rod 11 or through the interaction between the adjusting pad 7 and the ejector rod 11, so that the ejector rod 11 can push the ejector rod 4 to slide up and down along the inner wall of the female mold base 5, and the ejector rod 4 is adjusted in the female mold. 2, a part of the ejector rod 11 extends out of the height-adjusting screw sleeve 8. It can be understood that when the ejector rod 11 extends to a certain length, it can be engaged with the height-adjusting screw sleeve 8 to fix the relative positions of the two. For example, the outer shape of the ejector rod 11 can be engaged in a manner that the upper outer diameter is slightly larger than the central through hole diameter of the height-adjusting screw sleeve 8, or other engaging methods can be adopted, which is not limited in the present application. The extended part of the ejector rod 11 is used to push the ejector rod 4 from the outside to perform operations such as unloading.

[0019] On the basis of the above structure, the outer wall of the height-adjusting screw sleeve 8 is also provided with a convex portion that fits with the lower template 6. The convex portion can extend along the circumference of the height-adjusting screw sleeve 8. A locking top screw 10 is arranged on the convex portion to support and fix the height-adjusting screw sleeve 8. The locking top screw 10 is arranged in the same direction as the ejection rod 11. After the locking top screw 10 passes through the convex portion, it abuts against the lower template 6. A blind hole can be arranged on the lower template 6 at a position corresponding to the locking top screw 10 to prevent the locking top screw 10 from sliding. The locking top screw 10 is threadedly matched with the height-adjusting screw sleeve 8.

[0020] In addition, a plurality of rotary wrenches 9 are provided on the height-adjusting screw sleeve 8 , and the rotary wrenches 9 are symmetrically arranged around the axis, so as to increase the torque while facilitating gripping, and to perform rotational adjustment on the height-adjusting screw sleeve 8 .

[0021] When the mold provided by the utility model is in use, the ejector rod 4 and the ejector rod 11 can slide up and down inside the lower mold plate 6. When hot upsetting workpieces of different length specifications are performed, the length of the formed workpiece can be regulated by adjusting the amount of insertion of the ejector rod 4 into the female mold 2. The specific operation is as follows: when a larger range of preliminary adjustment is required, the height adjustment screw sleeve 8 and the ejector rod 11 are unscrewed, and an adjustment pad 7 is added between the ejector rod 11 and the ejector rod 4 as needed to adjust the inner mold length in the female mold 2; when fine adjustment is required, the height adjustment screw sleeve 8 and the female mold seat 5 are threadedly matched, and the height adjustment screw sleeve 8 is rotated to adjust its relative height on the female mold seat 5, so as to accurately control the length of the inner mold. After reaching the required height, the locking ejector screw 10 is tightened to abut against the lower mold plate 6 to prevent the height adjustment screw sleeve 8 from sliding and causing deviation. After the elongation of the inner mold is determined, the upper mold 1 and the female mold 2 are pressed together to hot upset the required workpiece.

[0022] The hot upsetting die with adjustable elongation provided by the utility model adopts the mode of preliminary adjustment by adjusting the pad and fine adjustment by adjusting the height sleeve to cooperate with each other, so that the elongation of the inner die can be controlled more accurately. The locking top screw arranged on the height sleeve cleverly plays a locking and fixing role, which prevents deviation of the processing size and improves the quality of the finished product. When performing fine adjustment in a small range, there is no need to disassemble the die, and it is only necessary to rotate the height sleeve to adjust the height. Compared with the traditional die, which needs to disassemble and replace the pad for each adjustment, the die provided by the utility model is more convenient and quick to use.

[0023] Example 1

[0024] The hot upsetting die with adjustable elongation provided in the present embodiment 1 comprises a lower template 6, a female die seat 5 is sleeved inside the lower template 6, and the lower template 6 and the female die seat 5 are provided with mutually matching flanges, and the flange junction is fixed by bolts, and the two ends of the female die seat 5 extend out of the upper and lower surfaces of the lower template 6, and the outer walls of the protruding parts at both ends of the female die seat 5 are engraved with threads, one end of the female die seat 5 is connected with a height adjustment screw sleeve 8 through a thread sleeve, and the other end abuts against the female die 2, and a matching upper die 1 is correspondingly arranged near the female die 2, and a female die pressing sleeve 3 is sleeved outside the female die 2, and the female die pressing sleeve 3 is threadedly locked with the female die seat 5 after pressing and fixing the female die 2, a through hole is provided in the center of the female die seat 5 and the height adjustment screw sleeve 8, and the through hole is coaxial with the inner die of the female die 2, and a push rod 4 and a push rod 11 are sleeved in the through hole, and an adjustment pad 7 is arranged between the push rod 11 and the push rod 4, and a part of the push rod 11 extends out of the height adjustment screw sleeve 8, and the push rod 11 can push the push rod 4 to slide up and down along the inner wall of the female die seat 5.

