Forging and pressing die for U-shaped bolt of automobile chassis

Abstract

The utility model relates to the field of forging and pressing dies, and discloses a U-shaped bolt forging and pressing die for an automobile chassis, which comprises a base, the upper surface of the base is fixedly connected with a guide rod, an upper die is arranged above the base, the upper surface of the base is fixedly connected with a fixed shell, the upper surface of the fixed shell is provided with a U-shaped through groove, and the U-shaped through groove is communicated with the guide rod. A lower mold is fixedly connected to the top face in the fixed shell, a U-shaped plate is inserted into the lower mold, a through hole is formed in the bottom face in the lower mold, and a demolding unit is arranged below the lower mold. According to the U-shaped bolt demolding device, the fixed shell, the U-shaped through groove, the lower mold, the through hole and the demolding unit are matched, after U-shaped bolt raw materials are forged and pressed, the U-shaped plate is driven to move upwards, the U-shaped bolt materials are rapidly ejected out of the lower mold, the demolding efficiency is improved, the demolding unit can be separated from the U-shaped plate in the forging and pressing process of the raw materials, and the demolding efficiency is improved. And heat is prevented from being transferred into the demolding unit.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of forging die, especially relates to a kind of for automobile chassis U bolt forging die. BACKGROUND

[0002] U bolt shape is U shape, and two ends have thread and can be combined with cap, mainly used for fixing tubular object such as water pipe or sheet object such as automobile leaf spring, and the application in automobile field mainly concentrates in chassis stability, suspension system connection and leaf spring fixation etc., and plays a vital role for guaranteeing the safety and reliability of automobile, U bolt needs to use forging die to forge and press during production process.

[0003] After searching, China patent publication number: CN214814500U discloses an automobile chassis U bolt forging die, including automatically demolding after forging, the raw material to be forged is placed in the U-shaped die cavity of lower die, the hydraulic machine is opened to make the U-shaped die cavity of upper die and lower die adaptive connection, when raw material is forged and formed, the hydraulic machine drives upper seat and upper die to move upward away from the U-shaped die cavity of lower die, the spring of lower sleeve inner side wall is reset to drive upper rod to slide upward, the bottom plate at the top of upper rod is jolted upward along U-shaped die cavity, at this time, the forging piece at the top of bottom plate is ejected from U-shaped die cavity, and demolding is facilitated.

[0004] And the forging die in the actual use process, when raw material is forged and processed, since plastic deformation occurs to metal blank, most of forging ability is converted into heat, so that the temperature of raw material rises, the temperature rising amplitude is larger, the temperature inside the die rises, high temperature can cause thermal stress and thermal fatigue of spring, leading to the performance of spring to decline, the automatic demolding efficiency of forging piece and the service life of demolding mechanism are influenced, therefore, a kind of for automobile chassis U bolt forging die is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a kind of for automobile chassis U bolt forging die, aims at improving the problem that the temperature of raw material rises when forging and pressing in prior art, which can cause the performance of spring to decline, and then influence the automatic demolding efficiency of forging piece and the service life of demolding.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of for automobile chassis U-shaped bolt forging and pressing mould, including base, the upper surface of the base is fixedly connected with guide rod, the top of the base is provided with upper die, the upper surface of the base is fixedly connected with fixed shell, the upper surface of the fixed shell is equipped with U-shaped through slot, the inside top of the fixed shell is fixedly connected with lower die, the inside of the lower die is inserted with U-shaped plate, the inside bottom of the lower die is equipped with through-hole, the bottom of the lower die is provided with stripping unit, the stripping unit is acted on and drives U-shaped plate to carry out the linear motion in up-down direction.

[0007] As further description of the above technical solution:

[0008] The outside of the lower die is fixedly connected with the heat dissipation shell, the inside bottom right of the fixed shell is fixedly connected with the cooler, and the top output end of the cooler is fixedly connected with the heat conduction rod.

[0009] As further description of the above technical solution:

[0010] The heat dissipation shell is wrapped on the outside of the lower die, and the top end of the heat conduction rod penetrates the heat dissipation shell.

[0011] As further description of the above technical solution:

[0012] The left side surface of the heat dissipation shell is fixedly connected with the liquid inlet pipe and the liquid outlet pipe on the upper side and the lower side respectively.

[0013] As further description of the above technical solution:

[0014] The stripping unit includes an electric push rod, the top end of the electric push rod is fixedly connected with a connecting plate, and the upper surface of the connecting plate is fixedly connected with a top rod.

[0015] As further description of the above technical solution:

[0016] The size of the top rod is matched with the size of the through hole, and the top rod is located directly below the through hole.

[0017] As further description of the above technical solution:

[0018] The lower die is located directly below the U-shaped through slot, and the size of the U-shaped through slot is matched with the size of the inside of the lower die.

[0019] As further description of the above technical solution:

[0020] The outer wall of the U-shaped plate is matched with the inner wall of the lower die.