[0025] Example 2

[0026] The hot forging mold with adjustable elongation provided in this embodiment 2 includes a lower template 6, a female mold base 5 is sleeved inside the lower template 6, and the lower template 6 and the female mold base 5 are provided with mutually matching flanges, and the flanges are fixed by bolts through the joints. The two ends of the female mold base 5 extend out of the upper and lower surfaces of the lower template 6, and the outer walls of the protruding parts at both ends of the female mold base 5 are engraved with threads. One end of the female mold base 5 is connected to the height adjustment screw sleeve 8 through a thread sleeve, and the other end abuts the female mold 2. A matching upper mold 1 is correspondingly arranged near the female mold 2. A female mold clamping sleeve 3 is sleeved outside the female mold 2. The female mold clamping sleeve 3 is threadedly locked with the female mold base 5 after pressing and fixing the female mold 2. A through hole is opened in the center of the female mold base 5 and the height adjustment screw sleeve 8. The through hole is coaxial with the inner mold of the female mold 2. A push rod 4 and a push rod 11 are sleeved in the through hole. An adjusting pad 7 is arranged between the push rod 11 and the push rod 4. A part of the push rod 11 extends out of the height adjustment screw sleeve 8, and the push rod 11 can push the push rod 4 to slide up and down along the inner wall of the female mold base 5.

[0027] The outer wall of the height-adjusting screw sleeve 8 is provided with a convex portion that fits with the lower template 6 , and a locking top screw 10 is provided on the convex portion. The locking top screw 10 is arranged in the same direction as the ejector rod 11 , and the locking top screw 10 penetrates the convex portion and abuts against the lower template 6 .

[0028] Example 3

[0029] The hot forging mold with adjustable elongation provided in this embodiment 3 includes a lower template 6, a female mold base 5 is sleeved inside the lower template 6, and the lower template 6 and the female mold base 5 are provided with mutually matching flanges, and the flanges are fixed by bolts through the joints. The two ends of the female mold base 5 extend out of the upper and lower surfaces of the lower template 6, and the outer walls of the protruding parts at both ends of the female mold base 5 are engraved with threads. One end of the female mold base 5 is connected to the height adjustment screw sleeve 8 through a thread sleeve, and the other end abuts the female mold 2. A matching upper mold 1 is correspondingly arranged near the female mold 2. A female mold clamping sleeve 3 is sleeved outside the female mold 2. The female mold clamping sleeve 3 is threadedly locked with the female mold base 5 after clamping and fixing the female mold 2. A through hole is opened in the center of the female mold base 5 and the height adjustment screw sleeve 8. The through hole is coaxial with the inner mold of the female mold 2. A push rod 4 and a push rod 11 are sleeved in the through hole. An adjusting pad 7 is arranged between the push rod 11 and the push rod 4. A part of the push rod 11 extends out of the height adjustment screw sleeve 8, and the push rod 11 can push the push rod 4 to slide up and down along the inner wall of the female mold base 5.

[0030] The outer wall of the height-adjusting screw sleeve 8 is provided with a convex portion that fits with the lower template 6 , and a locking top screw 10 is provided on the convex portion. The locking top screw 10 is arranged in the same direction as the ejector rod 11 , and the locking top screw 10 penetrates the convex portion and abuts against the lower template 6 .

[0031] A plurality of rotary wrenches 9 are arranged on the height-adjusting screw sleeve 8, and the rotary wrenches 9 are symmetrically arranged around the axis.

Claims

1. Hot upsetting die with adjustable elongation, characterized in that: The invention comprises a lower template (6), wherein a female mold base (5) is sleeved inside the lower template (6), the female mold base (5) is fixedly connected to the lower template (6), the two ends of the female mold base (5) extend out of the upper and lower surfaces of the lower template (6), the outer walls of the extended parts at the two ends of the female mold base (5) are engraved with threads, one end of the female mold base (5) is connected to a height adjustment screw sleeve (8) through a thread sleeve, and the other end abuts against the female mold (2), and an upper mold (1) matched therewith is correspondingly arranged near the female mold (2), and the female mold (2) A female mold clamping sleeve (3) is sleeved on the outside. The female mold clamping sleeve (3) is threadedly locked with the female mold base (5) after clamping and fixing the female mold (2). A through hole is provided at the center of the female mold base (5) and the height adjustment screw sleeve (8). The through hole is coaxial with the inner mold of the female mold (2). A push rod (4) and a push rod (11) are sleeved in the through hole. A part of the push rod (11) extends out of the height adjustment screw sleeve (8). The push rod (11) can push the push rod (4) to slide up and down along the inner wall of the female mold base (5).

2. The hot upsetting die with adjustable elongation according to claim 1, characterized in that: The lower mold plate (6) and the female mold base (5) are provided with flanges that match each other, and the joints of the flanges are fixed by bolts.

3. The hot upsetting die with adjustable elongation according to claim 2, characterized in that: An adjustment pad (7) is provided between the ejector rod (11) and the ejector rod (4).

4. The hot upsetting die with adjustable elongation according to claim 3, characterized in that: The outer wall of the height-adjusting screw sleeve (8) is provided with a convex portion that fits with the lower template (6), and a locking top screw (10) is provided on the convex portion.

5. The hot upsetting die with adjustable elongation according to claim 4, characterized in that: The locking push screw (10) and the ejector rod (11) are arranged in the same direction, and the locking push screw (10) penetrates the convex portion and abuts against the lower template (6).

6. The hot upsetting die with adjustable elongation according to claim 5, characterized in that: The height-adjusting screw sleeve (8) is provided with a plurality of rotating wrenches (9).

7. The hot upsetting die with adjustable elongation according to claim 6, characterized in that: The rotary wrench (9) is symmetrically arranged around the axis.

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