[0021] The utility model has the following beneficial effects:

[0022] 1. The utility model discloses a fixed casing, U -shaped through slot, lower mould, hole and the cooperation of demoulding unit can drive the U -shaped plate to move up after the U -shaped bolt raw material is forged and pressed, and the U -shaped bolt material is ejected from the lower mould quickly, improves the demoulding efficiency, and can make the demoulding unit separate from the connection of the U -shaped plate in the process of forging and pressing raw material, avoid the heat transfer to the demoulding unit, influence the service life and automatic demoulding efficiency of demoulding unit.

[0023] 2. The utility model discloses the cooperation of heat dissipation casing, cooler and heat conduction rod can be handled cooling to the lower mould and U -shaped bolt material after forging and pressing, accelerates the cooling efficiency of U -shaped bolt material, and the subsequent processing efficiency is improved conveniently to the taking of U -shaped bolt material. ACCURACY OF DRAWINGS

[0024] Figure 1 It is a whole schematic view for the utility model proposes a U -shaped bolt forging and pressing mould for automobile chassis;

[0025] Figure 2 It is a fixed casing inside front part section of the utility model proposes a U -shaped bolt forging and pressing mould for automobile chassis;

[0026] Figure 3 It is a fixed casing inside top part section of the utility model proposes a U -shaped bolt forging and pressing mould for automobile chassis;

[0027] Figure 4 It is a lower mould and U -shaped plate split -up schematic view of the utility model proposes a U -shaped bolt forging and pressing mould for automobile chassis.

[0028] LEGEND:

[0029] 1, base, 2, guide rod, 3, upper mould, 4, fixed casing, 5, U -shaped through slot, 6, lower mould, 7, U -shaped plate, 8, hole, 81, electric push rod, 82, connecting plate, 83, ejector pin, 9, heat dissipation casing, 10, cooler, 11, heat conduction rod. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0031] REFERENCE Figure 1 - Figure 2The utility model provides an embodiment: a kind of for automobile chassis U bolt forging and pressing mould, including base 1, the upper surface of base 1 is fixedly connected with guide rod 2, the upper surface of base 1 is provided with upper die 3, the top of guide rod 2 is penetrated in upper die 3, upper die 3 is inserted in the outside of guide rod 2, guide rod 2 can be oriented to the movement of upper die 3 Limit position, place device under stamping mechanism, make stamping mechanism be located in the just above of upper die 3, by stamping structure on upper die 3, start stamping structure and can be forged and pressed to raw material, upper die 3 can be fixedly connected with the output end of stamping structure, by the output end of stamping structure drive upper die 3 down and can be forged and pressed to raw material, the upper surface of base 1 is fixedly connected with fixed shell 4, the upper surface of fixed shell 4 is provided with U-shaped through slot 5, the inside top of fixed shell 4 is fixedly connected with lower die 6, lower die 6 is located in the just below of U-shaped through slot 5, the inside size of U-shaped through slot 5 and lower die 6 is mutually adapted, raw material can be placed into lower die 6 by U-shaped through slot 5, when upper die 3 down, it can enter lower die 6, and raw material is quickly stamped, the bottom surface of lower die 6 can be fixedly connected with support rod (not directly drawn in the figure), and the bottom end of support rod is with the inner wall bottom surface of fixed shell 4, support rod can be fixed with lower die 6, so that lower die 6 remains stable during forging process, further improve the stability of mould whole.

[0032] Refer to Figure 2 - Figure 4 The inside of lower die 6 is inserted with U-shaped plate 7, the outer wall of U-shaped plate 7 and the inner wall of lower die 6 mutually fit, U-shaped plate 7 can be linearly moved in the up-down direction inside lower die 6, when U-shaped plate 7 up, the raw material forged and pressed in lower die 6 can be ejected, so that U bolt material can be quickly demoulded, the inside bottom surface of lower die 6 is provided with through hole 8, the number of through hole 8 is several, several through holes 8 are provided in the inside bottom surface of lower die 6, the lower side of lower die 6 is provided with demoulding unit, and the demoulding unit comprises electric push rod 81, the top of electric push rod 81 is fixedly connected with connecting plate 82, the upper surface of connecting plate 82 is fixedly connected with top rod 83, the size of top rod 83 and the size of through hole 8 are mutually adapted, top rod 83 is located in the just below of through hole 8, the number and position of top rod 83 are mutually adapted with through hole 8, all top rods 83 can be quickly driven to linearly move in the up-down direction by connecting plate 82.

[0033] When electric push rod 81 is started, top rod 83 can be quickly linearly moved in the up-down direction by connecting plate 82, when top rod 83 up, U-shaped plate 7 can be quickly lifted up by being inserted into lower die 6 through through hole 8, so that U-shaped plate 7 up material is quickly demoulded, in the process of forging and pressing raw material, electric push rod 81 can be started to drive top rod 83 to move down, and lower die 6 is separated, so that the heat generated in the process of forging and pressing is not transmitted to electric push rod 81 through top rod 83, which affects the service life of demoulding unit.

[0034] Referring to Figure 2 Figure 3 The outer side of the lower die 6 is fixedly connected with a heat dissipation shell 9, the heat dissipation shell 9 is wrapped on the outer side of the lower die 6, the left side surface of the heat dissipation shell 9 is fixedly connected with an inlet pipe and an outlet pipe on the upper side and the lower side respectively, the heat dissipation shell 9 is filled with heat conducting oil, the heat conducting oil in the heat dissipation shell 9 can be replaced quickly through the inlet pipe and the outlet pipe, or the heat conducting oil can be injected into the heat dissipation shell 9, the heat generated in the forging process of the U-shaped bolt raw material is transmitted to the lower die 6, and the heat is transmitted to the heat conducting oil in the heat dissipation shell 9, so that the temperature of the lower die 6 can be controlled. The inner bottom surface of the fixed shell 4 is fixedly connected with a cooler 10 on the right side, the top output end of the cooler 10 is fixedly connected with a heat conducting rod 11, and the top end of the heat conducting rod 11 penetrates the heat dissipation shell 9. After the U-shaped bolt raw material is forged, the cooler 10 can be started, the inside of the heat dissipation shell 9 is connected with the inside of the heat conducting oil through the heat conducting rod 11, heat dissipation treatment is performed on the lower die 6 and the material through heat conduction of the heat conducting oil, the cooling efficiency of the U-shaped bolt material is accelerated, the U-shaped bolt material is conveniently taken, and the subsequent processing efficiency is improved.

[0035] Working principle: the mold is placed in the pre-set punching mechanism, the upper die 3 is fixedly connected with the output end of the punching mechanism, then the U-shaped bolt raw material is placed in the lower die 6 through the U-shaped through slot 5, the upper die 3 is driven downward by the punching mechanism to forge the raw material, if the temperature in the lower die 6 is too high during continuous forging, the cooler 10 can be started to slowly cool the lower die 6, so as to reduce the thermal fatigue degree of the lower die 6, after the raw material is forged, the cooler 10 is started to connect the inside of the heat dissipation shell 9 with the inside of the heat conducting oil through the heat conducting rod 11, heat dissipation treatment is performed on the U-shaped bolt material through heat conduction of the heat conducting oil and the lower die 6, the cooling efficiency of the U-shaped bolt material is accelerated, the U-shaped bolt material is conveniently taken, after being cooled to a suitable temperature, the electric push rod 81 is started to drive the ejector rod 83 to move upward, the U-shaped plate 7 is quickly lifted upward, the U-shaped plate 7 moves upward to quickly demold the material, when the raw material is forged, the electric push rod 81 is started to drive the ejector rod 83 to move downward, and the ejector rod 83 is separated from the lower die 6, so that the heat generated in the forging process is not transmitted to the electric push rod 81 through the ejector rod 83, and the service life of the demolding unit is affected.

[0036] ​Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, the made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A U-shaped bolt swaging die for an automobile chassis, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected with a guide rod (2), the upper surface of the base (1) is provided with an upper die (3), the upper surface of the base (1) is fixedly connected with a fixed shell (4), the upper surface of the fixed shell (4) is provided with a U-shaped through slot (5), the inner top surface of the fixed shell (4) is fixedly connected with a lower die (6), the lower die (6) is inserted with a U-shaped plate (7), the inner bottom surface of the lower die (6) is provided with a through hole (8), the lower surface of the lower die (6) is provided with a demolding unit, and the demolding unit drives the U-shaped plate (7) to move linearly in the up-down direction.

2. A U-bolt swaging die for automotive chassis according to claim 1, characterized in that: The outer side of the lower die (6) is fixedly connected with a heat dissipation shell (9), the inner bottom surface of the fixed shell (4) is fixedly connected with a cooler (10) on the right side, and the top output end of the cooler (10) is fixedly connected with a heat conduction rod (11).

3. The U-bolt swaging die for automotive chassis according to claim 2, wherein: The heat dissipation shell (9) is wrapped on the outer side of the lower die (6), and the top end of the heat conduction rod (11) penetrates the heat dissipation shell (9).

4. The U-bolt swaging die for automotive chassis according to claim 2, wherein: The left side surface of the heat dissipation shell (9) is fixedly connected with an inlet pipe and an outlet pipe on the upper side and the lower side respectively.

5. The U-bolt swage die for automotive chassis according to claim 1, wherein: The demolding unit comprises an electric push rod (81), the top end of the electric push rod (81) is fixedly connected with a connecting plate (82), and the upper surface of the connecting plate (82) is fixedly connected with a top rod (83).

6. A U-bolt swaging die for automotive chassis according to claim 5, wherein: The size of the top rod (83) is matched with the size of the through hole (8), and the top rod (83) is located directly below the through hole (8).

7. The U-bolt swage die for automotive chassis according to claim 1, wherein: The lower die (6) is located directly below the U-shaped through slot (5), and the size of the U-shaped through slot (5) is matched with the size of the inner part of the lower die (6).

8. The U-bolt swage die for automotive chassis according to claim 1, wherein: The outer wall of the U-shaped plate (7) is matched with the inner wall of the lower die (6).

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